Bonding layer gluing device for body temperature patch production

Abstract

The utility model belongs to the technical field of body temperature patch production equipment, and particularly relates to a bonding layer gluing device for body temperature patch production, which comprises a base, a pressure pump is arranged on one side of the glue storage tank and fixedly installed on the fixing support, the other end of the connecting pipe is fixedly connected to the inlet end of the pressure pump, the outlet end of the pressure pump is fixedly connected with a hose, a spraying box is arranged on the lower portion in the fixing support, and supporting rods are arranged in the two ends of the fixing support. The lower end of the supporting rod is fixedly installed on the base, the upper end of the supporting rod is fixedly installed on the fixing support, the two ends of the spraying box are slidably installed on the supporting rod, the spraying pipe is fixedly installed on the upper portion of the spraying box, and the multiple nozzles are fixedly installed at the bottom of the spraying pipe in an array mode. A gluing roller is arranged below the spray pipe; the flow and the pressure of the glue are accurately controlled by arranging the pressure pump, so that the gluing uniformity and the gluing precision are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature patch production equipment, in particular to an adhesive layer gluing device for temperature patch production. Background Technique

[0002] A temperature patch is an advanced wearable continuous temperature measurement device, whose main function is not only limited to real-time temperature monitoring, but also has multiple advanced features. The adhesive layer gluing device for temperature patch production is used to accurately apply an adhesive to form an effective and uniform adhesive layer during the production of temperature patches.

[0003] A gluing device is a common automated device in industrial production, mainly used to precisely control the application and potting processes of glue, paint or other liquids. The working principle of the gluing device is mainly to achieve precise control of the gluing process through a mechanical structure in cooperation with a precise electrical control system, so as to improve production efficiency and gluing quality.

[0004] In the production of the existing adhesive layer gluing device for temperature patch production, the gluing roller is directly immersed in the glue solution, and the glue solution is lifted and coated on the object by the rotation of the roller. If the glue solution concentration is uneven or the rotation speed of the gluing roller is unstable, it may lead to uneven gluing; therefore, an adhesive layer gluing device for temperature patch production is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the existing technology, in the production of the existing adhesive layer gluing device for temperature patch production, the gluing roller is directly immersed in the glue solution, and the glue solution is lifted and coated on the object by the rotation of the roller. If the glue solution concentration is uneven or the rotation speed of the gluing roller is unstable, it may lead to the problem of uneven gluing. The utility model proposes an adhesive layer gluing device for temperature patch production.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A glue coating device for the adhesive layer in the production of a body temperature patch according to the present utility model comprises a base; a fixed bracket is fixedly installed on the upper part of the center of the base, and a first cylinder is fixedly installed on both sides of the top of the fixed bracket. A glue storage tank is fixedly installed on the top of the fixed bracket. One side of the upper end of the glue storage tank is fixedly connected with a feed pipe, and the bottom of the glue storage tank is fixedly connected with a discharge pipe. A control valve is arranged in the discharge pipe. One side of the upper end of the discharge pipe is fixedly connected with a connecting pipe. A pressure pump is arranged on one side of the glue storage tank and fixedly installed on the fixed bracket. The other end of the connecting pipe is fixedly connected to the inlet end of the pressure pump. The outlet end of the pressure pump is fixedly connected with a hose. A spraying box is arranged below the interior of the fixed bracket. Sliding holes are opened on both sides of both ends of the spraying box. Support rods are arranged inside both ends of the fixed bracket. The lower end of the support rod is fixedly installed on the base, and the upper end is fixedly installed on the fixed bracket. Both ends of the spraying box are slidably installed on the support rods. A rotary motor is fixedly installed on the lower side of one end of the spraying box. A spray pipe is fixedly installed on the upper part of the spraying box. A plurality of nozzles are fixedly installed in an array at the bottom of the spray pipe. The other end of the hose is fixedly connected to the spray pipe. A glue coating roller is arranged below the spray pipe. Both ends of the glue coating roller are rotatably installed in the spraying box through bearings. The rotating shaft of the rotary motor is fixedly connected to one end of the glue coating roller. Activity plates are arranged on both sides of the glue coating roller. The activity plates are slidably arranged in the spraying box. A unwind roller is arranged on one side of the fixed bracket and rotatably installed on the upper part of the base. By setting a pressure pump, the flow rate and pressure of the glue are precisely controlled to ensure the uniformity and accuracy of glue coating.

[0007] Preferably, a stirring motor is fixedly installed on the top of the glue storage tank. A stirring shaft is arranged inside the glue storage tank. The upper end of the stirring shaft is rotatably installed on the top of the glue storage tank through a bearing and fixedly connected to the rotating shaft of the stirring motor. A heat preservation sleeve is fixedly installed around the outside of the glue storage tank. A heating wire is spirally arranged between the heat preservation sleeve and the glue storage tank. By setting the stirring shaft and the heating wire, the stirring motor drives the stirring shaft to rotate in the glue storage tank, effectively preventing the glue from precipitating or solidifying during long-term storage, ensuring the uniform mixing of the glue, and improving the use effect.

[0008] Preferably, support plates are arranged between the unwind roller and both ends of the fixed bracket. Mounting seats are arranged on the upper parts of the support plates. Tension rollers are rotatably installed in both the mounting seats and the support plates. Limit rods are fixedly installed on both sides of the top of the support plates. Both sides of the mounting seats are slidably installed on the limit rods. Compression springs are arranged between the mounting seats and the top ends of the limit rods and sleeved on the limit rods. By setting the compression springs, the mounting seats and the tension rollers can be finely adjusted up and down on the limit rods, enabling the tension rollers to automatically adjust their positions according to the thickness and tension of the material, so as to maintain an appropriate tension of the material during the unwinding process.

[0009] Preferably, adjusting plates are arranged above both ends of the spraying box. The adjusting plates are slidably arranged inside both ends of the fixed brackets. Through holes are formed in the upper parts of both ends of the adjusting plates. Both ends of the adjusting plates are slidably mounted on the upper ends of the support rods. The piston rod of the first cylinder is fixedly connected to the top of the adjusting plate. Pressure springs are arranged between the adjusting plates and both ends of the spraying box and sleeved on the upper ends of the support rods. By arranging the adjusting plates and the pressure springs, the spraying box can be finely adjusted up and down according to the coating requirements to adapt to materials with different thicknesses and spraying requirements.

[0010] Preferably, second cylinders are fixedly mounted on both sides of both ends of the spraying box. The front ends of the piston rods of the second cylinders are fixedly connected to the movable plates. Slide rods are fixedly mounted on both lower ends of the movable plates. The other ends of the slide rods are slidably mounted on the spraying box. By arranging the second cylinders to adjust the distance between the movable plates and the coating rollers, the glue liquid on the surface of the glue applying roller is leveled by the movable plates, making the glue coating more uniform.

[0011] Preferably, an installation bracket is arranged on the other side of the fixed bracket. A trowel is slidably mounted inside the installation bracket. A sliding cylinder is fixedly mounted in the middle of the top of the trowel. A threaded groove is formed on the inner wall of the sliding cylinder. A regulating motor is fixedly mounted in the center of the top of the installation bracket. A lead screw is arranged inside the installation bracket. The upper end of the lead screw is rotatably mounted on the top of the installation bracket through a bearing and fixedly connected to the rotating shaft of the regulating motor. The lower end of the lead screw slides inside the sliding cylinder. By arranging the cooperation of the trowel with the sliding cylinder and the lead screw, fine adjustment up and down can be carried out under the drive of the regulating motor to adapt to coatings with different thicknesses and coating requirements.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. When the glue applying device is used in the production of the body temperature stickers, first, the base material of the body temperature sticker is unwound by the unwinding roller, then one end of the base material passes through between the two tension rollers and is then placed directly below the glue applying roller. At the same time, the pressure pump is started to extract the glue liquid inside the glue storage tank through the connecting pipe. The glue liquid enters the spray pipe through the hose and is then evenly sprayed onto the upper side of the glue applying roller through the nozzle. According to the required glue coating thickness, the first cylinder is started to push the movable plate to move towards both sides of the glue applying roller inside the spraying box, and the rotating motor is started to drive the glue applying roller to rotate. The movable plate levels the unevenly sprayed glue liquid on the glue applying roller. The glue applying roller rotates to coat the glue liquid on the surface of the base material. The structure design of setting the pressure pump to precisely control the flow rate and pressure of the glue ensures the uniformity and precision of the glue coating, realizes the function of controlling the spraying amount of the glue liquid, solves the problem that in the production of the existing glue applying device for the adhesive layer in the production of body temperature stickers, the glue applying roller is directly immersed in the glue liquid and the glue liquid is brought up and coated on the object by the rotation of the roller. If the glue liquid concentration is uneven or the rotation speed of the glue applying roller is unstable, it may lead to uneven glue coating, and improves the uniformity of the glue coating. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of the feeding end of the glue application device;

[0016] Figure 2 It is a schematic structural diagram of the discharging end of the glue application device;

[0017] Figure 3 It is a schematic structural diagram of the glue application mechanism;

[0018] Figure 4 It is a schematic structural diagram of the tensioning mechanism;

[0019] Figure 5 It is a schematic structural diagram of the leveling mechanism.

[0020] In the figure: 1, base; 2, fixed bracket; 3, glue storage tank; 4, stirring motor; 5, feeding pipe; 6, discharging pipe; 7, control valve; 8, pressure pump; 9, connecting pipe; 10, hose; 11, stirring shaft; 12, heat preservation sleeve; 13, electric heating wire; 14, first cylinder; 15, spray pipe; 16, nozzle; 17, support rod; 18, adjusting plate; 19, spraying box; 20, pressure spring; 21, glue application roller; 22, movable plate; 23, second cylinder; 24, sliding rod; 25, rotating motor; 26, unwinding roller; 27, support plate; 28, mounting seat; 29, tensioning roller; 30, limiting rod; 31, extrusion spring; 32, mounting bracket; 33, adjusting motor; 34, trowel; 35, lead screw; 36, sliding cylinder. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figures 1-5As shown in the figure, an adhesive layer coating device for the production of body temperature stickers includes a base 1; a fixed bracket 2 is fixedly installed on the upper part of the center of the base 1, and a first cylinder 14 is fixedly installed on both sides of the top of the fixed bracket 2. A glue storage tank 3 is fixedly installed on the top of the fixed bracket 2. One side of the upper end of the glue storage tank 3 is fixedly connected with a feed pipe 5, and the bottom of the glue storage tank 3 is fixedly connected with a discharge pipe 6. A control valve 7 is arranged in the discharge pipe 6. One side of the upper end of the discharge pipe 6 is fixedly connected with a connecting pipe 9. A pressure pump 8 is arranged on one side of the glue storage tank 3 and fixedly installed on the fixed bracket 2. The other end of the connecting pipe 9 is fixedly connected to the inlet end of the pressure pump 8. The outlet end of the pressure pump 8 is fixedly connected with a hose 10. A spraying box 19 is arranged below the inside of the fixed bracket 2. Slide holes are opened on both sides of both ends of the spraying box 19. Support rods 17 are arranged inside both ends of the fixed bracket 2. The lower end of the support rod 17 is fixedly installed on the base 1, and the upper end is fixedly installed on the fixed bracket 2. Both ends of the spraying box 19 are slidably installed on the support rods 17. A rotary motor 25 is fixedly installed on the lower side of one end of the spraying box 19. A spray pipe 15 is fixedly installed on the upper part of the spraying box 19. A plurality of nozzles 16 are fixedly installed in an array at the bottom of the spray pipe 15. The other end of the hose 10 is fixedly connected to the spray pipe 15. A glue coating roller 21 is arranged below the spray pipe 15. Both ends of the glue coating roller 21 are rotatably installed in the spraying box 19 through bearings. The rotating shaft of the rotary motor 25 is fixedly connected to one end of the glue coating roller 21. Movable plates 22 are arranged on both sides of the glue coating roller 21. The movable plates 22 are slidably arranged in the spraying box 19. A unwind roller 26 is arranged on one side of the fixed bracket 2 and rotatably installed on the upper part of the base 1; When working, when using the coating device to produce body temperature stickers, first unwind the base material of the body temperature sticker through the unwind roller 26, then pass one end of the base material through between two tension rollers 29, and then place it directly below the glue coating roller 21. At the same time, start the pressure pump 8 to extract the glue liquid inside the glue storage tank 3 through the connecting pipe 9. The glue liquid enters the spray pipe 15 through the hose 10, and then is evenly sprayed onto the upper side of the glue coating roller 21 through the nozzles 16. According to the required glue coating thickness, start the second cylinder 23 to push the movable plates 22 to move towards both sides of the glue coating roller 21 in the spraying box 19. Start the rotary motor 25 to drive the glue coating roller 21 to rotate. The movable plates 22 level the unevenly sprayed glue liquid on the glue coating roller 21. The glue coating roller 21 rotates to coat the glue liquid on the surface of the base material. The pressure pump 8 is set to precisely control the flow rate and pressure of the glue to ensure the uniformity and accuracy of the glue coating.

[0023] A stirring motor 4 is fixedly installed on the top of the glue storage tank 3. A stirring shaft 11 is arranged inside the glue storage tank 3. The upper end of the stirring shaft 11 is rotatably installed on the top of the glue storage tank 3 through a bearing and is fixedly connected to the rotating shaft of the stirring motor 4. A heat preservation sleeve 12 is fixedly installed around the outside of the glue storage tank 3. An electric heating wire 13 is spirally arranged between the heat preservation sleeve 12 and the glue storage tank 3. During operation, when using the glue coating device to produce the body temperature stickers, start the stirring motor 4. The rotating shaft of the stirring motor 4 drives the stirring shaft 11 to rotate to stir the glue liquid in the glue storage tank 3, preventing the materials inside the glue liquid from depositing and affecting the glue coating quality. Start the electric heating wire 13. The electric heating wire 13 heats the glue storage tank 3 to prevent the glue liquid from solidifying. At the same time, the heat preservation sleeve 12 is used to keep the glue storage tank 3 warm and prevent heat loss.

[0024] Support plates 27 are arranged between both ends of the unwinding roller 26 and the fixed brackets 2. Mounting seats 28 are arranged on the upper parts of the support plates 27. Tension rollers 29 are rotatably installed in both the mounting seats 28 and the support plates 27. Limit rods 30 are fixedly installed on both sides of the top of the support plates 27. The two sides of the mounting seats 28 are respectively slidably installed on the limit rods 30. Compression springs 31 are arranged between the tops of the mounting seats 28 and the limit rods 30 and are sleeved on the limit rods 30. During operation, when using the glue coating device to produce the body temperature stickers, unwind the base material through the unwinding roller 26. Pass one end of the base material through between the two tension rollers 29. The base material pushes the tension roller 29 above the support plate 27 to drive the mounting seat 28 to slide on the limit rod 30, and at the same time compress the compression spring 31, so that the tension roller 29 can automatically adjust its position according to the thickness and tension of the material, thereby keeping the material having an appropriate tension during the unwinding process.

[0025] Adjusting plates 18 are arranged above both ends of the spraying box 19. The adjusting plates 18 are slidably arranged inside both ends of the fixed brackets 2. Through holes are opened in the upper parts of both ends of the adjusting plates 18. Both ends of the adjusting plates 18 are slidably installed on the upper ends of the support rods 17. The piston rod of the first cylinder 14 is fixedly connected to the top of the adjusting plate 18. Compression springs 20 are arranged between the adjusting plates 18 and both ends of the spraying box 19 and are sleeved on the upper ends of the support rods 17. During operation, when using the glue coating device to produce the body temperature stickers, start the first cylinder 14 to push the adjusting plate 18 to slide downward on the support rod 17. The adjusting plate 18 compresses the compression spring 20. The compressed spring 20 applies pressure to both sides of the spraying box 19, and adjusts the pressure during the glue coating process of the glue coating roller 21 through the adjusting plate 18 to make the glue coating more uniform.

[0026] On both sides of the two ends of the spraying box 19, second cylinders 23 are fixedly installed. The front ends of the piston rods of the second cylinders 23 are fixedly connected to the movable plate 22. At both ends of the lower side of the movable plate 22, slide rods 24 are fixedly installed. The other ends of the slide rods 24 are slidably installed on the spraying box 19. During operation, when using the gluing device to produce the temperature patch, start the second cylinder 23. The piston rod of the second cylinder 23 pushes the movable plate 22 to slide on the spraying box 19. At the same time, the movable plate 22 drives the slide rod 24 to slide in the spraying box 19. Adjust the distance between the movable plate 22 and the gluing roller 21 according to the gluing thickness, and level the glue liquid on the surface of the gluing roller 21 after spraying, so that the gluing is more uniform.

[0027] On the other side of the fixed bracket 2, there is an installation bracket 32. A trowel 34 is slidably installed in the installation bracket 32. In the middle of the top of the trowel 34, a sliding cylinder 36 is fixedly installed. A threaded groove is formed on the inner wall of the sliding cylinder 36. In the center of the top of the installation bracket 32, an adjustment motor 33 is fixedly installed. A lead screw 35 is arranged in the installation bracket 32. The upper end of the lead screw 35 is rotatably installed at the top of the installation bracket 32 through a bearing and is fixedly connected to the rotating shaft of the adjustment motor 33. The lower end of the lead screw 35 slides in the sliding cylinder 36. During operation, when using the gluing device to produce the temperature patch, start the adjustment motor 33 to drive the lead screw 35 to rotate. The lead screw 35 rotates in the sliding cylinder 36, driving the sliding cylinder 36 to move up and down. The sliding cylinder 36 drives the trowel 34 to slide up and down in the installation bracket 32. Adjust the height of the trowel 34 according to the thickness of the glue liquid applied to the substrate, and level the glue liquid that is not evenly applied on the upper part of the substrate through the trowel 34.

[0028] Working principle: When using the gluing device to produce the temperature patch, first, the temperature patch substrate is fed by the unwinding roller 26. Then one end of the substrate passes through between the two tension rollers 29 and is placed directly below the gluing roller 21. At the same time, start the pressure pump 8 to extract the glue liquid in the glue storage tank 3 through the connecting pipe 9. The glue liquid enters the spray pipe 15 through the hose 10 and is evenly sprayed onto the upper side of the gluing roller 21 through the nozzle 16. According to the required gluing thickness, start the second cylinder 23 to push the movable plate 22 to move towards both sides of the gluing roller 21 in the spraying box 19. Start the rotating motor 25 to drive the gluing roller 21 to rotate. The movable plate 22 levels the unevenly sprayed glue liquid on the gluing roller 21. The gluing roller 21 rotates to coat the glue liquid on the surface of the substrate. The pressure pump 8 is set to precisely control the flow rate and pressure of the glue to ensure the uniformity and accuracy of gluing.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. An adhesive layer coating device for producing temperature stickers, characterized in that: It includes a base (1); a fixing bracket (2) is fixedly installed at the upper center of the base (1), one - cylinder (14) is fixedly installed on both sides of the top of the fixing bracket (2), a glue storage tank (3) is fixedly installed at the top of the fixing bracket (2), a feed pipe (5) is fixedly connected to one side of the upper end of the glue storage tank (3), a discharge pipe (6) is fixedly connected to the bottom of the glue storage tank (3), a control valve (7) is arranged in the discharge pipe (6), a connecting pipe (9) is fixedly connected to one side of the upper end of the discharge pipe (6), a pressure pump (8) is arranged on one side of the glue storage tank (3) and fixedly installed on the fixing bracket (2), the other end of the connecting pipe (9) is fixedly connected to the inlet end of the pressure pump (8), the outlet end of the pressure pump (8) is fixedly connected to a hose (10), a spraying box (19) is arranged below the inside of the fixing bracket (2), sliding holes are opened on both sides of both ends of the spraying box (19), support rods (17) are arranged inside both ends of the fixing bracket (2), the lower ends of the support rods (17) are fixedly installed on the base (1), the upper ends are fixedly installed on the fixing bracket (2), both ends of the spraying box (19) are slidably installed on the support rods (17), a rotating motor (25) is fixedly installed on the lower side of one end of the spraying box (19), a spray pipe (15) is fixedly installed on the upper part of the spraying box (19), a plurality of nozzles (16) are fixedly installed in an array at the bottom of the spray pipe (15), the other end of the hose (10) is fixedly connected to the spray pipe (15), a glue - applying roller (21) is arranged below the spray pipe (15), both ends of the glue - applying roller (21) are rotatably installed in the spraying box (19) through bearings, the rotating shaft of the rotating motor (25) is fixedly connected to one end of the glue - applying roller (21), movable plates (22) are arranged on both sides of the glue - applying roller (21), the movable plates (22) are slidably arranged in the spraying box (19), a unwind roller (26) is arranged on one side of the fixing bracket (2) and rotatably installed on the upper part of the base (1).

2. The adhesive layer coating device for producing a body temperature patch according to claim 1, wherein: A stirring motor (4) is fixedly installed at the top of the glue storage tank (3), a stirring shaft (11) is arranged inside the glue storage tank (3), the upper end of the stirring shaft (11) is rotatably installed at the top of the glue storage tank (3) through a bearing and fixedly connected to the rotating shaft of the stirring motor (4), a heat - insulating sleeve (12) is fixedly installed around the outside of the glue storage tank (3), and an electric heating wire (13) is spirally arranged between the heat - insulating sleeve (12) and the glue storage tank (3).

3. A glue coating device for the adhesive layer in the production of body temperature stickers according to claim 1, characterized in that: Support plates (27) are arranged between both ends of the unwind roller (26) and the fixing bracket (2), mounting seats (28) are arranged on the upper parts of the support plates (27), tensioning rollers (29) are rotatably installed in both the mounting seats (28) and the support plates (27), limiting rods (30) are fixedly installed on both sides of the top of the support plates (27), both sides of the mounting seats (28) are slidably installed on the limiting rods (30), and compression springs (31) are arranged between the top ends of the mounting seats (28) and the limiting rods (30) and sleeved on the limiting rods (30).

4. A glue coating device for the adhesive layer in the production of body temperature stickers according to claim 1, characterized in that: Adjusting plates (18) are provided above both ends of the spraying box (19). The adjusting plates (18) are slidably arranged inside both ends of the fixed brackets (2). Through holes are formed in the upper parts of both ends of the adjusting plates (18). Both ends of the adjusting plates (18) are slidably mounted on the upper ends of the support rods (17). The piston rod of the first cylinder (14) is fixedly connected to the top of the adjusting plate (18). Pressure springs (20) are arranged between the adjusting plates (18) and both ends of the spraying box (19) and are sleeved on the upper ends of the support rods (17).

5. A glue coating device for the adhesive layer in the production of a body temperature patch, characterized in that: Second cylinders (23) are fixedly mounted on both sides of both ends of the spraying box (19). The front ends of the piston rods of the second cylinders (23) are fixedly connected to the movable plates (22). Slide rods (24) are fixedly mounted on both lower ends of the movable plates (22). The other ends of the slide rods (24) are slidably mounted on the spraying box (19).

6. The adhesive layer coating device for producing body temperature stickers according to claim 1, characterized in that: An installation bracket (32) is arranged on the other side of the fixed bracket (2). A trowel (34) is slidably mounted inside the installation bracket (32). A sliding cylinder (36) is fixedly mounted in the middle of the top of the trowel (34). A threaded groove is formed on the inner wall of the sliding cylinder (36). An adjusting motor (33) is fixedly mounted at the center of the top of the installation bracket (32). A lead screw (35) is arranged inside the installation bracket (32). The upper end of the lead screw (35) is rotatably mounted at the top of the installation bracket (32) through a bearing and is fixedly connected to the rotating shaft of the adjusting motor (33). The lower end of the lead screw (35) slides inside the sliding cylinder (36).

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