Cold heading die

Abstract

The utility model discloses a cold heading die which comprises a mounting base, a die holder assembly used for containing a formed workpiece is mounted on the outer wall of the top of the mounting base, a supporting rod and a lining plate are fixed to the top of the mounting base, a supporting disc is fixed to the outer wall of the top of the supporting rod, and a through hole formed in the surface of the lining plate is movably connected with a sliding rod. A supporting plate matched with the supporting disc is welded to one end of the sliding rod, a feeding assembly is further mounted on the outer wall of the top of the mounting base and comprises a support and a driving motor, the support is fixed to the outer wall of the top of the mounting base, and a mold ejecting assembly is mounted at the top of the support. Through the design of the two sets of discharging pieces, a formed workpiece can be kept in a vertical state in the rotating process, when the formed workpiece moves to the position right opposite to the die base assembly, the supporting plate gradually moves away, it is ensured that the workpiece accurately falls into a forming cavity under the gravity effect, the design improves the feeding precision, manual intervention is reduced, and the production efficiency is improved. And the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a cold heading mold. Background Technology

[0002] Cold heading dies are a type of process equipment widely used in the forming of metal parts. They are mainly used to manufacture standard parts such as bolts, nuts, and rivets, as well as metal parts of various complex shapes. Their working principle is to use cold heading technology to plastically deform metal materials at room temperature, so that they are formed into the required shape and size in the mold cavity. Cold heading has the advantages of high production efficiency, high material utilization, and good product strength. However, traditional cold heading dies still have some problems in practical applications: the feeding process of traditional dies usually relies on manual operation or simple mechanical devices, which makes it difficult to ensure the accurate positioning of the workpiece in the mold cavity, which can easily lead to forming deviations or an increase in scrap rate.

[0003] A search revealed Chinese patent application number 201922406301.5, which discloses a bolt cold heading die assembly. The top die and die base are positioned opposite each other, and a T-shaped groove is formed at the center of the top die near the die base. A horizontally arranged electro-hydraulic rod is fixedly connected to the inner bottom wall of the T-shaped groove. A pressure plate is fixedly connected to the drive end of the electro-hydraulic rod, and a groove matching the pressure plate is formed on the side of the die base opposite the top die.

[0004] The bolt cold heading mold assembly in the aforementioned patent has the following shortcomings: the feeding process relies on manual operation. During the manual feeding of the blank, the hand is located between the top mold and the mold base, which poses a safety hazard and cannot guarantee the safety of feeding. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cold heading mold.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cold heading die includes a mounting base. A die base assembly for accommodating the workpiece is mounted on the top outer wall of the mounting base. A feeding assembly is also mounted on the top outer wall of the mounting base. The feeding assembly includes a bracket and a drive motor. The bracket is fixed to the top outer wall of the mounting base. A top die assembly is mounted on the top of the bracket. The drive motor is fixed to the top outer wall of the bracket. The output end of the drive motor is connected to a rotating shaft via a coupling. A feeding component is fixed to the outer circumference of the rotating shaft. The feeding component includes a fan-shaped plate, a turntable, and positioning holes. The turntable is fixed to the outer circumference of the rotating shaft. Multiple fan-shaped plates are uniformly fixed to the outer circumference of the turntable in a ring. Positioning holes are formed on the surface of the fan-shaped plates.

[0008] As a further embodiment of this utility model: the mold base assembly includes a mold base body and a column, the column is fixed to the top outer wall of the mounting base, and the mold base body is welded to the top outer wall of the column, and a molding cavity is opened in the middle of the mold base body.

[0009] As a further embodiment of this utility model: an intermediate plate is welded to the outer wall of the column, and an electric telescopic rod is fixed to the bottom outer wall of the intermediate plate, and a connecting block is fixed to the output end of the electric telescopic rod, and a pin is welded to the top of the connecting block.

[0010] As a further embodiment of this utility model: the top mold assembly includes a hydraulic cylinder and an extrusion head, the hydraulic cylinder is fixed to the outer wall of the top of the bracket, and the extrusion head is fixed to the output end of the hydraulic cylinder.

[0011] As a further improvement of this utility model: a liner is fixed to the top of the mounting base, and a sliding rod is movably connected to a through hole on the surface of the liner, with a support plate welded to one end of the sliding rod.

[0012] As a further improvement of this utility model: a connecting frame is fixed to the outer wall of the extrusion head, and a connecting rod is movably connected between the inner wall of the connecting frame and one end of the slide rod.

[0013] As a further improvement of this utility model: support rods are fixed to the top of the mounting base, and support plates are fixed to the outer wall of the top of the support rods.

[0014] As a further improvement of this utility model: a controller is installed on one side of the outer wall of the bracket, which is used to control the hydraulic cylinder, drive motor and electric telescopic rod.

[0015] Compared with the prior art, the present invention provides a cold heading die, which has the following beneficial effects:

[0016] This application, through the design of two sets of feeding components, enables the molded workpiece to remain vertical during rotation, and when it moves to the position directly opposite the mold base assembly, the support plate gradually moves away, ensuring that the workpiece accurately falls into the molding cavity under the action of gravity. This design not only improves the accuracy of feeding, but also reduces manual intervention and improves production efficiency.

[0017] It integrates various automated components such as drive motors, hydraulic cylinders, and electric telescopic rods, and is controlled by a unified controller to achieve fully automated operation from feeding and forming to unloading, reducing the difficulty of operation and the possibility of human error.

[0018] The mold uses a linkage mechanism to convert the vertical movement of the extrusion head into the lateral movement of the slide bar, thereby achieving synchronous movement of the support plate and ensuring accurate positioning of the workpiece during the forming process. At the same time, the ejector pin design in the mold base assembly allows the formed workpiece to be ejected smoothly, facilitating unloading.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the side structure of this utility model.

[0022] Figure 3 This is an exploded structural diagram of the mold base assembly, feeding assembly, and top mold assembly of this utility model.

[0023] Figure 4 This is an exploded structural diagram of the top mold assembly and the feeding assembly of this utility model.

[0024] Figure 5 This is an exploded structural diagram of the top mold assembly and the feeding assembly of this utility model.

[0025] Figure 6 This is an exploded structural diagram of the mold base assembly of this utility model.

[0026] In the diagram: Mounting base 1; Connecting rod 2; Bracket 3; Hydraulic cylinder 4; Drive motor 5; Support rod 6; Connecting frame 7; Mold base body 8; Column 9; Electric telescopic rod 10; Intermediate plate 11; Rotating shaft 12; Fan-shaped plate 13; Molding cavity 14; Slide rod 15; Liner plate 16; Support plate 17; Turntable 18; Positioning hole 19; Support plate 20; Extrusion head 21; Connecting block 22; Ejector pin 23; Molded workpiece 24; Controller 25. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] A cold heading die, such as Figures 1 to 6As shown, the device includes a mounting base 1. A mold base assembly for accommodating the molded workpiece 24 is mounted on the top outer wall of the mounting base 1. A support rod 6 and a liner plate 16 are bolted to the top of the mounting base 1. A support plate 20 is bolted to the top outer wall of the support rod 6. A sliding rod 15 is slidably connected to a through hole on the surface of the liner plate 16. A support plate 17 adapted to the support plate 20 is welded to one end of the sliding rod 15. A feeding assembly is also mounted on the top outer wall of the mounting base 1. The feeding assembly includes a bracket 3 and a drive motor 5. The bracket 3 is bolted... The top outer wall of the mounting base 1 is fixed with bolts, the top mold assembly is installed on the top of the bracket 3, and the drive motor 5 is fixed to the top outer wall of the bracket 3 with bolts. The output end of the drive motor 5 is connected to the rotating shaft 12 through a coupling. The outer circumference of the rotating shaft 12 is fixed with a feeding component, which includes a fan-shaped plate 13, a turntable 18 and a positioning hole 19. The turntable 18 is fixed to the outer circumference of the rotating shaft 12, and multiple fan-shaped plates 13 are uniformly fixed to the outer circumference of the turntable 18 in a ring. The positioning hole 19 is opened on the surface of the fan-shaped plate 13 and is adapted to the formed workpiece 24.

[0029] In this embodiment, two sets of feeding components are preferred. When it is necessary to feed the molded workpiece 24, the molded workpiece 24 is inserted into the two sets of opposing positioning holes 19 from top to bottom. The support plate 20 supports the bottom of the molded workpiece 24 and ensures that the molded workpiece 24 is in a vertical state. When it is necessary to feed the molded workpiece 24, the drive motor 5 drives the two sets of feeding components to rotate. During the rotation of the feeding components, the molded workpiece 24 rotates synchronously. When the molded workpiece 24 moves to the top of the support plate 17 and is directly opposite the mold base assembly, the drive slide rod 15 slides outward along the liner 16 to make the support plate 17 gradually move away from the support plate 20. When the support plate 20 is removed from the bottom of the molded workpiece 24, the molded workpiece 24 will fall into the mold base assembly under its own gravity. The two sets of feeding components play a corrective role for the molded workpiece 24, ensuring that the molded workpiece 24 falls smoothly into the mold base assembly, thus realizing the feeding of the molded workpiece 24.

[0030] The mold base assembly includes a mold base body 8 and a column 9. The column 9 is fixed to the top outer wall of the mounting base 1 by bolts, and the mold base body 8 is welded to the top outer wall of the column 9. A molding cavity 14 is opened in the middle of the mold base body 8, and an intermediate plate 11 is welded to the outer wall of the column 9. An electric telescopic rod 10 is fixed to the bottom outer wall of the intermediate plate 11 by bolts. A connecting block 22 is fixed to the output end of the electric telescopic rod 10 by bolts, and an ejector pin 23 is welded to the top of the connecting block 22.

[0031] In the initial stage, the top of the ejector pin 23 is flush with the bottom of the molding cavity 14. After the molded workpiece 24 falls into the molding cavity 14, the top mold assembly extrudes and molds the workpiece 24. After the workpiece 24 is molded, the electric telescopic rod 10 drives the connecting block 22 and the ejector pin 23 to move upward. During the upward movement, the ejector pin 23 pushes the workpiece 24 out of the molding cavity 14, thus realizing the unloading of the workpiece 24.

[0032] The top mold assembly includes a hydraulic cylinder 4 and an extrusion head 21. The hydraulic cylinder 4 is fixed to the top outer wall of the bracket 3 by bolts, and the extrusion head 21 is fixed to the output end of the hydraulic cylinder 4 by bolts.

[0033] After the molded workpiece 24 falls into the molding cavity 14 and is loaded, the drive motor 5 is controlled to drive the unloading part to rotate again. When the gap between two adjacent fan-shaped plates 13 rotates to the top of the molding cavity 14, the hydraulic cylinder 4 is controlled to drive the extrusion head 21 to move down, and the extrusion head 21 is used to extrude and mold the molded workpiece 24 in the molding cavity 14.

[0034] The outer wall of the extrusion head 21 is fixed with a connecting frame 7 by bolts, and a connecting rod 2 is rotatably connected between the inner wall of the connecting frame 7 and one end of the slide rod 15.

[0035] The vertical movement of the extrusion head 21 can be converted into the lateral movement of the slide bar 15 along the liner plate 16 by the connecting rod 2. When the feeding component drives the forming workpiece 24 to rotate to a position directly opposite the forming cavity 14, the hydraulic cylinder 4 is first controlled to drive the extrusion head 21 to move downward without contacting the top of the forming workpiece 24. During this process, the connecting rod 2 drives the slide bar 15 and the support plate 17 to move laterally, so that when the support plate 17 detaches from the bottom of the forming workpiece 24, the forming workpiece 24 falls into the forming cavity 14 under its own gravity. Then, the drive motor 5 drives the feeding component to rotate, so that when the gap between two adjacent fan-shaped plates 13 moves above the forming cavity 14, the hydraulic cylinder 4 continues to drive the extrusion head 21 to move downward, extruding and forming the forming workpiece 24 in the forming cavity 14.

[0036] A controller 25 is installed on one side of the outer wall of the bracket 3.

[0037] The controller 25 is used to control the hydraulic cylinder 4, the drive motor 5, and the electric telescopic rod 10.

[0038] Working principle: The forming workpiece 24 is inserted from top to bottom into two sets of opposing positioning holes 19. The support plate 20 supports the bottom of the forming workpiece 24 to ensure it is in a vertical position. The controller 25 starts the drive motor 5 to drive the two sets of feeding parts to rotate, causing the forming workpiece 24 to rotate synchronously. When the forming workpiece 24 moves to the top of the support plate 17 and is directly opposite the mold base assembly, the controller 25 first controls the hydraulic cylinder 4 to drive the extrusion head 21 to move downwards without contacting the top of the forming workpiece 24. During this process, the connecting rod 2 drives the sliding rod 15 and the support plate 17 to move laterally, so that when the support plate 17... When the workpiece 24 detaches from the bottom, it falls into the forming cavity 14 under its own gravity. Then, the controller 25 controls the drive motor 5 to drive the feeding part to rotate. When the gap between two adjacent fan-shaped plates 13 moves above the forming cavity 14, the hydraulic cylinder 4 continues to drive the extrusion head 21 to move down, extruding the workpiece 24 in the forming cavity 14. After forming, the controller 25 controls the electric telescopic rod 10 to drive the connecting block 22 and the ejector pin 23 to move up. The ejector pin 23 pushes the workpiece 24 out of the forming cavity 14 to achieve unloading.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cold heading die, comprising a mounting base (1), characterized in that, The mounting base (1) is equipped with a mold base assembly for accommodating the molded workpiece (24) on its top outer wall. The mounting base (1) is also equipped with a feeding assembly, which includes a bracket (3) and a drive motor (5). The bracket (3) is fixed to the top outer wall of the mounting base (1). The top of the bracket (3) is equipped with a top mold assembly. The drive motor (5) is fixed to the top outer wall of the bracket (3). The output end of the drive motor (5) is connected to a rotating shaft (12) via a coupling. The outer circumference of the rotating shaft (12) is fixed with a feeding component. The feeding component includes a fan-shaped plate (13), a turntable (18), and a positioning hole (19). The turntable (18) is fixed to the outer circumference of the rotating shaft (12). Multiple fan-shaped plates (13) are uniformly fixed in a ring to the outer circumference of the turntable (18). The positioning hole (19) is opened on the surface of the fan-shaped plate (13).

2. The cold heading die according to claim 1, characterized in that, The mold base assembly includes a mold base body (8) and a column (9). The column (9) is fixed to the top outer wall of the mounting base (1), and the mold base body (8) is welded to the top outer wall of the column (9). A molding cavity (14) is opened in the middle of the mold base body (8).

3. A cold heading die according to claim 2, characterized in that, The column (9) has an intermediate plate (11) welded to its outer wall, and an electric telescopic rod (10) is fixed to the bottom outer wall of the intermediate plate (11). A connecting block (22) is fixed to the output end of the electric telescopic rod (10), and a pin (23) is welded to the top of the connecting block (22).

4. A cold heading die according to claim 3, characterized in that, The top mold assembly includes a hydraulic cylinder (4) and an extrusion head (21). The hydraulic cylinder (4) is fixed to the top outer wall of the bracket (3), and the extrusion head (21) is fixed to the output end of the hydraulic cylinder (4).

5. A cold heading die according to claim 4, characterized in that, The mounting base (1) has a liner (16) fixed on top. A through hole is opened on the surface of the liner (16) and a slide rod (15) is movably connected to it. A support plate (17) is welded to one end of the slide rod (15).

6. A cold heading die according to claim 5, characterized in that, The outer wall of the extrusion head (21) is fixed with a connecting frame (7), and a connecting rod (2) is movably connected between the inner wall of the connecting frame (7) and one end of the slide rod (15).

7. A cold heading die according to claim 6, characterized in that, The mounting base (1) is fixed with a support rod (6) on its top, and a support plate (20) is fixed to the outer wall of the top of the support rod (6).

8. A cold heading die according to claim 7, characterized in that, A controller (25) is installed on one side of the outer wall of the bracket (3). The controller (25) is used to control the hydraulic cylinder (4), the drive motor (5) and the electric telescopic rod (10).

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