JP2011111294A - Conveyor device - Google Patents

Abstract

[PROBLEMS] To be able to confirm an energy saving effect while having a characteristic that requires no electric power.
When a work W is placed on a work mounting means 20 disposed on one side of a pair of frames 11a and 11b, elastic energy storage means 40 stores elastic energy by its own weight. The elastic energy storage 40 is released from the elastic energy storage unit 40 by the switching unit 50 at a predetermined movement position of the workpiece mounting unit 20 and switched from the elastic energy storage to the elastic energy release. The elastic energy accumulated in the elastic energy accumulating means 40 by the switching means 50 is converted into rotational motion by the reciprocating rotation converting means 80, and transferred to the transfer roller 18 and the driving roller 12 by the endless track means 90 via the reciprocating rotation converting means 80. Apply rotational force.
[Selection] Figure 2

Description

 The present invention relates to an energy saving type conveyor apparatus that can store and transfer elastic energy in an elastic energy storage means only by placing a work in a predetermined place and does not require any electric power.

 Conventional belt conveyors generally include an endless conveyance belt, which is driven by a driving roller that is rotated by an electric motor or a pneumatic motor, and conveys a workpiece placed on the upper surface of the conveyance belt. . For example, the belt conveyor according to the patent invention disclosed in Patent Document 1 has been devised to reduce damage to the conveyor belt, but a drive roller with a built-in motor, a drive roller connected to a motor with a speed reducer, etc. To drive the conveyor belt.

 However, since the conventional belt conveyors including the belt conveyor disclosed in Patent Document 1 are all driven by an electric motor, a pneumatic motor, or the like, electric power is eventually required. In particular, in a large factory or the like, there are many cases where the belt conveyor is continuously operated for 24 hours, and even when the workpiece is not conveyed, only the belt conveyor may be operated, so that a great amount of electric energy is wasted. In addition, fine control such as running the belt conveyor for the required distance, transporting the work on the belt conveyor to the required position, and feeding the belt conveyor for a minute distance is done by conventional electric motor, pneumatic motor, etc. In the drive system, the control system has become extremely complicated.

 Therefore, as shown in Patent Document 2, the present inventor can wind the mainspring spring manually to run the conveyor belt when necessary, and can achieve significant energy saving without using any electric power. At the same time, a mainspring belt conveyor capable of easily performing fine control was invented, a patent application was filed for this invention, and a patent was obtained.

 The mainspring belt conveyor described in Patent Document 2 converts the rotation of the input shaft by the input lever or the foot pedal into a plurality of rotations by a combination of a plurality of gears (rotational speed increasing transmission mechanism), and by this rotation, You can wind the mainspring spring to accumulate elastic energy and release it at a time to send the conveyor belt a predetermined distance at a time, or you can return the input belt or foot pedal little by little to finely control the conveyor belt to send a minute distance It is an innovative belt conveyor that is possible and does not require any power.

Japanese Patent No. 3058637 Japanese Patent Laying-Open No. 2005-231815 (Patent No. 3887379)

 However, in the mainspring type belt conveyor disclosed in Patent Document 2, since a plurality of gears are combined as a rotation speed increasing transmission mechanism, there is a limit to improving efficiency. Further, when the input lever is operated, the rotation angle is relatively large as 130 to 150 degrees, and even when the foot pedal is operated, the vertical movement is relatively large as 200 to 250 mm. Then, more gears are required, and the rotation speed increase transmission mechanism becomes large, and the efficiency is lowered. And the act of operating the input lever or foot pedal has a strong image of using human power instead of power consumption, and the evaluation of energy saving effect has a big difference in recognition between corporate managers and their employees, There was resistance to use.

 Therefore, an object of the present invention is to provide a conveyor device that can confirm the energy saving effect while having the characteristic that no electric power is required.

 In the conveyor apparatus according to the first aspect of the present invention, when the work placing means disposed on one side of the pair of frames is placed on the placing table with the work transporting the transport path, whether or not the weight of the work is present. When the workpiece placement means descends by moving up and down, the workpiece is transferred to a transfer roller that moves the conveyance path. The elastic energy accumulating means accumulates the movement of the work placing means depending on the presence or absence of its own weight as elastic energy. The accumulation of the elastic energy is released at a predetermined movement position of the workpiece mounting means by the switching means, and the accumulation of the elastic energy is switched to the release. The elastic energy is converted into rotational motion by the reciprocating rotation converting means by the switching means, and a rotational force is applied through the endless track means spanned from the sprocket of the reciprocating rotation converting means to the sprocket of the drive roller. . In this way, the work placed on the placing table of the work placing means is transported along the transport path. The return means returns the position of the workpiece placing means to a predetermined initial position by the switching means.

Here, the pair of frames are separated from each other by a predetermined distance, and a conveyance path is provided between them. However, the pair of frames may be plate-shaped, tubular, pipe-shaped, or a combination thereof. In any case, it is only necessary that the wall surface on which the driving roller and the driven roller are disposed can be formed on both sides of the conveyance path.
Further, the drive roller and the driven roller are rollers that form the transport path rotatably supported by the pair of frames, and there are at least one drive roller, and The driven roller is provided between the driving rollers or facing the driving roller. These roller diameters and types, for example, roller conveyors or ball conveyors, and types of free bearings are not a problem.

 The workpiece mounting means is disposed on one side of the pair of frames, and moves the mounting table with or without the weight of the workpiece when the workpiece is transported on the transport path. The movement of the mounting table may be pivotally supported around a specific location, or may move up and down as a whole. In particular, what is necessary is just to mount the work on the transfer roller that moves the work path when the work table is lowered.

Furthermore, the elastic energy accumulating means accumulates the movement of the work placing means depending on the presence or absence of its own weight as elastic energy, for example, accumulates energy in an elastic body such as a coil spring. . That is, the potential energy of the work used as kinetic energy is accumulated.
The switching means is released at a predetermined position of the movement of the work placing means and switches from storing elastic energy to discharging the elastic energy storing means.

In addition, the reciprocating rotation converting means converts the elastic energy accumulated in the elastic energy accumulating means by the switching means from reciprocating motion to rotating motion.
The endless track means applies a rotational force by the sprocket of the reciprocating rotation conversion means through the endless track spanned over the sprocket of the drive roller, and the endless track is limited to an endless shape. However, depending on the arrangement location and the number of arrangements of the one-way clutch, it may be arranged as an end.
The return means returns the position of the workpiece placement means to a predetermined initial position by the switching means, and in particular releases the movement of the workpiece placement means at a predetermined position, and stores the elastic energy. What is necessary is just to return the position of the workpiece mounting means to a predetermined initial position at the timing of switching from accumulation of elastic energy to release to the means.

The pair of frames of the conveyor device according to the invention of claim 2 are provided with a plurality of support legs for supporting the pair of frames at a predetermined height.
Here, the pair of frames has at least one pair of support legs disposed at both ends thereof. However, one side or one end can be attached to another structure. It can respond by arranging. Of course, only one side can be a pair of support legs.

According to a third aspect of the present invention, the transfer roller to be replaced by the workpiece placing means of the conveyor device is disposed on the end side of the pair of frames.
Here, the transfer roller to be replaced by the workpiece placing means is disposed on the end side of the pair of frames, and the workpiece is moved by a load from the placement table of the workpiece placing means to the transfer roller. I can do it.

The conveying path formed by the pair of frames of the conveyor device according to the invention of claim 4 is a belt conveyor in which a belt is disposed between the driving rollers or between the driving roller and the driven roller. You can also
Here, the conveyor belt stretched between the drive rollers or between the drive roller and the driven roller has a necessary number of rollers to be held at an arbitrary position so as not to sink due to the weight of the work. Is done.

 When the work that transports the transport path is placed on the placing table of the work placing means of the conveyor device according to the invention of claim 5, the work is lowered by its own weight and the work placing means is lowered. When the transfer roller protrudes from the mounting table, the work is transferred onto the transfer roller.

In the placing table of the work placing means of the conveyor device according to the invention of claim 6, any one of a roller conveyer, a ball conveyer, a free bearing or a low friction material protrudes from the upper surface.
The mounting table of the workpiece mounting means is lowered by its own weight when the workpiece to be transported in the transport path is placed, and a transfer roller protrudes from the mounting table by which the workpiece mounting means descends, and the transfer Although it is mounted on the roller, there is a possibility of receiving contact resistance on the upper surface of the mounting table when moving after mounting. In order to reduce the contact resistance, either a roller conveyor, a ball conveyor or a low friction material such as Teflon (registered trademark) tape is provided.

The work placing means of the conveyor device according to the invention of claim 7 has two or more bars or plates that move up and down and are arranged in the width direction of the transport path.
Here, the two or more bars or plates that move up and down arranged in the conveyance path are arranged in the width direction, but may also be arranged in the length direction of the pair of frames. it can. Also, three or four can be arranged in the width direction and the length direction. However, if there are at least two, it is possible to move up and down without rotation on a stable central axis. Of course, even one can be produced.

The workpiece mounting means of the conveyor device according to the invention of claim 8 is pivotally supported on a pair of frame sides of the conveyance path and is rotatable.
Here, in the workpiece placing means that is pivotally supported on the pair of frames of the conveyance path and is rotatable, the axis support side may be the conveyance path side or the non-conveyance path side.

The elastic energy storage means of the conveyor device according to the invention of claim 9 is configured to be vertically movable with respect to the pair of frames.
The elastic energy storage means can be moved up and down in the vertical direction with respect to the transport path, that is, can move up and down.

The elastic energy storage means of the conveyor device according to the invention of claim 10 is arranged in parallel with the transport path.
The elastic energy storage means is movable in parallel with the transport path, but may be perpendicular to the transport path.

The reciprocating rotation converting means of the conveyor device according to an eleventh aspect of the invention converts the reciprocating operation into a rotating operation by a pinion gear meshing with a rack gear constituting the work placing means.
Here, the reciprocating rotation converting means for converting the reciprocating operation into the rotating operation by the pinion gear meshing with the rack gear constituting the work placing means can be replaced with an endless track such as a crank mechanism or a chain or a belt. .

The rotational movement only in a specific direction by the reciprocating rotation converting means of the conveyor device according to the invention of claim 12 is performed by a one-way clutch.
Here, the rotation in a specific direction can be controlled with high reliability, and energy loss can be reduced.

The conveyor device according to the first aspect of the present invention moves when the work is placed on a placing table of the work placing means disposed on one side of the pair of frames, and moves by its own weight. The elastic energy storage means stores the movement of the mounting table due to the weight of the workpiece in the means as elastic energy. The elastic energy storage to the elastic energy storage means is released at a predetermined movement position of the workpiece mounting means by the switching means, and the elastic energy storage is switched to the elastic energy release. At this time, the elastic energy accumulated in the elastic energy accumulating means by the switching means is converted into a rotational motion by the reciprocating rotation converting means, and the infinitely passed from the sprocket of the reciprocating rotation converting means to the sprocket of the drive roller. A rotational force is applied to the drive roller via the track means.
By this operation, the potential energy of the workpiece is converted into kinetic energy, and the workpiece travels on the conveyance path without requiring an external force. Further, the return means can be used repeatedly by returning the position of the work placing means to a predetermined initial position by the switching means.
Therefore, it can be a conveyor device that does not require any electric power, can be used for loading and unloading trucks, etc., and gives the user a feeling that it is not directly transferred by human energy, resulting in an energy saving effect. Can be raised.

 In addition to the effect of claim 1, since the pair of frames of the conveyor device of the invention of claim 2 are provided with a plurality of support legs for supporting at a predetermined height. It can be used for loading and unloading at a predetermined height as well as for use in a horizontal place. In addition, since the support legs are stabilized, the conveyor can be stably operated.

 Since the transfer roller for replacing the workpiece from the mounting table by the workpiece mounting means of the conveyor device of the invention of claim 3 is disposed on the end side of the pair of frames, In addition to the effect according to claim 2, since the length of the conveyor can be used effectively and the handling of the workpiece is an operation on the end side, loading or loading by manpower, lift or lifter Easy to unload.

 Since the conveying path formed by the pair of frames of the conveyor device of the invention of claim 4 is a belt provided between the drive rollers or between the drive roller and the driven roller, In addition to the effect described in any one of claims 1 to 3, it can be used as a belt conveyor and can be used for conveying small items.

 The work placing means of the conveyor device according to claim 5 is lowered by the weight of the work when the work is placed on the placing table, and a transfer roller is moved from the placing table by which the work placing means descends. Since it protrudes and the said workpiece | work transfers to the said transfer roller, in addition to the effect as described in any one of Claim 1 thru | or 4, without moving a workpiece | work manually from the said workpiece | work mounting means. The transfer roller can be replaced from the mounting table.

 In the conveyor table of the conveyor device according to the sixth aspect of the present invention, any one of low friction materials such as a roller conveyor, a ball conveyor, a free bearing, or a Teflon (registered trademark) tape protrudes on the mounting table on which the work mounting means descends. In addition to the effect described in any one of claims 1 to 5, when the workpiece is moved from the mounting table of the workpiece mounting means, the mounting table is described above. Even if it changes to the said transfer roller, the friction with the said workpiece | work sent with the said transfer roller and the said mounting base will lose | eliminate, and the moving distance of the said workpiece | work can be lengthened.

 The workpiece placing means of the conveyor device of the invention of claim 7 has two or more bars or plates that move up and down and are arranged in the width direction of the transport path. 6. In addition to the effect described in any one of 6 above, since the workpiece mounting means is configured to include the two or more bars or plates, the workpiece mounting means is rotated to the mounting table described above. Even if an external force is applied in the direction, the central axis does not become the center of rotation, so that stable operation can be performed without causing a failure.

 The workpiece placing means of the conveyor device according to an eighth aspect of the present invention is pivotally supported on a pair of frame sides of the conveying path so as to be rotatable, and therefore any one of the first to seventh aspects. In addition to the effect described in one, the pair of frames formed as the conveyance path can be integrated and moved without being disassembled when the conveyor is transferred.

 In addition to the effect described in any one of claims 1 to 7, the elastic energy storage means of the conveyor device of the invention of claim 9 is freely movable up and down in a direction perpendicular to the conveyance path. Thus, it is possible to arrange the components perpendicular to the conveying path of the conveyor, so that the configuration can be made reasonable, and the configuration can reduce the energy loss.

 In addition to the effect of any one of claims 1 to 7, the elastic energy storage means of the conveyor device according to claim 10 is arranged in parallel with the transport path. In addition, since the components can be arranged in parallel with the conveyor path, the overall height of the conveyor device can be set low.

 The reciprocating rotation converting means of the conveyor device according to an eleventh aspect of the invention converts the reciprocating action into a rotating action by a pinion gear meshing with a rack gear constituting the work placing means. In addition to the effect described in any one of the above, linear movement can be efficiently converted into rotational motion.

 Since the rotational movement only in a specific direction by the reciprocating rotation converting means of the conveyor device of the invention of claim 12 is performed by a one-way clutch, rotation in the specific direction can be obtained with high reliability and energy loss is also caused. Can be reduced. And size reduction is easy.

FIG. 1 is a perspective view showing the overall configuration of a conveyor apparatus according to Embodiment 1 of the present invention. Fig.2 (a) is a top view which shows the whole structure of the conveyor apparatus based on Embodiment 1 of this invention, (b) is a front view. FIG. 3 is a front view of the internal mechanism showing the configuration of the workpiece placing means, the elastic energy storage means and the like of the conveyor apparatus according to Embodiment 1 of the present invention. FIG. 4 is a right side view of the internal mechanism showing the configuration of the work placing means, the elastic energy storage means, and the like of the conveyor apparatus according to Embodiment 1 of the present invention. FIG. 5 is a left side view of the internal mechanism showing the configuration of the work placing means, the elastic energy storage means and the like of the conveyor apparatus according to Embodiment 1 of the present invention. FIG. 6 is a front view of an internal mechanism showing a configuration when workpieces such as workpiece placement means and elastic energy storage means of the conveyor apparatus according to Embodiment 1 of the present invention are placed. FIG. 7 is a front view of an internal mechanism on which workpieces such as workpiece placement means and elastic energy storage means of the conveyor apparatus according to Embodiment 1 of the present invention are placed and movement of the workpieces is shown. FIG. 8 is a front view of the internal mechanism showing completion of output of elastic energy for placing a work such as work placing means and elastic energy accumulating means of the conveyor apparatus according to Embodiment 1 of the present invention and urging movement of the work. 9A is a sectional view of the transfer roller according to Embodiment 1 of the present invention, taken along section line AA in FIG. 3, and FIG. 9B is a drive roller along section line BB in FIG. Sectional drawing, (c) is a sectional view of the pinion gear and the first sprocket along the cutting line CC in FIG. 3, and (d) is a sectional view of the one-way clutch, main sprocket and the like along the cutting line DD in FIG. FIG. 10 is an explanatory diagram for explaining the operation of the switching means of the conveyor device according to the first embodiment of the present invention, where (a) is an initial state, (b) is a released state, (c) is a release state of elastic energy, (D) shows a return completion state. FIG. 11 is an explanatory view for explaining the operation of the return means of the conveyor apparatus according to Embodiment 1 of the present invention, where (a) is an initial state, (b) is a released state, (c) is a release state of elastic energy, (D) is a return completion state, (e) is a bottom view showing a state viewed from below (a). FIG. 12A is a plan view showing the overall configuration of the conveyor apparatus according to Embodiment 2 of the present invention, and FIG. 12B is a front view. FIG. 13 is a right side view of the internal mechanism showing the configuration of the work placing means of the conveyor apparatus according to Embodiment 2 of the present invention. FIG. 14 is a left side view of the internal mechanism showing the configuration of the work placing means of the conveyor apparatus according to Embodiment 2 of the present invention. FIG. 15 is a front view of the internal mechanism showing the configuration of the work placing means and the like of the conveyor apparatus according to Embodiment 3 of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that, in each embodiment, the same reference numerals and the same reference numerals are the same or corresponding functional parts, and therefore, redundant description thereof will be omitted here, and only different points will be described.
[Embodiment 1]
First, Embodiment 1 of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 and 2 (a) and 2 (b), the conveyor device according to the first embodiment has a pair of frames 11a and 11b formed by assembling steel plates into a substantially quadrangular prism shape. Yes. The pair of frames 11a and 11b are provided with a driving roller 12 (see FIG. 9B) for applying rotation from a predetermined number of sprockets 12a and a rotatable driven roller 13. In the present embodiment, the driving roller 12 and the rotatable driven roller 13 are alternately disposed on the pair of frames 11a and 11b. However, when the present invention is implemented, the driving roller 12 is interposed between the driving rollers 12. The required number of driven rollers 13 can be provided. Further, at one end of the pair of frames 11a and 11b, that is, on the opposite side of the workpiece mounting means 20 described later, only a plurality of driven rollers 13 are provided, whereby stock for connection between conveyors is provided. A yard can also be formed. The pair of frames 11a and 11b are separated by a predetermined distance, and a conveyance path 14 is formed therebetween.
A transfer roller 18 (see FIG. 9B) that is rotated by a sprocket 18a is disposed at the ends of the pair of frames 11a and 11b.

As shown in FIGS. 3 to 11, work placing means 20 is disposed at the ends of the pair of frames 11 a and 11 b.
The workpiece mounting means 20 is supported by a shaft 22 on a pair of frames 11 a and 11 b with a shaft 22, and is rotatable about the shaft 22. That is, the free end side is rotated about the shaft 22 side, and the rotation of the free end is the vertical movement of the pair of rods 23 in the vertical direction. The pair of rods 23 are arranged in the width direction of the conveyance path 14 and move up and down. For this reason, the free end of the mounting table 21 and the upper ends of the pair of rods 23 are connected to each other so that the vertical movement of the rotation and the linear movement can be freely performed. The pair of rods 23 is disposed through a bearing 24 attached to the base body 30 and is guided by the bearing 24 so as to be able to stably move up and down.

 When the mounting table 21 arranged on one end side of the pair of frames 11a and 11b places a work W that transports the transport path 14 formed between the pair of frames 11a and 11b, The workpiece W is rotated about the shaft 22 by its own weight, and the workpiece W is placed on the transfer roller 18 that moves the conveyance path 14 along with the rotation. That is, the workpiece W is placed on the upper surface of the mounting table 21, but when the mounting table 21 rotates about the shaft 22 by its own weight, a pair of frames is formed from the plurality of openings 21 a formed in the mounting table 21. The upper side of the periphery of the transfer roller 18 disposed in 11 a and 11 b protrudes from the upper surface side of the mounting table 21.

 In principle, the relationship between the transfer roller 18 and the mounting table 21 is balanced when the upper surface of the mounting table 21 is flush with the peripheral surface of the transfer roller 18, but the mounting table 21 of the workpiece mounting means 20. At the same time or immediately before the upper surface of the transfer roller 18 becomes flush with the peripheral surface of the transfer roller 18, elastic energy storage in the elastic energy storage means 40, which will be described later, is canceled and the elastic energy storage is switched to the discharge. Due to the synergistic effect with the reduction, the peripheral surface of the transfer roller 18 protrudes from the mounting table 21.

 As shown in FIG. 4, each pair of rods 23 is fitted with each metal bearing 25 so that each rod 23 can freely move in the axial direction. Each metal bearing 25 is integrally connected by an attachment member 28 to which a rack gear 26 is integrally attached. The attachment member 28 connects the metal bearings 25 to each other by a contact member 27. The contact member 27 is in contact with the upper end of a spring 42 that stores elastic energy. Further, the contact member 27 is penetrated by a spring guide rod 41 disposed in the base body 30 constituting the frame of the conveyor device. The spring guide rod 41 is provided with a spring 42 for storing elastic energy. The spring 42 is arranged so that the other end of the spring 42 is in contact with the adjustment member 43 at the lower end of the spring guide rod 41. Therefore, the spring 42 attached to the spring guide rod 41 that stores elastic energy has an upper end that contacts the contact member 27, a lower end that contacts the lower end of the spring guide rod 41, and the spring 42 is moved by the movement of the contact member 27. It will be compressed and expanded. Note that the elasticity of the spring 42 can be changed by changing the position of the adjustment member 43 at the lower end of the spring guide rod 41. Therefore, the elasticity of the spring 42 can be adjusted according to the load of the workpiece W.

 The spring guide rod 41 disposed on the base 30 constituting the frame of the conveyor device, the spring 42 attached to the spring guide rod 41 for storing elastic energy, and the adjustment member with which the lower end of the spring 42 abuts at the lower end of the spring guide rod 41. 43, the abutting member 27 that abuts on the upper end of the spring 42 constitutes an elastic energy accumulating means 40 for accumulating, as elastic energy, the downward movement due to the weight of the work W in the work placing means 20 of the present embodiment.

Further, a mounting table 21 pivotally supported by one shaft 22 on a pair of frames 11a and 11b, a pair of two rods 23 connected to the mounting table 21, and a pair of rods 23 are provided. The mounting member 28 and the contact member 27 to which the metal bearings 25 and the rack gears 26 that connect the metal bearings 25 are attached constitute the workpiece placing means 20.
In particular, the metal bearing 25, the rack gear 26, the contact member 27, and the attachment member 28 that are mounted on the pair of rods 23 constitute a mover 60 of the work placing means 20.

 In addition, although the two rods 23 are made of a bar material, when the present invention is carried out, it can be made of a plate material or both. Further, the mounting member 28 that connects the metal bearings 25 is configured as a member separate from the rack gear 26, but a rack gear may be formed on the mounting member 28. The contact member 27 may also be formed integrally with the mounting member 28, or the mounting member 28 and the rack gear 26 may be formed integrally.

The mounting table 21 disposed on one side of the pair of frames 11a and 11b has its own weight when the work W transporting the transport path 14 formed between the pair of frames 11a and 11b is placed. The workpiece W is moved to the transfer roller 18 that moves the conveyance path 14 along with the movement, and the workpiece W is moved to the conveyance path 14.
That is, the elastic energy accumulating means 40 has the switching means 50 that cancels the accumulation of the elastic energy with respect to the spring 42 at a predetermined movement position of the workpiece mounting means 20 and switches the elastic energy accumulation to the release.

 As shown in FIG. 10, when the pair of rods 23 are lowered by the work W placed on the mounting table 21, the switching means 50 is simultaneously provided with the metal bearing 25 and the rack gear mounted on the pair of rods 23. The moving member 60 is lowered by the contact of the switching means 50 arranged at the lower end of the moving member 60 of the workpiece placing means 20 including the contact member 26 and the contact member 27. During this time, the mover 60 accumulates elastic energy in the spring 42.

 The switching means 50 is pivotally supported by the rotating shaft 51 at the lower end of the mounting member 28 to which the rack gear 26 of the moving element 60 is attached. The switching means 50 is in contact with the lower ends of the pair of rods 23 by the elastic force of the spring 54. And a lower engaging piece 52 for lowering the lower end of the pair of rods 23 when the lower engaging piece 52 is brought into contact with the upper end of a vertically movable adjustable releasing abutting piece 58 fixed to the base body 30 comprising the frame of the conveyor device. A release piece 53 for releasing the contact with the lower engagement piece 52 is provided. In this embodiment, such a configuration is provided as the switching means 50. However, when the present invention is implemented, it is only necessary to release from the outside and send it for a predetermined time to the initial set position.

 That is, as shown in FIG. 10A, the switching means 50 is configured such that when the pair of rods 23 is lowered by the work W placed on the mounting table 21, the lower engagement piece 52 is set to 1 by the elasticity of the spring 54. In a normal state, the lower engagement piece 52 is brought into contact with the lower end of the pair of rods 23 by the fixing portion 55 at the other end of the release piece 53 without depending on the elasticity of the spring 54. Therefore, the movable member 60 including the metal bearing 25, the rack gear 26, the contact member 27, and the attachment member 28 is lowered simultaneously with the lowering of the pair of rods 23.

 Further, as shown in FIG. 10B, when the pair of rods 23 are lowered by the work W placed on the mounting table 21, the release pieces are placed on the upper ends of the release contact pieces 58 provided on the base body 30. When 53 abuts, the release piece 53 pivots about the pivot shaft 53a, and the abutment state of the fixed portion 55 with the lower engagement piece 52 is released. As a result, the lower engagement piece 52 is in contact with the rod 23 against the elastic force applied to the moving element 60, so that the lower engagement piece 52 rotates around the rotation shaft 51, The contact state between the pair of rods 23 and the lower engagement piece 52 is released. In particular, a rotating ring member is disposed at the end of the contact portion of the lower engagement piece 52 with the rod 23 so that the engagement between the two can be easily released.

 When the contact state between the pair of rods 23 and the lower engagement piece 52 is released, the lower engagement piece 52 receives the elastic force of the spring 54 as shown in FIG. Due to the release of the elastic energy of the spring 42 of the energy storage means 40, the moving element 60 rises in contact with the periphery of the pair of rods 23, so that the lower engagement piece 52 contacts the periphery of the pair of rods 23. While rising. During this time, the elastic energy of the spring 42 of the elastic energy storage means 40 is released.

 Thereafter, the elastic energy of the spring 42 of the elastic energy storage means 40 is released, but the pair of rods 23 is pulled up by the return means 70 described later because the elastic energy release speed of the spring 42 of the elastic energy storage means 40 is increased. Since it is slow, the speed at which the pair of rods 23 are pulled up by the return means 70 is high, and the pair of rods 23 rises until the movement is stopped by the stopper 65. When the connecting member 71 comes into contact with the stopper 65, the upward movement of the pair of rods 23 is stopped. In the meantime, since there is no contact partner of the lower engagement piece 52, the lower engagement piece 52 rotates to the right by receiving the elastic force of the spring 54. As a result, the release piece 53 rotates about the rotation shaft 53a, and the fixing portion 55 enters the opening portion with the lower engagement piece 52, and maintains this state.

 Thereafter, when the elastic energy of the spring 42 of the elastic energy accumulating means 40 is released, the lower engaging piece 52 comes into contact with the lower ends of the pair of rods 23 that are in contact with the stopper 65 and stopped. Since the pair of rods 23 are stopped by the stoppers 65, the lower engagement pieces 52 are attached to the pair of rods 23 as well as the lower engagement pieces 52 are in contact with the lower ends of the pair of rods 23. The movement of the mover 60 of the work placing means 20 including the metal bearing 25, the rack gear 26, the contact member 27, and the mounting member 28 is stopped. That is, the release of the elastic energy of the spring 42 of the elastic energy storage means 40 is stopped.

 The return means 70 is attached to the lower part of the pair of rods 23, and includes a connecting member 71 that firmly fixes both of them, a pair of low-load springs 74a and 74b connected to the connecting member 71, and a pair of low-load springs. A pair of winders 72a and 72b for winding both sides of the load springs 74a and 74b are provided. The pair of winders 72a and 72b operate so as to wind up both sides of the low load springs 74a and 74b and wind up the connecting material 71 by springs (spring springs). One pair is arranged in consideration of the lifting balance of the connecting member 71. That is, the winding of the low-load springs 74a and 74b by the pair of winders 72a and 72b is the return of the work placing means 20 through the pair of rods 23. Therefore, the pair of winders 72a and 72b The load of 72b becomes the workpiece mounting means 20.

In the present embodiment, a pair of winders 72a and 72b that wind up both sides of the pair of low load springs 74a and 74b are used as the return means 70. However, when the present invention is implemented, It can also be set as the structure which pulls up the connection material 71 with a pulley and a weight. Further, the pair of low load springs 74a and 74b may be configured to pull up the connecting member 71 by a coil spring. Of course, only one pair of winders 72a and 72b can be provided. It can also be a wire or steel strip winder.
Furthermore, the stopper 65 is configured to abut against the connecting member 71 of the return means 70. However, when the present invention is implemented, stop control may be performed by a pair of winders 72a and 72b.

 As shown in FIGS. 5 to 8, the reciprocating rotation converting means 80 for converting the elastic energy stored in the elastic energy storing means 40 into a rotational motion is pivotally supported by the base body 30 meshing with the rack gear 26. The pinion gear 81 disposed on the rotating shaft 83 (see FIG. 9C), the first sprocket 82 disposed on the rotating shaft 83 coaxially with the pinion gear 81, and the first sprocket 82 and the chain 84 are connected. The second sprocket 85 and a one-way clutch 87 that outputs the main sprocket 92 only in a specific direction of rotation of the second sprocket 85.

 In the reciprocating rotation converting means 80, the linear movement is converted into a rotating movement by the pinion gear 81 meshed with the rack gear 26 that performs the linear movement by the work placing means 20, and further, the first sprocket 82 and the chain 84 that are coaxial with the pinion gear 81. The rotational speed of the second sprocket 85 is set so that the rotational speed of the first sprocket 82 is larger depending on the rotational ratio of the rotational speed with the connected second sprocket 85.

 The rotation of the second sprocket 85 is input to the one-way clutch 87 via a rotating shaft 86 (see FIG. 9D) that is pivotally supported by the base 30 and is connected to the main sprocket 92. Therefore, the rotation in the specific direction of the first sprocket 82, that is, the left rotation shown in FIG. 7 of the first sprocket 82 generated when the pinion gear 81 is raised is transmitted as the left rotation of the second sprocket 85. The rotation of the second sprocket 85 is input to the one-way clutch 87 via the rotating shaft 86, and the counterclockwise rotational force is output from the main sprocket 92.

 However, the rotation in the clockwise direction of FIG. 7 of the first sprocket 82 generated when the pinion gear 81 is lowered is transmitted as the rotation of the second sprocket 85 in the right direction. At this time, the rotation of the second sprocket 85 is the rotation axis. The one-way clutch 87 is input to the one-way clutch 87, but the rotation is not output from the one-way clutch 87, and the clockwise rotation force is not output from the main sprocket 92.

 Further, the left rotation shown in FIG. 7 of the first sprocket 82 generated when the pinion gear 81 is raised is transmitted as the left rotation of the second sprocket 85, and the rotation of the second sprocket 85 is further transmitted via the rotation shaft 86. Is input to the one-way clutch 87, and the rotational force of the left rotation is output from the main sprocket 92. However, when the ascent of the pinion gear 81 stops and the left rotation of the first sprocket 82 shown in FIG. Although the rotation of the left 85 is also stopped, the rotational energy transmitted through the one-way clutch 87 continues to be output as the inertial energy of the main sprocket 92, regardless of whether the second sprocket 85 stops rotating. On the other hand, the output side of the one-way clutch 87 rotates the main sprocket 92 by inertia energy. To continue.

 Therefore, the linear motion of the rack gear 26 is converted into the rotational motion of the pinion gear 81 by the pinion gear 81 meshed with the rack gear 26, and the rotation of the pinion gear 81 increases the rotational speed by the first sprocket 82 and the second sprocket 85, which is the rotational axis. The one-way clutch 87 is input via 86. The one-way clutch 87 drives only the rotation in a specific direction, but no force is transmitted for the rotation on the opposite side. That is, the rotational energy in one direction of the rotating shaft 86 is transmitted, but the rotational energy in the opposite direction is not transmitted, so that the clutch is disengaged at that time.

The output of this one-way clutch 87 is connected to the main sprocket 92. A chain 94 that is an endless track is hung on the main sprocket 92. Further, in order to take out the chain 94 to the pair of frames 11a and 11b without contacting the components of the base body 30, the chain guides 93a and 93b are disposed on both sides of the pair of frames 11a and 11b in the length direction. Has been.
The chain 94 is hung on the sprocket 18 a of the transfer roller 18, and then hung on the sprocket 12 a of the plurality of drive rollers 12. The slack of the chain 94 is supported by a necessary number of chain guides 93c.

 The main sprocket 92 and the required number of chain guides 93a, 93b, 93c are the endless track means 90 of the present embodiment by the sprocket 18a of the transfer roller 18, the sprocket 12a of the plurality of drive rollers 12, and the chain 94 hung on them. Is configured. That is, the endless track means 90 is such that the main sprocket 92 that receives the rotational force via the one-way clutch 87 transmits the rotational force to the sprocket 18 a of the transfer roller 18 and the sprocket 12 a of the drive roller 12.

 The base body 30 constitutes the frame of the conveyor apparatus according to the present embodiment. The conveyor apparatus according to the present embodiment includes a workpiece in the length direction of the pair of frames 11a and 11b. Two pairs of support legs 33 are disposed on the mounting means 20 side, and one pair of support legs 33 are disposed on the anti-work placement means 20 side.

 When the workpiece W is placed on the mounting table 21 of the workpiece mounting means 20 disposed on one side of the pair of frames 11a and 11b, the conveyor device according to the present embodiment moves by the weight of the workpiece W. The elastic energy storage means 40 stores the movement of the mounting table 21 due to the weight of the work W in the work mounting means 20 as elastic energy. The elastic energy storage 40 is released from the elastic energy storage unit 40 by the switching unit 50 at a predetermined movement position of the workpiece mounting unit 20 and switched from the elastic energy storage to the elastic energy release. At this time, the elastic energy accumulated in the elastic energy accumulating means 40 by the switching means 50 is converted into a rotational motion by the reciprocating rotation converting means 80, and the sprocket of the reciprocating rotation converting means 80, that is, the main sprocket 92 to the transfer roller 18. A rotational force is applied to the transfer roller 18 and the drive roller 12 through the endless track means 90 formed of the chain 94 spanned between the sprocket 18a and the sprocket 12a of the drive roller 12.

By this operation, the potential energy of the workpiece W is converted into kinetic energy, and the workpiece W travels on the conveyance path 14 without requiring an external force. Further, the return means 70 by the switching means 50 allows the repeated use by returning the position of the work placing means 20 to a predetermined initial position.
Therefore, it can be a conveyor device that does not require any electric power, can be used for loading and unloading trucks, etc., and gives the user a feeling that it is not directly transferred by human energy, resulting in an energy saving effect. Can be raised.

 As described above, the conveyor apparatus according to the present embodiment is pivotally supported by a pair of frames 11a and 11b and a pair of frames 11a and 11b that form a conveying path 14 therebetween at a predetermined distance, and is freely rotatable. A pair of driving rollers 12 forming a conveying path 14 attached to the shaft and a driven roller 13 pivotally supported by a pair of frames 11a and 11b and forming a conveying path 14 disposed between the driving rollers 12. When the work W that is disposed on one side of the frames 11a and 11b and transports the transport path 14 is placed on the mounting table 21, the work W is moved with or without its own weight, and the work W is moved along with the movement. The workpiece placing means 20 to be transferred to the transfer roller 18 as the movement of the transport path 14, and the elastic energy accumulating means for accumulating the movement of the workpiece placing means 20 by its own weight as elastic energy. 0 and the elastic energy accumulation in the elastic energy accumulating means 40 are canceled at a predetermined movement position of the mounting table 21 of the work placing means 20 and are switched by the switching means 50 and the switching means 50 for switching from elastic energy accumulation to release. The reciprocating rotation converting means 80 that converts the elastic energy accumulated in the elastic energy accumulating means 40 into a rotational motion only in a specific direction and the rotation of the sprocket of the reciprocating rotation converting means 80 are passed over the sprocket 12a of the drive roller 12. Further, the endless track means 90 provided through the endless track chain 94 and the return means 70 for returning the position of the mounting table 21 of the work mounting means 20 to a predetermined initial position by the switching means 50 are provided.

 When the workpiece W is placed on the placement table 21 of the workpiece placement means 20 disposed on one side of the pair of frames 11a and 11b, the conveyor device of the above embodiment moves with its own weight. The elastic energy storage means 40 stores the movement of the mounting table 21 due to the weight of the work W in the work mounting means 20 as elastic energy. The storage of the elastic energy in the elastic energy storage means 40 is canceled by the switching means 50 at a predetermined movement position of the workpiece mounting means 20, and the elastic energy storage is switched to the elastic energy release. At this time, the elastic energy accumulated in the elastic energy accumulating means 40 by the switching means 50 is converted into a rotational motion by the reciprocating rotation converting means 80, and the sprocket of the reciprocating rotation converting means 80, that is, the main sprocket 92 to the transfer roller 18. A rotational force is applied to the transfer roller 18 and the drive roller 12 through the endless track means 90 formed of the chain 94 spanned between the sprocket 18a and the sprocket 12a of the drive roller 12.

By this operation, the potential energy of the workpiece W is converted into kinetic energy, and the workpiece W travels on the conveyance path 14 without requiring an external force. Further, the return means 70 by the switching means 50 allows the repeated use by returning the position of the work placing means 20 to a predetermined initial position.
Therefore, it can be a conveyor device that does not require any electric power, can be used for loading and unloading trucks, etc., and gives the user a feeling that it is not directly transferred by human energy, resulting in an energy saving effect. Can be raised.

[Embodiment 2]
First, a second embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 12 (a) and 12 (b), FIG. 13 and FIG. 14, the conveyor apparatus according to the second embodiment includes elastic energy storage means 40, switching means 50, moving element 60, reciprocating rotation conversion means. 80, the first embodiment is a vertical type with respect to the pair of frames 11a and 11b, whereas the second embodiment is a parallel type with respect to the pair of frames 11a and 11b, that is, a horizontal type. is there.
The vertical displacement of the workpiece mounting means 20 is the vertical horizontal conversion shaft 211 provided vertically that constitutes the vertical horizontal conversion mechanism 210, the slider 212 that slides on the vertical horizontal conversion shaft 211, and the sliding thereof. The required number of chains 213 connected so that the vertical movement of the child 212 is input to the elastic energy storage means 40, and the vertical movement of the chain 213 is the horizontal movement of the auxiliary rod 216 instead of the pair of rods 23 Sprockets 214 and 215 convert vertical motion into horizontal motion.

Therefore, the conveyor device according to the second embodiment has the weight of the workpiece W when the workpiece W is placed on the placing table 21 of the workpiece placing means 20 disposed on one side of the pair of frames 11a and 11b. The movement of the mounting table 21 due to the weight of the workpiece W in the workpiece mounting means 20 is stored as elastic energy of the elastic energy storage means 40 via the vertical / horizontal conversion mechanism 210. The elastic energy storage 40 is released from the elastic energy storage unit 40 by the switching unit 50 at a predetermined movement position of the workpiece mounting unit 20 and switched from the elastic energy storage to the elastic energy release. At this time, the elastic energy accumulated in the elastic energy accumulating means 40 by the switching means 50 is converted into a rotational motion by the reciprocating rotation converting means 80, and the sprocket of the reciprocating rotation converting means 80, that is, the main sprocket 92 to the transfer roller 18. A rotational force is applied to the transfer roller 18 and the drive roller 12 through the endless track means 90 formed of the chain 94 spanned between the sprocket 18a and the sprocket 12a of the drive roller 12.
By this operation, the potential energy of the workpiece W is converted into kinetic energy, and the workpiece W travels on the conveyance path 14 without requiring an external force. Further, the return means 70 by the switching means 50 allows the repeated use by returning the position of the work placing means 20 to a predetermined initial position.

[Embodiment 3]
First, Embodiment 3 of the present invention will be described with reference to FIG.
As shown in FIG. 15, the conveyor device according to the third embodiment moves up and down so that the mounting table 21 of the workpiece mounting means 20 is parallel to the pair of frames 11 a and 11 b. . That is, the mounting table 21 moves up and down at right angles to the pair of rods 23. Further, a conveying belt 17 is stretched between the driving roller 12 at the end and the driven roller 13 at the end with respect to the pair of frames 11 a and 11 b, and the necessary number is provided between the driving roller 12 and the driven roller 13. An ultra-small wheel conveyor (ultra-small roller conveyor) is provided. The chain guides 93d, 93e, 93f are arranged as necessary.

In the conveyor device according to the third embodiment, when the work W is placed on the mounting table 21 that moves in parallel with respect to the pair of frames 11a and 11b, the pair of rods 23 are lowered by the weight of the work W. Along with the lowering, the work W is placed on the transfer roller 18 that moves the conveyance path 14. That is, the work W is placed on the upper surface of the mounting table 21, but when the mounting table 21 is lowered by its own weight, the work W is disposed on the pair of frames 11 a and 11 b from the plurality of openings 21 a formed in the mounting table 21. The upper side around the transfer roller 18 is projected to the upper surface side of the mounting table 21.
The transfer roller 18 and the mounting table 21 are balanced when the upper surface of the ultra-small wheel conveyor on the upper surface of the mounting table 21 is flush with the peripheral surface of the transfer roller 18, and the workpiece mounting means 20 has inertia, At the same time or immediately before the upper surface of the mounting table 21 is flush with the peripheral surface of the transfer roller 18, the elastic energy storage in the elastic energy storage means 40, which will be described later, is canceled, and the elastic energy storage is switched to the release. Due to the synergistic effect with the reduction of the load, the peripheral surface of the transfer roller 18 protrudes from the mounting table 21.

 Due to the release of the elastic energy of the spring 42 of the elastic energy accumulating means 40, the moving element 60 rises in a state where it contacts the periphery of the pair of rods 23. When the elastic energy of the spring 42 of the elastic energy storage means 40 is released, the main sprocket 92 passes through the endless track means 90 comprising the chain 94 spanned from the sprocket 18a of the transfer roller 18 and the sprocket 12a of the drive roller 12. A rotational force is applied to the transfer roller 18 and the drive roller 12. By this operation, the potential energy of the workpiece W is converted into kinetic energy, and the workpiece W travels on the conveyance path 14 without requiring an external force.

 As described above, the conveyor apparatus according to each of the above embodiments is pivotally supported by a pair of frames 11a and 11b and a pair of frames 11a and 11b that form a conveyance path 14 between them at a predetermined distance. A driving roller 12 that forms a freely mounted conveying path 14, a driven roller 13 that is pivotally supported by a pair of frames 11a and 11b and that forms a conveying path 14 disposed between the driving rollers 12, and A conveying belt 17 stretched between the driving roller 12 and the driven roller 13 and a work W that is disposed on one side of the pair of frames 11a and 11b and conveys the conveying path 14 is placed on the mounting table 21. The workpiece W is moved up and down linearly depending on whether or not the workpiece W has its own weight, and the workpiece mounting means 20 for transferring the workpiece W to the transfer roller 18 that moves the conveyance path 14 along with the movement, The elastic energy accumulating means 40 for accumulating the linear up-and-down movement by the dead weight of the workpiece W as elastic energy, and the elastic energy accumulation in the elastic energy accumulating means 40 are released at a predetermined movement position of the mounting table 21 of the workpiece mounting means 20 Switching means 50 for switching from accumulation to release of elastic energy, reciprocating rotation converting means 80 for converting the elastic energy accumulated in the elastic energy accumulating means 40 by the switching means 50 into rotational motion only in a specific direction, and reciprocating rotation An endless track means 90 for applying the rotation of the sprocket of the conversion means 80 via the chain 94 of the endless track that is stretched over the sprocket 12 a of the drive roller 12, and the switching means 50 of the mounting table 21 of the workpiece mounting means 20. And return means 70 for returning the position to a predetermined initial position. It is.

 Therefore, when the workpiece W is placed on the placing table 21 of the workpiece placing means 20 disposed on one side of the pair of frames 11a and 11b, the conveyor device according to each of the above embodiments is caused by its own weight. The elastic energy accumulating means 40 accumulates the linear up-and-down movement of the mounting table 21 due to the weight of the workpiece W in the workpiece mounting means 20 as elastic energy. The elastic energy storage 40 is released from the elastic energy storage unit 40 by the switching unit 50 at a predetermined movement position of the workpiece mounting unit 20 and switched from the elastic energy storage to the elastic energy release. At this time, the elastic energy accumulated in the elastic energy accumulating means 40 by the switching means 50 is converted into a rotational motion by the reciprocating rotation converting means 80, and the sprocket of the reciprocating rotation converting means 80, that is, the main sprocket 92 to the transfer roller 18. A rotational force is applied to the transfer roller 18 and the drive roller 12 through the endless track means 90 formed of the chain 94 spanned between the sprocket 18a and the sprocket 12a of the drive roller 12.

By this operation, the potential energy of the workpiece W is converted into kinetic energy, and the workpiece W travels on the conveyance path 14 without requiring an external force. Further, the return means 70 by the switching means 50 allows the repeated use by returning the position of the work placing means 20 to a predetermined initial position.
Therefore, it can be a conveyor device that does not require any electric power, can be used for loading and unloading trucks, etc., and gives the user a feeling that it is not directly transferred by human energy, resulting in an energy saving effect. Can be raised.

 The pair of frames 11a and 11b of the conveyor apparatus according to the above embodiment is provided with a plurality of support legs 33 for supporting at a predetermined height. It can be used for loading or unloading at a predetermined height. Further, since the support leg 33 is stabilized, the belt conveyor or the roller conveyor can be stably operated.

The transfer roller 18 for transferring the workpiece W from the mounting table 21 by the workpiece mounting means of the conveyor apparatus of the above embodiment is disposed on the end side of the pair of frames 11a and 11b. Since the work W can be effectively used and the work W is placed on the mounting table 21 by the operation on the end side, loading or unloading by a hand, a lift or a lifter is easy.
Further, the conveying path 14 formed by the pair of frames 11a and 11b of the conveyor device of the above embodiment has a belt disposed between the driving rollers 12 or between the driving roller 12 and the driven roller 13, so that the belt conveyor And can be used for transporting small items. That is, it can be used as a roller conveyor or a belt conveyor.

When the work W is placed on the mounting table 21, the work placing unit 20 of the conveyor apparatus according to the above-described embodiment is lowered by the weight of the work W, and the transfer roller 18 is moved from the placing table 21 where the work placing unit 20 is lowered. Since the workpiece W protrudes and transfers to the transfer roller 18, the workpiece W can be transferred from the mounting table 21 to the transfer roller 18 without being manually moved from the workpiece mounting means 20.
And in the mounting base 21 which the workpiece | work mounting means 20 of the conveyor apparatus of the said embodiment descend | falls, either a roller conveyor or a ball conveyor, a free bearing, or a low friction material protrudes and is arrange | positioned. If there is, when the workpiece W is moved from the mounting table 21 of the workpiece mounting means 20, even if the workpiece W is transferred from the mounting table 21 to the transfer roller 18, the friction between the workpiece W sent by the transfer roller 18 and the mounting table 21 is reduced. Thus, the moving distance of the workpiece W can be increased. Here, as the low friction material, there is a Teflon (registered trademark) tape or the like.

The workpiece placing means 20 of the conveyor device according to the above embodiment has a pair of rods 23 that move up and down arranged in the width direction of the conveyance path 14 when the width of the conveyance path 14 can be secured or in the length direction. When the interval can be ensured, a structure having two or more bars or plates can be obtained. That is, if the workpiece mounting means 20 is configured to include two or more bars or plates, even if an external force in the rotation direction is applied to the mounting table 21 of the workpiece mounting means 20, its central axis rotates. Since it is not central, stable operation can be performed without causing a failure.
Furthermore, since the workpiece mounting means 20 of the conveyor apparatus of the above embodiment is pivotally supported on the pair of frames 11a and 11b side of the conveyance path 14 and is rotatable, it is formed as the conveyance path 14. The pair of frames 11a and 11b can be integrated and moved without being disassembled when the conveyor is transferred.

Since the elastic energy storage means 40 of the conveyor device of the above embodiment can be moved up and down in the vertical direction with respect to the conveyance path 14, components can be arranged vertically with respect to the conveyance path 14 of the conveyor. It can be set as a structure without an energy loss, and can be set as a structure with little energy loss.
Furthermore, if the elastic energy accumulating means 40 of the conveyor device of the above embodiment is arranged in parallel with the conveying path 14, the components can be arranged in parallel with the conveying path 14 of the conveyor. Can be set low.

Since the reciprocating rotation converting means 80 of the conveyor device of the above embodiment converts the reciprocating operation into a rotating operation by the pinion gear 81 meshing with the rack gear 26 constituting the work placing means 20, the linear movement is efficiently rotated. Can be converted into motion.
In addition, since the rotational movement only in a specific direction by the reciprocating rotation conversion means 80 of the conveyor device of the above embodiment is performed by the one-way clutch 87, rotation in the specific direction can be obtained with high reliability, and Energy loss can also be reduced. And size reduction is easy.

By the way, in the said embodiment, although the required number of sprockets are used, when implementing this invention, the number of sprockets is not limited, and the movement direction of the workpiece | work W should just be specified. In addition, the drive energy is transmitted as a chain and a sprocket. However, when the present invention is carried out, other belts, link mechanisms, etc. can be used. And the sprocket are efficiently assembled.
In the above embodiment, the one-way clutch 87 is used as means for converting elastic energy into rotational motion only in a specific direction, but a ratchet mechanism or the like can also be used. The one-way clutch 87 used in the above was efficient.
Furthermore, in the above embodiment, the elastic energy storage in the elastic energy storage means is constituted by the spring 42. However, when the present invention is carried out, the elastic energy storage means can be used in the elastic region of the elastic body. Good.

W Workpieces 11a, 11b A pair of frames 12 A driving roller 12a A sprocket 13 A driven roller 14 A conveying path 18 A transfer roller 18a A sprocket 20 A work placing means 21 A placing table 23 A pair of rods 25 A metal bearing 26 A rack gear 27 A contact member 28 A mounting member DESCRIPTION OF SYMBOLS 30 Base body 33 Support leg 40 Elastic energy storage means 41 Spring guide rod 42 Spring 50 Switching means 51 Rotating shaft 52 Lower engaging piece 53 Release piece 60 Mover 70 Restoring means 80 Reciprocating rotation conversion means 81 Pinion gear 82 First sprocket 87 One-way clutch 90 Endless track means 92 Main sprocket 94 Chain

Claims (12)

A pair of frames separated by a predetermined distance and having a conveyance path therebetween;
A drive roller that is pivotally supported by the pair of frames and forms the transport path rotatably mounted;
A driven roller that is pivotally supported by the pair of frames and forms the conveying path disposed between the driving rollers;
When a work disposed on one side of the pair of frames and transporting the transport path is placed on a mounting table, the work moves with or without its own weight, and the work is transported along with the movement. A workpiece mounting means for transferring to a transfer roller as a path movement;
Elastic energy storage means for storing movement due to the weight of the work in the work placement means as elastic energy;
The elastic energy storage in the elastic energy storage means is canceled at a predetermined movement position of the mounting table of the workpiece mounting means, and switching means for switching from the elastic energy storage to the release,
Reciprocating rotation converting means for converting the elastic energy accumulated in the elastic energy accumulating means by the switching means into a rotational motion only in a specific direction;
Endless track means for imparting the rotation of the sprocket of the reciprocating rotation conversion means via an endless track spanned over the sprocket of the drive roller;
A conveyor apparatus, comprising: a return means for returning the position of the mounting table of the workpiece mounting means to a predetermined initial position by the switching means.  The conveyor device according to claim 1, wherein the pair of frames are provided with a plurality of support legs for supporting the conveyance path at a predetermined height.  The conveyor according to claim 1 or 2, wherein a transfer roller for transferring the workpiece from the mounting table by the workpiece mounting means is disposed on an end portion side of the pair of frames. apparatus.  4. The conveyance path formed by the pair of frames includes a conveyance belt disposed between the drive rollers or between the drive roller and the driven roller. The conveyor apparatus as described in any one.  The workpiece placing means is lowered by its own weight when the workpiece to be conveyed on the conveyance path is placed, and the transfer roller protrudes from the placing table on which the workpiece placing means descends, and the workpiece is The conveyor device according to any one of claims 1 to 4, wherein the conveyor device is replaced with a transfer roller.  The roller table, ball caster, free bearing or low friction material is provided on the upper surface of the mounting table of the workpiece mounting means so as to protrude from the upper surface. The conveyor device according to any one of 5.  The workpiece mounting means comprises any one of two or more bars or plates that move up and down and are arranged in the width direction of the conveyance path. The conveyor apparatus as described in any one.  The conveyor apparatus according to any one of claims 1 to 7, wherein the workpiece placing means is pivotally supported on an end side of the pair of frames and is rotatably arranged. .  The conveyor device according to any one of claims 1 to 8, wherein the elastic energy storage means is vertically movable with respect to the pair of frames.  The conveyor device according to any one of claims 1 to 8, wherein the elastic energy storage means is movable in parallel with the pair of frames.  The conveyor according to any one of claims 1 to 10, wherein the reciprocating rotation converting means converts a reciprocating operation into a rotating operation by a pinion gear meshing with a rack gear constituting the work placing means. apparatus.  The conveyor device according to any one of claims 1 to 11, wherein the reciprocating rotation conversion means performs a rotational motion only in a specific direction by a one-way clutch.

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