Automatic die adjusting mechanism for a punch press

Abstract

The application provides an automatic die adjusting mechanism for a punching machine, and relates to the technical field of PCB processing. The automatic die adjusting mechanism comprises an upper die sliding seat, a plurality of positioning holes are arranged on the upper die sliding seat, a punching pin seat is slidably connected in the upper die sliding seat, a punching pin body is arranged on the punching pin seat, a cavity is arranged in the punching pin seat, a positioning pin is slidably connected in the cavity, a pin head is connected to one side of the positioning pin facing the positioning hole, a spring cavity is arranged on the side of the positioning pin away from the pin head, a return spring is arranged between the spring cavity and the cavity, a gas port communicating with the cavity is arranged on the side of the punching pin seat, and a driving piece is arranged between the punching pin seat and the upper die sliding seat. The application can inject gas pressure into the cavity through the gas port, and the pin head is controlled to move through the cooperation of the gas pressure and the return spring. The automatic separation or connection of the upper and lower pin heads and the positioning holes is realized, the driving piece can drive the punching pin seat to move, the automatic adjustment of the position of the punching pin seat is realized, and the automatic adjustment of the position of the upper and lower punching pin bodies is realized.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing technology, and more specifically, to an automatic mold adjustment mechanism for a punching machine. Background Technology

[0002] In the PCB (Printed Circuit Board) manufacturing industry, after the inner layer etching board of the PCB is completed, an OPE punching machine is needed to process the positioning pin holes or rivet holes. During this process, the die adjustment step of the punching machine is crucial to ensure the accuracy of the punching position.

[0003] Traditional mold adjustment methods rely primarily on manual operation. The steps include: pulling the handle to disengage the locating pin from the locating hole, then pushing the punch seat to the desired machining size, and finally releasing the handle to allow the locating pin to re-insert into the locating hole under spring pressure. However, this manual method has a significant drawback: it requires manual adjustment of the plate size, which is time-consuming. Therefore, we propose an improved automatic mold adjustment mechanism for punching machines. Utility Model Content

[0004] This utility model provides an automatic die adjustment mechanism for a punching machine, including an upper die slide. The upper die slide has several positioning holes. A punch seat is slidably connected inside the upper die slide. The punch seat has a punch body and a cavity. A positioning pin is slidably connected inside the cavity. A pin head is connected to the side of the positioning pin facing the positioning hole. A spring cavity is provided on the side of the positioning pin away from the pin head. A return spring is installed between the spring cavity and the cavity. An air port communicating with the cavity is provided on the side of the punch seat. A driving component is provided between the punch seat and the upper die slide.

[0005] As a preferred technical solution of this application, a sealing ring is fitted on the outer surface of the pin head, and the sealing ring is installed in the cavity. The connection between the air port and the cavity is located between the positioning pin and the sealing ring.

[0006] As a preferred technical solution of this application, the side of the punch seat near the air port is provided with a sliding groove that communicates with the chamber, and a handle is slidably connected in the sliding groove, with one end of the handle connected to a positioning pin.

[0007] As a preferred technical solution of this application, a baffle is installed on the side of the punch seat away from the sealing ring, and the baffle covers the cavity. The two ends of the reset spring abut against the baffle and the inner wall of the spring cavity, respectively.

[0008] As a preferred technical solution of this application, the air port is used to connect to a control valve via a pipeline.

[0009] As a preferred technical solution of this application, a detection sensor is installed on the side of the punch holder, and the detection sensor is used to detect the position of the punch holder.

[0010] As a preferred technical solution of this application, the upper mold slide includes a slide body, a positioning hole is opened on the upper mold slide, and support plates are installed on both sides of the bottom of the upper mold slide. The punch seat is slidably connected between the two support plates.

[0011] As a preferred technical solution of this application, a limiting plate is installed at the bottom of both support plates, and a limiting groove is provided on both sides of the punch seat, with the inner wall of the limiting groove inserted into the limiting plate.

[0012] As a preferred technical solution of this application, one of the limiting plates has a scale at its bottom, and a prism is provided on the side of the punch seat near the scale.

[0013] As a preferred technical solution of this application, the driving component includes a mounting base installed at the bottom of another limiting plate. The mounting base has a positioning hole installed on its side. A lead screw is rotatably connected to the middle of the mounting base through a bearing. One end of the lead screw is connected to a drive motor through a coupling. A transmission seat is threadedly connected to the surface of the lead screw, and the transmission seat is connected to the side of the punch seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] This application allows air pressure to be injected into the chamber through the air port. The movement of the pin head is controlled by the air pressure and the return spring. The upper and lower pin heads are automatically separated or connected to the positioning holes. The driving component can drive the punch seat to move, so as to realize the automatic adjustment of the position of the punch seat, and thus the automatic adjustment of the position of the upper and lower punch bodies, thereby improving the adjustment efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of the automatic die adjustment mechanism for a punching machine provided in this application;

[0018] Figure 2 A bottom view of the automatic die adjustment mechanism for a punching machine provided in this application;

[0019] Figure 3 This is a schematic diagram of the punch holder provided in this application;

[0020] Figure 4 A cross-sectional view of the punch holder provided in this application;

[0021] Figure 5 A schematic diagram of the positioning pin provided in this application.

[0022] The image shows:

[0023] 1. Upper mold slide; 101. Positioning hole; 102. Slide body; 103. Support plate; 104. Limiting plate; 2. Punch seat; 201. Punch body; 202. Limiting groove; 203. Chamber; 204. Slide groove; 205. Positioning pin; 206. Pin head; 207. Spring cavity; 208. Return spring; 209. Air port; 210. Sealing ring; 211. Handle; 212. Baffle; 213. Detection sensor; 214. Prism; 3. Mounting base; 301. Drive motor; 302. Lead screw; 303. Transmission base. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] For an example, please refer to... Figures 1-5 An automatic die adjustment mechanism for a punching machine includes an upper die slide 1 with a plurality of positioning holes 101. A punch seat 2 is slidably connected inside the upper die slide 1, and a punch body 201 is provided on the punch seat 2. A chamber 203 is provided inside the punch seat 2, and a positioning pin 205 is slidably connected inside the chamber 203. A pin head 206 is connected to the side of the positioning pin 205 facing the positioning holes 101. A spring cavity 207 is provided on the side of the positioning pin 205 away from the pin head 206, and a return spring is installed between the spring cavity 207 and the chamber 203. 208. The side of the punch seat 2 is provided with an air port 209 that communicates with the cavity 203. A driving component is provided between the punch seat 2 and the upper mold slide 1. Air pressure can be injected into the cavity 203 through the air port 209. The movement of the pin head 206 is controlled by the air pressure and the return spring 208. The pin head 206 is automatically separated or connected with the positioning hole 101. The driving component can drive the punch seat 2 to move, so as to realize the automatic adjustment of the position of the punch seat 2, and thus the automatic adjustment of the position of the upper and lower punch body 201, improving the adjustment efficiency.

[0028] Furthermore, a sealing ring 210 is fitted on the outer surface of the pin 206, and the sealing ring 210 is installed in the chamber 203. The air port 209 and the chamber 203 are connected between the positioning pin 205 and the sealing ring 210. The sealing ring 210 is used to improve the sealing between the pin 206 and the chamber 203, so that the air pressure can push the positioning pin 205 to move, so that the positioning pin 205 can drive the pin 206 to separate from the positioning hole 101.

[0029] Furthermore, the punch seat 2 has a groove 204 on the side near the air port 209 that communicates with the chamber 203. A handle 211 is slidably connected in the groove 204, and one end of the handle 211 is connected to the positioning pin 205. The handle 211 allows the user to still adjust the position by manually moving the positioning pin 205. In other words, in addition to automatic adjustment, this application also retains the manual adjustment method to deal with emergencies. That is, by manually holding the handle 211 and pushing it, the positioning pin 205 can be moved.

[0030] Furthermore, a baffle 212 is installed on the side of the punch seat 2 away from the sealing ring 210, and the baffle 212 covers the chamber 203. The two ends of the return spring 208 abut against the baffle 212 and the inner wall of the spring cavity 207, respectively.

[0031] Furthermore, the air port 209 is used to connect to a control valve via a pipeline. The control valve is used to control the inlet and outlet of air pressure. The control valve can be a three-way solenoid valve. Two of the three-way solenoid valve's channels are connected to 209 and the high-pressure air source, respectively, while the other channel is used for exhaust. Specifically, when 209 is connected to the high-pressure air source, the chamber 203 is filled with air, and when 209 is connected to the exhaust channel, the air pressure in the chamber 203 is released.

[0032] Furthermore, a detection sensor 213 is installed on the side of the punch holder 2. The detection sensor 213 is used to detect the position of the punch holder 2. The detection sensor 213 is a displacement sensor. A PLC controller is connected between the detection sensor 213, the air pressure sensor and the drive motor 301. Automated control is realized through the existing PLC control system. The control principle of the PLC controller and the related circuit connections are all existing technologies and will not be described in detail in this application.

[0033] Furthermore, the upper mold slide 1 includes a slide body 102, a positioning hole 101 is formed on the upper mold slide 1, and support plates 103 are installed on both sides of the bottom of the upper mold slide 1, and the punch seat 2 is slidably connected between the two support plates 103.

[0034] Furthermore, limit plates 104 are installed at the bottom of both support plates 103, and limit grooves 202 are provided on both sides of the punch seat 2. The inner wall of the limit groove 202 is inserted into the limit plate 104. The insertion of the limit plate 104 into the limit groove 202 can limit the punch seat 2, thereby improving the stability of the punch seat 2 when it moves.

[0035] Furthermore, one of the limiting plates 104 has a scale at its bottom, and a prism 214 is provided on the side of the punch seat 2 near the scale. The scale is designed to facilitate observation of the position of the punch seat 2, and the prism 214 can refract the scale. Originally, the staff had to look up to see the scale, but the refraction of the prism 214 allows the staff to view the prism 214 from the side to see the scale, thus making it easier to observe.

[0036] Furthermore, the driving component includes a mounting base 3 installed at the bottom of another limiting plate 104. The mounting base 3 has a positioning hole 101 installed on its side. A lead screw 302 is rotatably connected to the middle of the mounting base 3 via a bearing. One end of the lead screw 302 is connected to a drive motor 301 via a coupling. A transmission seat 303 is threadedly connected to the surface of the lead screw 302, and the transmission seat 303 is connected to the side of the punch seat 2. The drive motor 301 can drive the transmission seat 303 to move horizontally through the lead screw 302, thereby driving the punch seat 2 to move horizontally.

[0037] The slide body 102, support plate 103, and limiting plate 104 are connected by bolts. The mounting base 3 is connected to the limiting plate 104 and the drive motor 301 by bolts. The transmission base 303 is connected to the punch base 2 by bolts. The baffle 212 is connected to the punch base 2 by bolts. The positioning pin 205 is provided with a screw hole. The handle 211 is provided with a thread at one end near the positioning pin 205. That is, the handle 211 is threaded to the positioning pin 205 through the screw hole. The detection sensor 213 is installed on the side of the punch base 2 by bolts.

[0038] The drive motor 301 is a motor without a self-locking function, which allows the lead screw 302 to be turned by hand to manually adjust the position of the punch seat 2 in an emergency.

[0039] In use, the detection sensor 213 is a displacement sensor, and its signal output terminal is connected to the input terminal of the PLC controller; the control terminal of the control valve is connected to the output terminal of the PLC controller. When it is necessary to adjust the position of the punch seat 2, the PLC controller first sends a signal to the control valve, and introduces air pressure into the chamber 203 through the air port 209, which pushes the positioning pin 205 to drive the pin head 206 to disengage from the positioning hole 101; then the drive motor 301 starts, and drives the transmission seat 303 to move through the lead screw 302, which drives the punch seat 2 to slide; when the detection sensor 213 detects that the punch seat 2 has reached the target position, the PLC controller sends a signal to close the control valve, the air pressure in the chamber 203 is released, the reset spring 208 pushes the positioning pin 205 to reset, and the pin head 206 is reinserted into the corresponding positioning hole 101, completing the automatic mold adjustment.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An automatic die adjustment mechanism for a punching machine, characterized in that, The device includes an upper mold slide (1), which has several positioning holes (101). A punch seat (2) is slidably connected inside the upper mold slide (1). A punch body (201) is provided on the punch seat (2). A chamber (203) is provided inside the punch seat (2). A positioning pin (205) is slidably connected inside the chamber (203). A pin head (206) is connected to the side of the positioning pin (205) facing the positioning hole (101). A spring cavity (207) is provided on the side of the positioning pin (205) away from the pin head (206). A return spring (208) is installed between the spring cavity (207) and the chamber (203). An air port (209) communicating with the chamber (203) is provided on the side of the punch seat (2). A driving component is provided between the punch seat (2) and the upper mold slide (1).

2. The automatic die-adjusting mechanism for a punching machine according to claim 1, characterized in that, The outer surface of the pin (206) is fitted with a sealing ring (210), and the sealing ring (210) is installed in the chamber (203). The connection between the air port (209) and the chamber (203) is located between the positioning pin (205) and the sealing ring (210).

3. The automatic die-adjusting mechanism for a punching machine according to claim 1, characterized in that, The punch seat (2) has a groove (204) on the side near the air port (209) that communicates with the chamber (203). A handle (211) is slidably connected in the groove (204), and one end of the handle (211) is connected to the positioning pin (205).

4. The automatic die-adjusting mechanism for a punching machine according to claim 3, characterized in that, A baffle (212) is installed on the side of the punch seat (2) away from the sealing ring (210), and the baffle (212) covers the chamber (203). The two ends of the reset spring (208) abut against the baffle (212) and the inner wall of the spring cavity (207), respectively.

5. The automatic die-adjusting mechanism for a punching machine according to claim 1, characterized in that, The air port (209) is used to connect to the control valve via a pipeline.

6. The automatic die-adjusting mechanism for a punching machine according to claim 1, characterized in that, A detection sensor (213) is installed on the side of the punch holder (2), and the detection sensor (213) is used to detect the position of the punch holder (2).

7. The automatic die-adjusting mechanism for a punching machine according to claim 1, characterized in that, The upper mold slide (1) includes a slide body (102), a positioning hole (101) is opened on the upper mold slide (1), and support plates (103) are installed on both sides of the bottom of the upper mold slide (1). The punch seat (2) is slidably connected between the two support plates (103).

8. The automatic die-adjusting mechanism for a punching machine according to claim 7, characterized in that, Limiting plates (104) are installed at the bottom of both support plates (103), and limiting grooves (202) are provided on both sides of the punch seat (2), and the inner wall of the limiting groove (202) is inserted into the limiting plate (104).

9. The automatic die-adjusting mechanism for a punching machine according to claim 8, characterized in that, One of the limiting plates (104) has a scale at the bottom, and the punch seat (2) has a prism (214) on the side near the scale.

10. The automatic die-adjusting mechanism for a punching machine according to claim 9, characterized in that, The driving component includes a mounting base (3) installed at the bottom of another limiting plate (104). The mounting base (3) has a positioning hole (101) on its side. A lead screw (302) is rotatably connected to the middle of the mounting base (3) via a bearing. One end of the lead screw (302) is connected to a drive motor (301) via a coupling. A transmission seat (303) is threadedly connected to the surface of the lead screw (302), and the transmission seat (303) is connected to the side of the punch seat (2).

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