Spinning forming die

Abstract

The utility model discloses a spinning forming die which comprises a fixing frame, an outer die is arranged at the bottom of the fixing frame, an inner die is arranged in the center of the interior of the outer die, the inner die comprises an outer fan-shaped block and an inner fan-shaped block, and a hump groove is formed in the inner side of the outer fan-shaped block. Hump protrusions corresponding to the hump grooves are fixedly connected to the outer side walls of the inner fan-shaped blocks, mold cores are arranged in the middles of the inner fan-shaped blocks, fixing holes are formed in the top of the outer mold, mounting holes corresponding to the fixing holes are formed in the peripheral side of the fixing frame, and fixing bolts are arranged at the tops of the mounting holes. And the fixing bolts penetrate through the mounting holes and are in threaded connection with the fixing holes. The inner die, the outer die and the die core are matched with one another, the product size can be determined by the die through outer die limiting, inner die bulging and part rotating multiple times of forming, the size precision is high, the wall thickness of the formed part is even, meanwhile, in the forming process, the wall of a plate is evenly stressed, the surface of the part is free of indentation, and the machining quality of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning dies, in particular to a spinning forming die. Background Art

[0002] Spinning is a process in which a flat or hollow blank is fixed on a die of a spinning machine. While the blank rotates with the main shaft of the machine, a spinning wheel or a driving bar is used to apply pressure to the blank, causing local plastic deformation. Spinning is a special forming method. By using the spinning method, various processes such as deep drawing, flanging, necking, bulging, and curling of rotating bodies of various shapes can be completed.

[0003] Currently, when spinning and shaping the product port, such as hump forming, flanging forming, etc., most of them use roller extrusion to form the workpiece. However, when forming by this method, it is difficult to control the product size accuracy, the plate thickness of the formed part is uneven, and at the same time, there will be indentations on the surface of the plate, which is likely to cause a decrease in corrosion resistance.

[0004] Therefore, we propose to design a spinning forming die. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. In this part, as well as in the abstract and the title of the utility model of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this part, the abstract, and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solutions:

[0007] A spinning forming die, including a fixed frame, an outer die is arranged at the bottom of the fixed frame, and an inner die is arranged at the center inside the outer die;

[0008] The inner die includes an outer sector block and an inner sector block. A hump groove is arranged inside the outer sector block, and a hump protrusion corresponding to the hump groove is fixedly connected to the outer side wall of the inner sector block;

[0009] A die core is arranged in the middle of the inner sector block.

[0010] As a preferred scheme of a spinning forming die according to the utility model, wherein, a fixing hole is arranged at the top of the outer die, mounting holes corresponding to the fixing hole are arranged on the periphery of the fixed frame, a fixing bolt is arranged at the top of the mounting hole, the fixing bolt passes through the mounting hole and is threadedly connected to the fixing hole. The outer die is also composed of several sector blocks. The fixing bolt facilitates the assembly of the outer die and uniformly mounts it on the fixed frame to jointly form an annular outer die.

[0011] As a preferred embodiment of the spinning forming die of the present utility model, several outer sector blocks and inner sector blocks are provided. The cross-sections of several outer sector blocks and inner sector blocks are all annularly arranged. An inner die is jointly formed by the outer sector blocks and the inner sector blocks, and the cross-sections of the two form a large and a small nested ring. During processing, the inner sector blocks extrude the outer sector blocks outwards, facilitating the expansion of the outer diameter range of the inner die to adapt to processing products with different inner diameters.

[0012] As a preferred embodiment of the spinning forming die of the present utility model, a limiting groove is provided on the outer side wall of the inner sector block, and a limiting block is fixedly connected to the inner wall of the outer sector block. The limiting groove and the limiting block are correspondingly fitted, facilitating the assembly between the outer sector block and the inner sector block. When the inner sector block moves outwards, it can stably push the outer sector blocks in one circle outside to move simultaneously.

[0013] As a preferred embodiment of the spinning forming die of the present utility model, the die core is conically arranged, the inner wall of the inner sector block is inclined, and the outer wall of the die core is smoothly fitted with the inner wall of the inner sector block. When the die core gradually enters the inner part of the inner sector block, through the fitted inclined side walls, it is convenient to drive the inner sector block to move outwards, expand the size of the inner die, and jointly perform spinning forming on the product with the outer die.

[0014] As a preferred embodiment of the spinning forming die of the present utility model, two handles are fixedly connected to the top of the fixing frame, and the two handles are respectively located at both ends of the top of the fixing frame, facilitating the staff to move the fixing frame and at the same time facilitating pulling the fixing frame, which is convenient for the assembly between the fixing frame and the outer die.

[0015] As a preferred embodiment of the spinning forming die of the present utility model, a hydraulic rod is provided at the bottom of the die core, and a central rod is fixedly connected to the telescopic end of the hydraulic rod. The central rod penetrates through the middle of the die core and is fixedly connected to it. By starting the hydraulic rod, it is convenient to assist in driving the die core to move into the inner die.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] Through the mutual cooperation among the inner die, the outer die and the die core of the present utility model, through the limitation of the outer die and the bulging of the inner die, the part is formed by rotating multiple times, so that the product size can be determined by the die, the dimensional accuracy is high, and the wall thickness of the formed part is uniform. At the same time, during the forming process, the force on the plate wall is uniform, and there are no indentations on the surface of the part, improving the processing quality of the product. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0019] Figure 1 It is a schematic external view of a spinning forming die of the present utility model;

[0020] Figure 2 It is a schematic cross-sectional structure view of a spinning forming die of the present utility model;

[0021] Figure 3 It is Figure 2 a schematic structure view of part A in

[0022] Legend description: 1. Fixed frame; 101. Handle; 2. Outer die; 201. Fixed hole; 202. Fixed bolt; 3. Inner die; 301. Outer sector block; 302. Inner sector block; 303. Hump groove; 304. Hump protrusion; 4. Die core; 5. Limit groove; 6. Limit block; 7. Hydraulic rod. Specific embodiments

[0023] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below in conjunction with the drawings.

[0024] Secondly, the present utility model is described in detail in combination with the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples, which should not limit the protection scope of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0025] To make the purpose, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below in conjunction with the drawings.

[0026] Please refer to Figures 1-3 , the present utility model provides a spinning forming die, including a fixed frame 1, and an outer die 2 is arranged at the bottom of the fixed frame 1. Two handles 101 are fixedly connected to the top of the fixed frame 1, and the two handles 101 are respectively located at both ends of the top of the fixed frame 1, which is convenient for the staff to move the fixed frame 1 and at the same time convenient for pulling the fixed frame 1, facilitating the assembly between the fixed frame 1 and the outer die 2.

[0027] The top of the outer mold 2 is provided with a fixing hole 201. Installation holes corresponding to the fixing holes 201 are provided on the peripheral side of the fixing frame 1. A fixing bolt 202 is arranged at the top of the installation hole. The fixing bolt 202 penetrates through the installation hole and is threadedly connected with the fixing hole 201. The outer mold 2 is also composed of several fan-shaped blocks. Through the fixing bolt 202, it is convenient to assemble the outer mold 2 and uniformly install it on the fixing frame 1 to jointly form an annular outer mold 2.

[0028] An inner mold 3 is arranged at the center inside the outer mold 2.

[0029] The inner mold 3 includes an outer fan-shaped block 301 and an inner fan-shaped block 302. A hump groove 303 is arranged on the inner side of the outer fan-shaped block 301, and a hump protrusion 304 corresponding to the hump groove 303 is fixedly connected to the outer side wall of the inner fan-shaped block 302.

[0030] In this embodiment, a plurality of outer fan-shaped blocks 301 and inner fan-shaped blocks 302 are provided. The cross-sections of the plurality of outer fan-shaped blocks 301 and inner fan-shaped blocks 302 are all annularly arranged. The inner mold 3 is jointly composed of the outer fan-shaped block 301 and the inner fan-shaped block 302, and the cross-sections of the two form a large and a small nested ring. During processing, the inner fan-shaped block 302 extrudes the outer fan-shaped block 301 outward, which is convenient for expanding the outer diameter range of the inner mold 3 to adapt to processing products with different inner diameters.

[0031] A limiting groove 5 is arranged on the outer side wall of the inner fan-shaped block 302, and a limiting block 6 is fixedly connected to the inner wall of the outer fan-shaped block 301. The limiting groove 5 and the limiting block 6 are correspondingly fitted, which is convenient for assembling between the outer fan-shaped block 301 and the inner fan-shaped block 302. When the inner fan-shaped block 302 moves outward, it can stably push the outer fan-shaped blocks 301 in one circle to move simultaneously.

[0032] A mold core 4 is arranged in the middle of the inner fan-shaped block 302.

[0033] The mold core 4 is conically arranged, the inner wall of the inner fan-shaped block 302 is inclined, and the outer wall of the mold core 4 is smoothly attached to the inner wall of the inner fan-shaped block 302. When the mold core 4 gradually enters the inner fan-shaped block 302, through the fitting inclined side walls, it is convenient to drive the inner fan-shaped block 302 to move outward. Expand the size of the inner mold 3 and jointly perform spin forming on the product with the outer mold 2.

[0034] A hydraulic rod 7 is arranged at the bottom of the mold core 4. A central rod is fixedly connected to the telescopic end of the hydraulic rod 7. The central rod penetrates through the middle of the mold core 4 and is fixedly connected to it. By starting the hydraulic rod 7, it is convenient to assist in driving the mold core 4 to move into the inner mold 3.

[0035] During use, in the initial state, the top end of the mold core 4 is located near the bottom of the inner sector block 302. The product is inserted between the inner mold 3 and the outer mold 2. The hydraulic rod 7 drives the mold core 4 to move in the inner mold 3. The outer inclined surface of the mold core 4 drives several inner sector blocks 302 to move outward simultaneously, driving the outer sector block 301 closer to the outer mold 2. The hump groove 303 on the inner side of the outer sector block 301 and the hump protrusion 304 on the outer side of the inner sector block 302 are used together to form the product.

[0036] During the forming process, the product is rotated multiple times to ensure that the outer wall of the product is evenly squeezed by the inner mold 3 and the outer mold 2, and finally is spin-formed.

[0037] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any way. The reason for not exhaustively describing the situations of these combinations in this specification is only to save space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A spinning forming die, comprising a fixing frame (1), characterized in that: An outer mold (2) is arranged at the bottom of the fixing frame (1), and an inner mold (3) is arranged at the center of the outer mold (2); The inner mold (3) comprises an outer fan-shaped block (301) and an inner fan-shaped block (302); a hump groove (303) is provided on the inner side of the outer fan-shaped block (301); and a hump protrusion (304) corresponding to the hump groove (303) is fixedly connected to the outer side wall of the inner fan-shaped block (302); A mold core (4) is arranged in the middle of the inner sector block (302).

2. A spinning die according to claim 1, characterized in that: The outer mold (2) has a fixing hole (201) at the top, the fixing frame (1) has a mounting hole corresponding to the fixing hole (201) at the circumference, and a fixing bolt (202) is provided at the top of the mounting hole. The fixing bolt (202) passes through the mounting hole and is threadedly connected to the fixing hole (201).

3. A spinning die according to claim 1, characterized in that: A plurality of the outer sector blocks (301) and the inner sector blocks (302) are provided, and the cross sections of the plurality of the outer sector blocks (301) and the inner sector blocks (302) are all arranged in a ring shape.

4. A spinning die according to claim 1, characterized in that: The outer wall of the inner sector block (302) is provided with a limiting groove (5), the inner wall of the outer sector block (301) is fixedly connected to the limiting block (6), and the limiting groove (5) and the limiting block (6) are correspondingly matched.

5. The spinning die according to claim 1, characterized in that: The mold core (4) is arranged in a conical shape, the inner wall of the inner sector block (302) is arranged in an inclined shape, and the outer wall of the mold core (4) is smoothly fitted with the inner wall of the inner sector block (302).

6. A spinning die according to claim 1, characterized in that: Two handles (101) are fixedly connected to the top of the fixing frame (1), and the two handles (101) are respectively located at two ends of the top of the fixing frame (1).

7. The spinning die according to claim 1, characterized in that: A hydraulic rod (7) is arranged at the bottom of the mold core (4); the telescopic end of the hydraulic rod (7) is fixedly connected to a center rod; the center rod passes through the middle of the mold core (4) and is fixedly connected thereto.

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