Tensioning device and coating device

Abstract

The utility model provides a tensioning device and a coating device. The tensioning device comprises a frame assembly, the frame assembly comprises a fixed part and a movable part, the movable part is arranged on one side of the fixed part and is adjustably arranged relative to the fixed part, a tensioning area is formed between the movable part and the fixed part, and the size of the tensioning area can be adjusted by adjusting the movable part; the side, away from the movable part, of the fixed part is connected with one side of a to-be-installed piece, and the movable part is used for being connected with the other side of the to-be-installed piece. And the crimping parts are arranged in the circumferential direction of the frame assembly, and a space used for clamping a part to be installed is formed between the crimping parts and the frame assembly. The steel mesh tensioning device solves the problem that the tensioning degree of a steel mesh coated with thermal grease in the prior art cannot be freely adjusted when the steel mesh is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to a radiator production technical field, specifically, a tensioning device and coating device. BACKGROUND

[0002] In the assembling process of the electric appliance box and the radiator, the quality of the heat dissipation paste for fixing the position of the component is the key step to improve the heat dissipation performance of the electronic equipment and prolong the service life. The traditional coating mode relies on manual operation, that is, the worker places the radiator on the fixed seat, manually covers the steel mesh and uses the scraping piece to coat the heat dissipation paste. This manual operation method not only has extremely low degree of automation, but also has great labor intensity of the worker and poor working environment, thereby leading to low production efficiency. In addition, the manual coating can not guarantee the thickness consistency of the heat dissipation paste, and problems such as uneven thickness and wave lines are easily generated in the coating process, which directly affects the heat dissipation effect and the qualified rate of the product. Moreover, the steel mesh is installed on the coating machine when coating the heat dissipation paste, the installation mode is single, the structure is complex, and the degree of tensioning the steel mesh cannot be freely controlled when the steel mesh is tensioned.

[0003] Therefore, it is known from the above that the existing technology has the problem that the tensioning degree of the steel mesh for coating the heat dissipation paste cannot be freely adjusted when in use. SUMMARY

[0004] The main purpose of the utility model is to provide a tensioning device and a coating device to solve the problem that the tensioning degree of the steel mesh for coating the heat dissipation paste cannot be freely adjusted when in use in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a tensioning device is provided, which comprises: a frame assembly, the frame assembly comprises a fixed part and a movable part, the movable part is arranged on one side of the fixed part and is adjustably arranged relative to the fixed part, and a tensioning area is formed between the movable part and the fixed part, the movable part can adjust the size of the tensioning area, one side of the fixed part away from the movable part is connected with one side of a to-be-installed piece, and the movable part is used for connecting the other side of the to-be-installed piece; a pressure connecting piece, the pressure connecting piece is arranged around the circumference of the frame assembly, and a space for clamping the to-be-installed piece is formed between the pressure connecting piece and the frame assembly.

[0006] Further, the tensioning device further comprises a sealing piece, the sealing piece extends around the circumference of the frame assembly and is located between the pressure connecting piece and the frame assembly, and the sealing piece is used for sealing the assembly gap between the frame assembly and the pressure connecting piece.

[0007] Further, the fixed part is in the form of a frame and comprises oppositely arranged first and second sides, and the movable part is movably connected with the second side; and / or the first and / or second side is provided with a mounting position for fixing the pressure connecting piece.

[0008] Further, the pressing member is in a frame shape, and a set of opposite two sides of the pressing member are arranged corresponding to the first side and the second side of the fixed part respectively.

[0009] Further, the tensioning device further comprises a guide member, the guide member is connected with the frame assembly, and the movable part has a hole or a slot for avoiding the guide member.

[0010] Further, the movable part is in a strip shape and is arranged along the second side of the fixed part, and the distance between the movable part and the second side of the fixed part is arranged adjustably; and / or the guide member is detachably connected with the frame assembly.

[0011] Further, the guide member is a plurality of guide members, the plurality of guide members are arranged on the frame assembly at intervals, and the guide member is bonded or screw-connected with the frame assembly.

[0012] Further, the tensioning device further comprises an adjusting member, the adjusting member is connected with one of the movable part and the fixed part, and the adjusting member is abutted and limited with the other one of the movable part and the fixed part.

[0013] Further, the adjusting member has an abutting end and an operating end, the operating end is located on the side of the movable part away from the fixed part, and the abutting end is arranged in abutment with the fixed part through the movable part.

[0014] Further, the movable part has a first threaded hole, the adjusting member has a threaded segment matched with the first threaded hole; and / or the tensioning device further comprises a limiting structure, the limiting structure is connected on the movable part, the limiting structure has a second threaded hole, and the adjusting member has a threaded segment matched with the second threaded hole.

[0015] According to another aspect of the utility model, provide a kind of coating device, comprising: above-mentioned tensioning device;Steel net, steel net is the piece to be installed, and at least a part of steel net is connected with the fixed part of tensioning device, and at least another part of steel net is connected with the movable part of tensioning device.

[0016] Further, the steel net has a plurality of long holes, and the extension direction of the long hole is arranged perpendicularly between the arrangement direction of the plurality of long holes.

[0017] The technical scheme of the utility model discloses a tensioning device, which comprises a frame assembly and a pressure joint, the frame assembly comprises a fixed part and a movable part, the movable part is arranged on one side of the fixed part and is adjustably arranged relative to the fixed part, a tensioning area is formed between the movable part and the fixed part, the size of the tensioning area can be adjusted by adjusting the movable part, one side of the fixed part away from the movable part is connected with one side of a to-be-installed piece, the movable part is used for being connected with the other side of the to-be-installed piece, the pressure joint is arranged around the frame assembly, a space for clamping the to-be-installed piece is formed between the pressure joint and the frame assembly, the two ends of the to-be-installed piece are respectively installed on the fixed part and the movable part, and the to-be-installed piece is crimped by the pressure joint, so that the to-be-installed piece is accommodated in the tensioning area, the tensioning of the to-be-installed piece can be realized by moving the movable part along the direction away from the fixed part to drive the two ends of the to-be-installed piece to move relatively, the tensioning degree of the to-be-installed piece can be adjusted freely, and the problem that the tensioning degree of the steel mesh coated with the heat dissipation paste cannot be freely adjusted in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description, explain the application. In the drawings:

[0019] Figure 1 Fig. 1 shows a structure schematic view of a tensioning device in an embodiment of the utility model from one angle;

[0020] Figure 2 Fig. 2 shows a structure schematic view of the tensioning device in the embodiment of the utility model from another angle;

[0021] Figure 3 Fig. 3 shows a structure schematic view of the tensioning device in the embodiment of the utility model from another angle;

[0022] Figure 4 Fig. 4 shows a structure schematic view of the tensioning device in the embodiment of the utility model from another angle;

[0023] Figure 5 Fig. 5 shows a structure schematic view of a steel mesh in the embodiment of the utility model.

[0024] Among them, the above drawing includes the following sign:

[0025] 10, frame assembly; 11, fixed part; 12, movable part; 20, crimping piece; 30, sealing piece; 40, guide piece; 50, adjusting piece; 51, operation end; 60, limiting structure; 70, steel mesh; 71, long hole; 72, connecting hole; 80, fastener; 90, clamping structure. DETAILED DESCRIPTION

[0026] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In order to solve the problem that the tension degree of the steel mesh coated with heat dissipation paste cannot be freely adjusted in use in the prior art, the present application provides a tensioning device and a coating device.

[0028] As shown in Figures 1 to 4 , the tensioning device comprises a frame assembly 10 and a crimping piece 20. The frame assembly 10 comprises a fixed part 11 and a movable part 12. The movable part 12 is arranged on one side of the fixed part 11 and adjustably arranged relative to the fixed part 11. A tensioning area is formed between the movable part 12 and the fixed part 11. The size of the tensioning area can be adjusted by adjusting the movable part 12. The side of the fixed part 11 away from the movable part 12 is connected with one side of a to-be-installed piece. The movable part 12 is used to connect with the other side of the to-be-installed piece. The crimping piece 20 is arranged around the frame assembly 10. A space for clamping the to-be-installed piece is formed between the crimping piece 20 and the frame assembly 10.

[0029] By mounting the two ends of the to-be-installed piece on the fixed part 11 and the movable part 12 respectively and crimping the to-be-installed piece by the crimping piece 20, the to-be-installed piece is accommodated in the tensioning area. Since the movable part 12 is arranged on one side of the fixed part 11 and the distance between the movable part 12 and the fixed part 11 can be adjusted, the tensioning of the to-be-installed piece can be realized by moving the movable part 12 in the direction away from the fixed part 11 to drive the relative movement of the two ends of the to-be-installed piece. Thus, the tensioning degree of the to-be-installed piece can be adjusted arbitrarily.

[0030] As shown in Figure 2 , the tensioning device further comprises a sealing piece 30. The sealing piece 30 extends around the frame assembly 10 and is located between the crimping piece 20 and the frame assembly 10. The sealing piece 30 is used to seal the assembly gap between the frame assembly 10 and the crimping piece 20.

[0031] Specifically, the sealing member 30 is arranged around the fixed part 11 in a circumferential direction, and the sealing member 30 is made of a deformation material. When the compression member 20 is connected and fastened with the frame assembly 10 by the fastener 80, and the compression member 20 and the frame assembly 10 are clamped together to hold the to-be-mounted member, the sealing member 30 deforms, so as to avoid the gap between the fixed part 11 and the compression member 20. When the tensioning device is used, the component to be coated with the heat dissipation paste is placed in the tensioning area of the to-be-mounted member, and then the to-be-mounted member is mounted, so as to realize that the to-be-mounted member covers the component and the heat dissipation paste is coated. The arrangement of the sealing member 30 can prevent the heat dissipation paste from flowing out of the gap between the compression member 20 and the fixed part 11, thereby avoiding the waste of the heat dissipation paste, and also ensuring the cleanliness of the processing environment.

[0032] Further, in actual application, the use of the sealing member 30 significantly improves the reliability of the device and the accuracy of the production process, avoids leakage, vibration and positioning errors caused by the gap, and significantly improves the performance and aesthetics of the product, reduces the defective rate in the production process, and provides strong support for the continuous and stable operation of the production line.

[0033] In the embodiment, the fixed part 11 is in a frame shape and includes oppositely arranged first and second sides, and the movable part 12 is movably connected to the second side; and / or the first and / or second side is provided with a mounting position for fixing the compression member 20.

[0034] Specifically, the fixed part 11 is a rectangular frame structure, and the sealing member 30 is also a rectangular frame structure. The first and second sides of the fixed part 11 are provided with threaded holes, and the compression member 20 is provided with corresponding avoiding holes. The fastener 80 passes through the avoiding holes and is connected with the threaded holes. One end of the fastener 80 presses the compression member 20, and the other end has an external thread matched with the threaded hole. Optionally, the fastener 80 is a screw. Of course, the fastener 80 can be arranged on one side of the frame assembly 10, and a locking member is arranged on the other side to lock the fastener 80 to realize the cooperation between the compression member 20 and the frame assembly 10.

[0035] In the embodiment, the compression member 20 is in a frame shape, and a group of two opposite sides of the compression member 20 correspond to the first and second sides of the fixed part 11, respectively.

[0036] Specifically, the compression member 20 is matched with the fixed part 11, the tensioning device is used to tension the steel mesh 70 of the coating device, the compression member 20 and the fixed part 11 are both frame structures, and the corresponding tensioning area is also rectangular, so that the heat dissipation paste contained in the tensioning area cannot overflow.

[0037] In another alternative embodiment of the utility model, in addition to the two sides opposite to the first side and the second side of the crimping piece 20 being provided with the avoiding holes, the other two sides of the crimping piece 20 are also provided with the avoiding holes, and the corresponding threaded holes are provided on the fixed part 11, that is, in addition to the first side and the second side of the crimping piece 20 being connected with the fixed part 11, the other two sides of the crimping piece 20 are also connected with the fixed part 11, so that the connecting effect of the crimping piece 20 and the fixed part 11 is improved.

[0038] In another embodiment of the utility model not shown in the figure, the crimping piece 20 is of L-shaped structure, and two crimping pieces 20 are correspondingly arranged with the fixed part 11 to realize clamping the steel mesh 70.

[0039] As shown in Figure 1 and Figure 4 , the tensioning device further comprises a guide piece 40, the guide piece 40 is connected with the frame assembly 10, and the movable part 12 has a hole or a groove for avoiding the guide piece 40.

[0040] Specifically, the hole for avoiding the guide piece 40 is arranged on the movable part 12, and the guide piece 40 is connected with the fixed part 11 by penetrating the movable part 12. The guide piece 40 is in clearance fit with the hole on the movable part 12, so that the movable part 12 is facilitated to slide along the guide piece 40 to adjust the distance between the movable part 12 and the fixed part. Optionally, one end of the guide piece 40 is a stop end, a stop ring is arranged in the hole of the movable part 12, and the main body part of the guide piece 40 can penetrate the stop ring. When the movable part 12 moves too far, the stop end of the guide piece 40 is stopped by the stop ring, so that the movable part 12 is prevented from moving too far to cause the steel mesh 70 to be too tightly tensioned and be damaged. That is, the maximum distance between the movable part 12 and the fixed part 11 is determined by the length of the guide piece 40.

[0041] In the embodiment, the movable part 12 is in long strip shape and is arranged along the second side of the fixed part 11, and the distance between the movable part 12 and the second side of the fixed part 11 is adjustably arranged; and / or the guide piece 40 is detachably connected with the frame assembly 10.

[0042] Specifically, the movable part 12 is in long strip structure, and the length of the movable part 12 is the same as the length of the second side. The guide piece 40 is detachably connected with the fixed part 11. The detachable connection mode can facilitate timely maintenance and replacement of the guide piece 40, and of course the connection mode between the guide piece and the fixed part 11 is not necessarily the above-mentioned connection mode.

[0043] In another alternative embodiment of the utility model, the guide piece 40 is integrally formed with the fixed part 11, and when the movable part 12 is installed, the movable part 12 is arranged along the guide piece 40 to be close to the fixed part 11.

[0044] In the embodiment, the guide 40 is a plurality of, the plurality of guides 40 are arranged at intervals on the frame assembly 10, and the guide 40 is bonded or threaded with the frame assembly 10.

[0045] Specifically, the guide 40 is a pin shaft, the fixed part 11 is provided with a plurality of interval accommodating grooves, the plurality of guides 40 are arranged correspondingly with the plurality of accommodating grooves, and the guide 40 is interference fit with the accommodating groove. In order to further improve the connection effect of the guide 40 and the fixed part 11, the guide 40 and the accommodating groove are also filled with thread glue. Of course, the guide 40 can also have a threaded segment at one end, and the inner wall of the accommodating groove is provided with an internal thread.

[0046] As shown in Figures 1 to 5 The tensioning device also includes an adjusting piece 50, the adjusting piece 50 is connected with one of the movable part 12 and the fixed part 11, and the adjusting piece 50 abuts and limits the other one of the movable part 12 and the fixed part 11.

[0047] Specifically, the adjusting piece 50 is connected with the movable part 12 and partially extends into the fixed part 11 to realize abutting and limiting. By operating the adjusting piece 50, the distance between the movable part 12 and the fixed part 11 is adjusted.

[0048] As shown in Figures 1 to 4 The adjusting piece 50 has an abutting end and an operating end 51, the operating end 51 is located on the side of the movable part 12 away from the fixed part 11, and the abutting end abuts and is arranged through the movable part 12 and the fixed part 11.

[0049] Specifically, the abutting end of the adjusting piece 50 abuts with the fixed part 11, when it is needed to adjust the distance between the movable part 12 and the fixed part 11, only the operating end 51 needs to be adjusted, so that the steel mesh 70 can be tensioned, and according to the operation time of the operating end 51, the distance between the movable part 12 and the fixed part 11 is controlled.

[0050] In the embodiment, the movable part 12 has a first threaded hole, the adjusting piece 50 has a threaded segment matched with the first threaded hole; and / or the tensioning device further includes a limiting structure 60, the limiting structure 60 is connected on the movable part 12, the limiting structure 60 has a second threaded hole, and the adjusting piece 50 has a threaded segment matched with the second threaded hole.

[0051] Specifically, the threaded section on the adjusting member 50 is matched with the first threaded hole of the movable part 12, when it is needed to adjust the distance between the movable part 12 and the fixed part 11, only need to use the wrench to clamp the operation end 51 and rotate the adjusting member 50, since the adjusting member 50 and the movable part 12 are matched with each other in the threaded mode, thus the movable part 12 is moved along the axis of the adjusting member 50 by a predetermined distance. Meanwhile, the limiting structure 60 is also matched with the adjusting member 50 in the threaded mode, the limiting structure 60 is used to limit the adjusting member 50, thus preventing the adjusting member 50 from moving relative to the movable part 12, and preventing the tensioning degree of the steel net 70 from being loosened.

[0052] The utility model further provides a kind of coating device. Coating device includes the above-mentioned tensioning device and steel net 70. Steel net 70 is to be installed piece, and at least a part of steel net 70 is connected with the fixed part 11 of tensioning device, and at least another part of steel net 70 is connected with the movable part 12 of tensioning device.

[0053] Specifically, the tensioning device further includes clamping structure 90, and the clamping structure 90 is arranged on the fixed part 11. The tensioning device is connected with the coating device through the clamping structure 90, so as to limit the fixed part 11.

[0054] In the embodiment, the steel net 70 has a plurality of long holes 71, and the extension direction of the long holes 71 is perpendicular to the arrangement direction of the plurality of long holes 71.

[0055] Specifically, the steel net 70 is provided with a connecting hole 72 at both ends, and the connecting hole 72 is correspondingly arranged on the threaded hole of the fixed part 11. The fastener 80 passes through the connecting hole 72 and the threaded hole in sequence to limit the both ends of the steel net 70. The steel net 70 is provided with a plurality of long holes 71 arranged at intervals at the position close to the movable part 12. The extension direction of the long holes 71 is parallel to the moving direction of the movable part 12. The long holes 71 are used to limit the steel net 70. Meanwhile, the arrangement of the long holes 71 can also avoid the steel net 70 from being partially elongated and tensioned.

[0056] The technical scheme is applied to the utility model, the tensioning device includes frame assembly 10 and pressure joint 20, frame assembly 10 includes fixed part 11 and movable part 12, movable part 12 is arranged on the side of fixed part 11 and is adjustably arranged relative to fixed part 11, and the movable part 12 and fixed part 11 form a tensioning area, the size of the tensioning area can be adjusted by adjusting movable part 12, the side of fixed part 11 away from movable part 12 is connected with the side of the to-be-installed piece, movable part 12 is used for being connected with the other side of the to-be-installed piece, pressure joint 20 is arranged around the circumference of frame assembly 10, and the space for clamping the to-be-installed piece is formed between pressure joint 20 and frame assembly 10, the two ends of the to-be-installed piece are respectively installed on fixed part 11 and movable part 12, and the to-be-installed piece is crimped by using pressure joint 20, the to-be-installed piece is accommodated in the tensioning area, the tensioning of the to-be-installed piece can be realized by moving movable part 12 along the direction away from fixed part 11 to drive the relative movement of the two ends of the to-be-installed piece, so that the tensioning degree of the to-be-installed piece can be adjusted arbitrarily.

[0057] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0058] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application, unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of providing an understanding of the example embodiments. Technical, methods, and apparatuses known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as if the technical, methods, and apparatuses were described in their entirety herein. In all examples shown and discussed herein, any specific values are to be interpreted as illustrative only and not as a limitation. Thus, other examples of example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several figures, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures.

[0059] In the description of the utility model, it is necessary to understand that the orientation words such as '' front, back, top, bottom, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship usually based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, under the circumstances without making the opposite statement, these orientation words do not indicate and imply the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the protection scope of the utility model, the orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0060] For the convenience of description, spatial relative terms such as '' above'', '' above'', '' upper surface'', '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the exemplary term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned 90 degrees or in other orientations in other different ways, and the spatial relative description used here is interpreted accordingly.

[0061] In addition, it should be noted that the use of '' first'', '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore can not be understood as the limitation of the protection scope of the utility model.

[0062] It should be noted that the terms used here are only for the description of specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms '' including '' and / or '' comprising '' are used in the specification, it means that the features, steps, operations, devices, components and / or their combinations exist.

[0063] It should be noted that the terms '' first'', '' second'' and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0064] The preferred embodiments of the present application have been described above with the preferred embodiments, but are not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tensioning device, characterized in that The tensioning device comprises: a frame assembly (10) comprising a fixed part (11) and a movable part (12) arranged on one side of the fixed part (11) and adjustably arranged relative to the fixed part (11), and a tensioning area formed between the movable part (12) and the fixed part (11), the size of the tensioning area being adjustable by adjusting the movable part (12), one side of the fixed part (11) away from the movable part (12) being connected to one side of a to-be-installed member, and the movable part (12) being used to be connected to the other side of the to-be-installed member; a pressing member (20) arranged around the frame assembly (10) in a circumferential direction, and a space for clamping the to-be-installed member being formed between the pressing member (20) and the frame assembly (10).

2. The tensioning device of claim 1, wherein, The tensioning device further comprises a sealing member (30) extending around the frame assembly (10) in a circumferential direction and located between the pressing member (20) and the frame assembly (10), the sealing member (30) being used to seal an assembly gap between the frame assembly (10) and the pressing member (20).

3. The tensioning device of claim 1, wherein, The fixed part (11) is in a frame shape and comprises oppositely arranged first and second sides, the movable part (12) is movably connected to the second side; and / or the first and / or second side is provided with a mounting position for fixing the pressing member (20); the pressing member (20) is in a frame shape, and a pair of opposite sides of the pressing member (20) are arranged corresponding to the first and second sides of the fixed part (11), respectively.

4. The tensioning device of claim 1, wherein, The tensioning device further comprises a guide member (40) connected to the frame assembly (10), and the movable part (12) has a hole or a groove for avoiding the guide member (40).

5. The tensioning device according to claim 4, wherein the movable part (12) is in a strip shape and is arranged along the second side of the fixed part (11) in an extendable manner, and the distance between the movable part (12) and the second side of the fixed part (11) is arranged in an adjustable manner; and / or the guide member (40) is detachably connected to the frame assembly (10).

6. The tensioning device of claim 4, wherein, The guide member (40) is in a plurality, and the guide members (40) are arranged on the frame assembly (10) in a spaced manner, and the guide members (40) are adhesively bonded or threadedly connected to the frame assembly (10).

7. A tensioning device according to any one of claims 1 to 6, characterized in that The tensioning device further comprises an adjusting member (50) connected to one of the movable part (12) and the fixed part (11), and the adjusting member (50) is in abutment with the other one of the movable part (12) and the fixed part (11) for limiting.

8. A tensioning device according to claim 7, characterized in that The adjusting member (50) has an abutting end and an operating end (51), the operating end (51) is located on the side of the movable part (12) away from the fixed part (11), and the abutting end is arranged in abutment with the fixed part (11) through the movable part (12).

9. The tensioning device according to claim 8, characterized in that, The movable part (12) has a first threaded hole, and the adjusting member (50) has a threaded section matched with the first threaded hole; and / or The tensioning device further comprises a limiting structure (60), the limiting structure (60) is connected to the movable part (12), the limiting structure (60) has a second threaded hole, and the adjusting member (50) has a threaded section matched with the second threaded hole.

10. A coating apparatus characterized by, Comprise: The tensioning device according to any one of claims 1 to 9; A steel mesh (70), the steel mesh (70) is a to-be-installed member, at least a part of the steel mesh (70) is connected with the fixed part (11) of the tensioning device, at least another part of the steel mesh (70) is connected with the movable part (12) of the tensioning device, the steel mesh (70) has a plurality of long-hole (71), and the extension direction of the long-hole (71) is perpendicular to the arrangement direction of the plurality of long-hole (71).

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