A stamping die for automobile bushing based on rapid demoulding

Abstract

The invention relates to the technical field of automobile parts manufacturing equipment, and in particular to an automobile bushing stamping die based on rapid demoulding, which solves the problem that automobile bushings cannot be quickly demoulded from the stamping die. The invention comprises an upper stamping die, a middle stamping die and a lower stamping die, wherein a bushing stamping cavity is provided in a circular array in the upper stamping die, a bushing clamp is installed in the circular array in the bushing stamping cavity, the middle stamping die is annular and a track ring is rotated in the middle, a second finished product clamping plate is fixed in the upper circular array of the track ring, a through hole is provided in the circular array in the middle stamping die, a finished product pressing assembly is rotated on the upper side of the middle stamping die, the lower stamping die is annular and an inner lining column is fixed in the upper circular array, the inner lining column moves up and down through the through hole and is aligned with the bushing stamping cavity up and down. The invention can automatically complete the fixing work and the stamping work of the automobile bushing when the lower stamping die is moved upward, and can automatically complete the demoulding and quick removal of the automobile bushing when the lower stamping die is moved downward.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing equipment, and in particular to an automobile bushing stamping die based on rapid demoulding. Background Art

[0002] Car seat bushings are a type of automotive component used for cushioning and shock absorption. Car bushings are made of a variety of materials, including rubber, plastic, and metal. Rubber bushings have good elasticity and wear resistance and are suitable for most vehicles. Polyurethane plastic bushings have better wear resistance and compression resistance and are suitable for high-performance vehicles. Metal bushings are suitable for heavy vehicles because they have better compression and wear resistance. When producing automobile bushings, stamping is required to stamp the tubular raw materials into automobile bushings. For the changes of automobile bushings before and after stamping, please refer to the attached drawings in the specification. Fig.12 The raw material is curled into a tube, and the tube-shaped raw material is pressed downward by the stamping die, and the lower end of the raw material is bent and deformed to form an attached Fig.12 The automotive bushing shown; The existing automobile bushing stamping die is usually composed of an upper stamping die and a lower stamping die. A stamping cavity is arranged in the lower side of the upper stamping die. The depth of the stamping cavity is less than that of the cylindrical raw material. A stamping column is fixed on the upper side of the lower stamping die. The cylindrical raw material is sleeved on the stamping column. After the upper stamping die moves downward, it stamps the cylindrical raw material. Since the depth of the stamping cavity is less than that of the cylindrical raw material, the lower end of the cylindrical raw material will bend, forming an attached Fig.12 The automotive bushing shown; However, the existing automotive bushing stamping dies have some defects, such as: In order to prevent the upper end of the automobile bushing from deforming during the stamping process, the diameter of the stamping column is designed to be equal to the inner diameter of the cylindrical raw material, and the inner diameter of the stamping cavity of the upper stamping die is designed to be equal to the outer diameter of the cylindrical raw material. After the automobile bushing is stamped, the automobile bushing may remain in the stamping cavity or be sleeved on the stamping column, and the automobile bushing is difficult to remove quickly, that is, it cannot be demolded quickly, which leads to reduced production efficiency.

[0003] Therefore, the present invention provides an automobile bushing stamping die based on rapid demoulding to solve the above problems. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a stamping die for automobile bushings based on rapid demoulding to solve the problem that the automobile bushings cannot be demoulded quickly and stably from the stamping die.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A stamping die for automobile bushings based on rapid demoulding, comprising an upper stamping die, a middle stamping die and a lower stamping die; The upper punching die has a bushing punching cavity in the circular array, and the bushing clamping plate is installed in the bushing punching cavity in the circular array; The middle stamping die is annular and has a track ring rotating in the middle, a second finished product card is fixed to the circular array on the upper side of the track ring, a through hole is provided in the circular array inside the middle stamping die, and a finished product pressing component is rotated on the upper side of the middle stamping die; The lower punching die is annular and has a liner column fixed in a circular array on the upper side. The liner column moves up and down through the through hole and is aligned with the bushing punching cavity up and down; A transmission rod is installed between the upper punching die, the middle punching die and the lower punching die. When the lower punching die moves up and down, the transmission rod drives a circle of bushing clamps to move closer to or away from each other through the first transmission assembly, drives the track ring to rotate forward and reverse through the second transmission assembly, and drives the finished product pressing assembly to rotate forward and reverse through the third transmission assembly. Through the above technical solution, when the lower punching die moves upward, the middle punching die is driven to move upward, so that the upper punching die, the middle punching die and the lower punching die are combined to punch the automobile bushing, and the automobile bushing is clamped by a circle of bushing clamps, and the inner lining column is inserted into the automobile bushing to support and limit the automobile bushing, thereby ensuring the stamping quality. In addition, there are multiple bushing stamping cavities and inner lining columns, so that multiple automobile bushings can be processed at one time, and the working efficiency is high. After the stamping is completed, a circle of bushing clamps move away from each other to release the automobile bushing, and the inner lining column is removed from the automobile bushing, so that the automobile bushing can be demoulded at one time, and during demoulding, the second finished product clamping plate and the finished product pressing assembly press the lower end of the automobile bushing, further preventing the automobile bushing from remaining in the bushing stamping cavity or being sleeved on the inner lining column, so that demoulding is stable and fast; When removing the automobile bushing, the track ring is rotated to make the second finished product card plate leave the automobile bushing, and the finished product pressing assembly is rotated to leave the automobile bushing, so that the automobile bushing is completely in a free state, which is convenient for removing the automobile bushing; In addition, the mutual approach and separation of the bushing clamps, the up and down movement of the lining columns and the rotation of the finished product pressing assembly are all controlled by the transmission rod. The movement of the transmission rod is controlled by the up and down movement of the lower punch die and the middle punch die. That is, when the lower punch die and the middle punch die move up and down, the mutual approach and separation of the bushing clamps, the up and down movement of the lining columns and the rotation of the finished product pressing assembly can be controlled. This control method is more accurate and synchronous, and does not require additional assistance or additional work steps. The operation is accurate and fast.

[0006] Preferably, the transmission rod comprises an inner sliding rod and an outer sliding frame, and the inner sliding rod is movably inserted in the outer sliding frame up and down; The lower end of the inner slide bar is fixed to the upper side of the lower punching die, and the upper end of the inner slide bar moves up and down through the middle punching die and the upper punching die; The lower end of the outer sliding frame passes through the middle stamping die and is fixed on the lower side of the middle stamping die. The upper end of the outer sliding frame moves up and down and passes through the upper stamping die. The upper end of the outer sliding frame is bent. Through the above technical solution, when the lower stamping die moves upward, it drives the inner slide bar to move upward and pushes the middle stamping die to move upward. When the lower stamping die moves downward, it drives the inner slide bar to move downward, and the middle stamping die is hung on the upper stamping die through the outer slide frame. As the lower stamping die continues to move downward, the lower stamping die is separated from the middle stamping die.

[0007] Preferably, the first transmission assembly includes an inner convex shaped wheel, a helical track plate, a first push column, a push rod, a second spring and an inner fixing cylinder; The inner circular array of the inner convex shaped wheel is provided with a raised portion, the inner convex shaped wheel rotates in the upper stamping die, a helical track plate is fixed on the outer side of the inner convex shaped wheel, a first top column slides in the helical track plate, and the first top column is fixed on the side of the inner slide rod; The inner fixed cylinder is fixed in the bushing stamping cavity in the upper stamping die, and a push rod is movably passed through the circular array in the inner fixed cylinder, and one end of the push rod located in the inner fixed cylinder is fixed to the side of the bushing clamping plate, and a second spring is fixed between the end of the push rod located outside the inner fixed cylinder and the inner fixed cylinder, and the push rod is located in the second spring, and the end of the push rod located outside the inner fixed cylinder abuts against the inner side of the inner convex special-shaped wheel; Through the above technical scheme, the inner sliding rod drives the first push column to move up and down, the first push column penetrates upward into or downward out of the bevel track plate, and drives the inner convex special-shaped wheel to rotate forward and reverse by pushing the bevel track plate, the raised part of the inner convex special-shaped wheel presses the push rod or leaves the push rod, the second spring extends and contracts accordingly, and the push rod pushes the bushing clamp, so that a circle of bushing clamps move closer to each other or closer to each other, thereby controlling the inner sliding rod to move up and down and move closer to each other or closer to each other.

[0008] Preferably, the second transmission assembly comprises a second top column and helical teeth, the helical teeth are fixed on the outer side of the track ring in a circular array, each group has two helical teeth, a second top column slides between the two helical teeth of each group, and the second top column is fixed on the side of the inner slide rod; Through the above technical solution, the inner slide rod drives the second top column to move up and down when it moves up and down, and the second top column only moves up and down, so that the second top column pushes the track ring to rotate when it slides in the bevel gear, so that the inner slide rod drives the track ring to rotate forward and reversely when it moves up and down.

[0009] Preferably, the third transmission assembly includes a first bevel gear, a connecting rod, a second bevel gear, a transmission wheel and an elastic plate; The transmission wheel and the two second bevel gears rotate coaxially in the middle stamping die, the second bevel gears mesh with the first bevel gears, the first bevel gears are fixed to the lower end of the connecting rod, the upper end of the connecting rod rotates to pass through the upper stamping die, and the finished product pressing assembly is fixed to the upper end of the connecting rod; The upper end of the elastic plate is fixed to the upper end of the inner slide bar, and the elastic plate drives the transmission wheel to rotate when following the inner slide bar to move up and down; Through the above technical solution, when the inner slide bar moves up and down, it drives the elastic plate to move up and down. The elastic plate contacts the transmission wheel to drive the transmission wheel to rotate. The transmission wheel drives the second bevel gear to rotate. The second bevel gear drives the first bevel gear to rotate. The first bevel gear drives the connecting rod to rotate. The connecting rod drives the finished product pressing assembly to rotate forward and reverse. The forward and reverse rotation of the finished product pressing assembly is controlled by the up and down movement of the inner slide bar.

[0010] Preferably, the finished product pressing assembly includes a mounting seat, a first finished product card plate and a finished product top plate, the mounting seat is fixed to the upper end of the connecting rod, the first finished product card plate and the finished product top plate are fixed to the upper side of the mounting seat, the first finished product card plate and the finished product top plate are arranged in parallel, the length of the finished product top plate is greater than the length of the first finished product card plate, the lower side height of the first finished product card plate is higher than the lower side height of the finished product top plate, and the lower side height of the first finished product card plate is equal to the lower side height of the second finished product card plate; Through the above technical scheme, the second finished card plate and the two first finished card plates clamp the lower end of the automobile bushing, which can prevent the automobile bushing from moving up and down with the inner lining column and prevent the automobile bushing from staying in the bushing stamping cavity. When the inner lining column leaves the automobile bushing and the automobile bushing leaves the bushing stamping cavity, the mounting seat drives the first finished card plate and the finished top plate to rotate, and the first finished card plate leaves the automobile bushing, so that the automobile bushing is in a free state, and the finished top plate is longer, so the automobile bushing can be pushed away at the same time, and there is no need to manually remove the automobile bushing, which is more convenient to use.

[0011] Preferably, a buffer block is inserted laterally and movably in one end of the finished top plate away from the mounting seat, an end of the buffer block is located outside the finished top plate, and a first spring is fixed between the buffer block and the finished top plate; Through the above technical solution, since the rotation of the track ring and the rotation of the mounting seat are synchronized, in order for the second finished card plate to have a sufficient distance away from the automobile bushing before the finished top plate pushes the automobile bushing, the finished top plate needs to push the automobile bushing one step later, and the buffer block can be retracted into the finished top plate, that is, the automobile bushing will not be pushed before the track ring leaves. When the second finished card plate leaves the automobile bushing, the first spring pushes the buffer block to instantly push the buffer block out of the automobile bushing.

[0012] Preferably, a punching pad is fixed in the upper end of the through hole of the middle punching die by screws, the upper side height of the punching pad is equal to the upper side height of the middle punching die, and the punching pad is located directly below the second finished card board and the two first finished card boards; Through the above technical solution, the punching pad replaces the upper side of the middle punching die to contact the automobile bushing, and the punching pad can be replaced after being worn.

[0013] The beneficial effects of the present invention are: 1. When the lower punching die moves upward, it drives the middle punching die to move upward, so that the upper punching die, the middle punching die and the lower punching die are combined to punch the automobile bushing, realizing conventional punching work. The automobile bushing is clamped by a circle of bushing clamps, and the inner lining column is inserted into the automobile bushing to support and limit the automobile bushing to ensure the punching quality. In addition, there are multiple bushing punching cavities and inner lining columns, so multiple automobile bushings can be processed at one time, which is more efficient. 2. After the stamping is completed, a circle of bushing clamps move away from each other to release the automobile bushing, so as to prevent the automobile bushing from staying in the bushing stamping cavity, ensure rapid demoulding, and the inner liner column is removed from the automobile bushing, so that the automobile bushing can be demoulded at one time, and during demoulding, the second finished product clamping plate and the finished product pressing assembly press the lower end of the automobile bushing, which can further prevent the automobile bushing from staying in the bushing stamping cavity or being sleeved on the inner liner column, so that demoulding is stable and rapid; 3. When removing the automobile bushing, the track ring is rotated to make the second finished product card plate leave the automobile bushing, and the finished product pressing assembly is rotated to leave the automobile bushing, so that the automobile bushing is completely free, which is convenient for removing the automobile bushing; 4. The mutual approach and separation of the bushing clamps, the up and down movement of the lining columns and the rotation of the finished product pressing assembly are all controlled by the transmission rod. The movement of the transmission rod is controlled by the up and down movement of the lower punch die and the middle punch die. That is, when the lower punch die and the middle punch die move up and down, the mutual approach and separation of the bushing clamps, the up and down movement of the lining columns and the rotation of the finished product pressing assembly can be controlled. This control method is more accurate and synchronous, and does not require additional assistance or additional work steps. The control is accurate and fast.

[0014] In summary, the device can automatically complete the fixing work and the stamping work of the automobile bushing when the lower stamping die is moved upward, and can automatically complete the demoulding and quickly remove the automobile bushing when the lower stamping die is moved downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0016] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure of part A.

[0017] Figure 3 It is a side view from a first perspective of the present invention.

[0018] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at BB.

[0019] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure at CC.

[0020] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure of part D.

[0021] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure at EE.

[0022] Figure 8 It is a side view from a second perspective of the present invention.

[0023] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure at FF.

[0024] Fig.10 It is a schematic diagram of the parts matching structure of the inner convex special-shaped wheel, the helical track plate and the first top column in the present invention.

[0025] Fig.11 It is a schematic diagram of the matching structure of the track ring and the second top column in the present invention.

[0026] Fig.12 This is a schematic diagram of the structure of the automobile bushing before and after stamping.

[0027] In the figure: 1, upper stamping die; 2, inner convex special-shaped wheel; 3, inner lining column; 4, middle stamping die; 5, lower stamping die; 6, mounting seat; 7, stamping pad; 8, first finished product pallet; 9, finished product top plate; 10, first spring; 11, buffer block; 12, helical gear track plate; 13, first top column; 14, inner slide rod; 15, outer slide frame; 16, top rod; 17, second spring; 18, inner fixing cylinder; 19, bushing clamp; 20, second finished product pallet; 21, track ring; 22, first bevel gear; 23, connecting rod; 24, second bevel gear; 25, transmission wheel; 26, second top column; 27, helical gear; 28, elastic plate. DETAILED DESCRIPTION

[0028] The following will refer to the attached Figures 1 to 12 The embodiments of the present invention are described in detail. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0029] As attached Figure 1 -Attached Fig.12 As shown, a stamping die for automobile bushing based on rapid demoulding includes an upper stamping die 1, a middle stamping die 4 and a lower stamping die 5; See attached Figure 5 The lower end of the upper punching die 1 has a bushing punching cavity in the circular array, and the bushing clamping plate 19 is installed in the bushing punching cavity in the circular array; See attached Figure 1 and attached Figure 4 The middle stamping die 4 is located directly below the upper stamping die 1. The middle stamping die 4 is annular and has a track ring 21 rotating in the middle. The second finished product card plate 20 is fixed to the circular array on the upper side of the track ring 21. The upper end of the second finished product card plate 20 is located above the middle stamping die 4. The inner circular array of the middle stamping die 4 has through holes. The number of through holes is equal to the number of bushing stamping cavities. The through holes are located directly below the bushing stamping cavities. A finished product pressing component is rotated on the upper side of the middle stamping die 4. See attached Figure 1 and attached Figure 4 The lower punching die 5 is annular and has lining columns 3 fixed in a circular array on the upper side. The number of lining columns 3 is equal to the number of through holes. The lining columns 3 move up and down through the through holes and are aligned with the bushing punching cavity up and down. Please refer to the attached Figure 1 -Attached Fig.12 A transmission rod is installed between the upper stamping die 1, the middle stamping die 4 and the lower stamping die 5. When the lower stamping die 5 moves up and down, the transmission rod drives a circle of bushing clamps 19 to move closer to or away from each other through the first transmission assembly, the transmission rod drives the track ring 21 to rotate forward and reverse through the second transmission assembly, and the transmission rod drives the finished product pressing assembly to rotate forward and reverse through the third transmission assembly.

[0030] In this embodiment, see the attached Fig. 9 The transmission rod includes an inner slide rod 14 and an outer slide frame 15, and the inner slide rod 14 is inserted into the outer slide frame 15 for vertical movement; The lower end of the inner slide bar 14 is fixed to the upper side of the lower punching die 5, and the upper end of the inner slide bar 14 moves up and down through the middle punching die 4 and the upper punching die 1; The lower end of the outer sliding frame 15 passes through the middle stamping die 4 and is fixed on the lower side of the middle stamping die 4. The upper end of the outer sliding frame 15 moves up and down through the upper stamping die 1. The upper end of the outer sliding frame 15 is bent so that the upper end of the outer sliding frame 15 is hung on the inner lower side of the upper stamping die 1.

[0031] In this embodiment, see the attached Figure 5 , Attachment Figure 6 and attached Fig.10 The first transmission assembly includes an inner convex shaped wheel 2, a helical track plate 12, a first top column 13, a top rod 16, a second spring 17 and an inner fixing cylinder 18; The inner circular array of the inner convex shaped wheel 2 is provided with a raised portion, the inner convex shaped wheel 2 rotates in the upper stamping die 1, a helical track plate 12 is fixed to the outer side of the inner convex shaped wheel 2, a first top column 13 slides in the helical track plate 12, and the first top column 13 is fixed to the side of the inner slide rod 14; The inner fixed cylinder 18 is fixed in the bushing punching cavity in the upper punching die 1, and a push rod 16 is movably passed through the circular array in the inner fixed cylinder 18. One end of the push rod 16 located in the inner fixed cylinder 18 is fixed to the side of the bushing clamping plate 19, and a second spring 17 is fixed between the end of the push rod 16 located outside the inner fixed cylinder 18 and the inner fixed cylinder 18. The push rod 16 is located in the second spring 17, and one end of the push rod 16 located outside the inner fixed cylinder 18 abuts against the inner side of the inner convex special-shaped wheel 2; The working mode of the first transmission assembly is as follows: the inner slide bar 14 drives the first push column 13 to move up and down. When the lower stamping die 5 moves upward to perform stamping, the inner slide bar 14 moves upward, and the first push column 13 penetrates upward into the helical track plate 12, and drives the inner convex special-shaped wheel 2 to rotate by pushing the helical track plate 12. When the raised part of the inner convex special-shaped wheel 2 presses the push rod 16, the second spring 17 is compressed, and the push rod 16 pushes the bushing clamping plate 19, so that a circle of bushing clamping plates 19 are brought close to each other to clamp the automobile bushing; When the stamping is completed, the lower stamping die 5 moves downward, the inner slide rod 14 moves downward, the first push column 13 leaves the helical track plate 12 downward, and drives the inner convex special-shaped wheel 2 to rotate in the opposite direction by pushing the helical track plate 12. The raised part of the inner convex special-shaped wheel 2 no longer presses the push rod 16, and the second spring 17 is expanded to push the push rod 16 back to its original position. The push rod 16 pulls back the bushing clamp 19, so that a circle of bushing clamps 19 are away from each other to release the automobile bushing.

[0032] In this embodiment, see the attached Figure 7 and attached Fig.11 The second transmission assembly includes a second top column 26 and a bevel gear 27. The bevel gears 27 are fixed to the outside of the track ring 21 in a circular array. Each group has two bevel gears 27. A second top column 26 slides between the two bevel gears 27 of each group. The second top column 26 is fixed to the side of the inner slide bar 14. The working mode of the second transmission assembly is as follows: when the inner slide bar 14 moves up and down, it drives the second top column 26 to move up and down, and the second top column 26 only moves up and down, and when the second top column 26 slides in the bevel gear 27, it drives the track ring 21 to rotate.

[0033] In this embodiment, see the attached Figure 7 , the third transmission assembly includes a first bevel gear 22, a connecting rod 23, a second bevel gear 24, a transmission wheel 25 and an elastic plate 28; The transmission wheel 25 and the two second bevel gears 24 rotate coaxially in the middle stamping die 4, the second bevel gear 24 meshes with the first bevel gear 22, the first bevel gear 22 is fixed to the lower end of the connecting rod 23, the upper end of the connecting rod 23 rotates to pass through the upper stamping die 1, and the upper end of the connecting rod 23 is fixed with a finished product pressing assembly; The upper end of the elastic plate 28 is fixed to the upper end of the inner slide bar 14, and the elastic plate 28 drives the transmission wheel 25 to rotate when following the inner slide bar 14 to move up and down; The working mode of the third transmission assembly is as follows: when the inner slide bar 14 moves up and down, it drives the elastic plate 28 to move up and down, the elastic plate 28 contacts the transmission wheel 25 to drive the transmission wheel 25 to rotate, the transmission wheel 25 drives the second bevel gear 24 to rotate, the second bevel gear 24 drives the first bevel gear 22 to rotate, the first bevel gear 22 drives the connecting rod 23 to rotate, and the connecting rod 23 drives the finished product pressing assembly to rotate forward and reverse.

[0034] In this embodiment, see the attached Figure 1 and attached Figure 2 The finished product pressing assembly includes a mounting seat 6, a first finished product card plate 8 and a finished product top plate 9. The mounting seat 6 is fixed to the upper end of the connecting rod 23. The first finished product card plate 8 and the finished product top plate 9 are fixed on the upper side of the mounting seat 6. The first finished product card plate 8 and the finished product top plate 9 are arranged in parallel. The length of the finished product top plate 9 is greater than the length of the first finished product card plate 8. The lower side height of the first finished product card plate 8 is higher than the lower side height of the finished product top plate 9. The lower side height of the first finished product card plate 8 is equal to the lower side height of the second finished product card plate 20. A buffer block 11 is laterally movably interspersed in the end of the finished product top plate 9 away from the mounting seat 6. The end of the buffer block 11 is located outside the finished product top plate 9. A first spring 10 is fixed between the buffer block 11 and the finished product top plate 9.

[0035] In this embodiment, see the attached Figure 1 A punching pad 7 is fixed to the upper end of the through hole of the middle punching die 4 by screws. The upper side height of the punching pad 7 is equal to the upper side height of the middle punching die 4. The punching pad 7 is located directly below the second finished card board 20 and the two first finished card boards 8.

[0036] The overall working principle of this device is: The raw material of the cylindrical automobile bushing is placed on the stamping pad 7, and the lower stamping die 5 moves upward, and the lower stamping die 5 drives the inner lining column 3 to move upward, so that the inner lining column 3 passes through the through hole and is inserted into the automobile bushing. Then the lower stamping die 5 continues to move upward, and the lower stamping die 5 drives the middle stamping die 4 to move upward until the inner lining column 3 and the automobile bushing are inserted into the bushing stamping cavity, and a circle of bushing clamps 19 are close to each other to surround the automobile bushing. The lower stamping die 5 continues to move upward to stamp the automobile bushing. At this time, Fig.12In the process, points a, b and c of the automobile bushing are inserted under the second finished card plate 20 and the two first finished card plates 8. After the stamping is completed, the lower stamping die 5 moves downward, and the lower stamping die 5 drives the inner slide bar 14 to move downward, so that a circle of bushing clamps 19 are separated. Due to the restrictions of the second finished card plate 20 and the two first finished card plates 8, the automobile bushing follows the lower stamping die 5 to move downward, and the lower stamping die 5 continues to move downward until the upper end of the outer slide frame 15 is hung on the upper stamping die 1. At this time, the middle stamping die 4 stops, and the lower stamping die 5 continues to move downward, so that the inner lining column 3 is disengaged downward from the automobile bushing. The lower stamping die 5 drives the inner slide bar 14 to continue to move downward, the second finished card plate 20 and the two first finished card plates 8 leave the automobile bushing, and the finished top plate 9 pushes the automobile bushing away, so that the automobile bushing falls out from the middle of the middle stamping die 4 and the lower stamping die 5; Afterwards, the lower punching die 5 drives the inner slide bar 14 to move upward to rotate the second finished product pallet 20 and the two first finished product pallets 8 back to their original positions, and then begins to put down a cylindrical automobile bushing raw material to start the next stroke.

[0037] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A stamping die for automobile bushings based on rapid demoulding, characterized in that: It comprises an upper punching die (1), a middle punching die (4) and a lower punching die (5); The upper punching die (1) has a bushing punching cavity in a circular array, and a bushing clamping plate (19) is installed in the bushing punching cavity in a circular array; The middle punching die (4) is annular and has a track ring (21) rotating in the middle, a second finished product clamping plate (20) is fixed to a circular array on the upper side of the track ring (21), a through hole is provided in the inner circular array of the middle punching die (4), and a finished product pressing component is rotating on the upper side of the middle punching die (4); The lower punching die (5) is annular and has an inner lining column (3) fixed in a circular array on the upper side. The inner lining column (3) moves up and down through the through hole and is aligned with the bushing punching cavity up and down. A transmission rod is installed between the upper punching die (1), the middle punching die (4) and the lower punching die (5). When the lower punching die (5) moves up and down, the transmission rod drives a circle of bushing clamps (19) to move closer to or away from each other through a first transmission assembly, drives the track ring (21) to rotate forward and reverse through a second transmission assembly, and drives the finished product pressing assembly to rotate forward and reverse through a third transmission assembly.

2. The automobile bushing stamping die based on rapid demoulding according to claim 1 is characterized in that: The transmission rod comprises an inner sliding rod (14) and an outer sliding frame (15), wherein the inner sliding rod (14) is movably inserted into the outer sliding frame (15) up and down; The lower end of the inner slide bar (14) is fixed to the upper side of the lower punching die (5), and the upper end of the inner slide bar (14) moves up and down through the middle punching die (4) and the upper punching die (1); The lower end of the outer sliding frame (15) passes through the middle punching die (4) and is fixed to the lower side of the middle punching die (4). The upper end of the outer sliding frame (15) moves up and down and passes through the upper punching die (1). The upper end of the outer sliding frame (15) is bent.

3. The automobile bushing stamping die based on rapid demoulding according to claim 2 is characterized in that: The first transmission assembly comprises an inner convex special-shaped wheel (2), a helical track plate (12), a first top column (13), a top rod (16), a second spring (17) and an inner fixing cylinder (18); A raised portion is arranged in a circular array on the inner side of the inner convex shaped wheel (2), the inner convex shaped wheel (2) rotates in the upper stamping die (1), a beveled track plate (12) is fixed on the outer side of the inner convex shaped wheel (2), a first top column (13) slides in the beveled track plate (12), and the first top column (13) is fixed on the side of the inner slide rod (14); The inner fixed cylinder (18) is fixed in the bushing stamping cavity in the upper stamping die (1), and a push rod (16) is movably passed through the circular array in the inner fixed cylinder (18), one end of the push rod (16) located in the inner fixed cylinder (18) is fixed to the side of the bushing clamping plate (19), and a second spring (17) is fixed between the end of the push rod (16) located outside the inner fixed cylinder (18) and the inner fixed cylinder (18), and the push rod (16) is located in the second spring (17), and the end of the push rod (16) located outside the inner fixed cylinder (18) contacts the inner side of the inner convex special-shaped wheel (2).

4. The automobile bushing stamping die based on rapid demoulding according to claim 2 is characterized in that: The second transmission assembly comprises a second top column (26) and bevel teeth (27). The bevel teeth (27) are fixed on the outside of the track ring (21) in a circular array. Each group has two bevel teeth (27). A second top column (26) slides between the two bevel teeth (27) in each group. The second top column (26) is fixed on the side of the inner slide rod (14).

5. The automobile bushing stamping die based on rapid demoulding according to claim 2, characterized in that: The third transmission assembly comprises a first bevel gear (22), a connecting rod (23), a second bevel gear (24), a transmission wheel (25) and an elastic plate (28); The transmission wheel (25) and the two second bevel gears (24) rotate coaxially in the middle stamping die (4), the second bevel gears (24) mesh with the first bevel gears (22), the first bevel gear (22) is fixed to the lower end of the connecting rod (23), the upper end of the connecting rod (23) rotates to pass through the upper stamping die (1), and the upper end of the connecting rod (23) is fixed with a finished product pressing assembly; The upper end of the elastic plate (28) is fixed to the upper end of the inner slide bar (14), and the elastic plate (28) drives the transmission wheel (25) to rotate when following the inner slide bar (14) to move up and down.

6. The automobile bushing stamping die based on rapid demoulding according to claim 5, characterized in that: The finished product pressing assembly comprises a mounting seat (6), a first finished product clamping plate (8) and a finished product top plate (9); the mounting seat (6) is fixed to the upper end of the connecting rod (23); the first finished product clamping plate (8) and the finished product top plate (9) are fixed to the upper side of the mounting seat (6); the first finished product clamping plate (8) and the finished product top plate (9) are arranged in parallel; the length of the finished product top plate (9) is greater than the length of the first finished product clamping plate (8); the height of the lower side of the first finished product clamping plate (8) is higher than the height of the lower side of the finished product top plate (9); and the height of the lower side of the first finished product clamping plate (8) is equal to the height of the lower side of the second finished product clamping plate (20).

7. The automobile bushing stamping die based on rapid demoulding according to claim 6, characterized in that: A buffer block (11) is inserted into the end of the finished top plate (9) away from the mounting seat (6) in a transversely movable manner, the end of the buffer block (11) is located outside the finished top plate (9), and a first spring (10) is fixed between the buffer block (11) and the finished top plate (9).

8. The automobile bushing stamping die based on rapid demoulding according to claim 6, characterized in that: A punching pad (7) is fixed in the upper end of the through hole of the middle punching die (4) by means of screws, the upper side height of the punching pad (7) is equal to the upper side height of the middle punching die (4), and the punching pad (7) is located directly below the second finished card plate (20) and the two first finished card plates (8).

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