Five-axis machining center based on double-lug cradle rotary table module

Abstract

The five-axis machining center comprises a shell, a fragment guide column is connected between the two sides in the shell, a fragment collecting structure and a mounting block are arranged at the positions, located below the fragment guide column, of the two sides in the shell correspondingly, and a guide block is connected between the fragment collecting structure and the mounting block; a rotating shaft is arranged in the guide block, and the outer wall of the upper end of the rotating shaft is connected with a mesh filter plate. According to the five-axis machining center based on the double-lug type cradle rotary table module, in the process that the mesh filter plate is driven by the rotating shaft to rotate, the heat dissipation structure is driven to operate at the same time, heat dissipation is conducted on cutting fluid, extra power driving is not needed, the production cost is effectively reduced, and energy conservation and environment protection are achieved. If the temperature of the cutting fluid is still not reduced to the set value after the cutting fluid passes through the heat dissipation structure, the temperature control structure automatically responds to break away from shielding of the backflow channel.

Description

Technical Field

[0001] The invention relates to the technical field of five-axis machining equipment, in particular to a five-axis machining center based on a binaural cradle turntable module. Background Art

[0002] The five-axis machining center with binaural cradle turntable module is a high-precision and high-efficiency CNC machine tool that realizes complex processing of workpieces through the linkage movement of five coordinate axes. This type of machining center usually contains three linear axes (X, Y, Z axes) and two rotary axes (A, C axes). The linear axes are responsible for movement in three orthogonal planes, while the rotary axes allow the workpiece or tool to rotate around a specific axis to achieve processing of different angles of the workpiece.

[0003] The double-ear cradle turntable module is a key component of the five-axis machining center. It usually refers to the two support points of the turntable, which can be physical ear-shaped structures or symmetrical layouts in design. They provide stability and rigidity to the turntable. This design enables the turntable to achieve precise positioning and rotation during the machining process, thereby machining complex three-dimensional surfaces. The advantage of the five-axis machining center is that it can machine complex shapes that are difficult to achieve with traditional three-axis machining centers, while improving machining accuracy and efficiency. This type of machine tool is widely used in aerospace, automobile manufacturing, mold manufacturing and other fields.

[0004] In the precision operation of the five-axis machining center, the supply of cutting fluid plays a vital role. It can not only effectively cool the tool during the machining process to prevent tool damage caused by overtemperature, but the fluidity of the cutting fluid can also help to smoothly transport the debris generated when machining the workpiece to the collection container. However, the existing five-axis machining center equipment has certain limitations in chip handling. They usually only have basic chip collection functions, and cannot intelligently classify and collect the chips according to the size and shape of the chips generated when machining the workpiece, such as blocky chips and filamentary chips. This single collection method may lead to the mixing of different types of chips, affecting the efficiency of subsequent processing. In addition, the recycling of cutting fluid also faces challenges when the machining center is working continuously. Although recycling cutting fluid is an environmentally friendly and economical practice, the cooling effect of cutting fluid may gradually weaken during long-term machining. If the cutting fluid fails to completely drop to the specified temperature, its cooling effect on the tool will be greatly reduced, which not only affects the machining efficiency, but may also have an adverse effect on the tool life and the machining quality of the workpiece.

[0005] Therefore, optimizing the circulation system of the cutting fluid, improving its cooling efficiency, and developing technology that can intelligently classify and collect different types of debris are crucial to improving the overall performance of the five-axis machining center. Summary of the invention

[0006] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a five-axis machining center based on a binaural cradle turntable module that is significantly different from the existing technology to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a five-axis machining center based on a binaural cradle turntable module, comprising a shell, a fragment guide column is connected between the two sides of the shell, and a debris collection structure and a mounting block are respectively provided on the two sides of the shell below the fragment guide column, a guide block is connected between the debris collection structure and the mounting block, and a rotating shaft is provided in the guide block, the outer wall of the upper end of the rotating shaft is connected with a mesh filter plate, and the lower end of the rotating shaft passes through the bottom of the shell and is connected to a driving motor through a sprocket and a chain, and a heat dissipation structure is provided on the outer wall of the rotating shaft between the bottom of the guide block and the bottom of the shell, a temperature control structure is provided between the mounting block and the bottom of the shell, and the temperature control structure is connected to a water tank, and the water tank is installed on the outer wall of the shell, a water pump is installed on the shell, one end of a three-way water pipe is connected to the water pump, and the other two ends of the three-way water pipe are correspondingly connected to two nozzles installed on both sides of the milling cutter, and a monitoring structure is connected between one end of the three-way water pipe connected to the nozzle and the shell.

[0008] Preferably, the fragment guide columns are arranged in a plurality of equal intervals, and the fragment guide columns are inclined from one end to the other.

[0009] Preferably, the debris collection structure includes a box body, an opening and an introduction plate, the box body is connected to the bottom of one side of the shell, and an opening is provided on the outer wall of the box body above the mesh filter plate, the opening is connected to the introduction plate, and the introduction plate is attached to the top of the mesh filter plate.

[0010] Preferably, the guide block is configured to be in the shape of an annular truncated cone, and a rotating shaft is provided in the middle hole region of the guide block.

[0011] Preferably, the heat dissipation structure includes a guide plate, cooling fins, paddle blades and fan blades, the guide plate is connected between the inner bottom of the shell and the bottom of the guide block, and a plurality of cooling fins are provided at the bottom of the shell between the guide plates, the rotating shaft is located on the inner and outer walls of the shell and is connected to paddle blades, and the paddle blades are at the same level as the guide plate, and the rotating shaft is located on the outer wall area outside the shell and is connected to the fan blades.

[0012] Preferably, the guide plate is arranged in a spiral shape.

[0013] Preferably, the temperature control structure includes a water channel, a heat-conducting rod, a travel switch, a wind motor, a fan disk, a blocking block, a groove, a first memory alloy spring and a return channel. A water channel is opened on the mounting block, and the water channel is connected to a water tank. The water tank is not provided with a heat-conducting rod, and the lower end of the heat-conducting rod passes through the bottom of the shell to trigger the travel switch. The travel switch is electrically connected to the wind motor, and the wind motor is installed at the bottom of the shell, and the fan disk is connected to the output end of the wind motor. The upper end of the heat-conducting rod is connected to the blocking block, and the blocking block is fitted with the groove and the end of the return channel, and a first memory alloy spring is connected between the blocking block and the groove, and the other end of the return channel passes through the guide block and is connected between the guide plates.

[0014] Preferably, the monitoring and adjusting structure includes a bifurcated heat-conducting strip, a second memory alloy spring, a through-port push plate, a box body and a through-port push plate, a bifurcated heat-conducting strip is arranged in the shell body, and one end of the bifurcated heat-conducting strip passes through the outer wall of the shell body and is connected to the second memory alloy spring, the second memory alloy spring is located in the box body, and the box body is installed on the outer wall of the shell body, and the box body is arranged on one end of the three-branch water pipe, the end of the second memory alloy spring is connected to the through-port push plate, and the through-port push plate cooperates with the through-port on it to shield and connect the connection area between the three-branch water pipe and the box body Compared with the prior art, the invention has the following beneficial effects: the five-axis machining center based on the binaural cradle turntable module realizes the efficient collection and classification of block and filamentary debris generated during the machining process through the synergistic effect of the carefully designed debris guide column, debris collection structure, rotating shaft and mesh filter plate. This design not only optimizes the debris processing process, but also facilitates the subsequent differentiated processing, and improves the machining efficiency and environmental cleanliness.

[0015] Through the setting of the heat dissipation structure and the temperature control structure, the device can drive the heat dissipation structure to operate in the process of recycling the cutting fluid, and dissipate the cutting fluid by driving the mesh filter plate to rotate through the rotating shaft. No additional power drive is required, which effectively reduces production costs and achieves energy saving and environmental protection. If the temperature of the cutting fluid has not dropped to the set value after passing through the heat dissipation structure, the temperature control structure will automatically respond, break away from the shielding of the return channel, and shield the water channel at the same time, so that the cutting fluid will generate negative pressure on the return channel under the driving force of the paddle blades and the flow of the cutting fluid in the guide plate. Under the two forces, the cutting fluid that has not been fully cooled down in the water channel will flow back to the guide plate for cooling again. Only when the cutting fluid reaches the specified cooling temperature, the temperature control structure will return to its original position, allowing the coolant to flow into the water tank for storage, and continuously supply the cutting fluid with a suitable temperature to the tool, ensuring the stability and efficiency of the machining process. This innovative design not only improves the utilization rate of the cutting fluid, but also provides reliable temperature guarantee for precision machining.

[0016] Through the setting of the monitoring and adjustment structure, when the cutting fluid falls freely and contacts the bifurcated heat-conducting strip, the heat is effectively transferred to the second memory alloy spring. Under normal temperature, the memory alloy spring will not deform, and the nozzle on one side of the tool will normally supply cutting fluid for cooling. However, when the temperature rises due to high load or long-term work, the heat is transferred to the memory alloy spring, causing it to deform, triggering the other end of the three-way water pipe to open, so that the nozzles on both sides of the tool supply cutting fluid at the same time, thereby significantly improving the cooling effect. This design not only improves the cooling efficiency, but also ensures the stability and processing accuracy of the tool under various working conditions through intelligent temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 4 For the present invention Figure 1 The enlarged structural diagram at B in the middle; Figure 5 It is a schematic diagram of the top view structure of the guide plate of the present invention; Figure 6 This is a schematic diagram of the top view of the introduction plate of the present invention; Figure 7 It is a schematic diagram of the structure of the fragment guide column of the present invention.

[0018] In the figure: 1, shell; 2, debris guide column; 3, debris collection structure; 301, box body; 302, opening; 303, introduction plate; 4, mounting block; 5, guide block; 6, rotating shaft; 7, mesh filter plate; 8, driving motor; 9, heat dissipation structure; 901, guide plate; 902, heat dissipation fin; 903, paddle blade; 904, fan blade; 10, temperature control structure; 1001, water channel; 1002, heat conduction Rod; 1003, travel switch; 1004, wind motor; 1005, fan disk; 1006, blocking block; 1007, groove; 1008, first memory alloy spring; 1009, return channel; 11, water tank; 12, water pump; 13, three-branch water pipe; 14, monitoring and adjustment structure; 1401, bifurcated heat conductive strip; 1402, second memory alloy spring; 1403, box body; 1404, through-port push plate. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-7 The present invention provides a technical solution: a five-axis machining center based on a binaural cradle turntable module, comprising a shell 1, a debris guide column 2, a debris collection structure 3, a box body 301, an opening 302, an introduction plate 303, a mounting block 4, a guide block 5, a rotating shaft 6, a mesh filter plate 7, a drive motor 8, a heat dissipation structure 9, a guide plate 901, a heat dissipation fin 902, a paddle blade 903, a fan blade 904, a temperature control structure 10, a waterway 1001, Heat-conducting rod 1002, travel switch 1003, wind motor 1004, fan disk 1005, blocking block 1006, groove 1007, first memory alloy spring 1008, return channel 1009, water tank 11, water pump 12, three-way water pipe 13, monitoring structure 14, bifurcated heat-conducting strip 1401, second memory alloy spring 1402, box body 1403, through-port push plate 1404, and the two sides of the shell 1 are connected with a fragment conduction A guide block 5 is connected between the debris collecting structure 3 and the mounting block 4, and a rotating shaft 6 is arranged in the guide block 5. The outer wall of the upper end of the rotating shaft 6 is connected with a mesh filter plate 7, and the lower end of the rotating shaft 6 passes through the bottom of the shell 1 and is connected with a driving motor 8 through a sprocket and a chain, and a heat dissipation structure 9 is arranged between the outer wall of the rotating shaft 6 located between the bottom of the guide block 5 and the bottom of the shell 1, a temperature control structure 10 is arranged between the mounting block 4 and the bottom of the shell 1, and the temperature control structure 10 is connected to a water tank 11, and the water tank 11 is installed on the outer wall of the shell 1, a water pump 12 is installed on the shell 1, and one end of a three-way water pipe 13 is connected to the water pump 12, and the other two ends of the three-way water pipe 13 are correspondingly connected to two nozzles installed on both sides of the milling cutter, and a monitoring structure 14 is connected between one end of the three-way water pipe 13 connected to the nozzle and the shell 1.

[0021] The fragment guide posts 2 are arranged in a plurality of equal intervals, and the fragment guide posts 2 are inclined from one end to the other.

[0022] The debris collection structure 3 includes a box body 301, an opening 302 and an introduction plate 303. The box body 301 is connected to the bottom of one side of the shell 1, and an opening 302 is opened on the outer wall of the box body 301 above the mesh filter plate 7. The opening 302 is connected to the introduction plate 303, and the introduction plate 303 is attached to the top of the mesh filter plate 7.

[0023] The guide block 5 is configured to be in the shape of an annular truncated cone, and a rotating shaft 6 is provided in the middle hole region of the guide block 5 .

[0024] The heat dissipation structure 9 includes a guide plate 901, heat dissipation fins 902, paddle blades 903 and fan blades 904. The guide plate 901 is connected between the inner bottom of the shell 1 and the bottom of the guide block 5, and a plurality of heat dissipation fins 902 are provided at the bottom of the shell 1 between the guide plates 901. The rotating shaft 6 is located on the inner and outer walls of the shell 1 and is connected to the paddle blades 903, and the paddle blades 903 are at the same level as the guide plate 901. The rotating shaft 6 is located on the outer wall area outside the shell 1 and is connected to the fan blades 904.

[0025] The guide plate 901 is arranged in a spiral shape.

[0026] The temperature control structure 10 includes a water channel 1001, a heat-conducting rod 1002, a travel switch 1003, a wind motor 1004, a fan disk 1005, a blocking block 1006, a groove 1007, a first memory alloy spring 1008 and a return channel 1009. The mounting block 4 is provided with a water channel 1001, and the water channel 1001 is connected to the water tank 11. The water tank 11 is not provided with a heat-conducting rod 1002, and the lower end of the heat-conducting rod 1002 passes through the bottom of the housing 1 to trigger the travel switch 1003. The travel switch 100 3 is electrically connected to the wind motor 1004, and the wind motor 1004 is installed at the bottom of the housing 1, and the output end of the wind motor 1004 is connected to the fan disk 1005, the upper end of the heat conducting rod 1002 is connected to the blocking block 1006, and the blocking block 1006 is fitted with the groove 1007 and the end of the return channel 1009, and a first memory alloy spring 1008 is connected between the blocking block 1006 and the groove 1007, and the other end of the return channel 1009 passes through the guide block 5 and is connected between the guide plates 901.

[0027] The monitoring and adjusting structure 14 includes a bifurcated thermal strip 1401, a second memory alloy spring 1402, a box body 1403 and a through-port push plate 1404. A bifurcated thermal strip 1401 is provided in the shell body 1, and one end of the bifurcated thermal strip 1401 passes through the outer wall of the shell body 1 and is connected to the second memory alloy spring 1402. The second memory alloy spring 1402 is located in the box body 1403, and the box body 1403 is installed on the outer wall of the shell body 1, and the box body 1403 is arranged on one end of the three-way water pipe 13. The end of the second memory alloy spring 1402 is connected to the through-port push plate 1404, and the through-port push plate 1404 cooperates with the through-port thereon to shield and connect the three-way water pipe 13 to the connection area of ​​the box body 1403.

[0028] Working principle: According to Figure 1As shown, firstly, the workpiece material is placed on the five-axis in the housing 1 for clamping and fixing, and the equipment is started for cutting processing. The debris waste generated during processing falls to the fragment guide column 2 under gravity along with the cutting fluid, and the block debris will fall between the fragment guide columns 2, while the filamentous debris will pass through the fragment guide columns 2 and fall onto the mesh filter plate 7. The block debris will slide to one side of the housing 1 along the inclined angle of the fragment guide column 2, so as to facilitate its collection. In the process of driving the rotating shaft 6 to rotate by the driving motor 8, the mesh filter plate 7 on the rotating shaft 6 is rotated at the same time. When passing through the introduction plate 303, the filamentous debris on the mesh filter plate 7 moves along the inclined introduction plate 303 to the opening 302 on the box body 301, and enters the box body 301 for collection; After being filtered through the fragment guide column 2 and the mesh filter plate 7, the cutting fluid falls to the guide block 5 and is guided to the inner circle of the guide plate 901. The rotation of the rotating shaft 6 drives the paddle blades 903 to rotate, and the power acts on the cutting fluid, so that the cutting fluid flows along the spirally designed guide plate 901 track. In this process, the temperature in the cutting fluid is absorbed and transferred to the outer end of the housing 1 through the heat dissipation fins 902. Under the rotation of the rotating shaft 6, the fan blades 904 are driven to rotate, generating downward wind force, driving the air to flow continuously, absorbing the heat on the heat dissipation fins 902, thereby achieving a heat dissipation effect; When the temperature of the cutting fluid has not dropped to the specified temperature after passing through the heat dissipation structure 9, the cutting fluid flows into the waterway 1001, and is transmitted to the heat-conducting rod 1002 and the first memory alloy spring 1008. The first memory alloy spring 1008 is deformed, pushing the blocking block 1006 and the heat-conducting rod 1002 downward, and the lower end of the heat-conducting rod 1002 presses the travel switch 1003, so that the wind motor 1004 starts, driving the fan disk 1005 to rotate, generating airflow to act on the heat dissipation fins 902, accelerating the heat dissipation effect, and at the same time, the first memory alloy spring 1008 pushes the blocking block 1006 downward to block the waterway 1001, and to break away from the blocking of the return channel 1009. The cutting fluid flowing in the guide plate 901 acts on the negative pressure of the return channel 1009. Under the two forces, the cutting fluid in the water channel 1001 flows back to the guide plate 901 through the return channel 1009 for secondary cooling. After the specified temperature is met, the first memory alloy spring 1008 is transmitted to reset, driving the blocking block 1006 to break away from the blockage of the water channel 1001, and the return channel 1009 is blocked. The cutting fluid can smoothly pass through the water channel 1001 into the water tank 11 for storage, which is convenient for the subsequent supply of the tool. At the same time, the reset of the blocking block 1006 drives the lower end of the heat-conducting rod 1002 to break away from the pressing of the travel switch 1003, and the wind motor 1004 stops working, reducing energy consumption; During the machining of the workpiece, the cutting fluid contacts the bifurcated heat conductive strip 1401 during its falling process, and the heat is transferred to the second memory alloy spring 1402. Under normal temperature, the second memory alloy spring 1402 will not deform, and the nozzle on one side of the tool will supply normally. When the temperature is too high, it means that the temperature of the tool is too high, and the cutting fluid of a single nozzle cannot effectively cool the cutting fluid. The second memory alloy spring 1402 deforms, pushing the opening on the opening push plate 1404 and the connection area on the box 1403 with the three-way water pipe 13 to align. The cutting fluid passes through the box 1403, and the branch is connected, so that both ends of the three-way water pipe 13 can supply the nozzles on both sides of the tool at the same time. The two nozzles can effectively cool the tool. During this process, the frequency converter on the water pump will adjust the power of the water pump accordingly to ensure the supply of cutting fluid. This is the working principle of the five-axis machining center based on the binaural cradle turntable module.

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

Claims

1. A five-axis machining center based on a binaural cradle turntable module, comprising a housing (1), characterized in that: A debris guide column (2) is connected between the two sides of the shell (1), and a debris collection structure (3) and a mounting block (4) are respectively provided on the two sides of the shell (1) below the debris guide column (2), a guide block (5) is connected between the debris collection structure (3) and the mounting block (4), and a rotating shaft (6) is provided in the guide block (5), the outer wall of the upper end of the rotating shaft (6) is connected to a mesh filter plate (7), and the lower end of the rotating shaft (6) passes through the bottom of the shell (1) and is connected to a drive motor (8) via a sprocket and a chain, and the outer wall of the rotating shaft (6) is located between the bottom of the guide block (5) and the bottom of the shell (1). A heat dissipation structure (9) is provided between the mounting block (4) and the bottom of the housing (1), a temperature control structure (10) is provided between the mounting block (4) and the bottom of the housing (1), and the temperature control structure (10) is connected to a water tank (11), and the water tank (11) is installed on the outer wall of the housing (1), a water pump (12) is installed on the housing (1), and a frequency converter is installed on the water pump (12), one end of a three-branch water pipe (13) is connected to the water pump (12), and the other two ends of the three-branch water pipe (13) are correspondingly connected to two nozzles installed on both sides of the milling cutter, and a monitoring structure (14) is connected between one end of the three-branch water pipe (13) connected to the nozzle and the housing (1).

2. The five-axis machining center based on the binaural cradle turntable module according to claim 1 is characterized in that: The fragment guide columns (2) are arranged in a plurality of equal-spaced arrangements, and the fragment guide columns (2) are designed to be inclined from one end to the other.

3. The five-axis machining center based on the binaural cradle turntable module according to claim 1 is characterized in that: The debris collection structure (3) comprises a box body (301), an opening (302) and an introduction plate (303); the box body (301) is connected to the bottom of one side of the shell (1); an opening (302) is provided on the outer wall of the box body (301) above the mesh filter plate (7); the introduction plate (303) is connected to the opening (302); and the introduction plate (303) is attached to the top of the mesh filter plate (7).

4. The five-axis machining center based on the binaural cradle turntable module according to claim 1 is characterized in that: The guide block (5) is configured in the shape of an annular truncated cone, and a rotating shaft (6) is provided in the middle hole region of the guide block (5).

5. The five-axis machining center based on the binaural cradle turntable module according to claim 4 is characterized in that: The heat dissipation structure (9) comprises a guide plate (901), heat dissipation fins (902), paddle blades (903) and fan blades (904); the guide plate (901) is connected between the inner bottom of the shell (1) and the bottom of the guide block (5); a plurality of heat dissipation fins (902) are provided between the guide plates (901) at the bottom of the shell (1); the rotating shaft (6) is located on the inner and outer walls of the shell (1) and is connected to the paddle blades (903); the paddle blades (903) and the guide plate (901) are at the same level; the rotating shaft (6) is located on the outer wall region outside the shell (1) and is connected to the fan blades (904).

6. The five-axis machining center based on the binaural cradle turntable module according to claim 5 is characterized in that: The guide plate (901) is arranged in a spiral shape.

7. The five-axis machining center based on the binaural cradle turntable module according to claim 5 is characterized in that: The temperature control structure (10) comprises a water channel (1001), a heat conducting rod (1002), a travel switch (1003), a wind motor (1004), a fan disk (1005), a blocking block (1006), a groove (1007), a first memory alloy spring (1008) and a return channel (1009). The mounting block (4) is provided with a water channel (1001), and the water channel (1001) is connected to a water tank (11). The water tank (11) is not provided with a heat conducting rod (1002), and the lower end of the heat conducting rod (1002) passes through the bottom of the housing (1) to trigger the travel switch (1003). The switch (1003) is electrically connected to the wind motor (1004), and the wind motor (1004) is installed at the bottom of the housing (1), and the output end of the wind motor (1004) is connected to a fan disk (1005), the upper end of the heat-conducting rod (1002) is connected to a blocking block (1006), and the blocking block (1006) is fitted with the end of the groove (1007) and the return channel (1009), and a first memory alloy spring (1008) is connected between the blocking block (1006) and the groove (1007), and the other end of the return channel (1009) passes through the guide block (5) and is connected between the guide plates (901).

8. The five-axis machining center based on the binaural cradle turntable module according to claim 1 is characterized in that: The monitoring and adjusting structure (14) comprises a bifurcated heat-conducting strip (1401), a second memory alloy spring (1402), a box (1403) and a through-port push plate (1404); the shell (1) is provided with a bifurcated heat-conducting strip (1401), and one end of the bifurcated heat-conducting strip (1401) passes through the outer wall of the shell (1) and is connected to the second memory alloy spring (1402); the second memory alloy spring (1402) is located in the box (1403), and the box (1403) is installed on the outer wall of the shell (1), and the box (1403) is arranged on one end of the three-branch water pipe (13); the end of the second memory alloy spring (1402) is connected to the through-port push plate (1404), and the through-port push plate (1404) cooperates with the through-port on the spring to shield and connect the connection area between the three-branch water pipe (13) and the box (1403).

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