Rubber paste hot melt glue quantitative spraying and scraping device

Abstract

The utility model relates to pharmaceutical plaster technical field discloses a kind of rubber plaster hot melt glue quantitative spraying and scraping device, including workbench, and symmetrical electric slide rail and clamping piece are installed on the top surface of workbench, and non-slip mat and control panel are installed on the top surface of workbench, and the sliding part top surface of electric slide rail is fixedly provided with glue tank, drying machine and support frame, coating thickness gauge is installed on glue tank, and control panel electric signal connects glue tank, drying machine and coating thickness gauge, the bottom surface of glue tank is installed with fan-shaped atomizing nozzle, and scraping structure is movably arranged on support frame, and scraping structure includes lead screw, top block, scraper and material-accumulating plate, and the displacement of material-accumulating plate on both sides of top block is pressed down, the range of gluing is adapted and limited, and the range of self scraping is changed by the deflection of scraper driven by sliding block of two sides of material-accumulating plate moving simultaneously, to avoid overflow after scraping glue, avoid causing waste.

Description

Technical Field

[0001] This utility model belongs to the field of pharmaceutical ointment technology, specifically, it relates to a device for quantitative spraying and leveling of hot melt adhesive for rubber ointments. Background Technology

[0002] Rubber plaster is a topical dosage form in which a drug or herbal extract is mixed with a rubber-based matrix and then applied to a backing material. In the pharmaceutical field, the adhesion quality between the plaster and the substrate is ensured by precisely controlling the amount of hot melt adhesive sprayed; and the overall performance and appearance quality of the product are improved by smoothing the surface of the hot melt adhesive.

[0003] The prior art discloses a hot melt adhesive coating and bonding machine (CN222197608U), including a worktable, a frame set on the upper part of the worktable, and the frame slidably connected to the worktable; the frame is divided into a melting part and a coating part; electric slide rails are set on opposite sides of the melting part, and a melting tank is set between the two electric slide rails. This utility model uses partition plates to divide the inside of the melting tank into several equally spaced compartments. Heating tubes between the partition plates heat and melt the hot melt adhesive rods, so that the heating tubes simultaneously heat the hot melt adhesive rods into liquid hot melt adhesive, and then the molten hot melt adhesive flows through the dispensing nozzles onto the material surface on the worktable. The hot melt adhesive flows out at equal and uniform intervals. The soft adhesive material passes through the melting part and the coating part of the frame. As the adhesive falls from the dispensing nozzles onto the material surface on the worktable, the soft adhesive material adheres to it. Then, a scraper scrapes the top surface.

[0004] Research revealed that the existing technology uses a one-piece scraper design, which cannot control the scraping range according to the amount of adhesive sprayed, thus easily leading to excessive scraping of the adhesive and causing large-scale overflow, resulting in waste. At the same time, the existing technology's partition plate structure can only achieve coating amount control, which cannot meet the pharmacopoeia's requirements for patch uniformity and lacks precise quantitative control.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A device for metering and leveling rubber paste hot melt adhesive, comprising:

[0008] The workbench has a collection groove on its top surface. Electric slide rails and clamping components are symmetrically installed on the top surface of the workbench. Anti-slip pads and control panels are installed on the top surface of the workbench. The anti-slip pads are located between the two clamping components. A melting tank, a dryer, and a support frame are fixedly installed on the top surface of the sliding component of the electric slide rail. A coating thickness gauge is installed on the melting tank. The control panel is electrically connected to the melting tank, the dryer, and the coating thickness gauge. A fan-shaped atomizing nozzle is installed on the bottom surface of the melting tank.

[0009] A leveling structure is movably mounted on a support frame. The leveling structure includes a lead screw, a jacking block, a scraper, and a material gathering plate. Two material gathering plates are symmetrically arranged, and both material gathering plates are movably mounted on the support frame. The scraper is movably mounted between the two material gathering plates. The jacking block is movably mounted between the support frame and the lead screw. The lead screw is rotatably mounted on the support frame.

[0010] In a preferred embodiment of this utility model, a temperature sensor, a liquid level sensor, and a high-pressure pump are installed inside the melt glue tank. The temperature sensor and the liquid level sensor are located at one end of the melt glue tank, and the high-pressure pump is located at the other end of the melt glue tank. The input end of the high-pressure pump is connected to the inside of the melt glue tank, and the output end of the high-pressure pump is connected to the fan-shaped atomizing nozzle. The control panel is electrically connected to the temperature sensor, the liquid level sensor, and the high-pressure pump. The high-pressure pump is electrically connected to a coating thickness gauge, which is positioned directly opposite the fan-shaped atomizing nozzle.

[0011] In a preferred embodiment of this utility model, the melt box and the dryer are symmetrically arranged around the support frame, which is an arched structure. A motor is fixedly installed at the top of one end of the support frame, and the output end of the motor is connected to the top of the lead screw. The control panel is electrically connected to the motor, and the coating thickness gauge is electrically connected to the motor.

[0012] In a preferred embodiment of this utility model, square grooves are provided on both inner walls of the support frame, and the jacking block is an inverted trapezoidal block that is slidably disposed between the two square grooves.

[0013] In a preferred embodiment of this utility model, one end of the actuating block is threaded into the lead screw, and the bottom inclined surface of the actuating block abuts against the material plates on both sides.

[0014] In a preferred embodiment of the present invention, two support rods are symmetrically fixed at the bottom of the support frame, and the two aggregate plates are slidably disposed at both ends of the support rods. A pair of springs are fixedly disposed between the two aggregate plates and the support frame, and the springs are sleeved on the support rods. The support frame is elastically connected to the aggregate plates through the springs.

[0015] In a preferred embodiment of this utility model, rotating grooves are provided on both sides of the scraper, and sliding grooves are provided on both sides of the material gathering plate. A slider is slidably disposed in the sliding groove, and one end of the slider is hinged in the rotating groove.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By setting up a leveling structure, the displacement of the material plates on both sides is achieved by pressing down the top block, thereby adapting to and limiting the application range of the adhesive. At the same time, the moving material plates on both sides drive the scraper to deflect through the slider, changing the leveling range of the adhesive. This avoids overflow of the adhesive after leveling, thus preventing waste.

[0018] 2. By setting up a high-pressure pump and a coating thickness gauge, automated quantitative spraying is achieved, and the leveling range is controlled by a linkage scraping structure. The fan-shaped atomizing nozzle is used to evenly coat and cover the coating to meet the requirements of uniformity of the coating, while improving the accuracy of the coating amount.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a top view of the entire utility model;

[0022] Figure 2 This is a half-sectional schematic diagram of the scraping structure of this utility model;

[0023] Figure 3 This is a top cross-sectional view of the melt box in this utility model;

[0024] Figure 4 This is a partial structural schematic diagram of the present invention;

[0025] Figure 5 This is a partial schematic diagram of the scraping structure of this utility model.

[0026] In the diagram: 10. Workbench; 11. Electric slide rail; 12. Collection tank; 13. Clamping component; 14. Anti-slip mat; 15. Melting box; 16. Dryer; 17. Control panel; 18. Support frame; 19. Motor; 20. Lead screw; 21. Pushing block; 22. Scraper; 23. Support rod; 24. Temperature sensor; 25. Liquid level sensor; 26. High-pressure pump; 27. Coating thickness gauge; 28. Fan-shaped atomizing nozzle; 29. ​​Aggregating plate; 30. Spring; 31. Slide groove; 32. Rotating groove; 33. Slider. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] A device for metering and leveling rubber paste hot melt adhesive, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, including

[0029] A workbench 10 has a collection trough 12 on its top surface. Electric slide rails 11 and clamping parts 13 are symmetrically installed on the top surface of the workbench 10. Anti-slip pads 14 and control panels 17 are installed on the top surface of the workbench 10. The anti-slip pads 14 are located between the two clamping parts 13. A melting tank 15, a dryer 16 and a support frame 18 are fixedly installed on the top surface of the sliding part of the electric slide rail 11. A coating thickness gauge 27 is installed on the melting tank 15. The control panel 17 is electrically connected to the melting tank 15, the dryer 16 and the coating thickness gauge 27. A fan-shaped atomizing nozzle 28 is installed on the bottom surface of the melting tank 15.

[0030] The leveling structure is movably mounted on the support frame 18. The leveling structure includes a lead screw 20, a top moving block 21, a scraper 22, and a material gathering plate 29. Two material gathering plates 29 are symmetrically arranged, and both material gathering plates 29 are movably mounted on the support frame 18. The scraper 22 is movably mounted between the two material gathering plates 29. The top moving block 21 is movably mounted between the support frame 18 and the lead screw 20. The lead screw 20 is rotatably mounted on the support frame 18.

[0031] Specifically, the material to be coated and bonded is firmly fixed on the workbench 10 by the clamping member 13. The protective pad 14 can buffer between the clamped material and the clamping member 13. The collection tank 12 is equipped with a collection box to collect waste. The top of the melting tank 15 is equipped with a lid. Glue is added into the melting tank 15 through the connection between the melting tank 15 and the lid. The melting tank 15 has an automatic heating capability to melt the glue. The melted glue is sprayed onto the surface of the material through the fan-shaped atomizing nozzle 28. Then, the glue layer on the surface of the material is smoothed by the scraping structure. Then, the glue layer is dried by the dryer 16.

[0032] It is worth noting that the workbench 10, electric slide rail 11, collection trough 12, collection box, clamping part 13 and anti-slip pad 14 used in this device are all disclosed in detail in the prior art of a hot melt adhesive coating and bonding machine (CN222197608U), and will not be described in detail here. When used in this device, they only need to be adapted to this device.

[0033] like Figure 1, Figure 3 and Figure 4 As shown, a temperature sensor 24, a liquid level sensor 25, and a high-pressure pump 26 are installed inside the melt glue tank 15. The temperature sensor 24 and the liquid level sensor 25 are located at one end of the melt glue tank 15, and the high-pressure pump 26 is located at the other end of the melt glue tank 15. The input end of the high-pressure pump 26 is connected to the inside of the melt glue tank 15, and the output end of the high-pressure pump 26 is connected to the fan-shaped atomizing nozzle 28. The control panel 17 is electrically connected to the temperature sensor 24, the liquid level sensor 25, and the high-pressure pump 26. The high-pressure pump 26 is electrically connected to the coating thickness gauge 27, which is positioned directly opposite the fan-shaped atomizing nozzle 28.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the melt box 15 and the dryer 16 are symmetrically arranged with the support frame 18 as the center. The support frame 18 has an arched structure. A motor 19 is fixedly installed at the top of one end of the support frame 18. The output end of the motor 19 is connected to the top of the lead screw 20. The control panel 17 is electrically connected to the motor 19, and the coating thickness gauge 27 is electrically connected to the motor 19.

[0035] The working principle is as follows: the melt glue tank 15 and the dryer 16 are placed symmetrically around the support frame 18 to ensure their balance and stability on the production line. Temperature sensor 24 and level sensor 25 are installed at one end inside the melt glue tank 15 to ensure accurate monitoring of the glue temperature and level. High-pressure pump 26 is installed at the other end inside the melt glue tank 15, with its input connected to the inside of the tank and its output connected to the fan-shaped atomizing nozzle 28 via a pipe. The control panel 17 is electrically connected to the temperature sensor 24, level sensor 25, and high-pressure pump 26 to achieve real-time data transmission and control command sending. The coating thickness gauge 27 is positioned directly opposite the fan-shaped atomizing nozzle 28 to ensure accurate measurement of the coating thickness and to transmit the data. Feedback is sent to the control panel 17. Based on the adhesive temperature fed back by the temperature sensor 24, the control panel 17 automatically adjusts the heating power of the melting tank 15 to ensure that the adhesive is kept within the set temperature range. Based on the adhesive level fed back by the liquid level sensor 25, the control panel 17 controls the amount of adhesive fed into the melting tank 15 to prevent insufficient adhesive or overflow. Based on the coating thickness fed back by the coating thickness gauge 27, the control panel 17 adjusts the output pressure of the high-pressure pump 26 to ensure the uniformity and consistency of the coating layer and controls the rotation speed of the motor 19. This controls the position and height of the lifting block 21 driven by the lead screw 20, thereby controlling the distance between the two material gathering plates 29 by the position of the lifting block 21. The distance between the two material gathering plates 29 is the leveling range for the coating size.

[0036] like Figure 2As shown, square grooves are provided on both inner walls of the support frame 18, and the actuating block 21 is an inverted trapezoidal block, which is slidably disposed between the two square grooves; as Figure 2 and Figure 5 As shown, one end of the actuating block 21 is threadedly engaged with the lead screw 20, and the bottom inclined surface of the actuating block 21 abuts against the material plates 29 on both sides;

[0037] like Figure 2 and Figure 5 As shown, two support rods 23 are symmetrically fixed at the bottom of the support frame 18, and two aggregate plates 29 are slidably disposed at both ends of the support rods 23. A pair of springs 30 are fixed between the two aggregate plates 29 and the support frame 18. The springs 30 are sleeved on the support rods 23, and the support frame 18 is elastically connected to the aggregate plates 29 through the springs 30.

[0038] like Figure 5 As shown, rotating grooves 32 are provided on both sides of the scraper 22, and sliding grooves 31 are provided on both sides of the material gathering plate 29. A slider 33 is slidably arranged in the sliding groove 31, and one end of the slider 33 is hinged in the rotating groove 32.

[0039] The working principle is as follows: During use, when the lifting block 21 moves up and down, the material-gathering plates 29 located on both sides of the lifting block 21 move simultaneously according to the orientation of the inclined surfaces on both sides of the lifting block 21. The springs 30 deform accordingly. Specifically, when the lifting block 21 presses down, the material-gathering plates 29 on both sides move outward simultaneously on the support rod 23, compressing the corresponding springs 30. When the lifting block 21 rises, the material-gathering plates 29 on both sides move inward simultaneously, stretching the corresponding springs 30. At the same time, the scraper 22 tilts in coordination with the distance between the material-gathering plates 29 on both sides. Specifically, when the material-gathering plates 29 on both sides converge, the sliders 33 on both sides of the scraper 22 slide within the corresponding grooves 31 to adapt to the change in the distance between the material-gathering plates 29 on both sides. The hinge of the rotating groove 32 and the sliding of the slider 33 tilt downwards. When the material plates 29 on both sides expand outwards at the same time, the scraper 22 gradually returns to a horizontal state by means of the hinge relationship between the rotating groove 32 and the sliders 33 on both sides. When the electric slide rail 11 drives the sliding parts to move, the control panel 17 controls the output pressure of the high-pressure pump 26 to spray the adhesive from the fan-shaped atomizing nozzle 28. After spraying onto the material surface, the coating thickness gauge 27 detects the thickness of the adhesive coating and transmits the data to the control panel 17. The control panel 17 controls the rotation speed of the motor 19 and drives the top block 21 to rise and fall to a suitable position. The material plates 29 on both sides maintain a suitable range for scraping. The scraper 22 scrapes the coating. Then the dryer 16 dries the coating.

[0040] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for quantitative spraying and leveling of hot melt rubber paste, characterized in that, include A workbench (10) is provided with a collection groove (12) on its top surface. Electric slide rails (11) and clamping parts (13) are symmetrically installed on the top surface of the workbench (10). Anti-slip pads (14) and control panels (17) are installed on the top surface of the workbench (10). The anti-slip pads (14) are located between the two clamping parts (13). A melting box (15), a dryer (16), and a support frame (18) are fixedly installed on the top surface of the sliding part of the electric slide rail (11). A coating thickness gauge (27) is installed on the melting box (15). The control panel (17) is electrically connected to the melting box (15), the dryer (16), and the coating thickness gauge (27). A fan-shaped atomizing nozzle (28) is installed on the bottom surface of the melting box (15). A leveling structure is movably mounted on a support frame (18). The leveling structure includes a lead screw (20), a top moving block (21), a scraper (22), and a material gathering plate (29). Two material gathering plates (29) are symmetrically arranged, and both material gathering plates (29) are movably mounted on the support frame (18). The scraper (22) is movably mounted between the two material gathering plates (29). The top moving block (21) is movably mounted between the support frame (18) and the lead screw (20). The lead screw (20) is rotatably mounted on the support frame (18).

2. The device for quantitative spraying and leveling of rubber paste hot melt adhesive according to claim 1, characterized in that, The inside of the melt glue tank (15) is equipped with a temperature sensor (24), a liquid level sensor (25), and a high-pressure pump (26). The temperature sensor (24) and the liquid level sensor (25) are located at one end of the melt glue tank (15), and the high-pressure pump (26) is located at the other end of the melt glue tank (15). The input end of the high-pressure pump (26) is connected to the inside of the melt glue tank (15), and the output end of the high-pressure pump (26) is connected to the fan-shaped atomizing nozzle (28). The control panel (17) is electrically connected to the temperature sensor (24), the liquid level sensor (25), and the high-pressure pump (26). The high-pressure pump (26) is electrically connected to the coating thickness gauge (27), and the coating thickness gauge (27) is set directly opposite the fan-shaped atomizing nozzle (28).

3. The device for quantitative spraying and leveling of rubber paste hot melt adhesive according to claim 2, characterized in that, The melt box (15) and the dryer (16) are symmetrically arranged around the support frame (18). The support frame (18) has an arched structure. A motor (19) is fixedly installed at the top of one end of the support frame (18). The output end of the motor (19) is connected to the top of the lead screw (20). The control panel (17) is electrically connected to the motor (19). The coating thickness gauge (27) is electrically connected to the motor (19).

4. The device for quantitative spraying and leveling of rubber paste hot melt adhesive according to claim 3, characterized in that, The inner walls on both sides of the support frame (18) are provided with square grooves, and the jacking block (21) is an inverted trapezoidal block. The jacking block (21) is slidably disposed between the two square grooves.

5. The device for quantitative spraying and leveling of hot melt rubber paste according to claim 4, characterized in that, One end of the actuating block (21) is threaded into the lead screw (20), and the bottom inclined surface of the actuating block (21) abuts against the material plates (29) on both sides.

6. The device for quantitative spraying and leveling of rubber paste hot melt adhesive according to claim 5, characterized in that, Two support rods (23) are symmetrically fixed at the bottom of the support frame (18). Two aggregate plates (29) are slidably disposed at both ends of the support rods (23). A pair of springs (30) are fixed between the two aggregate plates (29) and the support frame (18). The springs (30) are sleeved on the support rods (23). The support frame (18) is elastically connected to the aggregate plates (29) through the springs (30).

7. The device for quantitative spraying and leveling of rubber paste hot melt adhesive according to claim 6, characterized in that, The scraper (22) has a rotating groove (32) on both sides, and the material gathering plate (29) on both sides has a sliding groove (31). A slider (33) is slidably arranged in the sliding groove (31), and one end of the slider (33) is hinged in the rotating groove (32).

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