Quick disassembly and assembly core-pulling structure of double-gear steering gear die-casting die

Abstract

The utility model discloses a double-gear steering gear die-casting die quick disassembly and assembly loose core structure which comprises a fixing sleeve, an oil cylinder is fixedly installed at one end of the fixing sleeve, a connecting rod is fixedly arranged at the end of a piston rod of the oil cylinder, meanwhile, the connecting rod is movably arranged in the fixing sleeve, and a loose core is fixedly installed at the end, away from the oil cylinder, of the connecting rod. The loose core is matched with the loose core sleeve in size, the loose core is inserted into the loose core sleeve in a penetrating mode, a dismounting base is fixedly arranged at the end of the loose core sleeve, and an internal thread structure is arranged on the surface of the inner wall of the dismounting base. According to the quick disassembly and assembly core-pulling structure for the double-gear steering gear die-casting die, when the condition of core-pulling breakage occurs, the oil cylinder is disassembled firstly, and the oil cylinder drives the connecting rod to take out the core-pulling; the thread at the end of the lengthening rod is in threaded connection with the interior of the dismounting base at the end of the core-pulling sleeve, the lengthening rod is pulled outwards, and therefore the core-pulling sleeve is taken out, and the damaged core-pulling sleeve and the damaged core-pulling sleeve can be rapidly replaced.

Description

Technical Field

[0001] The utility model relates to the field of die-casting dies, in particular to a quick disassembly and assembly core-pulling structure of a die-casting die for a double-gear steering gear. Background Art

[0002] The working principle of the dual-gear steering gear die-casting mold is to inject molten metal into the mold cavity at high speed and high pressure through the die-casting machine's injection system. After cooling and solidification, the required dual-gear steering gear die-casting is obtained. During the die-casting process, the mold's temperature control system will heat or cool the mold to ensure the fluidity and solidification of the molten metal in the mold. At the same time, the mold's overflow system will discharge gas and impurities in the mold to ensure the quality of the die-casting. After the die-casting is completed, the mold will use the core pulling mechanism to push the die-casting out of the mold cavity, completing a die-casting cycle.

[0003] In summary: Die-casting molds are key tools for die-casting. Whether the die-casting mold is not prone to failure, whether the continuity is reliable, and whether the spare parts can be quickly replaced if there is a problem can become a breakthrough point for reducing costs and increasing efficiency.

[0004] When aluminum alloy products are processed through die-casting molds, threaded holes, bracket holes and thick-walled areas in the aluminum alloy products require the addition of extrusion pin structures on the molds. When the die-casting molds are actually used, they are prone to broken extrusion pins and core pulls. When repairing, the molds need to be disassembled and assembled, and it is impossible to quickly disassemble and assemble the core pull or extrusion pin set from the mold alone. Disassembling and assembling the molds results in a lot of time being wasted, which cannot meet the customer's sample delivery time requirements; it reduces the production efficiency of the die-casting machine and reduces the utilization rate of the die-casting machine. Utility Model Content

[0005] The purpose of the utility model is to provide a dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure to solve the defects mentioned in the above background technology.

[0006] In order to achieve the above-mentioned purpose, a dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure is provided, including a fixed sleeve, one end of the fixed sleeve is fixedly installed with an oil cylinder, and the end of the piston rod of the oil cylinder is fixedly provided with a connecting rod, and the connecting rod is movably arranged inside the fixed sleeve, and the end of the connecting rod away from the oil cylinder is fixedly installed with a core-pulling sleeve, the core-pulling sleeve is adapted to the size of the core-pulling sleeve, and the core-pulling sleeve is inserted into the interior of the core-pulling sleeve, a disassembly seat is fixedly provided at the end of the core-pulling sleeve, and an internal thread structure is provided on the inner wall surface of the disassembly seat.

[0007] Preferably, a receiving hole is provided inside the core-pulling sleeve, and the core-pulling movement is arranged inside the receiving hole, and the axial cross-sections of the core-pulling sleeve and the core-pulling sleeve are concentric circle structures.

[0008] Preferably, the core pulling sleeve includes a sleeve, and a disassembly seat is fixedly provided at one end of the sleeve, and a tapered tube is fixedly provided at a side of the sleeve away from the disassembly seat.

[0009] Preferably, the disassembly seat is cylindrical, and the diameter of the disassembly seat is larger than the diameter of the sleeve.

[0010] Preferably, a thin tube is fixedly provided at the end of the tapered tube, and the thin tube is fixedly connected to the disassembly seat through the tapered tube and the sleeve.

[0011] Preferably, the piston rod of the oil cylinder is fixedly connected to the core pulling sleeve via a connecting rod, and the oil cylinder drives the core pulling sleeve to perform transverse reciprocating motion inside the core pulling sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. When a core pulling device is broken, the oil cylinder is first removed, and the connecting rod is driven by the oil cylinder to remove the core pulling device; the thread at the end of the extension rod is screwed into the disassembly seat at the end of the core pulling sleeve, and the extension rod is pulled outward to remove the core pulling sleeve, so that the damaged core pulling sleeve and the core pulling device can be quickly replaced;

[0014] 2. The utility model does not need to disassemble the entire die-casting mold when the extrusion pin or core puller breaks, and the core puller can be quickly disassembled and assembled from the mold separately, thereby preventing the time wasted due to disassembly and assembly of the mold, thereby meeting the customer's sample delivery time requirements; achieving the purpose of reducing costs and increasing efficiency, reducing the time wasted on disassembly and assembly of the mold caused by core puller failures in the mold during the mass production stage, improving production efficiency, and increasing the utilization rate of the die-casting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0016] Figure 2 Schematic diagram of the internal structure of the core pulling sleeve;

[0017] Figure 3 It is a schematic diagram of the core pulling sleeve;

[0018] Figure 4 for Figure 3 Bottom view of .

[0019] Numbers in the figure: 1. core pulling; 2. core pulling sleeve; 21. sleeve; 22. tapered tube; 23. thin tube; 24. disassembly seat; 25. internal thread structure; 3. fixing sleeve; 4. connecting rod; 5. oil cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a quick disassembly and assembly core-pulling structure of a double-gear steering gear die-casting mold, including a fixed sleeve 3, one end of the fixed sleeve 3 is fixedly installed with an oil cylinder 5, and the end of the piston rod of the oil cylinder 5 is fixedly provided with a connecting rod 4, and the connecting rod 4 is movably arranged inside the fixed sleeve 3, and the end of the connecting rod 4 away from the oil cylinder 5 is fixedly installed with a core pulling 1, the core pulling 1 is adapted to the size of the core pulling sleeve 2, and the core pulling 1 is inserted into the interior of the core pulling sleeve 2, a disassembly seat 24 is fixedly provided at the end of the core pulling sleeve 2, and an internal thread structure 25 is provided on the inner wall surface of the disassembly seat 24.

[0022] Working principle: This equipment is divided into five parts: core pulling 1, core pulling sleeve 2, fixed sleeve 3, connecting rod 4 and oil cylinder 5. The disassembly seat 24 at the end of the core pulling sleeve 2 has an internal thread structure 25. The action process of this device is that the oil cylinder 5 drives the connecting rod 4, and the connecting rod 4 drives the core pulling 1 to move. When the core pulling 1 is broken, the oil cylinder 5 is first removed, and the connecting rod 4 is driven by the oil cylinder 5 to take out the core pulling 1. When the core pulling sleeve 2 needs to be replaced, the fixed sleeve 3 is taken out, and an extension rod with a thread that matches the size of the internal thread structure 25 is used to screw the thread at the end of the extension rod to the end of the core pulling sleeve 2. After the installation is completed, the extension rod is pulled outward to remove the core pulling sleeve 2, so that the damaged core pulling sleeve 2 and the core pulling 1 can be quickly replaced. The disassembly of the entire core pulling device can be carried out without disassembling the bottom plate, ejector cover plate and ejector plate of the die-casting mold. The core pulling device can be completely removed from the mold for replacement, eliminating the manpower, material resources and time wasted in disassembling the mold and improving production efficiency. When the die-casting mold adopts this fast disassembly and assembly core pulling structure, the efficiency of mold repair can be effectively improved, the time can be greatly shortened, and the losses caused by mold problems can be reduced.

[0023] As a preferred embodiment, a receiving hole is provided inside the core pulling sleeve 2, and the core pulling sleeve 1 is movably arranged inside the receiving hole. At the same time, the axial sections of the core pulling sleeve 1 and the core pulling sleeve 2 are concentric circle structures.

[0024] The core pulling sleeve 2 includes a sleeve 21 , and a disassembly seat 24 is fixedly provided at one end of the sleeve 21 , while a tapered tube 22 is fixedly provided at a side of the sleeve 21 away from the disassembly seat 24 .

[0025] As a preferred embodiment, the disassembly seat 24 is cylindrical, and the diameter of the disassembly seat 24 is larger than the diameter of the sleeve 21 .

[0026] A thin tube 23 is fixedly provided at the end of the tapered tube 22 , and the thin tube 23 is fixedly connected to the disassembly seat 24 through the tapered tube 22 and the sleeve 21 .

[0027] As a preferred embodiment, the piston rod of the oil cylinder 5 is fixedly connected to the core pulling 1 through the connecting rod 4, and the oil cylinder 5 drives the core pulling 1 to perform transverse reciprocating motion inside the core pulling sleeve 2.

[0028] When the mold has broken extrusion pins or core pullers, there is no need to disassemble the entire die-casting mold. The core puller 1 can be quickly disassembled and assembled from the mold alone, avoiding the time waste caused by disassembling the mold, thereby meeting the customer's sample delivery time requirements; achieving the purpose of reducing costs and increasing efficiency, reducing the time wasted on disassembling and assembling the mold due to failure of the core puller 1 in the mold during the mass production stage, improving production efficiency, and increasing the utilization rate of the die-casting machine.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure, comprising a fixed sleeve (3), characterized in that: One end of the fixed sleeve (3) is fixedly mounted with an oil cylinder (5), and the piston rod end of the oil cylinder (5) is fixedly provided with a connecting rod (4), and the connecting rod (4) is movably provided inside the fixed sleeve (3), and the end of the connecting rod (4) away from the oil cylinder (5) is fixedly mounted with a core puller (1), the core puller (1) is adapted to the size of the core puller sleeve (2), and the core puller (1) is inserted into the interior of the core puller sleeve (2), and a disassembly seat (24) is fixedly provided at the end of the core puller sleeve (2), and an internal thread structure (25) is provided on the inner wall surface of the disassembly seat (24).

2. The dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure according to claim 1, characterized in that: An accommodating hole is provided inside the core pulling sleeve (2), and the core pulling device (1) is movably arranged inside the accommodating hole. Simultaneously, the axial cross-sections of the core pulling device (1) and the core pulling sleeve (2) are concentric circle structures.

3. The dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure according to claim 1, characterized in that: The core pulling sleeve (2) comprises a sleeve (21), and a disassembly seat (24) is fixedly provided at one end of the sleeve (21), while a conical tube (22) is fixedly provided at a side of the sleeve (21) away from the disassembly seat (24).

4. The dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure according to claim 3, characterized in that: The disassembly seat (24) is cylindrical, and the diameter of the disassembly seat (24) is larger than the diameter of the sleeve (21).

5. The dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure according to claim 3, characterized in that: A thin tube (23) is fixedly provided at the end of the tapered tube (22), and the thin tube (23) is fixedly connected to the disassembly seat (24) through the tapered tube (22), the sleeve (21).

6. The dual-gear steering gear die-casting mold quick disassembly and assembly core-pulling structure according to claim 1, characterized in that: The piston rod of the oil cylinder (5) is fixedly connected to the core pulling device (1) via a connecting rod (4), and the oil cylinder (5) drives the core pulling device (1) to perform transverse reciprocating motion inside the core pulling sleeve (2).

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