Thermal forming positioning die for automobile parts

Abstract

The utility model discloses an automobile part thermal forming positioning die, and particularly relates to the technical field of automobile thermal forming positioning dies, the automobile part thermal forming positioning die comprises an upper die and a lower die, the lower die is arranged at the bottom of the upper die, and a positioning assembly used for aligning the upper die and the lower die is arranged between the upper die and the lower die; the positioning assembly comprises four limiting seats. According to the utility model, the upper die which deviates continuously moves downwards to extrude the telescopic limiting rod and the spring downwards, so that the telescopic limiting rod can apply reverse acting force to the side wall of the circular-truncated-cone-shaped limiting hole, and the upper die can be driven to move towards the direction opposite to the deviation until the upper die is aligned with the lower die; in addition, the opening of the bottom end of the circular-truncated-cone-shaped limiting hole is far larger than the diameter of the telescopic limiting rod, deviation smaller than or equal to the radius distance of the bottom end of the circular-truncated-cone-shaped limiting hole can be corrected and aligned, the adjusting range of the device is expanded, and the aligning and positioning effects of the device are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive hot forming positioning dies, and more specifically to a hot forming positioning die for automotive parts. Background Art

[0002] A hot forming die is a special forming tool that can withstand high temperatures and is used to shape specific thermoplastic materials into specific shapes to form various uniquely shaped parts required in the automotive manufacturing process. It is very different from other plastic forming tools, such as compression molding, lamination molding, etc. A hot forming die usually consists of components such as a die body, a die pad, a motion mechanism, and a water cooling system. Among them, the die body includes an upper die and a lower die. During the die closing process, the upper die and the lower die need to be aligned and consistent. If there are any tiny differences, it will affect the quality of the finally formed automotive parts.

[0003] Currently, the hot forming dies on the market achieve alignment between the upper and lower dies through limit rods arranged on the lower die and limit holes opened on the upper die. However, once the upper die has a slight offset, the limit rod on the lower die will not be able to insert into the limit hole in the upper die. At this time, manual adjustment is required. To solve this problem, the prior art discloses a hot forming positioning die for automotive parts in CN218256724U, which uses a guiding rod and an upper limit hole to help the upper die with a slight offset align with the lower die. However, in this hot forming die, once the offset distance of the upper die causes the center of the cross-sectional circle at the top of the guiding rod not to align with the center of the cross-sectional circle at the bottom of the upper limit hole, the presence of the guiding rod will affect the normal stamping operation of the upper die, and this offset still needs to be adjusted manually. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a hot forming positioning die for automotive parts. By continuously lowering the offset upper die to downwardly squeeze the telescopic limit rod and the spring, the telescopic limit rod can exert a reverse force on the side wall of the frustum-shaped limit hole, thereby driving the upper die to move in the direction opposite to the offset until the upper die and the lower die are aligned. Moreover, the opening at the bottom of the frustum-shaped limit hole in the utility model is much larger than the diameter of the telescopic limit rod, and it can correct and align the offset within a distance less than or equal to the radius of the bottom of the frustum-shaped limit hole, so as to expand the adjustment range of the utility model and enhance the alignment and positioning effect of the utility model to solve the problems appearing in the above-mentioned background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A hot forming positioning die for automotive parts, including an upper die and a lower die, the lower die is arranged at the bottom of the upper die, and a positioning component for aligning the upper die and the lower die is arranged between the upper die and the lower die;

[0006] The positioning component includes four limit seats, and the four limit seats are respectively installed at the four corners of the upper die. A frustum-shaped limit hole and a cylindrical through hole which are communicated with each other are arranged inside the limit seat. The cylindrical through hole is located at the top of the frustum-shaped limit hole. The opening at the bottom of the frustum-shaped limit hole is larger than the opening at the top end of the cylindrical through hole. A telescopic limit rod is arranged at the bottom of each limit seat. The top end of the telescopic limit rod is processed into a spherical shape. The diameter of the opening at the bottom end of the frustum-shaped limit hole is larger than the diameter of the telescopic limit rod;

[0007] A spring is fixed inside the telescopic limit rod. A fixed limit rod is fixed at the bottom end of the spring. The number of the fixed limit rods and the telescopic limit rods is set to four. The four fixed limit rods and the telescopic limit rods are respectively arranged at the four corners on the top of the lower die.

[0008] In a preferred embodiment, limit rod bases are fixed at the bottom ends of the four fixed limit rods, and the four limit rod bases are respectively fixed at the four corners on the top of the lower die.

[0009] In a preferred embodiment, cavities for accommodating the springs are arranged inside the four telescopic limit rods, and the diameter of the cavities is consistent with the diameter of the fixed limit rods.

[0010] In a preferred embodiment, the upper die includes an upper die base and an upper die core. The upper die core is installed at the middle position of the bottom of the upper die base. The four limit seats are respectively fixedly embedded at the four corners of the upper die base.

[0011] In a preferred embodiment, a punching machine connecting seat for connecting the punching head of the punching machine is fixed at the middle of the top of the upper die base.

[0012] In a preferred embodiment, the lower die includes a lower die base and a lower die core. The lower die core is installed at the middle position of the top of the lower die base. The lower die core is located directly below the upper die core. The four limit rod bases are respectively fixed at the four corners on the top of the lower die base.

[0013] In a preferred embodiment, a lower die mounting plate is fixedly arranged at the bottom of the lower die base, and the lower die mounting plate is installed on the processing table of the punching machine through bolts.

[0014] The technical effects and advantages of the present utility model:

[0015] 1. Aiming at the problem of a small adjustment range for offsets in the prior art, the utility model uses the continuous downward movement of the upper die with an offset to squeeze the telescopic limiting rod and the spring downward, enabling the telescopic limiting rod to exert a reverse force on the side wall of the frustum-shaped limiting hole, thereby driving the upper die to move in the direction opposite to the offset until the top end of the telescopic limiting rod aligns with the cylindrical through hole, achieving the effect of aligning the upper die and the lower die. Moreover, in the utility model, the opening at the bottom end of the frustum-shaped limiting hole is much larger than the diameter of the telescopic limiting rod, capable of correcting and aligning offsets within a distance less than or equal to the radius of the bottom end of the frustum-shaped limiting hole, so as to expand the adjustment range of the utility model and enhance the alignment and positioning effects of the utility model.

[0016] 2. By processing the top end of the telescopic limiting rod into a spherical shape, it helps to reduce the contact area between the top end of the telescopic limiting rod and the inside of the frustum-shaped limiting hole, thus facilitating the concentration of force and making it easier to use the offset limiting seat to squeeze the telescopic limiting rod and the spring downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present utility model;

[0018] Figure 2 is the bottom view of the present utility model;

[0019] Figure 3 is the cross-sectional view of the telescopic limiting rod and the limiting seat of the present utility model;

[0020] Figure 4 is of the present utility model Figure 3 the enlarged view of A in;

[0021] Figure 5 is the schematic diagram after the upper die of the present utility model moves downward.

[0022] Reference numerals are:

[0023] 1. Upper die; 11. Upper die base; 12. Upper die core; 13. Press connecting seat;

[0024] 2. Lower die; 21. Lower die base; 22. Lower die core; 23. Lower die mounting plate;

[0025] 3. Positioning assembly; 31. Limiting rod base; 32. Fixed limiting rod; 33. Telescopic limiting rod; 34. Limiting seat; 35. Frustum-shaped limiting hole; 36. Spring; 37. Cylindrical through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Referring to the attached Figures 1-3 description, the present invention provides a hot forming positioning die for automotive parts, including an upper die 1 and a lower die 2. The lower die 2 is arranged at the bottom of the upper die 1. Among them, the upper die 1 includes an upper die base 11 and an upper die core 12. The upper die core 12 is installed at the middle position of the bottom of the upper die base 11. The lower die 2 includes a lower die base 21 and a lower die core 22. The lower die core 22 is installed at the middle position of the top of the lower die base 21. The lower die core 22 is located directly below the upper die core 12. When the present invention is in use, the upper die 1 and the lower die 2 need to be installed on the punch head and the processing table of a stamping machine respectively. As Figures 1-3 shown in FIGS. 4 and 5, a stamping machine connecting seat 13 for connecting the punch head of the stamping machine is fixed at the middle of the top of the upper die base 11. A lower die mounting plate 23 is fixedly arranged at the bottom of the lower die base 21. The lower die mounting plate 23 is installed on the processing table of the stamping machine through bolts. Place the thermoplastic material after heating, which is used to manufacture automotive parts, on the top of the lower die core 22. Then, drive the upper die base 11 and the upper die core 12 to move downward by the punch head of the stamping machine, so that the upper die core 12 and the lower die core 22 can extrude the material in the middle. As Figure 5 shown in FIG. 6, then, after the upper die core 12 moves upward and the material on the lower die core 22 cools, an automotive part with a specific shape can be obtained.

[0028] Because after the upper die 1 and the lower die 2 are used multiple times, the position of the lower die 2 will inevitably shift. Therefore, in order to ensure the quality of the manufactured finished automotive parts, as Figure 1 shown in FIG. 7, a positioning component 3 for aligning the upper die 1 and the lower die 2 is arranged between the upper die 1 and the lower die 2;

[0029] Specifically, as Figures 2-4 shown in FIG. 8, the positioning component 3 includes four limit seats 34. The four limit seats 34 are respectively installed at the four corners of the upper die 1. As Figure 2As shown in the figure, the four limit seats 34 are respectively fixedly embedded at the four corners of the upper die base 11. A frustum-shaped limit hole 35 and a cylindrical through hole 37 which are communicated with each other are formed inside the limit seat 34. The cylindrical through hole 37 is located at the top of the frustum-shaped limit hole 35. The opening at the bottom of the frustum-shaped limit hole 35 is larger than the opening at the top end of the cylindrical through hole 37. A telescopic limit rod 33 is provided at the bottom of each limit seat 34. The top end of the telescopic limit rod 33 is processed into a spherical shape. The diameter of the opening at the bottom end of the frustum-shaped limit hole 35 is larger than the diameter of the telescopic limit rod 33.

[0030] A spring 36 is fixedly arranged inside the telescopic limit rod 33. The bottom end of the spring 36 is fixedly provided with a fixed limit rod 32. And as Figure 4 shown in the figure, cavities for accommodating the spring 36 are formed inside the four telescopic limit rods 33. The diameter of the cavity is consistent with the diameter of the fixed limit rod 32. In the present utility model, the numbers of the fixed limit rods 32 and the telescopic limit rods 33 are both set to four. The four fixed limit rods 32 and the telescopic limit rods 33 are respectively arranged at the four corners of the top of the lower die 2. The bottom ends of the four fixed limit rods 32 are fixedly provided with limit rod bases 31. The four limit rod bases 31 are respectively fixedly arranged at the four corners of the top of the lower die 2, that is, at the four corners of the top of the lower die base 21.

[0031] When the position of the upper die 1 is offset, compared with the defect that manual correction is required in the prior art, the present utility model can automatically align the offset upper die 1. During the stamping process, the present utility model drives the limit seat 34 to move downward synchronously by the continuous downward movement of the offset upper die 1. Since the position of the upper die 1 is offset at this time, the center of the limit seat 34 will no longer be aligned with the central axis of the bottom telescopic limit rod 33. Therefore, during the downward movement of the limit seat 34, the top end of the telescopic limit rod 33 will first contact the inner wall of the frustum-shaped limit hole 35, and then as the limit seat 34 continues to move downward, it will squeeze the telescopic limit rod 33 and the spring 36 downward, so that the telescopic limit rod 33 can exert a reverse force on the side wall of the frustum-shaped limit hole 35, thereby driving the upper die 1 to move in the direction opposite to the offset until the top end of the telescopic limit rod 33 is aligned with the center of the limit seat 34. At this time, the upper die 1 and the lower die 2 will be aligned synchronously. This process does not require manual adjustment and can save the operation intensity of the staff.

[0032] Moreover, the opening at the bottom end of the frustum-shaped limit hole 35 in the present utility model is much larger than the diameter of the telescopic limit rod 33, and can correct and align the offset within a distance less than or equal to the radius of the bottom end of the frustum-shaped limit hole 35. Compared with the prior art, the adjustment range of the present utility model is larger, the positioning and alignment effect is better, and it can better meet the use requirements in the actual production of automobile parts.

[0033] Finally, the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hot forming positioning mold for automobile parts, comprising an upper mold (1) and a lower mold (2), wherein the lower mold (2) is arranged at the bottom of the upper mold (1), and is characterized in that: A positioning component (3) for aligning the upper mold (1) and the lower mold (2) is provided between the upper mold (1) and the lower mold (2); The positioning assembly (3) comprises four limiting seats (34), the four limiting seats (34) are respectively mounted on the four corners of the upper mold (1), the limiting seats (34) are provided with interconnected truncated cone limiting holes (35) and cylindrical through holes (37), the cylindrical through holes (37) are located at the top of the truncated cone limiting holes (35), the opening at the bottom of the truncated cone limiting holes (35) is larger than the opening at the top of the cylindrical through holes (37), the bottom of each limiting seat (34) is provided with a telescopic limiting rod (33), the top of the telescopic limiting rod (33) is processed into a spherical shape, and the diameter of the bottom opening of the truncated cone limiting holes (35) is larger than the diameter of the telescopic limiting rod (33); A spring (36) is fixed inside the telescopic limit rod (33), and a fixed limit rod (32) is fixed at the bottom end of the spring (36). The number of the fixed limit rod (32) and the telescopic limit rod (33) is set to four, and the four fixed limit rods (32) and telescopic limit rods (33) are respectively arranged on the four corners of the top of the lower mold (2).

2. The automotive component hot forming positioning mold according to claim 1, characterized in that: The bottom ends of the four fixed limiting rods (32) are all fixed with limiting rod bases (31), and the four limiting rod bases (31) are respectively fixed on the four corners of the top of the lower mold (2).

3. The automotive component hot forming positioning mold according to claim 1, characterized in that: Each of the four telescopic limiting rods (33) is provided with a cavity for accommodating a spring (36), and the diameter of the cavity is consistent with the diameter of the fixed limiting rod (32).

4. The automotive component hot forming positioning mold according to claim 2, characterized in that: The upper mold (1) comprises an upper mold base (11) and an upper mold core (12); the upper mold core (12) is installed at the middle position of the bottom of the upper mold base (11); and the four limit seats (34) are respectively fixedly embedded in the four corners of the upper mold base (11).

5. The automotive component hot forming positioning mold according to claim 4, characterized in that: A punching machine connecting seat (13) for connecting to a punching head of a punching machine is fixed in the middle of the top of the upper die seat (11).

6. The automotive component hot forming positioning mold according to claim 4, characterized in that: The lower mold (2) comprises a lower mold base (21) and a lower mold core (22), wherein the lower mold core (22) is installed at the middle position of the top of the lower mold base (21), and the lower mold core (22) is located directly below the upper mold core (12). The four limit rod bases (31) are respectively fixed on the four corners of the top of the lower mold base (21).

7. The automotive component hot forming positioning mold according to claim 6, characterized in that: A lower die mounting plate (23) is fixedly provided at the bottom of the lower die seat (21), and the lower die mounting plate (23) is mounted on a processing table of a punching machine by means of bolts.

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