Gasket inner hole one-time punch forming device

Abstract

The utility model discloses a gasket inner hole one-time punch forming device which comprises a base and an n-shaped installation frame installed on the base, a bearing table is installed in the center of the base, a centering positioning mechanism is arranged on the bearing table, and a punch forming mechanism is arranged at the bottom of the n-shaped installation frame. The punch forming mechanism comprises a hydraulic cylinder, a lifting plate, an outer circular top die, an inner hole top die, a punching groove, a fixing ring, an inner hole bottom die and an outer circular bottom die. The punching forming machine has the advantages that the centering positioning mechanism is arranged on the bearing table, a rotating motor is adopted to drive a set of sliding frames to move relatively, a metal plate can be centered and positioned through a plurality of positioning wheels at the upper end, and then a hydraulic cylinder is adopted by the punching forming mechanism to drive an outer circular top die and an inner hole top die to move downwards; one-time punch forming of the inner hole and the outer circle of the gasket can be achieved, and the gasket punch forming efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of washer production, in particular to a device for one-time stamping forming of the inner hole of a washer. Background Art

[0002] A washer refers to a part placed between the connected parts and the nut. Generally, it is a flat metal ring used to protect the surface of the connected parts from being scratched by the nut and to disperse the pressure of the nut on the connected parts. Washers are divided into: high-strength washers for steel structures, spherical washers, conical washers, square bevel washers for I-beams, square bevel washers for channel steels, standard spring washers, light spring washers, heavy spring washers, internal tooth lock washers, internal serrated lock washers, external tooth lock washers, external serrated lock washers, single-ear stop washers, double-ear stop washers, external tongue stop washers, stop washers for round nuts, etc.

[0003] In the existing patent with the application number CN 202220408757.4, a high-precision grinding device for the inner hole of a metal washer is disclosed. A clamping block is used to position and clamp the metal washer, and a grinding head is used to realize the grinding process of the inner hole of the metal washer. However, when using the grinding method to open a hole on the surface of the metal washer, burrs are likely to be generated on the surface after the hole is opened. Moreover, during the grinding hole-opening process, the block and the moving plate need to be manually adjusted respectively, which affects the hole-opening efficiency of the washer.

[0004] It should be noted that the above content belongs to the technical cognition scope of the inventor and does not necessarily constitute the prior art. Content of the Utility Model

[0005] Aiming at the above defects, the utility model provides a device for one-time stamping forming of the inner hole of a washer to solve the problem of one-time stamping forming of the inner hole of a washer.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for one-time stamping forming of the inner hole of a washer includes a base and an n-shaped mounting frame installed on the base. A bearing platform is installed at the center of the base, and a centering and positioning mechanism is arranged on the bearing platform. A stamping and forming mechanism is arranged at the bottom of the n-shaped mounting frame;

[0008] The stamping and forming mechanism includes a hydraulic cylinder, a lifting plate, an outer circle top die, an inner hole top die, a stamping groove, a fixed ring, an inner hole bottom die, and an outer circle bottom die. The hydraulic cylinder is installed at the center of the upper end of the n-shaped mounting frame, and the telescopic end is vertically downward. The lifting plate is installed on the telescopic end of the hydraulic cylinder. The outer circle top die is fixedly installed at the bottom of the lifting plate. The inner hole top die is movably inserted into the outer circle top die. The stamping groove is opened at the center of the upper surface of the bearing platform. The fixed ring is installed at the upper end of the stamping groove. The inner hole bottom die is installed at the bottom of the stamping groove. The outer circle bottom die is movably sleeved on the upper end of the inner hole bottom die.

[0009] Furthermore, the centering and positioning mechanism includes a set of positioning blocks, positioning grooves, a rotary motor, a rotating rod, a set of fixed slide rails, a set of sliding brackets, and several positioning wheels. The set of positioning blocks is installed at the rear end of the bearing platform. The positioning grooves are formed in the inner bottom of the bearing platform. The rotary motor is installed at the center of the inner bottom of the positioning groove, and its rotating end is vertically upward. The rotating rod is installed on the rotating end of the rotary motor. The set of fixed slide rails is installed on both sides of the inner bottom of the positioning groove. The bottoms of the set of sliding brackets are respectively slidably installed on the set of fixed slide rails. The several positioning wheels are respectively movably installed on the upper ends of the set of sliding brackets.

[0010] Furthermore, both ends of the rotating rod are respectively movably hinged to the set of sliding brackets through connecting rods.

[0011] Furthermore, a set of guide sleeves are fixedly inserted on both sides of the upper end of the n-shaped mounting bracket. A set of guide rods are movably inserted into the set of guide sleeves. The bottoms of the set of guide rods are respectively connected to the lifting plate.

[0012] Furthermore, a first spring is sleeved on the outer surface of the outer circular top die, and a limit block is installed at the top.

[0013] Furthermore, a second spring is sleeved on the outer surface of the inner hole bottom die, and the upper end of the second spring is connected to the outer circular bottom die.

[0014] The utility model provides a device for one-time stamping forming of the inner hole of a washer, which has the following beneficial effects. Through the centering and positioning mechanism arranged on the bearing platform, the rotary motor drives a set of sliding brackets to move relative to each other, and several positioning wheels at the upper end can center and position the metal plate. Then, the stamping forming mechanism uses a hydraulic cylinder to drive the outer circular top die and the inner hole top die to move downward, and can realize one-time stamping forming of the inner hole and the outer circle of the washer, effectively improving the stamping forming efficiency of the washer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the device for one-time stamping forming of the inner hole of the washer described in the utility model.

[0016] Figure 2 It is a schematic diagram of the stamping forming mechanism of the utility model.

[0017] Figure 3 It is a cross-sectional view of the bearing platform described in the utility model.

[0018] Figure 4 It is a top view of the bearing platform described in the utility model.

[0019] Figure 5 It is a schematic diagram of the centering and positioning mechanism of the utility model.

[0020] In the figure: 1. Base; 2. N-shaped mounting frame; 3. Bearing platform; 4. Hydraulic cylinder; 5. Lifting plate; 6. Outer circle top die; 7. Inner hole top die; 8. Stamping groove; 9. Fixed ring; 10. Inner hole bottom die; 11. Outer circle bottom die; 12. Positioning block; 13. Positioning groove; 14. Rotating motor; 15. Rotating rod; 16. Fixed slide rail; 17. Sliding frame; 18. Positioning wheel; 19. Connecting rod; 20. Guide sleeve; 21. Guide rod; 22. First spring; 23. Limiting block; 24. Second spring. Specific implementation manner

[0021] The following combines the attached drawings to specifically describe the present utility model. As Figures 1-5 shown: A device for one-time stamping forming of the inner hole of a washer, including a base 1 and an N-shaped mounting frame 2 installed on the base 1. A bearing platform 3 is installed at the center of the base 1, and a centering and positioning mechanism is provided on the bearing platform 3. A stamping and forming mechanism is provided at the bottom of the N-shaped mounting frame 2; the stamping and forming mechanism includes a hydraulic cylinder 4, a lifting plate 5, an outer circle top die 6, an inner hole top die 7, a stamping groove 8, a fixed ring 9, an inner hole bottom die 10, and an outer circle bottom die 11. The hydraulic cylinder 4 is installed at the center of the upper end of the N-shaped mounting frame 2, and the telescopic end is vertically downward. The lifting plate 5 is installed on the telescopic end of the hydraulic cylinder 4. The outer circle top die 6 is fixedly installed at the bottom of the lifting plate 5. The inner hole top die 7 is movably inserted into the outer circle top die 6. The stamping groove 8 is opened at the center of the upper surface of the bearing platform 3. The fixed ring 9 is installed at the upper end of the stamping groove 8. The inner hole bottom die 10 is installed at the bottom of the stamping groove 8. The outer circle bottom die 11 is movably sleeved on the upper end of the inner hole bottom die 10; the centering and positioning mechanism includes a set of positioning blocks 12, a positioning groove 13, a rotating motor 14, a rotating rod 15, a set of fixed slide rails 16, a set of sliding frames 17, and several positioning wheels 18. A set of positioning blocks 12 is installed at the rear end of the bearing platform 3. The positioning groove 13 is opened at the bottom of the bearing platform 3. The rotating motor 14 is installed at the center of the bottom of the positioning groove 13, and the rotating end is vertically upward. The rotating rod 15 is installed on the rotating end of the rotating motor 14. A set of fixed slide rails 16 is installed on both sides of the bottom of the positioning groove 13. The bottoms of a set of sliding frames 17 are respectively slidably installed on a set of fixed slide rails 16. Several positioning wheels 18 are respectively movably installed at the upper ends of a set of sliding frames 17; both ends of the rotating rod 15 are respectively movably hinged to a set of sliding frames 17 through connecting rods 19; a set of guide sleeves 20 are fixedly inserted at both sides of the upper end of the N-shaped mounting frame 2. A set of guide rods 21 are movably inserted into a set of guide sleeves 20. The bottoms of a set of guide rods 21 are respectively connected to the lifting plate 5; a first spring 22 is sleeved on the outer surface of the outer circle top die 6, and a limiting block 23 is installed at the top; a second spring 24 is sleeved on the outer surface of the inner hole bottom die 10, and the upper end of the second spring 24 is connected to the outer circle bottom die 11.

[0022] Working principle of this implementation scheme: The electrical equipment used by this device is controlled by an external controller. When in use, the user first places the metal sheet on the bearing table 3 and makes the rear end of the metal sheet contact with a set of positioning blocks 12.

[0023] During centering and positioning: A set of positioning blocks 12 are installed at the rear end of the bearing table 3, a positioning groove 13 is opened at the inner bottom of the bearing table 3, a rotating motor 14 is installed at the center of the inner bottom of the positioning groove 13, and the rotating end is vertically upward. A rotating rod 15 is installed on the rotating end of the rotating motor 14. A set of fixed sliding rails 16 are installed on both sides of the inner bottom of the positioning groove 13. The bottoms of a set of sliding frames 17 are respectively slidably installed on a set of fixed sliding rails 16. A number of positioning wheels 18 are respectively movably installed on the upper ends of a set of sliding frames 17. Both ends of the rotating rod 15 and a set of sliding frames 17 are respectively movably hinged through connecting rods 19. As Figure 3 — Figure 5 shown, both sides of the metal sheet are located above the positioning groove 13. The rotating motor 14 drives the rotating rod 15 to rotate counterclockwise, and drives a set of sliding frames 17 to move relative to each other through a set of connecting rods 19. A number of positioning wheels 18 at the upper ends of a set of sliding frames 17 can realize the centering and positioning of the metal sheet.

[0024] During one-time stamping and forming: The hydraulic cylinder 4 is installed at the center of the upper end of the n-shaped mounting frame 2, and the telescopic end is vertically downward. The lifting plate 5 is installed on the telescopic end of the hydraulic cylinder 4. The outer circular top die 6 is fixedly installed at the bottom of the lifting plate 5. The inner hole top die 7 is movably inserted into the outer circular top die 6. A stamping groove 8 is opened at the center of the upper surface of the bearing table 3. A fixed ring 9 is installed at the upper end of the stamping groove 8. The inner hole bottom die 10 is installed at the inner bottom of the stamping groove 8. The outer circular bottom die 11 is movably sleeved on the upper end of the inner hole bottom die 10. A set of guide sleeves 20 are fixedly inserted on both sides of the upper end of the n-shaped mounting frame 2. A set of guide rods 21 are movably inserted into a set of guide sleeves 20. The bottoms of a set of guide rods 21 are respectively connected to the lifting plate 5. A spring one 22 is sleeved on the outer surface of the outer circular top die 6, and a limit block 23 is installed at the top. A spring two 24 is sleeved on the outer surface of the inner hole bottom die 10, and the upper end of the spring two 24 is connected to the outer circular bottom die 11. As Figure 2 and Figure 3 shown, the hydraulic cylinder 4 drives the lifting plate 5 to move downward. A set of guide rods 21 play a guiding role. The height of the inner hole bottom die 10 is lower than that of the outer circular bottom die 11. The outer circular top die 6 first pushes the outer circular bottom die 11 downward to realize stamping and forming of the outer circle of the washer. Then, the inner hole bottom die 10 pushes the inner hole top die 7 upward to realize stamping and forming of the inner hole of the washer, thus achieving one-time stamping and forming of the inner hole of the washer, effectively improving the stamping and forming efficiency of the washer. The spring one 22 and the spring two 24 play a buffering role. During the actual use process, the user can design the corresponding-sized top die and bottom die according to the size of the washer to be stamped and formed.

[0025] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present utility model. Some changes that those skilled in the art of this technology may make to some parts thereof all reflect the principles of the present utility model and fall within the protection scope of the present utility model.

Claims

1. A one-step punching device for a gasket inner hole, comprising a base (1) and an n-shaped mounting frame (2) mounted on the base (1), characterized in that: A bearing platform (3) is installed at the center of the base (1), a centering positioning mechanism is provided on the bearing platform (3), and a stamping and forming mechanism is provided at the bottom of the N-shaped mounting frame (2); The stamping forming mechanism comprises a hydraulic cylinder (4), a lifting plate (5), an outer dome die (6), an inner hole die (7), a stamping groove (8), a fixing ring (9), an inner hole die (10) and an outer dome die (11), wherein the hydraulic cylinder (4) is mounted at the center of the upper end of the n-shaped mounting frame (2), and the telescopic end is vertically downward, the lifting plate (5) is mounted on the telescopic end of the hydraulic cylinder (4), the outer dome die (6) is fixedly mounted on the bottom of the lifting plate (5), the inner hole die (7) is movably inserted in the outer dome die (6), the stamping groove (8) is opened at the center of the upper surface of the bearing platform (3), the fixing ring (9) is mounted on the upper end of the stamping groove (8), the inner hole die (10) is mounted on the inner bottom of the stamping groove (8), and the outer dome die (11) is movably sleeved on the upper end of the inner hole die (10).

2. A one-step punching device for the inner hole of a gasket according to claim 1, characterized in that: The centering and positioning mechanism comprises a group of positioning blocks (12), a positioning groove (13), a rotating motor (14), a rotating rod (15), a group of fixed slide rails (16), a group of sliding frames (17) and a plurality of positioning wheels (18), wherein the group of positioning blocks (12) is mounted on the rear end of the support platform (3), the positioning groove (13) is opened at the bottom of the support platform (3), the rotating motor (14) is mounted at the center of the bottom of the positioning groove (13), and the rotating end faces vertically upward, the rotating rod (15) is mounted on the rotating end of the rotating motor (14), a group of fixed slide rails (16) are mounted on both sides of the bottom of the positioning groove (13), the bottom of a group of sliding frames (17) are respectively slidably mounted on the group of fixed slide rails (16), and the plurality of positioning wheels (18) are respectively movably mounted on the upper ends of the group of sliding frames (17).

3. A one-step punching device for the inner hole of a gasket according to claim 2, characterized in that: The two ends of the rotating rod (15) are movably hinged to a group of sliding frames (17) via connecting rods (19).

4. A one-step punching device for the inner hole of a gasket according to claim 1, characterized in that: A group of guide sleeves (20) are fixedly inserted at both sides of the upper end of the N-shaped mounting frame (2), a group of guide rods (21) are movably inserted in the group of guide sleeves (20), and the bottoms of the group of guide rods (21) are respectively connected to the lifting plates (5).

5. A one-step punching and forming device for the inner hole of a gasket according to claim 1, characterized in that: The outer surface of the outer dome mold (6) is sleeved with a spring 1 (22), and a limit block (23) is installed on the top.

6. A one-step punching device for the inner hole of a gasket according to claim 1, characterized in that: The outer surface of the inner hole bottom mold (10) is sleeved with a second spring (24), and the upper end of the second spring (24) is connected to the outer circular bottom mold (11).

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