Precise die-casting die for high-precision automobile power steering shell

Abstract

The invention relates to the technical field of automobile metal die-casting, in particular to a high-precision automobile power steering shell precise die-casting die which comprises a movable die mounting base, a restraining and maintaining assembly and a guiding treatment assembly, an assembling area is formed in one side of the movable die mounting base, and a die-casting movable die is arranged in the assembling area through an assembling and adjusting assembly; the assembling and adjusting assembly comprises an assembling base and two adjusting frames, each adjusting frame comprises two attaching plates with the same size, the die-casting movable die and the movable die mounting base are rapidly assembled through the assembling base, later replacement and maintenance convenience of the die-casting die of the automobile power steering shell is achieved, and then the die-casting movable die and the die-casting movable die mounting base are assembled through the two adjusting frames of the assembling and adjusting assembly. The position relation of the movable die-casting die can be rapidly adjusted, when the movable die-casting die and a fixed die of a die-casting machine are misaligned, adjustment can be conducted in time, the high precision of die-casting forming is improved, and meanwhile under the linkage cooperation effect of the guide processing assembly, die assembly of the movable die-casting die can be smooth and stable, precision is reliable, and operation is free of worry and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive metal die casting, and specifically to a precision die casting mold for a high-precision automotive power steering housing. Background Art

[0002] The automotive power steering housing is a housing component in the automotive power steering system that is used to accommodate and protect internal components, and undertake functions such as force transmission, distribution, and formation of hydraulic chambers. It is usually made of materials such as cast iron and aluminum alloy, and has certain strength, stiffness, and sealing performance. It is an important part to ensure the normal operation of the automotive power steering system. When the automotive power steering housing is produced, it is mainly formed by die casting through a die casting mold.

[0003] The utility model with the publication number CN216460771U discloses an aluminum cold die casting machine for forming an automotive engine housing. By setting the smoke removal device in two groups, when the die is opened, the air hood of the smoke removal device can collect waste smoke from both sides of the die. The above scheme realizes the convenient use of the smoke removal equipment through the cooperation between various mechanisms. Since the moving die of the die casting machine needs to be reciprocated along the die clamping guide post by a hydraulic pushing device during use, during the die casting process of the automotive power steering housing, with long-term use, it is easy to have a die clamping deviation between the moving die and the fixed die. At this time, it is not convenient to adjust the relative position between the two, and when the moving die is disassembled and maintained, the die clamping guide post usually needs to be disassembled synchronously, which is time-consuming and laborious and inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a precision die casting mold for a high-precision automotive power steering housing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A precision die casting mold for a high-precision automotive power steering housing, comprising:

[0006] A moving die mounting seat, on one side of which there is an assembly area, and a die casting moving die is provided through an assembly adjustment component inside the assembly area. The assembly adjustment component includes an assembly seat and two adjustment frames, and each adjustment frame includes two equal-sized fitting plates;

[0007] A constraint and holding component, which is provided on three sides of the moving die mounting seat. The constraint and holding component includes three auxiliary screws, and one end of each of the three auxiliary screws abuts against the equal-sized fitting plate;

[0008] A guiding processing component, mold clamping bushings are symmetrically provided on four sides of the moving die mounting seat. The guiding processing component includes an oil storage tank and four oil delivery pipes, and both ends of the four oil delivery pipes are respectively communicated with the oil storage tank and the four mold clamping bushings.

[0009] Preferably, the assembly base is horizontally arranged at the center of the assembly area. A combined slot is formed on one side of the die-casting moving die, and the combined slot is inserted into the die-casting moving die. Linkage rods are fixedly connected between the two equal-sized fitting plates of the adjustment frame. The two equal-sized fitting plates of the adjustment frame are respectively located on both sides in opposite directions of the assembly base. The linkage rods of the adjustment frame penetrate through the assembly base movably, and the linkage rods of the two adjustment frames are arranged in a mutually staggered manner.

[0010] Preferably, one side of each of the four equal-sized fitting plates is in contact with the inner side wall of the combined slot. The length of the equal-sized fitting plate is less than the length of the inner side wall of the combined slot, and the length of the linkage rod is greater than the width of the assembly base.

[0011] Preferably, adjustment support rods are provided on one side of each of the two equal-sized fitting plates of one of the two adjustment frames, and guide blocks are provided on one side of each of the other equal-sized fitting plates of the adjustment frame. The guide blocks are movably inserted into the side wall of the assembly base. Adjustment cylinder grooves are formed on one side of the assembly base close to the adjustment support rods, and the adjustment support rods are inserted into the adjustment cylinder grooves through sealing rings and are provided with adjustment pistons.

[0012] Preferably, valve grooves are respectively formed on both sides inside the assembly base. First pairs of interfaces are respectively communicated with the two adjustment cylinder grooves in one of the valve grooves, and second pairs of interfaces are respectively communicated with the two adjustment cylinder grooves in the other valve groove. The second pairs of interfaces and the first pairs of interfaces are respectively located on both sides inside the adjustment cylinder grooves, and the adjustment pistons are located between the first pairs of interfaces and the second pairs of interfaces.

[0013] Preferably, a first switching valve and a second switching valve are respectively provided in the two valve grooves. L-shaped transfer grooves are formed through the first switching valve and the second switching valve, and one ends of the L-shaped transfer grooves of the first switching valve and the second switching valve are respectively arranged corresponding to the first pairs of interfaces and the second pairs of interfaces.

[0014] Preferably, auxiliary screw grooves are respectively communicated with the combined slot on three sides of the die-casting moving die. One ends of three auxiliary screws are inserted into the auxiliary screw grooves through threads. One ends of the three auxiliary screws inserted into the auxiliary screw grooves respectively penetrate through the auxiliary screw grooves and abut against one side of the three equal-sized fitting plates. Bar-shaped sliding grooves are respectively formed on one side of the moving die mounting base where the auxiliary screws are located, and the auxiliary screws respectively penetrate through the bar-shaped sliding grooves through gaskets.

[0015] Preferably, access grooves are respectively formed through the moving die mounting base in the two valve grooves inside the assembly base. The two access grooves are respectively communicated with the L-shaped transfer grooves of the first switching valve and the second switching valve, and first adjustment interfaces and second adjustment interfaces are respectively arranged on one side of the moving die mounting base where the two access grooves are located.

[0016] Preferably, the oil storage tank is arranged above the moving die mounting seat near the first adjustment interface. A first docking pipe is vertically arranged in the oil storage tank, and the lower end of the first docking pipe extends out of the oil storage tank. The upper end of the first adjustment interface is vertically communicated with a second docking pipe, and the upper end of the second docking pipe is hermetically inserted into the first docking pipe. A synchronous piston rod is vertically and movably inserted into the second docking pipe through a guiding partition plate. A first piston and a second piston are respectively arranged at the upper and lower ends of the second piston. A return piston is sleeved on the synchronous piston rod between the guiding partition plate and the second piston.

[0017] Preferably, sliding balls are arranged in all four die closing guide sleeves. One-way valves are arranged at one ends of the four oil delivery pipes communicated with the oil storage tank. The positions where the oil delivery pipes are communicated with the oil storage tank are located at the lower side of the oil storage tank. The upper end of the first docking pipe is above the oil liquid level in the oil storage tank. A die closing control connecting frame is arranged on one side of the moving die mounting seat away from the die casting moving die.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This device quickly assembles the die casting moving die and the moving die mounting seat through the assembly seat, realizing the convenience of later replacement and maintenance of the die casting die for the automotive power steering housing. Then, through the two adjustment frames of the assembly adjustment component, the positional relationship of the die casting moving die can be quickly adjusted. When the die casting moving die is misaligned with the fixed die of the die casting machine, timely adjustment can be carried out to improve the high precision of die casting forming. At the same time, under the linkage cooperation of the guiding processing component, the die closing of the die casting moving die can be smooth and stable, with reliable precision and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the first perspective of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the second perspective of the structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of part A;

[0023] Figure 4 It is a schematic diagram of the side sectional structure of the connection between the assembly seat and the die casting moving die of the present invention;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of part B;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of part C;

[0026] Figure 7 It is a combined schematic diagram of the oil storage tank and the first adjustment interface of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of part D;

[0028] Figure 9 Schematic diagram of the structural disassembly of the present invention;

[0029] Figure 10 Schematic diagram of the structures of two adjusting frames of the present invention.

[0030] In the figure: moving die mounting base 1, die closing guide sleeve 2, assembly base 3, die-casting moving die 4, combined slot 5, equal-size fitting plate 6, linkage rod 7, adjusting support rod 8, adjusting cylinder groove 9, adjusting piston 10, first switching valve 11, second switching valve 12, first docking port 13, second docking port 14, auxiliary screw groove 15, auxiliary screw 16, strip-shaped sliding groove 17, first adjusting port 18, second adjusting port 19, oil storage tank 20, first connecting pipe 21, second connecting pipe 22, synchronous piston rod 23, first piston 24, second piston 25, return piston 26, oil supply pipe 27, one-way valve 28, die closing control connecting frame 29, guiding block 30. Specific embodiments

[0031] 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.

[0032] Please refer to the attached Figures 1 - 10 , and the following technical solutions are provided in this application.

[0033] Embodiment 1: A precision die-casting mold for a high-precision automotive power steering housing, including a movable mold mounting base 1. An assembly area is provided on one side of the movable mold mounting base 1. A die-casting movable mold 4 is provided in the assembly area through an assembly adjustment component. The assembly adjustment component includes an assembly base 3 and two adjustment frames. Each adjustment frame includes two equal-sized fitting plates 6. The assembly base 3 is horizontally arranged at the center of the assembly area. A combined slot 5 is provided on one side of the die-casting movable mold 4. The combined slot 5 is inserted into the die-casting movable mold 4. A linkage rod 7 is fixedly connected between the two equal-sized fitting plates 6 of each adjustment frame. The two equal-sized fitting plates 6 of each adjustment frame are respectively located on both sides of the assembly base 3 in opposite directions. The linkage rod 7 is movably inserted through the assembly base 3, and the linkage rods 7 of the two adjustment frames are arranged in a mutually offset manner. One side of the four equal-sized fitting plates 6 is respectively in contact with the inner side wall of the combined slot 5. The length of the equal-sized fitting plate 6 is less than the length of the inner side wall of the combined slot 5. The length of the linkage rod 7 is greater than the width of the assembly base 3. One side of one of the equal-sized fitting plates 6 of each adjustment frame is provided with an adjustment support rod 8, and the other side of the other equal-sized fitting plate 6 of each adjustment frame is provided with a guide block 30. The guide block 30 is movably inserted into the side wall of the assembly base 3. An adjustment cylinder groove 9 is provided on one side of the assembly base 3 close to the adjustment support rod 8, and the adjustment support rod 8 is inserted into the adjustment cylinder groove 9 through a sealing ring and is provided with an adjustment piston 10. The movable mold mounting base 1 is slidably connected to the four die-casting guide columns of the die-casting machine through die-casting guide sleeves 2. The die-casting movable mold 4 is installed on one side of the movable mold mounting base 1 through the assembly base 3 in a quick-disassembly and adjustable manner. When assembling the die-casting movable mold 4 and the movable mold mounting base 1, the die-casting movable mold 4 is hoisted to the position of the assembly base 3 by a hoisting device, and then horizontally pushed into the assembly area of the movable mold mounting base 1. The assembly base 3 and the four equal-sized fitting plates 6 are inserted into the combined slot 5 of the die-casting movable mold 4. The four equal-sized fitting plates 6 are respectively in contact with the four side walls in the combined slot 5. At this time, the assembly base 3 and the equal-sized fitting plates 6 provide basic support for the die-casting movable mold 4. An installation cavity for the die-casting mold of the automotive power steering housing is provided on one side of the assembly base 3.

[0034] On both sides inside the assembly seat 3, valve grooves are respectively formed. In one of the valve grooves, two adjustment cylinder grooves 9 are respectively communicated, and a first pair of interfaces 13 are formed. In the other valve groove, two adjustment cylinder grooves 9 are respectively communicated, and a second pair of interfaces 14 are formed. The second pair of interfaces 14 and the first pair of interfaces 13 are respectively located on both sides inside the adjustment cylinder grooves 9, and the adjustment piston 10 is located between the first pair of interfaces 13 and the second pair of interfaces 14. A first switching valve 11 and a second switching valve 12 are respectively arranged in the two valve grooves. L-shaped transfer grooves are respectively formed through the first switching valve 11 and the second switching valve 12. One ends of the L-shaped transfer grooves of the first switching valve 11 and the second switching valve 12 are respectively arranged corresponding to the first pair of interfaces 13 and the second pair of interfaces 14. The hydraulic oil or high-pressure gas fed through the first switching valve 11 and the second switching valve 12 is used to separately push the two adjustment support rods 8, so that the two adjustment frames with two equal-size fitting plates 6 can slide relatively. At this time, the movement of the adjustment frames can drive the die-casting moving die 4 to be adjusted up, down, left and right in the assembly area of the moving die mounting seat 1, realize the relative position relationship between the die-casting moving die 4 and the die-casting machine fixed die, and realize the subsequent high-precision die-casting processing.

[0035] A constraint and retention component is arranged to maintain the connection state between the die-casting moving die 4 and the assembly seat 3. The constraint and retention component is arranged on three sides of the moving die mounting seat 1. The constraint and retention component includes three auxiliary screws 16. One ends of the three auxiliary screws 16 respectively abut against the equal-size fitting plates 6. Auxiliary screw grooves 15 are respectively formed through the combination slots 5 communicated with three sides of the die-casting moving die 4. One ends of the three auxiliary screws 16 are respectively inserted into the auxiliary screw grooves 15 through threads. One ends of the three auxiliary screws 16 inserted into the auxiliary screw grooves 15 respectively penetrate through the auxiliary screw grooves 15 and abut against one side of the three equal-size fitting plates 6. Strip-shaped sliding grooves 17 are respectively formed on one side of the moving die mounting seat 1 where the auxiliary screws 16 are located. The auxiliary screws 16 are respectively arranged through the strip-shaped sliding grooves 17 through gaskets. When the die-casting moving die 4 is adjusted up, down, left and right, one end of the auxiliary screw 16 is not in contact with the equal-size fitting plate 6. When the die-casting moving die 4 is adjusted, the three auxiliary screws 16 can move adaptively in the strip-shaped sliding grooves 17. During this period, under the constraint of the three auxiliary screws 16 and the strip-shaped sliding grooves 17, the die-casting moving die 4 cannot break away from the assembly seat 3. Then, after the auxiliary screws 16 are located behind the equal-size fitting plates 6, the connection between the auxiliary die-casting moving die 4 and the assembly seat 3 is stable. By arranging pads between the auxiliary screws 16 and the moving die mounting seat 1, the positional relationship between the auxiliary screws 16 and the moving die mounting seat 1 can also be stable.

[0036] Embodiment 2: On the basis of Embodiment 1, a guiding and processing component is provided to avoid the instability of the die-casting moving die 4 during the closing die sliding. Die guide sleeves 2 are symmetrically arranged on the four sides of the moving die mounting seat 1, and the guiding and processing component includes an oil storage tank 20 and four oil delivery pipes 27. The two ends of the four oil delivery pipes 27 are respectively communicated with the oil storage tank 20 and the four die guide sleeves 2. Two valve grooves in the assembly seat 3 respectively penetrate through the moving die mounting seat 1 to form access grooves, and the two access grooves are respectively communicated with the L-shaped transfer grooves of the first switching valve 11 and the second switching valve 12. And on one side of the moving die mounting seat 1 where the two access grooves are located, a first adjustment interface 18 and a second adjustment interface 19 are respectively provided. The first adjustment interface 18 and the second adjustment interface 19 respectively send power sources for supporting the die-casting moving die 4 or adjusting the die-casting moving die 4 to the first switching valve 11 and the second switching valve 12.

[0037] The oil storage tank 20 is arranged above the moving die mounting seat 1 near the first adjustment interface 18. A first docking pipe 21 is vertically arranged in the oil storage tank 20, and the lower end of the first docking pipe 21 extends out of the oil storage tank 20. The upper end of the first adjustment interface 18 is vertically communicated with a second docking pipe 22, and the upper end of the second docking pipe 22 is hermetically inserted into the first docking pipe 21. A synchronous piston rod 23 is vertically and movably inserted into the second docking pipe 22 through a guiding partition plate. A first piston 24 and a second piston 25 are respectively arranged at the upper and lower ends of the second piston 25. A return piston 26 is sleeved on the synchronous piston rod 23 between the guiding partition plate and the second piston 25. Sliding balls are arranged in all four die guide sleeves 2. One-way valves 28 are arranged at one ends of the four oil delivery pipes 27 communicated with the oil storage tank 20. The position where the oil delivery pipe 27 is communicated with the oil storage tank 20 is located at the lower side of the oil storage tank 20. The upper end of the first docking pipe 21 is above the oil liquid level in the oil storage tank 20. A die closing control connection frame 29 is arranged on one side of the moving die mounting seat 1 away from the die-casting moving die 4. After the die-casting moving die 4 is adjusted, in order to maintain the position stability of the die-casting moving die 4, at this time, the first switching valve 11 and the second switching valve 12 need to control the L-shaped transfer groove to be misaligned with the first pair of interfaces 13 and the second pair of interfaces 14. When hydraulic oil is continuously fed into the first adjustment interface 18 at this time, the hydraulic oil will not affect the stability of the die-casting moving die 4, but the hydraulic oil will enter the second docking pipe 22 and push the second piston 25 and the first piston 24 to rise. At this time, the air above in the first docking pipe 21 compresses the space in the oil storage tank 20, and the lubricating oil in the oil storage tank 20 is pushed to move the four one-way valves 28, and the lubricating oil is respectively lifted or dripped into the four die guide sleeves 2. By reciprocatingly starting and stopping the feeding of hydraulic oil to the first adjustment interface 18, the active control lubrication of the sliding balls can be realized. The one-way valve 28 is a common liquid spring self-sealing one-way valve.

[0038] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision die-casting mold for a high-precision automotive power steering housing, characterized in that, Including: A moving die mounting base (1), on one side of the moving die mounting base (1), an assembly area is provided, and a die-casting moving die (4) is provided therein through an assembly adjustment component. The assembly adjustment component includes an assembly base (3) and two adjustment frames, and each adjustment frame includes two equal-sized fitting plates (6); A constraint and holding component, the constraint and holding component is provided on three sides of the moving die mounting base (1), and the constraint and holding component includes three auxiliary screws (16), and one ends of the three auxiliary screws (16) are respectively abutted against the equal-sized fitting plates (6); A guiding processing component, mold closing bushings (2) are symmetrically provided on four sides of the moving die mounting base (1), and the guiding processing component includes an oil storage tank (20) and four oil supply pipes (27). Two ends of the four oil supply pipes (27) are respectively communicated with the oil storage tank (20) and the four mold closing bushings (2).

2. The precision die-casting mold for a high-precision automotive power steering housing according to claim 1, wherein: The assembly base (3) is horizontally arranged at the center of the assembly area. A combination slot (5) is provided on one side of the die-casting moving die (4), and the combination slot (5) is inserted into the die-casting moving die (4). Linking rods (7) are fixedly connected between the two equal-sized fitting plates (6) of the adjustment frame. The two equal-sized fitting plates (6) of the adjustment frame are respectively located on two opposite sides of the assembly base (3). The linking rod (7) is movably arranged through the assembly base (3), and the linking rods (7) of the two adjustment frames are arranged in a mutually staggered manner.

3. The precision die-casting mold for high-precision automotive power steering housing according to claim 2, wherein: One sides of the four equal-sized fitting plates (6) are respectively in contact with the inner side wall of the combination slot (5). The length of the equal-sized fitting plate (6) is less than the length of the inner side wall of the combination slot (5), and the length of the linking rod (7) is greater than the width of the assembly base (3).

4. The precision die-casting mold for high-precision automotive power steering housing according to claim 3, wherein: Adjustment support rods (8) are provided on one sides of one of the two equal-sized fitting plates (6) of the two adjustment frames, and guide blocks (30) are provided on one sides of the other equal-sized fitting plates (6) of the adjustment frame. The guide blocks (30) are movably inserted into the side wall of the assembly base (3). Adjustment cylinder grooves (9) are provided on one sides of the assembly base (3) close to the adjustment support rods (8), and the adjustment support rods (8) are inserted into the adjustment cylinder grooves (9) through sealing rings and are provided with adjustment pistons (10).

5. The precision die-casting mold for high-precision automotive power steering housing according to claim 4, characterized in that: Valve grooves are respectively provided on two sides inside the assembly base (3). First pair of interfaces (13) communicating with the two adjustment cylinder grooves (9) are respectively provided in one of the valve grooves, and second pair of interfaces (14) communicating with the two adjustment cylinder grooves (9) are respectively provided in the other valve groove. The second pair of interfaces (14) and the first pair of interfaces (13) are respectively located on two sides inside the adjustment cylinder grooves (9), and the adjustment pistons (10) are located between the first pair of interfaces (13) and the second pair of interfaces (14).

6. The precision die-casting mold for a high-precision automotive power steering housing according to claim 5, wherein: A first switching valve (11) and a second switching valve (12) are respectively provided in the two valve grooves. L-shaped transfer grooves are respectively provided through the first switching valve (11) and the second switching valve (12). One ends of the L-shaped transfer grooves of the first switching valve (11) and the second switching valve (12) are respectively arranged corresponding to the first pair of interfaces (13) and the second pair of interfaces (14).

7. The precision die-casting mold for a high-precision automotive power steering housing according to claim 6, characterized in that: On three sides of the movable die-casting mold (4), the combined slot (5) is communicated, and an auxiliary screw groove (15) is provided. One ends of three auxiliary screws (16) are inserted into the auxiliary screw groove (15) through threads. One ends of the three auxiliary screws (16) inserted into the auxiliary screw groove (15) respectively penetrate through the auxiliary screw groove (15) and abut against one side of three equal-sized fitting plates (6). On one side of the auxiliary screws (16), the movable die mounting seat (1) is provided with strip-shaped sliding grooves (17), and the auxiliary screws (16) are all arranged through the strip-shaped sliding grooves (17) through gaskets.

8. The precision die-casting mold for high-precision automotive power steering housing according to claim 7, wherein: Two valve grooves in the assembly seat (3) respectively penetrate through the movable die mounting seat (1) to form access grooves. The two access grooves are respectively communicated with the L-shaped transfer grooves of the first switching valve (11) and the second switching valve (12), and the movable die mounting seat (1) is provided with a first adjustment interface (18) and a second adjustment interface (19) on one side of the two access grooves respectively.

9. The precision die-casting mold for high-precision automotive power steering housing according to claim 8, characterized in that: The oil storage tank (20) is arranged above the movable die mounting seat (1) near the first adjustment interface (18). A first docking pipe (21) is vertically arranged in the oil storage tank (20). The lower end of the first docking pipe (21) extends out of the oil storage tank (20). The upper end of the first adjustment interface (18) is vertically communicated with a second docking pipe (22). The upper end of the second docking pipe (22) is hermetically inserted into the first docking pipe (21). A synchronous piston rod (23) is vertically and movably inserted into the second docking pipe (22) through a guiding partition plate. A first piston (24) and a second piston (25) are respectively arranged at the upper and lower ends of the second piston (25). A return piston (26) is sleeved on the synchronous piston rod (23) between the guiding partition plate and the second piston (25).

10. The precision die-casting mold for high-precision automotive power steering housing according to claim 9, characterized in that: Sliding balls are arranged in all four die closing bushings (2). One-way valves (28) are arranged at one ends of four oil delivery pipes (27) communicated with the oil storage tank (20). The position where the oil delivery pipes (27) are connected to the oil storage tank (20) is located on the lower side of the oil storage tank (20). The upper end of the first docking pipe (21) is above the oil level in the oil storage tank (20). A die closing control connection frame (29) is arranged on one side of the movable die mounting seat (1) away from the movable die-casting mold (4).

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