External cooling mechanism of evanescent mode mold

Abstract

The utility model discloses an external cooling mechanism of an evanescent mode mold. The external cooling mechanism comprises a cooling water pipe, a four-way seat, a mold pagoda water nozzle and a water inlet joint, the four-way seat is arranged on the base outside the front surface of the metal outer mold; the water inlet joint is in threaded connection with the four-way seat water inlet; the three die pagoda water nozzles are respectively connected to the horizontal left through hole, the horizontal right through hole and the upward vertical through hole of the four-way seat through threads; one end of each cooling water pipe is tightly sleeved with a pagoda water nozzle of the mold, the other end of each cooling water pipe penetrates through the outer mold frame from the highest position of the shape follow-up cavity of the inner wall of the mold to enter the mold cavity, and a spray head is arranged at the tail end of each cooling water pipe to form umbrella-shaped spray cooling on the inner cavity of the mold. The mold is simple and compact in structure and low in manufacturing cost, the mold piece cooling effect of the side wall of the metal mold is good, and the problems that in the prior art, due to the fact that a large foam mold piece groove is deep, the side wall of the metal mold cannot cool the mold piece, the smoothness of the side wall of the foam mold piece is low, and the casting size structure and surface quality are finally affected are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling devices for lost foam casting molds, and in particular to an external cooling mechanism for lost foam casting molds. Background Technology

[0002] The surface quality of castings produced using lost foam casting largely depends on the surface finish of the foam pattern. In current lost foam casting production, the molds typically employ fully automated mold removal methods. Cooling water is usually placed inside the cavity of the metal mold to cool the conformal cavity wall, which has a certain wall thickness. This cools the foam pattern, which is similar in size and shape to the casting, resulting in a smooth, high-precision surface finish and ultimately a casting with good surface quality. However, this cooling structure of the lost foam mold has the following drawbacks: When producing large castings with deep grooves, the deep grooves of the large foam pattern and the corresponding prominent bulges in the mold cavity prevent the metal mold sidewalls from cooling the pattern, leading to a low surface finish on the foam pattern sidewalls. Consequently, the resulting castings often fail to meet the requirements for product size, structure, and surface quality. Summary of the Invention

[0003] The purpose of this invention is to provide an external cooling mechanism for lost foam molds that is simple and compact in structure, low in manufacturing cost, and has a good cooling effect on the mold pieces by the sidewall of the metal mold. This solves the problem in the prior art where the deep grooves of large foam mold pieces prevent the sidewall of the metal mold from cooling the mold pieces, resulting in low surface finish of the foam mold piece sidewall and ultimately affecting the size, structure, and surface quality of the casting.

[0004] To achieve the above objectives, the present invention provides an external cooling mechanism for a lost foam casting mold, comprising a cooling water pipe 1, a four-way seat 3, a mold pagoda water nozzle 4, and a water inlet connector 5. The four-way seat 3 is located on a base outside the front of the metal outer mold. The water inlet connector 5 is threadedly connected to the horizontal through hole of the four-way seat 3. Three mold pagoda water nozzles 4 are provided, which are respectively threadedly connected to the horizontal left through hole, the horizontal right through hole, and the upward vertical through hole of the four-way seat 3. Three cooling water pipes 1 are provided corresponding to the mold pagoda water nozzles 4. One end of the cooling water pipe 1 is tightly and fixedly connected to the mold pagoda water nozzle 4, and the other end enters the outer mold frame 2 from the highest point of the conformal cavity of the inner wall of the metal mold, and enters the mold cavity after passing through the outer mold frame 2. The end of the cooling water pipe 1 is provided with a nozzle to form an umbrella-shaped spray cooling on the mold cavity.

[0005] The cooling water pipe 1 is made of polyester hose.

[0006] The nozzle is an all-copper atomizing nozzle.

[0007] This utility model discloses an external cooling mechanism for lost foam molds, which has the following technical features and beneficial effects:

[0008] 1. The inlet connector 5 of the external cooling mechanism is used to connect the cooling water supply pipe of the molding machine. The three cooling water pipes 1 enter the mold cavity from the highest point of the mold cavity through the outer mold frame 2. The mold cavity is effectively cooled from three different positions by umbrella-shaped spray. By controlling the size and flow rate of the cooling water in the equipment water supply system, the cooling effect of the metal mold sidewall on the mold piece can be ensured. This solves the problem in the prior art that the metal mold sidewall cannot cool the mold piece due to the deep groove of the large foam mold piece, resulting in low surface finish of the foam mold piece sidewall and ultimately affecting the size, structure and surface quality of the casting.

[0009] 2. This external cooling mechanism has a simple and compact structure, is easy to manufacture and install, and is reliable in operation. Attached Figure Description

[0010] Figure 1 This is a front view schematic diagram of an external cooling mechanism for a lost foam mold according to this utility model.

[0011] Figure 2 This is a top view schematic diagram of an external cooling mechanism for a lost foam casting mold according to this utility model.

[0012] Figure 3 This is a right-side view schematic diagram of an external cooling mechanism for a lost foam mold according to this utility model.

[0013] Figure 4 This is a right sectional view of the external cooling mechanism of a lost foam mold according to this utility model.

[0014] Attached reference numerals: 1. Cooling water pipe; 2. Outer mold frame; 3. Four-way seat; 4. Mold pagoda water nozzle; 5. Water inlet connector. Detailed Implementation

[0015] The following detailed description, in conjunction with the accompanying drawings, provides a further detailed implementation of the external cooling mechanism for a lost foam casting mold according to this utility model.

[0016] Figures 1-4 As shown, the external cooling mechanism of the lost foam mold of this utility model includes a cooling water pipe 1, a four-way seat 3, a mold pagoda water nozzle 4, and a water inlet connector 5. The four-way seat 3 is located on the base outside the front of the metal outer mold. The water inlet connector 5 is threadedly connected to the horizontal through hole of the four-way seat 3. There are three mold pagoda water nozzles 4, which are respectively threadedly connected to the horizontal left through hole, the horizontal right through hole, and the upward vertical through hole of the four-way seat 3. There are three cooling water pipes 1 corresponding to the mold pagoda water nozzles 4. They are made of polyester hoses. One end of the cooling water pipe 1 is tightly and fixedly connected to the mold pagoda water nozzle 4. The other end enters the outer mold frame 2 from the highest point of the conformal cavity of the inner wall of the metal mold. After passing through the outer mold frame 2, it enters the mold cavity. The end of the cooling water pipe 1 is provided with a full copper atomizing nozzle to form an umbrella-shaped spray cooling on the mold cavity.

[0017] The outer mold frame 2 and the four-way seat 3 are made of 6061 aluminum, and the mold pagoda water nozzle 4 and the water inlet connector 5 are made of brass and assembled together.

[0018] The cooling operation steps of the external cooling mechanism for lost foam casting mold of this utility model are as follows:

[0019] 1. Connect the water inlet connector 5 to the cooling water supply pipe of the molding machine;

[0020] 2. After the molding machine completes the molding process, turn on the equipment's water supply system. Cooling water is supplied to the mold in three directions through the inlet connector 5 and the four-way seat 3. The cooling water enters the outer mold frame 2 of the mold cavity through the cooling water pipe 1 made of polyester hose, thereby cooling the internal cavity of the metal mold. The low temperature inside the cavity counteracts the high temperature of the molding machine foam, thus cooling and solidifying the mold piece. The cooling water spraying time can be controlled on the molding machine to achieve a satisfactory cooling effect inside the mold.

Claims

1. An external cooling mechanism for an expendable pattern mold, characterized by: It includes cooling water pipe (1), four seat (3), mold pagoda water nozzle (4) and water inlet joint (5); four seat (3) is arranged on the base outside the front of metal outer mold; water inlet joint (5) is connected on the horizontal forward through hole of four seat (3) through thread; mold pagoda water nozzle (4) is provided with three, which are connected on the horizontal left through hole, horizontal right through hole and upward vertical through hole of four seat (3) through thread; cooling water pipe (1) is provided with three corresponding mold pagoda water nozzle (4), one end of the cooling water pipe (1) is tightly fixed on mold pagoda water nozzle (4), the other end respectively enters outer mold frame (2) from the highest part of the inner wall of metal mold along the shape of cavity, enters the inside of mold cavity after penetrating outer mold frame (2), the end of cooling water pipe (1) is provided with a spray head to form umbrella-shaped jet cooling for the inside cavity of mold.

2. The external cooling mechanism of the lost foam mold according to claim 1, characterized in that: The cooling water pipe (1) adopts polyester hose.

3. The external cooling mechanism of the lost foam mold according to claim 1, wherein: The spray head adopts full copper atomizing spray head.

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