JP2008143717A - Roller type conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate assembly of a roller type conveyor, to reduce the cost, and to facilitate adjustment. <P>SOLUTION: The roller type conveyor is provided with conveyor frames 10 and 20 forming a pair of arrangement passages, a plurality of roller units 40 continuously arranged on the pair of the arrangement passages, one drive source 50, and a connection drive shaft 60 connecting the roller units on the conveyor frames. The roller unit is provided with a unit case having a shape conforming to the arrangement passage and demarcating one end face and the other end face in the arrangement direction, a plurality of rollers 42 rotatably arranged in the unit case, a plurality of rotating shafts 43 transmitting rotational driving force to the plurality of the rollers, a plurality of roller gears 44 rotating integrally with the plurality of the rotating shafts, and a plurality of idle gears 45 rotatably arranged in the unit case in the state of being meshed with the plurality of the roller gears. Thus, assembly time is reduced, and the cost can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a roller-type conveyor that conveys an object, and more particularly to a roller-type conveyor that is applied in a production line for automobile parts or electrical parts.

  As a conventional roller type conveyor, for example, a conveyor frame, a plurality of rollers arranged on the conveyor frame, a plurality of roller gears arranged coaxially with the rollers, and a plurality of idle gears intervening between the roller gears A device including a gear, a motor that exerts a driving force, and the like is known (see Patent Document 1).

The plurality of rollers, the roller gears, the plurality of idle gears, and the like are respectively attached to predetermined positions provided on the conveyor frame, and are positioned to adjust the meshing state. Yes.
Japanese Patent Laid-Open No. 2001-171816

By the way, in the conventional roller type conveyor, since a plurality of rollers, roller gears, a plurality of idle gears, etc. are individually assembled to the conveyor frame, the assembling work is complicated and it takes a long time to complete the assembly. Cost.
Further, when re-adjustment of the meshing state after once assembled, it is necessary to adjust adjacent gears, which causes complicated adjustment work.
Furthermore, after assembly, for example, when both gears are damaged by biting foreign matter between the gears, each gear must be removed and replaced, such as replacement work, adjustment work, etc. Incurs complications.

  The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to facilitate assembly work, shorten assembly time, reduce assembly cost, and facilitate adjustment. It is providing the roller type conveyor which can perform etc.

A roller type conveyor according to the present invention includes a conveyor frame that forms a pair of array paths extending in a direction of transporting an object to be transported, a plurality of roller units continuously arranged on the pair of array paths, and a plurality of roller units A driving source that exerts a driving force on at least one of the pair, a roller unit arranged in one of the pair of arrangement paths, and a roller unit arranged in the other arrangement path to transmit the driving force The roller unit has a shape that fits the arrangement path and defines one end surface and the other end surface in the arrangement direction, and a plurality of rollers that are rotatably arranged in the unit case; A plurality of rotating shafts that transmit rotational driving force to a plurality of rollers, a plurality of roller gears that rotate integrally with the plurality of rotating shafts, and a plurality of roller gears. Having a plurality of idle gears which are rotatably arranged in the unit case in a state, it is characterized in that.
According to this configuration, the assembly of the roller conveyor can be completed only by continuously arranging the plurality of modularized roller units on the pair of arrangement paths on the conveyor frame. Thereby, assembly time can be shortened and assembly cost can be reduced. Further, for example, it is possible to cope with various conveyor frames having different lengths only by changing the number of roller units arranged. That is, the cost of the roller type conveyor can be reduced by adopting a versatile roller unit.

In the above configuration, one idle gear of the plurality of idle gears is arranged such that a part of the tooth surface protrudes from one end surface of the unit case, and one of the plurality of rollers is formed on the outer peripheral surface. A part of the roller unit is arranged so as to protrude from the other end surface of the unit case, and the plurality of roller units meshes the protruding idle gear with a roller gear included in another adjacent roller unit, and the protruding It is possible to adopt a configuration in which one roller is continuously arranged on the arrangement path so as to enter a region of a unit case included in another adjacent roller unit.
According to this configuration, when a plurality of roller units are continuously arranged on the arrangement path of the conveyor frame, the gears of adjacent roller units can be easily engaged. As a result, the assembling work is facilitated, and the removing work is facilitated when, for example, one roller unit is removed from the plurality of roller units arranged in succession.

The said structure WHEREIN: The structure which the connection hole which connects the connection drive shaft for transmitting a driving force to the other roller unit arrange | positioned in parallel is formed in the end surface of a some rotating shaft is employable.
According to this configuration, by attaching the coupling drive shaft to the coupling hole, for example, the driving force of one roller unit arranged in parallel so as to extend in the transport direction can be transmitted to the other roller unit. . In addition, by providing connection holes in all of the plurality of rotating shafts, an optimal number of connection drive shafts can be attached at optimal positions, thereby achieving smooth conveyance.

In the above configuration, the plurality of rollers are surrounded by the unit case so that at least the outer peripheral surface that supports the transported body is exposed, and the plurality of roller gears and the idle gear are arranged so that at least the end surfaces are exposed from the unit case. The configuration can be adopted.
According to this configuration, since the roller is disposed near the center of the unit case, the rotating shaft can be supported on both sides of the roller, and the support rigidity of the roller can be increased.

The said structure WHEREIN: The part exposed from the unit case of several roller gears and idle gears can be employ | adopted as the structure covered with the conveyor frame and sealed.
According to this configuration, in the case of a roller unit of a type in which the gear portion is exposed from the unit case, the gear portion is covered and sealed by the conveyor frame, so that foreign matter can be caught on the tooth surface. It can be prevented, and it can also be a safety measure for workers and the like, and can further reduce the noise caused by the meshing of gears.

In the above configuration, a configuration in which the plurality of roller gears and the idle gear are surrounded by the unit case and the plurality of rollers are disposed so as to be exposed from the unit case can be adopted.
According to this configuration, since the roller gear and the idle gear are surrounded by the unit case, it is possible to prevent foreign matter from entering or biting into the tooth surface without taking any other special sealing means. The noise caused by the meshing of the gears can be reduced.

The said structure WHEREIN: The structure which has a rail part which demarcates an arrangement path can be employ | adopted for the conveyor frame.
According to this configuration, when the roller units are arranged on the conveyor frame, the roller units can be arranged while being positioned with high accuracy simply by dropping the roller units onto the rail portion.

The said structure WHEREIN: The structure which has a side wall part extended perpendicularly | vertically in the one side part of a rail part can be employ | adopted for the conveyor frame.
According to this configuration, by simply dropping the roller unit into the rail portion and arranging it, for example, the side wall portion can be opposed to the end face of the roller gear and the idle gear exposed from the unit case, and easily from the side. Can be covered.

According to the roller type conveyor having the above configuration, by adopting a roller unit modularized in advance by integrating a plurality of rollers, roller gears, idle gears, etc., and arranging the roller units on the arrangement path, The roller type conveyor can be easily assembled, the assembly time can be shortened, and the assembly cost can be reduced. Furthermore, convenience such as carrying around during assembly is improved, and maintenance after assembly is facilitated.
In addition, the roller gears and idle gears are housed in a sealed space by the unit case or in cooperation with the conveyor frame, thereby preventing the gears from being damaged by preventing foreign matter from entering or biting into the tooth surfaces. In addition, the operator can be prevented from getting caught in the tooth surface, and noise caused by the meshing of the gears can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIGS. 1 to 3 are a plan view and a partial sectional view showing an embodiment of a roller type conveyor according to the present invention, and FIGS. 4 to 6 show an embodiment of a roller unit included in the roller type conveyor. FIG. 2 is a side view, a plan view, and a cross-sectional view.

  This roller type conveyor is continuously arranged on a pair of conveyor frames 10 and 20 extending in a direction L for conveying the transported object W, a support base 30 for supporting the conveyor frames 10 and 20, and the conveyor frames 10 and 20. A plurality of roller units 40, a motor 50 as a driving source that exerts a driving force on one roller unit 40, a roller unit 40 disposed on one conveyor frame 10, and a roller unit disposed on the other conveyor frame 20 40, a connecting drive shaft 60 and the like are provided.

As shown in FIGS. 2 and 3, the conveyor frames 10 and 20 include rail portions 11 and 21 that define an arrangement path for arranging the roller units 40, and side wall portions 12 and 22 that extend vertically outside the rail portions 11 and 21. Etc. are formed.
The rail portions 11 and 21 are formed by mounting surfaces 11a and 21a on which the roller unit 40 is mounted, and guides 11b, 21b, 11c, and 21c that protrude on both sides of the mounting surfaces 11a and 21a.

  As shown in FIGS. 3 to 6, the roller unit 40 has a unit case 41 having a substantially rectangular parallelepiped shape, a plurality of rollers 42 rotatably arranged in the unit case 41, and the respective rollers 42. A plurality of rotating shafts 43 that transmit rotational driving force, a plurality of roller gears 44 that rotate integrally with the respective rotating shafts 43, and a unit case 41 that is interposed between and meshed with the plurality of roller gears 44. It is formed by a plurality of idle gears 45 and the like that are movably arranged.

  The unit case 41 is a die-cast product in which aluminum is molded using a mold, and a first case 41 ′ and a second case 41 ″ that are molded are fastened by bolts 46 and nuts 46a, respectively. The rail portions 11 and 21 (mounting surfaces 11a and 21a) are formed to fit.

  As shown in FIGS. 6A and 6B, the unit case 41 supports a fitting portion 41 a that fits a bearing 47 that supports a rotating shaft 45 a of the idle gear 45 and a rotating shaft 43 of the roller gear 44. A fitting portion 41b that fits the bearing 48, an opening portion 41c that exposes a part (outer peripheral surface 42a) of the roller 42, an opening portion 41d that exposes an end surface 43a of the rotating shaft 43, and both ends in the arrangement direction are defined. It is formed by one end face 41e and the other end face 41f.

  The roller gear 44 and the rotating shaft 43 are integrally formed by forging. As shown in FIG. 6B, the end surface 43a of the rotating shaft 43 is connected to a connecting drive shaft 60 as shown in FIG. A square connecting hole 43b is formed by forging. The roller gear 44 is rotatably supported at a predetermined position of the unit case 41 while the movement in the axial direction is restricted by the bearing 48 and the snap ring 48a fitted to the unit case 41.

  The roller 42 is supported by the rotating shaft 43. When the load W is smoothly transferred and the load applied to the roller 42 is equal to or lower than a predetermined level, the roller 42 rotates integrally with the rotating shaft 43. When W is stopped by a stopper or the like and the load due to frictional force or the like with the conveyed object W exceeds a predetermined level, the rotation is stopped and the rotary shaft 43 is idled. It is a friction roller to which a rotational driving force is transmitted by a frictional force of a fitting surface. The roller 42 is surrounded by the unit case 41 so that the outer peripheral surface 42a that supports the transport target W is exposed from the opening 41c.

The idle gear 45 and the rotating shaft 45a are formed by forging in the same manner as described above. As shown in FIG. 6A, the idle gear 45 has an end surface for connecting the drive shaft 51 of the motor 50 to the end face. A deformed hole 45b other than a circle (for example, hexagonal, square, etc.) is formed by forging.
The idle gear 45 is supported at a predetermined position of the unit case 41 by the bearing 47 and the snap ring 47a fitted to the unit case 41 so that the movement in the axial direction is restricted.

In the roller unit 40, three rollers 42, a roller gear 44, and three idle gears 45 are incorporated. As shown in FIGS. 4 and 5, one idle gear among the three idle gears 45 is provided. 45 is formed such that a part of its tooth surface protrudes from the one end surface 41e of the unit case 41 in the arrangement direction L. One of the three rollers 42 has a part of its outer peripheral surface. The unit case 41 is formed so as to protrude from the other end surface 41f of the unit case 41 in the arrangement direction L, and the one end surface 41e is formed with a recess 41e ′ for receiving the protruding roller 42 of another roller unit 40 disposed adjacent thereto. Yes.
Therefore, when the roller units 40 are continuously arranged, the protruding roller 42 on the other end side of the adjacent roller unit 40 is inserted into the recess 41e ′ of the installed roller unit 40, and By incorporating the roller gear 44 on the other end side of the adjacent roller unit 40 into mesh with the protruding idle gear 45 of the installed roller unit 40, a plurality of roller units 40 can be easily arranged. it can.

  That is, the plurality of roller units 40 mesh one protruding idle gear 45 with a roller gear 44 included in another adjacent roller unit 40, and one protruding roller 42 is adjacent to another roller unit 40. Are arranged continuously on the arrangement path (rail portions 11, 21) so as to enter the region of the unit case 41 included. As a result, the assembling work is facilitated, and the removing work is facilitated when, for example, one roller unit 40 is removed from the plurality of continuously arranged roller units 40.

Further, in the roller unit 40, the roller 42 is disposed at a substantially central portion of the unit case 41, and the rotating shaft 43 is supported by the bearings 48 on both sides of the roller 42. As a result, it is possible to reliably support and transport even a heavy load W.
Further, since the unit case 41 of the roller unit 40 is molded by a mold, bearings 47 and 48 are attached to the fitting portions 41a and 41b formed at predetermined positions, and the idle gear 45, the roller gear and the rotating shaft are attached. By simply mounting 43, centering of gears and the like can be performed automatically. Therefore, it can be assembled with high accuracy by a simple assembling operation.

Next, a procedure for assembling the roller type conveyor by incorporating the roller unit 40 into the conveyor frames 10 and 20 will be described.
First, as shown in FIGS. 1 and 2, a plurality of roller units 40 are sequentially dropped and arranged on the rail portions 11 and 21 (mounting surfaces 11a and 21a) on the pair of conveyor frames 10 and 20. To go. At this time, the adjacent roller units 40 are connected by abutting the end faces of the unit case 41 so that one roller gear 44 and the other idle gear 45 are engaged with each other.

  Subsequently, the roller unit 40 disposed on one conveyor frame 10 and the roller unit 40 disposed on the other conveyor frame 20 are coupled to coupling holes 43b formed on the end surfaces 43a of the respective rotation shafts 43. A drive shaft 60 is mounted. As shown in FIG. 2, the coupling drive shaft 60 is formed by two shafts 61 and 62 and a joint 63 that couples them.

  Therefore, after the shaft 61 is fitted into the connecting hole 43b of the one rotating shaft 43 and the shaft 62 is fitted into the connecting hole 43b of the other rotating shaft 43, the joint 63 prevents the both from falling out of the connecting hole 43b. Adjust. In addition, although the one connection drive shaft 60 was attached here, you may attach the some connection drive shaft 60 to a required position suitably.

  Subsequently, as shown in FIG. 2 and FIG. 3, the cover 14 is disposed from above the arranged roller units 40 in a state where the seal 13 is in contact with the upper surface of the unit case 41, and the side walls are formed by bolts 15 and nuts 15a. It fixes to the parts 12 and 22. Further, a guide 16 for guiding the transport target W is disposed on the cover 14 and fixed by bolts 17 and nuts 17a.

As described above, by attaching the cover 14 together with the seal 13 from above the unit case 41, the roller unit 40 can be pressed down and fixed securely, and the roller gear 44 and the idle gear 45 exposed from the unit case 41 can be secured. Can be covered with the side wall part 12, the cover 14, and the seal 13 and accommodated in the sealed space.
As a result, foreign matter can be prevented from entering the space where the roller gear 44 and the idle gear 45 are arranged, or foreign matter can be caught in the tooth surface, and damage to the gear can be prevented. Further, it is possible to suppress the noise generated by the meshing of the gears from leaking to the outside, and the noise can be reduced.

  Finally, as shown in FIGS. 1 and 2, in order to apply a driving force to one roller unit 40, a drive shaft 51 is fitted into a deformed hole 45 b formed in the idle gear 45, and the motor 50 Is fixed to the support base 30. This completes the assembly of the roller conveyor.

  As described above, since the assembly of the substantially entire assembly is completed simply by arranging the modularized roller units 40 on the conveyor frames 10 and 20, the assembly work is simplified, and the time required for the assembly work is shorter than in the past. Shortening the assembly cost. In addition, after assembling, for example, when removing one roller unit 40, for example, by rotating the idle gear 45 and pulling up the unit case 41, the unit case 41 can be easily removed, and maintenance and the like can be easily performed. it can.

7 to 10 show another embodiment of the roller type conveyor according to the present invention. FIGS. 7 to 9 are a side view, a plan view and a sectional view, and FIG. 10 is a partial section shown with a conveyor frame. FIG.
As shown in FIG. 10, the pair of conveyor frames 100 and 200 includes rail portions 101 and 201 that define an arrangement path in which the roller units 400 are arranged, sidewall portions 102 and 202 that extend vertically outside the rail portions 101 and 201, and the like. It is formed by. The rail portions 101 and 201 are formed by mounting surfaces 101a and 201a on which the roller unit 400 is mounted, guides 101b and 201b that protrude on one end side of the mounting surfaces 101a and 201a, and the like.

  As shown in FIGS. 7 to 9, a roller unit 400 included in the roller conveyor includes a unit case 401 having a substantially rectangular parallelepiped shape, a plurality of rollers 402 arranged in a freely rotatable manner in the unit case 401, A plurality of rotating shafts 403 that transmit rotational driving force to the respective rollers 402, a plurality of roller gears 404 that rotate integrally with the respective rotating shafts 403, and a plurality of roller gears 404 that are interposed between and mesh with each other. Thus, the unit case 401 is formed by a plurality of idle gears 405 and the like that are rotatably arranged.

  The unit case 401 is a die-cast product in which aluminum is molded by a die, and a bearing for supporting the rotating shaft 403 of the roller gear 404 is provided in the unit case 401 as shown in FIGS. 7 to 9A and 9B. A fitting portion 401a for fitting 407, a fitting portion 401b for fitting a bearing 408 for supporting the rotating shaft 405a of the idle gear 405, a recess for receiving the tooth surfaces of the roller gear 404 and the idle gear 405 and exposing the end face. 401c, one end face 401e and the other end face 401f, a lower face 401g, side faces 401h, 401i and the like defined at both ends in the arrangement direction. Further, the lower surface 401g of the unit case 401 is formed so as to be compatible with rail portions 101 and 201 (mounting surfaces 101a and 201a) as an arrangement path of the conveyor frames 100 and 200 described later.

  The roller gear 404 and the rotating shaft 403 are integrally formed by forging. As shown in FIGS. 7 and 9A, the connecting drive shaft 60 is connected to the end surface 403 a of the rotating shaft 403. A hexagonal connection hole 403b is formed by forging. The roller gear 404 and the rotating shaft 403 are supported by the bearing 407 and the snap ring 407a fitted in the unit case 401 so that the roller gear 404 and the rotating shaft 403 are pivotable while being restricted from moving in the axial direction at predetermined positions of the unit case 401. Has been.

  The roller 402 is supported by a rotating shaft 403 at a position exposed from the unit case 401, and is a friction roller similar to that described above, to which a rotational driving force is transmitted to a load of a predetermined level or less.

  The idle gear 405 and the rotating shaft 405a are formed by forging in the same manner as described above. As shown in FIG. 9B, the idle shaft 405 has an end face for connecting the drive shaft 51 of the motor 50 to the end face. A deformed hole 405b other than a circle (for example, a hexagon, a quadrangle, etc.) is formed by forging. The idle gear 405 is supported at a predetermined position of the unit case 401 by the bearing 408 and the snap ring 408a fitted in the unit case 401 so that the movement in the axial direction is restricted.

  In the roller unit 400, three rollers 402 and a roller gear 404 and three idle gears 405 are incorporated. As shown in FIGS. 7 and 8, one idle gear among the three idle gears 405 is provided. 405 is formed such that a part of its tooth surface protrudes from the one end surface 401e of the unit case 401 in the arrangement direction L, and one of the three rollers 402 has a part of its outer peripheral surface. The unit case 401 is formed so as to protrude from the other end surface 401 f of the unit case 401 in the arrangement direction L.

  Therefore, when the roller units 400 are continuously arranged, the protruding roller 402 on the other end side of the roller unit 400 adjacent to the region of the unit case 401 of the installed roller unit 400 (the region facing the side wall 401i). And the roller gear 404 on the other end side of the roller unit 400 adjacent to the protruding idle gear 405 of the installed roller unit 400 is engaged so as to mesh with the plurality of roller units 400. Can be easily arranged.

  That is, the plurality of roller units 400 meshes one protruding idle gear 405 with a roller gear 404 included in another adjacent roller unit 400, and one protruding roller 402 is adjacent to another roller unit 400. Are arranged continuously on the arrangement path (rail portions 101 and 201) so as to enter the region of the unit case 401 included in the unit case 401. As a result, the assembling work is facilitated, and the removing work is facilitated when, for example, one roller unit 400 is removed from the plurality of continuously arranged roller units 400.

Further, in the roller unit 400, since the tooth surfaces of the roller gear 404 and the idle gear 405 are accommodated in the concave portion 401c of the unit case 401, the roller unit 400 is completely exposed even when carried alone. Compared with the above-described embodiment, it is possible to prevent biting of foreign matter and the like, and to prevent the operator's fingers and the like from being caught.
Further, since the unit case 401 of the roller unit 400 is molded by a mold, similarly to the above, bearings 407, 408 and the like are attached to the fitting portions 401a, 401b molded at predetermined positions, and the roller gear 404 and By simply mounting the rotating shaft 403 and the idle gear 405, the gears and the like can be automatically centered, and can be assembled with high accuracy by a simple assembling operation.

Next, a procedure for assembling a roller type conveyor by incorporating the roller unit 400 into the conveyor frames 100 and 200 will be described.
First, the plurality of roller units 400 are sequentially arranged so that the side surface 401h abuts against the side wall portions 102 and 202 with respect to the rail portions 101 and 201 (mounting surfaces 101a and 201a) on the pair of conveyor frames 100 and 200. Drop it and arrange it. At this time, the adjacent roller units 400 are connected by abutting the end faces of the unit case 401 so that one roller gear 404 and the other idle gear 405 are engaged with each other.

  Subsequently, the roller unit 400 disposed on one conveyor frame 100 and the roller unit 400 disposed on the other conveyor frame 200 are coupled to coupling holes 403b formed on the end surfaces 403a of the respective rotary shafts 403. A drive shaft 60 is mounted.

  Subsequently, as shown in FIG. 10, a guide 103 for guiding the transport target W is arranged in contact with or close to the upper surface of the unit case 401 from above the arranged roller units 400, and the bolts 104 and nuts are arranged. It fixes to the side wall parts 102 and 202 by 104a. Thereafter, as described above, the assembly is completed by attaching the motor 50.

As described above, the end surfaces of the roller gear 404 and the idle gear 405 exposed from the unit case 401 are brought into a sealed space by bringing the side surface 401h of the unit case 401 into contact with the side wall portions 102 and 202 of the conveyor frames 100 and 200. Can be accommodated.
As a result, foreign matter can be prevented from entering the space where the roller gear 404 and the idle gear 405 are disposed, or foreign matter can be caught in the tooth surface, and damage to the gear can be prevented. Further, it is possible to suppress the noise generated by the meshing of the gears from leaking to the outside, and the noise can be reduced.
Further, by attaching the guide 103, the roller unit 400 can be prevented from falling off or can be fixed securely.

  FIGS. 11 to 14 show another embodiment in which the roller unit 400 shown in FIGS. 7 to 10 is partially changed. The same components are denoted by the same reference numerals, and the description thereof is omitted. In the roller unit 400 ′, as shown in FIGS. 11 to 14, the rotating shaft 403 ′ is supported by the bearing 407 on both sides of the roller gear 404, and the bearing on the both sides of the idle gear 405. The rotary shaft 405a ′ is supported by 408.

  That is, the unit case 410 is a die-cast product in which aluminum is molded by a mold, and as shown in FIGS. 12 to 14, the molded case 410 ′ and the case cover 410 ″ are fastened by bolts and nuts, respectively. It is. Accordingly, the roller gear 404 and the idle gear 405 are covered and completely sealed by the case cover 410 ″ while being accommodated in the recess 401 c of the case 410.

The rotation shaft 403 ′ is substantially the same as the rotation shaft 403 except that the roller gear 404 is positioned substantially at the center and a deformed hole 403 c for coupling the drive shaft 51 is provided on the other end surface. Further, the rotation shaft 405a ′ is substantially the same as the rotation shaft 405a except that the idle gear 405 is positioned substantially at the center. In other words, the bearings 407 and 408 disposed on both sides of the roller gear 404 and the idle gear 405 can more reliably prevent the rotation shafts 403 ′ and 405a ′ from being inclined.
Further, as shown in FIGS. 11 and 12, in the roller unit 400 ′, one of the idle gears 405 of the three idle gears 405 has a tooth surface part of the unit case 410 as in the above-described embodiment. One of the three rollers 402 is formed so as to protrude from the other end surface 401f of the unit case 410 in the arrangement direction L. Is formed.

  Therefore, when the roller units 400 ′ are continuously arranged, the protrusion on the other end side of the roller unit 400 ′ that is adjacent to the region of the unit case 410 of the installed roller unit 400 ′ (the region facing the side wall 401i). Incorporating the roller gear 404 on the other end side of the roller unit 400 ′ adjacent to the protruding idle gear 405 of the installed roller unit 400 ′ so that the roller 402 is inserted, A plurality of roller units 400 ′ can be easily arranged.

  That is, the plurality of roller units 400 ′ meshes one protruding idle gear 405 with a roller gear 404 included in another adjacent roller unit 400 ′, and one protruding roller 402 is connected to another adjacent roller. It arranges continuously on an arrangement path (rail part 101, 201) so that it may enter into the field of unit case 410 contained in unit 400 '. As a result, the assembling work is facilitated, and the removing work is facilitated when, for example, one roller unit 400 ′ is removed from the plurality of roller units 400 ′ arranged in series.

  In the roller unit 400 ′, the roller gear 404 and the idle gear 405 are surrounded and completely sealed by the unit case 410. Therefore, even when the roller unit 400 ′ is carried alone, foreign matter is caught in the roller unit 400 ′. In addition, the operator's fingers can be prevented from being caught. Further, even after being incorporated in the roller type conveyor, it is possible to prevent foreign matter from entering or biting into the tooth surface without taking any special sealing means, and to reduce noise caused by gear meshing.

In the above embodiment, the case where the rollers 42 and 402, the roller gears 44 and 404, and the idle gears 45 and 405 incorporated in the roller units 40, 400, and 400 'are each shown as three, but the present invention is not limited thereto. However, it is possible to incorporate two or four or more modules.
In the above embodiment, the unit cases 41, 401, and 410 are linearly extended. However, the present invention is not limited thereto, and the roller gear and the idle gear are bevel gears (conical gears). It is also possible to employ a curved unit case that is formed and arranged such that the roller gear and the idle gear are curved. Furthermore, the connecting holes 43b and 403b provided in the rotating shafts 43, 403, and 403 ′ may be polygons other than hexagons or other irregular holes.
The unit cases 41, 401, and 410 are not limited to die-cast products, and may be formed by press products or other methods as long as a predetermined dimensional accuracy can be ensured.

  Further, in the above embodiment, the roller gears 44 and 404 and the rotary shafts 43 and 403, the idle gears 45 and 405, and the rotary shafts 45a, 405a, and 405a ′ are formed by forging, but may be formed by machining. . In addition, the configuration in which the idle gear 45 is provided with the deformed hole 45b to connect the drive shaft 51 is shown, but the present invention is not limited to this, and an idle gear directly connected to the output shaft of the motor 50 may be employed.

It is a top view which shows one Embodiment of the roller type conveyor which concerns on this invention. It is sectional drawing of the roller type conveyor shown in FIG. It is the expanded sectional view which expanded a part of roller type conveyor shown in FIG. It is a side view which shows one Embodiment of the roller unit contained in the roller-type conveyor shown in FIG. It is a top view of the roller unit shown in FIG. (A) is sectional drawing in the position of AA in FIG. 5, (b) is sectional drawing in the position of BB in FIG. It is a side view which shows other embodiment of the roller unit contained in the roller type conveyor which concerns on this invention. It is a top view of the roller unit shown in FIG. (A) is sectional drawing in the position of CC in FIG. 8, (b) is sectional drawing in the position of DD in FIG. FIG. 10 is an enlarged cross-sectional view illustrating a state in which the roller unit illustrated in FIGS. 7 to 9 is incorporated in a conveyor frame. It is a side view which shows other embodiment of the roller unit contained in the roller type conveyor which concerns on this invention. It is a top view of the roller unit shown in FIG. (A) is sectional drawing in the position of EE in FIG. 12, (b) is sectional drawing in the position of FF in FIG. It is an expanded sectional view which shows the state which integrated the roller unit shown in FIG. 11 thru | or 13 in the conveyor frame.

Explanation of symbols

10, 20, 100, 200 Conveyor frame 11, 21, 101, 201 Rail section (array path)
12, 22, 102, 202 Side wall 13 Seal 14 Cover 16, 103 Guide L Arrangement direction 40, 400, 400 ′ Roller unit 41, 401, 410 Unit case 41e, 401e One end surface 41f, 401f The other end surface 42, 402 Roller 43 , 403, 403 ′ Rotating shaft 43a, 403a End face 43b, 403b Connecting hole 44, 404 Roller gear 45, 405 Idle gear 45b, 403b Deformed hole 50 Motor (drive source)
51 Drive shaft 60 Connection drive shaft

Claims (8)

Driven by at least one of the plurality of roller units, a conveyor frame forming a pair of array paths extending in the direction of transporting the object to be transported, a plurality of roller units continuously arranged on the pair of array paths A driving source that exerts a force, and a connecting drive shaft that transmits a driving force by connecting a roller unit arranged in one of the pair of arrangement paths and a roller unit arranged in the other arrangement path. ,
The roller unit has a shape that fits the arrangement path and defines one end surface and the other end surface in the arrangement direction, a plurality of rollers that are rotatably arranged in the unit case, and the plurality of rollers A plurality of rotating shafts that transmit a rotational driving force to the rollers, a plurality of roller gears that rotate integrally with the plurality of rotating shafts, and a rotation to the unit case in mesh with the plurality of roller gears Having a plurality of idle gears arranged freely,
A roller type conveyor characterized by that. One idle gear of the plurality of idle gears is arranged such that a part of its tooth surface protrudes from one end surface of the unit case,
One of the plurality of rollers is arranged such that a part of the outer peripheral surface thereof protrudes from the other end surface of the unit case,
The plurality of roller units meshes the one idle gear with the roller gear included in another adjacent roller unit, and the region of the unit case included in the other roller unit adjacent to the one roller Continuously arranged on the arrangement path so as to enter
The roller type conveyor according to claim 1. A connection hole for connecting a connection drive shaft for transmitting a driving force to another roller unit arranged in parallel is formed on end surfaces of the plurality of rotation shafts.
The roller type conveyor according to claim 1, wherein the roller type conveyor is provided. The plurality of rollers are surrounded by the unit case so that at least an outer peripheral surface supporting the transported body is exposed, and the plurality of roller gears and the idle gear are arranged so that at least end surfaces thereof are exposed from the unit case. ing,
The roller type conveyor according to any one of claims 1 to 3, wherein Portions exposed from the unit case of the plurality of roller gears and idle gears are covered and sealed by the conveyor frame,
The roller type conveyor according to claim 4. The plurality of roller gears and the idle gear are surrounded by the unit case, and the plurality of rollers are disposed so as to be exposed from the unit case.
The roller type conveyor according to any one of claims 1 to 3, wherein The conveyor frame has a rail portion that defines the arrangement path,
The roller type conveyor according to claim 1. The conveyor frame has a side wall portion extending vertically at one side portion of the rail portion,
The roller type conveyor according to claim 7.

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