Core-pulling cooling device for die-casting die

Abstract

The utility model discloses a core-pulling cooling device for a die-casting die. The core-pulling cooling device comprises a piston cylinder, a pulling core and a cooling pipe, the loose core is connected to the power output end of the piston cylinder, a blind hole is formed in one axial end of the loose core, one end of the cooling pipe is in seal fit with the blind hole, and a gap is reserved between the other end of the cooling pipe and the blind hole to form a cooling cavity. A through hole is axially formed in the cooling pipe, the open end of the blind hole is connected with a plug, and a liquid inlet cavity is formed between the plug and one end of the cooling pipe; a liquid inlet hole and a liquid return hole are formed in the loose core, the liquid inlet hole is communicated with the liquid inlet cavity, the liquid return hole is communicated with the cooling cavity, a liquid inlet quick-change connector is connected to the liquid inlet hole, and a liquid return quick-change connector is connected to the liquid return hole. Compared with the prior art, the structure is simple, the cost is low, the processing and the installation are convenient, the cooling effect on the core pulling position is good, and the mold design space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, in particular to a core-pulling cooling device for a die-casting mold. Background Art

[0002] During the die-casting process, the die must be cooled to prevent aluminum from sticking during core pulling and to maintain the surface roughness of the product. Currently, commonly used die-casting cooling devices are complex, costly, and difficult to install. They also provide suboptimal cooling at the core pulling location and make core pulling inconvenient. Utility Model Content

[0003] The purpose of the utility model is to provide a die-casting mold core pulling cooling device with a simple structure, low cost, easy processing and installation, good cooling effect on the core pulling position, saving mold design space, so as to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A die-casting mold core pulling cooling device comprises a piston cylinder, a core pulling core and a cooling pipe; the core pulling core is connected to the power output end of the piston cylinder, a blind hole is provided at one axial end of the core pulling core along the axis, one end of the cooling pipe is sealed in the blind hole, and a gap is left between the other end and the blind hole to form a cooling cavity; a through hole is provided axially of the cooling pipe, a plug is connected to the open end of the blind hole, and a liquid inlet cavity is formed between the plug and one end of the cooling pipe; a liquid inlet hole and a liquid return hole are provided on the core pulling core, the liquid inlet hole is connected to the liquid inlet cavity, the liquid return hole is connected to the cooling cavity, a liquid inlet quick-change joint is connected to the liquid inlet hole, and a liquid return quick-change joint is connected to the liquid return hole.

[0006] A further improvement of the present invention is that one end of the piston rod and one end of the core pulling are provided with a groove, the piston rod abuts against one end of the core pulling, two ferrules are clamped in the groove, and the two ferrules are connected by fasteners.

[0007] A further improvement of the present invention is that the blind hole is a stepped hole, and the outer peripheral surface of the cooling pipe is stepped, and one end of the cooling pipe close to the piston cylinder is interference-fitted in the blind hole.

[0008] A further improvement of the present invention is that the plug thread is fitted into the open end of the blind hole.

[0009] A further improvement of the present invention is that the core pulling device and the cooling tube are arranged concentrically.

[0010] A further improvement of the present invention is that the cooling tube is made of stainless steel.

[0011] A further improvement of the present invention is that a lug plate is connected to the ferrule, two slide seats are connected to the cylinder barrel of the piston cylinder, one end of the slide rod is connected to the lug plate, and the slide rod is slidably fitted in the two slide seats.

[0012] A further improvement of the present invention is that two travel switches are connected to the cylinder barrel of the piston cylinder, and two contact blocks are connected to the slide rod. When the piston rod is extended or retracted, the two contact blocks respectively contact the two travel switches.

[0013] Beneficial effects of the utility model:

[0014] The die-casting mold core-pulling cooling device of the utility model has a simple structure, low cost, and is easy to manufacture and install, has a good cooling effect on the core-pulling position, and saves mold design space.

[0015] This new die-casting mold core-pulling cooling device allows the coolant to flow along the core axis, ensuring that every position of the core is well cooled, avoiding local overheating and ensuring effective cooling. The quick-change connector is easy to install and replace.

[0016] The die-casting mold core-pulling cooling device of the utility model has a quick-change joint that is easy to install and replace, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 3 It is a partial cross-sectional view of the present utility model.

[0020] Figure 4 This is a schematic diagram of the cooling pipe structure of the present utility model.

[0021] In the figure: 1-piston cylinder, 101-cylinder barrel, 102-piston rod, 2-core pulling, 201-cooling chamber, 202-liquid inlet chamber, 3-cooling air pipe, 301-through hole, 4-plug, 5-liquid inlet quick-change connector, 6-liquid return quick-change connector, 7-ferrule, 8-ear plate, 9-slide seat, 10-travel switch, 11-contact block, 12-slide rod. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: Figures 1 to 4As shown, a die-casting mold core pulling cooling device includes a piston cylinder 1, a core pulling 2 and a cooling tube 3; the core pulling 2 is connected to the power output end of the piston cylinder 1, and a blind hole is opened along the axis at one axial end of the core pulling 2. One end of the cooling tube 3 is sealed in the blind hole, and a gap is left between the other end and the blind hole to form a cooling chamber 201; the cooling tube 3 is axially opened with a through hole 301, and the open end of the blind hole is connected to a plug 4, forming a liquid inlet chamber 202 between the plug 4 and one end of the cooling tube 3; the core pulling 2 is provided with a liquid inlet hole and a liquid return hole, the liquid inlet hole is connected to the liquid inlet chamber 202, and the liquid return hole is connected to the cooling chamber 201, the liquid inlet hole is connected to a liquid inlet quick-change joint 5, and the liquid return hole is connected to a liquid return quick-change joint 6. One end of the piston rod 102 of the piston steel and one end of the core pulling 2 are both provided with a slot, and the piston rod 102 abuts one end of the core pulling 2. Two ferrules 7 are engaged in the slots, and the two ferrules 7 are connected by fasteners. The blind hole is a stepped hole, and the outer cylindrical surface of the cooling tube 3 is stepped. The cooling tube 3 is interference-fitted into the blind hole at one end close to the piston cylinder 1. The plug 4 is threadedly fitted into the open end of the blind hole. An ear plate 8 is connected to the ferrule 7, and two slides 9 are connected to the cylinder barrel 101 of the piston cylinder 1. One end of the slide rod 12 is connected to the ear plate 8, and the slide rod 12 slides and fits into the two slides 9. The core pulling 2 is concentrically arranged with the cooling tube 3. The cooling tube 3 is made of stainless steel. Two travel switches 10 are connected to the cylinder barrel 101 of the piston cylinder 1, and two contacts 11 are connected to the slide rod 12. When the piston rod 102 is extended or retracted, the two contacts 11 respectively contact the two travel switches 10.

[0024] The specific working principle of this utility model is as follows:

[0025] During operation, the coolant enters the liquid inlet cavity 202 from the liquid inlet quick-change joint 5, and flows along the through hole 301 to the head of the core pull 2, which can directly cool the head of the core pull 2. Then, it flows from the cooling cavity 201 between the cooling tube 3 and the core pull 2 to the rear end and is discharged from the liquid return quick-change joint 6. The utility model has a simple structure, low cost, and is easy to process and install. It has a good cooling effect on the position of the core pull 2, saving mold design space; the coolant flows along the axis of the core, ensuring that every position of the core can be well cooled, avoiding local overheating, and ensuring the cooling effect. The quick-change joint is easy to install and simple to replace; the quick-change joint is easy to install and replace, which greatly improves work efficiency.

[0026] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A die-casting mold core-pulling cooling device, characterized by: The invention comprises a piston cylinder (1), a core puller (2) and a cooling tube (3); the core puller (2) is connected to the power output end of the piston cylinder (1); a blind hole is provided at one axial end of the core puller (2) along the axis; one end of the cooling tube (3) is sealed in the blind hole, and a gap is left between the other end and the blind hole to form a cooling cavity (201); a through hole (301) is provided axially on the cooling tube (3); a plug (4) is connected to the open end of the blind hole; a liquid inlet cavity (202) is formed between the plug (4) and one end of the cooling tube (3); a liquid inlet hole and a liquid return hole are provided on the core puller (2); the liquid inlet hole is connected to the liquid inlet cavity (202), and the liquid return hole is connected to the cooling cavity (201); a liquid inlet quick-change joint (5) is connected to the liquid inlet hole, and a liquid return quick-change joint (6) is connected to the liquid return hole.

2. A die-casting mold core pulling (2) cooling device according to claim 1, characterized in that: One end of the piston rod (102) of the piston cylinder (1) and one end of the core puller (2) are both provided with a slot, the piston rod (102) abuts against one end of the core puller (2), two ferrules (7) are engaged in the slot, and the two ferrules (7) are connected by a fastener.

3. A die-casting mold core pulling (2) cooling device according to claim 1 or 2, characterized in that: The blind hole is a stepped hole, and the outer peripheral surface of the cooling tube (3) is stepped. One end of the cooling tube (3) close to the piston cylinder (1) is interference-fitted in the blind hole.

4. A die-casting mold core pulling (2) cooling device according to claim 1, characterized in that: The plug (4) is threadedly engaged with the open end of the blind hole.

5. A die-casting mold core pulling (2) cooling device according to claim 1, characterized in that: The core pulling (2) and the cooling pipe (3) are arranged concentrically.

6. A die-casting mold core pulling (2) cooling device according to claim 1, characterized in that: The cooling tube (3) is made of stainless steel.

7. A die-casting mold core pulling (2) cooling device according to claim 2, characterized in that: The ferrule (7) is connected to an ear plate (8), the cylinder barrel (101) of the piston cylinder (1) is connected to two slide seats (9), one end of the slide rod (12) is connected to the ear plate (8), and the slide rod (12) is slidably fitted on the two slide seats (9).

8. A die-casting mold core pulling (2) cooling device according to claim 5, characterized in that: Two travel switches (10) are connected to the cylinder barrel (101) of the piston cylinder (1), and two contact blocks (11) are connected to the slide rod (12). When the piston rod (102) is extended or retracted, the two contact blocks (11) respectively contact the two travel switches (10).

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