JP5285478B2 - Combination weighing device - Google Patents

Description

  The present invention relates to a combination weighing device that is disposed between a weighing hopper and a discharge port of a collecting chute and includes an annular shutter that temporarily stores articles.

  Conventionally, combination weighing has been publicly known. For example, in the following Patent Document 1, a weighing hopper for weighing an article, a collecting chute provided at a lower portion of the weighing hopper, and an outlet between the weighing hopper and the collecting chute, A combination weighing device having an annular shutter for temporary storage is disclosed. According to this combination weighing apparatus, (1) the function of the conventional combination weighing is not impaired, (2) the function of the product slippage in the next stage process from the collective chute is not impaired, (3) the combination weighing timing The effect of clearing the product slipping category for each product, preventing damage to the product, etc., and ensuring that connection between the combination weighing and the next packaging process is performed at each combination weighing timing. Can be obtained.

Japanese Utility Model Publication No. 64-40031

  However, in recent years, compared with the combination weighing device described in Patent Document 1, there is a demand for a device that can shift the article after weighing to the next process.

  Therefore, an object of the present invention is to obtain a combination weighing device in which the shift of the article after weighing to the next process is faster than the conventional device.

(1) The present invention is disposed between a weighing hopper for weighing an article, a collecting chute provided at a lower portion of the weighing hopper, and a discharge port of the weighing hopper and the collecting chute to temporarily move the article. A combination weighing device having an annular shutter stored therein, wherein the annular shutter has at least an outer cylinder movable in a substantially vertical direction and an inner cylinder movable in a substantially vertical direction inside the outer cylinder. It has a double cylinder structure. Further, the outer cylinder and the inner cylinder move alternately.

According to the configuration of (1) above, the outer cylinder and the inner cylinder are alternately moved in a substantially vertical direction, and articles are temporarily placed at each combination weighing timing alternately on the outer wall of the outer cylinder and the inner cylinder. Therefore, it is possible to provide a combination weighing device that speeds up the transition of the article after weighing to the next process as compared with the conventional device.

  (2) In the combination weighing device according to (1), the storage position of the article by the inner cylinder and the inside of the collecting chute is close to the storage position of the article by the outer cylinder and the inside of the collecting chute. It is preferable.

  According to the configuration of the above (2), it is possible to provide a combination weighing device that speeds up the shift of the article after weighing to the next process as compared with the conventional device. Further, since the storage position of the article in the cylinder 6a and the inner cylinder 6b can be made substantially the same, the influence on the article when the article is stored in the outer cylinder, and the article when the article is stored in the inner cylinder There can be almost no difference from the influence of. As a result, it is possible to carry out the process of shifting the article after weighing to the next process stably at each timing of combination weighing.

  (3) In the combination weighing device according to (1) or (2), it is preferable that the outer cylinder and the inner cylinder are movable in opposite directions so as to balance the weight with each other.

  According to the configuration of (3) above, the outer cylinder and the inner cylinder can balance the weight with each other, so that vibration during the movement of the outer cylinder and the inner cylinder is minimized. It is possible to provide a combination weighing device that can be suppressed.

  (4) In the combination weighing device according to the above (1) to (3), the weights of the respective cylinders are substantially the same, and one of all the cylinders descends to store the article together with the inside of the collecting chute. It is preferable that the cylinders other than the descending cylinder out of all the cylinders rise and stand by.

  According to the configuration of (4) above, the following effects are obtained. In other words, in the past, the next article had to be stored in the time when the cylinder was raised and lowered, but in this configuration, the next article can be stored only in the fall time of the cylinder waiting at the top. Therefore, the speed can be further increased. When the configuration of (4) is used for the combination weighing device of (3), one cylinder is waiting on the upper side, and the storage positions of the articles in the inner cylinder and the outer cylinder are close to each other. Therefore, the energy required for moving each cylinder in an actuator such as a motor can be used as the energy required for exchanging both cylinders (potential energy). It can be minimized and can be speeded up.

  (5) In the combination weighing device according to the above (1) to (4), a motor having a rotation shaft and supported by a support member so as to be adjacent to the outer cylinder and the inner cylinder, and the support When at least one fixed shaft provided on the member and the motor is operated, the outer cylinder and the inner cylinder are moved in opposite directions, and the outer cylinder and the inner cylinder are moved with respect to the rotation axis. A balance mechanism having members that connect the outer cylinder and the rotary shaft, the inner cylinder and the rotary shaft, the outer cylinder and the fixed shaft, and the inner cylinder and the fixed shaft, respectively, so as to balance the weight. Are preferably provided.

  According to the structure of said (5), the combination weighing | measuring apparatus which can suppress reliably the vibration in the middle of the said outer cylinder and the said inner cylinder moving can be provided reliably.

  (6) The combination weighing device according to (1) to (5) includes a sorting hopper provided downstream of the discharge port of the collecting chute and a plurality of timing hoppers provided downstream of the sorting hopper. It is preferable that each of the plurality of timing hoppers can discharge articles toward a single downstream discharge position.

  According to the configuration of (6) above, by sorting the articles or group of articles in the sorting hopper, temporarily storing the articles or group of articles in each timing hopper, and shifting the discharge timing of each timing hopper, It is possible to provide a combination weighing device that can discharge articles or groups of articles to a single downstream discharge position.

1 is a schematic configuration diagram illustrating a combination weighing device according to an embodiment of the present invention. It is the figure which showed schematic structure of the outer cylinder and inner cylinder periphery in the combination weighing | measuring apparatus shown in FIG. It is the perspective view which showed schematic structure of the balance mechanism in the combination weighing | measuring apparatus shown in FIG. It is a front view of the balance mechanism shown in FIG. FIG. 3 is a view showing a state where the outer cylinder moves downward and the inner cylinder moves upward from the state shown in FIG. It is the figure which showed the state which the outer cylinder moved further downward from the state shown in FIG. 5, and the inner cylinder further moved upward.

  Hereinafter, a combination weighing device according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the combination weighing device 100 corresponds to each of the distribution table 1, the plurality of feeders 2 provided radially downstream of the distribution table 1, and the plurality of feeders 2. A plurality of pool hoppers 3, a plurality of weighing hoppers 4 corresponding to the plurality of pool hoppers 3 for weighing articles, a collecting chute 5 provided at the lower part of the weighing hopper 4, an outer cylinder 6 a, An annular shutter 6 having an inner cylinder 6b, a motor 7 for operating the annular shutter 6, a balance mechanism 8 for balancing the weight of the outer cylinder 6a and the inner cylinder 6b when movable, and an article for sorting and discharging A plurality of ties that temporarily store the sorting hopper 9 and the articles or group of articles sorted by the sorting hopper 9 and discharge them to the packaging apparatus 20 that is a single downstream discharge position at a predetermined timing. And Nguhoppa 10, and a body 11 supporting the pool hoppers 3 and the weighing hoppers 4.

  The annular shutter 6 has a double cylinder structure having an outer cylinder 6a movable in a substantially vertical direction and an inner cylinder 6b movable in a substantially vertical direction inside the outer cylinder 6a, and the outer cylinder 6a and the inner cylinder 6b. Can move up and down while balancing the weight alternately. Further, in the outer cylinder 6a and the inner cylinder 6b, the storage position of the article by the inner cylinder 6b and the inner side of the collecting chute 5 and the storage position of the article by the outer cylinder 6a and the inner side of the collecting chute 5 are arranged close to each other. Has been.

  The motor 7 is fixed inside a box-shaped support member 12 provided at the lower part of the main body 11 and is annularly connected via a balance mechanism 8 connected to a rotating shaft 7a (see FIGS. 3 and 4). The shutter 6 (the outer cylinder 6a and the inner cylinder 6b) can be moved. The support member 12 has a protrusion 12a.

  As shown in FIG. 3, the balance mechanism 8 includes a pair of connection members 31, 31 (one is not shown), a pair of connection members 32, 32 (one is not shown), a pair of connection members 33, 33, a pair of connecting members 34, 34 (one is not shown), a pair of crank mechanisms having a pair of connecting members 35, 35, and a pair of connecting members 36, 36 (one is not shown) A pair of connecting members 37, 37 (one not shown), a pair of connecting members 38, 38, a pair of connecting members 39, 39, and a pair of connecting members 40, 40 The connection member 41 connecting the mechanism, one end of the connection members 32 and 32, one end of the connection members 37 and 37, and one end of the two sets of connection members 32 and 37, and the connection member 33 33, between one end portions of the connection members 38, 38, and two sets of contacts. A connecting member 42 connecting between one end of the member 33 and 38, but has a. Hereinafter, each connection member will be described in detail with reference to the drawings. In addition, although the same member as each member shown in FIG. 3 is symmetrically provided on the opposite side (the back side of the paper in FIG. 3) with the support member 12 as the center, description of these members will be omitted. There is.

  As shown in FIGS. 2 to 4, the connecting member 31 has a substantially central portion fixed to the rotating shaft 7 a of the motor 7 and is rotated according to the rotating motion of the rotating shaft 7 a. The other end of each of the connection members 32 and 33 is connected to one end of the connection member 31 via a bolt 51, and the connection members 32 and 33 can be rotated about the bolt 51 as an axis. ing. One end portion of the connection member 34 is connected to a substantially central portion of the connection member 32 via a bolt 52, and the connection member 34 can be rotated about the bolt 52 as an axis. One end of the connection member 35 is connected to a substantially central portion of the connection member 33 via a bolt 53, and the connection member 35 can be rotated about the bolt 53 as an axis. Further, the other end of the connection member 34 and the other end of the connection member 35 are connected via a bolt 54, and the connection member 34 and the connection member 35 can rotate about the bolt 54. ing. The bolt 54 is screwed to the support member 12.

  The connecting member 36 is supported at its substantially central portion by the support member 12 via a bolt 55 so as to be rotatable. The other end of each of the connection members 37 and 38 is connected to one end of the connection member 36 via a bolt 56, and the connection members 37 and 38 can rotate about the bolt 56 as an axis. ing. One end of a connection member 39 is connected to a substantially central portion of the connection member 37 via a bolt 57, and the connection member 39 can be rotated about the bolt 57 as an axis. One end of the connection member 40 is connected to a substantially central portion of the connection member 38 via a bolt 58, and the connection member 40 can be rotated around the bolt 58 as an axis. Further, the other end of the connection member 39 and the other end of the connection member 40 are connected via a bolt 59, and the connection member 39 and the connection member 40 can be rotated around the bolt 59. ing. The bolt 59 is screwed to the protrusion 12 a of the support member 12.

  2 and 3, the connection member 41 has one end connected to the other end of the connection member 32 via a bolt 60 and the other end connected to the connection member 37 via a bolt 61. The plate portions 41a and 41a connected to the other end of the plate, the plate portion 41b that fixes and supports the plate portions 41a and 41a on the side surface side of the support member 12, and the plate portions 41a and 41a are fixedly supported. The flange portion 41c is connected and fixed to the upper end portion of the plate portion 41b. The connecting member 41 can be rotated about the bolts 60 and 61 and can be linearly or approximately linearly moved in the vertical direction.

  As shown in FIGS. 2 and 3, the connecting member 42 has one end connected to the other end of the connecting member 33 via a bolt 62 and the other end connected to a connecting member 38 via a bolt 63. The plate portions 42a and 42a connected to the other end of the plate, the plate portion 42b that fixes and supports the plate portions 42a and 42a on the side surface side of the support member 12, and the plate portions 42a and 42a are fixedly supported. The plate portion 42c is connected and fixed to the lower end portion of the plate portion 42b. The connecting member 42 can be rotated about the bolts 60 and 61 and can be linearly moved or approximated linearly in the vertical direction.

  As shown in FIG. 4, a ring-shaped connecting member 71 (a substantially central portion is shown in a cross-sectional view in FIG. 4) is fixed to the upper end portion of the inner wall of the outer cylinder 6a. Further, the lower end portion of a substantially semi-cylindrical connection member 72 (a substantially central portion is shown in a sectional view in FIG. 4) is fixedly connected to the upper end portion of the connection member 71. Has been. Further, since the lower surface of the plate portion 72 a in the connection member 72 is connected and fixed to the upper surface of the flange portion 41 c of the connection member 41, the connection member 72 is configured to move up and down in accordance with the operation of the connection member 41. ing.

  As shown in FIG. 4, a ring-shaped connecting member 73 (a substantially central portion is shown in a sectional view in FIG. 4) is fixed to the upper end of the inner wall of the inner cylinder 6b. A connection member 74 that is connected and fixed to the plate portion 42c (see FIG. 2) of the connection member 42 is fixed inside the connection member 73.

  As shown in FIG. 1, the sorting hopper 9 includes a cylindrical portion 9 a provided downstream of the discharge port of the collective chute 5, a pair of rotational driving portions 9 b provided downstream of the cylindrical portion 9 a, and a rotational driving portion. And a pair of shutter portions 9c fixed to 9b. The rotation drive unit 9b is rotated by a motor drive or the like, and can open and close each of the pair of shutter units 9c. The sorting hopper 9 can appropriately sort the articles or group of articles discharged from the collective chute 5 into one of the two timing hoppers 10 at a predetermined timing. The timing hopper 10 is appropriately opened at a time and supplies an article or group of articles to the packaging device 20.

  The packaging device 20 is a well-known vertical pillow type packaging machine, and a belt-shaped packaging material (not shown) is formed in a cylindrical shape around a tube 23 extending vertically by a former 22 and dragged downward by pull-down belts 24 and 24. At the same time, the vertical sealing device 25 can perform vertical sealing, and the horizontal sealing device 26 can perform horizontal sealing to form a bag. Then, the seasoned article or article group dropped and discharged from the combination weighing device 100 is taken in between the horizontal seal and the horizontal seal via the chute 21 and the tube 23, that is, filled into a bag to complete the product. .

  Next, the operation of the combination weighing device 100 will be described. As shown in FIG. 1, the combination weighing device 100 uses a plurality of feeders 2 to transfer a large amount of articles supplied on a distribution table 1 by a supply device such as a belt conveyor or a bucket conveyor (not shown). After being distributed and supplied to a plurality of pool hoppers 3 corresponding to the respective pool hoppers 3, the respective weights are measured by the plurality of weighing hoppers 4 corresponding to the plurality of pool hoppers 3. Then, each weighing value is combined and calculated, and an article or group of articles is discharged from the plurality of weighing hoppers 4 corresponding to the optimum combination to the collecting chute 5.

  After the discharge, when the annular shutter 6 in the combination weighing device 100 is in the state of FIG. 4 (the inner cylinder 6b is located on the outlet side of the collecting chute 5 and the outer cylinder 6a is located on the inlet side of the collecting chute 5) The article or article group measured on the outer wall of the inner cylinder 6b is temporarily stored. Subsequently, the rotating shaft 7a is rotated by the motor 7 and the connecting member 31 is rotated to the position shown in FIG. 5 so that the connecting members 32 to 42 that are rotatably connected to each bolt are shown in FIG. The inner cylinder 6b is lifted upward to open the annular shutter 6, and the stored article or group of articles is dropped to the discharge port of the collecting chute 5. At this time, the outer cylinder 6a is lowered to almost the same height as the inner cylinder 6b. Subsequently, the rotating shaft 7a is further rotated by the motor 7 and the connecting member 31 is rotated (not shown in FIG. 6), so that the connecting members 32 to 42 that are rotatably connected by the respective bolts are illustrated. 6 is moved to the position shown in FIG. 6, and the outer cylinder 6 a is lowered downward so that the article or group of articles can be stored. And after storing articles | goods with the outer cylinder 6a, it rotates by rotating the rotating shaft 7a in the reverse direction with the motor 7, and it opens by returning to the state as shown in FIG. Drop to the outlet of the collecting chute 5.

  Subsequently, the articles or group of articles discharged from the discharge port of the collective chute 5 are appropriately distributed to any one of the timing hoppers 10 by the sorting hopper 9. Then, the timing hopper 10 opens at the appropriate time and supplies the article or group of articles to the downstream packaging device 20.

  The articles or group of articles dropped and discharged from the combination weighing device 100 in this way are filled between the horizontal seals and the horizontal seals, that is, into the bags via the take-in chute 21 and the tube 23 in the packaging device 20. To complete the product.

  According to the present embodiment, the outer cylinder 6a and the inner cylinder 6b are moved in a substantially vertical direction, and articles are temporarily stored alternately at each combination weighing timing on the outer walls of the outer cylinder 6a and the inner cylinder 6b. Therefore, (1) The function of the conventional combination weighing is not impaired at all, (2) The function of the article slipping in the next stage process from the collective chute 5 is not impaired, (3) Every combination weighing timing (4) Make sure that the item slip-off category is clear, that damage to the product does not occur, and that the combination weighing and the subsequent packaging process are connected at each combination weighing timing. It is possible to provide the combination weighing device 100 that has an effect of speeding up the transfer of the article after weighing to the next process as compared with the conventional device.

  Further, since the storage position of the article by the inner cylinder 6b and the inner side of the collecting chute 5 and the storage position of the article by the outer cylinder 6a and the inner side of the collecting chute 5 are close to each other, transition to the next process of the article after weighing is performed. It is possible to provide the combination weighing device 100 that is faster than the conventional device. Further, since the storage position of the article in the outer cylinder 6a and the inner cylinder 6b can be made substantially the same, the influence on the article when the article is stored in the outer cylinder 6a and the article when the article is stored in the inner cylinder 6b. There can be almost no difference from the impact on As a result, it is possible to carry out the process of shifting the article after weighing to the next process stably at each timing of combination weighing.

  In addition, the outer cylinder 6a and the inner cylinder 6b can be moved in opposite directions so as to balance the weight by a crank mechanism or the like that is a combination of the bolts and the connecting members as appropriate. Therefore, it is possible to provide the combination weighing device 100 that can suppress the vibration during the movement of the outer cylinder 6a and the inner cylinder 6b to the minimum.

  The combination weighing device 100 includes a sorting hopper 9 and two timing hoppers 10 provided downstream of the sorting hopper 9, and each of the two timing hoppers 10 has a single downstream discharge position ( The article can be discharged to the packaging device 20). As a result, the sorting hopper 9 sorts the articles or groups of articles, stores the articles or group of articles temporarily in the timing hoppers 10, and shifts the discharge timing of the timing hoppers 10 to shift the downstream unit. It is possible to provide the combination weighing device 100 capable of discharging each article or group of articles to one discharge position.

<Modification>
The present invention can be changed in design without departing from the scope of the claims, and is not limited to the above embodiment. For example, in the above embodiment, the outer cylinder 6a and the inner cylinder 6b are illustrated so as to be in contact with the inside of the collective chute 5, but are not necessarily in contact with each other. If it can be stored, there may be a gap.

  Moreover, in the said embodiment, although it is preferable that the outer cylinder 6a and the inner cylinder 6b are provided in the concentric shaft, if the outer cylinder 6a and the inner cylinder 6b can operate | move, balancing the weight, It does not necessarily have to be provided on the concentric shaft.

  In addition, the annular shutter 6 in the above embodiment has a double cylinder structure of an outer cylinder 6a and an inner cylinder 6b, but has a cylinder structure of three or more cylinders, and each cylinder alternately stores articles or groups of articles after weighing. You may be able to do that.

  In the above embodiment, the sorting hopper 9 distributes the weighed article or group of articles to the two timing hoppers 10, but instead of these configurations, three or more timing hoppers are provided. A sorting hopper that can be distributed to each of these timing hoppers may be used.

DESCRIPTION OF SYMBOLS 1 Dispersing table 2 Feeder 3 Pool hopper 4 Weighing hopper 5 Collecting chute 6 Annular shutter 6a Outer cylinder 6b Inner cylinder 7 Motor 7a Rotating shaft 8 Balance mechanism 9 Sorting hopper 9a Tube part 9b Rotation drive part 9c Shutter part 10 Timing hopper 11 Main body DESCRIPTION OF SYMBOLS 12 Support member 12a Protrusion part 20 Packaging apparatus 21 Taking chute 22 Former 23 Tube 24 Pull-down belt 25 Vertical seal apparatus 26 Horizontal seal apparatus 31,32,33,34,35,36,37,38,39,40,41, 42, 71, 72, 73, 74 Connection member 41a, 41b, 42a, 42b, 42c, 72a Plate part 41c Flange part 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62 63 Bolt 100 Weighing device

Claims (6)

A weighing hopper for weighing articles; a collecting chute provided at a lower portion of the weighing hopper; and an annular shutter disposed between the weighing hopper and the collecting chute discharge port for temporarily storing articles. A combination weighing device comprising:
Said annular shutter, an outer cylinder movable in a substantially vertical direction, all SANYO least double cylindrical structure inside having a cylinder that moves in a substantially vertical direction inside of the outer cylinder,
The outer cylinder and the inner cylinder move alternately.
Combination weighing device. The storage position of the article by the inner cylinder and the inner side of the collecting chute is close to the storage position of the article by the outer cylinder and the inner side of the collecting chute ,
The combination weighing device according to claim 1. The outer cylinder and the inner cylinder are movable in opposite directions so as to balance the weight with each other ,
The combination weighing device according to claim 1 or 2. The weight of each of the cylinders is substantially the same,
When one of all the cylinders descends and stores the article together with the inside of the collecting chute, all the cylinders other than the descending cylinder rise and stand by. It is characterized by being ,
The combination weighing device according to any one of claims 1 to 3. A motor having a rotating shaft and supported by a support member so as to be adjacent to the outer cylinder and the inner cylinder;
At least one fixed shaft provided on the support member;
When the motor is operated, the outer cylinder and the inner cylinder can be moved in opposite directions, and the outer cylinder and the inner cylinder can be balanced with respect to the rotation shaft. A balance mechanism having members that connect the rotating shaft, the inner tube and the rotating shaft, the outer tube and the fixed shaft, and the inner tube and the fixed shaft, respectively.
It is characterized by having ,
The combination weighing device according to any one of claims 1 to 4. A sorting hopper provided downstream of the discharge port of the collecting chute;
A plurality of timing hoppers provided downstream of the distribution hopper ;
With
Each of the plurality of timing hoppers is capable of discharging articles toward a single downstream discharge position ,
The combination weighing device according to any one of claims 1 to 5.