Preheating device of diaphragm coating machine

Abstract

The utility model discloses a preheating device of a diaphragm coating machine, which relates to the technical field of diaphragm coating machines and comprises a base, four corners of the lower surface of the base are fixedly connected with supporting legs, the front side and the rear side of the upper surface of the base are fixedly connected with supports, and the front side surface of the right part of each support is fixedly connected with a motor. An output shaft, in the backward direction, of the motor is fixedly connected with a rotating shaft, the other end of the rotating shaft is fixedly connected with belt wheels, and the outer side faces of the two belt wheels are movably connected with a transmission belt. By arranging the preheating pipe, the diaphragm can be preheated in advance, the unsatisfactory coating effect of the diaphragm is avoided, by arranging the roller, continuous double-face preheating can be conducted on the diaphragm, the preheating effect of the diaphragm is better, the coating quality is improved, by arranging the temperature control box, the preheating temperature of the diaphragm can be controlled, and the coating efficiency is improved. And the preheating temperature is in a proper interval, so that the diaphragm is better preheated, and the coating effect of the diaphragm is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm coating machines, in particular to a diaphragm coating machine preheating device. Background Art

[0002] The diaphragm refers to a layer of diaphragm material between the positive and negative electrodes of the battery. It is a very critical part of the battery and has a direct impact on the safety and cost of the battery. Its main functions are to isolate the positive and negative electrodes and prevent the electrons in the battery from passing freely, allowing the ions in the electrolyte to pass freely between the positive and negative electrodes. The diaphragm coating machine is mainly used to coat the surface of the battery diaphragm with polymer explosion-proof materials. The diaphragm substrate is preheated after unwinding, and then goes through the processes of traction, coating, drying and winding. During the coating and drying process, the basic surface temperature of the diaphragm will change greatly, which will cause defects on the surface of the coated diaphragm. For this reason, the substrate is preheated to avoid this defect.

[0003] A battery diaphragm coating machine with a preheating function is disclosed in the Chinese utility model patent application disclosure specification CN218517057U. Although the utility model can achieve cleaning of the film strip while effectively reducing the dust content in the air through the negative pressure effect to meet the use needs of personnel, when the utility model preheats the diaphragm, the diaphragm preheating rate must be consistent with the coating rate, and the coating rate can be up to 250m / min, which will lead to poor preheating effect and uneven preheating, and will cause quality problems of the diaphragm in the subsequent coating process. Therefore, there are problems of poor preheating effect and uneven preheating. In addition, when the utility model preheats the diaphragm, the preheating temperature range cannot be controlled. If the preheating temperature is too low, the preheating effect will not be achieved. If the temperature is too high, the diaphragm will melt. Therefore, there is a problem of not being able to control the preheating temperature range. In summary, the utility model has the problems of poor preheating effect, uneven preheating and not being able to control the preheating temperature range. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a preheating device for a diaphragm coating machine, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: comprising a base, the four corners of the bottom of the base are fixedly connected with support legs, and the front and rear sides of the top of the base are fixedly connected with brackets;

[0008] The right front side of the bracket is fixedly connected to a motor, the output shaft of the motor in the rearward direction is fixedly connected to a rotating shaft, the other end of the rotating shaft is fixedly connected to a pulley, the outer sides of the two pulleys are movably connected to a transmission belt, the inner side of the bracket is fixedly connected to a pipe rack, and the inner side of the pipe rack is fixedly connected to a preheating pipe;

[0009] A temperature sensing tube is fixedly connected to the middle side surface of the rear portion of the bracket, a graphite rod is fixedly connected to the top surface of the inner wall of the temperature sensing tube, an electrode is fixedly connected to the bottom surface of the inner wall of the temperature sensing tube, a temperature control box is fixedly connected to the middle of the lower left side of the base, a bracket tube is fixedly connected to the middle of the front front of the top surface of the inner wall of the temperature control box, a coil is fixedly connected to the inner wall of the bracket tube, a magnetic rod is movably connected to the inner side surface of the coil, a second sliding piece is fixedly connected to the rear side surface of the magnetic rod, a second resistor is movably connected to the right side surface of the lower part of the second sliding piece, the right side surface of the second resistor is fixedly connected to the temperature control box, a first resistor is fixedly connected to the bottom surface of the middle inner wall of the temperature control box, the top of the first resistor is movably connected to the first sliding piece, a paddle is fixedly connected to the left side of the first sliding piece, and the upper and lower sides of the paddle are movably connected to the temperature control box.

[0010] Optionally, the outer side surfaces at both ends of the rotating shaft are movably connected to the bracket, and the outer side surface of the rotating shaft is movably connected to a roller.

[0011] Optionally, a diaphragm is movably connected to the outer side surface of the drum, and the front and rear side surfaces of the drum are movably connected to the bracket.

[0012] Optionally, an observation plate is fixedly connected to the front inner side surface of the temperature sensing tube, scale lines are arranged in front of the observation plate, and a heat conducting plate is fixedly connected to the rear inner side surface of the temperature sensing tube.

[0013] Optionally, a spring is fixedly connected to the front side of the magnetic rod, and the other end of the spring is fixedly connected to the temperature control box.

[0014] Optionally, the electrode is connected in series with the power supply, the top end of the graphite rod is connected in series with the coil and the power supply, the second slider is connected in series with the power supply, the first slider of the second resistor is connected in series, and the front end of the first resistor is connected in series with the power supply and the preheating tube.

[0015] (III) Beneficial effects

[0016] The utility model provides a preheating device for a diaphragm coating machine, which has the following beneficial effects:

[0017] 1. The preheating device of the diaphragm coating machine can preheat the diaphragm in advance by setting a preheating tube to avoid unsatisfactory coating effect of the diaphragm. By setting a roller, the diaphragm can be preheated on both sides continuously, so that the preheating effect of the diaphragm is better and the coating quality is improved.

[0018] 2. The preheating device of the diaphragm coating machine can control the preheating temperature of the diaphragm by setting a temperature control box, so that the preheating temperature is within a moderate range, which can better preheat the diaphragm and increase the coating effect of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a rear-view stereoscopic structural schematic diagram of the utility model;

[0021] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of the left side cross-sectional structure of the temperature sensing tube of the utility model;

[0023] Figure 5 This is a rear cross-sectional structural schematic diagram of the utility model;

[0024] Figure 6 For this utility model Figure 5 The enlarged structural diagram at B in the middle;

[0025] Figure 7 This is a schematic diagram of the left side structure of the temperature control box of the utility model;

[0026] Figure 8 It is a left-side structural schematic diagram of the electric motor of the utility model.

[0027] In the figure: 1. preheating tube; 2. bracket; 3. diaphragm; 4. roller; 5. supporting leg; 6. base; 7. motor; 8. pipe rack; 9. temperature sensing tube; 10. transmission belt; 11. pulley; 12. temperature control box; 13. paddle; 14. scale line; 15. observation board; 16. rotating shaft; 17. magnetic rod; 18. coil; 19. first resistor; 20. first slide; 21. bracket tube; 22. graphite rod; 23. electrode; 24. heat conducting plate; 25. spring; 26. second slide; 27. second resistor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Example 1

[0030] See also Figures 1 to 8The utility model provides a technical solution: a preheating device for a diaphragm coating machine, comprising a base 6, the four corners of the bottom of the base 6 are fixedly connected with support legs 5, and the front and rear sides of the top of the base 6 are fixedly connected with brackets 2;

[0031] The right front side of the bracket 2 is fixedly connected to the motor 7, the output shaft of the motor 7 in the backward direction is fixedly connected to the rotating shaft 16, the outer side surfaces of both ends of the rotating shaft 16 are movably connected to the bracket 2, the outer side surface of the rotating shaft 16 is movably connected to the roller 4, the outer side surface of the roller 4 is movably connected to the diaphragm 3, the front and rear sides of the roller 4 are movably connected to the bracket 2, the other end of the rotating shaft 16 is fixedly connected to the pulley 11, the outer sides of the two pulleys 11 are movably connected to the transmission belt 10, the inner side of the bracket 2 is fixedly connected to the pipe rack 8, and the inner side of the pipe rack 8 is fixedly connected to the preheating tube 1. By arranging the preheating tube 1, the diaphragm 3 can be preheated in advance to avoid unsatisfactory coating effect of the diaphragm 3, and by arranging the roller 4, the diaphragm 3 can be continuously preheated on both sides, so that the preheating effect of the diaphragm 3 is better and the coating quality is improved.

[0032] When in use, the preheating tube 1 is energized to heat the preheating tube 1 to an appropriate temperature, and the motor 7 is started to rotate the shaft 16, which drives the pulley 11 to rotate. The pulley 11 drives another pulley 11 to rotate through the transmission belt 10, and then drives the leftmost roller 4 to rotate through the shaft 16. The motor 7 drives the rightmost roller 4 to rotate through the shaft 16. The rotation of the leftmost roller 4 and the rightmost roller 4 causes the diaphragm 3 to move. Multiple rollers 4 and preheating tubes 1 are provided to avoid insufficient preheating of the diaphragm 3 due to too fast a coating speed. At the same time, the diaphragm 3 can be preheated on both sides to make the preheating of the diaphragm 3 more uniform.

[0033] Example 2

[0034] See also Figures 1 to 8 The utility model provides a technical solution: a preheating device for a diaphragm coating machine, comprising a base 6, the four corners of the bottom of the base 6 are fixedly connected with support legs 5, and the front and rear sides of the top of the base 6 are fixedly connected with brackets 2;

[0035] A temperature sensing tube 9 is fixedly connected to the middle side of the rear part of the bracket 2, an observation plate 15 is fixedly connected to the front inner side of the temperature sensing tube 9, a scale line 14 is arranged in front of the observation plate 15, a heat conducting plate 24 is fixedly connected to the rear inner side of the temperature sensing tube 9, a graphite rod 22 is fixedly connected to the inner wall top surface of the temperature sensing tube 9, an electrode 23 is fixedly connected to the inner wall bottom surface of the temperature sensing tube 9, a temperature control box 12 is fixedly connected to the middle of the lower left side of the base 6, a bracket tube 21 is fixedly connected to the middle of the front front of the inner wall top of the temperature control box 12, a coil 18 is fixedly connected to the inner wall of the bracket tube 21, a magnetic rod 17 is movably connected to the inner side of the coil 18, a spring 25 is fixedly connected to the front side of the magnetic rod 17, the other end of the spring 25 is fixedly connected to the temperature control box 12, a second slide 26 is fixedly connected to the rear side of the magnetic rod 17, and the lower right side of the second slide 26 A second resistor 27 is movably connected to the surface, the right side of the second resistor 27 is fixedly connected to the temperature control box 12, the middle bottom surface of the inner wall of the temperature control box 12 is fixedly connected to the first resistor 19, the top of the first resistor 19 is movably connected to the first slide 20, the left side of the first slide 20 is fixedly connected to the paddle 13, the upper and lower side surfaces of the paddle 13 are movably connected to the temperature control box 12, the electrode 23 is connected in series with the power supply, the top of the graphite rod 22 is connected in series with the coil 18 and the power supply, the second slide 26 is connected in series with the power supply, the first slide 20 of the second resistor 27 is connected in series, and the front end of the first resistor 19 is connected in series with the power supply and the preheating tube 1. By setting the temperature control box 12, the preheating temperature of the diaphragm 3 can be controlled so that the preheating temperature is within a moderate range, the diaphragm 3 is better preheated, and the coating effect of the diaphragm 3 is increased.

[0036] When in use, mercury is filled in the temperature sensing tube 9. When the preheating tube 1 starts to be powered on for preheating, the temperature rises, and the mercury is heated and expanded through the heat conducting plate 24, and the mercury contacts the graphite rod 22. The higher the temperature, the larger the volume, the greater the contact area between the mercury and the graphite rod 22, the shorter the length of the graphite rod 22 exposed above the mercury, the smaller the resistance of the graphite rod 22, and the larger the current. At this time, the stronger the magnetism of the coil 18, the front end of the coil 18 is the N pole, the rear end is the S pole, and the front end of the magnetic rod 17 is the N pole. The stronger the magnetism of the coil 18, the more it will repel the magnetic rod 17 from moving to the right, thereby stretching the spring 25, so that the second slide 26 slides backward on the second resistor 27, the resistance of the second resistor 27 becomes larger, and the resistance of the first resistor 19 is not changed, so that the current becomes smaller, and then the temperature of the preheating tube 1 is reduced. The lower the temperature, the smaller the volume of mercury, and the mercury and The smaller the contact area of ​​the graphite rod 22, the longer the length of the graphite rod 22 exposed above the mercury, the greater the resistance of the graphite rod 22, and the smaller the current. At this time, the magnetism of the coil 18 is weaker, and the repulsion of the coil 18 to the magnetic rod 17 is reduced. The spring 25 undergoes elastic deformation and contraction, so that the second slider 26 slides forward on the second resistor 27, and the resistance of the second resistor 27 becomes smaller, so that the current becomes larger, thereby increasing the temperature of the preheating tube 1. When the material of the diaphragm 3 is replaced, different materials will have different suitable preheating temperatures. The paddle 13 is slid forward to make the first slider 20 slide forward on the first resistor 19, so that the resistance value of the first resistor 19 is reduced, and the preheating temperature is increased. The paddle 13 is slid backward to make the first slider 20 slide forward on the first resistor 19, so that the resistance value of the first resistor 19 is reduced, and the preheating temperature is reduced.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preheating device for a diaphragm coating machine, comprising a base (6), characterized in that: The four corners of the bottom of the base (6) are fixedly connected to support legs (5), and the front and rear sides of the top of the base (6) are fixedly connected to brackets (2); The right front side surface of the bracket (2) is fixedly connected to a motor (7); the output shaft of the motor (7) in the rearward direction is fixedly connected to a rotating shaft (16); the other end of the rotating shaft (16) is fixedly connected to a pulley (11); the outer sides of the two pulleys (11) are movably connected to a transmission belt (10); the inner side surface of the bracket (2) is fixedly connected to a pipe rack (8); and the inner side surface of the pipe rack (8) is fixedly connected to a preheating pipe (1); A temperature sensing tube (9) is fixedly connected to the middle side of the rear part of the bracket (2), a graphite rod (22) is fixedly connected to the top surface of the inner wall of the temperature sensing tube (9), an electrode (23) is fixedly connected to the bottom surface of the inner wall of the temperature sensing tube (9), a temperature control box (12) is fixedly connected to the middle of the lower left side of the base (6), a bracket tube (21) is fixedly connected to the middle of the front front of the top surface of the inner wall of the temperature control box (12), a coil (18) is fixedly connected to the inner wall of the bracket tube (21), and a magnetic rod (17) is movably connected to the inner side of the coil (18). A second slide (26) is fixedly connected to the rear side surface of the second slide (26), a second resistor (27) is movably connected to the lower right side surface of the second slide (26), the right side surface of the second resistor (27) is fixedly connected to the temperature control box (12), a first resistor (19) is fixedly connected to the middle bottom surface of the inner wall of the temperature control box (12), the top surface of the first resistor (19) is movably connected to the first slide (20), a paddle (13) is fixedly connected to the left side surface of the first slide (20), and the upper and lower side surfaces of the paddle (13) are movably connected to the temperature control box (12).

2. A preheating device for a diaphragm coating machine according to claim 1, characterized in that: The outer side surfaces at both ends of the rotating shaft (16) are movably connected to the bracket (2), and the outer side surface of the rotating shaft (16) is movably connected to the roller (4).

3. A preheating device for a diaphragm coating machine according to claim 2, characterized in that: The outer side surface of the drum (4) is movably connected to a diaphragm (3), and the front and rear side surfaces of the drum (4) are movably connected to the bracket (2).

4. The preheating device for a diaphragm coating machine according to claim 1, characterized in that: An observation plate (15) is fixedly connected to the front inner side surface of the temperature sensing tube (9), a scale line (14) is provided in front of the observation plate (15), and a heat conducting plate (24) is fixedly connected to the rear inner side surface of the temperature sensing tube (9).

5. The preheating device for a diaphragm coating machine according to claim 1, characterized in that: A spring (25) is fixedly connected to the front side of the magnetic rod (17), and the other end of the spring (25) is fixedly connected to the temperature control box (12).

6. The preheating device for a diaphragm coating machine according to claim 1, characterized in that: The electrode (23) is connected in series with a power source, the top end of the graphite rod (22) is connected in series with the coil (18) and the power source, the second slide (26) is connected in series with the power source, the first slide (20) of the second resistor (27) is connected in series, and the front end of the first resistor (19) is connected in series with the power source and the preheating tube (1).

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