JP2001151212A - Printer for three-sided fin seal film wrapping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To locate a printing position with a simple mechanism. SOLUTION: The three-sided fin seal film wrapping machine includes a printing section 101 having a print head for printing on a wrapping film via a print tape and a stamp base 102 for supporting the wrapping film when the print head is pressed against the film via the tape. The printing section 101, is slidably mounted on two first longitudinal beams 103A, 103B which are placed in parallel to a direction orthogonal to a transfer direction X of the film. The stamp base 102 is slidably mounted on two second longitudinal beams 104A, 104B placed parallel to the first beams 103A, 103B oppositely to the print head and the print tape. The first and second longitudinal beams 103A, 103B, 104A, 104B are slidably mounted on two lateral beams 105A, 105B placed in parallel to the transfer direction of the wrapping film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for a three-side seal film packaging machine, and more particularly to a printer for a three-side seal film packaging machine which prints on a packaging film before packaging.

[0002]

2. Description of the Related Art Conventionally, an object to be packaged is wrapped in a packaging film, and the vertical dimension of the object to be packaged is reduced by welding of a vertical sealer and welding and cutting of a horizontal sealer (end sealer). 2. Description of the Related Art A film wrapping machine for forming a three-side sealed zipper of a predetermined length according to the related art is known. In many cases, the film packaging machine is provided with a printing device for printing the date of manufacture, net expiration date, code number, etc. on the packaging film.

In such a printing apparatus, any printing apparatus can be slid and moved in the width direction of the packaging film when positioning the printing film at an arbitrary printing position. There was no one that could be easily positioned. Further, such a printing apparatus having a complicated positioning mechanism is suitable for continuous large-volume packaging, but is not always necessary for intermittent packaging.

Further, in the conventional printing apparatus, the gap between the printing unit and the stamp table is narrow, so that it is difficult to perform the film passing operation.

Further, when a printing device is incorporated in a film packaging machine, the number of print positioning rollers, film pull-in rollers, and the like of tension rollers and delivery rollers is disadvantageously increased.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and it is an object of the present invention to provide a printing apparatus for a three-side seal film packaging machine which can easily determine a printing position by a simple mechanism. With the goal.

[0007]

In order to achieve the above object, a printing apparatus for a three-way seal film packaging machine according to the present invention is provided. A printing device used in a three-side seal film packaging machine for forming a three-side seal wrapper having a predetermined wrapper length by welding and cutting off a horizontal sealer. This printing device prints a packaging film with a printing tape interposed therebetween. A printing unit having a print head for printing, and a stamp base for supporting the packaging film when the print head is pressed against the packaging film via the printing tape, and the printing unit is arranged in a direction orthogonal to the transport direction of the packaging film. Slidably mounted on the first two vertical beams arranged in parallel with each other, and the stamp base is parallel to the first two vertical beams facing the print head and the print tape. Slidably mounted on the placed second two vertical beams, and the first and second two vertical beams are slid on two horizontal beams arranged in parallel with the transport direction of the packaging film. It is freely attached.

According to such a printing device for a three-way seal film packaging machine, the printing unit and the stamp table can be moved in a direction perpendicular to the transport direction of the packaging film by sliding on the vertical beam. Can be moved in the transport direction of the packaging film by sliding on the horizontal beam. Further, the printing unit and the stamp table can be moved separately in a direction orthogonal to the transport direction of the packaging film.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a printing apparatus for a three-side seal film packaging machine according to the present invention will be described with reference to the drawings.

As shown in FIG. 3, a horizontal pillow three-way sealing film packaging machine to which the printing apparatus of the present invention is applied is formed by wrapping an object to be wrapped in a wrapping film 50 by a former 2 and welding it by a vertical sealer 4 to a center. It is conveyed on the conveyor 3, and after that, after the feeding operation of the packaging film 50 and the center conveyor 3 is stopped, the horizontal sealer 5 is welded and cut to form a three-side sealed wrapper having a predetermined wrapping length. Before encapsulation, the printing device 1 prints the date and time of manufacture on the packaging film 50,
The intermittent feed is performed after the net expiration date, code number, etc. are printed. In addition, the three-side seal film packaging machine includes a supply conveyor 6 for supplying the packaged object 51 to the former 2 and a discharge conveyor 7 for discharging a three-sided seal wrapper (not shown) in which the packaged object 51 is packaged. Have. The vertical sealer 4, the horizontal sealer 5, the center conveyor 3, and the discharge conveyor 7 performing such a packaging operation are driven by an electric motor drive unit 8, and the electric motor drive unit 8, the printing device 1, and the supply conveyor 6 are controlled by a control panel 9 Is controlled by a control circuit (not shown).

Such a vertical sealer 4, a horizontal sealer 5, a center conveyor 3, a supply conveyor 6, and a discharge conveyor 7
The main body 10 on which the like is installed is a plurality of T-shaped joints 1.
1 connects a plurality of beams 12 of different lengths to form a base frame.

The vertical sealer 4 has a catch roller composed of a pair of rotary bodies and a vertical sealer surface part (not shown) composed of a pair of rotary bodies (not shown), and is packaged by the rotational movement of the pair of vertical sealer surfaces. The film 50 is welded, is driven by the power from the electric motor drive unit 8, and is fixed to the main body 10.

The horizontal sealer 5 comprises a pair of upper and lower sealers 5a and 5b pivotally connected at a pivot point O, and a crank mechanism (not shown) for driving the pair of upper and lower sealers 5a and 5b so as to move away from each other. And a link connecting mechanism (not shown) for rotating the crank mechanism in response to the vertical movement of the horizontal sealer from the electric motor drive unit 8 for transmitting power to the horizontal sealer. Power from the unit 8 is transmitted via the link connection mechanism to drive the crank mechanism. By reciprocating the pair of upper and lower sealers 5a, 5b so as to approach and separate from each other, the packaging film 50 can be welded and cut for each three-side seal wrapper. Such a horizontal sealer 5 extends vertically over the two upper vertical beams 12 of the main body 10 (transport direction X of the packaged object).
Is fixed to the horizontal sealer mounting table 5c for reciprocating movement.

The supply conveyor 6 is installed on the upstream side of the main body 10 so as to be located below the former 2, and is controlled by a control circuit of the control panel 9 in synchronization with the moving speed of the packaging film 50.

The center conveyor 3 is fixed to the main body 10 so that products can be transported between the vertical sealer 4 and the horizontal sealer 5, and is driven by power from an electric motor drive unit 8. Further, since the center conveyor 3 is connected to the discharge conveyor 7 fixed on the downstream side of the main body 10, the three-side seal wrapper can be smoothly transported from the center conveyor 3 to the discharge conveyor 7.

The electric motor drive section 8 employs a double motor system having a first electric motor for driving the vertical sealer 4, the center conveyor 3, and the discharge conveyor 7, and a second electric motor for driving the horizontal sealer 5. Have been. Also,
The electric motor drive unit 8 includes a sequence controller having a built-in motor switching control circuit that switches between the two motors according to the drive timing of the vertical sealer 4 and the horizontal sealer 5. The motor switching control circuit, based on a wrapper length setting signal output from a wrapper length adjusting means (not shown) for setting a predetermined wrapper length in accordance with the vertical dimension of the article to be packaged,
The vertical sealer 4, the center conveyor 3, and the horizontal sealer 5 are driven.

As shown in FIG. 2, the printing unit 1 includes a printing unit 1
01 and a stamp base 102, and the printing unit 101 is slidably disposed on the first two vertical beams 103A and 103B arranged in parallel in a direction orthogonal to the transport direction X of the packaging film. Is slidably disposed on the second two vertical beams 104A and 104B arranged in parallel with the first two vertical beams 103A and 103B so as to face the printing unit 101. As shown in FIG. 1, the first and second two vertical beams 103A, 103B, 104A and 104B slide on two horizontal beams 105A and 105B arranged in parallel with the transport direction X of the packaging film. It is freely attached. The two lateral beams 105A and 105B are
It is fixed to a roller frame 14 fixed to the mounting beam 13 of the main body 10 so as to be located above the vertical sealer 4 (FIG. 3).

As shown in FIGS. 4 and 5, the printing unit 101
A print head 106 for printing on the packaging film via the print tape 52, a print tape feeding means 107 for supplying the print tape 52 to the print head 106, and a print for winding the print tape 52 printed by the print head 106 Tape winding means 108 and printing tape feeding means 10
7 and the printing tape winding means 108 between the printing tape 5
And a print tape feeding means 109 for moving the print head 2. Note that the printing apparatus frame 110 is
a, a middle frame 110b and a rear frame 110c.
Cover c is covered with cover 110d. Further, the front frame 110a, the middle frame 110b, and the rear frame 110c are respectively provided with sliding bearing bushes 111.
A, 111B, 112A, and 112B are provided and slidably fitted to the first two vertical beams 103A and 103B (FIGS. 1 and 2). Can be slidably moved with respect to the two vertical beams 103A and 103B. A stopper screw 114 is screwed into the slide bearing bush 111B so that it can be inserted into the bush 111B.
Of the vertical beam 103B.

As shown in FIG. 6, the print head 106 includes a type folder 106b for fixing the type 106a, a heater block 106d in which a heater 106c for heating the type 106a is incorporated and fixed to the type folder 106b.
Heater block 10 to which type folder 106b is fixed
6d and an air cylinder 106f fixed via a heat insulating fixing seat 106e. Air cylinder 10
Reference numeral 6f denotes a rotationless cylinder, which can move up and down without rotating the character 106a. Further, the air cylinder 106f is connected to the front frame 1 of the printing apparatus frame 110.
It is fixed between 10a and the middle frame 110b (FIG. 5).

The printing tape feeding means 107 is shown in FIGS.
As shown in the figure, the delivery reel body 107a into which the printing tape paper tube 53 around which the printing tape 52 is wound is inserted, and the printing tape paper tube 5 inserted into the delivery reel body 107a.
3 for fixing the front frame 11
It is fixed to a guide pin 107c rotatably supported by the middle frame 110b and the rear frame 110c so as to be located between the center frame 0a and the middle frame 110b (FIGS. 4 and 5). A band brake 107e is disposed between the middle frame 110b and the rear frame 110c so as to be in close contact with a brake sleeve 107d fixed to the guide pin 107c, and a tension spring 107f fixed at a predetermined position of the printing device frame 110. Hanged on. A friction force is generated between the brake sleeve 107d and the band brake 107e by the spring force of the tension spring 107f. Further, the payout reel body 107a
An O-ring 107g is fitted around the groove so as to absorb variations in the inner diameter of the print tape paper tube 53 so that it can be set securely.

The printing tape winding means 108 is shown in FIGS.
0, a take-up reel body 108a into which a print tape paper tube 54 for taking up the print tape 52 is inserted.
And a cover 108b for fixing the print tape paper tube 54 inserted into the take-up reel body 108a. The cover 108b is pivoted to the middle frame 110b and the rear frame 110c so as to be located between the front frame 110a and the middle frame 110b. It is fixed to a freely supported guide pin 108c. A driven pulley 108d is formed coaxially with the reel body 108a. The driven pulley 108d is connected to a tape feed roller 1 of a print tape feeding means 109 described later.
An endless belt 109p is wound around a drive pulley 109o formed coaxially with the drive 09b. Further, a groove is provided in the take-up reel body 108a, and an O-ring 108e for absorbing a variation in the inner diameter of the print tape paper tube 54 is fitted therein.

The printing tape feeding means 109 is shown in FIGS.
2. As shown in FIG. 13 (a), a tape feeder fixed to a guide pin 109a rotatably supported by the middle frame 110b and the rear frame 110c so as to be located between the front frame 110a and the middle frame 110b. A roller 109b and a pressure lever 109d fixed to a guide pin 109c rotatably supported by the middle frame 110b and the rear frame 110c so as to be located between the front frame 110a and the middle frame 110b. Tape feed roller 1 at one end
A pressure roller 109e for pressing against 09b is axially mounted on a guide pin 109g via a roller clutch 109f that rotates only in one direction. This guide pin 109
g, one end of a tension spring 109h is hooked, and the other end of the tension spring 109h is fixed to a predetermined position of the printing apparatus frame 110 so that the pressure roller 109e always presses against the tape feed roller 109b. I have. The tape feed roller 109b and the pressure roller 109
Since the surface of e is knurled,
The tape feed roller 109b and the pressure roller 109
The printing tape 52 sandwiched between the e can be reliably sent out.

A swing arm 109i is fixed to a guide pin 109a located between the middle frame 110b and the rear frame 110c via a roller clutch 109j that rotates only in one direction. The swinging end of the swinging arm 109i and the heat insulating block 106e of the print head 106
And a predetermined position of the middle frame 110b are connected by a link mechanism. Specifically, short link 109k
The short link 109l is attached to the swing end of the swing arm 109i, and the short link 109l is attached to the heat insulating fixed seat 106e of the print head 106.
m are rotatably connected to predetermined positions of the middle frame 110b, respectively.
9m is rotatably connected to the long link 109n.
Such a link mechanism is set so as to convert the vertical movement of the air cylinder 106f into an arc movement via the heat insulating block 2b. Therefore, the air cylinder 106
When f is lowered, the roller clutch 109j swings the swing arm 109i counterclockwise, so that the tape feed roller 109b rotates in the same direction. At this time, the pressure roller 109e that has been pressed is also used as the tape feed roller 109.
The roller rotates clockwise due to the rotation of b, but does not rotate counterclockwise due to the clutch function of the roller clutch 109f.

As shown in FIG. 5, the printing section 101 is provided so that the printing tape 52 does not meander between the printing tape feeding means 107 and the printing tape winding means 108.
Between the print tape feeding means 107 and the print head 106, and between the print tape winding means 108 and the print head 1
06, guide rollers 113 are provided respectively. The guide roller 113 is used for the front frame 11
0a and the middle frame 110b so as to be positioned between the front frame 110a and the middle frame 110b.

As shown in FIGS. 14 and 15, the stamp base 102 is a slide bearing bush 102a ₁ , 1 which is slidably fitted to the second two vertical beams 104A, 104B.
02a ₂ provided with the stamp body 102b, a heat-resistant rubber 102c attached to the press-contact side of the stamp body 102b with the printing unit 101, and a printing pressure for adjusting the contact pressure of the heat-resistant rubber 102c and the print 106a of the printing unit 101. And a fine adjustment mechanism 102d. Printing pressure differential adjusting mechanism 102d includes a pressure seat 102d ₁ for pressing the heat-resistant rubber 102c to print 106a, is composed of a screw 102d ₂ Metropolitan screwed to the stamp body 102b is fixed to the press seat 102d _1, the screw 102d ₂ By tightening or loosening, the contact pressure between the heat-resistant rubber 102c and the print character 106a can be adjusted. The stamp body 1
The 02b and sliding bearing bush 102a ₂ stopper screw 115 is screwed to be inserted, it is possible to fix the inkpad 102 by tightening the second longitudinal beam 104B.

The first vertical beams 103A and 103B on which the printing unit 101 is slidably mounted, and the second vertical beam 104 on which the stamp base 102 is slidably mounted.
As shown in FIG. 1, A and 104B have both ends fixed to the print positioning bases 121A and 121B, respectively. The print positioning bases 121A and 121B include:
Sliding bearing bushes 122A and 122B are provided to be slidably fitted to the two transverse beams 105A and 105B, respectively. Thus, the printing unit 101 and the stamp table 102 can be moved in the transport direction of the packaging film 50. Note that the print positioning base 121A,
A stopper screw 116 is threadably engaged with each of the sliding bearing bushes 122A and 122B of the sliding bearing 121B, and the printing unit 101 and the stamp base 102 can be fixed to the two horizontal beams 105A and 105B by tightening.

FIG. 3 shows a three-side seal film packaging machine.
As shown in FIG. 1, in order to supply the packaging film 50 to the printing apparatus 1, the film supply unit 20 for setting the film roll 21 around which the packaging film 50 is wound is provided by the main body 10.
A swing roller 22 is provided between the film supply unit 20 and the printing device 1 to apply a necessary tension for bag making of the packaging film 50 (FIG. 3).

As shown in FIG. 16, the film supply unit 20 includes a film feeding roller 20a for mounting a film roll 21 and a film positioning roller 20b.
And a motor 2 for rotating the film feeding roller 20a
0c, and a width determining collar 20d for regulating the film width is fixed to both ends of the film positioning roller 20b. Such a motor 20c of the film supply unit 20
Is driven by a signal from a detection unit (not shown) such as a sensor for detecting the upper / lower limit position of the swing roller 22 described later or a limit switch.

The swing roller 22 temporarily stores the packaging film 50 drawn from the film roll 21 and supplies the stored packaging film 50 for each package.
Specifically, when the packaging film 50 stored by the swing roller 22 is consumed by the three-side seal film packaging, the swing roller 22 is lifted upward.
When the swing roller 22 reaches the upper limit position by the lifting operation, the motor 2 of the film supply unit 20 is moved from the detection unit.
Since the drive signal is output at 0c, the motor 20c is driven. Thereby, the film roll 21 is rotated, and the packaging film 50 is supplied to the swing roller 22.
When the packaging film 50 is supplied to the swing roller 22, the swing roller 22 descends. When the swing roller 22 reaches the lower limit position by this lowering operation, a stop signal is output from the detection unit to the motor 20c, and the motor 20c stops. Thereby, the packaging film 50 necessary for packaging is stored.

As described above, the predetermined tension can be applied to the packaging film 50 by the swing roller 22 without being affected by the draw-out resistance that changes due to the difference in the winding diameter of the packaging film 50 pulled out from the film roll 21. Therefore, it is possible to prevent the occurrence of the dullness due to the inertia of the film due to the repetition of the operation and the stop, and to prevent the shock when the restart is performed in the dubbed state. The pullout resistance at this time can be set by the weight of the swing roller 22.

Further, between the printing device 1 and the former 2, there is provided an arm portion 30 for setting an angle of entry of the packaging film 50 into the former 2 necessary for bag making.

The wrapping operation of the three-side seal film wrapping machine configured as described above will be described below, focusing on the printing apparatus 1.

First, the operator (operator) takes out the packaging film 50 from the film roll 21 of the film supply section 20, and connects the two guide rollers 14a and 14b (FIGS. 1 and 3) on the upstream side of the roller frame 14. It is wound around the swing roller 22 alternately, so that the necessary tension can be applied to the bag making of the packaging film 50 being supplied by the swing roller 22. In order to pass the packaging film 50 wound alternately between the printing unit 101 of the printing apparatus 1 and the stamp base 102, for example, the stamp base 10
By loosening the stopper screw 115, the stamp base 102 is moved on the second vertical beams 104A and 104B so that the printing unit 101 and the stamp base 102 are not arranged to face each other. Thereby, the printing unit 101 and the stamp table 10
Since the gap between the print head 106 and the print head 106 can be easily increased, the work of passing through the film and replacing the print 106a of the print head 106 can be performed easily.

In this state, the packaging film 50 is
Printing tape feeding means 107, printing tape feeding means 10
9 and the print tape 52 set in the print tape winding means 108, and the roller frame 14 is pulled out.
To the guide roller 14c on the downstream side. The printing tape 52 can be set by setting the printing tape paper tube 53 around which the printing tape 52 is wound to the printing tape feeding means 107 (FIG. 8), and the printing tape paper tube 54 for winding the printing tape 52 to the printing tape winding tube. 10 (FIG. 10), and the printing tape paper tube 5 of the printing tape feeding means 107 is set.
The print tape 52 fed from Step 3 is wound around the two guide rollers 14a and 14b and positioned on the print head 106. Further, the pressure roller 109 is pressed by the pressure lever 109d.
e is separated from the tape feed roller 109b, and the print tape 52 is moved to the tape feed roller 1 of the print tape feed means 109.
The print tape 52 is fixed to the print tape paper tube 54 of the print tape winding means 108 by passing the print tape 52 between the print tape 09b and the pressure roller 109e. Then, when the hand is released from the pressing lever 109d, the pressing roller 109e is pressed against the tape feed roller 109b by the spring force of the tension spring 109h,
The setting of the printing tape 52 is completed.

As described above, the guide roller 14c on the downstream side
Is wound around the guide roller 30a of the arm 30 and guided to the former 2, and is guided from the former 2 to the vertical sealer 4 in advance, and the former is used to cover the packaged object with the packaging film 50. Prepare a three-sided seal zipper. Further, the printing unit 101 and the stamp base 102 of the printing apparatus 1 are positioned. Specifically, the printing unit 101
And the stopper screws 114 and 11 of the stamp base 102
5, the printing unit 101 and the stamp table 102 are moved to predetermined positions on the second vertical beams 104A and 104B and fixed with the stopper screws 114 and 115, respectively. Complete positioning. Next, the stopper screws 116 of the positioning bases 121A and 121B are loosened, and the printing unit 101 and the stamp table 102 are moved to predetermined positions on the two horizontal and vertical beams 105A and 105B, and are fixed by the stopper screws 116. ,
The positioning of the packaging film 50 in the transport direction is completed. The heaters (not shown) of each sealer are energized in advance and the temperature is controlled so that the packaging film 50 can be welded by the vertical sealer 4 and the horizontal sealer 5.

When the operation button (not shown) of the three-side seal film packaging machine on which the packaging film 50 and the printing tape 52 are set as described above is depressed, the control panel 9 controls the supply conveyor 6 and the first of the electric motor drive unit 8. A drive signal is output to the electric motor of. The supply conveyor 6 conveys the placed packaged object 51 to the former 2 based on the drive signal, and wraps the packaged object 51 with the packaging film 50 supplied from the swing roller 22 via the guide roller 30 a of the arm 30. I do. In addition, the rotation of the first electric motor drives the vertical sealer 4 and the center conveyor 3, and the packaging film 50 wrapped by the former 2 is welded to the pair of vertical sealer surfaces of the vertical sealer 4 and transported by the center conveyor 3. Move in direction X.

When the wrapping film 50 and the packaged object 51 have moved by the predetermined wrapping length, the supply conveyor 6 is stopped based on the wrapping length setting signal output from the wrapping length adjusting means, and the electric motor driving unit 8 controls the motor switching. The circuit stops the first electric motor and rotates the second electric motor. Thus, in a state where the packaged object 51 and the packaging film 50 are stopped, the power of the second electric motor is transmitted to the crank mechanism via the link connecting mechanism of the horizontal sealer 5, and the pair of upper and lower sealers 5a, 5b Since the package film 50 reciprocates so as to approach and separate from each other, the packaging film 50 can be welded and cut at a predetermined position.

In the three-side seal film packaging machine, a printing signal is output from the control circuit of the control panel 9 to the printing device 1 based on the packaging length setting signal output from the above-described packaging length adjusting means. When a print signal is output from the control circuit of the control panel 9 to the printing apparatus 1, the air cylinder 106 f of the print head 106 of the printing unit 101 rises, and the type 106 a of the print head 106 and the heat-resistant rubber 102 c of the stamp table 102 Then, the packaging film 50 and the printing tape 52 are pressed against each other, and the date of manufacture, net expiration date, code number, etc. are printed on the film 50 (FIG. 17B).

After printing, when the air cylinder 106f of the print head 106 descends, the print 106a and the heat-resistant rubber 102
17c (FIG. 17 (a)), and the short link 109k of the long link 109n is centered on the connecting portion of the short link 109m of the long link 109n constituting the link connecting mechanism.
Of FIG. 1 descends while moving in an arc (FIGS. 11 and 1).
3 (a)). As a result, the swing arm 109i connected to the short link 109k rotates counterclockwise, so that the tape feed roller 109b fixed to the guide pin 109a via the roller clutch 109j also rotates counterclockwise. Therefore, the print tape 52 sandwiched between the tape feed roller 109b and the pressure roller 109e can be sent to the downstream side (FIG. 13B). The tape feed amount L is determined according to the number of prints such as the date of manufacture, net expiration date, and code number (FIG. 13C).

When the tape feed roller 109b rotates counterclockwise, the take-up reel body 108a also rotates counterclockwise by the endless belt 109p, so that the used print tape 52 sent from the print head 106 is used.
Can be wound up and collected. At this time, the driving pulley 109o of the printing tape feeding means 109 rotates the driven pulley 108d of the printing tape winding means 108 so that the winding is performed with a larger winding amount than the tape feeding amount sent from the printing tape feeding means 109. The diameter is set larger. This is because if the amount of winding by the printing tape winding means 108 is smaller than the amount of tape feeding by the printing tape feeding means 109, it will not be possible to wind the tape securely. Further, the winding amount of the print tape paper tube 54 inserted into the take-up reel body 108a increases because the winding diameter increases as the print tape 52 is wound.
e and the slip generated between the print tape paper tube 54 and
The amount of overdrawing can be kept constant.

As described above, a three-sided seal wrapper having a predetermined wrapper length is formed by welding and cutting the horizontal sealer 5 and simultaneously printed on the wrapping film 50 by the printing device 1, and the three-sided seal wrapper is further discharged from the discharge conveyor 7. After discharging, one cycle of the packaging operation is completed.

The electric motor driving section 8 of the above-described three-side seal film packaging machine employs a double motor system. However, the present invention is not limited to this, and the electric motor driving section 8 can be driven by one electric motor using an electromagnetic clutch. Good.

In the above-described three-side seal film packaging machine, the description has been given of the horizontal forward pillow three-side seal film packaging. However, the present invention can be similarly applied to the horizontal reverse pillow three-side seal film packaging. In this case, since the packaging film is supplied from the lower portion, the printing device, the film roll, and the like are installed at the lower portion of the main body.

Further, the above-described three-side seal film packaging machine employs an intermittent method in which the packaging film and the packaging film are stopped, and then the packaging film is welded and cut by a horizontal sealer. A continuous type in which the packaging film is welded and cut by a horizontal sealer while the article and the packaging film are being conveyed may be used.

[0045]

As described above, according to the printing apparatus for a three-way sealing film packaging machine of the present invention, the printing section and the stamp table are slid on the vertical beam to be orthogonal to the transport direction of the packaging film. Can be moved in the same direction as the package film, and can be moved in the direction of the packaging film by sliding on the horizontal beam, so that positioning can be performed easily, and even people who are unfamiliar with the machine can print without worry. Can change the position.

Further, since the printing unit and the stamp table can be moved separately in the direction orthogonal to the transport direction of the packaging film, the gap between the printing unit and the stamp table can be widened and the film passing operation can be performed. This will make it easier to exchange characters and print.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a preferred embodiment of a printing apparatus for a three-side seal film packaging machine of the present invention.

FIG. 2 is a partial perspective view showing a preferred embodiment of the printing apparatus for a three-side seal film packaging machine of the present invention.

FIG. 3 is an overall explanatory view showing a three-side seal film packaging machine to which the printing device of the present invention is applied.

FIG. 4 is a detailed view showing a state where a printing tape is wound around a printing section of the printing apparatus of the present invention.

FIG. 5 is a perspective view showing a printing unit of the printing apparatus of the present invention.

FIG. 6 is a perspective view showing a print head of a printing unit in FIG. 5;

FIG. 7 is a perspective view showing a printing tape feeding means of the printing unit in FIG. 5;

FIG. 8 is a cross-sectional view showing a printing tape feeding means of the printing unit in FIG. 5;

FIG. 9 is a perspective view showing a printing tape winding means of the printing unit of FIG. 5;

FIG. 10 is a sectional view showing a printing tape winding means of the printing unit in FIG. 5;

FIG. 11 is a perspective view showing a printing tape feeding unit of the printing unit in FIG. 5;

FIG. 12 is a partial detailed view of the print tape feeding means of FIG. 11;

13 is an operation diagram of the printing tape feeding means of FIG. 11,
(A) is an explanatory view of the operation of the link mechanism, (b) is an explanatory view showing a feeding state of the printing tape, and (c) is an explanatory view showing a feeding amount of the printing tape.

FIG. 14 is an explanatory diagram showing a relationship between a printing unit and a stamp table of the printing apparatus of the present invention.

FIG. 15 is a perspective view showing a stamp base of the printing apparatus of the present invention.

FIG. 16 is an explanatory diagram showing a film supply unit of a three-side seal film packaging machine to which the printing device of the present invention is applied.

17A and 17B are diagrams showing a printing operation by the printing apparatus of the present invention, wherein FIG. 17A is an explanatory diagram before and after printing, and FIG. 17B is an explanatory diagram during printing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Printing device 2 ... Former 3 ... Center conveyor 4 ... Vertical sealer 5 ... Horizontal sealer 50 ... · Packaging film 52 ··· Printing tape 101 ··· Printing section 102 ··· Stamp base 103A and 103B ··· First two vertical beams 104A and 104B ... Second two vertical beams 105A, 105B... Two horizontal beams X...

Claims (1)

[Claims] 1. A three-side seal film package for forming a three-side seal wrapper having a predetermined wrapper length by wrapping an object to be wrapped in a wrapping film with a former, conveying the wrapper on a conveyor, and welding and cutting a vertical sealer and a horizontal sealer. A printing device used in a machine, wherein the printing device has a printing unit having a printing head for printing on the packaging film with a printing tape interposed therebetween, and the printing head includes the printing tape via the printing tape. A stamp base for supporting the packaging film when pressed against the film, wherein the printing portion is slidable on the first two vertical beams arranged in parallel in a direction orthogonal to the transport direction of the packaging film. The stamp base is slidable on a second two vertical beams arranged in parallel with the first two vertical beams facing the print head and the print tape. A three-sided seal film packaging machine, wherein the first and second two vertical beams are slidably mounted on two horizontal beams arranged in parallel to the transport direction of the packaging film. Printing device.