Die for hot press molding of disc spring

Abstract

The utility model discloses a die for hot press molding of a disc spring, which relates to the technical field of disc spring production, and particularly comprises a lower die, an upper die and a material receiving frame, and an inner cavity of the lower die is connected with a molding die cavity through a cooling and heating plate; the forming die cavity comprises a cavity fixed to the cooling and heating disc and a jacking cavity bottom, a through hole matched with the jacking cavity bottom is formed in the bottom of an inner cavity of the cavity, and the jacking cavity bottom is connected with the bottom of an inner cavity of the lower die through a fourth hydraulic telescopic rod; a feeding port is formed in one end of the upper die, a groove matched with the forming die cavity is formed in the middle of the bottom of the other end of the upper die, an extrusion plate is movably connected into an inner cavity of the groove, and a cooling and heating plate is fixed to the top of the extrusion plate. According to the die for hot press molding of the disc spring, through the arrangement of the upper die, redundant disc spring production raw materials in the feeding port can be recycled, the production cost of the disc spring is reduced, material handles or burrs can be prevented from appearing on the surface of the disc spring, the surface of the disc spring is kept smooth, and the production quality of the disc spring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disc spring production, in particular to a die for hot pressing of disc springs. Background Art

[0002] Disc spring is the abbreviation of butterfly spring. It has the characteristics of small size, large load, high fatigue life, simple post-maintenance, convenient combination and use, and has the advantage of concentrated load transmission. Disc springs can be produced by hot pressing. When hot pressing is used to produce disc springs, a mold is required. After searching, the prior art discloses a hot pressing mold for producing disc springs by compression. This type of mold generally includes a base and a pressure head. A groove adapted to the disc spring is provided on the base. During molding, the pressure head is inserted into the groove to extrude the softened blank in the groove. However, since the pressure head and the molded part are in a tightly fitted state during the molding process of the disc spring, when the pressure head is separated from the molded part, there is a risk that the molded part will adhere to the pressure head, which is not conducive to demolding. When the molded part moves up with the pressure head, the molded part may fall off at any time, which is dangerous. Moreover, the molded part located in the groove is not easy to take out. Based on this, the present application proposes a mold for hot pressing of disc springs. Utility Model Content

[0003] The utility model provides a die for hot pressing of disc springs, which solves the problems proposed in the above background technology that when the pressure head is separated from the molded part, there is a risk that the molded part adheres to the pressure head, which is not conducive to demoulding, and when the molded part moves up with the pressure head, there is a possibility that the molded part falls off at any time, which is dangerous; and the molded part located in the groove is not easy to take out.

[0004] The utility model provides the following technical solutions: a die for hot pressing of disc springs, comprising a lower die, an upper die and a material receiving frame, wherein the inner cavity of the lower die is connected to a forming die cavity through a cooling and heating plate; a hot fluid channel 1 and a cold fluid channel 1 are alternately arranged in the inner cavity of the cooling and heating plate; the forming die cavity comprises a cavity body fixed to the cooling and heating plate and a lifting cavity bottom, the bottom of the cavity inner cavity is provided with a through hole adapted to the lifting cavity bottom, and the lifting cavity bottom is connected to the bottom of the inner cavity of the lower die through a hydraulic telescopic rod 4;

[0005] A hydraulic telescopic rod 1 is fixed to one side of the lower mold, a hydraulic telescopic rod 2 is fixed to the other end of the hydraulic telescopic rod 1, the other end of the hydraulic telescopic rod 2 is connected to the upper mold, a feed port is provided at one end of the upper mold, a groove adapted to the molding cavity is provided in the middle of the bottom of the other end of the upper mold, an extrusion plate is movably connected to the inner cavity of the groove, a cooling and heating plate is fixed to the top of the extrusion plate, the cooling and heating plate is connected to the top of the inner cavity of the groove through a hydraulic telescopic rod 3, and hot fluid channel 2 and cold fluid channel 2 are alternately arranged in the inner cavity of the cooling and heating plate; a material receiving frame is placed on the side of the lower mold close to the feed port.

[0006] Preferably, a hot fluid inlet pipe 1 and a cold fluid inlet pipe 1 are fixed at both ends of the lower mold, and a hot fluid outlet pipe and a cold fluid outlet pipe are provided on one side of the lower mold; the hot fluid inlet pipe 1 and the hot fluid outlet pipe are respectively connected to a hot fluid channel 1 through pipes, and the cold fluid inlet pipe 1 and the cold fluid outlet pipe are respectively connected to a cold fluid channel 1 through pipes.

[0007] Preferably, four hydraulic telescopic rods are symmetrically arranged at the bottom of the lifting cavity bottom, and the bottom of the lifting cavity bottom is connected to the cooling and heating plate through a thermal pad.

[0008] Preferably, the hydraulic telescopic rod 1 and the hydraulic telescopic rod 2 are in a mutually perpendicular state, and a connecting block is fixed to one end of the hydraulic telescopic rod 2 away from the hydraulic telescopic rod 1, and the other end of the connecting block is fixedly connected to the upper mold.

[0009] Preferably, one end of the upper mold is provided with a hot fluid inlet pipe 2 and a cold fluid inlet pipe 2, and the other end of the upper mold is provided with another hot fluid discharge pipe and another cold fluid discharge pipe; the hot fluid inlet pipe 2 and the other hot fluid discharge pipe are respectively connected to the hot fluid channel 2 through pipes, and the cold fluid inlet pipe 2 and the other cold fluid discharge pipe are respectively connected to the cold fluid channel 2 through pipes.

[0010] Preferably, the top of the lower mold and the bottom of the upper mold are at the same height, and an isolation pad is fixed to the bottom of the upper mold, and the length of the upper mold is twice the length of the lower mold.

[0011] Preferably, limiting grooves are provided on both sides of the inner cavity of the groove, and limiting blocks are movably connected in the inner cavity of the limiting grooves, and the limiting blocks are fixedly connected to the top end of the cooling and heating plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The die for hot-pressing the disc spring can separate the extrusion plate from the formed part by setting the upper die moving mode and horizontally moving the upper die; the hydraulic telescopic rod four and the thermal pad are set, and the contraction of the hydraulic telescopic rod four can change the position of the top-lifting cavity bottom, so that the top-lifting cavity bottom and the formed disc spring can be separated, and the extension of the hydraulic telescopic rod four can drive the top-lifting cavity bottom to move upward, and the top-lifting cavity bottom can drive the disc spring to separate from the cavity and the lower die during the upward movement, that is, the die can realize automatic demolding of the disc spring when in use, which is convenient for taking out the hot-pressed disc spring.

[0014] 2. The die for hot pressing of disc springs can be used to recycle excess raw materials for disc spring production in the feed port through the setting of the upper die, thereby reducing the production cost of the disc springs, avoiding the appearance of material handles or burrs on the surface of the disc springs, keeping the surface of the disc springs smooth, and improving the production quality of the disc springs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the utility model;

[0016] Figure 2 The utility model structure Figure 1 Schematic diagram;

[0017] Figure 3 This is a schematic diagram of the lower mold structure of the utility model;

[0018] Figure 4 The utility model structure Figure 3 Schematic cross-section;

[0019] Figure 5 This is a schematic diagram of the bottom of the upper mold of the utility model structure;

[0020] Figure 6 It is a front view schematic diagram of the upper mold section of the utility model structure.

[0021] In the figure: 1. lower mold; 2. upper mold; 3. material receiving frame; 4. hydraulic telescopic rod 1; 5. hydraulic telescopic rod 2; 6. hot fluid inlet tube 1; 7. cold fluid inlet tube 1; 8. feed port; 9. extrusion plate; 10. connecting block; 11. hot fluid inlet tube 2; 12. hot fluid discharge tube; 13. cold fluid discharge tube; 14. cold fluid inlet tube 2; 15. hydraulic telescopic rod 3; 18. hot fluid channel 2; 19. cold fluid channel 2; 20. limiting groove; 21. limiting block; 22. cavity; 23. hot fluid channel 1; 24. cold fluid channel 1; 26. hydraulic telescopic rod 4; 27. thermal pad; 30. lifting cavity bottom. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a die for hot pressing of disc springs, comprising a lower die 1, an upper die 2 and a material receiving frame 3. A cooling and heating plate is fixed to the inner cavity of the lower die 1, and a hot fluid channel 23 and a cold fluid channel 24 are alternately arranged in the inner cavity of the cooling and heating plate. A hot fluid inlet pipe 6 and a cold fluid inlet pipe 7 are fixed to both ends of the lower die 1, and a hot fluid outlet pipe 12 and a cold fluid outlet pipe 13 are arranged on one side of the lower die 1; the hot fluid inlet pipe 6 and the hot fluid outlet pipe 12 are respectively connected to the hot fluid channel 23 through pipes, and the cold fluid inlet pipe 7 and the cold fluid outlet pipe 13 are respectively connected to the cold fluid channel 24 through pipes. It can be seen from the above description that the hot fluid can enter the hot fluid channel 23 through the hot fluid inlet pipe 6, and the hot fluid can be discharged through the hot fluid outlet pipe 12; the cold fluid can enter the cold fluid channel 24 through the cold fluid inlet pipe 7, and the cold fluid in the cold fluid channel 24 can enter the cold fluid outlet pipe 13.

[0024] A forming mold cavity is fixed in the inner cavity of the cooling and heating plate. The forming mold cavity is adapted to the disc spring to be formed. The forming mold cavity includes a cavity body 22 fixed to the cooling and heating plate and a lifting cavity bottom 30. The bottom of the inner cavity of the cavity body 22 is provided with a through hole adapted to the lifting cavity bottom 30, and the lifting cavity bottom 30 is located in the inner cavity of the through hole.

[0025] The bottom of the lifting cavity bottom 30 is symmetrically provided with a hydraulic telescopic rod four 26, and the other end of the hydraulic telescopic rod four 26 is fixedly connected to the bottom of the inner cavity of the lower mold 1. Through the setting of the hydraulic telescopic rod four 26, the extension and retraction of the hydraulic telescopic rod four 26 can change the height of the lifting cavity bottom 30. The bottom of the lifting cavity bottom 30 is connected to the cooling and heating plate through a thermal pad 27. In some embodiments of the present application, the thermal pad 27 is made of thermally conductive silicone. Through the setting of the thermal pad 27, the thermal pad 27 has a certain elasticity. When the hydraulic telescopic rod four 26 contracts, the lifting cavity bottom 30 connected to the hydraulic telescopic rod four 26 can be separated from the molded part, thereby realizing rapid demolding of the molded part.

[0026] A hydraulic telescopic rod 1 4 is fixed to one side of the lower mold 1, and a hydraulic telescopic rod 2 5 is fixed to the other end of the hydraulic telescopic rod 1 4. The hydraulic telescopic rod 1 4 and the hydraulic telescopic rod 2 5 are in a mutually perpendicular state. A connecting block 10 is fixed to the end of the hydraulic telescopic rod 2 5 away from the hydraulic telescopic rod 1 4, and the other end of the connecting block 10 is fixedly connected to the upper mold 2. Through the arrangement of the hydraulic telescopic rod 1 4 and the hydraulic telescopic rod 2 5, the upper mold 2 can be separated from the lower mold 1 under the action of the hydraulic telescopic rod 2 5, and the upper mold 2 can be moved on the top of the lower mold 1 under the action of the hydraulic telescopic rod 1 4.

[0027] A feed port 8 is provided at one end of the upper mold 2, and the inner diameter of the feed port 8 is larger than the inner diameter of the disc spring to be formed, and the inner diameter of the feed port 8 is smaller than the inner diameter of the top of the cavity 22. Through the setting of the feed port 8, the raw material particles for disc spring production can be injected into the molding film cavity. A groove adapted to the disc spring is provided in the middle of the bottom of the other end of the upper mold 2, and an extrusion plate 9 is movably connected to the inner cavity of the groove, and a cooling and heating plate is fixedly connected to the top of the extrusion plate 9, and the cooling and heating plate is connected to the top of the inner cavity of the groove through a hydraulic telescopic rod 3 15. Through the setting of the hydraulic telescopic rod 3 15, the extension and retraction of the hydraulic telescopic rod 3 15 can change the position of the extrusion plate 9, and the extrusion plate 9 can pressurize the melted raw material in the molding mold so that the raw material can form a disc spring.

[0028] The inner cavity of the groove is provided with a limit groove 20 on both sides, and the inner cavity of the limit groove 20 is movably connected with a limit block 21, and the limit block 21 is fixedly connected to the top of the cooling and heating plate. By setting the limit block 21 and the limit groove 20, the downward position of the extrusion plate 9 can be positioned.

[0029] The top of the lower mold 1 is at the same height as the bottom of the upper mold 2, and an isolation pad is fixed to the bottom of the upper mold 2. The isolation pad can be made of rubber. The setting of the isolation pad can reduce the wear between the upper mold 2 and the lower mold 1, and facilitate the movement of the upper mold 2 on the lower mold 1. The length of the upper mold 2 is twice the length of the lower mold 1. In this way, when the feed port 8 is located on the molding cavity, the upper mold 2 can seal the molding cavity to facilitate the addition of raw materials. When the extrusion plate 9 is located above the molding cavity, the feed port 8 can be located on the outside of the lower mold 1.

[0030] A material receiving frame 3 is placed on one side of the lower mold 1 close to the material feed port 8. The material receiving frame 3 can be used to collect the raw materials in the material feed port 8 to reduce the waste of raw materials.

[0031] From the above description, it can be known that during the process of producing disc springs by the hot pressing molding die, when the upper mold 2 is separated from the lower mold 1 under the action of the hydraulic telescopic rod 2 5, the top of the lower mold 1 can limit the molded parts that may adhere to the bottom of the extrusion plate 9 to prevent the molded parts from adhering to the extrusion plate 9; the extension and retraction of the hydraulic telescopic rod 4 26 can separate the molded parts from the cavity 22 and the lower mold 1, and the molded parts can be moved outside the molding cavity to facilitate the removal of the molded parts.

[0032] The inner cavity of the above-mentioned cooling and heating plate is alternately provided with hot fluid channel 2 18 and cold fluid channel 2 19. One end of the upper mold 2 is provided with hot fluid inlet pipe 2 11 and cold fluid inlet pipe 2 14, and the other end of the upper mold 2 is provided with another hot fluid discharge pipe 12 and another cold fluid discharge pipe 13; the hot fluid inlet pipe 2 11 and the other hot fluid discharge pipe 12 are respectively connected to the hot fluid channel 2 18 through pipes, and the cold fluid inlet pipe 2 14 and the other cold fluid discharge pipe 13 are respectively connected to the cold fluid channel 2 19 through pipes, and the pipes are applicable. In some embodiments of the present application, the pipes are corrugated pipes.

[0033] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0034] To sum up: when the disc spring hot pressing molding mold is used, after the disc spring production raw materials are injected into the molding cavity through the feed port 8, the upper mold 2 moves on the lower mold 1 under the action of the hydraulic telescopic rod 4 until the extrusion plate 9 moves to the top of the molding cavity. During the movement, the upper mold 2 takes away the raw materials on the top of the jacking cavity bottom 30. When the upper mold 2 stops moving, the raw materials in the feed port 8 fall into the receiving frame 3 under the action of gravity, thereby realizing the collection of raw materials and avoiding waste of raw materials.

[0035] The hot fluid for heating the raw material is injected into the hot fluid inlet pipe 1 6 and the hot fluid inlet pipe 2 11. In the process of the hot fluid moving in the hot fluid channel 1 23 and the hot fluid channel 2 18, the hot fluid exchanges heat with the raw material to heat the raw material. After the raw material is melted, the hydraulic telescopic rod 3 15 drives the extrusion plate 9 to move downward, and the extrusion plate 9 pressurizes the raw material. After the raw material is compressed, the cold fluid flows in the cold fluid channel to cool the raw material. After the raw material is cooled and formed, the hydraulic telescopic rod 3 15 drives the extrusion plate 9 to reset. After the upper mold 2 is separated from the lower mold 1 under the action of the hydraulic telescopic rod 2 5, the hydraulic telescopic rod 4 26 contracts first, so that the lifting cavity bottom 30 is separated from the molded part, and the hydraulic telescopic rod 4 26 extends again. During the process of the lifting cavity bottom 30 driving the molded part to move upward, the molded part is separated from the cavity 22 and the lower mold 1, thereby realizing the demolding of the molded part, which is convenient for the removal of the molded part.

[0036] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A die for hot pressing of disc springs, comprising a lower die (1), an upper die (2) and a material receiving frame (3), characterized in that: The inner cavity of the lower mold (1) is connected to the molding cavity via a cooling and heating plate; a hot fluid channel (23) and a cold fluid channel (24) are alternately arranged in the inner cavity of the cooling and heating plate; the molding cavity comprises a cavity body (22) fixed to the cooling and heating plate and a lifting cavity bottom (30); the bottom of the inner cavity of the cavity body (22) is provided with a through hole adapted to the lifting cavity bottom (30); the lifting cavity bottom (30) is connected to the bottom of the inner cavity of the lower mold (1) via a hydraulic telescopic rod four (26); A hydraulic telescopic rod 1 (4) is fixed to one side of the lower mold (1), a hydraulic telescopic rod 2 (5) is fixed to the other end of the hydraulic telescopic rod 1 (4), the other end of the hydraulic telescopic rod 2 (5) is connected to the upper mold (2), a feed port (8) is provided at one end of the upper mold (2), a groove adapted to the molding cavity is provided in the middle of the bottom of the other end of the upper mold (2), an extrusion plate (9) is movably connected to the inner cavity of the groove, a cooling and heating plate is fixed to the top of the extrusion plate (9), the cooling and heating plate is connected to the top of the inner cavity of the groove via a hydraulic telescopic rod 3 (15), and a hot fluid channel 2 (18) and a cold fluid channel 2 (19) are alternately provided in the inner cavity of the cooling and heating plate; a material receiving frame (3) is placed on the side of the lower mold (1) close to the feed port (8).

2. The die for hot pressing of disc springs according to claim 1, characterized in that: A hot fluid inlet pipe (6) and a cold fluid inlet pipe (7) are fixed at both ends of the lower mold (1), and a hot fluid outlet pipe (12) and a cold fluid outlet pipe (13) are provided on one side of the lower mold (1); the hot fluid inlet pipe (6) and the hot fluid outlet pipe (12) are respectively connected to a hot fluid channel (23) through pipes, and the cold fluid inlet pipe (7) and the cold fluid outlet pipe (13) are respectively connected to a cold fluid channel (24) through pipes.

3. The die for hot pressing of disc springs according to claim 1, characterized in that: The bottom of the lifting cavity bottom (30) is symmetrically provided with four hydraulic telescopic rods (26), and the bottom of the lifting cavity bottom (30) is connected to the cooling and heating plate via a thermal pad (27).

4. The die for hot pressing of disc springs according to claim 1, characterized in that: The hydraulic telescopic rod 1 (4) and the hydraulic telescopic rod 2 (5) are in a mutually perpendicular state; one end of the hydraulic telescopic rod 2 (5) away from the hydraulic telescopic rod 1 (4) is fixed with a connecting block (10); the other end of the connecting block (10) is fixedly connected to the upper mold (2).

5. The die for hot pressing of disc springs according to claim 1, characterized in that: One end of the upper mold (2) is provided with a second hot fluid inlet pipe (11) and a second cold fluid inlet pipe (14), and the other end of the upper mold (2) is provided with another hot fluid discharge pipe (12) and another cold fluid discharge pipe (13); the second hot fluid inlet pipe (11) and the other hot fluid discharge pipe (12) are respectively connected to the second hot fluid channel (18) through pipes, and the second cold fluid inlet pipe (14) and the other cold fluid discharge pipe (13) are respectively connected to the second cold fluid channel (19) through pipes.

6. The die for hot pressing of disc springs according to claim 1, characterized in that: The top of the lower mold (1) and the bottom of the upper mold (2) are at the same height, and an isolation pad is fixed to the bottom of the upper mold (2). The length of the upper mold (2) is twice the length of the lower mold (1).

7. The die for hot pressing of disc springs according to claim 1, characterized in that: Limiting grooves (20) are provided on both sides of the inner cavity of the groove, and a limiting block (21) is movably connected in the inner cavity of the limiting groove (20), and the limiting block (21) is fixedly connected to the top end of the cooling and heating plate.

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