JP5993722B2 - Combination weighing device - Google Patents

Description

  The present invention relates to a combination weighing device.

  In the combination weighing device disclosed in Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2009-257975), nine troughs are arranged along the peripheral edge of the dispersion table. A maximum of 14 troughs can be arranged side by side at the peripheral portion, but of the 14 troughs, 5 troughs corresponding to the arc region that is a part of the circumference are cut out. The nine troughs are densely arranged in a region other than the arc region in the peripheral portion.

  As a result, even when a combination weighing device with a reduced number of troughs is required, it does not require changes to increase the trough width or reduce the diameter of the dispersion table in accordance with the reduced number, making it suitable for production volume. A reasonable combination weighing device can be provided.

  However, in the combination weighing device as described above, the article supply state to each trough of the article that is the object to be weighed tends to be excessive on the downstream side in the direction in which the article on the dispersion table turns. In such a state, articles are not evenly supplied to a plurality of troughs arranged along the peripheral edge of the dispersion table, and there is a possibility that the weighing accuracy is lowered.

  The subject of this invention is providing the combination weighing | measuring apparatus which can supply goods equally with respect to each trough from a dispersion | distribution table.

  A combination weighing device according to a first aspect of the present invention includes a dispersion table, an article supply device, a wall member, and a supply trough. The dispersion table has a circular shape in plan view, and discharges the article in the radial direction while turning the article in the circumferential direction. The article supply device is disposed at least above the peripheral edge of the dispersion table, and a discharge port for discharging the article faces the dispersion table. The wall member has an arc shape, and is attached to a first peripheral portion that overlaps with the article supply device in the peripheral portion of the dispersion table, and prevents discharge of the article from the first peripheral portion. The supply trough is arranged in a fan shape along the second peripheral edge portion excluding the first peripheral edge portion among the peripheral edge portions of the dispersion table. The discharge port of the article supply device faces a fan-shaped region formed by the center of the dispersion table and the first peripheral edge, and the discharge direction of the article discharged from the discharge port is a swivel of the article on the dispersion table. It is set along the turning direction.

  Since the circumferential force and the radial force act on the article moving on the dispersion table, the article moves toward the supply trough while turning on the dispersion table. Therefore, when the articles are randomly supplied, most of the arrival positions of the articles are concentrated on the supply troughs located in the downstream area in the turning direction, and the article is not supplied to the supply troughs located in the upstream area in the turning direction.

  However, in this combination weighing device, the discharge port of the article supply device faces the fan-shaped region formed by the center of the dispersion table and the first peripheral edge, and the discharge direction of the articles discharged from the discharge port is the dispersion table. Since the article is set so as to follow the turning direction of the article turning above, the article is evenly supplied from the upstream side to the downstream supply trough in the turning direction.

  In addition, that the discharge direction of an article is along the turning direction of the article means that the discharge direction of the article includes a direction component along the turning direction (or turning trajectory).

  A combination weighing device according to a second aspect of the present invention is the combination weighing device according to the first aspect, wherein the article supply device has an article conveyance surface located above the dispersion table. The article conveyance surface includes an inclined surface whose height decreases as the height approaches the discharge direction.

  Since the direction component along the turning direction is included in the discharge direction of the article, approaching the discharge direction means approaching the turning direction.

  This combination weighing device includes an inclined surface whose height decreases as the article conveyance surface approaches the discharge direction, and the article on the inclined surface is directed to a lower position by its own weight, and the article occupies the occupied width on the conveyance surface in the swiveling direction. It reaches the outlet while narrowing. That is, since the article reaches the discharge port with a directional component in the turning direction, the article is discharged along the turning direction of the article turning on the dispersion table.

  A combination weighing apparatus according to a third aspect of the present invention is the combination weighing apparatus according to the first aspect or the second aspect, in which the article supply apparatus turns the article in a direction opposite to the turning direction of the article on the dispersion table. While moving toward the distributed table.

  In this combination weighing device, the article supply device turns the article in the direction opposite to the turning direction on the dispersion table, so that the turning direction of the article already turned on the dispersion table immediately before being supplied onto the dispersion table. To come along.

  A combination weighing device according to a fourth aspect of the present invention is the combination weighing device according to the first aspect, and further includes a distribution device that distributes the articles to the article supply apparatus. The article supply apparatus has an article conveyance surface. The sorting apparatus has a regulating plate that directs an article on one side in a direction intersecting the article conveyance direction on the article conveyance surface.

  For example, when a small amount of article is supplied from the outlet, it is preferable that the article is discharged in a state closer to the article turning direction than the center of the outlet. This is because it is possible to prevent a situation in which an article turning downward is pushed in the anti-turning direction by an article falling from the discharge port and supplied to the trough on the downstream side.

  In this combination weighing device, from the beginning when the article is transferred from the sorting apparatus to the article supply apparatus, the restriction plate can bring the state closer to the article turning direction than the central portion of the discharge port.

  A combination weighing device according to a fifth aspect of the present invention is the combination weighing device according to any one of the first to fourth aspects, wherein the dispersion table has a conical surface. The peak part of the conical surface is eccentric with respect to the center of the dispersion table so that the peripheral part of the dispersion table positioned in the discharge direction is wider than the other peripheral parts.

  In this combination weighing device, since there are a large amount of articles on the supply side, the dispersion table is gently inclined to prevent excessive supply to the supply trough, and on the opposite side of the supply side, articles are small in quantity. This prevents the supply of troughs from being undersupplied.

  A combination weighing device according to a sixth aspect of the present invention is the combination weighing device according to any one of the first to fifth aspects, and the discharge port is formed in a shape along the peripheral edge of the dispersion table. .

  In this combination weighing apparatus, the discharge port of the article supply device faces a fan-shaped region formed by the center of the dispersion table and the first peripheral edge, and the discharge opening is formed in a shape along the peripheral edge of the distribution table. Therefore, since the articles discharged from the discharge port fall in a group of rows along the swirling trajectory of the articles swirling on the dispersion table, they join together without disturbing the trajectory of the articles already swiveling on the dispersion table. Thus, it is possible to prevent a situation in which the swiveling movement of the article is stagnated and the article is pushed out in the anti-turning direction. Therefore, articles are prevented from being supplied from the counter-turning direction to the supply trough located at the downstream end of the arranged supply trough group, and the supply trough located at the upstream end of the supply trough group is surely secured. Articles are supplied.

  A combination weighing device according to a seventh aspect of the present invention is the combination weighing device according to any one of the first to second aspects, wherein the combination weighing device is opposed to a dispersion table in a conveyance path that leads an article to a discharge port. The exit forming surface is cut away in the targeted discharge direction.

  In this combination weighing device, the article that has reached the discharge port falls from the notched portion (hereinafter referred to as “notch”), so that the flow of the subsequent articles gathers on the notch side due to the fall. Become. As described in the first aspect, since the target discharge direction is the direction along the turning direction of the article, the flow of the article concentrated on the [notch] cut out in that direction inevitably includes the turning direction. A directional component is included. As a result, the article comes along the turning direction of the article swirling on the dispersion table immediately before dropping on the dispersion table.

  A combination weighing device according to an eighth aspect of the present invention is a combination weighing device in which two combination weighing devices according to any one of the first to seventh aspects are combined, and the article supply devices are mutually connected. They are joined together so that they are back to back.

  This combination weighing device can save space more than installing two independent combination weighing devices individually.

  In the combination weighing device according to the present invention, the discharge port of the article supply device faces the fan-shaped region formed by the center of the dispersion table and the first peripheral edge, and the discharge direction of the articles discharged from the discharge port is dispersed. Since it is set along the turning direction of the article turning on the table, the article is evenly supplied from the upstream side to the downstream supply trough in the turning direction.

The top view of the combination weighing device concerning one embodiment of the present invention. FIG. 3 is a schematic diagram of a configuration of a head H. FIG. 3 is a perspective view of a combination weighing device with all heads H removed. The side view of an article distribution apparatus. The control block diagram of a combination weighing device. The perspective view of the article conveyance path of the combination weighing device concerning the 1st modification. The top view of the combination weighing | measuring apparatus which concerns on a 2nd modification. The top view of the combination weighing | measuring apparatus which concerns on a 3rd modification. The perspective view of the gate of the combination weighing device concerning the 3rd modification. The top view of the combination weighing | measuring apparatus which concerns on a 4th modification. Plan view of a combination weighing device according to a fifth modification

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

(1) Configuration of Combination Weighing Device 1 FIG. 1 is a plan view of a combination weighing device 1 according to an embodiment of the present invention. In FIG. 1, the combination weighing device 1 is an arrangement in which two devices are symmetrically arranged and integrated, and space can be saved as compared with the case where two independent combination weighing devices are individually installed. Hereinafter, the apparatus on the right side in the plan view of FIG. 1 will be described.

  The combination weighing device 1 includes a distribution table 2 disposed at the center of the right main body, a plurality of heads H disposed around the distribution table 2, and an article to be weighed (hereinafter referred to as “article M”). And an article distribution device 200 that distributes the articles M to the article supply section 150.

  In the combination weighing device 1 according to the present embodiment, the heads H <b> 1 to H <b> 9 are arranged counterclockwise along the circumference of the dispersion table 2. When the heads H are arranged along the entire circumference, a maximum of 14 heads H can be arranged. However, when 14 heads H are not always necessary in view of the supply capability, the surplus heads H are not arranged. . In the present embodiment, nine heads H are arranged, but the arrangement quantity may be determined as necessary.

  FIG. 2 is a schematic diagram of the configuration of the head H. Each head H has a trough 3, a pool hopper 4, a weighing hopper 5, and a booster hopper 6. The article M is conveyed to the upper part of the dispersion table 2 by the article supply unit 150 and dropped onto the dispersion table 2.

  The trough 3 supplies the article M to the pool hopper 4 arranged on the downstream side of the trough 3. The pool hopper 4 is provided with a gate 41. The pool hopper 4 temporarily stores the articles M supplied from the trough 3.

  A weighing hopper 5 is disposed below the gate 41. The weight of the article M put into the weighing hopper 5 from the pool hopper 4 is detected by the load cell 11. The weighing hopper 5 is provided with a gate 51. A booster hopper 6 is disposed below the gate 51. The booster hopper 6 is provided with a gate 61. A collective discharge chute 70 is disposed below the gate 61. The distance from the lower end of each booster hopper 6 to the discharge port 72 is equal.

(2) Detailed configuration (2-1) Distributed table 2
FIG. 3 is a perspective view of the combination weighing device 1 with all the heads H1 to H9 removed. In FIG. 3, the dispersion table 2 includes a conical portion 21 having a conical inclined surface having a high central portion and a low peripheral portion, and a disc portion 22 having a horizontal surface formed so as to surround the conical portion 21. ing.

  The center part of the lower surface of the disk part 22 is connected to the vibration part 26 (see FIG. 2). The vibration unit 26 is energized intermittently, thereby causing the disk unit 22 to generate fine reciprocating vibration along the circumferential direction. This vibration allows the article M to move radially outward while turning in one direction.

  A wall member 23 is attached to a part of the outer periphery of the disc portion 22 (hereinafter referred to as “first peripheral portion 22a”). By attaching a common support (not shown) to the back surface of the wall member 23 and the back surface of the disk portion 22, the wall member 23 and the disk portion 22 are fixed to each other. The wall member 23 is formed along the outer peripheral arc of the disc portion 22, and the end 23 a is bent outward to avoid catching the article M and damaging the article due to the collision. Has been made.

  By attaching the wall member 23 to the first peripheral edge portion 22 a of the disk portion 22, the first peripheral edge portion 22 a is defined as a non-discharge area where the article M is not discharged from the dispersion table 2. As shown in FIG. 1, the non-discharge area of the distribution table 2 coincides with the area where the head H is not arranged.

  In addition, in this embodiment, although the dispersion | distribution table 2 of the structure which has arrange | positioned the disc part 22 which has the horizontal surface formed so that the cone part 21 may be surrounded is employ | adopted, it is not limited to this, A horizontal surface is used. A conical dispersion table that does not have may be used.

(2-2) Trough 3
1 and 2, the trough 3 receives the article M supplied from the dispersion table 2, moves the received article M by vibration, and drops it onto the pool hopper 4 disposed downstream. The trough 3 supplies the article M to the pool hopper 4 belonging to the same head. The nine troughs 3 are arranged in an arc shape at equal intervals along the outer peripheral portion (hereinafter referred to as “second peripheral portion 22 b”, see FIG. 3) excluding the first peripheral portion 22 a of the dispersion table 2. Each trough 3 is vibrated by an electromagnetic vibration device (not shown).

(2-3) Pool hopper 4
The pool hopper 4 temporarily stores the articles M supplied from the trough 3. The pool hopper 4 is formed in a cylindrical shape having an inlet and an outlet. A gate 41 is provided at the discharge port of each pool hopper 4, and the discharge port of the pool hopper 4 is opened and closed by the gate 41. The gate 41 is opened and closed by a stepping motor 42, and the operation is controlled by the control unit 8. The pool hopper 4 opens the gate 41 and supplies the articles M to the weighing hoppers 5 belonging to the same head H.

(2-4) Weighing hopper 5
The weighing hopper 5 measures the weight of the article M supplied from the pool hopper 4 using the load cell 11. The weighing hopper 5 is disposed below the gate 41 of the pool hopper 4.

  The weighing hopper 5 has an inlet and an outlet. A gate 51 is provided at the discharge port of the weighing hopper 5, and the discharge port of the weighing hopper 5 is opened and closed by the gate 51. The gate 51 is opened and closed by a stepping motor 52, and the operation is controlled by the control unit 8. The weighing hopper 5 holds the article M when the gate 51 is closed, and supplies the article M to the booster hopper 6 when the gate 51 is open.

(2-5) Booster hopper 6
The booster hopper 6 is disposed below the gate 51 of the weighing hopper 5. The booster hopper 6 has an inlet and an outlet. A gate 61 is provided at the discharge port of the booster hopper 6, and the discharge port of the booster hopper 6 is opened and closed by the gate 61. The gate 61 is opened and closed by a stepping motor 62, and the operation is controlled by the control unit 8. The booster hopper 6 holds the article M with the gate 61 closed, and drops the article M onto the collective discharge chute 70 with the gate 61 open.

(2-6) Collective discharge chute 70
The collective discharge chute 70 is disposed below the booster hopper 6. The collective discharge chute 70 has an input port 71 and a discharge port 72. The collective discharge chute 70 collects the articles M dropped from the booster hopper 6, and then discharges the collected articles M toward the packaging device 90 disposed downstream.

(2-7) Article supply unit 150
In FIG. 3, the article supply unit 150 includes an article conveyance path 151 and a vibration unit 160 that applies vibrations to the article conveyance path 151 in the article conveyance direction. The article conveyance path 151 is a sheet metal member formed in a trough shape, and the upstream end is closed and the downstream end is open. A discharge port 152 for the article M is formed at the downstream end. The article conveyance path 151 is disposed so as to straddle the wall member 23, and the discharge port 152 is located on the sector area 24 formed by the center of the dispersion table 2 and the first peripheral edge 22 a. Further, the article conveyance path 151 is inclined toward the dispersion table 2, and the article M is conveyed in the direction of the distribution table 2 by the inclination and the fine reciprocation of the article conveyance path 151.

  The shape of the discharge port 152 in plan view is such that the downstream end of the article conveyance path 151 is cut out in an arc shape, and the arc is substantially concentric with the outer periphery of the dispersion table 2. Therefore, the discharge direction of the article M discharged from the discharge port 152 is along the turning trajectory of the article M turning on the dispersion table 2. A flange 153 is joined to the outside of the discharge port 152 so as to surround the discharge port 152. The flange 153 extends so as to be closer to the dispersion table 2 than the upper end of the wall member 23 in a side view.

  The vibration unit 160 is connected to the center of the lower surface of the article conveyance path 151. The vibration unit 160 is energized intermittently to generate reciprocating micro vibrations along the conveyance direction of the article M. This vibration causes the article M to travel in one direction.

(2-8) Article distribution apparatus 200
The article distribution apparatus 200 is an apparatus that distributes the articles M to the article supply unit 150. The article sorting apparatus 200 includes a gate 210 and a drive unit 220. The gate 210 includes a first gate member 211 and a second gate member 212.

  The first gate member 211 includes an inclined surface 211a that is inclined at a predetermined angle with respect to a horizontal plane, and side surfaces 211b that rise in the vertical direction from both ends in the width direction of the inclined surface 211a. The end on the lower end side of the inclined surface 211a among the ends of the side surface 211b is vertically cut off from the lower end of the inclined surface 211a.

  FIG. 4 is a side view of the article sorting apparatus 200. In FIG. 4, on the lower surface side of the inclined surface 211a, there is an attachment member 211c for attaching the first gate member 211 to the two shafts 221a, 221b of the four shafts 221a, 221b, 222a, 222b of the drive unit 220. It is fixed.

  The second gate member 212 has the same shape as the first gate member 211, and includes an inclined surface 212a that is inclined at a predetermined angle with respect to a horizontal plane, and side surfaces 212b that rise in the vertical direction from both ends in the width direction of the inclined surface 212a. It is configured. Of the ends of the side surface 212b, the end on the lower end side of the inclined surface 212a stands vertically from the lower end of the inclined surface 212a. A mounting member 212c for fixing the second gate member 212 to the two shafts 222a, 222b of the four shafts 221a, 221b, 222a, 222b of the drive unit 220 is fixed to the lower surface side of the inclined surface 212a. .

  The first gate member 211 and the second gate member 212 are articles in which the inclined surface 211a and the inclined surface 212a are V-shaped in a side view by abutting the lower end of the inclined surface 211a with the lower end of the inclined surface 212a. Contain the containment section.

  The driving unit 220 includes a first rotating plate 221c to which the shaft 221a and the shaft 221b are connected, a second rotating plate 222c to which the shaft 222a and the shaft 222b are connected, and a first motor that rotationally drives the first rotating plate 221c ( And a second motor (not shown) that rotationally drives the second rotating plate 222c.

  For example, by rotating the first rotating plate 221c counterclockwise, the first gate member 211 is rotated, and a large amount of articles M that are blocked are conveyed below the first gate member 211. It is distributed to the road 151.

  On the other hand, by rotating the second rotating plate 222c in the clockwise direction, the second gate member 212 is rotated, and a large amount of the articles M that have been blocked are located below the second gate member 212. 151.

(2-9) Control unit 8
FIG. 5 is a control block diagram of the combination weighing device 1. 5, the control unit 8 includes a CPU 81 and a memory 82, and includes a drive unit 220 of the article distribution device 200, an excitation unit 160 of the article supply unit 150, an excitation unit 26 of the distribution table 2, and a gate. 41, a stepping motor 42 for opening and closing, a stepping motor 52 for opening and closing a gate 51, a stepping motor 62 for opening and closing a gate 61, and a load cell 11 mounted on each weighing hopper 5.

  The measurement signal P <b> 11 is input from the load cell 11 to the control unit 8. Further, the control unit 8 opens and closes the drive signal P4 for opening and closing the gate 41 of the pool hopper 4 of each head H, the drive signal P5 for opening and closing the gate 51 of the weighing hopper 5, and the gate 61 of the booster hopper 6. Drive signal P6 is output.

(3) Schematic operation of combination weighing device 1 The article M to be weighed is distributed from the article distribution device 200 to the article conveyance path 151 of the article supply unit 150, and then moves along the article conveyance path 151 toward the distribution table 2. Proceeds and falls onto the fan-shaped region 24 of the dispersion table 2 from above the dispersion table 2. The article M is discharged toward the outer peripheral edge of the dispersion table 2 while being swung by the dispersion table 2, and is supplied to the inner ends of the troughs 3 of the heads H1 to H9. The trough 3 conveys the article M supplied from the dispersion table 2 from the inside to the outside by vibration. The article M discharged from the outer end of the trough 3 is supplied to the pool hopper 4 where it is temporarily stored.

  The article M discharged from the pool hopper 4 is supplied to the weighing hopper 5 where it is temporarily stored and its weight is measured by the load cell 11. The article M discharged from the weighing hopper 5 is supplied to the booster hopper 6 where it is temporarily stored. Of all the booster hoppers 6 (and the weighing hoppers 5) that store the articles M, a combination of hoppers that realizes a weight value that matches or is closest to the target weight is obtained by calculation, and one or more selected hopper combinations are obtained. Articles are discharged from the hopper. The articles M discharged from the booster hopper 6 are supplied into the collective discharge chute 70, collected, and discharged from the discharge port 72 of the collective discharge chute 70 toward the packaging device 90.

(4) Movement of the article M on the dispersion table 2 The dispersion table 2 reciprocates in the vertical direction in which the reciprocating vibration in the circumferential direction and the reciprocating vibration in the vertical direction are combined. The article M supplied to the fan-shaped region 24 advances in the radial direction while turning counterclockwise on the dispersion table 2, and reaches each of the heads H1 to H9. Note that the article M is not discharged from the distribution table 2 in the non-discharge region where the wall member 23 is formed.

(4-1) When a large amount of articles M is supplied to the dispersion table 2 A large amount of articles M referred to here means an amount that allows the conveyance surface of the article conveyance path 151 to be filled with the articles M. When a large amount of the article M is discharged from the discharge port 152, the article M moves so as to fill the entire fan-shaped region 24 with the momentum according to the amount, and then turns counterclockwise.

  At this time, among the articles M discharged from the discharge port 152, the articles M near the head H9 are prevented from advancing by the front articles M group, and a part of the articles M spills into the trough 3 of the head H9. However, since a large amount of articles M are supplied to all the heads, only the trough 3 of the head H9 does not become excessively supplied and is supplied equally to all the heads.

(4-2) When a medium amount of articles M is supplied to the dispersion table 2 The medium amount of articles M referred to here is that the conveyance surface of the article conveyance path 151 is filled with the articles M, but the bulk thereof is high. It means about half the amount compared to a large amount. When the medium-sized article M is discharged from the discharge port 152, the article M moves so as to fill the entire fan-shaped region 24 with the momentum according to the amount, and then turns counterclockwise. However, since the amount of the discharged article M is not so large that the front article M is prevented from proceeding, the article M that has fallen on the fan-shaped region 24 immediately proceeds in the radial direction while turning counterclockwise. The heads H1 to H9 are reached.

  Further, among the articles M that have fallen near the top of the fan-shaped region 24, there are those that slide down the inclined surface toward the head H9, but are pushed by the article M that has turned without entering the trough 3 of the upstream head H8. Therefore, it advances in the head H1 direction along the wall member 23 without entering the trough 3 of the head H9. Therefore, the articles M are evenly supplied to all the heads without excessive supply only to the downstream head H.

(4-3) When a small amount of articles M is supplied to the dispersion table 2 The small amount of articles M referred to here is not so large that the conveyance surface of the article conveyance path 151 is filled with the articles M, and the discharge port 152 It means the amount that is discharged to a part of. When a small amount of the article M is discharged from the discharge port 152, almost all the article M falls near the circular arc of the fan-shaped region 24, proceeds in the radial direction while turning counterclockwise, and reaches each of the heads H1 to H9. To do.

  Of the articles M that have traveled on the dispersion table 2 toward the head H9 while turning, the excess articles M that have not been supplied to the trough 3 of the head H9 travel along the wall member 23 in the direction of the head H1. .

  Patent Document 1 (Japanese Patent Laid-Open No. 2009-257975) cited in the above-mentioned background art describes as a moving path of an article, “curving due to turning while moving in the radial direction of the dispersion table 2 from the article input area. Article supply path P1 toward the trough 3 of the head H9, article supply path P2 toward the trough 3 of the head H9 along the circumferential direction of the dispersion table 2 from the upstream side in the turning direction, and the distribution table 2 from the article input area. From the region along the article supply path Q1 toward the trough 3 of the head H1 toward the trough 3 of the head H1 and the wall member 23 while turning in the radial direction of the head, toward the trough 3 of the head H1 along the circumferential direction of the dispersion table 2. In this embodiment, a path corresponding to the article supply path P1 disclosed in Patent Document 1 is generated. There.

  This is because, in the present embodiment, the discharge port 152 of the article supply unit 150 faces the fan-shaped region 24 formed by the center of the dispersion table 2 and the first peripheral edge 22a, and is discharged from the discharge port 152. This is because the discharge direction of M is set so as to follow the turning direction of the article M swirling on the dispersion table 2, so that the article M dropped on the fan-shaped region 24 is not given an opportunity to face the head H9.

  Therefore, the article M that travels in the radial direction while turning in the direction from the head H1 to the head H9 on the dispersion table 2 sequentially enters the troughs 3 of the head H1 to the head H9. The article M that has not been put joins the article M newly supplied to the sector area 24 and proceeds along the wall member 23.

  In particular, in the case of a small amount of articles M, the articles M discharged from the discharge ports 152 fall in a group of rows along the turning trajectory of the articles M turning on the dispersion table 2. It is possible to prevent a situation in which the trajectories of the articles M that have already been swung are joined without disturbing the trajectory, the swiveling of the articles M is stopped, and the articles M are pushed out in the anti-turning direction. Therefore, the articles M are prevented from being supplied from the counter-turning direction to the troughs 3 positioned at the downstream end in the turning direction of the arranged troughs 3 group.

  Therefore, in the combination weighing device according to the present embodiment, the phenomenon that “the article M is excessively supplied to the trough 3 of the head H1 and the article M is excessively supplied to the trough 3 of the head H9” is prevented. .

(5) Features In the combination weighing device 1, the discharge direction of the article M discharged from the discharge port 152 is set so as to follow the turning direction of the article M turning on the dispersion table 2. Therefore, the article M that travels in the radial direction while turning in the direction from the head H1 to the head H9 on the dispersion table 2 sequentially enters the troughs 3 of the head H1 to the head H9. The article M that has not been put joins the article M newly supplied to the sector area 24 and proceeds along the wall member 23.

(6) Modified Examples (6-1) First Modified Example FIG. 6 is a perspective view of the article conveyance path 151 of the combination weighing device 1 according to the first modified example. In FIG. 6, the conveyance surface of the article conveyance path 151 is deepest at a certain distance D in the turning direction CCW (counterclockwise direction) than the center CL in the width direction (hereinafter referred to as “deepest part VB”). ).

  The article M entering the article transport path 151 proceeds to the discharge port 152 and travels to the deepest portion VB by its own weight. The article M on the article conveyance path 151 reaches the discharge port 152 while narrowing the occupation width on the conveyance surface in the turning direction.

  That is, since the article M reaches the discharge port 152 with a direction component in the turning direction, the article M is discharged along the turning direction of the article M that turns on the dispersion table 2.

(6-2) Second Modification FIG. 7 is a plan view of the combination weighing device 1 according to a second modification. In FIG. 7, in the article supply unit 150, a vibration unit (not shown) is replaced with the same as the vibration unit 26 of the dispersion table 2. The article M on the article conveyance path 151 turns to the discharge port 152 while turning, but the turning direction of the article M on the article conveyance path 151 is set to be opposite to the turning direction of the article M on the dispersion table 2. ing.

  Therefore, as indicated by the two white arrows in FIG. 7, the article M comes along the turning direction of the article that has already swung on the dispersion table 2 immediately before being supplied onto the dispersion table 2.

(6-3) Third Modification FIG. 8 is a plan view of the combination weighing device 1 according to a third modification. FIG. 9 is a perspective view of the gate 210. 8 and 9, a regulating plate 215 is attached on the inclined surfaces 211 a and 212 a of the gate 210.

  The restriction plate 215 is inclined so as to direct the article to one side in the direction intersecting the conveyance direction of the article M. That is, the regulation plate 215 is inclined with respect to the width direction.

  For example, when a small amount of the article M is supplied from the discharge port 152, the article M is preferably discharged in a state of being closer to the product turning direction side than the central portion of the discharge port 152. This is because it is possible to prevent the article M swiveling downward from being pushed in the anti-turning direction by the article falling from the discharge port 152 and supplied to the trough 3 on the downstream side.

  In the combination weighing apparatus 1 according to the third modification, the article M is moved from the center of the discharge port 152 by the regulating plate 215 from the beginning when the article M is transferred from the article sorting apparatus 200 to the article supply unit 150. It can be in a state close to the side.

(6-4) Fourth Modification FIG. 10 is a plan view of the combination weighing device 1 according to a fourth modification. In FIG. 10, the discharge port 152 is provided with a notch 152a. The notch 152a is formed by notching the forming surface of the discharge port 152 facing the dispersion table 2 in the article transport path 151 from the center in the width direction toward the turning direction of the article M.

  Since the article M that has reached the discharge port 152 of the article conveyance path 151 falls from the notch 152a, the flow of the subsequent article M is gathered on the notch 152a side due to the fall, so that the article M is discharged. The direction includes a direction component of the turning direction. As a result, immediately before the article M falls on the dispersion table 2, the article M follows the turning direction of the article M turning on the dispersion table 2.

(6-5) Fifth Modification FIG. 11 is a plan view of the combination weighing device 1 according to the fifth modification. In FIG. 11, the conical portion 21 is attached on the disc portion 22 with its center decentered toward the head H in the downstream region with respect to the center S of the disc portion 22.

  As a result, in the upstream region of the dispersion table 2 (in the vicinity of the heads H1 to H3), a region (hereinafter referred to as a “wide region”) in which the gap between the periphery of the disc portion 22 and the periphery of the cone portion 21 is wide is generated. In the downstream area of the table 2 (in the vicinity of the heads H7 to H9), an area where the distance between the peripheral edge of the disc portion 22 and the peripheral edge of the conical portion 21 is narrow (hereinafter referred to as “narrow area”) is generated.

  By setting the wide area as the upstream in the article traveling direction and the narrow area as the downstream, discharge of articles from the peripheral edge of the disk portion 22 is suppressed in the upstream area, and is suppressed in the downstream area. be able to.

  That is, it is possible to avoid a situation in which the supply amount of articles from the dispersion table 2 to each head H is excessive in the head H in the upstream area and excessive in the head H in the downstream area. The supply amount can be made uniform.

  As described above, the present invention is useful for an oval type combination weighing device.

DESCRIPTION OF SYMBOLS 1 Combination measuring device 2 Dispersing table 3 Supply trough 21 Conical part 22 Disk part 22a 1st peripheral part 22b 2nd peripheral part 23 Wall member 24 Fan area 150 Article supply part 151 Article conveyance path 152 Outlet 200 Article distribution apparatus 215 Regulatory plate

JP 2009-257975 A

Claims (8)

A circular dispersive table in plan view that discharges the article in the radial direction while turning the article in the circumferential direction;
An article supply device that is disposed at least above a peripheral edge of the dispersion table, and an outlet for discharging the article faces the dispersion table;
An arcuate wall member that is attached to a first peripheral edge that overlaps with the article supply device in the peripheral edge of the dispersion table, and that prevents discharge of the article from the first peripheral edge;
A plurality of supply troughs arranged in a fan shape along a second peripheral edge excluding the first peripheral edge of the peripheral edge of the dispersion table;
With
The discharge port of the article supply device faces a fan-shaped region formed by the center of the dispersion table and the first peripheral edge, and the discharge direction of the articles discharged from the discharge port is the dispersion Set along the turning direction of the article turning on the table,
Combination weighing device. The article supply apparatus has an article transport surface located above the dispersion table,
The article conveyance surface includes an inclined surface whose height decreases as the height approaches the discharge direction.
The combination weighing device according to claim 1. The article supply device moves the article toward the dispersion table while turning the article in a direction opposite to the turning direction of the article on the dispersion table.
The combination weighing device according to claim 1 or 2. A distribution device that distributes the articles to the article supply device;
The article supply apparatus has an article conveyance surface,
The sorting device has a regulating plate that directs the article on one side in a direction that intersects the conveyance direction of the article on the article conveyance surface.
The combination weighing device according to claim 1. The dispersion table has a conical surface;
The peak portion of the conical surface is decentered with respect to the center of the dispersion table so that the peripheral edge of the dispersion table located in the discharge direction is wider than the other peripheral edge.
The combination weighing device according to any one of claims 1 to 4. The discharge port is formed in a shape along the peripheral edge of the dispersion table,
The combination weighing device according to any one of claims 1 to 5. The discharge port forming surface facing the dispersion table in the conveyance path that guides the article to the discharge port is cut away in a target discharge direction.
The combination weighing device according to any one of claims 1 to 6. The two combination weighing devices according to any one of claims 1 to 7 are integrally coupled so that the article supply devices are back to back with each other.
Combination weighing device.

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