High-precision automobile part stamping die

Abstract

The utility model discloses a high-precision automobile part stamping die, which relates to the technical field of automobile stamping dies, and comprises a lower die part, an upper die part, a positioning mechanism and a driving rod, the upper surface of the lower die part is provided with a concave die cavity for forming a workpiece, and the lower part of the upper die part is provided with a convex die; the male die is used for being matched with the female die cavity to conduct punch forming on a workpiece, the positioning mechanism is arranged on the lower die part and used for positioning the workpiece, the driving rod is vertically installed on the upper die part and located above one of the sliding rods, and the lower end of the driving rod is provided with a first inclined face facing the positioning mechanism. And the lower sliding rod is pushed to slide towards the female die cavity. According to the utility model, the workpiece can be effectively prevented from deviating during stamping, the stamping precision is improved to a certain extent, the reliability of the positioning mode is better, the service life is longer, and the potential safety hazard of feeding operation can be reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile stamping dies, in particular to a high-precision automobile parts stamping die. Background Art

[0002] As a kind of transportation, cars are common in daily life. Their production and manufacturing are extremely large-scale. The production and manufacturing of a car are completed by assembling various parts, and the production of car parts is mostly stamped by mechanical stamping dies. Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation, thereby obtaining the required parts. This processing method is very suitable for large-scale production of cars. At present, most of the auto parts on the market are stamped by placing the blank in a specific mold for stamping during stamping production.

[0003] Prior art CN 216027497 U discloses a high-precision stamping die for automobile parts, comprising an upper die plate, a lower die plate, an upper die block, a stamping block, a positioning rod, a lower die block, a guide column, a guide sleeve, an epitaxial block, a locking mechanism, a buffer mechanism, a workpiece positioning mechanism, a protective mechanism, etc. Although the design of the utility model prevents the processing of low-precision workpieces, reduces the scrap rate, and greatly improves the economic benefits, at the same time, because the telescopic spring and the positioning spring will be compressed at the same time during the precise positioning, and then play a certain auxiliary buffering and shock-absorbing role in the process of pressing the upper die block downward, which greatly improves the practicality of the utility model, but the utility model places the workpiece on the die before stamping. When the tool is in the middle, it is also necessary to additionally support the positioning for positioning, which undoubtedly increases the operating steps of the stamping work and makes the loading of the workpiece more cumbersome. The more cumbersome loading steps also invisibly increase the safety hazards of the loading work, and the utility model can only position the two sides of the workpiece, and lacks corresponding positioning in other directions. Therefore, the positioning accuracy needs to be further improved, and the positioning clamping of the utility model relies on the rebound reset of the reset spring. When the reset spring is used more times, its rebound effect will fail to a certain extent, which will further cause positioning deviation, and still affect the positioning accuracy. Therefore, there is still room for improvement. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a high-precision automobile parts stamping die, which 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 through the following technical solutions: a high-precision automobile parts stamping die, including a lower die part, an upper die part, a positioning mechanism and a driving rod, and also includes: a lower die part, the upper surface of which is provided with a concave die cavity for molding a workpiece; an upper die part, the lower part of which is provided with a convex die, the convex die is used to cooperate with the concave die cavity to stamp and mold the workpiece; a positioning mechanism, which is provided on the lower die part and is used to position the workpiece;

[0008] The positioning mechanism includes four guide rails which are distributed in a divergent manner and installed on the upper surface of the lower mold part. Sliding rods are installed in the four guide rails in a horizontal sliding direction. Racks are installed on the sliding rods. Reset springs are installed on the racks. One end of the reset spring away from the rack is connected to the guide rail. One end of the sliding rod close to the concave mold cavity is installed with a clamping rod for pushing the workpiece for positioning:

[0009] The positioning mechanism also includes four transmission shafts which are distributed in a divergent manner and installed on the outer periphery of the lower mold part, the four transmission shafts form a rectangle, gears meshing with the racks are installed on the four transmission shafts, and bevel gears are installed at both ends of each transmission shaft, the two bevel gears on the same transmission shaft are symmetrically distributed, and the two adjacent bevel gears mesh with each other, so that the four transmission shafts can rotate synchronously;

[0010] The driving rod is vertically mounted on the upper mold part and is located above one of the sliding rods, and the lower end of the driving rod is provided with a first inclined surface facing the positioning mechanism for pushing the sliding rod below it to slide toward the direction of the concave mold cavity.

[0011] Optionally, the lower die part includes a lower die base, a concave die fixing plate is installed on the upper surface of the lower die base, a concave die plate is installed on the upper surface of the concave die fixing plate, and the concave die cavity is opened on the upper surface of the concave die plate.

[0012] Optionally, the upper die part includes an upper die seat, a punch fixing plate is installed on the lower surface of the upper die seat, a punch mold plate is installed on the lower surface of the punch fixing plate, and the punch is installed on the punch mold plate.

[0013] Optionally, a guide assembly is also included, which includes a guide column installed on the lower die base and a guide sleeve installed on the upper die base, and the guide sleeve is mounted on the guide column to guide the stamping work.

[0014] Optionally, a second inclined surface is provided on one side of the clamping rod close to the die cavity, for squeezing the outer side of the workpiece so that the workpiece is tightly attached to the upper surface of the die plate.

[0015] Optionally, a roller is installed at one end of the sliding rod located below the driving rod away from the clamping rod, so as to reduce the friction between the sliding rod and the first inclined surface when the sliding rod is pushed by the first inclined surface to slide.

[0016] (III) Beneficial effects

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

[0018] 1. The four clamping rods can be used to clamp and position the workpiece on all sides. During the stamping process, the workpiece can be effectively prevented from deviating in the horizontal direction, which improves the stamping accuracy to a certain extent. The positioning of the four clamping rods is driven by the pressing and closing action of the upper die. Compared with the spring-driven clamping method, this method has better reliability and longer service life. At the same time, it does not require manual positioning during material discharge, so the operation steps of the loading work can be simplified, making the loading and unloading work simpler and more convenient. By reducing the material discharge steps of the staff, the time when the operator's hands are at the stamping station can be reduced, thereby reducing the safety hazards of the loading operation to a certain extent;

[0019] 2. The setting of the second inclined surface applies a certain downward pressure on the outer side of the workpiece to make the workpiece close to the upper surface of the concave template, preventing the edge of the workpiece from tilting during the stamping process, further ensuring the stamping accuracy, and the setting of the roller can effectively reduce the wear between the driving rod and the sliding rod, further improving the reliability and service life of the positioning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the side-view three-dimensional explosion structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower mold part of the utility model from top view;

[0023] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the utility model in a side view in a mold-closing state;

[0024] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1. lower die part; 101. lower die base; 102. concave die fixing plate; 103. concave die plate; 2. upper die part; 201. upper die base; 202. punch fixing plate; 203. punch die plate; 3. positioning mechanism; 301. guide rail; 302. sliding rod; 303. clamping rod; 3031. second inclined surface; 304. rack; 305. transmission shaft; 306. gear; 307. bevel gear; 308. roller; 309. reset spring; 4. driving rod; 401. first inclined surface; 5. guide assembly; 501. guide column; 502. guide sleeve; 6. concave die cavity; 7. punch. DETAILED DESCRIPTION

[0026] 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.

[0027] The utility model provides Figures 1 to 5 An embodiment of a high-precision stamping die for automobile parts is shown:

[0028] It includes a lower mold part 1, an upper mold part 2, a positioning mechanism 3 and a driving rod 4, and also includes:

[0029] The lower mold part 1 has a concave mold cavity 6 on its upper surface for molding the workpiece;

[0030] The lower die part 1 comprises a lower die base 101, a concave die fixing plate 102 is mounted on the upper surface of the lower die base 101, a concave die plate 103 is mounted on the upper surface of the concave die fixing plate 102, and a concave die cavity 6 is opened on the upper surface of the concave die plate 103;

[0031] The upper die part 2 has a punch 7 installed at the lower part, and the punch 7 is used to cooperate with the die cavity 6 to stamp the workpiece;

[0032] The upper die part 2 includes an upper die base 201, a punch fixing plate 202 is installed on the lower surface of the upper die base 201, a punch plate 203 is installed on the lower surface of the punch fixing plate 202, and the punch 7 is installed on the punch plate 203;

[0033] The guide assembly 5 includes a guide column 501 installed on the lower die base 101 and a guide sleeve 502 installed on the upper die base 201. The guide sleeve 502 is sleeved on the guide column 501 to guide the stamping work and ensure the accuracy during the mold closing process.

[0034] A positioning mechanism 3 is provided on the lower die part 1 and is used to position the workpiece;

[0035] The positioning mechanism 3 includes four guide rails 301 which are distributed in a divergent shape and installed on the upper surface of the lower mold part 1. Sliding rods 302 are installed in the four guide rails 301 so as to slide in the horizontal direction. A rack 304 is installed on the sliding rod 302. A return spring 309 is installed on the rack 304. The end of the return spring 309 away from the rack 304 is connected to the guide rail 301. A clamping rod 303 for pushing the workpiece for positioning is installed on the end of the sliding rod 302 close to the concave mold cavity 6.

[0036] The positioning mechanism 3 also includes four transmission shafts 305 which are distributed in a divergent manner and installed on the outer periphery of the lower mold part 1. The four transmission shafts 305 form a rectangle. Gears 306 meshing with the rack 304 are installed on the four transmission shafts 305, and bevel gears 307 are installed at both ends of each transmission shaft 305. The two bevel gears 307 on the same transmission shaft 305 are symmetrically distributed, and two adjacent bevel gears 307 mesh with each other, so that the four transmission shafts 305 can rotate synchronously;

[0037] The driving rod 4 is vertically mounted on the upper mold part 2 and is located above one of the sliding rods 302, and the lower end of the driving rod 4 is provided with a first inclined surface 401 facing the positioning mechanism 3, which is used to push the sliding rod 302 below it to slide toward the direction of the female mold cavity 6;

[0038] A roller 308 is installed at one end of the sliding rod 302 located below the driving rod 4 and away from the clamping rod 303, so as to reduce the friction between the sliding rod 302 when the first inclined surface 401 pushes the sliding rod 302 to slide.

[0039] Before stamping, the lower die part 1 and the upper die part 2 are in the open die state, and the workpiece is placed on the concave die plate 103 in the correct direction, and ensure that the workpiece is located between the four clamping rods 303. Then the upper die part 2 moves downward under the drive of the punching machine and starts to close the die. During this process, the first inclined surface 401 at the lower end of the driving rod 4 will contact the roller 308 on the sliding rod 302 below it first, and push the sliding rod 302 and the clamping rod 303 at its end to slide along the guide rail 301 toward the workpiece. At the same time, the sliding rod 302 will also drive the gear 306 and the transmission shaft 305 below it to rotate around its own axis by driving the rack 304 to slide synchronously. Then the transmission shaft 305 drives the two adjacent transmission shafts 305 to rotate synchronously through the two sets of bevel gears 307 at its two ends. The two transmission shafts 305 are then driven by the two ends. The bevel gear 307 drives another transmission shaft 305 to rotate synchronously, so that when one of the transmission shafts 305 rotates, the other three transmission shafts 305 will also rotate synchronously, and the three transmission shafts 305 respectively drive the three racks 304 meshing with each other through the three gears 306 installed in the middle to slide along their respective guide rails 301 toward the workpiece, thereby driving the other three sliding rods 302 and the clamping rod 303 to slide in the direction of the workpiece, so as to push the workpiece around through the four clamping rods 303 until the first inclined surface 401 is separated from the roller 308, and the four clamping rods 303 just push the workpiece to the stamping station above the die cavity 6, and thereby position the workpiece in four directions to prevent the workpiece from deviating during the stamping process, and then the upper die part 2 continues to press down to punch the workpiece into the die cavity 6 through the punch 7, so as to stamp the workpiece.

[0040] like Figure 4 and Figure 5 As shown, a second inclined surface 3031 is provided on the side of the clamping rod 303 close to the die cavity 6, which is used to squeeze the outside of the workpiece and apply a certain downward pressure to the outside of the workpiece to make the workpiece close to the upper surface of the die plate 103 to prevent the edge of the workpiece from warping and tilting during the stamping process.

[0041] 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 high-precision automobile parts stamping die, comprising a lower die part (1), an upper die part (2), a positioning mechanism (3) and a driving rod (4), characterized in that: Also includes: The lower mold part (1) has an upper surface provided with a concave mold cavity (6) for molding a workpiece; The upper die part (2) has a punch (7) installed at the lower part, and the punch (7) is used to cooperate with the die cavity (6) to stamp and form the workpiece; A positioning mechanism (3) is provided on the lower die part (1) and is used to position the workpiece; The positioning mechanism (3) comprises four guide rails (301) which are distributed in a divergent manner and installed on the upper surface of the lower mold part (1), and a sliding rod (302) is installed in the four guide rails (301) so as to slide in the horizontal direction, a rack (304) is installed on the sliding rod (302), a return spring (309) is installed on the rack (304), and the end of the return spring (309) away from the rack (304) is connected to the guide rail (301), and a clamping rod (303) for pushing the workpiece for positioning is installed on the end of the sliding rod (302) close to the concave mold cavity (6): The positioning mechanism (3) further comprises four transmission shafts (305) which are distributed in a divergent manner and are mounted on the outer periphery of the lower mold part (1), the four transmission shafts (305) forming a rectangle, gears (306) meshing with the racks (304) being mounted on the four transmission shafts (305), and bevel gears (307) being mounted at both ends of each transmission shaft (305), the two bevel gears (307) on the same transmission shaft (305) being symmetrically distributed, and two adjacent bevel gears (307) being meshed with each other, so that the four transmission shafts (305) can rotate synchronously; The driving rod (4) is vertically mounted on the upper mold part (2) and is located above one of the sliding rods (302), and the lower end of the driving rod (4) is provided with a first inclined surface (401) facing the positioning mechanism (3) for pushing the sliding rod (302) below it to slide in the direction of the female mold cavity (6).

2. A high-precision automobile parts stamping die according to claim 1, characterized in that: The lower die part (1) comprises a lower die base (101), a die fixing plate (102) is mounted on the upper surface of the lower die base (101), a die plate (103) is mounted on the upper surface of the die fixing plate (102), and the die cavity (6) is opened on the upper surface of the die plate (103).

3. A high-precision automobile parts stamping die according to claim 1, characterized in that: The upper die part (2) comprises an upper die seat (201), a punch fixing plate (202) is mounted on the lower surface of the upper die seat (201), a punch plate (203) is mounted on the lower surface of the punch fixing plate (202), and the punch (7) is mounted on the punch plate (203).

4. A high-precision automobile parts stamping die according to claim 3, characterized in that: The invention also comprises a guide assembly (5), wherein the guide assembly (5) comprises a guide column (501) mounted on the lower die base (101) and a guide sleeve (502) mounted on the upper die base (201), wherein the guide sleeve (502) is sleeved on the guide column (501) and is used for guiding the stamping work.

5. A high-precision automobile parts stamping die according to claim 4, characterized in that: The clamping rod (303) is provided with a second inclined surface (3031) on one side close to the concave die cavity (6) for squeezing the outer side of the workpiece so that the workpiece is closely attached to the upper surface of the concave die plate (103).

6. The high-precision automobile parts stamping die according to claim 1, characterized in that: A roller (308) is installed at one end of the sliding rod (302) located below the driving rod (4) and away from the clamping rod (303) to reduce the friction between the sliding rod (302) and the first inclined surface (401) when the sliding rod (302) is pushed to slide.

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