Automatic press-quenching die for disc spring and wave spring products

Abstract

The present application relates to a kind of disc spring and wave spring product automatic press quenching mould, it is related to machining mould technical field, it solves the existing press quenching mould when disc spring, wave spring is processed, product positioning is poor, the product formed exists partial position, the defect of large ovality, the problem of low yield, including upper die and lower die, lower die is provided with forming die cavity, upper die and the side of the lower die opposite is provided with circulating cooling water tank, forming die cavity is provided with positioning assembly, positioning assembly includes locating disc and expansion contraction piece, locating disc is enclosed by at least two locating blocks, at least two locating blocks are radially slidably arranged in forming die cavity;Expansion contraction piece is used to drive at least two the locating block realizes expansion and contraction movement;With the purpose of realizing the automatic alignment concentricity of disc spring or wave spring and forming die cavity, the consistency of the product size after press quenching can be ensured, the problems such as partial position, ovality are solved, the effect of improving processing quality is improved.

Description

Technical Field

[0001] This invention relates to the field of machining mold technology, and in particular to an automatic pressure quenching mold for disc springs and wave springs. Background Technology

[0002] The existing patent publication number "CN203778594U" discloses a pressure quenching mold for disc springs and wave springs, which belongs to the category of machining molds. Disc springs produced by existing stamping are prone to large deformation, resulting in the scrapping of the disc springs. The present invention has an upper mold assembled on an upper base plate, with an upper liner plate provided between the upper base plate and the upper mold; a lower mold assembled on a lower base plate, with a lower liner plate provided between the lower base plate and the lower mold; an annular groove is formed on the upper end face of the upper mold facing downwards, and the upper end face of the upper mold is sealed in contact with the upper liner plate to form a circulating cooling cavity for the upper mold; an annular groove is formed on the lower end face of the lower mold facing upwards, and the lower end face of the lower mold is sealed in contact with the lower liner plate to form a circulating cooling cavity for the lower mold.

[0003] The above description has the following problems: when processing disc springs and wave springs using this pressure quenching mold, the product positioning is poor, the formed products have defects such as misalignment and large ellipticity, and the yield is low. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic pressure quenching mold for disc springs and wave springs, which solves the problems of poor product positioning, misalignment, large ellipticity, and low yield of existing pressure quenching molds when processing disc springs and wave springs.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides an automatic pressure quenching mold for disc springs and wave springs, including an upper mold and a lower mold that mates with the upper mold. A forming cavity is detachably provided on the lower mold. Circulating cooling water tanks are provided on the opposite sides of both the upper and lower molds at positions corresponding to the forming cavity. A positioning component is provided inside the forming cavity, the positioning component comprising: A positioning disk, wherein the positioning disk is formed by at least two positioning blocks, and the at least two positioning blocks are radially slidably disposed within the molding cavity; An expansion and contraction component is used to drive at least two of the positioning blocks to achieve expansion and contraction movements.

[0006] Furthermore, the molding cavity includes a base plate, a baffle wall disposed on the upper edge of the base plate and arranged circumferentially, and a support plate disposed on the upper surface of the base plate. The diameter of the support plate is smaller than the inner diameter of the baffle wall. At least two positioning blocks are radially slidably disposed on the support plate, and the upper surface of the positioning blocks is higher than the upper surface of the baffle wall.

[0007] Furthermore, the expansion / contraction member includes: An expansion block, wherein the radial outer edge of the expansion block is inclined, the outer diameter of the top edge of the expansion block is larger than the outer diameter of the bottom edge, and a through hole is provided at the center of the positioning disk for the expansion block to pass through. A drive cylinder, the telescopic end of which passes through the lower mold, the base plate, and the support plate sequentially from bottom to top and connects to the bottom end of the expansion block; An elastic collar is fitted onto the radial outer edge surface of the positioning disk.

[0008] Furthermore, the number of positioning blocks is six.

[0009] Furthermore, the expansion block is conical in shape, and the shape of the through hole is adapted to the shape of the expansion block.

[0010] Furthermore, the support plate is provided with a guide groove below each of the positioning blocks, and each guide groove is open on its radially outer side. Each positioning block is provided with a guide block that mates with the guide groove on its lower end face.

[0011] Furthermore, the radial outer edge of the guide block is provided with a notch, and the elastic collar is fitted into the notch.

[0012] Furthermore, the circulating cooling water tank is distributed in a meandering pattern along the circumference of the molding cavity.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: This invention provides an automatic pressure quenching mold for disc springs and wave springs, comprising an upper mold and a lower mold that cooperates with the upper mold. The lower mold has a detachable forming cavity, within which a positioning component is provided. The positioning component includes a positioning plate and an expansion / contraction member. The positioning plate is formed by at least two positioning blocks, which are radially slidably disposed within the forming cavity. The expansion / contraction member drives the at least two positioning blocks to expand and contract. When processing disc springs or wave springs, the expansion movement of the positioning blocks in this pressure quenching mold clamps the disc springs or wave springs onto the forming cavity. This ensures dimensional consistency of the processed disc springs or wave springs during subsequent pressing and forming by the pressure quenching mold, solving problems such as misalignment and ellipticity. Attached Figure Description

[0014] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a cross-sectional view of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of a preferred embodiment of the present invention where no expansion or contraction element is provided in the lower mold. Figure 3 This is an exploded view of the lower mold of a preferred embodiment of the present invention without expansion and contraction components. Figure 4 This is a schematic diagram illustrating a preferred embodiment of the present invention, showing a circulating cooling water tank provided on the lower mold. Figure 5 This is a schematic diagram of a preferred embodiment of the present invention, showing a guide block provided on the positioning disk.

[0015] The reference numerals in the attached figures are explained as follows: 1. Lower mold; 2. Molding cavity; 21. Base plate; 22. Baffle wall; 23. Support plate; 3. Positioning component; 31. Positioning disc; 311. Positioning block; 32. Expansion / contraction component; 321. Expansion block; 322. Drive cylinder; 323. Elastic collar; 4. Through hole; 5. Guide block; 6. Guide groove; 7. Notch; 8. Circulating cooling water tank. Detailed Implementation

[0016] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] refer to Figure 1 , Figure 2 and Figure 3 The present invention provides an automatic pressure quenching mold for disc springs and wave springs, including an upper mold (not shown in the figure) and a lower mold 1 that cooperates with the upper mold. A forming cavity 2 is detachably provided on the lower mold 1, and the forming cavity 2 is installed on the lower mold 1 by bolts.

[0020] refer to Figure 1 and Figure 5 On the opposite sides of the upper and lower molds 1, corresponding to the forming cavity 2, there are circulating cooling water tanks 8. The circulating cooling water tanks 8 are distributed in a meandering pattern along the circumference of the forming cavity 2. Through the circulating cooling water tanks 8, after the disc spring or wave spring is processed and formed in this mold, a pressure quenching process can be achieved for the disc spring or wave spring through a certain holding time (i.e., workpiece cooling time). By setting the circulating cooling water tanks 8 in a meandering pattern, the positions where the bolts are fixed on the upper or lower mold 1 can be avoided, and the contact area with the upper and lower molds 1 can be increased, thereby improving the cooling efficiency.

[0021] Among them, reference Figure 1 , Figure 2 and Figure 3 The forming cavity 2 includes a base plate 21, a baffle wall 22 disposed on the upper edge of the base plate 21 and extending circumferentially, and a support plate 23 disposed on the upper surface of the base plate 21. The base plate 21 is circular, the baffle wall 22 is disposed along the circumference of the base plate 21 and forms a concave cavity with the base plate 21, and the diameter of the support plate 23 is smaller than the inner diameter of the baffle wall 22, that is, the support plate 23 is surrounded inside the baffle wall 22. The disc spring or wave spring blank to be processed is placed on the upper surface of the baffle wall 22.

[0022] refer to Figure 1 , Figure 2 and Figure 3 A positioning component 3 is provided inside the molding cavity 2. The positioning component 3 includes a positioning disk 31 and an expansion and contraction component 32. The positioning disk 31 is formed by at least two positioning blocks 311. The at least two positioning blocks 311 are radially slidably disposed on the support plate 23. The upper end surface of the positioning blocks 311 is higher than the upper end surface of the baffle 22. The expansion and contraction component 32 is used to drive the at least two positioning blocks 311 to realize expansion and contraction movements. The center of the positioning disk 31 and the center of the molding cavity 2 are located on the same straight line.

[0023] refer to Figure 1 , Figure 2 and Figure 3During operation, before the disc spring or wave spring to be processed is press-quenched through the press-quenching mold, the disc spring or wave spring is heated. When the disc spring or wave spring is detected to have reached the set temperature, the heated disc spring or wave spring is placed on the upper end face of the baffle 22 by a robotic arm. The positioning plate 31 is embedded in the inner hole of the disc spring or wave spring. At this time, the expansion and contraction member 32 drives the positioning block 311 to expand radially, thereby achieving the clamping and positioning of the disc spring or wave spring. This achieves the purpose of automatically aligning the disc spring or wave spring with the forming mold cavity 2 for concentricity. When the disc spring or wave spring is press-quenched through the press-quenching mold, the consistency of the product size after press-quenching is ensured, solving problems such as misalignment and ovality, and improving the processing quality. The present invention uses six positioning blocks 311. By setting six positioning blocks 311, the positioning and clamping accuracy of the disc spring or wave spring can be further improved.

[0024] refer to Figure 1 , Figure 2 and Figure 3 The expansion / contraction component 32 includes an expansion block 321, a drive cylinder 322, and an elastic collar 323. The radial outer edge of the expansion block 321 is inclined, and the outer diameter of its top edge is larger than that of its bottom edge. A through hole 4 is provided at the center of the positioning disk 31 for the expansion block 321 to pass through. The expansion block 321 is conical, and the shape of the through hole 4 is also conical to match the shape of the expansion block 321. The extension / contraction end of the drive cylinder 322 passes through the lower mold 1, the base plate 21, and the support plate 23 from bottom to top and then connects to the bottom end of the expansion block 321. The elastic collar 323 is fitted on the radial outer edge of the positioning disk 31. When the positioning disc 31 expands, the drive cylinder 322 pulls the expansion block 321 downwards. Under the action of the expansion block 321, the six positioning blocks 311 expand radially in opposite directions, and the elastic collar 323 is in an open state. When contracting, the drive cylinder 322 drives the expansion block 321 to move upwards in the opposite direction. At this time, the six positioning blocks 311 retract under the action of the elastic collar 323. The expansion and contraction component 32 of this structure is simple in structure and convenient and quick to operate. The elastic collar 323 is made of high-temperature resistant material.

[0025] refer to Figure 1 , Figure 3 and Figure 4The support plate 23 is provided with multiple guide grooves 6, each guide groove 6 having an open radial outer side, and the guide groove 6 is located below the corresponding positioning block 311. Each positioning block 311 has a guide block 5 on its lower end face that mates with the guide groove 6. The guide block 5 is radially slidably disposed within the guide groove 6, and a notch 7 is provided on the radial outer edge of the guide block 5. The elastic collar 323 is fitted into the notch 7. The cooperation between the guide block 5 and the guide groove 6 ensures the stability of the positioning block 311's radial movement within the molding cavity 2, preventing skewing and further improving the positioning accuracy of the disc spring or wave spring. The notch 7 provides longitudinal limitation for the elastic collar 323, allowing it to be more securely fitted onto the guide block 5, further improving the accuracy of the positioning block 311's contraction.

[0026] In summary, when processing disc springs or wave springs, the pressure quenching mold of this structure drives the positioning block 311 to expand radially away from each other through the expansion and contraction component 32, thereby achieving the clamping and positioning of the disc spring or wave spring. It can achieve the purpose of automatically aligning the disc spring or wave spring with the forming mold cavity 2 to ensure concentricity. When the disc spring or wave spring is pressure quenched through the pressure quenching mold, the consistency of the product size after pressure quenching can be ensured, and problems such as misalignment and ovality are solved, thus improving the processing quality.

[0027] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic press-quenching mold for disc springs and wave springs, comprising an upper mold and a lower mold (1) cooperating with the upper mold, characterized in that, The lower mold (1) is detachably provided with a molding cavity (2). Circulating cooling water tanks (8) are provided on the opposite sides of the upper mold and the lower mold (1) at positions corresponding to the molding cavity (2). A positioning component (3) is provided inside the molding cavity (2). The positioning component (3) includes: Positioning disk (31), the positioning disk (31) is formed by at least two positioning blocks (311), and the at least two positioning blocks (311) are radially slidably disposed in the molding cavity (2); An expansion and contraction member (32) is used to drive at least two of the positioning blocks (311) to achieve expansion and contraction movements; The molding cavity (2) includes a base plate (21), a baffle (22) disposed on the upper edge of the base plate (21) and disposed along the circumferential direction, and a support plate (23) disposed on the upper surface of the base plate (21). The diameter of the support plate (23) is smaller than the inner diameter of the baffle (22). At least two positioning blocks (311) are radially slidably disposed on the support plate (23). The upper surface of the positioning block (311) is higher than the upper surface of the baffle (22). The expansion / contraction element (32) includes: An expansion block (321) has an inclined radial outer edge surface. The outer diameter of the top edge of the expansion block (321) is larger than the outer diameter of its bottom edge. A through hole (4) is provided at the center of the positioning disk (31) for the expansion block (321) to pass through. The shape of the through hole (4) is adapted to the shape of the expansion block (321). The extension end of the drive cylinder (322) passes through the lower mold (1), the base plate (21), and the support plate (23) from bottom to top and is connected to the bottom end of the expansion block (321); An elastic collar (323) is fitted onto the radial outer edge surface of the positioning disk (31).

2. The automatic press-quenching mold for disc springs and wave springs according to claim 1, characterized in that, The number of positioning blocks (311) is six.

3. The automatic press-quenching die for disc springs and wave springs according to claim 1 or 2, characterized in that, The expansion block (321) is conical in shape, and the shape of the through hole (4) is adapted to the shape of the expansion block (321).

4. The automatic pressing and quenching mold for disc springs and wave springs according to claim 3, characterized in that, The support plate (23) is provided with a guide groove (6) below each of the positioning blocks (311), and each of the guide grooves (6) is open on the radial outer side. Each of the positioning blocks (311) is provided with a guide block (5) that cooperates with the guide groove on the lower end face.

5. The automatic press-quenching die for disc springs and wave springs according to claim 4, characterized in that, The guide block (5) has a notch (7) on its radial outer edge, and the elastic collar (323) is fitted in the notch (7).

6. The automatic press-quenching die for disc springs and wave springs according to claim 1, characterized in that, The circulating cooling water tank is distributed in a meandering pattern along the circumference of the molding cavity (2).

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