Glue wiping device for wiping residual glue on needle head

Abstract

The utility model discloses a glue wiping device for wiping residual glue on a needle head. The glue wiping device comprises a bottom plate, a main mounting plate, a power module, a transmission module, a glue wiping module and an upper shell, the main mounting plate is fixedly arranged at the upper end of the bottom plate, and the main mounting plate is used for providing mounting parts for the transmission module and the glue wiping module; the power module is fixedly arranged above the outer sides of the bottom plate and the main mounting plate, and the power module is used for providing a power source for the whole frictioning machine; the transmission module is rotationally arranged on the main mounting plate and located between the power module and the glue wiping module, and the transmission module is used for transmitting output power of the power module to the glue wiping module; the glue wiping module is rotationally arranged on the main mounting plate and is used for removing glue liquid on the to-be-cleaned object; the upper shell is fixedly arranged at the upper end of the main mounting plate, the side wall of the upper shell is fixedly connected with the power module, and the upper shell is used for protecting an internal structure on the main mounting plate and providing a limiting part for rotation of the transmission module in the vertical direction.

Description

Technical Field

[0001] The utility model relates to the technical field of glue cleaning, in particular to a glue erasing device for erasing glue residual on a needle head. Background Art

[0002] In industrial production, a glue dispenser is an automated device used to precisely apply various types of glue, such as epoxy, UV glue, instant adhesive, and silicone, to products like electronic components and circuit boards. This equipment is widely used in industries such as electronics manufacturing, automotive, medical equipment, and aerospace to secure, seal, insulate, and waterproof products.

[0003] Since the glue has a high viscosity and solidifies quickly, it will remain near the needle nozzle due to the wall adhesion effect, affecting the subsequent dispensing quality.

[0004] In view of this, the inventor specially designed a glue erasing device for erasing glue residue on a needle tip, which resulted in the present case. Utility Model Content

[0005] The purpose of the utility model is to provide a glue erasing device for erasing residual glue on a needle head. The utility model is simple to operate, convenient for erasing residual glue on a needle head and cleaning waste glue, thereby improving the quality of glue dispensing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A glue erasing device for erasing residual glue on a needle tip comprises a base plate, a general mounting plate, a power module, a transmission module, a glue erasing module and an upper shell; the general mounting plate is fixedly arranged on the upper end of the base plate, and the general mounting plate is used to provide a mounting position for the transmission module and the glue erasing module; the power module is fixedly arranged on the upper outer side of the base plate and the general mounting plate, and the power module is used to provide a power source for the entire glue erasing machine; the transmission module is rotatably arranged on the general mounting plate and is located between the power module and the glue erasing module, and the transmission module is used to transmit the output power of the power module to the glue erasing module; the glue erasing module is rotatably arranged on the general mounting plate, and the glue erasing module is used to remove glue on the object to be cleaned; the upper shell is fixedly arranged on the upper end of the general mounting plate and the side wall of the upper shell is fixedly connected to the power module, and the upper shell is used to protect the internal structure on the general mounting plate and provide a limiting position for the vertical rotation of the transmission module.

[0008] Furthermore, the power module includes a fixed plate, a motor and a main bevel gear; the fixed plate is fixedly arranged on the outside of the base plate and the general installation and an output port through which the output shaft of the power supply motor passes is opened on the fixed plate; the motor is fixedly arranged on the fixed plate and the output shaft of the motor passes through the output port toward the general installation plate; the main bevel gear is sleeved on the end of the motor output shaft.

[0009] Furthermore, the transmission module includes a rotating shaft, a slave bevel gear, a driving gear and two ball bearings; the slave bevel gear is sleeved on the rotating shaft and is transmission-connected to the master bevel gear; the driving gear is sleeved on the rotating shaft below the slave bevel gear; the two ball bearings are respectively sleeved on the ends on both sides of the rotating shaft, and the two ball bearings are respectively embedded in the upper shell and the main mounting plate.

[0010] Furthermore, the eraser module includes a rotating device, a damping device and an eraser assembly; the rotating device is wrapped around the outside of the damping device, and the rotating device is used to receive the output power of the transmission module and drive the eraser assembly to rotate; the eraser assembly is fixedly arranged at the upper end of the damping device, and the eraser assembly rotates while erasing the glue on the needle.

[0011] Furthermore, the rotating device includes a driven tooth, a transmission tube, a limit bearing, an upper fixed ring and a lower fixed ring; the outer side of the driven tooth is connected to the output power part of the transmission module; the diameter of the transmission tube decreases in a step-by-step manner and is divided into three parts: upper, middle and lower. The tube body of the upper part of the transmission tube is fixedly connected to the upper end of the driven tooth, the tube body of the middle part of the transmission tube passes through the driven tooth, the tube body of the lower part of the transmission tube passes through the main mounting plate and the lower end of the transmission tube rests on the bottom plate; the limit bearing is sleeved on the transmission tube in the main mounting plate; the outer side of the upper fixed ring is embedded in the main mounting plate and the lower end of the upper fixed ring rests on the upper end of the limit bearing; the inner side of the lower fixed ring is embedded in the lower tube body of the transmission tube, and the upper end of the outer side of the lower fixed ring supports the inner side of the lower end of the limit bearing; the outer side of the lower end of the limit bearing rests on the main mounting plate.

[0012] Furthermore, the damping device includes a damping turntable and a turntable fixing shaft; the turntable fixing shaft is passed through the lower tube of the transmission tube and the lower end of the turntable fixing shaft is connected to the outside of the lower end of the base plate; the lower end of the damping turntable is fixedly connected to the upper end of the turntable fixing shaft and the damping turntable is located in the tube in the middle of the transmission tube; the upper end of the damping disc is fixedly connected to the eraser assembly, and the center of the damping turntable and the turntable fixing shaft is provided with a discharge channel for glue to flow out.

[0013] Furthermore, the eraser assembly includes an upper iris, a lower iris, four sliders, four positioning blocks, four pins and four eraser sheets; the outer edge of the upper iris is fixedly arranged at the upper end of the transmission tube and embedded in the upper shell; four sliding openings are circumferentially arranged in the middle of the upper iris to drive the slider to move, and a needle entrance port for the needle is opened in the center of the upper iris; the lower iris is arranged at the upper end of the damping turntable and located in the tube at the upper part of the transmission tube; the positioning blocks and sliders are arranged at the upper end of the lower iris and are arranged at intervals to form a circular distribution; the lower end of the positioning block is fixedly connected to the upper end of the lower iris; the slider can slide between the two positioning blocks; the pins are respectively fixedly arranged at the upper end of the slider; the eraser sheets are respectively fixedly arranged on the sliders inside the pins and move in and outward with the sliding; the upper ends of the pins are respectively embedded in the sliding openings on the upper iris, and the pins move back and forth in and out along the sliding openings; the four sliders fit inwardly to form a gap for the discharge of glue, and the gap is connected to the discharge channel.

[0014] Furthermore, the slider and the positioning block are in the shape of a dovetail groove, and the dovetail groove-shaped sliding and positioning block are used to limit the movement of the slider in the vertical direction.

[0015] Furthermore, the lower end edge of the turntable fixed shaft is embedded in the bottom plate.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects:

[0017] 1. The operation of the overall device of the utility model is simple. You only need to insert the needle from the needle entrance, and the iris mechanism can reciprocate to make the eraser remove the glue remaining on the needle. The user does not need too much professional knowledge to complete the cleaning work, thereby improving work efficiency.

[0018] 2. The utility model embeds the ball bearing and the limit bearing into the main mounting plate or the upper housing, thereby reducing the deviation of the rotation center of the rotating shaft, improving the stability and reliability of the device during power transmission, and extending the service life.

[0019] 3. The waste glue generated during the erasing process of the present invention can be discharged through the discharge channel in the erasing component. Since the diameter of the discharge channel is much larger than the diameter of the gap formed by the upper slider, the contamination of other components by the waste glue during the descending process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 For this utility model Figure 1 Schematic diagram with the upper shell removed;

[0022] Figure 3 For this utility model Figure 2 Schematic diagram with the upper iris and part of the positioning block removed;

[0023] Figure 4 This is a schematic top view of the utility model;

[0024] Figure 5 For this utility model Figure 4 Schematic cross-sectional view along section AA;

[0025] Figure 6 For this utility model Figure 5 A magnified schematic diagram of B.

[0026] The reference numerals in the figures are as follows:

[0027] 1. Bottom plate; 2. Main mounting plate; 3. Power module; 30. Fixed plate; 300. Output port; 31. Motor; 32. Main bevel gear; 4. Transmission module; 40. Rotating shaft; 41. Slave bevel gear; 42. Driving gear; 43. Ball bearing; 5. Glue wiper module; 50. Rotating device; 500. Driven gear; 501. Transmission tube; 502. Limit bearing; 503. Upper fixing ring; 504. Lower fixing ring; 51. Damping device; 510. Damping turntable; 511. Turntable fixing shaft; 512. Discharge channel; 52. Glue wiper assembly; 520. Upper iris; 5200. Sliding opening; 5201. Needle inlet; 521. Lower iris; 522. Slider; 523. Positioning block; 524. Pin; 525. Glue wiper; 526. Notch; 6. Upper shell. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] See also Figures 1 to 6, a glue erasing device for erasing residual glue on a needle tip, comprising a base plate 1, a general mounting plate 2, a power module 3, a transmission module 4, a glue erasing module 5 and an upper shell 6; the general mounting plate 2 is fixedly arranged on the upper end of the base plate 1, and the general mounting plate 2 is used to provide a mounting position for the transmission module 4 and the glue erasing module 5; the power module 3 is fixedly arranged above the outer side of the base plate 1 and the general mounting plate 2, and the power module 3 is used to provide a power source for the entire glue erasing machine; the transmission module 4 is rotatably arranged on the general mounting plate 2 and is located between the power module 3 and the glue erasing module 5, and the transmission module 4 is used to transmit the output power of the power module 3 to the glue erasing module 5; the glue erasing module 5 is rotatably arranged on the general mounting plate 2, and the glue erasing module 5 is used to remove the glue on the object to be cleaned; the upper shell 6 is fixedly arranged on the upper end of the general mounting plate 2 and the side wall of the upper shell 6 is fixedly connected to the power module 3, and the upper shell 6 is used to protect the internal structure on the general mounting plate 2 and provide a limiting position for the vertical rotation of the transmission module 4.

[0030] like Figure 2 As shown, the power module 3 includes a fixed plate 30, a motor 31 and a main bevel gear 32; the fixed plate 30 is fixedly arranged on the outside of the base plate 1 and the general installation, and an output port 300 is opened on the fixed plate 30, through which the output shaft of the power supply motor 31 passes; the motor 31 is fixedly arranged on the fixed plate 30, and the output shaft of the motor 31 passes through the output port 300 toward the general installation plate 2; the main bevel gear 32 is sleeved on the end of the output shaft of the motor 31; the motor 31 adopts a 42 stepper motor 31.

[0031] like Figure 2 、 Figure 3 and Figure 5 As shown, the transmission module 4 includes a rotating shaft 40, a slave bevel gear 41, a driving gear 42 and two ball bearings 43; the slave bevel gear 41 is sleeved on the rotating shaft 40 and is transmission-connected to the master bevel gear 32; the driving gear 42 is sleeved on the rotating shaft 40 below the slave bevel gear 41; the two ball bearings 43 are respectively sleeved on the ends on both sides of the rotating shaft 40, and the two ball bearings 43 are respectively embedded in the upper shell 6 and the main mounting plate 2.

[0032] like Figure 2 、 Figure 3 and Figure 6 As shown, the eraser module 5 includes a rotating device 50, a damping device 51 and an eraser assembly 52; the rotating device 50 is wrapped around the outside of the damping device 51, and the rotating device 50 is used to receive the output power of the transmission module 4 and drive the eraser assembly 52 to rotate; the eraser assembly 52 is fixedly arranged at the upper end of the damping device 51, and the eraser assembly 52 rotates while erasing the glue on the needle.

[0033] like Figure 6As shown, the rotating device 50 includes a driven gear 500, a transmission tube 501, a limit bearing 502, an upper fixed ring 503 and a lower fixed ring 504; the outer side of the driven gear 500 is connected to the output power part of the transmission module 4; the diameter of the transmission tube 501 decreases in a step-by-step manner and is divided into three parts: upper, middle and lower. The upper tube body of the transmission tube 501 is fixedly connected to the upper end of the driven gear 500, the middle tube body of the transmission tube 501 passes through the driven gear 500, and the lower tube body of the transmission tube 501 passes through The main mounting plate 2 and the lower end of the transmission tube 501 are against the base plate 1; the limit bearing 502 is sleeved on the transmission tube 501 in the main mounting plate 2; the outer side of the upper fixing ring 503 is embedded in the main mounting plate 2 and the lower end of the upper fixing ring 503 is against the upper end of the limit bearing 502; the inner side of the lower fixing ring 504 is embedded in the lower tube body of the transmission tube 501, and the outer upper end of the lower fixing ring 504 supports the inner side of the lower end of the limit bearing 502; the outer side of the lower end of the limit bearing 502 is against the main mounting plate 2.

[0034] like Figure 6 As shown, the damping device 51 includes a damping turntable 510 and a turntable fixing shaft 511; the turntable fixing shaft 511 is passed through the lower tube of the transmission tube 501 and the lower end of the turntable fixing shaft 511 is connected to the outside of the lower end of the base plate 1; the lower end of the damping turntable 510 is fixedly connected to the upper end of the turntable fixing shaft 511 and the damping turntable 510 is located in the tube in the middle of the transmission tube 501; the upper end of the damping disc is fixedly connected to the eraser assembly 52, and the damping turntable 510 and the turntable fixing shaft 511 are provided with a discharge channel 512 in the center for glue to flow out.

[0035] like Figure 6 As shown, the eraser assembly 52 includes an upper iris 520, a lower iris 521, four sliders 522, four positioning blocks 523, four pins 524 and four erasers 525; the outer edge of the upper iris 520 is fixedly set at the upper end of the transmission tube 501 and embedded in the upper shell 6, and the middle part of the upper iris 520 is circumferentially provided with four sliding openings 5200 for driving the sliders 522 to move. The center of the upper iris 520 is provided with a needle entry port 5201 for the needle to enter; the lower iris 521 is set at the upper end of the damping turntable 510 and is located in the tube at the upper part of the transmission tube 501; the positioning blocks 523 and the sliders 522 are set at the upper end of the lower iris 521 and are arranged at intervals. Forming a circular distribution; the lower end of the positioning block 523 is fixedly connected to the upper end of the lower iris 521; the slider 522 can slide between the two positioning blocks 523; the pins 524 are respectively fixedly set on the upper ends of the sliders 522; the eraser 525 is respectively fixedly set on the sliders 522 inside the pins 524 and moves in and outward directions along with the sliding; the upper ends of the pins 524 are respectively embedded in the sliding openings 5200 on the upper iris 520, and the pins 524 move back and forth in and out along the sliding openings 5200; the four sliders 522 fit inwardly to form a gap 526 for the discharge of glue, and the gap 526 is connected to the discharge channel 512.

[0036] Preferably, the slider 522 and the positioning block 523 are in a dovetail groove shape, and the dovetail groove-shaped sliding and positioning block 523 are used to limit the movement of the slider 522 in the vertical direction.

[0037] Preferably, the lower edge of the turntable fixing shaft 511 is embedded in the bottom plate 1 .

[0038] Preferably, the diameter of the discharge channel 512 is much larger than the diameter of the notch 526 formed by the upper slider 522 .

[0039] The basic principle of the present invention is to use an iris-like mechanism to complete the synchronous opening and closing of four sliders 522. When the sliders 522 open and close, they drive the erasers 525 to move. When the erasers 525 are closed to the minimum, the gap between the four erasers 525 is slightly smaller than the needle mouth. When the four erasers 525 continue to rotate, they will continuously sweep across the needle mouth, thereby completing the action of erasing glue.

[0040] The transmission principle of the present invention is as follows: the motor 31 drives the transmission module 4, thereby driving the rotation of the upper iris 520. The lower iris 521 is mounted on the damping dial 510. When the iris is not fully closed, the damping dial 510 applies a torque of 0.5 N·M to prevent the lower iris 521 from rotating with the slider 522 when it closes. When the slider 522 is fully closed, the eraser 525 begins to contact and squeeze the needle tip. When the iris is closed, the torque provided by the motor 31 exceeds 0.5 N·M, and the torque applied to the lower iris 521 exceeds the limit of the damping dial 510, causing it to begin rotating. At this point, the glue on the needle tip is scraped off by the eraser 525.

[0041] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A glue erasing device for erasing glue residue from a needle, characterized by: The invention comprises a bottom plate (1), a general installation plate (2), a power module (3), a transmission module (4), a gluing module (5) and an upper shell (6); the general installation plate (2) is fixedly arranged on the upper end of the bottom plate (1), and the general installation plate (2) is used to provide a mounting position for the transmission module (4) and the gluing module (5); the power module (3) is fixedly arranged above the outer sides of the bottom plate (1) and the general installation plate (2), and the power module (3) is used to provide a power source for the entire gluing machine; the transmission module (4) is rotatably arranged on the general installation plate (2) and is located at the power module (5). The invention relates to a method for manufacturing a cleaning device for cleaning a cleaning device comprising: a first housing (6) and a second housing (7) for cleaning a cleaning device; a second housing (8) for cleaning a cleaning device; a second housing (9) for cleaning a cleaning device; a second housing (10) for cleaning a cleaning device; a second housing (11) for cleaning a cleaning device; a second housing (12) for cleaning a cleaning device; a second housing (13) for cleaning a cleaning device; a second housing (14) for cleaning a cleaning device; a second housing (15) for cleaning a cleaning device; a second housing (16) for cleaning a cleaning device; a second housing (17) for cleaning a cleaning device; a second housing (18) for cleaning a cleaning device; a second housing (19) for cleaning a cleaning device; a second housing (20) for cleaning a cleaning device; a second housing (21) for cleaning a cleaning device; a second housing (22) for cleaning a cleaning device; a second housing (23) for cleaning a cleaning device; a second housing (24) for cleaning a cleaning device; a second housing (25) for cleaning a cleaning device; a second housing (26) for cleaning a cleaning device; a second housing (27) for cleaning a cleaning device; a second housing (28) for cleaning a cleaning device; a second housing (29) for cleaning a cleaning device; a second housing (30) for cleaning a cleaning device; a second housing (31) for cleaning a cleaning device; a second housing (32) for cleaning a cleaning device; a second housing (33) for cleaning a cleaning device; a second housing (34) for cleaning a cleaning device; a second housing (35) for cleaning a cleaning device; a second housing (36) for cleaning a cleaning device; a second housing (37) for cleaning a cleaning device; a second housing (38) for cleaning a cleaning device; a second housing (39) for cleaning a cleaning device; a second housing (4) for cleaning a cleaning device; a second housing (4) for cleaning a cleaning device; a second housing (6) for cleaning a cleaning device; a second housing (6) for cleaning a cleaning device; a second housing (6) for cleaning a cleaning device; 2. The glue erasing device for erasing glue residue on a needle tip according to claim 1, characterized in that: The power module (3) comprises a fixed plate (30), a motor (31) and a main bevel gear (32); the fixed plate (30) is fixedly arranged on the outside of the base plate (1) and the general installation, and an output port (300) is provided on the fixed plate (30) through which the output shaft of the power supply machine (31) passes; the motor (31) is fixedly arranged on the fixed plate (30) and the output shaft of the motor (31) passes through the output port (300) toward the general installation plate (2); the main bevel gear (32) is sleeved on the end of the output shaft of the motor (31).

3. The glue erasing device for erasing glue residue on a needle tip according to claim 2, characterized in that: The transmission module (4) comprises a rotating shaft (40), a slave bevel gear (41), a driving gear (42) and two ball bearings (43); the slave bevel gear (41) is sleeved on the rotating shaft (40) and is in transmission connection with the master bevel gear (32); the driving gear (42) is sleeved on the rotating shaft (40) below the slave bevel gear (41); the two ball bearings (43) are sleeved on the ends of both sides of the rotating shaft (40), and the two ball bearings (43) are respectively embedded in the upper housing (6) and the main mounting plate (2).

4. The glue erasing device for erasing glue residue on a needle tip according to claim 1, characterized in that: The eraser module (5) comprises a rotating device (50), a damping device (51) and an eraser assembly (52); the rotating device (50) is wrapped around the outside of the damping device (51), and the rotating device (50) is used to receive the output power of the transmission module (4) and drive the eraser assembly (52) to rotate; the eraser assembly (52) is fixedly arranged on the upper end of the damping device (51), and the eraser assembly (52) erases the glue on the needle tip while rotating.

5. The glue erasing device for erasing glue residue on a needle tip according to claim 4, characterized in that: The rotating device (50) comprises a driven tooth (500), a transmission tube (501), a limit bearing (502), an upper fixed ring (503) and a lower fixed ring (504); the outer side of the driven tooth (500) is connected to the output power part of the transmission module (4); the diameter of the transmission tube (501) decreases in a step-by-step manner and is divided into three parts: upper, middle and lower parts; the upper part of the transmission tube (501) is fixedly connected to the upper end of the driven tooth (500); the middle part of the transmission tube (501) passes through the driven tooth (500); and the lower part of the transmission tube (501) passes through the main mounting plate ( 2) and the lower end of the transmission tube (501) abuts against the bottom plate (1); the limit bearing (502) is sleeved on the transmission tube (501) in the main mounting plate (2); the outer side of the upper fixing ring (503) is embedded in the main mounting plate (2) and the lower end of the upper fixing ring (503) abuts against the upper end of the limit bearing (502); the inner side of the lower fixing ring (504) is embedded in the lower tube body of the transmission tube (501), and the outer upper end of the lower fixing ring (504) supports the inner side of the lower end of the limit bearing (502); the outer side of the lower end of the limit bearing (502) abuts against the main mounting plate (2).

6. The glue erasing device for erasing glue residue on a needle tip according to claim 5, characterized in that: The damping device (51) comprises a damping turntable (510) and a turntable fixing shaft (511); the turntable fixing shaft (511) is passed through the lower tube of the transmission tube (501), and the lower end of the turntable fixing shaft (511) is communicated with the outside of the lower end of the bottom plate (1); the lower end of the damping turntable (510) is fixedly connected to the upper end of the turntable fixing shaft (511), and the damping turntable (510) is located in the tube in the middle of the transmission tube (501); the upper end of the damping plate is fixedly connected to the eraser assembly (52), and a discharge channel (512) for glue to flow out is provided in the center of the damping turntable (510) and the turntable fixing shaft (511).

7. The glue erasing device for erasing glue residue on a needle according to claim 6, characterized in that: The eraser assembly (52) includes an upper iris (520), a lower iris (521), four sliders (522), four positioning blocks (523), four pins (524) and four eraser sheets (525); the outer edge of the upper iris (520) is fixedly arranged at the upper end of the transmission tube (501) and embedded in the upper shell (6); four sliding openings (5200) for driving the sliders (522) to move are circumferentially arranged in the middle of the upper iris (520); a needle entry port (5201) for the needle to enter is opened in the center of the upper iris (520); the lower iris (521) is arranged at the upper end of the damping turntable (510) and is located in the upper tube of the transmission tube (501); the positioning blocks (523) and the sliders (522) are arranged at the upper end of the lower iris (521) and are arranged at intervals. The positioning block (523) is fixedly connected to the upper end of the lower iris (521); the slider (522) can slide between the two positioning blocks (523); the pins (524) are fixedly arranged on the upper ends of the sliders (522); the eraser (525) is fixedly arranged on the sliders (522) inside the pins (524) and moves in the inward and outward directions along with the sliding; the upper ends of the pins (524) are respectively embedded in the sliding openings (5200) on the upper iris (520), and the pins (524) move back and forth inward and outward along the sliding openings (5200); the four sliders (522) are fitted inward to form a gap (526) for discharging the glue liquid, and the gap (526) is connected to the discharge channel (512).

8. The glue erasing device for erasing glue residue on a needle tip according to claim 7, characterized in that: The sliding block (522) and the positioning block (523) are in the shape of a dovetail groove. The sliding block and the positioning block (523) in the shape of a dovetail groove are used to limit the movement of the sliding block (522) in the vertical direction.

9. The glue erasing device for erasing glue residue on a needle according to claim 6, characterized in that: The lower edge of the turntable fixed shaft (511) is embedded in the bottom plate (1).

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