Disc spring forging and pressing die with long service life

Abstract

The invention belongs to the technical field of forging and pressing, and discloses a long-life disc spring forging and pressing die which comprises an operation table, a downward pressing mechanism is installed on one side of the top of the operation table, the downward pressing mechanism and a demolding mechanism are arranged to be matched, an air cylinder is started, and the output end of the air cylinder pushes an upper die to move downwards; and the air cylinder drives the upper mold to move downwards, when the upper mold makes contact with the inner mold, the T-shaped plate can be driven to move downwards, the T-shaped plate moves downwards to the position below the two clamping plates, the two clamping blocks can be driven to clamp the T-shaped plate due to the elastic force of the telescopic spring, and after forming is completed, the T-shaped plate is driven to move downwards to the position below the two clamping plates. The air cylinder drives the upper mold to move upwards, in the ascending process of the upper mold, the T-shaped plate is driven to move upwards through connection with the T-shaped plate, in the ascending process of the T-shaped plate, the inner mold can be driven to move upwards, the inner mold is separated from a formed product, the shifting knob moves towards the two sides, the clamping block is separated from the T-shaped plate, and demolding is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of forging, in particular to a disc spring forging die with a long service life. Background Art

[0002] The long-life disc spring forging die is based on the ordinary disc spring forging die. By optimizing the die material, structural design, heat treatment process and other factors, it can withstand more forging operations without failure (such as cracking, wear, deformation, etc.). This die can maintain a good working condition during the long-term and large-scale disc spring production process, effectively reduce production costs and improve production efficiency. Long-life disc spring forging dies are often needed in forging machine tools.

[0003] Before forging, the die is preheated to reduce the thermal stress during the forging process and increase the life of the die. A suitable lubricant is selected and applied to the die surface to reduce friction resistance and facilitate demolding. The heated metal material is placed in the die and punched into the shape of a disc spring by the pressure of the forging press. The stamped disc spring is heat treated, such as quenching and tempering, to improve its hardness and fatigue strength. Measures need to be taken to prevent distortion during the heat treatment process, such as using a fixture for pressure quenching and pressure tempering. When the disc spring cools to a certain degree, the demolding mechanism of the die, such as a push rod or a push plate, is activated to initially push it out of the die.

[0004] During forging, the forging machine continuously applies pressure to further deform the metal blank in the die cavity until the desired forging shape and size are achieved. When forging is completed, the forging machine drives the upper die to move upward and separate from the lower die. The ejector pin is pushed upward by the elastic force of the spring or other mechanical devices to eject the forging from the lower die. However, this method cannot effectively prevent the relative displacement between the dies during the forging process. The product size deviation and irregular shape caused by die misalignment reduce the consistency and reliability of the product. Summary of the invention

[0005] In order to solve the problem that the method proposed in the above background technology cannot effectively prevent the relative displacement between dies during the forging process, and the product size deviation and irregular shape caused by die misalignment, which reduces the consistency and reliability of the product, the present invention provides a disc spring forging die with a long life.

[0006] To achieve the above object, the present invention provides the following technical solution: a long-life disc spring forging die, comprising an operating table, a pressing mechanism is installed on one side of the top of the operating table, a lower die is installed on the top of the operating table, a positioning mechanism is provided at the bottom of the lower die, and a demoulding mechanism is provided inside the lower die;

[0007] The positioning mechanism comprises a clamping plate arranged on one side of the lower mold, a connecting rod is arranged on one side of the clamping plate, one end of the connecting rod is fixedly connected to a toothed plate, and the toothed plate is meshedly connected to a gear;

[0008] The demoulding mechanism includes an inner mold located inside the lower mold, and both ends of the inner mold are provided with clamping blocks, one side of the clamping block is fixedly connected with a telescopic spring, and the other side of the clamping block is slidably connected with a T-shaped plate.

[0009] Preferably, the bottom surface of the operating table is provided with supporting legs in a rectangular array, the number of the supporting legs is four, and the top surfaces of the four supporting legs are all connected to the bottom surface of the operating table.

[0010] Preferably, the pressing mechanism includes a bracket, a fixing seat, a cylinder and an upper mold, the fixing seat is fixedly connected to one end of the bracket, one end of the cylinder passes through the bracket and is fixedly connected to the inside of the fixing seat, and the upper mold is connected to the output end of the cylinder.

[0011] Preferably, a protective pad is fixedly connected to the inner side of the splint by bolts, and the number of the splints, connecting rods and tooth plates is two, and the opposite sides of the two splints are respectively connected to the other ends of the two connecting rods, and the gear is meshed and connected between the two tooth plates.

[0012] Preferably, a fixed cover is installed on the bottom surface of the operating table, a driving motor is fixedly installed on the bottom surface of the fixed cover, an output end of the driving motor is connected to a gear, and a sliding groove adapted to the clamping plate is also provided on the top surface of the operating table.

[0013] Preferably, one end of each of the two tooth plates is fixedly connected to a return spring, and one end of the return spring is connected to the inner wall of the operating table.

[0014] Preferably, the bottom surface of the bracket is fixedly connected to one side of the top surface of the operating table, inclined plates are installed on both sides of the bracket, and the output end of the cylinder is fixedly connected to the top surface of the upper mold through a fixing block.

[0015] Preferably, the size of the inner mold is matched with the size of the upper mold, a knob is fixedly connected to the top of the block, a gasket is fixedly connected to one end of the telescopic spring, and one side of the gasket is fixedly connected to the inner mold.

[0016] Preferably, the T-shaped plate is slidably connected to the inside of the two blocks, and when the T-shaped plate slides to the bottom of the two blocks, it will be resisted by the two blocks, and one side of the top of the T-shaped plate is connected to one side of the upper mold.

[0017] Preferably, a first stopper is fixedly connected to the middle of both ends of the inner mold, a compression spring is fixedly connected to the bottom of the first stopper, a second stopper is fixedly connected to the bottom of the compression spring, and one side of the second stopper is connected to the inner mold.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention cooperates with structures such as a pressing mechanism and a demoulding mechanism to start the cylinder. The output end of the cylinder pushes the upper mold to move downward, and cooperates with the lower mold to mold the material. The cylinder drives the upper mold to move downward. When the upper mold contacts the inner mold, it drives the T-plate to move downward. The T-plate moves downward to the bottom of the two clamping plates. Due to the elastic force of the telescopic spring, the two clamping blocks will clamp the T-plate. After the molding is completed, the cylinder drives the upper mold to move upward. During the rising process of the upper mold, the T-plate is driven to move upward through the connection with the T-plate. The T-plate drives the inner mold to move upward during the rising process. The inner mold is separated from the formed product, and the knob is moved to both sides to separate the clamping block from the T-plate to achieve demoulding. When the upper mold contacts the inner mold, the T-plate is driven downward, and then the clamping block clamps the T-plate under the action of the telescopic spring. This process effectively prevents the relative displacement between the molds during the forging process, avoids product size deviation, irregular shape and other problems caused by mold misalignment, and improves the consistency and reliability of the product. After molding is completed, the cylinder drives the upper mold to move upward, and drives the inner mold to move upward through the connection with the T-plate, so that the inner mold is separated from the formed product and automatic demoulding is achieved.

[0020] The present invention starts the driving motor through the setting of the positioning mechanism, and the driving motor drives the gear to rotate. The gear meshes with the tooth plates on both sides, so that the two tooth plates are close to each other, thereby driving the two clamping plates to move along the slide groove on the top surface of the operating table, and clamping and positioning the lower mold. The driving motor drives the gear and the tooth plate, so that the clamping plate clamps and positions the lower mold, and the position of the material can be accurately fixed. In this way, in the subsequent forging and other processing processes, the material will not be displaced due to pressure, thereby ensuring the size accuracy and shape accuracy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall disassembly of the present invention;

[0023] Figure 3 It is a front view structural schematic diagram of the present invention;

[0024] Figure 4 It is a schematic diagram of the positioning mechanism and demoulding mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention;

[0026] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 It is a schematic diagram of the demoulding mechanism of the present invention.

[0028] In the figure: 1. operating table; 2. pressing mechanism; 21. bracket; 22. fixing seat; 23. cylinder; 24. upper mold; 3. lower mold; 4. positioning mechanism; 41. clamping plate; 411. protective pad; 42. connecting rod; 43. tooth plate; 431. reset spring; 44. gear; 5. demoulding mechanism; 51. inner mold; 52. block; 521. knob; 53. telescopic spring; 54. T-plate; 55. first stopper; 56. compression spring; 6. driving motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 7 As shown, the present invention provides a long-life disc spring forging die, comprising an operating table 1, a pressing mechanism 2 is installed on one side of the top of the operating table 1, a lower die 3 is installed on the top of the operating table 1, a positioning mechanism 4 is arranged at the bottom of the lower die 3, and a demoulding mechanism 5 is arranged inside the lower die 3;

[0031] The positioning mechanism 4 includes a clamping plate 41 disposed on one side of the lower mold 3, a connecting rod 42 is disposed on one side of the clamping plate 41, one end of the connecting rod 42 is fixedly connected to a toothed plate 43, and the toothed plate 43 is meshedly connected to a gear 44;

[0032] The demoulding mechanism 5 includes an inner mold 51 located inside the lower mold 3 . Both ends of the inner mold 51 are provided with clamping blocks 52 . A telescopic spring 53 is fixedly connected to one side of the clamping block 52 , and a T-plate 54 is slidably connected to the other side of the clamping block 52 .

[0033] The operating table 1 provides a stable working platform for installing the pressing mechanism 2, the lower mold 3 and other related components. The supporting legs are distributed in a rectangular array to provide a stable support for the operating table 1, ensuring that the operating table 1 will not shake during the forging process, and ensuring the processing accuracy. By setting the cooperation of the pressing mechanism 2 and the demoulding mechanism 5 and other structures, the cylinder 23 is started, and the output end of the cylinder 23 pushes the upper mold 24 to move downward, and cooperates with the lower mold 3 to mold the material. The cylinder 23 drives the upper mold 24 to move downward. When the upper mold 24 contacts the inner mold 51, it will drive the T-plate 54 to move downward. The T-plate 54 moves downward to the bottom of the two clamping plates. Due to the elastic force of the telescopic spring 53, the two clamping blocks 52 will clamp the T-plate 54. After the molding is completed, the cylinder 23 drives the upper mold 24 to move upward. During the rising process of the upper mold 24 , the T-plate 54 is driven to move upward through the connection with the T-plate 54. The T-plate 54 will drive the inner mold 51 to move upward during the rising process, so that the inner mold 51 is separated from the molded product, and the knob 521 is moved to both sides to separate the clamping block 52 from the T-plate 54 to achieve demoulding. When the upper mold 24 contacts the inner mold 51, it drives the T-plate 54 to move downward, and then the clamping block 52 clamps the T-plate 54 under the action of the telescopic spring 53. This process effectively prevents the relative displacement between the molds during the forging process, avoids the product size deviation, irregular shape and other problems caused by mold misalignment, and improves the consistency and reliability of the product. After the molding is completed, the cylinder 23 drives the upper mold 24 to move upward, and drives the inner mold 51 to move upward through the connection with the T-plate 54, so that the inner mold 51 is separated from the molded product, and automatic demoulding is achieved.

[0034] like Figures 1 to 7 As shown, the bottom surface of the operating table 1 is provided with supporting legs in a rectangular array, and there are four supporting legs. The top surfaces of the four supporting legs are all connected to the bottom surface of the operating table 1. The pressing mechanism 2 includes a bracket 21, a fixing seat 22, a cylinder 23 and an upper mold 24. The fixing seat 22 is fixedly connected to one end of the bracket 21, one end of the cylinder 23 passes through the bracket 21 and is fixedly connected to the inside of the fixing seat 22, the upper mold 24 is connected to the output end of the cylinder 23, and a protective pad 411 is fixedly connected to the inner side of the splint 41 by bolts. There are two splints 41, connecting rods 42 and tooth plates 43. The opposite sides of the two splints 41 are respectively connected to the other ends of the two connecting rods 42, and the gear 44 is meshed and connected between the two tooth plates 43. A fixed cover is installed on the bottom surface of the operating table 1, and a drive motor 6 is fixedly installed on the bottom surface of the fixed cover. The output end of the drive motor 6 is connected to the gear 44, and a slide groove adapted to the splint 41 is also provided on the top surface of the operating table 1.

[0035] The bracket 21 provides installation support for the fixed seat 22 and the cylinder 23 to ensure that the cylinder 23 remains stable during operation. The inclined plates on both sides can enhance the structural stability of the bracket 21 to prevent the bracket 21 from deforming when subjected to force. The fixed seat 22 fixes one end of the cylinder 23 so that the cylinder 23 can be firmly installed on the bracket 21 to ensure that the cylinder 23 will not loosen during operation. The cylinder 23 provides power to push the upper die 24 up and down to achieve forging of the material. The upper die 24 cooperates with the lower die 3 to forge the material to form the desired product shape. The positioning mechanism 4 is set up to start the driving motor 6. The driving motor 6 drives the gear 44 to rotate. The gear 44 meshes with the tooth plates 43 on both sides, so that the two tooth plates 43 are close to each other, thereby driving the two clamping plates 41 to move along the slide groove on the top surface of the operating table 1 to clamp and position the lower mold 3. The driving motor 6 drives the gear 44 and the tooth plate 43, so that the clamping plate 41 clamps and positions the lower mold 3, which can accurately fix the position of the material. In this way, in the subsequent forging and other processing processes, the material will not be displaced due to pressure, thereby ensuring the size accuracy and shape accuracy of the product.

[0036] like Figures 1 to 7 As shown, one end of the two tooth plates 43 is fixedly connected to a return spring 431, one end of the return spring 431 is connected to the inner wall of the operating table 1, the bottom surface of the bracket 21 is fixedly connected to one side of the top surface of the operating table 1, and inclined plates are installed on both sides of the bracket 21. The output end of the cylinder 23 is fixedly connected to the top surface of the upper mold 24 through a fixed block. The size of the inner mold 51 is adapted to the size of the upper mold 24. The top of the clamping block 52 is fixedly connected to a knob 521, and one end of the telescopic spring 53 is fixedly connected to a gasket, and the gasket One side of the sheet is fixedly connected to the inner mold 51, and the T-plate 54 is slidably connected to the inside of the two blocks 52, and when the T-plate 54 slides to the bottom of the two blocks 52, it will be resisted by the two blocks 52, and one side of the top of the T-plate 54 is connected to one side of the upper mold 24, and the middle of both ends of the inner mold 51 are fixedly connected with a first stopper 55, and the bottom surface of the first stopper 55 is fixedly connected with a compression spring 56, and the bottom surface of the compression spring 56 is fixedly connected with a second stopper, and one side of the second stopper is connected to the inner mold 51.

[0037] The clamping plate 41 clamps the material and positions it to prevent the material from moving during the forging process. The inner protective pad 411 can protect the surface of the material from being clamped, while increasing friction and improving the clamping effect. The connecting rod 42 connects the clamping plate 41 and the toothed plate 43, and transmits the movement of the toothed plate 43 to the clamping plate 41 to achieve the movement of the clamping plate 41. The toothed plate 43 meshes with the gear 44 and realizes horizontal movement under the rotation of the gear 44, thereby driving the clamping plate 41 to clamp or release. The gear 44 is driven by the driving motor 6 and controls the movement of the clamping plate 41 by meshing with the toothed plate 43. , to achieve the positioning of the material, the inner mold 51 cooperates with the upper mold 24 to form the internal shape of the product. During the demolding process, the upward movement of the inner mold 51 can separate the product from the lower mold 3, which is convenient for taking out the product. During the demolding process, the block 52 compresses the telescopic spring 53 under the push of the T-plate 54. When the T-plate 54 slides to the bottom of the block 52, the block 52 presses against the T-plate 54, so that the inner mold 51 moves upward with the T-plate 54 to achieve demolding. During the demolding process, the telescopic spring 53 is compressed to provide a restoring force for the block 52. When demolding is completed, the restoring force of the telescopic spring 53 can make the block 52 return to the initial position to prepare for the next demolding. The T-plate 54 is connected to the upper mold 24, and pushes the block 52 during the rising process to realize the demolding operation. When the T-plate 54 slides to the bottom of the block 52, it is resisted by the block 52, thereby driving the inner mold 51 to move upward. The first stop block 55 and the second stop block are connected by the compression spring 56. During the demolding process, the compression spring 56 can provide a certain buffer for the inner mold 51 to prevent the inner mold 51 from being damaged by excessive impact force during demolding.

[0038] The working principle and use process of the present invention are as follows: the driving motor 6 is started, the driving motor 6 drives the gear 44 to rotate, the gear 44 meshes with the tooth plates 43 on both sides, so that the two tooth plates 43 are close to each other, thereby driving the two clamping plates 41 to move along the slide groove on the top surface of the operating table 1 to clamp and position the lower mold 3;

[0039] Start the cylinder 23, and the output end of the cylinder 23 pushes the upper mold 24 to move downward, and cooperates with the lower mold 3 to mold the material. The cylinder 23 drives the upper mold 24 to move downward. When the upper mold 24 contacts the inner mold 51, it will drive the T-plate 54 to move downward. The T-plate 54 moves downward to the bottom of the two clamping blocks 52. Due to the elastic force of the telescopic spring 53, the two clamping blocks 52 will clamp the T-plate 54. After molding is completed, the cylinder 23 drives the upper mold 24 to move upward. During the rising process of the upper mold 24, the T-plate 54 is driven to move upward through the connection with the T-plate 54. During the rising process, the T-plate 54 will drive the inner mold 51 to move upward, so that the inner mold 51 is separated from the molded product, and the knob 521 is moved to both sides to separate the clamping block 52 from the T-plate 54 to achieve demoulding.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disc spring forging die with a long service life, comprising an operating table (1), characterized in that: A pressing mechanism (2) is installed on one side of the top of the operating table (1), a lower mold (3) is installed on the top of the operating table (1), a positioning mechanism (4) is provided at the bottom of the lower mold (3), and a demoulding mechanism (5) is provided inside the lower mold (3); The positioning mechanism (4) comprises a clamping plate (41) arranged on one side of the lower mold (3), a connecting rod (42) is arranged on one side of the clamping plate (41), one end of the connecting rod (42) is fixedly connected to a toothed plate (43), and the toothed plate (43) is meshingly connected to a gear (44); The demoulding mechanism (5) comprises an inner mold (51) located inside the lower mold (3), and blocks (52) are provided at both ends of the inner mold (51). A telescopic spring (53) is fixedly connected to one side of the block (52), and a T-shaped plate (54) is slidably connected to the other side of the block (52).

2. The long-life disc spring forging die according to claim 1 is characterized in that: The bottom surface of the operating table (1) is provided with supporting legs in a rectangular array, the number of the supporting legs is four, and the top surfaces of the four supporting legs are all connected to the bottom surface of the operating table (1).

3. The long-life disc spring forging die according to claim 1 is characterized in that: The pressing mechanism (2) comprises a bracket (21), a fixing seat (22), a cylinder (23) and an upper mold (24); the fixing seat (22) is fixedly connected to one end of the bracket (21); one end of the cylinder (23) passes through the bracket (21) and is fixedly connected to the inside of the fixing seat (22); and the upper mold (24) is connected to the output end of the cylinder (23).

4. The long-life disc spring forging die according to claim 1 is characterized in that: The inner side of the clamping plate (41) is fixedly connected with a protective pad (411) by means of bolts. The number of the clamping plates (41), the connecting rods (42) and the toothed plates (43) is two. The opposite sides of the two clamping plates (41) are respectively connected to the other ends of the two connecting rods (42). The gear (44) is meshedly connected between the two toothed plates (43).

5. The long-life disc spring forging die according to claim 1 is characterized in that: The bottom surface of the operating table (1) is provided with a fixed cover, the bottom surface of the fixed cover is provided with a driving motor (6), the output end of the driving motor (6) is connected to a gear (44), and the top surface of the operating table (1) is also provided with a sliding groove adapted to the clamping plate (41).

6. The long-life disc spring forging die according to claim 2 is characterized in that: One end of each of the two tooth plates (43) is fixedly connected to a return spring (431), and one end of the return spring (431) is connected to the inner wall of the operating table (1).

7. The long-life disc spring forging die according to claim 3 is characterized in that: The bottom surface of the bracket (21) is fixedly connected to one side of the top surface of the operating table (1), inclined plates are installed on both sides of the bracket (21), and the output end of the cylinder (23) is fixedly connected to the top surface of the upper mold (24) through a fixed block.

8. The long-life disc spring forging die according to claim 1 is characterized in that: The size of the inner mold (51) is adapted to the size of the upper mold (24); a knob (521) is fixedly connected to the top of the clamping block (52); one end of the telescopic spring (53) is fixedly connected to a gasket, and one side of the gasket is fixedly connected to the inner mold (51).

9. The long-life disc spring forging die according to claim 1 is characterized in that: The T-shaped plate (54) is slidably connected to the inside of the two blocks (52), and when the T-shaped plate (54) slides to the bottom of the two blocks (52), it will be resisted by the two blocks (52), and one side of the top of the T-shaped plate (54) is connected to one side of the upper mold (24).

10. The long-life disc spring forging die according to claim 1, characterized in that: A first stopper (55) is fixedly connected to the middle of both ends of the inner mold (51), a compression spring (56) is fixedly connected to the bottom surface of the first stopper (55), a second stopper is fixedly connected to the bottom surface of the compression spring (56), and one side of the second stopper is connected to the inner mold (51).

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