Multi-functional coater

Abstract

The utility model discloses a multifunctional coating machine possesses two base frames, the drive system and control system of being arranged in the base frame, modular coating unit, wherein, the modular coating unit includes the hot melt adhesive coating module integrated on the base frame, solvent / water -based paste coating module, the hot melt adhesive coating module, solvent / water -based paste coating module, share the drive system and control system and possess temperature controllable with the coating head of gate hopper, when adopts the hot melt adhesive coating module and carries out coating, the temperature controllable range of with the gate hopper is 60 DEG C - 120 DEG C, when adopts the solvent / water -based paste coating module and carries out coating, the temperature of with the gate hopper is normal temperature. Through modular design realizes multi -process compatibility, solved the traditional equipment process interference, cost is high, the problem of low precision, has coating precision height, cleaning fast, cost is low and so on advantage, is applicable to laboratory and small -and -medium -scale production scene.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically to a miniaturized, high-precision, multi-functional coating machine that is compatible with various coating processes such as hydrogel patches, hot melt adhesives, solvents, and oral disintegrating membranes (ODF). Background Technology

[0002] Existing multi-functional coating equipment has the following drawbacks:

[0003] 1. Process compatibility and interference issues: Interference can easily occur between different coating processes. For example, heating hot melt adhesive can accelerate solvent evaporation, leading to solvent residue contamination of other modules. When changing coating types, incomplete cleaning may cause cross-contamination between volatile solvents (such as toluene and hexane) and water-based pastes.

[0004] 2. Equipment cost and functional limitations: Traditional multi-functional coating devices are bulky and expensive, and the structure of production equipment differs greatly from that of laboratory equipment, making it difficult to reproduce the production process in the laboratory.

[0005] 3. Insufficient precision and stability: Traditional laboratory coaters have low film thickness control precision, and it is particularly difficult to maintain the molten state of hot melt adhesives and meet the long-term drying requirements of ODF.

[0006] Therefore, there is an urgent need for a miniaturized, low-cost device that is compatible with multiple coating processes to solve the interference problem between different processes, improve cleaning efficiency and coating accuracy, and meet the process reproduction requirements from the laboratory to the production end. Utility Model Content

[0007] The present invention aims to provide a modularly designed multifunctional coating machine that enables compatibility and rapid switching of various coating processes, improves coating accuracy and production efficiency, and reduces equipment costs and space occupation.

[0008] The first type of multifunctional coating machine provided by this utility model comprises: a base frame, a drive system and a control system disposed within the base frame, and a modular coating unit. The modular coating unit includes a hot melt adhesive coating module and a solvent / water-based paste coating module, both integrated on the base frame and sharing the drive system and control system. The hot melt adhesive coating module and the solvent / water-based paste coating module share a coating head with a temperature-controllable gate hopper. When coating is performed using the hot melt adhesive coating module, the temperature controllable range of the gate hopper is 60℃-120℃; when coating is performed using the solvent / water-based paste coating module, the temperature of the gate hopper is at room temperature.

[0009] The second type of multifunctional coating machine provided by this utility model is based on the first type of multifunctional coating machine. The solvent / water-based paste coating module includes a solvent coating module and an ODF coating module.

[0010] The third type of multifunctional coating machine provided by this utility model is based on the first or second type of multifunctional coating machine. The modular coating unit further includes a hydrogel coating module with a double-roller clamping coating structure. The double-roller clamping coating structure includes a first clamping roller and a second clamping roller. The first clamping roller and the second clamping roller are independently driven by a servo motor in the drive system, and the roller gap between the first clamping roller and the second clamping roller can be adjusted within the range of 0.1-2mm.

[0011] The fourth type of multi-functional coating machine provided by this utility model is based on the second type of multi-functional coating machine, wherein the hot melt adhesive coating module and the solvent coating module also include a shared cooling component.

[0012] The fifth type of multi-functional coating machine provided by this utility model is based on the second type of multi-functional coating machine. The solvent coating module and the ODF coating module also include a shared dry coal furnace, which adopts a two-stage heating structure.

[0013] The sixth multi-functional coating machine provided by this utility model is based on the fifth multi-functional coating machine. When the solvent coating module is used for solvent coating, the front temperature of the dry coal furnace is controlled at 70℃ and the rear temperature is controlled at 80℃. The seventh multi-functional coating machine provided by this utility model is based on the fifth multi-functional coating machine. When the ODF coating module is used for ODF coating, the front temperature of the dry coal furnace is controlled at 80℃ and the rear temperature is controlled at 100℃, and the drying speed is 1 meter / minute.

[0014] The eighth multi-functional coating machine provided by this utility model is based on the seventh multi-functional coating machine. The ODF coating module further includes a spot cooler, and the cooling temperature of the spot cooler is 10℃-20℃.

[0015] The ninth multi-functional coating machine provided by this utility model is based on the third multi-functional coating machine, and further includes a first unwinding shaft, a second unwinding shaft, and a rewinding shaft. The first unwinding shaft, the second unwinding shaft, and the rewinding shaft are all connected to the common drive system and control system. The first unwinding shaft is used for unwinding the padding material used in each coating process. The second unwinding shaft is used for unwinding the cover material used in the hydrogel coating process, the hot melt adhesive coating process, and the solvent coating process. The rewinding shaft is used for rewinding the finished products of the hot melt adhesive coating process, the solvent coating process, and the ODF coating process.

[0016] The tenth multi-functional coating machine provided by this utility model is based on the third multi-functional coating machine. When the modular coating unit switches coating processes, it is cleaned by scraping with a magnetic scraper, wiping with alcohol, and finally blowing with dry air.

[0017] The multi-functional coating machine of this invention achieves multi-process compatibility through modular design, solving the problems of process interference, high cost and low precision of traditional equipment. It has the advantages of high coating precision, fast cleaning and low cost, and is suitable for laboratory and small and medium-sized production scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the hydrogel coating module of the multifunctional coating machine 10 of this embodiment.

[0019] Figure 2 This is a schematic diagram showing the hot melt adhesive coating module of the multi-functional coating machine 10 of this embodiment.

[0020] Figure 3 This is a schematic diagram showing the solvent coating module of the multi-functional coating machine 10 of this embodiment.

[0021] Figure 4 This is a schematic diagram showing the ODF coating module of the multi-functional coating machine 10 of this embodiment. Detailed Implementation

[0022] The following description, based on the accompanying drawings, describes the multi-functional coating machine according to an embodiment of the present invention.

[0023] like Figures 1 to 4 As shown, the multifunctional coating machine 10 of this embodiment includes a modular coating unit 12 comprising a shared drive system (not shown), a base frame 11, and a control system (not shown). The shared drive system and control system are both housed within the base frame 11. The modular coating unit 12 includes four coating modules: a hydrogel coating module, a hot melt adhesive coating module, a solvent coating module serving as a solvent / water-based ointment coating module, and an intraoral disintegrating membrane (ODF) coating module.

[0024] The following sections will explain the composition and process flow of each coating module.

[0025] 1. Hydrogel Coating Module

[0026] The hydrogel coating module of this embodiment, such as Figure 1As shown, a hydrogel coating head 13 is integrated on the common base frame 11. The hydrogel coating head 13 adopts a dual-roller clamping coating structure, that is, it includes a first clamping roller 13a and a second clamping roller 13b. The first clamping roller 13a and the second clamping roller 13b are independently driven by a servo motor (not shown) constituting the drive system, and the roller gap can be adjusted within a specified range (e.g., 0.1-2 mm).

[0027] In addition, the hydrogel coating module of this embodiment includes a first unwinding shaft 14 and a second unwinding shaft 15. The first unwinding shaft 14 is used to place the PP pad roll 16, and the second unwinding shaft 15 is used to place the nonwoven fabric roll 17.

[0028] The process flow for hydrogel coating using the hydrogel coating module of this embodiment is as follows: Figure 1 As shown, firstly, the PP pad K, which serves as the padding material, in the PP pad roll 16 is drawn out from the first unwinding shaft 14, and after passing through each winding tension roller 14a and 14b, it is wound onto the roller of the first clamping roller 13a; at the same time, the nonwoven fabric W, which serves as the cover material, in the nonwoven fabric roll 17 is drawn out from the second unwinding shaft 15, and after passing through each winding tension roller 15a and 15b, it is wound onto the roller of the second clamping roller 13b.

[0029] Then, the multi-functional coating machine 10 is run idle to allow the two layers of material (i.e., PP pad K and non-woven fabric W) to pass through the multi-functional coating machine 10 to its rear. Figure 1 The nonwoven fabric W is coated by injecting hydrogel paste G1 between the first clamping roller 13a and the second clamping roller 13b through the hydrogel coating head 13 (part L). The first clamping roller 13a and the second clamping roller 13b are driven by servo motors, and the stretching deformation generated when the nonwoven fabric W is drawn out is compensated by adjusting the speed difference between the rollers. In addition, there is no feeding device during the coating process, and the finished material consisting of hydrogel paste G1 coated between the PP pad K and the nonwoven fabric W needs to be manually pulled at part L. In addition, the coating thickness is controlled by adjusting the gap between the first clamping roller 13a and the second clamping roller 13b by the handle 13c provided on the hydrogel coating head 13.

[0030] 2. Hot melt adhesive coating module

[0031] The hot melt adhesive coating module of this embodiment, such as Figure 2 As shown, it has a hot melt adhesive coating head 19, a cooling assembly 20, a first unwinding shaft 14 and a second unwinding shaft 15 shared with the hydrogel coating module, a take-up shaft 21, and a pressure roller 22 integrated on the common base frame 11.

[0032] The hot melt adhesive coating head 19 includes a gated hopper 19a, a cooling roller 19b, and temporary bonding rollers 19c and 19d. The gated hopper 19a has a built-in heater (including a side plate, a scraper, a pressure plate, etc.) and the temperature controllable range of the heater is set to 60℃-120℃.

[0033] The cooling assembly 20 includes a first air-cooling roller 20a and a second air-cooling roller 20b made of aluminum.

[0034] The take-up shaft 21 is driven by a servo motor in a shared drive system.

[0035] The process flow for hot melt adhesive coating using the hot melt adhesive coating module of this embodiment is as follows:

[0036] like Figure 2 As shown, the PET pad M, which serves as the padding material, is first drawn out from the first unwinding shaft 14 from the PET pad roll 23 placed on the first unwinding shaft 14. After passing through the winding tension rollers 14a and 14b, it is wound onto the roller of the first clamping roller 13a of the hydrogel coating module, and then drawn out and wound onto the cooling roller 19b. At the same time, the knitted fabric T, which serves as the cover material, is drawn out from the second unwinding shaft 15. After passing through the winding tension rollers 15a and 15b, it is overlapped with the PET pad M at the temporary bonding rollers 19c and 19d. After passing through the pressure roller 22, the adjusting rollers 25, the first air cooling roller 20a and the second air cooling roller 20b, it is wound onto the take-up roller 26 on the take-up shaft 21 to complete the no-load test.

[0037] After debugging, the hot melt adhesive paste G2, which is molten through the heating mixer (not shown), is poured into the gated hopper 19a for coating using a spoon or other tools.

[0038] Immediately after coating, the knitted fabric T is lightly pressed with temporary bonding rollers 19c and 19d. The surfaces of these temporary bonding rollers 19c and 19d are treated with anti-slip material. The tension of the knitted fabric T during its pull-out can be compensated by increasing the rotation speed to ensure bonding.

[0039] After bonding, the materials are pressed by pressure roller 22 to make the knitted fabric T and hot melt adhesive paste G2 adhere tightly. Then, after being air-cooled by the first air-cooling roller 20a and the second air-cooling roller 20b, the finished product consisting of hot melt adhesive paste G2 coated between the PET pad M and the knitted fabric T is wound up by the winding roller 26 set on the winding shaft 21.

[0040] Furthermore, the cooling roller 19b, which serves as a support roller in the coating section of the hot melt adhesive coating head 19, can be circulated with cold or warm water for temperature regulation. For the first air-cooling roller 20a and the second air-cooling roller 20b, forced cooling is not required during coating tests (non-continuous operation); natural cooling is sufficient. However, for continuous use, forced air cooling is necessary by installing fans or similar devices. Additionally, a tension controller (not shown) can be equipped to control tension fluctuations during the winding process of the take-up shaft 21.

[0041] 3. Solvent Coating Module

[0042] The solvent coating module of this embodiment, such as Figure 3 As shown, it has a solvent coating head 19 shared with the hot melt adhesive coating module, a dry coal furnace 27, a first unwinding shaft 14 and a second unwinding shaft 15 shared with the hydrogel coating module, a take-up shaft 21 shared with the hot melt adhesive coating module, and a pressure roller 22 integrated on the common base frame 11.

[0043] The hopper 19a with gate in the solvent coating head 19 is in a normal temperature mode.

[0044] The dry coal furnace 27 uses far-infrared heating. It is divided into two-stage far-infrared heating (the temperature of the front section of the dry coal furnace, which is close to the solvent coating head 19, is controlled at 70°C, while the temperature of the rear section of the dry coal furnace is controlled at 80°C).

[0045] The process flow for solvent coating using the solvent coating module of this embodiment is as follows:

[0046] like Figure 3 As shown, the feeding path of the PET pad N, which serves as the padding material, is the same as that of the hot melt adhesive coating process. That is, the PET pad N in the PET pad roll 28 placed on the first unwinding shaft 14 is first drawn out from the first unwinding shaft 14, passed through each winding tension roller 14a, 14b, and then wound onto the roller of the first clamping roller 13a of the hydrogel coating module. After that, it is drawn out and wound onto the support roller 19b shared with the cooling roller in the hot melt adhesive coating module.

[0047] Then, the solvent paste G3 is poured into the gated hopper 19a above the support roller 19b, the coating thickness is set, and the coating is applied. Then, it is heated and dried in the drying oven 27, and the generated gas is discharged to the outside through the exhaust pipe (not shown).

[0048] After drying, the product material and the supporting film Z, which serves as the cover material, are drawn from the second unwinding shaft 15 and passed through the winding tension rollers 15c and 15d. They are then bonded together by the pressure roller 22. After bonding, the finished product is air-cooled by the first air-cooling roller 20a and the second air-cooling roller 20b through the adjusting rollers 25. The finished product, which is composed of solvent paste G3 coated between the PET pad N and the supporting film Z, is then wound up by the take-up roller 29 set on the take-up shaft 21.

[0049] 4. ODF Coating Module

[0050] The ODF coating module in this embodiment, such as Figure 4 As shown, it has an ODF coating head 19 shared with the hot melt adhesive coating module or the solvent coating module, a dry coal furnace 27 shared with the solvent coating module, a first unwinding shaft 14 shared with the hydrogel coating module or the solvent coating module, and a rewinding shaft 21 shared with the hot melt adhesive coating module or the solvent coating module, all integrated on the common base frame 11.

[0051] The gated hopper 19a in the ODF coating head 19 also adopts a normal temperature mode.

[0052] In addition, the dry coal furnace 27 also employs a two-stage far-infrared heating system (the temperature of the front section of the dry coal furnace near the solvent coating head 19 is controlled at 80°C, while the temperature of the rear section is controlled at 100°C), and its drying speed is set to 1 meter / minute. Furthermore, a point cooler (not shown) with a cooling temperature of 10°C-20°C (preferably around 15°C) is used to forcibly cool the product from coating heating to winding.

[0053] The process flow for ODF coating using the ODF coating module of this embodiment is as follows:

[0054] like Figure 4 As shown, the feeding path of the PET pad Y, which serves as the padding material, is the same as that of the hot melt adhesive coating or ODF coating process. That is, the PET pad Y in the PET pad roll 30 placed on the first unwinding shaft 14 is first drawn out from the first unwinding shaft 14, passes through each winding tension roller 14a, 14b, and is then wound onto the roller of the first clamping roller 13a shared with the hydrogel coating module. After that, it is drawn out and shared with the cooling roller in the hot melt adhesive coating module by the support roller 19b.

[0055] Then, edible water-based (ODF) paste G4 is poured into the gated hopper 19a above the support roller 19b, and the coating thickness is set before coating. The product is then heated and dried in the drying oven 27, with the generated gases discharged outdoors through an exhaust pipe (not shown). After drying, the product material is forcibly cooled to 15°C by the adjusting rollers 25 and then by the spot cooler. Finally, the finished product, consisting of ODF paste G4 coated on the PET pad Y, is wound up using the take-up roller 31 mounted on the take-up shaft 21. During winding, contact between the adjusting rollers and the coated surface is avoided.

[0056] In addition, when switching processes, each module of the new multi-functional coating machine 10 is cleaned using a combination of magnetic scraper, alcohol wiping, and dry air blowing.

[0057] The multi-functional coating machine 10 of this invention has the following advantages.

[0058] 1. The modular design allows the multi-functional coating machine 10 to have a compact layout and implement multiple coating processes. Specifically, each process module (hydrogel coating, hot melt adhesive coating, solvent coating, and ODF coating) shares a drive and control system. Furthermore, the hot melt adhesive coating module, solvent coating module, and ODF coating module share a coating head 19 with a gate hopper, and the hot melt adhesive coating module and solvent coating module share a cooling assembly 20. In other words, the modular design achieves physical isolation and rapid switching between the four coating processes, thus solving the problem of interference between processes.

[0059] 2. By winding materials and finished products in separate areas, interference between different coating processes can be eliminated. That is, by winding materials and finished products in separate areas (with a first unwinding shaft 14, a second unwinding shaft 15, and a take-up shaft 21), cross-contamination of materials from different processes can be avoided.

[0060] 3. By using a servo motor to drive the two rollers in the hydrogel coating head 13 with high precision, and by precisely controlling the film thickness adjustment of hot melt adhesive coating and solvent coating, and by using a two-stage dry coal furnace 27 to control the temperature of product drying during solvent coating and ODF coating, a high solvent evaporation rate can be ensured and the reproducibility of different processes can be achieved.

[0061] 4. Each module is cleaned using a process of "magnetic scraper + alcohol wiping + dry air blowing", which can shorten the cleaning time per cycle and thus improve cleaning efficiency.

[0062] Therefore, the multi-functional coating machine 10 of this embodiment can achieve compatibility and rapid switching of multiple coating processes, improve coating accuracy and production efficiency, and significantly reduce equipment size and cost, making it suitable for laboratory and small-to-medium-scale production scenarios.

[0063] The implementation of the multifunctional coating machine 10 of this utility model can also be modified.

[0064] The multifunctional coating machine 10 of this utility model has a modular coating unit 12 that can contain only any two of the four coating modules.

[0065] The multi-functional coating machine 10 of this utility model can use a heating furnace other than far-infrared heating for its dry coal furnace. Alternatively, it can use a single-stage or multi-stage heating furnace with three or more stages.

[0066] The multi-functional coating machine 10 of this invention can use only one air-cooled roller as its cooling component.

Claims

1. A multi-functional coating machine, comprising: a base frame, a drive system and a control system disposed within the base frame, and a modular coating unit, characterized in that, The modular coating unit includes a hot melt adhesive coating module and a solvent / water-based paste coating module, and both the hot melt adhesive coating module and the solvent / water-based paste coating module are integrated on the base frame and share the drive system and control system. The hot melt adhesive coating module and the solvent / water-based paste coating module share a coating head with a temperature-controlled gate hopper.

2. The multi-functional coating machine as described in claim 1, characterized in that, The solvent / water-based paste coating module includes a solvent coating module and an ODF coating module.

3. The multi-functional coating machine as described in claim 1 or 2, characterized in that, The modular coating unit also includes a hydrogel coating module with a dual-roller clamping coating structure. The dual-roll clamping coating structure includes a first clamping roller and a second clamping roller. The first and second clamping rollers are driven independently by servo motors in the drive system, and the gap between the first and second clamping rollers can be adjusted within the range of 0.1-2mm.

4. The multi-functional coating machine as described in claim 2, characterized in that, The hot melt adhesive coating module and the solvent coating module also include a shared cooling component.

5. The multi-functional coating machine as described in claim 2, characterized in that, The solvent coating module and the ODF coating module also include a shared drying oven, which adopts a two-stage heating structure.

6. The multi-functional coating machine as described in claim 5, characterized in that, The ODF coating module also includes a spot cooler, the cooling temperature of which is 10℃-20℃.

7. The multi-functional coating machine as described in claim 3, characterized in that, It also includes a first unwinding shaft, a second unwinding shaft, and a rewinding shaft. The first unwinding shaft, the second unwinding shaft, and the rewinding shaft are all connected to the common drive system and control system. The first unwinding shaft is used for unwinding the padding material used in each coating process. The second unwinding shaft is used for unwinding the cover material used in the hydrogel coating process, the hot melt adhesive coating process, and the solvent coating process. The rewinding shaft is used for rewinding the finished products of the hot melt adhesive coating process, the solvent coating process, and the ODF coating process.

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