Flexible circuit board punching device

Abstract

The utility model discloses a flexible circuit board punching device which comprises an upper die and a lower cutting die, the upper die is arranged above the lower cutting die, the lower cutting die comprises a plurality of sub-dies, and the sub-dies are arranged side by side along the length direction of the lower cutting die; the lower cutting die is arranged on the carrying table, and limiting edges used for limiting movement of the lower cutting die are arranged on the periphery of the carrying table; the first driving mechanism and the second driving mechanism are both connected with the upper die, the first driving mechanism is used for driving the upper die to reciprocate in the length direction of the lower cutting die, and the second driving mechanism is used for driving the upper die to reciprocate in the vertical direction. According to the die, one-time punching forming can be achieved on one device, the number of used devices is reduced, the production efficiency is improved, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit board production, and particularly relates to a flexible circuit board punching device. Background Technique

[0002] A flexible printed circuit board (FPC for short) is a printed circuit board made of polyimide or polyester film as the substrate, which has high reliability and excellent flexibility. It can be bent and folded to adapt to applications with different shapes and space limitations, thereby reducing volume, weight, improving product stability and reliability, and meeting some special design requirements. At the same time, flexible printed circuit boards also have the advantages of low production cost, short production cycle and large-scale production, and are widely used in fields such as mobile phones, tablet computers, smart wearable devices, automotive electronics, and medical devices.

[0003] In the production of flexible printed circuit boards, punching is an important process of flexible printed circuit boards, which is to separate the circuit boards according to specific shapes and sizes to meet some special design requirements. At present, the product size of flexible printed circuit boards is getting larger and larger, and the forming of the outer shape of large-size flexible circuit boards generally requires multiple repeated processing by multiple small servo stamping devices to complete punching. However, multiple processing requires switching operations of multiple devices; due to the relatively thin thickness of large-size flexible circuit boards, multiple product movements and handling processes during the switching of device operations are very likely to produce creases, which not only reduces production efficiency but also affects product quality. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a flexible circuit board punching device, which can be punched and formed at one time on one device, reduces the number of devices used, improves production efficiency, and ensures product quality.

[0005] To solve the above technical problems, an embodiment of the utility model provides a flexible circuit board punching device, including:

[0006] An upper die and a lower cutting die, the upper die is arranged above the lower cutting die, the lower cutting die includes a plurality of sub-dies, and the plurality of sub-dies are arranged side by side along the length direction of the lower cutting die;

[0007] A carrier table, the lower cutting die is arranged on the carrier table, and a limiting edge for restricting the movement of the lower cutting die is arranged around the carrier table;

[0008] A first driving mechanism and a second driving mechanism, both of which are connected to the upper die, the first driving mechanism is used to drive the upper die to reciprocate along the length direction of the lower cutting die, and the second driving mechanism is used to drive the upper die to reciprocate in the vertical direction.

[0009] Optionally, the lower surface of the upper mold is a flat plate, and multiple cutting edges are provided on the upper surface of each sub-mold of the lower cutting die.

[0010] Optionally, the length of each sub-mold is less than or equal to the length of the upper mold.

[0011] Optionally, the lengths of each sub-mold are the same and equal to the length of the upper mold.

[0012] Optionally, when two adjacent cutting edges are arranged side by side, the outer edges of the two cutting edges facing each other are arc-shaped.

[0013] Optionally, it further includes a cushion film mechanism arranged on the upper mold. The cushion film mechanism includes an unwinding unit for releasing the cushion film and a winding unit for recycling the cushion film. The cushion film released by the unwinding unit passes through the lower surface of the upper mold and is then recycled by the winding unit.

[0014] Optionally, it further includes a third driving mechanism connected to the cushion film mechanism for driving the cushion film mechanism to reciprocate a predetermined distance in the front-back direction, and the front-back direction is perpendicular to the length direction and the vertical direction of the lower cutting die.

[0015] Optionally, the predetermined distance is from 0.1 mm to 20 mm.

[0016] Optionally, it further includes a fourth driving mechanism and a guide rail. The guide rail extends in the front-back direction. A slider is further provided below the carrier table, and the slider is slidably connected to the guide rail. The fourth driving mechanism is connected to one side of the carrier table for driving the carrier table to reciprocate in the front-back direction.

[0017] Optionally, a plurality of load-bearing blocks are provided below the carrier table. The number of load-bearing blocks corresponds to the number of sub-molds and are respectively located below the sub-molds.

[0018] Optionally, the first driving mechanism includes a first motor, a lead screw, and a first connecting member. The output end of the first motor is connected to one end of the lead screw. The lead screw extends along the length direction of the lower cutting die and is located below the carrier table. The first connecting member connects the upper mold and the lead screw.

[0019] Optionally, the second driving mechanism includes a second motor and four guide posts. The driving end of the second motor is connected to the upper mold. The four corner parts of the upper mold are respectively slidably connected to the four guide posts. The lower ends of the four guide posts are connected to the lead screw. The second motor drives the upper mold to reciprocate in the vertical direction along the four guide posts.

[0020] The beneficial effects of the present utility model are:

[0021] According to the flexible circuit board punching device provided by the present utility model, the lower die is set to include a plurality of sub-dies arranged side by side. When placing the flexible circuit board on the lower die, the upper die is driven by the second driving mechanism to move downward in the vertical direction onto the sub-die to complete one cutting. The upper die is driven by the first driving mechanism to move along the length direction of the lower die, so as to complete the punching of the entire flexible circuit board through multiple cuttings. For the flexible circuit board punching device of the present utility model, the lower die is composed of a plurality of sub-dies, which avoids the too large size of the lower die and is more convenient for installation and maintenance. In addition, through the cooperation of the upper die and the lower die, the punching operation can be completed with one device, improving the production efficiency and ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings, the proportions of each part do not necessarily draw according to the actual proportion.

[0023] Figure 1 The front view showing the flexible circuit board punching device provided by an embodiment of the present utility model;

[0024] Figure 2 The top view showing the flexible circuit board punching device provided by an embodiment of the present utility model;

[0025] Figure 3 The side view showing the connection part of adjacent cutting edges provided by an embodiment of the present utility model.

[0026] Explanation of the reference numerals of the drawing elements:

[0027] 1. Upper die, 2. Lower die, 21. Sub-die, 22. Cutting edge, 3. Carrier table, 4. First driving mechanism, 41. First motor, 42. Lead screw, 5. Second driving mechanism, 51. Second motor, 52. Guide post, 53. Mounting plate, 6. Pad film mechanism, 61. Unwinding unit, 62. Rewinding unit, 8. Guide rail, 9. Load-bearing block, 10. Support platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0029] Reference is now made to the accompanying drawings to describe exemplary embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely, and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the drawings are not intended to limit the present invention.

[0030] Unless otherwise specified, the terms used herein, including scientific and technical terms, have the ordinary meaning understood by those skilled in the art. Additionally, it can be understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant fields, and should not be understood in an idealized or overly formal sense.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0032] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] As Figure 1 and Figure 2 shown, Figure 1 and Figure 2The front view and top view of the flexible circuit board punching device provided by an embodiment of the present utility model are respectively shown. In this embodiment, the flexible circuit board punching device includes: an upper die 1, a lower die 2, a carrier 3, a first driving mechanism 4, and a second driving mechanism 5. The upper die 1 is arranged above the lower die 2. The lower die 2 includes a plurality of sub-dies 21, and the plurality of sub-dies 21 are arranged side by side along the length direction of the lower die 2. The lower die 2 is arranged on the carrier 3, and limiting edges for restricting the movement of the lower die 2 are provided around the carrier 3, so as to limit the lower die 2 within the limiting edges of the carrier 3 and prevent the lower die 2 from moving. Both the first driving mechanism 4 and the second driving mechanism 5 are connected to the upper die 1. Among them, the first driving mechanism 4 is used to drive the upper die 1 to reciprocate along the length direction of the lower die 2 (such as Figure 1 shown by the x direction in Figure 1 ), and the second driving mechanism 5 is used to drive the upper die 1 to reciprocate in the vertical direction (such as shown by the y direction in ).

[0034] The lower die 2 is arranged to include a plurality of sub-dies 21 arranged side by side. When the flexible circuit board is placed on the lower die 2, the second driving mechanism 5 drives the upper die 1 to move downward in the vertical direction onto the sub-die 21 to complete one cutting. The first driving mechanism 4 drives the upper die 1 to move along the length direction of the lower die 2, so as to complete the punching of the entire flexible circuit board through multiple cuttings. For the flexible circuit board punching device of the present utility model, the lower die 2 is composed of a plurality of sub-dies 21, which avoids the too large size of the lower die 2 and is more convenient for installation and maintenance. In addition, through the cooperation of the upper die 1 and the lower die 2, the punching operation can be completed by using one device, which improves the production efficiency and ensures the product quality.

[0035] Specifically, as Figure 1 and Figure 2 shown, in this embodiment, the lower die 2 is composed of a plurality of sub-dies 21 arranged side by side in the carrier 3, and the flexible circuit board to be punched is placed on the upper surface of the lower die 2. The upper die 1 is placed above one of the sub-dies 21 of the lower die 2 and moves downward under the drive of the second driving mechanism 5 to press on the lower die 2, thereby completing one punching. Then, the first driving mechanism 4 drives the upper die 1 to move to the position of the next sub-die 21, and the upper die 1 moves downward again under the drive of the second driving mechanism 5 and presses on the lower die 2, thereby completing the next punching. By gradually moving the upper die 1 along the length direction of the lower die 2 by the first driving mechanism 4 and driving the upper die 1 to reciprocate in the vertical direction by the second driving mechanism 5, the punching of the entire flexible circuit board is completed.

[0036] Furthermore, the lower surface of the upper die 1 is a flat plate, and a plurality of cutting edges 22 are provided on the upper surface of each sub-die 21 of the lower die 2.

[0037] Specifically, a plurality of cutting edges 22 are provided on the sub-mold 21, and the arrangement of the cutting edges 22 can be set according to the shape and size of the flexible circuit board to be cut, so that when the upper mold 1 is pressed onto the sub-mold 21, the flexible circuit board is punched and formed.

[0038] Optionally, positioning posts are provided on the upper surface of the sub-mold 21 for positioning when installing the flexible circuit board.

[0039] Further, the length of each sub-mold 21 is less than or equal to the length of the upper mold 1.

[0040] Further, the lengths of each sub-mold 21 are the same and equal to the length of the upper mold 1. Thus, the upper mold 1 corresponds to one sub-mold 21, avoiding repeated punching in one part, and can avoid uneven punching force caused by the error of the two sub-molds 21 on the horizontal plane.

[0041] Further, as Figure 3 shown in the part circled by the circle in the figure, in this embodiment, when two adjacent cutting edges 22 are arranged side by side, the outer edges of the two cutting edges 22 facing each other are arc-shaped.

[0042] If two adjacent cutting edges 22 are spliced linearly, there cannot be any step difference between the two segments, that is, there cannot be any precision error, which is extremely difficult to achieve in the punching operation. Therefore, setting the splicing position of the two cutting edges 22 into an arc shape can reduce the operation difficulty and improve the product quality.

[0043] Further, the first driving mechanism 4 includes a first motor 41, a lead screw 42 and a first connecting member. The output end of the first motor 41 is connected to one end of the lead screw 42. The lead screw 42 extends along the length direction of the lower die 2 and is located below the carrier 3. The first connecting member connects the upper mold 1 and the lead screw 42.

[0044] Further, the second driving mechanism 5 includes a second motor 51 and four guide posts 52. The driving end of the second motor 51 is connected to the upper mold 1. The four corner portions of the upper mold 1 are respectively slidably connected to the four guide posts 52. The lower ends of the four guide posts 52 are connected to the lead screw 42. The upper mold 1 is driven by the second motor 51 to reciprocate vertically along the four guide posts 52.

[0045] Specifically, in this embodiment, the upper die 1 is in the shape of a rectangular plate. An installation plate 53 is arranged above the upper die 1. The area of the installation plate 53 is larger than that of the upper die 1, and through holes are provided at its four corners. The upper die 1 is fixedly connected to the lower side of the installation plate 53. Four guide posts 52 are vertically placed on both sides of the carrier 3 and inserted into the through holes of the installation plate 53, so that the upper die 1 is slidably connected to the guide posts 52 through the installation plate 53. The driving end of the second motor 51 is connected to the top surface of the installation plate 53, and the second motor 51 drives the upper die 1 to reciprocate vertically along the guide posts 52, thereby pressing the upper die 1 on the lower sub-die 21 and lifting the upper die 1.

[0046] A support platform 10 is arranged below the carrier 3, and the carrier 3 is arranged on the support platform 10. Slide holes are arranged on both sides of the carrier 3 and along the length direction of the carrier 3. A lead screw 42 is arranged below the slide holes. Two of the four guide posts 52 are arranged in the slide holes on one side, and the other two are arranged in the slide holes on the other side. The two guide posts 52 on both sides move along the slide holes respectively. Connecting pieces are provided at the bottoms of the four guide posts 52. The connecting pieces are provided with internal threads to be threadedly connected to the lead screw 42. When the first motor 41 operates, the first motor 41 drives the lead screw 42 to rotate, thereby pulling the guide posts 52 to move along the slide holes, and further driving the upper die 1 to translate in the length direction of the lower die 2.

[0047] Further, in this embodiment, a plurality of load-bearing blocks 9 are arranged below the carrier 3. The number of the load-bearing blocks 9 corresponds to the number of the sub-dies 21 and are respectively located below the sub-dies 21.

[0048] In this embodiment, the load-bearing blocks 9 are fixed on the support platform 10. Their upper surfaces are in contact with the lower surface of the carrier 3, and each load-bearing block 9 is arranged directly below its corresponding sub-die 21. Thus, during each punching, the load-bearing blocks 9 can provide a supporting force for the sub-dies 21, thereby offsetting the impact force of the upper die 1 and reducing the deformation of the sub-dies 21.

[0049] Further, it further includes a fourth driving mechanism and a guide rail 8. The guide rail 8 extends in the front-back direction (as shown by the z direction in Figure 2 ). A slider is also arranged below the carrier 3. The slider is slidably connected to the guide rail 8. The fourth driving mechanism is connected to one side of the carrier 3 and is used to drive the carrier 3 to reciprocate in the front-back direction. The front-back direction is a direction perpendicular to the length direction and the vertical direction of the lower die 2.

[0050] Thus, when installing the flexible circuit board onto the lower die 2 or removing the flexible circuit board from the lower die 2, the fourth driving mechanism drives the carrier 3 to move forward (in the direction of the staff) by a certain distance, so that the carrier 3 blocks the guide posts 52. At this time, it can prevent the upper die 1 from moving and causing injury to the staff.

[0051] Specifically, there are multiple guide rails 8, which are respectively arranged on both sides of the load-bearing block 9. The multiple guide rails 8 all extend in the front-back direction and are arranged between the support platform 10 and the carrier 3. A slider is provided at a position below the carrier 3 corresponding to the guide rail 8, and the slider is slidably connected to the guide rail 8. When installing or removing the flexible circuit board, the first driving mechanism 4 moves the upper die 1 to one side, and the fourth driving mechanism drives the carrier 3 to move forward a certain distance so that the carrier 3 blocks the movement of the guide post 52; and after the operation is completed, the fourth driving mechanism drives the carrier 3 to return backward to the original position so that the punching operation can be performed.

[0052] Optionally, the fourth driving mechanism is a fourth motor.

[0053] Furthermore, a cushion film mechanism 6 is further included, which is arranged on the upper die 1. The cushion film mechanism 6 includes a film unwinding unit 61 for releasing the cushion film and a film winding unit 62 for recycling the cushion film. The cushion film released by the film unwinding unit 61 passes through the lower surface of the upper die 1 and is then recycled by the film winding unit 62.

[0054] Thus, the cushion film mechanism 6 is arranged on the upper die 1 and moves together with the upper die 1. The cushion film passes through the lower surface of the upper die 1, so that the cushion film is separated between the upper die 1 and the lower die 2, so that when punching, the blade 22 on the lower die 2 can be protected and the service life of the lower die 2 can be improved.

[0055] Specifically, the film unwinding unit 61 includes a release reel for installing the roll-shaped cushion film and a film unwinding motor, and the film winding unit 62 includes a recovery reel for winding the recycled cushion film and a film winding motor. The driving end of the film unwinding motor is connected to one end of the release reel to drive the release reel to rotate so as to release the cushion film. The driving end of the film winding motor is connected to one end of the recovery reel to drive the recovery reel to rotate so as to recycle the cushion film. The release reel and the recovery reel rotate synchronously, so that the cushion film under the upper die 1 can be replaced after one punching operation, thereby preventing the cushion film from being cut through and protecting the blade 22.

[0056] Optionally, the cushion film is a PET film, which is relatively strong and tough.

[0057] Furthermore, a third driving mechanism is further included, which is connected to the cushion film mechanism 6 and is used to drive the cushion film mechanism 6 to reciprocate a predetermined distance in the front-back direction. Optionally, the predetermined distance is 0.1 mm to 20 mm. More optionally, the third driving mechanism is a third motor.

[0058] Thus, it is possible to prevent the cushion film from being penetrated by punching twice at the same position, and the blade 22 can be better protected.

[0059] Working principle: During use, the fourth driving mechanism drives the carrier table 3 to move forward a certain distance. After placing the flexible circuit board on the lower die 2, the fourth driving mechanism drives the carrier table 3 to move backward to return to the original position. The first motor 41 operates to drive the lead screw 42 to rotate, thereby driving the upper die 1 to move leftward above the first sub-die 21. After the upper die 1 is located above the first sub-die 21, the second motor 51 drives the upper die 1 to move downward onto the sub-die 21 and apply a certain pressure downward, thereby completing the first punching of the flexible circuit board. After the punching is completed, the upper die 1 moves upward to the original position. Next, the first motor 41 continues to operate, thereby driving the upper die 1 to continue moving leftward above the second sub-die 21 to complete the second punching. And so on, the upper die 1 gradually moves along the length direction of the lower die 2, thereby completing the punching of the entire flexible circuit board.

[0060] The flexible circuit board punching device provided by the present utility model can punch flexible circuit boards of different sizes into shape at one time, saving equipment costs, improving production efficiency, and ensuring product quality. In addition, the lower die is composed of multiple sub-dies, which is convenient for installation and maintenance.

[0061] The above embodiments only illustratively explain the principles and effects of the present utility model, rather than limiting the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field under the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A flexible circuit board punching device, characterized in that: include: An upper mold and a lower cutting mold, wherein the upper mold is arranged above the lower cutting mold, and the lower cutting mold comprises a plurality of sub-molds, and the plurality of sub-molds are arranged side by side along the length direction of the lower cutting mold; A carrier, the lower cutting die is arranged on the carrier, and the carrier is provided with limiting edges around it for limiting the movement of the lower cutting die; The first driving mechanism and the second driving mechanism are both connected to the upper mold, the first driving mechanism is used to drive the upper mold to reciprocate along the length direction of the lower cutting mold, and the second driving mechanism is used to drive the upper mold to reciprocate in the vertical direction.

2. The flexible circuit board punching device according to claim 1, characterized in that: The lower surface of the upper mold is a flat plate, and the upper surface of each sub-mold of the lower cutting mold is provided with a plurality of cutting edges.

3. The flexible circuit board punching device according to claim 1 or 2, characterized in that: The length of each sub-mold is less than or equal to the length of the upper mold.

4. The flexible circuit board punching device according to claim 3, characterized in that: The length of each sub-mold is the same and equal to the length of the upper mold.

5. The flexible circuit board punching device according to claim 2, characterized in that: When two adjacent blades are arranged side by side, the outer edges of the two blades facing each other are arc-shaped.

6. The flexible circuit board punching device according to claim 1, characterized in that: It also includes a cushion film mechanism, which is arranged on the upper mold, and the cushion film mechanism includes a unwinding unit for releasing the cushion film and a rewinding unit for recovering the cushion film, wherein the cushion film released by the unwinding unit is recovered by the rewinding unit after passing through the lower surface of the upper mold.

7. The flexible circuit board punching device according to claim 6, characterized in that: It also includes a third driving mechanism, which is connected to the cushioning film mechanism and is used to drive the cushioning film mechanism to reciprocate a predetermined distance in the front-to-back direction, and the front-to-back direction is perpendicular to the length direction of the lower cutting die and the vertical direction.

8. The flexible circuit board punching device according to claim 7, characterized in that: The predetermined distance is 0.1 mm to 20 mm.

9. The flexible circuit board punching device according to claim 7, characterized in that: It also includes a fourth driving mechanism and a guide rail, which is extended along the front-to-back direction. A slider is also provided under the platform, and the slider is slidably connected to the guide rail. The fourth driving mechanism is connected to one side of the platform and is used to drive the platform to reciprocate in the front-to-back direction.

10. The flexible circuit board punching device according to claim 1, characterized in that: A plurality of load-bearing blocks are disposed below the carrier, the number of the load-bearing blocks corresponds to the number of the sub-moulds and are respectively located below the sub-moulds.

11. The flexible circuit board punching device according to claim 1, characterized in that: The first driving mechanism includes a first motor, a screw and a first connecting member, the output end of the first motor is connected to one end of the screw, the screw is extended along the length direction of the lower cutting die and is located below the carrier, and the first connecting member connects the upper die and the screw.

12. The flexible circuit board punching device according to claim 11, characterized in that: The second driving mechanism includes a second motor and four guide pillars. The driving end of the second motor is connected to the upper mold. The four corners of the upper mold are slidably connected to the four guide pillars respectively. The lower ends of the four guide pillars are connected to the screw rod. The second motor drives the upper mold to reciprocate along the four guide pillars in the vertical direction.

Images