A machine tool welding apparatus

Abstract

The present application relates to welding equipment technical field, especially mechanical processing welding equipment, including bottom plate, the bottom plate upper surface is fixedly installed with multiple straight rods, the straight rod is slidably sleeved with welding table;The bottom plate upper surface is fixedly installed with mounting block, two The first threaded rod is rotatably installed between the mounting blocks, wherein one The mounting block surface is fixedly installed with a drive motor, the output shaft of the drive motor is fixedly connected with the first threaded rod, the first threaded rod is symmetrically screwed with a sliding block, the sliding block upper surface is fixedly installed with a first sliding rod, the welding table lower surface is fixedly installed with a mounting rod, the mounting rod surface is provided with a sliding port, the first threaded rod, two The first sliding rod and the sliding port are matched, the operator can quickly adjust the welding table to move to the appropriate height position, the height of the welding table is no longer constant, and the practicability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a machining welding equipment. Background Technology

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. During the machining process, metal plates often need to be welded by welding equipment.

[0003] In existing machining and welding equipment, the height of the welding operation platform is generally constant, and operators cannot quickly adjust the operation platform to a suitable height according to their own situation, resulting in poor practicality. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the prior art: the height of the welding operation platform in existing machining and welding equipment is generally constant, and operators cannot quickly adjust the operation platform to a suitable position and height according to their own situation, resulting in poor practicality. Therefore, this invention proposes a machining and welding equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A machining and welding device includes a base plate, on the upper surface of which multiple straight rods are vertically fixedly installed. A welding table is slidably sleeved on the straight rods. A welding robotic arm is fixedly installed on the back of the welding table. The upper surface of the welding table is provided with a positioning component for positioning the metal plate to be welded.

[0007] Mounting blocks are symmetrically fixedly mounted on the upper surface of the base plate. A first threaded rod with opposite thread directions at its left and right ends is horizontally rotatably mounted between two mounting blocks. A drive motor is fixedly mounted on the surface of one of the mounting blocks. The output shaft of the drive motor is fixedly connected to the first threaded rod. A slider is symmetrically threaded onto the first threaded rod. An L-shaped first sliding rod is fixedly mounted on the upper surface of the slider. A V-shaped mounting rod is fixedly mounted on the lower surface of the welding table. The mounting rod has a V-shaped sliding opening on its surface. The ends of the two first sliding rods away from the slider pass through the sliding opening, and their surfaces slide in contact with the wall of the sliding opening.

[0008] Preferably, the positioning component includes a rectangular plate fixedly installed on the upper surface of the welding table, two positioning plates, and a driving component. The rectangular plate has a rectangular opening on its surface, and a round rod is horizontally fixedly installed inside the rectangular opening. Both rectangular plates are slidably sleeved on the round rod. The driving component is used to provide a driving force for the two rectangular plates to move laterally relative to each other.

[0009] Preferably, the drive assembly includes a second threaded rod, a slide block threaded onto the second threaded rod, two L-shaped second slide rods, and two inclined rods respectively fixedly installed on the side walls of two rectangular plates. A mounting block is fixedly installed on the lower surface of the welding table. The second threaded rod is horizontally rotatably mounted on the surface of the mounting block. The two second slide rods are respectively fixedly installed on the left and right side walls of the slide block. An inclined opening is provided on the surface of the inclined rod. A through opening is symmetrically provided on the upper surface of the welding table. The ends of the two second slide rods away from the slide block pass through the two through openings and the two inclined openings respectively. The surfaces of the second slide rods slide in contact with the walls of the inclined openings.

[0010] Preferably, the upper surface of the welding platform is provided with a limiting component, which is used to limit the vertical movement of the metal plate to be welded.

[0011] Preferably, the limiting component includes a third threaded rod, a sliding plate threaded onto the third threaded rod, and an adsorption component. A rectangular groove is horizontally formed on the upper surface of the welding table. The third threaded rod is horizontally rotatably installed in the rectangular groove, with one end extending out of the welding table. The adsorption component is fixedly installed on the surface of the sliding plate and is used to adsorb the metal plate to be welded.

[0012] Preferably, the adsorption component includes a hollow rod fixedly installed on the surface of the slide plate and a suction cup fixedly installed on one end of the hollow rod. The surface of the slide plate has a rotating opening that communicates with the inside of the hollow rod. A desorption component is provided in the rotating opening, and the desorption component is used to release the adsorption between the suction cup and the metal plate.

[0013] Preferably, the desorption component includes a rotating shaft and an arc-shaped sealing plate that are rotatably installed in the rotating port. An air port is opened on the surface of the hollow rod. One end of the rotating shaft located inside the hollow rod is fixedly connected to the sealing plate through a connecting rod. The sealing plate is used to block the air port. A rotating block is fixedly installed on the other end of the rotating shaft located outside the hollow rod. A torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are fixedly connected to the rotating block and the sliding plate, respectively.

[0014] Preferably, two water collection tanks are fixedly installed on the upper surface of the welding platform. The water collection tanks are filled with cooling water. The upper surface of the welding platform is provided with a cooling component, which is used to spray the cooling water in the water collection tanks in a mist and apply it to the surface of the welded metal plate.

[0015] Preferably, the cooling assembly includes two hollow cylinders, each with one end closed, and two piston rods that are slidably and sealed inside the two hollow cylinders. A water inlet pipe is fixedly installed at the closed end of each hollow cylinder. One end of each of the two water inlet pipes is fixedly connected to the surface of two water collection tanks and is used to connect the hollow cylinders and the water collection tanks. A mist nozzle is fixedly installed on the upper surface of each hollow cylinder through a water outlet pipe. A one-way valve is provided inside both the water inlet pipe and the water outlet pipe. One end of each of the two piston rods is fixedly connected to the surface of two rectangular plates.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the cooperation between the first threaded rod, the two first sliding rods and the sliding mouth, the operator can quickly adjust the welding table to a suitable height position. The height of the welding table is no longer constant, which improves the practicality of the device.

[0018] 2. The positioning component can quickly fix metal plates of different sizes, which is highly practical. The steps to unfix it are also very simple, which improves the efficiency of locking and unlocking metal plates.

[0019] 3. The positioning component can position the metal plate horizontally, while the limiting component can position the metal plate horizontally and vertically, and also adsorb the metal plate, thereby limiting the vertical movement of the metal plate and improving the fixing effect of the metal plate.

[0020] 4. During the process of the two positioning plates approaching each other and positioning the metal plate, the cooling water in the two water collection tanks will be automatically drawn into the two hollow cylinders. When the welding of the metal plate is completed, as the two positioning plates move away from each other, the cooling water in the two hollow cylinders will be sprayed out from the two mist nozzles and fall onto the weld of the metal plate to cool the weld. Attached Figure Description

[0021] Figure 1 This is a frontal perspective view of a machining and welding equipment proposed in this invention.

[0022] Figure 2 This is a top-view three-dimensional structural diagram of a machining and welding equipment proposed in this invention;

[0023] Figure 3 This is a bottom-view three-dimensional structural diagram of a machining and welding equipment proposed in this invention;

[0024] Figure 4 This is a partial three-dimensional structural diagram of the sliding plate in a machining and welding equipment proposed in this invention;

[0025] Figure 5 for Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 6 for Figure 2 Enlarged structural diagram at point B;

[0027] Figure 7 for Figure 2 Enlarged structural diagram at point C;

[0028] Figure 8 for Figure 3 Enlarged structural diagram at point D.

[0029] In the diagram: 1. Base plate, 2. Straight rod, 3. Welding table, 4. Welding robotic arm, 5. First threaded rod, 6. Drive motor, 7. Slider, 8. First sliding rod, 9. Mounting rod, 10. Sliding port, 11. Rectangular plate, 12. Positioning plate, 13. Round rod, 14. Second threaded rod, 15. Sliding seat, 16. Second sliding rod, 17. Diagonal rod, 18. Diagonal opening, 19. Through port, 20. Third threaded rod, 21. Sliding plate, 22. Hollow rod, 23. Suction cup, 24. Rotating shaft, 25. Sealing plate, 26. Air port, 27. Torsion spring, 28. Water collection tank, 29. Hollow cylinder, 30. Piston rod, 31. Water inlet pipe, 32. Water outlet pipe, 33. Mist nozzle. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figures 1-8 A mechanical processing and welding equipment includes a base plate 1, with multiple straight rods 2 vertically fixedly installed on the upper surface of the base plate 1, a welding table 3 slidably sleeved on the straight rods 2, a welding robotic arm 4 fixedly installed on the back of the welding table 3, and a positioning component for positioning the metal plate to be welded on the upper surface of the welding table 3.

[0032] Mounting blocks are symmetrically fixedly mounted on the upper surface of the base plate 1. A first threaded rod 5 with opposite thread directions at both ends is horizontally rotatably mounted between the two mounting blocks. A drive motor 6 is fixedly mounted on the surface of one of the mounting blocks. The output shaft of the drive motor 6 is fixedly connected to the first threaded rod 5. A slider 7 is symmetrically threaded onto the first threaded rod 5. The lower surface of the slider 7 slides in contact with the upper surface of the base plate 1. An L-shaped first sliding rod 8 is fixedly mounted on the upper surface of the slider 7. A V-shaped mounting rod 9 is fixedly mounted on the lower surface of the welding table 3. A V-shaped sliding opening 10 is opened on the surface of the mounting rod 9. The ends of the two first sliding rods 8 away from the slider 7 pass through the sliding opening 10, and their surfaces slide in contact with the opening wall of the sliding opening 10.

[0033] Start the drive motor 6 to control the rotation of the first threaded rod 5. At this time, the two sliders 7, which are symmetrically threaded onto the first threaded rod 5, will move laterally relative to each other. The first sliding rod 8, which is fixedly connected to the upper surface of the slider 7, will also move together within the sliding opening 10. When the two sliders 7 approach each other, the two first sliding rods 8 will also approach each other. Under the pressure of the surface of the first sliding rod 8 and the wall of the sliding opening 10, the welding table 3 will move vertically upward. When the two sliders 7 move away from each other, the two first sliding rods 8 will also move away from each other. Under the pressure of the first sliding rod 8 and the wall of the sliding opening 10, the welding table 3 will move vertically downward. That is, the height of the welding table 3 is no longer constant. The operator can quickly adjust the welding table 3 to a suitable height position, which improves the practicality of the device.

[0034] The positioning assembly includes a rectangular plate 11 fixedly mounted on the upper surface of the welding table 3, two positioning plates 12, and a driving assembly. The rectangular plate 11 has a rectangular opening on its surface, and a round rod 13 is horizontally fixedly mounted inside the rectangular opening. Both rectangular plates 11 are slidably fitted onto the round rod 13. The driving assembly provides the driving force for the two rectangular plates 11 to move laterally relative to each other. The driving assembly includes a second threaded rod 14, a slide block 15 threaded onto the second threaded rod 14, two L-shaped second slide rods 16, and two positioning plates respectively fixedly mounted on the side walls of the two rectangular plates 11. The upper surface of the inclined rod 17 and the slide block 15 slides in contact with the lower surface of the welding table 3. A mounting block is fixedly installed on the lower surface of the welding table 3. The second threaded rod 14 is horizontally rotated and installed on the surface of the mounting block. Two second sliding rods 16 are fixedly installed on the left and right side walls of the slide block 15 respectively. An inclined opening 18 is opened on the surface of the inclined rod 17. A through opening 19 is symmetrically opened on the upper surface of the welding table 3. The ends of the two second sliding rods 16 away from the slide block 15 pass through the two through openings 19 respectively and pass through the two inclined openings 18 respectively. The surface of the sliding rod 16 slides in contact with the opening wall of the inclined opening 18.

[0035] After the height of the welding table 3 is adjusted, the metal plate to be welded is placed on the upper surface of the welding table 3 and positioned between the two positioning plates 12. Then, by rotating the second threaded rod 14, the slide block 15 threaded onto the second threaded rod 14 is controlled to move laterally with the two second slide rods 16. During the movement of the two second slide rods 16, the two positioning plates 12 will move laterally relative to each other under the pressure of the surfaces of the two second slide rods 16 and the walls of the two inclined openings 18.

[0036] When the two second sliding rods 16 move away from the rectangular plate 11, the two positioning plates 12 will move laterally closer to each other under the pressure of the second sliding rods 16 and the inclined opening 18 until both positioning plates 12 are firmly against the metal plate, thus completing the pressing and positioning of the metal plate. When the two second sliding rods 16 move closer to the rectangular plate 11, the two positioning plates 12 will move laterally away from each other under the pressure of the second sliding rods 16 and the inclined opening 18, thus quickly releasing the pressing and positioning of the metal plate by the two positioning plates 12.

[0037] The upper surface of the welding table 3 is provided with a limiting component, which is used to limit the vertical movement of the metal plate to be welded. The limiting component includes a third threaded rod 20, a sliding plate 21 threaded onto the third threaded rod 20, and an adsorption component. A rectangular groove is horizontally opened on the upper surface of the welding table 3. The lower surface of the sliding plate 21 slides in contact with the bottom wall of the rectangular groove. The third threaded rod 20 is horizontally rotatably installed in the rectangular groove, and one end extends out of the welding table 3. The adsorption component is fixedly installed on the surface of the sliding plate 21. The adsorption component is used to adsorb the metal plate to be welded. The adsorption component includes a hollow rod 22 fixedly installed on the surface of the sliding plate 21 and a suction cup 23 fixedly installed on one end of the hollow rod 22. A rotating port is opened on the surface of the sliding plate 21, which is connected to the inside of the hollow rod 22. A desorption component is provided in the rotating port, which is used to release the adsorption between the suction cup 23 and the metal plate.

[0038] The desorption component includes a rotating shaft 24 and an arc-shaped sealing plate 25, which are rotatably installed in the rotating port. An air port 26 is opened on the surface of the hollow rod 22. One end of the rotating shaft 24 located inside the hollow rod 22 is fixedly connected to the sealing plate 25 through a connecting rod. The sealing plate 25 is used to block the air port 26. A rotating block is fixedly installed on the other end of the rotating shaft 24 located outside the hollow rod 22. A torsion spring 27 is sleeved on the rotating shaft 24. The two ends of the torsion spring 27 are fixedly connected to the rotating block and the sliding plate 21, respectively.

[0039] Before positioning the metal plate, first place the metal plate on the upper surface of the welding table 3, and then place it between the two positioning plates 12. Control the metal plate to move to one side and abut against the surface of the rectangular plate 11. Then, control the two positioning plates 12 to move closer to each other until both positioning plates 12 are firmly abutting against the metal plate. This completes the horizontal positioning of the metal plate. At this time, by rotating the third threaded rod 20, control the sliding plate 21 threaded onto the third threaded rod 20 to move laterally along with the hollow rod 22 and the suction cup 23 until the suction cup 23 is firmly abutting against the metal plate. After contact, the metal plate will be positioned between the two positioning plates 12, the rectangular plate 11, and the suction cup 23. The suction cup 23 and the rectangular plate 11 can position the metal plate horizontally and vertically. When the suction cup 23 is tightly pressed against the metal plate, the suction cup 23 will deform under the pressure. The gas inside the suction cup 23 will then slip out from the gap between the suction cup 23 and the metal plate, thus completing the adsorption of the metal plate. This can restrict the vertical movement of the metal plate and lock the third threaded rod 20, improving the positioning effect of the metal plate.

[0040] When it is necessary to release the suction cup 23 from the metal plate, simply rotate the shaft 24 to control the sealing plate 25 to rotate until the sealing plate 25 no longer blocks the air port 26. At this time, the gas in the outside will enter the hollow rod 22 from the air port 26, thereby automatically releasing the suction cup 23 from the metal plate. After releasing the shaft 24, the shaft 24 will quickly rotate and reset the sealing plate 25 under the elastic potential energy of the torsion spring 27, and the sealing plate 25 will cover the air port 26 again.

[0041] Two water collection tanks 28 are fixedly installed on the upper surface of the welding table 3. The water collection tanks 28 are filled with cooling water. A cooling assembly is provided on the upper surface of the welding table 3. The cooling assembly is used to spray the cooling water in the water collection tanks 28 in a mist and apply it to the surface of the welded metal plate. The cooling assembly includes two hollow cylinders 29 with one end closed and two piston rods 30 that are respectively slidably and sealed inside the two hollow cylinders 29. A water inlet pipe 31 is fixedly installed at the closed end of the hollow cylinder 29. One end of the two water inlet pipes 31 is... The two water collection tanks 28 are fixedly connected to each other and are used to connect the hollow cylinder 29 and the water collection tanks 28. The upper surface of the hollow cylinder 29 is fixedly installed with a mist nozzle 33 through the water outlet pipe 32. Both the water inlet pipe 31 and the water outlet pipe 32 are equipped with one-way valves. The one-way valve in the water inlet pipe 31 is directed from the water collection tank 28 to the hollow cylinder 29, and the one-way valve in the water outlet pipe 32 is directed from the hollow cylinder 29 to the mist nozzle 33. One end of each of the two piston rods 30 is fixedly connected to the surface of the two rectangular plates 11.

[0042] When the two positioning plates 12 move, they will move along with the two piston rods 30. Before the metal plate is welded, the two positioning plates 12 need to move closer to each other to position the metal plate. The piston rods 30 will move outward from the hollow cylinder 29, increasing the volume and decreasing the pressure inside the hollow cylinder 29. Cooling water in the two water collection tanks 28 will enter the two hollow cylinders 29 through the two inlet pipes 31. After the metal plate is welded, the two positioning plates 12 need to be moved away from each other to release the positioning of the metal plate. During this process, the piston rods 30 will move inward from the hollow cylinder 29, decreasing the volume and increasing the pressure inside the hollow cylinder 29. Cooling water in the hollow cylinder 29 will then enter the mist nozzle 33 through the outlet pipe 32 and spray out in a mist. The mist of cooling water will fall on the weld of the metal plate to cool the weld.

[0043] In this invention, the drive motor 6 is started to control the rotation of the first threaded rod 5. At this time, the two sliders 7, which are symmetrically threaded onto the first threaded rod 5, will move laterally relative to each other. The first sliding rod 8, which is fixedly connected to the upper surface of the slider 7, will also move together within the sliding opening 10. When the two sliders 7 approach each other, the two first sliding rods 8 will also approach each other. Under the pressure of the surface of the first sliding rod 8 and the wall of the sliding opening 10, the welding table 3 will move vertically upward. When the two sliders 7 move away from each other, the two first sliding rods 8 will also move away from each other. Under the pressure of the first sliding rod 8 and the wall of the sliding opening 10, the welding table 3 will move vertically downward. That is, the height of the welding table 3 is no longer constant. The operator can quickly adjust the welding table 3 to a suitable height position, which improves the practicality of the device.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A machining and welding device, comprising a base plate (1), characterized in that, The base plate (1) has multiple straight rods (2) vertically fixedly installed on its upper surface. A welding table (3) is slidably sleeved on the straight rods (2). A welding robot arm (4) is fixedly installed on the back of the welding table (3). The upper surface of the welding table (3) is provided with a positioning component for positioning the metal plate to be welded. The base plate (1) is symmetrically fixedly mounted with mounting blocks. Two mounting blocks are horizontally rotatably mounted with first threaded rods (5) with opposite thread directions at their left and right ends. One of the mounting blocks is fixedly mounted with a drive motor (6). The output shaft of the drive motor (6) is fixedly connected to the first threaded rod (5). A slider (7) is symmetrically threaded onto the first threaded rod (5). An L-shaped first slide rod (8) is fixedly mounted on the upper surface of the slider (7). A V-shaped mounting rod (9) is fixedly mounted on the lower surface of the welding table (3). A V-shaped sliding opening (10) is opened on the surface of the mounting rod (9). The ends of the two first slide rods (8) away from the slider (7) pass through the sliding opening (10), and their surfaces slide in contact with the wall of the sliding opening (10).

2. The machining and welding equipment according to claim 1, characterized in that, The positioning assembly includes a rectangular plate (11) fixedly installed on the upper surface of the welding table (3), two positioning plates (12) and a driving assembly. The rectangular plate (11) has a rectangular opening on its surface, and a round rod (13) is fixedly installed horizontally inside the rectangular opening. Both rectangular plates (11) are slidably sleeved on the round rod (13). The driving assembly is used to provide a driving force for the two rectangular plates (11) to move laterally relative to each other.

3. The machining and welding equipment according to claim 2, characterized in that, The drive assembly includes a second threaded rod (14), a slide block (15) threaded onto the second threaded rod (14), two L-shaped second slide rods (16), and two inclined rods (17) fixedly installed on the side walls of two rectangular plates (11). A mounting block is fixedly installed on the lower surface of the welding table (3). The second threaded rod (14) is horizontally rotatably mounted on the surface of the mounting block. The two second slide rods (16) are fixedly installed on the left and right side walls of the slide block (15). An inclined opening (18) is opened on the surface of the inclined rod (17). A through opening (19) is symmetrically opened on the upper surface of the welding table (3). The ends of the two second slide rods (16) away from the slide block (15) pass through the two through openings (19) and the two inclined openings (18) respectively. The surface of the second slide rod (16) slides in contact with the opening wall of the inclined opening (18).

4. The machining and welding equipment according to claim 2, characterized in that, The upper surface of the welding table (3) is provided with a limiting component, which is used to limit the vertical movement of the metal plate to be welded.

5. The machining and welding equipment according to claim 4, characterized in that, The limiting component includes a third threaded rod (20), a sliding plate (21) threaded onto the third threaded rod (20), and an adsorption component. A rectangular groove is horizontally opened on the upper surface of the welding table (3). The third threaded rod (20) is horizontally rotatably installed in the rectangular groove, with one end extending out of the welding table (3). The adsorption component is fixedly installed on the surface of the sliding plate (21) and is used to adsorb the metal plate to be welded.

6. The machining and welding equipment according to claim 5, characterized in that, The adsorption component includes a hollow rod (22) fixedly installed on the surface of the slide plate (21) and a suction cup (23) fixedly installed on one end of the hollow rod (22). The surface of the slide plate (21) is provided with a rotating port that communicates with the inside of the hollow rod (22). A desorption component is provided in the rotating port. The desorption component is used to release the adsorption between the suction cup (23) and the metal plate.

7. The machining and welding equipment according to claim 6, characterized in that, The desorption component includes a rotating shaft (24) and an arc-shaped sealing plate (25) that are rotatably installed in the rotating port. The hollow rod (22) has an air port (26) on its surface. One end of the rotating shaft (24) located inside the hollow rod (22) is fixedly connected to the sealing plate (25) via a connecting rod. The sealing plate (25) is used to block the air port (26). A rotating block is fixedly installed on one end of the rotating shaft (24) located outside the hollow rod (22). A torsion spring (27) is sleeved on the rotating shaft (24). The two ends of the torsion spring (27) are fixedly connected to the rotating block and the sliding plate (21) respectively.

8. The machining and welding equipment according to claim 7, characterized in that, Two water collection tanks (28) are fixedly installed on the upper surface of the welding table (3). The water collection tanks (28) are filled with cooling water. The upper surface of the welding table (3) is provided with a cooling component. The cooling component is used to spray the cooling water in the water collection tanks (28) in a mist and apply it to the surface of the welded metal plate.

9. A machining and welding equipment according to claim 8, characterized in that, The cooling assembly includes two hollow cylinders (29) with one end closed and two piston rods (30) that are slidably and sealed inside the two hollow cylinders (29). The closed end of the hollow cylinder (29) is fixedly installed with a water inlet pipe (31). One end of the two water inlet pipes (31) is fixedly connected to the surface of two water collection tanks (28) and is used to connect the hollow cylinder (29) and the water collection tanks (28). A mist nozzle (33) is fixedly installed on the upper surface of the hollow cylinder (29) through a water outlet pipe (32). One-way valves are provided in both the water inlet pipe (31) and the water outlet pipe (32). One end of the two piston rods (30) is fixedly connected to the surface of two rectangular plates (11).

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