Snap ring punch
By designing the snap-ring punch, the problem of frequent replacement and disassembly of existing die-cast punches is solved, and the convenience and cost reduction of replacement of impact heads is achieved.
Patent Information
- Application Number
- CN202421467738.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-25
AI Technical Summary
After the existing die-cast punches are in direct contact with the material, their wear resistance, high temperature oxidation resistance and heat fatigue resistance are reduced, resulting in a shortening of the punch life, which requires frequent replacement, and the replacement process is cumbersome.
A snap ring punch is designed, including a punch body, a dovetail-shaped bump, a dovetail-shaped groove impact head, a first snap ring and a second snap ring. Through the design of these snap rings, the operator can easily disassemble and replace the impact head without disassembling the entire punch body.
With this design, the complexity and cost of impact head replacement are reduced, and the service life and replacement efficiency of punch are improved.
Smart Images
Figure CN222957466U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel bar processing, and particularly relates to a snap ring punch head. Background Art
[0002] A die casting machine is a casting device that, under the action of pressure, injects molten metal liquid into a mold for cooling and forming, and obtains a solid metal casting after opening the mold. Among them, the injection punch is a core component on the die casting machine. The punch is a metal part installed on the stamping die, which is applied to directly contact the material to deform the material and cut the material.
[0003] After long-term processing of the die casting punch in the prior art, the part of the punch in direct contact with the material has been processed for a long time. The wear resistance of the punch is poor, and the high-temperature oxidation resistance and heat fatigue resistance will gradually decrease. Therefore, the processing accuracy will be lost, and the service life of the punch itself is relatively low. Therefore, the punch needs to be replaced frequently. However, when replacing the punch, it is usually necessary to disassemble the components outside the punch one by one to replace the punch, which is rather cumbersome. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and propose a snap ring punch head to solve the technical problem that when the punch needs to be replaced frequently, it is usually necessary to disassemble the components outside the punch one by one to replace the punch, which is rather cumbersome.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A snap ring punch head includes a punch body. A convex block with a dovetail cross-section is provided at the top end of the punch body. A punch head with a dovetail groove is slidably connected to the convex block, and the diameter of the punch head is larger than that of the punch body. External threads are provided on the outer wall of the circumference of the punch head. It also includes a first snap ring, which is divided into a first connecting block and a first supporting block. An inner thread is provided on the inner wall of the circumference of the first connecting block, and the first supporting block and the first connecting block are integrally formed. The inner thread on the first connecting block is screwed with the external thread on the punch head, and one end face of the first supporting block abuts against one end face of the punch head. It also includes a second snap ring. The punch body is divided into a first body and a second body. An external thread is provided on the circumferential surface of the second body, and the external thread on the second body is located on the side of the second body close to the first body. The second snap ring is divided into a second connecting block and a second supporting block. An inner thread is provided on the inner wall of the circumference of the second connecting block, and this inner thread is screwed with the external thread on the second body. The second supporting block and the second connecting block are integrally formed. Two third snap rings are sleeved on the circumferential surface of the second body between the first snap ring and the second snap ring.
[0007] Working principle:
[0008] During the disassembly process of the punch head, the operator first unscrews the second snap ring from the punch body until the second snap ring is screwed out from the bottom of the punch body. Then, directly take out the two third snap rings from the punch body. Next, unscrew the first snap ring from the impact head, and then slide the impact head out from the convex block, and the impact head can be replaced. In this way, the impact head that needs to be frequently replaced can be replaced instead of directly replacing the entire punch body, thereby reducing the processing cost, and the impact head can be disassembled more conveniently through this disassembly method.
[0009] The beneficial effects of the present utility model are:
[0010] When the impact head needs to be replaced, the operator first unscrews the second snap ring from the punch body until the second snap ring is screwed out from the bottom of the punch body. Then, directly take out the two third snap rings from the punch body. Next, unscrew the first snap ring from the impact head, and then slide the impact head out from the convex block, and the impact head can be replaced. In this way, the processing cost is reduced, and the impact head can be disassembled more conveniently through this disassembly method. Description of the drawings
[0011] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;
[0012] Figure 2 It is a schematic diagram of the sectional structure domain of the present utility model;
[0013] Figure 3 It is a schematic structural diagram of the first snap ring;
[0014] Figure 4 It is a schematic structural diagram of the second snap ring;
[0015] Figure 5 It is a schematic structural diagram of an embodiment of the present utility model.
[0016] Description of the reference numerals: punch body 1, convex block 2, impact head 3, first snap ring 4, first connecting block 5, first support block 6, second snap ring 7, first body 8, second body 9, second connecting block 10, second support block 11, third snap ring 12, inclined surface 13, locking bolt 15, first threaded hole 16, second threaded hole 17, smooth section 18. Specific embodiments
[0017] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments.
[0018] As Figure 1 、 Figure 2 、 Figure 3 AndFigure 4 As shown in the figure, a snap ring punch includes a punch body 1. A convex block 2 with a dovetail-shaped cross-section is provided at the top end of the punch body 1. A punch head 3 with a dovetail-shaped groove is slidably connected to the convex block 2, and the diameter of the punch head 3 is larger than that of the punch body 1. External threads are provided on the outer wall of the circumference of the punch head 3. It also includes a first snap ring 4, which is divided into a first connecting block 5 and a first supporting block 6. An inner thread is provided on the inner wall of the circumference of the first connecting block 5, and the first supporting block 6 and the first connecting block 5 are integrally formed. The inner thread on the first connecting block 5 is screwed with the external thread on the punch head 3, and one end face of the first supporting block 6 abuts against one end face of the punch head 3. It further includes a second snap ring 7. The punch body 1 is divided into a first body 8 and a second body 9. An external thread is provided on the circumferential surface of the second body 9, and the external thread on the second body 9 is located on the side of the second body 9 close to the first body 8. The second snap ring 7 is divided into a second connecting block 10 and a second supporting block 11. An inner thread is provided on the inner wall of the circumference of the second connecting block 10, and this inner thread is screwed with the external thread on the second body 9. The second supporting block 11 and the second connecting block 10 are integrally formed. Two third snap rings 12 are sleeved on the circumferential surface of the second body 9 between the first snap ring 4 and the second snap ring 7.
[0019] During the disassembly of the punch, the operator first unscrews the second snap ring 7 from the punch body 1 until the second snap ring 7 is unscrewed from the bottom of the punch body 1. Then, directly take out the two third snap rings 12 from the punch body 1. Next, unscrew the first snap ring 4 from the punch head 3, and then slide the punch head 3 out from the convex block 2, and the punch head 3 can be replaced.
[0020] As Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, an annular inclined surface 13 is provided at the edge of the side of the punch head 3 away from the punch body. The inclined surface 13 is lower than the height of the first snap ring 4. It further includes four locking bolts 15. Four uniformly distributed first threaded holes 16 are opened on the outer wall of the circumference of the second connecting block 10. The four locking bolts 15 are respectively screwed into the first threaded holes 16 in a one-to-one correspondence. A smooth section 18 is provided at one end of the second body away from the first body, and the bottoms of the four locking bolts 15 abut against the smooth section 18. The third snap ring 12 is made of copper material. An inner thread for screwing with a pressure injection rod is provided on the inner wall of the punch body 1 near the bottom. A gap for increasing the expansion coefficient of the third snap ring 12 is provided on the third snap ring 12.
[0021] The provided inclined surface 13 facilitates the filling of molten aluminum, which expands the third clamping ring 12 to closely fit the inner wall of the barrel. The provided locking bolt 15 tightly screws the second clamping ring 7 onto the punch body 1 to prevent the second clamping ring 7 from loosening on the punch body 1. The bottom of the locking bolt 15 abuts against the smooth section 18 on the second body 9, which can generate a tensioning phenomenon to further prevent the second clamping ring 7 from loosening on the punch body 1. Moreover, the third clamping ring 12 made of copper material and the gaps provided on the third clamping ring 12 can both increase the expansion coefficient of the second clamping ring 7.
[0022] Working principle:
[0023] When the impact head 3 needs to be replaced and disassembled, first, the operator unscrews the locking bolt 15 from the second clamping ring 7, then unscrews the second clamping ring 7 from the punch body 1 until the second clamping ring 7 is removed from the bottom of the punch body 1. Then, directly take out the two third clamping rings 12 from the punch body 1. Next, unscrew the first clamping ring 4 from the impact head 3, and then slide the impact head 3 out from the convex block 2, and the impact head 3 can be replaced. By this method, the impact head 3 that needs to be frequently replaced can be replaced instead of directly replacing the entire punch body 1, thus reducing the processing cost, and the impact head 3 can be disassembled more conveniently through this disassembly method.
[0024] The provided inclined surface 13 facilitates the filling of molten aluminum, which expands the third clamping ring 12 to closely fit the inner wall of the barrel. The provided locking bolt 15 tightly screws the second clamping ring 7 onto the punch body 1 to prevent the second clamping ring 7 from loosening on the punch body 1. The bottom of the locking bolt 15 abuts against the smooth section 18 on the second body 9, which can generate a tensioning phenomenon to further prevent the second clamping ring 7 from loosening on the punch body 1. Moreover, the third clamping ring 12 made of copper material and the gaps provided on the third clamping ring 12 can both increase the expansion coefficient of the second clamping ring 7.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.
Claims
1. A snap ring punch, characterized in that: The punch body (1) comprises a punch body (1), wherein the top end of the punch body (1) is provided with a convex block (2) with a dovetail-shaped cross section, the convex block (2) is slidably connected with an impact head (3) with a dovetail-shaped groove, and the diameter of the impact head (3) is larger than the punch body (1), and the outer wall of the circumference of the impact head (3) is provided with an external thread, and further comprises a first clamping ring (4), the first clamping ring (4) is divided into a first connecting block (5) and a first supporting block (6), the inner wall of the circumference of the first connecting block (5) is provided with a circle of internal threads, and the first supporting block (6) and the first connecting block (5) are integrally formed, the internal threads on the first connecting block (5) are screwed to each other with the external threads on the impact head (3), and one end face of the first supporting block (6) is connected to one end face of the impact head (3) The punch body (1) is divided into a first body (8) and a second body (9), a circle of external threads is provided on the circumferential surface of the second body (9), and the external threads on the second body (9) are located on the side of the second body (9) close to the first body (8), the second clamping ring (7) is divided into a second connecting block (10) and a second supporting block (11), a circle of internal threads is provided on the circumferential inner wall of the second connecting block (10), and the internal threads are screwed with the external threads on the second body (9), the second supporting block (11) and the second connecting block (10) are integrally formed, and two third clamping rings (12) are sleeved on the circumferential surface of the second body (9) between the first clamping ring (4) and the second clamping ring (7).
2. A snap ring punch according to claim 1, characterized in that: An annular inclined surface (13) is provided on the edge of a side of the impact head (3) away from the punch body, and the inclined surface (13) is lower than the height of the first clamping ring (4).
3. A snap ring punch according to claim 1, characterized in that: It also includes four locking bolts (15), and the circumferential outer wall of the second connecting block (10) is provided with four evenly distributed first threaded holes (16), and the four locking bolts (15) are respectively threadedly inserted into the first threaded holes (16) in a one-to-one correspondence, and the bottoms of the four locking bolts (15) are in contact with the second body (9).
4. The snap ring punch according to claim 1, characterized in that: The third clamping ring (12) is made of copper.
5. The snap ring punch according to claim 1, characterized in that: An inner wall of the punch body (1) close to the bottom is provided with an internal thread which is threadedly connected to the injection rod.
6. The snap ring punch according to claim 1, characterized in that: The third clamping ring (12) is provided with a gap for increasing the expansion coefficient of the third clamping ring (12).