Circuit board punching machine

Abstract

The utility model discloses a circuit board punching machine which comprises a machine frame, a punching driving mechanism, a punching platform and a translation module, the punching driving mechanism is connected with an upper die, a lower die matched with the upper die is arranged on the punching platform, and the lower die comprises a lower die base and a cutting die arranged on the lower die base; wherein a sliding rail is arranged on the punching platform, a sliding block is arranged on the sliding rail, the lower die is arranged on the sliding block and can float up and down relative to the sliding block, and a buffer spring is arranged between the sliding block and the lower die base; the multiple bearing platforms are fixedly arranged on the punching platform and located under the upper die. The translation module is provided with a lead screw transmission mechanism arranged between the bearing platforms, a nut sliding block of the lead screw transmission mechanism is provided with a transmission pin protruding upwards, and the lower die base is provided with a connecting hole allowing the transmission pin to be inserted and forming sliding fit. The circuit board punching machine provided by the utility model is particularly suitable for punching and processing a strip-shaped flexible circuit board, and has the advantage of high processing precision.

Description

Technical Field

[0001] The utility model relates to a punching machine for punching a flexible circuit board. Background Art

[0002] In the prior art, the punching, shape making and other processes involved in the production of various circuit boards including flexible circuit boards are basically achieved by punching machines.

[0003] For example, Chinese patent application CN201720325717.2 discloses a vertical servo punch press, including a frame, on which are arranged upper and lower mold groups, a single carrying mechanism and a discharge table, the upper mold group can be raised and lowered relative to the frame and a punching head for punching workpieces is arranged at its lower end, the lower mold group can slide horizontally along the frame and can slide to the bottom of the upper mold group, the single carrying mechanism includes a mechanism bracket that can slide horizontally along the frame, a suction cup group that is arranged on the mechanism bracket and can move up and down relative to the mechanism bracket, and the suction cup group is connected to a vacuum pump to adsorb the workpiece on the lower mold group.

[0004] However, when punching the long flexible circuit board, a large punching force is required. If the traditional punching machine is still used under such application conditions, the flexible circuit board is prone to local warping, deformation and other defects at the moment of punching, which affects the punching accuracy and yield rate. Therefore, it is necessary to improve the existing circuit board punching machine. Utility Model Content

[0005] In view of the deficiencies in the prior art, the main purpose of the utility model is to provide a circuit board punching machine for punching flexible circuit boards, so as to improve the punching accuracy and yield rate of long strip flexible circuit boards.

[0006] In order to achieve the above main purpose, the utility model discloses a circuit board punching machine, which is used for punching and cutting of flexible circuit boards; the circuit board punching machine comprises a frame, a punching and cutting drive mechanism and a punching and cutting platform, the punching and cutting drive mechanism is connected to an upper die, a lower die matching with the upper die is arranged on the punching and cutting platform, the lower die comprises a lower die seat and a cutting die arranged on the lower die seat; wherein:

[0007] The punching platform is provided with at least two slide rails extending in the front-rear direction, the slide rails are provided with sliders, the lower die is arranged on the sliders and can float up and down relative to the sliders, and a support spring for buffering is provided between the sliders and the lower die seat;

[0008] A plurality of bearing platforms are fixedly arranged on the punching platform along the left-right direction and are located directly below the upper die, and are used to support the lower die during the punching process;

[0009] A translation module group, used for driving the lower die to move along the slide rail between a punching position located above the carrying platform and a loading and unloading position located in front of the carrying platform;

[0010] The translation module has a screw transmission mechanism arranged between the bearing platforms, a nut slider of the screw transmission mechanism is provided with an upwardly protruding transmission pin, and the lower die base is provided with a connecting hole for the transmission pin to be inserted and form a sliding fit.

[0011] According to a specific implementation of the utility model, the number of the bearing platforms is two, and the screw transmission mechanism is arranged between the two bearing platforms.

[0012] According to a specific embodiment of the utility model, a supporting plate for supporting the end of the flexible circuit board is provided on both the left and right sides of the lower mold, and the supporting plate includes a horizontal supporting portion and a vertical supporting portion extending downward, and an arc-shaped transition is formed between the horizontal supporting portion and the vertical supporting portion.

[0013] Furthermore, the support plate is provided with ribs on both the front and rear sides.

[0014] According to a specific embodiment of the utility model, the frame and the punching platform form a C-shaped structure with an opening toward the front side as a whole, wherein the punching platform can protrude forward from the frame to facilitate loading and unloading operations of the flexible circuit board.

[0015] Furthermore, protective partitions are provided on the left and right sides of the punching platform.

[0016] According to a specific embodiment of the utility model, the frame includes a mounting plate arranged above it, the punching drive mechanism is arranged on the mounting plate, and a lifting guide mechanism is provided between the upper die seat of the upper die and the mounting plate.

[0017] According to a specific embodiment of the utility model, the punching drive mechanism includes a lifting motor, a reducer and a screw lifting mechanism, the lifting motor drives the screw lifting mechanism through the reducer, and the upper die seat of the upper die is connected to the screw lifting mechanism.

[0018] According to a specific implementation of the utility model, the translation module further includes a translation motor and a belt transmission mechanism connecting the translation motor and the screw transmission mechanism, and the translation motor is arranged at the rear of the bearing platform.

[0019] The technical solution of the utility model has the following beneficial effects:

[0020] In the utility model, on the one hand, the lower die is elastically supported by the support springs. When the upper die contacts the punching of the flexible circuit board, the support springs can play a buffering role to reduce defects such as warping and deformation of the flexible circuit board, thereby improving the punching accuracy and yield rate of the flexible circuit board. On the other hand, during the punching process, as the support springs are compressed, the lower die will be rigidly supported by multiple bearing platforms and maintain force balance to complete the final punching operation.

[0021] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an overall structural diagram of an embodiment of a circuit board punching machine of the utility model;

[0023] Figure 2 is a three-dimensional structural diagram of the main part of the circuit board punching machine in the embodiment;

[0024] Figure 3 is a three-dimensional structural diagram of the punching platform part in the embodiment;

[0025] Figure 4 is a structural diagram of the translation module and the lower mold in the embodiment;

[0026] Figure 5 is a structural diagram of the translation module in the embodiment. DETAILED DESCRIPTION

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1 to 4 As shown, the circuit board punching machine of the embodiment includes an outer box 10, a frame 20, a punching drive mechanism 30 and a punching platform 40, wherein the punching drive mechanism 30 is mounted on the frame 20 and is located above the punching platform 40. The frame 20 and the punching platform 40 form a C-shaped structure with an opening toward the front side as a whole, and the front side opening can be used as an operation area for loading and unloading flexible circuit boards. The punching platform 40 preferably protrudes forward from the frame 20 to facilitate loading and unloading operations of the flexible circuit boards.

[0029] Specifically, the frame 20 includes two supporting side plates 21 and a mounting plate 22, the mounting plate 22 is arranged above the frame 20 and connected to the supporting side plates 21, and the punching drive mechanism 30 is arranged on the mounting plate 22. The punching drive mechanism 30 is connected to an upper die 51, and a lower die 52 cooperating with the upper die 51 is arranged on the punching platform 40; when working, the upper die 51 can be driven by the punching drive mechanism 30 to move up and down, and cooperate with the lower die 52 to complete the punching process of the flexible circuit board.

[0030] In the embodiment, the punching drive mechanism 30 includes a lifting motor 31, a reducer 32 and a screw lifting mechanism 33. The lifting motor 31 drives the screw lifting mechanism 33 through the reducer 32. The screw lifting mechanism 33 is connected to the upper die seat 511 of the upper die 51. A lifting guide mechanism, such as a guide column and guide sleeve mechanism 34, is provided between the upper die seat 511 and the mounting plate 22 to ensure the lifting stability of the upper die 51.

[0031] At least two slide rails 41 extending in the front-to-back direction are provided on the punching platform 40, and a slider 42 is provided on the slide rails 41. The lower die 52 is provided on the slider 42, and a floating guide mechanism and a support spring for buffering (not visible in the figure) are provided between the slider 42 and the lower die 52, so that the lower die 52 can float up and down a certain height relative to the slider 42. Specifically, the lower die 52 includes a lower die seat 521 and a knife die 522 provided on the lower die seat 521, and the support spring for buffering is provided between the slider 42 and the lower die seat 521. The support spring can be sleeved on the guide pin of the floating guide mechanism, and the guide pin can be provided on one of the slider 42 and the lower die seat 521, and a guide hole cooperating with the guide pin is provided on the other of the slider 42 and the lower die seat 521. Through the cooperation of the guide pin and the guide hole, the stability of the lower die 52 in the floating process can be improved.

[0032] Furthermore, a plurality of bearing platforms 43 are fixedly arranged on the punching platform 40, and the bearing platforms 43 are used to rigidly support the lower die 52 during the punching process, specifically, they are in contact with the lower die seat 521 to support the lower die 52. The plurality of bearing platforms 43 are arranged in the left-right direction and are located directly below the upper die 51. Preferably, there are two bearing platforms 43, and both are arranged between the two slide rails 41.

[0033] In the embodiment, the lower die 52 is elastically supported by a support spring. When the upper die 51 contacts the punching of the flexible circuit board, the support spring can play a buffering role to reduce defects such as warping and deformation of the flexible circuit board. During the punching process, the flexible circuit board 100 is placed on the knife die 522 of the lower die 52. As the upper die 51 applies the punching force to the lower die 52, the lower die 52 will eventually overcome the elastic force of the support spring and move downward to be supported by the supporting platform 43 to complete the final punching operation. The multiple supporting platforms 43 ensure the overall force balance of the lower die 52. As a result, the punching accuracy and yield rate of the flexible circuit board are improved. This advantage is particularly significant in the punching process of long strip flexible circuit boards (for example, with a length of 2 meters or more).

[0034] Furthermore, if Figure 4 As shown, the left and right sides of the lower mold 52 are provided with supporting plates 523 for supporting the ends of the flexible circuit board. The supporting plate 523 includes a horizontal supporting portion 5231 and a vertical supporting portion 5232 extending downward. An arc transition is formed between the horizontal supporting portion 5231 and the vertical supporting portion 5232 to avoid scratches on the flexible circuit board. In addition, the ends of the flexible circuit board that do not need to be punched can droop along the vertical supporting portion 5232 to reduce the area occupied by the equipment. Preferably, the front and rear sides of the supporting plate 523 can also be provided with retaining edges 5233 to assist in the front and rear positioning of the flexible circuit board.

[0035] The translation module 60 is used to drive the lower die 52 to move forward and backward along the slide rail 41. Specifically, the lower die 52 can move forward and backward between the punching position and the loading and unloading position. Figure 2 As shown in the position, the lower mold 52 is located at the front side of the carrying platform 43, so as to facilitate the loading and unloading operations of the flexible circuit board; in the punching position, the lower mold 52 is located above the carrying platform 43 and is opposite to the upper mold 51. After the upper mold 51 moves downward, it cooperates with the lower mold 52 to perform the punching process.

[0036] In the embodiment, Figure 5 As shown, the translation module 60 has a screw transmission mechanism 61 disposed between two bearing platforms 43, a nut slider 611 of the screw transmission mechanism 61 is provided with a transmission pin 612 protruding upward, and a connection hole 5211 is provided on the lower die seat 521 for the transmission pin 612 to be inserted and form a sliding fit. Since the transmission pin 612 and the connection hole 5211 form a sliding fit in the up and down directions, in the initial stage of the punching process (the process in which the lower die 52 overcomes the force of the supporting spring and descends to be supported by the bearing platform 43), the lower die 52 will not interfere with the nut slider 611 when moving downward; in the non-punching process state, the lower die 52 is reset upward under the action of the supporting spring, at which time the transmission pin 612 still remains inserted into the connection hole 5211, and the lower die 52 can move forward and backward with the nut slider 611.

[0037] Furthermore, the translation module 60 further includes a translation motor 62 and a belt transmission mechanism 63 connecting the translation motor 62 and the screw transmission mechanism 61. The translation motor 62 can be arranged behind the carrying platform 43. As a variation of the embodiment, the screw transmission mechanism 61 can also be arranged to be connected to the power output shaft of the translation motor 62 through a coupling.

[0038] Please continue reading Figure 1 As shown, both sides of the punching platform 40 may be provided with protective baffles 11, which may be connected to the outer box body 10. The protective baffles 11 may be fixedly connected to the outer box body 10, or may be slidably connected or rotatably connected to the outer box body 10. For example, the protective baffles 11 may be configured to slide forward and backward or flip up and down to facilitate the replacement of the upper and lower molds.

[0039] Although the present invention is described above through embodiments, it should be understood that any equivalent changes made by ordinary technicians in this field without departing from the scope of the present invention should be covered by the protection scope of the present invention.

Claims

1. A circuit board punching machine for punching flexible circuit boards; the circuit board punching machine comprises a frame, a punching drive mechanism and a punching platform, the punching drive mechanism is connected to an upper die, a lower die matching the upper die is arranged on the punching platform, the lower die comprises a lower die seat and a cutting die arranged on the lower die seat; the characteristics are: The punching platform is provided with at least two slide rails extending in the front-rear direction, the slide rails are provided with sliders, the lower die is arranged on the sliders and can float up and down relative to the sliders, and a support spring for buffering is provided between the sliders and the lower die seat; A plurality of bearing platforms are fixedly arranged on the punching platform along the left-right direction and are located directly below the upper die, and are used to support the lower die during the punching process; A translation module group, used for driving the lower die to move along the slide rail between a punching position located above the carrying platform and a loading and unloading position located in front of the carrying platform; The translation module has a screw transmission mechanism arranged between the bearing platforms, a nut slider of the screw transmission mechanism is provided with an upwardly protruding transmission pin, and the lower die base is provided with a connecting hole for the transmission pin to be inserted and form a sliding fit.

2. The circuit board punching machine according to claim 1, characterized in that: The number of the bearing platforms is two, and the screw transmission mechanism is arranged between the two bearing platforms.

3. The circuit board punching machine according to claim 1, characterized in that: The left and right sides of the lower mold are both provided with supporting plates for supporting the ends of the flexible circuit board. The supporting plates include a horizontal supporting portion and a vertical supporting portion extending downward, and an arc-shaped transition is formed between the horizontal supporting portion and the vertical supporting portion.

4. The circuit board punching machine according to claim 3, characterized in that: The front and rear sides of the supporting plate are both provided with retaining edges.

5. The circuit board punching machine according to claim 1, characterized in that: The frame and the punching platform as a whole form a C-shaped structure that is open to the front side.

6. The circuit board punching machine according to claim 5, characterized in that: Protective partitions are provided on both the left and right sides of the punching and shearing platform.

7. The circuit board punching machine according to claim 1, characterized in that: The frame includes a mounting plate arranged above the frame, the punching drive mechanism is arranged on the mounting plate, and a lifting guide mechanism is arranged between the upper die seat of the upper die and the mounting plate.

8. The circuit board punching machine according to claim 1, characterized in that: The punching driving mechanism comprises a lifting motor, a reducer and a screw lifting mechanism. The lifting motor drives the screw lifting mechanism through the reducer, and the upper die seat of the upper die is connected to the screw lifting mechanism.

9. The circuit board punching machine according to claim 1, characterized in that: The translation module also includes a translation motor and a belt transmission mechanism connecting the translation motor and the screw transmission mechanism. The translation motor is arranged at the rear of the bearing platform.

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