A quick-detachable assembly mechanism for a punching machine lower die base

Abstract

The invention discloses a quick-detachable assembly mechanism for a lower die base of a punching machine, comprising a lower die base body, a lower die push block, and a lower die blade plate. A lower die slide is provided on the top of the lower die base body. Two lower die limiting plates are fixed to the top of the lower die base body. Push block slots are provided on both sides of the lower die push block. The edges of the two lower die limiting plates are respectively clamped in the push block slots. The lower die blade plate is fixed to the top of the lower die push block. A vertical hole is provided at the bottom of the lower die slide. A lateral opening is provided between the vertical hole and the end surface of the lower die base body. A radial insertion hole is provided on the side of a lifting top block. A pull rod is inserted into the radial insertion hole. A stopper for supporting the pull rod is provided at the end of the lower die base body. A push block latch is formed on the top of the lifting top block. The push block latch is inserted into the lower die push block from the bottom and the two slide together. The invention facilitates the rapid disassembly and replacement of the blade plate, not only saving tool changing time but also effectively improving processing efficiency.

Description

Technical Field

[0001] The invention relates to a punching machine, in particular to a quick-detachable assembly mechanism of a lower die base of the punching machine. Background Art

[0002] Punching is a common process during PCB processing. Existing PCB punching equipment typically achieves this through the interaction of a punch needle and a blade. In such equipment, the blade is susceptible to wear and tear after repeated cutting operations, resulting in poor punching results. Therefore, the blade plate must be replaced promptly based on processing conditions. Existing blade plates are typically fixed directly to the lower die base with screws, which wastes significant time during assembly and disassembly, reducing processing efficiency and failing to meet production requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a quick-release assembly mechanism for the lower die base of a punching machine, which helps to quickly disassemble and replace the blade plate and thus improve the processing efficiency, in response to the shortcomings of the existing technology.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0005] The cam is provided with a plurality of cutting edges on the top of the lower die push block, and the cam is provided with a plurality of cutting edges on the top of the lower die slide. The cam is provided with a lifting block which can slide up and down, and a lateral opening is provided between the vertical hole and the end face of the lower mold base body, and a radial socket is provided on the side of the lifting block, and a pull rod is inserted in the radial socket and the two slide together, and the pull rod extends to the outside of the lateral opening, and the end of the lower mold base body is provided with a stopper for supporting the pull rod, and a push block pin is formed on the top of the lifting block, and the push block pin is inserted into the lower mold push block from the bottom and the two slide together, when the pull rod is pulled out of the radial socket, the lifting block descends along the vertical hole, and the push block pin is separated from the lower mold push block, so that the lower mold push block can be pulled out of the lower mold slide groove.

[0006] Preferably, a plurality of countersunk holes are provided on the lower die blade plate, and hexagon socket screws are passed through the countersunk holes. The hexagon socket screws are screwed into the lower die push block, thereby fixing the lower die blade plate to the top of the lower die push block.

[0007] Preferably, a blade plate positioning pin is formed on the top of the lower mold push block, and a blade plate positioning hole is opened on the lower mold blade plate. The blade plate positioning hole corresponds one-to-one to the blade plate positioning pin, and the blade plate positioning pin is inserted into the blade plate positioning hole.

[0008] Preferably, the lower die limiting plate is fixed to the top of the lower die base body by countersunk screws.

[0009] Preferably, the retaining member is in the shape of an elongated strip, is arranged across both sides of the lateral opening, and is fixedly connected to the end of the lower mold base.

[0010] Preferably, a pressing block is provided above the pull rod, the pressing block is arranged across both sides of the lateral opening, and the pressing block is fixedly connected to the end of the lower mold base body.

[0011] Preferably, an end cap is formed at the end of the pull rod.

[0012] When the lower die blade plate needs to be replaced, it is only necessary to pull out the pull rod so that the lifting block descends along the vertical hole and the push block pin is separated from the lower die push block. At this time, the lower die push block can be pulled out from the lower die slide groove to facilitate the quick disassembly and replacement of the lower die blade plate, or directly replace the spare lower die push block equipped with the lower die blade plate. Based on the above principles, it can be seen that the present invention facilitates the rapid disassembly and replacement of the cutting edge plate, which not only saves tool change time but also effectively improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure of the upper and lower die bases of the punching machine Figure 1 ;

[0014] Figure 2 Decomposition of the lower die base Figure 1 ;

[0015] Figure 3 This is the structural diagram of the punching machine;

[0016] Figure 4 for Figure 3 Enlarged view of part A;

[0017] Figure 5 The structure of the upper and lower die bases of the punching machine Figure 2 ;

[0018] Figure 6 Decomposition of the lower die base Figure 2 ;

[0019] Figure 7 This is a side view of the upper and lower die bases of the punching machine;

[0020] Figure 8 This is a structural diagram of the image acquisition mechanism;

[0021] Figure 9 This is an exploded view of the image acquisition mechanism;

[0022] Figure 10 This is a structural diagram of the camera mount;

[0023] Figure 11 This is an exploded view of the locking device;

[0024] Figure 12 for Figure 11 Magnified view of part B. DETAILED DESCRIPTION

[0025] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] This embodiment proposes a quick-release assembly mechanism for the lower die base of a punching machine, Figures 1 to 4As shown, it includes a lower die base body 100, a lower die push block 101 and a lower die blade plate 102. The top of the lower die base body 100 is provided with a lower die slide groove 103. The lower die push block 101 is arranged in the lower die slide groove 103, and the lower die push block 101 can slide relative to the lower die slide groove 103. Two lower die limiting plates 104 are fixed on the top of the lower die base body 100. The two lower die limiting plates 104 are respectively arranged in the lower die slide groove On both sides of 103, the two sides of the lower mold push block 101 are respectively provided with a push block slot 105, the edges of the two lower mold limit plates 104 are respectively clamped in the push block slot 105, the lower mold blade plate 102 is fixed to the top of the lower mold push block 101, and the lower mold blade plate 102 is provided with a plurality of blades 106, the bottom of the lower mold slide 103 is provided with a vertical hole 107, and a vertical hole 107 is provided with a A lifting top block 108 is provided, a lateral opening 109 is provided between the vertical hole 107 and the end surface of the lower mold base body 100, a radial insertion hole 110 is provided on the side of the lifting top block 108, a pull rod 111 is inserted into the radial insertion hole 110 and the two are slidably matched, the pull rod 111 extends to the outside of the lateral opening 109, and a stopper 112 for supporting the pull rod 111 is provided at the end of the lower mold base body 100. A push block pin 113 is formed at the top of the lifting top block 108, and the push block pin 113 is inserted into the lower mold push block 101 from the bottom and the two are slidably matched. When the pull rod 111 is pulled out from the radial socket 110, the lifting top block 108 descends along the vertical hole 107, and the push block pin 113 is separated from the lower mold push block 101, so that the lower mold push block 101 can be pulled out from the lower mold slide groove 103.

[0028] In the above structure, the lower die push block 101 is embedded in the lower die slot 103 on the top of the lower die base body 100, and the lower die push block 101 is slidably matched with the lower die slot 103. When the lower die push block 101 is installed in place, the lifting top block 108 is lifted along the vertical hole 107 until the push block pin 113 is inserted into the lower die push block 101 from the bottom, and then the lifting top block 108 is positioned by using the cooperation of the pull rod 111 and the stopper 112, and then the lower die is lifted. The die push block 101 is fixed in the lower die chute 103. When the lower die blade plate 102 needs to be replaced, it is only necessary to pull out the pull rod 111, so that the lifting block 108 descends along the vertical hole 107. At the same time, the push block latch 113 is separated from the lower die push block 101. At this time, the lower die push block 101 can be pulled out from the lower die chute 103 to facilitate the rapid disassembly and replacement of the lower die blade plate 102, or directly replace it with a spare lower die push block 101 equipped with the lower die blade plate 102. Based on the above principle, it can be seen that the present invention helps to quickly disassemble and replace the blade plate, which not only saves tool changing time but also effectively improves processing efficiency.

[0029] Regarding the fixing method of the lower die blade plate 102, in this embodiment, a plurality of countersunk holes 114 are opened on the lower die blade plate 102, and hexagon socket screws 115 are passed through the countersunk holes 114. The hexagon socket screws 115 are screwed into the lower die push block 101, thereby fixing the lower die blade plate 102 to the top of the lower die push block 101.

[0030] In order to play a positioning and guiding role during the process of disassembling and assembling the lower die cutting edge plate 102, in this embodiment, a cutting edge plate positioning pin 116 is formed on the top of the lower die push block 101, and a cutting edge plate positioning hole 117 is opened on the lower die cutting edge plate 102. The cutting edge plate positioning hole 117 corresponds one-to-one to the cutting edge plate positioning pin 116, and the cutting edge plate positioning pin 116 is inserted into the cutting edge plate positioning hole 117.

[0031] Furthermore, the lower die limiting plate 104 is fixed to the top of the lower die base 100 by countersunk screws 118 .

[0032] As a preferred embodiment, the retaining member 112 is in the shape of an elongated strip, and the retaining member 112 is arranged across both sides of the lateral opening 109 , and the retaining member 112 is fixedly connected to the end of the lower mold base 100 .

[0033] In this embodiment, a pressing block 119 is provided above the pull rod 111 . The pressing block 119 is arranged across both sides of the lateral opening 109 , and the pressing block 119 is fixedly connected to the end of the lower mold base 100 .

[0034] Based on the cooperation between the above-mentioned blocking member 112 and the pull rod 111, not only a better plugging and unplugging space is provided for the pull rod 111, but also the assembly and disassembly work is convenient.

[0035] To facilitate manual operation, in this embodiment, an end cap 120 is formed at the end of the pull rod 111 .

[0036] Example 2

[0037] In practice, to ensure accurate punching positions, target patterns are typically pre-printed on the PCB. A camera is then installed on the punching machine's die base, capturing the target pattern's position to determine the punching position. However, because PCBs expand and contract under different environmental conditions, and their expansion and contraction coefficients are unpredictable, the punching needle cannot accurately translate to the target position, affecting the accuracy of the punching position and reducing the PCB processing yield.

[0038] In this regard, this embodiment proposes a lower die base mechanism with an optical reference target, which helps the control system calculate the expansion and contraction coefficient of the PCB board, helps to accurately control the punching position of the punch needle, and thus improves the accuracy of the punching position. Figure 5 and Figure 6 As shown, it includes a lower die push block 101, a lower die blade plate 102 and a target fixing plate 121 are fixed to the top of the lower die push block 101, and the lower die blade plate 102 and the target fixing plate 121 are arranged side by side, a plurality of blades 106 are opened on the lower die blade plate 102, and a plurality of target light guiding parts 122 are provided on the target fixing plate 121, and the target light guiding parts 122 are aligned one by one with the blades 106, and a light trough 123 is fixed to the bottom of the target fixing plate 121, and a light source extending along the length direction of the target fixing plate 121 is provided in the light trough 123, and the target light guiding part 122 forms an optical reference target by the light emitted by the light source.

[0039] In the above-mentioned mechanism, a target fixing plate 121 is provided adjacent to the lower die blade plate 102, and the target light-guiding portion 122 is aligned one by one with the blade 106. At the same time, a light trough 123 with a light source is provided below the target fixing plate 121. When the light source is turned on, the target light-guiding portion 122 is illuminated, thereby forming an optical reference target on the target fixing plate 121 that can be captured by the camera. When the PCB board is translated to the lower die blade plate 102 and the target fixing plate 121, the graphic target of the PCB board is captured by the camera. The system calculates the expansion and contraction coefficient of the PCB board according to the correspondence between the graphic target and the optical reference target, and then accurately controls the translation position of the punch needle according to the expansion and contraction coefficient, thereby improving the accuracy of the punching position and better meeting the production requirements.

[0040] In order to avoid image quality being affected by light leakage, in this embodiment, the top of the light trough 123 is tightly matched with the bottom of the target fixing plate 121 so that the light source is placed in the cavity formed by the light trough 123 and the target fixing plate 121.

[0041] As a preferred embodiment, a plurality of light guide seats 124 are formed on the top of the target fixing plate 121 , and the target light guide portion 122 is disposed on the light guide seat 124 .

[0042] In order to better match the target fixing plate 121, in this embodiment, the light guide seat 124 protrudes upward, and a target cover plate 125 is fixed on the top of the target fixing plate 121. A plurality of avoidance holes 126 are opened on the target cover plate 125. The light guide seat 124 corresponds to the avoidance holes 126 one by one, and the light guide seat 124 is inserted into the avoidance holes 126.

[0043] In this embodiment, the top surface of the target cover plate 125 is flush with the top surface of the lower die blade plate 102. This flush structural design helps to smoothly transfer the PCB board.

[0044] Example 3

[0045] In practical applications, to ensure punching accuracy, a control system is required to monitor and capture images of the PCB surface. Existing technical means generally use a vertically mounted camera to capture the surface image of the PCB board. However, this vertically mounted camera occupies a certain vertical space and is not convenient for installation on the upper die base of the punching machine, making it difficult to meet the assembly requirements of the equipment.

[0046] In this regard, this embodiment proposes a 90-degree image acquisition mechanism for the alignment camera that can be laterally fixed to the bottom of the upper die base, which helps to save vertical space of the punching machine. Figures 7 to 10As shown, it includes an upper mold base 130 and a lower mold base 100, the lower mold base 100 is located below the upper mold base 130, the lower mold base 100 is provided with a carrier 127 for placing the PCB board 200, the bottom of the upper mold base 130 is provided with a camera fixing seat 131, the end of the camera fixing seat 131 is installed with a camera 133, the camera fixing seat 131 is provided with a transversely extending camera installation port 132, the camera installation port 132 runs through the two ends of the camera fixing seat 131, and the camera installation port 132 is provided with a camera fixing port 132. The opening 132 is aligned with the lens of the camera 133, and a prism slot 134 is provided at the end of the camera fixing seat 131 away from the camera 133. The camera mounting opening 132 is communicated with the prism slot 134, and a right-angle reflection prism 135 is fixed in the prism slot 134. A collection window 136 is provided at the bottom of the prism slot 134, and the collection window 136 is arranged opposite to the carrier 127. The two reflecting surfaces of the right-angle reflection prism 135 are respectively aligned with the camera 133 and the collection window 136.

[0047] In the above structure, a horizontally arranged camera fixing seat 131 is installed at the bottom of the upper mold base 130, a camera 133 is installed at one end of the camera fixing seat 131, and a right-angle reflection prism 135 is provided at the other end of the camera fixing seat 131. Based on the 90° angle reflection effect of the right-angle reflection prism 135, the horizontally arranged camera 133 can capture the surface image of the PCB board under the upper mold base 130. Compared with the existing technology, the present invention can be fixed horizontally to the bottom of the upper mold base, and its image acquisition position is closer to the punching position, which helps to save the vertical space of the punching machine and better meets the installation requirements.

[0048] In order to support and protect the camera 133 , this embodiment includes a camera fixing cover 137 . The camera fixing cover 137 is fixedly connected to the camera fixing seat 131 , and the camera 133 is installed in the camera fixing cover 137 .

[0049] In order to install and fix the right-angle reflecting prism 135 , in this embodiment, a prism pressing plate 138 is fixed in the prism notch 134 , and the prism pressing plate 138 is pressed onto the outer side of the right-angle reflecting prism 135 .

[0050] As a preferred embodiment, the opening of the prism slot 134 is covered with an L-shaped fixing plate 139 , and the L-shaped fixing plate 139 is fixedly connected to the camera fixing seat 131 .

[0051] In order to capture clearer images, this embodiment also provides an auxiliary light source for the camera 133. Specifically, an LED light source fixing ring 140 is fixed to the bottom of the camera fixing base 131. The LED light source fixing ring 140 surrounds the acquisition window 136, and an LED light source is provided on the LED light source fixing ring 140.

[0052] In order to facilitate the fixation of the cable of the camera 133, in this embodiment, two cable clamping blocks 141 are fixed to the end of the camera fixing cover 137 away from the camera fixing seat 131, and a cable clamping groove 142 is opened between the two cable clamping blocks 141, and the cable of the camera 133 passes through the cable clamping groove 142.

[0053] Example 4

[0054] In actual applications, in order to achieve accurate control of the punch needle position, it is generally necessary to install a punch needle fixing block and a camera fixing seat on the upper die base at the same time. The punch needle fixing block and the camera fixing seat are used to carry the punch needle and the camera respectively. Since the position of the punch needle fixing block needs to be adjusted according to the punching position, it is difficult for the punch needle fixing block and the camera fixing seat to be locked with each other. Especially during the processing process, the vibration of the machine will cause the target image collected by the camera to be inaccurate, so the moving position of the punch needle cannot be accurately controlled, which seriously affects the punching processing quality.

[0055] In this regard, this embodiment proposes a locking device for the punching machine image acquisition mechanism that can ensure the relative stability of the punch pin fixing block and the camera fixing seat, which helps to improve the punching processing quality. Figure 5 、 Figure 11 and Figure 12As shown, it includes an upper die base 130, a fixed pad 151 and a cylinder mounting plate 152. A punch pin fixing block 153 is installed at the bottom of the upper die base 130. Both sides of the punch pin fixing block 153 are respectively provided with a transversely extending locking slot 154. The image acquisition mechanism 150 includes a camera fixing seat 131. The fixed pad 151 is arranged above the upper die base 130 and the positions of the two are relatively fixed. The cylinder mounting plate 152 is fixed to the fixed pad 151. The top of the fixed plate 151 is provided with a cylinder 155 fixed on the cylinder mounting plate 152. A lifting plate 156 capable of lifting is provided between the cylinder mounting plate 152 and the fixed plate 151. The telescopic shaft of the cylinder 155 is fixedly connected to the lifting plate 156. A plurality of vertical slide rods 157 extending downward are fixed on the lifting plate 156. The vertical slide rods 157 pass through the fixed plate 151 and the upper die holder 130 in sequence, and the vertical slide rods 157 are provided on the upper die holder 130. 157 are slidably matched with the fixed pad 151 and the upper die seat 130. The bottom of the upper die seat 130 is provided with two locking limit plates 158. The two locking limit plates 158 are respectively arranged on both sides of the punch pin fixing block 153. The locking limit plates 158 are aligned one by one with the locking card slots 154. The edges of the locking limit plates 158 are clamped in the locking card slots 154, and the locking limit plates 158 can be moved up and down relative to the locking card slots 154. The lower ends of the multiple vertical slides 157 are fixedly connected to two locking limit plates 158 respectively, and the top of the camera fixing seat 131 is fixedly connected to one of the multiple vertical slides 157. The cylinder 155 drives the top plate 156, the vertical slide 157, the locking limit plate 158 and the camera fixing seat 131 to rise or fall, so that the locking limit plate 158 and the inner wall of the locking slot 154 are pressed against each other or relatively separated.

[0056] In the above structure, under the driving action of the cylinder 155, the ejector plate 156, the vertical slide bar 157, the locking limit plate 158 and the camera fixing seat 131 can be driven to rise or fall. When the punch fixing block 153 needs to be translated, the cylinder 155 can drive the locking limit plate 158 to move downward and separate from the inner wall of the locking slot 154, thereby removing the resistance to the punch fixing block 153. When the punch fixing block 153 is translated into place, the cylinder 155 can drive the locking limit plate 158 to move upward and press against the inner wall of the locking slot 154, so that the punch fixing block and the camera fixing seat are relatively fixed, especially in an environment where the machine vibrates. It can not only improve the accuracy of the target image captured by the camera, but also help to improve the punching processing quality, thereby meeting production requirements.

[0057] In order to improve the accuracy of the lifting action, in this embodiment, the cylinder 155 is fixed at the middle of the cylinder mounting plate 152.

[0058] In order to facilitate fixation and assembly, in this embodiment, the cylinder mounting plate 152 is an inverted "U"-shaped mounting plate.

[0059] As a preferred embodiment, a connecting rod 159 is provided on the top of the camera fixing seat 131 , and the connecting rod 159 is fixedly connected to one of the multiple vertical sliding rods 157 .

[0060] In this embodiment, the locking limit plate 158 is in the shape of an elongated strip. This elongated locking limit plate 158 can fully contact the inner wall of the locking slot 154, making the two more tightly matched after abutment, and further improving the relative stability of the punch fixing block and the camera fixing seat.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A punching machine, characterized in that: The punching machine includes a quick-release combination mechanism of the lower die base and a locking device of the image acquisition mechanism; The quick-detachable assembly mechanism of the lower die base comprises a lower die base body (100), a lower die push block (101) and a lower die blade plate (102); a lower die slide groove (103) is provided on the top of the lower die base body (100); the lower die push block (101) is arranged in the lower die slide groove (103), and the lower die push block (101) can slide relative to the lower die slide groove (103); two lower die limit plates (104) are fixed on the top of the lower die base body (100); the two lower die limit plates (104) are respectively arranged at On both sides of the lower die chute (103), on both sides of the lower die push block (101), push block slots (105) are respectively provided, and the edges of the two lower die limit plates (104) are respectively clamped in the push block slots (105), the lower die blade plate (102) is fixed to the top of the lower die push block (101), and the lower die blade plate (102) is provided with a plurality of blades (106), the bottom of the lower die chute (103) is provided with a vertical hole (107), and a screw thread is provided in the vertical hole (107) to be able to move upward. A lifting top block (108) slides downward, a lateral opening (109) is provided between the vertical hole (107) and the end surface of the lower die base body (100), a radial insertion hole (110) is provided on the side of the lifting top block (108), a pull rod (111) is inserted into the radial insertion hole (110) and the two are slidably matched, the pull rod (111) extends to the outside of the lateral opening (109), and a stopper (112) for supporting the pull rod (111) is provided at the end of the lower die base body (100). ), a push block latch (113) is formed at the top of the lifting top block (108), the push block latch (113) is inserted into the lower mold push block (101) from the bottom and the two are slidably matched, when the pull rod (111) is pulled out from the radial socket (110), the lifting top block (108) descends along the vertical hole (107), and the push block latch (113) is separated from the lower mold push block (101), so that the lower mold push block (101) can be drawn out from the lower mold slide groove (103); The locking device of the image acquisition mechanism comprises an upper die seat (130), a fixed pad (151) and a cylinder mounting plate (152), a punch pin fixing block (153) is installed at the bottom of the upper die seat (130), and a locking slot (154) extending laterally is respectively provided on both sides of the punch pin fixing block (153), the image acquisition mechanism (150) comprises a camera fixing seat (131), the fixed pad (151) is arranged above the upper die seat (130) and the positions of the two are relatively fixed, the cylinder mounting plate (152) is provided with a punch pin fixing block (153), and a locking slot (154) extending laterally is provided on both sides of the punch pin fixing block (153). 2) fixed to the top of the fixed pad (151), a cylinder (155) is fixed on the cylinder mounting plate (152), a lifting plate (156) capable of being raised and lowered is provided between the cylinder mounting plate (152) and the fixed pad (151), a telescopic shaft of the cylinder (155) is fixedly connected to the lifting plate (156), a plurality of vertical slide bars (157) extending downward are fixed on the lifting plate (156), and the vertical slide bars (157) pass through the fixed pad (151) and the upper die base (130) in sequence, The vertical slide bar (157) is slidably matched with the fixed pad (151) and the upper die seat (130), and two locking limit plates (158) are provided at the bottom of the upper die seat (130). The two locking limit plates (158) are respectively provided on both sides of the punch pin fixed block (153). The locking limit plates (158) are aligned one by one with the locking slots (154). The edges of the locking limit plates (158) are clamped in the locking slots (154), and the locking limit plates (158) can be relatively fixed to the locking slots (154). 54) moves up and down, the lower ends of the multiple vertical slide bars (157) are fixedly connected to the two locking limit plates (158) respectively, and the top of the camera fixing seat (131) is fixedly connected to one of the multiple vertical slide bars (157), and the cylinder (155) drives the ejection plate (156), the vertical slide bar (157), the locking limit plate (158) and the camera fixing seat (131) to rise or fall, so that the locking limit plate (158) and the inner wall of the locking slot (154) are pressed against each other or relatively separated.

2. The punching machine according to claim 1, wherein: The lower die blade plate (102) is provided with a plurality of countersunk holes (114), and the countersunk holes (114) are penetrated by hexagon socket screws (115). The hexagon socket screws (115) are screwed into the lower die push block (101), thereby fixing the lower die blade plate (102) to the top of the lower die push block (101).

3. The punching machine according to claim 1, wherein: A blade plate positioning pin (116) is formed on the top of the lower mold push block (101), and a blade plate positioning hole (117) is opened on the lower mold blade plate (102). The blade plate positioning hole (117) corresponds to the blade plate positioning pin (116) one by one, and the blade plate positioning pin (116) is inserted into the blade plate positioning hole (117).

4. The punching machine according to claim 1, wherein: The lower die limiting plate (104) is fixed to the top of the lower die base (100) via countersunk screws (118).

5. The punching machine according to claim 1, wherein: The retaining member (112) is in the shape of an elongated strip, and is arranged across both sides of the lateral opening (109). The retaining member (112) is fixedly connected to the end of the lower die base body (100).

6. The punching machine according to claim 1, wherein: A pressing block (119) is provided above the pull rod (111), the pressing block (119) is arranged across both sides of the lateral opening (109), and the pressing block (119) is fixedly connected to the end of the lower die base (100).

7. The punching machine according to claim 1, wherein: An end cap (120) is formed at the end of the pull rod (111).

Images