JPH06171624A - Welding device for film and tape - Google Patents

Abstract

PURPOSE:To provide a welding device which can perform the clamping and cutting of a tape, and the welding motion for the tape and a film as a series. CONSTITUTION:When a lower electrode 61 ascends, prior to that, the leading end of a clamping member 62 presses and clamps the leading end of a tape to a receiving surface 56a of an upper guide 56. When the lower electrode 61 ascends further, the tape 2 is cut by a contact between a cutting blade 61d which is formed on the lower electrode 61 and the edge of the receiving surface 56a, and the cut tape 2 is drawn by a tape suction hole 61d, and is held on a pressing surface 61a of the lower electrode 61. When the lower electrode 61 ascends further, and an upper electrode 81 descends, the tape and a long-sized film 1 are pinched between both electrodes 61 and 81, and the tape and the film 1 are welded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film-to-tape welding device capable of cutting a tape for opening a film into strips and adhering the tape to a long film which is a packaging film for processed foods. .

[0002]

2. Description of the Related Art Generally, processed foods such as sausages and sticky cheeses are wrapped around a vinylidene chloride resin or other packaging film, and the packaging film is fastened at both ends. Conventionally, this type of processed food has been inconvenient because a knife or the like is required to open the packaging film. In addition, some packaging films have a cut tape for opening the film attached,
Conventionally, since this cut tape is continuously provided in the longitudinal direction of the stick-shaped processed food, when the cut tape is pulled out with a finger, the processed food is deformed and the packaging film cannot be reliably torn. was there.

Therefore, one of the applicants of the present invention is shown in FIG.
The application is filed as Japanese Utility Model Application No. 60-186182 for the package shown in FIG.

In the invention according to this prior application, a strip-shaped cut tape 2 is adhered to a part of a packaging film 1 for wrapping a processed food such as sausage by a partial welding portion 3. When the sausage or the like is packaged, the packaging film 1 is rolled into a tubular shape and welded by the seal wire 1a. The processed food is squeezed at both ends in the longitudinal direction, and the packaging film 1 is squeezed and fixed by the metal wire 4.

In this packaging mode, when the wrapping film 1 is peeled off, if the tip of the cut tape 2 is pinched with a finger and pulled as shown in FIG. 13, the wrapping film 1 will have the tip of the welded portion 3 as shown in FIG. The packaging film 1 is easily torn off.

[0006]

However, in order to weld the strip-shaped cut tape 2 to the above-mentioned packaging film 1, a mechanism for holding the tape pulled out from the original fabric, and a state of being held by this mechanism It is necessary to sequentially arrange a mechanism for cutting the tape, a mechanism for feeding the cut tape to the welding portion with the packaging film, and a mechanism for sandwiching the cut and fed tape and the film together and welding both. In addition, it is necessary to separately provide a mechanism for giving a driving force to them, which makes the structure very complicated.

The present invention solves the above-mentioned conventional problems, and makes it possible to perform a tape holding operation, a tape cutting operation, an operation for attaching the cut tape to a film, and a welding operation between the tapes in a small space. It is an object of the present invention to provide a film-tape welding device which can be continuously operated by a mechanism arranged.

[0008]

SUMMARY OF THE INVENTION A film-tape welding device according to the present invention comprises a pair of welding members provided to face each other at a position where the film is sandwiched, and a tape located on one side of the film. A guide that guides the welding member of
A drive mechanism that moves one of the welding members in the film direction, a clamp member that moves in the film direction together with the welding member and presses the tape against the receiving surface of the guide, and is clamped between the clamp member and the receiving surface. It is characterized in that a cutting blade is provided for cutting the tape, the tip of which extends between the welding member and the film, between the welding member and the clamp member.

Further, by the above means, the cutting blade is provided at the contact portion between the edge portion of the welding member and the edge portion of the receiving surface of the guide, and when the welding member moves in the film direction, it receives the cutting member. After the tape is clamped by the surface, the tape is cut by the cutting blade,
In addition, the welding member is provided with a suction portion for holding the cut tape.

[0010]

According to the first means, in the operation of moving the welding member in the film direction, the clamp member moving together with the welding member presses the tape against the receiving surface of the guide,
This clamps the tape. After the clamped tape is cut by the cutting blade, the cut tape is attached to the film by the movement of the welding member, and the film and the tape are sandwiched and welded by the pair of welding members. As described above, since the tape is clamped by using the power during the movement of the welding member in the film direction, it is not necessary to separately provide a clamp driving source for tape clamping.

Further, like the second means, if a cutting blade is provided at the contact portion between the welding member and the receiving surface of the guide, and a suction portion is further provided at the welding member, the welding member moves in the film direction. During the operation, clamping of the tape, cutting of the clamped tape, holding of the tape after cutting, and welding of the tape and the film can be performed as a series of operations.

[0012]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 schematically shows the overall structure of a processing apparatus including a film-tape welding apparatus according to the present invention, and FIG. 2 shows a film-tape welding apparatus portion of the processing apparatus. It is a right side view.

Reference numeral A indicates a welding device for a film and a tape according to the present invention. A film supply device B for supplying the long film 1 is provided in the front stage of the welding device A, and a film supply device B for supplying the long film 1 is provided in the rear stage of the welding device A for producing processed sausage by filling the processed meat with the long film. A device C is provided. The film supply device B is
It is composed of feed rollers 11a and 11b for continuously feeding the long film 1 extending from the original fabric, and a large number of rollers for guiding the long film 1 to the welding apparatus A of the present invention. The film supply device B has a tension adjusting mechanism 12
Is provided. The tension adjusting device 12 is composed of a swing link 12a that is swingably supported, and rollers 12b and 12c that are supported by the swing link 12a.

In the welding apparatus A according to the present invention, the long film 1 is intermittently sent out by a predetermined length. On the other hand, since the long film 1 is continuously fed out by the feed rollers 11a and 11b, the continuous feeding and the welding device A
The difference in tension of the long film 1 due to intermittent feeding in
The swing link 12 is absorbed by the vertical movement of the swing link 12 due to its own weight.

The filling device C is also provided with a forming member 13 for forming the long film 1 into a tubular shape after the strip-shaped tape 2 is adhered by the welding device A, and processed meat and the like via the filling cylinder 14. And a filling member 15 for filling. When the long film 1 is formed into a tubular shape, the filling member 15 fills the film 1 with processed meat or the like. Thereafter, the ironing roller 16 intermittently squeezes the squeezed portion, the squeezed portion is tightened by the metal wire 4, and further cut by the cutting member 17 to produce sausage or the like.

Between the filling device C and the welding device A, the long film 1 is guided by a large number of rollers. In the filling device C, the long film 1 is continuously sent out.
Therefore, the tension adjusting mechanism 19 is also arranged between the welding device A and the filling device C. Like the mechanism 12, the tension adjusting mechanism 19 includes a swing link 19a that swings by its own weight, and rollers 19b, 1 supported by the swing link 19a.
9c and 19d.

Next, the structure of the film-tape welding apparatus A according to the present invention will be described. 3 is an enlarged front view showing a portion of the welding device A for welding the long film and the strip tape in FIG. 1, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. FIG. 6 is a cross-sectional view taken along the line -V, and FIG.

The welding device A for welding a long film and a strip-shaped tape is constituted by the inside and outside of the right side plate 21 and the left side plate 22 which are provided in parallel, and the periphery thereof. As shown in FIG. 2, both side plates 21 and 22 have a notch (a) in the upper part at the back of the apparatus, and the long film 1 guided from the film supply device B has this notch (a). It is designed to pass over. As shown in FIG. 1, a guide roller 23 is provided above the outside of the left side plate 22, and a film feed roller 24 and a pinch roller 25 that is pressed against the film feed roller 24 are provided above the outside of the right side plate 21. There is. The film feed roller 24 is connected to the clutch brake 26 by a toothed belt or the like, and is further connected to the motor M. The power of the motor M is intermittently transmitted to the film feed roller 24 by the clutch brake 26, and the long film 1 is intermittently fed to the right direction in FIG. 1 by a predetermined length. Also clutch brake 2
By changing the timing of 6, it is possible to set the feed length of the long film 1 once.

As shown in FIGS. 2 and 3, a drive shaft 31 is supported between the side plates 21 and 22, and a sprocket 32 is provided at the end projecting from the right side plate 21.
Is fixed. As shown in FIG. 2, the sprocket 32 is connected to a drive sprocket 34 by a chain 33. The drive sprocket 34 is connected to a motor of the processing apparatus main body, and the drive shaft 31 is continuously rotated clockwise in FIG. 2 by the power of this motor.

As shown in FIG. 2, a support shaft 37 is provided in front of each of the side plates 21 and 22, and the support shaft 37 is provided.
The original fabric 2a of the tape 2 is supported on the. This original 2
The tape 2 extending from a is guided between the side plates 21 and 22 by the guide roller 40, and is sandwiched between the tape feed roller 35 provided inside the side plates 21 and 22 and the pinch roller 36 which is pressed against the tape feed roller 35. The film is intermittently sent to a position facing the lower surface of the long film 1.

As shown in FIG. 4 (IV-IV sectional view of FIG. 3), the mechanism for driving the tape feed roller 35 is arranged outside the right side plate 21. The shaft 35a of the tape feed roller 35 is supported by the side plates 21 and 22 (see FIG. 3). The right end of this shaft 37 is the right side plate 2
1, a one-way clutch 38 is provided at the right end. A fulcrum shaft 39 is provided outside the right side plate 21, and a drive link 41 is rotatably supported by the fulcrum shaft 39. One arm 41 a of the drive link 41 is connected to the one-way clutch 38 via a connecting bar 42. The follower roller 43 is attached to the other arm 41b of the drive link 41.
Is supported. Also, the tip of the arm 41b and the right side plate 2
A spring 44 is hung between the drive link 41 and the drive shaft 1 and the drive link 41 is urged clockwise in FIG. The follow roller 43 is pressed against the first cam 45 by this urging force. The first cam 45 is fixed on the drive shaft 31 at a position aligned with the sprocket 32.

The sprocket 32 drives the drive shaft 31.
4 is driven counterclockwise in FIG. 4, the follow roller 43 is driven up and down within the dimensions of the maximum diameter locus 45a and the minimum diameter locus 45b of the first cam 45, and the drive link 41 swings accordingly. Move. This operation is transmitted to the tape feeding roller 35 via the one-way clutch 38, and the tape feeding roller 35 is intermittently driven only in the counterclockwise direction in FIG. 4, that is, the feeding direction of the tape 2.

A support shaft 47 of the pinch roller 36 is connected to the tip of a roller link 49. Figure 4
As shown in, the base end of the roller link 49 is supported by the shafts 51 on both side plates 21 and 22. The roller link 49 is biased by the force of the spring 52,
This force causes the pinch roller 36 to move the tape feed roller 3
Pressed to No. 5. A handle 53 is fixed to the shaft 51, and the pinch roller 36 can be artificially separated from the tape feed roller 35 by operating the handle 53.

As shown in FIG. 5 (VV sectional view of FIG. 3), the lower guide 5 is provided at an upper position between the side plates 21 and 22.
5 and an upper guide 56 are provided, and a gap between the guides 55 and 56 serves as a supply passage for the tape 2. The lower surface of the left portion of the upper guide 56 in the drawing is a receiving surface 56a.
The tape 2 which is intermittently fed by the tape feeding roller 35 passes through the supply passage between the upper and lower guides 55 and 56 and is guided to the lower surface of the long film 1 which is guided into the notch (a). Guided to the opposite position.

As shown in FIG. 5, a lower electrode 61 as a welding member that moves up and down is provided between both side plates 21 and 22. The lower electrode 61 serves as a negative electrode for welding the long film 1 and the tape 2 at a high frequency. The tape pressing surface 61a is provided on the upper surface of the lower electrode 61.
Is formed one step higher, and a cutting blade 61b is integrated with the edge portion at the right end in the figure. Lower electrode 6
1 moves upward, the cutting blade 61b and the tip surface of the upper guide 56, that is, the edge of the receiving surface 56a, causes the tape 2
Is cut into strips.

Further, the lower electrode 61 has an air lead-out hole 61.
c is provided, and an air suction device 65 is connected to this air outlet hole 61c via an automatic valve 64. As shown in FIG. 7 (a perspective view showing a tape welding portion), a tape suction hole 61d is formed in the tape pressing surface 61a. When the valve 64 is opened, the tape suction hole 61d functions to suck the tape 2.

A clamp member 62 is slidably supported on the lower electrode 61 in the vertical direction, and the clamp member 62 is urged upward by the spring 63 with respect to the lower electrode 61. When the lower electrode 61 rises, the clamp member 62 first comes into pressure contact with the receiving surface 56a of the upper guide 56 to clamp the tape 2.

The lower end of the lower electrode 61 is connected to a lifting shaft 66. The elevating shaft 66 is slidably supported by a bearing 67 provided between the side plates 21 and 22. The lower end of the elevating shaft 66 is connected to the drive link 68. The drive link 68 is rotatably supported by a shaft 69 provided on both side plates 21 and 22. A follow roller 71 is supported by the drive link 68, and the drive link 68 is biased clockwise by a spring 72 in FIG. The follow roller 71 is pressed against the second cam 73 by this biasing force. The second cam 73 is fixed to the drive shaft 31.

The drive shaft 31 is driven by the sprocket 32.
5 is driven counterclockwise in FIG. 5, the follow roller 71 is driven up and down within the dimensions of the maximum diameter locus 73a and the minimum diameter locus 73b of the second cam 73. In response to this, the drive link 68 swings, and the lower electrode 61 is driven up and down.

Further, as shown in FIGS. 3 and 5, the lower electrode 6
The upper electrode 81 as the other welding member faces the one. The upper electrode 81 is a positive electrode for high frequency welding. The lower surface of the upper electrode 81 serves as a protruding pressing portion 81a. The welded portion 3 of the long film 1 and the tape 2 (see FIG. 11) is determined by the shape of the pressing portion 81a. As shown in FIG. 7, in this embodiment, the pressing portion 81a has an elongated shape having sharp corners at both ends.

The upper electrode 81 is held by a holding member 82. A shaft 83 is provided on the holding member 82.
3 is slidably held by the electrode holder 84. A spring 85 for a damper is provided on the outer circumference of the shaft 83.

As shown in FIG. 6 (a view from the arrow VI in FIG. 3),
The mechanism for raising and lowering the electrode holder 84 is provided outside the left side plate 22. The lower end of the electrode holder 84 has a lifting shaft 95.
Are linked to. The lifting shaft 95 is slidably supported by a bearing portion 86 provided on the left side plate 22.
The lower end of the lifting shaft 95 is connected to the drive link 8 via the connecting bar 87.
Connected to eight. This drive link 88 is used for the left side plate 2
It is rotatably supported by a shaft 89 provided on the second shaft 2. A follow roller 91 is supported by the drive link 88, and the drive link 88 is moved by a spring 92 to a sixth position.
It is biased counterclockwise in the figure. The follow roller 91 is pressed against the third cam 93 by this urging force. The third cam 93 is fixed to the drive shaft 31.

The drive shaft 31 is driven by the sprocket 32.
6 is driven counterclockwise in FIG. 6, the follow roller 91 is moved up and down within the dimensions of the maximum diameter locus 93a and the minimum diameter locus 93b of the third cam 93. In response to this, the drive link 88 swings, the electrode holder 84 is driven up and down, and further the upper electrode 81 moves up and down.

Next, the operation will be described. FIG. 7 is a perspective view showing a portion where the tape 2 cut into strips is bonded to the long film 1, and FIG. 8 is a time chart showing the operation timing of each member.

The long film 1 fed from the film supply device B is guided onto the notches (a) of the side plates 21 and 22 of the welding device A, and is stretched between the guide roller 23 and the film feed roller 24. Set up. Film feed roller 24
Is intermittently driven by the timing of the clutch brake 26 (see FIG. 1), the long film 1 is sent out in a predetermined length in the arrow direction in FIG. 7, and the sent long film 1 is at that position. Stop for a predetermined time.

Meanwhile, the power is continuously transmitted to the sprocket 32 by the chain 33 (see FIG. 2), and the drive shaft 31
Are continuously rotated. The first cam 45, the second cam 73, and the third cam 9 fixed to the drive shaft 31.
In accordance with the shape of No. 3, each member is driven in conjunction with each other at the timing shown in the time chart of FIG.

First, the rotation of the first cam 45 depends on the drive link 4.
It is changed to the swing of 1, and this movement is one way clutch 3
8 and the tape feed roller 35 is intermittently driven. As a result, the tape 2 extending from the original 2a (see FIG. 2) is fed between the lower guide 55 and the upper guide 56, and when the feeding of the long film 1 is stopped, the tip of the tape 2 is moved by a certain amount to the lower electrode. It is in a state of protruding above 61 and facing the lower surface of the long film 1. In this state, tape feeding is stopped for a fixed time.

The rotation of the second cam 73 provided between the side plates 21 and 22 is changed into the swinging motion of the drive link 68 shown in FIG.
Is driven up and down. On the other hand, the rotation of the fourth cam 93 provided on the outer side of the left side plate 21 is converted into the swing motion of the drive link 88, and the electrode holder 84 is driven up and down via the lifting shaft 95. As shown in FIG. 8, due to the shapes of the second cam 73 and the third cam 93, the lower electrode is changed depending on the timing after the feeding of the long film 1 is stopped and the feeding of the tape 3 onto the lower electrode 61a is stopped. 61 goes up, and at the same time, the electrode holder 84 goes down.

When the lower electrode 61 rises, first, the tip of the tape 2 is pressed against the receiving surface 56a of the upper guide 56 and clamped by the clamp member 62. The lower electrode 61 rises later than the clamp member 62, and when ascending, the cutting edge 61b provided on the edge portion of the upper surface of the lower electrode 61 and the edge portion of the edge of the receiving surface 56a of the upper guide 56 are aligned. The tape 3 is cut into strips.

As shown in FIG. 8, the automatic valve 64 (see FIG. 5) is opened for a certain period of time before and after the lower electrode 61 starts to rise, and the tape suction hole 61d on the upper surface of the lower electrode 61 is opened by the air suction device 65. Air is sucked in from. Due to this suction force, the tip portion of the tape 3 is held by the lower electrode 61 immediately before being cut by the cutting blade 61b. Therefore, the tape 3 cut into strips rises while being held by the lower electrode 61 by air adsorption, and when the lower electrode 61 rises to the top dead center, the strip-shaped tape 3 is attached to the lower surface of the long film 1. To be
On the other hand, when the upper electrode holder 84 descends, the pressing portion 81 a of the upper electrode 81 held by the upper electrode holder 84 causes the long film 1 and the strip-shaped tape 3 to press the pressing surface 61 of the lower electrode 61.
It is pressed against a. Then, a high frequency is applied to both electrodes 61 and 81, and the strip-shaped film 3 is bonded to the long film 1. The automatic valve 64 is closed in the middle of this sealing operation, and suction by air is stopped.

After that, the lower electrode 61 and the upper electrode 81 are separated from each other at the timing of the cams 43, 73, and 93. Then, the lengthy film 1 is further fed by a fixed amount, and the leading end of the tape 2 is fed again, and the above operation is continuously performed.

By the above operation, the strip-shaped tape 2 is adhered to the long film 1 sent from the fusing device A at regular intervals as shown in FIG. The shape of the welded portion 3 between the long film 1 and the strip-shaped tape 3 is
Due to the shape of the pressing portion 81a of the upper electrode 81,
In the illustrated embodiment, the elongated tape-shaped tape 2 is provided with the elongated seal portion 3 at the center thereof.

In the processing apparatus shown in FIG. 1, the strip tape 2 is used.
The long film 1 to which is adhered is sent to the filling device C,
The filling device C fills the processed meat to produce a stick-shaped sausage. In FIG. 9, the portion of length L sandwiched by the alternate long and short dash line is used as a packaging film for wrapping one sausage. Therefore, the sausage discharged from the filling device C is, as shown in FIG. 11, provided with the strip-shaped tape 3 only at one end in the longitudinal direction. As described above, by using the strip-shaped tape 2 as a cut tape and pulling it up, the film 1 can be easily peeled off as shown in FIGS. 13 and 14.

Since the shape of the welded portion 3 of the strip-shaped tape 2 and the long film 1 is determined by the shape of the pressing portion 81a of the upper electrode 81, this pressing portion 81a
It is possible to change the shape of the welding portion 3a to a welding portion 3a having a shape shown by reference numeral 3a in FIG. 10 or another arbitrary shape.

It is also possible to shorten the bonding interval of the strip-shaped tape 2 to the long film 1 so that the tape 2 is provided at both ends of the sausage. The long film 1 may be a packaging film for processed foods other than sausage, or a packaging film for wrapping items other than processed foods.

In the illustrated embodiment, since it is assumed that a vinylidene chloride resin film is used as the long film 1, high frequency welding is adopted as a means for adhering the strip tape 2. Even if this adhesion means is heat welding or the like, it can be carried out.

[0047]

As described above, according to the present invention, the tape is clamped by the clamp member that moves together with the welding member in the movement of the welding member toward the film, and the tape is cut in this clamped state. It Then, the cut tape is directly applied to the film by the welding device and welded. Therefore, it is not necessary to separately provide a drive source for driving the clamp member, and the mechanism can be simplified and can be configured in a small space.

According to the second aspect of the invention, clamping and cutting of the tape, holding of the cut tape, and welding are performed as a series of operations. Further, since the cutting blade is provided at the contact portion between the welding member and the guide, it is not necessary to separately provide the cutting blade and its drive mechanism.

[Brief description of drawings]

FIG. 1 is an apparatus configuration diagram showing an outline of a processing apparatus equipped with a film-tape welding apparatus according to the present invention;

FIG. 2 is a right side view of FIG. 1 showing a welding device portion of a long film and a strip tape;

FIG. 3 is an enlarged front view of a welding device for a long film and a strip tape in the device of FIG. 1;

4 is a sectional view taken along the line IV-IV in FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a view from the arrow VI in FIG. 3 (left side view),

FIG. 7 is a perspective view showing an adhesive portion of a strip-shaped tape to a long film,

FIG. 8 is a time chart showing the operation timing of each member,

FIG. 9 is a plan view showing a state where a strip-shaped tape is adhered to a long film,

FIG. 10 is a plan view showing a modified example of FIG.

FIG. 11 is a front view showing a case where the long film is used as a sausage packaging film, as an example.

FIG. 12 is a back view of FIG.

13 is a partially enlarged view of FIG. 11 showing a strip-shaped tape portion,

FIG. 14 is a partially enlarged view showing a state in which a sausage packaging film is peeled off with a strip tape.

[Explanation of symbols]

 Adhesion device for A film and tape 1 Long film 2 Tape 21, 22 Fusing device A side plate 24, 25, 26, M Film feeding mechanism 31 Drive shaft 45 First cam 35, 36, 38 for tape feeding operation 41 tape feeding mechanism 56 upper guide 56a receiving surface 61 lower electrode (welding member) 61a pressing surface 61b cutting blade 61d tape suction hole 62 clamp member 73 second cam for raising the lower electrode 81 upper electrode (welding member) 93 upper electrode Third cam to lower

Claims (2)

[Claims] 1. A pair of welding members provided to face each other at a position sandwiching the film, a guide positioned on one side of the film to guide the tape onto one welding member, and the one welding member. Drive mechanism for moving in the direction, a clamp member that moves in the film direction together with the welding member and presses the tape against the receiving surface of the guide, and the tip portion is sandwiched between the clamp member and the receiving surface, and the tip portion is the welding member and the film. And a cutting blade for cutting the tape extending between the welding member and the clamp member. 2. The cutting blade is provided at a contact portion between an edge portion of the welding member and an edge portion of the receiving surface of the guide, and when the welding member moves in the film direction, the tape is provided by the clamp member and the receiving surface. The tape is cut by the cutting blade after the tape is clamped, and the welding member is provided with a suction portion for holding the cut tape.
A welding device for the film and tape described.