JP2007261741A - Vibration type powder and granular material feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration type powder and granular material feeding device which stably feeds a fixed amount of powder and granular material having specific gravity of 2 or more to the next process and dispenses with watching by a person at all times. <P>SOLUTION: The vibration type powder and granular material feeding device 10 is provided with: a bowl 20 forming a conveyance passage 22 spirally in the inside; and a vibration part 30 for vibrating this bowl 20 to convey the powder and granular material charged into an internal bottom part 23 of the bowl 20 upward along the conveyance passage 22 and to feed a fixed amount of powder and granular material to the next process at all times by vibrating the bowl 20. A carry-out port 24 in which size of opening from a conveyance face in the conveyance passage 22 is substantially equal to the size of powder and granular material, is formed along a conveyance face on an outer peripheral wall 21 of the bowl 20 in the vicinity of a terminal part 22b of the conveyance passage 22, and the terminal part 22b of the conveyance passage 22 is made to be a drop part 26 for dropping surplus powder and granular material untransitable through the carry-out port 24, onto a predetermined position in the bowl 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an oscillating powder and granular material supply apparatus for quantitatively supplying granular materials to the next step. In particular, the present invention relates to an oscillating powder supply device capable of supplying a powder having a specific gravity of 2 or more to the next process.

  Various powders are produced in various fields, and trough-type feeding devices and screw-type feeding devices have been used as devices for quantitatively supplying the generated powders to the next process. Yes.

  This trough type supply device has a hopper having an upper opening and a narrow lower end for charging the powder, and the lower end of the hopper is disposed at one end with a gap between the hopper and the other end of the powder. A long trough provided with a carry-out port and a vibration part for vibrating the trough are provided. Then, when the granular material is introduced from the upper part of the hopper, an amount of the granular material corresponding to the caliber is supplied from the lower end of the hopper onto the trough, and then the trough is vibrated to bring the granular material on the trough to the carry-out port. It moves toward the next process from the carry-out exit.

  In such a trough type supply device, if the lower end of the hopper is too close to the trough and the interval becomes narrow, the granular material will be clogged between them, and conversely if it is too far away, the granular material will jump from the trough. And sometimes dance. Therefore, in the trough supply device, it is extremely difficult to adjust the distance between the lower end of the hopper and the trough. If this distance cannot be adjusted well, human monitoring is always required, and as a result, it is difficult to automate. Met.

  In addition, the hopper of this trough type supply device has an upper opening that is wide so that it is easy to throw in the granular material, and a lower end that is narrow to control the supply amount to the trough with the diameter of the lower end. Therefore, there is a possibility that the granular material forms a bridge at the portion where the inner diameter of the hopper is narrowed, and the granular material is clogged at that portion.

  On the other hand, the screw-type supply device includes an outer pipe provided with a carry-in port through which powder particles are introduced at the rear end and a carry-out port through which powder particles are carried out to the next process at the tip, and the outer pipe. And a screw inserted rotatably. And by supplying a granular material from a carrying-in port, the granular material will be extruded to the carrying-out port at the front-end | tip by rotation of a screw.

  In the screw type supply device which becomes like this, friction and pressure are applied to the granular material by the rotation of the screw, so that the surface of the granular material is scratched or removed when it is carried out. Have been agglomerated in a lump.

  Therefore, conventionally, Patent Document 1 has proposed a granular material supply device that solves the above problems in the trough-type supply device and the screw-type supply device (see FIG. 7).

  This granular material quantitative supply device 100 includes a ball 120 in which a conveyance path 122 is formed in a spiral shape, and a vibration unit (not shown) that vibrates the ball 120. In addition, the powder and granular fixed amount supply device 100 vibrates the ball 120 to convey the powder charged in the central portion 124 of the inner bottom portion of the ball 120 upward along the conveyance path 122, thereby conveying the conveyance path. A fixed amount of powder particles is always supplied to the next process from the supply hole 123 formed in the vicinity of the terminal end of 122. Since this powder and granular fixed amount supply apparatus 100 does not use a hopper, there is no need for constant monitoring by a person, so that the supply apparatus 100 can be almost automated and does not cause friction or pressure on the granular material. Therefore, there is no possibility that the granular material is damaged or agglomerated and carried out.

  In addition, as shown in FIG. 7, a plate-like gate 125 is provided at a predetermined distance from the outer peripheral wall 121 in the powder and granular constant supply device 100 in front of the supply hole 123 on the conveyance path 122. It has been. Thereby, the passage amount of the granular material that has risen to the outermost periphery of the conveyance path 122 due to vibration is limited by the gate 125, and the granular material that has passed between the gate 125 and the outer peripheral wall 121 is gradually increased. It progresses to the supply hole 123 while spreading to the peripheral side, and only the granular material applied on the supply hole 123 falls and is carried out to the next process. This granular material fixed supply apparatus 100 changes the space | interval of the gate 123 and the outer peripheral wall 121, the position of the supply hole 123, and the diameter of the supply hole 123 suitably, The amount of the granular material carried out to the next process The structure can be adjusted.

Furthermore, this granular material fixed quantity supply apparatus 100 shows the granular material which could not pass between the gate 125 and the outer peripheral wall 121 on the inner conveyance path 122 along the gate 125 as shown by the arrow in the figure. In addition, the granular material that could not be dropped into the supply hole 123 is dropped onto the inner conveyance path 122 along the reflux groove 126 provided at the back of the supply hole 123 as indicated by an arrow in the figure. . Therefore, since these excess powder particles can be refluxed again to the outermost periphery of the conveyance path 122, the powder particle fixed amount supply apparatus 100 can be easily automated.
Japanese Patent Laid-Open No. 5-17023

  By the way, when a granular material having a specific gravity of 2 or more is charged into the above-described granular material quantitative supply device 100, the granular material is approaching the outer peripheral wall surface of the conveyance path 122. This tendency becomes more prominent as the specific gravity of the granular material to be introduced is larger. Therefore, since the high specific gravity granular material that has passed between the gate 125 and the outer peripheral wall 121 cannot spread on the inner peripheral side and does not pass over the supply hole 123, the granular material is carried out to the next process. I could not.

  Moreover, since such a high specific gravity granular material will approach a wall surface as above-mentioned, another granular material is piled up on the granular material which is advancing along the outer peripheral wall 121. Not a few. However, the above-mentioned powder and granular fixed amount supply apparatus 100 is based on the premise that the powder is always spread on the transport path 122 and does not assume that the powders are stacked on the transport path 122. Assuming that the granular material is carried out from the supply hole 123, the amount of the granular material carried out is larger than the specified amount and carried out to the next process, and there is a problem that the quantitative supply of the granular material cannot be performed.

  The present invention has been made in view of the actual situation, and the object thereof is to stably and quantitatively supply a granular material having a specific gravity of 2 or more to the next process, and it does not require constant monitoring by a human. The object is to provide a body supply device.

  In order to solve the above-mentioned problems, the vibratory granular material supply device of the present invention includes a ball having a conveying path formed in a spiral shape therein and a vibrating unit that vibrates the ball, and vibrates the ball. In the vibratory granular material supply apparatus, the granular material charged into the inner bottom portion of the ball is conveyed upward along the conveying path, and a constant amount of granular material is always supplied to the next process. In the vicinity of the end portion of the path, on the outer peripheral wall of the ball, an exit height is formed along the transport surface, the height of the opening from the transport surface of the transport path being substantially equal to the size of the granular material, The terminal part of the conveyance path is a drop part that drops excess powder particles that could not pass through the carry-out port to a predetermined position in the ball.

  According to the present invention as described above, in the vicinity of the end portion of the conveyance path, a carry-out port having an opening height substantially equal to the size of the granular material from the conveyance surface of the conveyance path is formed along the conveyance surface on the outer peripheral wall of the ball. Therefore, even if the granular material is stacked on another granular material, only the lowermost granular material can be stably and quantitatively supplied from the carry-out port to the next process.

  Moreover, since the terminal part of the conveyance path is a dropping part that drops excess powder particles that could not pass through the carry-out port to a predetermined position in the ball, the excess powder particles are again transferred to the upper part of the conveyance path. It can be refluxed and the supply device can be easily automated.

  Further, the carry-out port may be configured by forming an open portion along the transport path on the outer peripheral wall of the ball and providing a restriction plate in the open portion so as to be movable up and down.

  In this case, since the opening height of the carry-out port can be adjusted in accordance with the size of the charged granular material, the size of the granular material that can be conveyed by this vibrating powder supply device is It is no longer limited to one type, and it is possible to transport large and small powders.

  The inner bottom of the ball may have a center bulged into the ball.

  In this case, since the center of the inner bottom portion of the ball bulges into the ball, it is possible to further promote the movement of the granular material usually caused by vibration toward the outer peripheral wall.

  Thereby, since it is possible to make the granular material reach the starting end portion (upper part of the granular material) of the conveying path formed on the inner surface of the outer peripheral wall earlier, the granular material is not interrupted on the conveying path, A fixed amount of granular material can be carried out from the carry-out port.

  Moreover, the inner bottom part of the said ball | bowl may be provided with the granular material guide wall between the center and the inner periphery of the starting edge part of a conveyance path.

  In this case, normally, the granular material is rotated many times in a spiral manner from the inner bottom to the outer peripheral wall by vibration, and since the granular material guiding wall is provided, the rotating granular material is The rotational motion is stopped in contact with the granular material guide wall. The stopped granular material is moved in the outer peripheral direction along the granular material guiding wall by vibration, and the granular material is collected to the start end portion of the conveyance path.

  Thereby, since a granular material can be made to arrive at the start end part of the conveyance path formed in the outer peripheral wall inner surface earlier, there is no possibility that the granular material is interrupted on the conveyance path, and a fixed amount of granular material from the carry-out port. Can be carried out satisfactorily.

  Further, the vibration unit may be one in which the amplitude of vibration can be changed.

  In this case, since the moving speed of the granular material in the ball can be easily controlled by changing the amplitude of the vibration part, the moving speed of the granular material is too fast and the granular material is excessively placed on the conveyance path, Moreover, it can prevent that a moving speed is too slow and a granular material interrupts on a conveyance path.

  In addition, a detection means for detecting the presence or absence of the powder passing through the carry-out opening is provided at the carry-out port of the conveyance path, and when the passage of the powder is not detected by the detection means, the powder is not detected. An informing means for informing the passage may be provided.

  In this case, if there is a problem such as a shortage of powder in the ball or other troubles, or a problem that the powder does not pass through the carry-out port, this problem is immediately detected by the detection means, and a problem has occurred. This can be notified to the worker by the notification means.

  The vibratory granular material supply device of the present invention can stably supply a granular material having a specific gravity of 2 or more to the next process, and can be easily automated because it does not require constant monitoring by a person. .

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 and FIG. 2 are perspective views from different viewpoints showing the vibratory granular material supply device according to the present embodiment, and FIGS. 3 and 4 show the vibratory granular material according to the present embodiment. It is a perspective view from another viewpoint which shows the other example of a supply apparatus, respectively.

  The vibratory granular material supply apparatus 10 according to the present embodiment includes a ball 20 and a vibration unit 30.

  The ball 20 forms a base for conveying the charged granular material to the next process. The ball 20 includes an outer peripheral wall 21 and a conveyance path 22 formed in a spiral shape inside the ball 20. As the balls 20, the inner diameter of the conveyance path 22 as shown in FIGS. 1 and 2 is constant from the start end 22 a to the end end 22 b, or the conveyance path 22 as shown in FIGS. 3 and 4. The inner diameter is increased from the start end 22a to the end end 22b.

  The said conveyance path 22 is a path | route for conveying the granular material on the inner bottom part 23 upwards. The transport path 22 is formed so as to spirally rise from the start end portion 22a to the end portion 22b, and a carry-out port 24 is formed in the outer peripheral wall 21 of the ball near the end portion 22b. The end portion 22b is a dropping portion 26 that drops the granular material. The length of the conveying path 22 is not particularly limited as long as it can convey the granular material. For example, the conveying path 22 may have a length that makes a half turn of the ball 20, or a length that makes several turns of the ball 20. There may be.

  The carry-out port 24 is for carrying out the granular material on the conveyance path 22 to the next process. The carry-out port 24 is carried on the outer peripheral wall 21 of the ball 20 in the vicinity of the end portion 22b of the carry path 22 by the carry-out outlet 24 having an opening height that is substantially equal to the size of the granular material from the carry surface of the carry path 22. It is formed along the surface.

  Here, the high specific gravity granular material having a specific gravity of 2 or more reaches the carry-out port 24 in a state of being close to the outer peripheral wall 21 side by vibration and further moves to the outer peripheral wall 21 side. Since the carry-out port 24 is provided on the outer peripheral wall 21 of the ball 20 as described above, this high specific gravity powder is automatically carried out from the carry-out port 24 by vibration.

  In addition, the granular material having a high specific gravity may accumulate on the outer peripheral wall 21 side of the conveyance path 22 due to vibration and reach the carry-out port 24. At that time, the carry-out port 24 is formed on the outer peripheral wall 21 of the ball 20 along the carrying surface so that the opening height has a height substantially equal to the size of the granular material from the carrying surface of the carrying path 22. Therefore, only the lowermost granular material among the granular materials stacked on the outer peripheral wall 21 side of the conveyance path 22 can be carried out from the carry-out port 24. Therefore, the carry-out amount of the granular material carried out from the carry-out port can always be a constant amount.

  The carry-out port 24 is configured by forming an open portion 24a along the transport path 22 in the outer peripheral wall 21 of the ball 20 and providing a restriction plate 24b in the open portion 24a so as to be movable up and down. Is preferred. In this case, since the opening height of the carry-out port can be adjusted in accordance with the size of the charged granular material, the size of the granular material that can be conveyed by this vibrating powder supply device is It is no longer limited to one type, and it is possible to transport large and small powders.

  The dropping unit 26 is for dropping excess powder particles that could not pass through the outlet 24 to a predetermined position in the ball 20. The form of the drop portion 26 is not particularly limited. For example, as shown in FIG. 2, the width of the end portion 22b of the transport path 22 is gradually narrowed, and the end portion 22b of the transport path 22 is interrupted. And the like. As described above, since the end portion 22b of the transport path 22 is the drop section 26, excess powder particles that could not pass through the carry-out port 24 are dropped to a predetermined position of the ball 20 and are again advanced on the transport path 22. Therefore, the vibrating powder supply apparatus 10 can be automated.

  As shown in FIG. 5, the inner bottom 23 of the ball 20 is preferably shaped such that its center 23a bulges into the ball. As described above, the center 23a of the inner bottom 23 of the ball 20 bulges and the inclination is formed, so that it is possible to further promote the movement of the granular material normally caused by vibration toward the outer peripheral wall 21. Therefore, since the granular material can reach the start end portion 22a of the conveying path 22 formed on the inner surface of the outer peripheral wall 21 more quickly, the granular material is not interrupted on the conveying path 22, and from the carry-out port 24. A fixed amount of granular material can be carried out satisfactorily.

  In addition, as shown in FIG. 6, it is preferable to provide a granular material guide wall 27 on the inner bottom portion 23 of the ball 20 between the center 23 a and the inner peripheral edge of the starting end portion 22 a of the conveying path 22. Usually, when the granular material is rotated by the vibration on the inner bottom 23 gradually and spirally around the inner periphery 23, since the granular material guide wall 27 is provided, the rotating granular material is provided. Comes into contact with the granular material guide wall 27 and the rotational motion is stopped. Since the stopped granular material is moved in the outer peripheral direction along the granular material guiding wall 27 by vibration, the granular material is collected to the start end portion 22 a of the conveyance path 22. Therefore, since the granular material can reach the start end portion 22a of the conveying path 22 formed on the inner surface of the outer peripheral wall 21 more quickly, the granular material is not interrupted on the conveying path 22, and from the carry-out port 24. A certain amount of granular material can be reliably carried out.

  Further, the carrying-out port 24 is provided with a detection means 40 for detecting the presence or absence of the powder passing through the carry-out port 24. It is preferable that an informing means 50 for informing the passage is provided. As a result, when a problem such as a shortage of powder particles in the ball 20 or other troubles occurs and the powder particles do not pass through the carry-out port 24, this defect is immediately detected by the detection means 40. The operator can be notified by the notification means 50 that this has occurred. The detection means 40 is not particularly limited, and examples thereof include an infrared sensor. The informing means 50 is not particularly limited, and examples thereof include an informing means 50 such as a buzzer as shown in FIG. 1, a visually informing means 50 such as a warning light, and a combination thereof. .

  The vibration unit 30 is for vibrating the ball 20. The vibrating unit 30 is not particularly limited, and examples thereof include those using an electromagnetic vibrator or a piezoelectric vibrator.

  Next, a method for supplying a high specific gravity granular material to the next process using the vibrating granular material supply apparatus 10 of the present embodiment will be described with reference to FIGS.

  First, a high specific gravity granular material having a specific gravity of 2 or more is placed on the inner bottom portion 23 of the ball 20, and the ball 20 is vibrated by adjusting the vibration unit 30 to a predetermined amplitude. Thereby, the granular material gradually moves spirally to the outer periphery while rotating on the inner bottom 23 of the ball 20 in a predetermined direction. Due to the above movement of the granular material, the granular material that has reached the start end portion 22a of the conveying path 22 disposed on the inner bottom portion 23 of the ball 20 climbs sequentially along the conveying path 22 by vibration.

  As shown in FIG. 5, by forming the inner bottom portion 23 of the ball 20 so that the center 23 a swells inside the ball, the granular material is moved to the start end portion 22 a of the transport path 22 more quickly. be able to.

  Further, as shown in FIG. 4, by providing a granular material guide wall 27 between the center 23 a of the inner bottom 23 of the ball 20 and the inner peripheral edge of the starting end 22 a of the conveying path 22, However, the granular material can reach the start end portion 22a of the conveyance path 22 more quickly without rotating around the inner bottom portion 23 many times.

  Eventually, the granular material that has traveled through the conveyance path 22 by vibration and reached the carry-out port 24 is carried out from the carry-out port 24 through the carry-out route 25 to the next step.

  Here, since the granular material that is traveling along the conveyance path 22 has a large specific gravity, the granular material moves closer to the outer peripheral wall 21 side by vibration, and further on the granular material that is traveling along the outer peripheral wall 21. May be piled up. However, the carry-out port 24 has an opening height on the outer peripheral wall 21 of the ball 20 in the vicinity of the end portion 22b of the carry path 22 so that the opening height is substantially equal to the size of the granular material from the carry surface of the carry path 22. Is formed along the conveying surface, it is possible to pass only the lowest layer of the stacked granular material. Accordingly, as long as the granular material proceeds in a sufficient amount without being interrupted by the conveyance path 22, only a predetermined amount of granular material can be carried out from the carry-out port 24, so that the granular material is quantitatively supplied to the next process. can do.

  Further, excess powder particles that could not pass through the carry-out port 24 are transported from the drop portion 26 formed by gradually reducing the width of the end portion 22b of the transport path 22 to the inner bottom 23 of the ball 20 or the lower stage. Fall on the road 22. Since the fallen granular material advances again on the conveyance path 22 toward the carry-out port 24 by vibration, the vibration type granular material supply apparatus 10 can be automated.

  Further, a detection means 40 for detecting the presence or absence of the powder passing through the carry-out outlet 24 is provided at the carry-out outlet 24 of the transport path 22, and when the passage of the powder is not detected by the detection means 40, In the case where the notification means 50 for notifying the non-passage of the granular material is provided, there is a problem that the granular material does not pass through the carry-out port 24 due to the shortage of the granular material in the ball 20 or other troubles. When this occurs, this failure is immediately detected by the detection means 40, and the operator can be notified by the notification means 50 of the occurrence of the failure.

It is a perspective view which shows one Embodiment of the vibration type granular material supply apparatus in this invention. FIG. 2 is a perspective view of the vibrating powder supply apparatus shown in FIG. 1 when viewed from a different viewpoint from FIG. 1. It is a perspective view which shows other embodiment of the vibration type powder supply apparatus in this invention. FIG. 4 is a perspective view of the vibratory granular material supply device shown in FIG. 3 when viewed from a different viewpoint from FIG. 3. It is a fragmentary sectional view which shows the modification of the ball | bowl of the vibration type powder supply apparatus in this invention. It is a perspective view which shows the other modification of the ball | bowl of the vibration type powder supply apparatus in this invention. It is a partial top view which shows the conventional granular material supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vibrating granular material supply apparatus 20 Ball | bowl 21 Outer peripheral wall 22 Conveyance path 23 Inner bottom part 24 Unloading outlet 25 Control board 26 Falling part 27 Granular substance guide wall 30 Vibrating part 40 Detection means 50 Notification means

Claims (6)

A ball having a conveying path formed in a spiral shape therein and a vibrating part that vibrates the ball, and by vibrating the ball, powder particles put into the inner bottom of the ball are transferred to the conveying path. In the vibratory powder supply device, which is conveyed upward along and constantly supplies a certain amount of powder to the next process,
In the vicinity of the end portion of the conveyance path, a carry-out port having an opening height from the conveyance surface of the conveyance path that is substantially equal to the size of the granular material is formed on the outer peripheral wall of the ball along the conveyance surface. In addition, the vibratory granular material supply apparatus is characterized in that the end portion of the conveyance path is a dropping unit that drops excess granular material that has not passed through the carry-out port to a predetermined position in the ball.   The unloading port is configured by forming an opening portion on the outer peripheral wall of the ball along the transport path and providing a restriction plate in the opening portion so as to be movable up and down. 2. The vibratory granular material supply apparatus according to 1.   3. The vibrating powder supply apparatus according to claim 1, wherein the center of the inner bottom portion of the ball bulges inside the ball.   4. The powder body guide wall is provided at an inner bottom portion of the ball between a center thereof and an inner peripheral edge of a start end portion of the transport path. 5. The vibratory granular material supply apparatus described in 1.   5. The vibrating powder supply apparatus according to claim 1, wherein the vibration unit is capable of changing an amplitude of vibration. 6. A detection means for detecting the presence or absence of powder particles passing through the carry-out port is provided at the carry-out port of the conveyance path,
6. The vibrating powder according to any one of claims 1 to 5, further comprising a notification means for notifying passage of the powder when the passage of the powder is not detected by the detection means. Body supply device.

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