Cover film laser cutting positioning device

Abstract

The utility model provides a positioning device for laser cutting of a cover film, which comprises a bearing plate, a laser cutting device, a laser cutting device and a laser cutting device, and is characterized in that the bearing plate comprises a front guide wheel component and a rear guide wheel component; the machining table top is arranged between the front guide wheel assembly and the rear guide wheel assembly; the first pressing unit is arranged on the side, close to the machining table top, of the front guide wheel assembly, and the second pressing unit is arranged on the side, close to the machining table top, of the rear guide wheel assembly; before cutting processing, the first pressing unit and the second pressing unit abut against the two sides of the cover film processing area respectively. The first pressing unit and the second pressing unit provide extra downward pressure for the cover film on the basis of the front guide wheel assembly and the rear guide wheel assembly, it is ensured that the cover film can be completely attached to a machining table top, the flatness of a machining area of the cover film is improved, and laser of laser cutting equipment accurately irradiates a designated position.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cutting equipment for cover films, and particularly relates to a laser cutting positioning device for cover films. Background Art

[0002] When manufacturing flexible printed circuit boards, in order to protect the copper foil from being exposed to the air, avoid oxidation of the copper foil, and provide a solder resist function in subsequent surface mounting processes, a polyimide film is covered on the copper circuit, which is called a cover film. As a cover film in a flexible printed circuit board, it has excellent high and low temperature resistance, electrical insulation, mechanical properties, radiation resistance, and dielectric properties.

[0003] Currently, laser cutting is usually used for large-scale production of cover films. Usually, a traction device is used to guide the cover film to the lower part of the laser cutting processing area. Under the traction force provided by the traction device, the cover film is fixed on the processing table, and laser cutting is used for cutting processing. However, in the prior art, during the processing, only the traction force generated by the traction device is simply relied on for limit fixation, and it is impossible to ensure that the plane of the cover film completely fits the processing table. An uneven plane is likely to cause the laser of the laser cutting equipment to be unable to accurately irradiate at the specified position, resulting in poor final cutting effects. Summary of the Utility Model

[0004] The utility model provides a laser cutting positioning device for cover films, aiming to solve the problem that in the prior art, only the traction force generated by the traction device is simply relied on for limit fixation during the processing, and it is impossible to ensure that the plane of the cover film completely fits the processing table.

[0005] The utility model is realized as follows. A laser cutting positioning device for cover films includes:

[0006] A carrier plate, which includes a front guide wheel assembly and a rear guide wheel assembly;

[0007] A processing table, which is arranged between the front guide wheel assembly and the rear guide wheel assembly;

[0008] A first pressing unit and a second pressing unit. The first pressing unit is arranged on one side of the front guide wheel assembly close to the processing table, and the second pressing unit is arranged on one side of the rear guide wheel assembly close to the processing table; before cutting processing, the first pressing unit and the second pressing unit respectively abut against both sides of the cover film processing area.

[0009] Preferably, the first pressing unit includes:

[0010] A first column and a second column, which are arranged oppositely;

[0011] Pressure roller member, the pressure roller member is assembled between the first upright post and the second upright post. When the pressure roller member is pushed by the first upright post and the second upright post, pressure is applied to the covering film.

[0012] Preferably, the first upright post includes a main rod and a sliding groove provided on the side wall of the main rod, and the main rod is fixed on the bearing plate.

[0013] Preferably, an adjusting assembly is provided on the first upright post;

[0014] The adjusting assembly includes a sliding block, an electric push rod and a spring; the spring and the electric push rod respectively abut against both ends of the sliding block.

[0015] Preferably, a sliding groove is provided on the side wall of the sliding block, and the sliding groove slides on a guide rail provided on the sliding groove.

[0016] Preferably, a holding ring is provided on the end face of the sliding block away from the electric push rod. One end of the spring extends into the holding ring, and the other end of the spring is nested on a guide rod provided on the sliding groove.

[0017] Preferably, a shaft hole is further provided on the sliding block, a bearing is provided in the shaft hole, and the pressure roller member is assembled in the bearing.

[0018] Preferably, the first upright post and the second upright post have the same structure.

[0019] Preferably, the pressure roller member includes: a shaft rod, a pressure roller and a pressure sensor; the shaft rod is arranged at both ends of the pressure roller, and the pressure roller is respectively assembled on the first upright post and the second upright post through the shaft rod.

[0020] Preferably, the pressure sensor is arranged on the circumferential side of the pressure roller.

[0021] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0022] The covering film laser cutting positioning device provided by the present utility model provides an additional downward pressure on the covering film on the basis of the front guide wheel assembly and the rear guide wheel assembly through the first pressing unit and the second pressing unit, ensuring that the covering film can completely fit the upper surface of the processing table, improving the flatness of the covering film processing area, enabling the laser of the laser cutting device to irradiate more accurately at the specified position, reducing the occurrence of inaccurate laser positioning of the laser cutting device due to insufficient flatness, and ensuring the processing accuracy of the final finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a covering film laser cutting positioning device provided by the present utility model.

[0024] Figure 2It is a schematic structural diagram of the front guide wheel assembly, rear guide wheel assembly and first pressing unit of a laser cutting positioning device for a covering film provided by the present utility model.

[0025] Figure 3 It is a schematic structural diagram of the first pressing unit of a laser cutting positioning device for a covering film provided by the present utility model.

[0026] Figure 4 It is a schematic structural diagram of the middle main rod of a laser cutting positioning device for a covering film provided by the present utility model.

[0027] Figure 5 It is a schematic structural diagram of the sliding groove, bearing and abutting ring of a laser cutting positioning device for a covering film provided by the present utility model.

[0028] Explanation of reference numerals:

[0029] 100, bearing plate;

[0030] 210, front guide wheel assembly; 220, rear guide wheel assembly;

[0031] 300, processing table;

[0032] 400, first pressing unit; 410, first column; 411, main rod; 412, sliding block; 4121, sliding groove; 4122, bearing; 4123, abutting ring; 413, electric push rod; 414, spring; 420, pressing roller member; 421, shaft rod; 422, pressing roller; 423, pressure sensor; 430, second column;

[0033] 500, second pressing unit;

[0034] 600, covering film. Detailed implementation manners

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0036] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0037] An embodiment of the present utility model provides a laser cutting positioning device for a cover film, as Figures 1-5 shown. The laser cutting positioning device for a cover film includes:

[0038] A carrier plate 100, which includes a front guide wheel assembly 210 and a rear guide wheel assembly 220;

[0039] A processing table 300, which is arranged between the front guide wheel assembly 210 and the rear guide wheel assembly 220, and a cover film laser cutting device is arranged above the processing table 300;

[0040] A first pressing unit 400 and a second pressing unit 500. The first pressing unit 400 is arranged on one side of the front guide wheel assembly 210 close to the processing table 300, and the second pressing unit 500 is arranged on one side of the rear guide wheel assembly 220 close to the processing table 300;

[0041] Wherein, the cover film 600 enters from one end of the front guide wheel assembly 210 and extends to the rear guide wheel assembly 220. The part of the cover film 600 located on the processing table 300 is the processing area, and the cover film 600 in the processing area is subjected to engraving processing from the laser cutting device; before the processing, the first pressing unit 400 and the second pressing unit 500 move to abut against both sides of the processing area of the cover film 600;

[0042] The laser cutting device, the carrier plate 100, the front guide wheel assembly 210, and the rear guide wheel assembly 220 in the present application are all mature devices in the prior art. The front guide wheel assembly 210 and the rear guide wheel assembly 220 are responsible for pulling the cover film 600 to move, continuously changing the processing area of the cover film 600 through the movement, so that the laser cutting device can complete the cutting processing of different processing areas; and the first pressing unit 400 and the second pressing unit 500 provide an additional downward pressure for the cover film 600 on the basis of the front guide wheel assembly 210 and the rear guide wheel assembly 220, ensuring that the cover film 600 can completely fit the upper surface of the processing table 300, improving the flatness of the processing area of the cover film 600, enabling the laser of the laser cutting device to irradiate more accurately at the specified position, reducing the situation of inaccurate laser positioning of the laser cutting device caused by insufficient flatness, and ensuring the processing accuracy of the final product;

[0043] As a preferred implementation manner in this embodiment, the first pressing unit 400 includes:

[0044] A first upright post 410 and a second upright post 430, the first upright post 410 and the second upright post 430 having the same structure and being arranged oppositely;

[0045] A roller member 420, the roller member 420 being assembled between the first upright post 410 and the second upright post 430, and when the height of the roller member 420 can be adjusted by an adjustment assembly provided on the first upright post 410 and the second upright post 430 to apply pressure to the covering film 600;

[0046] The first upright post 410 and the second upright post 430 have the same structure. Taking the adjustment assembly provided on the first upright post 410 as an example, the first upright post 410 includes a main rod 411 and a sliding groove provided on the side wall of the main rod 411. The adjustment assembly includes a sliding block 412 slidable in the sliding groove, an electric push rod 413, and a spring 414; the spring 414 and the electric push rod 413 respectively abut against both ends of the sliding block 412;

[0047] In the initial state, the spring 414 is in a compressed state. When it is necessary to adjust the height of the roller member 420 by the adjustment assembly, the electric push rod 413 actively descends in height. Since there is no support at one end of the sliding block 412 close to the electric push rod 413, the spring 414 will push the sliding block 412 downward to complete the purpose of overall height adjustment;

[0048] Here, during the process of the covering film 600 being pressed, the supporting force provided by the spring 414 is adopted. The main reason for using the spring 414 as the pressure source is that the spring 414 enables the roller member 420 to have floating property, and it can better fit the covering film 600 during the rotation and pressing process of the roller member 420, avoiding damage to the covering film 600 caused by a rigid connection structure during the movement of the covering film 600;

[0049] As a preferred implementation manner in this embodiment, a sliding groove 4121 is provided on the side wall of the sliding block 412, the sliding groove 4121 slides on a guide rail provided on the sliding groove, and an abutting ring 4123 is provided on the end face of the sliding block 412 away from the electric push rod 413. One end of the spring 414 extends into the abutting ring 4123, and the other end of the spring 414 is nested on a guide rod provided on the sliding groove;

[0050] The electric push rod 413 is in contact connection with the end face of the sliding block 412 away from the spring 414;

[0051] A shaft hole is further provided on the sliding block 412, a bearing 4122 is provided in the shaft hole, and the roller member 420 is assembled in the bearing 4122;

[0052] As a preferred implementation manner in this embodiment, the pressing roller member 420 includes: a shaft rod 421, a pressing roller 422, and a pressure sensor 423; the shaft rod 421 is disposed at both ends of the pressing roller 422, the shaft rod 421 is assembled in the bearing 4122, and the pressure sensor 423 is arranged on the circumferential side of the pressing roller 422; the rotational function here is to enable the pressing roller 422 to contact the covering film 600 more flexibly when contacting, so as to avoid damage to the covering film 600 caused by rigid pressing and fitting.

[0053] In this embodiment, the pressure sensor 423 adopts the existing technology, such as a flexible thin-film pressure sensor. The pressure value applied on the pressing roller 422 is mainly collected by the pressure sensor 423. Generally, the first pressing unit 400 and the second pressing unit 500 apply pressure during the processing. By the pressure value, the pressing situation can be sensed to avoid over-pressing and also avoid the situation where the pressure is not applied in place and the pressing effect cannot be achieved.

[0054] When replacing the processed area of the covering film 600, the first pressing unit 400 and the second pressing unit 500 will move upward and will not squeeze the covering film 600, enabling the front guiding wheel assembly 210 and the rear guiding wheel assembly 220 to drive the covering film 600 to move more conveniently, and at the same time avoiding damage to the pressure sensor 423 during the rotation process.

[0055] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be in other sequences or performed simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that essentially do not depart from the concept of the present invention, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A laser cutting positioning device for a covering film, characterized in that, Comprising: A carrier plate (100), the carrier plate (100) includes a front guide wheel assembly (210) and a rear guide wheel assembly (220); A processing tabletop (300), the processing tabletop (300) is arranged between the front guide wheel assembly (210) and the rear guide wheel assembly (220); A first pressing unit (400) and a second pressing unit (500), the first pressing unit (400) is arranged on one side of the front guide wheel assembly (210) close to the processing tabletop (300), and the second pressing unit (500) is arranged on one side of the rear guide wheel assembly (220) close to the processing tabletop (300); before cutting processing, the first pressing unit (400) and the second pressing unit (500) respectively abut on both sides of the processing area of the covering film (600).

2. The laser cutting positioning device for a cover film according to claim 1, wherein The first pressing unit (400) includes: A first column (410) and a second column (430), the first column (410) and the second column (430) are arranged oppositely; A pressing roller member (420), the pressing roller member (420) is assembled between the first column (410) and the second column (430), and when the pressing roller member (420) is pushed by the first column (410) and the second column (430), it applies pressure to the covering film (600).

3. The laser cutting positioning device for a cover film according to claim 2, wherein The first column (410) includes a main rod (411) and a sliding groove provided on the side wall of the main rod (411), and the main rod (411) is fixed to the carrier plate (100).

4. The laser cutting positioning device for a cover film according to claim 3, wherein An adjusting assembly is provided on the first column (410); The adjusting assembly includes a sliding block (412), an electric push rod (413) and a spring (414); the spring (414) and the electric push rod (413) respectively abut on both ends of the sliding block (412).

5. The laser cutting positioning device for a cover film according to claim 4, characterized in that A sliding groove (4121) is provided on the side wall of the sliding block (412), and the sliding groove (4121) slides on a guide rail provided on the sliding groove.

6. The laser cutting positioning device for a cover film according to claim 5, wherein, An abutting ring (4123) is provided on the end face of the sliding block (412) away from the electric push rod (413), one end of the spring (414) extends into the abutting ring (4123), and the other end of the spring (414) is nested on a guide rod provided on the sliding groove.

7. The laser cutting positioning device for a cover film according to claim 6, characterized in that, A shaft hole is further provided on the sliding block (412), a bearing (4122) is provided in the shaft hole, and the pressing roller member (420) is assembled in the bearing (4122).

8. The laser cutting positioning device for a cover film according to claim 7, wherein The first column (410) and the second column (430) have the same structure.

9. The laser cutting positioning device for a cover film according to claim 8, wherein, The pressing roller member (420) includes: a shaft rod (421), a pressing roller (422) and a pressure sensor (423); the shaft rod (421) is arranged at both ends of the pressing roller (422), and the pressing roller (422) is respectively assembled on the first column (410) and the second column (430) through the shaft rod (421).

10. A laser cutting positioning device for a cover film according to claim 9, characterized in that, The pressure sensor (423) is arranged on the periphery of the pressing roller (422).

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