TWI877831B - Film feeding device and film feeding method - Google Patents

Abstract

A film feeding device includes a film supply mechanism, a power source and a control unit. The film supply mechanism includes a supply roller, a guide roller and a take-up roller. The supply rolls are used to supply a film including a release layer and a base layer. The guide roll is disposed corresponding to the supply roll and used to separate the release layer from the base layer. The take-up roller is disposed corresponding to the supply roller and used to take up the release layer separated from the base layer. The power source is connected to the guide roll. The control unit is communicated with the power source. The control unit operates the power source according to a requirement of no permanent parting line between the release layer and the base layer.

Description

Film material feeding device and film material feeding method

The present invention relates to a film material feeding device and a film material feeding method.

As electronic devices become smaller and more high-performance, the electronic circuit boards used in electronic devices widely use multilayered circuit boards, so-called multilayer PCBs. Multilayer PCBs are formed by stacking multiple layers alternately, with some layers printed with circuits with concave and convex shapes on the surface, and some other layers being insulating resin films. For example, in order to manufacture a multilayer board with a multi-layer structure, the following steps must be repeated: forming a circuit pattern on a substrate, stacking a resin film on the substrate, and hardening the resin film.

The accumulation of multiple layers can be accomplished by a laminator or a film laminator. Generally speaking, a laminator or a film laminator may include a workpiece that picks up the film material and attaches the film material to the surface of the substrate. When the laminator or the film laminator is not in operation, the workpiece will keep the film material in a predetermined standby position.

Film materials usually have a multi-layer structure including a release film and a substrate. When in use, the release film is separated from the substrate, and the substrate is attached to the surface of the substrate. When the laminating machine or laminating machine is not in operation, the release film stops separating from the substrate. In this case, the material properties of some film materials may cause a permanent separation line visible to the naked eye to form at the position where the release film is separated from the substrate, and the permanent separation line cannot be eliminated. The permanent separation line will affect the yield of the substrate being attached to the substrate surface, so avoiding the formation of permanent separation lines is one of the issues that need to be solved in this field.

In view of the above problems, the present invention provides a film material feeding device, which helps to solve the problem of forming a permanent film separation line at the position where the release film is separated from the substrate. The present invention also provides a film material feeding method.

The film material feeding device disclosed in the present invention includes a film material supply mechanism, a power source and a control unit. The film material supply mechanism includes a supply roller, a first guide roller and a take-up roller. The supply roller is used to supply the film material including a release film and a substrate. The first guide roller is provided corresponding to the supply roller and is used to separate the release film from the substrate. The take-up roller is provided corresponding to the supply roller and is used to take up the release film separated from the substrate. The power source is connected to the first guide roller. The control unit is communicatively connected to the power source. The control unit operates the power source according to the requirement that no permanent film separation line is formed between the release film and the substrate.

The film material feeding method disclosed in the present invention comprises: supplying a film material comprising a release film and a substrate by a film material supply mechanism, wherein the release film is partially separated from the substrate; fixing the substrate by a film fixing member; and executing a film releasing procedure, rotating a first guide roller of the film material supply mechanism by a power source, so that the release film is further separated from the substrate.

According to the film material feeding device and the film material feeding method disclosed in the present invention, the film material feeding device includes a power source that allows the guide roller to actively rotate to feed the substrate and a control unit that can control the operation of the power source according to the need to not form a permanent film separation line. According to the film material feeding method disclosed in the present invention, the control unit controls the power source to continuously feed the substrate, or to feed the substrate at a fixed time interval that is less than the critical time that will generate a permanent film separation line. In this way, in the standby state where no film lamination operation or film pressing operation is performed, the release film and the substrate can still be separated by the guide roller and the power source, thereby preventing the formation of a permanent film separation line.

The above description of the content of the present invention and the following description of the implementation methods are used to demonstrate and explain the principles of the present invention and provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable anyone familiar with the relevant technology to understand the technical content of the present invention and implement it accordingly. Moreover, according to the contents disclosed in this specification, the scope of the patent application and the drawings, anyone familiar with the relevant technology can easily understand the present invention. The following embodiments further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention by any viewpoint.

Please refer to FIG. 1, which is a schematic diagram of a lamination machine according to an embodiment of the present invention. In this embodiment, the lamination machine 1 includes a film material feeding device 10, a supporting table 20, and a lamination device 30. The lamination machine 1 can be a laminating machine or a laminating machine, and the laminating machine is used to attach the film material to the surface of the substrate. In addition to attaching the film material, the laminating machine also squeezes the film material so that it is pressed flat on the substrate. The supporting table 20 is set corresponding to the film material feeding device 10, and the supporting table 20 is used to support the substrate (not shown). In the embodiment where the lamination machine 1 is a laminating machine, the lamination device 30 may include a vacuum chamber. In the case where the laminating machine 1 is a laminating machine, the laminating device 30 may include a pressure roller or a flat plate-shaped flattening member. FIG. 1 exemplarily shows that the laminating device 30 includes a pressure roller.

Fig. 2 is a three-dimensional schematic diagram of the film material feeding device of the laminating machine of Fig. 1, and Fig. 3 is a side view schematic diagram of the film material feeding device of Fig. 2. The film material feeding device 10 includes a film material supply mechanism 110, a power source 120 and a control unit 130.

The film material supply mechanism 110 includes a supply roller 111, a first guide roller 112, and a take-up roller 113. The supply roller 111 may be a roller for setting a film material roll including a release film 101 and a substrate 102. The first guide roller 112 is provided corresponding to the supply roller 111. The first guide roller 112 is used to separate the release film 101 of the film material from the substrate 102. The take-up roller 113 is provided corresponding to the supply roller 111. The take-up roller 113 is used to take up the release film 101 that has been separated from the substrate 102, so the take-up roller 113 can also be understood as a waste film recovery roller.

The power source 120 is, for example but not limited to, a hydraulic cylinder or a stepping motor, which is connected to the first guide roller 112. The power source 120 can drive the first guide roller 112 to rotate to actively separate the substrate 102 and the release film 101 and feed the substrate 102.

The control unit 130 is, for example but not limited to, a microprocessor or an external computer device installed in the power source 120, which is communicatively connected to the power source 120. The control unit 130 can operate the power source 120 according to the requirement that no permanent separation line is formed between the release film 101 and the substrate 102. In other words, the control unit 130 can control the power source 120 to operate intermittently or continuously. The specific method of controlling the operation of the power source 120 by the control unit 130 will be further described in the subsequent film material feeding method.

In this embodiment, the film material supply mechanism 110 further includes a film fixing member 114. The film fixing member 114 is used to fix the substrate 102 provided from the first guide roller 112. Further, the film fixing member 114 is, for example but not limited to, a clamping claw or a suction cup plate with a negative pressure hole. The film fixing member 114 can pick up the substrate 102, and can move relative to the support table 20 of the lamination machine 1 of FIG. 1 to drive the substrate 102 close to the substrate disposed on the support table 20, so as to attach the substrate 102 to the substrate surface.

In this embodiment, the film material supply mechanism 110 further includes another second guide roller 115. The first guide roller 112 is between the supply roller 111 and the second guide roller 115, and the second guide roller 115 is used to adjust the feeding direction of the substrate 102 provided from the first guide roller 112. In this embodiment, the first guide roller 112 can be engaged with the second guide roller 115 through a gear, so that when the power source 120 drives the first guide roller 112 to rotate, the second guide roller 115 can also be driven to rotate, but the present invention is not limited thereto. In some embodiments, the second guide roller 115 can be connected to another power source different from the power source 120, so that the first guide roller 112 and the second guide roller 115 can rotate independently of each other.

In this embodiment, the film material feeding mechanism 110 further includes a tension adjusting member 116. The tension adjusting member 116 is disposed between the film fixing member 114 and the first guide roller 112 along the feeding direction of the substrate 102. The tension adjusting member 116 includes a main body 1161, a driven roller 1162, and a counterweight 1163. The main body 1161 is rotatably disposed, and the driven roller 1162 and the counterweight 1163 are respectively disposed at opposite ends of the main body 1161. In addition, the counterweight 1163 is closer to the first guide roller 112 than the driven roller 1162. The tension adjusting member 116 is used to tension the substrate 102 of the film material.

The following describes a film material feeding method using a film material feeding device. Figures 4 to 6 are schematic diagrams of a film material feeding method according to an embodiment of the present invention.

As shown in Fig. 4, the film material 100 including the release film 101 and the substrate 102 is supplied by the film material supply mechanism 110 of the film material feeding device 10. The release film 101 is, for example but not limited to, a PET (polyethylene terephthalate) film, and the substrate 102 is, for example but not limited to, a dry film, a photoresist film or an ABF film.

The film material 100 is provided by the supply roller 111 of the film material supply mechanism 110. When the film material 100 is fed to the first guide roller 112, the release film 101 is partially separated from the substrate 102, and the first guide roller 112 feeds the release film 101 toward the take-up roller 113 and feeds the substrate 102 toward the second guide roller 115. The take-up roller 113 takes up the release film 101. The second guide roller 115 adjusts the feeding direction of the substrate 102 and feeds the substrate 102 toward the tension adjusting member 116. The substrate 102 crosses the driven roller 1162 of the tension adjusting member 116 and is then fed to the film fixing member 114.

As shown in FIG. 4 , the substrate 102 is fixed by the film fixing member 114. Specifically, the film fixing member 114 picks up and fixes the end 1021 of the substrate 102, so that the substrate 102 is prepared for the subsequent film laminating operation or laminating operation. When the film laminating operation or laminating operation is performed, the film fixing member 114 drives the substrate 102 to move down close to the substrate (not shown) to attach the substrate 102 to the substrate surface. Therefore, the state of the film material 100 in FIG. 4 can be understood as a standby state in which the film laminating operation or laminating operation is not performed, that is, the first guide roller 112 does not feed the release film 101 and the substrate 102 in FIG. 4 .

As shown in FIG. 5 and FIG. 6 , the film release process is performed by rotating the first guide roller 112 of the film material supply mechanism 110 by the power source 120, so that the release film 101 is further separated from the substrate 102. In particular, the power source 120 is controlled by the control unit 130 to rotate the first guide roller 112. In this embodiment, the power source 120 only drives the first guide roller 112, and drives the second guide roller 115 by gear transmission, but the present invention is not limited thereto. In other embodiments where the first guide roller 112 and the second guide roller 115 are not gear-engaged, the power source 120 can rotate the first guide roller 112 and the second guide roller 115 separately, or another power source can be added to rotate the second guide roller 115.

The control unit 130 operates the power source 120 in accordance with the requirement that a permanent separation line is not formed between the release film 101 and the substrate 102. Specifically, in FIG4 , since the film lamination operation or the lamination operation is not performed, the film material supply mechanism 110 does not need to feed the substrate 102 to the base plate, so the release film 101 and the substrate 102 stop separating. As the time when the film lamination operation or the lamination operation is not performed increases, a permanent separation line including bubbles may be formed at the position P where the release film 101 and the substrate 102 separate due to the natural shaking of the substrate 102 and the infiltration of air. Since the permanent separation line will only be generated when the release film 101 and the substrate 102 stop separating for more than a specific time, the specific time determined by the material properties can be understood as a critical time. In order to prevent the formation of a permanent separation line, the control unit 130 needs to control the power source 120 to continuously and repeatedly execute the film release process, or to repeatedly execute the film release process at a fixed time interval, wherein the fixed time interval is related to the critical time for forming a permanent separation line between the release film 101 and the substrate 102, that is, the fixed time interval is preferably shorter than the critical time.

To illustrate with a more specific example, the critical time for forming a permanent separation line is, for example, 30 seconds, that is, once the release film 101 and the substrate 102 stop separating for more than 30 seconds, a permanent separation line will be formed at position P. In this case, the control unit 130 controls the power source 120 to rotate intermittently at a fixed time interval of, for example, 25 seconds, and feeds the release film 101 and the substrate 102 at a speed of, for example, 0.1 mm/s, that is, the power source 120 is activated by the control unit 130 every 25 seconds to feed the release film 101 and the substrate 102. Alternatively, the control unit 130 can control the power source 120 to rotate continuously (the time interval can be understood as 0 seconds), and feed the release film 101 and the substrate 102 at a speed of, for example, 0.1 mm/s. Thus, in the standby state where no laminating or laminating operation is being performed, the release film 101 and the substrate 102 can still be separated by the first guide roller 112 and the power source 120, thereby preventing the formation of a permanent separation line. The specific time and speed listed above are only examples, and the present invention is not limited thereto.

In addition, in this embodiment, after or while the film release process is performed, the tension of the substrate 102 is adjusted by the tension adjusting member 116 to return to the tension value before the film release process is performed. Further, as shown in FIG5 and FIG6, in the standby state where the film laminating operation or the film pressing operation is not performed, the film material supply mechanism 110 does not need to feed the substrate 102 to the base plate, so the film fixing member 114 will keep picking up the end 1021 of the substrate 102. In this case, after or while the film release process is performed, the substrate 102 located between the film fixing member 114 and the first guide roller 112 along the feeding direction will become loose due to being actively fed by the first guide roller 112 (as shown by the dotted line in FIG5). At this time, through the torque generated by the counterweight portion 1163, the tension adjusting member 116 rotates so that the right end droops and the left end rises, thereby being able to re-tension the substrate 102.

In summary, according to the film material feeding device and the film material feeding method disclosed in the present invention, the film material feeding device includes a power source that allows the guide roller to actively rotate to feed the substrate and a control unit that can control the operation of the power source according to the need to not form a permanent film separation line. According to the film material feeding method disclosed in the present invention, the control unit controls the power source to continuously feed the substrate, or to feed the substrate at a fixed time interval that is less than the critical time that will generate a permanent film separation line. In this way, in the standby state where no film lamination operation or film pressing operation is performed, the release film and the substrate can still be separated by the guide roller and the power source, thereby preventing the formation of a permanent film separation line.

Although the embodiments of the present invention are disclosed as described above, they are not intended to limit the present invention. Anyone skilled in the relevant art may make slight changes to the shape, structure, features and spirit described in the scope of the application of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

1: Laminating machine 10: Film material feeding device 110: Film material feeding mechanism 111: Feeding roller 112: First guide roller 113: Winding roller 114: Film fixing member 115: Second guide roller 116: Tension adjusting member 1161: Main body 1162: Driven roller 1163: Counterweight part 120: Power source 130: Control unit 20: Carrier 30: Laminating device 100: Film material 101: Release film 102: Substrate 1021: End P: Position

FIG. 1 is a schematic diagram of a laminating machine according to an embodiment of the present invention. FIG. 2 is a three-dimensional schematic diagram of a film material feeding device of the laminating machine of FIG. 1 . FIG. 3 is a side view schematic diagram of the film material feeding device of FIG. 2 . FIG. 4 to FIG. 6 are schematic diagrams of a film material feeding method according to an embodiment of the present invention.

10: Film material feeding device

110: Film material supply mechanism

111: Supply roller

112: First guide roller

113: Rolling Roll

114: Membrane fixings

115: Second guide roller

116: Tension adjustment piece

1161: Subject

1162: Driven roller

1163: Counterweight

120: Power source

130: Control unit

Claims (9)

A film material feeding device comprises: A film material supply mechanism comprises: a supply roller for supplying a film material comprising a release film and a substrate; a first guide roller, arranged corresponding to the supply roller, the first guide roller being used to separate the release film from the substrate; and a take-up roller, arranged corresponding to the supply roller, the take-up roller being used to take up the release film separated from the substrate; a power source, connected to the first guide roller A guide roller; and a control unit, which is communicatively connected to the power source, and the control unit is used to operate the power source according to the requirement that no permanent separation line is formed between the release film and the substrate; wherein the control unit controls the power source to operate intermittently or continuously to drive the first guide roller to rotate to actively separate the substrate and the release film and feed the substrate. A film material feeding device as described in claim 1, wherein the film material supply mechanism further includes a film fixing member, and the film fixing member is used to fix the substrate provided from the first guide roller. A film material feeding device as described in claim 2, wherein the film material supply mechanism further includes a tension adjusting member, and the tension adjusting member is arranged between the film fixing member and the first guide roller. A film material feeding device as described in claim 1, wherein the film material supply mechanism further includes a tension adjusting member, the tension adjusting member includes a main body, a driven roller and a counterweight portion, the main body is rotatably arranged, and the driven roller and the counterweight portion are respectively arranged at opposite ends of the main body. A film material feeding device as described in claim 4, wherein the counterweight portion is closer to the first guide roller than the driven roller. The film material feeding device as described in claim 1, wherein the film material supply mechanism further includes a second guide roller, and the second guide roller is used to adjust the feeding direction of the substrate provided from the first guide roller. A film material feeding method comprises: Supplying a film material including a release film and a substrate by a film material supply mechanism, wherein the release film is separated from the substrate; fixing the substrate by a film fixing member; and performing a film release procedure, rotating a first guide roller of the film material supply mechanism by a power source to further separate the release film from the substrate; wherein the film release procedure is intermittently and repeatedly performed or the film release procedure is continuously and repeatedly performed. A film material feeding method as described in claim 7, wherein the film release process is repeatedly performed at a fixed time interval, and the fixed time interval is related to the critical time for forming a permanent separation line between the release film and the substrate. The film material feeding method as described in claim 7 further comprises: After or at the same time as executing the film release procedure, adjusting the tension of the substrate to return to the tension value before executing the film release procedure by a tension adjustment member.

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