Apparatus and method for localized casting of release layer of recycled plastic electroplated aluminum foil

Abstract

This invention relates to the field of cast coating technology, specifically to a partial cast coating apparatus and method for release layers of recycled plastic electroplated aluminum foil, comprising: a support, and a protective frame and a fixing plate fixed on the support, wherein a coating head is fixed inside the protective frame; a bidirectional translation mechanism disposed on the fixing plate, wherein a swaying component is disposed on the bidirectional translation mechanism, the swaying component including symmetrically arranged scrapers, wherein the bidirectional translation mechanism can drive the two scrapers to move toward each other or away from each other through the swaying component; and a follow-up lifting mechanism disposed on the fixing plate and connected to the swaying component, wherein the follow-up lifting mechanism can adjust the height of the scrapers through the swaying component and control the scrapers to perform swaying actions when the scrapers are translated, thereby controlling the translation, lifting, and swaying actions of the scrapers to smooth out thickened areas at the edges of the material.

Description

Technical Field

[0001] This invention relates to the field of cast coating technology, specifically to a local cast coating apparatus and method for the release layer of recycled plastic electroplated aluminum foil. Background Technology

[0002] The release layer of recycled plastic electroplated aluminum hot stamping foil is a key functional layer in the hot stamping process. Its core function is to achieve precise separation of the image and the substrate during hot stamping.

[0003] Release agent is the core material for preparing release layer. It is usually composed of organosilicon compounds, fluorides, polyester compounds, etc. After the release agent is prepared, it can be evenly coated on the surface of the carrier to form a thin, smooth film. After coating, it can be scratched by infrared drying.

[0004] During the coating process, roller coating or spray coating methods can be used. However, if roller coating is used, roller marks are easily formed on the coating surface. If spray coating is used, the material utilization rate will be low.

[0005] To address this, the coating process can be improved through flow coating. Flow coating mainly controls the flow of fluid on the substrate surface, which can achieve high-precision coating and high material utilization, reducing material waste. However, in the actual coating process, the edge coating area is prone to edge bulging due to the Marangoni effect (surface tension gradient), forming "coffee ring" defects at the microscale. In addition, the uneven distribution of shear rate during the flow process will eventually cause the coating in the edge area to thicken, resulting in uneven coating. Summary of the Invention

[0006] The purpose of this invention is to provide a localized casting coating apparatus and method for a release layer of recycled plastic electroplated aluminum foil, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A localized casting coating apparatus for release layers of recycled plastic electroplated aluminum foil includes:

[0009] A bracket, and a protective frame and a fixing plate fixed on the bracket, wherein a coating head is fixed inside the protective frame;

[0010] Also includes:

[0011] A bidirectional translation mechanism is provided on the fixed plate. The bidirectional translation mechanism is provided with a swing component. The swing component includes symmetrically arranged scrapers. The bidirectional translation mechanism can drive the two scrapers to move toward each other or away from each other through the swing component.

[0012] A follow-up lifting mechanism is mounted on the fixed plate and connected to the swaying component. The follow-up lifting mechanism can adjust the height of the scraper through the swaying component and control the scraper to perform swaying action when the scraper moves horizontally.

[0013] As a further aspect of the present invention: the bidirectional translation mechanism includes a second motor fixed on the fixed plate, a bidirectional lead screw rotatably mounted on the fixed plate and connected to the output shaft of the second motor, threaded sleeves symmetrically arranged are threadedly connected to the bidirectional lead screw, and a guide assembly connected to the threaded sleeves is provided on the fixed plate.

[0014] As a further embodiment of the present invention: the guiding assembly includes a guide post fixed on the fixed plate, a guide sleeve slidably mounted on the guide post and symmetrically arranged, and a connecting plate fixedly connected to the threaded sleeve is fixed to the side wall of the guide sleeve.

[0015] As a further embodiment of the present invention: the oscillation assembly includes a follower rod fixed to the side wall of the threaded sleeve and arranged symmetrically, the outer circumferential wall of the follower rod having a spiral groove and a vertical groove, a sliding sleeve fixedly connected to the scraper being slidably mounted on the follower rod, and a limiting block fixedly fitted to the spiral groove and the vertical groove being fixed to the inner wall of the sliding sleeve.

[0016] As a further embodiment of the present invention: the follower lifting mechanism includes a sliding block that slides along the axial direction of the follower rod and abuts against the sliding sleeve, a support column that is slidably connected to the sliding block is fixed on the guide sleeve, and a limit column is fixed on the side wall of the sliding block;

[0017] It also includes a guide component disposed on the fixed plate for guiding the limiting post to move in the vertical direction.

[0018] As a further embodiment of the present invention: the guiding component includes a support plate fixed on the fixed plate, and the support plate has guide grooves that are symmetrically arranged and slidably engaged with the limiting post.

[0019] As a further embodiment of the present invention: the guiding assembly further includes a guide rod rotatably mounted on the support plate and symmetrically arranged, and a first fixing block and a second fixing block that abut against the guide rod are fixed on the support plate.

[0020] As a further embodiment of the present invention: the support is further provided with a conveying assembly and a pumping assembly, wherein the conveying assembly includes conveying rollers rotatably mounted on the support and arranged symmetrically, a conveyor belt is sleeved on the conveying rollers, a first motor is fixed on the support, and the output shaft of the first motor is connected to one of the conveying rollers.

[0021] As a further embodiment of the present invention: the pumping assembly includes a storage tank fixed on the protective frame, and the bottom of the storage tank is connected to a delivery pipe that communicates with the coating head.

[0022] A method for localized casting of release layer for recycled plastic electroplated aluminum foil includes the following steps:

[0023] Step 1: Place the material to be coated onto the conveyor assembly and control the material to move toward the coating head using the conveyor assembly;

[0024] Step 2: When the material moves to the position where it mates with the coating head, the coating liquid is controlled to be sprayed onto the material surface through the coating head by the pumping component.

[0025] Step 3: Under the action of the bidirectional translation mechanism, the two scrapers are controlled by the yaw component to move along the side of the material toward the center area to perform a scraping action on the coating layer that has thickened at the edge.

[0026] Step 4: Under the action of the follow-up lifting mechanism, the scraper is gradually raised to a certain height and tilted at a certain angle by the control of the tilting component, so as to push the coating material in the thickened area toward the center area of ​​the material.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: The present application can achieve uniformity of the coating area by scraping the coating liquid in the edge thickening area. Specifically, the two scrapers can be moved towards each other by the bidirectional translation mechanism to scrape the coating liquid in the edge thickening area. At the same time, under the action of the follow-up lifting mechanism, the scraper is gradually raised to a certain height by the swing component to spread the accumulated coating liquid evenly in the area close to the coating center. During the lifting process of the scraper, it can swing at a certain angle to gather the coating liquid towards the coating head and mix it with the coating liquid with strong flowability, thereby balancing the flow rate of the coating liquid and ensuring uniform coating.

[0028] By controlling the proximity of the scrapers, the thickened coating area at the edge can be smoothed out, and the coating liquid in the thickened area will be gradually pushed towards the coating center. During the pushing process, as the distance between the scraper and the coating area gradually increases, the coating liquid can be evenly spread in the area close to the coating center, and then evenly distributed to the entire coating area through the subsequent flow of the coating liquid.

[0029] By controlling the swivel angle, the coating liquid in areas with thickened edges and poor flowability can be gathered towards the coating center and the area near the coating head. Through mixing with the coating liquid in this area, the fluidity of the coating liquid is neutralized. This effectively prevents the coating liquid from flowing back to the edges and thickening again, while ensuring that it always has a certain fluidity, preventing the coating liquid from accumulating in the coating center and gradually flowing to the entire coating area. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an embodiment of a partial flow coating device for a release layer of recycled plastic electroplated aluminum foil.

[0031] Figure 2 This is a schematic diagram of the structure from another angle in an embodiment of a partial flow coating device for the release layer of recycled plastic electroplated aluminum foil.

[0032] Figure 3 This is a schematic diagram of the structure of the storage box, conveying pipe, and coating head in an embodiment of a partial flow coating device for release layer of recycled plastic electroplated aluminum foil.

[0033] Figure 4 This is a schematic diagram showing the connection relationship between the bidirectional translation mechanism, the partial sway component, and the follow-up lifting mechanism in an embodiment of a partial coating device for release layers of recycled plastic electroplated aluminum foil.

[0034] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0035] Figure 6 This is a schematic diagram of the structure of a partial bidirectional translation mechanism, a partial swaying mechanism, and a partial follow-up lifting mechanism in an embodiment of a partial coating device for release layers of recycled plastic electroplated aluminum foil.

[0036] Figure 7 This is a schematic diagram of the partial oscillation component and the partial follow-up lifting mechanism in an embodiment of a partial coating device for release layers of recycled plastic electroplated aluminum foil.

[0037] Figure 8 This is an exploded structural diagram of part of the oscillation component and part of the follow-up lifting mechanism in an embodiment of a partial flow coating device for release layer of recycled plastic electroplated aluminum foil.

[0038] Figure 9 This is a schematic diagram of the structure of a partial follow-up lifting mechanism in an embodiment of a partial flow coating device for release layers of recycled plastic electroplated aluminum foil.

[0039] Figure 10 This is an exploded structural diagram of a portion of the follow-up lifting mechanism in an embodiment of a partial flow coating device for release layers of recycled plastic electroplated aluminum foil.

[0040] Figure 11 This is a partial half-section diagram of an embodiment of a device for the partial coating of release layer for recycled plastic electroplated aluminum foil.

[0041] In the diagram: 1. Support frame; 2. First motor; 3. Conveyor belt; 4. Protective frame; 5. Storage bin; 6. Conveying pipe; 7. Coating head; 8. Fixing plate; 9. Second motor; 10. Bidirectional lead screw; 11. Threaded sleeve; 12. Guide post; 13. Guide sleeve; 14. Connecting plate; 15. Follower rod; 1501. Spiral groove; 1502. Vertical groove; 16. Support post; 17. Sliding block; 18. Limiting post; 19. Sliding sleeve; 20. Limiting block; 21. Scraper; 22. Support plate; 2201. First horizontal groove; 2202. Inclined groove; 2203. Second horizontal groove; 2204. Straight groove; 23. Guide rod; 24. First fixing block; 25. Second fixing block. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0044] Please see Figures 1-11 In this embodiment of the invention, the localized casting coating apparatus for the release layer of recycled plastic electroplated aluminum foil includes:

[0045] The bracket 1, and the protective frame 4 and the fixing plate 8 fixed on the bracket 1, wherein the coating head 7 is fixed inside the protective frame 4;

[0046] Also includes:

[0047] A bidirectional translation mechanism is provided on the fixed plate 8. The bidirectional translation mechanism is provided with a swing component. The swing component includes scrapers 21 arranged symmetrically. The bidirectional translation mechanism can drive the two scrapers 21 to move toward each other or away from each other through the swing component.

[0048] A follow-up lifting mechanism is mounted on the fixed plate 8 and connected to the swaying component. The follow-up lifting mechanism can adjust the height of the scraper 21 through the swaying component and control the scraper 21 to perform swaying action when the scraper 21 moves horizontally.

[0049] The support 1 is also equipped with a conveying component and a pumping component.

[0050] Specifically, the preparation of the release layer for recycled plastic electroplated aluminum hot stamping foil is a crucial process. Its purpose is to form a thin film on the carrier of the hot stamping foil (usually polyester film, etc.) that reduces the adhesion between other layers and the carrier. Therefore, when the material to be coated is placed in the conveying assembly, the conveying assembly guides the material to a position that mates with the coating head 7. Under the action of the pumping assembly, the coating liquid is evenly sprayed onto the material surface through the coating head 7. Simultaneously, under the action of the bidirectional translation mechanism, the oscillating assembly controls the two scrapers 21 to move along both sides of the material. The scraper moves toward the center of the material and, during the movement, smooths out the thickened area at the edge. The bidirectional translation mechanism also drives the follow-up lifting mechanism to gradually raise the scraper 21 to a certain height and control the two scrapers 21 to swing toward each other to push the coating liquid toward the center of the material. When the scraper 21 rises to its maximum height, the scraper 21 separates from the coating area on the material surface and moves toward the initial position until the scraper 21 returns to the initial position. The above steps are repeated to continuously smooth out the thickened coating area on the side of the material.

[0051] Preferably, since the coating liquid itself has a certain fluidity, during the coating process, the local coating area is prone to edge bulging due to the Marangoni effect (surface tension gradient), forming a "coffee ring" defect at the microscale. In addition, due to the uneven distribution of shear rate during the coating process, the edge thickening problem can also be caused. Therefore, by scraping the side of the scraper 21 and controlling the coating liquid in the thickened area to move towards the center area, and by the coating liquid's own coating effect during subsequent material movement, the influence of the edge thickening area can be eliminated, and the coating liquid can be uniformly coated on the material surface.

[0052] Please see Figures 1-3 The conveying assembly includes conveying rollers rotatably mounted on the bracket 1 and arranged symmetrically. A conveyor belt 3 is sleeved on the conveying rollers. A first motor 2 is fixed on the bracket 1. The output shaft of the first motor 2 is connected to one of the conveying rollers. The pumping assembly includes a storage box 5 fixed on the protective frame 4. The bottom of the storage box 5 is connected to a conveying pipe 6 that is connected to the coating head 7.

[0053] Furthermore, the support 1 is also equipped with a traction roller for moving the material. With the cooperation of the conveyor belt 3, the material can be guided to move smoothly along the travel direction of the conveyor belt 3 to ensure the stability of the coating. When coating is required, the first motor 2 works and drives the conveyor belt 3 to move through the conveyor roller, thereby cooperating with the traction roller to control the smooth movement of the material. When the material moves to the position that matches the coating head 7, the coating liquid in the storage tank 5 can be pumped into the coating head 7 through the conveying pipe 6 by pumping. The coating liquid is then evenly sprayed onto the surface of the material through the coating head 7. Due to its own flow extension effect, the coating liquid on the surface of the material can be evenly distributed in the required coating area.

[0054] Please see Figure 1 , Figure 2 , Figure 4 , Figure 6 The bidirectional translation mechanism includes a second motor 9 fixed on the fixed plate 8. A bidirectional lead screw 10 connected to the output shaft of the second motor 9 is rotatably mounted on the fixed plate 8. Threaded sleeves 11 arranged symmetrically are threadedly connected to the bidirectional lead screw 10. A guide assembly connected to the threaded sleeves 11 is provided on the fixed plate 8. The guide assembly includes a guide post 12 fixed on the fixed plate 8. Guide sleeves 13 arranged symmetrically are slidably mounted on the guide post 12. A connecting plate 14 fixedly connected to the threaded sleeves 11 is fixed to the side wall of the guide sleeves 13.

[0055] In detail, before coating begins, the bidirectional lead screw 10 controls the two threaded sleeves 11 to be at the end of their strokes in opposite directions, so that the distance between the two scrapers 21 is maximized by the yaw assembly, and this distance is slightly larger than the coating area. At this time, the distance between the scraper 21 and the material in the vertical direction is equivalent to the coating thickness. When the material needs to be coated, as the coating liquid is sprayed onto the material surface, it will gradually extend to the entire coating area due to the self-flowing effect of the coating liquid. However, when the coating liquid extends to the edge area, due to the Marangoni effect (surface tension gradient), it is easy to cause the edge to bulge, which in turn leads to the problem of uneven coating area. Therefore, it is necessary to scrape the area smooth.

[0056] Under the action of the second motor 9, the bidirectional lead screw 10 is controlled to rotate, thereby driving the two threaded sleeves 11 to move. The threaded sleeves 11 will control the guide sleeves 13 to move along the length direction of the guide post 12 through the connecting plate 14. Since the guide post 12 and the guide sleeves 13 have a guiding function, it can be ensured that the threaded sleeves 11 move along the length direction of the bidirectional lead screw 10 and will not rotate with the bidirectional lead screw 10. Therefore, under the action of the two threaded sleeves 11, the two scrapers 21 can be controlled to move from the coating edge area to the coating center area through the yaw component to scrape the thickened part of the coating edge. When the distance between the two scrapers 21 reaches the minimum, the second motor 9 controls the bidirectional lead screw 10 to reverse, so as to control the two scrapers 21 to move towards the initial position. The above steps are repeated to achieve continuous processing of the thickened coating area and ensure more uniform coating.

[0057] Please see Figure 1 , Figure 2 , Figures 4-11 The oscillation assembly includes a follower rod 15 fixed to the side wall of the threaded sleeve 11 and symmetrically arranged. The outer circumferential wall of the follower rod 15 has a spiral groove 1501 and a vertical groove 1502. A sliding sleeve 19, fixedly connected to the scraper 21, is slidably mounted on the follower rod 15. A limiting block 20, which slidably engages with the spiral groove 1501 and the vertical groove 1502, is fixed to the inner wall of the sliding sleeve 19. The follower lifting mechanism includes a sliding block 17 that slides axially along the follower rod 15 and abuts against the sliding sleeve 19. A guide sleeve 13 is fixed with a sliding block 17. The 7-slidably connected support column 16, the side wall of the sliding block 17 is fixed with a limiting column 18; it also includes a guide assembly disposed on the fixed plate 8 for guiding the limiting column 18 to move in the vertical direction, the guide assembly includes a support plate 22 fixed on the fixed plate 8, the support plate 22 has symmetrically arranged guide grooves that slide and fit with the limiting column 18, the guide assembly also includes a guide rod 23 rotatably mounted on the support plate 22 and symmetrically arranged, the support plate 22 is fixed with a first fixing block 24 and a second fixing block 25 that abut against the guide rod 23.

[0058] It should be noted that the guide groove can be divided into four sections: the first horizontal groove 2201, the inclined groove 2202, the second horizontal groove 2203, and the straight groove 2204. The two ends of the straight groove 2204 are respectively connected to one end of the first horizontal groove 2201 and the second horizontal groove 2203. One end of the inclined groove 2202 is connected to the other end of the first horizontal groove 2201, and the other end is connected to the second horizontal groove 2203. The guide rod 23 is in a free swinging state. When the guide rod 23 abuts against the first fixed block 24, the guide rod 23 and the second horizontal groove 2203 are in a parallel state, and the side of the guide rod 23 and the side of the second horizontal groove 2203 are on the same reference plane. When the guide rod 23 abuts against the second fixed block 25, the guide rod 23 and the inclined groove 2202 are in a parallel state, and the side of the guide rod 23 and the side of the inclined groove 2202 are on the same reference plane.

[0059] Please see Figure 9 , Figure 10 When no coating is applied, under the action of gravity, the guide rod 23 and the first fixed block 24 are in abutting state, so that the inclined groove 2202 is in a blocked state. At this time, the limiting post 18 is located at the connection position of the first horizontal groove 2201 and the straight groove 2204, so that the sliding block 17 is located at the end of the stroke away from the threaded sleeve 11, so that the scraper 21 is controlled to be located at the end of the stroke towards the conveyor belt 3 by the sliding sleeve 19. Under the action of the sliding sleeve 19, the limiting block 20 is controlled to be located at the end of the stroke of the spiral groove 1501 away from the vertical groove 1502, so that the scraper 21 is in a parallel state with the conveyor belt 3. At this time, the distance between the two scrapers 21 is just slightly larger than the material coating area, and the distance between the scraper 21 and the material in the vertical direction is equivalent to the coating thickness.

[0060] When the coating liquid is sprayed onto the material surface in the area to be coated, the closer the distance to the coating head 7, the higher the temperature of the coating liquid, the faster its flow rate, and the smaller the flow area. The larger the distance to the coating head 7, the cooler the temperature of the coating liquid, the slower its flow rate, and the larger the flow area. Therefore, as the flow continues and the distance to the coating head 7 increases, the thickness of the coating edge area increases under the influence of the Marangoni effect (surface tension gradient).

[0061] When it is necessary to treat the thickened area at the coating edge, the two follower rods 15 are controlled to move towards each other under the action of the bidirectional translation mechanism, and the scraper 21 is driven to move through the sliding sleeve 19. The follower rods 15 also drive the sliding block 17 to move, so as to control the limiting post 18 to slide along the length direction of the first transverse groove 2201. Under the action of the support post 16, it can be ensured that the sliding block 17 will not deviate during movement, so as to ensure that the limiting post 18 always slides in the guide groove. Under the action of the limiting post 18 and the first transverse groove 2201, it can also be ensured that the position of the sliding block 17 on the follower rod 15 will not change, so as to ensure that the height of the scraper 21 will not change.

[0062] When the scraper 21 moves to contact the coating area, the scraper 21 can smooth the coating liquid in the thickened area at the edge and push the excess coating liquid in the thickened area toward the center of the material. As the scraper 21 moves gradually, the amount of excess coating liquid accumulated on the side of the scraper 21 that is close to each other gradually increases. When the limiting post 18 disengages from the first transverse groove 2201 and enters the inclined groove 2202, the limiting post 18 will drive the sliding block 17 to slide along the axial direction of the follower rod 15 and move toward the threaded sleeve 11. Under the action of the sliding block 17, the sliding sleeve 19 moves synchronously, thereby controlling the distance between the scraper 21 and the material to gradually increase, so that the accumulated coating liquid is gradually spread on the coating area.

[0063] Please see Figure 11 The sliding sleeve 19 also drives the limiting block 20 to slide along the trajectory of the spiral groove 1501. Under the action of the limiting block 20 and the spiral groove 1501, the sliding sleeve 19 rotates at a certain angle, causing the scraper 21 to deflect at a certain angle. Under the action of the scraper 21, while controlling the spreading of the coating liquid, it guides excess coating liquid to gradually converge towards the coating center area. When the limiting block 20 moves to the connection position between the spiral groove 1501 and the vertical groove 1502, the deflection angle of the scraper 21 reaches its maximum. At this time, the limiting block 20 will enter the vertical groove 1502, and the deflection angle of the scraper 21 will not... Then, when the limiting post 18 abuts against one side of the guide rod 23, the guide rod 23 will separate from the first fixing block 24 and swing towards the second fixing block 25 until the limiting post 18 disengages from the inclined groove 2202 and enters the second transverse groove 2203. At this time, the lifting height of the scraper 21 reaches its maximum and it is completely separated from the coating liquid. Under the action of gravity, the guide rod 23 returns to the position of abutting against the first fixing block 24. When the limiting post 18 moves to the end of the stroke of the second transverse groove 2203 away from the straight groove 2204, the distance between the two scrapers 21 reaches its minimum value.

[0064] At this time, under the action of the bidirectional translation mechanism, the two follower rods 15 are controlled to move toward the initial position, so that the limiting post 18 slides in the second transverse groove 2203. When the limiting post 18 abuts against the other side of the guide rod 23, since the guide rod 23 abuts against the first fixing block 24, it can ensure that the inclined groove 2202 is in a blocked state. The limiting post 18 always slides along the second transverse groove 2203. When the limiting post 18 moves to the position where the second transverse groove 2203 and the straight groove 2204 are connected, the two scrapers 21 are between When the spacing reaches its maximum, under the action of gravity, the limiting post 18 returns to the connection position between the straight groove 2204 and the first horizontal groove 2201 through the straight groove 2204, so that the vertical spacing between the scraper 21 and the material is once again in a state equivalent to the coating thickness. The sliding block 17 and the sliding sleeve 19 also reset. Under the action of the limiting block 20 and the spiral groove 1501, the scraper 21 is in a state parallel to the conveyor belt 3. The above steps are repeated to achieve the scraping treatment of the edge thickened coating area.

[0065] Preferably, by controlling the scrapers 21 to move closer to each other, the coating area with thickened edges can be smoothed out, and the coating liquid in the thickened area will be gradually pushed towards the coating center area. During the pushing process, as the distance between the scraper 21 and the coating area gradually increases, the coating liquid can be evenly spread in the area close to the coating center, and then evenly dispersed to the entire coating area through the subsequent flow of the coating liquid.

[0066] Since the coating liquid has poorer flowability further away from the coating head 7, by controlling the scraper 21 to swing at a certain angle, the coating liquid in the area with thickened edges and poor flowability can be gathered towards the coating center area and the area close to the coating head 7. By mixing with the coating liquid in this area, the flowability of the coating liquid is neutralized. This can effectively prevent the coating liquid from flowing back to the edge and thickening again, and also ensure that it always has a certain flowability, preventing the coating liquid from accumulating in the coating center area and gradually flowing to the entire coating area.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A partial flow coating device for plastic recycling electrochemical aluminum stamping foil release layer, comprising: a support, and a protective frame and a fixed plate fixed on the support, a coating head is fixed in the protective frame; characterized in that it further comprises: a bidirectional translation mechanism arranged on the fixed plate, a deflection assembly is arranged on the bidirectional translation mechanism, the deflection assembly comprises symmetrically arranged scrapers, the bidirectional translation mechanism can drive the two scrapers to move towards each other or away from each other through the deflection assembly; a follow-up lifting mechanism arranged on the fixed plate and connected with the deflection assembly, the follow-up lifting mechanism can adjust the height of the scraper through the deflection assembly when the scraper translates, and control the scraper to perform a deflection action; the bidirectional translation mechanism comprises a second motor fixed on the fixed plate, a bidirectional screw rod connected with the output shaft of the second motor is rotatably arranged on the fixed plate, symmetrically arranged threaded sleeves are threadedly connected on the bidirectional screw rod, and a guide assembly connected with the threaded sleeves is arranged on the fixed plate; the guide assembly comprises a guide column fixed on the fixed plate, symmetrically arranged guide sleeves are slidably arranged on the guide column, and connecting plates fixedly connected with the threaded sleeves are fixed on the side walls of the guide sleeves; the deflection assembly comprises symmetrically arranged follow-up rods fixed on the side walls of the threaded sleeves, helical grooves and vertical grooves are formed on the circumferential outer walls of the follow-up rods, sliding sleeves fixedly connected with the scrapers are slidably arranged on the follow-up rods, and limiting blocks slidably fitted in the helical grooves and the vertical grooves are fixed on the inner walls of the sliding sleeves; the follow-up lifting mechanism comprises a sliding block axially sliding along the follow-up rod and abuttingly matched with the sliding sleeve, a support column slidably connected with the sliding block is fixed on the guide sleeve, and a limiting column is fixed on the side wall of the sliding block; a guide assembly for guiding the limiting column to move in the vertical direction is further arranged on the fixed plate; the guide assembly comprises a support plate fixed on the fixed plate, and symmetrically arranged guide grooves slidably fitted with the limiting columns are formed on the support plate.

2. A partial flood coater for plastic regrind electrochemical aluminum stamp foil release layers as defined in claim 1, wherein, the guide assembly further comprises symmetrically arranged guide rods rotatably arranged on the support plate, and a first fixed block and a second fixed block abuttingly matched with the guide rods are fixed on the support plate.

3. A partial flood coater for plastic regrind electrochemical aluminum foil stamping die release layer as claimed in claim 1, wherein, a conveying assembly and a pumping assembly are further arranged on the support, wherein the conveying assembly comprises symmetrically arranged conveying rollers rotatably arranged on the support, a conveying belt is sleeved on the conveying rollers, a first motor is fixed on the support, and the output shaft of the first motor is connected with one of the conveying rollers.

4. A partial flood coater for plastic regrind electrochemical aluminum stamp foil release layers as defined in claim 3, wherein, the pumping assembly comprises a storage tank fixed on the protective frame, and a conveying pipe connected with the coating head is arranged at the bottom of the storage tank.

5. A partial flow coating method of a release layer of a plastic recycled electro-deposition aluminum stamping foil, using the partial flow coating apparatus of a release layer of a plastic recycled electro-deposition aluminum stamping foil according to any one of claims 1 to 4, characterized in that, comprising the following steps: step one: placing the material to be coated on the conveying assembly, and moving the material to the coating head direction through the conveying assembly; step two: when the material moves to the position matched with the coating head, the coating liquid is sprayed on the surface of the material through the coating head under the action of the pumping assembly. Step three: under the action of the bidirectional translation mechanism, the two scrapers are controlled to move along the side of the material towards the center area by the deflection assembly, so as to perform the scraping action on the coating layer with the thickened edge; Step four: under the action of the follow-up lifting mechanism, the scraper is controlled to gradually lift a certain height and deflect a certain angle by the deflection assembly, so as to push the coating material in the thickened area towards the center area of the material.

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