A spring-like impact device
By designing a grip sleeve to prevent finger contact and a detachable punch rod structure, the problems of the hammer deviating and getting stuck in the flesh during striking are solved, achieving the effects of convenient replacement and easy carrying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WANFENG MERIDIAN LIGHTWEIGHT TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-07
AI Technical Summary
Existing punching devices are prone to deviation during hammering, leading to hand injuries. Furthermore, the punch rod required in the structural components is exposed. In devices that fix the hand grip, the exposed punch rod can easily cause fingers to get stuck on the hand grip. The punch rod tip needs to be replaced or ground after it becomes dull, increasing costs and space usage.
A spring punch device was designed, which uses a grip sleeve to prevent fingers from contacting the spring, a sliding sleeve and a limiting structure to prevent flesh from getting stuck, and the punch rod is a detachable structure for easy replacement and carrying.
It effectively prevents fingers from getting stuck, reduces replacement costs, minimizes space occupation, and is easy to carry and use.
Smart Images
Figure CN224464668U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the field of hardware processing equipment technology, and more specifically to a spring punch device. Background technology:
[0002] In existing magnesium-aluminum alloy parts and other metal structural parts, before processing at the corresponding position, a punch is needed to punch holes at the processing position to form punch holes, so that subsequent drilling will not be off-center.
[0003] In existing punching structures, the punching points for machining metal parts are generally made by holding the punch rod and striking it directly with a hammer. The main drawback of this method is that the hammer is prone to deviating during the striking process, causing the hammer to hit the worker's hand and cause injury.
[0004] Therefore, a steel plate punching device with Chinese patent authorization announcement number CN219275751U includes a punch rod, a fixed sleeve, a sliding sleeve, a sliding hand plate, a spring, and a fixed hand plate. During operation, the punching device is placed on the designated point on the steel plate. Then, by holding the sliding hand plate, the sliding sleeve is lifted, causing the spring to rise. The spring and the fixed hand plate are pressed together until the spring is fully compressed. Then, the sliding hand plate is released, the spring is released, and the sliding sleeve strikes the fixed sleeve downwards. The force of the fixed sleeve causes the punch rod to strike the steel plate, forming a punch hole. This process is repeated until all punch holes on the steel plate are formed.
[0005] In this structure, the spring is still exposed. When holding the hand on the fixed handrail, if the finger is inserted into the spring, it will cause the finger to get stuck when the spring is compressed. At the same time, the punch rod is a single piece, and the tip of the punch rod will become dull after a certain period of use, requiring replacement or re-grinding. Re-grinding requires grinding equipment. If there is no grinding equipment available, only a new punching device can be replaced, which means that multiple punching devices are required, making the manufacturing cost high. Moreover, multiple punching devices increase the space occupied and are inconvenient to carry. Utility model content:
[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a spring punch device. Its gripping sleeve can prevent fingers from contacting the spring, making it less likely to get stuck in the skin. Moreover, its punch is a detachable structure, which is convenient for disassembly and replacement, has low replacement cost, and is also easy to carry.
[0007] The solution of this utility model to the aforementioned technical problem is:
[0008] A spring-loaded punch device includes a holding sleeve and a main punch rod. The main punch rod is inserted into the holding sleeve. A radially extending annular portion is formed on the outer side wall of the bottom end of the main punch rod. A top limiting head with an outer diameter larger than the main punch rod is fixed to the top end of the main punch rod. A spring and a sliding sleeve are inserted into the main punch rod. The bottom end of the spring applies force to the top surface of the sliding sleeve, the bottom end surface of the sliding sleeve presses against the top surface of the annular portion, and the top end of the spring applies force to the bottom surface of the top limiting head.
[0009] Vertical guide grooves are formed in the middle to lower part of both sides of the grip sleeve. Horizontal actuating blocks are fixed on the left and right side walls of the sliding sleeve. The horizontal actuating blocks are inserted into the corresponding vertical guide grooves. The outer end of the horizontal actuating block extends out of the outer side wall of the grip sleeve, and the bottom surface of the horizontal actuating block is close to the bottom surface of the corresponding vertical guide groove.
[0010] Upper limit blocks are fixed on the left and right side walls of the top limiting head. The upper limit blocks are inserted into the upper vertical slots formed on the left or right side wall of the upper part of the gripping sleeve. The front and rear side walls of the upper limit blocks are close to the front and rear inner side walls of the corresponding upper vertical slots.
[0011] The bottom surface of the main punch rod body has an upwardly extending vertical threaded hole formed in the middle, and the top surface of the punch has a threaded rod part formed in the middle. The threaded rod part is threaded into the vertical threaded hole, and the top surface of the punch presses against the bottom surface of the main punch rod body.
[0012] The bottom of the punch is a sharp point.
[0013] The outstanding effect of this utility model is:
[0014] Compared with existing technologies, its grip sleeve can prevent fingers from contacting the spring, making it less likely to get stuck. Moreover, its punch has a detachable structure, which is convenient for disassembly and replacement. The replacement cost is low, and it is also easy to carry. Multiple punches can be prepared in the toolbox. When the sharp end of the punch connected to the main punch rod becomes blunt, it can be disassembled and replaced. Replacement is convenient, and multiple punches are small in size, occupy little space, and are easy to carry. Attached image description:
[0015] Figure 1 This is a partial structural schematic diagram of the present invention;
[0016] Figure 2 This is another structural schematic diagram of the present invention;
[0017] Figure 3 yes Figure 1 A partial structural diagram of the main punch body (without the lateral actuation block and upper limit block installed). Detailed implementation method:
[0018] Example 1, see as follows Figure 1 and Figure 3 As shown, a spring punch device includes a holding sleeve 10 and a main punch rod 20. The main punch rod 20 is inserted into the holding sleeve 10. A radially extending annular portion 21 is formed on the outer wall of the bottom end of the main punch rod 20. A top limiting head 22 with an outer diameter larger than that of the main punch rod 20 is welded and fixed to the top end of the main punch rod 20. A spring 1 and a sliding sleeve 30 are inserted into the main punch rod 20. The bottom end of the spring 1 applies force to the top surface of the sliding sleeve 30, and the bottom end surface of the sliding sleeve 30 presses against the top surface of the annular portion 21. The top end of the spring 1 applies force to the bottom surface of the top limiting head 22. The outer diameter of the sliding sleeve 30 is smaller than the outer diameter of the annular portion 21.
[0019] Vertical guide grooves 11 are formed on the middle to lower part of both sides of the grip sleeve 10. Horizontal actuating blocks 31 are fixed on the left and right side walls of the sliding sleeve 30. The horizontal actuating blocks 31 are inserted into the corresponding vertical guide grooves 11. The outer end of the horizontal actuating block 31 extends out of the outer side wall of the grip sleeve 10, and the bottom surface of the horizontal actuating block 31 is close to the bottom surface of the corresponding vertical guide groove 11.
[0020] Furthermore, the bottom surface of the main punch 20 has an upwardly extending vertical threaded hole 24 formed in the middle, and the top surface of the punch 40 has a threaded rod portion 41 formed in the middle. The threaded rod portion 41 is threaded into the vertical threaded hole 24, and the top surface of the punch 40 presses against the bottom surface of the main punch 20. Multiple vertical protrusions extending along the axis are also formed on the outer side wall of the punch 40 to facilitate the rotation of the punch 40.
[0021] The bottom of the punch 40 is a sharp point.
[0022] Furthermore, the inner end of the transverse actuating block 31 is welded and fixed to the outer wall of the sliding sleeve 30.
[0023] The lateral actuating block 31 is a laterally extending cylinder, with its front and rear sidewalls close to the front and rear inner sidewalls of the corresponding vertical guide slot 11.
[0024] The upper limit block 23 is fixed on the left and right side walls of the top limiting head 22. The upper limit block 23 is inserted into the upper vertical slot 12 formed on the upper left or right side wall of the gripping sleeve 10. The front and rear side walls of the upper limit block 23 are close to the front and rear inner side walls of the corresponding upper vertical slot 12.
[0025] The inner end of the upper limit block 23 is welded and fixed to the left or right side wall of the top limit head 22. The outer side wall of the top limit head 22 is close to the upper inner side wall of the grip sleeve 10. The top end of the top limit head 22 extends out of the top end of the grip sleeve 10. The outer side wall of the annular part 21 is close to the lower inner side wall of the grip sleeve 10.
[0026] The bottom surfaces of the left and right side walls of the grip sleeve 10 in this embodiment are formed with upwardly extending side through grooves. When in use, the bottom surface of the grip sleeve 10 is pressed against the top surface of the component that needs to be punched. At the same time, the sharp end of the punch 40 is pressed against the position where the punch hole needs to be punched, which can be viewed through the side through groove.
[0027] Then, hold the gripping sleeve 10 with one hand and lift the two horizontal actuating blocks 31 with the other hand, which will lift the sliding sleeve 30 and compress the spring 1 until the top surface of the horizontal actuating block 31 rests against the top surface of the vertical guide groove 11 or until the spring 1 can no longer be compressed. Then, release the hand, and through the elastic recovery of the spring 1, push the sliding sleeve 30 down quickly, which presses against the top surface of the annular part 21, thereby impacting the annular part 21. This causes the annular part 21 and the main punch rod 20 to have a downward impact, so that the sharp end of the punch 40 impacts the top surface of the part, forming a punch hole and completing the processing. During the operation, the hand will not come into contact with the spring 1, so that the hand will not be pinched by the spring 1.
[0028] Meanwhile, a threaded rod portion 41 is formed in the middle of the top surface of the punch 40. The threaded rod portion 41 is threaded into the vertical threaded hole 24. The top surface of the punch 40 presses against the bottom surface of the main punch rod body 20. Therefore, when the sharp end of the punch 40 becomes blunt, it can be directly disassembled and replaced. Thus, multiple punches 40 can be prepared in the toolbox. When the sharp section of the punch 40 connected to the main punch rod body 20 becomes blunt, it can be disassembled and replaced. Replacement is convenient, and multiple punches 40 are small in size, occupy little space, and are easy to carry.
[0029] Example 2, as Figure 2 As shown, the inner end of the transverse actuating block 31 is formed with a screw portion, which is screwed into a screw hole formed on the outer side wall of the sliding sleeve 30.
[0030] The inner end of the upper limit block 23 is formed with a threaded part, which is threaded into a threaded hole formed on the left or right side wall of the top limit head 22.
[0031] The rest is the same as in Embodiment 1. This structure allows the lateral toggle block 31 and the upper limit block 23 to be replaced as needed.
[0032] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.
Claims
1. A spring-loaded punch device, comprising a gripping sleeve (10) and a main punch rod (20), characterized in that: The main sample punch (20) is inserted into the holding sleeve (10). A radially extending annular portion (21) is formed on the outer side wall of the bottom end of the main sample punch (20). A top limiting head (22) with an outer diameter larger than that of the main sample punch (20) is fixed at the top end of the main sample punch (20). The spring (1) and the sliding sleeve (30) are inserted into the main sample punch (20). The bottom end of the spring (1) is pressed against the top surface of the sliding sleeve (30). The bottom end of the sliding sleeve (30) is pressed against the top surface of the annular portion (21). The top end of the spring (1) is pressed against the bottom surface of the top limiting head (22). Vertical guide grooves (11) are formed on the middle to lower part of both sides of the grip sleeve (10). Horizontal actuating blocks (31) are fixed on the left and right side walls of the sliding sleeve (30). The horizontal actuating blocks (31) are inserted into the corresponding vertical guide grooves (11). The outer end of the horizontal actuating block (31) extends out of the outer side wall of the grip sleeve (10). The bottom surface of the horizontal actuating block (31) is close to the bottom surface of the corresponding vertical guide groove (11).
2. The spring punch device according to claim 1, characterized in that: The inner end of the transverse actuating block (31) is welded and fixed to the outer wall of the sliding sleeve (30).
3. The spring punch device according to claim 1, characterized in that: The inner end of the transverse actuating block (31) is formed with a screw portion, which is screwed into a screw hole formed on the outer side wall of the sliding sleeve (30).
4. The spring punch device according to claim 1, characterized in that: The lateral actuating block (31) is a laterally extending cylinder, with its front and rear sidewalls close to the front and rear inner sidewalls of the corresponding vertical guide slot (11).
5. A spring punch device according to claim 1, characterized in that: The upper limit block (23) is fixed on the left and right side walls of the top limiting head (22). The upper limit block (23) is inserted into the upper vertical slot (12) formed on the upper left or right side wall of the gripping sleeve (10). The front and rear side walls of the upper limit block (23) are close to the front and rear inner side walls of the corresponding upper vertical slot (12).
6. A spring punch device according to claim 5, characterized in that: The inner end of the upper limit block (23) is welded and fixed to the left or right side wall of the top limit head (22), or the inner end of the upper limit block (23) is formed with a threaded part, which is threaded into the threaded hole formed on the left or right side wall of the top limit head (22).
7. A spring punch device according to claim 1, characterized in that: The outer side wall of the top limiting head (22) is close to the upper inner side wall of the grip sleeve (10), the top end of the top limiting head (22) extends out of the top end of the grip sleeve (10), and the outer side wall of the annular part (21) is close to the lower inner side wall of the grip sleeve (10).
8. A spring punch device according to claim 1, characterized in that: The bottom surface of the main punch rod body (20) is formed with an upwardly extending vertical screw hole (24), and the top surface of the punch (40) is formed with a screw rod part (41). The screw rod part (41) is screwed into the vertical screw hole (24), and the top surface of the punch (40) presses against the bottom surface of the main punch rod body (20). The bottom of the punch (40) is a sharp end.