Automatic pressure quenching die for disc spring and wave spring products

Abstract

The invention relates to an automatic pressure quenching die for disc spring and wave spring products, relates to the technical field of machining dies, and solves the problems that when an existing pressure quenching die is used for machining disc springs and wave springs, product positioning is poor, formed products have the defects of deviation and large ovality, and the rate of finished products is low. A forming die cavity is formed in the lower die, circulating cooling water tanks are formed in the opposite side faces of the upper die and the lower die, a positioning assembly is arranged in the forming die cavity and comprises a positioning disc and an expansion and contraction piece, the positioning disc is defined by at least two positioning blocks, and the at least two positioning blocks are arranged in the forming die cavity in a radial sliding mode; the expansion and contraction piece is used for driving the at least two positioning blocks to realize expansion and contraction movement; the device has the advantages that the purpose of automatically aligning the concentricity of the disc spring or the wave spring and the forming die cavity is achieved, the consistency of the sizes of products formed through pressure quenching can be guaranteed, the problems of deviation, ovality and the like are solved, and the machining quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing molds, in particular to an automatic press-quenching mold for disc spring and wave spring products. Background Art

[0002] The existing patent announcement number "CN203778594U" announces a press quenching die for butterfly springs and wave springs, which is a mechanical processing die. The butterfly springs made by existing stamping are prone to large deformation, which leads to the scrapping of the disc springs. The upper die of the present invention is assembled on the upper base plate, and an upper lining plate is provided between the upper base plate and the upper die; the lower die is assembled on the lower base plate, and a lower lining plate is provided between the lower base plate and the lower die. The upper end face of the upper die is provided with an annular groove downward, and the upper end face of the upper die is sealed and contacted with the upper lining plate to form a circulating cooling cavity of the upper die; the lower end face of the lower die is provided with an annular groove upward, and the lower end face of the lower die is sealed and contacted with the lower lining plate to form a circulating cooling cavity of the lower die.

[0003] The above description has the following problems: when disc springs and wave springs are processed through this press quenching die, product positioning is poor, the formed products have defects such as deviation and large ovality, and the yield rate is low. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic press quenching die for disc springs and wave springs, which solves the problems of poor product positioning, deviation of the formed products, large ovality and low yield rate when the existing press quenching die is used to process disc springs and wave springs.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides an automatic press quenching die for disc spring and wave spring products, comprising an upper die and a lower die cooperating with the upper die, wherein the lower die is detachably provided with a forming cavity, and circulating cooling water grooves are provided on opposite sides of the upper die and the lower die at positions corresponding to the forming cavity, and a positioning assembly is provided in the forming cavity, wherein the positioning assembly comprises: A positioning plate, the positioning plate being enclosed by at least two positioning blocks, and the at least two positioning blocks being radially slidably disposed in the molding cavity; An expansion and contraction member 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 retaining wall arranged on the edge of the upper end surface of the base plate and arranged along the circumferential direction, and a support plate arranged on the upper end surface of the base plate, the diameter of the support plate is smaller than the inner diameter of the retaining wall, at least two of the positioning blocks are radially slidably arranged on the support plate, and the upper end surface of the positioning block is higher than the upper end surface of the retaining wall.

[0007] Furthermore, the expansion and contraction member includes: an expansion block, wherein the radial outer edge of the expansion block is arranged in an inclined surface, the diameter of the top outer edge of the expansion block is larger than the diameter of the bottom outer edge, and a through hole for the expansion block to pass through is provided at the center of the positioning plate; A driving cylinder, wherein the telescopic end of the driving cylinder passes through the lower mold, the bottom plate, the supporting plate in sequence from bottom to top and is connected to the bottom end of the expansion block; An elastic ring is sleeved on the radial outer edge surface of the positioning disk.

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

[0009] Furthermore, the expansion block is arranged in a conical 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 positioning block, the radial outer side of each guide groove is open, and the lower end surface of each positioning block is provided with a guide block that cooperates with the guide groove.

[0011] Furthermore, a radial outer edge surface of the guide block is provided with a notch, and the elastic ring is sleeved in the notch.

[0012] Furthermore, the circulating cooling water trough is distributed in a zigzag manner along the circumference of the forming cavity.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides an automatic press-quenching die for disc spring and wave spring products, comprising an upper die and a lower die cooperating with the upper die, the lower die being detachably provided with a forming cavity, the forming cavity being provided with a positioning assembly, the positioning assembly comprising a positioning disk and an expansion and contraction member, the positioning disk being enclosed by at least two positioning blocks, at least two of which are radially slidably arranged in the forming cavity; the expansion and contraction member being used to drive at least two of the positioning blocks to achieve expansion and contraction movements. When the press-quenching die of this structure is used to process disc springs or wave springs, the positioning blocks in the positioning assembly undergo expansion movements, thereby clamping the disc springs or wave springs to the forming cavity. When the disc springs or wave springs are subsequently press-formed by the press-quenching die, the consistency of the dimensions of the processed disc springs or wave springs can be ensured, thereby solving problems such as misalignment and ovality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 is a cross-sectional view of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a schematic structural diagram of a preferred embodiment of the present invention in which no expansion and contraction member is provided in the lower mold; Figure 3 This is an exploded view of the structure of the preferred embodiment of the present invention in which no expansion and contraction parts are provided in the lower mold; Figure 4 This is a schematic structural diagram showing a preferred embodiment of the present invention in which a circulating cooling water tank is provided on the lower mold; Figure 5 It is a structural schematic diagram showing that a guide block is provided on a positioning plate in a preferred embodiment of the present invention.

[0015] The description of the accompanying drawings is as follows: 1. Lower mold; 2. Molding cavity; 21. Bottom plate; 22. Retaining wall; 23. Support plate; 3. Positioning assembly; 31. Positioning plate; 311. Positioning block; 32. Expansion and contraction member; 321. Expansion block; 322. Driving cylinder; 323. Elastic ring; 4. Through hole; 5. Guide block; 6. Guide groove; 7. Notch; 8. Circulating cooling water tank. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present 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] In addition, 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 , an automatic press quenching die for disc spring and wave spring products provided by the present invention, includes an upper die (not shown in the figure) and a lower die 1 cooperating with the upper die, and a forming cavity 2 is detachably provided on the lower die 1, and the forming cavity 2 is mounted on the lower die 1 by bolts.

[0020] refer to Figure 1 and Figure 5 Circulating cooling water channels 8 are located on the opposing sides of the upper and lower dies 1, corresponding to the mold cavity 2. These channels 8 are arranged in a zigzag pattern along the circumference of the mold cavity 2. This arrangement allows the disc spring or wave spring to be press-quenched after forming it in the mold, after a certain dwell time (i.e., workpiece cooling time). The zigzag arrangement of the circulating cooling water channels 8 avoids the bolted areas on the upper or lower dies 1, increasing the contact area with the upper and lower dies 1 and improving cooling efficiency.

[0021] Among them, reference Figure 1 、 Figure 2 and Figure 3 The molding cavity 2 includes a bottom plate 21, a baffle wall 22 arranged on the edge of the upper end surface of the bottom plate 21 and extending along the circumferential direction, and a supporting plate 23 arranged on the upper end surface of the bottom plate 21, wherein the bottom plate 21 is arranged in a circular shape, the baffle wall 22 is arranged along the circumference of the bottom plate 21 and forms a concave cavity with the bottom plate 21, and the diameter of the supporting plate 23 is smaller than the inner diameter of the baffle wall 22, that is, the supporting plate 23 is surrounded by the baffle wall 22, and the disc spring or wave spring blank to be processed is placed on the upper end surface of the baffle wall 22.

[0022] refer to Figure 1 、 Figure 2 and Figure 3 A positioning assembly 3 is provided in the molding cavity 2. The positioning assembly 3 includes a positioning disk 31 and an expansion and contraction member 32. The positioning disk 31 is surrounded by at least two positioning blocks 311. At least two positioning blocks 311 are radially slidably arranged on the supporting plate 23. The upper end surface of the positioning block 311 is higher than the upper end surface of the retaining wall 22; the expansion and contraction member 32 is used to drive at least two positioning blocks 311 to realize expansion and contraction movements. The center of the positioning disk 31 is located on the same straight line as the center of the molding cavity 2.

[0023] refer to Figure 1 、 Figure 2 and Figure 3During operation, before the disc spring or wave spring to be processed is press-quenched by the press-quenching die, the disc spring or wave spring to be processed is heated. When it is detected that the disc spring or wave spring has been heated to the set temperature, the heated disc spring or wave spring to be processed is placed on the upper end surface of the retaining wall 22 by a manipulator. 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 in the radial direction, thereby achieving the purpose of clamping and positioning the disc spring or wave spring. At this time, the disc spring or wave spring can be automatically aligned with the forming cavity 2 for the purpose of concentricity. When the disc spring or wave spring is press-quenched by the press-quenching die, the consistency of the product size after press-quenching can be ensured, and problems such as deviation and ovality can be solved, thereby improving the processing quality. The number of positioning blocks 311 in the present invention is six. By providing 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 and contraction member 32 includes an expansion block 321, a driving cylinder 322, and an elastic collar 323. The radial outer edge of the expansion block 321 is inclined, with the top outer edge diameter of the expansion block 321 being larger than the bottom outer edge diameter. 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 in shape, and the through hole 4 is also conical in shape to match the shape of the expansion block 321. The telescopic end of the driving cylinder 322 passes through the lower mold 1, the base plate 21, and the support plate 23 in sequence from bottom to top, before connecting to the bottom end of the expansion block 321. The elastic collar 323 is sleeved on the radial outer edge of the positioning disk 31. When the positioning disc 31 is expanded, the cylinder 322 drives the expansion block 321 downward, causing the six positioning blocks 311 to expand radially in opposite directions, with the elastic collar 323 in an open position. When the positioning disc 31 is contracted, the cylinder 322 drives the expansion block 321 upward in the opposite direction, causing the six positioning blocks 311 to retract under the action of the elastic collar 323. This expansion and contraction member 32 has a simple structure and is quick and easy 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 a plurality of guide grooves 6. The radial outer side of each guide groove 6 is open and located below the corresponding positioning block 311. The lower end surface of each positioning block 311 is provided with a guide block 5 that cooperates with the guide groove 6. The guide block 5 is radially slidably arranged within the guide groove 6. The radial outer edge surface of the guide block 5 is provided with a notch 7. The elastic ring 323 is sleeved in the notch 7. The cooperation between the guide block 5 and the guide groove 6 ensures the stability of the radial movement of the positioning block 311 within the molding cavity 2, making it less likely to deflect, further improving the positioning accuracy of the disc spring or wave spring. The notch 7 can achieve longitudinal limitation of the elastic ring 323, allowing the elastic ring 323 to be more firmly sleeved on the guide block 5, further improving the contraction accuracy of the positioning block 311.

[0026] To sum up: when the press-quenching die of this structure is processing the disc spring or wave spring, the expansion and contraction part 32 drives the positioning block 311 to realize expansion movement in the radial direction, thereby realizing the clamping positioning of the disc spring or wave spring, and can achieve the purpose of automatically aligning the concentricity of the disc spring or wave spring and the forming cavity 2. When the disc spring or wave spring is press-quenched by the press-quenching die, the consistency of the product size after press-quenching can be ensured, and the problems of deviation and ovality can be solved, thereby 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 people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic press quenching die for disc spring and wave spring products, comprising an upper die and a lower die (1) cooperating with the upper die, characterized in that: The lower mold (1) is detachably provided with a forming cavity (2), and the upper mold and the lower mold (1) are provided with circulating cooling water tanks (8) at positions corresponding to the forming cavity (2) on the opposite sides thereof. A positioning assembly (3) is provided in the forming cavity (2), and the positioning assembly (3) comprises: A positioning plate (31), the positioning plate (31) being enclosed by at least two positioning blocks (311), and the at least two positioning blocks (311) being radially slidably disposed in the molding cavity (2); An expansion and contraction member (32), wherein the expansion and contraction member (32) is used to drive at least two positioning blocks (311) to achieve expansion and contraction movements.

2. The automatic press quenching die for disc springs and wave springs according to claim 1, characterized in that: The molding cavity (2) comprises a base plate (21), a retaining wall (22) arranged at the edge of the upper end surface of the base plate (21) and arranged along the circumferential direction, and a supporting plate (23) arranged at the upper end surface of the base plate (21), wherein the diameter of the supporting plate (23) is smaller than the inner diameter of the retaining wall (22), and at least two positioning blocks (311) are radially slidably arranged on the supporting plate (23), and the upper end surface of the positioning block (311) is higher than the upper end surface of the retaining wall (22).

3. The automatic press quenching die for disc springs and wave springs according to claim 2, characterized in that: The expansion and contraction member (32) comprises: An expansion block (321), wherein the radial outer edge surface of the expansion block (321) is arranged in an inclined surface, the outer edge diameter of the top end of the expansion block (321) is larger than the outer edge diameter of the bottom end thereof, and a through hole (4) for the expansion block (321) to pass through is provided at the center position of the positioning plate (31); A driving cylinder (322), wherein the telescopic end of the driving cylinder (322) passes through the lower mold (1), the bottom plate (21), the supporting plate (23) in sequence from bottom to top and is connected to the bottom end of the expansion block (321); An elastic ring (323) is sleeved on the radial outer edge surface of the positioning plate (31).

4. The automatic press quenching die for disc springs and wave springs according to claim 2 or 3, characterized in that: The number of the positioning blocks (311) is six.

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

6. The automatic press quenching die for disc springs and wave springs according to claim 4, characterized in that: The support plate (22) is provided with a guide groove (6) below each positioning block (311), the radial outer side of each guide groove (6) is open, and the lower end surface of each positioning block (311) is provided with a guide block (5) that cooperates with the guide groove.

7. The automatic press quenching die for disc springs and wave springs according to claim 6, characterized in that: A notch (7) is provided on the radial outer edge surface of the guide block (5), and the elastic ring (323) is sleeved in the notch (7).

8. The automatic press quenching die for disc springs and wave springs according to claim 1, characterized in that: The circulating cooling water trough is distributed in a zigzag manner along the circumference of the forming cavity (2).

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