A varnish impregnation device for transformer windings of electrical complete sets of equipment

Abstract

The present invention discloses a varnishing device for transformer windings used in electrical complete sets of equipment, including a box body. An impregnating cavity is provided inside the box body. Two first rotating rods are vertically arranged in the impregnating cavity, and the two first rotating rods are rotationally connected to the inner bottom and inner top of the impregnating cavity. Sliding blocks are sleeved on both of the two first rotating rods. A threaded layer is provided on the first rotating rod on the left side, and the threaded layer of the first rotating rod on the left side is threadedly connected to the corresponding sliding block. The sliding block on the right side is slidably connected to the corresponding first rotating rod. Connecting rods are rotationally connected to the opposite surfaces of the two sliding blocks. When the varnishing device is in use, the soaking and shaking time are controlled by the number of transformer windings in the wire frame, so as to ensure the production efficiency of the transformer windings while ensuring the varnishing quality of the transformer windings in the wire frame. Moreover, a fixed amount of primer is automatically added after each varnishing, reducing the workload of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment accessories, and particularly relates to a varnishing device for transformer windings of electrical complete sets of equipment. Background Technique

[0002] A transformer is a static electrical device used to transform AC voltage and current and transmit AC electrical energy. It realizes the transmission of electrical energy based on the principle of electromagnetic induction. During the production process of a transformer, the transformer windings are usually subjected to varnishing treatment to increase the mechanical strength of the windings and improve the short-circuit resistance of the transformer. However, the following problems still exist in the current varnishing process of transformer windings:

[0003] When the existing transformer windings are varnished, they are usually directly placed in the paint for varnishing treatment. When a large number of transformer windings are placed each time, it may occur that the transformer windings are stacked, resulting in uneven varnishing of the transformer windings. Moreover, after each varnishing is completed, the paint in the varnishing device will decrease, and the paint surface will continuously move downward, resulting in incomplete subsequent varnishing. Therefore, it is necessary to manually add paint to the varnishing tank, which will greatly increase the labor of people. Therefore, how to reasonably solve this problem is what we need to consider. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and a varnishing device for transformer windings of electrical complete sets of equipment is proposed. When the varnishing device is in use, the soaking and shaking time is controlled by the number of transformer windings in the mesh frame, so as to ensure the production efficiency of the transformer windings while ensuring the varnishing quality of the transformer windings in the mesh frame. Moreover, a fixed amount of primer will be automatically added after each varnishing, reducing the workload of the staff.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A transformer winding varnish dipping device for an electrical complete set of equipment comprises a box body, a varnish dipping chamber is arranged in the box body, two first rotating rods are vertically arranged in the varnish dipping chamber, the two first rotating rods are rotatably connected to the inner bottom and inner top of the varnish dipping chamber, sliding blocks are sleeved on the two first rotating rods, a threaded layer is arranged on the first rotating rod on the left side, the threaded layer of the first rotating rod on the left side is threadedly connected to the corresponding sliding block, the sliding block on the right side is slidably connected to the corresponding first rotating rod, the opposite surfaces of the two sliding blocks are rotatably connected to connecting rods, the adjacent ends of the two connecting rods are fixedly connected to a screen frame, and the connecting rod on the right side is connected to the corresponding first rotating rod. A first bevel gear is provided on the rod, and a second bevel gear matching the first bevel gear is provided on the first rotating rod located on the right side; a rectangular cavity is provided in the box body, and a control mechanism is provided in the rectangular cavity, and the control mechanism includes a magnetic slider arranged in the rectangular cavity, and the magnetic slider is slidably connected to the inner wall of the rectangular cavity, and a copper wire is provided in the magnetic slider, and a first conductive sheet matching the copper wire is provided on the left and right outer walls of the rectangular cavity, a second conductive sheet is provided on the left outer wall of the rectangular cavity, and a resistor plate is provided on the right outer wall of the rectangular cavity; a delay mechanism is provided in the box body, and the delay mechanism is used to control the time that the screen frame stays in the paint.

[0007] Preferably, a transverse cavity is provided in the box body, and the transverse cavity is located below the paint immersion cavity, and two second rotating rods are vertically provided in the transverse cavity, and the two second rotating rods are fixedly connected to the inner top and inner bottom of the transverse cavity, and a driving motor is provided at the lower end of the box body, and the lower end of the second rotating rod located on the left side extends to the outside and is fixedly connected to the output end of the driving motor, the lower ends of the two first rotating rods are provided with limiting grooves, and the upper ends of the two second rotating rods are provided with vertical grooves, and the two vertical grooves are provided with blocks matching the corresponding limiting grooves, and the two blocks are slidably connected to the inner walls of the corresponding vertical grooves, and an electromagnet is provided at the inner bottom of the vertical groove on the right side, and the inner bottom of the vertical groove on the left side is elastically connected to the lower end of the corresponding block by a first spring, and the block on the right side is elastically connected to the adjacent surface of the electromagnet by a fourth spring, and the two second rotating rods are transmission connected by a transmission structure.

[0008] Preferably, the transmission structure comprises transmission wheels arranged on two second rotating rods, and the two transmission wheels are connected by a transmission belt.

[0009] Preferably, a floating plate is provided in the paint dipping chamber, the floating plate is magnetic, and adjacent surfaces of the floating plate and the magnetic slider are attracted anisotropically. A guide rod is vertically provided in the paint dipping chamber, the floating plate is sleeved on the guide rod and is slidably connected to the guide rod.

[0010] Preferably, a liquid storage tank is provided above the box body. The inner bottom of the liquid storage tank is inclined. The bottom space of the liquid storage tank is communicated with the top space of the dipping chamber through an adding pipe, and a solenoid valve is provided on the adding pipe.

[0011] Preferably, the delay mechanism includes a conductive chamber and a contraction chamber provided in the box body. The contraction chamber is located on the left side of the dipping chamber, and the conductive chamber is located on the left side of the contraction chamber. A piston is provided in the contraction chamber. The piston is slidably connected to the inner wall of the contraction chamber. The lower end of the piston is elastically connected to the inner bottom of the contraction chamber through a second spring. A moving block is provided in the conductive chamber. The moving block has conductivity. The upper left space of the conductive chamber is communicated with the outside through a thin pipe. The upper left space of the conductive chamber is communicated with the upper right space of the contraction chamber on the right side of the piston through a thick pipe. Limiting blocks are provided on the left and right inner walls of the conductive chamber. The two limiting blocks are located below the moving block. Third conductive sheets are provided on the outer walls on the left and right sides of the conductive chamber.

[0012] Preferably, a vertical chamber is provided in the box body. A conductive plate is provided in the vertical chamber. The conductive plate is slidably connected to the inner wall of the vertical chamber. Both the conductive plate and the sliding block on the right side have magnetism. The adjacent surfaces of the conductive plate and the sliding block on the right side attract each other with opposite polarities. Two first conductive blocks and second conductive blocks are symmetrically provided on the outer walls on the left and right sides of the vertical chamber.

[0013] Preferably, horizontal grooves are provided on both the left and right sides of the magnetic sliding block. Damping blocks are provided in both the horizontal grooves. The two damping blocks are slidably connected to the inner walls of the corresponding horizontal grooves. The opposite surfaces of the two damping blocks are elastically connected to the inner walls on the side away from the groove openings of the corresponding horizontal grooves through third springs. The two limiting blocks have conductivity.

[0014] The present invention has the following beneficial effects:

[0015] 1. Compared with the prior art, during the process of dipping the transformer winding with paint, the device can adjust the dipping time according to the number of transformer windings, so that when there are more transformer windings, while ensuring the dipping effect of the transformer winding, the production efficiency of the transformer winding is improved;

[0016] 2. Compared with the prior art, after each dipping is completed, the dipping chamber will be automatically replenished, so there is no need to manually replenish the paint, which greatly reduces the labor intensity of the staff;

[0017] 3. Compared with the prior art, during the process of rotating and dipping the transformer winding with paint, at this time, the damping blocks will be pressed against the left and right inner walls of the rectangular chamber, thus avoiding the situation that the shaking of the paint surface affects the dipping time. Description of the Drawings

[0018] Figure 1 Schematic structural diagram of a transformer winding impregnating device for electrical complete sets of equipment proposed by the present invention;

[0019] Figure 2 is Figure 1 Enlarged structural diagram at position A in ;

[0020] Figure 3 is Figure 1 Enlarged structural diagram at position B in ;

[0021] Figure 4 is Figure 1 Enlarged structural diagram at position C in ;

[0022] Figure 5 Schematic structural diagram of Embodiment 2 of the present invention;

[0023] Figure 6 is Figure 5 Enlarged structural diagram at position D in .

[0024] In the figure: 1 box body, 2 liquid storage tank, 3 impregnating cavity, 4 first rotating rod, 5 sliding block, 6 mesh frame, 7 connecting rod, 8 first bevel gear, 9 adding pipe, 10 vertical cavity, 11 conductive plate, 12 first conductive block, 13 second conductive block, 14 second bevel gear, 15 driving motor, 16 horizontal cavity, 17 transmission structure, 18 moving block, 19 rectangular cavity, 20 first conductive sheet, 21 second conductive sheet, 22 magnetic slider, 23 resistance plate, 24 second rotating rod, 25 vertical groove, 26 first spring, 27 clamping block, 28 limiting groove, 29 electromagnet, 30 conductive cavity, 31 contraction cavity, 32 piston, 33 second spring, 34 thick pipe, 35 third conductive sheet, 36 horizontal groove, 37 damping block, 38 third spring, 39 fourth spring. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Embodiment 1

[0027] Refer to Figures 1-4, a varnish dipping device for electrical complete equipment transformers, including a box body 1. There is a varnish dipping chamber 3 inside the box body 1. Two first rotating rods 4 are vertically arranged in the varnish dipping chamber 3. The two first rotating rods 4 are rotationally connected to the inner bottom and inner top of the varnish dipping chamber 3. Sliding blocks 5 are sleeved on both of the two first rotating rods 4. A threaded layer is provided on the first rotating rod 4 on the left side. The threaded layer on the first rotating rod 4 on the left side is similar to the threaded layer of a reciprocating lead screw. The threaded layer of the first rotating rod 4 on the left side is threadedly connected to the corresponding sliding block 5. The sliding block 5 on the right side is slidably connected to the corresponding first rotating rod 4. Connecting rods 7 are rotationally connected to the opposite surfaces of the two sliding blocks 5. The adjacent ends of the two connecting rods 7 are fixedly connected together to form a wire mesh frame 6. A folding door (not shown) is provided on the wire mesh frame 6. A first bevel gear 8 is provided on the connecting rod 7 on the right side. A second bevel gear 14 that is matched with the first bevel gear 8 is provided on the first rotating rod 4 on the right side. When the wire mesh frame 6 moves down to the limit position, the first bevel gear 8 meshes with the second bevel gear 14 at this time.

[0028] Among them, a rectangular chamber 19 is provided inside the box body 1. A control mechanism is provided in the rectangular chamber 19. The control mechanism includes a magnetic slider 22 arranged in the rectangular chamber 19. The magnetic slider 22 is slidably connected to the inner wall of the rectangular chamber 19. A copper wire is provided inside the magnetic slider 22. First conductive sheets 20 that are matched with the copper wire are provided on the outer walls on the left and right sides of the rectangular chamber 19. A second conductive sheet 21 is provided on the outer wall on the left side of the rectangular chamber 19. A resistance plate 23 is provided on the outer wall on the right side of the rectangular chamber 19. A floating plate is provided in the varnish dipping chamber 3. The floating plate has magnetism. The adjacent surfaces of the floating plate and the magnetic slider 22 attract each other with opposite polarities. A guide rod is vertically arranged in the varnish dipping chamber 3. The floating plate is sleeved on the guide rod and is slidably connected to the guide rod.

[0029] A delay mechanism is provided inside the box body 1. The delay mechanism is used to control the residence time of the screen frame 6 in the paint. The delay mechanism includes a conductive cavity 30 and a contraction cavity 31 provided inside the box body 1. The contraction cavity 31 is located on the left side of the paint dipping cavity 3, and the conductive cavity 30 is located on the left side of the contraction cavity 31. A piston 32 is provided inside the contraction cavity 31. The piston 32 is slidably connected to the inner wall of the contraction cavity 31. The lower end of the piston 32 is elastically connected to the inner bottom of the contraction cavity 31 by a second spring 33. A moving block 18 is provided inside the conductive cavity 30. The moving block 18 has conductivity. The left side of the upper space of the conductive cavity 30 where the moving block 18 is located communicates with the outside through a thin tube. The left side of the upper space of the conductive cavity 30 where the moving block 18 is located communicates with the right side of the upper space of the contraction cavity 31 where the piston 32 is located through a thick tube 34. The diameter of the thick tube 34 is ten times that of the thin tube. When the second spring 33 contracts and drives the piston 32 to move downward, the outside gas cannot immediately enter the upper space of the conductive cavity 30, resulting in the rapid upward movement and then slow downward movement of the moving block 18. Limit blocks are provided on the left and right inner walls of the conductive cavity 30. The two limit blocks limit the initial position of the moving block 18. The two limit blocks are located below the moving block 18. Third conductive sheets 35 are provided on the outer walls on the left and right sides of the conductive cavity 30. An external power supply can be set. The external power supply, the third conductive sheet 35 on the left side, the moving block 18, the third conductive sheet 35 on the right side, the first spring 26, and the electromagnet 29 form a circuit through wires.

[0030] Among them, a transverse cavity 16 is provided in the box body 1, and the transverse cavity 16 is located below the paint dipping cavity 3. Two second rotating rods 24 are vertically provided in the transverse cavity 16, and the two second rotating rods 24 are fixedly connected to the inner top and inner bottom of the transverse cavity 16. A driving motor 15 is provided at the lower end of the box body 1. The lower end of the second rotating rod 24 on the left side extends to the outside and is fixedly connected to the output end of the driving motor 15. The lower ends of the two first rotating rods 4 are provided with limiting grooves 28, and the upper ends of the two second rotating rods 24 are provided with vertical grooves 25. The two vertical grooves 25 are provided with blocks 27 that match the corresponding limiting grooves 28. The two blocks 27 are slidably connected to the inner walls of the corresponding vertical grooves 25. An electromagnet 29 is provided at the inner bottom of the vertical groove 25 on the right side, and the inner bottom of the vertical groove 25 on the left side is elastically connected to the lower end of the corresponding block 27 through a first spring 26. The block 27 on the right side and the adjacent surface of the electromagnet 29 The two second rotating rods 24 are elastically connected by the fourth spring 39, and the two second rotating rods 24 are connected by transmission structure 17. The transmission structure 17 includes a transmission wheel arranged on the two second rotating rods 24, and the two transmission wheels are connected by transmission belt transmission. In the initial state, the block 27 located on the left is located in the corresponding limit groove 28, and the block 27 located on the right is not located in the corresponding limit groove 28. At this time, the first rotating rod 4 located on the left is fixed to the corresponding second rotating rod 24, and the two limit grooves 28 are both rectangular grooves. The two blocks 27 are both rectangular blocks that match the limit grooves 28. After the spring is energized, according to the electromagnetic effect, each turn of the spring will generate a magnetic field, and after judging the direction of the magnetic field by the direction of the current, the magnetic field generated between every two adjacent turns of the spring is opposite in direction, that is, an attraction will be generated between every two adjacent turns of the spring, that is, after power is turned on, the entire spring will shrink.

[0031] Among them, a liquid storage tank 2 is provided above the box body 1, and the inner bottom of the liquid storage tank 2 is an inclined surface. The bottom space of the liquid storage tank 2 is connected with the top space of the paint immersion chamber 3 through an adding pipe 9. An electromagnetic valve is provided on the adding pipe 9. An external power supply, a first conductive sheet 20 on the left, a copper wire, a first conductive sheet 20 on the right, a first conductive block 12 on the left, a conductive plate 11, a first conductive block 12 on the right and the electromagnetic valve form a loop through wires.

[0032] Among them, a vertical cavity 10 is provided in the box 1, and a conductive plate 11 is provided in the vertical cavity 10. The conductive plate 11 is slidably connected to the inner wall of the vertical cavity 10. The conductive plate 11 and the sliding block 5 on the right are both magnetic, and the adjacent surfaces of the conductive plate 11 and the sliding block 5 on the right are attracted to each other anisotropically. Two first conductive blocks 12 and second conductive blocks 13 are symmetrically provided on the left and right outer walls of the vertical cavity 10. An external power supply, the conductive block 13 on the left, the conductive plate 11, the conductive block 13 on the right, the first conductive sheet 20 on the left, the copper wire, the resistor plate 23 and the second spring 33 form a loop through a wire, and the upper end of the resistor plate 23 is electrically connected to the circuit through a wire. As the magnetic slider 22 moves up a greater distance, the resistance value of the resistor plate 23 connected to the circuit becomes smaller, thereby making the second spring 33 contract a greater distance, and at this time, the moving block 18 moves up a greater distance, thereby making the transformer winding stay in the paint for a longer time.

[0033] The functional principle of the present invention can be explained through the following operation mode: open the sliding door on the front side of the varnish dipping chamber 3 and the folding door on the screen frame 6, put the transformer winding to be dipped into the screen frame 6, then close the folding door and the sliding door, start the drive motor 15, because in the initial state, the electromagnet 29 and the first spring 26 are both in the power-off state, at this time, the card block 27 on the left side is located in the corresponding limit groove 28, and the card block 27 on the right side is not located in the corresponding limit groove 28, because the two second rotating rods 24 are connected by the transmission structure 17, at this time, the start of the drive motor 15 will drive the two second rotating rods 24 to rotate, and the two second rotating rods 24 drive the first rotating rod 4 on the left side to rotate, and the first rotating rod 4 on the right side does not rotate and only plays a guiding role;

[0034] The rotation of the first rotating rod 4 on the left side will drive the two sliding blocks 5 to move downward, thereby driving the screen frame 6 to move downward, so as to perform paint dipping treatment on the transformer winding. As the two sliding blocks 5 move downward, the conductive plate 11 will be driven downward at the same time. When the screen frame 6 drives the transformer winding into the paint, the liquid level of the paint will move upward, thereby driving the floating plate to move upward. The floating plate moving upward will drive the magnetic slider 22 to move upward, so that the copper wire contacts the second conductive sheet 21 and the resistor plate 23. When the two sliding blocks 5 drive the screen frame 6 to move downward to the extreme position, the conductive plate 11 contacts the second conductive block 13, and the second spring 33 is energized. At the same time, the first bevel gear 8 and the second bevel gear 14 are meshed.

[0035] After the second spring 33 is electrified, according to the electromagnetic effect, a magnetic field will be generated in each turn of the second spring 33, and the magnetic field directions generated between every two adjacent turns of the second spring 33 are opposite, that is, an attractive force will be generated between every two adjacent turns of the second spring 33. That is, after being electrified, the entire second spring 33 will contract and move downward instantaneously, so that the gas in the space above the conductive cavity 30 will enter the contraction cavity 31 through the thick pipe 34. Since the diameter of the thick pipe 34 is ten times that of the thin pipe, the outside gas cannot immediately enter the space above the conductive cavity 30 through the thin pipe, so that the moving block 18 moves upward. When the moving block 18 moves upward, it will contact the two third conductive sheets 35. At this time, the first spring 26 and the electromagnet 29 on the left are electrified;

[0036] After the first spring 26 is electrified, it will contract, so that the clamping block 27 on the left will disengage from the limiting groove 28. After the electromagnet 29 is electrified, the clamping block 27 on the right will enter the limiting groove 28. At this time, the rotation of the two second rotating rods 24 will drive the first rotating rod 4 on the right to rotate. Since the first bevel gear 8 and the second bevel gear 14 are in a meshed state at this time, the rotation of the first rotating rod 4 on the right will drive the connecting rod 7 on the right to rotate, thereby driving the wire frame 6 and the transformer winding inside it to rotate, so that the transformer winding can roll in the paint, enabling the transformer winding to be better impregnated with paint;

[0037] When the moving block 18 moves upward to a certain distance, it will move downward under the action of its own gravity. When the moving block 18 moves downward to its original position, at this time the moving block 18 disengages from the two third conductive sheets 35. At this time, the first spring 26 and the electromagnet 29 are both powered off, so that the clamping block 27 on the left returns to the corresponding limiting groove 28, and at the same time the clamping block 27 on the right disengages from the corresponding limiting groove 28. At this time, the two second rotating rods 24 rotate to drive the first rotating rod 4 on the left to rotate, and the first rotating rod 4 on the right stops rotating. At this time, the rotation of the first rotating rod 4 on the left will drive the two sliding blocks 5 to move upward, thereby driving the wire frame 6 to move upward, so that the wire frame 6 is separated from the paint.

[0038] It is worth mentioning that the more the number of transformer windings in the wire frame 6, the more the total volume entering the paint, so that the distance that the liquid level of the paint drives the floating plate to move upward is more, the smaller the resistance value of the resistance plate 23 connected to the circuit, so that the current passing through the second spring 33 is larger, the longer the piston 32 moves downward, the longer the moving block 18 moves upward, and thus the impregnation time and disturbance time of the transformer winding in the paint will also increase, so as to ensure that each transformer winding can be evenly impregnated with paint and ensure the impregnation quality of the transformer winding;

[0039] At this time, after the transformer winding is impregnated with paint, the paint in the impregnation chamber 3 will decrease, causing the liquid level of the paint to drop, the floating plate to drop, the magnetic slider 22 to drop, and the copper wire to contact the two first conductive sheets 20. When the wire frame 6 returns to its original position, the driving motor 15 is turned off at this time. At this time, the conductive plate 11 contacts the two first conductive blocks 12. At this time, the solenoid valve on the supply pipe 9 is energized and opened, so that the paint in the liquid storage tank 2 can fall into the impregnation chamber 3 for replenishment, thus eliminating the need for manual replenishment of paint into the impregnation chamber 3 and greatly reducing the labor of people.

[0040] Compared with the prior art, during the process of impregnating the transformer winding, this device can adjust the impregnation time according to the number of transformer windings, ensuring the impregnation effect of the transformer winding and improving the production efficiency of the transformer winding when there are more transformer windings.

[0041] After each impregnation is completed, it will be automatically replenished into the impregnation chamber 3, thus eliminating the need for manual replenishment of paint and greatly reducing the workload of the staff.

[0042] Embodiment 2

[0043] Refer to Figures 5-6 , the difference between this embodiment and Embodiment 1 is that horizontal grooves 36 are provided on both the left and right sides of the magnetic slider 22, damping blocks 37 are provided in both horizontal grooves 36, the opposite surfaces of the two damping blocks 37 are relatively rough, the two damping blocks 37 are slidably connected to the inner walls of the corresponding horizontal grooves 36, and the opposite surfaces of the two damping blocks 37 and the inner walls of the corresponding horizontal grooves 36 away from the groove openings are elastically connected by third springs 38. The two limit blocks are conductive, and an external power supply, a control switch, the limit block on the left, the moving block 18, the limit block on the right, and the two third springs 38 form a closed circuit through wires.

[0044] In this embodiment, since the two third springs 38 are in a de-energized state initially, at this time, the two damping blocks 37 tightly press against the inner walls on the left and right sides of the rectangular cavity 19. When the driving motor 15 is energized, the two third springs 38 contract when energized, driving the two damping blocks 37 to move relatively. At this time, the two damping blocks 37 no longer contact the inner walls on the left and right sides of the rectangular cavity 19. When the wire frame 6 rotates in the paint, since the moving block 18 moves upward and disengages from the two limit blocks, the two third springs 38 are de-energized again. At this time, under the elastic action of the two third springs 38, the two damping blocks 37 move away from each other, causing the two damping blocks 37 to press against the inner walls on the left and right sides of the rectangular cavity 19 again. Thus, during the rotation of the wire frame 6, when the shaking of the paint surface drives the floating plate to shake up and down, the magnetic slider 22 will not shake up and down, avoiding affecting the impregnation time.

[0045] Compared with the prior art, during the process of rotating and dipping the transformer winding, at this time, the damping block 37 will be pressed against the inner walls on the left and right sides of the rectangular cavity 19, thereby avoiding the situation that the shaking of the paint surface affects the dipping time.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A transformer winding impregnating device for electrical complete sets of equipment, comprising a box body (1), characterized in that: The box body (1) is provided with a paint dipping chamber (3), and two first rotating rods (4) are vertically provided in the paint dipping chamber (3). The two first rotating rods (4) are rotatably connected to the inner bottom and inner top of the paint dipping chamber (3). The two first rotating rods (4) are sleeved with sliding blocks (5). The first rotating rod (4) located on the left side is provided with a threaded layer. The threaded layer of the first rotating rod (4) located on the left side is threadedly connected to the corresponding sliding block (5). The sliding block (5) located on the right side is slidably connected to the corresponding first rotating rod (4). The opposite surfaces of the two sliding blocks (5) are rotatably connected to connecting rods (7). The adjacent ends of the two connecting rods (7) are fixedly connected to a screen frame (6). The connecting rod (7) located on the right side is provided with a first bevel gear (8). The first rotating rod (4) located on the right side is provided with a second bevel gear (14) matching the first bevel gear (8). A transverse cavity (16) is provided in the box body (1), and the transverse cavity (16) is located below the paint dipping cavity (3). Two second rotating rods (24) are vertically provided in the transverse cavity (16), and the two second rotating rods (24) are fixedly connected to the inner top and inner bottom of the transverse cavity (16). A driving motor (15) is provided at the lower end of the box body (1), and the lower end of the second rotating rod (24) located on the left side extends to the outside and is fixedly connected to the output end of the driving motor (15). The lower ends of the two first rotating rods (4) are provided with limiting grooves (28), and the upper ends of the two second rotating rods (24) are provided with vertical grooves (25 ), each of the two vertical slots (25) is provided with a block (27) matched with the corresponding limit slot (28), and each of the two block (27) is slidably connected to the inner wall of the corresponding vertical slot (25), an electromagnet (29) is provided at the inner bottom of the vertical slot (25) on the right side, the inner bottom of the vertical slot (25) on the left side is elastically connected to the lower end of the corresponding block (27) via a first spring (26), the block (27) on the right side is elastically connected to the adjacent surface of the electromagnet (29) via a fourth spring (39), and the two second rotating rods (24) are transmission-connected via a transmission structure (17); A rectangular cavity (19) is provided in the box body (1), a control mechanism is provided in the rectangular cavity (19), the control mechanism comprises a magnetic slider (22) arranged in the rectangular cavity (19), the magnetic slider (22) is slidably connected to the inner wall of the rectangular cavity (19), a copper wire is provided in the magnetic slider (22), a first conductive sheet (20) matching the copper wire is provided on the left and right outer walls of the rectangular cavity (19), a second conductive sheet (21) is provided on the left outer wall of the rectangular cavity (19), and a resistor plate (23) is provided on the right outer wall of the rectangular cavity (19); A floating plate is provided in the paint dipping chamber (3), the floating plate is magnetic, and adjacent surfaces of the floating plate and the magnetic slider (22) are attracted anisotropically, a guide rod is vertically provided in the paint dipping chamber (3), the floating plate is sleeved on the guide rod and is slidably connected to the guide rod; A delay mechanism is provided inside the box body (1). The delay mechanism is used to control the residence time of the screen frame (6) in the paint. The delay mechanism includes a conductive cavity (30) and a contraction cavity (31) provided inside the box body (1). The contraction cavity (31) is located on the left side of the paint dipping cavity (3), and the conductive cavity (30) is located on the left side of the contraction cavity (31). A piston (32) is provided inside the contraction cavity (31). The piston (32) is slidably connected to the inner wall of the contraction cavity (31). The lower end of the piston (32) is elastically connected to the inner bottom of the contraction cavity (31) through a second spring (33). A moving block (18) is provided inside the conductive cavity (30). The moving block (18) has conductivity. The left side of the upper space of the conductive cavity (30) where the moving block (18) is located communicates with the outside through a thin tube. The left side of the upper space of the conductive cavity (30) where the moving block (18) is located communicates with the right side of the upper space of the contraction cavity (31) where the piston (32) is located through a thick tube (34). Limiting blocks are provided on the left and right inner walls of the conductive cavity (30). The two limiting blocks are located below the moving block (18). Third conductive sheets (35) are provided on the outer walls on the left and right sides of the conductive cavity (30). A vertical cavity (10) is provided inside the box body (1). A conductive plate (11) is provided inside the vertical cavity (10). The conductive plate (11) is slidably connected to the inner wall of the vertical cavity (10). Both the conductive plate (11) and the sliding block (5) on the right side have magnetism. The adjacent surfaces of the conductive plate (11) and the sliding block (5) on the right side attract each other with opposite polarities. Two first conductive blocks (12) and second conductive blocks (13) are symmetrically provided on the outer walls on the left and right sides of the vertical cavity (10). Horizontal grooves (36) are provided on both the left and right sides of the magnetic sliding block (22). Damping blocks (37) are provided in both the horizontal grooves (36). The two damping blocks (37) are slidably connected to the inner walls of the corresponding horizontal grooves (36). The opposite surfaces of the two damping blocks (37) are elastically connected to the inner walls on the side away from the groove openings of the corresponding horizontal grooves (36) through third springs (38). The two limiting blocks have conductivity. The second conductive sheet (21) and the resistance plate (23) are located above the first conductive sheet (20). The transmission structure (17) includes transmission wheels provided on two second rotating rods (24). The two transmission wheels are connected by a transmission belt. A liquid storage tank (2) is provided above the box body (1). The inner bottom of the liquid storage tank (2) is inclined. The bottom space of the liquid storage tank (2) communicates with the top space of the paint dipping cavity (3) through a filling pipe (9). An electromagnetic valve is provided on the filling pipe (9).

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