CN112390064A

CN112390064A - Film cutting device

Info

Publication number: CN112390064A
Application number: CN201911002171.7A
Authority: CN
Inventors: 官宇
Original assignee: Dezhong Suzhou Laser Technology Co ltd
Current assignee: Dezhong Suzhou Laser Technology Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2021-02-23

Abstract

The invention provides a film cutting device, and belongs to the field of precision laser processing. It includes the bottom plate and sets up swager constructs, cuts mechanism and power unit on the bottom plate, and swager constructs and is used for fixing a position the film, cuts the movably setting of mechanism on the bottom plate for cut the film, power unit is used for driving and cuts the mechanism and removes. The pressing mechanism can position the film to be cut, so that the film is prevented from shifting in the cutting process; the cutting mechanism is different from the opening and closing cutting mode of the original guillotine mode, but adopts moving cutting, and the position of the cutting mechanism is moved, so that the film where the cutting mechanism arrives is accurately cut, the size of the cutting mechanism is not limited by the breadth of the film, the cutting precision can be improved, the size of the whole device is reduced, the device is light and handy, the movement and the use are easy, and the production cost is reduced.

Description

Film cutting device

Technical Field

The invention relates to the field of precision laser processing, in particular to a film cutting device.

Background

The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance. Has the characteristics of high wiring density, light weight, thin thickness and good bending property, and is widely used.

In the manufacturing process of the flexible circuit board, the flexible covering film is pressed and pressed, which is an important process for the flexible circuit board. The flexible cover film is typically cut prior to use. Most be the hand hay cutter section at current mechanism of cutting, it is as good as with ordinary hand hay cutter principle, though this kind of cutting method cutting speed is fast, and can the higher membrane class material of cutting strength, but the processing cost of hand hay cutter itself is higher, the breadth when needs cut membrane material is wider more, the hand hay cutter also needs longer, weight is big more, the structure is also heavier, the machining precision also difficult assurance more, the price just also is higher relatively, not only make the membrane material cut the degree of difficulty big, the precision is low, simultaneously manufacturing cost is also high.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a film cutting device for solving the problems of difficulty and low precision in cutting a wide film in the prior art.

To achieve the above and other related objects, the present invention provides a film cutting apparatus, comprising: the film cutting device comprises a base plate, a pressing mechanism arranged on the base plate, a cutting mechanism and a power mechanism, wherein the pressing mechanism is used for positioning a film, the cutting mechanism is movably arranged on the base plate and used for cutting the film, and the power mechanism is used for driving the cutting mechanism to move.

In an embodiment of the invention, the pressing mechanism includes a rigid pressing plate and a flexible pressing plate, two ends of the rigid pressing plate and two ends of the flexible pressing plate are fixed on the bottom plate through brackets for cooperatively clamping the film, and the flexible pressing plate is disposed below the rigid pressing plate.

In an embodiment of the present invention, the cutting assembly includes a circular blade and a mounting seat, the mounting seat is movably disposed on the bottom plate, and the circular blade is rotatably disposed on the mounting seat.

In an embodiment of the present invention, the cutting assembly further includes a cutter shaft, one end of the cutter shaft is rotatably disposed on the mounting base through a bearing assembly, the other end of the cutter shaft is fixedly connected to the circular blade, and the cutter shaft is in clearance fit with the bearing assembly.

In an embodiment of the present invention, a clearance between the cutter shaft and the bearing assembly is 0.05mm to 0.10 mm.

In an embodiment of the invention, the cutting assembly further includes circular rubber, the circular rubber is fixed on the cutter shaft, and the circumferential surface of the circular rubber is in interference fit with the flexible pressing plate.

In an embodiment of the present invention, the cutting assembly further includes a spring, a pressing boss is disposed at one end of the cutter shaft close to the circular blade, one end of the spring abuts against the pressing boss, the other end of the spring abuts against the bearing assembly, and the spring is in a compressed state.

In an embodiment of the invention, the power mechanism includes a motor, a first synchronizing wheel, a second synchronizing wheel and a synchronous belt, the motor is fixed on the bottom plate, the first synchronizing wheel and the second synchronizing wheel are rotatably disposed on the bottom plate, the first synchronizing wheel or the second synchronizing wheel is fixedly connected to a rotating shaft of the motor, the synchronous belt is rotatably disposed on the first synchronizing wheel and the second synchronizing wheel, the bottom plate is provided with a guide rail, and the cutting mechanism is movably disposed on the guide rail and fixedly connected to the synchronous belt.

As described above, the film cutting device of the present invention has the following beneficial effects: the pressing mechanism can position the film to be cut, so that the film is prevented from shifting in the cutting process; the cutting mechanism is different from the opening and closing cutting mode of the original guillotine mode, but adopts moving cutting, and the position of the cutting mechanism is moved, so that the film where the cutting mechanism arrives is accurately cut, the size of the cutting mechanism is not limited by the breadth of the film, the cutting precision can be improved, the size of the whole device is reduced, the device is light and handy, the movement and the use are easy, and the production cost is reduced.

Drawings

Fig. 1 is a schematic view showing an overall structure of a film cutting apparatus according to an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view illustrating a connection structure between a pressing mechanism and a support of the film cutting apparatus according to the embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion C in fig. 3.

Fig. 5 is a schematic partial sectional view of a film cutting apparatus according to an embodiment of the present invention.

Fig. 6 is a schematic diagram showing a partial enlarged structure at B in fig. 3.

Description of the element reference numerals

1-a pressing mechanism; 2-cutting mechanism; 3, a power mechanism; 4-a rigid pressure plate; 5-a flexible material pressing plate; 6-a scaffold; 7-a bottom plate; 8, a motor; 9-a first synchronizing wheel; 10-a second synchronizing wheel; 11-a synchronous belt; 12-a guide rail; 13-circular blade; 14-a mounting seat; 15-cutter shaft; 16-a bearing assembly; 17-a spring; 18-pressing the boss; 19-round rubber; 20-fixing block; 21-a first connection hole; 22-a second connection hole; 23-a third connection hole; 24-a fourth connection hole; a-a first side; b-the second side.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1, the present invention provides a film cutting device, which includes a bottom plate 7, and a pressing mechanism 1, a cutting mechanism 2 and a power mechanism 3 disposed on the bottom plate 7.

The pressing mechanism 1 is used for positioning the film, the cutting mechanism 2 is movably arranged on the bottom plate 7 and used for cutting the film, and the power mechanism 3 is used for driving the cutting mechanism 2 to move.

The pressing mechanism 1 can position the film to be cut, so that the film is prevented from shifting in the cutting process; cutting mechanism 2 is different from the mode that opens and shuts of hand hay cutter form in the past, but adopts the removal to cut, cuts the position of mechanism 2 through the removal to make the film that cuts the mechanism 2 place of arriving accurately cut, consequently cut the size of mechanism 2 and not restricted by the breadth of film, not only can promote the cutting precision, reduce the volume of whole device simultaneously, make the device light and handy, easily remove and use, reduce manufacturing cost.

Referring to fig. 1 and 2, the pressing mechanism 1 includes a rigid pressing plate 4 and a flexible pressing plate 5. Both ends of the rigid pressure plate 4 and the flexible pressure plate 5 are fixed on the bottom plate 7 through the support 6 and are used for clamping a film in a matching manner, and the flexible pressure plate 5 is arranged below the rigid pressure plate 4.

In this embodiment, the flexible nip plate 5 is fixed parallel to the base plate 7, and the first side a of the rigid nip plate 4 is aligned with the second side b of the flexible nip plate 5.

Referring to fig. 3-4, both ends of the rigid pressure plate 4 are provided with a first connection hole 21 and a second connection hole 22; the flexible pressure plate 5 is in a long strip plate shape, both ends of the flexible pressure plate are provided with third connecting holes 23, and the support 6 is provided with fourth connecting holes 24. The rigid pressure plate 4 is connected with a fourth connecting hole 24 on the bracket 6 through a first connecting hole 21 matched with a screw, so as to be fixed on the bracket 6; the flexible pressure plate 5 is connected with the second connecting hole 22 through the third connecting hole 23 and the matching screw, so as to be fixed on the rigid pressure plate 4. Because the flexible pressure plate 5 is relatively soft, other positions except two ends of the flexible pressure plate 5 slightly fall under the action of gravity, so that a gap of about 0.3mm exists between the flexible pressure plate 5 and the rigid pressure plate 4, and the gap is enough to be penetrated by a film.

Referring to fig. 1, the power mechanism 3 includes a motor 8, a first synchronizing wheel 9, a second synchronizing wheel 10, and a synchronizing belt 11.

The motor 8 is fixed on the bottom plate 7, the first synchronizing wheel 9 and the second synchronizing wheel 10 are rotatably arranged on the bottom plate 7, and the first synchronizing wheel 9 or the second synchronizing wheel 10 is fixedly connected with a rotating shaft of the motor 8. The synchronous belt 11 is rotatably arranged on the first synchronous wheel 9 and the second synchronous wheel 10, and the bottom plate 7 is provided with a guide rail 12. The cutting mechanism 2 is movably arranged on the guide rail 12 and is fixedly connected with the synchronous belt 11.

Referring to fig. 5 and 6, the cutting mechanism 2 includes a circular blade 13, a mounting seat 14, and a cutter shaft 15. A mount 14 is movably provided on the base plate 7, and the circular blade 13 is rotatably provided on the mount 14. Specifically, the mounting seat 14 is movably disposed on the guide rail 12 and fixedly connected to the timing belt 11. When the motor 8 works, the motor 8 rotates to drive the first synchronous wheel 9 to rotate, and under the matching action of the second synchronous wheel 10, the synchronous belt 11 rotates, so that the mounting seat 14 is driven to move along the guide rail 12.

One end of the cutter shaft 15 is rotatably arranged on the mounting seat 14 through a bearing assembly 16, and the other end is fixedly connected with the circular blade 13. The cutter shaft 15 is in clearance fit with the bearing assembly 16, specifically, the clearance between the cutter shaft 15 and the inner hole of the bearing assembly 16 is 0.05mm-0.10mm, so that the cutter shaft 15 can have a slight degree of freedom of deflection along the axial direction of the cutter shaft 15, and the circular blade 13 also has a certain degree of freedom of deflection.

Referring to fig. 6, the cutting mechanism 2 further includes a spring 17. The shaft body of the cutter shaft 15 is arranged in the spring 17 in a penetrating manner, a pressing boss 18 is arranged at one end, close to the circular blade 13, of the cutter shaft 15, one end of the spring 17 abuts against the pressing boss 18, the other end of the spring 17 abuts against the bearing assembly 16, and the spring 17 is in a compressed state. Since the spring 17 is always in a compressed state, the pressing boss 18 of the cutter shaft 15 and the bearing assembly 16 are always subjected to the elastic force from the spring 17. The bearing assembly 16 is thus pressed into the mounting seat 14, only able to rotate, and unable to displace in the direction of the axis of the cutter shaft 15, while the cutter shaft 15, by virtue of the elastic force from the spring 17, always tends to move along its own axis and to carry the circular blade 13 away from the bearing assembly 16. In the present embodiment, the cutter shaft 15 always tends to move toward the pressing mechanism 1, so that the circular blade 13 always abuts against the first side surface a of the rigid pressing plate 4 and the second side surface b of the flexible pressing plate 5, and the circular blade 13 can always press and cut in the horizontal direction.

The cutting mechanism 2 further includes a circular rubber 19. The circular rubber 19 is fixed on the cutter shaft 15, and the circumferential surface of the circular rubber 19 is in interference fit with the flexible pressure plate 5. The circular rubber 19 and the circular blade 13 are coaxially fixed, and the circular blade 13 is disposed between the circular rubber 19 and the pressing boss 18. In this embodiment, the cutter shaft 15 is further provided with a fixing block 20, and the fixing block 20 is fixed at the end of the cutter shaft 15 by screws, and is used for fixing the circular rubber 19 and the circular blade 13 on the cutter shaft 15 in a pressing manner by matching with the pressing boss 18. In other embodiments, the circular rubber can be fixed to the cutter shaft by gluing, and the circular blade is fixed by the cooperation of the circular rubber and the pressing boss.

The circumferential surface of the circular rubber 19 is in interference fit with the flexible pressing plate 5, and the circular rubber 19 is fixed on the cutter shaft, so the flexible pressing plate 5 downwards extrudes the circular rubber 19, and the circular rubber 19 always has a downward rotating movement trend; meanwhile, the circular rubber 19 is closely attached to the circular blade 13, so that the circular blade 13 also has a downward rotating movement tendency, the knife surface of the circular blade 13 is always closely attached to the rigid pressure plate 4, and the circular blade 13 is also in a compression shearing state in the vertical direction. Therefore, no matter which position the mounting seat 14 runs to, the circular blade 13 can be kept in a pressing and shearing state in the horizontal and vertical directions, and the flexible structure avoids interference or clearance caused by non-parallelism or machining errors between the rigid pressure plate 4 and the guide rail 12, so that the requirement on mounting accuracy is greatly reduced.

When the mounting seat 14 moves to drive the cutter shaft 15 and the circular blade 13 to move, the circumferential surface of the circular rubber 19 is in interference fit with the flexible pressure plate 5, the circular rubber 19 is extruded and deformed, the circular rubber 19 tends to roll under the extrusion of the flexible pressure plate 5 along with the continuous advance of the mounting seat 14, and meanwhile, the circular rubber 19 is fixed on the cutter shaft 15, and the cutter shaft 15 can rotate under the action of the bearing assembly 16, so that the circular rubber 19 rolls to drive the cutter shaft 15 to rotate, and the circular blade 13 fixed on the cutter shaft 15 is driven to roll to cut a film. Secondly, due to the interference fit between the flexible pressure plate 5 and the circular rubber 19, the flexible pressure plate 5 is tightly attached to the rigid pressure plate 4 under the action of the circular rubber 19, so that the film is also pressed and fixed, and the fixed film is cut off due to the rotation cutting of the circular blade 13. As the mounting base 14 is continuously advanced, the pressing point and the cutting point are continuously advanced, the cut film is released due to the separation of the circular rubber 19, and finally the whole film is cut.

In conclusion, the circular blade 13 is adopted, so that the market cost is low, and the overall production cost can be greatly reduced; the circular blade 13 is small in size, convenient to replace, free of installation accuracy requirements, convenient to install and use, and convenient to move, and the size of the whole device is reduced; due to the real-time movable matching of the pressing point and the cutting point, a softer film can be easily cut, and meanwhile, the limitation of cutting length does not exist, so that a film with an ultra-large breadth can be cut; the device is only used for the subsequent cutting process of windowing the soft cover film, so the time for cutting one piece of film does not become a limiting factor of efficiency, because the windowing process of the soft cover film requires 1 to 2 minutes, within which the cutting work of the previous piece of film is enough to be completed. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A film cutting apparatus, comprising: the film cutting device comprises a base plate, a pressing mechanism arranged on the base plate, a cutting mechanism and a power mechanism, wherein the pressing mechanism is used for positioning a film, the cutting mechanism is movably arranged on the base plate and used for cutting the film, and the power mechanism is used for driving the cutting mechanism to move.

2. The film slitting device as set forth in claim 1 wherein: the pressing mechanism comprises a rigid pressing plate and a flexible pressing plate, two ends of the rigid pressing plate and two ends of the flexible pressing plate are fixed on the bottom plate through supports and are used for being matched with each other to clamp the film, and the flexible pressing plate is arranged below the rigid pressing plate.

3. The film slitting device as set forth in claim 2 wherein: the cutting assembly comprises a circular blade and a mounting seat, the mounting seat is movably arranged on the bottom plate, and the circular blade is rotatably arranged on the mounting seat.

4. The film slitting device as set forth in claim 3 wherein: the cutting assembly further comprises a cutter shaft, one end of the cutter shaft is rotatably arranged on the mounting seat through a bearing assembly, the other end of the cutter shaft is fixedly connected with the circular blade, and the cutter shaft is in clearance fit with the bearing assembly.

5. The film slitting device as set forth in claim 4 wherein: the clearance between the cutter shaft and the bearing assembly is 0.05mm-0.10 mm.

6. The film slitting device as set forth in claim 5 wherein: the cutting assembly further comprises circular rubber, the circular rubber is fixed on the cutter shaft, and the circumferential surface of the circular rubber is in interference fit with the flexible pressure plate.

7. The film slitting device as set forth in claim 6 wherein: the cutting assembly further comprises a spring, a pressing boss is arranged at one end, close to the circular blade, of the cutter shaft, one end of the spring abuts against the pressing boss, the other end of the spring abuts against the bearing assembly, and the spring is in a compressed state.

8. The film slitting device as set forth in any one of claims 1 to 7, wherein: the power mechanism comprises a motor, a first synchronizing wheel, a second synchronizing wheel and a synchronous belt, the motor is fixed on the bottom plate, the first synchronizing wheel and the second synchronizing wheel are rotatably arranged on the bottom plate, the first synchronizing wheel or the second synchronizing wheel is fixedly connected with a rotating shaft of the motor, the synchronous belt is rotatably arranged on the first synchronizing wheel and the second synchronizing wheel, a guide rail is arranged on the bottom plate, and the cutting mechanism is movably arranged on the guide rail and is fixedly connected with the synchronous belt.