Coating machine and using method thereof

Abstract

The invention discloses a coating machine and a using method thereof, and belongs to the technical field of coating machines, the coating machine comprises a machine base, a bottom roller and a scraper are installed on the machine base, a trough is installed at the position, located on one side of the bottom roller, of the machine base, and the trough comprises a bottom plate and two side plates arranged on the bottom plate; the two side plates are symmetrically arranged relative to the vertical plane where the center axis of the side face of the bottom roller is located, a driving mechanism for driving the two side plates to move oppositely is arranged on the bottom plate, each side plate comprises a material blocking plate and a positioning piece which are connected, and the driving mechanism drives the side plates to move till the positioning pieces make contact with the side face of the base material and stop moving; according to the coating machine provided by the embodiment of the invention, the two side plates are symmetrically arranged relative to the vertical plane where the center axis of the side face of the bottom roller is located, and the driving mechanism is arranged to drive the two side plates to move oppositely, so that the distance between the two side plates can be accurately controlled, and it is ensured that the blank widths of the two sides of a base material are equal.

Description

Technical Field

[0001] The present invention relates to the technical field of coating machines, and specifically discloses a coating machine and a method for using the same. Background Art

[0002] Coating machines are mainly used in the surface coating process production of films, papers, etc. They can coat a roll of base material with a layer of glue, coating, ink, etc. with specific functions. Coating machines are divided into brush type, air knife type, doctor blade type, roller type, spray type, curtain coating and slot coating. The doctor blade type coating machine is suitable for base materials of various materials, including paper, plastic, metal, glass, etc. In addition, the doctor blade type coating machine also has the advantages of simple operation, being able to adapt to high-viscosity coatings, high coating uniformity, and convenient maintenance and cleaning; the main body structure of the doctor blade type coating machine includes a doctor blade, a bottom roller and a material tank. Two sets of baffle plates need to be arranged in the material tank to limit the distribution width of the coating. Due to the disadvantage that the doctor blade type coating machine cannot fully coat, the distance between the two baffle plates needs to be less than the width of the base material, and when the two baffle plates are placed, it is necessary to ensure that they can be symmetrically arranged with respect to the vertical plane where the axis of symmetry of the base material is located, so that the blank widths (the widths without coating the coating) on both sides of the base material are equal, leaving enough margin for the offset during the transportation of the base material. Even when the position of the base material deviates axially along the bottom roller during the transportation of the base material, it will not affect the normal progress of the coating work (the coating will not be applied to the edge position of the base material).

[0003] For example, the patent with the publication number CN218360423U, the publication date is January 24, 2023. It discloses a doctor blade coating machine, which includes a frame. On the frame, there is a driving roller for driving the protective film to move and a rotating motor for driving the driving roller to rotate. On the frame, there is a glue guiding plate. On the frame, there is a doctor blade for coating glue on the upper surface of the protective film. The doctor blade is provided with a comma-shaped cutting edge, and the arc surface of the comma-shaped cutting edge is the glue coating surface. On the frame, there is a doctor blade moving device for driving the doctor blade to move to adjust the glue coating thickness on the upper surface of the protective film. On the frame, there is a doctor blade fine-tuning device for finely adjusting the doctor blade moving device to finely adjust the glue coating thickness on the upper surface of the protective film. On the frame, there is a jump knife device for driving the doctor blade moving device to jump when rotating to the doctor blade at the connection of two protective films. On the frame, there is a control host for respectively controlling the working of the rotating motor, the doctor blade moving device, the doctor blade fine-tuning device, and the jump knife device, realizing uniform and smooth coating of glue on the protective film.

[0004] The existing baffle plates are manually installed and the gap is adjusted before coating. During the placement process, the distance between the two baffle plates cannot be accurately adjusted to the coating width, and it is impossible to ensure that the blank widths on both sides of the base material are equal. Summary of the Invention

[0005] The purpose of the present invention is to provide a coating machine and a method for using the same that are convenient for quickly positioning the side plates.

[0006] To achieve the above object, the present invention provides the following technical solutions: A coating machine includes a machine base, on which a bottom roller and a scraper are installed. A material tank is installed on the machine base at a position on one side of the bottom roller. The material tank includes a bottom plate and two side plates provided thereon. The two side plates are symmetrically arranged with respect to the vertical plane where the central axis of the side surface of the bottom roller is located. A driving mechanism for driving the two side plates to move towards each other is provided on the bottom plate. Each of the two side plates includes a material blocking plate and a positioning member connected to each other. The driving mechanism drives the side plate to stop moving when the positioning member contacts the side surface of the substrate.

[0007] In the above coating machine, the positioning member is an arc-shaped plate installed on the material blocking plate.

[0008] In the above coating machine, the driving mechanism includes a lead screw rotatably installed on the bottom plate. Sliders are slidably installed on the bottom plate at positions corresponding to the material blocking plates. The material blocking plate is connected to the corresponding slider. Both sliders are sleeved on the lead screw. When the lead screw is driven to rotate, the two sliders move towards each other.

[0009] In the above coating machine, the material blocking plate is slidably installed on the corresponding slider, and a limiting member for restricting the position of the material blocking plate is provided on the slider.

[0010] In the above coating machine, the limiting member includes a limiting block and a first elastic member. The limiting block is slidably installed in the slider, and the limiting block has a limiting position on the slider that can limit the material blocking plate. The first elastic member maintains the limiting block in the limiting position.

[0011] In the above coating machine, an adjusting rod is slidably connected to the slider. The adjusting rod is fixedly connected to the limiting block and penetrates to the side of the slider corresponding to the other slider. When the limiting block is in the limiting position, the adjusting rod protrudes from the surface of the slider where it is located. When the adjusting rod moves into the slider where it is located, it drives the corresponding limiting block to release the limitation on the material blocking plate.

[0012] In the above coating machine, the arc-shaped plate is slidably installed on the material blocking plate. After the position of the material blocking plate is adjusted, the arc-shaped plate is driven away from the substrate.

[0013] In the above coating machine, a second elastic member and a locking member are provided on the material blocking plate. The locking member is used to lock the position of the arc-shaped plate on the material blocking plate. When the arc-shaped plate moves to contact the side surface of the substrate, the locking member releases the locking of the arc-shaped plate, and the second elastic member drives the arc-shaped plate to slide on the material blocking plate and away from the side surface of the substrate.

[0014] In the above coating machine, an adjusting seat is slidably installed on the machine base. The bottom plate is fixedly connected to the adjusting seat, and a driving member for driving the adjusting seat to move horizontally is provided on the machine base.

[0015] A method for using the above coating machine includes the following steps: Step 1: Pass the substrate around the bottom roller and tension it; Step 2: Adjust the distance between the squeegee and the substrate to the coating thickness; Step 3: Start the driving mechanism to drive the two side plates to move towards each other until the positioning members of the two side plates are in contact with the side surface of the substrate; Step 4: Add the coating material to the position between the two side plates on the bottom plate and start coating.

[0016] In the above technical solution, the coating machine provided by the present invention symmetrically arranges the two side plates with respect to the vertical plane where the central axis of the side surface of the bottom roller is located, and sets a driving mechanism to drive the two side plates to move towards each other, so that the distance between the two side plates can be accurately controlled, and the equal blank widths on both sides of the substrate are ensured. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the coating machine provided by the embodiment of the present invention; Figure 2 Cross-sectional view of the coating machine provided by the embodiment of the present invention; Figure 3 Top view of the coating machine provided by the embodiment of the present invention; Figure 4 Enlarged schematic diagram of the material tank provided by the embodiment of the present invention; Figure 5 Partial cross-sectional view of the arc plate and the mounting plate when the arc plate is just unlocked and has not moved yet provided by the embodiment of the present invention; Figure 6 Schematic diagram of the connection state between the baffle plate and the slider provided by the embodiment of the present invention; Figure 7 Partial cross-sectional view of the slider provided by the embodiment of the present invention; Figure 8 Provided by the embodiment of the present invention Figure 3 Enlarged schematic diagram at position A; Figure 9 Provided by the embodiment of the present invention Figure 4 Enlarged schematic diagram at position B; Figure 10 Provided by the embodiment of the present invention Figure 5 Enlarged schematic diagram at position C.

[0019] Description of the reference numerals: 1. Machine base; 11. Adjusting base; 12. Cylinder; 2. Bottom roller; 3. Scraper; 4. Material chute; 41. Bottom plate; 411. Support plate; 42. Side plates; 421. Baffle plate; 4211. Clamping block; 422. Arc plate; 4221. Guide rod; 4222. Fixed plate; 5. Driving mechanism; 51. Lead screw; 52. Slide block; 521. Card slot; 53. Motor; 6. Limiting member; 61. Limiting block; 62. First spring; 63. Adjusting rod; 7. Mounting plate; 71. Guide rod; 72. Second spring; 73. Fixed block; 74. Insertion hole; 8. Locking member; 81. Movable rod; 811. Wedge block; 812. Arc plate; 82. Insertion rod; 83. Third spring; 84. Fourth spring. Detailed implementation mode

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

[0022] As Figures 1 - 10 shown, a coating machine provided by an embodiment of the present invention includes a machine base 1, a bottom roller 2 and a scraper 3 are installed on the machine base 1, and a material chute 4 is installed on the machine base 1 at a position on one side of the bottom roller 2. The material chute 4 includes a bottom plate 41 and two side plates 42 arranged on the upper side. The two side plates 42 are symmetrically arranged with respect to the vertical plane where the central axis of the side surface of the bottom roller 2 is located. A driving mechanism 5 for driving the two side plates 42 to move towards each other is provided on the bottom plate 41. Each of the two side plates 42 includes a baffle plate 421 and a positioning member connected to each other. The driving mechanism 5 drives the side plate 42 to move until the positioning member contacts the side surface of the substrate and then stops.

[0023] Specifically, this coating machine is a scraper coating machine, and its main structure is the machine base 1, as Figure 1 and Figure 2As shown, the cross-section of the machine base 1 is U-shaped. The bottom roller 2 and the scraper 3 are both installed inside the machine base 1. Among them, the scraper 3 is installed above the bottom roller 2. Both ends of the scraper 3 are slidably connected to the machine base 1. The scraper 3 is driven to slide in the vertical direction to increase or decrease the gap between the scraper 3 and the bottom roller 2, so as to adapt to different thicknesses of the base material and leave enough space for the base material to pass through between the scraper 3 and the bottom roller 2. The material trough 4 is installed on one side of the bottom roller 2. Figure 2 In the view, the material trough 4 is installed on the right side of the bottom roller 2. During the conveying process of the base material, the base material first passes through the material trough 4 and then through the scraper 3. The material trough 4 includes a bottom plate 41 and two groups of side plates 42. Among them, the bottom plate 41 is arranged along the axial direction of the bottom roller 2, and the bottom plate 41 is inclined. Figure 2 In the left side of the bottom plate 41 is lower and the right side is higher, so that the coating can flow towards the side where the bottom roller 2 is located and adhere to the surface of the base material. The two side plates 42 are symmetrically arranged with respect to the vertical plane passing through the central axis of the side surface of the bottom roller 2 (in the height direction of the cylinder, the vertical plane passing through the middle circular cross-section of the cylinder height), so as to ensure that the blank widths on both sides of the base material are equal. The two side plates 42 both include a material baffle 421 and a positioning member connected to each other. Among them, the material baffles 421 of the two groups of side plates 42 are used to limit the distribution width of the coating on the bottom plate 41. As Figure 2 and Figure 4 shown, the side of the material baffle 421 corresponding to the bottom roller 2 is an arc. The inclination of the side of the material baffle 421 corresponding to the bottom plate 41 is the same as the inclination angle of the bottom plate 41, so as to ensure that the material baffle 421 can be in close contact with the bottom plate 41 to achieve the best material baffle effect, and the upper side of the material baffle 421 is horizontally arranged. The positioning member is installed on the side of the material baffle 421 close to the bottom roller 2. It can slide along the surface of the bottom roller 2 and contact the side surface of the base material. Preferably, the positioning member is an arc-shaped plate 422 installed on the material baffle 421. The inner diameter of the arc-shaped plate 422 is equal to the diameter of the bottom roller 2. In this way, the contact area between the positioning member and the side surface of the base material can be increased, so as to avoid excessive extrusion force on the side surface of the base material by the positioning member and cause damage to the base material. In this embodiment, the arc-shaped plate 422 is fixedly connected to the material baffle 421. A driving mechanism 5 is installed on the bottom plate 41. The driving mechanism 5 is used to drive the two side plates 42 to move towards each other. Optionally, the driving mechanism 5 is an electric push rod (not shown in the figure). There are two groups of electric push rods and they are arranged in one-to-one correspondence with the material baffles 421. The two electric push rods are both fixed to the inner side wall of the machine base 1, and the two electric push rods are both arranged parallel to the bottom roller 2. The output ends of the two electric push rods are respectively fixedly connected to the corresponding material baffles 421.

[0024] This coating machine further includes an unwinding mechanism, a tensioning mechanism, a drying mechanism and a winding mechanism. The unwinding mechanism, the tensioning mechanism, the drying mechanism and the winding mechanism are all prior arts and can be directly applied without further elaboration.

[0025] When the coater is in use, first, the substrate is bypassed around the bottom roller 2. First, the substrate passes between the bottom roller 2 and the material tank 4, and then passes between the bottom roller 2 and the scraper 3. The substrate is tensioned by the tensioning mechanism. Then, the two electric push rods extend and drive the corresponding side plates 42 to move horizontally towards the middle of the bottom plate 41. When the positioning member touches the side of the substrate, the electric push rod stops. Obviously, in order to enable the electric push rod to stop in time, pressure sensors are provided on each arc-shaped plate 422. When the arc-shaped plate 422 approaches the side of the substrate, when the pressure sensor contacts the substrate and feeds back data to the control system of the coater, the control system controls the electric push rod to stop.

[0026] The coater provided by the embodiment of the present invention symmetrically arranges the two side plates 42 with respect to the vertical plane where the central axis of the side surface of the bottom roller 2 is located, and sets a driving mechanism 5 to drive the two side plates 42 to move towards each other, so that the distance between the two side plates 42 can be accurately controlled, and the blank widths on both sides of the substrate are ensured to be equal.

[0027] Further, the driving mechanism 5 includes a lead screw 51 rotatably installed on the bottom plate 41. Sliders 52 are slidably installed on the bottom plate 41 at positions corresponding to the baffle plates 421. The baffle plates 421 are connected to the corresponding sliders 52. Both sliders 52 are sleeved on the lead screw 51. When the lead screw 51 is driven to rotate, the two sliders 52 move towards each other.

[0028] Specifically, as Figure 3 、 Figure 4 、 Figure 8 and Figure 9 shown, a lead screw 51 is rotatably installed on the bottom plate 41. Support plates 411 are fixedly connected to both ends of the bottom plate 41. Both ends of the lead screw 51 are respectively rotatably connected to the corresponding support plates 411. Optionally, a motor 53 is fixedly connected to a group of the support plates 411, and the output end of the motor 53 is connected to one end of the lead screw 51. The lead screw 51 is arranged parallel to the bottom roller 2, and the lead screw 51 is installed on the side of the bottom plate 41 away from the bottom roller 2 to prevent the surface of the lead screw 51 from sticking to the coating material. Sliders 52 are slidably installed on the bottom plate 41. The sliders 52 are arranged in one-to-one correspondence with the baffle plates 421. The baffle plates 421 are installed on the corresponding sliders 52. The threads on the lead screw 51 are symmetrically arranged with respect to the vertical plane where the central axis of the side surface of the bottom roller 2 is located, and the two groups of sliders 52 are respectively connected to the threads on both sides of the lead screw 51. In this way, when the lead screw 51 is driven to rotate, it can drive the two sliders 52 to move towards each other. When the motor 53 drives the lead screw 51 to rotate, it can drive the corresponding baffle plates 421 to move towards each other through the sliders 52. With such an arrangement, by driving the two sliders 52 to move synchronously by the lead screw 51 to make the two baffle plates 421 move towards each other, compared with the method of using an electric push rod to drive a group of baffle plates 421 alone, the driving accuracy is higher, and it can ensure that the two baffle plates 421 are always symmetrically arranged with respect to the vertical plane where the central axis of the side surface of the bottom roller 2 is located.

[0029] In another embodiment proposed by the present invention, the baffle 421 is slidably mounted on the corresponding slider 52, and a position limiting member 6 for restricting the position of the baffle 421 is provided on the slider 52.

[0030] Furthermore, the position limiting member 6 includes a position limiting block 61 and a first elastic member. The position limiting block 61 is slidably mounted within the slider 52, and the position limiting block 61 has a position limiting position on the slider 52 that can limit the baffle 421, and the first elastic member maintains the position limiting block 61 in the position limiting position.

[0031] Specifically, since the coating material used in the blade 3 type coater has a high viscosity, it is necessary to clean the material tank 4 in a timely manner after production. To facilitate the disassembly and cleaning of the baffle 421, in this embodiment, a clamping block 4211 is fixedly connected to the side of the baffle 421 away from the bottom roller 2, a clamping groove 521 for cooperating with the clamping block 4211 is provided on the slider 52, and a position limiting member 6 for restricting the position of the baffle 421 is further provided on the slider 52. Optionally, the position limiting member 6 includes a position limiting block 61, as Figure 6 and Figure 7 shown, the position limiting block 61 is slidably mounted on the slider 52, a guiding groove for guiding the position limiting block 61 is provided on the slider 52, the guiding groove is communicated with the clamping groove 521, and when the baffle 421 is installed in place (the baffle 421 contacts the bottom plate 41), the position limiting block 61 is located above the clamping block 4211. The first elastic member includes a first spring 62 provided in the guiding groove, and the first spring 62 is fixedly connected to the position limiting block 61. When the first spring 62 is in a natural state, the position limiting block 61 extends into the clamping groove 521, and at this time, the position limiting block 61 is in the position limiting position for restricting the baffle 421. Figure 6 Shown is that the position limiting block 61 blocks above the clamping block 4211, and at this time, the position limiting block 61 is in the position limiting position. In this position, the position limiting block 61 can prevent the clamping block 4211 from sliding upward and disengaging from the clamping groove 521; in specific implementation, the position limiting of the baffle 421 can also be achieved by providing a pin hole on the clamping block 4211 and setting the position limiting block 61 as a pin, and through the cooperation of the pin and the pin hole; in this embodiment, by slidably connecting the baffle 421 with the slider 52 and providing a position limiting member 6 on the slider 52 to limit the baffle 421, on the one hand, it ensures that the baffle 421 will not be displaced during the coating process and can always remain in contact with the bottom plate 41 to prevent material leakage, and on the other hand, the setting of the position limiting member 6 facilitates the quick disassembly and installation of the baffle 421, thereby facilitating the staff to disassemble the baffle 421 for cleaning; preferably, as Figure 7 shown, the position limiting block 61 is a right trapezoid, its inclined surface part extends into the clamping groove 521, and the inclined surface of the position limiting block 61 slopes upward. With such a setting, when installing the baffle 421, it is only necessary to insert the clamping block 4211 into the clamping groove 521 and press it downward along the direction of the clamping groove 521, and the operation is more simple and convenient.

[0032] Further, an adjusting rod 63 is slidably connected to the slider 52. The adjusting rod 63 is fixedly connected to the limiting block 61, and the adjusting rod 63 penetrates to one side of the slider 52 corresponding to the other slider 52. When the limiting block 61 is in the limiting position, the adjusting rod 63 protrudes from the surface of the slider 52 where it is located. When the adjusting rod 63 moves into the slider 52 where it is located, it drives the corresponding limiting block 61 to release the limitation on the material baffle 421.

[0033] Specifically, in the above embodiment, after the coating is completed, it is necessary to manually press the limiting block 61 into the guiding groove so that the limiting block 61 no longer blocks the clamping block 4211, and then the material baffle 421 can be removed. This process requires two hands to operate, that is, the two groups of material baffles 421 need to be removed in two times, and the operation efficiency is relatively low. In this embodiment, as Figure 6 shown, the adjusting rod 63 is inserted into the slider 52. The adjusting rod 63 can move relative to the slider 52. One end of the adjusting rod 63 is fixedly connected to the limiting block 61, and the other end of the adjusting rod 63 penetrates to the outside of the slider 52 where it is located, and the other end of the adjusting rod 63 faces the other group of sliders 52. When the limiting block 61 is in the limiting position, the adjusting rod 63 protrudes from the surface of the slider 52 where it is located.

[0034] After all the coating work is completed, the arc-shaped plate 422 is no longer blocked by the substrate (the substrate has been completely wound up). At this time, the motor 53 drives the lead screw 51 to continue to rotate, so that the two sliders 52 drive the material baffle 421 to continue to approach. During this process, the material baffle 421 can gather the residual paint on the bottom plate 41 for convenient paint recovery treatment. When the adjusting rods 63 on the two sliders 52 come into contact with each other, the two adjusting rods 63 block each other and contract into the sliders 52 where they are located. At this time, the adjusting rod 63 drives the corresponding limiting block 61 to slide, and the limiting block 61 squeezes the corresponding first spring 62 to deform. When the limiting block 61 no longer blocks the clamping block 4211, both material baffles 421 are in the unlocked state, and the staff can remove the two material baffles 421 at the same time.

[0035] In still another embodiment proposed by the present invention, the arc-shaped plate 422 is slidably mounted on the material baffle 421. After the position of the material baffle 421 is adjusted, the arc-shaped plate 422 is driven away from the substrate.

[0036] Further, a second elastic member and a locking member 8 are provided on the material baffle 421. The locking member 8 is used to lock the position of the arc-shaped plate 422 on the material baffle 421. When the arc-shaped plate 422 moves to contact the side surface of the substrate, the locking member 8 releases the locking of the arc-shaped plate 422, and the second elastic member drives the arc-shaped plate 422 to slide on the material baffle 421 and away from the side surface of the substrate.

[0037] Specifically, in the above embodiment, after the position of the baffle 421 is adjusted, the arc-shaped plate 422 remains in contact with the side of the substrate. During the transportation of the substrate, the side of the substrate is easily damaged due to friction. Different from the above embodiment, in this embodiment, the arc-shaped plate 422 can be displaced relative to the baffle 421. As Figure 5 shown, a mounting plate 7 is fixedly connected to the baffle 421. The mounting plate 7 is arc-shaped and fits the arc-shaped plate 422. A guide rod 4221 is fixedly connected to the arc-shaped plate 422. The guide rod 4221 penetrates the mounting plate 7. Preferably, the guide rod 4221 is a square rod to prevent the guide rod 4221 from rotating and causing the arc-shaped plate 422 to tilt. One end of the guide rod 4221 away from the arc-shaped plate 422 is connected to a fixing plate 4222, thus realizing the sliding connection between the arc-shaped plate 422 and the baffle 421. In addition, a second elastic member and a locking member 8 are provided on the mounting plate 7. The second elastic member includes a guide rod 71 and a second spring 72. One end of the guide rod 71 is fixedly connected to the fixing plate 4222. A fixing block 73 is fixedly connected to the mounting plate 7. The side of the guide rod 71 away from the fixing plate 4222 penetrates the fixing block 73, and an annular protrusion is formed on the end of the guide rod 71 away from the fixing plate 4222 along its circumferential direction. The second spring 72 is sleeved outside the guide rod 71, and both ends of the second spring 72 are fixedly connected to the fixing plate 4222 and the fixing block 73 respectively. The locking member 8 is used to lock the arc-shaped plate 422 on the mounting plate 7 so that the arc-shaped plate 422 can move synchronously with the baffle 421. Optionally, the locking member 8 is a magnetic lock. The magnetic lock is a prior art and can be directly applied without further elaboration. The sliding stroke of the arc-shaped plate 422 on the mounting plate 7 has a first position and a second position: When in the first position, the locking member 8 can lock it so that the arc-shaped plate 422 can move synchronously with the baffle 421. At this time, the second spring 72 is in a stretched state; When in the second position, the locking member 8 is in an unlocked state. The distance between the arc-shaped plate 422 and the side of the substrate is the largest, and at this time, the second spring 72 is in a natural state.

[0038] When the motor 53 drives the lead screw 51 to rotate, causing the two baffle plates 421 to approach each other, the two arc-shaped plates 422 move towards the two side surfaces of the base material respectively along with the corresponding baffle plates 421. During this process, the arc-shaped plates 422 are in the above-mentioned first position, and the locking member 8 locks them. When the arc-shaped plates 422 contact the side surface of the base material, the motor 53 stops, and at the same time, the locking member 8 releases the locking of the arc-shaped plates 422. At this time, the arc-shaped plates 422 slide on the mounting plate 7 under the pulling of the second spring 72 and move away from the side surface of the base material. With such a setting, during the production process, the arc-shaped plates 422 do not directly contact the base material, thus avoiding damage to the base material due to friction. On the other hand, the arc-shaped plates 422 are pulled away from the surface of the base material by a certain distance under the pulling of the second spring 72. When there is a problem with the control system and the motor 53 cannot stop in time, it can also buy a certain amount of reaction time for the staff to stop the motor 53 in time before the arc-shaped plates 422 squeeze the edge of the base material and deform the base material.

[0039] Furthermore, a movable rod 81 and a plugging rod 82 are movably installed on the arc-shaped plate 422. One end of the plugging rod 82 is plugged into the mounting plate 7. A third elastic member for maintaining the plugging rod 82 in a plugged state is provided on the arc-shaped plate 422. When the movable rod 81 contacts the base material and moves relative to the arc-shaped plate 422, the movable rod 81 drives the plugging rod 82 to separate from the mounting plate 7 to release the locking of the arc-shaped plate 422.

[0040] Specifically, in this embodiment, the locking member 8 includes a movable rod 81 slidably installed on the arc-shaped plate 422. As shown in FIGS. Figure 3 , Figure 5 , Figure 8 and Figure 10 , the movable rod 81 penetrates the arc-shaped plate 422 along the axial direction of the bottom roller 2. The locking member 8 further includes a plugging rod 82 slidably installed on the arc-shaped plate 422. The plugging rod 82 is perpendicular to the movable rod 81, and one end of the plugging rod 82 penetrates to the surface where the arc-shaped plate 422 contacts the mounting plate 7. A plugging hole 74 for mating with the plugging rod 82 is formed on the mounting plate 7. The third elastic member includes a third spring 83 provided inside the arc-shaped plate 422. The third spring 83 is used to maintain the relative positions of the plugging rod 82 and the arc-shaped plate 422. Optionally, a disc is fixedly connected to the end of the plugging rod 82. The third spring 83 is sleeved outside the plugging rod 82 and contacts the disc. A cylindrical cavity for accommodating the third spring 83 is formed on the arc-shaped plate 422. When the third spring 83 is in a natural state, the plugging rod 82 is plugged into the plugging hole 74, and at this time, the arc-shaped plate 422 is in a locked state. Figure 5 and Figure 10The third spring 83 in the view is in a compressed state. In addition, a wedge 811 is fixedly connected to the movable rod 81. One end of the insertion rod 82 away from the mounting plate 7 is bent toward the side where the movable rod 81 is located. The wedge 811 is arranged on one side of the movable rod 81 corresponding to the bent section of the insertion rod 82. When the movable rod 81 extends out the most from the side of the arc-shaped plate 422 corresponding to the base material, the inclined surface of the wedge 811 corresponds to the bent section of the insertion rod 82, so that the insertion rod 82 can cooperate with the wedge 811. Preferably, the movable rod 81 is a square rod to prevent the angle of the wedge 811 from shifting due to the self-rotation of the movable rod 81 and thus being unable to cooperate with the bent section of the insertion rod 82.

[0041] During the process of the arc-shaped plate 422 moving with the material baffle 421, the arc-shaped plate 422 gradually approaches the side surface of the base material until the movable rod 81 contacts the side surface of the base material. The movable rod 81 moves relative to the arc-shaped plate 422 under the block of the base material. During this process, the inclined surface of the wedge 811 on the movable rod 81 gradually moves to contact the bent part of the insertion rod 82. By using the push of the wedge 811 on the bent section of the insertion rod 82, the insertion rod 82 is driven to contract into the arc-shaped plate 422 until the insertion rod 82 is completely separated from the mounting plate 7. At this time, the arc-shaped plate 422 slides relative to the mounting plate 7 under the pull of the second spring 72 and moves away from the side surface of the base material.

[0042] Preferably, an arc-shaped plate 812 is fixedly connected to the end of the movable rod 81, so as to increase the contact area between the movable rod 81 and the base material and avoid damage to the base material.

[0043] As Figure 5 and Figure 10 shown, a fourth spring 84 is also sleeved on the movable rod 81. The fourth spring 84 is used to maintain the relative position between the movable rod 81 and the arc-shaped plate 422. When the fourth spring 84 is in a natural state, the movable rod 81 protrudes from the side surface of the arc-shaped plate 422 corresponding to the material baffle 421. Figure 5 In, another disc is fixedly connected to the end of the movable rod 81 away from the arc-shaped plate 812. The two ends of the fourth spring 84 are respectively fixed to the arc-shaped plate 422 and the disc. Figure 5 The fourth spring 84 shown is in a stretched state, so that it is convenient for the movable rod 81 to automatically recover when not being squeezed by the arc-shaped plate 812 (the movable rod 81 returns to the position where it extends out the most from the side of the arc-shaped plate 422 corresponding to the base material).

[0044] In this embodiment, through the cooperation between the movable rod 81 and the insertion rod 82, the locking of the arc-shaped plate 422 is released passively, simplifying the control program for easy operation. And it is more stable compared to using a magnetic lock. Also, since the material baffle 421 needs to be disassembled and cleaned, using a magnetic lock is not convenient for disassembly due to its circuit connection.

[0045] In yet another embodiment proposed by the present invention, an adjusting seat 11 is slidably mounted on the machine base 1, the bottom plate 41 is fixedly connected to the adjusting seat 11, and a driving member for driving the horizontal movement of the adjusting seat 11 is provided on the machine base 1.

[0046] Specifically, for the convenience of cleaning the bottom plate 41, as Figure 1 shown, an adjusting seat 11 is slidably mounted on the machine base 1, the bottom plate 41 is mounted on the adjusting seat 11, and moreover, a driving member for driving the movement of the adjusting seat 11 is also provided on the machine base 1. The driving member drives the horizontal movement of the adjusting seat 11 so that the bottom plate 41 approaches or moves away from the bottom roller 2. Optionally, the driving member is an existing air cylinder 12. With such a setting, when it is necessary to clean the bottom plate 41, the air cylinder 12 is used to drive the horizontal movement of the adjusting seat 11, so that the adjusting seat 11 drives the bottom plate 41 to move away from the bottom roller 2, leaving enough space for cleaning the bottom plate 41.

[0047] A method for using a coating machine includes the following steps: Step 1: Pass the substrate around the bottom roller 2 and tension it. This process is the feeding process. The coiled substrate is placed on the unwinding mechanism of the coating machine, and the end of the substrate is pulled so that it passes through between the tensioning mechanism, between the bottom roller 2 and the material tank 4, between the bottom roller 2 and the scraper 3, and through the drying mechanism in sequence. Then, the end of the substrate is fixed on the winding mechanism, and the substrate is tensioned by the tensioning mechanism. Step 2: Adjust the distance between the scraper 3 and the substrate to the coating thickness. As Figure 1 shown, another air cylinder 12 for driving the vertical movement of the scraper 3 is provided on the base. The air cylinder 12 extends to push the scraper 3 closer to the bottom roller 2 to adjust the distance between the scraper 3 and the substrate. Step 3: Start the motor 53 in the driving mechanism 5. The motor 53 drives the lead screw 51 to rotate. The lead screw 51 drives the two sliders 52 to approach each other. The two sliders 52 drive the two baffle plates 421 to approach each other. When the arc-shaped plate 422 touches the side of the substrate, the motor 53 stops. At this time, the locking member 8 releases the locking of the arc-shaped plate 422, and the arc-shaped plate 422 moves away from the side of the substrate under the pulling force of the second spring 72. Step 4: Add the coating to the position between the two side plates 42 on the bottom plate 41, and convey the substrate through the cooperation of the unwinding mechanism and the winding mechanism. When the substrate passes through the material tank 4, the corresponding surface of the material tank 4 will adhere to the coating. When the substrate passes through the position where the scraper 3 is located, the scraper 3 will scrape off the excess coating, so as to achieve the set coating thickness.

[0048] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, those of ordinary skill in the art can modify the described embodiments in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A coater, comprising a machine base, on which a bottom roller and a scraper are installed, and a material tank is installed at a position on one side of the bottom roller on the machine base, the material tank including a bottom plate and two side plates arranged thereon, characterized in that, The two side plates are symmetrically arranged with respect to the vertical plane where the central axis of the side surface of the bottom roller is located. A driving mechanism for driving the two side plates to move towards each other is provided on the bottom plate. Both side plates include a material blocking plate and a positioning member connected to each other. The driving mechanism drives the side plates to move until the positioning members contact the side surface of the base material and then stops.

2. The coater according to claim 1, wherein The positioning member is an arc-shaped plate installed on the material blocking plate.

3. A coater according to claim 1, characterized in that, The driving mechanism includes a lead screw rotatably installed on the bottom plate. Sliders are slidably installed at positions corresponding to the material blocking plates on the bottom plate. The material blocking plates are connected to the corresponding sliders. Both sliders are sleeved on the lead screw. When the lead screw is driven to rotate, the two sliders move towards each other.

4. A coater according to claim 3, characterized in that, The material blocking plate is slidably installed on the corresponding slider, and a limiting member for limiting the position of the material blocking plate is provided on the slider.

5. A coater according to claim 4, wherein The limiting member includes a limiting block and a first elastic member. The limiting block is slidably installed in the slider, and the limiting block has a limiting position on the slider that can limit the material blocking plate. The first elastic member maintains the limiting block in the limiting position.

6. A coater according to claim 5, characterized in that, An adjusting rod is slidably connected to the slider. The adjusting rod is fixedly connected to the limiting block and penetrates to the side of the slider corresponding to the other slider. When the limiting block is in the limiting position, the adjusting rod protrudes from the surface of the slider where it is located. When the adjusting rod moves into the slider where it is located, it drives the corresponding limiting block to release the limitation on the material blocking plate.

7. A coater according to claim 2, wherein, The arc-shaped plate is slidably installed on the material blocking plate. After the position of the material blocking plate is adjusted, the arc-shaped plate is driven to move away from the base material.

8. A coater according to claim 7, wherein, A second elastic member and a locking member are provided on the material blocking plate. The locking member is used to lock the position of the arc-shaped plate on the material blocking plate. When the arc-shaped plate moves to contact the side surface of the base material, the locking member releases the lock on the arc-shaped plate, and the second elastic member drives the arc-shaped plate to slide on the material blocking plate and move away from the side surface of the base material.

9. A coating machine according to claim 1, characterized in that An adjusting seat is slidably installed on the machine base. The bottom plate is fixedly connected to the adjusting seat. A driving member for driving the adjusting seat to move horizontally is provided on the machine base.

10. A method for using the coating machine according to any one of claims 1-9, characterized in that, It includes the following steps: S1: Pass the base material around the bottom roller and tension it. S2: Adjust the distance between the doctor blade and the base material to the coating thickness. S3: Start the driving mechanism to drive the two side plates to move towards each other until the positioning members of both side plates contact the side surface of the base material. S4: Add the coating material to the position between the two side plates on the bottom plate and start coating.

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