CN212441892U - Lift coating fixture and lift coating equipment - Google Patents

Abstract

The application provides a carry and draw and scribble membrane anchor clamps and carry and draw and scribble equipment of membrane relates to chemical film preparation technical field. A lifting coating clamp comprises a main body, a sealing ring and two pressure rods. The main part has the recess and encloses the platform of locating recess all around, and the platform is used for placing the component of waiting to film. The sealing washer encloses around locating the recess and with platform sealing connection. The two pressure levers can be respectively detachably connected with the platforms on the two sides of the groove so as to enable the element to be coated placed on the platform to be tightly attached to the sealing ring. The lifting coating fixture clamps the element at two sides, and does not clamp the element at the top and the bottom of the element higher than the surface of the element, thereby avoiding influencing the uniformity of the film layer on the surface of the element. The matching of the groove and the sealing ring is adopted to realize the single-side sealing of the large-caliber high-diameter-thickness-ratio element, and different chemical films can be prepared on two different surfaces of the large-caliber high-diameter-thickness-ratio element.

Description

Lift coating fixture and lift coating equipment

Technical Field

The application relates to the technical field of chemical film preparation, in particular to a lifting film coating clamp and a lifting film coating device.

Background

The sol-gel technique for preparing the film generally includes spin coating, meniscus method, pulling method, etc. The rotating method has complex process and complex factors influencing the uniformity of the film layer, and requires that an element to be coated can bear high-speed rotating vibration and easily causes pollution or damage to the surface of the non-coating film. Although the meniscus method can realize the preparation of low-speed films, the process has high requirements on equipment, and the uniformity of the prepared films is poor. The pulling method is to immerse the whole element in the prepared sol, then to pull the element out of the sol at a precisely controlled speed, to form a uniform liquid film on the substrate surface under the action of viscosity and gravity, and to form a uniform film on the whole surface of the element soaked by the sol as the solvent in the sol evaporates rapidly. For the requirement of coating on one side, the current pulling device is difficult to realize.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a lifting coating clamp and a lifting coating device, which aim to solve the technical problem that single-side uniform coating is not easy to perform on a large-diameter high-diameter-thickness ratio element.

In a first aspect, an embodiment of the present application provides a lifting coating fixture, which includes a main body, a seal ring, and two press rods. The main part has the recess and encloses the platform of locating recess all around, and the platform is used for placing the component of waiting to film. The sealing washer encloses around locating the recess and with platform sealing connection. The two compression bars can be detachably connected with the platforms on the two sides of the groove respectively, and the two compression bars are configured to act on the two sides of the element to be coated and connected with the platforms so as to enable the element to be coated placed on the platforms to be tightly attached to the sealing ring.

The lifting coating fixture clamps the element at two sides, and does not clamp the element at the top and the bottom of the element higher than the surface of the element, thereby avoiding influencing the uniformity of the film layer on the surface of the element. By adopting the matching of the groove and the sealing ring, the single-side sealing of the large-caliber high-diameter-thickness-ratio element is realized, the surface without coating is protected, the surface is prevented from contacting with any part, and different chemical films can be prepared on two different surfaces of the large-caliber high-diameter-thickness-ratio element.

In one possible implementation, the mesa flatness of the mesa is no greater than 130 μm.

Because the large-caliber high-diameter-thickness ratio element structure is thinner, if the platform flatness is not enough, when the two sides of the element to be coated are subjected to the same external force, the part of the element to be coated is deformed such as bending and the like, so that the element to be coated is broken, and the platform flatness of the platform is important. When the flatness of the stage surface of the stage is not more than 130 μm, the structure can largely prevent the damage of the member to be coated.

In a possible implementation mode, the platform comprises a first table top, a second table top, a third table top and a fourth table top which are sequentially connected and arranged along the periphery of the groove, the first table top and the third table top are respectively provided with at least two bosses which are detachably connected with the pressure rod, and the bosses are located on the periphery of the sealing ring.

The boss needs to be higher than the platform surface of platform by a certain height, and the thickness of platform and depression bar junction can be improved to this structure, and then improves the steadiness that depression bar and platform are connected. The first table top and the third table top are provided with at least two bosses used for being connected with the pressing rod, so that the limitation on the position of the pressing rod can be improved, and the fixing stability of elements is further improved.

In a possible realization, the second table surface is provided with at least one protection table, which is positioned at the periphery of the sealing ring to limit the element to be coated from slipping off the lifting coating fixture.

The protection platform is used for protecting the element at the bottom, and the element is prevented from falling off from the platform in the lifting process.

In a possible implementation, the fourth table is provided with a pillar stand, and the pillar stand is located at the periphery of the sealing ring. In a possible implementation mode, the device further comprises a hanging rack, and the hanging rack is fixedly connected with the column base.

The lifting film coating clamp is hung on the film coating device through the hanging frame, and the use of the lifting film coating clamp is convenient.

In a possible implementation manner, the pressure rod comprises a fastening part and a fixing part, the fastening part is used for being detachably connected with the platform, and the fixing part is used for being matched with the sealing ring to clamp and fix the element to be coated placed on the platform. In one possible implementation, the cross section of the pressure rod is of an L-shaped structure.

The structure limits the functions of different parts of the pressure lever so as to more stably fix the element.

In one possible implementation, the ratio of the width of the sealing ring to the length of the longest side of the groove is (1-1.5): 90.

In order to reduce the contact area between the element to be coated and the platform and increase the protection area of the element to be coated, the contact area between the element and the inner table surface is as small as possible. However, if the contact area between the device and the inner mesa is too small, the two sides of the device are subjected to a large pressure, which may cause damage such as cracking of the device. On this basis, this application adopts above-mentioned structure can avoid the condition that the component appears breaking when the protection area of maximize component.

In a second aspect, a lifting coating equipment is provided, which comprises a mechanical arm and the lifting coating clamp, wherein the lifting coating clamp is hung on the mechanical arm, and the mechanical arm can drive the lifting coating clamp to move.

The lifting coating equipment can realize single-side sealing of the large-caliber high-diameter-thickness-ratio element and can prepare different chemical films on two different surfaces of the large-caliber high-diameter-thickness-ratio element.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a main body from a first viewing angle according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a second perspective of a main body according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a lift coating fixture and an element to be coated according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a first view of a compression bar according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a second viewing angle of the pressing rod according to the embodiment of the present application.

Icon: 10-an element to be coated; 100-pulling a coating clamp; 110-a body; 111-grooves; 113-a platform; 1131 — a first mesa; 1132 — a second mesa; 1133-a third mesa; 1134-fourth mesa; 115-a card slot; 117-boss; 118-a protection station; 119-a column base; 120-sealing ring; 130-a compression bar; 131-a fastening portion; 133-a fixed part; 140-silica gel gasket; 150-hanger.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when products of the application are used, and are used only for convenience in describing the application and for simplicity in description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The prior preparation method of the chemical film has certain defects, the pulling method commonly used for elements is suitable for full-surface coating, if only one-side coating or different films are coated on different surfaces, protective measures need to be taken for the surface without coating, and the damage to the film surface is inevitable in the process of protecting the film surface, so that the film quality of the element is influenced. In addition, in the case of a large-diameter high-aspect-ratio element, since the surface area is large but the thickness is small, the element is easily damaged in the film surface protection process, and it is difficult to coat one surface of the element having such a structure.

The present embodiment provides a dip coating jig 100, which is designed structurally to achieve uniform coating on one surface of a large-diameter high-aspect-ratio element without affecting the coating quality. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 and fig. 2 are schematic structural diagrams of a first viewing angle and a second viewing angle of a main body 110 provided in this embodiment, respectively, and fig. 3 is a schematic structural diagram of a lift coating jig 100 and a to-be-coated element 10 provided in this embodiment. The pull coating jig 100 includes a main body 110, a packing 120, and two pressing rods 130. The main body 110, the seal ring 120 and the two pressing rods 130 cooperate to protect and position the element 10 to be coated.

In the embodiment of the present application, the main body 110 is a plate-like structure, a plane of the main body 110 has a groove 111 and a platform 113 surrounding the groove 111, and the platform 113 is used for placing the element 10 to be coated. Generally, the size of the element 10 to be coated is matched with the size of the groove 111 and the size of the platform 113, so that when the element 10 to be coated is placed on the platform 113, four sides of the element 10 to be coated are erected on the platform 113, the middle part of the element 10 to be coated is positioned above the groove 111, and a certain gap is formed between the middle part and the bottom of the groove 111, so that the surface of the element is not contacted with the main body 110, and the purpose of protecting the surface of the element 10 to be coated is achieved. In some embodiments of the present application, the main body 110 has a square structure, and the groove 111 also has a square groove 111. In other embodiments of the present application, the groove 111 may have a circular, polygonal, or other structure, and the shape of the groove 111 may be adjusted to match the shape of the element 10 to be coated. The shape and structure of the main body 110 can be adjusted as required to meet the requirement of coating.

The present application uses two compression bars 130 to fix the element 10 to be coated. The two pressing rods 130 of the present application act on both sides of the element to be coated 10, i.e., on both sides of the element to be coated 10 which is set up on the platform 113, so that the element to be coated 10 is clamped between the body and the pressing rods 130. The press rod 130 is detachably connected with the platform 113 through a connecting piece to achieve the purpose of fixing. It should be noted that two pressing rods 130 act on the left and right sides of the element to be coated 10, not on the upper and lower sides. This orientation is relative to the position of the element 10 to be coated during the pulling process. The reason is that the coating liquid coated on the surface of the element flows downwards under the action of gravity in the process of pulling the element out of the coating liquid, and if the top of the element has an irregular structure, the formation of the coating liquid is influenced, so that bubbles are generated on the coating in the pulling process, and the quality of the coating is influenced.

If the flatness of the platform 113 is not enough, the two sides of the element 10 to be coated will be deformed such as bent when receiving the same external force. Since the large diameter is thinner than the element structure, and is easily broken when receiving an uneven external force, flatness of the surface of the stage 113 is important. The research of the inventor of the present application shows that the mesa flatness of the mesa 113 is not more than 130 μm. This structure can largely avoid damage to the member to be coated 10.

The component 10 to be coated is generally rigid, and the body is generally rigid. The strut 130 is generally rigid in order to provide sufficient pressure, which makes all three structures in contact with each other rigid. When the element 10 to be coated is a large-diameter element with a high aspect ratio, it is not suitable to apply a large acting force to the element to avoid the element from cracking. This results in a gap between the element and the body, so that the coating solution enters between the element and the groove 111, and the protection of the surface of the element without coating is damaged.

In order to solve the technical problem, the sealing ring 120 is arranged on the table top of the platform 113 and surrounds the groove 111, and the sealing ring 120 is connected with the platform 113 in a sealing mode. The surface of the element to be coated 10, which is not required to be coated, is sealed by the seal ring 120. As an implementation manner, the table top of the platform 113 is provided with an annular groove 115 surrounding the groove 111, and the groove 115 is matched with the sealing ring 120. The slot 115 is close to the groove 111, so that when the component 10 to be coated is placed on the platform 113, four sides of the component are covered on the sealing ring 120 arranged in the slot 115, and the surface of the component which does not need to be coated is sealed. In some embodiments of the present application, the shape of the sealing ring 120 of the ring slot 115 matches the shape of the groove 111. In a possible implementation, the thickness of the sealing ring 120 is greater than the depth of the groove 115, i.e., the sealing ring 120 is exposed from the groove 115. Since the sealing ring 120 is made of a material that is easily deformable, such as rubber, when the pressing rod 130 presses the component, the sealing ring 120 is deformed by being pressed. The thickness of the sealing ring 120 is larger than the depth of the clamping groove 115, so that the sealing ring 120 can be in close contact with elements, and the sealing effect can be ensured to a greater extent.

Further, a silicone gasket 140 is disposed between the pressing rod 130 and the element 10 to be coated, so as to prevent the element from cracking due to direct contact between the element and the pressing rod 130 made of rigid material such as aluminum alloy during the fastening process.

As described above, the plunger 130 is detachably connected to the platform 113 while pressing the components. In some embodiments of the present application, the strut 130 is coupled to the table of the platform 113. This structure allows the pressing rod 130 and the table top to generate a force therebetween, which acts as a connecting force between the pressing rod 130 and the table top, and also clamps the components between the pressing rod 130 and the table 113. So that the element is firmly acted, and is not easy to loosen or slide in the process of pulling and coating the film. In other embodiments of the present application, the strut 130 may be coupled to a side of the platform 113.

In an implementation manner, the platform 113 includes a first mesa 1131, a second mesa 1132, a third mesa 1133 and a fourth mesa sequentially connected along the periphery of the groove 111, where the first mesa 1131 and the third mesa 1133 are the platforms 113 located at two sides of the component, respectively, the second mesa 1132 is the platform 113 located below the component, and the fourth mesa 1134 is the platform 113 located above the component.

The first platform surface 1131 and the third platform surface 1133 are both provided with at least two bosses 117 for being connected with the pressure bar 130, the bosses 117 are higher by a certain height relative to the platform surface of the platform 113, and the structure can improve the thickness of the joint of the platform 113 and the pressure bar 130, so as to improve the stability of the connection of the pressure bar 130 and the platform 113. At least two projections 117 provide increased definition of the position of the strut 130 and thus increased stability of the element fixation compared to one projection 117. In this embodiment, the number of the bosses 117 of the first mesa 1131 and the third mesa 1133 is four, and in other embodiments of the present application, the number of the bosses 117 provided on the first mesa 1131 and the third mesa 1133 may be adjusted as needed, such as three, four, and the like. In this embodiment, the pressing rod 130 is connected to the boss 117 by a bolt, that is, the pressing rod 130 and the boss 117 are both provided with corresponding screw holes or through holes, and the connection manner of the pressing rod 130 and the boss 117 is not limited in this application.

The second surface 1132 is provided with at least one protection pad 118, the protection pad 118 being adapted to protect the component at the bottom against falling off the platform 113 during the pulling process. Note that the height of the protection table 118 with respect to the stage 113 is smaller than the thickness of the member to be film-coated 10. I.e. the protection table 118 cannot project beyond the surface of the component when the component is placed on the platform 113. If the protection platform 118 protrudes from the element, the coating solution is blocked by the protection platform 118 when flowing downwards under the action of gravity in the process of pulling the coating film, so that a vortex is easily formed at the lower part of the element, and the coating solution formed on the surface of the element is not uniform. In this embodiment, the second surface 1132 is provided with a protection platform 118. The number and length of the protection stages 118 may be adjusted as needed, which is not limited in the present application.

The fourth table top is provided with a column table 119 as required. In this embodiment, the fourth table top is provided with a pillar 119, and the height of the pillar 119 relative to the platform 113 is smaller than the thickness of the element 10 to be coated. I.e. the abutment 119 cannot project beyond the surface of the element 10 to be coated when the element is placed on the platform 113. If the pillar 119 protrudes from the device, the pillar 119 is stained with the coating solution during the process of pulling and coating, and the coating solution flows to the surface of the device when flowing downwards under the action of gravity, thereby affecting the uniformity of the film layer on the surface of the device.

It should be noted that the dimensions defined by the projection 117, the protection table 118, and the column table 119 on the periphery of the card slot 115 are not smaller than the dimensions of the component, so as to facilitate the placement of the component 10 to be coated on the platform 113. According to the above description, the table top of the platform 113 according to the embodiment of the present application may be divided into the inner table top and the outer table top, and the inner and outer surfaces represent the positional relationship on the table top. The slot 115 is disposed on the inner table top, and the boss 117, the protection table 118, and the post 119 are disposed on the outer table top.

Referring to fig. 4 and 5, fig. 4 and 5 are respectively schematic structural diagrams of fig. 4 showing two viewing angles of the pressing rod 130 according to the embodiment of the present disclosure. The pressure rod 130 comprises a fastening part 131 and a fixing part 133, wherein the fastening part 131 is detachably connected with the platform 113, and the fixing part 133 is used for clamping and fixing the element to be coated 10 placed on the platform 113 in a matching way with the sealing ring 120. Referring to fig. 3, in some embodiments of the present application, the cross section of the pressing rod 130 is an L-shaped structure. The width of the fastening portion 131 matches the width of the outer mesa, and the width of the fixing portion 133 matches the width of the inner mesa. The fastening part 131 has a thickness greater than that of the fixing part 133. This is because when the element 10 to be coated is placed on the stage 113, the surface of the element rises above the boss 117, so that the fastening portion 131 and the fixing portion 133 do not have the same thickness. In other embodiments of the present disclosure, the structure of the pressing rod 130 may be adjusted as needed, for example, the pressing rod may be a strip-shaped structure, and the structure of the pressing rod is not limited in the present disclosure.

In order to reduce the contact area between the element 10 to be coated and the platform 113 and increase the protection area of the element 10 to be coated, the contact area between the element and the inner table surface is as small as possible. However, if the contact area between the device and the inner mesa is too small, the two sides of the device are subjected to a large pressure, which may cause damage such as cracking of the device. The ratio of the width of the rubber ring to the length of the longest side of the groove 111 is (1-1.5): 90. The structure can avoid the situation that the element is broken while the element protection area is enlarged as much as possible.

In some embodiments of the present application, the main body 110 has a size of 450mm (length) by 450mm (width) by 20mm (thickness), the groove 111 has a size of 420mm (length) by 420mm (width) by 10mm (thickness), the slot 115 has a width of 2-3mm and a depth of 1.5-2.8 mm. The height of the boss 117 is 8 mm.

In order to facilitate the use of the lifting coating film clamp 100, the lifting coating film clamp 100 further comprises a hanger 150, the hanger 150 is fixedly connected with the column 119, and the lifting coating film clamp 100 is hung on the coating device through the hanger 150. Since the pressing bar 130 is not provided on the fourth stage 1134, the coating film is dipped in the liquid by lifting the coating film jig 100 in a hanging manner when used.

It should be noted that, since the components are precision parts, in order to avoid that the connection between the parts such as welding is not fine during the processing of the drawing jig 100, the surface of the main body 110 has flaws to affect the coating effect. The main body 110 in the embodiment of the present application is integrally formed. In a possible implementation manner, the groove 111 is milled in the center of a plate with a proper size, the platform 113 is milled outwards by taking four sides of the groove 111 as reference, and the clamping groove 115 is milled on the platform 113. Bosses 117 are milled on the periphery of the clamping groove 115, and screw holes are formed in the bosses 117 on the two sides of the groove 111 to be matched with the pressing rod 130.

The working principle is as follows: the sealing ring 120 is clamped into the clamping groove 115, so that the sealing ring 120 is ensured to be in close contact with the clamping groove 115. The element 10 to be coated is placed on the platform 113, and the element 10 to be coated is completely contacted with the sealing ring 120, so that the surface of the element needing to be coated on one side faces upwards. The silicone gaskets 140 are respectively placed on two side edges of the surface of the element 10 to be coated, then the two pressing rods 130 are respectively pressed on the silicone gaskets 140 on two sides, and meanwhile, the fastening parts 131 of the pressing rods 130 are ensured to fall on the bosses 117 on the side edges of the main body 110, and the main body 110 and the pressing rods 130 are connected and fastened.

The lifting coating fixture 100 adopts two-side clamping, and no clamping higher than the surface of the element exists at the top and the bottom of the element, so that the uniformity of the film layer on the surface of the element is prevented from being influenced. The matching of the groove 111 and the sealing ring 120 is adopted to realize the single-side sealing of the large-caliber high-diameter-thickness ratio element. Different chemical films can be prepared on two different surfaces of the element through a drawing coating process, and the clear aperture of the element can almost reach the full aperture.

The application also provides a pulling coating equipment (not shown in the figure), which comprises a mechanical arm and a pulling coating clamp 100, wherein the pulling coating clamp 100 is hung on the mechanical arm, and the mechanical arm can drive the pulling coating clamp 100 to move. The lifting coating equipment can realize single-side sealing of the large-caliber high-diameter-thickness-ratio element and can prepare different chemical films on two different surfaces of the large-caliber high-diameter-thickness-ratio element.

The application also provides a pulling and coating method, and the pulling and coating equipment comprises the following steps:

the proper dip coating jig 100 is selected so that the height of the protection table 118 is smaller than the thickness of the member to be coated 10 and the height of the pedestal 119 is smaller than the thickness of the member to be coated 10. That is, when the member to be film-coated 10 is placed on the stage 113, neither the protection stand 118 nor the column stand 119 protrudes from the surface of the member to be film-coated 10.

The respective parts of the pull coating jig 100 are thoroughly cleaned.

The sealing ring 120 is clamped into the clamping groove 115, so that the sealing ring 120 is ensured to be in close contact with the clamping groove 115, and the surface of the sealing ring 120 exposed out of the clamping groove 115 is smooth.

The main body 110 is horizontally placed on an operation table, the element 10 to be coated is placed on a platform 113, the element 10 to be coated is completely contacted with the sealing ring 120, and the surface of the element needing single-side coating is ensured to be upward. After the components are placed, whether the sealing ring 120 in the clamping groove 115 is extruded out of the clamping groove 115 is checked, if the sealing ring 120 is extruded out, the sealing ring 120 is installed again, and the components are placed again.

Two silica gel gaskets 140 are respectively placed on two side edges of the surface of the element to be coated 10, and then the two pressing rods 130 are pressed on the silica gel gaskets 140, and meanwhile, the fastening parts 131 of the pressing rods 130 are ensured to fall on the bosses 117 on the side edges of the main body 110. Checking whether the through hole of the pressing rod 130 is aligned with the screw hole of the boss 117 on the main body 110, and fastening the main body 110 and the pressing rod 130 by using a screw. In the screwing process, a torque wrench is needed to symmetrically and slowly screw and fix the screw to complete component clamping.

And (3) hanging the clamped element and the lifting coating clamp 100 on a mechanical arm of a lifting coating device through a hanging frame 150, immersing the lifting coating clamp 100 and the clamp into a coating liquid by controlling the movement direction and speed of the mechanical arm, pulling out at a certain speed, standing until a solvent in the coating liquid on the surface of the coating element 10 is volatilized, and forming a film layer on the surface of the element to finish the preparation of the single-sided chemical film.

The method for coating by pulling is simple and convenient to operate, and different chemical films can be prepared on two different surfaces of the large-caliber high-diameter-thickness ratio element.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A lifting film coating jig is characterized by comprising:

the film coating device comprises a main body, a film coating layer and a film coating layer, wherein the main body is provided with a groove and a platform surrounding the groove, and the platform is used for placing an element to be coated;

the sealing ring is arranged around the groove in a surrounding mode and is connected with the platform in a sealing mode; and

the two pressure rods can be detachably connected with the platforms on the two sides of the groove respectively, are configured to act on the two sides of the element to be coated and are connected with the platforms so as to enable the element to be coated, placed on the platforms, to be tightly attached to the sealing ring.

2. The lift-draw film clamp of claim 1, wherein the plateau has a plateau flatness of no more than 130 μm.

3. The lifting film coating clamp according to claim 1, wherein the platform comprises a first table surface, a second table surface, a third table surface and a fourth table surface which are sequentially connected along the periphery of the groove, each of the first table surface and the third table surface is provided with at least two bosses which are detachably connected with the pressure rod, and the bosses are positioned on the periphery of the sealing ring.

4. The lift-draw film clamp of claim 3, wherein the second table top is provided with at least one protection table located at the periphery of the seal ring to limit the element to be film from slipping off the lift-draw film clamp.

5. The lift-draw film clamp of claim 3, wherein the fourth table is provided with a pedestal, the pedestal being located at the periphery of the seal ring.

6. The lift-draw film coating fixture of claim 5, further comprising a hanger, wherein the hanger is fixedly connected to the pylon.

7. The lift-draw film clamp of claim 1, wherein the pressure bar comprises a fastening portion for detachably connecting with the platform and a fixing portion for clamping and fixing the element to be film placed on the platform in cooperation with the seal ring.

8. The lift-draw film coating jig of claim 7, wherein the cross-section of the pressing rod is an L-shaped structure.

9. The lift-draw film coating fixture of claim 1, wherein the ratio of the width of the seal ring to the length of the longest side of the groove is (1-1.5): 90.

10. A dip-coating apparatus comprising a robot arm and the dip-coating jig according to any one of claims 1 to 9, the dip-coating jig being hung from the robot arm, the robot arm being capable of moving the dip-coating jig.

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