A coating device for Teflon tape processing

Abstract

The present invention relates to the field of adhesive tape processing technology, and in particular to a coating device for Teflon adhesive tape processing, comprising a glue box, a controller, a first motor, and a stirring rod. The glue box contains silicone adhesive, the controller is mounted on the top front of the glue box, the first motor is mounted on the bottom front of the glue box, and the first motor is electrically connected to the controller. The output end of the first motor is mounted on the front end of the stirring rod, and the stirring rod is driven by the first motor to stir the silicone adhesive. The coating device for Teflon adhesive tape processing also includes a coating mechanism, a pump body, a dilution mechanism, and a feeding mechanism. The coating pre-treatment of Teflon coils not only eliminates Teflon static electricity, but also reduces Teflon humidity, improves the adsorption of the adhesive to the Teflon coil, prevents the generation of bubbles in the adhesive, and improves the coating quality of the Teflon coil. The device has a quantitative diluent replenishment function to prevent the adhesive fluidity from decreasing and affecting the coating efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive tape processing, in particular to a coating device for processing Teflon adhesive tape. Background Art

[0002] Teflon tape, also known as Teflon tape, Teflon adhesive tape, or Teflon adhesive tape, is a high-temperature resistant tape made by first coating glass fiber with Teflon emulsion and drying it. The tape is then coated with silicone adhesive for a second time. The first application is spray-coated, and the second application is roller-coated. The adhesive used in the second application is silicone adhesive, which is applied to the surface of the Teflon coil by a roller brush. The excess adhesive is then scraped off with a scraper. After curing, the tape is ready. Before coating, Teflon coil is affected by environmental humidity and friction. The humidity of Teflon coil is high and excess charge will be generated on the surface. When directly coated, humidity will cause bubbles in the silicone adhesive, and static electricity will directly affect the adhesion of the glue, resulting in poor coating quality. In addition, the organic matter in the silicone adhesive will gradually evaporate, causing the fluidity of the adhesive to gradually deteriorate. As the fluidity decreases, the coating efficiency will become lower. For this reason, there is an urgent need for a coating device for Teflon tape processing that can dilute the adhesive. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art that Teflon coils cannot be pre-treated before coating, the coating quality is poor, the adhesive cannot be diluted, and the coating efficiency is low, the present invention provides a coating device for Teflon tape processing.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a coating device for Teflon tape processing, comprising a glue box, a controller, a first motor and a stirring rod, wherein silicone adhesive is stored in the glue box, the controller is installed on the top front of the glue box, the first motor is installed on the bottom front of the glue box, and the first motor is electrically connected to the controller, the output end of the first motor is installed on the front end of the stirring rod, and the stirring rod is driven by the first motor to stir the silicone adhesive, the coating device for Teflon tape processing also includes a coating mechanism, a pump body, a dilution mechanism and a feeding mechanism, the coating mechanism is installed in the middle of the upper surface of the glue box in the front-to-back direction; the pump body is installed on the left side wall of the glue box, and the pump body is electrically connected to the controller, the liquid inlet of the pump body is connected to the bottom end of the left side wall of the glue box by a pipe, and a pipe is installed at the other end of the pump body, and the pipe outlet is located directly above the coating mechanism; the dilution mechanism is installed at the left end of the upper surface of the glue box in the front-to-back direction; the feeding mechanism is installed at the right end of the upper surface of the glue box in the front-to-back direction.

[0005] Preferably, the coating mechanism includes a first support plate, a glue groove, a second motor and a glue roller. There are two first support plates, which are respectively installed at the front and rear ends of the middle part of the upper surface of the glue box; the glue groove is installed at the top inner side of the first support plate along the front-to-back direction; the second motor is installed at the bottom front side of the first support plate located on the front side, and the second motor is electrically connected to the controller; one end of the glue roller is installed at the output end of the second motor, and the other end is connected to the front end of the first support plate located on the rear side through a bearing.

[0006] Preferably, the dilution mechanism includes a diluent tank, a third motor, a roller and a guide groove. The diluent tank is installed at the left end of the upper surface of the glue box in the front-to-back direction, and is used to store the diluent added to the silicone adhesive; the third motor is installed at the bottom end of the front of the diluent tank, and the third motor is electrically connected to the controller; one end of the roller is installed at the output end of the third motor, and the other end is connected to the rear side of the inner cavity of the diluent tank through a bearing; there are several guide grooves, which are opened on the outer wall of the roller from front to back along the circumferential direction.

[0007] Preferably, the maximum spacing between the guide grooves is smaller than the length of the inner cavity of the glue box.

[0008] Preferably, the unloading mechanism includes a second support plate, a first guide roller, a second guide roller, a scraper, a protrusion, a drying component and a timing start component. There are two second support plates, which are respectively installed at the front and rear ends of the right side of the upper surface of the glue box; the first guide roller and the second guide roller are respectively rotatably installed at the left and right ends of the inner side of the second support plate, and the Teflon coil is transmitted by the rolling of the first guide roller and the second guide roller; the scraper is obliquely installed in the middle of the inner side of the second support plate to scrape off excess silicone adhesive on the surface of the Teflon coil; the protrusion is installed at the front end of the first guide roller; the drying component is installed at the left end of the upper surface of the second support plate along the front-to-back direction; the timing start component is installed at the left end of the front side of the second support plate located at the front side.

[0009] Preferably, the two sides of the protrusion are shaped as inclined surfaces.

[0010] Preferably, the drying assembly includes a drying box, a bracket, an air knife, an air supply unit and a third guide roller. The drying box is installed at the left end of the upper surface of the second support plate in the front-to-back direction; there are two brackets, which are respectively installed at the front and rear ends of the upper surface of the drying box; the air knife is vertically installed on the front of the drying box; the air supply unit is installed on the right side wall of the drying box in the front-to-back direction, and the front end of the air supply unit is connected to the outer wall of the air knife through an air pipe; the third guide roller is rotatably installed at the bottom of the inner cavity of the drying box, and the Teflon coil is conducted through the third guide roller.

[0011] Preferably, the air supply unit includes a heating cylinder, an air hood, a heater, a negative ion generator, a fan and a filter plate. The heating cylinder is installed on the right side wall of the drying box in the front-to-back direction; the air hood is installed at the front end of the heating cylinder, and the air hood is connected to the air knife through an air pipe; the heater, negative ion generator, fan and filter plate are installed in the inner cavity of the heating cylinder from front to back, and the negative ion generator and the fan are electrically connected to the controller. When the fan rotates, it draws external air into the heating cylinder, filters the gas through the filter plate, and the negative ion generator generates negative oxygen ions, which move with the gas, and the heater can heat the gas.

[0012] Preferably, the timing start assembly includes a dust cover, a counter, a first contact, a rocker arm, a tension spring, a roller and a second contact, the dust cover is installed at the left end of the front face of the second support plate located on the front side; the counter is installed on the front face of the dust cover, and the counter is electrically connected to the controller; the first contact is vertically installed at the right end of the top of the inner cavity of the dust cover, and the first contact is externally connected to a power supply; the rocker arm is installed on the top of the inner cavity of the dust cover so as to be able to swing left and right through a pin shaft; one end of the tension spring is clamped on the top of the inner cavity of the dust cover, and the other end is clamped on the left side wall of the rocker arm, and the rocker arm is pulled to swing left under the tension of the tension spring; the roller is rotatably installed at the bottom end of the rocker arm, and the roller is in contact with the first guide roller; the second contact is installed on the right side wall of the rocker arm, and the second contact is electrically connected to the counter.

[0013] Preferably, the second contact point and the first contact point are on the same horizontal line.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can suck gas into the heating cylinder through the fan, and the negative oxygen ion generator generates negative oxygen ions. The negative oxygen ions can move with the air flow. The heater heats the gas and then transports it to the wind knife. The wind knife releases hot air into the drying box. The heat dries the Teflon coil. The negative oxygen ions neutralize the surface charge of the Teflon coil, and the Teflon coil is treated before coating. It can not only eliminate the static electricity of Teflon, but also reduce the humidity of Teflon, improve the adsorption of the adhesive and Teflon coil, avoid the generation of bubbles in the adhesive, and improve the coating quality of the Teflon coil.

[0016] 2. The present invention drives the protrusion extrusion roller by rotating the first guide roller, allowing the rocker arm to swing repeatedly to the right. When the second contact contacts the first contact, an electrical signal is sent to the counter, and the counter counts. When the number of counts reaches the counter setting value, the counter sends an electrical signal to the controller. The controller starts the first motor and the third motor. The third motor drives the roller to rotate a certain angle, and the guide groove carries the diluent to move. The diluent drips evenly into the glue box. The first motor drives the stirring rod to rotate, and the stirring rod mixes the adhesive and the diluent to keep the fluidity of the adhesive constant. Therefore, it has the function of quantitatively replenishing the diluent to prevent the fluidity of the adhesive from decreasing and affecting the coating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the coating mechanism of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the dilution mechanism of the present invention.

[0020] Figure 4 It is a left side cross-sectional view of the dilution mechanism of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the blanking mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of the drying component structure of the present invention.

[0023] Figure 7 It is a right side cross-sectional view of the air supply unit of the present invention.

[0024] Figure 8 This is a front cross-sectional view of the timing start component of the present invention.

[0025] Figure: 1, glue box; 2, controller; 3, first motor; 4, stirring rod; 5, coating mechanism; 6, pump body; 7, diluting mechanism; 8, feeding mechanism; 51, first support plate; 52, glue tank; 53, second motor; 54, glue roller; 71, diluent tank; 72, third motor; 73, roller; 74, guide groove; 81, second support plate; 82, first guide roller; 83, second guide roller; 84, scraper; 85, bump; 86, drying assembly; 87 , timing start component; 861, drying box; 862, bracket; 863, air knife; 864, air supply unit; 865, third guide roller; 8641, heating cylinder; 8642, air hood; 8643, heater; 8644, negative ion generator; 8645, fan; 8646, filter plate; 871, dust cover; 872, counter; 873, first contact; 874, rocker; 875, tension spring; 876, roller; 877, second contact. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0027] The present invention provides a technical solution: a coating device for Teflon tape processing, such as Figure 1As shown, it includes a glue box 1, a controller 2, a first motor 3, and a stirring rod 4. The glue box 1 is used to store silicone adhesive. The controller 2 and the first motor 3 are respectively installed at the upper and lower ends of the front of the glue box 1, and the controller 2 is electrically connected to the first motor 3. The stirring rod 4 is installed at the output end of the first motor 3. Under the drive of the first motor 3, the stirring rod 4 stirs the silicone adhesive to keep the silicone adhesive uniform. A coating mechanism 5 is installed in the middle of the upper surface of the glue box 1 along the front-to-back direction. A pump body 6 electrically connected to the controller 2 is installed on the left side wall of the glue box 1. The liquid inlet of the pump body 6 is connected to the bottom end of the left side wall of the glue box 1 through a pipeline. The liquid outlet of the pump body 6 is installed with a pipeline, and the pipeline outlet is directly above the coating mechanism 5. Under the suction of the pump body 6, the silicone adhesive in the glue box 1 is transported to the coating mechanism 5. A dilution mechanism 7 and a feeding mechanism 8 are respectively installed on the left and right sides of the upper surface of the glue box 1 along the front-to-back direction.

[0028] Furthermore, Figure 2 As shown, the coating mechanism 5 includes two first support plates 51 installed at the front and rear ends of the middle part of the upper surface of the glue box 1, and a glue groove 52 is installed on the top of the inner side of the first support plate 51. The bottom of the glue groove 52 is open and can flow silicone adhesive downward. A second motor 53 electrically connected to the controller 2 is installed at the bottom end of the front side of the first support plate 51 located at the front side, and one end of the rubber roller 54 is installed at the output end of the second motor 53. The other end of the rubber roller 54 is connected to the front side of the first support plate 51 located at the rear side through a bearing. The rubber roller 54 is driven to rotate by the second motor 53, so that the silicone adhesive on the rubber roller 54 is coated on the surface of the Teflon coil.

[0029] Furthermore, Figure 3 and Figure 4 As shown, the dilution mechanism 7 includes a diluent tank 71 installed on the left side of the upper surface of the glue box 1 along the front-to-back direction. The diluent tank 71 is used to store diluent for silicone adhesive. A third motor 72 electrically connected to the controller 2 is installed at the bottom of the front of the diluent tank 71. One end of a roller 73 is installed at the output end of the third motor 72. The other end of the roller 73 is connected to the rear side of the inner cavity of the diluent tank 71 through a bearing. A plurality of guide grooves 74 are opened on the outer wall of the roller 73 along the circumferential direction from front to back. The roller 73 can be rotated under the drive of the third motor 72. The guide grooves 74 carry the diluent to move. The different positions of the guide grooves 74 are used to make the diluent drip evenly into the glue box 1. The maximum spacing between the guide grooves 74 is less than the length of the inner cavity of the glue box 1 to prevent the diluent from falling outside the glue box 1 and causing waste.

[0030] Furthermore, Figure 5As shown, the unloading mechanism 8 includes two second support plates 81 respectively installed on the right ends of the front and rear sides of the glue box 1, and the left and right ends of the inner side of the second support plate 81 are respectively installed with a rotatable first guide roller 82 and a second guide roller 83. The first guide roller 82 and the second guide roller 83 can transport the Teflon coil by rolling. A tilted scraper 84 is installed in the middle part of the inner side of the second support plate 81. The scraper 84 scrapes off the excess silicone adhesive on the surface of the Teflon coil to make the thickness of the silicone adhesive on the Teflon coil uniform. A protrusion 85 is installed at the front end of the first guide roller 82, and both sides of the protrusion 85 are inclined. A drying component 86 is installed on the left side of the upper surface of the second support plate 81 along the front-to-back direction, and a timing start component 87 is installed on the left end of the front side of the second support plate 81.

[0031] Furthermore, Figure 6 As shown, the drying component 86 includes a drying box 861 installed on the left side of the upper surface of the second support plate 81, and brackets 862 at the front and rear ends of the left side of the upper surface of the drying box 861. The Teflon coil is set up through the brackets 862. A wind knife 863 is installed in the vertical direction on the front of the drying box 861, and an air supply unit 864 is installed in the front and rear direction on the right side wall of the drying box 861. The front end of the air supply unit 864 is connected to the outer wall of the wind knife 863 through an air pipe. A rotatable third guide roller 865 is installed at the bottom of the inner cavity of the drying box 861, and the Teflon coil is conducted by rolling through the third guide roller 865.

[0032] Furthermore, Figure 7 As shown, the air supply unit 864 includes a heating cylinder 8641 installed on the right side wall of the drying box 861 along the front-to-back direction, an air hood 8642 is installed at the front end of the heating cylinder 8641, and the front end of the air hood 8642 is connected to the outer wall of the air knife 863 through an air pipe. The inner cavity of the heating cylinder 8641 is respectively installed with a heater 8643, a negative ion generator 8644, a fan 8645 and a filter plate 8646 from front to back, and the negative ion generator 8644 and the fan 8645 are both electrically connected to the controller 2. Under the suction of the fan 8645, the external air is sucked into the heating cylinder 8641, the filter plate 8646 filters the dust in the gas, the negative ion generator 8644 generates negative oxygen ions, and the negative oxygen ions are allowed to flow with the gas. The heater 8643 heats the gas, so that the air knife 863 blows hot air to the Teflon coil, and the negative oxygen ions neutralize the charge on the Teflon coil, eliminate static electricity, and the heat can also dry the Teflon coil.

[0033] Furthermore, Figure 8As shown, the timing start component 87 includes a dust cover 871 installed on the left end of the front face of the second support plate 81 located at the front side, a counter 872 is installed on the front face of the dust cover 871, a first contact 873 is installed on the right end of the top of the inner cavity of the dust cover 871, the first contact 873 is externally connected to a power supply, and a swing rod 874 that can swing left and right is installed on the top of the inner cavity of the dust cover 871 through a pin shaft, and one end of a tension spring 875 is clamped on the left wall of the swing rod 874, and the other end of the tension spring 875 is clamped on the top of the inner cavity of the dust cover 871. Under the tension of the tension spring 875, the swing rod 874 is pulled to the left, and the bottom of the swing rod 874 is clamped. A rotatable roller 876 is installed at the end, and the roller 876 is in contact with the first guide roller 82. A second contact 877 electrically connected to the counter 872 is installed on the right side of the rocker arm 874. The second contact 877 and the first contact 873 are located on the same horizontal line. When the first guide roller 82 rotates, the inclined surface of the protrusion 85 can squeeze the rocker arm 874 to the right, so that the second contact 877 on the rocker arm 874 contacts the first contact 873, and the counter 872 counts once. When the counter 872 reaches the set value, it transmits an electrical signal to the controller 2, so that the controller 2 can control the third motor 72 to start.

[0034] Working principle:

[0035] In step 1, the Teflon coil is placed on the bracket 862. The Teflon coil passes through the third guide roller 865, the first guide roller 82, and the second guide roller 83 and is installed on the winder. As the Teflon coil moves, the fan 8645 draws in external air with suction, and the filter plate 8646 filters dust in the air. Then, the negative ion generator 8644 generates negative oxygen ions that move with the air. The heater 8643 heats the air. Finally, the wind knife 863 blows hot air toward the Teflon coil. The negative oxygen ions neutralize the charge on the Teflon coil, eliminate static electricity, and improve the adsorption of the silicone adhesive. The heat can dry the Teflon coil and prevent bubbles from forming in the adhesive on the surface of the Teflon coil due to high humidity.

[0036] In step 2, the controller 2 starts the pump 6. The suction of the pump 6 guides the silicone adhesive in the glue box 1 into the glue groove 52. The bottom of the glue groove 52 opens and the adhesive drips onto the rubber roller 54. As the second motor 53 drives the rubber roller 54 to rotate, the rubber roller 54 transfers the adhesive to the surface of the Teflon coil. The scraper 84 scrapes off the excess adhesive to make the adhesive thickness on the surface of the Teflon coil uniform, thus achieving the Teflon coil glue coating.

[0037] Step three: as the first guide roller 82 rotates, the inclined surface of the protrusion 85 repeatedly squeezes the roller 876, causing the rocker 874 to swing to the right. When the second contact 877 contacts the first contact 873, the counter 872 counts until the number of counts reaches the set value of the counter 872. The counter 872 sends an electrical signal to the controller 2. The controller 2 starts the third motor 72. The third motor 72 drives the roller 73 to rotate a certain angle. The guide groove 74 carries the diluent to move, allowing the diluent to drip evenly into the glue box 1. At the same time, the first motor 3 drives the stirring rod 4 to rotate to mix the adhesive and the diluent, so that the fluidity of the adhesive is constant and the coating quality is guaranteed.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A coating device for Teflon tape processing, characterized in that: The invention comprises a glue box (1), a controller (2), a first motor (3) and a stirring rod (4), wherein the glue box (1) stores silicone adhesive, the controller (2) is mounted on the top of the front of the glue box (1), the first motor (3) is mounted on the bottom of the front of the glue box (1), and the first motor (3) is electrically connected to the controller (2), the output end of the first motor (3) is mounted on the front end of the stirring rod (4), and the stirring rod (4) is driven by the first motor (3) to stir the silicone adhesive. The coating device for Teflon tape processing also includes: A coating mechanism (5) is installed in the middle of the upper surface of the glue box (1) along the front-to-back direction; A pump body (6) is installed on the left side wall of the glue box (1), and the pump body (6) is electrically connected to the controller (2). The liquid inlet of the pump body (6) is connected to the bottom end of the left side wall of the glue box (1) through a pipe, and a pipe is installed at the other end of the pump body (6), and the pipe outlet is located directly above the coating mechanism (5); A dilution mechanism (7) is mounted on the left end of the upper surface of the glue box (1) along the front-back direction; A feeding mechanism (8) is mounted on the right end of the upper surface of the rubber box (1) along the front-back direction; The unloading mechanism (8) comprises: a second support plate (81), a first guide roller (82), a second guide roller (83), a scraper (84), a bump (85), a drying component (86) and a timing start component (87); There are two second support plates (81), which are respectively installed at the front and rear ends of the right side of the upper surface of the glue box (1); the first guide roller (82) and the second guide roller (83) are respectively rotatably installed at the left and right ends of the inner side of the second support plate (81); the Teflon coil is rolled by the first guide roller (82) and the second guide roller (83); the scraper (84) is obliquely installed at the middle of the inner side of the second support plate (81) to scrape off excess silicone adhesive on the surface of the Teflon coil; the protrusion (85) is installed at the front end of the first guide roller (82); the drying component (86) is installed at the left end of the upper surface of the second support plate (81) along the front-to-back direction; and the timing start component (87) is installed at the left end of the front side of the second support plate (81); The drying assembly (86) comprises: a drying box (861), a bracket (862), an air knife (863), an air supply unit (864), and a third guide roller (865); The drying box (861) is installed on the left end of the upper surface of the second support plate (81) in the front-to-back direction. There are two brackets (862), which are installed on the front and back ends of the upper surface of the drying box (861). The air knife (863) is installed vertically on the front of the drying box (861). The air supply unit (864) is installed on the right side wall of the drying box (861) in the front-to-back direction. The front end of the air supply unit (864) is connected to the outer wall of the air knife (863) through an air pipe. The third guide roller (865) is rotatably installed at the bottom of the inner cavity of the drying box (861), and the Teflon coil is conducted through the third guide roller (865); The air supply unit (864) includes: a heating cylinder (8641), an air hood (8642), a heater (8643), a negative ion generator (8644), a fan (8645), and a filter plate (8646); The heating cylinder (8641) is installed on the right side wall of the drying box (861) in the front-to-back direction, the air hood (8642) is installed at the front end of the heating cylinder (8641), the air hood (8642) is connected to the air knife (863) through an air pipe, the heater (8643), the negative ion generator (8644), the fan (8645) and the filter plate (8646) are installed in the inner cavity of the heating cylinder (8641) from front to back, and the negative ion generator (8644) and the fan (8645) are both electrically connected to the controller (2). When the fan (8645 rotates, it draws external gas into the heating cylinder (8641), filters the gas through the filter plate (8646), and the negative ion generator (8644) generates negative oxygen ions, which move with the gas. The heater (8643) can heat the gas.

2. A coating device for Teflon tape processing according to claim 1, characterized in that: The coating mechanism (5) comprises: a first support plate (51), a glue tank (52), a second motor (53) and a glue roller (54); There are two first support plates (51), which are respectively installed at the front and rear ends of the middle part of the upper surface of the glue box (1). The glue groove (52) is installed on the top of the inner side of the first support plate (51) along the front-to-back direction. The second motor (53) is installed at the bottom of the front side of the first support plate (51) located at the front side, and the second motor (53) is electrically connected to the controller (2). One end of the glue roller (54) is installed at the output end of the second motor (53), and the other end is connected to the front end of the first support plate (51) located at the rear side through a bearing.

3. A coating device for Teflon tape processing according to claim 2, characterized in that: The dilution mechanism (7) comprises: a dilution liquid tank (71), a third motor (72), a roller (73) and a guide groove (74); The diluent tank (71) is installed at the left end of the upper surface of the glue box (1) along the front-back direction, and is used to store the diluent added to the silicone adhesive. The third motor (72) is installed at the bottom end of the front of the diluent tank (71), and the third motor (72) is electrically connected to the controller (2). One end of the roller (73) is installed at the output end of the third motor (72), and the other end is connected to the rear side of the inner cavity of the diluent tank (71) through a bearing. The number of guide grooves (74) is plural, and they are opened on the outer wall of the roller (73) from front to back along the circumferential direction.

4. A coating device for Teflon tape processing according to claim 3, characterized in that: The maximum spacing of the guide grooves (74) is smaller than the inner cavity length of the rubber box (1).

5. A coating device for Teflon tape processing according to claim 4, characterized in that: Both sides of the protrusion (85) are shaped as inclined surfaces.

6. A coating device for Teflon tape processing according to claim 5, characterized in that: The timing start assembly (87) includes: a dust cover (871), a counter (872), a first contact (873), a swing rod (874), a tension spring (875), a roller (876) and a second contact (877); The dust cover (871) is mounted on the left end of the front face of the second support plate (81) located at the front side, the counter (872) is mounted on the front face of the dust cover (871), and the counter (872) is electrically connected to the controller (2), the first contact (873) is vertically mounted on the right end of the top of the inner cavity of the dust cover (871), and the first contact (873) is externally connected to a power supply, the swing rod (874) is mounted on the top of the inner cavity of the dust cover (871) so as to be able to swing left and right through a pin shaft, and the tension spring ( One end of the contact (875) is clamped on the top of the inner cavity of the dust cover (871), and the other end is clamped on the left side wall of the swing rod (874). Under the tension of the tension spring (875), the swing rod (874) is pulled to the left, and the roller (876) is rotatably installed at the bottom end of the swing rod (874), and the roller (876) contacts the first guide roller (82). The second contact (877) is installed on the right side wall of the swing rod (874), and the second contact (877) is electrically connected to the counter (872).

7. A coating device for Teflon tape processing according to claim 6, characterized in that: The second contact point (877) and the first contact point (873) are on the same horizontal line.

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