JP2741265B2 - Foam joining system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a foam bonding system suitable for use in collating lines, packaging lines, and the like.

[Prior Art] Conventionally, a joining device provided in a feed line by feeding a plurality of continuous forms having marginal punches continuous in the longitudinal direction in a collated line or the like in a superposed state along a feed line. A foam joining system for joining these continuous foams to each other is used.

At this time, in the foam joining system, a pin tractor is provided on the feed line, and the continuous rotation of the pin tractor which is locked by the marginal punch of each continuous form in a superimposed state rotates. The forms can be sent at the same timing.

Then, for example, in a collating line, the individual forms constituting each continuous form fed at the same timing by the above-described pin tractor are joined by the above-described joining apparatus while maintaining their superimposed state, and the unit form is formed. Is prepared.

[Problems to be Solved by the Invention] However, in the conventional foam joining system, the pin tractor is disposed only on the upstream side of the joining device in the feed line. For this reason, a plurality of continuous foams sent out from the pin tractor toward the joining device are joined by the joining device in a state where the feeding direction of each of the foams is no longer regulated. Accordingly, when some of the plurality of continuous forms in the superimposed state shift slightly to meander in a direction perpendicular to the line, the continuous forms are joined to each other with a lateral displacement inherent therein.

Therefore, the inventor of the present invention has proposed a method for preventing the above-mentioned lateral displacement.
It was considered to arrange pin tractors on each of the upstream side and the downstream side of the joining device. Then, the following experimental results were obtained. In the experiment, the interval between the bins opposed to each other across the joining device of the two pin tractors was set to an integral multiple of the reference pitch of the marginal punch provided in the continuous form.

A plurality of continuous foams in a superimposed state are joined by a joining device within a range where the feeding direction of each form is regulated by an upstream pin tractor and a downstream pin tractor, thereby preventing lateral displacement during joining. it can.

If there is no error in the pitch of the marginal punch provided in each continuous form, each continuous form is fed without slack between the upstream pin tractor and the downstream pin tractor.

However, if there is a marginal punch pitch error in a part of a certain form in the longitudinal direction, the form having a short pitch may cause the marginal punch to collapse between the upstream pin tractor and the downstream pin tractor. or,
Due to this error, a joining displacement in the longitudinal direction of the foam also occurs.

That is, in the case where the upstream pin tractor and the downstream pin tractor are disposed as described above, it has been recognized that although the lateral displacement prevention can be realized as described above, the joining displacement in the longitudinal direction as described above is caused. .

SUMMARY OF THE INVENTION An object of the present invention is to prevent a joining displacement between a plurality of continuous foams when feeding and joining the continuous foams.

[Means for Solving the Problems] The present invention relates to a foam joining system for feeding a plurality of continuous forms having a marginal punch continuous in a longitudinal direction and joining the continuous forms to each other by a joining apparatus. An upstream pin feeder and a downstream pin feeder are provided on each of the upstream side and the downstream side, each of which is provided with a pin engaged with a marginal punch of each continuous form in a superimposed state and feeds the continuous form. And
The pin interval between the two pin feeders with the joining device interposed therebetween is set to a non-integer multiple of the reference pitch of the marginal punch provided in the continuous form.

[Operation] The present invention has the following operation.

An upstream pin feeder and a downstream pin feeder were provided before and after the joining device. Therefore, the plurality of continuous foams in the superimposed state are joined by the joining device within a range in which the feeding direction of each of the foams is regulated by the upstream pin feeding device and the downstream pin feeding device. Lateral displacement can be prevented.

The opposing pin interval between the upstream pin feeder and the downstream pin feeder was set to a non-integer multiple of the reference pitch of the marginal punch provided in the continuous form. As a result, a plurality of continuous foams between the pin feeders have respective slacks.

Then, even if there is a pitch error of the marginal punch in a part of a certain form in the longitudinal direction, the pitch error is extremely small compared to the pin interval between the two pin feeders described above. And short forms do not lose the sag described above. For this reason, the marginal punches of all the forms are completely engaged with the pins and have no play, and the deviation of their pitch lengths may extend to the upstream side (upstream side) of the upstream pin feeder. In addition, it is absorbed between marginal punches, and when the continuous forms are joined by the joining apparatus, the joining misalignment in the longitudinal direction is not repeated.

According to the above, when a plurality of continuous forms are fed and joined, misalignment between the forms can be prevented.

[Embodiment] FIG. 1 is a schematic diagram showing an example of a collation line to which the present invention is applied, FIG. 2 is a schematic diagram showing a setting state of an upstream pin tractor and a downstream pin tractor, and FIG. It is a schematic diagram which shows the planar view of FIG.

As shown in FIG. 1, the collating line 10 includes a form feeding device 11 and a collating device 12.

The form feeding device 11 arranges the first to fourth form supply units 13A to 13D in series, and continuously draws out the first to fourth plural continuous forms 14A to 14D.

Specifically, the foam feeding device 11 includes the marginal punch 1 continuous in the longitudinal direction, and the continuous foams 14A to 14D having perforations at intervals in the longitudinal direction.
Can be extracted by the rotation of the upstream pin tractor 15 and the downstream pin tractor 16 which are locked by the marginal punch 1 and rotate. The details of the pin tractors 15 and 16 will be described later.

Then, the form feeding device 11 is provided with each continuous form 14A.
1414D are sequentially fed in a superimposed state on a feed line.

The collating apparatus 12 can perform collating work in which individual forms constituting the continuous forms 14A to 14D extracted from the form supply units 13A to 13D are overlapped with each other to form a unit form. The collating device 12 specifically includes a pair of pressure rollers 17.
The individual forms superimposed on each other are crimped. 18
Is a servomotor for driving the pressure roller 17, and 19 is a rotary encoder interlocked with the output shaft of the servomotor 18. In addition, each of the continuous forms 14A to 14D includes a pressure-sensitive adhesive to be pressed by the pressure roller 17.

Also, the form supply device 11 includes each of the form supply units 13A to 13A.
The 3D has a form guide device 21.

However, the collating apparatus 12 has the upstream pin tractor 15 and the downstream pin tractor 16 on the upstream and downstream sides of the pressure roller 17 in the feed line, respectively. Each pin tractor 15, 16 is provided with a pin 15A, 16A which engages with the marginal punch 1 of each of the continuous forms 14A, 14B, 14C, 14D, 14A, 14B, 14C, 14A, 14B, 14C, and 14D.
Send 4D.

Each of the pin tractors 15, 16 is an elliptical belt 15B, 1B.
A plurality of pins 15A, 16A are provided at a plurality of positions in the circumferential direction of 6B, so that a plurality of pins 15A, 16A can be simultaneously engaged with a plurality of adjacent marginal punches 1 in each of the continuous forms 14A to 14D.

Further, as shown in FIG. 2 and FIG. 3, the collating apparatus 10 sets a margin L between the pin tractors 15 and 16 across the pressure roller 17 so that the marginal punch 1 provided in each of the continuous forms 14A to 14D. Is set to a non-integer multiple of the reference pitch p.

FIG. 2 (A) differs from the present invention in that both pin tractors 15,
The 16 pin intervals L0 are integer multiples of the reference pitch p of the marginal punch 1 included in each of the continuous forms 14A to 14D. On the other hand, FIG. 2 (B) shows that the pin interval L is a non-integer multiple of the reference pitch p of the marginal punch 1 according to the present invention, and this pin interval L is the pin interval shown in FIG. 2 (A).
This is an example in which the shift amount δ is shorter than L0.

 Next, the operation of the above embodiment will be described.

An upstream pin tractor 15 and a downstream pin tractor 16 were provided before and after the pressure roller 17. Therefore, the plurality of continuous forms 14A to 14D in the superimposed state, the pressing direction of the pressure roller 17 within the range where the feeding direction of each form is regulated by the upstream pin tractor 15 and the downstream pin tractor 16.
And the lateral displacement at the time of joining can be prevented.

The opposing pin interval L between the upstream pin tractor 15 and the downstream pin tractor 16 is set to a non-integer multiple of the reference pitch p of the marginal punch 1 provided on the continuous forms 14A to 14D. As a result, the plurality of continuous forms 14A to 14D between the pin tractors 15 and 16 each have a slack as shown in FIG. 2 (B). If the pin interval L0 between the two pin tractors 15 and 16 is set to be an integral multiple of the reference pitch p of the marginal punch 1, the continuous form between the two pin tractors 15 and 16 has the pitch between them. As long as there is no error in the length, there is no slack as shown in FIG.

Then, even if there is a pitch error of the marginal punch 1 in a part of a certain form in the longitudinal direction during the operation of the collating apparatus 12 of the above embodiment, the pitch error is opposite to that of the pin tractors 15 and 16 described above. Since the pitch is extremely small as compared with the pin interval L, neither a foam having a longer pitch nor a foam having a shorter pitch loses the above-described slack state. Therefore, the marginal punches 1 of all the continuous forms 14A to 14D are completely engaged with the pins 15A and 16A and have no play. (The upstream side), and when the continuous forms 14A to 14D are joined by the pressure roller 17, the joining misalignment in the longitudinal direction is not repeated.

According to the above, when a plurality of continuous forms 14A to 14D are fed in a state of being overlapped and bonded, misalignment between the forms 14A to 14D can be prevented.

The present invention can be applied to a packaging system and the like.

[Effects of the Invention] As described above, according to the present invention, when a plurality of continuous forms are fed and joined, misalignment between the forms can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of a collation line to which the present invention is applied, FIG. 2 is a schematic diagram showing a setting state of an upstream pin tractor and a downstream pin tractor, and FIG. 3 is a plan view of FIG. It is a schematic diagram which shows a vision. 1… Marginal punch, 14A ～ 14D …… Continuous form,
15 ... Pin tractor on the upstream side, 16 ... Pin tractor on the downstream side, 17 ... Crimping roller.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Nobuomi Konishi 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (56) References JP-A-54-74124 (JP, A)

Claims (1)

(57) [Claims] 1. A foam joining system for feeding a plurality of continuous foams having a marginal punch continuous in a longitudinal direction and joining the continuous foams to each other by a joining device. An upstream pin feeder and a downstream pin feeder are provided, which are provided with pins engaged with a marginal punch of each continuous form in a superposed state, and feed the continuous forms,
A foam joining system, wherein a pin interval between two pin feeders with a joining device interposed therebetween is set to a non-integer multiple of a reference pitch of a marginal punch provided in a continuous form.