JP2016016621A - Manufacturing system for bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing system for a bag which is simple and can improve productivity.SOLUTION: A system 1 manufactures a bag provided with a bottom while advancing a cylindrically shaped belt-like member in a longer direction. The system 1 is equipped with: a cutting device 32b for cutting the belt-like member; a feeding device 32c which pulls out the cut belt-like member and accelerates an advance speed; an injection device 2 which injects a starch onto an opened portion of the belt-like member near a front end thereof when the front end of the pulled-out belt-like member reaches a position to be detected; an inner bonding device 3 which bonds an inner patch at a position where the starch is injected; and an outer bonding device 6 which bonds an outer patch from above the opened portion folded together with the inner patch and closes.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a system for manufacturing bags. More particularly, the present invention relates to a system for manufacturing a bag having a bottom portion.

Patent Document 1 discloses a large bag that accommodates a plurality of small bags filled with toilet rolls, kitchen towels, tissue paper, and the like. This bag is manufactured from a semi-finished product in which a sheet is formed into a cylindrical shape and flattened. The semi-finished product of such a bag is a trapezoidal part on both side walls, with one side wall in the vicinity of the end part being lifted and forming a triangular-shaped development part with the tops facing outward at both corners of the part to be lifted. Wrapped to form
For example, glue is transferred from the U-shaped or gate-shaped letterpress to both of the developed portions. The shape of the transferred glue is a U-shape or a gate shape, which is almost the same shape as the letterpress, so as to straddle both development parts.
Next, an inner patch is affixed to the pasted portion. Thereafter, the trapezoidal part is folded together with the inner patch, and finally the outer patch is pasted from the folded back.
The outer patch is, for example, transferred with a letterpress so as to leave a frame-like part on the outer edge.

  Patent Document 2 discloses an apparatus for discharging glue to a flap of a cylindrical body. This glue bag does not include an inner patch and an outer patch, but is used to fold the glued flap and close the bottom. This apparatus conveys the cylindrical body with the planned closing end portion opened, and discharges glue to the planned closing end portion from the nozzle of the paste discharge gun. The flap having the planned sealing portion is glued in an upright state opened to both sides so as to be substantially perpendicular to the cylindrical body. This device includes a bag detection device that detects that the cylinder has reached the region where the glue discharge gun is installed, and a control device that operates the glue discharge gun in response to a detection signal from the bag detection device. . The control device stores in advance the timing for opening and closing the valves of the glue discharge gun, and opens and closes the necessary valves among a number of valves according to the dimensions of the planned closing end.

JP 2003-182767 A JP 2012-176499 A

  In a bag manufacturing system, if the paste is transferred with a letterpress for gluing, the glued member (that is, the inner patch) may stick to a roller or the like with the letterpress. Is low. Furthermore, there are many members that require maintenance, such as a relief roller and a roller that supplies glue thereto, and maintenance is complicated.

  In addition, defects such as the position where the inner patch is attached or not attached are occurring inside the bag that is folded and closed with the outer patch, so that the problem is visible from outside the bag. Hard to find and hard to find.

Accordingly, an object of the present invention is to provide a bag manufacturing system that is simple and has high productivity.

(1) The bag manufacturing system of the present invention is a system for manufacturing a bag having a bottom while a belt-shaped member having a flat cylindrical body is advanced in the longitudinal direction, and cutting the belt-shaped member. Device, feeding device for accelerating and feeding a cylindrical member formed by cutting the strip-shaped member in the advancing direction, bottom opening device for opening the front end of the fed cylindrical member, and vicinity of the front end of the cylindrical member Is a sensor for jetting that detects the arrival at the set position, an jet device that jets glue to an open part near the front end of the cylindrical member based on the detection of the sensor, and the glue An inner sticking device for sticking an inner patch at a sprayed position; and an outer sticking device for attaching and closing the outer patch from above the inner patch and the tubular member folded back on the inner patch. It is set to.

(2) In such a bag manufacturing system, the outer patch application device presses a roller for transferring glue over the entire width of a belt-like sheet to be an outer patch, and paste is applied to the entire surface of one side of the sheet. It is preferable that the sheet is transferred and the other surface of the sheet is sucked and supported, then cut to a predetermined length, and the cut outer patch is pressed against a cylindrical member and attached.

(3) The inner sticking device sucks and supports the vicinity of the front and rear ends to be the inner patch on the upper surface of the upper surface of the sheet while the inner sticking device advances the belt-like sheet in the longitudinal direction, It is preferable that the sucked and supported sheet is cut into a predetermined length to form an inner patch, and the formed inner patch is pressed against the opened portion of the cylindrical member by a vacuum cylinder and pasted.

(4) A detection device for detecting information on a sticking position of the pasted inner patch, and information on a sticking position for detecting that the tubular member on which the paste has been ejected reaches a set position is acquired. Sensor for acquiring position information from the detection device based on detection of the sensor, position information acquisition means obtained from the acquisition means, and pasting position registered in advance It is preferable that the information processing apparatus further includes a determination unit that determines whether there is a defect in the position where the inner patch is applied based on the information.

In the embodiment, the acquisition means for position information corresponds to step 4 (see FIG. 8).
In the embodiment, steps 5 to 11 (see FIG. 8) correspond to the determination unit.

(1) Since the bag manufacturing system of the present invention applies paste by spraying, there is no occurrence of problems caused by contact such that the inner patch sticks to the relief roller for transferring the paste. Further, since members for transfer such as a letterpress roller and a roller for supplying glue to it are unnecessary, the system is simple and maintenance related thereto is not required.
Further, the strip-shaped member is cut, the cylindrical member obtained by the cutting is accelerated in the traveling direction, and a gap is provided between the front end of the strip-shaped member that follows. Then, the presence or absence of the vicinity of the front end of the cylindrical member is detected, and glue is injected. For this reason, it is possible to perform highly accurate paste injection with a simple system.

(2) Further, the outer patch application device presses a roller for transferring glue over the entire width of the belt-like sheet to be the outer patch, transfers the glue to the entire surface of one side of the sheet, and the other side of the sheet If the surface is suction-supported, cut to a predetermined length, and the cut outer patch is pressed against the cylindrical member for pasting, paste is applied to the strip-shaped sheet before cutting. Since it is applied, it is easy to apply glue on the entire surface. And since it cuts with suction support, the blade and the outer patch are not caught by glue. Furthermore, since the outer patch supported by suction is pressed against the cylindrical member and attached, the outer patch can be attached without wrinkles.
And when filling the completed bag with the contents, the peripheral edge of the outer patch is not separated from the side wall of the bag, and the peripheral edge is difficult to peel off from the bottom of the bag, so the strength of the bag is high.

(3) Further, the inner sticking device sucks and supports the vicinity of the front and rear ends to be the inner patch on the upper surface of the upper surface of the sheet while the belt-like sheet is advanced in the longitudinal direction, and the sucked and supported sheet. Is cut into a predetermined length to form an inner patch, and the formed inner patch is pressed against the opened part of the tubular member by a vacuum cylinder and attached. The patch can be supported and affixed without being loosened in the front-rear direction.

(4) A detection device for detecting information on a sticking position of the pasted inner patch, and information on a sticking position for detecting that the tubular member on which the paste has been ejected reaches a set position is acquired. Sensor for acquiring position information from the detection device based on detection of the sensor, position information acquisition means obtained from the acquisition means, and pasting position registered in advance If it further comprises determination means for determining the presence or absence of a defect in the position of applying the inner patch based on the information, the position of applying the inner patch before closing with the outer patch is acquired as position information. It is easy to find defects. In addition, even if the inner patch is closed, it is easy to identify a bag having a defect in the application of the inner patch or a bag having such a possibility.

FIG. 1 is a block diagram showing an embodiment of a system for manufacturing a bag of the present invention. 2A is a schematic diagram showing an embodiment of the hardware configuration of the present invention, FIG. 2B is a schematic diagram showing an example of the data structure of the acquired location information, and FIG. 2C is an example of the data structure of the registered location information. FIG. FIG. 3 is a schematic side view showing the entire apparatus for manufacturing a bag. FIG. 4 is an enlarged side view of the inner sticking device of FIG. FIG. 5 is a schematic process diagram showing how the inner patch is attached to the cylindrical member. 6 is an enlarged top view of a portion showing the inner sticking device of FIG. FIG. 7 is a flowchart showing an embodiment of a program for performing injection. FIG. 8 is a flowchart showing an embodiment of a program for determining the suitability of the position where the inner patch is applied. FIG. 9 is a schematic side view showing an embodiment of a process of attaching an outer patch.

First, an outline of a system for manufacturing bags (hereinafter simply referred to as a system) will be described with reference to the block diagram of FIG. This system 1 advances the strip-shaped member T which made the cylindrical body flat, cut | disconnects with the cutting device 32b, and accelerates the cylindrical member 20 (refer FIG. 5) cut | disconnected with the feed device 32c. Then, the front end of the accelerated cylindrical member 20 is opened by the bottom opening device 28 (see FIG. 4). Next, the sensor 9 for injection detects that the vicinity of the front end of the cylindrical member has reached the position set for injection. Based on the acquired information acquired by the acquisition means 10, the paste is injected from the injection device 2 to the open portion 23 (see FIG. 5) of the cylindrical member 20. The inner patch 21 (see FIG. 5) is pasted to the portion where the glue is sprayed by the inner pasting device 3.

  Further, the system 1 acquires information on the pasting position (hereinafter simply referred to as position information) that the cylindrical member 20 to which the inner patch 21 is attached has reached a set position for detecting the pasting position. This is detected by the sensor 4b. Based on the acquisition of the position information by the acquisition means 4 for position information, the information on the position where the inner patch is applied is captured from the detection device 4a. By comparing the position information with the position information registered in advance by the determination means 5, a defect in pasting is determined. Then, the flap is glued and the bottom is closed. Finally, the outer patch 22 (see FIG. 5) is pasted with the outer pasting device 6 to form the bottom of the bag.

  The position information in this embodiment is information regarding the position of the inner patch 21 with respect to the tubular member 20, and an image of the tubular member 20 itself to which the original inner patch 21 from which position information is extracted in image processing is attached. Contains information.

Next, the hardware configuration of the system 1 will be described with reference to FIG. The system 1 of this embodiment uses a computer. The computer includes a CPU 11 (central processing unit). The CPU 11 is connected to a nonvolatile memory 12 such as a hard disk or a ROM (read only memory) and a volatile memory 13 such as a RAM (random access memory), and a control device 14 is constituted by them. The control device 14 is connected with an injection sensor 9, an injection device 2, a detection device 4a, and a position information sensor 4b.
In the non-volatile memory 12, a program 15a for executing the determination means 3 (see FIG. 1) and the position information acquisition means 4 (see FIG. 1) and an injection acquisition means 10 (see FIG. 1) are executed. The program 15b to be stored is stored. Further, the nonvolatile memory 12 stores position information 16 of the inner patch 21 that is pasted at an appropriate position.
In addition, if the location information 17 acquired by the acquisition means 4 for location information is stored in the non-volatile memory 12, it is possible to grasp the application state of the inner patch in a bag that does not exist at the time of shipment, Traceable product management is possible.

FIG. 3 shows an overall view of an apparatus for manufacturing a bag. The bag making machine 30 includes a printer (not shown) (on the right side of the drawing), a tuba 31 that forms a belt-like sheet sent from the printer into a belt-like member having a flat cylindrical shape, and the belt-like member. A cutting device 32b for cutting the member T into a predetermined length, and a feeding device 32c for accelerating the cut cylindrical member 20.
Downstream of the cutting device 32b (left side in the figure), the above-described injection sensor 9, the injection device 2, the inner application device 3, the detection device 4a, the position information sensor 4b, and the outer application device 6 are provided. . On the downstream side of the outer sticking device 6, there is provided an aligning and conveying device 35 for stacking and feeding the manufactured paper bags.
An inner supply device 33 and an outer supply device 34 for supplying the inner patch and the outer patch, respectively, are further provided.

A portion upstream of the inner sticking device 3 of the bag making machine 30 (right side in FIG. 3) will be described in order with reference to FIG. The upstream side of the bag making machine 30 includes a drawing roll 32a for pulling out the band-shaped member T flowing from the tuba 31, a cutting device 32b for cutting the band-shaped member T into a predetermined length, and a cut cylinder A feeding device 32c that accelerates and feeds the cylindrical member 20 downstream, a horizontal stripe roll 32d that folds the cylindrical member 20 in a lateral direction, an oblique stripe roll 32e that obliquely folds, and an opening cylinder 27 are provided. Yes. The lower vertical knife roll 32f facing the oblique muscle roll is provided with a cutter (vertical knife) for making a vertical cut at the tip of the tubular member 20 before opening. A pinch roll 32g is provided between the cutting device 32b and the feeding device 32c. These roll groups 39 are driven by a motor M. These roller groups 39 rotate continuously.

  The cutting device 32b is composed of a pair of rolls, and is provided so as to sandwich the upper and lower surfaces of the band-shaped member T between the respective peripheral surfaces. One of the rolls is provided with a cutting blade, and the cutting is performed by pressing the blade against the other roll.

  The feeding device 32c includes a pair of rolls that are driven to rotate in opposite directions. The cylindrical member 20 is sent out while being sandwiched between the upper and lower surfaces between the rolls. Note that one roll may be driven and the other driven.

  The inner patch supply device 33 includes a holding device 33a for holding a kraft paper raw material roll 36 in a rotatable and replaceable manner. The apparatus further includes a control device 33b for setting the speed of the belt-like paper drawn from the apparatus, the rotation speed of the large cylinder 37 (described later), adjustment with the preceding and following processes, and performing control based on the settings. ing.

  The inner sticking device 3 includes a large cylinder 37 that supports the cylindrical member 20, expands its end, and serves as a base when the inner patch 21 (see FIG. 5) is stuck. Above the large cylinder 37, a vacuum cylinder 38 that sucks and holds the front and rear ends of the inner patch 21 is rotatably provided with a gap that allows the cylindrical member 20 to be sandwiched between it and the large cylinder 30. ing. On the upstream side of the vacuum cylinder 38, a bottom opening device 28 and an opening cylinder 27 that open the tip end side of the cylindrical member 20 sent from the roller group 39 into a substantially hexagonal shape are provided.

As shown in FIG. 5, due to the bottom opening device 28 and the opening cylinder 27 (see FIG. 4), the front end of the cylindrical member 20 has trapezoidal protrusions 25, 25 symmetrical to the opposite side walls 24a, 24b. Wrap to form. Specifically, while raising the upper side wall 24a in the vicinity of the opening 19 at the front end, raising the side wall 24a while forming triangular development portions 26 and 26 having apexes outward at both corners of the raised portion. The back surface is folded back so as to abut against the same side wall 24a so that the inner surface of the portion is exposed to the outside. Reference numeral 23 in the figure indicates a portion that is folded back to have a substantially hexagonal outline.
In addition, marks 18 and 18 are printed in advance on the developing units 26 and 26 by a printing machine (not shown). The mark 18 is used to determine the presence or absence of the inner patch 21.

  Returning to FIG. 4, on the downstream side of the vacuum cylinder 38, the binder 40 that grips the vicinity of the tip of the cylindrical member 20 with a gripping member (not shown) provided in the large cylinder and the gripping are released. A rotating closing spring 41 is provided. The timing for raising and releasing can be determined by a cam or the like. Further, a feed cylinder 42 for feeding the tubular member 20 to the outer sticking device 6 is provided at the lower portion of the large cylinder 37.

An injection device 2 is provided between the vacuum cylinder 38 and the bottom opening device 28. The injection device 2 injects glue onto the development portions 26 and 26 (see FIG. 5) of the open portion 23 of the cylindrical member 20.
In the present embodiment, the injection sensor 9 detects that the front end of the opened portion 23 (see FIG. 5) has reached the position to be injected, and the injection device 2 injects glue based on the detection of the sensor 9. To do. The sensors 9 are provided as a pair on both sides of the injection device 2 (see FIG. 6). As shown in FIG. 6, glue is supplied from the tube to the injection device 2, and the supplied glue is injected from the injection nozzle 7 on the air flow of pressurized air. The injection nozzle 7 is provided with a nozzle head 8 that opens and closes a supply path for glue and pressurized air. For example, an electromagnetic valve or the like is used as a device for operating the nozzle head ON / OFF.
In this embodiment, two injection nozzles are provided, but one or three or more may be used.

  The sensor 9 is a magnetic sensor. Since the bags are flowing at intervals, a change occurs in the magnetic amount (magnetic flux density, etc.) between the paper bag and the rotating rotor group of the metal feeding device 32c (see FIG. 1). It is detected that the front end of the open portion 23 (see FIG. 5) has reached the position to be ejected, using the change in which the detected magnetic amount becomes small. In addition, as a sensor which detects the space | interval of a bag, you may use a laser beam (photo sensor) or another conventionally well-known sensor.

  More specifically, as shown in the flowchart of FIG. 7 and the block diagram of FIG. 1, the CPU 11 reaches the front end of the portion 23 (see FIG. 5) opened by the injection sensor 9 (see FIG. 1). When detected, information on the arrival is acquired by the acquisition means 10 for injection (see FIG. 1) (S1). Next, based on the acquisition, the valve of the nozzle head 8 is opened, and paste is injected from the injection device 2 (S2). When the detection is not performed (S1), the sensor 9 stands by until a state change occurs.

  The mode of spraying such as the direction of the spray nozzle 7 (see FIG. 6), the spray speed, and the spray amount is determined in advance so that the shape in which the paste is applied by spraying has a predetermined spray pattern. In this embodiment, the paste is sprayed from all the spray nozzles 7 at a time during a predetermined time. In order to apply the paste to the range of the rectangular pattern as shown by the two-dot chain line in FIG. 5, the spray nozzle 7 (see FIG. 6) is arranged along the pattern. The jetting sprays fine spot-like glue almost uniformly on the above-mentioned range.

In addition, when the spray nozzle is arranged so as to follow the paste application pattern, the paste can be sprayed all at once when the cylindrical member reaches the spray position, so that the paste can be applied all at once.
As yet another example, the injection timing may be controlled. For example, the injection nozzle 7 is arranged in the sky through which a portion to be injected of the cylindrical member passes. When the portion to be sprayed comes under the spray nozzle 7, the paste is sequentially sprayed and the paste is applied to the range of the pattern.
Further, the spraying speed of some of the spray nozzles 7 (see FIG. 6) is increased, and the sprayed glue is blown off with a substantially predetermined trajectory and dropped to the vicinity where the application of glue far from the spray nozzle 7 is planned. It may be applied to the range of the pattern. In this case, the injection nozzle 7 is concentrated at the substantially center of the pattern, and the outward injection is performed from there.
These simultaneous injection, injection timing control, and glue blowing may be used in combination according to the paste application pattern.
Such injection patterns are gathered together in the injection pattern database 48 (see FIG. 2a) together with the required glue pressure, injection time, etc., and stored in the non-volatile memory 12. For example, the database 48 registers a plurality of patterns such as alternating lines and points and alternating long lines and short lines as ejection patterns. The necessary injection pressure and the like are stored as the thickness of the line and the diameter of the points. Further, as the length of the line, necessary injection pressure, injection time, and the like are stored for each traveling speed of the bag.

Returning to FIG. 6, the vacuum cylinder 38 is a cylindrical member, and an opening is formed in a part of its peripheral surface. In the opening, segments 38c and 38d, which are claw-shaped members, are provided. A plurality of suction holes 38a and 38b are formed at the base of the segment 38c. These suction holes 38a, 38b are parallel to the rotation axis on the peripheral surface of the vacuum cylinder 38,
It is provided in two rows before and after the rotation direction.

More specifically, a plurality of segments 38c extend rearward from the front end (lower side in FIG. 6) of the opening. The segment 38 c has a curved bar shape that substantially follows the outer peripheral surface of the vacuum cylinder 38. The aforementioned front end hole 38a is provided at the base of the front end segment 38c.
On the other hand, a segment 38d at the front end extends in the front direction from the rear end (the upper side in FIG. 6) of the cutout portion. The front and rear end segments 38c and 38d are arranged to be staggered. The rear end hole 38b described above is provided at the base of the rear end segment 38d.
Of these suction holes, a hole 38a (a lower hole in the figure) arranged in the front row sucks the front end of the inner patch 21 and the back surface thereof. The rear row of holes 38b sucks and supports the vicinity of the rear end of the inner patch 21.

The front end segment 38c, together with the front end hole 38a, is movable with respect to the vacuum cylinder 38 so as to approach or move away from the rear end side. When the front end segment 38c is moved, the front end segment claw can be inserted deeply or shallowly between the rear end segment claws, and the wall in which the two rows of holes 38a and 38b are formed. Or the distance between bars can be narrowed or widened.
Thereby, when manufacturing a bag with a different bottom size, the distance between the front and rear end holes 38a and 38b can be changed even if the length of the inner patch is different. A cylindrical surface formed by the segments 38c and 38d while the length of the front and rear ends of the inner patch 21 is sucked and supported by the holes 38a and 38b at the front and rear ends, and the back surface portion of the inner patch 21 between the holes is formed at any length. Can be supported. Then, the inner patch can be pressed against the tubular member 20 by the segments 38c and 38d.

  A cutter 38e is provided above the vacuum cylinder 38. The cutter 38e cuts the belt-shaped inner patch supplied from the inner patch supply device. The cutting is performed on the vacuum cylinder 37 by sucking the front end of the inner patch 21 and the portion that will become the rear end after cutting through the front and rear suction holes 38a and 38b. For this reason, the inner patch 21 can be cut without loosening.

  The inner patch 21 whose front and rear ends are sucked and supported by the vacuum cylinder 38 rolls on the circumferential surface of the large cylinder 37. For this reason, it can overlap and affix in the state which stretched the inner patch 21 on the cylindrical member 20 with glue. The vacuum cylinder 38 and the large cylinder 37 are synchronized by gear meshing or the like.

  Returning to FIG. 4, the detection device 4 a is provided above the large cylinder 37 and downstream (left side) of the vacuum cylinder 38. The detection device 4a is a device that acquires image information such as a CCD camera. Then, after the inner patch is attached, the attaching position is acquired as image information 17a (for example, see FIG. 2a). The image information 17a is acquired when the position information sensor 4b detects that the inner patch 21 has reached the position where the cylindrical member 20 should start acquisition, that is, the imaging area of the CCD camera. This is performed by the means 4 and is taken into the volatile memory 13. The position information sensor 4b is provided in a frame near the detection device 4a.

Next, processing executed in the system 1 will be described with reference to the flowchart of FIG. 8 and the block diagram of FIG.
When the CPU 11 (see FIG. 2) detects a signal that the inner patch 21 (see FIG. 5) reaches a preset position and the position information sensor 4b has reached, the CPU 11 (see FIG. 2) uses the detected information for the position information. Is obtained by the obtaining means 4 (S3).
When detection information is acquired by the acquisition unit 4, image information is taken into the acquisition unit 4 from the detection device 4a (S4).
The CPU 11 performs processing for confirming the presence / absence of the mark 18 printed on the developing unit (S5).
Next, the presence or absence of the inner patch 21 (see FIG. 5) is indirectly confirmed based on the presence or absence of the mark 18 (see FIG. 5) (S6). Specifically, by detecting the mark 18, it is confirmed that the inner patch 21 is not attached, and in other cases, it is confirmed that the inner patch 21 is present.

When the inner patch 21 is present, the CPU 11 (see FIG. 2) performs processing for extracting information related to the position of the inner patch 21 in the tubular member 20 from the acquired image information (S7). Specifically, the position information 17 relating to the distance from the front edge and both side edges of the cylindrical member 20 to the periphery of the inner patch 21 attached is extracted.
Next, the previously registered position information 16 is called from the nonvolatile memory 12 (S8).
The called position information 16 is compared with the acquired position information 17 (S9). If the acquired position information 17 is within a predetermined error range with respect to the registered position information 16, it is determined that there is no problem (S10). Information indicating that the pasting position is appropriate may be stored in the nonvolatile memory 11. In that case, the information may be stored with an identification number (hereinafter referred to as ID) for each bag. Then, together with the extracted position information 17, the acquired image information 17 a may be associated with the ID and stored in the nonvolatile memory 12.

An example of the data structure of the position information 17 is shown in FIG. The data structure 49 includes an ID 49a attached to each bag, a distance 49b from the front end edge of the cylindrical member 20 to the peripheral edge of the inner patch, a distance 49c from the right edge of the cylindrical member to the peripheral edge of the inner patch, and from the left edge. It consists of a distance 49d to the periphery of the inner patch. These symbols 49b, 49c, 49d correspond to the position information 17 extracted from the image information.
Further, FIG. 2c shows the data structure of the position information 16 registered in advance. The data structure 50 includes a pattern ID 50a, a distance 50b from the front edge, a distance 50c from the right edge, and a distance 50d from the left edge. These symbols 50b, 50c, and 50d correspond to the position information 16 extracted from the previously acquired image information. A plurality of registered location information 16 are stored in accordance with the size and type of bags to be manufactured.

In addition, you may use the inclination of an inner patch as positional information to acquire. Further, instead of using the inclination, for example, the distance from the left edge to the left peripheral edge of the inner patch may be acquired from two different positions.
Further, the turning of the inner patch may be determined. For example, the degree of turning is acquired as a ratio with respect to an appropriate area of the inner patch, and the ratio is compared with a threshold value registered in advance.

  In the present embodiment, the error range is set to 3% or less. Specifically, the registered position information 17 (see FIG. 2) and the distance data from the inner patch, which is the acquired position information 16, that is, the values shown in FIGS. 2b and 2c are subtracted, and the absolute value is obtained as the position information. The value divided by 16 is set to 0.03 (threshold) or less. Other known methods may be adopted as a method for calculating such an error range.

On the other hand, if the error range is exceeded or if it is confirmed in step S7 that there is no inner patch 21 (see FIG. 5), it is determined that there is a problem (S12).
When the failure is determined, for example, an alarm is displayed on the screen provided in the control device 14 (see FIG. 2), a warning sound is emitted, a lamp is lit, or the like is performed in combination. Also good. Further, an ID is attached to the defective position information 16 and stored in the nonvolatile memory 11. Furthermore, the image information at that time may be stored in the nonvolatile memory 11 with an ID. Then, the defective bag is removed from the line so that the system 1 (see FIG. 1) does not stop. This sampling is performed automatically. It may be removed manually.

  In FIG. 9, the schematic side view of an outer sticking apparatus is shown. The outer sticking device 6 includes a transfer device 43 that transfers a glue by pressing a roller 43d with glue applied to a belt-like sheet U to be an outer patch, and an opposite surface of the sheet U to which the glue is attached. And a suction feeding device 44 that feeds out while supporting the suction. The roller 43d presses over the entire width of the sheet U, and transfers the glue to the entire surface of the sheet.

  The transfer device 43 has an adhesive roller 43b in which the vicinity of the lower end is immersed in the adhesive reservoir 43a, an adhesive roller 43b to which adhesive is attached, an intermediate roller 43c that receives adhesive from the adhesive roller 43b, and a transfer roller that is glued by the intermediate roller 43c. 43d. The width of the glue of the transfer roller 43d is set to be equal to or larger than the width of the sheet U.

  The suction feeding device 44 is a vacuum conveyor and is conventionally known. The feeding device 44 includes an attaching table 44a and a suction belt 44b that moves on the upper surface of the attaching table 44a. Fine holes (not shown) are formed in the suction belt 44b, and air is sucked into the suction device (not shown) through the holes.

Next, a rotary cutter 45 provided with a blade 45a for cutting the supported sheet U into a predetermined length is provided. The outer patch 22 obtained by cutting is supported by the suction roller 46 on the non-glued side surface, and the glued side surface is further flapped on the inner patch 21 affixed to the tubular member 20. 25, 25 are folded and pasted (see FIG. 5). The cylindrical member 20 is placed on the peripheral surface of the transport roller 47. The outer patch 22 and the cylindrical member 20 are sandwiched and stuck between the suction roller 46 and the conveying roller 47.
For example, since the rollers are rotating using a rotating gear with a known pitch, their rotation can be synchronized.
The fold line of the flap 25 may be provided at a position including the inner patch, and the flap 25 may be folded together with the inner patch 21.

The gas used for the injection device 2 is a pressurized gas such as compressed air. Further, the paste may be pressurized and sprayed from the spray nozzle without using the compressed gas.
In addition to the rectangular shape, the pattern to which the paste is applied is, for example, a pattern that forms four substantially circular shapes at points corresponding to the four corners of the inner patch 21 (see FIG. 5), a dotted shape, or a linear shape.

  In the above embodiment, the functions shown in FIG. 1 are realized by using the CPU 11 and the programs 15a and 15b (see FIG. 2). However, a part or all of them may be realized by a logic circuit.

  Moreover, although the tip part of the cylindrical member 20 is detected by the position information sensor 4b, a mark may be printed on the cylindrical member 20 in advance and the mark may be detected.

As the sensors used for the ejection sensor 9 and the position information sensor 4b, conventionally known sensors such as optical and electromagnetic sensors can be used. And each acquisition means has acquired the state change of the information obtained by these sensors. For example, from ON to OF generated in the sensor
The state change such as ON from F or OFF is acquired.

  Examples of the adhesive used for the bonding include a vinyl acetate polymer aqueous emulsion, glue, or ethylene vinyl acetate (ethylene vinyl acetate copolymer, EVA).

The sheet material used for the tubular member, the inner patch and the outer patch is a material having high strength, strong tension and elasticity, and hardly stretched, especially a paper material or a resin material (laminate) used for packaging. And kraft paper is particularly preferable.
Further, a synthetic resin layer may be coated on the outer surface of the sheet material. As the synthetic resin layer, polypropylene (including biaxially oriented propylene (OPP), unstretched polypropylene (CPP), etc.), nylon, polyethylene (including linear low density polyethylene (LLDPE), etc.), polyethylene terephthalate, etc. A synthetic resin is used.

DESCRIPTION OF SYMBOLS 1 System 2 Injection apparatus 3 Inner sticking apparatus 4 Acquisition means 4a for position information Detection apparatus 4b Detection sensor 5 for position information 5 Determination means 6 Outer sticking apparatus 7 Injection nozzle 8 Nozzle head 9 Sensor 10 for injection 10 Acquisition means for injection 11 CPU
12 Non-volatile memory 13 Volatile memory 14 Control device 15a Program 15b Program 16 Registered position information 17 Acquired position information 17a Acquired image information 18 Mark 19 Opening 20 Tubular member 21 Inner patch 22 Outer patch 23 Open part 24a Side wall 24b Side wall 25 Projection piece 26 Expanding portion 27 Opening cylinder 28 Bottom opening device 30 Bag making machine 31 Tuba 32a Drawer roll 32b Cutting device 32c Feeding device 32d Horizontal bar roll 32e Oblique barb roll 32f Vertical female roll 32g Pinch roll 33 Inner supply unit 33a Holding Device 33b Control device 34 Outer supply device 35 Alignment transport device 36 Raw material roll 37 Large cylinder 38 Vacuum cylinder 38a Suction hole (front end)
38b Suction hole (rear end)
38c segment (front end)
38d segment (rear end)
38e Cutter 39 Roll group 40 Binder 41 Rotating closing spring 42 Feed cylinder 43 Transfer device 43a Adhesive reservoir 43b Adhesive roller 43c Intermediate roller 43d Transfer roller 44 Suction feed device 44a Pasting base 44b Suction belt 45 Rotary cutter 45a Blade 46 Suction roller 47 Transport cylinder 48 Database 49 Acquired data structure 49a ID
49b Distance from front edge 49c Distance from right edge 49d Distance from left edge 50 Registered data structure 50a Pattern ID
50b Distance from the front edge 50c Distance from the right edge 50d Distance T from the left edge Band-shaped member U (with the cylindrical body flattened) Band-shaped sheet

(1) The bag manufacturing system of the present invention is a system for manufacturing a bag having a bottom while a belt-shaped member having a flat cylindrical body is advanced in the longitudinal direction, and cutting the belt-shaped member. An apparatus, a feeding device for accelerating and feeding a cylindrical member formed by cutting the strip-shaped member in the advancing direction, a bottom opening device for opening a front end of the fed cylindrical member, and a front end of the cylindrical member A sensor for injection that detects that the vicinity reaches a set position, an injection device that injects glue to an open part near the front end of the cylindrical member based on detection of the sensor, and the glue There an inner attachment device pasting inner patch in position injection from said top of the inner patch and the tubular member folded back thereon, comprises an outer attachment device closed paste outer patch, before The inner sticking device sucks and supports the vicinity of the front and rear ends to be the inner patch on the upper surface of the sheet while a belt-like sheet is advanced in the longitudinal direction thereof, and the sucked and supported sheet has a predetermined length. An inner patch is formed by cutting, and the formed inner patch is pressed against a portion where the tubular member is opened by a vacuum cylinder and pasted .

(2) A second aspect of the bag manufacturing system of the present invention is a system for manufacturing a bag having a bottom part while a belt-shaped member having a flat cylindrical body is advanced in the longitudinal direction, and the belt-shaped member A cutting device that cuts the strip-shaped member, a feeding device that accelerates and feeds the cylindrical member formed in the advancing direction, a bottom opening device that opens the front end of the fed-out cylindrical member, and the cylinder Sensor for detecting that the vicinity of the front end of the cylindrical member reaches a set position, and an injection device for injecting glue to an open part near the front end of the cylindrical member based on the detection of the sensor And an inner sticking device for sticking the inner patch at a position where the glue is sprayed, and an outer sticking device for attaching and closing the outer patch from above the inner patch and the tubular member folded back on the inner patch. Cage, the outer patch sticking device, pressed against the roller for transferring the glue over the entire width of the belt-like sheet to be the outer patch, transferring the glue on the entire surface of one surface of the sheet, the glue is attached sheet the opposite side of with feeding with suction supported by vacuum conveyor, cut the sheet to the suction support the above in Jo Tokoro length, the cut outer patch, paste pressed against the tubular member It is characterized by being.

(3) the inner sticking apparatus, while advancing the strip-shaped sheet in its longitudinal direction, the vicinity of front and rear ends to the inner patch of the upper surface of the sheet by suction supported on a vacuum cylinder, the suction supporting sheets It is preferable that the inner patch is formed by cutting into a predetermined length, and the formed inner patch is pressed against the opened portion of the tubular member by a vacuum cylinder and is attached.

Claims (4)

A system for manufacturing a bag having a bottom while a strip-shaped member having a flat cylindrical body is advanced in the longitudinal direction,
A cutting device for cutting the strip-shaped member;
A feeding device that accelerates and feeds a cylindrical member formed by cutting the strip-shaped member in the traveling direction;
A bottom opening device for opening the front end of the cylindrical member to be sent out;
A sensor for injection for detecting that the vicinity of the front end of the tubular member reaches a set position;
Based on the detection of the sensor, an injection device that injects glue to an open part near the front end of the cylindrical member;
An inner sticking device for sticking an inner patch at a position where the glue is sprayed;
A bag manufacturing system comprising: the inner patch and an outer sticking device that attaches and closes an outer patch from above the tubular member folded over the inner patch. The outer patch application device is
Press the roller that transfers the glue over the entire width of the belt-like sheet to be the outer patch, transfer the glue to the entire surface of one side of the sheet,
After sucking and supporting the other side of the sheet, it is cut into a predetermined length,
The bag manufacturing system according to claim 1, wherein the cut outer patch is pressed against a cylindrical member and attached. The inner sticking device is
While the belt-like sheet is advanced in the longitudinal direction, the vicinity of the front and rear ends to be the inner patch on the upper surface of the sheet is sucked and supported on the vacuum cylinder,
The suction supported sheet is cut into a predetermined length to form an inner patch,
The bag manufacturing system according to claim 1 or 2, wherein the molded inner patch is pressed by a vacuum cylinder against an opened portion of the tubular member. A detection device for detecting information of affixing position of the affixed inner patch;
A sensor for acquiring information on a pasting position for detecting that the tubular member to which the glue has been sprayed has reached a set position;
Based on the detection of the sensor, an acquisition means for position information that acquires information on the pasting position from the detection device;
The apparatus further comprises determination means for determining the presence / absence of a defect in the application position of the inner patch based on information on the application position obtained from the acquisition means and information on the application position registered in advance. The bag manufacturing system according to any one of 2 and 3.

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