A coating machine for uniform application

Abstract

This utility model relates to the field of coating machine technology, and more particularly to a coating machine for uniform coating. It includes: a machine base, with an unwinding assembly at the bottom of the machine base, and a coating assembly mounted on the machine base. By incorporating the unwinding assembly, a motor drives a bidirectional lead screw to rotate. Combined with the guide rail guiding the drive block, this allows for precise adjustment of the distance between the drive shaft and the driven shaft, improving adaptability to substrate rolls of different specifications. Simultaneously, utilizing the adaptive adjustment mechanism of springs and tensioning blocks, combined with the damping force generated by the oil reservoir, piston rod, and piston, ensures that the tensioning blocks stably adhere to the inner wall of the substrate roll, effectively preventing slackness during unwinding. Furthermore, a second motor, through the transmission of a first sprocket, a transmission chain, and a second sprocket, precisely drives the drive shaft to rotate. The driven shaft is driven by the drive shaft to rotate synchronously, thereby ensuring the substrate is smoothly and continuously unwound from the substrate roll.

Description

Technical Field

[0001] This utility model relates to the field of coating machine technology, and in particular to a coating machine for uniform coating. Background Technology

[0002] A coating machine is a specialized piece of equipment that uniformly coats liquid or paste-like materials onto the surface of a substrate. It is widely used in industries such as packaging, electronics, and new energy.

[0003] However, traditional coating machines are difficult to adapt to substrate rolls of different specifications during use, which greatly limits the scope of application of the equipment. Secondly, during the coating process, wrinkles are easily formed on the surface of the substrate on the coating machine, which makes it difficult to apply the glue evenly to the substrate, resulting in inconsistent coating quality. In addition, traditional coating machines have the problem of excessive glue consumption during operation, with a large amount of glue failing to be effectively applied to the substrate surface, thus wasting glue resources. Utility Model Content

[0004] The purpose of this invention is to provide a coating machine for uniform coating, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: it includes a base, an unwinding assembly is provided at the bottom of the base, and a coating assembly is provided on the base;

[0006] The coating assembly includes a pair of mounting plates symmetrically arranged on the base, a guide roller 2 between the two mounting plates 2, a back roller on one side of the guide roller 2, a motor 4 on the mounting plate 2, the transmission end of the motor 4 being connected to one end of the back roller, a coating roller on one side of the back roller, a motor 5 on the mounting plate 2, the transmission end of the motor 5 being connected to one end of the coating roller, and a scraper between the two mounting plates 2, the scraper being located directly above the coating roller.

[0007] In a preferred embodiment of this utility model, the unwinding assembly includes a mounting box disposed on the bottom surface of the machine base. A fixing sleeve is disposed on one side of the mounting box, and a bidirectional lead screw is inserted into the fixing sleeve. A motor is disposed on the side of the mounting box away from the fixing sleeve. The transmission end of the motor is connected to one end of the bidirectional lead screw. A pair of driving blocks are spirally sleeved on the outer side of the bidirectional lead screw. A pair of guide rails are disposed inside the mounting box, and the two driving blocks are slidably disposed on the guide rails.

[0008] As a preferred embodiment of this utility model, a support base 1 is provided on the right-side drive block, a drive shaft is provided inside the support base 1, a motor 2 is provided on one side of the support base 1, a sprocket 1 is provided at the transmission end of the motor 2, a sprocket 2 is provided at one end of the drive shaft 1, and a transmission chain is provided between the sprocket 1 and the sprocket 2. A support base 2 is provided on the left-side drive block, and a driven shaft is provided inside the support base 2.

[0009] As a preferred embodiment of this utility model, both the drive shaft and the driven shaft are provided with several mounting seats, each mounting seat is provided with a pair of springs, each pair of springs is provided with a tensioning block at the end away from the mounting seat, each mounting seat is provided with an oil reservoir corresponding to the position of the spring, each tensioning block is provided with a piston rod corresponding to the position of the oil reservoir at the bottom, and each piston rod is provided with a piston at the bottom, the piston being slidably disposed inside the oil reservoir.

[0010] As a preferred embodiment of this utility model, a pair of mounting plates are symmetrically arranged on the base on one side of the mounting box, a guide roller is arranged between the two mounting plates, a rotating shaft is arranged on one side of the guide roller, a motor is arranged on the mounting plate, one end of the rotating shaft is connected to the transmission end of the motor, a pair of L-shaped mounting brackets are symmetrically arranged on the rotating shaft, and a tensioning roller is arranged between the two L-shaped mounting brackets.

[0011] As a preferred embodiment of this utility model, a glue storage tank is provided on the base between the two mounting plates, a conveying pump is provided on one side of the glue storage tank, a coating platform is provided on one side of the coating roller, a nozzle is provided on the coating platform, the inlet of the conveying pump is connected to the glue storage tank, the outlet of the conveying pump is connected to the nozzle, and a recycling port is provided on the glue storage tank at the position corresponding to the tail of the coating platform.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] This invention, through the setting of an unwinding assembly, uses a motor to drive a bidirectional lead screw to rotate. Combined with the guide rail guiding the drive block, this allows for precise adjustment of the distance between the drive shaft and the driven shaft, improving adaptability to substrate rolls of different specifications. Simultaneously, utilizing the adaptive adjustment mechanism of the spring and the tensioning block, combined with the damping force generated by the oil reservoir, piston rod, and piston, ensures that the tensioning block stably adheres to the inner wall of the substrate roll, effectively preventing slackness during unwinding and providing a solid guarantee for the stability of the unwinding process. Secondly, a motor, through the transmission of sprocket one, the transmission chain, and sprocket two, precisely drives the drive shaft to rotate. The driven shaft is driven by the drive shaft to rotate synchronously, thereby smoothly and continuously unwinding the substrate from the substrate roll. Furthermore, a motor three drives a rotating shaft to rotate, causing the L-shaped mounting bracket to rotate, thereby adjusting the position of the tension roller. This ensures that the substrate maintains appropriate tension under the action of the tension roller, effectively preventing wrinkles or slackness in the substrate during coating.

[0014] This invention features a coating assembly where motors four and five drive the back roller and coating roller respectively. The two work together to evenly apply adhesive to the substrate. Simultaneously, a scraper removes excess adhesive from the coating roller surface, ensuring high precision and quality in the coating process. Furthermore, a delivery pump transports adhesive from the storage tank to the nozzle, which evenly sprays the adhesive onto the coating platform. As the coating roller rotates, it transfers the adhesive to its own surface. Excess adhesive flows through the tail of the coating platform into the recycling port, returning to the storage tank for reuse and preventing waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the unwinding assembly structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the drive shaft structure in the unwinding assembly of this utility model;

[0018] Figure 4 This is a schematic diagram of the tension roller structure in the unwinding assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the coating component structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the coating roller structure in the coating assembly of this utility model.

[0021] Reference numerals: 1. Machine base; 2. Unwinding assembly; 21. Mounting box; 22. Fixing sleeve; 23. Double-acting lead screw; 24. Motor 1; 25. Drive block; 26. Guide rail; 27. Support base 1; 28. Drive shaft; 29. ​​Support base 2; 210. Driven shaft; 211. Motor 2; 212. Sprocket 1; 213. Sprocket 2; 214. Transmission chain; 215. Mounting base; 216. Spring; 217. Tensioning block; 218. Oil reservoir; 218. Piston rod 219, Piston 1; 220, Mounting Plate 1; 221, Guide Roller 1; 222, Rotating Shaft 1; 223, Motor 3; 224, L-shaped Mounting Frame; 225, Tension Roller; 226, Coating Assembly 3; Mounting Plate 2; 31, Guide Roller 2; 32, Back Roller; 33, Motor 4; 34, Coating Roller; 35, Motor 5; 36, Scraper; 37, Glue Storage Tank; 38, Conveyor Pump; 39, Coating Platform; 310, Recycling Port; 311, Nozzle; 312. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] like Figures 1-6 As shown, the present invention proposes a coating machine for uniform coating, which includes a machine base 1, an unwinding assembly 2 at the bottom of the machine base 1, and a coating assembly 3 on the machine base 1.

[0024] The coating assembly 3 includes a pair of mounting plates 31 symmetrically arranged on the base 1. A guide roller 32 is disposed between the two mounting plates 31, guiding the substrate. A back roller 33 is disposed on one side of the guide roller 32. A motor 34 is disposed on the mounting plates 31, and the drive end of the motor 34 is connected to one end of the back roller 33. The motor 34 provides rotational power to the back roller 33, which drives the substrate forward, providing power for the coating process. A coating roller 35 is disposed on one side of the back roller 33. A motor 36 is installed on the mounting plate 2 31. The transmission end of the motor 36 is connected to one end of the coating roller 35. The motor 36 provides rotational power for the coating roller 35. The coating roller 35 cooperates with the back roller 33 to evenly apply the glue on the coating platform 310 to the substrate. A scraper 37 is provided between the two mounting plates 2 31. The scraper 37 is located directly above the coating roller 35. The scraper 37 is used to scrape off excess glue from the surface of the coating roller 35 to ensure that the glue on the surface of the coating roller 35 is uniform, thereby improving the coating quality.

[0025] The unwinding assembly 2 includes a mounting box 21 disposed on the bottom surface of the base 1. The mounting box 21 provides a mounting base for other components in the unwinding assembly 2. A fixing sleeve 22 is disposed on one side of the mounting box 21, and a bidirectional lead screw 23 is inserted into the fixing sleeve 22. The fixing sleeve 22 provides support for the bidirectional lead screw 23 and ensures the stability of the bidirectional lead screw 23 during rotation. A motor 24 is disposed on the side of the mounting box 21 away from the fixing sleeve 22. The transmission end of the motor 24 is connected to one end of the bidirectional lead screw 23. The motor 24 provides rotational power for the bidirectional lead screw 23 and converts the rotational motion of the bidirectional lead screw 23 into the linear motion of the drive block 25. A pair of drive blocks 25 are spirally sleeved on the outside of the bidirectional lead screw 23. A pair of guide rails 26 are disposed inside the mounting box 21. The two drive blocks 25 are slidably disposed on the guide rails 26. The guide rails 26 provide guidance for the drive blocks 25 and ensure the stability of the drive blocks 25 during movement.

[0026] A support base 27 is provided on the right drive block 25, and a drive shaft 28 is provided inside the support base 27. The support base 27 provides support for the drive shaft 28 to ensure the stability of the drive shaft 28 during rotation. A motor 211 is provided on one side of the support base 27. A sprocket 212 is provided at the transmission end of the motor 211, and a sprocket 213 is provided at one end of the drive shaft 28. A transmission chain 214 is provided between the sprocket 212 and the sprocket 213. The motor 211 provides rotational power to the sprocket 212, and the sprocket 212 transmits power to the sprocket 213 through the transmission chain 214, thereby driving the drive shaft 28 to rotate. A support base 29 is provided on the left drive block 25, and a driven shaft 210 is provided inside the support base 29. The support base 29 provides support for the driven shaft 210, so that the driven shaft 210 can cooperate with the drive shaft 28 and rotate under the drive of the drive shaft 28 to realize the unwinding of the substrate.

[0027] Both the drive shaft 28 and the driven shaft 210 are provided with several mounting seats 215. Each mounting seat 215 is provided with a pair of springs 216. Each pair of springs 216 has a tensioning block 217 at the end away from the mounting seat 215. The springs 216 allow the tensioning blocks 217 to adaptively adjust according to the inner diameter of the substrate roll. Each mounting seat 215 is provided with an oil reservoir 218 corresponding to the position of the springs 216. The oil reservoir 218 stores hydraulic oil. The bottom of each tensioning block 217 corresponds to the oil reservoir. Piston rods 219 are provided at the positions of oil cylinders 218, and pistons 220 are provided at the bottom of each piston rod 219. Pistons 220 are slidably disposed inside oil cylinders 218. The combined use of piston rods 219, pistons 220 and oil cylinders 218 can generate damping force, reduce the rebound speed of springs 216, ensure that the tensioning block 217 is stably attached to the inner wall of the substrate roll, and tighten the substrate roll on the drive shaft 28 and driven shaft 210 to prevent the substrate roll from loosening during unwinding.

[0028] A pair of mounting plates 221 are symmetrically arranged on the base 1 on one side of the mounting box 21. A guide roller 222 is arranged between the two mounting plates 221 to guide the substrate. A rotating shaft 223 is arranged on one side of the guide roller 222. A motor 224 is arranged on the mounting plate 221. One end of the rotating shaft 223 is connected to the transmission end of the motor 224. A pair of L-shaped mounting brackets 225 are symmetrically arranged on the rotating shaft 223. A tension roller 226 is arranged between the two L-shaped mounting brackets 225. The motor 224 provides rotational power for the rotating shaft 223. When the rotating shaft 223 rotates, it drives the L-shaped mounting brackets 225 to rotate, thereby adjusting the position of the tension roller 226 and making the tension roller 226 tension the substrate. This ensures that the substrate maintains appropriate tension during the coating process and avoids wrinkles or loosening.

[0029] A glue storage tank 38 is installed on the base 1 between the two mounting plates 31. The glue storage tank 38 is used to store the glue required for coating. A delivery pump 39 is installed on one side of the glue storage tank 38. The delivery pump 39 delivers the glue in the glue storage tank 38 to the nozzle 312. A coating platform 310 is installed on one side of the coating roller 35. The glue flows on the coating platform 310. When the coating roller 35 rotates, it transfers the glue to its own surface. The nozzle 312 is installed on the coating platform 310. The feed inlet of the delivery pump 39 is connected to the glue storage tank 38, and the discharge port of the delivery pump 39 is connected to the nozzle 312. Under the action of the delivery pump 39, the nozzle 312 sprays the glue in the glue storage tank 38 evenly onto the coating platform 310 to provide glue for the coating roller 35. A recycling port 311 is provided on the glue storage tank 38 at the position corresponding to the tail of the coating platform 310. The recycling port 311 is used to recycle excess glue on the coating platform 310 to avoid glue waste.

[0030] In use, the operator first aligns both ends of the substrate roll with the drive shaft 28 and the driven shaft 210, then starts the motor 24. The motor 24 drives the bidirectional lead screw 23 to rotate, converting the rotational motion of the bidirectional lead screw 23 into the linear motion of the drive block 25. This causes the drive blocks 25 on both sides to move closer or further apart along the guide rail 26, thereby adjusting the distance between the drive shaft 28 and the driven shaft 210. The spring 216 allows the tensioning block 217 to adaptively adjust according to the inner diameter of the substrate. When the tensioning block 217 compresses the spring 216, it pushes the piston rod 219 and piston 220 to move within the oil reservoir 218. The piston 220 divides the space inside the oil reservoir 218 into two chambers, and the hydraulic oil in the oil reservoir 218 flows through the piston 220. Different small holes repeatedly flow from one cavity to another. The friction between the hole wall and the hydraulic oil and the internal friction between the hydraulic oil molecules will hinder the flow of hydraulic oil, thereby generating a damping force, slowing down the rebound speed of spring 216, ensuring that the tensioning block 217 is stably attached to the inner wall of the substrate roll, so that the substrate roll can be smoothly installed on the drive shaft 28 and the driven shaft 210. The substrate roll passes through the guide roller 1 222, tension roller 226 and guide roller 2 32 in sequence, and is then sandwiched in the middle by the back roller 33 and the coating roller 35. The operator can start the motor 3 224 to drive the rotating shaft 1 223 to rotate, which will drive the L-shaped mounting bracket 225 and the tension roller 226 to rotate, and adjust the position of the tension roller 226 so that the substrate roll maintains appropriate tension under the action of the tension roller 226.

[0031] Then the coating operation begins. The operator can start the delivery pump 39 to deliver the glue from the glue storage tank 38 to the nozzle 312. The glue is evenly sprayed onto the coating platform 310 through the nozzle 312. The motor 211 drives the sprocket 212 to rotate, and then transmits power to the sprocket 213 through the transmission chain 214, which in turn drives the drive shaft 28 to rotate, causing the substrate to be released from the substrate roll. After being guided and tensioned by the guide roller 222 and the tension roller 226, the substrate passes through the square hole on the machine base 1 and enters the guide roller 32. The substrate is sandwiched between the back roller 33 and the coating roller 35. Then, the motors 34 and 36 are started to drive the back roller 33 and the coating roller 35 to rotate respectively. The back roller 33 moves the substrate, and the coating roller 35 evenly applies the glue on the coating platform 310 to the substrate. The scraper 37 is used to scrape off the excess glue on the surface of the coating roller 35 to ensure the quality of the coating operation. The excess glue on the coating platform 310 can be returned to the glue storage box 38 through the recycling port 311 to realize the recycling of glue. The coated substrate can enter the downstream drying equipment for further processing.

[0032] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A coating machine for uniform application, comprising: The machine base (1) is characterized in that: an unwinding assembly (2) is provided at the bottom of the machine base (1), and a coating assembly (3) is provided on the machine base (1); The coating assembly (3) includes a pair of mounting plates (31) symmetrically arranged on the base (1). A guide roller (32) is arranged between the two mounting plates (31). A back roller (33) is arranged on one side of the guide roller (32). A motor (34) is arranged on the mounting plate (31). The transmission end of the motor (34) is connected to one end of the back roller (33). A coating roller (35) is arranged on one side of the back roller (33). A motor (36) is arranged on the mounting plate (31). The transmission end of the motor (36) is connected to one end of the coating roller (35). A scraper (37) is arranged between the two mounting plates (31). The scraper (37) is located directly above the coating roller (35).

2. The coating machine for uniform coating according to claim 1, characterized in that: The unwinding assembly (2) includes a mounting box (21) disposed on the bottom surface of the base (1). A fixing sleeve (22) is provided on one side of the mounting box (21). A bidirectional lead screw (23) is inserted into the fixing sleeve (22). A motor (24) is provided on the side of the mounting box (21) away from the fixing sleeve (22). The transmission end of the motor (24) is connected to one end of the bidirectional lead screw (23). A pair of drive blocks (25) are spirally sleeved on the outside of the bidirectional lead screw (23). A pair of guide rails (26) are provided inside the mounting box (21). The two drive blocks (25) are slidably disposed on the guide rails (26).

3. The coating machine for uniform coating according to claim 2, characterized in that: The drive block (25) on the right side is provided with a support base (27), and the drive shaft (28) is provided inside the support base (27). The motor (211) is provided on one side of the support base (27). The drive end of the motor (211) is provided with a sprocket (212). The drive shaft (28) is provided with a sprocket (213). A transmission chain (214) is provided between the sprocket (212) and the sprocket (213). The drive block (25) on the left side is provided with a support base (29), and the driven shaft (210) is provided inside the support base (29).

4. The coating machine for uniform coating according to claim 3, characterized in that: Both the drive shaft (28) and the driven shaft (210) are provided with several mounting seats (215). Each mounting seat (215) is provided with a pair of springs (216). Each pair of springs (216) is provided with a support block (217) at the end away from the mounting seat (215). Each mounting seat (215) is provided with an oil reservoir (218) at the position corresponding to the springs (216). Each support block (217) is provided with a piston rod (219) at the position corresponding to the oil reservoir (218). Each piston rod (219) is provided with a piston (220) at the bottom. The piston (220) is slidably disposed in the oil reservoir (218).

5. A coating machine for uniform coating according to claim 4, characterized in that: A pair of mounting plates (221) are symmetrically arranged on the base (1) on one side of the mounting box (21). A guide roller (222) is arranged between the two mounting plates (221). A rotating shaft (223) is arranged on one side of the guide roller (222). A motor (224) is arranged on the mounting plate (221). One end of the rotating shaft (223) is connected to the transmission end of the motor (224). A pair of L-shaped mounting brackets (225) are symmetrically arranged on the rotating shaft (223). A tension roller (226) is arranged between the two L-shaped mounting brackets (225).

6. The coating machine for uniform coating according to claim 5, characterized in that: A glue storage tank (38) is provided on the base (1) between the two mounting plates (31). A conveying pump (39) is provided on one side of the glue storage tank (38). A glue application platform (310) is provided on one side of the coating roller (35). A nozzle (312) is provided on the glue application platform (310). The inlet of the conveying pump (39) is connected to the glue storage tank (38), and the outlet of the conveying pump (39) is connected to the nozzle (312). A recycling port (311) is provided on the glue storage tank (38) at the position corresponding to the tail of the glue application platform (310).

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