CN108502596B

CN108502596B - Web processing apparatus

Info

Publication number: CN108502596B
Application number: CN201810164143.4A
Authority: CN
Inventors: 艗将孝
Original assignee: Murata Manufacturing Co Ltd
Current assignee: Murata Manufacturing Co Ltd
Priority date: 2017-02-28
Filing date: 2018-02-27
Publication date: 2020-06-16
Anticipated expiration: 2038-02-27
Also published as: JP6645457B2; JP2018140857A; KR102022956B1; KR20180099471A; CN108502596A

Abstract

The invention provides a web processing device, which can reduce the tension of a web during processing and improve the processing precision. The web processing device comprises a web fixing unit (22) which is arranged at the upstream side or the downstream side of a processing workbench (20) and switches the web into a fixed state and a release state; and a web material transfer unit (7) which is arranged on the opposite side of the upstream side or the downstream side of the processing platform from the web material fixing unit and intermittently transfers the web material; and a web tension control unit that operates the web transport unit or the web fixing unit in a direction in which the tension of the web positioned between the web transport unit and the web fixing unit is reduced, in a state in which the web is fixed by the web fixing unit, when the web is processed in the processing platform. Furthermore, a supporting unit (23) for supporting the lower surface of the web is arranged between the processing platform and the web conveying unit. The coefficient of friction of the support unit is preferably lower than the coefficient of friction of the machining table.

Description

Web processing apparatus

Technical Field

The present invention relates to a web processing apparatus, and more particularly to a processing apparatus including a processing table for processing an elongated web in a stopped state. In this specification, the web generally refers to a long strip-like thin member such as a sheet or a film, and is not limited to the material.

Background

When precision processing such as printing, laminating, and pressing is performed on a thin-film ceramic green sheet formed on a long carrier film, the carrier film needs to be temporarily stopped. Therefore, in the manufacturing process of the ceramic green sheet, a manufacturing apparatus in which a processing stage that is intermittently conveyed is provided between continuous conveying stages is used.

Patent document 1 discloses an apparatus for transferring a high-definition pattern. In this apparatus, when a film-like transfer substrate having a high-definition pattern formed on its surface is temporarily fixed in close contact with a transfer substrate, the tension of the transfer substrate is adjusted to be the same or substantially the same as the tension of the transfer substrate at the time of pattern formation, and then the high-definition pattern is transferred from the transfer substrate to the transfer substrate by heating and pressing.

In patent document 1, as shown in fig. 9, 2 sets of nip rollers 102 that contact the transfer substrate 100 from above and below and fix the transfer substrate 100 are disposed on both sides of a processing table 101 on which the transfer substrate 100 is temporarily fixed, a tension detection roller 103, a tension adjustment roller 104, and a guide roller 105 are disposed between the 2 sets of nip rollers 102, and the tension adjustment roller 104 is connected to a ball screw mechanism 107 driven by a single-axis precision drive motor 106. In this configuration, by moving down the dancer roll 104 in units of micrometers, the tension can be controlled in units of 20 g/m.

Documents of the prior art

Patent document

Patent document 1

Japanese patent laid-open No. 2000-246868

However, since the transfer substrate 100 between the processing stage 101 and the tension detection roller 103 is not supported, tension is applied to the transfer substrate due to the own weight of the transfer substrate 100. Further, when the dancer roll 104 is moved downward, a downward tension is applied to the transfer substrate 100 by the dancer roll 104. Therefore, the tension of the transfer substrate 100 on the processing stage 101 cannot be sufficiently eliminated, and there is a problem that variation occurs in the processing accuracy.

Disclosure of Invention

Technical problem to be solved by the invention

The invention aims to provide a web processing device which can fully eliminate the tension of a web on a processing workbench.

Technical scheme for solving problems

To achieve the object, a web processing apparatus of the present invention includes: a web transport unit that transports the strip web through the processing platform; a processing table provided on the processing table, having a supporting surface for supporting a lower surface of the web, and configured to perform a predetermined process on the web in a stopped state; a web fixing unit disposed on at least one of an upstream side and a downstream side of the processing platform, for temporarily fixing the web; a web tension control unit that operates the web transport unit or the web fixing unit in a direction in which a tension of the web on the processing platform is reduced, in a state in which the web is temporarily fixed by the web fixing unit, before the web is processed on the processing platform; and a support unit disposed between the processing table and the web transport unit, and supporting a lower surface of the web.

In order to reduce the tension of the web as much as possible during processing, a web fixing means capable of temporarily fixing the web is provided on the side opposite to the web transfer means on the upstream side or the downstream side of the processing platform, and the web transfer means or the web fixing means is operated in a direction in which the tension of the web positioned between the web transfer means and the web fixing means is reduced in a state in which the web is fixed by the web fixing means before the web is processed in the processing platform. Thus, the web arranged on the processing platform has almost no tension, and the problem of skew caused by extension of the web when the web is processed can be solved. Further, the amount of movement when the web conveying unit or the web fixing unit is moved in the direction in which the web tension is reduced may be small because the tension acting on the web is released. In addition, since the present invention is provided with the supporting unit for supporting the lower surface of the web between the processing table and the web conveying unit, the tension of the web on the processing table due to the weight of the web itself can be sufficiently eliminated.

In the present invention, the web transport means is a means for intermittently feeding out a web, in other words, a mechanism capable of switching a web between a stopped state and a transport state, and is provided between the supply deck and the processing deck or between the processing deck and the discharge deck. Examples of the web transport unit include a suction roll (suction roll), a nip roll (nip), a movable table that moves the web back and forth in the upstream and downstream directions by gripping or sucking the web, and a chuck mechanism that moves the web back and forth in the upstream and downstream directions. In particular, since the suction roller rotates while keeping sucking the back surface of the web, even when a ceramic green sheet or the like is formed on the surface of the web, the suction roller can convey the web without damaging the ceramic green sheet. Further, the suction roller has a simple structure and excellent control performance for stopping and starting, compared with the movable table and the chuck mechanism.

On the other hand, the feeding stage disposed on the upstream side of the processing stage may be, for example, a continuous conveying stage including an unwinding roller; the discharge stage disposed on the downstream side of the processing stage may be, for example, a continuous conveyance stage including a wind-up roll. The conveyance speed when the web conveyance unit is driven is preferably 10 times or more higher than the conveyance speeds of the supply deck and the discharge deck provided on both the upper and lower sides of the web conveyance unit. In order to absorb the difference between the conveyance speed of the web conveyance unit and the conveyance speed of the supply deck/discharge deck, a known buffer mechanism such as a compensation roller may be provided. Further, a dancer roll may be provided to absorb tension fluctuations of the web. The processing platform is a platform for performing various operations such as a processing step such as printing, laminating, and pressing, and an inspection step on a web in a stopped state.

The coefficient of friction of the bearing surface of the bearing unit is preferably smaller than the coefficient of friction of the bearing surface of the machining table. In this case, since the web is easily slid on the support member, an excessive tension due to the web being caught on the support member or the like does not act, and the tension can be made closer to 0.

The support surface of the support unit may have a convex configuration parallel to the web transport direction. In this case, since the contact surface between the support surface of the support unit and the web is small, the friction coefficient between the two can be made low, and the web is likely to slide.

The support unit may also be a configuration formed by a rod-like member extending parallel to the web conveying direction. In this case, air can be blown through the gap of the rod-shaped member. Since the pressure influence by the blast is small, a stable low tension state can be established by the blast.

The supporting means may be a supporting table, and may be provided with blowing means for blowing the web on the supporting table in a direction in which frictional resistance between the web and the supporting table is reduced, at least while the web tension is reduced by the web tension control means. Thus, when the air blowing means is provided on the support table to reduce friction, if the air is not blown to the machining table but the air is blown to the support table, the friction coefficient of the support table can be reliably made smaller than the friction coefficient of the machining table. This configuration is effective for constructing a web with extremely low rigidity, a low tension state of a web with an extremely high friction coefficient.

Effects of the invention

As described above, according to the present invention, the web fixing means capable of temporarily fixing the web is disposed on the opposite side of the web transport means from the upstream side or the downstream side of the processing table, and immediately before the web is processed in the processing table, the web transport means or the web fixing means is operated in a state where the web is temporarily fixed by the web fixing means, so that the tension of the web between the web transport means and the web fixing means is reduced, and therefore almost no tension acts on the web at the processing stage, and the problem of processing skew due to the extension of the web can be solved. Further, since the support unit for supporting the lower surface of the web is provided between the processing table and the web transport unit, the tension of the web on the processing table due to the weight of the web itself can be sufficiently eliminated. As a result, even a web having a large influence of stretching due to tension can be processed with high precision.

Drawings

Fig. 1 is a schematic configuration diagram showing an example of a processing apparatus according to the present invention.

Fig. 2(a) to 2(c) are perspective views of a plurality of examples of a support table as an example of a support unit.

Fig. 3(a) to 3(e) are process diagrams illustrating an example of the operation principle of the present invention.

Fig. 4(a) and 4(b) are diagrams showing changes in tension in the respective conventional steps, and fig. 4(b) is a diagram showing changes in tension in the respective steps of the present invention.

Fig. 5(a) and 5(b) are process diagrams showing a main part of the operation principle of embodiment 2 of the present invention.

Fig. 6(a) and 6(b) are process diagrams showing a main part of the operation principle of embodiment 3 of the present invention.

Fig. 7(a) and 7(b) are process diagrams showing a main part of the operation principle of embodiment 4 of the present invention.

Fig. 8(a) and 8(b) are schematic views showing a machining apparatus according to embodiment 5 of the present invention.

Fig. 9 is a schematic diagram showing a conventional pattern transfer apparatus.

Detailed Description

Fig. 1 shows an example of a web processing apparatus according to the present invention. The web U used in this embodiment is, for example, a web in which a thin film-like ceramic green sheet is formed on a strip-like carrier film. This conveyer includes: a supply stage S1 located on the upstream side of the conveyor; a processing station S2 located at the middle portion, and a discharge station S3 located at the downstream side. The supply deck S1 is provided with a payout roller 1 that is continuously rotated at a constant conveyance speed by a motor to supply a web before processing. The processing platform S2 is provided with a processing machine 2 that performs predetermined operations such as printing, laminating, pressing, and inspection while stopping the web. The discharge deck S3 is provided with a wind-up roll 3 that is continuously rotated at a constant conveyance speed by a motor and winds up the processed web.

The processing machine 2 includes a processing table 20 capable of sucking and blowing the web, and a processing head 21 capable of moving up and down for performing predetermined processing is provided above the processing machine. The processing by the processing table 20 and the processing head 21 may be any processing as long as the processing is performed on the web U in a stopped state, and includes punching, printing, laser drilling, and the like. Inside the processing machine 2, a suction table 22 is provided which is located on the upstream side of the processing table 20 and can temporarily fix the web U. The suction table 22 may be provided outside the processing machine 2, but no other roller is provided between the processing table 20 and the suction table 22. The suction table 22 may be formed to be smaller than the processing table 20 as long as it can hold a part of the suction web U. The suction table 22 includes a mechanism for gripping and fixing the web in addition to suction. It is also possible to blow air during intermittent transfer of the web, during tension control or during resetting.

Further, a support table 23 for supporting the lower surface of the web U is provided inside the processing machine 2 on the downstream side of the processing table 20. The support table 23 may be provided outside the processing machine 2. The support table 23 has a function of supporting the web so as not to sag, and is preferably provided below the web (slightly below the height of the pass line) in a region where the web of which the tension is controlled is present during processing. A support table 23 is provided in many cases between the processing table 20 and the roller 7 that drives the web, and the length of the support table 23 in the web conveyance direction is such that the web does not sag below the web support table 23. The width of the support table 23 may also be smaller than the width of the web. The coefficient of friction of the bearing surface (upper surface) of the support table 23 is preferably smaller than the coefficient of friction of the bearing surface (upper surface) of the machining table 20.

In order to reduce friction, it is designed so that there is no contact or a small contact area between the web U and the support table 23. For example, there are various structures shown in fig. 2(a) to 2 (c).

(1) As shown in fig. 2 a, the support table 23 is provided with a plurality of air blowing holes 23a, and air is blown from these air blowing holes 23a at least in the return operation (the below-described lowering of the tension). Air is supplied to the air blowing holes 23a by an air blowing device not shown.

(2) As shown in fig. 2(b), the support surface of the support table 23 on the web contact side is formed into a convex shape 23b parallel to the sheet conveying direction. In this case, the width of the convex portions 23b is preferably about 10mm, and the number of the convex portions 23b may be 2 or more within the width of the web. Preferably, the contact area per unit length of the processing table is 0.1 to 60%. Further, air may be blown from the grooves 23c between the convex portions 23 b.

(3) As shown in fig. 2(c), the support table 23 is formed in a linear, tubular or rod shape. In fig. 2(c), a plurality of rod-like members 23d having circular cross sections are fixed to a support plate 23e in parallel with the sheet conveying direction. The diameter of the rod-like members 23c is preferably, for example, 0.1 to 10mm, and the number of the rod-like members 23d may be 2 or more in the sheet width range. When the rod-like member 23d is formed of a duct having a plurality of air blowing holes, air is blown out from the air blowing holes by feeding air into the duct, whereby friction with the web can be further reduced.

The web U fed by the unwinding roll 1 is conveyed to the processing machine 2 via a guide roll 4, a dancer roll 5, and a compensator roll 6 in this order. The web U having passed through the processing machine 2 is wound up by the wind-up roll 3 via the suction roll 7, the compensation roll 8, the dancer roll 9, and the guide roll 10. In fig. 1, the upstream-side compensation roller 6 and the downstream-side tension adjustment roller 5 are movable in the horizontal direction, and the downstream-side compensation roller 8 and the downstream-side tension adjustment roller 9 are movable in the vertical direction.

The dancer rollers 5 and 9 are devices that apply a constant tension to the web U by determining the pressing force by the

air cylinders

5a and 9a in order to absorb tension fluctuations when the web tension fluctuates.

The suction roll 7 constitutes a web transfer unit that intermittently transfers the web. The suction roll 7 has a function of holding and sucking the web U on the outer peripheral surface thereof, and is intermittently driven to rotate by a servo motor. The suction roller 7 in this embodiment is disposed on the downstream side of the processing stage S2, i.e., on the opposite side of the suction table 22 from the processing stage S2.

The compensation rolls 6 and 8 are buffer devices that absorb slack and tension of the web U that occur with the intermittent rotation of the suction roll 7. Since the conveyance speed of the suction roller 7 when driven is, for example, 200mm/S to 2000mm/S, which is much higher (preferably 10 times or more higher) than the conveyance speeds of the supply deck S1 and the discharge deck S3, the

compensation rollers

6 and 8 absorb the difference between the conveyance speed of the suction roller 7 and the conveyance speeds of the supply deck/the discharge deck. The compensation roller 6 includes a motor 6a and a ball screw 6b, and the compensation roller 6 can be moved in the horizontal direction by driving the motor 6 a. On the other hand, the compensation roller 8 also includes a motor 8a and a ball screw 8b, and the compensation roller 8 can be moved in the vertical direction by driving the motor 8 a.

The web processing apparatus shown in fig. 1 is provided with a control circuit 11 that collectively controls the respective driving devices for conveying the web. That is, the control circuit 11 controls the unwinding roller 1, the compensating roller 6, the suction roller 7, the compensating roller 8, and the winding roller 3, respectively. The control circuit 11 can control switching of suction and blowing of the machining table 20 of the machining center 2, lifting and lowering of the machining head 21, switching of suction and blowing of the suction table 22, and the like. The control circuit 11 constitutes a web tension control unit of the invention.

Next, the operation of the transport apparatus according to the present invention will be described with reference to fig. 3(a) to 3 (e). Fig. 3(a) shows a state in which the suction roll 7 rotates in a rapid forward direction and intermittently conveys the web U (for example, conveys 150mm for a period of 150 ms). At this stage, the machining head 21 is retracted upward, and the air blowing from the machining table 20, the suction table 22, and the support table 23 is stopped, or the air blowing is performed and the web U is released from the machining table 20, the suction table 22, and the support table 23. When the blowing is stopped and the conveyance is performed, the respective tables 20, 22, and 23 are preferably located below the pass line height. Therefore, even if the suction roll 7 is rotated rapidly, damage due to friction between the web U and the processing table 20, the suction table 22, and the support table 23 does not occur. In addition, since the web U is stretched to the right by the rapid forward rotation of the suction roll 7, the compensation roll 6 also moves to the right at a high speed. The tension of the web U during the conveying is preferably 5-50N.

Fig. 3(b) shows a state after the suction roller 7 is stopped. At this time, the air blowing of the processing table 20, the suction table 22, and the support table 23 is stopped, and the web U is released from the processing table 20 and the suction table 22. The web U is subjected to tension by the dancer rolls 5, 9.

Fig. 3(c) shows a stage of lowering the tension. First the suction table 22 starts suction and fixes the web. Subsequently, the suction roller 7 is rotated reversely by a minute distance. This action is to release the tension acting on the web U, and the return amount thereof may be a minute length of about 2% or less of the distance between the processing table 20 and the suction roll 7. The tension of the web is preferably about 0-5N. In the reverse rotation, air can be blown from the support table 23, so that the frictional resistance between the support table 23 and the web U is eliminated, and the tension of the web on the processing table 20 is reduced more effectively. In the reverse rotation, air may be blown from the processing table 20 to eliminate frictional resistance between the processing table 20 and the web U. Further, instead of blowing air from the support table 23, the support table 23 may be configured as shown in fig. 2(b) or (c), so that frictional resistance between the support table 23 and the web U is reduced, and the tension of the web on the processing table 20 may be reduced. After the suction roll 7 is rotated in the reverse direction by a small distance, suction of the processing table 20 is started, and the web is held on the processing table 20. At this stage, the Y direction/θ direction of the machining table 20 may be positioned. This causes almost no tension to act on the web attracted by the processing table 20.

Fig. 3(d) shows a processing stage in which the processing table 20 and the suction table 22 are sucked and the processing head 21 is lowered to perform desired processing on the web. Thus, since the web on which almost no tension acts is processed, the occurrence of stretching can be suppressed, and high-precision processing becomes possible. The reason why the suction table 22 continues the suction during the processing is to prevent the web being processed from being affected by tension fluctuations caused by the compensating roller 6 moving at a low speed toward the upstream side in association with the continuous conveyance at the supply table S1.

Fig. 3(e) shows a suction release stage in which the processing head 21 is raised, and then air is blown from the processing table 20 and the suction table 22 and air is blown from the support table 23 to release the web. After that, the suction roller 7 is rotated in the forward direction by a minute length (for example, 0 to 0.2 mm). The minute forward rotation of the suction roller 7 is an arbitrary operation. This operation is performed to apply tension to the web on the processing table 20 in advance, and to suppress vibration of the web caused by rapid forward rotation of the suction roll 7 (see fig. 3(a)) thereafter. After that, the process returns to the step 1 (fig. 3 a), and thereafter, the same process is repeated.

Fig. 4(a) and 4(b) show changes in web tension in a conventional transfer device and a transfer device of the present invention. As shown in fig. 4(a), in the conventional transport apparatus, a tension T1 generated by the dancer roll is also applied during processing, and the processing is completed and the intermittent transport is started at time T7. In intermittent transfer, the web is temporarily subjected to a large tension T2, which is below the elastic limit of the web. At time T8 after the intermittent conveyance ends, the tension of the web is simply changed back to tension T1, and cannot be changed to 0. The web was processed with tension T1 applied.

In the present invention, as shown in fig. 4(b), the suction is released at time T1, and a tension T1 acts on the web. At time T2, a tension T2 acts on the web due to the start of the intermittent transfer. At time T3, the intermittent transport ends and the tension changes back to tension T1. Next, after the tension lowering operation is performed at time t4, the tension is lowered to about 0, and the processing is performed from time t5 to time t 6. By lowering the tension, the tension of the web on the processing table is about 0. By processing the web in this state, high-precision processing is possible. After which the same operation is repeated.

In addition, in fig. 4(b), in order to clarify the difference between the present invention and the prior art, the periods of suction release, stop and tension lowering are shown to be relatively long, and actually, the periods of suction release, stop and tension lowering are extremely short compared with the processing time, so that there is no need to worry about the influence of the respective operations of suction release, stop and tension lowering on the processing time.

Fig. 5(a) and 5(b) show a transfer process according to embodiment 2 of the present invention. Fig. 5(a) and 5(b) correspond to fig. 3(a) and 3 (c). In fig. 5(a) and 5(b), the web transport stage is the same as in fig. 3(a) to 3(e), but the suction roll 7 itself retreats (moves toward the upstream side) by a slight distance in the low tension stage. In the suction release stage after the processing, the suction roller 7 itself needs to be moved forward (moved downstream) by a small distance and returned to the original position. In this case, a mechanism for moving the suction roller 7 forward and backward is provided. In this embodiment, the suction roll 7 is retracted by a small distance while being kept stopped without reversely rotating the suction roll 7, so that the tension of the web on the processing table 20 can be released. In this case, when the tension is reduced, the frictional resistance between the support table 23 and the web U can be reduced and the tension of the web on the processing table 20 can be reduced by blowing air from the support table 23 or by using a structure as shown in fig. 2(b) or (c) as the support table 23.

Fig. 6(a) and 6(b) show a transfer process according to embodiment 3 of the present invention. Fig. 6(a) and 6(b) correspond to fig. 3(a) and 3 (c). In this embodiment, a mechanism for moving the suction table 22 back and forth (back and forth between the upstream and downstream sides) with respect to the processing table 20 is provided. The suction table 22 is placed away from the processing table 20 while the web is being conveyed. At this time, air may be blown from the suction table 22. In the low tension stage, the suction roll 7 is first stopped, and the web is minutely advanced while being sucked by the suction table 22. When the tension is lowered, air may be blown from the processing table 20 and the support table 23. After that, the machining table 20 performs suction. Thereby, the tension of the web on the processing table 20 can be released. In this case, since the support table 23 having a small frictional resistance is also disposed between the suction table 22 and the processing table 20, the web tension on the processing table 20 can be made approximately 0.

Fig. 7(a) and 7(b) show a transfer process according to embodiment 4 of the present invention. Fig. 7(a) and 7(b) correspond to fig. 3(a) and 3 (c). In this embodiment, the

suction rollers

7 and 12 are provided on both the upstream side and the downstream side of the processing table, the suction table 22 is provided on the downstream side of the processing table 20, and the support table 23 is provided on the upstream side of the processing table 20. When the web is conveyed, the suction rolls 7 and 12 on both sides are rotated in the forward direction in synchronization, and the intermittent conveyance is performed. When the web is conveyed, air is blown from the processing table 20, the suction table 22, and the support table 23. In the low-tension stage, the downstream suction roll 7 is stopped, and the upstream suction roll 12 is rotated in a minute forward direction while the suction table 22 is performing suction. Thereby, the tension of the web on the processing table 20 can be released. Further, during the period of lowering the tension, air may be blown from the processing table 20 and the support table 23. Since the support table 23 supports the tension generated by the own weight of the web between the suction roll 12 on the upstream side and the processing table 20, the tension of the web on the processing table 20 can be reduced. After that, the machining table 20 may be sucked to perform machining. In addition, in this embodiment, since the suction roll 7 on the downstream side can function as the suction table 22 (web fixing unit), the suction table 22 can also be omitted.

Fig. 8(a) and 8(b) show a machining apparatus according to embodiment 5 of the present invention. In fig. 8(a) and 8(b),

tension adjusting rollers

30 and 31 are provided on the upstream and downstream sides of the processing table 20, and a nip mechanism 32 for nipping and fixing a web is provided on the downstream side of the processing table 20. Further, support tables 33 and 34 having small frictional resistance are disposed upstream and downstream of the machining table 20, particularly directly in front of and directly behind the machining table 20. A pair of

guide rollers

35a, 35b, 36a, 36b are provided in front of and behind the

dancer rollers

30, 31. The dancer roll 30 on the upstream side is provided with a nip roll 37 for nipping the web.

The processing operation of this transfer device is as follows. That is, the nip mechanism 32 is released at the time of intermittent conveyance, and the web is conveyed at high speed from the upstream side to the downstream side by a conveyance unit not shown. When the conveyance is stopped, the nip mechanism 32 nips the web, and then the upstream-side dancer roller 30 and the nip roller 37 nip the web, and the dancer roller 30 keeps nipping the web and rises. Next, the processing table 20 sucks the web, and the processing head 21 lowers and processes the web. After the processing, the suction of the processing table 20 is released, the dancer roller 30 is lowered, the fixing by the dancer roller 30 and the nip roller 37 is released, the web is released by the nip mechanism 32, and the tension is restored. Thereafter, the same operation is repeated.

In the above embodiment, the suction roller is used as the web transport unit, but in addition to this, a nip roller driven by pinching the web, a movable table reciprocating back and forth in a state of nipping or sucking the web, a chuck device reciprocating back and forth in a state of catching the web, or the like may be used. Further, elements of one embodiment are applied to other embodiments, and thus other embodiments can be configured.

The present invention is not limited to the above-described embodiments. The web to be the object of the present invention is not limited to the web on which the ceramic green sheet is formed on the carrier film, and may be a web as a material for electronic components and substrates, and the like, and any long strip-shaped material or film may be applied. The present invention is not limited to the processing platform provided between the unwinding roll and the winding roll as shown in fig. 1, and the processing platform may be provided in the middle of a plurality of manufacturing stages. That is, the supply deck and/or the discharge deck may be a deck that intermittently conveys the web like the processing deck without continuously conveying the web.

Description of the reference symbols

U-web

S1 supply platform

S2 processing platform

S3 discharge platform

1 unwinding roller

2 processing machine

20 working table

21 machining head

22 suction table (Web fixed unit)

23 supporting table (supporting unit)

3 wind-up roll

5. 9 tension adjusting roller

6. 8 compensating roller

7 suction roll (Web transfer unit)

11 control circuit (tension control unit)

12 suction roll

13. 14 nip rolls (web transfer unit).

Claims

1. A web processing apparatus, comprising:

a web transport unit that intermittently transports the strip web through the processing platform;

a processing table provided on the processing table, having a supporting surface for supporting a lower surface of the web, and configured to perform a predetermined process on the web in a stopped state;

a web fixing unit disposed on at least one of an upstream side and a downstream side of the processing platform, for temporarily fixing the web;

a web tension control unit that operates the web transport unit or the web fixing unit in a direction in which a tension of the web on the processing table is lower than a time point when the intermittent transport ends, in a state in which the web is temporarily fixed by the web fixing unit before the web is processed in the processing table; and

a support unit disposed between the processing table and the web transport unit, the support unit supporting a lower surface of the web,

the coefficient of friction of the support surface of the support unit is less than the coefficient of friction of the support surface of the machining table,

the processing table is located between the web material transfer unit and the web material fixing unit, and the web material transfer unit is arranged on the opposite side of the web material fixing unit relative to the processing table.

2. The web processing apparatus of claim 1,

the support surface of the support unit has a convex shape parallel to the web transport direction.

3. The web processing apparatus of claim 1,

the support unit is formed by a rod-like member extending parallel to the web transport direction.

4. A web processing apparatus, comprising:

the supporting unit is a supporting table, and an air blowing unit is provided for blowing air to the web on the supporting table so as to reduce frictional resistance between the web on the supporting table and the supporting table at least while the tension of the web is reduced by the web tension control unit,