JP2016003038A - Bag feeding device and packaging machine provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag feeding device and a packaging machine having the same which can be used universally for a variety of packaging bags, such as a chuck bag, a gazette bag, a flat bag, and a large bag, and can reduce a burden on a bag supplier by allowing the packaging bags to be arranged roughly.SOLUTION: A bag feeding device 1 comprises: a bag feeding conveyor 2 for conveying packaging bags a sequentially; bag capturing means 3 for capturing the packaging bags a sequentially conveyed by the bag feeding conveyor 2 one by one; a bag arrangement part 5 which arranges one packaging bag a captured by the bag capturing means 3, and comprises bag position correction means 4; and bag feeding means 6 for holding the one packaging bag a arranged at the bag arrangement part 5 and feeding to bag holding means g of a packaging machine P.

Description

  The present invention relates to a bag feeding device that can be used for a wide range of bags such as a chuck bag, a gusset bag, a flat bag, and a large bag, and a packaging machine including the bag feeding device.

  Conventionally, as a supply method of packaging bags in a packaging machine, a conveyor method (Patent No. 4011567, etc.) for sequentially supplying packaging bags by a conveyor and a magazine method (Patent No. 1) that sequentially supplies from packaging bags stacked in a magazine 4149466 gazette etc.).

  In general, the chuck bag is provided with a chuck portion at the upper portion, so that the upper portion is bulky when stacked, and the gusset bag is provided with gussets on both sides, so that both ends are bulky when stacked. Therefore, if they are stacked in a magazine in the bag feeding device, warpage occurs and supply by the magazine method cannot be performed. Therefore, supply by the conveyor method as shown in FIG. 26 has been performed. That is, the packaging bags a are sequentially shifted in a sashimi-like manner on the bag feeding conveyor 100, and are sequentially released by the bag feeding conveyor 100 to the position detected by the bag leading edge detection unit 102 while being loosened by the bag feeding roller 101. Was sent. On the other hand, flat bags, large bags, and the like have been supplied in a magazine system by being stacked as a bag bundle on a magazine in a bag feeder.

  However, for example, when both a zipper bag and a flat bag are supplied, a bag supply device having two types of bag supply systems is required. In addition, in order to carry out accurate bag supply by either the conveyor method or the magazine method, the packaging bags must be arranged and arranged on the bag supply conveyor or magazine, which is cumbersome and burdensome to the bag supplier. It was.

Japanese Patent No. 4149466 Japanese Patent No. 4011567

  Accordingly, an object of the present invention is to be widely used for supplying various packaging bags such as chuck bags, gusset bags, flat bags, large bags, etc., and to be able to arrange the packaging bags roughly to reduce the burden on the bag supplier. An object of the present invention is to provide a bag feeding device that can carry out the packaging and a packaging machine having the same.

  What achieves the above object is a bag feeding conveyor for sequentially transporting packaging bags, a bag capturing means for capturing the packaging bags sequentially transported by the bag feeding conveyor, and the bag capturing means. One packaging bag captured by the above is disposed, and a bag placement portion having a bag position correcting means, and one packaging bag placed in the bag placement portion are held and supplied to the bag gripping means of the packaging machine. And a bag supply means.

  The bag feeding conveyor preferably has a conveyor width adjusting mechanism for adjusting the conveyor width.

  The conveyor width adjustment mechanism is provided along the width direction of the bag feeding conveyor and is rotatable, and is attached to the width adjustment screw and is movable in the width direction as the width adjustment screw rotates. A screw receiving member, a movable stock guide movable in the width direction together with the screw receiving member, a fixed pulley provided on one end side in the width direction of the bag feeding conveyor and spanning a first conveyor belt, and the bag feeding A movable pulley provided on the other end side in the width direction of the conveyor and spanning a second conveyor belt, and the movable pulley is engaged with a width adjusting guide member provided on the screw receiving member. It is preferable that the screw receiving member is configured to move in the width direction as the screw receiving member moves in the width direction.

  The bag catching means receives a packaging bag captured by the first bag catching means and catches and raises the packaging bags sequentially conveyed by the bag feeding conveyor one by one. It is preferable to have the 2nd bag capture | acquisition means for transferring to the said bag arrangement | positioning part provided adjacent to the one end side outer side of the width direction of a bag conveyor.

  It is preferable that the bag supply means has a height correction means for correcting the height of the packaging bag held in a vertical posture.

  Moreover, what solves the said subject is a packaging machine provided with the said bag supply apparatus.

According to the bag supply apparatus of claim 1, it can be generally used for supplying various packaging bags such as a chuck bag, a gusset bag, a flat bag, and a large bag, and the packaging bag can be arranged roughly. The burden can be reduced.
According to the bag supply apparatus of claim 2, the width of the conveyor can be adjusted corresponding to the bag width, and in addition to various types of packaging bags, it is possible to supply packaging bags of various sizes. become.
According to the bag feeding apparatus of the third aspect, the conveyor width can be easily adjusted, and the conveyor width adjusting mechanism can be configured with a simple structure.
According to the bag feeding apparatus of the fourth aspect, it is possible to more reliably capture a single packaging bag from the bag feeding conveyor.
According to the bag supply apparatus of claim 5, the height (upper claw height) of the upper end side portion of the packaging bag held in the vertical posture is appropriately changed and supplied to the bag gripping means (grip pair). be able to.
According to the packaging machine of claim 6, it can be used for a variety of packaging bags such as chuck bags, gusset bags, flat bags, large bags, etc. Can be reduced.

It is the plane schematic diagram of one Example of the packaging machine provided with the bag supply apparatus of this invention. It is explanatory drawing for demonstrating the bag supply process of the bag supply apparatus shown in FIG. It is a plane schematic diagram of the bag supply conveyor of the bag supply apparatus shown in FIG. It is the left side schematic of the bag supply conveyor of the bag supply apparatus shown in FIG. FIG. 2 is a schematic plan view of the vicinity of an upstream end of a bag feeding conveyor of the bag feeding apparatus shown in FIG. 1. It is a front schematic diagram of the upstream end part vicinity in the bag supply conveyor of the bag supply apparatus shown in FIG. FIG. 2 is a schematic right side view of the vicinity of an upstream end of a bag feeding conveyor of the bag feeding apparatus shown in FIG. 1. FIG. 2 is a schematic plan view of the vicinity of a downstream end of a bag feeding conveyor of the bag feeding apparatus shown in FIG. 1. It is the front schematic of the downstream end part vicinity in the bag supply conveyor of the bag supply apparatus shown in FIG. FIG. 3 is a schematic right side view of the vicinity of the downstream end of the bag feeding conveyor of the bag feeding apparatus shown in FIG. 1. FIG. 2 is a schematic front view of the vicinity of first bag capturing means in the bag feeding apparatus shown in FIG. 1. FIG. 12 is a schematic left side view of FIG. 11. FIG. 2 is a schematic front view of the vicinity of second bag capturing means in the bag feeding apparatus shown in FIG. 1. It is the left side schematic of the bag arrangement | positioning part in the bag supply apparatus shown in FIG. It is a left side schematic diagram for demonstrating an effect | action of the bag position correction | amendment means of the bag arrangement | positioning part shown in FIG. It is a left side schematic diagram for demonstrating an effect | action of the bag position correction | amendment means of the bag arrangement | positioning part shown in FIG. It is a front schematic diagram for demonstrating an effect | action of the bag position correction | amendment means of the bag arrangement | positioning part shown in FIG. It is a plane schematic diagram of the bag arrangement | positioning part shown in FIG. It is the left side schematic of the 1st bag supply means in the bag supply apparatus shown in FIG. It is the front schematic of the 2nd bag supply means in the bag supply apparatus shown in FIG. It is a left side schematic diagram for demonstrating an effect | action of the height correction means of the 2nd bag supply means in the bag supply apparatus shown in FIG. It is a left side schematic diagram for demonstrating an effect | action of the height correction means of the 2nd bag supply means in the bag supply apparatus shown in FIG. It is a left side schematic diagram for demonstrating an effect | action of the height correction means of the 2nd bag supply means in the bag supply apparatus shown in FIG. It is a left side schematic diagram for demonstrating an effect | action of the height correction means of the 2nd bag supply means in the bag supply apparatus shown in FIG. It is explanatory drawing for demonstrating the usage method of the bag feeding apparatus of this invention. It is explanatory drawing for demonstrating the usage method of the conventional bag feeding apparatus.

  In the present invention, the bag feeding conveyor 2 for sequentially transporting the packaging bags a, the bag capturing means 3 for capturing the packaging bags a sequentially transported by the bag feeding conveyor 2 one by one, and the bag capturing means 3 The packaging bag P is disposed by holding the single packaging bag a captured by the bag positioning unit 5 having the bag position correcting means 4 and holding the single packaging bag a disposed in the bag positioning unit 5. By having the bag supply means 6 for supplying to the gripping means g, it can be used generally for supplying various packaging bags such as chuck bags, gusset bags, flat bags, large bags, and the packaging bags can be arranged roughly. The bag feeder 1 which can reduce the burden of a bag supplier and the packaging machine P provided with the same are realized.

A packaging machine equipped with a bag feeder of the present invention will be described with reference to an embodiment shown in FIGS.
The packaging machine P of this embodiment is an apparatus that opens a bag mouth of a packaging bag a, fills and seals an object to be packaged, and, as shown in FIG. Bag feeding process (1), chuck opening of the packaging bag with a chuck and printing and chucking and printing process (2), printing inspection and barcode authentication process for performing barcode inspection and barcode authentication ( 3), a bag opening step (4) for opening the bag mouth of the packaging bag, a filling step (5) for filling the packaging bag into the packaging bag, a vibration step (6) and (7) for applying vibration to the packaging item In addition, the step of pushing and blowing the article to be packaged (8), sealing the vicinity of the bag mouth in the horizontal direction, and removing the air in the packaging bag, the top seal and air venting process (9), the top seal is cooled, Packaging bag with the packaged items Which is a seal cooling and products apparatus for performing 10 step of the discharge step (10) is discharged to the outside of the apparatus. Although this embodiment is a rotary type packaging machine P, the present invention can be applied to a known linear movement type packaging machine.

  In this packaging machine P, as shown in FIG. 1, a stand 11 that freely supports the intermittent rotating shaft 12 extending in the vertical direction is provided on the machine base, and the movement is attached to the upper portion of the intermittent rotating shaft 12. On the body (disk-shaped rotating body) 10, ten bag gripping means (grip pairs) g for gripping or releasing the packaging bag a project radially from the intermittent rotation shaft 12 at equal angular intervals. It is provided as follows. Then, the packaging machine P removes the packaging bag a by the bag feeding device 1 in the bag feeding step (1), and the bag gripping means (grip pair) g that sequentially moves intermittently to the bag feeding station. Thus, the packaging bag a is configured to be supported in a suspended manner in a vertical posture.

  As shown in FIG. 1 or 2, the bag feeding apparatus 1 of the packaging machine P of this embodiment includes a bag feeding conveyor 2 for sequentially transporting the packaging bags a, and a package that is sequentially conveyed by the bag feeding conveyor 2. A first bag capturing means 3A and a second bag capturing means 3B for capturing the bags a one by one, and a single packaging bag a captured by the first bag capturing means 3A and the second bag capturing means 3B are arranged. In addition, a bag placement portion 5 having bag position correction means 4A and 4B and a first packaging bag a placed on the bag placement portion 5 and supplied to the bag gripping means g of the packaging machine P. It has a bag supply means 6A and a second bag supply means 6B.

  In the packaging machine P, the bag feeding apparatus 1 is for sequentially supplying the packaging bags a to the bag gripping means (grip pair) g in order to supply the packaging bags a to the subsequent packaging process. (1) Steps for sequentially sending the packaging bags a to the downstream side by the bag feeding conveyor 2 (see 1 in FIG. 2), (2) a bag capturing means 3A for picking one packaging bag a from the packaging bags a stacked on the bag feeding conveyor 2 , 3B (see 1 and 2 in FIG. 2), (3) a step of placing a single packaging bag a captured by the bag catching means 3A, 3B in the bag placement section 5 (2 in FIG. 2) (4) Step of correcting the position of one packaging bag a transferred to the bag placement section 4 by the bag position correcting means 15A, 15B (see 3 in FIG. 2), (5) First bag supplying means A step of delivering the packaging bag a held by 6A to the second bag supply means 6B (see 4 and 5 in FIG. 2); 6) Step of delivering the packaging bag a from the second bag supply means 6B to the grip pair g after correcting the height of the packaging bag a during transfer to the bag gripping means (grip pair) g of the packaging machine (FIG. 2). 6)). Hereinafter, each structure of the bag supply apparatus 1 will be described in detail.

  The bag feeding conveyor 2 is for sequentially transporting the packaging bags a, and the bag feeding conveyor 2 of this embodiment has a conveyor width adjusting mechanism 20 for adjusting the conveyor width.

  As shown in FIG. 5 or FIG. 8, the conveyor width adjusting mechanism 20 is a width adjusting screw provided so as to be rotatable in the width direction in the vicinity of the upstream end portion or the downstream end portion of the bag feeding conveyor 2. 21a, 21b, screw receiving members 22a, 22b attached to the width adjusting screws 21a, 21b and movable in the width direction as the width adjusting screws 21a, 21b rotate, and the width direction together with the screw receiving members 22a, 22b A movable stock guide 23 that can be moved to a fixed side pulley 25a that is provided on one end side in the width direction in the vicinity of the upstream end portion or the downstream end portion of the bag feeding conveyor 2 and spans the first conveyor belt 24. 25b and a movable side provided on the other end side in the width direction in the vicinity of the upstream end portion or the downstream end portion of the bag-feeding conveyor 2 and spanning the second conveyor belt 26 The movable pulleys 27a and 27b are engaged with width adjusting guide members 28a and 28b provided on the screw receiving members 22a and 22b, and the width of the screw receiving members 22a and 22b in the width direction is engaged. It is comprised so that it may move to the width direction with a movement.

  Since the bag feeding apparatus 1 of the present invention includes the conveyor width adjusting mechanism 20 as described above, the width of the conveyor can be adjusted in accordance with the bag width, and a bag of packaging bags having various dimensions can be supplied. become. Moreover, since the bag arrangement | positioning part 5 is provided adjacent to the one end side outer side of the width direction of the bag supply conveyor 2, the packaging bag a can be brought close to one end side. Furthermore, by using the conveyor width adjusting mechanism as the configuration of the conveyor width adjusting mechanism 20, the conveyor width can be easily adjusted and the conveyor width adjusting mechanism can be realized with a simple structure.

  More specifically, as shown in FIG. 3, the bag feeding conveyor 2 provided with the conveyor width adjusting mechanism 20 has a bag transport motor 29 at the upstream end, and the rotational force of the bag transport motor 29 Is configured to be transmitted to the drive shaft (ball spline shaft) 31 via the bag conveyance drive pulley 30 shown in FIG. 3 or FIG. Fixed side pulleys 25a and 25b are fixed to one end side in the width direction of the drive shaft (ball spline shaft) 31 and the downstream pulley shaft 32 (see FIG. 8) provided at the downstream end, respectively. Movable pulleys 27a and 27b are attached to the other end in the direction.

  Further, a first conveyor belt 24 is stretched around the fixed pulleys 25a and 25b, and a second conveyor belt 26 is stretched around the movable pulleys 27a and 27b.

  The first conveyor belt 24 or the second conveyor belt 26 is configured to rotate above the flat portions 33a and 23a of the fixed stock guide 33 or the movable stock guide 23 as shown in FIGS. When the bag conveyor motor 29 is driven, the first conveyor belt 24 and the second conveyor belt 26 are rotated in synchronization with each other, and the packaging bag a placed on the flat portions 33 a and 23 a of the fixed stock guide 33 and the movable stock guide 23. Is configured to be conveyed from the upstream side to the downstream side.

  Further, as shown in FIG. 4, the bag feeding conveyor 2 provided with the conveyor width adjusting mechanism 20 has a width adjusting motor 34 at the upstream end, and the rotational force of the width adjusting motor 34 is It is configured to be transmitted to the width adjusting screw 21a via the width adjusting drive pulley 35 shown in FIG. 4 or FIG.

  A width adjusting sprocket 36a fixed to the other end in the width direction of the width adjusting screw 21a and a width adjusting sprocket 36b fixed to the other end in the width direction of the width adjusting screw 21b provided at the downstream end. A chain (not shown) is looped over, and when the width adjusting motor 34 is driven, the width adjusting screws 21a and 21b rotate in synchronization.

  Further, as shown in FIG. 7 or FIG. 10, the movable side pulleys 27a and 27b are respectively provided with width adjustment guide members 28a and 28a provided on the screw receiving members 22a and 22b, respectively, near the upstream end portion or the downstream end portion. 28b, and is configured to move in the width direction as the screw receiving members 22a and 22b move in the width direction.

  When the width adjusting motor 34 is driven, the width adjusting screws 21a and 21b rotate in synchronization with each other, and the screw receiving members 22a and 22b attached to the width adjusting screws 21a and 21b are adjusted in width with these rotations. The fixed stock guide 33 and the movable stock guide 23 are separated in the width direction by moving on the screws 21a and 21b by the same distance in the same direction and moving the movable stock guide 23 along with the movement of the screw receiving members 22a and 22b. The distance is varied so that the conveyor width can be adjusted. On the other hand, since the movable pulleys 27a and 27b engaged with the width adjusting guide members 28a and 28b also move with the movement of the screw receiving members 22a and 22b, the first conveyor belt 24 and the second conveyor belt 26 in the width direction are also moved. The separation distance is also changed.

  The bag catching means 3 is for catching the packaging bags a sequentially conveyed by the bag feeding conveyor 2 one by one. In this embodiment, as shown in FIG. 11 or FIG. The first bag capturing means 3A that captures and raises the packaging bags a that are sequentially transported one by one, and the packaging bag a that is captured by the first bag capturing means 3A as shown in FIG. It is comprised from the 2nd bag capture | acquisition means 3B for transferring to the bag arrangement | positioning part 5 provided adjacent to the one end side outer side of the width direction of the conveyor 2. As shown in FIG.

  The first bag capturing means 3A is provided on one end side in the width direction on the downstream side of the bag feeding conveyor 2, and, as shown in FIG. 12, two pairs of suction disks 7a, 7b and lifting / lowering means 8 for raising and lowering the suction boards 7a and 7b, and acts to pick up only one packaging bag a sent downstream by the bag feeding conveyor 2.

  The second bag catching means 3B is a suction cup provided on the front end side of the link mechanism 9 as shown in FIG. 13 in order to transfer the packaging bag a raised by the first bag catching means 3A to the receiving bag placement portion 5. 13 and an elevating mechanism 14 for elevating and lowering the link mechanism 9. And the 2nd bag capture | acquisition means 3B has positioned the packaging bag a received from 3 A of 1st bag capture | acquisition by the suction effect | action by the suction cup 13 above the bag arrangement | positioning part 5 by rotation accompanying the fall of a link mechanism. Then, it acts so that it may be mounted on the upper surface of the bag arrangement | positioning part 5 by the suction release by the suction cup 13.

  The bag placement part 5 is a part for placing a single packaging bag a captured by the bag capturing means 3, and the bag placement part 5 removes a single packaging bag a disposed on the bag placement part 5. The bag position correcting means 4 for correcting the position in the width direction or length direction of the packaging bag a is provided.

  As described above, in the bag feeding apparatus 1 according to the present invention, the packaging bags a are arranged one by one in the bag placement unit 5 and the bag position correcting means 4 rearranges the packaging bags a one by one in an accurate position. Therefore, rough arrangement of the packaging bag a by the bag supplier on the bag feeding conveyor 2 is possible.

  Specifically, as shown in FIG. 25 (1), even a chuck bag or a gusset bag may be roughly arranged on the bag feeding conveyor 2 and does not need to be accurately arranged in a sashimi shape. The flat bag or large bag provided in the above may be placed on the bag feeding conveyor 2 together with the bag bundle as shown in FIG. 25 (2), and any type of packaging bag can be used for general purposes. And if the packaging bag a conveyed downstream is detected by the bag front-end | tip detection part 16 provided in the downstream of the bag feeding conveyor 2, the bag conveyance motor 29 will stop intermittently and the bag capture | acquisition means 3 will be stopped. Thus, the sheet is transferred one by one to the bag placement unit 5 and placed, and the bag position correction means 4 repositions it at an accurate position.

  The bag position correcting means 4 includes first bag position correcting means 15A for correcting the position of the packaging bag a in the width direction, and second bag position correcting means 15B for correcting the position of the packaging bag a in the length direction. .

  As shown in FIG. 18, the first position correcting means 15A includes a lateral positioning pin 17 provided so as to protrude upward on both sides in the width direction and dotted in the length direction, and as shown in FIG. Extending / contracting means 18 (width adjusting left and right screw 18a and width adjusting motor 18b) for extending / contracting the distance in the width direction of the lateral positioning pin 17 is provided. Each time a single packaging bag a is placed on the bag placement portion 5, the width adjusting motor 18b is actuated to move the lateral positioning pins 17 inward, thereby reducing the separation distance. The packaging bag a is configured such that its position is corrected in the width direction. After the position correction in the width direction is performed, the width adjusting motor 18b is actuated to move the lateral positioning pin 17 to the outside and the separation distance increases, and accordingly, the separation distance in the width direction of the lateral positioning pin 17 also increases. Then, it is configured to return to the initial position.

  As shown in FIG. 18, the second position correcting means 15B includes a bag front positioning plate 19a and a bag rear positioning plate 19b that are provided so as to protrude upward on both sides in the length direction and extend in the width direction. 16, as shown in FIG. 16, the front bag positioning cylinder 19 </ b> A for reciprocating the front bag positioning plate 19 a in the length direction, and as shown in FIG. 15, the rear bag positioning plate 19 b is moved back and forth in the length direction. And a post-bag positioning cylinder 19B. Each time a single packaging bag a is placed on the bag placement portion 5, the pre-bag positioning cylinder 19A and the post-bag positioning cylinder 19B are operated, and the length of the pre-bag positioning plate 19a and the post-bag positioning plate 19b is increased. The separation distance in the vertical direction is reduced, and the position of the packaging bag a is corrected in the length direction. After position correction in the length direction, the pre-bag positioning cylinder 19A and the post-bag positioning cylinder 19B are operated so that the pre-bag positioning plate 19a and the post-bag positioning plate 19b return toward the initial position. Has been.

  Furthermore, as shown in FIG. 14, the bag placement unit 5 has a lifting device 37 for raising the tip side of the bag placement unit 5 and holds one packaging bag a by the bag supply means 6A. At this time, by raising the front end side of the bag placement portion 5, the stroke of the bag supply pipe 38 of the bag supply means 6A can be further shortened, and the bag supply pipe 38 of the bag supply means 6A can reliably It is comprised so that the packaging bag a can be hold | maintained.

  The bag supply means 6 is for holding a single packaging bag a placed in the bag placement section 5 and feeding it to the bag gripping means g of the packaging machine P. A first bag supply means 6A for holding a single sheet of packaging bag a and a packaging bag a held by the first bag supply means 6A, and then delivering the packaging bag a to a bag gripping means (grip pair) g of the packaging machine P. 2 bag supply means 6B.

  As shown in FIG. 19, the first bag supply means 6A has a pair of bag supply pipes 38 that hold a single packaging bag a disposed in the bag placement portion 4 and rotate to have a vertical posture. The bag supply pipe 38 has a suction cup 39 for adsorbing the packaging bag a from the upper surface side at the lower end. In FIG. 19, reference numeral 44 denotes a reflector, 45 denotes a detection guide plate, and 46 denotes a detection auxiliary air pipe.

  As shown in FIG. 20 or FIG. 21, the second bag supply means 6B can be clamped to receive a single packaging bag a supported in a vertical posture by a pair of bag supply pipes 38 of the first bag supply means 6A. A pair of sandwiching plates 40 and an elevating mechanism 41 that allows the sandwiching plate 40 to be raised and lowered.

  Further, as shown in FIGS. 21 to 24, the bag supply means 6 has a height for correcting the height of the packaging bag a held in the vertical posture by the pair of sandwiching plates 40 of the second bag supply means 6B. A correction means 42 is provided. Since some of the packaging bags are short to long when gripped by the bag gripping means (grip pair) g as shown in FIG. 21, they are gripped by the bag gripping means (grip pair) g. Before being carried out, the packaging bag a held in the vertical posture by the pair of sandwiching plates 40 of the second bag supply means 6B is moved up and down to correspond to the packaging bags having different on-nail heights. Height correction means 42 is provided so that the gripping means (grip pair) g can grip the packaging bag a at a more appropriate height.

  The height correction means 42 is used to raise and lower the lifting mechanism 41 that lifts and lowers the pair of sandwiching plates 40 of the second bag supply means 6B and the pair of bag supply pipes 38 of the first bag supply means 6A that holds the packaging bag a. A rotary encoder for generating pulses, a pulse counter for counting pulses generated by the rotary encoder, a holding position of the packaging bag a by the pair of bag supply pipes 38 of the first bag supply means 6A, and the second bag supply means 6B. The sensor 43 detects the passage of the upper end side portion of the packaging bag a between the receiving positions by the pair of sandwiching plates 40 and a control unit for controlling them.

  The control unit counts while the sensor 43 detects the passage of the upper end side of the packaging bag a after the pair of bag supply pipes 38 of the first bag supply means 6A holds the packaging bag a and rises. Between the reference pulse number and the pair of bag supply pipes 38 of the first bag supply means 6A holding the packaging bag a and raising the sensor 43 while the sensor 43 detects the passage of the upper end side of the packaging bag a. The number of pulses counted is compared, and the vertical movement of the pair of sandwiching plates 40 of the second bag supply means 6B by the lifting mechanism 41 is controlled according to the comparison amount.

  More specifically, in the height correction means 42 of this embodiment, the height on the nail of the packaging bag a can be set by inputting to the panel between 25 to 47 mm above the nail (grip pair). It is configured.

  For example, when the upper part of the nail is set to 32 mm, as shown in FIG. 22, when the control unit detects the pair of bag supply pipes 38 of the first bag supply unit 6A by the sensor 43, the normal timing is compared with the reference pulse. And the amount of correction of the height of the packaging bag a held in the vertical posture by the bag supply pipe 38 is calculated. Then, the pair of sandwiching plates 40 of the second bag supply means 6B that has received the packaging bag a from the bag supply pipe 38 is raised and lowered within a range of ± 5 mm. In the case of 32 mm above the nail, when the correction amount is zero, the sandwiching plate 40 is not moved up and down horizontally, and when correction is required within a range of ± 5 mm up and down, by raising and lowering the sandwiching plate 40 accordingly, The packaging bag a can be supplied to the bag gripping means (grip pair) g at a desired accurate nail height.

  Further, for example, when the upper part of the nail is set to 25 mm, as shown in FIG. The deviation from the timing is measured, and the correction amount of the height of the packaging bag a held in the vertical posture by the bag supply pipe 38 is calculated. Then, the pair of sandwiching plates 40 of the second bag supply means 6B that has received the packaging bag a from the bag supply pipe 38 is raised and lowered within a range of ± 5 mm. At 25 mm above the nail, when the correction amount is zero, the pinch plate 40 is moved down by 7 mm, and when correction is necessary, the pinch plate 40 is lowered by that amount to obtain the desired accurate on-nail height. The packaging bag a can be supplied to the bag gripping means (grip pair) g.

  Further, for example, when the upper portion of the nail is set to 47 mm, as shown in FIG. 24, when the control unit detects the pair of bag supply pipes 38 of the first bag supply means 6A by the sensor 43, the comparison with the reference pulse is normal. The deviation from the timing is measured, and the correction amount of the height of the packaging bag a held in the vertical posture by the bag supply pipe 38 is calculated. Then, the pair of sandwiching plates 40 of the second bag supply means 6B that has received the packaging bag a from the bag supply pipe 38 is raised and lowered within a range of ± 5 mm. At 47 mm above the nail, when the correction amount is zero, the pinch plate 40 is moved up by 15 mm, and when correction is necessary, the pinch plate is raised by that amount, so that the desired height above the nail is obtained. The packaging bag a can be supplied to the bag gripping means (grip pair) g.

P Packaging machine 1 Bag feeding device a Packaging bag 2 Bag feeding conveyor 3 Bag catching means 3A First bag catching means 3B Second bag catching means 4 Bag position correcting means 5 Bag placement unit 6 Bag supply means 6A First bag supply means 6B 2nd bag supply means 7a, 7b Suction board 8 Lifting means 9 Link mechanism 10 Moving body (disk-shaped rotating body)
DESCRIPTION OF SYMBOLS 11 Stand 12 Intermittent rotating shaft 13 Suction cup 14 Lifting mechanism 15A 1st bag position correction means 15B 2nd bag position correction means 16 Bag tip detection part 17 Lateral positioning pin 18 Expansion / contraction means 19a Bag front positioning plate 19A Bag front positioning cylinder 19b After bag Positioning plate 19B Post-bag positioning cylinder 20 Conveyor width adjusting mechanism 21a, 21b Width adjusting screw 22a, 22b Screw receiving member 23 Movable stock guide 24 First conveyor belt 25a, 25b Fixed pulley 26 Second conveyor belt 27a, 27b Movable pulley 28a, 28b Width adjustment guide member 29 Bag transport motor 30 Bag transport drive pulley 31 Drive shaft (ball spline shaft)
32 Downstream pulley shaft 33 Fixed stock guide 34 Width adjustment motor 35 Width adjustment drive pulleys 36a, 36b Width adjustment sprocket 37 Lifting device 38 Bag supply pipe 39 Suction cup 40 Clipping plate 41 Lifting mechanism 42 Height correction means 43 Sensor 44 Reflector 45 Detecting guide plate 46 Detecting auxiliary air pipe g Bag gripping means (grip pair)

Claims (6)

  A bag feeding conveyor for sequentially transporting the packaging bags, a bag capturing means for capturing the packaging bags sequentially transported by the bag feeding conveyor one by one, and a single packaging bag captured by the bag capturing means And a bag supply means for holding a single packaging bag arranged in the bag arrangement section and supplying it to the bag gripping means of the packaging machine. A bag feeding device characterized by that.   The bag feeding apparatus according to claim 1, wherein the bag feeding conveyor has a conveyor width adjusting mechanism for adjusting a conveyor width.   The conveyor width adjustment mechanism is provided along the width direction of the bag feeding conveyor and is rotatable, and is attached to the width adjustment screw and is movable in the width direction as the width adjustment screw rotates. A screw receiving member, a movable stock guide movable in the width direction together with the screw receiving member, a fixed pulley provided on one end side in the width direction of the bag feeding conveyor and spanning a first conveyor belt, and the bag feeding A movable pulley provided on the other end side in the width direction of the conveyor and spanning a second conveyor belt, and the movable pulley is engaged with a width adjusting guide member provided on the screw receiving member. The bag feeding device according to claim 2, wherein the bag receiving device is configured to move in the width direction as the screw receiving member moves in the width direction.   The bag catching means receives a packaging bag captured by the first bag catching means and catches and raises the packaging bags sequentially conveyed by the bag feeding conveyor one by one. The bag supply according to any one of claims 1 to 3, further comprising a second bag catching means for transferring to the bag placement portion provided adjacent to the outer side of one end in the width direction of the bag conveyor. apparatus.   The bag supply device according to any one of claims 1 to 4, wherein the bag supply means includes height correction means for correcting the height of the packaging bag held in a vertical posture.   A packaging machine comprising the bag feeding device according to any one of claims 1 to 5.

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