Slit type coating die head for coating machine

Abstract

The utility model relates to the technical field of coating machine parts, in particular to a slit type coating die head for a coating machine, which comprises a coating die head shell. An interval adjusting groove is formed in the inner wall of the bottom of a discharging opening of the coating die head shell in a penetrating mode, and the coating die head shell is provided with a slit adjusting structure for adjusting the slit; the slit adjusting structure comprises a slit adjusting plate which is movably arranged on the inner side of the interval adjusting groove in a sealed mode. According to the utility model, the width of the slit of the coating die head shell is adjusted, so that the discharging speed is improved. During cleaning, the slit adjusting plate seals the coating die head shell, the water inlet pipe is connected with the positive pressure pump body, the electromagnetic valve body is opened, high-pressure water flushes the internal space, and cleaning water is discharged from the water discharging pipe. And when the drying fan is started, the electromagnetic valve body is closed, and the interior of the coating die head shell is dried by hot air, so that residual paint in the coating die head shell can be conveniently cleaned when the paint is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machine parts, in particular to a slit coating die head for a coating machine. Background Art

[0002] At present, mainstream coating machines all use slit extruders, among which the slit die is the key coating device, which is to make the beam slurry uniformly distributed laterally and then evenly coated on the substrate. The key to the die is the structural design of the internal cavity and the die lip, which determines the uniformity of the lateral coating of the slurry, thereby determining the consistency of the product batch, which is crucial to the overall performance and pass rate of the product. A Chinese patent discloses a slit coating die for a coating machine (authorization announcement number CN211838820U). The patented technology discloses a slit coating die for a coating machine, including a matching upper die and a lower die, a feed port and a cavity are provided on the lower die, the upper die and the lower die form a die lip gap, an adjustment block detachably connected to the lower die is provided in the cavity, a pre-pressing surface is provided on the adjustment block, and the pre-pressing surface and the lower die form a pre-equalizing gap, and the feed port, the cavity, the pre-equalizing gap and the die lip gap are connected in sequence. The shape of the adjustment block is designed according to the actual rheological characteristics of the coating slurry. After the adjustment block is installed, the structure of the cavity can be changed, so that the slit coating die head is adapted to the characteristics of the slurry and the uniformity of its transverse coating is ensured. When changing different slurries, only the adjustment block needs to be replaced, so that the slit coating die head can be applied to a variety of slurries, which greatly reduces the cost of making the slit coating die head. At the same time, the adjustment block and the cavity form a pre-equalizing gap, which increases the pre-uniform distribution link of the slurry and improves the accuracy of the transverse coating of the slit coating die head. This patented technology solves the problem that the current die head design is usually based on the actual rheological characteristics of the coating slurry, and the cavity and die lip structure of the die head are designed after analysis using dedicated fluid analysis software. The die head structure processed in this way is fixed and can only adapt to one slurry. When a certain parameter of the slurry changes, the uniformity of the transverse coating of the die head will not meet the requirements. In order to achieve the best effect, it is necessary to replace the matching die head, which will greatly increase the cost and is not conducive to reducing costs in actual production.

[0003] However, in the prior art, the specifications of the coating die slit need to be adjusted according to the specifications of the coating machine roller rod, and the problem of being able to adjust the slit interval in the prior art needs to be solved.

[0004] Therefore, those skilled in the art provide a slot coating die for a coating machine to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides:

[0006] A slit coating die for a coating machine comprises: a coating die shell; a spacing adjustment groove is provided through the inner wall at the bottom of the discharge port of the coating die shell, and the coating die shell is equipped with a slit adjustment structure for adjusting the slit; the slit adjustment structure comprises a slit adjustment plate which is sealingly and movably arranged on the inner side of the spacing adjustment groove, a screw is spirally driven on the inner wall of the middle part of the slit adjustment plate, and a shaft frame plate is rotatably mounted on the outer side of the screw, and the screw is fixedly mounted on the bottom wall of the coating die shell through the shaft frame plate.

[0007] Preferably, a transmission rod rotatably arranged on the inner wall of the shaft frame plate is fixedly mounted on the bottom end of the screw, and a worm gear is fixedly mounted on the outer wall of the transmission rod.

[0008] Preferably, the worm wheel is engaged with a worm, and one end of the worm is connected to a servo motor.

[0009] The servo motor is fixedly mounted on the inner wall of the shaft frame plate and is used to actively drive the worm to rotate.

[0010] Preferably, the outer side of the coating die head shell is detachably and sealedly equipped with a loading and unloading frame, and a feeding pipe for supplying coating raw materials is connected through the middle of the loading and unloading frame.

[0011] Preferably, a cleaning inlet cylinder is connected through one side of the coating die head shell, and a drying fan for supplying hot air is installed at one end of the cleaning inlet cylinder away from the coating die head shell.

[0012] Preferably: a solenoid valve is installed between the drying fan and the cleaning inlet drum, and the bottom of the cleaning inlet drum is connected to a water inlet pipe.

[0013] A solenoid valve body is installed between the water inlet pipe and the cleaning inlet cylinder.

[0014] Preferably: the other side of the coating die shell is connected with a cleaning cylinder, a second solenoid valve is installed between the cleaning cylinder and the coating die shell, and the end of the cleaning cylinder away from the coating die shell is connected with a drain pipe for discharging the waste water after cleaning.

[0015] The technical effects and advantages of this utility model are:

[0016] In the present invention, the slit width of the coating die shell can be adjusted through the slit adjustment structure. After the servo motor is started, the worm rotates and drives the drive rod to rotate through the worm gear, thereby rotating the screw, pushing the slit adjustment plate to move along the interval adjustment groove, thereby adjusting the slit width of the coating die shell to increase the discharge speed. During cleaning, the slit adjustment plate closes the coating die shell, the water inlet pipe is connected to the positive pressure pump body, the solenoid valve body is opened, high-pressure water flushes the internal space, and the cleaning water is discharged from the drain pipe. When the drying fan is started, the solenoid valve body is closed, and hot air dries the interior of the coating die shell, which is conducive to cleaning the residual paint inside the coating die shell when replacing the paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a slit coating die head for a coating machine provided in this application;

[0018] Figure 2 This is a schematic structural diagram of a drain pipe in a slot-type coating die head for a coating machine provided in the present application;

[0019] Figure 3 This is a schematic structural diagram of the rear side of a slit coating die head for a coating machine provided in this application;

[0020] Figure 4 This is a schematic structural diagram of a shaft support plate in a slot-type coating die head for a coating machine provided in the present application;

[0021] Figure 5 This is a schematic structural diagram of point A in a slit coating die head for a coating machine provided in this application.

[0022] In the picture:

[0023] 1. Coating die shell; 2. Spacing adjustment slot;

[0024] 3. Slit adjustment structure; 301. Slit adjustment plate; 302. Screw; 303. Shaft support plate; 304. Transmission rod; 305. Worm gear; 306. Worm; 307. Servo motor;

[0025] 4. Loading and unloading frame; 5. Feed pipe; 6. Cleaning inlet drum; 7. Solenoid valve 1; 8. Drying fan; 9. Cleaning drum; 10. Solenoid valve 2; 11. Drain pipe; 12. Water inlet pipe. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The examples of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Numerous modifications and variations will be apparent to those skilled in the art. The examples are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0027] For examples, see Figures 1 to 5In this embodiment, a slit coating die for a coating machine is provided, comprising: a coating die shell 1; a spacing adjustment groove 2 is provided through the inner wall of the bottom of the discharge port of the coating die shell 1, and the coating die shell 1 is equipped with a slit adjustment structure 3 for adjusting the slit; the slit adjustment structure 3 includes a slit adjustment plate 301 that is sealingly and movably arranged on the inner side of the spacing adjustment groove 2, a screw 302 is spirally driven on the inner wall of the middle part of the slit adjustment plate 301, and a shaft frame plate 303 is rotatably installed on the outer side of the screw 302, and the screw 302 is fixedly assembled on the bottom wall of the coating die shell 1 through the shaft frame plate 303.

[0028] The bottom end of the screw 302 is fixedly equipped with a transmission rod 304 rotatably arranged on the inner wall of the shaft frame plate 303, and the outer wall of the transmission rod 304 is fixedly equipped with a worm gear 305. The worm gear 305 is meshed with a worm 306, and one end of the worm 306 is connected to a servo motor 307.

[0029] The servo motor 307 is fixedly mounted on the inner wall of the shaft frame 303 and is used to actively drive the worm 306. The outer side of the coating die head shell 1 is detachably sealed with a loading and unloading frame 4, and the middle of the loading and unloading frame 4 is connected to a feeding pipe 5 for supplying coating raw materials.

[0030] A cleaning inlet cylinder 6 is connected through one side of the coating die head shell 1 , and a drying fan 8 for supplying hot air is installed at one end of the cleaning inlet cylinder 6 away from the coating die head shell 1 .

[0031] A solenoid valve 1 (7) is installed between the drying fan 8 and the cleaning inlet drum 6. A water inlet pipe 12 is connected to the bottom of the cleaning inlet drum 6. A solenoid valve body is installed between the water inlet pipe 12 and the cleaning inlet drum 6. A cleaning drum 9 is connected to the other side of the coating die housing 1. A solenoid valve 2 (10) is installed between the cleaning drum 9 and the coating die housing 1. A drain pipe 11 is connected to the end of the cleaning drum 9 away from the coating die housing 1, which is used to discharge the wastewater after cleaning.

[0032] According to the above embodiment, the working principle of the present invention is:

[0033] The coating die head shell 1 can be adjusted for the width of the slit opening for discharging materials through the slit adjustment structure 3;

[0034] By starting the servo motor 307, the worm 306 can be rotated, and the rotation of the worm 306 engages with the worm wheel 305, so that the transmission rod 304 fixed with the screw 302 is driven to rotate by the worm wheel 305;

[0035] The rotating screw 302 can move the slit adjustment plate 301 along the interval adjustment slot 2;

[0036] The slit adjustment plate 301 in the interval adjustment groove 2 can adjust the width of the slit of the coating die head shell 1, which can help increase the discharge speed;

[0037] When the coating die head shell 1 is cleaned, the slit adjustment plate 301 is in a state of closing the coating die head shell 1;

[0038] The water inlet pipe 12 is connected to the external positive pressure pump body. When water is supplied to the water inlet pipe 12, the electromagnetic valve body between the water inlet pipe 12 and the cleaning inlet cylinder 6 is opened, so that the high-pressure water source can flush and clean the internal space of the coating die head shell 1. The cleaning water source is discharged from the drain pipe 11 through the opened electromagnetic valve 2 10;

[0039] When the drying blower 8 is started, the electromagnetic valve body is in a closed state. The drying blower 8 can be started to allow hot air to pass through the interior of the coating die head shell 1, thereby drying the interior space of the coating die head shell 1.

[0040] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0041] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A slit coating die head for a coating machine, characterized in that: include: A coating die head shell (1); a gap adjustment groove (2) is provided through the inner wall of the bottom of the discharge port of the coating die head shell (1), and the coating die head shell (1) is equipped with a slit adjustment structure (3) for adjusting the slit; The slit adjustment structure (3) comprises a slit adjustment plate (301) which is sealingly and movably arranged on the inner side of the interval adjustment groove (2); a screw rod (302) is spirally driven on the inner wall of the middle portion of the slit adjustment plate (301); a shaft support plate (303) is rotatably mounted on the outer side of the screw rod (302); and the screw rod (302) is fixedly mounted on the bottom wall of the coating die head shell (1) via the shaft support plate (303).

2. A slit coating die for a coating machine according to claim 1, characterized in that: The bottom end of the screw rod (302) is fixedly equipped with a transmission rod (304) which is rotatably arranged on the inner wall of the shaft frame plate (303), and the outer wall of the transmission rod (304) is fixedly equipped with a worm gear (305).

3. A slit coating die for a coating machine according to claim 2, characterized in that: The worm wheel (305) is meshed with a worm (306), and one end of the worm (306) is connected to a servo motor (307).

4. A slit coating die for a coating machine according to claim 1, characterized in that: The outer side of the coating die head shell (1) is detachably and sealedly equipped with a loading and unloading frame (4), and the middle of the loading and unloading frame (4) is connected through a feeding pipe (5) for supplying coating raw materials.

5. The slit coating die head for a coating machine according to claim 1, characterized in that: A cleaning inlet cylinder (6) is connected through one side of the coating die head shell (1), and a drying fan (8) for supplying hot air is installed at one end of the cleaning inlet cylinder (6) away from the coating die head shell (1).

6. A slit coating die for a coating machine according to claim 5, characterized in that: A solenoid valve (7) is installed between the drying fan (8) and the cleaning inlet drum (6), and the bottom of the cleaning inlet drum (6) is connected to a water inlet pipe (12).

7. The slit coating die head for a coating machine according to claim 1, characterized in that: The other side of the coating die head shell (1) is connected to a cleaning cylinder (9), and a second solenoid valve (10) is installed between the cleaning cylinder (9) and the coating die head shell (1). The end of the cleaning cylinder (9) away from the coating die head shell (1) is connected to a drain pipe (11) for discharging the waste water after cleaning.

Images