Secondary forming die

Abstract

The utility model discloses a secondary forming die, and belongs to the field of automobile structural part die design. Comprising an upper die assembly and a lower die assembly, the lower die assembly is used for limiting a turnover wall forming area and a central plate body protrusion forming area according to the structural requirement of a lower thrust rod support plate, a workpiece obtained after primary stamping is placed on the lower die assembly and positioned, and when the upper die assembly and the lower die assembly are aligned to be closed, the workpiece is formed. The upper die assembly is used for carrying out punch forming on a turnover wall and a central plate body bulge of the workpiece in the corresponding forming area; the stamping die is simple in structure, high in operability and high in stamping precision, and meets the high-precision machining requirement of automobile parts.

Description

Technical Field

[0001] The utility model relates to a secondary molding die, in particular to a secondary molding die in the production and manufacturing 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), which includes a central plate body and a bent wall on the plate body. The central plate body is provided with a matching hole groove, such as Fig.10 The structure of the lower thrust rod bracket plate is relatively complex, and multiple stamping dies are required for multiple stamping processes, including primary forming (stamping the central plate), secondary forming (bending the wall, etc.), separation and shaping, etc. After the secondary forming, the product is basically fully formed, and then the separation process is carried out. Therefore, the stamping die for the secondary forming plays an important role in the production process of the entire product.

[0004] The existing secondary molding die for the lower thrust rod bracket plate has low processing accuracy during stamping production, which makes it inconvenient to quickly remove the workpiece and accurately place it into the die, resulting in poor operability, thereby reducing production efficiency. In addition, the overall volume of the die body is large, the die structure is complex, and the cost is high. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a secondary molding die.

[0006] The technical solution adopted by the utility model is: designing a secondary molding mold, including an upper mold assembly and a lower mold assembly, the lower mold assembly is used to define the folding wall molding area and the central plate body protrusion molding area according to the structural requirements of the lower thrust rod bracket plate, the workpiece after the initial stamping is placed on the lower mold assembly and positioned, and when the upper mold assembly is aligned and molded with the lower mold assembly, the upper mold assembly performs folding wall and central plate body protrusion stamping molding on the workpiece in the corresponding molding area.

[0007] Furthermore, the upper mold assembly includes an upper mold base and a punch arranged on the upper mold base, and the lower mold assembly includes a lower mold base and a die arranged on the lower mold base, and the die is provided with a folding wall forming area and a central plate body protrusion forming area, and the folding wall forming area includes a first folding wall forming area and a second folding wall forming area.

[0008] Furthermore, the die includes a first fixed module, a second fixed module, a third fixed module, a fourth fixed module and a movable module, the first fixed module and the second fixed module are arranged on the left side of the movable module, and the third fixed module and the fourth fixed module are arranged on the right side of the movable module.

[0009] Furthermore, the first fixed module and the second fixed module form a first folding wall forming area, the third fixed module and the fourth fixed module form a second folding wall forming area, and the central plate body raised forming area is arranged on the first fixed module.

[0010] Furthermore, the lower die assembly also includes a lower pad, a lower pad block, a nitrogen spring and a discharge guide pin. The lower pad and the lower pad block are respectively installed on the upper and lower sides of the lower die base. The nitrogen spring is installed on the lower pad block and the upper end is against the movable module. The discharge guide pin is installed on the movable module. The nitrogen spring and the discharge guide pin respectively pass through the lower die base and the lower pad.

[0011] Furthermore, the lower mold assembly also includes a lower mold frame, which is provided with a bottom plate, and the bottom plate is provided with a channel allowing the moving module to pass through, the first fixed module, the second fixed module, the third fixed module and the fourth fixed module are respectively installed on the bottom plate, and the moving module passes through the lower mold frame and rests on the lower pad.

[0012] Furthermore, the lower die assembly also includes positioning pins, two positioning pins are arranged on the movable die block, and positioning pin holes corresponding to the positioning pins are arranged on the male die.

[0013] Furthermore, the lower die assembly also includes a material guiding frame, and at least one material guiding frame is respectively arranged on the front, back, left, and right sides of the die.

[0014] Furthermore, the upper die assembly also includes an upper stripping assembly, which includes a rectangular coil spring and a stripping pin connected to the rectangular coil spring. The upper stripping assembly is installed on the upper die base and passes through the punch.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] During stamping, the utility model can accurately position the workpiece to be stamped in the middle of the inner side of the mold through structures such as the material guide frame and the positioning pin, and prevent the workpiece from being offset, thereby ensuring the final processing effect of the product and improving the processing accuracy. After the workpiece is stamped and formed, the workpiece is separated from the mold through the movable module and the upper stripping assembly, which is convenient for subsequent removal. The utility model is convenient for quickly removing the workpiece and accurately placing it into the mold, and has good operability, thereby improving production efficiency. In addition, the mold body has a simple structure, the upper mold is mainly a punch, and the lower mold is mainly a movable module and a fixed module surrounding the movable module, and the movable module and the fixed module are integrated through the lower mold frame, and the overall volume is not large (the upper mold base or lower mold base in the figure is for installing molds for other processes, so it is much larger than the size of the concave mold and the punch in this application, and the mold itself involved in this application is not large in volume), and the cost is not high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 Schematic diagram of the prefabricated raw material plate used to produce the lower thrust rod bracket plate.

[0019] Figure 2 A schematic diagram of a die assembly for initial stamping of a prefabricated raw material plate.

[0020] Figure 3 It is a schematic diagram of the axonometric drawing of the utility model.

[0021] Figure 4 This is a schematic diagram of the axonometric view of the utility model after the upper die base and the lower die base are hidden.

[0022] Figure 5 For Figure 4 Schematic diagram of the axonometric drawing after further hiding the lower mold frame and lower pad.

[0023] Figure 6 For Figure 5 Axonometric diagram showing the punch being further hidden.

[0024] Figure 7 It is a schematic diagram of an exploded view of the concave die (including some parts such as locating pins) of the utility model.

[0025] Figure 8 It is a schematic diagram of the lower mold frame of the utility model.

[0026] Fig. 9 It is a schematic diagram of the structure of the utility model after the workpiece is punched.

[0027] Fig.10 This is a schematic diagram of the structure of the lower thrust rod bracket plate that needs to be produced.

[0028] In the figure: 1. upper die assembly; 2. lower die assembly; 3. central plate raised forming area; 4. upper die base; 5. punch; 6. lower die base; 7. first folding wall forming area; 8. second folding wall forming area; 9. first fixed module; 10. second fixed module; 11. third fixed module; 12. fourth fixed module; 13. moving module; 14. lower pad; 15. lower pad; 16. nitrogen spring; 17. unloading guide pin; 18. lower die frame; 19. bottom plate; 20. positioning pin; 21. material guiding frame; 22. upper unloading assembly. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] Example 1

[0032] like Figure 3-Figure 9 As shown: A secondary molding mold includes an upper mold assembly 1 and a lower mold assembly 2, wherein the lower mold assembly 2 is used according to the structural requirements of the lower thrust rod bracket plate (the lower thrust rod bracket plate has a folded wall and a central plate body protrusion, such as Fig.10 As shown) defines the folded wall forming area and the central plate body protruding forming area 3, which is used to produce the lower thrust rod bracket plate (as shown Fig.10 Prefabricated raw material panels (such as Figure 1As shown) through the primary stamping die (the concave die component of the primary stamping die is as shown Figure 2 The workpiece formed after the initial stamping (the irregular surface on the central plate is stamped) is placed on the lower die assembly 2 and positioned. When the upper die assembly 1 is aligned with the lower die assembly 2 and the mold is closed, the upper die assembly 1 performs folding wall and central plate convex stamping on the workpiece in the corresponding forming area (the structural schematic diagram after stamping is shown in Fig. 9 shown).

[0033] The upper die assembly 1 includes an upper die base 4 and a punch 5 disposed on the upper die base 4, and the lower die assembly 2 includes a lower die base 6 and a die set on the lower die base 6. The die set is provided with a folding wall forming area and a central plate body protrusion forming area 3, and the folding wall forming area includes a first folding wall forming area 7 and a second folding wall forming area 8. The upper die assembly 1 and the lower die assembly 2 perform stamping forming on the workpiece through the punch 5 and the die set. The die set includes a first fixed module 9, a second fixed module 10, a third fixed module 11, a fourth fixed module 12 and a movable module 13, wherein the first fixed module 9 and the second fixed module 10 are disposed on the left side of the movable module 13, and the third fixed module 11 and the fourth fixed module 12 are disposed on the right side of the movable module 13, and the movable module 13 can move up and down relative to the first fixed module 9, the second fixed module 10, the third fixed module 11 and the fourth fixed module 12. The first fixed module 9 and the second fixed module 10 enclose a first folding wall forming area 7 , the third fixed module 11 and the fourth fixed module 12 enclose a second folding wall forming area 8 , and the central plate body raised forming area 3 is arranged on the first fixed module 9 .

[0034] The lower die assembly 2 also includes a lower pad 14, a lower pad block 15, a nitrogen spring 16 and a discharge guide pin 17. The lower pad 14 and the lower pad 15 are respectively installed on the upper and lower sides of the lower die base 6 to enhance the pressure-bearing capacity of the lower die assembly 2. The nitrogen spring 16 is installed on the lower pad block 15 and the upper end is against the movable module 13 to lift the movable module 13 after stamping is completed (six nitrogen springs 16 are provided). The discharge guide pin 17 (four are provided) is installed on the movable module 13. The nitrogen spring 16 and the discharge guide pin 17 respectively penetrate the lower die base 6 and the lower pad 14, and can slide in the lower die base 6 and the lower pad 14. The lower die assembly 2 also includes a lower die frame 18, and the lower die frame 18 is provided with a bottom plate 19. The bottom plate 19 is provided with a channel allowing the moving module 13 to pass through. The first fixed module 9, the second fixed module 10, the third fixed module 11 and the fourth fixed module 12 are respectively installed on the bottom plate 19, and the moving module 13 passes through the lower die frame 18 and abuts against the lower pad 14. The lower die assembly 2 also includes positioning pins 20, and two positioning pins 20 are provided on the moving module 13, and the male die 5 is provided with positioning pin 20 holes corresponding to the positioning pins 20. The lower die assembly 2 also includes a material guiding frame 21, and at least one material guiding frame 21 is respectively provided on the front, back, left and right sides of the female die, and specifically, six material guiding frames 21 are arranged around the moving module 13 array.

[0035] The upper die assembly 1 further includes an upper stripping assembly 22 , which includes a rectangular coil spring and a stripping pin connected to the rectangular coil spring. The upper stripping assembly 22 is installed on the upper die base 4 and passes through the punch 5 .

[0036] When using this mold to stamp a workpiece, the workpiece that has been stamped by the preliminary stamping mold is accurately placed on the die through the material guiding frame 21, and the positioning pin 20 on the die passes through the positioning hole on the workpiece to control the upper mold assembly 1 and the lower mold assembly 2 to close the mold. After the stamping is completed, the workpiece follower module 13 rises, and the workpiece is taken out to stamp the next piece.

[0037] 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.

[0038] 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 secondary molding die, comprising an upper die assembly (1) and a lower die assembly (2), characterized in that: The lower die assembly (2) is used to define the folding wall forming area and the central plate body protrusion forming area (3) according to the structural requirements of the lower thrust rod bracket plate. The workpiece after the initial stamping is placed on the lower die assembly (2) and positioned. When the upper die assembly (1) and the lower die assembly (2) are aligned and molded, the upper die assembly (1) performs folding wall and central plate body protrusion stamping on the workpiece in the corresponding forming area.

2. A secondary molding die according to claim 1, characterized in that: The upper mold assembly (1) comprises an upper mold base (4) and a male mold (5) arranged on the upper mold base (4); the lower mold assembly (2) comprises a lower mold base (6) and a female mold arranged on the lower mold base (6); a folding wall forming area and a central plate body protrusion forming area (3) are arranged on the female mold; the folding wall forming area comprises a first folding wall forming area (7) and a second folding wall forming area (8).

3. A secondary molding die according to claim 2, characterized in that: The die comprises a first fixed module (9), a second fixed module (10), a third fixed module (11), a fourth fixed module (12) and a movable module (13); the first fixed module (9) and the second fixed module (10) are arranged on the left side of the movable module (13), and the third fixed module (11) and the fourth fixed module (12) are arranged on the right side of the movable module (13).

4. A secondary molding die according to claim 3, characterized in that: The first fixed module (9) and the second fixed module (10) enclose a first folding wall forming area (7), the third fixed module (11) and the fourth fixed module (12) enclose a second folding wall forming area (8), and the central plate body raised forming area (3) is arranged on the first fixed module (9).

5. A secondary molding die according to claim 4, characterized in that: The lower die assembly (2) further comprises a lower pad (14), a lower pad block (15), a nitrogen spring (16) and a discharge guide pin (17); the lower pad (14) and the lower pad block (15) are respectively installed on the upper and lower sides of the lower die base (6); the nitrogen spring (16) is installed on the lower pad block (15) and the upper end thereof abuts against the movable module (13); the discharge guide pin (17) is installed on the movable module (13); the nitrogen spring (16) and the discharge guide pin (17) respectively penetrate the lower die base (6) and the lower pad (14).

6. A secondary molding die according to claim 5, characterized in that: The lower mold assembly (2) also includes a lower mold frame (18), the lower mold frame (18) is provided with a bottom plate (19), the bottom plate (19) is provided with a channel allowing the moving module (13) to pass through, the first fixed module (9), the second fixed module (10), the third fixed module (11) and the fourth fixed module (12) are respectively installed on the bottom plate (19), and the moving module (13) passes through the lower mold frame (18) and abuts against the lower pad (14).

7. A secondary molding die according to claim 6, characterized in that: The lower die assembly (2) further comprises positioning pins (20), two positioning pins (20) are arranged on the movable die block (13), and positioning pin (20) holes corresponding to the positioning pins (20) are arranged on the male die (5).

8. A secondary molding die according to claim 7, characterized in that: The lower die assembly (2) further comprises a material guiding frame (21), and at least one material guiding frame (21) is respectively arranged on the front, back, left and right sides of the die.

9. A secondary molding die according to claim 8, characterized in that: The upper die assembly (1) also includes an upper stripping assembly (22), which includes a rectangular coil spring and a stripping pin connected to the rectangular coil spring. The upper stripping assembly (22) is installed on the upper die base (4) and passes through the punch (5).

Images