Stamping dies used for necking of pipe fittings.
By using a split stamping die design, the demolding module is separated from the stamping module by hydraulic and pneumatic drives, which solves the problem of difficult demolding after the pipe fittings are formed, and improves production efficiency and product quality.
Patent Information
- Application Number
- CN202522659076.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-16
AI Technical Summary
During the necking process of pipe fittings, it is difficult to demold after molding, leading to product quality problems and low production efficiency.
The design adopts a split stamping die, and the detachment module is separated from the stamping module by hydraulic cylinder and air cylinder to achieve quick removal of the pipe fitting.
This facilitates the removal of pipe fittings after molding, improves production efficiency, and avoids product quality problems.
Smart Images
Figure CN224938960U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping die technology for pipe fittings, and specifically to stamping dies used for necking processing of pipe fittings. Background Technology
[0002] In the field of machining, the tube body is stamped and necked, and the tube is formed by stamping to achieve the required shape.
[0003] Currently, in the production process of stamped parts, the head is necked before being stamped in the stamping die, which makes it difficult to demold the formed tube. Force is generated inside the die, and forced demolding will cause product quality problems and greatly delay production efficiency. Therefore, we have proposed a stamping die for the necking process of tube body. Utility Model Content
[0004] The purpose of this utility model is to provide a stamping die for the necking process of pipe fittings. The stamping module is set in a split manner. After the stamped pipe fitting is stamped and formed inside the stamping module, it is separated and opened on the top of the processing table, which facilitates the removal of the formed pipe fitting.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A stamping die for necking tube fittings includes a processing table. The processing table has two sets of frames symmetrically mounted on its top sides. A support frame, U-shaped in design, is fixedly connected to the top of each set of frames. A first hydraulic cylinder is mounted on the top of the support frame, with its piston rod end aligned with the center of the stamping head. A second hydraulic cylinder is mounted on the middle of the outer side of each set of frames, with its piston rod end fixedly connected to a stamping module. Two sets of stamping modules are symmetrically arranged, each with a cavity groove on its inner wall. A tube fitting is fitted into each cavity groove. A lifting groove is located at the center of the top of the processing table, with a release module fitted inside. A cylinder is mounted at the bottom of the processing table, vertically aligned with the lifting groove, with its piston rod end penetrating the bottom of the lifting groove and fixed to the bottom of the release module.
[0007] Preferably, the tube is clamped between two sets of stamping modules, with the top of the tube directly below the stamping head and the bottom of the tube directly above the release module.
[0008] Preferably, the top of the detachment module has a neck groove in an annular shape, the bottom of the pipe fitting is placed against the top of the detachment module, and the pipe wall of the pipe fitting is pressed into the interior of the neck groove.
[0009] Preferably, two sets of rod grooves are symmetrically opened on both sides of the bottom end of the outer wall of the stamping module, and two sets of transverse sliding rods are symmetrically fixedly installed on both sides of the inner wall of the frame. The transverse sliding rods are connected to the rod grooves with matching hole diameters, and the transverse sliding rods slide based on the inside of the rod grooves.
[0010] Preferably, four sets of vertical sliding rods are fixedly installed at the four corners of the bottom of the detachment module, and the four sets of vertical sliding rods all penetrate the bottom of the lifting groove and form a sliding connection mechanism.
[0011] Preferably, a controller is installed on the front side of the processing table. The controller is connected to the first hydraulic cylinder, the second hydraulic cylinder, and the pneumatic cylinder by means of wire connection, and the signal transmitting end of the controller is connected to the signal receiving end of the first hydraulic cylinder, the second hydraulic cylinder, and the pneumatic cylinder respectively, forming an electrical connection.
[0012] The technical effects and advantages provided by this utility model are as follows:
[0013] 1. The stamping module is set up in a split manner. After the stamping tube is stamped inside the stamping module, it is separated and opened on the top of the processing table, which facilitates the removal of the tube after it is formed.
[0014] 2. A release module is provided at the top of the processing table. The release module can drive the formed tube to detach from the inside of the two sets of stamping modules and drive the formed tube to a position higher than the top surface of the stamping modules, so as to facilitate the collection and processing of the formed tube. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the unfolded structure of the tubular component after stamping in this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the processing table in this utility model;
[0019] Figure 4 This is a schematic diagram of the stamping module in this utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Processing table; 2. Machine frame; 3. Support frame; 4. First hydraulic cylinder; 5. Punching head; 6. Second hydraulic cylinder; 7. Horizontal slide bar; 8. Punching module; 9. Pipe fitting; 10. Controller; 11. Lifting groove; 12. Detachment module; 13. Pipe neck groove; 14. Vertical slide bar; 15. Cavity groove; 16. Cylinder; 17. Rod groove. Detailed Implementation
[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0023] This utility model discloses a stamping die for necking the body of a pipe fitting.
[0024] This utility model provides, for example Figure 1-4 The stamping die shown is used for necking of pipe fittings. It includes a processing table 1. Two sets of frames 2 are symmetrically mounted on both sides of the top of the processing table 1. Support frames 3 are fixedly connected to the top of the two sets of frames 2, and the support frames 3 are U-shaped. A first hydraulic cylinder 4 is mounted on the top of the support frame 3, and the end of the piston rod of the first hydraulic cylinder 4 is aligned with the center of the top of the stamping head 5. A second hydraulic cylinder 6 is mounted in the middle of the outer side of the two sets of frames 2, and a stamping module 8 is fixedly connected to the end of the piston rod of the second hydraulic cylinder 6. Two sets of stamping modules 8 are symmetrically arranged, and each set of stamping modules 8 has a cavity groove 15 on its inner wall. The cavity groove 15 contains a stamping-adapted pipe fitting 9. A lifting groove 11 is provided at the center of the top of the processing table 1. A release module 12 is adapted to be installed inside the lifting groove 11. A cylinder 16 is installed at the bottom of the processing table 1, which is adapted to the vertical position of the lifting groove 11. The piston rod end of the cylinder 16 passes through the bottom of the lifting groove 11 and is fixed to the bottom of the release module 12. The stamping module 8 is set in a split manner. After the stamping pipe fitting is stamped and formed inside the stamping module 8, it is difficult to quickly remove the stamping pipe fitting 9 by traditional stamping. The stamping module 8 can be separated and opened based on the top of the processing table 1, which greatly facilitates the removal of the pipe fitting 9 after it is formed.
[0025] like Figure 1-4 As shown, the tube 9 is clamped between two sets of stamping modules 8. The top of the tube 9 is located directly below the stamping head 5, and the bottom of the tube 9 is located directly above the stripping module 12. When the stamping head 5 is working, it will punch down the top of the tube 9 so that the shape of the tube 9 meets the requirements.
[0026] like Figure 1-4As shown, the top of the stripping module 12 is provided with a neck groove 13 in an annular shape. The bottom of the tube 9 is placed against the top of the stripping module 12, and the tube wall of the tube 9 is pressed into the interior of the neck groove 13. When the tube 9 is under pressure, the tube 9 will become the shape inside the cavity groove 15, and the opening of the tube 9 will form the shape of the neck groove 13, thus obtaining the stamped finished product.
[0027] like Figure 1-4 As shown, two sets of rod grooves 17 are symmetrically opened on both sides of the bottom of the outer wall of the stamping module 8, and two sets of transverse slide rods 7 are symmetrically fixed on both sides of the inner wall of the frame 2. The transverse slide rods 7 are matched with the rod grooves 17 with a suitable aperture, and the transverse slide rods 7 slide based on the inside of the rod grooves 17. During the opening and closing of the stamping module 8, it will slide on the transverse slide rods 7 to ensure the stability of the two sets of stamping modules 8 when closing and opening.
[0028] like Figure 1-4 As shown, four sets of vertical sliding rods 14 are fixedly installed at the four corners of the bottom of the detachment module 12. The four sets of vertical sliding rods 14 all penetrate the bottom of the lifting groove 11 and form a sliding connection mechanism. When the detachment module 12 is raised or lowered, the four sets of vertical sliding rods 14 will move with the detachment module 12. The four sets of vertical sliding rods 14 will slide based on the inside of the lifting groove 11 to ensure the stability of the detachment module 12's raising and lowering.
[0029] like Figure 1-4 As shown, a controller 10 is installed on the front side of the processing table 1. The controller 10 is connected to the first hydraulic cylinder 4, the second hydraulic cylinder 6 and the pneumatic cylinder 16 by means of wire connection. The signal transmitting end of the controller 10 is connected to the signal receiving end of the first hydraulic cylinder 4, the second hydraulic cylinder 6 and the pneumatic cylinder 16 respectively, forming an electrical connection.
[0030] The working process of this utility model:
[0031] The tube 9 to be stamped is placed into the cavity 15 between the two stamping modules 8. The bottom of the tube 9 will fit snugly against the top of the release module 12. After placement, the controller 10 controls the first hydraulic cylinder 4 and the second hydraulic cylinder 6 to work. The piston rod of the first hydraulic cylinder 4 will drive the stamping head 5 to press down into the inside of the tube 9. At this time, the stamping head 5 will drive the tube 9 to stamp and form the shape of the inner wall of the cavity 15. The bottom of the tube 9 will be stamped and formed with the tube neck groove 13 opened at the top of the release module 12. At this time, the tube 9 will complete the stamping and forming effect. The controller 10 will then control the first hydraulic cylinder 4 to press down into the cavity 15 between the two stamping modules 8. The pressure cylinder 4 and the second hydraulic cylinder 6 work. The first hydraulic cylinder 4 drives the stamping head 5 to separate from the tube 9. The second hydraulic cylinder 6 drives the stamping module 8 to slide open based on two sets of horizontal slide bars 7. Finally, the controller 10 controls the cylinder 16 inside the processing table 1 to work. The cylinder 16 pushes the demolding module 12 to rise and fall based on the inside of the lifting groove 11. During the rising and falling process, the demolding module 12 will slide on four sets of vertical slide bars 14 to ensure the stability of demolding. Finally, the demolding module 12 will drive the formed tube 9 to move out, which is conducive to the discharge and collection of the formed stamped tube 9. The design is simple and practical.
[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A punch die for necking down a tube body of a pipe, comprising a processing table (1), characterized in that, Two sets of frames (2) are symmetrically installed on both sides of the top of the processing table (1). The top of the two sets of frames (2) is fixedly connected to a support frame (3), and the support frame (3) is U-shaped. A first hydraulic cylinder (4) is installed on the top of the support frame (3), and the end of the piston rod of the first hydraulic cylinder (4) is connected to the center of the top of the stamping head (5). A second hydraulic cylinder (6) is installed in the middle of the outer side of the two sets of frames (2), and the end of the piston rod of the second hydraulic cylinder (6) is fixedly connected to a stamping module (8). The stamping module (8) is symmetrical. Two sets are provided, and the inner walls of the two sets of stamping modules (8) are provided with cavity grooves (15). The two sets of cavity grooves (15) are filled with stamping-adapted pipe fittings (9). A lifting groove (11) is provided at the center of the top of the processing table (1). A release module (12) is adapted to be provided inside the lifting groove (11). A cylinder (16) is installed at the bottom of the processing table (1) at the vertical position of the lifting groove (11). The piston rod end of the cylinder (16) passes through the bottom of the lifting groove (11) and is fixed to the bottom of the release module (12).
2. The stamping die for necking tube bodies according to claim 1, characterized in that, The tube (9) is held between the two sets of the stamping modules (8), with the top of the tube (9) located directly below the stamping head (5) and the bottom of the tube (9) located directly above the stripping module (12).
3. The stamping die for necking tube bodies according to claim 1, characterized in that, The top of the detachment module (12) is provided with a neck groove (13) in an annular shape. The bottom of the pipe (9) is placed against the top of the detachment module (12), and the pipe wall of the pipe (9) is pressed into the interior of the neck groove (13).
4. The stamping die for necking tube bodies according to claim 1, characterized in that, The bottom of the outer wall of the stamping module (8) has two sets of rod grooves (17) symmetrically opened on both sides. The inner wall of the frame (2) has two sets of transverse slide rods (7) symmetrically fixed on both sides. The transverse slide rods (7) are connected to the rod grooves (17) with matching hole diameters, and the transverse slide rods (7) slide based on the inside of the rod grooves (17).
5. The stamping die for necking tube bodies according to claim 1, characterized in that, Four sets of vertical slide rods (14) are fixedly installed at the four corners of the bottom of the detachment module (12). The four sets of vertical slide rods (14) all penetrate the bottom of the lifting groove (11) and form a sliding connection mechanism.
6. The stamping die for necking tube bodies according to claim 1, characterized in that, A controller (10) is installed on the front side of the processing table (1). The controller (10) is connected to the first hydraulic cylinder (4), the second hydraulic cylinder (6) and the air cylinder (16) by means of wire connection. The signal transmitting end of the controller (10) is connected to the signal receiving end of the first hydraulic cylinder (4), the second hydraulic cylinder (6) and the air cylinder (16) respectively, forming an electrical connection.