JP2002326295A - Bag making apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag making apparatus constituted so that a lateral sealer, a cooler and a cutter are respectively returned to the respective origin positions of them by driving respective servo motors at the time of alteration of a bag size and then automatically moved to the respective positions corresponding to the bag size after alteration. SOLUTION: At the time of alteration of the bag size, the lateral sealer 19 and a seal part cooler 20 are returned to the respective origin positions thereof near to the cutter 22 by driving the servo motor 36 to be stopped temporarily and succeedingly separated from the cutter 22 by the reversal driving of the servo motor 36 to be moved until they arrive at positions separated from the origin positions by the moving distance. At this point of time, the servo motor 36 is stopped to lock the lateral sealer and the cooler at respective stations.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a continuous sealed flat cylinder formed by a continuous packaging film and intermittent feeding, and a line to be cut in a direction perpendicular to the film feeding direction at the time of intermittent stop is sealed. While applying the horizontal seal so that it becomes the center of the width, the horizontal seal part is cooled on the downstream side,
Furthermore, regarding a bag making device that cuts the center of the seal width of the horizontal seal portion on the downstream side, particularly, the horizontal seal device, the seal portion cooling device, and the cutting device are automatically driven by each servo motor when the bag size is changed. The present invention relates to a bag making apparatus that moves to each position corresponding to a changed bag size.

[0002]

2. Description of the Related Art Conventionally, when changing the bag size, the above-described bag-making apparatus is arranged such that, from the horizontal sealing apparatus and the cooling apparatus, the apparatus closer to the cutting apparatus is used in order from the cutting apparatus. By rotating an attached handle, the pinion is meshed and rotated with a common fixed rack and moved to move to and fix each position corresponding to the changed bag size. However, when the bag size is changed so that the interval between the horizontal seals is, for example, twice or more, when one device is moved to the upstream side, the device located on the upstream side of the one device is obstructed. Therefore, it is necessary to perform a plurality of times to avoid the disturbing device on the upstream side and move the one device to the upstream side and fix it at the position corresponding to the changed bag size, or When moving one device to the upstream side, a device located upstream of the one device becomes an obstacle, so that all devices located upstream, including the device that becomes an obstacle, are largely avoided to the upstream side. In this case, it is necessary to sequentially move the device downstream from the downstream device and fix it to a position corresponding to the changed bag size, which is troublesome. In addition, since the handle is sequentially turned and moved from the downstream device to adjust the memory of the positioning plate of each device to a required value of the memory scale, it is troublesome.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned point, and has a structure in which a continuous sealed flat cylinder is formed by a continuous wrapping film and is intermittently fed. The horizontal seal is applied so that the cut line is at the center of the seal width in the direction perpendicular to the direction, the horizontal seal portion is cooled on the downstream side, and the seal width center of the horizontal seal portion is further cut on the downstream side. A bag device, wherein the horizontal sealing device, the sealing portion cooling device, and the cutting device automatically move to each position corresponding to the changed bag size when the bag size is changed. The purpose is.

[0004]

According to a first aspect of the present invention, a continuous sealed flat cylinder is formed by a continuous packaging film and intermittently travels. When the intermittent stop is performed, the cut line of the continuous sealed flat cylinder is set at the center of the seal width. A plurality of horizontal sealing devices for applying a horizontal seal so as to provide a horizontal seal or a horizontal seal adjacent to a scheduled cut line of a continuous closed flat cylinder at an upstream station, and a horizontal seal provided by the horizontal seal device At least one cooling device for cooling the portion is provided at the midstream station, and a cutting device for cutting the predetermined cutting line to form a bag having a predetermined shape is provided at the downstream station, wherein the horizontal sealing device and the sealing portion cooling are provided. The device and the cutting device are configured to operate a horizontal sealing function, a cooling function, and a cutting function by a common vertical movement transmitting means. A horizontal sealing device and the sealing portion cooling device are moved to respective positions corresponding to the bag size based on the cutting device and fixed, and run under the continuous sealed flat cylinder. The ball screw is fixed so that it cannot rotate in parallel with the direction, and the ball nuts screwed to the ball screw are screwed by the number corresponding to the transverse sealing device and the seal portion cooling device, and the corresponding devices are continuously connected. Each ball nut is pivotally supported by the lower frame part of the closed flat cylinder, and each ball nut is rotated by each servo motor provided in the frame part of the corresponding device, and the corresponding horizontal sealing device and cooling device correspond to the bag size When the bag size is changed, each servomotor is driven as required to calculate each horizontal sealing device and each cooling device from their respective origin positions. Characterized in that it is configured to move to the positions corresponding to the bag size after change that is intended to provide a bag-making apparatus.

The second invention of the present application is directed to forming a continuous sealed flat cylinder with a continuous wrapping film and running intermittently. When the intermittent stop is performed, the horizontal sealing is performed so that the cut line of the continuous sealed flat cylinder is at the center of the seal width. Or a plurality of horizontal sealing devices for applying a horizontal seal adjacent to a scheduled cut line of a continuous closed flat cylinder at an upstream station, and a cutting device that cuts the scheduled cut line to form a bag having a predetermined shape At the downstream station, the horizontal sealing device and the cutting device are configured to operate a horizontal sealing function and a cutting function by a common vertical motion transmission means, and the plurality of horizontal sealing devices are used when the bag size is changed. A bag making apparatus having a configuration in which it is moved to and fixed at each position corresponding to the bag size based on the cutting apparatus, and the bobbin is provided below the continuous closed flat cylinder in parallel with the running direction. And the ball nut screwed into the ball screw is screwed by the number corresponding to the horizontal sealing device, and the ball nut is pivotally connected to the lower frame portion of the continuous closed flat cylinder of each device. Supported, each ball nut is rotated by each servo motor provided in the frame portion of each corresponding device, and the corresponding horizontal sealing device is moved to each position corresponding to the bag size, It is characterized in that each servo motor is driven as required at the time of change, so that each horizontal seal device is moved to each position corresponding to the changed bag size calculated from each origin position. And a bag making apparatus.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a bag making method according to the present invention will be described with reference to FIGS. FIG. 1 is an overall perspective view of a bag making apparatus for carrying out the bag making method of the present invention. This bag making device is composed of a stand pouch pack P1
Are made in two rows. The bag making apparatus for a bag with a zipper changes the continuous packaging film F1 unwound from the raw roll R1 onto the film splicing roll 1, then on the turn bars 2 and 3, from horizontal running to vertical running, and then unwinds. The film F1a is fed out by the roll 4, cut into half width by the cutter 5, and then hung on the M plate 6 for changing the vertical feed to the horizontal feed again. The film F1b is caused to run horizontally below.

Subsequently, the bag front side film F1a and the bag rear side film F1b are hung on the accumulators 7 and 8, respectively. A pair of upper and lower film draw-out rolls 10 that run horizontally between the pair of upper and lower mating rolls 9 so that the inner surfaces of the bag rear side film F1b that runs horizontally on the lower side intersect and then intermittently run the packaging film by the bag length. The bag front side film F1a and the bag rear side film F are overlapped here.

On the other hand, in a space secured between the film F1a on the front side of the bag running on the upper part of the apparatus and the film F1b on the rear side of the bag running on the lower part of the apparatus on the upstream side of the film feed roll 10, the gusset material is used. The continuous gusset film F2, F3 unwound from the rolls R2, R3 is
Gusset film accumulators 11 and 12, respectively
And then fold it over two triangular plate formers 13 and 14 and fold the inside of the bag into a mountain fold to form two folds with half the width, and punch out small holes in accordance with the planned cut position by punches 15a and 15b. The two-fold gusset films F2 and F3 are sandwiched between both side edges of the bag front side film F1a and the bag rear side film F1b.

Subsequently, on the downstream side after being sequentially passed through the pair of upper and lower mating rolls 9 and the pair of upper and lower film feeding rolls 10, film feeding rolls 10, 24, and 25 are provided.
Jointly feed the film intermittently. Vertical heat sealers 16a, 16b, 1 for bottom seal of three stations
7a, 17b, 18a and 18b apply the bottom seal S1 to the same position of the edges of the bag front side film F1a and the bag rear side film F1b and the edges of the gusset films F2 and F3 on both sides three times, Then, the side heat sealers 19,... For the side seals of the four stations repeatedly apply the side seal S2 four times so that the cut line of the bag comes to the center of the seal width, and then the seals of the three stations are repeated. Cooling the side seal S2 part three times, and then a pair of slitters 21
Is cut at the center of the width, then the center of the seal width of the side seal S2 is cut by the cutter 22, and the stacker (not shown) is placed on the conveyor 23 for performing the stacking operation. Send out the stand pouch pack P.

[0010] In short, the bag making method using the bag making apparatus is a gusset in which continuous packaging films F1a, F1b are overlapped and folded in half, and then punched by punches 15a, 15b to punch out small holes in accordance with the positions to be cut. Vertical heat sealers 16a, 16b, 17a, 1 sandwiching films F2, F3
7b, 18a, and 18b apply a bottom seal S1 to form a continuous sealed flat tube and form film feed rolls 10, 24, 2
5, the horizontal sealing is performed by the four horizontal sealing devices 19,... Of the upstream station so that the cut line of the continuous sealed flat cylinder is at the center of the sealing width when the film feeding is stopped intermittently. , And three seal portion cooling devices 20 of the middle flow station, ...
The horizontal sealing portion is cooled by the cutting device 22, and the cut line is cut by the cutting device 22 of the downstream station, and the width of the film running by the pair of slitters 21 at the upstream position of the cutting device 22 is cut into two parts. A stand-shaped pouch pack is formed in two rows. In addition, the pair of slitters 21 is the horizontal heat sealer 1.
9 may be provided at an upstream position. Also, the slitter is
It may be a knife cutter or a guillotine cutter.

FIG. 2A is a cross-sectional view taken along the line IIa-IIa in FIG. 1 showing the horizontal sealing device 19 of the bag making device shown in FIG.
FIG. 2 (b) shows a seal portion cooling device 2 of the bag making device shown in FIG.
FIG. 2 is a sectional view taken along the line IIb-IIb in FIG. FIG.
As shown in (a) and (b), the horizontal sealing device 19 and the seal portion cooling device 20 are provided with a heat sealer 19a, 1 for performing horizontal sealing.
Except for the seal unit cooling device boxes 20a and 20b for cooling the horizontal seal portion with the 9b and the horizontal seal portion, they have the same mechanical configuration. The heat sealer 19b is covered with a Teflon (registered trademark) tape or the like so that the film does not stick. The common mechanical structure will be described. A lower frame 28 supported at both ends so as not to float on the common frames 26 and 27 and to be movable in the line direction of the apparatus, and an upper frame 29 facing the upper side of the lower frame 28 in parallel.
A pair of left and right rods 30a, 30b engaged with both ends of the lower frame 29 so as to be able to move up and down, and capable of lifting both ends of the upper frame 29 and being engaged with the upper frame 29 so as to be able to descend relatively. , 30a, 30b such that the rods 30a, 30b are movable in the line direction of the device.
The lower end of the rod 3 is intermittently engaged with the lower end of the rod 30b during heat sealing by an intermittent vertical movement device (not shown).
A pair of left and right common lifting rails 31 for lowering 0a, 30b
a, 31b, upper frame lifting springs 32a, 32b respectively wound around the rods 30a, 30b and elastically attached between the lower frame 28 and the upper frame 29 to urge the upper frame 29 in the lifting direction; The upper frames 30a and 30b are wound around the upper portions of the upper frames 29a and 30b, and are biased in a direction in which the biasing force can be adjusted by tightening the nuts 33a and 33b. Springs 34a, 34b to be urged and pinions 35b, 35b at both ends of a shaft 35a, which is provided on the lower frame 28 and extends in a horizontal direction perpendicular to the line direction of the device.
By fixing the pinion 35c and engaging the pinions 35b, 35c with common racks 35d, 35e provided from the common frames 26, 27, the lower frame 28 is moved to the position corresponding to the bag size in the apparatus line direction. And a lower frame perpendicularity maintaining device for precisely maintaining the perpendicularity of the frame 28 to the device line direction. The common elevating rails 31a and 31b are lowered at the timing of cutting, and accordingly, the heat sealers 19a and
The heat sealing by 19b and the cooling of the seal by the seal unit cooling boxes 20a and 20b are performed simultaneously with the cutting by the cutter. When the device is not operating, the common lifting rails 31a and 31b stop at the raised position, and
Film lifting devices (not shown) located on both sides of each heat sealer 19b lift the film and
The fusing by b is avoided.

Thus, the lower frame 28 of each horizontal sealing device 19 and the lower frame 28 of each sealing portion cooling device 20
Are servo motors 36 attached to each lower frame 28.
An automatic moving device is provided which moves in the device line direction when the bag size is changed using the as a driving source. In the automatic moving device, two ball screws 37a and 37b are fixed at both ends so as to be non-rotatable at positions extending from near the lower side of the film drawer roll 10 to near the lower side of the cutting device 22 so as not to rotate (not shown). And seven ball nuts 38a, 38b are respectively attached to the ball screws 37a, 37b.
Are screwed together, and each ball nut 38a, 38b is provided with a bracket 39a, 39b provided on the corresponding lower frame 28.
An endless timing belt 41a is wound around timing gears 40a and 40b pivotally supported by the ball nuts 38a and 38b, and a timing gear 42a coaxially fixed to the output shaft of the servo motor 36 and An endless timing belt 41b is wound around a timing gear 42b coaxially fixed to the ball nut 38b.

Thus, the vertical direction of the bag (the direction of the device line)
When changing the dimensions of the four horizontal sealing devices 19 shown in FIG.
The three seal unit cooling devices 20 are arranged such that the servomotors 36 of the downstream stations are sequentially driven or the servomotors 36 of all the stations are simultaneously driven, and as shown in FIG. It moves in the downstream direction of the line, detects the origin position of each device by a sensor (not shown), and temporarily stops. Four horizontal seal devices 19 and three seal cooling devices 20
Are located downstream of the sealing position or the cooling position for the smallest size bag. Subsequently,
As shown in FIG. 4, the four horizontal sealing devices 19 and the three sealing portion cooling devices 20 are sequentially driven by the servomotors 36 of the upstream stations or simultaneously by the servomotors 36 of all the stations, and the cutting devices 22 are driven. From the origin position by counting the pulses of a rotary encoder attached to each servomotor 36 and calculating the distance from each servomotor. When the moving distance reaches the moving distance assigned to the lower frame 28, the servomotor 36 is stopped and positioned at each station, and a locking device (not shown) attached to each lower frame 28 locks the common frame 26, 27. It has become. When the four horizontal seal devices 19 and the three seal portion cooling devices 20 move in the downstream direction of the device line, the lower frame perpendicularity maintaining device precisely maintains the perpendicularity of the lower frame 28 to the device line direction. When a computer (not shown) for controlling the bag making device receives a change in bag size and a movement switch signal, the four horizontal seal devices 19 and the three seal portion cooling devices 20 are all set to the origin once. After returning to the position, it moves to the position corresponding to the change in the bag size. In this case, four horizontal sealing devices 19 and three sealing portion cooling devices 20
May be simultaneously moved to the origin position so as to gather near the cutting device 22, or may be sequentially moved from the device closer to the cutting device 22 and stopped at the origin position. Further, the four horizontal seal devices 19 and the three seal portion cooling devices 20 may be moved at the same time so as to be separated from the cutting device 22 from the origin position, or may be sequentially moved from the upstream device. . 3, the distance each L1 ₀ from the four transverse sealing device 19 and cutting device 22 three sealing portion cooling unit 20 is moved so as to gather closer to near the cutting device 22, L2 _0, L3 _0, L4 _0, L5 _0, L6 _0, indicating the state of stopping at each home position of the L7 _0. In order to stop at each origin position, the servomotor is stopped using a signal of a sensor provided to be accurately positioned at each origin position. L1 ₀
Is set, for example, 10 mm smaller than the dimension of the minimum size bag in the apparatus line direction. L2 ₀ is twice the L1 _0, L3 ₀ is 3 times the L1 _0, L4 ₀ is four times that of L1 _0, L5 ₀ is 5 times the L1 _0, L6 ₀ is the L1 ₀ is 6 times, L7 ₀ is 7 times that of L1 _0. If the dimensions L1 ₀ is, for example, _{8cm, L1 0 = 12cm, L2} 0 = 24cm, L3 0 = 3
_{6cm, L4 0 = 48cm, L5} 0 = 60cm, L6 0 = 72cm, L
The 7 ₀ = 84cm. FIG. 4 shows that four horizontal seal devices 19 and three seal portion cooling devices 20 move away from the cutting device 22 and distances from the cutting device 22 are L1, L2, L3, L4, L5, and L6, respectively. , L7. If the size of the bag in which the size change is input is, for example, 12 cm in the device line direction, L
1 = 18 cm, L2 = 36 cm, L3 = 54 cm, L4 = 72 cm,
L5 = 90 cm, L6 = 108 cm, L7 = 126 cm.
Accordingly, the distance from the origin position of the four lateral sealing device 19 and three seal portion cooling unit 20 to move the position due to a change bag size, in order from the most downstream apparatus, L1-L1 _{0
= 6cm, L2-L2 0 =} 12cm, L3-L3 0 = 18cm, L4
_{-L4 0 = 24cm, L5-L5} 0 = 30cm, L6-L6 0 = 36
cm, the L7-L7 ₀ = 42cm. Four horizontal sealing devices 1
The number of drive pulses is given to each of the servo motors of the nine and three seal cooling devices 20, and the actual moving distance is counted by a rotary encoder (not shown) built in each servo motor. Stops driving.

After the four horizontal sealing devices 19 and the three sealing portion cooling devices 20 are locked at the respective stations according to the bag size change, the bag making device is operated.

In the bag making apparatus, since the heat seal shape of the three vertical heat sealers 16a, 16b, 17a, 17b, 18a, and 18b is a bottom seal shape capable of standing and is not a band-shaped heat seal shape, the bag size is not large. At the time of the change, it is necessary to replace with a corresponding size, and it is necessary to change the arrangement pitch and position in the apparatus line direction. In this case, it is assumed that an automatic moving device that moves in the device line direction when the bag size is changed by using a servomotor as a driving source is provided similarly to the horizontal sealing device 19 and the sealing portion cooling device 20 described above.

FIG. 5 is an overall perspective view of a bag making apparatus for carrying out a bag making method according to a second embodiment of the present invention.
This bag manufacturing apparatus is an apparatus for manufacturing a four-sided seal pack P2 with a zipper in two rows. FIG. 1 of the bag making apparatus shown in FIG.
1 in that the gusseted films F2 and F3 are sandwiched between both side edges of the bag front side film F1a and the bag rear side film F1b in the bag making apparatus shown in FIG. Vertical heat sealers 16a, 16b, 17a, 17b, 1
8a and 18b repeat the application of the bottom seal S1 to the same position of the edges of the bag front side film F1a and the bag rear side film F1b and the edges of the gusset films F2 and F3 on both sides three times. In the bag making apparatus shown in FIG. 5, two zipper strips F4, in which the inner surfaces of the web are not welded to each other and the male meshing portion and the female meshing portion are meshed with each other.
F5 is sandwiched at the center of the width between the bag front side film F1a and the bag rear side film F1b with a space of, for example, about 50 mm, and is a long vertical heat sealer 44a,
The webs on both sides of the male meshing portion and the female meshing portion of the zipper strip F3 are welded to the bag front side film F1a and the bag rear side film F1b by 44b, and the zipper strip F4 is formed by long vertical heat sealers 44b and 44c. The webs on both sides of the male mesh portion and the female mesh portion are welded to the bag front side film F1a and the bag rear side film F1b, and the bag front side film F
Both edges of the film 1a and the bag rear side film F1b are not heat-sealed, and are formed as bag openings for accommodating articles to be packaged. The edges that cut the width of the film running by the pair of slitters into two are the bag opening side. It is heat sealed. The bag making method using the bag making apparatus according to the present embodiment is such that the continuous packaging films F1a and F1b are overlapped and the material roll R is interposed therebetween.
4, continuous zipper strips F4, F5 fed from R5
, The zipper strips F4, F5 are welded to the packaging films F1a, F1b by the vertical heat sealers 44a, 44b, 44c, and a seal is applied to a portion to be the top seal of the bag. To form a continuous closed flat cylinder to form film feed rolls 10, 24, 2
5, the horizontal sealing is performed by the four horizontal sealing devices 19,... Of the upstream station so that the cut line of the continuous sealed flat cylinder is at the center of the sealing width when the film feeding is stopped intermittently. , And three seal portion cooling devices 20 of the middle flow station, ...
The horizontal sealing portion is cooled by the cutting device 22, and the cut line is cut by the cutting device 22 of the downstream station, and the width of the film running by the pair of slitters 21 at the upstream position of the cutting device 22 is cut into two parts. A stand-shaped pouch pack is formed in two rows. In the bag making method using the bag making apparatus of this embodiment, the structure shown in FIG. 2 is adopted, and the positioning shown in FIGS. 3 and 4 can be performed when the bag size is changed.

In the bag making method according to the present invention, the horizontal sealing device performs the horizontal sealing so that the cut line of the continuous closed flat cylinder is located at the center of the sealing width as shown in the above two embodiments. In addition, the case where a horizontal seal is applied adjacent to the scheduled cut line of the continuous closed flat cylinder is also included. Further, the bag making method according to the present invention is also applied to a form of pillow packaging. The bag making method according to the second invention of the present application does not have a seal portion cooling device and does not perform seal portion cooling. In the bag making method according to the present invention, when the positioning control of the servo motor is performed by an absolute method (absolute value method) with respect to a distance from each origin position to a position to be moved, each origin position is changed when the bag size is changed. It is also possible to move to the changed position without returning to.

[0018]

According to the bag making method of the present invention, the horizontal seal device, the cooling device, and the cutting device return to their respective origin positions by driving each servo motor when the bag size is changed, and then the bag after the change is automatically changed. Automatically move to each position corresponding to the size. Therefore, conventionally, when the bag size is changed so that the interval between the horizontal seals is, for example, twice or more, when one device is moved to the upstream side, it is located upstream of the one device. Since the device is in the way, avoiding the device that is in the way to the upstream and moving the one device to the upstream and fixing it at the position corresponding to the changed bag size,
It is necessary to perform this multiple times, or when moving one device to the upstream side, the devices located upstream from the one device become obstructive, so all the devices upstream It is necessary to largely avoid the device on the upstream side and sequentially move downstream from the device on the downstream side to fix the device at a position corresponding to the changed bag size, so that the problem of troublesomeness can be solved. Further, since the handle of the positioning plate of each device is adjusted to the required value of the memory scale by rotating and turning the handle in order from the downstream device, the problem of troublesomeness can be solved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a bag making apparatus for performing a bag making method according to a first embodiment of the present invention.

FIG. 2 (a) is a vertical sectional view taken along IIa-IIa of the bag making apparatus of FIG. 1, and FIG.
IIb-IIb longitudinal sectional view of a bag making apparatus.

FIG. 3 is a plan view of a main part of the bag making apparatus of FIG. 1, showing a state where four horizontal heat sealers and three seal part cooling devices have moved to the origin positions.

FIG. 4 is a plan view of a main part of the bag making apparatus of FIG. 1; The figure which shows the state which moved four horizontal heat sealers and three seal part cooling devices to the position corresponding to bag size.

FIG. 5 is an overall perspective view of a bag making apparatus for carrying out a bag making method according to a second embodiment of the present invention.

[Explanation of symbols]

P1: Stand pouch pack, R1: Raw roll, F1: Packaging film, 1: Film splicing roll, 2, 3 ... Turn bar, 4 ... Feeding roll, 5 ... Cutter, 6 ... M plate, F1a ... Bag front side film, F1b ... Film, 7, 8 ... Accumulator, 9 ... Match roll, 10 ... Film drawer roll, R2, R3 ... Raw roll for gusset, F2, F3 ... Gusset film, 11, 12 ...
Gusset film accumulators, 13, 14, ...
Triangular plate former, 15a, 15b ... punch, 24,
25 ... Film feeding roll, 16a, 16b, 17a,
17b, 18a, 18b ... vertical heat sealer, S1 ...
Bottom seal, 19 ... horizontal heat sealer, 19a, 19
b: heat sealer, S2: side seal, 20 ・
..Seal part cooling device, 20a, 20b ... Seal part cooling device box, 21 ... Slitter, 22 ... Cut device, 23 ... Conveyor, 26,27 ... Common frame, 28 ... -Lower frame, 29 ... Upper frame, 30a, 30b ... Rod, 31a, 31b ...
Common lifting rails, 32a, 32b ... springs for lifting the upper frame, 33a, 33b ... nuts, 34a, 34b ...
.Springs for alleviating biasing force, 35a ... shaft, 35b, 35c
・ Pinion, 35d, 35e ・ ・ ・ Common rack, 36 ・ ・
・ Servo motor, 37a, 37b ・ ・ ・ Ball screw, 38
a, 38b: ball nut, 39a, 39b: bracket, 40a, 40b: timing gear, 41a:
Timing belt, 41b ... Timing belt, 4
2a: Timing gear, 42b: Timing gear, P2: Four-side seal pack with zipper, F4, F5
..Zipper strips, R4, R5: raw roll, F
4, F5: Zipper strip, 43a, 43b, 43c ...
・ Holding guides, 44a, 44b, 44c: vertical heat sealer

Claims (2)

[Claims] 1. A continuous sealed flat cylinder is formed by a continuous packaging film, intermittently travels, and when the intermittent stop is performed, a horizontal seal is applied or a continuous seal is applied so that the cut line of the continuous closed flat cylinder is at the center of the seal width. The upstream station has a plurality of horizontal sealing devices for applying a horizontal seal adjacent to the scheduled cut line of the closed flat cylinder, and at least one cooling device for cooling the horizontal sealing portion provided by the horizontal sealing device is provided in the middle stream. A cutting device that cuts the cut line into a bag having a predetermined shape at a downstream station, and the horizontal sealing device, the sealing portion cooling device, and the cutting device share a common vertical motion. Means for activating a horizontal sealing function, a cooling function, and a cutting function. Further, when the bag size is changed, the plurality of horizontal sealing devices and the sealing section are cooled. A bag making device, wherein the device is moved to each position corresponding to the bag size and fixed based on the cutting device, wherein a ball screw rotates in a running direction below a continuous closed flat cylinder in a running direction. The lower frame portion of the continuous sealed flat cylinder of each of the corresponding number of ball nuts, which are fixed to impossible and screwed to the ball screw, are screwed by the number corresponding to the horizontal sealing device and the sealing portion cooling device. Being pivoted to
The configuration is such that each ball nut is rotated by each servo motor provided on the frame portion of each corresponding device and the corresponding horizontal sealing device and cooling device are moved to each position corresponding to the bag size, and when the bag size is changed. It is characterized in that each servo motor is driven as required to move each horizontal sealing device and each cooling device to each position corresponding to the changed bag size calculated from each origin position. Bag making equipment. 2. A continuous sealed flat cylinder is formed by a continuous packaging film, intermittently travels, and when the intermittent stop is performed, a horizontal seal is applied or a continuous sealing is performed such that a cut line of the continuous sealed flat cylinder is at the center of the seal width. The upstream station has a plurality of horizontal sealing devices that apply a horizontal seal adjacent to the scheduled cut line of the closed flat cylinder, and the downstream station has a cutting device that cuts the planned cut line into a bag of a predetermined shape. The horizontal sealing device and the cutting device are configured to operate a horizontal sealing function and a cutting function by a common vertical movement transmitting means, and when the bag size is changed, the plurality of horizontal sealing devices are based on the cutting device. A bag making apparatus having a configuration in which the ball screw is moved to and fixed to each position corresponding to the bag size, and the ball screw does not rotate parallel to the running direction below the continuous closed flat cylinder. And a ball nut screwed into the ball screw is screwed by the number corresponding to the horizontal sealing device and is pivotally supported by the lower frame portion of the continuous closed flat cylinder of each corresponding device. Each ball nut is rotated by each servo motor provided in the frame portion of each corresponding device, and the corresponding horizontal sealing device is moved to each position corresponding to the bag size. The bag making device is configured to move each horizontal seal device to each position corresponding to the changed bag size calculated from each origin position by driving as required.