Low-stress die-casting die and die-casting method thereof

Abstract

The invention relates to the technical field of die-casting die production, in particular to a low-stress die-casting die and a die-casting method.The low-stress die-casting die comprises a working box, limiting columns are arranged on the two sides of the inner wall of the working box correspondingly, moving blocks are arranged on the outer walls of the limiting columns, buffer springs are wound around the outer walls of the limiting columns, and connecting rods are arranged on one sides of the moving blocks; an electric telescopic rod is arranged at the top of the inner wall of the working box, a limiting plate is arranged at the telescopic end of the electric telescopic rod, a cooler is arranged at the top of the limiting plate, a die-casting block is arranged at the bottom of the limiting plate, one end of a connecting rod is arranged on one side of the limiting plate, a bearing plate is arranged at the bottom of the inner wall of the working box, and a matched protective pad is arranged on the surface of the bearing plate; a warning indicator is arranged on the top of the inner wall of the working box, and the structural shapes of the limiting plate and the bearing plate are concave. The die-casting effect of the die is enhanced, the possibility that stress generated by the die is transmitted to a workpiece can be reduced, and therefore the defects such as cracks, air holes and surface unevenness caused by the stress are reduced.

Description

Technical Field

[0001] This invention relates to the field of die casting mold production technology, specifically a low-stress die casting mold and its die casting method. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to shape objects; this tool is composed of various parts, and different molds are composed of different parts. It primarily achieves the shaping of objects by changing the physical state of the material being molded.

[0003] A search revealed a Chinese patent with authorization number CN213469526U, which discloses a die-casting mold for reducing thermal stress. The mold includes a lower base, a lower forming cavity at the top center of the lower base, a telescopic groove at the bottom center of the lower forming cavity, a sliding plate slidably connected inside the telescopic groove, a top rod passing through the telescopic groove at the top center of the sliding plate, and a push rod passing through the telescopic groove at the bottom center of the sliding plate, with the push rod located inside a push groove in the lower base. A support spring is sleeved and fixed inside the telescopic groove on the top rod. An upper base is positioned directly above the lower base, and an upper forming mold for use with the lower forming cavity is snapped and fixed at the bottom center of the upper base.

[0004] The above document describes the following problems: heat is generated during the die casting process. Increased heat can damage the mold, thereby increasing the likelihood that the stress generated by the mold will be transferred to the workpiece, which in turn amplifies the defects caused by stress. The inability to reduce the stress generated by the device will shorten the service life of the mold and increase the frequency of mold maintenance and replacement.

[0005] To address this, a low-stress die-casting mold and its die-casting method are proposed. Summary of the Invention

[0006] In view of this, the present invention aims to provide a low-stress die-casting mold and a die-casting method thereof to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0007] The technical solution of this invention is implemented as follows: A low-stress die-casting mold includes a working box. Limiting posts are respectively provided on both sides of the inner wall of the working box. A moving block is provided on the outer wall of the limiting post. A buffer spring is wound around the outer wall of the limiting post. A connecting rod is provided on one side of the moving block. An electric telescopic rod is provided on the top of the inner wall of the working box. A limiting plate is provided at the telescopic end of the electric telescopic rod. A cooler is provided on the top of the limiting plate.

[0008] More preferably, the bottom of the limiting plate is provided with a die-cast block, one end of the connecting rod is provided on one side of the limiting plate, the bottom of the inner wall of the working box is provided with a bearing plate, the surface of the bearing plate is provided with a matching protective pad, and the top of the inner wall of the working box is provided with a warning device.

[0009] More preferably, the limiting plate and the bearing plate are both designed to be concave.

[0010] More preferably, the top of the support plate has grooves at both ends, and each of the two grooves has a control switch inside. The control switch is electrically connected to the cooler through a conductor.

[0011] More preferably, the bottom of the work box is welded with support columns at the four corners, and the bottom of each of the four support columns is provided with anti-slip pads, and the bottom of each of the four anti-slip pads is provided with anti-slip patterns.

[0012] More preferably, the bottom and top of the inner wall of the work box are respectively provided with fixing plates, one side of the fixing plate is welded to the inner wall of the work box, and the two ends of the limiting post are respectively provided on one side of the fixing plate.

[0013] In a further preferred embodiment, the surface of the work box is hinged with an inspection door, the surface of the inspection door is fitted with a matching viewing window, a control panel is installed on one side of the viewing window, the electric telescopic rod and the warning device are electrically connected to the control panel through conductive wires, a handle is welded to the bottom of the control panel, and the outer wall of the handle is provided with protective texture.

[0014] This invention provides a die-casting method for low-stress die-casting molds, comprising the following steps: S1. The user opens the access door and places the mold to be die-cast on the surface of the support plate. The protective pad provides protection for the surface of the automotive parts. S2. Close the maintenance door and start the electric telescopic rod. The electric telescopic rod drives the limit plate to descend. The moving blocks on both sides of the limit plate will squeeze the buffer springs wrapped around the surface of the limit post, which will provide a buffering effect on the pressure generated by the bearing plate and the cooler, and reduce the weight loss of the die-cast block. S3. As the limiting plate descends, the die-cast block will bend the car part with the support plate. Since the support plate has a concave shape, it will bend the two sides of the car part. S4. When the limit plate contacts the control switches on both sides of the top surface of the bearing plate, the cooler will be automatically activated. The cooler will transfer the generated heat to both sides of the automotive parts through the limit plate, thereby enhancing the die-casting effect, reducing the probability of springback after die-casting, and improving work safety. S5. After the die casting of the mold is completed, control the electric telescopic rod to rise. After the control switches on both sides of the limit plate move away from the top surface of the bearing plate, the cooler will be turned off, thus completing the die casting of the mold.

[0015] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions: 1. Place the car parts on the surface of the support plate. The protective pad provides protection for the surface of the car parts, reducing damage to the car parts. The moving blocks on both sides of the limiting plate will squeeze the buffer springs wrapped around the surface of the limiting post, providing a buffering effect on the pressure generated by the support plate and the cooler, reducing the stress on the workpiece during the die casting process, effectively reducing the risk of workpiece deformation, and ensuring the accuracy of product size and shape. 2. When the limit plate contacts the control switches on both sides of the top surface of the bearing plate, the cooler will be automatically activated. The cooler will transfer heat to both sides of the automotive parts through the limit plate, thereby enhancing the die-casting effect of the mold and reducing the possibility of stress generated by the mold being transferred to the workpiece, thus reducing defects caused by stress, such as cracks, pores and uneven surfaces.

[0016] Third, by reducing stress generation, low-stress die casting molds can extend the service life of the mold. Lower stress means less fatigue damage and wear, reducing the frequency of mold maintenance and replacement, and lowering the cost of mold use.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the external structure of a low-stress die-casting mold proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of a low-stress die-casting mold proposed in this invention; Figure 3 This is a perspective view of a component of a low-stress die-casting mold proposed in this invention; Figure 4 This is the present invention. Figure 2 A magnified view of Figure A in the middle.

[0020] As shown in the figure: 1. Working box; 2. Fixed plate; 3. Limiting post; 4. Buffer spring; 5. Moving block; 6. Connecting rod; 7. Limiting plate; 8. Die-casting block; 9. Electric telescopic rod; 10. Cooler; 11. Warning device; 12. Bearing plate; 13. Protective pad; 14. Groove; 15. Control switch; 16. Support column; 17. Anti-slip pad; 18. Inspection door; 19. Control panel; 20. Viewing window; 21. Handle. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, this embodiment of the invention provides a low-stress die-casting mold, including a working box 1. Limiting posts 3 are respectively provided on both sides of the inner wall of the working box 1. A moving block 5 is provided on the outer wall of the limiting post 3. A buffer spring 4 is wound around the outer wall of the limiting post 3. A connecting rod 6 is provided on one side of the moving block 5. An electric telescopic rod 9 is provided on the top of the inner wall of the working box 1. A limiting plate 7 is provided at the telescopic end of the electric telescopic rod 9. A cooler 10 is provided on the top of the limiting plate 7.

[0024] In one embodiment, the bottom of the limiting plate 7 is provided with a die-cast block 8, one end of the connecting rod 6 is provided on one side of the limiting plate 7, the bottom of the inner wall of the working box 1 is provided with a bearing plate 12, the surface of the bearing plate 12 is provided with a matching protective pad 13, and the top of the inner wall of the working box 1 is provided with a warning device 11.

[0025] In one embodiment, both the limiting plate 7 and the bearing plate 12 are configured to be concave.

[0026] In one embodiment, grooves 14 are respectively provided at both ends of the top of the support plate 12, and control switches 15 are provided inside the two grooves 14. The control switches 15 are electrically connected to the cooler 10 through conductive lines.

[0027] In one embodiment, support columns 16 are welded to the four corners of the bottom surface of the work box 1, and anti-slip pads 17 are provided at the bottom of the four support columns 16, and anti-slip patterns are provided at the bottom of the four anti-slip pads 17.

[0028] In one embodiment, the bottom and top of the inner wall of the working box 1 are respectively provided with fixing plates 2, one side of the fixing plate 2 is welded to the inner wall of the working box 1, and the two ends of the limiting post 3 are respectively provided on one side of the fixing plate 2.

[0029] In one embodiment, an inspection door 18 is hinged to the surface of the work box 1, and a matching viewing window 20 is installed on the surface of the inspection door 18. A control panel 19 is installed on one side of the viewing window 20. The electric telescopic rod 9 and the warning device 11 are electrically connected to the control panel 19 through conductive lines. A handle 21 is welded to the bottom of the control panel 19, and the outer wall of the handle 21 is provided with protective texture. The electric telescopic rod 9 and the warning device 11 used in this device are both mature existing technologies, and the working principles of the electric telescopic rod 9 and the warning device 11 are well known to those skilled in the art, and will not be described in detail here.

[0030] This invention provides a die-casting method for low-stress die-casting molds, comprising the following steps: S1. The user opens the access door 18 and places the mold to be die-cast on the surface of the support plate 12. The protective pad 13 provides protection for the surface of the automotive parts. S2. Close the maintenance door 18 and start the electric telescopic rod 9. The electric telescopic rod 9 drives the limit plate 7 to descend. The moving blocks 5 on both sides of the limit plate 7 will squeeze the buffer spring 4 wrapped around the surface of the limit post 3, which will provide a buffering effect on the pressure generated by the bearing plate 12 and the cooler 10, and reduce the weight loss of the die-cast block 8. S3. As the limiting plate 7 descends, the die-casting block 8 will bend the car parts together with the support plate 12. Since the support plate 12 has a concave shape, it will bend the two sides of the car parts. S4. When the limiting plate 7 contacts the control switches 15 on both sides of the top surface of the bearing plate 12, the cooler 10 will be automatically activated. The cooler 10 will transfer the generated heat to both sides of the automotive parts through the limiting plate 7, thereby enhancing the die-casting effect, reducing the probability of springback after die-casting, and improving work safety. S5. After the die casting of the mold is completed, the electric telescopic rod 9 is raised and the limit plate 7 moves away from the control switches 15 on both sides of the top surface of the bearing plate 12. Then the cooler 10 is turned off, thus completing the die casting of the mold.

[0031] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A low-stress die-casting mould comprising a working tank (1), characterised in that: The inner wall of the work box (1) is provided with limiting posts (3) on both sides. The outer wall of the limiting post (3) is provided with a moving block (5). The outer wall of the limiting post (3) is surrounded by a buffer spring (4). The moving block (5) is provided with a connecting rod (6) on one side. The top of the inner wall of the work box (1) is provided with an electric telescopic rod (9). The telescopic end of the electric telescopic rod (9) is provided with a limiting plate (7). The top of the limiting plate (7) is provided with a cooler (10). The bottom of the limiting plate (7) is provided with a die-casting block (8). One end of the connecting rod (6) is located on one side of the limiting plate (7). The bottom of the inner wall of the work box (1) is provided with a bearing plate (12). The surface of the bearing plate (12) is provided with a matching protective pad (13). The top of the inner wall of the work box (1) is provided with a warning device (11).

2. The low-stress die-casting mold according to claim 1, characterized in that: The limiting plate (7) and the bearing plate (12) are both designed to be concave.

3. The low-stress die-casting mold according to claim 1, characterized in that: The top of the support plate (12) has grooves (14) at both ends, and each of the two grooves (14) has a control switch (15) inside. The control switch (15) is electrically connected to the cooler (10) through a conductor.

4. The low-stress die-casting mold according to claim 1, characterized in that: The bottom of the work box (1) is welded with support columns (16) at the four corners. The bottom of each of the four support columns (16) is provided with anti-slip pads (17), and the bottom of each of the four anti-slip pads (17) is provided with anti-slip patterns.

5. A low-stress die-casting mold according to claim 1, characterized in that: The bottom and top of the inner wall of the work box (1) are respectively provided with fixing plates (2), one side of the fixing plate (2) is welded to the inner wall of the work box (1), and the two ends of the limiting column (3) are respectively provided on one side of the fixing plate (2).

6. A low-stress die-casting mold according to claim 1, characterized in that: The surface of the work box (1) is hinged with an inspection door (18), and the surface of the inspection door (18) is fitted with a viewing window (20). A control panel (19) is installed on one side of the viewing window (20). The electric telescopic rod (9) and the warning device (11) are electrically connected to the control panel (19) through conductive lines. A handle (21) is welded to the bottom of the control panel (19), and the outer wall of the handle (21) is provided with protective texture.

7. A die-casting method for a low-stress die-casting mold according to any one of claims 1-6, characterized in that, Includes the following steps: S1. The user opens the inspection door (18) and places the mold to be die-cast on the surface of the support plate (12); S2. Close the maintenance door (18), start the electric telescopic rod (9), the electric telescopic rod (9) drives the limit plate (7) to descend, the moving blocks (5) on both sides of the limit plate (7) will squeeze the buffer spring (4) wrapped around the surface of the limit post (3). S3. As the limiting plate (7) descends, the die-cast block (8) will bend the automotive parts against the bearing plate (12); S4. When the limiting plate (7) contacts the control switches (15) on both sides of the top surface of the bearing plate (12), the cooler (10) will be automatically started. The cooler (10) will transfer the generated heat to both sides of the automotive parts through the limiting plate (7). S5. After the die casting of the mold is completed, control the electric telescopic rod (9) to rise, and after the limit plate (7) moves away from the control switches (15) on both sides of the top surface of the bearing plate (12), the cooler (10) is closed, thus completing the die casting of the mold.

Images