Special equipment for cryogenic stress relief of automobile structure forming die

Abstract

The utility model discloses a special equipment of automobile structural member forming die cryogenic stress relief, specifically relates to the technical field of cryogenic box, including base, is provided with the support filter assembly on the base, the support filter assembly includes the cryogenic box main part of setting in the base top, the inner chamber bottom of cryogenic box main part is provided with the support seat, and the top of support seat is provided with the supporting plate. The utility model discloses through setting up support filter assembly, the shunt bar of embedding on the supporting plate can evenly guide the cooling medium in the cryogenic box to the mould surface, forms the helical flow path, avoids the medium flow dead angle in traditional equipment, and the blade rotation in the limit groove of motor drive, forces to agitate the cooling medium, accelerates the heat exchange efficiency, makes the cryogenic treatment period shorten.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic chamber technology, and more specifically, to a special equipment for eliminating cryogenic stress in automotive structural component molding dies. Background Technology

[0002] Cryogenic stress relief equipment for automotive structural component forming dies is an industrial device used to perform cryogenic treatment on metal forming dies used in manufacturing automotive structural components (such as body frames, chassis components, and anti-collision beams) to eliminate or significantly reduce their internal residual stress. Metal dies generate internal residual stress during manufacturing processes (such as forging, machining, heat treatment, and welding) and during use (enduring huge impacts and cyclic loads). These stresses are one of the main causes of die deformation, cracking, dimensional instability, and premature failure. Cryogenic treatment, through precisely controlled cooling, holding, and heating processes, promotes beneficial transformations in the microstructure of the die material (usually tool steel or mold steel). This process can more evenly release or redistribute the residual stress within the material, significantly improving its dimensional stability, wear resistance, and fatigue resistance, thereby extending the die's life.

[0003] Among them, the patent with announcement number CN222250848U discloses a cryogenic box that facilitates material handling, including a box body, a box cover connected to the top of the box body, a first sliding groove opened on the inner walls of both sides of the box body, a guide rod installed in the first sliding groove, a bearing plate sliding on the guide rod through a guide block, and a driving support structure installed at the bottom of the box body for driving the bearing plate to move up and down. The driving support structure includes a driving mechanism and a support structure.

[0004] In use, this structure uses a lead screw motor to drive a coaxial bidirectional reciprocating lead screw to rotate, which in turn moves the moving support plate horizontally in opposite directions. The front and rear ends of the moving support plate drive the support arms to simultaneously support and lift the front and rear sides of the bearing plate. The two ends of the bearing plate move up and down along the guide rod through guide blocks, ensuring the stability of the lifting and lowering of the bearing plate and facilitating the placement or removal of molds on the bearing plate. However, when the mold is cryogenically cooled, impurities on the mold surface are easily detached inside the cryogenic chamber, making it impossible to filter the medium inside the cryogenic chamber. Furthermore, the medium does not flow easily inside the cryogenic chamber, resulting in poor stress relief. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a special equipment for deep cryogenic stress relief of automotive structural component molding dies, which aims to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a special equipment for eliminating deep cryogenic stress in automotive structural component molding dies, including a base, on which a supporting and filtering assembly is provided;

[0007] The supporting filter assembly includes a cryogenic chamber body disposed on top of the base. A support is disposed at the bottom of the inner cavity of the cryogenic chamber body. A support plate is disposed on the top of the support. A flow divider is embedded in the support plate. A guide strip is disposed on one side of the surface of the flow divider. A filter element is disposed at the bottom of the support plate. A limiting groove is formed on the upper surface of the support. Two blades are embedded in the bottom of the inner wall of the limiting groove. A slot is formed at the bottom of the support. The bottom of the support extends into the limiting groove. The filter element is located in the slot and is slidably connected to the slot.

[0008] Optionally, in a possible implementation, two motors are bolted to the bottom of the base, and the output end of each motor extends to a corresponding blade. A cover plate is provided on the top of the cryogenic chamber body, and a sliding plate is provided on one side of the cover plate. The sliding plate is located at the top of the cryogenic chamber body and is slidably connected to the cryogenic chamber body. A hydraulic rod is provided on the top of the cover plate, and the output end of the hydraulic rod passes through the cover plate and extends to the support plate.

[0009] The technical effects and advantages of this utility model are as follows:

[0010] By setting up a support filter assembly and a flow divider embedded in the tray, the cooling medium in the cryogenic chamber can be evenly guided to the mold surface, forming a spiral flow path and avoiding dead zones in the medium flow in traditional equipment.

[0011] The motor drives the blades in the limiting groove to rotate, forcibly agitating the cooling medium, accelerating the heat exchange efficiency, and shortening the cryogenic treatment cycle.

[0012] Furthermore, the filter element at the bottom of the tray can effectively intercept impurities such as oxide scale and oil stains that fall off the mold surface, avoiding the reduction of the deep cooling effect caused by media contamination. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0014] Figure 1 This is a front view of the overall structure of this utility model.

[0015] Figure 2 This is a diagram showing the assembly of the main body, tray, flow guide strip, and base of the cryogenic chamber of this utility model.

[0016] Figure 3This is a side view of the filter element, support, tray, and diversion bar of this utility model.

[0017] Figure 4 This is a schematic diagram of the tray, diversion bar, and guide strip of this utility model.

[0018] Figure 5 This is a schematic diagram of the support and blade of this utility model.

[0019] The attached diagram is labeled as follows: 1. Base; 2. Cryogenic chamber body; 3. Support; 4. Pallet; 5. Diverter; 6. Guide bar; 7. Limiting groove; 8. Blade; 9. Slot; 10. Filter element; 11. Motor; 12. Cover plate; 13. Slide plate; 14. Hydraulic rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] As attached Figures 1-5 The automotive structural component molding die deep cryogenic stress relief equipment shown uses a support and filter assembly on the base 1 and a flow divider 5 embedded in the tray to evenly guide the cooling medium in the deep cryogenic chamber to the mold surface, forming a spiral flow path. This avoids dead zones in the medium flow in traditional equipment. The motor 11 drives the blades 8 in the limiting groove 7 to rotate, forcibly agitating the cooling medium, accelerating the heat exchange efficiency, and shortening the deep cryogenic treatment cycle. The specific structural settings of the components are as follows.

[0022] The supporting filter assembly includes a cryogenic chamber body 2 set on top of the base 1. A support 3 is set at the bottom of the inner cavity of the cryogenic chamber body 2. A support plate 4 is set on the top of the support 3. A diversion bar 5 is embedded in the support plate 4. A guide strip 6 is set on one side of the surface of the diversion bar 5. A filter element 10 is set at the bottom of the support plate 4. A limiting groove 7 is opened on the upper surface of the support 3. Two blades 8 are embedded in the bottom of the inner wall of the limiting groove 7. A slot 9 is opened at the bottom of the support 3. The bottom of the support 3 extends into the limiting groove 7. The filter element 10 is located in the slot 9 and is slidably connected to the slot 9.

[0023] Specifically, as shown in the attached document Figure 2 , 3 As shown in Figures 4 and 5, the workpiece is placed on the flow divider 5, and the tool is lifted by the pallet 4 and the flow divider 5. The filter element 10 facilitates the filtration of the cooling medium in the cryogenic chamber body 2, so that when the workpiece is cryogenically cooled in the cryogenic chamber body 2, the surface impurities are filtered into the filter element 10.

[0024] Two motors 11 are bolted to the bottom of the base 1, and the output end of each motor 11 extends to the corresponding blade 8. A cover plate 12 is provided on the top of the cryogenic chamber body 2. A sliding plate 13 is provided on one side of the cover plate 12. The sliding plate 13 is located at the top of the cryogenic chamber body 2 and is slidably connected to the cryogenic chamber body 2. A hydraulic rod 14 is provided on the top of the cover plate 12. The output end of the hydraulic rod 14 passes through the cover plate 12 and extends to the support plate 4.

[0025] Specifically, as shown in the attached document Figure 1 , 2 As shown in Figure 3, when the workpiece is cryogenically cooled in the cryogenic chamber body 2, the motor 11 is started and the motor 11 drives the blade 8 to rotate. When the blade 8 rotates, it stirs the cooling medium in the cryogenic chamber body 2, which facilitates the rapid flow of the cooling medium on the specific surface of the workpiece, improving the cryogenic efficiency and quality. Furthermore, the hydraulic rod 14 is set so that the hydraulic rod 14 can drive the support plate 4 to move the workpiece up and down, making it easy to remove the workpiece.

[0026] The specific working principle is as follows: slide open the slide plate 13, lower the tray 4 to the bottom of the cryogenic chamber body 2 through the hydraulic rod 14, place the mold on the diversion bar 5, slowly raise the hydraulic rod 14 to the set height to ensure that the mold is completely immersed in the cooling medium, close the slide plate 13, and form a sealed cryogenic space through the sealing strip;

[0027] Motor 11 drives blade 8 to rotate at a speed, causing the medium to form a clockwise vortex along the flow divider 5, thereby achieving uniform heat exchange efficiency on the mold surface.

[0028] Impurities that fall off the mold surface sink with the flow of the medium and are intercepted by the filter element 10 at the bottom of the tray 4, so as to avoid the impurities from adhering to the mold and affecting the stress relief effect. After the cryogenic treatment is completed, the hydraulic rod 14 raises the tray 4 to the box opening position, slides open the slide plate 13, and the mold is taken out manually or by a robotic arm.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special equipment for eliminating deep cryogenic stress in automotive structural component molding dies, comprising a base (1), characterized in that: The base (1) is provided with a filter support assembly; The supporting filter assembly includes a cryogenic chamber body (2) set on the top of the base (1), a support (3) is provided at the bottom of the inner cavity of the cryogenic chamber body (2), a support plate (4) is provided on the top of the support (3), a diversion bar (5) is embedded on the support plate (4), a guide strip (6) is provided on one side of the surface of the diversion bar (5), and a filter element (10) is provided at the bottom of the support plate (4).

2. The special equipment for deep cryogenic stress relief of automotive structural component forming molds according to claim 1, characterized in that: The upper surface of the support (3) is provided with a limiting groove (7), and two blades (8) are embedded in the bottom of the inner wall of the limiting groove (7). The bottom of the support (3) is provided with a slot (9).

3. The special equipment for deep cryogenic stress relief of automotive structural component forming molds according to claim 2, characterized in that: The bottom of the support (3) extends into the limiting groove (7), and the filter element (10) is located in the slot (9) and is slidably connected to the slot (9).

4. The special equipment for deep cryogenic stress relief of automotive structural component forming molds according to claim 2, characterized in that: Two motors (11) are bolted to the bottom of the base (1), and the output end of each motor (11) extends to the corresponding blade (8).

5. The special equipment for deep cryogenic stress relief of automotive structural component forming molds according to claim 1, characterized in that: The top of the cryogenic chamber body (2) is provided with a cover plate (12), and a sliding plate (13) is provided on one side of the cover plate (12). The sliding plate (13) is located at the top of the cryogenic chamber body (2) and is slidably connected to the cryogenic chamber body (2).

6. The special equipment for eliminating deep cryogenic stress in automotive structural component molding dies according to claim 5, characterized in that: A hydraulic rod (14) is provided on the top of the cover plate (12), and the output end of the hydraulic rod (14) passes through the cover plate (12) and extends to the support plate (4).

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