Organic silicon leather coating machine

Abstract

The invention discloses an organic silicon leather coating machine which is sequentially provided with an unwinding unit, a first coating film drying unit, a second coating film drying unit, a third coating film drying unit and a winding unit in the processing feeding direction. Each of the first coating film drying unit, the second coating film drying unit and the third coating film drying unit comprises a scraper coating film machine, a coating film drying oven and traction cooling equipment; the third film coating and drying unit further comprises a double-roller film coating machine; the double-roller film coating machine is arranged at the rear section position of the scraper film coating machine of the third film coating and drying unit; and the double-roller film coating machine can be connected with the scraper film coating machine of the third film coating and drying unit or directly connected with the scraper film coating machine at the front section. The equipment structure can adapt to multiple scenes, waste is reduced through segmented tension and deviation correction control, and the yield is increased. Various base materials and silica gel are compatible, the performance of the oven is optimized, and the utilization rate of release paper is increased; and high-quality organic silicon leather is efficiently produced, and the market high-end requirement is met.

Description

Technical Field

[0001] This invention belongs to the field of leather processing technology and relates to an organosilicon leather coating machine. Background Technology

[0002] Silicone leather, with its excellent properties such as environmental friendliness, wear resistance, and aging resistance, is increasingly widely used in high-end furniture, automotive interiors, and electronic devices, and the market's requirements for its quality are constantly increasing. However, current silicone leather production equipment still has many shortcomings and is difficult to adapt to the industry's development needs.

[0003] On the one hand, the equipment structure is relatively simple, mostly fixed model design, which cannot flexibly match different workshop space layouts. In particular, it is difficult to meet the stringent requirements of high-end cleanrooms for the cleanliness and temperature and humidity stability of the production environment. Environmental factors can easily have an adverse effect on coating quality.

[0004] On the other hand, the core control precision of existing equipment is insufficient, and the tension and correction adopt a rough line control mode, which cannot adapt to the differentiated needs of each production stage. This leads to substrate conveying deviation, serious material waste, and difficulty in improving the yield rate. At the same time, the coating system has poor compatibility with silicone of different viscosities and various substrates, and the coating precision and stability are insufficient, making it easy to have coating defects and making it difficult to ensure the quality consistency of mass production. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An organosilicon leather coating machine is provided with the following components arranged sequentially in the feeding direction: an unwinding unit, a first coating drying unit, a second coating drying unit, a third coating drying unit, and a rewinding unit;

[0007] The first coating drying unit, the second coating drying unit, and the third coating drying unit each include: a doctor blade coating machine, a coating oven, and a traction cooling device;

[0008] The third coating drying unit also includes a two-roller coating machine, which is located at the rear end of the blade coating machine in the third coating drying unit; the two-roller coating machine can be connected to the blade coating machine in the third coating drying unit or directly connected to the blade coating machine in front of it.

[0009] As a further aspect of the present invention, the unwinding unit adopts a dual-station exchange shaft unwinding structure.

[0010] As a further aspect of the present invention, the doctor blade coating machine adopts a rocker arm comma-shaped doctor blade structure.

[0011] As a further aspect of the present invention, a high-precision dual-power steel roller structure is adopted in the double-roller coating machine.

[0012] As a further aspect of the present invention: the coating oven is designed for the production needs of silicone leather; the coating oven adopts a sandwich-type 100mm insulation layer, and the insulation layer is filled with aluminum silicate aerogel.

[0013] The coating oven is designed with fluid analysis in mind, featuring carefully designed air ducts and nozzles, and equipped with power guide rollers for guiding the product material.

[0014] As a further aspect of the present invention, the winding unit is a composite winding structure integrating a center winding module and a surface winding module.

[0015] As a further aspect of the present invention, a traction storage rack is provided between the unwinding unit and the first coating drying unit, and the traction storage rack is provided with a front and rear pressure roller cutting tension traction mechanism.

[0016] As a further aspect of the present invention, an EPC correction mechanism is provided at the outlet position of the coating oven of each coating drying unit.

[0017] As a further aspect of the present invention, a stripping and winding unit is also provided at the rear of the third coating drying unit.

[0018] As a further aspect of the present invention: a water-wetting mechanism is provided between the third coating drying unit and the stripping and winding unit.

[0019] The beneficial effects of this invention are:

[0020] 1. Flexible structure adaptable to diverse scenarios, balancing space and cleanliness requirements: The machine supports both vertical and horizontal models. The vertical machine adopts a folding feeding design, which greatly saves workshop space. Moreover, the coating area of ​​the vertical machine can achieve constant temperature and humidity control, effectively offsetting the impact of seasonal temperature and humidity differences in different regions on coating quality. The oven section can be isolated to optimize the operating environment, and the winding end can avoid mosquito contamination. It is precisely adapted to the stringent production requirements of high-end cleanrooms and meets the diverse needs of customers.

[0021] 2. Precise segmented temperature and deviation control, reducing costs, increasing efficiency and improving quality: The whole machine adopts a segmented tension and segmented deviation correction control system, which can independently adjust the tension of the unwinding section, drying section and rewinding section according to the different tension requirements, and adapt to the production of products of different specifications; the segmented deviation correction can calibrate the substrate conveying position in real time, significantly reduce material waste, improve product yield, and ensure the stability of mass production.

[0022] 3. Innovative coating head design for high-precision and high-quality coating: Utilizing an innovative coating head specifically designed for silicone and leather (precision comma-shaped doctor blade coating head), it is adaptable to silicone solutions of varying viscosities, achieving a coating thickness control accuracy of ±2μm, more than 50% higher than traditional equipment. The absence of blade tipping during production ensures thickness error is controlled within micrometers, guaranteeing an extremely uniform silicone coating adheres to the base fabric. This eliminates defects such as dripping, streaks, and color differences, guaranteeing consistent high-quality products.

[0023] 4. Excellent compatibility and stability, broadening the scope of application: The equipment is compatible with a variety of substrates such as TPU, PC, PET, release paper, non-woven fabric, and microfiber cloth, and can efficiently process silicone water of different viscosities, solving the industry pain points of poor material adaptability and top-end blade of traditional equipment; it can flexibly match the formula and process requirements of different customers, operate smoothly and control tension precisely, and significantly reduce the scrap rate and production cost of customers.

[0024] 5. Optimize overall machine and oven performance to enhance continuous production capacity: By optimizing the oven structure (such as high-efficiency insulation and uniform air duct design), the stability of continuous production is ensured. At the same time, the online silicone leather surface treatment function is integrated to enhance the added value of the product. With the optimization design of the bottom paper wetting mechanism, the recycling rate of release paper is significantly improved, the oven pollution is reduced, and the product quality is further guaranteed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the module structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the coating drying unit in this invention.

[0027] Figure 3 This is a schematic diagram of the structure of the third coating drying unit in this invention.

[0028] Figure 4 This is a schematic diagram of the winding unit in this invention. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the embodiments of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] This invention provides reference to [the relevant document]. Figures 1-4 In this embodiment of the invention, an organosilicon leather coating machine is provided with the following components arranged in sequence according to the processing feeding direction: unwinding unit 1, first coating drying unit 2, second coating drying unit 3, third coating drying unit 4, and rewinding unit 5.

[0034] The first coating drying unit 2, the second coating drying unit 3, and the third coating drying unit 4 each include: a doctor blade coating machine 8, a coating oven 9, and a traction cooling device 13. During processing, the raw material is fed out from the unwinding unit 1, and a receiving traction device 6 is set at the discharge position of the unwinding unit 1 to achieve the effect of discharge traction guidance. The raw material fed out from the unwinding unit 1 enters each coating drying unit in sequence and undergoes the "coating-drying-cooling" processing steps in sequence. The traction cooling device 13 at the front end is connected to the doctor blade coating machine 8 at the rear end, and the material transfer traction work is realized through the traction cooling device 13. Finally, the material is collected through the winding unit 5 (and a feeder conveyor 15 is set at the front end of the winding unit 5 to improve the winding tension).

[0035] The third coating drying unit 4 also includes a two-roller coating machine 11 and a second unwinding unit 10 for feeding it. The two-roller coating machine 11 is located at the rear end of the doctor blade coating machine 8 in the third coating drying unit 4. The two-roller coating machine 11 can be connected to the doctor blade coating machine 8 in the third coating drying unit 4 or directly connected to the doctor blade coating machine 8 in the front end to meet the requirements of special adhesive layer lamination.

[0036] Furthermore, the unwinding unit 1 adopts a dual-station exchange shaft unwinding structure, which enables unwinding unit 1 to change rolls without stopping the machine during processing.

[0037] Furthermore, in response to the high viscosity and easy blade tipping characteristics of silicone leather coating machine 8, a special rocker arm comma scraper head structure for silicone leather is adopted, which solves the problem of blade tipping caused by high viscosity coating liquid in traditional dry line coating heads and improves coating uniformity.

[0038] Furthermore, the dual-roller coating machine 11 addresses the current market demand for bonding special adhesive layers such as elastic fabric, PC, TPU, PET film, non-woven fabric, and microfiber fabric to silicone leather. It adopts a high-precision dual-power steel roller structure, using a bonding method with evenly driven force from both rollers, and an automatic and precise gap control system. This solves the problems of uneven bonding thickness and easy bubble formation associated with traditional single-power roller bonding.

[0039] Furthermore, the coating oven 9 is designed to meet the production needs of silicone leather; the coating oven 9 adopts a sandwich-type 100mm insulation layer, which is filled with aluminum silicate aerogel.

[0040] The coating oven 9 features a carefully designed air duct and nozzle based on fluid analysis, and is equipped with a powered guide roller for guiding the product. This solves the problems of high energy consumption caused by the lack of air ducts and nozzles and thin insulation layer in traditional dry coating lines for silicone leather. It also solves the problem of the lack of power in the guide rollers of traditional dry coating lines for silicone leather, which makes it impossible to achieve micro-tension.

[0041] Furthermore, the winding unit 5 is a composite winding structure integrating a center winding and a surface winding module; this mechanism adopts a dual-power drive design, on the one hand, the central motor drives the winding shaft to rotate to provide the core winding power, and on the other hand, the surface friction roller contacts the film roll surface to generate friction to assist the drive; it solves the problems of wrinkling, edge curling, and stretching deformation when winding special materials in traditional silicone leather dry winding mechanisms.

[0042] Furthermore, a traction storage rack 7 is also provided between the unwinding unit 1 and the first coating drying unit 2. The traction storage rack 7 is equipped with a front and rear pressure roller cutting tension traction mechanism; it realizes precise control of substrate micro-tension, simultaneously completes precise cutting and stable traction conveying of substrate, and stores a quantitative amount of substrate to buffer the speed difference between the unwinding and coating drying units, effectively avoiding the substrate from stretching, wrinkling or breaking due to tension fluctuations, ensuring the continuity of coating processing and product forming accuracy; it solves the problem that traditional dry lines cannot achieve micro-tension material storage.

[0043] Furthermore, each coating drying unit is equipped with an EPC correction mechanism 12 at the outlet of the coating oven 9. This mechanism can detect the edge position deviation of the substrate after drying in real time and dynamically correct the substrate by precisely driving the actuator. This effectively corrects the offset and skewing of the substrate caused by factors such as tension fluctuations and temperature changes during coating, drying and conveying. This solves the problems of traditional dry silicone leather production lines lacking automatic correction, resulting in large material waste and high defect rates.

[0044] Furthermore, the rear section of the third coating drying unit 4 is also equipped with a stripping and winding unit 14. The stripping mechanism of this unit first achieves precise separation of finished products and waste materials, and then the winding component provides stable traction force to neatly wind up and recycle the stripped waste materials.

[0045] Furthermore, a water-wetting mechanism is provided between the third coating drying unit 4 and the peeling and winding unit 14. Before the base paper is peeled from the silicone leather and enters the winding stage, the water-wetting mechanism can precisely replenish water to the base paper, effectively restoring its flexibility and flatness, and significantly increasing its reuse rate. At the same time, it reduces the shedding of base paper from the source, preventing paper scraps from contaminating the inside of the drying oven and adhering to the product surface, thus ensuring the cleanliness of the production environment and the quality of the finished silicone leather.

[0046] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A silicone leather coater characterized by comprising: The unwinding unit, the first film coating and drying unit, the second film coating and drying unit, the third film coating and drying unit and the winding unit are sequentially arranged in the processing direction of the feed; The first film coating and drying unit, the second film coating and drying unit and the third film coating and drying unit each comprise a doctor blade film coating machine, a film coating oven and a traction cooling device; The third film coating and drying unit further comprises a double roller film coating machine arranged at a rear position of the doctor blade film coating machine of the third film coating and drying unit; the double roller film coating machine can be connected with the doctor blade film coating machine of the third film coating and drying unit or directly connected with the doctor blade film coating machine at the front.

2. The silicone leather coating machine according to claim 1, characterized in that, The unwinding unit adopts a double-station exchange shaft unwinding structure.

3. The silicone leather coater according to claim 1, characterized in that, A rocker comma doctor head structure is adopted in the doctor blade film coating machine.

4. The silicone leather coater according to claim 1, characterized in that, A high-precision double-power steel roller structure is adopted in the double roller film coating machine.

5. The silicone leather coater according to claim 1, characterized in that, The film coating oven is designed for the production requirements of silica gel leather; the film coating oven adopts a sandwich type 100mm heat preservation layer filled with aluminum silicate aerogel; A fluid analysis is used to carefully design the air duct and air nozzle in the film coating oven, and a power guide roller for guiding the product is arranged.

6. The silicone leather coater according to claim 1, characterized in that, The winding unit is a composite winding structure integrated with a center winding and a surface winding module.

7. The silicone leather coater according to claim 1, characterized in that, A traction storage rack is further arranged between the unwinding unit and the first film coating and drying unit, and a front and rear belt tension cutting tension traction mechanism is arranged in the traction storage rack.

8. The silicone leather coater of claim 1, wherein An EPC deviation correction mechanism is arranged at the outlet position of the film coating oven of each group of film coating and drying units.

9. The silicone leather coater of claim 1, wherein A stripping winding unit is further arranged at the rear of the third film coating and drying unit.

10. The silicone leather coater according to claim 9, characterized in that A wet water mechanism is arranged between the third film coating and drying unit and the stripping winding unit.

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