JP7454837B2 - Packaging film joining equipment and packaging film automatic exchange equipment - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies Exhibition name JAPAN PACK 2019 (Japan Packaging Industry Exhibition) Organizer name Japan Packaging Machinery Association General Incorporated Association Dates October 29th to November 1st, 2019

The present invention applies to the terminal end (rear end, end; upstream end in the delivery direction of the packaging film) of a packaging film being used in an automatic packaging machine, etc., and the starting end (leading end) of a packaging film to be used next. The present invention relates to a packaging film joining technique for joining (connecting, coupling) the downstream end of the packaging film in the sending direction.

Conventionally, packaging film is continuously or intermittently fed out (pulled out) in the packaging film transport direction from a raw roll around which a long packaging film is wound, and the fed packaging film is formed into a bag shape. There is an automatic filling and packaging machine that automatically produces a package by filling the inside with contents and sealing it by heat sealing.

In such automatic filling and packaging machines, when the packaging film (original roll) in use runs out, it is necessary to replace it with another (new) packaging film (original roll). In some cases, the operation of the automatic filling and packaging machine has to be stopped, resulting in a decrease in packaging production efficiency.

In addition, in order to pull out the packaging film from a new roll and set it in the automatic filling and packaging machine, position adjustment and trial runs are required in order to be able to produce normal packaging. As the stoppage time becomes longer, the yield rate deteriorates as more packaging bodies (packaging film and contents) are discarded.

For this reason, for example, in Patent Document 1 and Patent Document 2, the terminal end (rear end, end; upstream end in the delivery direction of the packaging film) of the packaging film (raw roll) in use is automatically defined. and the starting end (tip; the downstream end in the delivery direction of the packaging film) of the packaging film (original roll) to be replaced.

Patent No. 4037639 Patent No. 6574911

However, in Patent Document 1, as shown in FIG. , are connected by heat welding with the heat sealing layer sides facing each other, so the connecting part becomes a protrusion, and the thickness of the connecting part in the thickness direction of the packaging film is thicker than other parts. Because it is quite thick, it is easy for the packaging film to travel diagonally on the transport path, which may cause misalignment during heat sealing, which may impair the quality of the product, and also cause clogging of the packaging film. There was a risk that production efficiency would be lowered, as problems such as this would occur and need to be removed.

In addition, in the device of Patent Document 2, as shown in FIG. A band-shaped joint tape (heat-adhesive tape) is set and heat-sealed so as to butt the starting ends and cover the butted part, and the joint tape (heat-adhesive tape) can be used to replace the used packaging film with replacement packaging. It is described that fusion bonding with a film is performed.

However, when band-shaped joint tape (thermal adhesive tape) is heated and welded, it curls (has a curling habit) and the connecting part becomes wavy in the thickness direction of the packaging film. This tends to cause the packaging film to travel diagonally in the conveyance path of the packaging film, and as with the case of Patent Document 1, there is a risk that misalignment may occur during heat sealing and impair the quality of the product. There was a risk that production efficiency would be lowered due to clogging, etc., which would need to be removed.

The present invention was made in view of the above circumstances, and automatically connects the end of the packaging film in use and the start of the replacement packaging film while minimizing the difference in level at the joint and suppressing the occurrence of curling. It is an object of the present invention to provide a packaging film joining device and a packaging film automatic exchange device that can join packaging films in a consistent manner. In particular, for example, without stopping the operation of the automatic filling and packaging machine, the end of the used packaging film and the beginning of the replacement packaging film can be connected to reduce the difference in level at the joint and to suppress the occurrence of curling. An object of the present invention is to provide a packaging film joining device and a packaging film automatic exchange device that can suppress the occurrence of packaging film clogging, skewing, etc., and thereby improve production efficiency. .

For this reason, the packaging film joining device according to the present invention
A packaging film joining device that joins a terminal end of a preceding packaging film that is ahead in the transport direction of the packaging film and a starting end of a trailing packaging film that follows the terminal end of the preceding packaging film in the transport direction of the packaging film , ,
A first suction means and a second suction means are arranged side by side on the upstream side and the downstream side along the conveyance direction of the packaging film, and each is configured to be able to suction the packaging film;
An inner surface corresponding to the inside of the packaging film that is wound around a roll by the first suction means disposed at least on the upstream side, straddling the first suction means and the second suction means. starting edge forming means for cutting the trailing packaging film onto which has been adsorbed across the width direction of the packaging film between the first suction means and the second suction means to form a starting end of the trailing packaging film;
Rotating means for rotating the first suction means and the second suction means in a plane parallel to the thickness direction of the packaging film;
The first suction means and the second suction means are rotated by the rotation means so that they come into contact with the inner surface on the terminal side of the preceding packaging film while straddling between the first suction means and the second suction means. At the same time, with the inner surface of the terminal side of the preceding packaging film being sucked by the second suction means, the packaging film is cut across the width direction between the first suction means and the second suction means, and the preceding packaging film is removed. an end forming means for forming an end of the film;
In a state where adsorption by the first adsorption means and the second adsorption means is maintained, when viewed from a direction perpendicular to the surface of the packaging film, the starting end of the trailing packaging film formed by the starting end forming means and the terminal end. At a position covering the terminal end of the preceding packaging film formed by the forming means , a tape clamp that clamps the leading end of the connecting tape, which is pulled out from the connecting tape reel and has adhesive strength at room temperature , is placed on the packaging film. a connection tape setting means that is set in a non-contact state with each packaging film across the width direction of the packaging film by moving it along the width direction ;
a tape pressing and pasting roll that moves the connection tape set by the connection tape setting means from one end of the packaging film in the width direction to the other end while maintaining suction by the first suction means and the second suction means; While pressing the film toward the first suction means and the second suction means through , a connecting tape pressing means for pasting together the two in abutted state;
It is characterized by having the following.

In the present invention,
The preceding packaging film is a packaging film pulled out from a preceding packaging film roll wound into a roll,
The trailing packaging film is a packaging film pulled out from a trailing packaging film roll wound into a roll,
A first packaging film shaft supporting the preceding packaging film roll and a second packaging film shaft supporting the trailing packaging film roll are provided on a common packaging film shaft base,
After the connection tape pressing and pasting means attaches the starting end of the trailing packaging film formed by the starting end forming means and the ending end of the preceding packaging film formed by the terminating end forming means in abutted state, the packaging is performed. The present invention may be characterized in that it includes a rotating means for rotating the film shaft base to switch the position of the first packaging film shaft and the position of the second packaging film shaft.

In the present invention,
When supplying packaging film from a pre-packaging film roll to an automatic filling packaging machine,
When the remaining amount of the preceding packaging film that is the packaging film of the preceding packaging film roll becomes a predetermined amount,
In order to switch to the trailing packaging film, which is the packaging film of the trailing packaging film roll, the connection tape pressing and pasting means connects the starting end of the trailing packaging film formed by the starting end forming means, and the connecting tape formed by the trailing end forming means. It can be characterized in that it is bonded to the end of the preceding packaging film in a butted state.

Furthermore, the packaging film automatic exchange device according to the present invention includes:
It is configured to include the packaging film joining device according to the present invention, and
An accumulator is provided between the packaging film joining device and the automatic filling and packaging machine to which the packaging film of the preceding packaging film roll is supplied, which can store the preceding packaging film by changing the conveyance distance of the packaging film. provided,
When the remaining amount of the preceding packaging film, which is the packaging film of the preceding packaging film roll, is reduced to a predetermined amount,
In order to switch to the trailing packaging film, which is the packaging film of the trailing packaging film roll, the connection tape pressing and pasting means connects the starting end of the trailing packaging film formed by the starting end forming means, and the connecting tape formed by the trailing end forming means. Until the pasting is completed, the end of the preceding packaging film is butted against the
By adjusting the amount of packaging film stored in the accumulator, the conveyance speed of the supplied packaging film can be controlled to a predetermined value without stopping the supply of the packaging film to the automatic filling and packaging machine.

According to the present invention, it is possible to automatically join the terminal end of the packaging film in use and the start end of the replacement packaging film while reducing the difference in level at the joining part and suppressing the occurrence of curling. A packaging film joining device and a packaging film automatic exchange device can be provided. In particular, for example, without stopping the operation of the automatic filling and packaging machine, the end of the used packaging film and the beginning of the replacement packaging film can be connected to reduce the difference in level at the joint and to suppress the occurrence of curling. As a result, it is possible to provide a packaging film joining device and a packaging film automatic exchange device that can suppress the occurrence of clogging or skewing of packaging films, thereby improving production efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the whole structure of the packaging film automatic exchange apparatus and automatic filling packaging machine which were comprised including the packaging film joining apparatus based on one embodiment of this invention. It is a side view which shows the whole structure of the packaging film automatic exchange apparatus based on embodiment same as the above. (A) is a diagram showing the operating section of the automatic packaging film exchanger as above, and (B) is a side view showing a state in which a replacement packaging film roll is set on the second packaging film shaft of the automatic packaging film exchanger as above. . (A) is an enlarged side view of a part of the packaging film joining device of the packaging film automatic exchange device, and (B) is a side view showing a replacement part for the first suction plate and the second suction plate of the same packaging film joining device. It is a side view which expands and shows the state where the packaging film was adsorbed. It is a view taken along arrow A in FIG. 4(A), showing an enlarged view of the connection tape unit of the packaging film bonding device according to the above embodiment. It is a side view which shows the state where the remaining amount of the packaging film in use set to the packaging film automatic exchange device same as the above becomes small, and exchange with a replacement packaging film is started. (A) is a side view illustrating the operation of rotating the first suction plate and the second suction plate of the packaging film bonding device to bring them into contact with the inner surface of the packaging film during use, and to adsorb them; It is an enlarged view of (A). (A) is a view taken from arrow B in FIG. 7(B) (at the time when the cutter unit starts cutting), showing the cutter portion of the packaging film of the same packaging film joining apparatus as above, and (B) is a view when the cutter unit is running ( 7(B) (an enlarged view of the cutter unit portion) showing the situation during cutting). FIG. (A) is a view taken from arrow B in FIG. 7(B) showing the state of the cutter unit when cutting is completed, and (B) is a cutter unit portion, a first suction plate, and a second suction plate of the same packaging film joining device. FIG. (A) is a view taken in the direction of arrow A in FIG. 4(A) showing the start of the tape stretching operation of the connection tape unit, and (B) is a view of FIG. ) is a view taken in the direction of arrow A. (A) is a view taken in the direction of arrow A in FIG. 4(A) showing the start of the tape pushing and pasting operation of the connection tape unit, and FIG. 4B is a view of FIG. It is a view taken along arrow A in A). 4(A) is a view taken along arrow A in FIG. 4(A) showing how both ends of the connecting tape of the connecting tape unit are cut, and FIG. 4(B) is a view taken along arrow C of FIG. 4(A). It is a side view which shows the whole structure of the packaging film automatic exchange apparatus same as the above, showing the state where the joining of the packaging film in use and the packaging film for replacement is completed. It is a side view which shows the whole structure of the packaging film automatic exchange apparatus same as the above, showing the state where the joining of the packaging film in use and the replacement packaging film is completed and the 1st suction plate and the 2nd suction plate are returned to their original position. FIG. 2 is a side view showing the overall configuration of the automatic packaging film exchange device, showing a state in which the packaging film in use and the packaging film for replacement have been joined together and the roll of replacement packaging film has been rotated to the position of the packaging film roll in use; . It is a side view which shows the whole structure of the packaging film automatic exchange apparatus same as the above, showing the state (initial state) where the joining of the packaging film in use and the replacement packaging film is completed and the storage amount of an accumulator is returned to the original state. (A) is a diagram illustrating an example of conventional bonding of packaging films, and (B) is a diagram illustrating another conventional example.

An embodiment of the present invention will be described below with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below.

FIG. 1 is a side view of an automatic filling and packaging machine 1 equipped with an automatic packaging material exchange device (automatic packaging film exchange device) 2 according to an embodiment of the present invention.
The automatic filling and packaging machine 1 shown in FIG. 1 forms a packaging film (packaging material) continuously or intermittently supplied from a packaging material automatic exchange device 2 including a packaging material joining device into a bag shape and fills the inside thereof. The package is automatically produced by filling it with the contents and sealing it by heat sealing.
The packaging film, which is the packaging material, is made of a transparent or translucent material, for example, a base film such as PET, and a sealant film such as polyethylene, which has a lower melting point than the base film. However, the packaging film may have a three-layer structure of a base film, an intermediate film, and a sealant film.
The packaging film according to this embodiment is not particularly limited as long as it can be fused by heating the sealant film (sealant layer).

The packaging material automatic exchange device (packaging film automatic exchange device) 2 including the packaging material bonding device (packaging film bonding device) according to the present embodiment has the following features as shown in FIGS. 2 and 3(B). A packaging material shaft base 201, which is a packaging film shaft base, is provided with two first packaging material shafts 202 (first packaging film shaft) and a second packaging material shaft (second packaging film shaft) 203. In the automatic material exchange device 2, during operation of the automatic filling and packaging machine 1 (during production of packages), a packaging film roll (original roll) supported by one first packaging material shaft (packaging material shaft 1) 202 is used. ; Before the packaging film (packaging film roll in use) FR1 (packaging film in use) F1 runs out, a new packaging film roll (original film) that has been supported in advance on the other second packaging material shaft (packaging material shaft 2) 203 is removed. Roll; replacement packaging film roll) FR2 can be automatically switched to packaging film (replacement packaging film) F2.
Note that the preceding packaging film according to the present invention corresponds to the packaging film (packaging film in use) F1, and the trailing packaging film corresponds to the packaging film (replacement packaging film) F2. Further, the preceding packaging film roll according to the present invention corresponds to a packaging film roll (original fabric roll) FR1, and the following packaging film roll corresponds to a packaging film roll (original fabric roll) FR2.
Further, the inside of the packaging film wound around the raw roll is referred to as the inner surface (back surface), and the outer surface is referred to as the outer surface (front surface).

To explain step-by-step from the preparation before starting the operation of the automatic filling and packaging machine 1, first, the user (user) must insert the first packaging material shaft (the first packaging film shaft, the packaging material shaft) in the automatic packaging material exchange device 2. 1) Pass the 202 packaging films F1 through the packaging material feed roll 208 of the automatic filling and packaging machine 1 via each guide roll GR1 to GR16 (step 1).

Next, the user starts the operation of the automatic filling and packaging machine 1, supplies the packaging film F1 to the packaging film transport path via the packaging material feed roll 208, and starts producing the packaging body (step 2).
Note that the automatic filling and packaging machine 1 is configured to form a packaging film into a bag shape and heat seal the bag while filling the inside with the contents to produce a package with the contents sealed.

While the automatic filling and packaging machine 1 is in operation, the user (or the control device) presses the packaging material set start button 200A (see FIG. 3(A)) on the operation unit 200, and then stores the second stock as a replacement stock. The replacement packaging film roll FR2 is supported (set) on the packaging shaft (second packaging film shaft, packaging shaft 2) 203 (step 3).

After that, the user (or the control device) presses the first suction plate (suction plate 1) suction ON/OFF button 200C and the second suction plate (suction plate 2) suction ON/OFF button 200D (Fig. 3(A) )) to turn on the vacuum suction of the first suction plate (suction plate 1) 213 and the second suction plate (suction plate 2) 214 (see FIG. 4(A)) (step 4).
Note that the first suction plate (suction plate 1) 213 corresponds to an example of the first suction means according to the present invention, and the second suction plate (suction plate 2) 214 corresponds to an example of the second suction means according to the present invention. do.

Next, as shown in FIG. 4(A), the user (or the control device) pulls out the replacement packaging film F2 from the replacement packaging film roll FR2 and attaches the first suction plate (suction plate 1) 213 and the second The inner surface (back surface) of the suction plate (suction plate 2) 214 is suctioned so as to straddle both sides (step 5). Note that the first suction plate (suction plate 1) 213 and the second suction plate (suction plate 2) 214 extend along the width direction Y of the replacement packaging film F2.

After that, the user (or the control device) selects the suction cut provided between the first suction plate (suction plate 1) 213 and the second suction plate (suction plate 2) 214, as shown in FIG. 4(B). The replacement packaging film F2 is cut along the groove 216 by the cutter 217 (Step 6). The cutter 217 can be configured to be movable while being pressed automatically (automatically controlled by a control device) or manually. The moving direction of the cutter 217 (the extending direction of the suction cut groove 216) is along the width direction Y of the replacement packaging film F2.
This forms the starting end of the replacement packaging film (following packaging film) F2.

After that, the user (or the control device) operates the second suction plate (suction plate 2) suction ON/OFF button 200D of the operation unit 200 to turn off the vacuum suction of the second suction plate (suction plate 2) 214 ( (stop), and then remove the scrap F2B of the replacement packaging film F2 (step 7).

Next, the user (or the control device) pulls out the connection tape 219 from the connection tape reel 218 of the connection tape unit 215, and as shown in FIG. Clamp with tape clamp 222 (step 8). Note that if the packaging material has been replaced once before, a piece of the connecting tape 219 remains in the tape clamp 222 and is removed. The clamp slurry rail 221 extends along the width direction Y of the replacement packaging film F2.
Note that the connection tape 219 may be a general adhesive tape such as cellophane tape that does not require heating or the like. In addition, colored (for example, black) tape (for example, Cellotape (registered trademark) No. 430 etc.) can be used.
The tape clamp 222 is not particularly limited as long as it can clamp the connection tape, and for example, a horizontal push-type toggle clamp can be used.

Thereafter, the user (or the control device) deems that the setting of the second packaging film roll FR2 has been completed and presses the packaging material set completion button 200B (step 9).

As shown in FIG. 6, the remaining amount of the used packaging film F1 of the used packaging film roll FR1 decreases, and the end tape for predicting the end of the packaging material provided near the widthwise end of the used packaging film F1 ends. When the tape detection sensor 205 detects the detection signal, the control device including the operation unit 200 stops driving the packaging material feed roll 206 (electric motor) (step 10).
However, in the case of packaging film that does not have an end tape for predicting the end of packaging material (for example, a tape that is magnetic or has holes made to indicate the amount remaining), the packaging film roll It is also possible to have a configuration in which the end of the packaging film is predicted based on the diameter, the number of rotations of the packaging material shaft, etc.
The means for detecting the remaining amount of the packaging film F1 in use is the preceding packaging film remaining amount detecting means according to the present invention.

Note that while the rotational drive of the packaging material feed roll 206 is stopped, by moving the accumulation base 207 to the right in FIG. ) is gradually consumed (reduced), and the consumed (reduced) amount of in-use packaging film F1 is used to operate (package) the automatic filling and packaging machine 1. The packaging film production speed (package production speed) can be continued at a predetermined (e.g., normal) packaging film transport speed (package production speed).

That is, when the accumulation base 207 is moved to the right in FIG. 6, the amount of packaging film stored in the accumulator A decreases, and when the accumulation base 207 is moved to the left in FIG. The amount of is increasing. By utilizing this increase and decrease in storage amount, it is possible to make the transport speed of the packaging film on the downstream side of accumulator A different from the transport speed of the packaging film on the upstream side of accumulator A. Even if the transportation of the packaging film is stopped, the transportation speed of the packaging film on the downstream side of the accumulator A (the production speed of the automatic filling and packaging machine 1) can be controlled to an appropriate speed.

After stopping the rotational drive (electric motor) of the packaging material feed roll 206, the control device extends the suction plate cylinder (air actuator) 211 to move the pivot shaft GR1 as a fulcrum, as shown in FIG. 7(A). Then, the suction plate arm 210 is rotated counterclockwise in FIG. 7A until it comes into contact with the stopper 223 (step 11).

Thereafter, as shown in FIG. 7B, the control device starts vacuum suction of the second suction plate (suction plate 2) 214 to suction the inner surface of the packaging film F1 in use (step 12).

Thereafter, as shown in FIGS. 8(A) and 8(B), in the control device, the cutter blade 228 of the cutter unit 227 on the cutter slide guide 224 is pushed into the suction plate cut groove 216, and the cutter blade 228 is not used. With the middle packaging film F1 pressed by the presser roll 229, the cutter unit 227 is moved along the cutter slide guide 224 (along the width direction Y of the in-use packaging film F1), and the cutter blade 228 removes the in-use packaging. Cut the film F1 (step 13).
This forms the end of the packaging film in use (preceding packaging film) F1.

As shown in FIGS. 9(A) and 9(B), when the cutter blade 228 cuts across the width direction Y of the packaging film and the cutting of the packaging film F1 in use is completed, the suction plate cut groove 216 (with the suction plate cut groove 216 in between), the end (F1A) of the used packaging film F1 and the start end (F2A) of the replacement packaging film F2 are in a state where they face each other and butt each other. .

The remaining portion (cut-off portion) F1B of the in-use packaging film F1 cut off in step 10 is not particularly held and falls downward under its own weight (see FIG. 9(B)). However, a mechanism for pulling downward or a recovery mechanism such as a shooter may be provided.

Next, the end (F1A) of the used packaging film F1 and the start end (F2A) of the replacement packaging film F2, which are facing each other and abutted against each other, are joined with the suction plate cut groove 216 in between. The process to do this will be explained.

As shown in FIGS. 10(A) and 10(B), the connecting tape 219 clamped by the tape clamp 222 that is slidably supported by the clamp slide guide 220 is not in use. The packaging film F1 is slid along the clamp slide guide 220 by an amount that covers the entire width of the replacement packaging film F2 that is facing and butted against the packaging film F1 (Step 14).

The clamp slide guide 220 extends along the width direction Y of the in-use packaging film F1 and the replacement packaging film F2, which face each other and abut against each other. At a predetermined distance from the outer surface (surface) of the in-use packaging film F1 and the replacement packaging film F2 (see FIG. 10(B)) so as not to contact the end of the film F1 and the start end of the replacement packaging film F2. It is arranged.
That is, the connection tape 219 is stretched across the width direction of the in-use packaging film F1 and the replacement packaging film F2 without contacting the outer surfaces (surfaces) thereof. The connection tape reel 218, clamp slide guide 220, tape clamp 222, etc. correspond to an example of the connection tape setting means according to the present invention.

Subsequently, as shown in FIG. 11(A), the tape pressing cylinder (linear actuator) 242 that is slidably supported by the tape pressing and pasting slide guide 240 via the tape pressing and pasting slide table 241 is extended. Then, the rotatable tape pressing roll 243 attached to the tip is used to cover the joint (butting part) between the end of the packaging film F1 in use and the start end of the replacement packaging film F2. The disposed connection tape 219 is pressed (step 15).

Thereafter, with the tape pressing cylinder (direct actuator) 242 pressed, the tape is pressed along the tape pressing and pasting slide guide 240 (along the width direction Y of the packaging film) as shown in FIG. 11(B). Move the pasting roll 243 and paste the joint (butting part) between the end of the used packaging film F1 and the beginning of the replacement packaging film F2 over the entire width in the width direction of the packaging film ( Step 16).

Next, as shown in FIG. 12(A), the connection tape is cut near both ends in the width direction of the joint (butting part) between the end of the used packaging film F1 and the start of the replacement packaging film F2. The portions of the connecting tape 223 that do not overlap with the packaging film are cut along the grooves 232 (right end side in FIG. 12(A)) and 233 (left end side in FIG. 12(A)) (step 17).
For cutting here, as shown in FIG. 12(B), the connection tape cut blade 234 at the tip is moved in the packaging film transport direction (connection tape cut groove) by expanding and contracting the connection tape cut blade cylinder (linear actuator) 235. 232, 233).
The connection tape cut grooves 232 and 233 are provided on the upper surface (the surface on which the packaging film is placed) of the first suction plate (suction plate 1) 213 and the second suction plate (suction plate 2) 214, so that the packaging film is It is engraved along the conveyance direction (direction perpendicular to the width direction and thickness direction of the packaging film).

Further, a connection tape cut blade cylinder (direct actuator) 235 equipped with a connection tape cut blade 234 shown in FIG. 12(B) is provided corresponding to the connection tape cut groove 232 and the connection tape cut groove 233, respectively. There is. However, it is also possible to cut both ends by moving a connecting tape cutting blade cylinder (linear actuator) 235 provided with a single connecting tape cutting blade 234 between the connecting tape cutting grooves 232 and 233.

After cutting the connection tape 219, the tape clamp 222 returns to its original position while holding the cut end (223) of the connection tape 219 (step 18).
After returning, the gripping tape 223 (piece) is released and it waits at the original position in preparation for the next operation.

As shown in FIG. 13, when the joining process between the end of the packaging film F1 in use and the start end of the replacement packaging film F2 is completed, the control device connects the first suction plate (suction plate 1) 213 and the second suction plate Vacuum suction of the plate (suction plate 2) 214 is stopped (step 19).

Thereafter, as shown in FIG. 14, the control device contracts the suction plate cylinder 211 and rotates the suction plate arm 210 clockwise in FIG. 14 about the pivot GR1 as a fulcrum until it contacts the stopper 212. (Step 20).
During this time, as shown in FIG. 14, the rotational drive of the packaging material feed roll 206 is stopped, and the accumulation base 207 continues to move rightward in FIG. : Gradually consume (reduce) the stored portion of the used packaging film F1 stored in the folded area of multiple stages of the used packaging film F1, and use the consumed (reduced) amount of the used packaging film F1. By doing so, the operation of the automatic filling and packaging machine 1 (production of packages) is continued at the normal packaging film transport speed.

Next, as shown in FIG. 15, the control device rotates the packaging shaft base 201, which supports the first packaging shaft 202 and the second packaging shaft 203, by 180° counterclockwise around the pivot 201A. Then, the positions of the first packaging material shaft 202 and the second packaging material shaft 203 are exchanged (step 21).
In line with this, the rotational drive (packaging material feeding) of the packaging material feeding roll 206 of the packaging material automatic exchange device 2 is restarted, and the accumulation base 207 is moved to the left in FIG. 15 (returning to its original position). Start.

Then, while continuing the operation of the automatic filling and packaging machine 1 (production of packages) at the usual packaging film transport speed, the accumulation base 207 is gradually moved to the left in FIG. As shown in FIG. 16, the accumulation base 207 is returned to its original position and returned to its initial state while gradually increasing the accumulated amount of packaging film in the zone (multi-stage folding area of the used packaging film F1). Return (step 22).

Thereafter, the user removes the packaging film roll FR2 that was previously in use from the first packaging material shaft 202 in preparation for the next packaging material replacement.

As described above, according to the present embodiment, the terminal end of the packaging film in use (packaging film in use) and the beginning end of the packaging film scheduled to be used next (replacement packaging film) are connected by connecting tape. This method allows the terminal end of the used packaging film and the starting end of the replacement packaging film to be joined without stopping the operation of the automatic filling and packaging machine, reducing the difference in level at the joint part and preventing curling. It is possible to provide a method and apparatus for joining packaging films, which can suppress the occurrence of clogging and skewing of packaging films, thereby improving production efficiency.

That is, according to the present embodiment, as in Patent Document 1, the end of the packaging film in use (packaging film in use) and the beginning of the packaging film scheduled to be used next (replacement packaging film) are separated. When connecting the sealant layers (heat sealing side, fusing layer) sides facing each other and heat welding and pasting them together, the connecting part becomes protruding, which prevents skewing of the packaging film. It is possible to eliminate the risk of lowering production efficiency, such as misalignment during heat sealing, which can easily occur and impair the quality of the product, as well as clogging of the packaging film, which must be removed. can.

Further, according to the present embodiment, as in Patent Document 2, the terminal end of the packaging film in use (packaging film in use) and the starting end of the packaging film scheduled to be used next (replacement packaging film) , when heat-sealing the heat-sealing tape, the heat-sealing tape curls (curls), causing the packaging film to run skewed, etc. There is a risk that product quality may be compromised due to misalignment during heat sealing, and the packaging film may become clogged and need to be removed, reducing production efficiency. can.

As described above, according to the present embodiment, the terminal end of the used packaging film and the starting end of the replacement packaging film are automatically connected while minimizing the difference in level at the joint and suppressing the occurrence of curling. It is possible to provide a packaging film joining device and a packaging film automatic exchange device that can perform packaging film joining automatically. In particular, for example, without stopping the operation of the automatic filling and packaging machine, the end of the used packaging film and the beginning of the replacement packaging film can be connected to reduce the difference in level at the joint and to suppress the occurrence of curling. As a result, it is possible to provide a packaging film joining device and a packaging film automatic exchange device that can suppress the occurrence of clogging or skewing of packaging films, thereby improving production efficiency.

The embodiments described above are merely examples for explaining the present invention, and it goes without saying that various changes can be made without departing from the gist of the present invention.

1 Automatic filling and packaging machine 2 Packaging material joining device (packaging film joining device)
201 Packaging material shaft base 202 First packaging material shaft (first packaging film shaft)
203 Second packaging material shaft (second packaging film shaft)
207 Accumulation base 213 First suction plate (suction plate 1)
214 Second suction plate (suction plate 2)
215 Connecting tape unit 217 Cutter 218 Connecting tape reel 219 Connecting tape 222 Tape clamp 227 Cutter unit 228 Cutter blade 234 Connecting tape cutting blade 243 Tape pressing roll F1 Packaging film (packaging film in use, preceding packaging film roll)
F2 Packaging film (replacement packaging film, trailing packaging film roll)
FR1 Packaging film roll (packaging film roll in use, preceding packaging film roll)
FR2 Packaging film roll (replacement packaging film roll, trailing packaging film roll)

Claims (4)

A packaging film joining device that joins a terminal end of a preceding packaging film that is ahead in the transport direction of the packaging film and a starting end of a trailing packaging film that follows the terminal end of the preceding packaging film in the transport direction of the packaging film , ,
A first suction means and a second suction means are arranged side by side on the upstream side and the downstream side along the conveyance direction of the packaging film, and each is configured to be able to suction the packaging film;
An inner surface corresponding to the inside of the packaging film that is wound around a roll by the first suction means disposed at least on the upstream side, straddling the first suction means and the second suction means. starting edge forming means for cutting the trailing packaging film onto which has been adsorbed across the width direction of the packaging film between the first suction means and the second suction means to form a starting end of the trailing packaging film;
Rotating means for rotating the first suction means and the second suction means in a plane parallel to the thickness direction of the packaging film;
The first suction means and the second suction means are rotated by the rotation means so that they come into contact with the inner surface on the terminal side of the preceding packaging film while straddling between the first suction means and the second suction means. At the same time, with the inner surface of the terminal side of the preceding packaging film being sucked by the second suction means, the packaging film is cut across the width direction between the first suction means and the second suction means, and the preceding packaging film is removed. an end forming means for forming an end of the film;
In a state where adsorption by the first adsorption means and the second adsorption means is maintained, when viewed from a direction perpendicular to the surface of the packaging film, the starting end of the trailing packaging film formed by the starting end forming means and the terminal end. At a position covering the terminal end of the preceding packaging film formed by the forming means , a tape clamp that clamps the leading end of the connecting tape, which is pulled out from the connecting tape reel and has adhesive strength at room temperature , is placed on the packaging film. a connection tape setting means that is set in a non-contact state with each packaging film across the width direction of the packaging film by moving it along the width direction ;
a tape pressing and pasting roll that moves the connection tape set by the connection tape setting means from one end of the packaging film in the width direction to the other end while maintaining suction by the first suction means and the second suction means; While pressing the film toward the first suction means and the second suction means through , a connecting tape pressing means for pasting together the two in abutted state;
A packaging film joining device characterized by comprising: The preceding packaging film is a packaging film pulled out from a preceding packaging film roll wound into a roll,
The trailing packaging film is a packaging film pulled out from a trailing packaging film roll wound into a roll,
A first packaging film shaft supporting the preceding packaging film roll and a second packaging film shaft supporting the trailing packaging film roll are provided on a common packaging film shaft base,
After the connecting tape pressing and pasting means attaches the starting end of the trailing packaging film formed by the starting end forming means and the ending end of the preceding packaging film formed by the terminating end forming means in a butt state, the packaging is performed. 2. The packaging film joining method according to claim 1, further comprising a rotating means for rotating the film shaft base to switch the position of the first packaging film shaft and the position of the second packaging film shaft. Device. When supplying packaging film from a pre-packaging film roll to an automatic filling packaging machine,
When the remaining amount of the preceding packaging film that is the packaging film of the preceding packaging film roll becomes a predetermined amount,
In order to switch to the trailing packaging film, which is the packaging film of the trailing packaging film roll, the connection tape pressing and pasting means connects the starting end of the trailing packaging film formed by the starting end forming means, and the connecting tape formed by the trailing end forming means. 3. The packaging film bonding apparatus according to claim 2, wherein the packaging film is bonded to the terminal end of the preceding packaging film that has been butted against each other. It is configured to include the packaging film joining device according to claim 3, and
An accumulator is provided between the packaging film joining device and the automatic filling and packaging machine to which the packaging film of the preceding packaging film roll is supplied, which can store the preceding packaging film by changing the conveyance distance of the packaging film. provided,
When the remaining amount of the preceding packaging film, which is the packaging film of the preceding packaging film roll, is reduced to a predetermined amount,
In order to switch to the trailing packaging film, which is the packaging film of the trailing packaging film roll, the connection tape pressing and pasting means connects the starting end of the trailing packaging film formed by the starting end forming means, and the connecting tape formed by the trailing end forming means. Until the pasting is completed, the end of the preceding packaging film is butted against the
A packaging film characterized in that by adjusting the amount of packaging film stored in the accumulator, the conveyance speed of the supplied packaging film can be controlled to a predetermined value without stopping the supply of the packaging film to the automatic filling and packaging machine. Automatic exchange device.

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