A primary forming mold

Abstract

The utility model discloses a primary forming mold, belonging to the field of automobile structural part mold design; it comprises an upper mold component and a lower mold component, the upper mold component comprises a male mold, the lower mold component comprises a female mold for receiving the male mold, a plurality of different stamping areas are arranged at the lower end of the male mold, a plurality of pressure-bearing surfaces matching the stamping areas are arranged at the upper end of the female mold, when preparing a lower thrust rod bracket plate, a prefabricated raw material plate is placed on the female mold, the upper mold component and the lower mold component are controlled to close the mold, the stamping area of ​​the male mold cooperates with the pressure-bearing surface of the female mold to perform primary forming on the prefabricated raw material plate; the utility model has a compact structure, the overall volume of the mold body is not large, the stamping station is accurately positioned, the processing accuracy of the equipment is greatly improved, and the high-precision processing requirements of the modern automobile industry are met.

Description

Technical Field

[0001] The utility model relates to a forming die, in particular to a primary forming die in the production process of a lower thrust rod bracket plate, and belongs to the field of automobile structural part die design. Background Art

[0002] There are many kinds of auto parts. With the improvement of people's living standards, people's consumption of cars is increasing, and the market of auto parts is getting bigger and bigger. In recent years, auto parts manufacturers are also developing rapidly. Thrust rods are commonly used in the automotive industry, and the requirements for thrust rods in auto parts are very high. The thrust rod bracket plate is an auxiliary component of the thrust rod, which plays an important role in the operation and work of the car. The left / right bracket plate of the lower thrust rod of the car is one of the indispensable parts of the car.

[0003] As the automobile industry becomes more and more sophisticated, the requirements for automobile accessories are also getting higher and higher. This requirement is not only reflected in the quality of the accessories, but also in the control of the accessory manufacturing process. In the prior art, stamping dies are usually used to process and produce the left / right bracket plates (inner or outer plates of the bracket) of the automobile lower thrust rod. Generally, a stamping die is a pressure processing method that uses a mold installed on a press at room temperature to apply pressure to the material to cause separation or plastic deformation, thereby obtaining the required parts. The lower thrust rod bracket plate is a special-shaped part composed of multiple curved surfaces (and includes left and right parts), such as Figure 1 As shown. Because of its thin material, high dimensional accuracy, it is difficult to design and manufacture.

[0004] When the existing lower thrust rod bracket plate is stamped and produced, since the workpiece generally needs to be stamped into an irregular shape, it is impossible to accurately position the workpiece in the middle of the inner side of the mold during stamping, which eventually causes the workpiece to be offset, thus affecting the final processing effect of the product. After the workpiece is stamped and formed, it may be deeply stuck in the inner side of the mold, which is very troublesome for subsequent workers to take out. Moreover, most of them still use single-punch molds, which have a large overall mold body, low processing accuracy, complex mold structure, high cost, poor operability, and difficulty in mold repair, thereby reducing production efficiency. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a primary forming mold.

[0006] The technical solution adopted by the utility model is: design a primary forming mold, including an upper mold component and a lower mold component, the upper mold component includes a punch, and the lower mold component includes a die for receiving the punch. A stamping area is arranged at the lower end of the punch, and the stamping area includes a first stamping area, a second stamping area, a third stamping area, a fourth stamping area, a fifth stamping area, a sixth stamping area, and a seventh stamping area; a pressure-bearing surface is arranged at the upper end of the die, and the pressure-bearing surface includes a first pressure-bearing surface, a second pressure-bearing surface, a third pressure-bearing surface, a fourth pressure-bearing surface, a fifth pressure-bearing surface, a sixth pressure-bearing surface, and a seventh pressure-bearing surface corresponding to the first stamping area, the second stamping area, the third stamping area, the fourth stamping area, the fifth stamping area, the sixth stamping area, and the seventh stamping area, respectively.

[0007] When preparing the lower thrust rod bracket plate, the prefabricated raw material plate is placed on the die, the upper die assembly and the lower die assembly are controlled to close the die, and the stamping area of ​​the convex die cooperates with the pressure surface of the die to perform initial molding on the prefabricated raw material plate.

[0008] Furthermore, the first pressure-bearing surface is a groove-shaped curved surface, and the second pressure-bearing surface, the third pressure-bearing surface, the fourth pressure-bearing surface, the fifth pressure-bearing surface, the sixth pressure-bearing surface and the seventh pressure-bearing surface are all slope surfaces.

[0009] Furthermore, the lower mold assembly also includes a lower mold frame, the female mold includes a first fixed module, a second fixed module and a movable module, the first fixed module, the second fixed module and the movable module are arranged in the lower mold frame, and the movable module can move up and down relative to the lower mold frame.

[0010] Furthermore, the lower mold assembly also includes a lower mold base, a nitrogen spring and a lower pad. A lower mold frame is arranged above the lower mold base, the nitrogen spring is arranged on the lower mold base below the moving module, and the lower pad is arranged on the lower side of the lower mold base and below the nitrogen spring.

[0011] Furthermore, the lower die assembly also includes a discharge guide pin, which is arranged on the lower side of the movable die block, and the lower die base and the lower pad are respectively provided with channels for accommodating the sliding of the discharge guide pin.

[0012] Furthermore, the lower die assembly also includes a lower pad, which is arranged between the lower die frame and the lower die base, and the lower pad is respectively provided with circular holes allowing the nitrogen spring and the unloading guide pin to pass through.

[0013] Furthermore, the lower die assembly also includes a material guiding frame, at least one material guiding frame is respectively arranged on the front, back, left and right sides of the die, a rib is arranged at the corner of the punch corresponding to the position of the movable module, and a step is arranged on the movable module for accommodating the rib.

[0014] Furthermore, it also includes a positioning pin and a positioning sleeve that cooperates with the positioning pin, the positioning pin is arranged on the concave mold, and the positioning sleeve is arranged on the convex mold, and two of each are arranged.

[0015] Furthermore, the upper die assembly also includes an upper die base and multiple groups of upper stripping assemblies arranged on the upper die base, the upper stripping assemblies include guide pins and rectangular coil springs connected to the guide pins, the rectangular coil springs are arranged on the upper die base, and the upper stripping assemblies pass through the punch.

[0016] Furthermore, it also includes guide plates and retaining wall keys. Retaining wall keys are respectively arranged between the first fixed module and the second fixed module and the inner wall of the lower mold frame. Guide grooves are respectively arranged on both sides adjacent to the movable module of the lower mold frame. Guide plates are respectively arranged at the positions corresponding to the guide grooves on the movable module and the punch.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model, when performing stamping processing to produce the lower thrust rod bracket plate, accurately guides the prefabricated raw material plate to the middle position of the die through the material guide frames arranged on the front, back, left and right sides of the die, and the positioning pin passes through the two positioning holes of the prefabricated raw material plate to ensure that the prefabricated raw material plate is placed in the accurate position on the die. In the process of mold closing, the positioning sleeve cooperates with the positioning pin to further limit the prefabricated raw material plate, and then the retaining edge arranged at the corner of the punch corresponding to the position of the moving module gradually extends into the step arranged on the moving module, which can also limit the prefabricated raw material plate, and then, through the cooperation of each stamping area on the punch and each pressure-bearing surface on the die, the majority of irregular shapes on the lower thrust rod bracket plate are initially stamped out at one time, which is convenient for the subsequent further stamping process to be carried out until the final forming; when stamping, the workpiece (prefabricated raw material plate) can be accurately positioned in the middle of the inner side of the mold to avoid the workpiece from being offset, thereby ensuring the final processing effect of the product.

[0019] After the workpiece (prefabricated raw material plate) is initially stamped and formed, the movable module pushes the workpiece out under the action of the nitrogen spring. At the same time, the upper stripping assembly can prevent the workpiece from sticking to the upper mold assembly, making it easier to remove the subsequent workpiece.

[0020] The utility model has a compact structure, a small overall mold body, and can accurately position the stamping station, greatly improving the processing accuracy of the equipment and meeting the high-precision processing requirements of the modern automotive industry. The mold structure is not complicated, the cost is not high, and the operability is good, and the mold is easy to repair, so it has high production efficiency, safety performance and product quality. Multiple irregular surfaces are stamped and formed at one time, with high dimensional accuracy, reducing manufacturing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 Schematic diagram of the lower thrust rod bracket plate.

[0023] Figure 2 Schematic diagram of prefabricated raw material board.

[0024] Figure 3 It is a schematic diagram of the axonometric drawing of the utility model.

[0025] Figure 4 This is a schematic diagram of the axonometric view of the utility model after some parts are hidden.

[0026] Figure 5 For the utility model Figure 4 Axonometric diagram with some parts further hidden.

[0027] Figure 6 This is a schematic diagram of the axonometric view of the upper mold assembly of the utility model after some parts are hidden.

[0028] Figure 7 This is a schematic diagram of the axonometric view of the lower mold assembly of the utility model after some parts are hidden.

[0029] Figure 8 It is a schematic diagram of the lower mold frame of the utility model.

[0030] Fig. 9 It is a schematic diagram of the punch of the utility model.

[0031] In the figure: 1, upper die assembly; 2, lower die assembly; 3, punch; 4, first stamping area; 5, second stamping area; 6, third stamping area; 7, fourth stamping area; 8, fifth stamping area; 9, sixth stamping area; 10, seventh stamping area; 11, first pressure-bearing surface; 12, second pressure-bearing surface; 13, third pressure-bearing surface; 14, fourth pressure-bearing surface; 15, fifth pressure-bearing surface; 16, sixth pressure-bearing surface; 17, seventh pressure-bearing surface; 18, Prefabricated raw material plate; 19. Lower die frame; 20. Concave die; 21. First fixed module; 22. Second fixed module; 23. Moving module; 24. Lower die base; 25. Nitrogen spring; 26. Lower pad; 27. Unloading guide pin; 28. Lower pad; 29. ​​Material guiding frame; 30. Side guard; 31. Step; 32. Positioning pin; 33. Positioning sleeve; 34. Upper die base; 35. Upper stripping assembly; 36. Guide plate; 37. Retaining wall key; 38. Guide groove. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] like Figure 2-9 As shown: a primary forming die, including an upper die assembly 1 and a lower die assembly 2, the upper die assembly 1 including a punch 3 (a forging with a length, width and height of 320*325*145mm), and the lower die assembly 2 including a die 20 for receiving the punch 3. A plurality of stamping areas are arranged at the lower end of the punch 3, and the stamping areas include a first stamping area 4, a second stamping area 5, a third stamping area 6, a fourth stamping area 7, a fifth stamping area 8, a sixth stamping area 9 and a seventh stamping area 10; a plurality of pressure-bearing surfaces are arranged at the upper end of the die 20, and the pressure-bearing surfaces include a first pressure-bearing surface 11, a second pressure-bearing surface 12, a third pressure-bearing surface 13, a fourth pressure-bearing surface 14, a fifth pressure-bearing surface 15, a sixth pressure-bearing surface 16 and a seventh pressure-bearing surface 17 corresponding to the first stamping area 4, the second stamping area 5, the third stamping area 6, the fourth stamping area 7, the fifth stamping area 8, the sixth stamping area 9 and the seventh stamping area 10 respectively.

[0036] When preparing the lower thrust rod support plate, the prefabricated raw material plate 18 is placed on the die 20, the upper die assembly 1 and the lower die assembly 2 are controlled to close the mold, and the stamping area of ​​the punch 3 cooperates with the pressure-bearing surface of the die 20 to perform preliminary molding on the prefabricated raw material plate 18; after the preliminary molding, the prefabricated raw material plate 18 needs to undergo subsequent secondary molding, separation and shaping on other molds to finally obtain the lower thrust rod support plate, that is, the mold provided by this application is the first step molding process mold for manufacturing the lower thrust rod support plate, and the subsequent molding process mold is designed and obtained according to the structure of the lower thrust rod support plate and the structure of the workpiece after processing in this application. After the mold stamping of this application, the workpiece already has the general outline of the lower thrust rod support plate, and the subsequent processing is also simpler.

[0037] The first pressure-bearing surface 11 is a groove-shaped curved surface (the bottom of the curved surface is a plane), and the second pressure-bearing surface 12, the third pressure-bearing surface 13, the fourth pressure-bearing surface 14, the fifth pressure-bearing surface 15, the sixth pressure-bearing surface 16 and the seventh pressure-bearing surface 17 are all different slope surfaces (or planes). Correspondingly, the first stamping area 4 is a convex structure that can engage with the groove-shaped curved surface, and the second stamping area 5, the third stamping area 6, the fourth stamping area 7, the fifth stamping area 8, the sixth stamping area 9 and the seventh stamping area 10 are also different slope structures (or flat slope structures).

[0038] The lower mold assembly 2 also includes a lower mold frame 19 (length, width and height are 510*525*130mm), and the female mold 20 includes a first fixed module block 21, a second fixed module block 22 and a movable module block 23. The three are assembled into the female mold 20, and the pressure-bearing surface is arranged on the upper end surfaces of the three. The first fixed module block 21, the second fixed module block 22 and the movable module block 23 are arranged in the lower mold frame 19, and the movable module block 23 can move up and down relative to the lower mold frame 19.

[0039] The lower die assembly 2 further includes a lower die seat 24, a nitrogen spring 25 and a lower pad 26. A lower die frame 19 is arranged above the lower die seat 24. The nitrogen spring 25 is arranged on the lower die seat 24 below the movable module 23 to lift the movable module 23. The lower pad 26 is arranged on the lower side of the lower die seat 24 and below the nitrogen spring 25 to improve the pressure bearing capacity of the lower die seat 24 where the nitrogen spring 25 is installed. The lower die assembly 2 further includes a discharge guide pin 27, which is arranged on the lower side of the movable module 23. The lower die seat 24 and the lower pad 26 are respectively provided with channels for accommodating the sliding of the discharge guide pin 27. The lower die assembly 2 also includes a lower pad 28, which is arranged between the lower die frame 19 and the lower die seat 24 to improve the anti-deformation ability of the lower die seat 24 (when the die is stamped and closed, the pressure of the stamping plate is too large. In the long run, the lower die seat 24 will be deformed by pressure. The lower pad 28 is used to improve the service life of the die). The lower pad 28 is provided with circular holes that allow the nitrogen spring 25 and the unloading guide pin 27 to pass through. The bottom of the lower die frame 19 is provided with a bottom plate, and the first fixed module 21 and the second fixed module 22 are respectively installed on the bottom plate. The bottom plate is also provided with a channel that allows the moving module 23 to pass through. The moving module 23 passes through the bottom plate of the lower die frame 19 and abuts against the lower pad 28.

[0040] The lower die assembly 2 also includes a material guiding frame 29 (specification model: NGNBA100-20-M10-HTC), and at least one material guiding frame 29 is respectively arranged on the front, back, left and right sides of the die 20. The punch 3 is provided with a rib 30 at the corner corresponding to the position of the movable module 23, and the movable module 23 is provided with a step 31 for accommodating the rib 30 to limit the workpiece at the movable module 23.

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is that this embodiment also includes a positioning pin 32 and a positioning sleeve 33 cooperating with the positioning pin 32, the positioning pin 32 is arranged on the die 20, the positioning sleeve 33 is arranged on the punch 3, and two of them are arranged respectively, and two positioning holes are provided on the prefabricated raw material plate 18 for producing the lower thrust rod bracket plate, and the workpiece is positioned through the positioning holes and the positioning pin 32. The upper die assembly 1 of this embodiment also includes an upper die seat 34 and multiple groups of upper stripping assemblies 35 arranged on the upper die seat 34, the upper stripping assemblies 35 include guide pins and rectangular coil springs connected to the guide pins, the rectangular coil springs are arranged on the upper die seat 34, and the upper stripping assemblies 35 penetrate the punch 3. After the mold is closed and stamped, the upper die assembly 1 rises with the bed until the upper and lower dies are completely separated. In this process, the guide pins of the upper stripping assembly 35 push out the punch 3 to prevent the workpiece from sticking to the punch 3 after stamping. This embodiment also includes a guide plate 36 and a retaining wall key 37. The first fixed module 21, the second fixed module 22 are respectively provided with a retaining wall key 37 between the inner wall of the lower mold frame 19 to facilitate the removal of the fixed modules. The lower mold frame 19 is respectively provided with guide grooves 38 on both sides adjacent to the movable module 23. The movable module 23 and the punch 3 are respectively provided with guide plates 36 at positions corresponding to the guide grooves 38 to ensure the mutual alignment of the punch 3 and the die 20.

[0043] During use, the present application can effectively limit the workpiece, prevent the workpiece from being displaced or warped when stamping in the mold, and can also quickly separate the workpiece from the mold to improve the stamping efficiency.

[0044] In addition, in the description of the present utility model, unless otherwise specified, if the terms "multiple", "multiple roots", "multiple groups" are used, they mean two or more than two, and "several", "several roots", "several groups" mean one or more than one. In the description of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, it is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", "third" are used, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] The specific implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A primary forming mold, comprising an upper mold assembly (1) and a lower mold assembly (2), wherein the upper mold assembly (1) comprises a male mold (3), and the lower mold assembly (2) comprises a female mold (20) for receiving the male mold (3), characterized in that: A stamping area is arranged at the lower end of the punch (3), and the stamping area comprises a first stamping area (4), a second stamping area (5), a third stamping area (6), a fourth stamping area (7), a fifth stamping area (8), a sixth stamping area (9) and a seventh stamping area (10); A pressure-bearing surface is provided at the upper end of the die (20), and the pressure-bearing surface comprises a first pressure-bearing surface (11), a second pressure-bearing surface (12), a third pressure-bearing surface (13), a fourth pressure-bearing surface (14), a fifth pressure-bearing surface (15), a sixth pressure-bearing surface (16) and a seventh pressure-bearing surface (17) corresponding to the first stamping area (4), the second stamping area (5), the third stamping area (6), the fourth stamping area (7), the fifth stamping area (8), the sixth stamping area (9) and the seventh stamping area (10), respectively; When preparing the lower thrust rod bracket plate, a prefabricated raw material plate (18) is placed on the die (20), the upper die assembly (1) and the lower die assembly (2) are controlled to close the die, and the stamping area of ​​the punch (3) cooperates with the pressure-bearing surface of the die (20) to perform initial molding on the prefabricated raw material plate (18).

2. A primary forming mold according to claim 1, characterized in that: The first pressure-bearing surface (11) is a groove-shaped curved surface, and the second pressure-bearing surface (12), the third pressure-bearing surface (13), the fourth pressure-bearing surface (14), the fifth pressure-bearing surface (15), the sixth pressure-bearing surface (16) and the seventh pressure-bearing surface (17) are all slope surfaces.

3. A primary forming mold according to claim 2, characterized in that: The lower mold assembly (2) further comprises a lower mold frame (19); the female mold (20) comprises a first fixed mold block (21), a second fixed mold block (22) and a movable mold block (23); the first fixed mold block (21), the second fixed mold block (22) and the movable mold block (23) are arranged in the lower mold frame (19); and the movable mold block (23) can move up and down relative to the lower mold frame (19).

4. A primary forming mold according to claim 3, characterized in that: The lower die assembly (2) further comprises a lower die base (24), a nitrogen spring (25) and a lower cushion block (26); a lower die frame (19) is arranged above the lower die base (24); the nitrogen spring (25) is arranged on the lower die base (24) below the movable die block (23); and the lower cushion block (26) is arranged on the lower side of the lower die base (24) and below the nitrogen spring (25).

5. A primary forming mold according to claim 4, characterized in that: The lower die assembly (2) further comprises a discharge guide pin (27), wherein the discharge guide pin (27) is arranged on the lower side of the movable die block (23), and the lower die base (24) and the lower cushion block (26) are respectively provided with channels for accommodating the sliding of the discharge guide pin (27).

6. A primary forming mold according to claim 5, characterized in that: The lower die assembly (2) further comprises a lower pad (28), wherein the lower pad (28) is arranged between the lower die frame (19) and the lower die base (24), and the lower pad (28) is provided with circular holes for allowing the nitrogen spring (25) and the unloading guide pin (27) to pass through.

7. A primary forming mold according to claim 6, characterized in that: The lower die assembly (2) further comprises a material guiding frame (29), at least one material guiding frame (29) being respectively arranged on the front, rear, left and right sides of the female die (20), a retaining edge (30) being arranged at a corner of the male die (3) corresponding to the position of the movable die block (23), and a step (31) for receiving the retaining edge (30) being arranged on the movable die block (23).

8. A primary forming mold according to claim 7, characterized in that: It also includes a positioning pin (32) and a positioning sleeve (33) cooperating with the positioning pin (32), wherein the positioning pin (32) is arranged on the female mold (20), and the positioning sleeve (33) is arranged on the male mold (3), and two of each are arranged.

9. A primary forming mold according to claim 8, characterized in that: The upper die assembly (1) further comprises an upper die base (34) and a plurality of upper stripping assemblies (35) arranged on the upper die base (34), the upper stripping assemblies (35) comprising guide pins and rectangular coil springs connected to the guide pins, the rectangular coil springs being arranged on the upper die base (34), and the upper stripping assemblies (35) passing through the punch (3).

10. A primary forming mold according to claim 9, characterized in that: It also includes a guide plate (36) and a retaining wall key (37), wherein the retaining wall key (37) is provided between the first fixed module (21) and the second fixed module (22) and the inner wall of the lower mold frame (19), respectively, and guide grooves (38) are provided on both sides of the lower mold frame (19) adjacent to the movable module (23), and guide plates (36) are provided at positions corresponding to the guide grooves (38) on the movable module (23) and the punch (3).

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