JP2004026207A - Bag scrapping machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for separating a bag and the contents certainly without hindering the operation of a machine by adhesion of the bag on the periphery of a roller. <P>SOLUTION: The machine is provided with a feed roller part 30, a squeezing roller part 40 and a cutter 5, wherein a groove part 41f and 42f are provided extending in a direction crossing rotation center spindles 41a and 42a on the peripheries of a pair of squeezing roller 41 and 42 in the squeezing roller part 40. The bag B is conveyed along a conveying route R toward the downstream side with the feed roller part 30 and at almost the same time, is cut with the cutter 5. Further the bag B and the contents are separated with the squeezing roller part 40 and are collected in a collecting box 9a and 9b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bag-opening machine for opening bags in which liquid contents such as soup and soy sauce are sealed.
[0002]
[Prior art]
2. Description of the Related Art In recent years, a wide variety of products in which liquid contents are packaged (hereinafter referred to as "bagged products"), such as soup-like seasonings used in instant foods such as ramen, and soy sauce used as a seasoning for prepared foods, have been marketed. There are many in the market. When such a bagged product is produced at a factory, a defective product may be generated because the enclosed content becomes larger or smaller than a predetermined reference amount. In view of the problem of garbage disposal and the like, it is desirable to process bags and contents of defective products generated during production separately. Therefore, conventionally, the bagged product of the defective product was manually opened to separate the bag from the contents, but this operation is very complicated. Has been proposed.
[0003]
For example, a first roller unit composed of a pair of rollers provided with irregularities on the peripheral surface, and a second roller unit provided on the downstream side of the first roller unit and composed of a pair of rollers having a flat peripheral surface. (Hereinafter, referred to as “first unpacking machine”) has been proposed. In the case of the first bag-opening machine, a bag-packed product is sandwiched between a pair of rollers of the first roller unit, and the bag of the bag-packed product is crushed by unevenness provided on a peripheral surface. The bag-packed product obtained by crushing the bag is sandwiched by the second roller portion and the contents are squeezed out.
[0004]
As another example, a bag-opening machine provided with a cylindrical drum having a plurality of through holes formed in a peripheral surface and having a plurality of blades on an inner wall (hereinafter, referred to as a “second bag-opening machine”) is proposed. Have been. In the case of the second unpacking machine, bagged articles are put into the rotated drum. The loaded bags rotate with the drum and are pressed against the inner wall of the drum by the resulting centrifugal force. The pressed bagged product is cut by a plurality of blades provided on the inner wall of the drum, and the contents are discharged to the outside of the drum through the through hole by centrifugal force.
[0005]
As described above, it is possible to separate the packaged product into the bag and the contents by both the first bag opening machine and the second bag opening machine.
[0006]
[Problems to be solved by the invention]
However, in the case of using the first bag-opening machine, there is a case where the bag adheres to the peripheral surface of the roller constituting the second roller portion and is not peeled off. When the bag comes into close contact with the peripheral surface of the roller as described above, the operation of the first bag opening machine is hindered.
[0007]
Further, in the case of the second bag opening machine, small pieces of the bag may be generated by cutting the bag a plurality of times or by cutting the end of the bag. Since the small pieces are discharged to the outside of the drum together with the contents by centrifugal force, it is difficult to completely separate the small pieces from the contents.
[0008]
Accordingly, an object of the present invention is to provide a bag-opening machine capable of reliably separating a bag from contents without causing the bag to come into close contact with the peripheral surface of the roller and hindering operation.
[0009]
[Means for Solving the Problems]
The present invention has been made in view of the above circumstances, and a bag-opening machine according to the present invention is a bag-opening machine for opening a bag in which a liquid content is enclosed. Has a pair of feed rollers that are substantially parallel to each other, and a feed roller unit for conveying a bag sandwiched between the pair of feed rollers, and for cutting the bag conveyed by the feed roller unit. The cutter and the cutter are arranged on the downstream side of the feed roller portion with respect to the cutter, and when the bag cut by the cutter is sandwiched, the rotating shafts of the respective cutters are substantially aligned to squeeze out the contents in the bag. And a squeezing roller section having a pair of squeezing rollers in parallel.
[0010]
With such a configuration, a predetermined portion of the bag conveyed by the feed roller unit can be cut by the cutter, and no small pieces of the bag are generated, and the bag is squeezed by the squeezing roller unit. Thereby, the contents and the bag can be reliably separated. Moreover, since it has a simple structure as described above, it is possible to realize a bag-opening machine that can be easily cleaned by applying water from above.
[0011]
Further, on each peripheral surface of the pair of squeezing rollers, a groove forming portion for forming a groove in a direction intersecting with the rotation axis of the squeezing roller in a bag sandwiched between the pair of squeezing rollers, It may be extended in a direction crossing the rotation axis.
[0012]
With such a configuration, a groove is formed in the bag passing through the squeezing roller portion in a direction intersecting the rotation axis of the squeezing roller. The bag in which the groove is formed has an increased rigidity against an external force in a direction perpendicular to the longitudinal direction of the groove, so that the bag is easily peeled off from the squeezing roller and does not adhere.
[0013]
A plurality of the groove forming portions are arranged in parallel at a predetermined interval in the rotation axis direction, and a peripheral surface of the throttle roller between the groove formation portions adjacent in the rotation axis direction is formed flat. There may be.
[0014]
With this configuration, the bag sandwiched between the pair of squeezing rollers can be pressed substantially uniformly by the flat peripheral surface between the plurality of groove forming portions arranged in parallel, and the content of the bag can be improved. Almost everything can be squeezed out.
[0015]
Further, among the pair of squeezing rollers, the groove forming portion provided on one of the squeezing rollers has a ridge portion having a cross section substantially perpendicular to the extending direction and having a shape protruding from the peripheral surface, and the other. The groove forming portion provided in the squeezing roller has a valley portion whose cross section substantially perpendicular to the extending direction has a concave shape with respect to the peripheral surface so as to be fitted to the ridge portion of the one squeezing roller. May be.
[0016]
With such a configuration, the bag is sandwiched and pressed between the ridge portion of one of the squeezing rollers and the valley portion of the other squeezing roller fitted to the ridge portion. The groove is surely formed in the direction crossing the rotation axis of the squeezing roller.
[0017]
Further, among the pair of squeezing rollers, a groove forming portion provided on one of the squeezing rollers has a ridge portion having a cross section substantially orthogonal to the extending direction and having a shape protruding from the peripheral surface, The groove forming portion provided on the other squeezing roller has a valley portion that is depressed with respect to the squeezing portion. May have a valley having a cross section substantially perpendicular to the peripheral surface, and a ridge having a shape protruding from the peripheral surface.
[0018]
With this configuration, the bag is sandwiched between the ridge and the valley of one of the squeezing rollers and the valley and the ridge of the other squeezing roller fitted to the ridge and the valley, respectively. Since the bag is inserted and pressed, a groove is formed in the bag in a direction crossing the rotation axis of the squeezing roller, as described above.
[0019]
The ridges and valleys may have a substantially trapezoidal cross section substantially perpendicular to the extending direction.
[0020]
With such a configuration, a more appropriate groove can be formed in the bag inserted between the corresponding ridges and valleys.
[0021]
Further, at least a peripheral surface of the pair of aperture rollers may be made of a metal material.
[0022]
With such a configuration, the mechanical resistance of the squeezing roller portion is improved, and the attached content is easily removed.
[0023]
Further, each of the pair of squeezing rollers may have a diameter of about 80 mm and a length in the rotation axis direction of about 135 mm.
[0024]
When the bag is inserted between the feed roller and the pair of squeezing rollers, the larger the diameter of the squeezing roller is, the easier the squeezing is performed. Relative to the feed roller unit, the bag may not be properly conveyed from the feed roller unit to the squeeze roller unit. Therefore, with the above-described configuration, the bag can be properly transported from the feed roller unit to the squeezing roller unit, and the transported bag can be appropriately sandwiched between the pair of squeezing rollers. .
[0025]
Further, each of the pair of feed rollers has two rollers having the same diameter and provided coaxially at a predetermined interval, and the cutter cuts the bag to be conveyed substantially along the conveying direction. To this end, the blade may be arranged between the two rollers so that the blade crosses the bag conveyance path.
[0026]
With such a configuration, the bag conveyed by the feed roller unit can be reliably cut substantially in the conveying direction, and small pieces mixed into the contents due to the cutting do not occur.
[0027]
Further, a hopper for guiding a bag to the feed roller unit may be further provided on the upstream side of the feed roller unit.
[0028]
With such a configuration, the bag can be appropriately guided to the feed roller portion, and an appropriate portion of the bag can be cut later by the cutter.
[0029]
Further, a funnel may be further provided below the squeezing roller section to guide the contents that are squeezed and dropped by the squeezing roller section downward.
[0030]
With such a configuration, it is easy to collect the contents squeezed out of the bag.
[0031]
Further, a guide tool for guiding the bag whose contents have been squeezed by the squeezing roller unit in the downstream direction of the conveyance may be further provided on the downstream side of the squeezing roller unit in the conveying direction.
[0032]
With such a configuration, the bag and the contents separated by passing through the squeezing roller section can be reliably collected separately.
[0033]
The image forming apparatus may further include a driving unit for driving the feed roller unit and the squeezing roller unit, and a control unit for controlling driving of the driving unit.
[0034]
With such a configuration, the feed roller unit and the squeezing roller unit can be appropriately driven, and the bag opening process can be performed smoothly.
[0035]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of a bag opening machine according to the present invention. In FIG. 1, reference numeral 1 denotes the bag-opening machine. The bag-opening machine 1 includes a bag-opening machine main body 11 and a gantry 12 with casters on which the bag-opening machine main body 11 is mounted and fixed on an upper part. And a control box 13 provided on the back of the gantry 12 for controlling the operation of the bag opening machine main body 11.
[0036]
The unpacking machine body 11 includes a hopper 2, a feed roller unit 30, a squeeze roller unit 40, a cutter 5, a left side plate 60L and a right side plate 60R for holding them, and the feed roller unit 30 and a squeeze roller. A motor M for driving the unit 40 is mainly provided. The motor M is arranged on the back of the bag opening machine main body 11 and is operated by electric power supplied from a power supply (not shown). The number of rotations and the rotation torque of the motor M are controlled in accordance with an instruction from a control device stored in the control box 13.
[0037]
The left side plate 60L and the right side plate 60R are parallel to each other at a predetermined interval, and are erected on the upper part of the gantry 12. The hopper 2, the feed roller unit 30, the squeezing roller unit 40, and the cutter 5 are arranged between the left side plate 60L and the right side plate 60R as described later.
[0038]
FIG. 2 is a right side view schematically showing the arrangement of the hopper 2, the feed roller unit 30, the squeezing roller unit 40, the cutter 5 and the like in the bag opening machine body 11, and FIG. 3 shows the arrangement. It is a top view. As shown in FIG. 2, the hopper 2, the feed roller unit 30, and the squeezing roller 40 are transported between the left side plate 60L and the right side plate 60R and inclined toward the front side of the bag opening machine 1 with respect to a horizontal plane. They are arranged in this order along R.
[0039]
As shown in FIGS. 1 to 3, the hopper 2 is disposed at the most upstream position of the transport path R. The hopper 2 has a substantially rectangular shape in plan view, and has a receiving portion 2a on which a large number of bags B can be placed, and a projecting portion along one side of the front side of the substantially rectangular receiving portion 2a along the transport path R. And a guide portion 2b for guiding the bag B placed on the receiving portion 2a to the feed roller portion 30.
[0040]
A feed roller unit 30 is disposed near the guide unit 2b on the downstream side of the transport path R with respect to the guide unit 2b of the hopper 2. The feed roller unit 30 includes a pair of feed rollers 31, 32 having rotation center axes 31a, 32a substantially parallel to each other. As shown in FIG. 2, the feed rollers 31 and 32 are arranged such that the rotation center shafts 31a and 32a sandwich the transport path R from above and below and are symmetrically positioned with respect to the transport path R. Have been. The feed rollers 31, 32 are fixed to shafts 31b, 32b coaxial with the respective rotation center axes 31a, 32a, and both ends of the shafts 31b, 32b are rotatable by the left side plate 60L and the right side plate 60R, respectively. It is supported by.
[0041]
Both ends of the shaft 31b penetrate outward from the left side plate 60L and the right side plate 60R and protrude by a predetermined length, and a left end portion of the shaft 32b penetrates outward from the left side plate 60L to a predetermined length. It protrudes only. As shown in FIG. 3, two sprockets 31c and 31d coaxial with the shaft 31b are attached to the right end of the shaft 31b protruding from the right side plate 60R. A chain Cc is hung between a sprocket 31c provided outside and a sprocket Mc attached to the drive shaft of the motor M, and the feed roller 31 is interlocked with the rotation of the drive shaft of the motor M. It is designed to rotate.
[0042]
Synchronous gears 31e and 32e are attached to the left ends of the shafts 31b and 32b protruding from the left side plate 60L, respectively. The synchronous gears 31e and 32e are configured to rotate in synchronization with one rotation and rotate in reverse with each other. Therefore, when the motor M is driven, the feed rollers 31, 32 are synchronously driven to rotate in conjunction with the rotation of the drive shaft. The bag B sandwiched between the feed rollers 31 and 32 can be transported downstream along the transport path R.
[0043]
The left side plate 60L and the right side plate 60R are provided with cases 61L, 61R so as to surround the respective outer sides. The sprockets 31c, 31d are housed in the case 61L, and the synchronous gears 31e, 32e are provided in the case 61L. It is stored in 61R.
[0044]
As shown in FIG. 3, the feed roller 31 has two rollers 311 and 312 provided coaxially at a predetermined interval. The rollers 311 and 312 form a stepped cylindrical shape having the same large diameter and small diameter, and are arranged such that the large diameter sides are close to each other. Similarly, the feed roller 32 has two rollers 321 and 322 provided coaxially at the predetermined interval. The rollers 321 and 322 form a stepped cylindrical shape having the same large diameter and small diameter, and are arranged such that the large diameter sides are close to each other. The rollers 311 and 312 and the rollers 321 and 322 are knurled on the peripheral surface of a cylindrical portion having a large diameter. In the bag-opening machine 1 according to the present embodiment, the diameter of the large-diameter cylindrical portion of the rollers 311, 312, 321 and 322 is approximately 52 mm, and the diameter of the small-diameter cylindrical portion is approximately 40 mm. The length of the cylindrical portion forming the diameter in the rotation center axis direction is approximately 10 mm, and the length of the small diameter cylindrical portion in the rotation center axis direction is approximately 15 mm.
[0045]
As shown in FIGS. 1 to 3, a cutter 5 is disposed between the hopper 2 and the feed roller unit 30. The cutter 5 has its both ends positioned at the center in the longitudinal direction of the support rod 5a fixed to the left and right plates 60L and 60R, that is, between the rollers 311 and 312 provided at a predetermined interval. It is supported in a hanging state. The cutter 5 has a blade directed to the upstream side of the transport path R, and is provided so that the blade crosses the transport path R as shown in FIG. Therefore, the bag B transported along the transport path R by the feed roller unit 30 is cut by the cutter 5 substantially in the transport direction.
[0046]
As shown in FIG. 2, a squeeze roller unit 40 is disposed downstream of the transport path R with respect to the feed roller unit 30. The aperture roller section 40 includes a pair of aperture rollers 41, 42 having rotation center axes 41a, 42a substantially parallel to each other. The squeezing rollers 41, 42 are arranged such that the rotation center shafts 41a, 42a sandwich the transport path R from above and below and are symmetrically positioned with respect to the transport path R. It is separated by an appropriate distance to squeeze out the contents of the sandwiched bag B. The squeezing rollers 41, 42 are fixed to shafts 41b, 42b coaxial with the respective rotation center axes 41a, 42a, and both ends of the shafts 41b, 42b are rotated by the left side plate 60L and the right side plate 60R, respectively. Supported as possible.
[0047]
Both ends of the shaft 41b penetrate outward from the left side plate 60L and the right side plate 60R and protrude by a predetermined length, and a left end portion of the shaft 42b penetrates outward from the left side plate 60L to a predetermined length. It protrudes only. As shown in FIG. 3, a sprocket 41d coaxial with the shaft 41b is attached to a right application portion of the shaft 41b protruding from the right side plate 60R. A chain Cd is hung between the sprocket 41d and a sprocket 31d attached to the right end of a shaft 31b to which the feed roller 31 is fixed. Is designed to rotate.
[0048]
Synchronous gears 41e and 42e are attached to the left ends of the shafts 41b and 42b protruding from the left side plate 60L, respectively. The synchronous gears 41e and 42e are configured to rotate in synchronization with one of the rotations and rotate in the other direction in reverse. Therefore, the bag B sandwiched between the squeezing rollers 41 and 42 can be transported downstream along the transport path R.
[0049]
The sprocket 41d is housed in the case 61R together with the aforementioned sprockets 31c and 31d, and the synchronous gears 41e and 42e are housed in the case 61L together with the aforementioned synchronous gears 31e and 32e.
[0050]
Groove forming portions 41f and 42f are formed on the peripheral surfaces of the squeezing rollers 41 and 42 for forming grooves in the bag B sandwiched therebetween in the direction intersecting with the respective rotation center shafts 41a and 42a. ing. FIG. 4 is a sectional view showing a section of the drawing rollers 41, 42 cut along the rotation center axes 41a, 42a in order to explain the configuration of the groove forming portions 41f, 42f, and FIG. FIG. 4B shows a roller 41, and FIG. FIG. 5 is an enlarged schematic view showing a part of the groove forming portions 41f and 42f.
[0051]
As shown in FIGS. 4A and 5, the groove forming portion 41 f has a trapezoidal cross section with respect to the circumferential surface of the squeezing roller 41, and a ridge portion extending in the circumferential direction of the squeezing roller 41. 41g, and a valley portion 41h having the trapezoidal cross section and extending in the circumferential direction. The ridges 41g and the valleys 41h are alternately arranged on the peripheral surface of the aperture roller 41 in the direction of the rotation center axis 41a.
[0052]
On the other hand, as shown in FIGS. 4B and 5, the groove forming portion 42f provided on the peripheral surface of the squeezing roller 42 has a ridge portion 42g having substantially the same shape as the ridge portion 41g, and the valley portion 41h. And a valley portion 42h having substantially the same shape. The ridges 42g and the valleys 42h are alternately arranged in the direction of the rotation center axis 42a on the peripheral surface of the squeezing roller 42, and the ridges 42g are formed in the valleys provided on the squeezing roller 41. The valley portion 42h is fitted to a ridge portion 41g provided on the squeezing roller 41.
[0053]
Further, the peripheral surface portion 41j of the aperture roller 41 between the ridge portion 41g and the valley portion 41h and the peripheral surface portion 42j of the aperture roller 42 between the ridge portion 42g and the valley portion 42h have flat shapes. It is. Further, the peripheral surfaces of the squeezing rollers 41 and 42 including the ridge portions 41g and 42g, the valley portions 42g and 42h, and the peripheral surface portions 41 and 42j are made of a metal material such as stainless steel.
[0054]
The squeezing rollers 41 and 42 included in the bag opening machine 1 according to the present embodiment have a diameter of 80 mm and a length in the rotation center axis direction of 135 mm. The ridges 41g and 42g have a width of 1 mm at the upper end, a width of 4 mm on the peripheral surface, and a height of 2 mm from the peripheral surface to the upper end. The valleys 41h and 42h have an opening width of 4.5 mm, a bottom width of 1 mm, and a depth from the opening to the bottom of 2 mm. Further, the distance between the ridge 41g and the valley 41h and the distance between the ridge 42g and the valley 42h, in other words, the space between the groove forming parts 41f and 42f is 10 mm.
[0055]
As shown in FIGS. 1 to 3, on the downstream side of the conveyance path R with respect to the squeezing roller section 40, a plate-shaped guide 7 having a rectangular outer shape and a lattice-shaped inside is provided. Along the transport route R. The guide member 7 is a member for guiding the bag B separated from the contents by the squeeze roller section 40 to the front side.
[0056]
As shown in FIG. 2, a funnel 8 for guiding the contents squeezed out of the bag B by the squeezing roller unit 40 into a predetermined lower area is attached to a lower portion of the bag opening machine body 11. .
[0057]
Next, the operation of the unpacking machine 1 configured as described above will be described. As shown in FIG. 1, when the unpacking machine 1 according to the present embodiment is used, a collection box 9 a is provided below the guide 7 on the front side of the unpacking machine 1. A collection box 9b is also provided below the main body 11.
[0058]
First, by driving the motor M, the feed rollers 31 and 32 are driven to rotate in conjunction with each other, and the aperture rollers 41 and 42 are driven to rotate in conjunction with each other. In this state, the bag B sent from the hopper 2 toward the feed roller unit 30 is guided to the feed roller unit 30 along the transport path R appropriately by passing through the guide unit 2b of the hopper 2 on the way. . The bag B guided to the feed roller unit 30 is sandwiched between a pair of feed rollers 31 and 32 that rotate in opposite directions.
[0059]
At the same time as the bag B is sandwiched between the pair of feed rollers 31 and 32, the downstream end of the bag B is brought into contact with the blade of the cutter 5. Then, as the sheet is transported downstream by the feed roller unit 30, the bag B is cut into two by the abutted cutter 5.
[0060]
The bag B cut into two and conveyed downstream by the feed roller unit 30 is sandwiched between a pair of squeeze rollers 41 and 42 provided in the squeeze roller unit 40. The contents of the bag B inserted between the squeezing rollers 41 and 42 are squeezed out mainly by being pressed by the flat peripheral surface portions 41j and 42j of the squeezing rollers 41 and 42. The squeezed contents fall below the squeeze roller section 40, are collected in a predetermined range by the funnel 8, and are collected in the collection box 9b.
[0061]
In the process of being conveyed to the downstream side of the conveyance path R while being sandwiched between the squeeze rollers 41 and 42, the bag B is pressed between the ridge 41g of the squeeze roller 41 and the valley 42h of the squeeze roller 42. The pressing roller 41 is pressed between the valley portion 41h of the squeezing roller 41 and the ridge portion 42g of the squeezing roller 42. Therefore, a plurality of grooves are formed in the bag B.
[0062]
FIG. 6 is a perspective view schematically showing a state after the bag B cut by the cutter 5 is squeezed by the squeezing roller unit 40. As shown in FIG. 6, a plurality of grooves Ba corresponding to the groove forming portions 41f and 42f provided on the squeeze rollers 41 and 42 are formed in the bag B. In the case of the present embodiment, the groove Ba is formed in the bag B so as to have a longitudinal direction in a direction crossing the rotation center axes 41a and 42a of the squeezing rollers 41 and 42 and along the transport path R. ing. The bag B in which such a groove Ba is formed has increased rigidity in a direction orthogonal to the longitudinal direction of the groove Ba.
[0063]
Therefore, the bag B separated from the contents by the squeezing roller unit 40 is peeled off without adhering to the peripheral surfaces of the squeezing rollers 41 and 42, and is collected via the guide 7 arranged on the downstream side of the transport path R. It falls into the box 9a and is collected.
[0064]
As described above, when the bag opening machine 1 according to the present embodiment is used, the bag B can be prevented from sticking to the peripheral surfaces of the squeezing rollers 41 and 42, and can be easily peeled off. Further, almost all contents can be squeezed out of the bag B sandwiched between the squeezing rollers 41 and 42, and the collection rate of the contents increases.
[0065]
In addition, even if the bag B contains relatively high viscosity contents such as mayonnaise and miso in addition to relatively low viscosity contents such as soup and soy sauce, the bag B adheres to the squeezing rollers 41 and 42. It is possible to squeeze out almost all of the contents and separate and collect the bag B and the contents without the need to carry out. Further, the same effect can be obtained for a so-called continuous bag product in which a plurality of bags B are connected in series.
[0066]
The shapes of the groove forming portions 41f and 42f provided in the squeeze rollers 41 and 42 are not limited to those shown in FIG. FIG. 7 is a cross-sectional view showing another shape of the groove forming portion provided on the aperture roller. As shown in FIG. 7, the squeezing roller 43 is provided with a plurality of ridges 43g having the same shape as the ridges 41g in the direction of the rotation center axis 43a. The squeezing roller 44 forming a pair with the squeezing roller 43 is provided with a plurality of valleys 44h having the same shape as the valleys 41h in the direction of the rotation center axis 44a. It is formed to fit with the ridge 43g.
[0067]
In the case of the squeezing roller section having the squeezing rollers 43 and 44 having such a configuration, a plurality of grooves can be formed in the bag B in the same manner as described above, and the same effect as described above can be obtained. Obtainable.
[0068]
Furthermore, if the shape of the peripheral surface of the squeezing roller is such that the rigidity of the bag B molded based on the shape via the squeezing roller can be increased in a direction intersecting the rotation center axis direction of the squeezing roller, Other shapes may be formed.
[0069]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, a bag can be provided which can isolate | separate a bag and a content reliably, without a bag sticking to the peripheral surface of a roller and obstructing driving | operation.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of a bag opening machine according to the present invention.
FIG. 2 is a right side view schematically showing an arrangement of a hopper, a feed roller unit, a squeezing roller unit, a cutter, and the like in the bag opening machine main body.
FIG. 3 is a plan view illustrating an arrangement of a hopper, a feed roller unit, a squeezing roller unit, a cutter, and the like in the unpacking machine main body.
FIG. 4 is a cross-sectional view showing a cross section of the squeezing roller cut along a rotation center axis for explaining a configuration of a groove forming portion.
FIG. 5 is an enlarged schematic view showing a part of a groove forming portion.
FIG. 6 is a perspective view schematically showing a state after a bag cut by a cutter is squeezed by a squeezing roller unit.
FIG. 7 is a cross-sectional view illustrating another shape of a groove forming portion provided on the aperture roller.
[Explanation of symbols]
1 Bag opening machine
2 Hopper
5 cutter
7 Guide
8 Funnel
11 Unpacking machine body
13 Control box
30 feed roller
31, 32 feed roller
40 Squeeze roller
41, 42, 43, 44 Squeeze roller
41f, 42f Groove forming part
41g, 43g Ridge
41h, 44h Tanibe
41j Peripheral part
311, 312, 321, 322 roller
B bag
Ba groove
M motor
R transport route

Claims (13)

In a bag opening machine for opening a bag in which a liquid content is enclosed,
It has a pair of feed rollers whose rotation axes are substantially parallel to each other, a feed roller unit for conveying a bag sandwiched between the pair of feed rollers, and a bag conveyed by the feed roller unit. A cutter for cutting and a cutter arranged on the transport downstream side of the feed roller unit with respect to the cutter, and when the bag cut by the cutter is inserted, squeezing out the contents in the bag. And a squeezing roller section having a pair of squeezing rollers whose rotation axes are substantially parallel to each other. On each peripheral surface of the pair of squeezing rollers, a groove forming portion for forming a groove in a direction intersecting the rotation axis of the squeezing roller in a bag sandwiched between the pair of squeezing rollers is provided. The bag opening machine according to claim 1, wherein the bag opening machine extends in a direction intersecting with the axis. A plurality of the groove forming portions are arranged side by side at predetermined intervals in the rotation axis direction, and a peripheral surface of the squeezing roller between the groove formation portions adjacent in the rotation axis direction is formed flat. The bag opening machine according to claim 2, characterized in that: The groove forming portion provided in one of the pair of squeezing rollers has a ridge portion having a cross section substantially perpendicular to the extending direction and having a shape protruding from the peripheral surface, and the other squeezing roller. The groove forming portion provided on the squeezing roller has a valley portion whose cross section substantially perpendicular to the extending direction is concave with respect to the peripheral surface so as to be fitted to the ridge portion of the one drawing roller. The bag-opening machine according to claim 2 or 3. Among the pair of squeezing rollers, the groove forming portion provided on one of the squeezing rollers has a ridge portion having a cross section substantially perpendicular to the extending direction and having a shape protruding from the peripheral surface, and A valley portion having a concave shape, and a groove forming portion provided on the other squeezing roller is substantially extended in the extending direction so as to fit into each of the ridge portion and the valley portion of the one squeezing roller. The bag opening machine according to claim 2 or 3, wherein a cross section orthogonal to the bottom surface has a valley portion having a shape depressed with respect to the peripheral surface, and a ridge portion having a shape projecting with respect to the peripheral surface. . The bag opening machine according to claim 4, wherein the ridge and the valley have a substantially trapezoidal cross section substantially orthogonal to the extending direction. The bag-opening machine according to any one of claims 1 to 6, wherein at least a peripheral surface of the pair of squeezing rollers is made of a metal material. The bag-opening machine according to any one of claims 1 to 7, wherein each of the pair of squeezing rollers has a diameter of about 80 mm and a length in a rotation axis direction of about 135 mm. Each of the pair of feed rollers has two rollers having the same diameter and provided coaxially at a predetermined interval, and the cutter is configured to cut the bag to be conveyed substantially along the conveyance direction. 9. The bag unpacking machine according to claim 1, wherein a blade is disposed between the two rollers so as to cross a bag conveyance path. The bag-opening machine according to any one of claims 1 to 9, further comprising a hopper for guiding a bag to the feed roller unit on the upstream side of the feed roller unit. The funnel for guiding the contents which are squeezed by the squeezing roller portion and fall down is further provided below the squeezing roller portion, any one of claims 1 to 10 characterized by the above-mentioned. Unpacking machine. 12. A guide tool for guiding a bag whose contents have been squeezed by the squeezing roller section downstream of the squeezing roller section in the conveying downstream direction is further provided. A bag-opening machine according to any one of the above. 13. The solution according to claim 1, further comprising: a driving unit for driving the feed roller unit and the squeezing roller unit; and a control unit for controlling driving of the driving unit. Bag machine.

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