Residual adhesive wiping mechanism

Abstract

This invention discloses a residual adhesive wiping mechanism, comprising: a base plate, an unwinding shaft, and a rewinding shaft. A wiping cloth section is formed between a new cloth roll on the unwinding shaft and a waste cloth roll wound on the rewinding shaft. A pressing bottle is located directly below the wiping cloth section. The horizontal part of an L-shaped movable block is positioned between the pressing plate and the wiping cloth section. One end of the unwinding shaft is fixedly mounted on a first upright plate, and a rotating disk and a baffle are fitted on its outer side. A nut is mounted on the other end of the unwinding shaft, and a spring is located between the nut and the baffle. A pad is mounted on the side of the first upright plate facing the rotating disk. This invention can improve the effect of wiping residual adhesive, effectively avoid waste caused by alcohol evaporation, ensure sufficient and consistent alcohol usage on each wiping cloth section, prevent the cloth roll from rotating itself, and avoid unnecessary rotation of the rotating disk under stress during the process, thus improving the stability of adhesive wiping.

Description

Technical Field

[0001] This invention relates to the field of adhesive dispensing technology, and in particular to a residual adhesive wiping mechanism. Background Technology

[0002] Dispensing typically involves using a dispensing device to spray or apply adhesive, solvents, or other liquids onto a product to achieve functions such as sealing, fixing, and protection. In existing dispensing processes, it is usually necessary to wipe and clean the nozzle to prevent clogging, overflow, or residue. However, robotic arms are not very effective at removing residual adhesive, and alcohol is volatile, leading to waste when left exposed to air for extended periods. Furthermore, it is impossible to guarantee sufficient and consistent alcohol usage on each section of the cleaning cloth. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a residual adhesive wiping mechanism that can improve the effect of wiping residual adhesive, effectively avoid waste caused by alcohol evaporation, and ensure sufficient and consistent alcohol usage on each section of the adhesive wiping cloth.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a residual adhesive wiping mechanism, comprising: a base plate, an unwinding shaft and a rewinding shaft, wherein one end of the unwinding shaft and the rewinding shaft are respectively installed on the same side of a first upright plate and a second upright plate, and the first upright plate and the second upright plate are both installed on the upper surface of the base plate. A cloth roll is fitted on the unwinding shaft, and the end of the cloth roll away from the unwinding shaft is wound around the rewinding shaft, thereby forming an adhesive wiping cloth segment between the new cloth roll segment on the unwinding shaft and the waste cloth roll segment wound around the rewinding shaft. A press bottle containing liquid alcohol is disposed on the upper surface of the base plate and between the first and second vertical plates. The press bottle is located directly below the wiping cloth section. The upper surface of the press plate has several liquid outlet holes that communicate with the suction tube. The horizontal part of an L-shaped movable block is disposed between the press plate and the wiping cloth section. The vertical part of the L-shaped movable block, which can move in the vertical direction, is mounted on a strip plate. This strip plate is connected to the piston rod of a vertical cylinder. A vertically penetrating mounting groove is provided on the horizontal part of the L-shaped movable block. A sponge block is embedded in the mounting groove and contacts the lower surface of the wiping cloth section. One end of the unwinding shaft is fixedly installed on the first upright plate. A rotating disk and a baffle plate located on the side of the rotating disk opposite to the first upright plate are fitted on the outside of the unwinding shaft. The fabric roll fitted on the unwinding shaft is located between the rotating disk and the baffle plate. A nut is installed on the other end of the unwinding shaft. A spring in a compressed state is fitted on the outside of the unwinding shaft and located between the nut and the baffle plate. A pad is installed on the side of the first upright plate facing the rotating disk. The surface of this pad opposite to the first upright plate is in frictional contact with the side surface of the rotating disk opposite to the fabric roll.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, a motor is installed on the side of the second upright plate opposite to the winding shaft. The output shaft of the motor passes through the second upright plate and is connected to the winding shaft. The end of the winding shaft connected to the output shaft of the motor is rotatably mounted on the second upright plate through at least one bearing.

[0006] 2. In the above scheme, a metal disc that can rotate with the winding shaft is fitted on the outside of the shaft. Several sensing protrusions are provided at equal intervals along the circumference at the edge of the metal disc. A sensor that cooperates with the sensing protrusions is installed on the second upright plate. The sensor is electrically connected to the motor.

[0007] 3. In the above scheme, the nut is a wing nut.

[0008] 4. In the above scheme, the rotating disk has an annular protrusion extending axially toward the baffle in the center, and the cloth roll is fitted onto the outside of the annular protrusion.

[0009] 5. In the above scheme, the vertical cylinder is installed on the side of the first vertical plate opposite to the unwinding shaft or on the side of the second vertical plate opposite to the winding shaft.

[0010] 6. In the above scheme, the surface of the strip plate opposite to the unwinding shaft of the first vertical plate and / or the surface of the second vertical plate opposite to the winding shaft are connected by at least one set of slide rails and sliders.

[0011] 7. In the above scheme, the lower surface of the sponge block is flush with the lower surface of the horizontal part of the L-shaped movable block.

[0012] 8. In the above scheme, a guide groove is provided on the upper surface of the horizontal part of the L-shaped movable block for the adhesive cloth segment to be embedded.

[0013] 9. In the above scheme, the upper surface of the sponge block is higher than the bottom surface of the guide groove.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The adhesive residue wiping mechanism of the present invention has a press bottle containing liquid alcohol disposed on the upper surface of the base plate between the first and second vertical plates. The press plate of the press bottle is located directly below the adhesive wiping cloth section. The upper surface of the press plate has several liquid outlet holes communicating with the suction tube. The horizontal part of an L-shaped movable block is disposed between the press plate and the adhesive wiping cloth section. The vertical part of the vertically movable L-shaped block is mounted on a strip plate, which is connected to the piston rod of a vertical cylinder. A vertically penetrating mounting groove is formed on the horizontal part of the L-shaped movable block. A sponge block is embedded in the mounting groove and contacts the lower surface of the adhesive wiping cloth section. This mechanism can not only wipe the adhesive residue with the alcohol-soaked adhesive wiping cloth section to improve the removal effect, but also effectively avoid the waste caused by alcohol evaporation during long-term use. It can also ensure that the amount of alcohol used on each adhesive wiping cloth section is sufficient and consistent during continuous wiping, thereby improving the adhesive wiping efficiency. The unwinding shaft has a fixed end mounted on the first vertical plate. A rotating disk and a baffle plate located on the side of the rotating disk opposite to the first vertical plate are fitted on the outside of the unwinding shaft. The cloth roll fitted on the unwinding shaft is located between the rotating disk and the baffle plate. A nut is installed on the other end of the unwinding shaft. A spring in a compressed state is fitted on the outside of the unwinding shaft and located between the nut and the baffle plate. A pad is installed on the side of the first vertical plate facing the rotating disk. The surface of this pad opposite to the first vertical plate is in frictional contact with the side surface of the rotating disk opposite to the cloth roll. The spring can squeeze and clamp the cloth roll between the rotating disk and the baffle plate to prevent the cloth roll from rotating on its own. It can also increase the squeezing force between the rotating disk and the pad, thereby increasing the frictional resistance of the rotating disk. This avoids unnecessary rotation of the rotating disk due to force during the up and down movement of the movable block, improves the positional accuracy and stability of the adhesive wiping section, and thus improves the stability of adhesive wiping.

[0015] 2. The detachable dispensing mechanism of the present invention has a motor mounted on the side of the second vertical plate opposite to the winding shaft. The output shaft of the motor passes through the second vertical plate and is connected to the winding shaft. The end of the winding shaft connected to the output shaft of the motor is rotatably mounted on the second vertical plate through at least one bearing. A metal disc that can rotate with the winding shaft is fitted on the outside of the winding shaft. Several sensing protrusions are provided at equal intervals along the circumference at the edge of the metal disc. A sensor that cooperates with the sensing protrusions is mounted on the second vertical plate. The sensor is electrically connected to the motor. This ensures the consistency of the waste cloth winding distance, that is, the movement distance of the cloth segment after each application of adhesive, thereby ensuring that the new cloth segment can fully wipe the residual adhesive and avoiding the waste caused by unused new cloth segments being wound up to the winding shaft, thus improving processing efficiency. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the residual adhesive wiping mechanism of the present invention; Appendix Figure 2 For the appendixFigure 1 Enlarged view of point A in the middle; Appendix Figure 3 This is a partial structural diagram of the adhesive residue wiping mechanism of the present invention. Figure 1 ; Appendix Figure 4 This is a partial structural cross-sectional view of the adhesive residue wiping mechanism of the present invention; Appendix Figure 5 This is a partial structural diagram of the adhesive residue wiping mechanism of the present invention. Figure 2 ; Appendix Figure 6 Appendix to this invention Figure 5 A schematic cross-sectional view of the middle BB; Appendix Figure 7 Appendix to this invention Figure 6 Enlarged view of point D in the middle; Appendix Figure 8 Appendix to this invention Figure 5 A cross-sectional view of the middle CC.

[0017] In the attached diagrams: 100, fabric roll; 101, new fabric roll section; 102, waste fabric roll section; 103, adhesive wiping cloth section; 1, base plate; 2, unwinding shaft; 3, rewinding shaft; 41, first vertical plate; 42, second vertical plate; 5, pressing bottle; 51, pressing plate; 52, suction tube; 53, liquid outlet; 6, L-shaped movable block; 61, horizontal part; 62, vertical part; 63, guide groove; 7. 8. Strip plate; 91. Vertical cylinder; 92. Slide rail; 93. Slider; 10. Mounting groove; 11. Sponge block; 12. Mounting base; 121. Stop bar; 13. Rotating disk; 131. Annular protrusion; 14. Stop plate; 15. Nut; 16. Spring; 17. Pad; 18. Motor; 19. Metal disk; 191. Sensing protrusion; 20. Sensor; 21. Second stop plate; 22. Bearing. Detailed Implementation

[0018] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0019] Example 1: A residual adhesive wiping mechanism includes: a base plate 1, an unwinding shaft 2 and a winding shaft 3. One end of the unwinding shaft 2 and the winding shaft 3 are respectively installed on the same side of a first upright plate 41 and a second upright plate 42. The first upright plate 41 and the second upright plate 42 are both installed on the upper surface of the base plate 1. A cloth roll 100 is fitted on the unwinding shaft 2. The end of the cloth roll 100 away from the unwinding shaft 2 is wound around the winding shaft 3, thereby forming an adhesive wiping cloth section 103 between the new cloth roll section 101 on the unwinding shaft 2 and the waste cloth roll section 102 wound around the winding shaft 3. A press bottle 5 containing liquid alcohol is disposed on the upper surface of the base plate 1 and between the first vertical plate 41 and the second vertical plate 42. The press plate 51 of the press bottle 5 is located directly below the adhesive cloth section 103. The upper surface of the press plate 51 has several liquid outlet holes 53 that communicate with the suction tube 52. The horizontal part 61 of an L-shaped movable block 6 is disposed between the press plate 51 and the adhesive cloth section 103. The vertical part 62 of the L-shaped movable block 6, which can move in the vertical direction, is mounted on a strip plate 7. This strip plate 7 is connected to the piston rod of a vertical cylinder 8. A vertically penetrating mounting groove 10 is provided on the horizontal part 61 of the L-shaped movable block 6. A sponge block 11 is embedded in the mounting groove 10 and contacts the lower surface of the adhesive cloth section 103. One end of the unwinding shaft 2 is fixedly installed on the first upright plate 41. A rotating disk 13 and a baffle 14 located on the side of the rotating disk 13 opposite to the first upright plate 41 are fitted on the outside of the unwinding shaft 2. The cloth roll 100 fitted on the unwinding shaft 2 is located between the rotating disk 13 and the baffle 14. A nut 15 is installed on the other end of the unwinding shaft 2. A spring 16 in a compressed state is fitted on the outside of the unwinding shaft 2 and located between the nut 15 and the baffle 14. A pad 17 is installed on the side of the first upright plate 41 facing the rotating disk 13. The surface of the pad 17 opposite to the first upright plate 41 is in frictional contact with the side surface of the rotating disk 13 opposite to the cloth roll 100. After one wiping is completed, the vertical cylinder drives the movable block to move upward, and the horizontal part of the movable block no longer presses the press bottle, thus avoiding the evaporation and waste of alcohol due to prolonged exposure and the decrease in wiping effect; Next, the motor drives the take-up shaft to rotate, taking up the cloth segment that has already been wiped with residual adhesive. This, in turn, drives the cloth roll on the unwind shaft to rotate, providing new adhesive-wiping cloth segments. The motor's start and stop are controlled by the interaction between the sensor and the sensing protrusion on the metal disc, ensuring the consistency of the waste cloth winding distance, i.e., the moving distance of the adhesive-wiping cloth segment, after each adhesive wiping process. This ensures that the new cloth segment can thoroughly wipe away residual adhesive while preventing unused new cloth segments from being wound up to the take-up shaft and wasting them, thus improving processing efficiency.

[0020] A motor 18 is mounted on the side of the second vertical plate 42 opposite to the winding shaft 3. The output shaft of the motor 18 passes through the second vertical plate 42 and is connected to the winding shaft 3. The end of the winding shaft 3 connected to the output shaft of the motor 18 is rotatably mounted on the second vertical plate 42 through at least one bearing 22.

[0021] A metal disc 19 that can rotate with the winding shaft 3 is fitted on the outside of the shaft. Several sensing protrusions 191 are provided at equal intervals along the circumference at the edge of the metal disc 19. A sensor 20 that cooperates with the sensing protrusions 191 is installed on the second upright plate 42. The sensor 20 is electrically connected to the motor 18.

[0022] A second baffle plate 21 is fitted on the aforementioned winding shaft 3 and on the side opposite to the second vertical plate 42 of the waste cloth roll 102.

[0023] Nut 15 mentioned above is a wing nut.

[0024] The rotating disk 13 has an annular protrusion 131 extending axially toward the baffle 14 in the center, and the cloth roll 100 is fitted onto the outside of the annular protrusion 131.

[0025] The aforementioned vertical cylinder 8 is installed on the first vertical plate 41 and the second vertical plate 42, opposite to the winding shaft 3.

[0026] The surface of the strip plate 7 opposite to the unwinding shaft 2 and the surface of the second vertical plate 42 opposite to the winding shaft 3 are connected by at least one set of slide rails 91 and slider 92.

[0027] The lower surface of the aforementioned sponge block 11 is flush with the lower surface of the horizontal part 61 of the L-shaped movable block 6.

[0028] A guide groove 63 is provided on the upper surface of the horizontal part 61 of the L-shaped movable block 6 for the adhesive cloth section 103 to be embedded.

[0029] The upper surface of the aforementioned sponge block 11 is higher than the bottom surface of the guide groove 63.

[0030] Example 2: A residual adhesive wiping mechanism includes: a base plate 1, an unwinding shaft 2 and a winding shaft 3. One end of the unwinding shaft 2 and the winding shaft 3 are respectively installed on the same side of a first upright plate 41 and a second upright plate 42. The first upright plate 41 and the second upright plate 42 are both installed on the upper surface of the base plate 1. A cloth roll 100 is fitted on the unwinding shaft 2. The end of the cloth roll 100 away from the unwinding shaft 2 is wound around the winding shaft 3, thereby forming an adhesive wiping cloth section 103 between the new cloth roll section 101 on the unwinding shaft 2 and the waste cloth roll section 102 wound around the winding shaft 3. A press bottle 5 containing liquid alcohol is disposed on the upper surface of the base plate 1 and between the first vertical plate 41 and the second vertical plate 42. The press plate 51 of the press bottle 5 is located directly below the adhesive cloth section 103. The upper surface of the press plate 51 has several liquid outlet holes 53 that communicate with the suction tube 52. The horizontal part 61 of an L-shaped movable block 6 is disposed between the press plate 51 and the adhesive cloth section 103. The vertical part 62 of the L-shaped movable block 6, which can move in the vertical direction, is mounted on a strip plate 7. This strip plate 7 is connected to the piston rod of a vertical cylinder 8. A vertically penetrating mounting groove 10 is provided on the horizontal part 61 of the L-shaped movable block 6. A sponge block 11 is embedded in the mounting groove 10 and contacts the lower surface of the adhesive cloth section 103. One end of the unwinding shaft 2 is fixedly installed on the first upright plate 41. A rotating disk 13 and a baffle 14 located on the side of the rotating disk 13 opposite to the first upright plate 41 are fitted on the outside of the unwinding shaft 2. The cloth roll 100 fitted on the unwinding shaft 2 is located between the rotating disk 13 and the baffle 14. A nut 15 is installed on the other end of the unwinding shaft 2. A spring 16 in a compressed state is fitted on the outside of the unwinding shaft 2 and located between the nut 15 and the baffle 14. A pad 17 is installed on the side of the first upright plate 41 facing the rotating disk 13. The surface of the pad 17 opposite to the first upright plate 41 is in frictional contact with the side surface of the rotating disk 13 opposite to the cloth roll 100. Each time you use it, first install a brand new roll of fabric on the unwinding spindle, and then wrap one end of the roll around and fix it on the rewinding spindle, so that the lower surface of a section of fabric contacts the sponge block on the L-shaped movable block. Then, the vertical cylinder drives the movable block to move downwards. The horizontal part of the movable block presses down on the pressing plate of the pressing bottle, pumping the alcohol in the pressing bottle to the upper surface of the pressing plate, where it is absorbed by the sponge block and then conducted to the adhesive cloth section. Next, the adhesive head to be wiped is moved to contact the upper surface of the adhesive cloth section, thus wiping the residual adhesive on the adhesive head with the alcohol-soaked adhesive cloth section. Because of the compatibility between alcohol and residual adhesive, the efficiency and effect of removing residual adhesive can be improved.

[0031] The rotating disk 13 has an annular protrusion 131 extending axially toward the baffle 14 in the center, and the cloth roll 100 is fitted onto the outside of the annular protrusion 131.

[0032] The aforementioned vertical cylinder 8 is installed on the side of the first vertical plate 41 opposite to the unwinding shaft 2.

[0033] The surface of the strip plate 7 opposite to the first vertical plate 41 on the side of the unwinding shaft 2 is connected to the slider 92 by at least one set of slide rails 91.

[0034] The upper surface of the aforementioned base plate 1 is provided with a mounting base 12 for the bottom of the press bottle 5 to be inserted.

[0035] The aforementioned mounting base 12 is formed by four sequentially arranged and connected end to end baffles 121.

[0036] One side of the pad 17 is embedded in the first upright plate 41 and connected to the first upright plate 41 by bolts, and the surface of the other side of the pad 17 protrudes from the side surface of the first upright plate 41.

[0037] The bottom of each of the first upright plate 41 and the second upright plate 42 is fixedly connected to the base plate 1 by bolts.

[0038] The working principle of this invention is as follows: Each time you use it, first install a brand new roll of fabric on the unwinding spindle, and then wrap one end of the roll around and fix it on the rewinding spindle, so that the lower surface of a section of fabric contacts the sponge block on the L-shaped movable block. Then, the vertical cylinder drives the movable block to move down, and the horizontal part of the movable block presses down on the pressing plate of the pressing bottle. The alcohol in the pressing bottle is pumped to the upper surface of the pressing plate and absorbed by the sponge block. Then, it is conducted to the adhesive cloth section through the sponge block. Next, the adhesive head to be wiped is moved to contact the upper surface of the adhesive cloth section. This allows the alcohol-soaked adhesive cloth section to wipe the residual adhesive on the adhesive head. Because of the compatibility between alcohol and residual adhesive, the efficiency and effect of removing residual adhesive can be improved. After one wiping is completed, the vertical cylinder drives the movable block to move upward, and the horizontal part of the movable block no longer presses the press bottle, thus avoiding the evaporation and waste of alcohol due to prolonged exposure and the decrease in wiping effect; Next, the motor drives the take-up shaft to rotate, taking up the cloth segment that has already been wiped with residual adhesive. This, in turn, drives the cloth roll on the unwind shaft to rotate, providing new adhesive-wiping cloth segments. The motor's start and stop are controlled by the interaction between the sensor and the sensing protrusion on the metal disc, ensuring the consistency of the waste cloth winding distance, i.e., the moving distance of the adhesive-wiping cloth segment, after each adhesive wiping process. This ensures that the new cloth segment can thoroughly wipe away residual adhesive while preventing unused new cloth segments from being wound up to the take-up shaft and wasting them, thus improving processing efficiency.

[0039] When using the aforementioned residual adhesive wiping mechanism, it can improve the removal effect of residual adhesive by wiping with an alcohol-soaked wiping cloth, effectively avoid waste caused by alcohol evaporation during long-term use, and ensure sufficient and consistent alcohol usage on each wiping cloth segment during continuous wiping, thereby improving the efficiency and effectiveness of adhesive wiping. Furthermore, the spring can squeeze and clamp the cloth roll between the rotating disk and the baffle to prevent the cloth roll from rotating on its own, and also increase the squeezing force between the rotating disk and the pad, thereby increasing the frictional resistance of the rotating disk and avoiding unnecessary rotation caused by the force on the rotating disk during the up and down movement of the movable block, thus improving the positional accuracy and stability of the wiping cloth segment, thereby improving the stability of adhesive wiping. In addition, it can ensure the consistency of the waste cloth winding distance, i.e., the moving distance of the wiping cloth segment, after each adhesive wiping, thereby ensuring that the new cloth segment can fully wipe the residual adhesive, and avoiding the waste of unused new cloth segments being wound up to the winding shaft, thus improving processing efficiency.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A residual adhesive wiping mechanism, comprising: The base plate (1), the unwinding shaft (2) and the winding shaft (3) are respectively installed on the same side of the first upright plate (41) and the second upright plate (42). The first upright plate (41) and the second upright plate (42) are both installed on the upper surface of the base plate (1). A cloth roll (100) is fitted on the unwinding shaft (2). The end of the cloth roll (100) away from the unwinding shaft (2) is wound around the winding shaft (3), thereby forming a wiping cloth section (103) between the new cloth roll section (101) on the unwinding shaft (2) and the waste cloth roll section (102) wound around the winding shaft (3). The feature is that: a press bottle (5) containing liquid alcohol is disposed on the upper surface of the base plate (1) between the first vertical plate (41) and the second vertical plate (42); the press plate (51) of the press bottle (5) is located directly below the adhesive cloth section (103); the upper surface of the press plate (51) is provided with several liquid outlet holes (53) communicating with the suction tube (52); and the horizontal part (61) of an L-shaped movable block (6) is disposed on the press plate ( 51) Between the adhesive cloth section (103) and the vertical part (62) of the L-shaped movable block (6) which can move in the vertical direction, is mounted on a strip plate (7). This strip plate (7) is connected to the piston rod of a vertical cylinder (8). A vertically penetrating mounting groove (10) is opened on the horizontal part (61) of the L-shaped movable block (6). A sponge block (11) is embedded in the mounting groove (10) and contacts the lower surface of the adhesive cloth section (103). One end of the unwinding shaft (2) is fixedly installed on the first upright plate (41). A rotating disk (13) and a baffle (14) located on the side of the rotating disk (13) opposite to the first upright plate (41) are fitted on the outside of the unwinding shaft (2). The cloth roll (100) fitted on the unwinding shaft (2) is located between the rotating disk (13) and the baffle (14). A nut (15) is installed on the other end of the unwinding shaft (2). A spring (16) in a compressed state is fitted on the outside of the unwinding shaft (2) and located between the nut (15) and the baffle (14). A pad (17) is installed on the side of the first upright plate (41) facing the rotating disk (13). The surface of the pad (17) opposite to the first upright plate (41) is in frictional contact with the side surface of the rotating disk (13) opposite to the cloth roll (100).

2. The residual adhesive wiping mechanism according to claim 1, characterized in that: A motor (18) is installed on the side of the second upright plate (42) opposite to the winding shaft (3). The output shaft of the motor (18) passes through the second upright plate (42) and is connected to the winding shaft (3). The end of the winding shaft (3) connected to the output shaft of the motor (18) is rotatably mounted on the second upright plate (42) through at least one bearing (22).

3. The residual adhesive wiping mechanism according to claim 2, characterized in that: A metal disc (19) that can rotate with the winding shaft (3) is fitted on the outside of the shaft. Several sensing protrusions (191) are provided at equal intervals along the circumference at the edge of the metal disc (19). A sensor (20) that cooperates with the sensing protrusions (191) is installed on the second upright plate (42). The sensor (20) is electrically connected to the motor (18).

4. The residual adhesive wiping mechanism according to claim 1, characterized in that: The nut (15) is a wing nut.

5. The residual adhesive wiping mechanism according to claim 1, characterized in that: The rotating disk (13) has an annular protrusion (131) extending axially toward the baffle (14) in the center, and the cloth roll (100) is fitted onto the outside of the annular protrusion (131).

6. The residual adhesive wiping mechanism according to claim 1, characterized in that: The vertical cylinder (8) is installed on the side opposite to the unwinding shaft (2) of the first vertical plate (41) or on the side opposite to the winding shaft (3) of the second vertical plate (42).

7. The residual adhesive wiping mechanism according to claim 1, characterized in that: The strip plate (7) and the surface of the first vertical plate (41) opposite to the unwinding shaft (2) and / or the surface of the second vertical plate (42) opposite to the winding shaft (3) are connected by at least one set of slide rails (91) and sliders (92).

8. The residual adhesive wiping mechanism according to claim 1, characterized in that: The lower surface of the sponge block (11) is flush with the lower surface of the horizontal part (61) of the L-shaped movable block (6).

9. The residual adhesive wiping mechanism according to claim 1, characterized in that: The upper surface of the horizontal part (61) of the L-shaped movable block (6) has a guide groove (63) for the adhesive cloth section (103) to be embedded.

10. The residual adhesive wiping mechanism according to claim 9, characterized in that: The upper surface of the sponge block (11) is higher than the bottom surface of the guide groove (63).

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