A coating film preparation device

Abstract

The utility model relates to paint equipment technical field discloses a kind of paint film preparation devices, including rack and symmetrically installing linear guide for driving on rack, further include: symmetrically installing support block in linear guide output end, support block is provided with the connecting frame for supporting on lifting and lowering, connecting frame is fixedly connected with the limiting plate for placing wire bar;Limiting portion for positioning wire bar end portion is provided on connecting frame;The utility model is positioned in end cap by the setting of two groups of end caps, when wire bar end portion is located in end cap and is in abutment with silica gel pad on inner wall, wire bar position is ensured to be in centered state by observing the position of two groups of end caps, end cap is positioned in guide sliding slot by bolt at this time, and then the centering error of wire bar is reduced, even, avoid causing paint film thickness fluctuation, improve the consistency and pass rate of product.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically a coating film preparation device. Background Technology

[0002] The coating film preparation device is a specialized device used to uniformly apply liquid or powder coatings to the surface of a specific substrate under controlled laboratory conditions, and then cure them to form a standardized, uniform thickness and smooth surface coating film. Its core function is to accurately simulate the actual construction environment while strictly controlling the key variables that affect the performance of the coating film.

[0003] A wire bar coater is a machine that can uniformly apply coatings to the surface of a substrate to form a solid continuous film. It relies on a precision metal rod wound with stainless steel wire to control the thickness of the wet film. It is suitable for quickly preparing small-area, flat paint films. The wire bar coaters on the market are mainly of the wire-wound wire bar coater and the extrusion wire bar coater. Although the working principles are different, they are both suitable for coating wet films of a specified thickness. Wire bar coaters have the advantages of small size, light weight, simple operation, and easy cleaning.

[0004] Traditionally, coating operations in laboratories mainly use hand-held rods. The process is as follows: First, the required size of the substrate is cut, the rod is placed on the substrate, and the coating is applied to one side of the rod's forward direction. Then, the rod is manually pushed forward on the substrate to evenly coat the substrate.

[0005] As a core component of coating machines, the stability and alignment of the wire bar installation directly affect the coating quality. Existing wire bar installation methods have certain problems. For example, some installation and fixing equipment cannot ensure precise alignment of the wire bar, and axial displacement is prone to occur during coating operation. This deviation directly leads to uneven coating gaps, resulting in fluctuations in film thickness and affecting product consistency and yield. Furthermore, existing fixing methods during wire bar installation easily cause rigid collisions or friction between the wire bar body and equipment components. Such damage not only destroys the critical working surfaces of the wire bar but also significantly reduces its coating accuracy and service life. Therefore, we urgently need a coating film preparation device to solve these problems. Utility Model Content

[0006] This utility model provides a coating film preparation device that uses a guide slide rail and symmetrical end caps to solve the problem in the background art where the equipment cannot ensure accurate centering of the bar and is prone to axial displacement during coating operation. The design of the upper positioning groove and silicone pad on the limiting plate solves the problem in the background art where the bar body and equipment components experience rigid collision or friction during installation.

[0007] This utility model provides the following technical solution: A coating film preparation device includes a frame and linear guides symmetrically mounted on the frame for driving. It also includes: support blocks symmetrically mounted on the output end of the linear guides, a connecting frame for support being elliptical and movably mounted on the support blocks, a limiting plate for placing a wire rod being fixedly connected to the connecting frame, and a limiting part for positioning the end of the wire rod being provided on the connecting frame.

[0008] As a preferred technical solution of this utility model, the limiting part includes a guide slide rail fixedly installed on the connecting frame, and the end of the guide slide rail is fixedly installed with the limiting plate. An end cap for limiting the end of the wire bar is slidably connected on the guide slide rail. A plurality of threaded holes are linearly and equidistantly opened on the guide slide rail. When the end of the wire bar is fastened in the end cap, the end cap is threadedly connected to the corresponding threaded hole and forms a limiting area.

[0009] As a preferred technical solution of this utility model, a screw is threadedly connected to the end cover, and a clamping plate is rotatably connected to the end of the screw. When the end of the bar is located inside the end cover, the clamping plate and the end of the bar abut against each other to form a clamping area.

[0010] As a preferred technical solution of this utility model, the limiting plate is provided with a limiting groove for placing the wire rod, and the limiting groove is U-shaped.

[0011] As a preferred embodiment of this utility model, damping pads for anti-slip are fixedly installed inside both the limiting plate and the end cap.

[0012] As a preferred embodiment of this utility model, one set of the support blocks is rotatably connected to a second screw, and another set of the support blocks is fixedly connected to a guide rod. One side of the connecting frame is rotatably connected to the second screw, and the other side is slidably connected to the guide rod. When the second screw rotates, the connecting frame moves up and down along the path of the guide rod.

[0013] Compared with the prior art, the present invention provides a coating film preparation device, which has the following beneficial effects: 1. In this coating film preparation device, by setting two sets of end caps, when the end of the wire rod is located inside the end cap and abuts against the silicone pad on the inner wall, the position of the wire rod can be ensured to be centered by observing the position of the two sets of end caps. At this time, the end caps are limited in the guide groove by bolts, thereby reducing the centering error of the wire rod, ensuring uniform coating gap, avoiding fluctuations in film thickness, and improving product consistency and pass rate.

[0014] 2. In this coating film preparation device, the U-shaped limiting groove on the limiting plate provides good initial positioning and support for the placed bar. The inner wall curvature matches the outer circle of the bar, increasing the contact area and improving the stability of the bar placement. It also avoids damage to the bar surface during placement. The addition of a silicone pad further enhances the protection of the bar, preventing rigid collisions or friction between the bar and equipment components during installation, thus improving coating accuracy and service life.

[0015] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model uses two sets of end caps to ensure the centered position of the bar, reducing the centering error of the bar, ensuring uniform coating gap, avoiding fluctuations in paint film thickness, improving product consistency and pass rate. In addition, the setting of limiting plate, U-shaped limiting groove and silicone pad reduces the rigid collision or friction between the bar and the equipment during installation, improving coating accuracy and service life. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 In this utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 In this utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of a partial structure of the present invention. Figure 2 .

[0018] In the diagram: 1. Frame; 2. Linear guide rail; 3. Support block; 4. Connecting frame; 5. Limiting plate; 6. Guide slide rail; 7. End cover; 8. Threaded hole; 9. Screw one; 10. Clamping plate; 11. Limiting groove; 12. Damping pad; 13. Screw two; 14. Guide rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] Reference Figures 1-6 A coating film preparation device includes a frame 1 and linear guide rails 2 symmetrically mounted on the frame 1 for driving. Here, the frame 1 is made of steel structure material, which has high structural strength, good rigidity and is not easily deformed. The frame 1 can provide a stable support foundation for the entire device, reduce coating errors caused by frame 1 shaking, and ensure the stability of the coating film preparation process. Especially in high-speed coating scenarios, it can effectively suppress vibration transmission and create a stable environment for the precise operation of other components.

[0021] It should be noted that the central area of ​​frame 1 is a negative pressure area, which can be connected to an external negative pressure device through pipeline to form an adsorption force. Its negative pressure area can form a uniform adsorption on the test board, avoiding displacement or lifting of the test board during the coating process, ensuring stable contact between the bar and the surface of the test board, and further ensuring uniform coating thickness. It is especially suitable for coating scenarios of thin or flexible substrates, and solves the problem of the test board not being firmly fixed in traditional devices.

[0022] Furthermore, the linear guide 2 adopts a ball screw drive method and is controlled by a servo motor. It has a wide range of movement speeds and high positioning accuracy. Its output end can move smoothly along the length of the frame 1, ensuring that the wire bar has uniform speed and accurate position during the coating process. This avoids uneven paint film thickness caused by speed fluctuations or position deviations, and improves the consistency and pass rate of paint film preparation.

[0023] It also includes support blocks 3 symmetrically installed at the output end of the linear guide rail 2. A connecting frame 4 for support is raised and lowered on the support blocks 3. One set of support blocks 3 is rotatably connected to a screw 13, and another set of support blocks 3 is fixedly connected to a guide rod 14. One side of the connecting frame 4 is rotatably connected to the screw 13, and the other side is slidably connected to the guide rod 14. When the screw 13 rotates, the connecting frame 4 moves up and down along the path of the guide rod 14.

[0024] Here, a handwheel is provided at the end of the screw 13 for easy rotation. A corresponding servo motor can also be provided on the support block 3 to drive the screw 13 to rotate. When the screw 13 rotates, the connecting frame 4 can be raised and lowered through the cooperation between the screw 13 and the guide rod 14. The lifting height of the connecting frame 4 can be precisely controlled to meet the requirements of different substrate thicknesses and coating gaps, and to ensure the straightness of the connecting frame 4 during lifting and lowering, so as to avoid the connecting frame 4 from deviating or tilting, thereby improving the accuracy of lifting and adjusting, and thus ensuring the accuracy of the coating gap between the bar and the substrate.

[0025] A limiting plate 5 for placing wire rods is fixedly connected to the connecting frame 4. The limiting plate 5 has a limiting groove 11 for placing wire rods, and the limiting groove 11 is U-shaped.

[0026] Here, the inner wall curvature of the U-shaped limiting groove 11 is adapted to the outer circle of the commonly used bar. The U-shaped limiting groove 11 can play a good initial positioning and support role for the bar placed in it. The inner wall curvature adapts to the outer circle of the bar, which can increase the contact area and improve the stability of the bar placement. The design of the U-shaped limiting groove 11 also facilitates the picking and putting of the bar, improves the convenience of operation, avoids rigid collision or friction between the bar and equipment parts during placement, and prevents damage to the bar, thereby improving coating accuracy and service life.

[0027] The connecting frame 4 is provided with a limiting part for positioning the end of the bar. The limiting part includes a guide slide rail 6 fixedly installed on the connecting frame 4, and the end of the guide slide rail 6 is fixedly installed with the limiting plate 5. An end cap 7 for limiting the end of the bar is slidably connected on the guide slide rail 6. A plurality of threaded holes 8 are linearly and equidistantly opened on the guide slide rail 6. When the end of the bar is fastened in the end cap 7, the end cap 7 is threadedly connected to the corresponding threaded hole 8 and forms a limiting area. A screw 9 is threadedly connected to the end cap 7, and a clamping plate 10 is rotatably connected to the end of the screw 9. When the end of the bar is located in the end cap 7, the clamping plate 10 abuts against the end of the bar to form a clamping area.

[0028] It should be noted that there are multiple threaded holes 8, and the spacing can be set to 10mm. The actual spacing can be set according to actual needs. When the end of the bar is fastened in the end cap 7, the end cap 7 can be connected to the corresponding threaded hole 8 by bolts, thereby restricting the axial movement of the end cap 7 and the bar, ensuring that the bar does not move axially during the coating process, and improving the uniformity of the paint film thickness.

[0029] Here, the guide rail 6 provides stability for the movement of the end cap 7, preventing the end cap 7 from falling off or shifting. The end cap 7 and the U-shaped limiting groove 11 on the limiting plate 5 are coaxially designed, which ensures that the end cap 7 can be positioned accurately at the end of the bar, effectively ensuring the centering of the bar and reducing coating gap error.

[0030] Furthermore, the sliding of the end cap 7 can adapt to bar lengths, improving the device's compatibility with bars of different specifications. The annular inner wall of the end cap 7 is adapted to the end of the bar, increasing the contact area and improving the positioning effect on the end of the bar.

[0031] Furthermore, when the end of the bar is inside the end cap 7, the screw 9 can be rotated to precisely move the clamping plate 10, thereby adjusting the clamping force at the end of the bar. The operation is simple and the adjustment accuracy is high, which can adapt to the fixing requirements of different bars. The clamping plate 10 is arc-shaped, and this arc-shaped structure fits tightly with the outer circle of the end of the bar, which can evenly transmit the clamping force and avoid excessive local stress that could damage the bar. At the same time, the clamping area formed can further enhance the fixing effect on the bar and prevent the bar from loosening during the coating process.

[0032] Both the limiting plate 5 and the end cap 7 are fixedly installed with damping pads 12 for anti-slip purposes.

[0033] In this embodiment, the damping pad 12 is made of silicone with fine anti-slip texture on its surface. It is installed on the inner wall of the U-shaped limiting groove 11 of the limiting plate 5 and the inner wall of the end cap 7, and abuts against the surface of the plate 10. The silicone material has good elasticity and cushioning performance, which can avoid rigid contact between the bar and the equipment parts, reduce collision and friction damage when installing or replacing the bar, and extend the service life of the bar. The anti-slip texture on the surface can increase the friction between the bar and the parts, prevent the bar from sliding, and improve the fixing stability.

[0034] In this invention, the two ends of the wire rod are placed in the U-shaped limiting grooves 11 on the limiting plate 5, and the bottom of the wire rod contacts the damping pad 12 for initial support. At this time, the end caps 7 on the sliding guide rail 6 are slidable so that the annular grooves in the end caps 7 engage with the two ends of the wire rod, ensuring that the wire rod is centered. When the wire rod is centered, the end caps 7 are connected to the corresponding threaded holes 8 of the guide rail 6 with bolts to ensure that the distances between the end caps 7 at both ends of the wire rod and the limiting plate 5 are equal. Then, the screws 9 on the two end caps 7 are rotated, thereby pushing the clamping plates 10 inside the end caps 7 to abut against the ends of the wire rod. After fixing the wire rod, the height of the connecting frame 4 can be adjusted by rotating the screw 13 according to the thickness of the substrate and the target coating thickness. When the handwheel on the screw 13 is rotated clockwise, the connecting frame 4 will descend along the guide rod 14 until the gap between the bottom of the wire rod and the surface of the substrate reaches the set value. Then, stop rotating the screw 13 and apply the coating evenly to the surface of the substrate. Start the linear guide 2 to drive the wire rod to move at a constant speed along the surface of the substrate. The wire rod scrapes the coating into a uniform coating film. During the coating process, the damping pad 12 effectively absorbs vibration and prevents the wire rod from shifting.

[0035] If the bar needs to be replaced, simply rotate screw 9 in the reverse direction to disengage the clamping plate 10 from the bar, unscrew the bolts of the fixing end cover 7, slide the end cover 7 away from the end of the bar, and the bar can be removed. Then, follow the installation steps described above to replace the bar with a new one.

[0036] Components not described in detail in this article are existing technologies.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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 film preparation apparatus, comprising a frame (1) and linear guide rails (2) symmetrically mounted on the frame (1) for driving, characterized in that, Also includes: A support block (3) is symmetrically installed at the output end of the linear guide (2). A connecting frame (4) for support is raised and lowered on the support block (3). A limiting plate (5) for placing the wire bar is fixedly connected on the connecting frame (4). The connecting frame (4) is provided with a limiting part for positioning the end of the rod.

2. The coating film preparation apparatus according to claim 1, characterized in that, The limiting part includes a guide rail (6) fixedly installed on the connecting frame (4), and the end of the guide rail (6) is fixedly installed with the limiting plate (5). An end cap (7) for limiting the end of the wire rod is slidably connected on the guide rail (6). A plurality of threaded holes (8) are linearly and equidistantly opened on the guide rail (6). When the end of the wire rod is fastened in the end cap (7), the end cap (7) is threadedly connected to the corresponding threaded hole (8) and forms a limiting area.

3. The coating film preparation apparatus according to claim 2, characterized in that, The end cap (7) is threaded with a screw rod (9), and the end of the screw rod (9) is rotatably connected to a clamping plate (10). When the end of the wire rod is inside the end cap (7), the clamping plate (10) abuts against the end of the wire rod to form a clamping area.

4. The coating film preparation apparatus according to claim 3, characterized in that, The limiting plate (5) has a limiting groove (11) for placing the wire rod, and the limiting groove (11) is U-shaped.

5. The coating film preparation apparatus according to claim 4, characterized in that, Both the limiting plate (5) and the end cap (7) are fixedly installed with damping pads (12) for anti-slip purposes.

6. The coating film preparation apparatus according to claim 1, characterized in that, One set of the support blocks (3) is rotatably connected to a screw rod (13), and another set of the support blocks (3) is fixedly connected to a guide rod (14). One side of the connecting frame (4) is rotatably connected to the screw rod (13), and the other side is slidably connected to the guide rod (14). When the screw rod (13) rotates, the connecting frame (4) moves up and down along the path of the guide rod (14).

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