JP5271348B2 - Packaging bag counting and accumulating device - Google Patents

Description

  The present invention relates to a counting and accumulating device for packaging bags equipped in a filling and packaging machine.

  A stick-type packaging bag is manufactured by a vertical multi-row automatic filling and packaging machine (see Patent Document 1). In this wrapping machine, a raw fabric wrapping film is cut by a slitter by a predetermined width, each cut wrapping film is wound in the width direction, and a cylindrical body is formed by applying a vertical seal to the overlapping end. After a horizontal seal is applied at a predetermined position, a semi-wrapping bag is formed by filling the contents of powder, granules, etc., and the semi-wrapping bag is sent out one cycle at a time, and then a stick type is applied. The packaging bag is formed, and the transverse seal portion is cut to produce one packaging bag.

  Here, the following is known as an example of a counting and accumulating device for stick-type packaging bags manufactured by this type of vertical multi-row automatic filling and packaging machine. This is done by sliding the packaging bags manufactured in each column along the chute, receiving them once with the double-spreading bottom plate provided in the storage chamber, and then opening the bottom plate and using the finger conveyor arranged below it. While receiving, it conveys one horizontal row. The transport destination is equipped with a star wheel that is intermittently rotated with a plurality of partitioned receiving portions, and the number of packaging bags dropped at the transport destination is counted by a transmission photoelectric sensor, At that point, the star wheel is rotated and separated.

JP 2006-27683 A

In the above conventional counting and accumulating apparatus, the number of packages is counted by the transmission type photoelectric sensor while the packaging bags are sequentially dropped at the transport destination, so that the packaging bags for the horizontal row received from the storage chamber are kept to some extent. There is a problem in that it is necessary to transport it to a position where the photoelectric sensor is provided by a large transport conveyor such as a finger conveyor, which requires a lot of space.
The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a packaging and counting apparatus for packaging bags that realizes space saving.

The present invention is a packaging bag counting and accumulating apparatus attached to a packaging machine that simultaneously manufactures a plurality of rows of stick-type packaging bags and supplies them intermittently, and has a bottom that can be opened and closed. Storage chambers in the same row that store the packaging bags supplied from each row, a bottom opening / closing mechanism that opens any number of the bottom portions of the storage chambers to drop the packaging bags, and directly below the storage chamber rows A conveyor which is arranged so as to be able to travel in a circulating manner and receives a packaging bag dropped from the storage chamber, and then transports it to the stacking unit and drops it , and the bottom opening / closing mechanism covers the bottom of each storage chamber While a bottom plate is provided, a drive member is provided for reciprocating the bottom plate along the direction in which the storage chambers are arranged, and the number of open bottoms of the storage chamber is changed by changing the movement stroke of the bottom plate. a place that is a Having the features.

According to the above configuration, each row of stick-type packaging bags manufactured simultaneously by the packaging machine is individually placed in the corresponding storage chamber, and then the bottom of the arbitrary number of storage chambers is opened to open the required number of packages. The bags are dropped and received on the conveyor, and the packaging bags received by the running of the conveyor are dropped and accumulated on the accumulation unit.
Counting in the process of dropping the packaging bag from the storage chamber and accumulation of the required number can be performed. In other words, the counting unit and the stacking unit can be aggregated and arranged in the space below the storage chamber. Compared to the conventional device, where it is essential to arrange the conveyor toward the counting unit located at a position away from the storage chamber, a significant space saving can be realized, and the manufacturing cost can also be reduced. Can do.

In particular, in the bottom opening / closing mechanism of the present invention, the number of components can be reduced and further space saving can be achieved as compared with the case where the bottom of the storage chamber is individually opened and closed using an air cylinder or the like.

The following configuration may also be used.
(1) The conveyor is capable of traveling cyclically by a predetermined distance intermittently, and the stacking portion is provided in front of the moving direction of the upper traveling surface of the conveyor, and a packaging bag is provided on the upper traveling surface of the conveyor. Is received, all the packaging bags received as the conveyor travels a predetermined distance are dropped into the stacking portion from the front end of the upper travel surface. The required number of packaging bags dropped from the storage chamber are received by the upper running surface of the conveyor waiting at the lower side, and all of the packaging bags received by the running of the conveyor are dropped and accumulated in the stacking unit.

(2) A plurality of guide plates are erected at predetermined intervals on the running surface of the conveyor, and the same number of mounting portions positioned immediately below the storage chambers are formed when the conveyor is stopped. ing. The packaging bag dropped from the storage chamber is securely received in the corresponding placement portion while being guided by the guide plates on both sides. Further, even when the conveyor is driven at a high speed, the packaging bag is held in the placement portion, and is prevented from protruding or dropping from the conveyor.

(3) The storage chambers are divided into two sets each having a predetermined number in the arrangement direction, and the bottom opening / closing mechanism and the conveyor are provided for each set of the storage chambers. The opening / closing operation time at the bottom of the storage chamber and the time for transferring the packaging bag to the stacking unit by the conveyor can be shortened.
(4) A shutter that can be opened and closed is provided at an intermediate position in the depth direction of the storage chamber. When the shutter is closed, the packaging bag supplied from the packaging machine is temporarily received, and the packaging bag is then opened to open the bottom of the storage chamber. It is supposed to be dropped. The supplied packaging bag is received in a horizontal posture by the shutter, and when the shutter is opened, the horizontal posture is maintained and dropped to the bottom side of the storage chamber. The packaging bag can be accommodated in the accommodation chamber in a normal posture.

(5) The shutter has a shape in which a plurality of openings aligned with the accommodation chamber are arranged at the same pitch as the arrangement pitch of the accommodation chamber with respect to the main body plate that penetrates the accommodation chambers along the arrangement direction. And a shutter driving member for reciprocating the shutter between an open position where each opening is aligned with a corresponding storage chamber and a closed position where each opening is retracted to the side of the corresponding storage chamber. Is provided. With a simple structure, the operation of accommodating the packaging bag in a normal posture with respect to each accommodation chamber can be performed all at once.

  According to the present invention, it is possible to realize space saving in providing the counting and accumulating device.

1 is a schematic side view showing a counting and accumulating apparatus and a packaging machine according to an embodiment of the present invention. Partially cutaway front view showing the vicinity of the arrangement part of the counting and accumulating device The perspective view which shows the manufacturing process of a packaging bag typically Side cross section of counting section Cross section viewed from the front Plan view Partially omitted cross-sectional view taken along line VII-VII in FIG. Schematic plan view of conveyor Sectional view showing the operation up to the middle of the counting process of the first cycle Sectional view showing the operations up to the end of the counting process and integration process in the first cycle Sectional drawing which shows operation | movement until the integration process of the 1st cycle is completed and the counting process of the 2nd cycle starts Sectional drawing which shows operation | movement until the integration process of the 2nd cycle is completed

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, an apparatus for counting and accumulating stick-type packaging bags manufactured by an automatic filling and packaging machine is illustrated.
As shown in FIGS. 1 and 2, the counting and accumulating device 20 is attached to the discharge (supply) side of the vertical multi-row automatic filling and packaging machine 10, and the stick-type packaging bag p accumulated by the device 20 is a bucket. A predetermined number of packages are conveyed by the conveyor 80 to the next process such as boxing. The stick-type packaging bag p (hereinafter simply referred to as packaging bag p) has a content of powder such as sugar and is formed in an elongated and substantially cylindrical shape.

The function of the vertical multi-row automatic filling and packaging machine 10 (hereinafter simply referred to as the packaging machine 10) of this embodiment will be briefly described with reference to FIG.
The raw fabric wrapping film fed out from the film roll F is cut into 10 rows by a predetermined width by the slitter 11, and each wrapping packaging film f is wound in the width direction in the vertical sealing device 12 and is placed on the overlapping end. After the vertical seal is applied, a cylindrical body is formed. After the horizontal seal is applied at a predetermined position of the cylindrical body by the horizontal seal device 13, the contents stored in the hopper 14 (FIG. 1) are stored. A semi-wrapping bag is formed by filling with the filling chute 15. The semi-wrapping bags are sent out one cycle at a time, and further sealed horizontally to form a stick-shaped packaging bag closed at both ends. Each packaging bag p is manufactured. As a result, as for the packaging bag p, ten packages arranged in a horizontal row are manufactured at the same time and are discharged (supplied) intermittently.

  A counting and accumulating device 20 is disposed at a front position of the supply unit 17 of the packaging machine 10 described above. The counting and accumulating device 20 is provided so as to be placed on a casing 83 that houses one end side of the bucket conveyor 80. The apparatus 20 is roughly provided with a rectangular box-shaped main body portion 21 having an upper surface opening. A counting portion 22 of the packaging bag p is disposed on the upper side of the partition plate 25 in the main body portion 21 and a counting portion 22 is disposed on the lower side. A stacking unit 23 for stacking the packaging bags p and transferring to the bucket conveyor 80 is continuously provided.

The structure of the counting unit 22 will be described in detail with reference to FIGS. A storage chamber structure 27 is formed on the upper side of the counting unit 22, and the storage chamber structure 27 is further configured by stacking the upper structure 30 with a predetermined gap 37 formed on the upper surface of the lower structure 40. . In the upper structure 30, a pair of front and rear side walls 31 that are long in the left-right direction are arranged at a predetermined interval, and a partition wall 32 having the same height is provided in the region near the left and right end portions between the front and rear side walls 31. Each sheet is handed over at a predetermined interval in the left-right direction. As a result, in the upper structural body 30, five upper storage chambers 33 that are elongated in the front-rear direction are formed at a constant pitch in a region close to the left and right ends.
The upper storage chamber 33 has a length and width that are slightly larger than the packaging bag p, and has a depth that is, for example, slightly more than four times the thickness of the packaging bag p.
An intermediate space 35 having a width slightly more than three times that of the upper accommodation chamber 33 is provided between the left and right upper accommodation chamber rows 33A.

In the lower structure 40, a pair of front and rear side walls 41 that are also long in the left-right direction are arranged at the same interval as the upper structure 30 side. In the region between the left and right side walls 41 between the front and rear side walls 41, partition walls 42 having almost the same height as the upper structural body 30 side are passed by six sheets at predetermined intervals in the left-right direction. As a result, in the upper half region, which is close to the left and right ends, five lower storage chambers 43 that are elongated in the front-rear direction are formed at a constant pitch that aligns with each of the upper storage chambers 33 of the upper structure 30 described above. Has been.
However, the depth of the lower storage chamber 43 is substantially the same as that of the upper storage chamber 33, but it is formed a little wider so that the two packaging bags p can be stored side by side while being partly stacked. An intermediate space 45 having the same width as the upper structure 30 side is provided between the left and right lower storage chamber rows 43A.
A movable bottom plate 55, which will be described in detail later, is disposed on the bottom surface of the lower structure 40.

  The lower structure 40 and the upper structure 30 having such a structure are stacked with a predetermined gap as described above, and the connecting body 38 (FIG. 6) is moved up and down while closing the front and rear openings of the gap 37. The housing chamber structure 27 in which the upper and lower structural bodies 30 and 40 are integrated is formed by being applied to the entire length of the outer surface over the side walls 31 and 41 and being fixed. A guide groove 39 aligned with the gap 37 is cut over the entire length at a position corresponding to the gap 37 on the inner surface of each coupling body 38.

  As shown in FIG. 4, a chute 18 facing obliquely downward is individually connected to each supply portion 17 of the packaging bag p over 10 rows in the packaging machine 10 described above, and the lower end of each chute 18 is accommodated. Each of the ten upper storage chambers 33 provided in the chamber structure 27 faces the upper surface, specifically the end position on the packaging machine 10 side on the upper surface.

A pair of left and right shutters 50 that can simultaneously open and close the bottom surfaces of the upper storage chambers 33 of the left and right upper storage chamber rows 33A are provided in the gap 37 of the storage chamber structure 27. As shown in FIG. 6, the shutter 50 has a main body plate 51 that is square in plan view and has a thickness that fits almost tightly into the gap 37. The inside is slidably fitted in the left-right direction.
In the main body plate 51 of each shutter 50, five openings 52 having the same cross-sectional shape as the bottom surface of the upper storage chamber 33 are formed at the same pitch as the upper storage chamber 33.

  On the other hand, a pair of left and right air cylinders 54 are mounted in a horizontal posture and facing each other on both the left and right sides of the position where the shutter 50 is disposed in the main body 21. The left and right air cylinders 54 are configured such that the piston rods 54 </ b> A expand and contract by the arrangement pitch of the upper accommodating chamber 33, and the tip ends of the piston rods 54 </ b> A of the air cylinders 54 are the outer ends of the left and right shutters 50, respectively. It is connected to the edge.

As shown on the left side of FIGS. 5 and 6, when the piston rod 54A of the air cylinder 54 is contracted, the respective openings 52 of the shutter 50 are retracted outward from the positions where they are aligned with the corresponding upper accommodating chambers 33. In other words, when the piston rod 54A is extended as shown in the right side of FIGS. 5 and 6, each opening 52 of the shutter 50 corresponds to the corresponding upper storage. It moves forward to an open position that aligns with the chamber 33 and opens its bottom surface.
In short, the extension of the piston rod 54A of the air cylinder 54 causes the shutter 50 to advance to the open position, simultaneously opening the bottom surfaces of the upper storage chambers 33 for each of the five chambers, and the piston rod 54A contracting to the original position. The shutter 50 is retracted to the closed position, and the bottom surfaces of the five upper storage chambers 33 are simultaneously closed.

  A pair of left and right movable bottom plates 55 are provided on the bottom surface side of the lower structure 40 to close the bottom surfaces of the lower storage chambers 43 of the left and right lower storage chamber rows 43A. As shown in FIG. 7, the movable bottom plate 55 has a planar view shape and is slidable in the left-right direction along a guide (not shown). As shown on the left side of FIG. 5, the original installation position of the left and right movable bottom plates 55 is a position where the tip edge 55A reaches the innermost partition wall 42, and at that time, depending on the inner region of the movable bottom plate 55, The entire bottom surface of the lower storage chamber 43 is closed for each lower storage chamber row 43A, and the outer region protrudes greatly to the outside of each lower storage chamber row 43A. Driving bodies 58 are respectively attached to the lower surfaces of the outward projecting ends of the movable bottom plates 55, and each driving body 58 is freely movable in the left-right direction along a guide (not shown).

Each driving body 58 is connected to the output shaft of the servo motor 59 via a drive connection mechanism such as a screw mechanism, and is driven according to the rotation amount (rotation time) of the output shaft of the servo motor 59. The amount of movement of the body 58 can be controlled.
Taking the movable bottom plate 55 on the right side of FIG. 5 as an example, when the servo motor 59 is driven to rotate in the forward direction from the state in which the movable bottom plate 55 is in the original position, the movable bottom plate 55 is moved through the movement of the driving body 58. When it slides in the opening direction, which is the right direction in the figure, and is driven to rotate in the reverse direction, the movable bottom plate 55 slides in the closing direction, which is the left direction in the figure.
At that time, if the rotation amount of the servo motor 59 is controlled, the stroke of the reciprocating motion of the driving body 58 can be controlled, and accordingly, the bottom surface of an arbitrary number of lower storage chambers 43 among the five chambers of the lower storage chamber row 43A. It can be opened and then closed.

More specifically, the rotation amount of the servo motor 59 can be controlled in five steps corresponding to the number of the lower accommodating chambers 43. For example, when the minimum rotation amount of the first step is selected, the servo motor 59 By being driven forward by the same amount of rotation, the movable bottom plate 55 moves by a minimum stroke in the opening direction as shown on the right side of FIG. 5, and only the bottom surface of the innermost lower housing chamber 43 is opened. Thereafter, the servo motor 59 is reversely driven by the same amount of rotation, so that the movable bottom plate 55 moves back to the original position while closing the bottom surface of the innermost lower housing chamber 43.
As the rotation amount is increased, the number of lower storage chambers 43 whose bottom surfaces are opened increases sequentially from the inside, and the bottom surfaces of the five lower storage chambers 43 are all opened at the maximum. Control of the rotation amount of the servo motor 59 is programmed in advance.
As will be described in detail later, opening a predetermined number of bottom surfaces of the lower storage chamber 43 and dropping the packaging bags p onto the conveyor 60 functions to count the number of packaging bags p.

  A conveyor 60 is disposed at a position almost immediately below the region where the movable bottom plate 55 is disposed in each of the lower components 40 described above. The two conveyors 60 are also located immediately above the horizontal partition plate 25 that partitions the stacking unit 23 described above. In the central portion of the partition plate 25, a drop port 25A having a square planar shape that matches the planar shape of the intermediate space 45 between the left and right lower storage chamber rows 43A is opened.

  The conveyor 60 has a structure in which two belt conveyors 61 are arranged side by side as shown in FIG. The belt conveyor 61 has a structure in which an endless timing belt 64 is wound between a pair of driving pulleys 62 and a driven pulley 63, and the driving pulleys 62 and the driven pulleys 63 of both belt conveyors 61 are common. Are connected by shafts 62A and 63A. The conveyor 60 as a whole is formed with a length dimension larger than the entire length of the lower structure 40 and a width dimension comparable to the depth of the lower structure 40.

  On the outer surface of each timing belt 64 constituting the belt conveyor 61, a plurality of guide plates 66 are aligned at the same pitch as the lower housing chamber 43 of the lower structure 40 and between the belt conveyors 61 in the width direction. It is formed in the form. Thus, a placement portion 67 is formed between the guide plates 66 adjacent in the running direction of the belt conveyor 61 so that the packaging bag p can be placed on both timing belts 64 and placed.

  As shown in FIG. 5, the conveyor 60 having such a structure arranges the drive pulley 62 on the inner side below the lower structure 40, in other words, the drive pulley 62 is inserted into the drop opening 25 </ b> A of the partition plate 25. It is provided in a form slightly facing above. As the initial position, the five placement portions 67 formed on the upper running surface 60 </ b> A of the conveyor 60 are set so as to be aligned directly below the lower housing chambers 43 of the lower structure 40.

  Servo motors 68 are connected to the shafts 62A of the drive pulleys 62 in the respective conveyors 60. The timing belt 64 is counterclockwise in the right-hand conveyor 60 when viewed from the front, and the timing belt in the left-hand conveyor 60. 64 are circulated in the clockwise direction. Further, both servomotors 68 are driven intermittently at predetermined time intervals in synchronism, and specifically, the timing belt 64 drops all the packaging bags p placed on the upper running surface 60A. The number of the mounting portions 67 formed between the guide plates 66 so that it can be dropped to 25A is at least the number (five) formed on the upper running surface 60A, and the same number as necessary. Is also intermittently circulated so as to send only one or two more.

The stacking unit 23 functions to stack the necessary number of packaging bags p dropped from the drop opening 25A of the partition plate 25 in the counting unit 22 and move to the bucket conveyor 80.
Therefore, as shown in FIG. 2, a transition path 70 having a vertically long rectangular tube shape having a cross-sectional shape aligned with the drop opening 25 </ b> A of the partition plate 25 is provided, and the introduction port 71 at the upper end is the drop opening of the partition plate 25. While being connected to the lower surface of 25A, the outlet 72 at the lower end is arranged so as to correspond directly above the transition position set in the bucket conveyor 80.

  In the middle of the transition path 70 in the height direction, first, second, and third opening / closing plates 73, 74, and 75 that fully close or fully open the transition path 70 are provided in three stages. Each of the opening / closing plates 73, 74, 75 is individually opened / closed by an air cylinder (not shown). The opening / closing timing of each of the opening / closing plates 73, 74, 75 depends on conditions such as the number of packaging bags p to be accumulated and the conveying speed of the bucket conveyor 80. It is individually programmed so that it can be migrated at the right time.

Next, the operation of this embodiment will be described with reference to FIGS. In this embodiment, the case where the packaging bags p automatically manufactured by the packaging machine 10 are grouped by 24 and transferred to each bucket 81 of the bucket conveyor 80 is illustrated.
In a state where all of the left and right shutters 50 of the counting unit 22, the left and right movable bottom plates 55, and the three open / close plates 73, 74, and 75 of the stacking unit 23 are closed, the packaging machine 10 produces a horizontal row. The ten packaging bags p arranged side by side slide down the chute 18 and are individually placed in the upper storage chamber 33, and are received by the closed shutter 50 as shown in FIG. 9A. Once received by the shutter 50, the packaging bag p is housed in the upper housing chamber 33 while maintaining a normal horizontal posture.

Next, as shown in FIG. 9B, when the left and right shutters 50 are opened, the bottom surfaces of all the ten upper storage chambers 33 are opened, and the ten packaging bags p remain in a horizontal posture. It falls into the lower storage chamber 43 directly below and is received by the movable bottom plate 55 in the closed original position. Next, as shown in FIG. 5C, the left and right movable bottom plates 55 are moved to a position where the bottom surfaces of all the five lower chambers 43 are opened, and are thereby accommodated in all the lower chambers 43. A total of 10 packaging bags p were dropped and received on each placement portion 67 formed on the upper running surface 60 </ b> A of the conveyor 60. At this time, for example, the packaging bag p is corrected by the guide plate 66 where it is going to fall in an oblique posture, or is bounced by hitting the bottom surface of the mounting portion 67 by the guide plate 66, and is referred to FIG. As shown, after taking a posture substantially orthogonal to the running direction of the conveyor 60, each placement portion 67 is placed and accommodated on both timing belts 64.
During this time, the opened shutter 50 is closed, and the 10 manufactured packaging bags p are individually placed in the upper storage chamber 33 and received by the shutter 50.

  Subsequently, as shown in FIG. 10 (A), the left and right movable bottom plates 55 are moved back to their original positions, and simultaneously the bottom surfaces of the lower storage chambers 43 of all ten rooms are closed, and the conveyor 60 is circulated for a predetermined distance. The left and right packaging bags p placed on the placement part 67 of each conveyor 60 are transferred toward the drop opening 25A, dropped into the transition path 70 from the drop opening 25A, and 10 packages are packed. The bag p is received by the first opening / closing plate 73. After that, when the left and right shutters 50 are opened, ten packaging bags p accommodated in the upper accommodation chambers 33 of all 10 drops into the lower accommodation chamber 43 and are received by the movable bottom plate 55.

  Next, as shown in FIG. 10 (B), the left and right movable bottom plates 55 are moved again to the position where the bottom surfaces of all the five lower storage chambers 43 are opened, and a total of 10 packaging bags p are conveyed by the conveyor. 60 is received by being dropped into each placement portion 67 of the upper traveling surface 60A. During this time, the shutter 50 is closed, and the next 10 manufactured packaging bags p are placed in the upper storage chamber 33 and received by the shutter 50. Subsequently, as shown in FIG. 5C, the left and right movable bottom plates 55 are moved back to their original positions, and simultaneously the bottom surfaces of the lower storage chambers 43 of all ten chambers are closed, and the conveyor 60 circulates a predetermined distance. Then, the left and right five packaging bags p placed on the placing portion 67 of the conveyor 60 are dropped into the transition path 70 from the drop opening 25A, and another 10 packages are added to obtain a total of 20 packaging bags p. The state is received by the first opening / closing plate 73. After that, when the left and right shutters 50 are opened, ten packaging bags p accommodated in the upper accommodation chambers 33 of all 10 drops into the lower accommodation chamber 43 and are received by the movable bottom plate 55.

Next, as shown in FIG. 11 (A), the left and right movable bottom plates 55 are moved to a position where only the bottom surfaces of the two lower housing chambers 43 are opened, so that only the four packaging bags p are left and right. In the conveyor 60, it is received by being dropped into the two placement portions 67 on the side close to the drop opening 25A. During this time, the shutter 50 is closed, and 10 manufactured packaging bags p are placed in the upper storage chamber 33 and received by the shutter 50.
Subsequently, as shown in FIG. 5B, the left and right movable bottom plates 55 are moved back to their original positions, and the bottom surfaces of all the ten lower chambers 43 including two opened chambers are closed simultaneously. The left and right conveyors 60 travel a predetermined distance, and the left and right two packaging bags p received by the placement unit 67 are dropped into the transition path 70 from the drop opening 25A, and four more packages are added. A total of 24 packaging bags p are received by the first opening / closing plate 73.
As described above, the necessary 24 packets are counted in the counting unit 22, and the same number of packaging bags p are dropped into the stacking unit 23.

  At the same time, the next counting cycle is entered, and as shown in FIG. 11 (B), when the left and right shutters 50 are opened, 10 packaging bags p housed in the upper housing chambers 33 of the 10 rooms are respectively housed in the lower part. Although falling into the chamber 43, in the lower storage chamber 43 in each of the two inner chambers, the packaging bag p is dropped on the conveyor 60 by the movement of the movable bottom plate 55, so that one packaging bag p is movable. On the other hand, in the lower storage chamber 43 of each of the three outer chambers, since the previous packaging bag p remains without dropping, the two packaging bags p are moved by the movable bottom plate 55. Received status.

Next, as shown in FIG. 11 (C), the left and right movable bottom plates 55 are moved to positions where the bottom surfaces of all the lower storage chambers 43 of each of the five chambers are opened. One packaging bag p is dropped from the lower storage chamber 43 one by one, and two packaging bags p are dropped from the lower storage chamber 43 of the outer three chambers, and dropped to the placement portion 67 on the corresponding conveyor 60, respectively. Thus, a total of 16 packaging bags p, 8 left and right, fall on the conveyor 60. In particular, at the location where the two packaging bags p are dropped, there is a possibility that the directions of the packaging bags p may vary due to interference with each other. It can be received in a posture close to normal.
During this time, the shutter 50 is closed, and 10 manufactured packaging bags p are placed in the upper storage chamber 33 and received by the shutter 50.
In addition, when the first opening / closing plate 73 of the stacking unit 23 is opened, the 24 packaging bags p received by the first opening / closing plate 73 are dropped and transferred onto the second opening / closing plate 74 below. It is. After that, the first opening / closing plate 73 returns to the closed position.

Subsequently, as shown in FIG. 12 (A), the left and right movable bottom plates 55 are moved back to their original positions, and the bottom surfaces of all the ten lower chambers 43 are closed, and at the same time, the left and right conveyors 60 are predetermined. After traveling a distance, the left and right eight packaging bags p dropped and received in the placement portion 67 are dropped into the transition path 70 from the drop opening 25 </ b> A, and these are received by the first opening / closing plate 73.
After that, when the left and right shutters 50 are opened, ten packaging bags p accommodated in all ten upper accommodation chambers 33 fall into the lower accommodation chamber 43, respectively, and all previous packaging bags p are now dropped. Therefore, a total of 10 packaging bags p are received on the movable bottom plate 55, one by one.
During this time, when the second opening / closing plate 74 is opened, the 24 packaging bags p received by the second opening / closing plate 74 are dropped and transferred onto the third opening / closing plate 75 below. After that, the second opening / closing plate 74 returns to the closed position.

Next, as shown in FIG. 12 (B), the left and right movable bottom plates 55 are moved to positions where the bottom surfaces of the lower housing chambers 43 of the four chambers are opened. Are dropped and placed on the placement portions 67 on the corresponding conveyors 60, respectively. During this time, the shutter 50 is closed, and 10 manufactured packaging bags p are placed in the upper storage chamber 33 and received by the shutter 50.
Subsequently, as shown in FIG. 4C, the left and right movable bottom plates 55 are moved back to their original positions, and simultaneously, the bottom surfaces of all the ten lower chambers 43 including the four opened chambers are closed, The left and right conveyors 60 traveled a predetermined distance, dropped the left and right four packaging bags p into the loading section 67, dropped into the transition path 70 from the drop opening 25A, and dropped first. Eight packages are added to the 16 packages, and a total of 24 packaging bags p are received by the first opening / closing plate 73.
Similarly, the necessary 24 packets are counted in the counting unit 22, and the same number of packaging bags p are dropped into the stacking unit 23.

  During this time, when it is time for one bucket 81 of the bucket conveyor 80 to reach the transition position, the third opening / closing plate 75 is opened, so that the 24 packaging bags p received by the third opening / closing plate 75 can be obtained. It falls, is received in the bucket 81, and is conveyed toward the next process.

  Thereafter, the 10 packaging bags p supplied at the same time are once put in the upper storage chamber 33 and then dropped together into the lower storage chamber 43 when the shutter 50 is opened, and then the movement stroke of the movable bottom plate 55 is controlled. As a result, the bottom surface of the predetermined number of lower storage chambers 43 is opened, and the number of packaging bags p corresponding to the number is dropped into the placement portion 67 of the conveyor 60 and the conveyor 60 travels a predetermined distance. Accordingly, the operation of dropping the packaging bag p dropped onto the conveyor 60 into the dropping opening 25A is repeated until the number of dropped packages reaches 24. While being sequentially received from the plate 73 to the third opening / closing plate 75, it is sequentially received by each bucket 81 of the bucket conveyor 80.

As described above, according to the present embodiment, a number of advantages can be obtained.
Counting in the process of dropping the packaging bag p from the lower storage chamber 43 and accumulation of the required number can be performed. In other words, the counting unit 22 and the stacking unit 23 are integrated in the space below the lower storage chamber 43. Compared to conventional devices that required a large transport conveyor to be placed toward the counting unit located away from the storage chamber, space saving can be achieved because the transport conveyor can be removed. In addition, the manufacturing cost can be reduced.

  When changing the number of openings of the bottom surface of the lower storage chamber 43, a movable bottom plate 55 is provided to cover the bottom surface of each lower storage chamber 43, and the movement stroke of the movable bottom plate 55 is changed by a servo motor 59. Since the number of opening of each bottom surface of 43 is changed, for example, when compared with a case where a bottom plate is individually arranged on the bottom surface of each lower storage chamber 43 and the bottom plate is individually opened and closed, the number of components is reduced. Space can be saved.

  The packaging bag p dropped from the lower housing chamber 43 is received by being dropped on the upper running surface 60A of the conveyor 60 waiting at the lower side, and is sandwiched between the upper running surface 60A of the conveyor 60 by the guide plate 66. Further, since each mounting portion 67 is arranged to correspond to directly below the individual lower storage chamber 43, the packaging bag p dropped from the lower storage chamber 43 is reliably handled while being guided by the guide plates 66 on both sides. Received in the mounting portion 67. Further, even when the conveyor 60 is driven at a high speed, the packaging bag p is held in the placement portion 67 and is prevented from protruding or dropping from the conveyor 60. As a result, the conveyor 60 can be driven at a high speed.

Since the lower storage chamber 43 is divided into two left and right sets of five chambers, each set includes a movable bottom plate 55 that is driven and controlled by a servo motor 59 and a conveyor 60 that is intermittently driven by a servo motor 68. The opening / closing operation time of the storage chamber 43 and the operation time for dropping the packaging bag p into the stacking portion 23 can be shortened, and the manufacturing speed can be further increased.
An upper storage chamber 33 whose bottom surface is opened and closed by a shutter 50 is provided on the lower storage chamber 43, and the supplied packaging bag p is guided to the upper storage chamber 33 and received by the shutter 50 which is once closed, and is opened by opening the same. Since the packaging bag p is configured to drop into the lower housing chamber 43, the packaging bag p is received in a horizontal posture by the shutter 50 and then dropped into the lower housing chamber 43 while maintaining the same horizontal posture. The packaging bag p can be stored in the lower storage chamber 43 in a normal posture.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above-described embodiment, the case where two belt conveyors using narrow timing belts are used side by side as conveyors that receive the packaging bags dropped from the lower storage chambers and then transfer them to the stacking unit is illustrated. One belt conveyor using a wide timing belt may be used, and conversely, it may be divided into three or more belt conveyors.

(2) In the above embodiment, the mounting plate is formed by raising the guide plate on the running surface of the conveyor. However, the packaging bag is placed on the upper running surface of the conveyor depending on conditions such as the shape and contents of the packaging bag. If it can be dropped in a substantially constant posture, it may be omitted to stand the guide plate, that is, to form the mounting portion, and such a thing is also within the technical scope of the present invention. included.
(3) As a conveyor, instead of a belt conveyor with a guide plate, other types of conveyors such as a small bucket conveyor may be used.

(4) In the above embodiment, the left and right sets of lower storage chambers are divided into two groups, and each set is provided with a movable bottom plate and a conveyor. You may prepare so that all the lower accommodation chambers may be covered.
(5) Corresponding to the above, a series of upper storage chambers may be provided, and the shutter may be covered by a single sheet extending over the entire upper storage chamber.
(6) On the other hand, it is good also as a structure which removes an upper storage chamber and a shutter, and accommodates the supplied packaging bag in a lower storage chamber (single storage chamber) as it is.

(7) The driving member for the shutter is not limited to the air cylinder exemplified in the above embodiment, and other driving members such as a solenoid and a servo motor can be applied.
(8) In the above embodiment, the case where the number of stacks is 24 for the packaging machine that manufactures the packaging bags over 10 rows is exemplified, but the number of stacks is set to an arbitrary number of 20 or more. Is possible.
(9) The present invention is not limited to the 10-row type exemplified in the above embodiment, and can be applied to and applied to all vertical multi-row automatic filling and packaging machines having other numbers of rows. The number of lower storage chambers or the like in the counting and stacking apparatus may be set in accordance with the manufacturing column, and similarly, the number of stacking can be arbitrarily set.

p ... Stick-type packaging bag 10 ... Packaging machine 18 ... Chute 20 ... Counting and accumulating device 22 ... Counting unit 23 ... Accumulating unit 25 ... Partition plate 25A ... Drop-in port 33 ... Upper accommodation chamber 43 ... Lower accommodation chamber (accommodation chamber)
43A ... Lower storage room row (storage room row)
DESCRIPTION OF SYMBOLS 50 ... Shutter 51 ... Main-body board 52 ... Opening part 54 ... Air cylinder (shutter drive member)
55. Movable bottom plate (bottom plate; bottom opening / closing mechanism)
59. Servo motor (driving member; bottom opening / closing mechanism)
DESCRIPTION OF SYMBOLS 60 ... Conveyor 60A ... Upper running surface 61 ... Belt conveyor 62 ... Drive pulley 63 ... Driven pulley 64 ... Timing belt 66 ... Guide plate 67 ... Mounting part 68 ... Servo motor 70 ... Transition path 73, 74, 75 ... Opening / closing plate 80 ... Bucket conveyor

Claims (6)

A packaging bag counting and accumulating device attached to a packaging machine that simultaneously manufactures a plurality of rows of stick-type packaging bags and supplies them intermittently,
A storage chamber in the same row that has a bottom portion that can be opened and closed, and stores the packaging bags supplied from the packaging machine corresponding to each row;
A bottom opening and closing mechanism for opening any number of bottoms of the storage chamber and dropping the packaging bag;
A conveyor that is arranged so as to be able to circulate directly under the storage chamber row and that is transferred from the storage chamber to the stacking unit after receiving the packaging bag dropped from the storage chamber;
Is provided ,
In addition, the bottom opening / closing mechanism is provided with a bottom plate that covers the bottom of each storage chamber, and includes a drive member that reciprocates the bottom plate in the direction in which the storage chambers are arranged. The packaging and counting device of a packaging bag, wherein the number of openings at each bottom of the storage chamber is changed by changing The conveyor can circulate by a predetermined distance intermittently, and the stacking unit is provided in front of the moving direction of the upper running surface of the conveyor, and a packaging bag is received on the upper running surface of the conveyor. the conveyor counted accumulation of packaging bag mounting according to claim 1 Symbol characterized in that all of the packaging bag was received along with that predetermined distance running is dropped into the stacking unit from the front end of the upper running surface then was apparatus. A plurality of guide plates are erected at predetermined intervals on the running surface of the conveyor, and the same number of mounting portions that are located immediately below the storage chambers are formed when the conveyor is stopped. The counting and accumulating device for a packaging bag according to claim 2 . The accommodation chamber is divided into two sets of a predetermined number in its arrangement direction, for each set of the storage chamber, according to claim claims 1, characterized in that said said bottom closing mechanism conveyor is provided the bag count integrated device according to any one of 3. A shutter that can be opened and closed is provided at an intermediate position in the depth direction of the storage chamber. When the shutter is closed, the packaging bag supplied from the packaging machine is temporarily received, and the packaging bag is dropped to the bottom of the storage chamber when the shutter is opened. The packaging and counting device for a packaging bag according to any one of claims 1 to 4 , wherein the device is configured as described above. The shutter has a shape in which a plurality of openings aligned with the accommodation chamber are arranged at the same pitch as the arrangement pitch of the accommodation chamber, with respect to the main body plate penetrating the accommodation chambers along the arrangement direction thereof. A shutter drive member is provided for reciprocating the shutter between an open position where each opening is aligned with a corresponding storage chamber and a closed position where each opening is retracted to the side of the corresponding storage chamber. 6. The counting and accumulating device for packaging bags according to claim 5, wherein:

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