Coating machine
By introducing a conveying pump into the coating machine to generate pressure to flow the material and using a movable block to seal the extrusion port, the problem of material solidification when coating stops in a slot coater is solved, thus achieving continuous and reliable coating and improving coating quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-20
AI Technical Summary
When existing slot coaters stop coating, easily solidified materials may solidify inside the coating head, causing blockages. Furthermore, they lack effective sealing mechanisms to prevent air from entering, which affects coating quality.
A coating machine was designed, comprising a coating box, guide rollers, coating nozzles, and a movable block. The material is propelled through the coating box by a conveying pump, and the movable block seals the extrusion port when coating stops to prevent material solidification. A dust removal roller and a drying assembly are also provided for dust removal and heating treatment.
It effectively prevents the material from solidifying when coating stops, maintains the continuity of coating, avoids coating head clogging and air ingress, and improves the reliability and efficiency of coating.
Smart Images
Figure CN224010298U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to coating equipment technical field especially relates to coating machine. BACKGROUND
[0002] Coating machine is a kind of equipment for carrying out coating process on the surface of film, paper and other materials, mainly for placing the substrate (such as paper, cloth, leather, aluminum foil, plastic film, etc.) in roll on coating machine, and the glue, paint or ink with specific function is evenly coated on the surface of substrate by coating head.
[0003] The common coating methods of coating machine include doctor blade type, roller type and slit type, and the former two coating methods need to expose material to air, so they are not suitable for dry coating materials, therefore, the slit type is the most used method, especially in the electrode coating of battery production, the slit type coating is to extrude material from a small gap to prevent material from being exposed to air for a long time.
[0004] The existing slit type coating needs to stop the material conveying system when stopping coating, for some materials that are extremely easy to solidify, the material stops flowing after stopping coating, which may solidify in the coating head, causing the coating head to be blocked, and the existing slit type coating head does not have a sealing mechanism, so air may still enter the inside of the coating head from the gap, causing the material to solidify. SUMMARY
[0005] In order to overcome the problem that most slit type coatings need to stop the material conveying system when stopping coating, for some materials that are extremely easy to solidify, the material stops flowing after stopping coating, which may solidify in the coating head, causing the coating head to be blocked, and the existing slit type coating head does not have a sealing mechanism, so air may still enter the inside of the coating head from the gap, causing the material to solidify.
[0006] The technical scheme of the utility model is as follows: a coating machine comprises a shell, a coating box and a drying assembly, the bottom of the shell is provided with the coating box for coating, the upper part of the coating box is provided with a guide roller for guiding the film, the guide roller is rotatably connected with the shell, the upper part of the coating box is provided with a coating nozzle, an extrusion opening is formed in the upper part of the coating nozzle, a movable block is arranged on the inner side of the coating box, a first neck is arranged at the bottom of one side of the coating box, second necks are arranged at both sides of one end of the coating box, a material barrel is arranged on one side of the shell, a conveying pump is arranged on one side of the material barrel, and a drying assembly is arranged on the upper part of the shell.
[0007] Preferably, the end of the coating box provided with the second neck and the first neck is provided with a material return pipe, and the other end of the coating box is provided with a material inlet pipe.
[0008] As preferred, a dust removal roller is arranged in the feeding direction of the guide roller, the dust removal roller is in contact with the bottom surface of the film to be coated, and the surface of the dust removal roller is coated with glue for sticking dust.
[0009] As preferred, the drying assembly comprises a blowing drying box, a heating box and a fan, the blowing drying box is arranged above the shell, the heating box is arranged on one side of the shell, and the fan is arranged on one side of the heating box.
[0010] As preferred, the inner side of the blowing drying box is provided with a communication chamber, the bottom of the blowing drying box is provided with a blowing port, a connecting pipe is arranged between the blowing drying box and the heating box, the inner side of the heating box is provided with a wind guide partition plate, the wind guide partition plates are staggered, and the inner side of the heating box is provided with an electric heating rod.
[0011] As preferred, the bottom of the coating box is provided with a fixed plate, the fixed plate is fixedly connected with the shell, the bottom of the fixed plate is provided with an electric push rod, the movable end of the electric push rod is provided with a movable plate, the bottoms of the two ends of the movable plate are provided with guide rods, and the guide rods are slidably connected with the fixed plate.
[0012] As preferred, the bottom of the movable block is provided with a connecting rod, the connecting rod is slidably and sealingly connected with the coating box, the connecting rod is fixedly connected with the fixed plate, and the movable block can be completely attached to the inner side surface of the coating nozzle.
[0013] The utility model discloses beneficial effects:
[0014] By setting the conveying pump machine, the material barrel is sent into the coating box, and flows out from the other end of the coating box and returns into the material barrel, the first and second constrictions are arranged, the cross section area of one end of the coating box is less than that of the other end, pressure is generated when the material flows in the coating box, the pressure promotes part of the material to flow to the coating nozzle when flowing, and the material is coated by leaving the extrusion port of the coating box, when coating stops, the movable block moves upward and closes the extrusion port, and the material still keeps flowing in the coating box, so that the material is prevented from stopping flowing and solidifying. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 The utility model discloses a three -dimensional structure schematic diagram of the utility model shows as the three -dimensional structure schematic diagram of the guide roller;
[0016] Figure 2 The utility model discloses a three -dimensional structure schematic diagram of the utility model shows as the three -dimensional structure schematic diagram of the guide roller;
[0017] Figure 3 The utility model discloses a three -dimensional structure schematic diagram of the utility model shows as the three -dimensional structure schematic diagram of the guide roller;
[0018] Figure 4 The utility model discloses a three -dimensional structure schematic diagram of the utility model shows as the three -dimensional structure schematic diagram of the guide roller
[0019] Figure 5The utility model discloses a movable block three -dimensional structure schematic diagram.
[0020] Mark explanation: 1, shell, 2, coating box, 3, guide roller, 4, electric push rod, 5, material bucket, 6, conveying pump machine, 7, blow drying box, 8, heating box, 9, fan, 201, feed pipe, 202, back material pipe, 203, first shrinkage, 204, second shrinkage, 205, extrusion port, 206, movable block, 207, coating nozzle, 208, connecting rod, 301, dust removal roller, 401, movable plate, 402, guide rod, 403, fixed plate, 701, blow opening, 702, communicating chamber, 703, connecting pipe, 801, air guide baffle, 802, electric heating rod. DETAILED DESCRIPTION
[0021] The utility model is further explained below in connection with the drawings and examples.
[0022] Please refer to Figures 1-5 The utility model provides a kind of example: coating machine, including shell 1, coating box 2 and drying assembly, the bottom of shell 1 is provided with the coating box 2 for coating, the top of coating box 2 is provided with the guide roller 3 for guiding film, guide roller 3 is rotatably connected with shell 1, the top of coating box 2 is provided with coating nozzle 207, extrusion port 205 is opened in coating nozzle 207 top, the inside of coating box 2 is provided with movable movable block 206, the bottom of one side of coating box 2 is provided with first shrinkage 203, the both sides of one end of coating box 2 are provided with second shrinkage 204, the side of shell 1 is provided with material bucket 5, the side of material bucket 5 is provided with conveying pump machine 6, the top of shell 1 is provided with drying assembly;Material bucket 5 is sent into coating box 2 by setting conveying pump machine 6, and from the other end of coating box 2 and back flow into material bucket 5, the setting of first shrinkage 203 and second shrinkage 204 makes the cross-sectional area of one end of coating box 2 less than the cross-sectional area of the other end, so that material produces pressure when flowing in coating box 2, this pressure promotes part of material to flow to coating nozzle 207 when flowing, and coating nozzle 207 is coated from extrusion port 205 and exits coating box 2, when coating stops, movable block 206 moves upwards and closes extrusion port 205, previous material still keeps flowing in coating box 2, prevent material from solidifying and stop flowing easily.
[0023] Please refer to Figure 2In the embodiment, the coating box 2 is provided with a second necking 204 and one end of a first necking 203 is provided with a return pipe 202, the other end of the coating box 2 is provided with a feeding pipe 201, the dust removal roller 301 is arranged in the feeding direction of the guide roller 3, the dust removal roller 301 is in contact with the bottom surface of the film to be coated, and the surface of the dust removal roller 301 is coated with glue for sticking dust; the feeding pipe 201 and the return pipe 202 connect the coating box 2, the material barrel 5 and the conveying pump 6 to communicate with each other, and in the coating process, the dust removal roller 301 rotates with the film and sticks away the dust on the surface of the film to perform dust removal by using the glue.
[0024] Please refer to Figure 3 In the embodiment, the drying assembly comprises a blowing drying box 7, a heating box 8 and a fan 9, the blowing drying box 7 is arranged above the shell 1, the heating box 8 is arranged on one side of the shell 1, the fan 9 is arranged on one side of the heating box 8, the inner side of the blowing drying box 7 is provided with a communication chamber 702, the bottom of the blowing drying box 7 is provided with a blowing port 701, the connection pipe 703 is arranged between the blowing drying box 7 and the heating box 8, the inner side of the heating box 8 is provided with wind guide partitions 801, the wind guide partitions 801 are staggered, and the inner side of the heating box 8 is provided with an electric heating rod 802; the fan 9 blows air into the heating box 8, the wind guide partitions 801 guide the air, the air advances in a meandering manner in the inner side of the heating box 8 to prolong the air travel path, and the electric heating rod 802 can fully heat the air, and the heated air enters the communication chamber 702 from the connection pipe 703 and is blown to the coated film from the blowing port 701 to dry the film.
[0025] Please refer to Figures 4-5 In the embodiment, the bottom of the coating box 2 is provided with a fixed plate 403, the fixed plate 403 is fixedly connected with the shell 1, the bottom of the fixed plate 403 is provided with an electric push rod 4, the movable end of the electric push rod 4 is provided with a movable plate 401, the bottom of both ends of the movable plate 401 is provided with a guide rod 402, the guide rod 402 is slidably connected with the fixed plate 403, the bottom of the movable block 206 is provided with a connecting rod 208, the connecting rod 208 is slidably and sealingly connected with the coating box 2, the connecting rod 208 is fixedly connected with the fixed plate 403, and the inner side surface of the movable block 206 and the coating nozzle 207 can be completely attached; when the position of the movable block 206 is adjusted, the electric push rod 4 drives the movable plate 401 to move up and down, the guide rod 402 guides the movement of the movable plate 401, and the connecting rod 208 receives power to drive the movable block 206 to move up and down, the coating discharge speed can be adjusted by adjusting the position of the movable block 206, and when the movable block 206 is completely attached to the inner surface of the coating nozzle 207, the extrusion opening 205 is completely closed.
[0026] When coating, the winding device provides power to drive the film movement, the conveying pump 6 sends the material barrel 5 into the coating box 2, and flows out from the other end of the coating box 2 and flows back into the material barrel 5, the first and second constrictions 203 and 204 are arranged to make the cross-sectional area of one end of the coating box 2 smaller than that of the other end, so that the material generates pressure when flowing in the coating box 2, this pressure promotes part of the material to flow to the coating nozzle 207 when flowing, and exits the coating box 2 from the extrusion port 205 to coat, the coating discharge speed can be adjusted by adjusting the position of the movable block 206, when the movable block 206 is completely attached to the inner surface of the coating nozzle 207, the extrusion port 205 is completely closed, and the material still flows in the coating box 2, preventing the material from stopping flowing and solidifying.
[0027] Through the above steps, by setting the conveying pump 6 to send the material barrel 5 into the coating box 2, and flow out from the other end of the coating box 2 and flow back into the material barrel 5, the first and second constrictions 203 and 204 are arranged to make the cross-sectional area of one end of the coating box 2 smaller than that of the other end, so that the material generates pressure when flowing in the coating box 2, this pressure promotes part of the material to flow to the coating nozzle 207 when flowing, and exits the coating box 2 from the extrusion port 205 to coat, when coating stops, the movable block 206 moves upward and closes the extrusion port 205, and the material still flows in the coating box 2, preventing the material from stopping flowing and solidifying.
Claims
1. A coating machine, comprising a housing (1); characterized in that: It also includes a coating box (2) and a drying assembly. The bottom of the outer shell (1) is provided with a coating box (2) for coating. The top of the coating box (2) is provided with a guide roller (3) for guiding the film. The guide roller (3) is rotatably connected to the outer shell (1). The top of the coating box (2) is provided with a coating nozzle (207). The top of the coating nozzle (207) is provided with an extrusion port (205). The inside of the coating box (2) is provided with a movable block (206). The bottom of one side of the coating box (2) is provided with a first constriction (203). The two sides of one end of the coating box (2) are provided with a second constriction (204). The side of the outer shell (1) is provided with a material bucket (5). The side of the material bucket (5) is provided with a conveying pump (6). The top of the outer shell (1) is provided with a drying assembly.
2. The coating machine according to claim 1, characterized in that: The coating box (2) is provided with a return pipe (202) at one end of the second narrowing (204) and the first narrowing (203), and a feed pipe (201) at the other end of the coating box (2).
3. The coating machine according to claim 1, characterized in that: The guide roller (3) is provided with a dust removal roller (301) in the feeding direction. The dust removal roller (301) contacts the bottom surface of the film to be coated. The surface of the dust removal roller (301) is coated with adhesive for removing dust.
4. The coating machine according to claim 1, characterized in that: The drying assembly includes a blower drying box (7), a heating box (8) and a fan (9). The blower drying box (7) is located on the top of the outer shell (1), the heating box (8) is located on one side of the outer shell (1), and the fan (9) is located on one side of the heating box (8).
5. The coating machine according to claim 4, characterized in that: The air drying oven (7) has a connecting chamber (702) on its inner side, an air outlet (701) at the bottom of the air drying oven (7), a connecting pipe (703) between the air drying oven (7) and the heating box (8), an air guide baffle (801) on the inner side of the heating box (8), the air guide baffles (801) are arranged in an alternating pattern, and an electric heating rod (802) is provided on the inner side of the heating box (8).
6. The coating machine according to claim 1, characterized in that: A fixing plate (403) is provided at the bottom of the coating box (2). The fixing plate (403) is fixedly connected to the outer shell (1). An electric push rod (4) is provided at the bottom of the fixing plate (403). A movable plate (401) is provided at the movable end of the electric push rod (4). Guide rods (402) are provided at the bottom of both ends of the movable plate (401). The guide rods (402) are slidably connected to the fixing plate (403).
7. The coating machine according to claim 6, characterized in that: The bottom of the movable block (206) is provided with a connecting rod (208), which is slidably and sealed to the coating box (2). The connecting rod (208) is fixedly connected to the fixing plate (403), and the inner surface of the movable block (206) and the coating nozzle (207) can be completely fitted together.