A cylindrical shell tail punching mechanism
By using a separate middle plate and top seat structure, combined with an adjustable spring force device, the problem of high processing and maintenance costs of traditional cylindrical shell tail punching mechanisms is solved. This enables flexible spring force adjustment and efficient maintenance, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO OUTACPLEX MASCH TECH CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-03
AI Technical Summary
The traditional cylindrical shell tail punching mechanism has a fixed structure, resulting in high processing and maintenance costs. The spring force cannot be adjusted, which affects production efficiency and product quality.
It adopts a separate middle plate and top seat structure, combined with an adjustable spring force device, and achieves flexible adjustment of spring force and convenient maintenance through layered installation and threaded plug adjustment.
It reduces processing and maintenance costs, improves maintenance efficiency, adapts to the punching force requirements of different products, and enhances production efficiency and product quality.
Smart Images

Figure CN224444286U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cylindrical shell processing technology, and in particular to a punching mechanism for the tail of a cylindrical shell. Background Technology
[0002] In the automated manufacturing of cylindrical shells (such as electronic component housings and hardware parts), tail punching is a critical process that directly affects the product's assembly compatibility and functional integrity. As the industry's requirements for product precision, production efficiency, and ease of maintenance increase, traditional punching mechanisms, due to their rigid structure, high maintenance costs, and difficulty in force control adjustment, have gradually become bottlenecks in production capacity and quality, driving the development of new punching mechanisms.
[0003] The existing cylindrical shell tail punching mechanism has the punching plate top seat integrated with the plate, which has high processing costs and difficulty, and the maintenance costs are also high. At the same time, the bottom top rod spring oil base is fixed, and the spring force cannot be adjusted. Utility Model Content
[0004] This utility model mainly provides a cylindrical shell tail punching mechanism that is convenient for processing, maintenance and adjustment of spring force.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cylindrical shell tail punching mechanism, comprising: a base, a bottom plate mounted on the top of the base, a middle plate mounted on the top of the bottom plate, a circular hole opened on the top of the middle plate near the center, a top seat embedded inside the circular hole, a top cover fitted on the top of the top seat, a top seat fitted on the top of the top cover, the top seat being installed and connected to the middle plate, punching pins symmetrically inserted and installed on the top of the top seat, recesses symmetrically opened on the bottom of the base, and circular grooves symmetrically opened on the top of the base, each circular groove having a convex sleeve slidably embedded inside, the top of each convex sleeve penetrating the middle plate and the top seat and slidably connected thereto, a top rod embedded and slidably connected inside each convex sleeve, the top of the top rod abutting the bottom of the top cover, the bottom of each top rod penetrating the inner wall of the bottom of the circular groove and extending into the recess, a bottom block fixedly connected to the bottom of the top rod, threaded plugs embedded and threadedly connected inside each recess, and a spring provided between the bottom block and the threaded plug.
[0006] Preferably, a positioning screw is slidably connected through one side wall of the middle plate near the center. One end of the positioning screw is embedded in one side wall of the top seat and threadedly connected thereto. With the above arrangement, the positioning screw can be used to fix the top seat in place.
[0007] Preferably, the recessed groove and the circular groove are aligned with each other. With the above arrangement, the push rod can be inserted from the recessed groove into the through circular groove.
[0008] Preferably, the diameter of the base block is adapted to the diameter of the groove. With the above arrangement, the base block can be completely embedded in the groove. With both ends of the spring fixedly connected to the base block and the threaded plug, the two ends of the spring can be fixed.
[0009] Preferably, the surfaces of the base, bottom plate, middle plate and top seat are all provided with mounting holes. With the above arrangement, the base, bottom plate, middle plate and top seat can be installed in layers.
[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0011] 1. In this utility model, the separate "middle plate and top plate" structure reduces the complexity of processing and the cost of customization. At the same time, in the later maintenance, only the top plate and the threaded plug need to be disassembled to repair and replace the top plate, the top rod and the spring, which can improve the maintenance efficiency and thus significantly reduce the cost of spare parts and downtime.
[0012] 2. In this utility model, the threaded plug rotates inside the groove, which can adjust the distance between the threaded plug and the bottom block, thereby adjusting the spring compression and adapting to the punching force requirements of different products. Attached Figure Description
[0013] Figure 1 This utility model provides an overall structural front view of a cylindrical shell tail punching mechanism;
[0014] Figure 2 The present invention provides a rear view of the overall structure of a cylindrical shell tail punching mechanism;
[0015] Figure 3 This utility model provides an overall structural plan view of a cylindrical shell tail punching mechanism;
[0016] Figure 4 A cross-sectional view along direction A is provided for the overall structure of the cylindrical shell tail punching mechanism of this utility model.
[0017] Legend: 1. Base; 2. Base plate; 3. Middle plate; 4. Round hole; 5. Top seat; 6. Top cover; 7. Top seat; 8. Punch pin; 9. Positioning screw; 10. Insert groove; 11. Round groove; 12. Convex sleeve; 13. Top rod; 14. Bottom block; 15. Spring; 16. Threaded plug. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Please see Figures 1-4 This utility model provides a technical solution: a cylindrical shell tail punching mechanism, comprising: a base 1, a base plate 2 mounted on the top of the base 1, a middle plate 3 mounted on the top of the base plate 2, a circular hole 4 opened on the top of the middle plate 3 near its center, a top seat 5 embedded inside the circular hole 4, a top cover 6 fitted on the top of the top seat 5, a top seat 7 fitted on the top of the top cover 6, the top seat 7 being installed and connected to the middle plate 3, punching pins 8 symmetrically inserted and installed on the top of the top seat 5, symmetrical grooves 10 opened on the bottom of the base 1, symmetrical circular grooves 11 opened on the top of the base 1, each circular groove 11 having a slidably connected convex sleeve 12 embedded inside, the top of each convex sleeve 12 penetrating the middle plate 3 and the top seat 5 and slidably connected thereto, each convex sleeve 12 having a slidably connected and inserted slidably connected jack rod 13 embedded inside and slidably connected to the top of the top cover 6. The bottom of the push rod 13 penetrates the inner wall of the bottom of the circular groove 11 and extends into the groove 10. The bottom of the push rod 13 is fixedly connected to the bottom block 14. The groove 10 is fitted with threaded plugs 16. A spring 15 is provided between the bottom block 14 and the threaded plug 16. With the above arrangement, the push rod 13 can be inserted into the convex sleeve 12 that penetrates the circular groove 11 from the groove 10. At this time, the spring 15 can be inserted and the threaded plug 16 can be threaded. When the threaded plug 16 is screwed into the groove 10, the compression of the spring 15 is adjusted. The product is pressed in from the hole of the top seat 7. The punching needle 8 punches downward. The top cover 6 is pressed down by pressure. The push rod 13 compresses the spring 15 at the same time, storing the reset energy. The punching needle 8 moves upward, and the elastic potential energy of the spring 15 is released, pushing the push rod 13 and the top cover 6 upward, completing the mechanism reset effect.
[0021] like Figure 2 and Figure 3 As shown, a positioning screw 9 is slidably connected through one side wall of the middle plate 3 near the center. One end of the positioning screw 9 is embedded in one side wall of the top seat 5 and threadedly connected thereto. Through the above arrangement, the positioning screw 9 can be used to fix the top seat 5 in place.
[0022] like Figure 4As shown, the groove 10 and the circular groove 11 are aligned with each other. With the above arrangement, the push rod 13 can be inserted from the groove 10 into the through circular groove 11.
[0023] like Figure 4 As shown, the diameter of the base block 14 is adapted to the diameter of the groove 10. Through the above arrangement, the base block 14 can be completely embedded in the groove 10. Both ends of the spring 15 are fixedly connected to the base block 14 and the threaded plug 16. Through the above arrangement, the two ends of the spring 15 can be fixed.
[0024] like Figure 1 and Figure 2 As shown, mounting holes are provided on the surfaces of the base 1, bottom plate 2, middle plate 3 and top plate 7. Through the above arrangement, the base 1, bottom plate 2, middle plate 3 and top plate 7 can be installed in layers.
[0025] The device is used and operates as follows: The base 1, bottom plate 2, middle plate 3, and top seat 7 are installed in layers. The top seat 5 is embedded in the middle plate 3 through the round hole 4 and reinforced by the positioning screw 9, realizing a separate structure of "middle plate 3 and top seat 5" for easy maintenance and replacement. The convex sleeve 12 and the top rod 13 form the ejection assembly, which is inserted into the middle plate 3 and the top seat 5. The bottom groove 10 of the base 1 contains a spring 15 and a bottom block 14. The threaded plug 16 is screwed into the groove 10. The compression of the spring 15 is adjusted, and the product is pressed in through the hole in the top seat 7. The punching needle 8 punches downward, and the top cover 6 is pressed down under pressure. The top rod 13 compresses the spring 15 synchronously, storing the reset energy. The punching needle 8 moves upward, and the elastic potential energy of the spring 15 is released, pushing the top rod 13 and the top cover 6 upward to complete the mechanism reset and enter the next process. Rotating the threaded plug 16 changes the compression length of the spring 15, precisely controlling the ejection or reset force to adapt to different product requirements.
[0026] 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 other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A cylindrical shell tail punching mechanism characterized by, include: A base (1) is provided, with a base plate (2) installed on the top of the base (1). A middle plate (3) is installed on the top of the base plate (2). A round hole (4) is provided on the top of the middle plate (3) near the center. A top seat (5) is embedded inside the round hole (4). A top cover (6) is fitted on the top of the top seat (5). A top seat (7) is fitted on the top of the top cover (6). The top seat (7) is installed and connected to the middle plate (3). Punching pins (8) are symmetrically inserted and installed on the top of the top seat (5). A groove (10) is symmetrically provided on the bottom of the base (1). A round groove (11) is symmetrically provided on the top of the base (1). 1) Each of the components is internally embedded with a convex sleeve (12) that is slidably connected. The top of each convex sleeve (12) passes through the middle plate (3) and the top seat (5) and is slidably connected thereto. Each of the convex sleeves (12) is internally embedded with a top rod (13) that is slidably connected thereto. The top of each top rod (13) is in contact with the bottom of the top cover (6). The bottom of each top rod (13) passes through the inner wall of the bottom of the circular groove (11) and extends into the groove (10). The bottom of each top rod (13) is fixedly connected with a bottom block (14). Each of the grooves (10) is internally embedded with a threaded plug (16) that is threadedly connected thereto. A spring (15) is provided between the bottom block (14) and the threaded plug (16).
2. A cylindrical shell tail punching mechanism according to claim 1, characterized in that: A positioning screw (9) is slidably connected through one side wall of the middle plate (3) and near the center. One end of the positioning screw (9) is embedded in one side wall of the top seat (5) and threadedly connected thereto.
3. A cylindrical shell tail punching mechanism according to claim 1, characterized in that: The groove (10) and the circular groove (11) are aligned with each other.
4. A cylindrical shell tail punching mechanism according to claim 1, characterized in that: The diameter of the base block (14) is adapted to the diameter of the groove (10), and both ends of the spring (15) are fixedly connected to the base block (14) and the threaded plug (16).
5. A cylindrical shell tail punching mechanism according to claim 1, characterized in that: Mounting holes are provided on the surfaces of the base (1), bottom plate (2), middle plate (3) and top seat (7).