Coating die with lip automatic adjustment

Abstract

The utility model belongs to the technical field of coating equipment, specifically disclose a kind of automatic regulation of lip coating die, it includes die main body, die main body is formed by upper die, lower die, gasket enclose slit, slit outlet is provided with lip, the upper side of upper die is fixed with lip screw;Adjusting assembly includes locating plate, locating plate is fixed with fixed frame, fixed frame is rotatably connected with lead screw, the opposite thread is equipped in the both ends of lead screw, drive motor drives lead screw rotation drives nut to move, electric push rod promotes spanner to fit lip screw, servo motor drives spanner to adjust screw;Displacement sensor real-time monitoring displacement and feedback to remote controller.The utility model realizes lip automatic regulation, and adjustment precision is high, and efficiency is high, solve the problem of adjustment mode to rely on artificial.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically to a coating die head with automatic lip adjustment. Background Technology

[0002] As a key component in the coating production line, the lip gap of the coating die head directly determines the coating thickness and uniformity of the coating material on the substrate surface. In actual industrial production, different substrate characteristics, different coating material parameters, and different product specifications all require targeted adjustments to the lip gap of the coating die head.

[0003] Traditional coating dies require operators to use wrenches and other tools to tighten dozens of lip screws distributed along the length of the die head one by one, relying on experience to judge the tightness of the screws and adjust the opening angle of the lips. This method is prone to uneven manual operation and judgment errors, which can lead to differences in the lip gap along the length direction, resulting in quality defects such as thickness deviation, transverse streaks, and edge coating omissions in the coated products.

[0004] Therefore, to address the issue of low adjustment efficiency caused by manual adjustment, a coating die head with automatic lip adjustment is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a coating die head with automatic lip adjustment to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A coating die head with automatic lip adjustment includes a die head body, characterized in that: the die head body includes an upper die head and a lower die head, the upper die head and the lower die head are made of stainless steel, which has high strength and corrosion resistance, the upper die head and the lower die head are distributed opposite to each other and locked by bolts to ensure the sealing of the die head body and prevent slurry leakage. A gasket is sandwiched between the upper and lower die heads. The gasket's shape perfectly matches the contact surfaces of the upper and lower die heads, further improving sealing performance. The upper and lower die heads and the gasket form a slit, and a lip is fixed at the slit's outlet. The slit's cross-section is trapezoidal, ultimately connecting with the lip 105. This structure reduces slurry flow resistance and ensures uniform slurry distribution along the slit. Several lip screws are evenly distributed along the length of the upper die head. The central axes of the lip screws are on the same straight line and perpendicular to the coating direction. By tightening the lip screws, the distance between the upper and lower die heads at corresponding positions can be changed, thereby adjusting the opening angle and gap size of the lips.

[0008] An adjustment assembly is fixed above the upper die head. The adjustment assembly includes a positioning plate, which is fixed between the back plate of the upper die head and the lip screw by bolts. A fixing frame is detachably installed on the side of the positioning plate near the lip screw. The fixing frame 202 is a rectangular frame structure made of aluminum alloy. Both ends of the fixing frame are rotatably connected to lead screws through bearing seats. The two ends of the lead screws have threads with opposite directions of rotation, and two nuts are respectively threaded to the two ends of the lead screws. A drive motor is fixed to the outside of the fixing frame through a motor seat. The output shaft of the drive motor is connected to the lead screw through a coupling. The drive motor drives the lead screw to rotate, thereby causing the two nuts to move relative to or towards each other along the axis of the lead screw. An electric push rod is fixed to the side of each nut near the lip screw. The output end of the electric push rod is fixedly connected to a servo motor through a flange. The output shaft of the servo motor is driven by a positioning block through a coupling. The positioning block has a built-in wrench.

[0009] This invention further explains that displacement sensors are fixed to one end of the lead screw and the nut, respectively. These sensors output signals to a remote controller, which then sends drive commands to the drive motor, controlling the lead screw to rotate until the nut reaches the target position. A displacement sensor is also fixed inside the positioning block to monitor the vertical movement in real time. The displacement sensors and the remote controller form a monitoring and control unit, achieving automated and precise adjustment through feedback control.

[0010] This utility model further illustrates that limit blocks are fixed at both ends and in the middle of the lead screw. The limit blocks are circular rubber blocks. The rubber material of the limit blocks serves as a buffer to reduce the impact force of collisions and protect the lead screw and nut mechanism.

[0011] This utility model further illustrates that the lead screw is a high-precision ball screw, and the threads at both ends of the lead screw are trapezoidal threads.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model,

[0013] (1) By coordinating the drive motor, electric push rod and servo motor, combined with the real-time monitoring of the displacement sensor and the command control of the remote controller, the positioning, fitting and tightness adjustment of the lip screw can be completed without manual intervention, which solves the problems of low efficiency and poor accuracy of manual adjustment.

[0014] (2) By setting a detachable fixed frame, it is easy to adjust the assembly and maintenance of the components; the design of the reverse threads and limit blocks at both ends of the lead screw can be adapted to different lengths of die heads and different numbers of lip screws to meet the diverse coating process requirements. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0019] Figure 4 This is the utility model Figure 3 Schematic diagram of area A;

[0020] In the diagram: 1. Die head body; 101. Upper die head; 102. Lower die head; 103. Shim; 104. Slit; 105. Lip; 106. Lip screw; 2. Adjustment assembly; 201. Positioning plate; 202. Fixing frame; 203. Lead screw; 204. Nut; 205. Drive motor; 206. Electric push rod; 207. Servo motor; 208. Positioning block; 209. Wrench; 210. Limit block; 3. Displacement sensor. Detailed Implementation

[0021] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a coating die head with automatic lip adjustment, comprising a die head body 1.

[0023] like Figure 1 and Figure 2 As shown, the mold head body 1 includes an upper mold head 101 and a lower mold head 102. The upper mold head 101 and the lower mold head 102 are distributed opposite to each other and are locked together by bolts to ensure the sealing of the mold head body 1 and prevent slurry leakage.

[0024] A gasket 103 is fixed between the upper mold head 101 and the lower mold head 102. The shape of the gasket 103 is consistent with the mating surface of the upper mold head 101 and the lower mold head 102, and its edge is aligned with the edge of the mold head.

[0025] A slit 104 is formed between the upper die head 101 and the lower die head 102 through a gasket 103. A lip 105 is fixedly provided at the outlet of the slit 104 on both the upper die head 101 and the lower die head 102. The slit 104 has a trapezoidal cross-section, with a wider inlet end that gradually narrows towards the outlet end, eventually connecting with the lip 105. The lip 105 allows the slurry to flow out of the slit 104. The upper die head 101 has several lip screws 106 along its length. The central axes of all the lip screws 106 are located on the same straight line and perpendicular to the coating direction. By tightening the lip screws 106, the distance between the upper die head 101 and the lower die head 102 at corresponding positions can be changed, thereby adjusting the opening angle and gap size of the lip 105.

[0026] like Figure 2-4 As shown, an adjustment assembly 2 is fixed above the upper die head 101. The adjustment assembly 2 includes a positioning plate 201, which is fixed between the back plate of the upper die head 101 and the lip screw 106 by bolts. A fixing frame 202 is detachably installed on the side of the positioning plate 201 near the lip screw 106. The fixing frame 202 has a rectangular frame structure. Inside the fixing frame 202, both ends are rotatably connected to a lead screw 203 through bearing seats. The lead screw 203 is located directly above several lip screws 106. The two ends of the lead screw 203 are threaded with opposite threads. A nut 204 is rotatably connected to the threaded ends of the lead screw 203. One end of the lead screw 203 is connected to a drive motor 205. The drive motor 205 is fixed to the outside of the fixing frame 202 by a motor seat. The output shaft of the drive motor 205 is connected to the lead screw 203 through a coupling.

[0027] The drive motor 205 drives the lead screw 203 to rotate by receiving a signal from the remote controller. Since the two nuts 204 are respectively engaged with the reverse threads at both ends of the lead screw 203, when the lead screw 203 rotates, the two nuts 204 can move relative to or towards each other along the axial direction of the lead screw 203.

[0028] Each nut 204 has an electric actuator 206 fixed to one side near the lip screw 106. The output end of the electric actuator 206 is fixedly connected to a servo motor 207 via a flange. The output shaft of the servo motor 207 is driven by a positioning block 208 via a coupling. A wrench 209 is fixed inside the positioning block 208, and the wrench 209 matches the head of the lip screw 106. Moving the nut 204 until the center of the wrench 209 is on the same straight line as the center of the lip screw 106, the servo motor 207 drives the positioning block 208 to rotate, thereby causing the wrench 209 to rotate synchronously, thus adjusting the tightness of the lip screw 106. The positioning block 208 and the output end of the electric actuator 206 are rotatably connected via bearings, ensuring that the positioning block 208 can rotate freely without affecting the longitudinal movement of the electric actuator 206.

[0029] Displacement sensors 3 are fixed at the midpoint of the axis of the lead screw 203 and on the nut 204, respectively. These sensors output signals to a remote controller to calculate the required movement distance and then send a drive command to the drive motor 205, controlling the lead screw 203 to rotate until the nut 204 reaches the target position. A displacement sensor 3 is also fixed inside the positioning block 208 to monitor the vertical movement in real time. The displacement sensors 3 and the remote controller form a monitoring and control unit, achieving automated and precise adjustment through feedback control.

[0030] It should be noted that the two ends and the middle of the lead screw 203 are fixed with limit blocks 210 to constrain the movement range of the nut 204. The limit blocks 210 are made of rubber to buffer the impact force and protect the lead screw 203 and the nut mechanism.

[0031] Working Principle: During use, the remote controller calculates the target position parameters based on the input coating width and the spacing of the lip screws. The operator sends a control command to the drive motor 205 via the remote controller, which drives the lead screw 203 to rotate. Since the threads at both ends of the lead screw 203 rotate in opposite directions, the two nuts 204 move relative to each other along the lead screw 203. The displacement sensor 3 monitors the lateral position of the nuts 204 in real time and feeds the data back to the controller. When the nuts 204 move to the target position, the controller issues a stop command, the drive motor 205 stops rotating, and the lateral positioning is completed. Then, the remote controller sends an extension command to the electric push rod 206. The electric push rod 206 pushes the servo motor 207, the positioning block 208, and the wrench 209 to move downwards in the vertical direction until the wrench 209 fits onto the head of the lip screw 106. The displacement sensor 3 built into the positioning block 208 feeds back a signal to the controller, and the electric push rod 206 stops extending, completing the longitudinal positioning.

[0032] After positioning is completed, the remote controller sends a rotation command to the servo motor 207. The servo motor 207 drives the positioning block 208 and the wrench 209 to rotate, thereby turning the lip screw 106 and changing the gap size of the lip 105. After adjustment, the slurry is transported to the inlet end of the slit 104 of the die head body 1 through the feed pipe. The closed space formed by the upper die head 101, the lower die head 102 and the gasket 103 generates pressure. Under the action of pressure, the slurry flows evenly along the slit 104. Finally, the slurry is continuously extruded from the lip 105 and coated on the surface of the substrate.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coating die head with automatic lip adjustment, comprising a die head body (1), characterized in that: The main body of the mold head (1) includes an upper mold head (101) and a lower mold head (102). The upper mold head (101) has a plurality of lip screws (106) distributed along the length direction. The lip screws (106) are evenly distributed and collinear. The lip gap can be changed by adjusting the tightness of the lip screws (106). An adjustment assembly (2) is fixed above the upper die head (101). The adjustment assembly (2) includes a positioning plate (201). The positioning plate (201) is fixed between the back plate of the upper die head (101) and the lip screw (106) by bolts. A rectangular frame fixing frame (202) is detachably installed on the side of the positioning plate (201) near the lip screw (106). Both ends of the fixing frame (202) are rotatably connected to lead screws (203) through bearing seats. Both ends of the lead screws (203) are provided with rotation direction phases. The screw has a reverse thread, and two nuts (204) are threaded to both ends of the lead screw (203); a drive motor (205) is fixed to the outside of the fixed frame (202) by a motor seat, and its output shaft is connected to the lead screw (203) through a coupling; an electric push rod (206) is fixed to the side of each nut (204) near the lip screw (106), and a positioning block (208) is rotatably connected to the output end of the electric push rod (206), and a wrench (209) is built into the positioning block (208).

2. The coating die head with automatic lip adjustment according to claim 1, characterized in that: The upper die head (101) and the lower die head (102) are distributed opposite to each other and locked by bolts. A gasket (103) is sandwiched between the upper die head (101) and the lower die head (102). The shape of the gasket (103) is consistent with the contact surface of the upper die head (101) and the lower die head (102). The upper die head (101), the lower die head (102) and the gasket (103) form a narrow slit (104) with a trapezoidal cross section. A lip (105) is fixed at the outlet of the slit (104) for the slurry to flow out.

3. A coating die head with automatic lip adjustment according to claim 1, characterized in that: Displacement sensors (3) are fixed on the lead screw (203) and the nut (204) respectively; a displacement sensor (3) is also fixed inside the positioning block (208). The signal output terminal of the displacement sensor (3) is connected to the remote controller to form a monitoring and control unit.

4. A coating die head with automatic lip adjustment according to claim 1, characterized in that: The output end of the electric push rod (206) is fixed with a servo motor (207) via a flange, and the output shaft of the servo motor (207) is driven by the positioning block (208) via a coupling.

5. A coating die head with automatic lip adjustment according to claim 1, characterized in that: The lead screw (203) has limit blocks (210) fixed at both ends and in the middle. The limit blocks (210) are circular rubber blocks.

6. A coating die head with automatic lip adjustment according to claim 1, characterized in that: The lead screw (203) is a high-precision ball screw, and the threads at both ends of the lead screw (203) are trapezoidal threads.

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