JP2008151668A - Combination metering device for laminate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve yields and improve line speed (production efficiency) by selecting a combination (optimum combination) where the total weight of a laminate (packaging body) is not less than a prescribed value and is closest to a prescribed value as in three series of packs of sliced meat products. <P>SOLUTION: Combination metering device comprises: a group of conveyors, at least having a metering conveyor and a conveyance conveyor for successively transferring a body to be accumulated; a buffer box having n pockets where the bottom can be opened or closed freely; a pool device of the body to be accumulated; and a programmed sequence control unit so that a combination (optimum combination) where the total weight of N bodies to be accumulated is not less than a prescribed value and is closest to a prescribed value is selected, based on a signal from an auto checker provided in the metering conveyor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combination weighing device for an integrated body, such as a triple pack of sliced meat products, capable of selecting a combination (optimal combination) that has a combined weight of an integrated (packed) body that is equal to or greater than a predetermined value and is closest to a predetermined value. .

  Conventionally, when producing slicing ham, bacon, etc., using raw sliced ham, bacon, etc., using a slicing device, it is rotated at a constant speed using 1-2 m of irregular shaped raw ham, etc. Slicing ham and the like are manufactured by cutting and cutting into a predetermined slice thickness sequentially from the tip by transferring and supplying the raw wood to the cutting blade at a constant speed. In addition, the thickness per slice ham or the weight per pack is made constant by changing the thickness according to the density of the slice ham or the like or the area difference of the cut surface (for example, Patent Document 1). reference). In addition, these sliced ham and bacon are often sold as an integrated package (triple pack) in which three packs are connected. Recently, in the case of an integrated package such as a triple pack, the weight per pack is predetermined. Even if it is not within the range, it is only necessary that the combined addition value (total weight) of the triple packs be within the predetermined weight range. In addition, sliced irregular shaped ham and bacon logs to a certain thickness, and the packaging discharged from the packaging machine in multiple rows, for example vacuum packaging such as ham after deep-drawn packaging, is the next process. There is also known an individual feeding device that changes and feeds one line at a predetermined position on the conveyor or in a certain direction so that it can be processed quickly and accurately in the weighing, connection (stacking), and boxing processes. (For example, refer to Patent Document 2).

  On the other hand, as a device for weighing, sorting and combining packages, a conveyor belt is provided on the upper surface of the circular main body of the combination weighing device so as to be pivotable about the circular central portion, and a plurality of pool mechanisms are provided around the main body. A circular arrangement is provided directly above each weighing hopper, and the objects to be weighed put into the hopper from the carry-in device are distributed and supplied to each pool mechanism by turning and transporting the conveyor belt, and from the pool mechanism to each weighing hopper. A combination weighing device (for example, refer to Patent Document 3) suitable for combination weighing of highly sticky objects to be weighed, such as a boiled dish configured to discharge the objects to be weighed, or after counting the number close to the packaging unit, In order to save the fine adjustment time to put several or one unit at a time in order to achieve the required number of packaging units, any quantity smaller than the packaging unit can be circulated and transported as a single unit and combined. A charging device that inputs a small number of small parts than the target quantity to be collected, which is intended to be collected at a discharge location in the middle of transportation and packaged for each required packaging unit, and a charging device Combine the two units of the circulation conveyor that circulates and conveys the parts thrown in for each number of thrown parts and the parts group that is thrown in while the parts are transported by the circulation conveyor as a pre-set collection unit An arithmetic unit that determines whether the target quantity is reached or not, and, as a result of the combination in the arithmetic unit, the combination part that becomes the target quantity is discharged to the bagging and packaging apparatus provided on the way of the circulating conveyor. An article quantitative collection device (see, for example, Patent Document 4) is known. However, in both cases, the objects to be packaged are packaged after weighing before packaging. Further, the former is a device that supplies the objects to be weighed to each pool mechanism by turning and conveying the conveyor belt, and the latter is the packaging. Since an arbitrary quantity smaller than the unit is circulated and transported as one unit and the combination calculation is performed, it is not suitable for combination weighing of packaging bodies such as ham and bacon that require line speed.

  Further, the plurality of aligning means are all supplied by supplying the selected articles conveyed from the respective supply paths, calculated by the combination calculating means, and conveyed by the discharging device for each selected article. The selected articles are aligned in the conveying direction at the discharge port, and the articles X supplied from the respective supply paths are combined and weighed in an aligned state and discharged into the packaging process. A combination weighing system (see, for example, Patent Document 5) is known, which can discharge snack confectionery articles such as shaped potato chips that have been formed into a packaging process while being combined and weighed in an aligned state. In addition to the equipment, alignment means, and weighing machine, a pool gate, intermediate gate, and final gate are required. On unsuitable for combination weighing of the package of emissions such as, there are problems such as requiring a footprint equivalent with the device becomes large.

JP 2001-121475 A JP 2000-142968 A JP-A-9-15027 Japanese Patent Laid-Open No. 5-124630 JP 7-146170 A

  Conventionally, a combination of sliced ham and bacon stacked packages (triple packs) is prepared by continuously weighing three pack products within a predetermined weight range conveyed in one row, and a three pack combination addition value is predetermined. Those products that fall within the weight range are made into a triple pack product, and pack products that are out of the predetermined weight range are pooled, and the combination of the pack products is manually selected again, and the added value of the three pack combinations falls within the predetermined weight range 3 Although it was a continuous pack product, if the 3 pack combination addition value was kept within a predetermined weight range, there was a problem in terms of yield and production speed. The object of the present invention is to provide a combination (optimum) that the combined weight of the stacked (packaging) bodies such as triple packs having a good yield and excellent line speed (production efficiency) is equal to or greater than a predetermined value. An object of the present invention is to provide a combination weighing device for an integrated body which can select a combination.

  The present inventors have intensively studied to solve the above problems, and based on a signal relating to the weight of each stacked body from an auto checker provided on the weighing conveyor, the total weight of the stacked body such as a pack is a predetermined value. As a basic concept for producing an integrated (packaging) body combination weighing device that can effectively operate a sequence control device programmed so that a combination (optimal combination) that is closest to a predetermined value can be selected. The line speed was given the highest priority, and the next priority was to improve yield and simplify the structure of the equipment. For example, in order to achieve a line speed of up to 120 packs / min in a triple slice meat pack, instead of selecting the optimum combination from all the pooled packs, only the third pack that is transported last is used. The total weight is adjusted in step (3), and the pack selected as the optimum combination from the separately pooled packs for adjustment is naturally dropped onto the transport conveyor. We have found that the target line speed can be secured by picking up from the conveyor and transferring it to the pool buffer box located above the conveyor, and the yield can be improved with a simple structure, and the present invention is completed. It came to do.

  That is, the present invention includes (1) a conveyor group having at least a weighing conveyor and a transfer conveyor for sequentially transferring the objects to be stacked; and n pieces (n is 5) disposed above the transfer conveyor and having a bottom portion that can be opened and closed. A pool box of stacked bodies comprising a buffer box having a pocket of an integer of ~ 20) and pick-up means capable of selecting a stacked body on the transport conveyor and storing it in the pocket of the buffer box; A combination (optimal) in which the total weight of N objects (N is an integer of 2 to 5) is greater than or equal to a predetermined value and is closest to a predetermined value based on a signal relating to the weight of each object from the auto checker. A sequence control device programmed so that a combination can be selected, and the sequence control device directly conveys it on the conveyor. N-1 total weight corresponding to other than the last one of the stacks to be stacked, the Nth corresponding to the last one of the stacks, and n stacks in each pocket of the buffer box The optimum combination is selected from n + 1 combinations of the combined weights of N objects to be accumulated with a total of n + 1 body weights, and the Nth object to be accumulated corresponding to the last one of the objects to be accumulated When the body is selected as the optimum combination, the pick-up means is not activated by the signal from the sequence control device, and the N-th stack is transported as it is on the transport conveyor, while the p-th of the buffer box (P is an integer of 5 to 20) When the stack assembly of the pockets is selected as the optimum combination, the bottom of the p-th pocket of the buffer box is opened by the signal from the sequence control device, so Aggregates The N-th stacked body corresponding to the last one of the stacked bodies on the transport conveyor is transferred to the buffer box by the pickup means by the signal from the sequence control device. The present invention relates to an integrated combination weighing device characterized by being configured to be transferred to a p-th pocket.

  According to the present invention, (2) the weighing conveyor or the transfer conveyor is provided with a line-out mechanism for removing the stacked objects when the weight of the individual stacked objects being transported is outside a predetermined range. The integrated combination weighing device according to (1) described above, and (3) the pickup means includes a reverse sucker mechanism positioned above the transport conveyor starting end side, a rotating sucker mechanism positioned above the rotation sucker mechanism, It consists of a linear motion unit that can be moved horizontally with respect to a horizontal rail, and can be moved horizontally on any pocket of the buffer box. The rotating suction cup is connected to an independent intake / exhaust source, and by opening and closing the intake / exhaust valve, the stacked body can be attached to and detached from the inverted suction cup and the rotating suction cup by a signal sent from the sequence controller. The integrated weighing device according to (1) or (2), wherein (4) each pocket of the buffer box has a lower end at the lower end thereof. It consists of two inclined plates inclined in the direction, two side plates, and a single bottom plate provided in the middle of the pocket. Each bottom plate is operated by a signal sent from a sequence controller. Further, the present invention relates to the integrated combination weighing device according to any one of (1) to (3), wherein a bottom plate opening / closing mechanism capable of opening and closing the bottom plate at a predetermined position is provided.

  Furthermore, the present invention provides (5) the assembly weighing apparatus according to any one of (1) to (4) above, wherein (5) the object to be accumulated is a sliced meat product pack, and (6) sliced meat The product pack is a triple pack (N = 3), and the number of pockets of the buffer box is 10 (n = 10). The combination for an aggregate according to any one of (1) to (5) above It relates to a weighing device.

  The combined weighing device of the present invention uses a natural drop from each pocket of a buffer box arranged immediately above the conveyor, so the structure is simple, and the combined (packed) bodies such as triple packs are added together. Since it is possible to select a combination (optimal combination) that has a weight that is equal to or greater than a predetermined value and that is closest to the predetermined value, it is possible to improve yield and improve line speed (production efficiency).

  The combined body combination weighing device according to the present invention includes a conveyor group including at least a weighing conveyor for sequentially transferring the objects to be stacked and a transfer conveyor; n is an integer of 5 to 20), and a stacking device pooling device comprising pick-up means capable of selecting a stacking object on the transfer conveyor and storing it in the pocket of the buffer box; A combination in which the total weight of N stacked bodies (N is an integer of 2 to 5) is equal to or greater than a predetermined value and is closest to a predetermined value based on a signal relating to each stacked body weight from the auto checker provided in (Hereinafter, also referred to as “optimal combination”).

  In addition, the combination weighing device for an accumulation body according to the present invention includes a total weight of N-1 corresponding to a number other than the last one of the objects to be accumulated that are directly conveyed on the conveyance conveyor by the sequence control device, N + 1 combinations of the total weight of the N pieces to be accumulated, with the Nth piece corresponding to the last one of n and the total of n + 1 pieces of n pieces in each pocket of the buffer box. When the optimum combination is selected from the above, and the N-th accumulation object corresponding to the last one of the accumulation objects is selected as the optimum combination, the pickup means is not activated by the signal from the sequence control device. When the N-th stack is transported as it is on the transport conveyor, on the other hand, the stack in the p-th (p is an integer of 5 to 20) pocket of the buffer box is selected as the optimal combination. Sequence control device The bottom of the p-th pocket of the buffer box is opened by the signal from the buffer box, and the stacked bodies that have fallen naturally are transported on the transport conveyor as they are, and the stack on the transport conveyor is transported by the signal from the sequence controller. An Nth accumulation target corresponding to the last one of the body is transferred to the pth pocket of the buffer box by the pickup means.

  As said to-be-assembled body, slice meat meat products, such as sliced ham and bacon, frozen hamburgers, etc. which are comparatively thin, Especially the said pack product can be illustrated suitably. In addition, examples of the integrated body include a multi-pack product in which 2 to 5 individual packs are bundled with a band or the like, and a tray accommodation product in which 2 to 5 such as frozen hamburgers are accommodated in one tray. Can do. Hereinafter, the combination weighing device for an integrated body according to the present invention will be described mainly by taking the case of a pack as the body to be stacked and a triple pack as the stacked body.

  The conveyor group is not particularly limited as long as it sequentially includes a weighing conveyor and a transfer conveyor, but upstream of the weighing conveyor, packs such as sliced bacon packed and packed by a filling and packaging machine are sequentially and continuously arranged in a line. It is preferable to arrange the carrying-in conveyor for carrying in to adjoin. Moreover, it is preferable to arrange | position the carrying-out conveyor which conveys the pack transferred from a conveyance conveyor sequentially sequentially to the triple pack formation apparatus adjacent to the conveyance conveyor adjacently. As each conveyor of these conveyor groups, the thing which can convey a pack sequentially sequentially in a line on a strip | belt-shaped endless belt can be illustrated suitably.

  The weighing conveyor is equipped with an auto checker that measures the weight of the pack and detects foreign matter such as mixed metal pieces while continuously transferring the packs successively transferred from the carry-in conveyor in a row. Things can be illustrated. From this auto-checker, the measured value of the pack weight is signaled and sent to the sequence controller. In addition, when a foreign material such as a metal piece is detected by an auto checker, the weighing conveyor has a line-out mechanism for removing the pack by inclining the upstream side of the belt belt of the weighing conveyor downward by an air cylinder or the like. Is provided.

  The conveyor conveys the packs that are sequentially transferred from the weighing conveyor in a row, and the conveyor conveys the pack according to a signal relating to the weight of the pack sent from the sequence controller or the auto checker. A line-out mechanism that eliminates the pack when the upper pack weight is significantly larger than a predetermined set weight (for example, more than 112.5% of the set weight) or less (for example, less than 92.5% of the set weight) Is preferably provided. Thus, by eliminating packs whose pack weight is outside the predetermined range in advance, the yield can be improved and the number of defective triple packs can be reduced. As such a line-out mechanism, the pack is removed by inclining the upstream side of the belt-like belt of the conveyer downward by an air cylinder or the like by a signal relating to the weight of the pack sent from the sequence control device or the auto checker. A mechanism can be illustrated. The weighing conveyor may be provided with a line-out mechanism that excludes packs whose pack weight is outside a predetermined range.

  Examples of the pickup means include a means for picking up the pack on the conveyor by a suction method, a means for picking up by a scooping method, a means for picking up by a gripping method, etc. Pickup means for picking up is preferred. More specifically, as a pickup type pickup means, a reversing sucker mechanism positioned above the conveyor conveyor start end side, a rotating sucker mechanism positioned above it, and a rotating sucker mechanism on an arbitrary pocket of the buffer box It is composed of a linear motion unit that can be moved horizontally with respect to the horizontal rail so that it can run with respect to the horizontal rail, and the reverse suction cup and the rotary suction cup of the reverse suction cup mechanism and the rotary suction cup mechanism communicate with independent intake and exhaust sources. By opening and closing the intake / exhaust solenoid valve according to the signal sent from the sequence control device, the pack is adsorbed to the inverted sucker and the rotating sucker in the intake state, and the pack is inverted in the exhaust state. An example of the pickup means is configured to be detached from the rotating sucker, that is, the pack can be detachably held on the reversing sucker or the rotating sucker.

  The reversing suction cup mechanism includes a suction pipe having a suction cup at the tip, an air cylinder in which a piston rod is fixed to the end of the suction and discharge pipe, and the suction pipe can be advanced and retracted, a holding plate to which the air cylinder is fixed, a holding plate The rotary actuator is capable of turning the plate 180.degree., And a flexible tube for communicating the intake / exhaust tube and the intake / exhaust source via an intake / exhaust solenoid valve. Similarly, the rotating sucker mechanism includes an intake / exhaust pipe having a suction cup at the tip, an air cylinder in which a piston rod is fixed to the end of the intake / exhaust pipe, and the intake / exhaust pipe can be advanced and retracted, and a holding plate to which the air cylinder is fixed And a rotary actuator capable of rotating the holding plate by 90 °, and a flexible tube for communicating the intake / exhaust pipe and the intake / exhaust source via an intake / exhaust electromagnetic valve. Further, the number of intake pads such as a reversing suction cup and a rotating suction cup may be one, but it is preferable to have two to four suction pads because they can be reliably sucked and held.

  For example, the reverse sucker mechanism lowers the reverse sucker first, and ascends a predetermined distance (the height at which the pack can be reversed 180 °) while adsorbing and holding the pack on the transport conveyor at the start end. The rotary sucker mechanism is rotated 180 ° and held upward, and then the rotating sucker mechanism of the rotating sucker mechanism descends from above the pack held upward by the inverted sucker mechanism. At the same time, the rotating suction cup is lifted by a predetermined distance (the height at which the pack can be rotated 90 °) while holding the pack, and is rotated 90 ° by the rotary actuator at that position. A pack that is held in a substantially vertical state by a rotating suction cup is predetermined by a linear motion unit in response to a signal sent from a sequence controller. Horizontally transferred on the pocket p-th) suction is released at the pivot sucker mechanism, so that the pack is accommodated to fall within a predetermined pocket.

  The buffer box has n pockets (n is an integer of 5 to 20), preferably about 10 pockets whose bottom can be freely opened and closed. As the shape of each pocket, a pack can be accommodated, and the bottom portion is configured to be opened and closed based on a signal from the sequence control device, for example, a bottomed vertical flat rectangular tube shape with an open top portion Although it does not restrict | limit in particular, The thing comprised suitably from the two inclined flat plates which the lower end inclined in the pack conveyance direction, the two vertically long parallelogram-shaped side plates, and one rectangular bottom plate may be illustrated suitably. In addition, it is preferable that the partition wall plate between the pockets is a common boundary wall between adjacent pockets excluding both end portions (two) from the viewpoint of making the buffer box compact. The bottom plate opening / closing mechanism is preferably one that can open and close the bottom plate at a predetermined position (p-th) by operating the air cylinder by a signal sent from the sequence control device. When the inclined flat plate is employed, the bottom plate is preferably provided in the middle of the pocket. When the air cylinder of the bottom plate opening / closing mechanism is retracted by a signal sent from the sequence controller and the predetermined bottom plate is opened, the pocket The inner pack is naturally dropped while being guided by an inclined flat plate whose lower end is inclined in the pack transport direction, and is soft-landed on the transport conveyor and transported.

  Based on a signal sent from an auto-checker provided on the weighing conveyor, the sequence control device, when the weight of each pack is out of a predetermined range, is an operation command for removing the pack to the line-out mechanism of the conveyor. When the weight of each pack is within a predetermined range, information regarding the weight of each pack and the order of the triple pack is stored, and when the pack corresponds to the third of the triple pack, The total weight of the pack weight and the sum of the weight of the first pack of the triple pack and the weight of the pack corresponding to the weight of the second pack, and the pack weight in each of the n pockets and one of the triple pack The combined weight of the sum of the weight of the pack and the weight of the pack corresponding to the second weight, that is, the (n + 1) total weight is calculated to select the optimum combination. Next, when the pack corresponding to the third of the three packs is selected as the optimum combination, the sequence controller outputs the signal of the non-operation command of the pickup means, while the p-th (p is 5 to 5) of the buffer box. When the pack of 20 pockets) is selected as the optimum combination, the sequence control device outputs a signal for opening the bottom of the p-th pocket of the buffer box and a signal for operating the pickup means. .

  The operation command from the sequence control device to the pickup means is to first output the intake / exhaust pipe advance (down) command signal to the air cylinder of the reverse suction mechanism and to switch the solenoid valve for intake in order to reduce the pressure in the intake / exhaust pipe Is output again, and then the intake / exhaust pipe retraction (up) command signal is output to the air cylinder, then the 180 ° inversion command signal is output to the rotary actuator, and then the solenoid valve is set to normal pressure in the intake / exhaust pipe. After the switch command signal is output for exhaust, a 180 ° reverse inversion command signal is output to the rotary actuator, and the initial position is restored. In synchronization with the output of the 180 ° reversal command signal, the suction / exhaust pipe advance (down) command signal is output to the air cylinder of the rotating suction cup mechanism, and the solenoid valve is used for intake to reduce the pressure in the intake / exhaust pipe. Output the switching command signal, and again output the retracting (upward) command signal to the air cylinder, then output the 90 ° rotation command signal to the rotary actuator, and then to the servo motor of the linear motion unit After outputting the signal of the transition command to the p-th pocket, output the switching command signal for exhausting the solenoid valve for exhausting to make the intake and exhaust pipes at normal pressure, and return the command to the servo motor of the linear motion unit to the initial position Next, a 90 ° reverse rotation command signal is output to the rotary actuator, and the initial position is restored.

  When the combination weighing device for an integrated body according to the present invention is used to start the combination weighing of the pack, an initial command signal is output from the sequence control device to the pickup means. This initial command is executed by continuously executing the operation command to the pickup means by the number of pockets n of the buffer box (n is an integer of 5 to 20), and the pack is accommodated in each pocket. .

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, the technical scope of this invention is not limited to these illustrations. In addition, the weight in the following Examples means the content weight.

  1 to 5 show a combination weighing device for an integrated packaging body according to the present invention.

  The pack combination device 1 is a combination device for triple packs. 1) A carry-in conveyor (not shown) for continuously carrying packs (set weight 40 g), a weighing conveyor 2, a carry conveyor 3, and a carry-out conveyor 4 2) Select a buffer group 10 having 10 pockets 11 that are openable and closable at the bottom, and a pack P on the transport conveyor on the start end side to select a buffer. A pack pool device comprising pick-up means 20 that can be accommodated in the pocket 11 of the box 10, and 3) 3 packs based on a signal relating to the weight of each pack from an auto checker (not shown) provided on the weighing conveyor 2. Programmed so that the total weight is a predetermined value (120 g), or close to a predetermined value above a predetermined value. It includes Nsu control device (not shown).

  The carry-in conveyor sequentially carries the slice bacon packed and packed by the filling and packaging machine sequentially in a row. The weighing conveyor 2 is provided with an auto checker that measures the pack weight and detects foreign matter such as mixed metal pieces while continuously transferring the packs P successively transferred from the carry-in conveyor in a row. The measured value of the pack weight is signaled from the auto-checker and sent to the sequence control device, and the line-out mechanism (Fig. Not shown). While the packs P transferred successively from the weighing conveyor 2 are continuously transported in a row, the transport conveyor 3 receives a signal relating to the weight of the packs sent from the sequence control device. When the upper pack weight is significantly larger than the set weight of 40 g (for example, more than 45 g) or less (for example, less than 37 g), the line-out mechanism 5 for removing the pack is provided. The unloading conveyor 4 continuously unloads the packs transferred from the conveying conveyor 3 and transfers them to a triple pack forming device (not shown).

  The pick-up means 20 includes a reversing sucker mechanism 21 positioned above the conveyor conveyor starting end side, a rotating sucker mechanism 22 positioned above it, and a rotating sucker mechanism 22 horizontally on an arbitrary pocket 11 of the buffer box 10. The reversing suction cup mechanism 21 is composed of a linear motion unit 24 movably attached to the horizontal rail 23. The reversing suction cup mechanism 21 has a reversing suction cup 21a at the tip, and the suction and discharge pipe ends. An air cylinder 21d having a piston rod 21c fixed thereto and allowing the intake / exhaust pipe 21b to advance and retreat, a holding plate 21e to which the air cylinder 21d is fixed, a rotary actuator 21f capable of reversing the holding plate 21e by 180 °, It is composed of a flexible tube 21g for communicating the inside of the intake / exhaust pipe and the intake / exhaust source via an intake / exhaust solenoid valve. Further, the rotating sucker mechanism 22 includes an intake / exhaust pipe 22b having a rotating sucker 22a at the tip, an air cylinder 22d having a piston rod 22c fixed to the end of the intake / exhaust pipe, and allowing the intake / exhaust pipe 22b to advance and retract, The holding plate 22e to which the cylinder 22d is fixed, the rotary actuator 22f that can rotate the holding plate 22e by 90 °, and the intake / exhaust pipe and the intake / exhaust source to communicate with each other via an intake / exhaust solenoid valve. The rotary actuator 22f is horizontally moved by a servo motor 25 provided in the linear motion unit 24. As described above, the four reverse suction cups 21a and the four rotary suction cups 22a of the reverse suction cup mechanism 21 and the rotary suction cup mechanism 22 are connected to independent intake / exhaust sources, and signals sent from the sequence control device. Thus, the pack can be detachably held on the inverted suction cup 21a and the rotating suction cup 22a by opening and closing the electromagnetic valve for intake and exhaust.

  First, the reverse suction cup 21a is lowered by the reverse suction cup mechanism 21 and is raised by a predetermined distance (a height at which the pack can be turned 180 °) while adsorbing and holding the pack P on the conveying conveyor on the start end side. The rotary actuator 21f is provided so that it can be reversed (clockwise in FIG. 1) to hold the pack upward. Next, the rotating sucker 22a of the rotating sucker mechanism 22 descends from above the pack P held upward by the inverted sucker mechanism 21, and at the same time the suction in the inverted sucker mechanism 21 is released, the rotating sucker 22a Is lifted by a predetermined distance (the height at which the pack can be rotated by 90 °) with the pack P adsorbed and held, and rotated to the 90 ° buffer box side by the rotary actuator 22f at that position (counterclockwise in FIG. 1). Then, the pack P held in the substantially vertical state by the rotating sucker 22a is horizontally transferred onto the predetermined pocket 11 by the linear motion unit 24 in response to a signal sent from the sequence control device, and the rotating sucker mechanism The suction at 22 is released, and the pack P is accommodated in the predetermined pocket 11.

  The buffer box 10 has ten pockets 11. Each pocket 11 has two inclined flat plates 12 whose lower ends are inclined in the pack conveying direction, two longitudinal parallelogram-shaped side plates 13 and one rectangular shape. It is comprised from the bottom plate 14 of a shape. The inclined flat plate 12 serves as a common boundary wall of adjacent pockets except for the two end portions (two). The bottom plate 14 is provided in the middle of the pocket 11, and the bottom plate opening / closing mechanism capable of opening and closing the bottom plate 14 at a predetermined position by operating an air cylinder 15 in response to a signal sent from the sequence control device. Are provided. When the air cylinder 15 of the bottom plate opening / closing mechanism is retracted by a signal sent from the sequence control device and a predetermined bottom plate 14 is opened, the pack P in the pocket 11 has an inclined flat plate 12 whose lower end is inclined in the pack transport direction. It falls naturally while being guided by the soft landing on the conveyor 3.

  For example, after the pack P within a predetermined weight range is stored in advance in each of the ten pockets 11 of the buffer box 10 using the pickup means 20, the combination weighing by the combined package combination weighing device is started. . The slice bacon pack that has been continuously conveyed in a line on the carry-in conveyor at a line speed of 120 packs / minute is transferred to the conveyor 3 while being measured on the weighing conveyor 2. The packs corresponding to the first and second packs of the triple pack are transported as they are and transferred from the transport conveyor 3 to the carry-out conveyor 4, but the pack P corresponding to the third pack of the triple packs is the weighing conveyor. 2 is transferred to the conveyor 3, the sum (W1 + W2) of the pack weight corresponding to the first weight (W1) and the second weight (W2) of the triple pack, and the triple pack The sequence controller calculates the total weight of the total weight of the third weight (P0W3) or the total weight of the pack weight (P1W3 to P10W3) in each pocket 11 and the total weight is a predetermined value. (120g) or a combination that is equal to or greater than a predetermined value and is closest to the predetermined value (optimal combination), and if W1 + W2 + P0W3 is the optimal combination, the start side corresponding to the third of the triple pack Carrying The packs on the conveyor are transported as they are, and transferred from the transport conveyor 3 to the carry-out conveyor 4. For example, if the combination W1 + W2 + P6W3 with the pack in the sixth pocket is the optimal combination, the sequence controller In response to the signal, the pack P on the transfer conveyor on the start end side corresponding to the third pack of the triple pack is started to be accommodated in the sixth pocket by the pickup means 20 and at the same time the sixth pocket 11 The bottom plate 14 is opened, and the pack P in the sixth pocket naturally falls onto the transport conveyor and is transported to the carry-out conveyor 4. The pick-up means 20 that has finished storing in the sixth pocket before the third pack corresponding to the third triple pack is transferred from the weighing conveyor 2 to the transport conveyor 3 Return to position. Thereafter, this operation is repeated.

  Using the pack combination apparatus of this example, a triple pack (1000 samples) of each pack having a set weight of 40 g was manufactured. When the pack weight was outside of 37 to 45 g (92.5% to 112.5%), it was excluded by the line-out mechanism. As a result, as shown in FIG. 6, the average weight was 125.13 g, the number of defects was 4 (less than 120 g), and the mesh was 4.275%. On the other hand, a triple pack (1000 samples) of each pack having a set weight of 40 g was manufactured in a conventional manner without using the pack combination apparatus of this example. When the pack weight was out of 38 to 45 g (95% to 112.5%), it was excluded by the line-out mechanism. Moreover, the thing less than 120 g was excluded by post-weighing. As a result, as shown in FIG. 7, the average weight was 130.19 g, the number of defects was 1, and the mesh was 8.492%. When this result is simply calculated, it was found that the yield is improved by about 4%.

It is a side view of the combination weighing | measuring apparatus for integrated bodies of this invention. It is a top view of the combination weighing | measuring apparatus for integrated bodies of this invention. It is a perspective view of the combination weighing | measuring apparatus for integrated bodies of this invention. It is a figure which shows the pick-up means of the combination weighing | measuring apparatus for integrated bodies of this invention. It is a figure which shows the conveyance means of the combination weighing | measuring apparatus for integrated bodies of this invention. It is a graph (vertical axis; number, horizontal axis; triple pack weight) showing a histogram when a triple pack (1000 samples) is manufactured using the pack combination device of the present invention. It is a graph (vertical axis; number, horizontal axis; triple pack weight) showing a histogram when a triple pack (1000 samples) is manufactured using a conventional pack combination apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pack combination apparatus 2 Weighing conveyor 3 Conveying conveyor 4 Unloading conveyor 5 Line-out mechanism 10 Buffer box 11 Pocket 12 Inclined flat plate 13 Side plate 14 Bottom plate 15 Air cylinder 20 Pickup means 21 Reverse suction cup mechanism 21a Reverse sucker 21b Intake / exhaust pipe 21c Piston rod 21d Air Cylinder 21e Holding plate 21f Rotary actuator 21g Flexible tube 22 Rotating sucker mechanism 22a Rotating sucker 22b Intake / exhaust tube 22c Piston rod 22d Air cylinder 22e Holding plate 22f Rotary actuator 22g Flexible tube 23 Horizontal rail 24 Linear motion unit 25 Servo motor P pack

Claims (6)

A conveyor group including at least a weighing conveyor and a transfer conveyor for sequentially transferring the objects to be stacked; and n pockets (n is an integer of 5 to 20) disposed above the transfer conveyor and capable of opening and closing at the bottom. A buffer box having a buffer box and pick-up means capable of selecting the objects to be collected on the transport conveyor and storing them in the pockets of the buffer box; and each object from an auto checker provided on the weighing conveyor. Based on a signal related to the weight of the stacked body, a combination (optimal combination) can be selected such that the total weight of N stacked bodies (N is an integer of 2 to 5) is a predetermined value or more and is closest to the predetermined value. A programmed sequence controller;
By the sequence control device, the N-1 total weight corresponding to the last one of the objects to be accumulated, and the (N-1) total weight corresponding to other than the last one of the objects to be accumulated conveyed on the conveyor. And an optimal combination is selected from n + 1 combinations of the total weight of N objects to be accumulated, with a total of n + 1 weights of n objects to be accumulated in each pocket of the buffer box,
When the N-th object to be accumulated corresponding to the last one of the objects to be accumulated is selected as the optimum combination, the pickup means is not activated by the signal from the sequence control device, and the N-th object to be accumulated is selected. When the body is transported on the transport conveyor as it is, and the accumulation object of the p-th (p is an integer of 5 to 20) pocket of the buffer box is selected as the optimum combination, the signal from the sequence control device, The bottom of the p-th pocket of the buffer box is opened, and the stacked bodies that have fallen naturally are transported on the transport conveyor as they are, and the last one of the stacked bodies on the transport conveyor is received by a signal from the sequence controller. The N-th accumulation object corresponding to the number is transferred to the p-th pocket of the buffer box by the pickup means. Integrated-body combination weighing apparatus according to symptoms.   2. The line-out mechanism is provided on the weighing conveyor or the transfer conveyor, wherein a line-out mechanism for removing the stacked objects when the weight of the individual stacked objects being transported is out of a predetermined range. Combination weighing device for integrated body.   The pick-up means is a horizontal suction cup mechanism that is located above the conveyor conveyor starting end side, a rotary sucker mechanism that is located above, and a rotary sucker mechanism that can move horizontally over an arbitrary pocket of the buffer box. It consists of a linear motion unit attached to the rail so that it can run, and the reverse suction cup and the rotary suction cup of the reverse suction cup mechanism and the rotary suction cup mechanism are connected to an independent intake / exhaust source and sent from the sequence controller. 3. The structure according to claim 1, wherein the stacked body can be detachably held on the inverted suction cup or the rotating suction cup by opening and closing the intake / exhaust valve in accordance with the received signal. Combination weighing device for the integrated body.   Each pocket of the buffer box is composed of two inclined flat plates whose lower ends are inclined in the direction of transporting the stack, two side plates, and a single bottom plate in the middle of the pocket. 4. The integrated body according to claim 1, further comprising a bottom plate opening / closing mechanism capable of operating the air cylinder by a signal sent from the apparatus to open and close the bottom plate at a predetermined position. Combination weighing device.   5. The combination weighing apparatus for an accumulation according to claim 1, wherein the accumulation target is a sliced meat product pack. 6. The combination weighing for an aggregate according to claim 1, wherein the sliced meat product pack is a triple pack (N = 3) and the number of pockets of the buffer box is 10 (n = 10). apparatus.

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