A punch mechanism for a stamping die

Abstract

The utility model discloses a punch die inclined punching mechanism relates to punch die technical field, including upper die holder, the lower portion of upper die holder is provided with replacement mechanism, and the replacement mechanism includes lower die holder, and lower die holder is located the lower portion of upper die holder, and the upper surface fixedly connected with lower die fixed base of lower die holder, and the bottom surface fixedly connected with upper die fixed base of upper die holder, and the lower portion of upper die fixed base is provided with four connecting seats, and the lower portion of every connecting seat all is provided with inclined punch, and the top of every inclined punch all is fixedly connected with auxiliary seat, and every auxiliary seat all is located the inside of connecting seat, and the inside of every connecting seat all is slidably connected with positioning rod. The utility model solves when replacing punch, and the operator needs to use wrench and other tools to dismantle bolt one by one, and after taking out old punch, installs new punch again, and re -tighten bolt, and bolt is easy to lose after dismantling, and if the tightening force is uneven when reinstalling, still can lead to punch positioning deviation problem, plays the role of improving punching precision.

Description

Technical Field

[0001] This utility model belongs to the field of stamping die structure design technology, specifically relating to a stamping die oblique punching mechanism. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials into parts. In the process of oblique punching with stamping dies, the punch is a core vulnerable part. After long-term use, it will experience wear and deformation, and needs to be replaced regularly to ensure the punching quality.

[0003] In existing oblique punching mechanisms for stamping dies, the punch is usually fixed to the punch holder by multiple bolts. When replacing the punch, the operator needs to use tools such as wrenches to remove the bolts one by one, remove the old punch, install the new punch, and retighten the bolts. The bolts are easy to lose after removal, and if the tightening force is uneven during reinstallation, it will cause the punch positioning to shift, affecting the punching accuracy. To address these issues, we provide an oblique punching mechanism for stamping dies. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a slanted punching mechanism for stamping dies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A punching mechanism for a stamping die includes an upper die base. A replacement mechanism is provided below the upper die base. The replacement mechanism includes a lower die base located below the upper die base. A lower die fixing seat is fixedly connected to the upper surface of the lower die base, and an upper die fixing seat is fixedly connected to the bottom surface of the upper die base. Four connecting seats are provided below the upper die fixing seat. A slanted punch is provided below each connecting seat. An auxiliary seat is fixedly connected to the top of each slanted punch. Each auxiliary seat is located inside a connecting seat. A positioning rod is slidably connected inside each connecting seat.

[0006] As a preferred embodiment, one end of each positioning rod extends into the interior of the auxiliary seat, and the other end of each positioning rod is fixedly connected to a stop block.

[0007] As a preferred embodiment, each of the stops has two return springs fixedly connected to one side, and the other end of each set of return springs is fixedly connected to the inner wall of the connecting seat.

[0008] As a preferred embodiment, guide blocks are fixedly connected to both sides of the upper mold fixing seat, and two guide grooves are formed on the inner wall of the lower mold fixing seat.

[0009] As a preferred embodiment, the bottom surface of the upper mold fixing seat is fixedly connected with two sets of guide rods, and the inner wall of the lower mold fixing seat is provided with two positioning grooves.

[0010] As a preferred embodiment, each of the connecting seats is fixedly connected to a fixed flange at its top, and the fixed flange has a plurality of positioning holes arranged at equal intervals inside.

[0011] As a preferred embodiment, the upper mold fixing base has two sets of connecting rods slidably connected inside, and the bottom ends of the two sets of connecting rods are fixedly connected to a pressing plate.

[0012] As a preferred embodiment, each set of connecting rods is fixedly connected to a buffer spring at its top end, and the top end of each set of buffer springs is fixedly connected to the inner top wall of the upper mold fixing seat.

[0013] As a preferred embodiment, each of the auxiliary seats has two limiting blocks fixedly connected to its outer surface, and each limiting block is slidably connected to the inside of the connecting seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model, by comprising an upper die base, a lower die base, a lower die fixing base, an upper die fixing base, a connecting base, a slanted punch, an auxiliary base, a positioning rod, a return spring, and a stop block, enables the upper die assembly and the upper die fixing base to descend and combine with the lower die base and the lower die fixing base. This allows the slanted punch to drill a hole in the workpiece above the lower die fixing base. Pulling the stop block moves the positioning rod, and simultaneously stretching the return spring, causing the positioning rod to move out of the auxiliary base, preventing interference from external objects. This allows the auxiliary base and the slanted punch to quickly connect from the connecting base. The new angled punch and auxiliary seat are aligned and slid in, releasing the stop block. Locking is achieved by the contraction force of the return spring, which provides continuous elasticity to ensure that the positioning rod and auxiliary seat fit tightly, preventing the angled punch from loosening during processing. This solves the problem that when changing punches, operators need to use wrenches and other tools to remove the bolts one by one, take out the old punch, install the new punch, and retighten the bolts. The bolts are easily lost after removal, and uneven tightening during reinstallation can cause the punch positioning to shift. This improves the punching accuracy. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a three-dimensional structural schematic diagram of the upper mold base of this utility model in cross-section; Figure 3 This is a three-dimensional structural schematic diagram of the connecting seat of this utility model in cross-section; Figure 4 This is a three-dimensional structural schematic diagram of the upper mold fixing seat of this utility model (cross-sectional view). Figure 5 This is a three-dimensional structural diagram of the lower mold fixing seat of this utility model.

[0016] The figure shows: 1. Upper mold base; 2. Changing mechanism; 201. Lower mold base; 202. Lower mold fixing base; 203. Upper mold fixing base; 204. Connecting base; 205. Angled punch; 206. Auxiliary base; 207. Positioning rod; 208. Return spring; 209. Stop block; 210. Guide block; 211. Guide groove; 212. Guide rod; 213. Positioning groove; 214. Fixed flange; 215. Positioning hole; 216. Connecting rod; 217. Pressing plate; 218. Buffer spring; 219. Limit block. Detailed Implementation

[0017] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0018] Please see Figures 1 to 5 As shown, this utility model embodiment provides a slanted punching mechanism for a stamping die, specifically including an upper die base 1. A replacement mechanism 2 is provided below the upper die base 1. The replacement mechanism 2 includes a lower die base 201, which is located below the upper die base 1. A lower die fixing seat 202 is fixedly connected to the upper surface of the lower die base 201, and an upper die fixing seat 203 is fixedly connected to the bottom surface of the upper die base 1. Guide blocks 210 are fixedly connected to both sides of the upper die fixing seat 203. Two guide grooves 211 are provided on the inner wall of the lower die fixing seat 202. By relying on the cooperation of the guide blocks 210 and the guide grooves 211, the guide blocks 210 and the guide grooves 211 match, which can effectively increase the convenience of positioning the upper die fixing seat 203 and the lower die fixing seat 202.

[0019] Please see Figures 1 to 5 As shown, four connecting seats 204 are provided below the upper die fixing seat 203. Two sets of guide rods 212 are fixedly connected to the bottom surface of the upper die fixing seat 203. Two positioning grooves 213 are opened on the inner wall of the lower die fixing seat 202. The guide rods 212 and the positioning grooves 213 match each other. The cooperation between the guide rods 212 and the positioning grooves 213 can further increase the convenience of positioning the upper die fixing seat 203 and the lower die fixing seat 202. Each connecting seat 204 is provided with a slanted punch 205 below it. An auxiliary seat 206 is fixedly connected to the top of each slanted punch 205. A fixing flange 214 is fixedly connected to the top of each connecting seat 204. The fixing flange 214 has multiple positioning holes 215 arranged at equal intervals inside. The cooperation between the fixing flange 214 and the positioning holes 215 can effectively increase the convenience of disassembling and assembling the connecting seat 204. Bolts can be passed through the positioning holes 215 and connected to the upper die fixing seat 203.

[0020] Please see Figures 1 to 5 As shown, each auxiliary seat 206 is located inside the connecting seat 204. Each connecting seat 204 has a slidably connected positioning rod 207 inside. One end of each positioning rod 207 extends into the interior of the auxiliary seat 206. Two sets of connecting rods 216 are slidably connected inside the upper die fixing seat 203. The bottom ends of the two sets of connecting rods 216 are fixedly connected to a pressing plate 217. Through the cooperation of the connecting rods 216 and the pressing plate 217, the workpiece above the upper die fixing seat 203 can be fixed before punching to prevent it from moving due to pressure, thus increasing the accuracy during the punching process.

[0021] Please see Figures 1 to 5 As shown, a stop 209 is fixedly connected to the other end of each positioning rod 207, and two return springs 208 are fixedly connected to one side of each stop 209. A buffer spring 218 is fixedly connected to the top of each set of connecting rods 216, and the top of each set of buffer springs 218 is fixedly connected to the inner top wall of the upper mold fixing seat 203. Relying on the buffer springs 218, the pressure plate 217 can gradually increase the force applied to the workpiece, ensuring the gradual nature of the pressing force and avoiding the situation of directly applying a large force and causing damage to the workpiece.

[0022] Please see Figures 1 to 5 As shown, the other end of each set of return springs 208 is fixedly connected to the inner wall of the connecting seat 204. Two limiting blocks 219 are fixedly connected to the outer surface of each auxiliary seat 206. Each limiting block 219 is slidably connected to the inside of the connecting seat 204. The limiting block 219 can guide the position of the auxiliary seat 206, increase the accuracy of the auxiliary seat 206 when sliding into the connecting seat 204, and increase the effect of the device in use.

[0023] In use, the upper die base 1 is first connected to an external power device, and the stop block 209 is pulled, which in turn compresses the return spring 208 and causes the positioning rod 207 to slide into the connecting seat 204. Then, the angled punch 205 and the auxiliary seat 206 are slid into the connecting seat 204 along the limiting block 219. The stop block 209 is then released, the return spring 208 is reset, and the positioning rod 207 is pushed into the auxiliary seat 206, completing the installation of the angled punch 205. When punching is required, the workpiece is placed above the lower die fixing seat 202, and the upper die base 1 and the upper die fixing seat 202 are driven by the external power device. 03. When the pressure plate 217 presses the workpiece in advance, the buffer spring 218 can control the gradual change of the pressing force, and then make the lower die fixing seat 202 and the upper die fixing seat 203 overlap, thereby completing the drilling work of the workpiece. When it is necessary to replace the angled punch 205, pull the stop block 209, and then move the positioning rod 207 out of the auxiliary seat 206. At this time, the auxiliary seat 206 is not disturbed by external objects, and then quickly move the angled punch 205 and the auxiliary seat 206 out of the connecting seat 204, and the old angled punch 205 can be removed. After replacing the new angled punch 205, repeat the installation steps.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slanted punching mechanism for a stamping die, comprising an upper die base (1), characterized in that: A replacement mechanism (2) is provided below the upper mold base (1). The replacement mechanism (2) includes a lower mold base (201). The lower mold base (201) is located below the upper mold base (1). A lower mold fixing seat (202) is fixedly connected to the upper surface of the lower mold base (201). An upper mold fixing seat (203) is fixedly connected to the bottom surface of the upper mold base (1). Four connecting seats (204) are provided below the upper mold fixing seat (203). A slanted punch (205) is provided below each connecting seat (204). An auxiliary seat (206) is fixedly connected to the top of each slanted punch (205). Each auxiliary seat (206) is located inside the connecting seat (204). A positioning rod (207) is slidably connected inside each connecting seat (204).

2. The oblique punching mechanism for a stamping die according to claim 1, characterized in that: One end of each of the positioning rods (207) extends into the interior of the auxiliary seat (206), and the other end of each of the positioning rods (207) is fixedly connected to a stop (209).

3. The oblique punching mechanism for a stamping die according to claim 2, characterized in that: Two return springs (208) are fixedly connected to one side of each of the stops (209), and the other end of each set of return springs (208) is fixedly connected to the inner wall of the connecting seat (204).

4. The oblique punching mechanism for a stamping die according to claim 1, characterized in that: Guide blocks (210) are fixedly connected to both sides of the upper mold fixing seat (203), and two guide grooves (211) are opened on the inner wall of the lower mold fixing seat (202).

5. The oblique punching mechanism for a stamping die according to claim 1, characterized in that: The bottom surface of the upper mold fixing seat (203) is fixedly connected with two sets of guide rods (212), and the inner wall of the lower mold fixing seat (202) has two positioning grooves (213).

6. The oblique punching mechanism for a stamping die according to claim 1, characterized in that: Each of the connecting seats (204) is fixedly connected to a fixed flange (214) at its top end, and the fixed flange (214) has a plurality of equidistant positioning holes (215) inside.

7. The oblique punching mechanism for a stamping die according to claim 1, characterized in that: The upper mold fixing base (203) has two sets of connecting rods (216) slidably connected inside, and the bottom ends of the two sets of connecting rods (216) are fixedly connected to a pressing plate (217).

8. The oblique punching mechanism for a stamping die according to claim 7, characterized in that: Each set of connecting rods (216) has a buffer spring (218) fixedly connected to its top end, and the top end of each set of buffer springs (218) is fixedly connected to the inner top wall of the upper mold fixing seat (203).

9. The oblique punching mechanism for a stamping die according to claim 1, characterized in that: Two limiting blocks (219) are fixedly connected to the outer surface of each auxiliary seat (206), and each limiting block (219) is slidably connected to the inside of the connecting seat (204).

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