A punching mechanism capable of punching different thickness ranges

Abstract

The utility model relates to circuit board punching technology field especially can punch the punching mechanism of different thickness range, this kind of punching mechanism of different thickness range, including upper die and lower die, the upper die includes the upper die seat, sets up the needle selection mechanism in the upper die seat, sets up the punch needle mechanism in the upper die plate, the lower die includes the lower die seat, sets up the lower die plate in the lower die seat, sets up the punch seat in the lower die seat, the punch seat exposes on the lower die plate, the needle selection mechanism includes the drive source, sets up the needle selection head of the drive end of drive source, drive source drives the needle selection head to select at least one punch needle on punch needle mechanism, the upper die and lower die close, and the needle selection head is on the upper die seat and the needle selection head, and the punch needle extends into punch seat. Punching, drive source directly drives the needle selection head to move to the corresponding punch needle position, then closes the mould, and the punch needle is punched to the circuit board on the upper die plate. This kind of punching mechanism not only can punch out the hole of different size, and the structure is simpler, and maintenance debugging is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of circuit board punching technology, and in particular to a punching mechanism that can punch holes of different thicknesses. Background Technology

[0002] The circuit board manufacturing process typically involves a punching process to create mounting holes in the circuit board for soldering other electronic components. Generally, the shrinkage rate after punching varies depending on the thickness of the circuit board; therefore, different punches are required for punching circuit boards of different thicknesses.

[0003] Some punching mechanisms on the market already allow for the selection of different punches for punching. For example, Chinese Patent Application No. CN202220169079.0 discloses a motor-selective punch position mechanism and punching die, including a first drive motor, a synchronous belt, a drive pulley, a driven pulley, and at least one selector head; the output shaft of the first drive motor is connected to the drive pulley; the two ends of the synchronous belt are fitted between the drive pulley and the driven pulley; the selector head is located on the synchronous belt, and the selector head moves on the synchronous belt to select at least one of multiple punches. This design uses a selector head on the synchronous belt to select different punches. Although this design can select different punches, it also has the following problems: 1. The structure of the selector head, involving belts, motors, and other mechanisms, is relatively complex. Also, the belt has a certain degree of flexibility, and long-term operation carries the risk of belt sagging, requiring readjustment and making maintenance inconvenient. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a punching mechanism that can punch holes of different thicknesses. It is not only simple in structure but also easy to maintain, thereby overcoming the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This application provides a punching mechanism capable of punching holes of different thickness ranges, including an upper die and a lower die. The upper die includes an upper die base, a needle selection mechanism disposed on the upper die base, and a punching mechanism disposed on the upper die plate. The lower die includes a lower die base, a lower template disposed on the lower die base, and a punching seat disposed on the lower die base; the punching seat is exposed on the lower template. The needle selection mechanism includes a drive source and a needle selection head disposed at the drive end of the drive source; the drive source drives the needle selection head to select at least one punch on the punch mechanism. The upper and lower dies are closed, and the needle head rests on the upper die seat and the needle head; the punch extends into the punch seat.

[0006] Preferably, the driving source is a cylinder, and the driving source is mounted on the upper mold base via a mounting bracket.

[0007] Preferably, the punch mechanism includes a first connecting rod, a first punch plate, a second punch plate, a punch seat, a return spring, and a punch; the upper end of the first connecting rod is disposed on the upper mold base; the lower end of the first connecting rod is connected to the first punch plate; the second punch plate is disposed on the top of the upper mold plate; the punch seat is disposed on the bottom of the upper mold plate; the punch passes through the first punch plate, the second punch plate, and the punch seat; the return spring is sleeved on the punch and can push the punch to return to its original position.

[0008] Preferably, the lower end of the punch has a needle tip, and the upper end of the punch has an enlarged portion; the second punch plate supports the lower end of the reset spring; the upper end of the reset spring pushes the enlarged portion, and the punch resets upward.

[0009] Preferably, the needle tips of some of the punches are of different sizes, and the punch size on the punching seat is adapted to the size of the needle tip.

[0010] Preferably, the needle end of the punch is provided with a needle seat; the needle selection head has a block-shaped structure; each needle selection head can press on at least one needle seat.

[0011] Preferably, a first guide sleeve is provided on the lower mold base; a first guide post is provided on the upper mold base; the first guide post is inserted into the first guide sleeve; The lower mold base is provided with a second guide post, and the upper mold plate is provided with a second guide sleeve; the second guide post is inserted into the second guide sleeve. The mounting rod on the upper mold base is connected to the upper template and can drive the upper template to move up and down.

[0012] Preferably, the upper template is provided with a first light source and a first detection camera; the lower mold base is provided with a base, the base is provided with a detection hole, and the detection hole is provided with a second light source and a second detection camera.

[0013] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as shown in the above technical solution, during punching, the drive source directly drives the selector head to move to the corresponding punch position, so that the lower end of the selector head abuts against the tail of the punch, while the upper end of the selector head abuts against the upper die base; then the die closes, and the punch punches holes in the circuit board on the upper die plate. Therefore, this punching mechanism can punch holes of different sizes and is more convenient to use. Furthermore, since the selector head is directly located at the output end of the drive source, this structure is simpler and easier to maintain and debug. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 This is an embodiment of the present utility model. Figure 1 Schematic diagram of cross-section A_A.

[0016] Figure 3 This is an embodiment of the present utility model. Figure 1 Schematic diagram of cross-section B_B.

[0017] Figure 4 This is a partial structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 5 This is a bottom view of a partial structural embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached diagram: 10. Upper mold; 110. Upper mold base; 111. First guide post; 112. Needle selection mechanism; 113. Drive source; 114. Needle head; 120. Upper template; 121. First light source; 122. First detection camera; 123. Mounting rod; 124. Second guide sleeve; 130. Punch mechanism; 131. First connecting rod; 132. First punch plate; 133. Second punch plate; 134. Punch base; 135. Return spring; 136. Punch; 137. Needle tip; 138. Enlargement part; 139. Needle seat; 20. Lower mold; 210. First guide sleeve; 211. Lower mold base; 212. Lower template; 213. Punch seat; 214. Punch; 215. Second light source; 216. Second detection camera; 217. Second guide post. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a punching mechanism capable of punching holes of different thicknesses.

[0022] The drive source 113 directly drives the needle selection head 114 to select at least one punch 136 on the punch mechanism 130, making the needle selection structure simpler and the debugging and maintenance more convenient.

[0023] This application provides a punching mechanism capable of punching holes of different thicknesses, including an upper die 10 and a lower die 20. The upper die 10 includes an upper die base 110, a needle selection mechanism 112 disposed on the upper die base 110, and a punch mechanism 130 disposed on an upper template 120. The lower die 20 includes a lower die base 211, a lower template 212 disposed on the lower die base 211, and a punching seat 213 disposed on the lower die base 211. The punching seat 213 is exposed on the lower template 212. The needle selection mechanism 112 includes a drive source 113 and a needle selection head 114 disposed on the drive end of the drive source 113. The drive source 113 drives the needle selection head 114 to select at least one punch 136 on the punch mechanism 130. When the upper die 10 and the lower die 20 are closed, the needle selection head 114 abuts against the upper die base 110 and the needle selection head 114. The punch 136 extends into the punching seat 213. The punching mechanism can be used to punch holes 214 in the circuit board. The drive source 113 can be a cylinder or a lead screw servo module; in this application, the drive source 113 is a cylinder. The drive source 113 is mounted on the upper die base 110 via a mounting base. The drive source 113 directly drives the selector head 114 to move to the corresponding punch 136 position. The lower end of the selector head 114 abuts against the tail end of the punch 136; the upper end of the selector head 114 abuts against the upper die base 110. When the die is closed, the punch 136 corresponding to the selector head 114 can punch holes 214 in the circuit board on the lower die plate 212; punches 136 not abutted by the selector head 114 will not extend. The punch 136 punches through the circuit board and extends into the punch hole 214 on the punching base 213, ensuring that the circuit board is completely punched through. Therefore, since the needle selection head 114 is directly driven by the drive source 113, this structure is simpler and easier to maintain and debug. The drive source 113 is mounted on the upper mold base 110 via a mounting base, and the needle selection head 114 can directly press against the upper mold base 110. Its limiting structure is also very simple, making assembly and debugging convenient, and the overall structure is more compact.

[0024] Preferably, the punch mechanism 130 includes a first connecting rod 131, a first punch plate 132, a second punch plate 133, a punch seat 134, a return spring 135, and a punch 136. The upper end of the first connecting rod 131 is disposed on the upper mold base 110; the lower end of the first connecting rod 131 is connected to the first punch plate 132; the second punch plate 133 is disposed on the top of the upper template 120; the punch seat 134 is disposed on the bottom of the upper template 120; the punch 136 passes through the first punch plate 132, the second punch plate 133, and the punch seat 134; the return spring 135 is sleeved on the punch 136 and can push the punch 136 to return to its original position. The punch 136 passes through the first punch plate 132, the second punch plate 133, and the punch seat 134 and can move up and down. The first punch plate 132, the second punch plate 133, and the punch holder 134 can control the movement trajectory of the punch 136. The punch holder 134 presses against the punching seat 213, and the punch 136 extends into the punching seat 213 to punch a hole 214 in the circuit board. When the mold is closed, the punch 136 moves downward to punch the circuit board 214; when the mold is opened, the punch 136 moves upward under the action of the return spring 135, and the punch 136 returns to its original position.

[0025] Preferably, the lower end of the punch 136 has a tip 137, and the upper end of the punch 136 has an enlarged portion 138. The second punch plate 133 supports the lower end of the return spring 135. The upper end of the return spring 135 pushes the enlarged portion 138, and the punch 136 returns to its original position. The tip 137 of some punches 136 may have different sizes, and the size of the punch 214 on the punch seat 213 is adapted to the size of the tip 137. The size of the tip 137 can be set as needed; it can be the same or different. In this embodiment, there are several drive sources 113, each with a needle selection head 114, each corresponding to one or more punches 136. The enlarged portion 138 is annular. The return spring 135 pushes the punch 136 on the second punch plate 133, and the punch 136 returns to its original position. The entire punch mechanism 130 has a simple overall structure and is very easy to assemble and disassemble.

[0026] Preferably, the tail end of the punch 136 is provided with a needle seat 139; the selector head 114 has a block-shaped structure; each selector head 114 can press on at least one needle seat 139. The needle seat 139 is one of a metal part, an elastic plastic part, or an elastic silicone part. The needle seat 139 can be set by injection molding, bonding, screws, etc. The needle seat 139 can prevent wear on the tail end of the punch 136. The selector head 114 is a block and can be pressed on one or more selector heads 114.

[0027] Preferably, the lower mold base 211 is provided with a first guide sleeve 210; the upper mold base 110 is provided with a first guide post 111; the first guide post 111 is inserted into the first guide sleeve 210; the lower mold base 211 is provided with a second guide post 217; the upper mold plate 120 is provided with a second guide sleeve 124; the second guide post 217 is inserted into the second guide sleeve 124; the mounting rod 123 provided on the upper mold base 110 is connected to the upper mold plate 120 and can drive the upper mold plate 120 to move up and down. The first guide post 111 cooperates with the first guide sleeve 210 to ensure the opening and closing accuracy of the upper mold 10 and the lower mold 20. The second guide post 217 cooperates with the second guide sleeve 124 to ensure the movement accuracy of the upper mold plate 120. The upper mold base 110 can drive the upper mold plate 120 to move up and down through the mounting rod 123. At the same time, when the lower die holder 211 moves downward, the selected punch 136 will extend from the punch holder 134 to punch holes 214 in the circuit board. This structure is simple and ingeniously designed.

[0028] Preferably, the upper template 120 is provided with a first light source 121 and a first detection camera 122; the lower mold base 211 is provided with a base, and the base is provided with a detection hole, in which a second light source 215 and a second detection camera 216 are disposed. The first light source 121, the first detection camera 122, the second light source 215, and the second detection camera 216 can be installed by screws or fasteners. The first detection camera 122 and the second detection camera 216 are CCD cameras. The first detection camera 122 detects the front of the circuit board, and the second detection camera 216 detects the back of the circuit board through the detection hole. Therefore, the first detection camera 122 and the second detection camera 216 work together to accurately detect the front and back of the circuit board, and the quality is guaranteed. The first light source 121 and the second light source 215 are LED light sources.

[0029] In summary, the key design feature of this invention is that its drive source 113 can directly drive the selection head 114 to move to the corresponding punch 136 position. During mold closing, the punch 136 aligns with the circuit board punch 214 on the template 120. Since the selection head 114 is directly located at the output end of the drive source 113, this structure is simpler and easier to maintain and debug.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A punching mechanism capable of punching holes of varying thicknesses, comprising an upper die (10) and a lower die (20); characterized in that: The upper mold (10) includes an upper mold base (110), a needle selection mechanism (112) disposed on the upper mold base (110), and a punch mechanism (130) disposed on the upper mold plate (120). The lower die (20) includes a lower die base (211), a lower template (212) disposed on the lower die base (211), and a punch seat (213) disposed on the lower die base (211); the punch seat (213) is exposed on the lower template (212); The needle selection mechanism (112) includes a drive source (113) and a needle selection head (114) disposed at the drive end of the drive source (113); the drive source (113) drives the needle selection head (114) to select at least one punch (136) on the punch mechanism (130). The upper mold (10) and lower mold (20) are closed, and the selection needle (114) rests on the upper mold base (110) and the selection needle (114); the punch (136) extends into the punching base (213).

2. The punching mechanism capable of punching holes of different thickness ranges according to claim 1, characterized in that: The drive source (113) is a cylinder, and the drive source (113) is mounted on the upper mold base (110) via a mounting seat.

3. The punching mechanism capable of punching holes of different thickness ranges according to claim 1, characterized in that: The punch mechanism (130) includes a first connecting rod (131), a first punch plate (132), a second punch plate (133), a punch seat (134), a return spring (135), and a punch (136). The upper end of the first connecting rod (131) is disposed on the upper mold base (110). The lower end of the first connecting rod (131) is connected to the first punch plate (132). The second punch plate (133) is disposed on the top of the upper template (120). The punch seat (134) is disposed on the bottom of the upper template (120). The punch (136) passes through the first punch plate (132), the second punch plate (133), and the punch seat (134). The return spring (135) is sleeved on the punch (136) and can push the punch (136) to return to its original position.

4. A punching mechanism capable of punching holes of different thickness ranges according to claim 3, characterized in that: The lower end of the punch (136) has a needle tip (137), and the upper end of the punch (136) has an enlarged portion (138); the reset second punch plate (133) supports the lower end of the reset spring (135); the upper end of the reset spring (135) pushes the enlarged portion (138), and the punch (136) resets upward.

5. A punching mechanism capable of punching holes of different thickness ranges according to claim 3, characterized in that: The size of the tip (137) of some of the punches (136) is different, and the size of the punch (214) on the punch seat (213) is adapted to the size of the tip (137).

6. A punching mechanism capable of punching holes of different thickness ranges according to claim 1, characterized in that: The needle end of the punch (136) is provided with a needle seat (139); the structure of the needle selector (114) is block-shaped; each needle selector (114) can press on at least one needle seat (139).

7. A punching mechanism capable of punching holes of different thickness ranges according to claim 1, characterized in that: The lower mold base (211) is provided with a first guide sleeve (210); the upper mold base (110) is provided with a first guide post (111); the first guide post (111) is inserted into the first guide sleeve (210). The lower mold base (211) is provided with a second guide post (217), and the upper mold plate (120) is provided with a second guide sleeve (124); the second guide post (217) is inserted into the second guide sleeve (124). The mounting rod (123) provided on the upper mold base (110) is connected to the upper template (120), and the mounting rod (123) can drive the upper template (120) to move up and down.

8. A punching mechanism capable of punching holes of different thickness ranges according to claim 1, characterized in that: The upper template (120) is provided with a first light source (121) and a first detection camera (122); the lower mold base (211) is provided with a base, the base is provided with a detection hole, and the detection hole is provided with a second light source (215) and a second detection camera (216).

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