A low-pressure casting mold for a housing

Abstract

The application relates to a shell low-pressure pouring mold and relates to the field of pouring molds. The mold comprises a fixed mold and a movable mold arranged above the fixed mold, cooling flow channel pipes are arranged around the inside of the movable mold, a multi-flow channel control head for supplying liquid to the cooling flow channel pipes is fixedly installed on the movable mold, a plurality of groups of liquid inlet pipes are arranged at the outer end of the multi-flow channel control head, a liquid return pipe group is correspondingly arranged below each liquid inlet pipe group, and the liquid inlet pipe group is sealingly connected with the multi-flow channel control head through a liquid inlet treatment head. The multi-flow channel control head is used for realizing multi-path control and circulating flow of the cooling liquid, the liquid inlet treatment head is used for filtering impurities and improving heat dissipation efficiency, and a detection pipe head is used for monitoring the cooling liquid temperature in real time, so that the mold cooling is more uniform, the quality defects such as uneven surface and internal pores of the pouring product are effectively reduced, and the forming quality of the product is improved.

Description

Technical Field

[0001] This application relates to the technical field of casting molds, and in particular to a low-pressure casting mold for a shell. Background Technology

[0002] In mass production in the automotive, electronics and other fields, molding equipment such as injection molds and die-casting molds are core equipment. They achieve the manufacturing of parts by closing the moving mold and the fixed mold, injecting molten raw materials, and cooling and solidifying them. The cooling system is a key part of the mold equipment. Traditional cooling systems consist of a single inlet pipe, an outlet pipe, and a simple flow channel inside the mold. The coolant circulates and carries away the heat from the solidification of the raw materials.

[0003] Low-pressure casting molds mostly use fixed mold cooling. When the product thickness is large, the cooling uniformity is poor. A single flow channel or a simple branch flow channel leads to uneven coolant flow rate and large temperature differences in different areas of the mold, causing quality problems such as uneven product surface, warping, and internal pores, increasing the defect rate and cost.

[0004] Meanwhile, the flow channels used in traditional low-pressure casting molds are at high risk of blockage by impurities. Impurities in the coolant (dust, debris, scale, etc.) can easily enter the flow channels due to the lack of a filtration device, causing blockages. This can not only lead to local cooling failures but also cause pipe ruptures, coolant pump damage, and other malfunctions, increasing maintenance costs and interrupting production. Utility Model Content In order to achieve safe and uniform cooling of products, this application provides a low-pressure casting mold for the shell.

[0005] The low-pressure casting mold for a shell provided in this application adopts the following technical solution: A low-pressure casting mold for a shell includes a fixed mold and a movable mold disposed above the fixed mold. Cooling flow channels are arranged around the inside of the movable mold, and a multi-channel control head is fixedly installed on the movable mold and sealed to the cooling flow channels. Several sets of liquid inlet pipes are provided at the outer end of the multi-channel control head, and a return pipe set is provided below each of the liquid inlet pipe sets. The liquid inlet pipe sets are sealed to the multi-channel control head through a liquid inlet treatment head, and the return pipe sets are sealed to the multi-channel control head through a detection pipe head.

[0006] By adopting the above technical solution, casting and molding are achieved through the cooperation of a fixed mold and a moving mold. The mold not only has cooling channels in the traditional fixed mold, but also has corresponding cooling channel pipes arranged around the inside of the moving mold to further enhance the cooling and demolding effects of the product. By fixing a multi-channel control head on the moving mold, it is convenient to connect the inlet and return liquid pipe groups to the cooling channel pipes during use, thereby achieving the purpose of stable circulation of cooling water. The multi-channel control head ensures that the coolant entering the cooling channel pipes is filtered to prevent impurities from entering and settling into the cooling channel pipes and affecting the normal flow of the coolant. At the same time, the multi-channel control head also ensures that the coolant can rotate into the cooling channel pipes for better cooling effect. The temperature of the return liquid is monitored in real time by the setting of the detection pipe head, and the flow rate of the coolant can be adjusted by controlling the external cooling pump based on the return temperature.

[0007] Optionally, the multi-channel control head includes a connecting seat, an external top tube, and an external bottom tube. The connecting seat is fixedly installed on the moving mold, and the external bottom tube is located below the external top tube. Both the external top tube and the external bottom tube are sealed and installed on the outer side of the connecting seat.

[0008] By adopting the above technical solution, the multi-channel control head allows coolant to enter and exit the cooling channel pipes through the external top pipe and external bottom pipe respectively, realizing multi-channel control and circulation of coolant. The connecting seat is fixed on the moving mold, ensuring a stable connection between the multi-channel control head and the moving mold and preventing coolant leakage. In actual use, multiple sets of coolant circulation can be achieved simultaneously.

[0009] Optionally, the liquid inlet pipe assembly includes a liquid inlet bend and a water supply hose connected to an external cooling pump. The head of the liquid inlet bend is sealed to the liquid inlet treatment head, and the water supply hose is sealed to the lower end of the liquid inlet bend.

[0010] By adopting the above technical solution, the inlet pipe assembly introduces coolant from the external cooling pump into the multi-channel control head through the inlet bend and the water supply hose. The inlet bend is designed to facilitate adjustment of the coolant flow direction, and the water supply hose has a certain degree of flexibility, making it easy to connect to the external cooling pump. At the same time, it can adapt to the slight vibrations of the mold during operation, ensuring a stable supply of coolant.

[0011] Optionally, the return pipe assembly includes an outlet bend and a return hose, wherein the head of the outlet bend is sealed to the detection tube head, and the return hose is sealed to the lower end of the outlet bend.

[0012] By adopting the above technical solution, the return pipe assembly draws the used coolant from the multi-channel control head through the outlet bend and return hose, realizing the recycling of coolant. The outlet bend facilitates the discharge of coolant, and the return hose sends the coolant back to the cooling system for processing and cooling, improving the utilization rate of coolant and reducing production costs.

[0013] Optionally, the liquid inlet treatment head includes a connecting tube shell, a filter screen shell, and a swirl plate. The filter screen shell is detachably installed at the front end of the middle part of the connecting tube shell. The swirl plate is evenly arranged at the tail end of the inner side of the connecting tube shell along the circumferential direction, and the swirl plate is integrally formed with the connecting tube shell.

[0014] By adopting the above technical solution, the filter screen in the liquid inlet head can effectively filter impurities in the coolant, preventing impurities from entering the cooling channel tube and causing blockage, thus extending the service life of the cooling channel tube. The design of the swirling baffle causes the coolant to form a swirling flow inside the connecting tube shell, increasing the contact area between the coolant and the tube wall, improving the heat dissipation efficiency of the coolant, and further ensuring the cooling effect.

[0015] Optionally, the connecting shell includes a flow-concentrating inner shell, a first connecting ring, and a second connecting ring, wherein the first connecting ring and the second connecting ring are integrally formed and disposed at the front and rear ends of the flow-concentrating inner shell.

[0016] By adopting the above technical solution, the converging shell of the connecting tube can gather the coolant, and the first and second connecting rings can be conveniently connected to the inlet bend and the multi-channel control head for sealing, ensuring that the coolant will not leak during transportation, thus improving the sealing performance and stability of the entire cooling system.

[0017] Optionally, the detection tube head includes a connecting sleeve and a temperature sensor, wherein the temperature sensor is fixedly installed on the lower end face of the connecting sleeve, and the head of the temperature sensor extends into the connecting sleeve.

[0018] By adopting the above technical solution, the temperature sensor in the detection tube head can monitor the temperature of the return coolant in real time. By monitoring the coolant temperature, the cooling status of the mold can be understood in a timely manner. When the coolant temperature is too high, the power of the cooling pump can be adjusted or the coolant can be replaced in time to ensure the cooling effect of the mold and improve the quality of the cast products.

[0019] Optionally, the lower end face of the fixed mold is provided with a pouring port, and the pouring port is sealed and fixedly connected to the fixed mold.

[0020] By adopting the above technical solution, the pouring port on the lower end face of the fixed mold is sealed and fixedly connected to the fixed mold, ensuring that molten metal can be accurately injected into the mold cavity during low-pressure pouring, avoiding molten metal leakage, ensuring the smooth progress of the pouring process, and improving the molding quality of the product.

[0021] In summary, this application includes at least one of the following beneficial technical effects: multi-channel control and circulation of coolant are achieved through a multi-channel control head; the inlet treatment head filters impurities and improves heat dissipation efficiency; and the detection tube head monitors coolant temperature in real time, resulting in more uniform mold cooling. This effectively reduces quality defects such as uneven surface and internal porosity in the cast products, thus improving the molding quality. Simultaneously, the inlet treatment head filters impurities in the coolant, effectively preventing impurities from clogging the cooling channels, reducing cooling system malfunctions and damage, and extending the mold's service life. Attached Figure Description

[0022] Figure 1 This is an exploded structural diagram of the overall structure in the embodiments of this application.

[0023] Figure 2 This is a perspective view of the multi-channel control head, inlet bend, outlet bend, outlet bend, and detection tube head in combination in the embodiments of this application.

[0024] Figure 3 yes Figure 2 Front view of the device shown.

[0025] Figure 4 This is a perspective view of the liquid inlet treatment head in the embodiments of this application.

[0026] Figure 5 yes Figure 4 A cross-sectional view of the device shown.

[0027] Explanation of reference numerals in the attached drawings: 1. Fixed mold; 11. Sprue; 2. Moving mold; 20. Cooling channel pipe; 3. Multi-channel control head; 31. Connecting seat; 32. External top pipe; 33. External bottom pipe; 4. Liquid inlet pipe assembly; 41. Liquid inlet bend; 42. Water supply hose; 5. Liquid return pipe assembly; 51. Liquid outlet bend; 52. Return hose; 6. Liquid inlet treatment head; 61. Connecting pipe shell; 611. Converging middle shell; 612. First connecting ring; 613. Second connecting ring; 62. Filter screen shell; 63. Swirl baffle; 7. Detection pipe head; 71. Connecting sleeve; 72. Temperature sensor. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a low-pressure casting mold for a shell. (Refer to...) Figure 1 , Figure 2 and Figure 3A low-pressure casting mold for a shell includes a fixed mold 1 and a movable mold 2 disposed above the fixed mold 1. A casting port 11 is provided on the lower end face of the fixed mold 1, and the casting port 11 is sealed and fixedly connected to the fixed mold 1. The sealed and fixed connection of the casting port 11 on the lower end face of the fixed mold 1 ensures that molten metal can be accurately injected into the mold cavity during low-pressure casting, avoiding molten metal leakage, ensuring the smooth progress of the casting process, and improving the molding quality of the product. Cooling channel pipes 20 are arranged around the inside of the movable mold 2, and a multi-channel control head 3 is fixedly installed on the movable mold 2 and sealed to the cooling channel pipes 20. Several sets of liquid inlet pipe groups 4 are provided at the outer end of the multi-channel control head 3, and return pipe groups 5 are correspondingly provided below each of the liquid inlet pipe groups 4. The liquid inlet pipe groups 4 are sealed to the multi-channel control head 3 through a liquid inlet treatment head 6, and the return pipe groups 5 are sealed to the multi-channel control head 3 through a detection pipe head 7. The casting process is achieved through the cooperation of the fixed mold 1 and the moving mold 2. The mold not only has a cooling channel in the traditional fixed mold 1, but also has corresponding cooling channel pipes 20 arranged around the inside of the moving mold 2 to further enhance the cooling effect and demolding effect of the product. By fixing the multi-channel control head 3 on the moving mold 2, it is convenient to connect the liquid inlet pipe group 4 and the liquid return pipe group 5 through the multi-channel control head 3 to connect with the cooling channel pipe 20, thereby achieving the purpose of stable circulation of cooling water. The setting of the multi-channel control head 3 ensures that the coolant entering the cooling channel pipe 20 is filtered to prevent impurities from entering and settling in the cooling channel pipe 20 and affecting the normal flow of cooling water. At the same time, the multi-channel control head 3 can also ensure that the coolant can rotate into the cooling channel pipe 20 to ensure better cooling effect. The setting of the detection pipe head 7 is used to detect the temperature of the return liquid in real time, and the external cooling pump can be controlled according to the return temperature to adjust the flow rate of the coolant.

[0030] Reference Figure 2 and Figure 3 The multi-channel control head 3 includes a connecting seat 31, an external top pipe 32, and an external bottom pipe 33. The connecting seat 31 is fixedly mounted on the moving mold 2, and the external bottom pipe 33 is located below the external top pipe 32. Both the external top pipe 32 and the external bottom pipe 33 are sealed and mounted on the outer side of the connecting seat 31. The multi-channel control head 3 allows coolant to enter and exit the cooling channel pipe 20 through the external top pipe 32 and the external bottom pipe 33 respectively, realizing multi-channel control and circulation of coolant. The connecting seat 31 is fixed to the moving mold 2, ensuring a stable connection between the multi-channel control head 3 and the moving mold 2 and preventing coolant leakage. In actual use, multiple sets of coolant circulation can be achieved simultaneously.

[0031] Reference Figure 1The inlet pipe assembly 4 includes an inlet bend 41 and a water supply hose 42 connected to an external cooling pump. The head of the inlet bend 41 is sealed to the inlet treatment head 6, and the water supply hose 42 is sealed to the lower end of the inlet bend 41. The inlet pipe assembly 4 introduces coolant from the external cooling pump into the multi-channel control head 3 through the inlet bend 41 and the water supply hose 42. The design of the inlet bend 41 facilitates adjustment of the coolant flow direction, and the water supply hose 42 has a certain degree of flexibility, making it easy to connect to the external cooling pump. It can also adapt to the slight vibration of the mold during operation, ensuring a stable supply of coolant. The return pipe assembly 5 includes an outlet bend 51 and a return hose 52. The head of the outlet bend 51 is sealed to the detection pipe head 7, and the return hose 52 is sealed to the lower end of the outlet bend 51. The return pipe assembly 5 leads the used coolant out of the multi-channel control head 3 through the outlet bend 51 and the return hose 52, realizing the recycling of coolant. The outlet bend 51 facilitates the discharge of coolant, and the return hose 52 sends the coolant back to the cooling system for processing and cooling, which improves the utilization rate of coolant and reduces production costs.

[0032] Reference Figure 4 and Figure 5 The liquid inlet treatment head 6 includes a connecting tube shell 61, a filter screen shell 62, and a swirling baffle 63. The filter screen shell 62 is detachably installed at the front end of the middle part of the connecting tube shell 61. The swirling baffle 63 is evenly arranged at the rear end of the inner side of the connecting tube shell 61 along the circumferential direction, and the swirling baffle 63 is integrally formed with the connecting tube shell 61. The filter screen shell 62 in the liquid inlet treatment head 6 can effectively filter impurities in the coolant, prevent impurities from entering the cooling channel tube 20 and causing blockage, and extend the service life of the cooling channel tube 20. The design of the swirling baffle 63 makes the coolant form a swirling flow in the connecting tube shell 61, increasing the contact area between the coolant and the tube wall, improving the heat dissipation efficiency of the coolant, and further ensuring the cooling effect. The connecting tube shell 61 includes a converging middle shell 611, a first connecting ring 612, and a second connecting ring 613. The first connecting ring 612 and the second connecting ring 613 are integrally formed at the front and rear ends of the converging middle shell 611. The concentrating shell 611 of the connecting tube shell 61 can gather the coolant, and the first connecting ring 612 and the second connecting ring 613 can be conveniently connected to the inlet bend 41 and the multi-channel control head 3 in a sealed manner to ensure that the coolant will not leak during transportation, thereby improving the sealing performance and stability of the entire cooling system.

[0033] Reference Figure 2 and Figure 3The detection tube head 7 includes a connecting sleeve 71 and a temperature sensor 72. The temperature sensor 72 is fixedly installed on the lower end face of the connecting sleeve 71, and the head of the temperature sensor 72 extends into the connecting sleeve 71. The temperature sensor 72 in the detection tube head 7 can monitor the temperature of the return coolant in real time. By monitoring the temperature of the coolant, the cooling status of the mold can be understood in a timely manner. When the coolant temperature is too high, the power of the cooling pump can be adjusted or the coolant can be replaced in time to ensure the cooling effect of the mold and improve the quality of the cast products.

[0034] The implementation principle of a low-pressure casting mold for a housing according to an embodiment of this application is as follows: In actual use, the external cooling pump is started, and the coolant enters the inlet bend 41 through the water supply hose 42, and then flows into the inlet treatment head 6. In the inlet treatment head 6, the coolant first passes through the filter screen shell 62 to filter impurities, and then forms a swirling flow under the action of the swirling inclined plate 63 to improve heat dissipation efficiency before entering the multi-channel control head 3. The coolant enters the cooling channel pipe 20 inside the moving mold 2 through the external top pipe 32 of the multi-channel control head 3 to cool the moving mold 2. The used coolant enters the outlet bend 51 of the return pipe group 5 through the external bottom pipe 33 of the multi-channel control head 3, and then flows back to the cooling system through the return hose 52 for processing and cooling. During the coolant circulation process, the temperature sensor 72 in the detection pipe head 7 monitors the temperature of the return coolant in real time and transmits the temperature signal to the control system. When the coolant temperature is too high, the control system automatically adjusts the power of the cooling pump to increase the coolant flow rate, or prompts the operator to replace the coolant to ensure the cooling effect of the mold.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-pressure casting mold for a shell, comprising a fixed mold (1) and a movable mold (2) disposed above the fixed mold (1), characterized in that: The moving mold (2) is provided with cooling channel pipes (20) arranged around its interior. A multi-channel control head (3) is fixedly installed on the moving mold (2) and sealed to the cooling channel pipes (20). Several sets of liquid inlet pipe groups (4) are provided at the outer end of the multi-channel control head (3). A return pipe group (5) is provided below each of the liquid inlet pipe groups (4). The liquid inlet pipe group (4) is sealed to the multi-channel control head (3) through the liquid inlet treatment head (6). The return pipe group (5) is sealed to the multi-channel control head (3) through the detection pipe head (7).

2. The low-pressure casting mold for a shell according to claim 1, characterized in that: The multi-channel control head (3) includes a connecting seat (31), an external top tube (32) and an external bottom tube (33). The connecting seat (31) is fixedly installed on the moving mold (2). The external bottom tube (33) is located below the external top tube (32), and both the external top tube (32) and the external bottom tube (33) are sealed and installed on the outer side of the connecting seat (31).

3. A shell low pressure form according to claim 2, wherein: The liquid inlet pipe assembly (4) includes a liquid inlet bend (41) and a water supply hose (42) connected to an external cooling pump. The head of the liquid inlet bend (41) is sealed to the liquid inlet treatment head (6), and the water supply hose (42) is sealed to the lower end of the liquid inlet bend (41).

4. A shell low pressure form according to claim 3, wherein: The return pipe assembly (5) includes an outlet bend (51) and a return hose (52). The head of the outlet bend (51) is sealed to the detection tube head (7), and the return hose (52) is sealed to the lower end of the outlet bend (51).

5. A shell low pressure form according to claim 4, wherein: The liquid inlet treatment head (6) includes a connecting tube shell (61), a filter screen shell (62), and a swirl plate (63). The filter screen shell (62) is detachably installed at the front end of the middle part of the connecting tube shell (61). The swirl plate (63) is evenly arranged at the tail end of the inner side of the connecting tube shell (61) along the circumferential direction, and the swirl plate (63) is integrally formed with the connecting tube shell (61).

6. A shell low pressure form according to claim 5, wherein: The connecting shell (61) includes a flow-concentrating shell (611), a first connecting ring (612), and a second connecting ring (613). The first connecting ring (612) and the second connecting ring (613) are integrally formed and disposed at the front and rear ends of the flow-concentrating shell (611).

7. A low-pressure casting mold for a shell according to claim 6, characterized in that: The detection tube head (7) includes a connecting sleeve (71) and a temperature sensor (72). The temperature sensor (72) is fixedly installed on the lower end face of the connecting sleeve (71), and the head of the temperature sensor (72) extends into the connecting sleeve (71).

8. A shell low pressure form according to claim 7, wherein: The lower end face of the fixed mold (1) is provided with a pouring port (11), and the pouring port (11) is sealed and fixedly connected to the fixed mold (1).

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