Totally-enclosed air bag pressing and scraping system

Abstract

The invention discloses a full-closed air bag pressure scraping system which comprises a bearing seat assembly, a scraper girder assembly, a swing device, an air bag and a scraper material cavity assembly. The scraper material cavity assembly is reasonable in structural design, when the scraper material cavity assembly is matched with a material roller to work, the scraper material cavity assembly and the roller face of the material roller can form a relatively-closed closed space, coating is closed in the closed space, coating volatilization can be effectively reduced, and therefore pungent smells are reduced, the working environment is improved, and the health of operators is protected. Meanwhile, the contact between the coating and air is reduced, and the physical and chemical properties of the coating can be kept stable, so that the stability of the product quality is ensured. And compared with a traditional scraper air cylinder, the air bag expansion and contraction adjusting mode is more accurate, force can be evenly applied, the uniformity of the coating thickness is guaranteed, cutter wires are effectively eliminated, coating bubbles are reduced, the coating precision and effect are improved, and the coating quality is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of coating technology, in particular to a fully enclosed airbag scraping system. Background Art

[0002] Existing scrapers mostly adopt an open structure. For example, a protective film glue amount adjustable gluing mechanism disclosed in the publication number "CN213194317U" and named "Protective film glue amount adjustable gluing mechanism" is provided with a frame, a coating device, a driving device and a scraping device; the coating device includes an ink cartridge, a coating roller, a transmission roller and a reversing roller; the ink cartridge is arranged on the frame, and the ink cartridge is provided with an ink storage tank and an ink return tank; the coating roller is rotatably arranged in the ink storage tank, and the transmission roller and the reversing roller are respectively rotatably arranged on the frame; the scraping device includes The bracket, the adjustment motor, the mounting plate, the scraper and the scraper cylinder are respectively arranged on the carrier plate, the mounting plate is rotatably arranged on the bracket, and the mounting plate is connected to the adjustment motor drive, the scraper is located on the mounting plate, and the scraper cylinder is used to drive the scraper to rotate relative to the mounting plate. The scraper is provided with an ink return arc groove, and when the scraper is used to perform a glue scraping operation on the coating roller, the ink return arc groove is used to allow the glue scraped by the scraper to flow back into the ink return groove. Although this solution can achieve the purpose of scraping ink, since the scraper is an open structure, the open scraper exposes the paint to the external environment for a long time, which is easy to accelerate its volatilization. This will not only cause the paint to produce a large amount of irritating odor during use, affecting the working environment and the health of the operator, but also the physical and chemical properties of the paint may change after being exposed to the air for a long time. For example, the viscosity, fluidity and other properties are difficult to maintain stability, and thus it is difficult to ensure the stability of product quality. Furthermore, when the machine is operating at high speed, the coating roller rotates rapidly, easily causing paint to splash onto the machine and surrounding areas. This makes cleaning difficult and increases the difficulty and cost of cleaning and maintenance. Furthermore, during the coating process, a scraper cylinder is used to adjust the gap between the scraper and the coating roller, and multiple scraper cylinders are used for control. However, in actual operation, it is difficult to synchronize the movements of multiple scraper cylinders, which can easily lead to inconsistent movements and cause the scraper to tilt. Once the scraper tilts, it is impossible to maintain a uniform gap with the coating roller, resulting in uneven coating thickness, which seriously affects the coating accuracy and coating effect. Summary of the Invention

[0003] In view of the above-mentioned shortcomings, the object of the present invention is to provide a fully enclosed airbag scraping system with reasonable structural design, reduced paint volatilization and good coating effect.

[0004] To achieve the above purpose, the technical solution provided by the present invention is:

[0005] A fully enclosed airbag scraping system, which includes a bearing seat assembly, a scraper beam assembly, a swinging device, an airbag and a scraper material chamber assembly. The two ends of the scraper beam assembly are arranged on the bearing seat assembly. The scraper material chamber assembly is arranged on the scraper beam assembly through a linear sliding assembly, and can form a relatively closed space with the roller surface of the material roller when close to the material roller. The swinging device is arranged on the scraper beam assembly and can drive the scraper material chamber assembly to reciprocate along the sliding direction of the linear sliding assembly. The airbag is arranged in the scraper material chamber assembly and adjusts the distance between the upper scraper in the scraper material chamber assembly and the roller surface of the material roller through its own expansion and contraction.

[0006] As a preferred solution of the present invention, the scraper beam assembly includes a scraper beam, a beam cover plate and a scraper shaft head. The beam cover plate is arranged at both ends of the scraper beam, and the scraper shaft head is arranged on the beam cover plate, and the structural stability is good.

[0007] As a preferred embodiment of the present invention, the swing device includes a rotary reduction motor, an eccentric shaft head, a bearing and an eccentric groove block. The rotary reduction motor is arranged on the scraper beam, the eccentric shaft head is arranged on the drive shaft of the rotary reduction motor, the bearing sleeve is arranged on the eccentric shaft head, and the eccentric groove block is arranged on the back of the scraper material chamber assembly and is provided with a rotating groove adapted to the bearing. After power is turned on, the rotary reduction motor drives the eccentric shaft head to rotate, so that the scraper material chamber assembly can move back and forth. This effectively solves the problem of the scraper easily generating knife wires during the production process, thereby affecting the scraping effect of the paint, and also solves the problem of the paint being stuck between the scraper and the material roller due to crystallization, affecting the quality of the coating material.

[0008] As a preferred solution of the present invention, the bearing seat assembly includes a scraper fixing plate, a bearing seat, a joint bearing, a propulsion cylinder, a flip positioning wheel and a flip tension spring. The bearing seat is arranged on the scraper fixing plate through a front and rear sliding assembly. The propulsion cylinder is arranged on the scraper fixing plate and can drive the bearing seat to move forward and backward. The scraper shaft head is arranged on the bearing seat through a joint bearing. The flip positioning wheel is arranged on the scraper shaft head. One end of the flip tension spring is fixed on the flip positioning wheel, and the other end passes through the wheel surface of the flip positioning wheel and is fixed to the bearing seat, which brings convenience to operation and use.

[0009] As a preferred solution of the present invention, a cylinder latch block is provided on the bearing seat, a locking hole is provided on the cylinder latch block, and a locking cylinder is provided at a position of the beam sealing plate corresponding to the cylinder latch block, and the locking cylinder can extend into the locking hole when its piston rod is extended to achieve the locking purpose.

[0010] As a preferred solution of the present invention, the front and rear sliding components include front and rear guide rails, V-shaped rollers and eccentric rollers. The front and rear guide rails are fixed on the inner wall of the scraper fixing plate. The V-shaped rollers are arranged on the bearing seat corresponding to the top surface position of the front and rear guide rails. The eccentric rollers are arranged on the bearing seat corresponding to the bottom surface position of the front and rear guide rails. The matching effect is good, ensuring smooth and precise sliding.

[0011] As a preferred solution of the present invention, the flip positioning wheel is semicircular, and the bearing seat is provided with a rotation positioning block to prevent the flip positioning wheel from excessive rotation, so that the flip angle is controlled and the positioning effect is good.

[0012] As a preferred solution of the present invention, the scraper material chamber assembly includes a scraper chamber seat, an upper scraper, an upper knife holder, a knife holder rotating shaft, a lower sealing knife, a flexible side sealing component and a tensioning spring, the front of the scraper chamber seat is concave inward to form a material chamber, the flexible side sealing component is arranged at both sides of the material chamber, and is provided with an arc cover adapted to the shape of the material roller, the upper knife holder is arranged on the scraper chamber seat corresponding to the upper edge of the material chamber, the upper scraper is arranged on the upper knife holder, the airbag is located between the upper knife holder and the scraper chamber seat, one end of the tensioning spring is connected to the scraper chamber seat, and the other end is connected to the upper knife holder, the lower sealing knife is arranged on the scraper chamber seat corresponding to the lower edge of the material chamber, the material chamber, the flexible side sealing component, the upper scraper, the lower sealing knife and the roller surface of the material roller form the closed space, which effectively prevents paint volatilization and reduces pollution to the environment and harm to the health of operators. At the same time, the paint is not easy to splash onto the machine and the surrounding area during the coating process, which is conducive to keeping the machine and the site clean.

[0013] As a preferred solution of the present invention, a sealing membrane is provided in the material chamber at a connection position between the upper blade holder and the scraper chamber seat, thereby further enhancing the sealing performance of the material chamber.

[0014] As a preferred solution of the present invention, the flexible side sealing component includes a box seat and a sponge arranged on the box seat, and the elastic deformation of the sponge is used to achieve a close fit with the material roller, thereby achieving a good sealing effect.

[0015] The sealing membrane is preferably a Teflon membrane. The Teflon membrane has excellent flexibility and chemical stability, can maintain good performance in a wide temperature range, is not prone to chemical reactions with the coating, and is flexible enough to meet the adjustment requirements of the upper tool holder within a certain angle range.

[0016] The sponge is preferably EPDM sponge. EPDM sponge has good high and low temperature resistance, chemical corrosion resistance, and is not easily deformed. It can maintain stable elasticity and sealing performance under various harsh environmental conditions to ensure a good sealing effect.

[0017] The airbag is long and flat. This shape not only provides a strong force within a limited space, but also ensures uniform distribution of thrust on the upper scraper during expansion. This avoids problems such as uneven force on the upper scraper and inconsistent coating thickness caused by the irregular shape of the airbag, helping to improve coating quality. It also facilitates the installation and fixation of the airbag itself, enhancing the overall stability and reliability of the equipment. The airbag extends along the length of the upper blade holder. When inflated, it pushes the rear end of the upper blade holder upward. The blade holder's rotating shaft pushes the front end downward, evenly pushing the upper scraper toward the material roller, maintaining a uniform spacing between the upper scraper and the roller surface, thereby achieving uniform adjustment of the coating thickness.

[0018] The scraper chamber seat is equipped with an airbag fixing plate. Two symmetrical limiting strips are located on either side of the plate. A limiting groove for the airbag is formed between the two limiting strips. Both ends of the airbag are secured to the plate via airbag fixing blocks. This effectively ensures the airbag's positional stability during operation, allowing it to expand and contract in a predetermined direction and pattern, thereby precisely adjusting the distance between the upper scraper and the material roller surface.

[0019] A return box is provided on the back of the scraper chamber seat, and a reflux port is provided on the scraper chamber seat to connect the material chamber with the return box. During the coating process, excess paint can flow into the return box through the reflux port and then circulate back to the material trough.

[0020] The reflux port is located at the upper part of the material cavity, ensuring that the amount of coating in the material cavity is sufficient and stable during the coating process, and only when there is too much coating will it overflow through the reflux port.

[0021] The bottom of the scraper chamber seat is provided with a feeding port connected to the material chamber, which is conducive to the uniform distribution and stable supply of the coating.

[0022] The material roller is preferably a ceramic anilox roller. The ceramic material of the ceramic anilox roller has high hardness, wear resistance and corrosion resistance, can withstand greater pressure and friction, has a long service life, and is suitable for coating various types of corrosive coatings.

[0023] The beneficial effects of the present invention are as follows: the structural design of the present invention is reasonable, and the scraper material chamber assembly, when working in conjunction with the material roller, can form a relatively closed space with the roller surface of the material roller, thereby enclosing the coating in the closed space. Compared with the traditional open scraper structure, the fully enclosed design can effectively reduce the volatilization of the coating, thereby reducing the irritating odor, improving the working environment, and protecting the health of the operator. At the same time, since the contact between the coating and the air is reduced, its physical and chemical properties can remain stable, thereby ensuring the stability of the product quality. Moreover, the expansion and contraction adjustment method using the airbag is more precise than the traditional scraper cylinder adjustment, and can apply force evenly, ensure the uniformity of the coating thickness, and improve the coating accuracy and effect. In addition, the setting of the swing device enables the scraper material chamber assembly to reciprocate left and right, effectively eliminating the knife wire, reducing paint bubbles, improving the coating effect, and further improving the coating quality.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the decomposition structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the scraper beam assembly in the present invention.

[0028] Figure 4 It is a schematic cross-sectional structural diagram of the scraper beam assembly in the present invention.

[0029] Figure 5 It is a schematic diagram of the exploded structure of the scraper beam assembly in the present invention.

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the bearing seat assembly in the present invention.

[0031] Figure 7 It is a schematic diagram of the exploded structure of the bearing seat assembly in the present invention.

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the scraper chamber assembly in the present invention. Figure 1 .

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the scraper chamber assembly in the present invention. Figure 2 .

[0034] Figure 10 It is a schematic cross-sectional view of the scraper chamber assembly of the present invention.

[0035] Figure 11It is a schematic diagram of the exploded structure of the scraper chamber assembly in the present invention.

[0036] Figure 12 It is a schematic diagram of the working structure of the present invention. DETAILED DESCRIPTION

[0037] See also Figures 1 to 12 This embodiment provides a fully enclosed airbag scraping system, comprising a material roller 1, a bearing seat assembly 2, a scraper beam assembly 3, an oscillating device 4, an airbag 5, and a scraper chamber assembly 6. The material roller 1 is preferably a ceramic anilox roller. The ceramic material of the ceramic anilox roller has high hardness, wear resistance, and corrosion resistance, can withstand high pressure and friction, has a long service life, and is suitable for coating various types of corrosive coatings. The surface of the ceramic anilox roller has a predetermined mesh structure. These patterns can store a certain amount of coating, and during the coating process, the coating is evenly applied to the substrate through the transfer effect of the patterns.

[0038] The two ends of the scraper beam assembly 3 are arranged on the bearing seat assembly 2. Specifically, the scraper beam assembly 3 includes a scraper beam 31, a beam covering plate 32 and a scraper shaft head 33. The beam covering plate 32 is arranged at both ends of the scraper beam 31, and the scraper shaft head 33 is arranged on the beam covering plate 32, and the structural stability is good.

[0039] The bearing seat assembly 2 includes a scraper fixing plate 21, a bearing seat 22, a joint bearing 23, a propulsion cylinder 24, a flip positioning wheel 25 and a flip tension spring 26. The bearing seat 22 is arranged on the scraper fixing plate 21 through a front and rear sliding assembly. Specifically, the front and rear sliding assembly includes front and rear guide rails 27, a V-shaped roller 28 and an eccentric roller 29. The front and rear guide rails 27 are fixed on the inner wall of the scraper fixing plate 21. The V-shaped roller 28 is arranged on the bearing seat 22 corresponding to the top surface position of the front and rear guide rails 27. The eccentric roller 29 is arranged on the bearing seat 22 corresponding to the bottom surface position of the front and rear guide rails 27. The matching effect is good, ensuring smooth and precise sliding.

[0040] The propulsion cylinder 24 is arranged on the scraper fixing plate 21 through the cylinder mounting plate 211, and can drive the bearing seat 22 to move forward and backward. Specifically, the cylinder body of the propulsion cylinder 24 is fixed on the scraper fixing plate 21, and the piston rod of the propulsion cylinder 24 is connected to the bearing seat 22. Preferably, a fine-tuning rod 212 can be provided on the scraper fixing plate 21, one end of the fine-tuning rod 212 is provided with a handwheel 213, a limiting cavity is provided in the bearing seat 22, and an adjustment block 214 is movably provided in the limiting cavity, the other end of the fine-tuning rod 212 extends into the bearing seat 22 and is connected to the adjustment block 214, and the distance range of the bearing seat 22 moving forward is adjusted by twisting the fine-tuning rod 212.

[0041] The scraper shaft head 33 is mounted on the bearing seat 22 via a spherical bearing 23. The flip positioning wheel 25 is mounted on the scraper shaft head 33. One end of the flip tension spring 26 is fixed to the flip positioning wheel 25, while the other end passes through the wheel surface of the flip positioning wheel 25 and is fixed to the bearing seat 22. The flip positioning wheel 25 is semicircular in shape, and its circumference is provided with a spring groove that matches the flip tension spring 26, which can move and limit the flip tension spring 26. The bearing seat 22 is provided with a rotational positioning block 210 to prevent the flip positioning wheel 25 from excessive rotation. When the flip positioning wheel 25 rotates to a certain extent, the rotational positioning block 210 will block it, thereby controlling the flip angle. In the initial state, the flip tension spring 26 is in a compressed state. When the scraper chamber assembly 6 is manually flipped up, the scraper beam assembly 3 is driven to rotate together, and the flip tension spring 26 is gradually stretched by the flip positioning wheel 25; that is, in the initial stage of flipping, less force can be used to flip, which effectively saves effort; in the latter stage of flipping, the flip tension spring 26 is stretched, which effectively prevents the operator from causing the scraper chamber assembly 6 or the scraper beam assembly 3 to collide with the frame due to excessive force. After the cleaning process of the scraper chamber assembly 6 is completed, the scraper chamber assembly 6 is pushed back. In the latter stage of the process of the scraper chamber assembly 6 returning to the working state, the flip tension spring 26 is compressed, which plays a buffering role to prevent collision.

[0042] A cylinder latch block 215 is provided on the bearing seat 22, and a locking hole is provided on the cylinder latch block 215. A locking cylinder 34 is provided at the position of the beam sealing plate 32 corresponding to the cylinder latch block 215. The locking cylinder 34 can extend into the locking hole when its piston rod is extended, thereby achieving the locking purpose, ensuring that the components of the coating process are relatively fixed, and ensuring the coating accuracy; when unlocking is required, the piston rod of the locking cylinder 34 can be controlled to retract.

[0043] The scraper cavity assembly 6 is arranged on the scraper beam assembly 3 through a linear sliding assembly 7. Specifically, the linear sliding assembly 7 includes a linear slide 71 and a linear slider 72 adapted to the linear slide 71. The linear slider 72 is arranged on the front of the scraper beam 31, and the linear slide 71 is arranged on the back of the scraper cavity seat. When the scraper cavity assembly 6 is close to the material roller 1, it can form a relatively closed space with the roller surface of the material roller 1.

[0044] The swinging device 4 is arranged on the scraper beam assembly 3 and can drive the scraper chamber assembly 6 to reciprocate along the sliding direction of the linear sliding assembly 7. Specifically, the swinging device 4 includes a rotary reduction motor 41, an eccentric shaft head 42, a bearing 43 and an eccentric slot block 44. The rotary reduction motor 41 is arranged on the scraper beam 31, the eccentric shaft head 42 is arranged on the drive shaft of the rotary reduction motor 41, and the bearing 43 is sleeved on the eccentric shaft head 42. After power is turned on, the rotary reduction motor 41 drives the eccentric shaft head 42 to rotate, and with the help of the rotation groove of the bearing 43 and the eccentric slot block 44, the scraper chamber assembly reciprocates left and right. The reciprocating range is about three millimeters, which can effectively eliminate knife wires, reduce paint bubbles, improve coating effects, and further enhance coating quality.

[0045] The airbag 5 is disposed within the scraper chamber assembly 6 and adjusts the distance between the upper scraper 62 in the scraper chamber assembly 6 and the roller surface of the material roller 1 by its own expansion and contraction. Specifically, the scraper chamber assembly 6 includes a scraper chamber seat 61, an upper scraper 62, an upper blade holder 63, a blade holder rotating shaft 64, a lower sealing blade 65, a flexible side sealing member 66, and a tension spring 67. The front surface of the scraper chamber seat 61 is concave inward to form a material chamber 611.

[0046] The flexible side sealing components 66 are arranged on both sides of the material chamber 611 and are provided with an arc-shaped cover adapted to the outer shape of the material roller 1. Specifically, the flexible side sealing components 66 include a box seat 661 and a sponge 662 provided on the box seat 661. The box seat 661 is installed on both sides of the scraper chamber seat 61 and fixes the sponge 662. The sponge 662 is preferably an EPDM sponge. EPDM sponge has good high and low temperature resistance, chemical corrosion resistance, and is not easy to deform. It can maintain stable elasticity and sealing performance under various harsh environmental conditions to ensure a good sealing effect. During operation, the arc-shaped cover of the sponge can fit tightly against the surface of the material roller 1, and the elastic deformation of the sponge is used to achieve a tight fit with the material roller 1, thereby achieving a good sealing effect.

[0047] The upper blade holder 63 is arranged on the scraper chamber seat 61 corresponding to the upper edge position of the material chamber 611, the upper scraper 62 is arranged on the upper blade holder 63 through the blade holder strip 68, the airbag 5 is located between the upper blade holder 63 and the scraper chamber seat 61, one end of the tensioning spring 67 is connected to the scraper chamber seat 61, and the other end is connected to the upper blade holder 63, the lower sealing knife 65 is arranged on the scraper chamber seat 61 corresponding to the lower edge position of the material chamber 611 through the sealing knife strip 615, and the closed space is formed between the material chamber 611, the flexible side sealing component 66, the upper scraper 62, the lower sealing knife 65 and the roller surface of the material roller 1. During operation, the expansion and contraction of the airbag 5 adjusts the angle of the upper blade holder 63, moving the upper scraper 62 closer to or further away from the material roller 1. The airbag 5 applies force evenly, and the airbag 5 and tension spring 67 work together to precisely adjust and stably control the distance between the upper scraper 62 and the roller surface of the material roller 1. This allows the upper scraper 62 to maintain stable contact with the material roller 1 and maintain an appropriate distance, ensuring uniform coating thickness, reducing paint bubbles and the occurrence of blade threads, and improving coating accuracy and quality. The flexible side seals 66 tightly adhere to the surface of the material roller 1, preventing paint leakage from both sides, ensuring the sealing of the material chamber 611, and effectively preventing paint volatilization, reducing environmental pollution and harm to the health of operators. Furthermore, the sealing effect of the flexible side seals 66 prevents paint from splashing onto the machine and surrounding areas during the coating process, helping to keep the machine and surrounding areas clean and reducing cleaning and maintenance costs.

[0048] To enhance the sealing effect, a sealing diaphragm 69 is provided at the connection between the upper blade holder 63 and the scraper chamber seat 61 in the material chamber 611. One edge of the sealing diaphragm 69 is secured to the upper blade holder 63 via a diaphragm pressing plate, and the other edge is secured to the scraper chamber seat 61 via a diaphragm pressing plate. The sealing diaphragm 69 is preferably a Teflon diaphragm. Teflon diaphragms have excellent flexibility and chemical stability, maintaining good performance over a wide temperature range and not easily reacting chemically with the coating. Furthermore, their flexibility allows the upper blade holder 63 to be adjusted within a certain angle range. The sealing diaphragm 69 seals the gap between the upper blade holder 63 and the scraper chamber seat 61, further enhancing the sealing performance of the material chamber 611. This prevents paint from leaking through the connection gap between the upper blade holder 63 and the scraper chamber seat 61, reduces the possibility of paint volatilization, effectively isolates the paint from contact with the outside air, and prevents changes in the paint's physical and chemical properties due to oxidation, moisture absorption, and other factors, thereby ensuring the stability of the coated product quality.

[0049] The airbag 5 is long and flat. This shape not only provides a strong force within a limited space, but also ensures that the thrust on the upper scraper 62 is evenly distributed during expansion. This avoids problems such as uneven force on the upper scraper 62 and inconsistent coating thickness caused by the irregular shape of the airbag, helping to improve coating quality. It also facilitates the installation and fixation of the airbag itself, enhancing the overall stability and reliability of the equipment. The airbag 5 extends along the length of the upper blade holder 63. When the airbag 5 expands, it pushes the rear end of the upper blade holder 63 upward. Under the action of the blade holder rotating shaft 64, the front end of the upper blade holder 63 is pressed downward, evenly pushing the upper scraper 62 closer to the material roller 1, maintaining a uniform spacing between the upper scraper 62 and the roller surface of the material roller 1, thereby achieving uniform adjustment of the coating thickness.

[0050] The scraper chamber seat 61 is provided with an airbag fixing plate 610. Limiting strips are symmetrically arranged on both sides of the airbag fixing plate 610. A limiting groove for the airbag 5 is formed between the two limiting strips. Both ends of the airbag 5 are fixed to the airbag fixing plate 610 via airbag fixing blocks. This effectively ensures the positional stability of the airbag during operation, allowing it to expand and contract in a predetermined direction and manner, thereby precisely adjusting the distance between the upper scraper 62 and the roller surface of the material roller 1.

[0051] A return box 612 is provided on the back of the scraper chamber seat 61. A reflux port 613 is provided on the scraper chamber seat 61, connecting the material chamber 611 with the return box 612. During the coating process, excess paint can flow into the return box 612 through the reflux port 613 and then circulate back to the material trough. Preferably, the reflux port 613 is located at the upper portion of the material chamber 611 to ensure that the amount of paint in the material chamber 611 is sufficient and stable during the coating process. Only when there is too much paint will it overflow through the reflux port 613. A feed port connected to the material chamber 611 is provided at the bottom of the scraper chamber seat 61, which is conducive to the uniform distribution and stable supply of paint. The feed port is equipped with an elbow interface 614 to facilitate installation.

[0052] When working, see Figure 12 When the scraper cavity assembly 6 cooperates with the material roller 1, it can form a relatively closed space with the roller surface of the material roller 1, enclosing the paint in the closed space. Compared with the traditional open scraper structure, the fully enclosed design can effectively reduce the volatilization of the paint, thereby reducing the irritating odor, improving the working environment, and protecting the health of the operator. At the same time, since the paint has less contact with the air, its physical and chemical properties can remain stable, thereby ensuring the stability of product quality. At the same time, the setting of the swing device 4 enables the scraper cavity assembly 6 to reciprocate left and right, effectively eliminating blade threads, reducing paint bubbles, improving the coating effect, and further improving the coating quality.

[0053] When adjustment is needed, the air pressure of the airbag 5 can be adjusted through the air valve. When the airbag 5 is inflated, a uniform thrust can be applied to the tail of the upper tool holder 63, so that the front of the upper tool holder 63 drives the upper scraper 62 to press down evenly, so that the distance between the upper scraper 62 and the roller surface of the material roller 1 remains uniform, ensuring the consistency of the coating thickness and the coating quality. When the airbag 5 contracts, the tensioning spring 67 can pull the tail of the upper tool holder 63 to press down, so that the front of the upper tool holder 63 drives the upper scraper 62 to lift up evenly, and correspondingly increase the distance between the upper scraper 62 and the roller surface of the material roller 1. The fully enclosed airbag pressure scraping system of the present invention can be widely used in the coating field and the printing field, such as high-definition pre-printing machine water-based flexographic printing, satellite-type high-definition machine water-based flexographic printing, etc. It can be used in coating machine industry products in other fields such as dry laminating machines, lithium battery coating machines, solvent-based glue coating machines, and water-based glue coating machines, and has a wide range of applications.

[0054] Based on the disclosure and teachings of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this description, these terms are only for convenience of description and do not constitute any limitation to the present invention. As described in the above embodiments of the present invention, other systems obtained by using the same or similar structures are all within the scope of protection of the present invention.

Claims

1. A fully enclosed airbag scraping system, comprising a bearing seat assembly, characterized in that: It also includes a scraper beam assembly, a swinging device, an airbag and a scraper material chamber assembly. The two ends of the scraper beam assembly are arranged on the bearing seat assembly. The scraper material chamber assembly is arranged on the scraper beam assembly through a linear sliding assembly, and can form a relatively closed space with the roller surface of the material roller when close to the material roller. The swinging device is arranged on the scraper beam assembly and can drive the scraper material chamber assembly to reciprocate along the sliding direction of the linear sliding assembly. The airbag is arranged in the scraper material chamber assembly and adjusts the distance between the upper scraper in the scraper material chamber assembly and the roller surface of the material roller through its own expansion and contraction.

2. The fully enclosed airbag scraping system according to claim 1, characterized in that: The scraper beam assembly includes a scraper beam, a beam sealing plate and a scraper shaft head. The beam sealing plates are arranged at both ends of the scraper beam, and the scraper shaft head is arranged on the beam sealing plates.

3. The fully enclosed airbag scraping system according to claim 2, characterized in that: The swinging device includes a rotary reduction motor, an eccentric shaft head, a bearing and an eccentric groove block. The rotary reduction motor is arranged on the scraper beam, the eccentric shaft head is arranged on the drive shaft of the rotary reduction motor, the bearing is sleeved on the eccentric shaft head, and the eccentric groove block is arranged on the back side of the scraper material chamber assembly and is provided with a rotating groove adapted to the bearing.

4. The fully enclosed airbag scraping system according to claim 2, characterized in that: The bearing seat assembly includes a scraper fixing plate, a bearing seat, a joint bearing, a propulsion cylinder, a flip positioning wheel and a flip tension spring. The bearing seat is arranged on the scraper fixing plate through a front and rear sliding assembly. The propulsion cylinder is arranged on the scraper fixing plate and can drive the bearing seat to move forward and backward. The scraper shaft head is arranged on the bearing seat through a joint bearing. The flip positioning wheel is arranged on the scraper shaft head. One end of the flip tension spring is fixed on the flip positioning wheel, and the other end passes through the wheel surface of the flip positioning wheel and is fixed on the bearing seat.

5. The fully enclosed airbag scraping system according to claim 4, characterized in that: The bearing seat is provided with a cylinder latch block, and the cylinder latch block is provided with a locking hole. The beam sealing plate is provided with a locking cylinder at a position corresponding to the cylinder latch block, and the locking cylinder can extend into the locking hole when its piston rod is extended.

6. The fully enclosed airbag scraping system according to claim 4, characterized in that: The front and rear sliding components include front and rear guide rails, V-shaped rollers and eccentric rollers. The front and rear guide rails are fixed on the inner wall of the scraper fixing plate. The V-shaped rollers are arranged on the bearing seat corresponding to the top surface position of the front and rear guide rails. The eccentric rollers are arranged on the bearing seat corresponding to the bottom surface position of the front and rear guide rails.

7. The fully enclosed airbag scraping system according to claim 4, characterized in that: The flip positioning wheel is semicircular, and a rotation positioning block is provided on the bearing seat to prevent the flip positioning wheel from excessive rotation.

8. The fully enclosed airbag scraping system according to any one of claims 1 to 7, characterized in that: The scraper material chamber assembly includes a scraper chamber seat, an upper scraper, an upper knife holder, a knife holder rotating shaft, a lower sealing knife, a flexible side sealing component and a tensioning spring. The front of the scraper chamber seat is concave inward to form a material chamber. The flexible side sealing components are arranged on both sides of the material chamber and are provided with an arc-shaped cover adapted to the shape of the material roller. The upper knife holder is arranged on the scraper chamber seat corresponding to the upper edge of the material chamber. The upper scraper is arranged on the upper knife holder. The airbag is located between the upper knife holder and the scraper chamber seat. One end of the tensioning spring is connected to the scraper chamber seat, and the other end is connected to the upper knife holder. The lower sealing knife is arranged on the scraper chamber seat corresponding to the lower edge of the material chamber. The closed space is formed between the material chamber, the flexible side sealing component, the upper scraper, the lower sealing knife and the roller surface of the material roller.

9. The fully enclosed airbag scraping system according to claim 8, characterized in that: The material chamber is provided with a sealing diaphragm at a connection position between the upper blade holder and the scraper chamber seat.

10. The fully enclosed airbag scraping system according to claim 8, characterized in that: The flexible side sealing component includes a box seat and a sponge arranged on the box seat.

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