Automobile stamping die capable of preventing deformation

Abstract

The utility model discloses an automobile stamping die capable of preventing deformation, and relates to the technical field of dies for automobile part production, the automobile stamping die comprises a lower die part and an upper die part, the lower die part comprises a lower die base and a concave die plate installed on the lower die base, and two sets of symmetrically arranged anti-deformation positioning assemblies are arranged on the lower die base. The anti-deformation positioning assembly is arranged on the upper die part and used for positioning a plate in the process of punch forming of the plate, the anti-deformation positioning assembly comprises a first transmission pipe and a second transmission pipe, one ends of the first transmission pipe and the second transmission pipe are closed, the other ends of the first transmission pipe and the second transmission pipe are open, and an edge pressing assembly is arranged on the upper die part and used for preventing the edge of the plate from tilting and deforming when the plate is subjected to punch forming. The punching positioning device can play a role in punching positioning, and enables the stress of a plate to be more uniform, so that the deflection of the plate caused by non-uniform stress during punching is avoided, the upper edge of the plate can be prevented from tilting upwards to a certain extent, and the unnecessary movement of the plate in the punching process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of dies for producing automobile parts, in particular to an automobile stamping die capable of preventing deformation. Background Art

[0002] A car is a mobile tool formed by assembling many parts together. There are many processing methods used in the production and processing of auto parts. Stamping of auto parts is one of them. Stamping is a pressure processing method that uses a mold installed on a press at room temperature to apply pressure to the material to separate or plastically deform it, thereby obtaining the required parts. There are many auto parts, and stamping is an important forming step.

[0003] However, when stamping long strips of sheet material, since the lengths of the sheet material, the die cavity and the punch are all certain, there is a possibility of uneven force during stamping, causing the sheet material to be skewed during stamping, and then causing the stamped parts to deform and be scrapped, affecting the yield rate of the stamped parts. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides an automobile stamping die that prevents deformation, and solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions: an automobile stamping die for preventing deformation, comprising a lower die part and an upper die part, wherein the lower die part comprises a lower die base and a concave die plate installed on the lower die base, and the lower die base is provided with two groups of symmetrically arranged anti-deformation positioning components, which are used to position the plate during the stamping process of the plate to prevent the plate from being deformed due to skew;

[0008] The anti-deformation positioning assembly includes a first transmission tube with one end being closed and the other end being open, and a second transmission tube, wherein the first transmission tube is mounted on the lower die base, and the axial direction is the same as the stamping direction of the die, and the second transmission tube is mounted on the concave die plate, and the axial direction is horizontally arranged and perpendicular to the length direction of the plate;

[0009] The anti-deformation positioning assembly further includes a conduit for connecting the first transmission pipe with the second transmission pipe, and hydraulic oil is provided inside the first transmission pipe, the second transmission pipe and the conduit, and a first piston for driving the hydraulic oil to move is provided inside the first transmission pipe, and a first piston rod is provided on the first piston for driving the first piston to slide, and one end of the first piston rod extends to the outside through the opening end of the first transmission pipe;

[0010] A second piston driven by hydraulic oil is arranged in the second transmission tube, a second piston rod is installed on the second piston, one end of the second piston rod can extend to the outside through the opening end of the second transmission tube, and a push plate is installed on the outer end of the second piston rod, and a limiting groove for limiting the edge of the plate is opened on the push plate;

[0011] The upper die part is provided with a edge pressing assembly, which is used to prevent the edge of the plate from warping and deforming when the plate is stamped.

[0012] Optionally, a concave mold plate is provided with a concave mold cavity for forming the sheet material, and a positioning groove is provided at the outer periphery of the opening of the concave mold cavity for positioning the sheet material when loading.

[0013] Optionally, the lower die part also includes a guide sleeve, which is installed on the lower die base and is used to guide the stamping movement of the upper die part.

[0014] Optionally, the anti-deformation positioning assembly also includes a first return spring, which is arranged outside the first piston rod and has two ends respectively connected to the first transmission tube and the first piston rod, and is used to drive the first piston rod to return to its original position after sliding.

[0015] Optionally, the upper mold part includes an upper mold base and a convex mold plate installed on the upper mold base, the convex mold plate is installed with a convex mold for cooperating with the concave mold cavity to stamp the sheet material, and the upper mold base is also installed with a guide column for cooperating with the guide sleeve to guide the stamping movement of the upper mold part.

[0016] Optionally, the edge pressing assembly is arranged on the male mold plate and is located on the outer side of the male mold.

[0017] Optionally, the edge pressing assembly includes two symmetrically arranged pressing frames, on which pressing rollers are installed for pressing on the upper surface of the sheet when the sheet is stamped and formed, and a sliding plate is also installed on the pressing frame, and a sliding groove matching the sliding plate is provided on the convex mold plate, the sliding plate is slidably installed in the sliding groove, and a pressure spring is installed on the sliding plate for applying pressure to the pressing roller, and the upper end of the pressure spring is connected to the upper mold base.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The two push plates are always against the edge of the plate through the limit groove, and synchronously assist in pushing the edge of the plate to slide in the middle direction, so that the limit groove is always in contact with the edge of the plate, so as to play the role of stamping positioning and effectively prevent the plate from being skewed during the stamping process. At the same time, the auxiliary push can make the force of the plate more uniform, thereby avoiding the skew of the plate due to uneven force during stamping, thereby avoiding the deformation and scrapping of the stamping parts, and ensuring the yield rate of the stamping parts;

[0021] 2. The pressure roller applies pressure to the upper surface of the plate, so that during the stamping process, the pressure roller can also press and limit the upper surface of the plate, and cooperate with the limit groove to prevent the upper edge from curling up to a certain extent, so that the edge of the plate can slide smoothly to the middle as the stamping proceeds, thereby preventing unnecessary movement of the plate during the stamping process to a certain extent, and playing a certain positive role in the stamping work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional explosion structure of the utility model;

[0023] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model from a side view;

[0024] Figure 3 This is a side view of the three-dimensional structure of the lower mold part of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the upper mold part of the utility model when viewed from above;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the anti-deformation positioning component of the utility model;

[0027] Figure 6 It is a schematic diagram of the partial structure of the upper mold part in a side view and section view of the utility model.

[0028] In the figure: 1. lower mold part; 101. lower mold base; 102. concave mold plate; 103. concave mold cavity; 104. guide sleeve; 2. upper mold part; 201. upper mold base; 202. convex mold plate; 2021. slide groove; 203. punch; 204. guide column; 3. anti-deformation positioning assembly; 301. first transmission tube; 302. first piston; 303. first piston rod; 304. first return spring; 305. guide tube; 306. second transmission tube; 307. second piston; 308. second piston rod; 309. push plate; 3010. limit groove; 4. edge pressing assembly; 401. pressure frame; 402. pressure roller; 403. sliding plate; 404. pressure spring. DETAILED DESCRIPTION

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

[0030] The utility model provides Figures 1 to 6 An embodiment of a stamping die for automobiles to prevent deformation is shown: it comprises a lower die part 1 and an upper die part 2, the lower die part 1 comprises a lower die base 101 and a concave die plate 102 mounted on the lower die base 101, a concave die plate 102 is provided with a concave die cavity 103 for forming a sheet material, and a positioning groove is provided at the outer periphery of the opening of the concave die cavity 103 for positioning the sheet material when feeding;

[0031] The lower die part 1 further includes a guide sleeve 104, which is mounted on the lower die base 101 and is used to guide the stamping movement of the upper die part 2;

[0032] The upper die part 2 includes an upper die base 201 and a male die plate 202 mounted on the upper die base 201. The male die plate 202 is mounted with a male die 203 for cooperating with the female die cavity 103 to perform stamping forming on the sheet. The upper die base 201 is also mounted with a guide column 204 for cooperating with the guide sleeve 104 to guide the stamping movement of the upper die part 2.

[0033] The lower die base 101 is used for connecting with the working table of the punching machine to realize the purpose of installing the lower die part 1 on the punching machine, and the upper die base 201 is used for connecting with the driving part of the punching machine to realize the purpose of installing the upper die part 2 on the driving part of the punching machine. Figure 1 and Figure 2 As shown, during stamping, the sheet is first placed in the positioning groove on the die cavity 103, and then the punch pushes the upper die part 2 downward through the driving part to close the die with the lower die part 1. During this process, the punch 203 presses the sheet downward and inserts into the die cavity 103 until it is completely closed, and the stamping process is completed. Then the punch drives the lower die part 1 upward and resets to open the die. After the die opening is completed, the stamped part is taken out to complete the entire stamping process.

[0034] like Figures 1 to 5 As shown, two groups of symmetrically arranged anti-deformation positioning components 3 are provided on the lower die base 101, which are used to position the plate during the stamping process to prevent the plate from being deformed due to skewing;

[0035] The anti-deformation positioning assembly 3 includes a first transmission tube 301 with one end being closed and the other end being open, and a second transmission tube 306. The first transmission tube 301 is mounted on the lower die base 101, and the axial direction is the same as the stamping direction of the die. The second transmission tube 306 is mounted on the concave die plate 102, and the axial direction is horizontally arranged and perpendicular to the length direction of the plate.

[0036] The anti-deformation positioning assembly 3 further includes a conduit 305 for connecting the first transmission pipe 301 and the second transmission pipe 306, and hydraulic oil is provided inside the first transmission pipe 301, the second transmission pipe 306 and the conduit 305, and a first piston 302 for driving the hydraulic oil to move is provided inside the first transmission pipe 301, and a first piston rod 303 is provided on the first piston 302 for driving the first piston 302 to slide, and one end of the first piston rod 303 extends to the outside through the opening end of the first transmission pipe 301;

[0037] A second piston 307 driven by hydraulic oil is provided in the second transmission tube 306, a second piston rod 308 is installed on the second piston 307, one end of the second piston rod 308 can extend to the outside through the opening end of the second transmission tube 306, and a push plate 309 is installed on the outer end of the second piston rod 308, a limiting groove 3010 for limiting the edge of the plate is opened on the push plate 309, and the push plate 309 is located in the positioning groove;

[0038] After the sheet is placed in the positioning groove, the sheet is located between the two push plates 309. Then, when the upper die portion 2 moves downward to stamp the sheet, the upper die seat 201 will contact the first piston rod 303 in advance. At this time, there is still a certain distance between the punch 203 and the sheet. Then the upper die portion 2 continues to move downward and presses the first piston rod 303 downward through the upper die seat 201, thereby pushing the hydraulic oil in the first transmission pipe 301 through the first piston 302. In this process, the hydraulic oil will directly push the second piston 307, the second piston rod 308 and the push plate 309 to slide in the direction of the sheet. The upper mold part 2 moves, and the sliding speed is the same as the downward speed of the upper mold part 2, so that the push plate 309 is sleeved on the edge of the plate through the limit groove 3010, and then the upper mold part 2 continues to descend so that the punch 203 contacts the plate and punches it downward. During this process, the two push plates 309 are always against the edge of the plate through the limit groove 3010, and synchronously assist in pushing the edge of the plate to slide in the middle direction, so that the limit groove 3010 is always in contact with the edge of the plate, thereby playing the role of stamping positioning, thereby avoiding the skewness of the plate due to uneven force during stamping.

[0039] like Figure 5As shown, the anti-deformation positioning assembly 3 further includes a first return spring 304, which is arranged outside the first piston rod 303, and the two ends of the first return spring 304 are respectively connected to the first transmission tube 301 and the first piston rod 303, and is used to drive the first piston rod 303 to return after sliding;

[0040] When the upper die base 201 presses the first piston rod 303 to slide down, the first return spring 304 will also be compressed to store energy. Therefore, when the upper die base 201 opens the mold and moves upward, the first return spring 304 will rebound and push the first piston rod 303 and the first piston 302 to reset. Then, the second piston 307, the second piston rod 308 and the push plate 309 are pulled back to their original positions through hydraulic oil to carry out the next round of stamping positioning.

[0041] like Figure 1 , Figure 2 , Figure 4 as well as Figure 6 As shown, the upper die part 2 is provided with a edge clamping assembly 4 for preventing the edge of the plate from warping and deforming when the plate is stamped and formed. The edge clamping assembly 4 is arranged on the male die plate 202 and located on the outer side of the male die 203 .

[0042] The edge pressing assembly 4 includes two symmetrically arranged pressing frames 401, on which a pressing roller 402 is installed for pressing the upper surface of the sheet when the sheet is stamped and formed, and a sliding plate 403 is also installed on the pressing frame 401, and a sliding groove 2021 matching the sliding plate 403 is provided on the convex mold plate 202, and the sliding plate 403 is slidably installed in the sliding groove 2021, and a pressure spring 404 is installed on the sliding plate 403 for applying pressure to the pressing roller 402, and the upper end of the pressure spring 404 is connected to the upper mold base 201.

[0043] When the upper mold part 2 moves downward and makes the upper mold base 201 contact with the first piston rod 303, the pressure roller 402 also just contacts with the plate, and then the upper mold part 2 continues to move downward, and under the obstruction of the plate, the pressure frame 401 can be pushed to shrink into the slide groove 2021 on the convex mold plate 202, and at the same time, the pressure spring 404 can be squeezed through the sliding plate 403 to shrink it. In this process, the rebound force of the pressure spring 404 can be used to press the plate through the pressure roller 402, so that in the process of stamping the plate, the pressure roller 402 can also press and limit the upper surface of the plate, and cooperate with the limit groove 3010 to prevent its upper edge from warping upward to a certain extent, so that the edge of the plate can slide smoothly to the middle as the stamping progresses.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deformation-preventing automobile stamping die, comprising a lower die part (1) and an upper die part (2), characterized in that: The lower die part (1) comprises a lower die base (101) and a concave die plate (102) mounted on the lower die base (101); the lower die base (101) is provided with two groups of symmetrically arranged anti-deformation positioning components (3) for positioning the plate during the stamping process to prevent the plate from being deformed due to skewing; The anti-deformation positioning component (3) comprises a first transmission tube (301) having one end being closed and the other end being open, and a second transmission tube (306), wherein the first transmission tube (301) is mounted on the lower die base (101), and the axial direction is the same as the stamping direction of the die, and the second transmission tube (306) is mounted on the concave die plate (102), and the axial direction is horizontally arranged and perpendicular to the length direction of the plate; The anti-deformation positioning assembly (3) further comprises a conduit (305) for connecting the first transmission tube (301) and the second transmission tube (306), and hydraulic oil is provided inside the first transmission tube (301), the second transmission tube (306) and the conduit (305), and a first piston (302) for driving the hydraulic oil to move is provided inside the first transmission tube (301), and a first piston rod (303) is provided on the first piston (302) for driving the first piston (302) to slide, and one end of the first piston rod (303) extends to the outside through the open end of the first transmission tube (301); A second piston (307) driven by hydraulic oil is arranged in the second transmission tube (306), a second piston rod (308) is installed on the second piston (307), one end of the second piston rod (308) can extend to the outside through the open end of the second transmission tube (306), and a push plate (309) is installed on the outer end of the second piston rod (308), and a limiting groove (3010) for limiting the edge of the plate is opened on the push plate (309); The upper die part (2) is provided with an edge pressing assembly (4) for preventing the edge of the plate from warping and deforming when the plate is being stamped.

2. The automobile stamping die for preventing deformation according to claim 1, characterized in that: The concave mold plate (102) is provided with a concave mold cavity (103) for forming a plate, and a positioning groove is provided on the outer periphery of the opening of the concave mold cavity (103) for positioning the plate when loading it.

3. The automobile stamping die for preventing deformation according to claim 1, characterized in that: The lower die part (1) further comprises a guide sleeve (104), which is mounted on the lower die base (101) and is used to guide the stamping movement of the upper die part (2).

4. The automobile stamping die for preventing deformation according to claim 1, characterized in that: The anti-deformation positioning assembly (3) also includes a first return spring (304), which is arranged outside the first piston rod (303) and has two ends respectively connected to the first transmission tube (301) and the first piston rod (303), and is used to drive the first piston rod (303) to return to its original position after sliding.

5. The automobile stamping die for preventing deformation according to claim 4, characterized in that: The upper die portion (2) comprises an upper die base (201) and a male die plate (202) mounted on the upper die base (201); a male die (203) is mounted on the male die plate (202) for cooperating with a female die cavity (103) to perform stamping forming on a sheet; a guide column (204) is also mounted on the upper die base (201) for cooperating with a guide sleeve (104) to guide the stamping movement of the upper die portion (2).

6. The automobile stamping die for preventing deformation according to claim 5, characterized in that: The edge pressing assembly (4) is arranged on the male mold plate (202) and is located outside the male mold (203).

7. The automobile stamping die for preventing deformation according to claim 6, characterized in that: The edge pressing assembly (4) comprises two symmetrically arranged pressing frames (401), a pressing roller (402) being installed on the pressing frame (401) for pressing on the upper surface of the plate when the plate is stamped and formed, and a sliding plate (403) is also installed on the pressing frame (401), a sliding groove (2021) matching the sliding plate (403) is opened on the convex mold plate (202), the sliding plate (403) is slidably installed in the sliding groove (2021), and a pressure spring (404) is installed on the sliding plate (403) for applying pressure to the pressing roller (402), and the upper end of the pressure spring (404) is connected to the upper mold base (201).

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