UV finish paint bubble removing device

Abstract

The utility model relates to the technical field of UV paint, and discloses a UV finish paint bubble removing device which comprises a material placing plate, the inner surface of the material placing plate is in sliding connection with a baffle plate block, the lower surface of the baffle plate block is fixedly connected with a pressure spring frame, the inner surface of the pressure spring frame is in sliding connection with a rebound rod, and one end, close to the baffle plate block, of the rebound rod is fixedly connected with the lower surface of the material placing plate. An inner circulation plate is fixedly connected to the outer surface of the side, away from the rebound rod, of the containing plate. According to the UV finish paint bubble removing device, in the rotating process of a deflection disc, a protruding key on the deflection disc pulls a moving column to drive an extension rod to slide in a reciprocating mode, so that the extension rod drives an opposite-extrusion block below a piece fixing plate to slide, the inclined face of the opposite-extrusion block is pushed away towards the two sides by a material plate, and the opposite-extrusion block clamps the material plate abutting against a blocking plate block in the opposite-extrusion block; and when the extension rod retracts, the material plate clamped below the extension rod is driven to automatically slide to the position below the hot air fan, and the purpose of automatically feeding the material plate needing bubble removal is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of UV paint, in particular to a device for removing bubbles from UV topcoat. Background Technique

[0002] Another explanation of UV paint is ultraviolet curable coating, abbreviated as UV paint, which is named after the curing method of the paint. It is a kind of coating that can be quickly cured into a film within a few seconds under the irradiation of ultraviolet light. The main characteristics of UV paint are: after being cured by strong ultraviolet light, the color is stable and lasts forever.

[0003] In the prior art, due to its own process or temperature problems during the construction process of some UV paint surfaces, a large number of bubbles will be generated on the outer surface of the UV paint after spraying. And if the material board is placed into the defoaming device manually when the UV paint surface is not dry, it may accidentally contaminate fingerprints on the paint surface, affecting the overall effect of the paint surface. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a device for removing bubbles from UV topcoat, which has the advantages of automatically placing the material board that needs to remove bubbles into the defoaming device, and at the same time removing the bubbles in the UV paint surface through non-contact hot air and the shaking of the device itself. It solves the problems that due to its own process or temperature problems during the construction process of some UV paint surfaces, a large number of bubbles will be generated on the outer surface of the UV paint after spraying, and if the material board is placed into the defoaming device manually when the UV paint surface is not dry, it may accidentally contaminate fingerprints on the paint surface, affecting the overall effect of the paint surface.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present utility model provides the following technical solution: A UV topcoat bubble removal device, including a material placement plate, the inner surface of the material placement plate is slidably connected with a blocking plate, the lower surface of the blocking plate is fixedly connected with a compression spring frame, the inner surface of the compression spring frame is slidably connected with a rebound rod, one end of the rebound rod close to the blocking plate is fixedly connected with the lower surface of the material placement plate, the outer surface of the material placement plate away from the rebound rod is fixedly connected with an inner circulation plate, the outer surface of the inner circulation plate away from the material placement plate is fixedly connected with a sealing top plate, the inner surface of the sealing top plate is rotatably connected with a main transmission rod, the outer circumferential surface of the main transmission rod is fixedly connected with a hot air fan, the outer circumferential surface of the main transmission rod is fixedly connected with an eccentric turntable, one end of the eccentric turntable away from the sealing top plate is rotatably connected with a synchronous moving column, one end of the synchronous moving column away from the eccentric turntable is rotatably connected with an extension rod, the outer circumferential surface of the extension rod is slidably connected with the sealing top plate, one end of the extension rod close to the material placement plate is fixedly connected with a fixing plate, the outer surface of the fixing plate close to the material placement plate is fixedly connected with a pressure receiving plate, the inner surface of the pressure receiving plate is slidably connected with an inner extrusion rod, the outer circumferential surface of the inner extrusion rod is slidably connected with the inner circulation plate, one end of the inner extrusion rod away from the inner circulation plate is fixedly connected with an opposing extrusion block, the outer surface of the opposing extrusion block away from the material placement plate is slidably connected with the fixing plate, the outer surface of the opposing extrusion block close to the inner extrusion rod is fixedly connected with a double tension spring, and one end of the double tension spring away from the opposing extrusion block is fixedly connected with the pressure receiving plate.

[0008] In some embodiments, the material placement plate is a rectangular plate, the upper surface of the rectangular plate is fixedly connected with an inner circulation plate, the upper surface of the rectangular plate is provided with a square hole, the inner surface of the square hole is slidably connected with a blocking plate, and the lower surface of the rectangular plate is fixedly connected with a rebound rod.

[0009] In some embodiments, the blocking plate is a triangular block, the outer surface of the triangular block is slidably connected with the material placement plate, the outer surface of the triangular block away from the opposing extrusion block is an inclined surface, the lower surface of the triangular block is fixedly connected with a square block, the outer surface of the square block is slidably connected with the material placement plate, and the outer surface of the square block away from the triangular block is fixedly connected with a compression spring frame.

[0010] In some embodiments, the rebound rod is a circular rod, the upper end of the circular rod is fixedly connected with the material placement plate, the outer circumferential surface of the circular rod is slidably connected with the compression spring frame, the lower end of the circular rod is fixedly connected with a circular disc, the upper surface of the circular disc is fixedly connected with a spring, the inner surface of the spring is slidably connected with the circular rod, and one end of the spring away from the circular disc is fixedly connected with the compression spring frame.

[0011] In some embodiments, the inner circulation plate is two rectangular plates, the lower surface of the rectangular plate is fixedly connected with the material placement plate, the outer surface of the rectangular plate away from the material placement plate is fixedly connected with a sealing top plate, a rectangular groove is provided at one end of the rectangular plate close to the blocking plate, and the inner surface of the rectangular groove is slidably connected with an inner extrusion rod.

[0012] In some embodiments, the sealing top plate is a rectangular plate. An inner circulation plate is fixedly connected to the outer surface of the rectangular plate on the side close to the material placing plate. A circular hole is provided on the outer surface of the rectangular plate on the side close to the material placing plate. A main transmission rod is rotatably connected to the inner surface of the circular hole. A rounded rectangular hole is provided on the outer surface of the rectangular plate on the side close to the material placing plate. An extension rod is slidably connected to the inner surface of the rounded rectangular hole.

[0013] In some embodiments, the offset turntable is a circular plate. A circular hole is provided at the center position of the circular plate. A main transmission rod is fixedly connected to the inner surface of the circular hole. A circular convex key is provided on the outer surface of the circular plate away from the sealing top plate. A synchronous moving column is rotatably connected to the outer circumferential surface of the convex key.

[0014] In some embodiments, the squeezing blocks are two right trapezoidal blocks. The outer surface of the right trapezoidal block facing the blocking plate is an inclined surface. An inner squeezing rod is fixedly connected to the outer surface of the right trapezoidal block on the side close to the inner circulation plate. A double pull spring is fixedly connected to the outer surface of the right trapezoidal block on the side close to the inner circulation plate.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides a UV topcoat bubble removal device, which has the following beneficial effects:

[0017] 1. For this UV topcoat bubble removal device, during the rotation of the offset turntable, the convex key on it pulls the synchronous moving column to drive the extension rod to slide reciprocally. As a result, the extension rod drives the squeezing blocks under the fixing plate to slide. The inclined surfaces of the squeezing blocks are pushed to both sides by the material plate, so that the squeezing blocks clamp the material plate blocked by the blocking plate. When the extension rod retracts, it drives the clamped material plate below it to automatically slide under the hot air fan, achieving the purpose of automatically feeding the material plate that needs to be defoamed.

[0018] 2. For this UV topcoat bubble removal device, during the rotation of the offset turntable, the main transmission rod inside it is driven to rotate. Consequently, during the rotation of the main transmission rod, the hot air fan is driven to rotate. Thus, hot air is generated during the rotation of the hot air fan, and the hot air blows on the material plate below it, achieving the purpose of automatically removing the bubbles in the UV topcoat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the sealing top plate of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the blocking plate of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the material placing plate of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the squeezing block of the present utility model.

[0023] In the figure:

[0024] Material placing plate 1; Blocking plate 2; Pressure spring holder 3; Rebound rod 4; Inner circulation plate 5; Sealing top plate 6; Main transmission rod 7; Hot air fan 8; Deflecting turntable 9; Synchronous moving column 10; Extension rod 11; Firmware plate 12; Pressure receiving plate 13; Inner extrusion rod 14; Opposing extrusion block 15; Double tension spring 16. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.

[0026] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0027] In the present application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0029] When in use, the UV topcoat bubble removal device can automatically place the material plate that needs to remove bubbles into the defoaming device, and at the same time, the bubbles in the UV paint surface can be removed by non-contact hot air and the shaking of the device itself.

[0030] In related technologies, due to its own process or temperature problems during the construction process of some UV paint surfaces, a large number of bubbles will be generated on the outer surface after the UV paint is sprayed. And if the material plate is placed into the defoaming device when the UV paint surface is not dry manually, it may cause fingerprints to be accidentally stained on the paint surface, affecting the overall effect of the paint surface.

[0031] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a UV topcoat bubble removal device. When it is needed, it is only necessary to push the material plate sprayed with paint toward the inclined surface of the blocking plate 2, so that the material pushes the blocking plate 2 so that the material plate pushes the blocking plate 2 down and moves in the direction of the extrusion block 15. When one end of the material plate completely passes through the blocking plate 2, the blocking plate 2 is lifted up by the rebound rod 4, so that the plane of the blocking plate 2 holds the material plate against the material plate, and the deflection plate 9 is driven to rotate by an external power source, so that during the rotation of the deflection plate 9, the convex key thereon pulls the moving column 10 to drive the extension rod 11 slides back and forth, so that the extension rod 11 drives the extrusion block 15 under the fixing plate 12 to slide, so that the inclined surface of the extrusion block 15 is pushed to both sides by the material plate, so that the extrusion block 15 clamps the material plate supported by the blocking plate 2 therein, and when the extension rod 11 retracts, it drives the clamped material plate thereunder to automatically slide under the hot fan 8, and the rotation of the deflection plate 9 drives the main delivery rod 7 therein to rotate, so that the main delivery rod 7 drives the hot fan 8 to rotate during the rotation, so that the hot fan 8 generates hot air during the rotation, so that the hot air blows the material plate thereunder to automatically remove the bubbles therein.

[0032] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0033] Combination Figures 1-4, an embodiment of the present application provides a device for removing bubbles from UV topcoat, including a material placement plate 1. A blocking plate 2 is slidably connected to the inner surface of the material placement plate 1. A compression spring holder 3 is fixedly connected to the lower surface of the blocking plate 2. A rebound rod 4 is slidably connected to the inner surface of the compression spring holder 3. One end of the rebound rod 4 close to the blocking plate 2 is fixedly connected to the lower surface of the material placement plate 1. An inner circulation plate 5 is fixedly connected to the outer surface of the material placement plate 1 on the side away from the rebound rod 4. A sealing top plate 6 is fixedly connected to the outer surface of the inner circulation plate 5 on the side away from the material placement plate 1. A main transmission rod 7 is rotatably connected to the inner surface of the sealing top plate 6. A hot air fan 8 is fixedly connected to the outer circumferential surface of the main transmission rod 7. The hot air fan 8 is a circular sleeve with a heating function. Blades are fixedly connected to the outer circumferential surface of the circular sleeve, and the orientation of the blades is slightly inclined towards the direction of the squeezing block 15. A deflection disc 9 is fixedly connected to the outer circumferential surface of the main transmission rod 7. A synchronizing column 10 is rotatably connected to the outer surface of the deflection disc 9 on the side away from the sealing top plate 6. One end of the synchronizing column 10 away from the deflection disc 9 is rotatably connected to an extension rod 11. The outer circumferential surface of the extension rod 11 is slidably connected to the sealing top plate 6. One end of the extension rod 11 close to the material placement plate 1 is fixedly connected to a fixing plate 12. A pressure receiving plate 13 is fixedly connected to the outer surface of the fixing plate 12 on the side close to the material placement plate 1. An inner squeezing rod 14 is slidably connected to the inner surface of the pressure receiving plate 13. The outer circumferential surface of the inner squeezing rod 14 is slidably connected to the inner circulation plate 5. One end of the inner squeezing rod 14 away from the inner circulation plate 5 is fixedly connected to a squeezing block 15. The outer surface of the squeezing block 15 on the side away from the material placement plate 1 is slidably connected to the fixing plate 12. A double tension spring 16 is fixedly connected to the outer surface of the squeezing block 15 on the side close to the inner squeezing rod 14. One end of the double tension spring 16 away from the squeezing block 15 is fixedly connected to the pressure receiving plate 13.

[0034] As Figures 2-4 can be seen, during the rotation of the deflection disc 9, the main transmission rod 7 inside it is driven to rotate, so that the hot air fan 8 is driven to rotate during the rotation of the main transmission rod 7, so that hot air is generated during the rotation of the hot air fan 8, so that the hot air blows on the material plate below it to automatically remove the bubbles inside.

[0035] In some embodiments, the material placement plate 1 is a rectangular plate. The inner circulation plate 5 is fixedly connected to the upper surface of the rectangular plate. A square hole is provided on the upper surface of the rectangular plate. The blocking plate 2 is slidably connected to the inner surface of the square hole. The rebound rod 4 is fixedly connected to the lower surface of the rectangular plate.

[0036] The material placement plate 1 is used to place the plate that needs to remove bubbles and provide necessary support for some devices.

[0037] In some embodiments, the blocking plate 2 is a triangular block. The outer surface of the triangular block is slidably connected to the material placement plate 1. The outer surface of the triangular block on the side away from the squeezing block 15 is an inclined surface. A square block is fixedly connected to the lower surface of the triangular block. The outer surface of the square block is slidably connected to the material placement plate 1. A compression spring holder 3 is fixedly connected to the outer surface of the square block on the side away from the triangular block.

[0038] The material plate is clamped by the blocking plate 2 to ensure that the material plate can be automatically clamped by the squeezing block 15.

[0039] In some embodiments, the rebound rod 4 is a circular rod. A material placing plate 1 is fixedly connected to the upper end of the circular rod. A compression spring holder 3 is slidably connected to the outer circumferential surface of the circular rod. A circular disc is fixedly connected to the lower end of the circular rod. A spring is fixedly connected to the upper surface of the circular disc. The inner surface of the spring is slidably connected to the circular rod. One end of the spring away from the circular disc is fixedly connected to the compression spring holder 3.

[0040] The blocking plate 2 is pushed upward by the rebound rod 4 so that the blocking plate 2 fixes the plate with paint.

[0041] In some embodiments, the inner circulation plate 5 consists of two rectangular plates. A material placing plate 1 is fixedly connected to the lower surface of the rectangular plate. A sealing top plate 6 is fixedly connected to the outer surface of one side of the rectangular plate away from the material placing plate 1. A rectangular groove is provided at one end of the rectangular plate close to the blocking plate 2. An inner squeezing rod 14 is slidably connected to the inner surface of the rectangular groove.

[0042] The inner circulation plate 5 is used to support some devices, provide a necessary working environment for some devices, and guide the hot air flow inside the device to a certain extent.

[0043] In some embodiments, the sealing top plate 6 is a rectangular plate. An inner circulation plate 5 is fixedly connected to the outer surface of one side of the rectangular plate close to the material placing plate 1. A circular hole is provided on the outer surface of one side of the rectangular plate close to the material placing plate 1. A main transmission rod 7 is rotatably connected to the inner surface of the circular hole. A rounded rectangular hole is provided on the outer surface of one side of the rectangular plate close to the material placing plate 1. An extension rod 11 is slidably connected to the inner surface of the rounded rectangular hole.

[0044] The sealing top plate 6 is used to support the components at the top of the device and provide a necessary working environment for the sliding of the extension rod 11.

[0045] In some embodiments, the offset disc 9 is a circular disc. A circular hole is provided at the center position of the circular disc. A main transmission rod 7 is fixedly connected to the inner surface of the circular hole. A circular convex key is provided on the outer surface of one side of the circular disc away from the sealing top plate 6. The outer circumferential surface of the convex key is rotatably connected to a synchronous moving column 10.

[0046] The offset disc 9 is used to drag the synchronous moving column 10 to slide through the convex key during its own rotation.

[0047] In some embodiments, the squeezing block 15 consists of two right trapezoidal blocks. The outer surface of the right trapezoidal block facing the blocking plate 2 is an inclined surface. An inner squeezing rod 14 is fixedly connected to the outer surface of one side of the right trapezoidal block close to the inner circulation plate 5. A double tension spring 16 is fixedly connected to the outer surface of one side of the right trapezoidal block close to the inner circulation plate 5.

[0048] By contacting the inclined surface of the extrusion block 15 with one end of the material, the material accumulates and moves to both sides along the inclined surface, so that the extrusion blocks 15 on both sides clamp the material plate.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0050] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A UV topcoat bubble removal device, comprising a material placement plate (1), characterized in that: The inner surface of the material placement plate (1) is slidably connected to a resistance plate (2), the lower surface of the resistance plate (2) is fixedly connected to a compression spring frame (3), the inner surface of the compression spring frame (3) is slidably connected to a rebound rod (4), one end of the rebound rod (4) close to the resistance plate (2) is fixedly connected to the lower surface of the material placement plate (1), the outer surface of the material placement plate (1) away from the rebound rod (4) is fixedly connected to an inner circulation plate (5), the outer surface of the inner circulation plate (5) away from the material placement plate (1) is fixedly connected to a capping plate (6), the inner surface of the capping plate (6) is rotatably connected to a main output rod (7), the outer circumferential surface of the main output rod (7) is fixedly connected to a heat fan (8), the outer circumferential surface of the main output rod (7) is fixedly connected to a deflection plate (9), the outer surface of the deflection plate (9) away from the capping plate (6) is rotatably connected to a synchronizing column (10), and one end of the synchronizing column (10) away from the deflection plate (9 ... An extension rod (11) is rotatably connected, and the outer circumferential surface of the extension rod (11) is slidably connected to a capping plate (6); an end of the extension rod (11) close to the material placement plate (1) is fixedly connected to a fixing plate (12); an outer surface of the fixing plate (12) close to the material placement plate (1) is fixedly connected to a pressure plate (13); an inner extrusion rod (14) is slidably connected to the inner surface of the pressure plate (13); an outer circumferential surface of the inner extrusion rod (14) is slidably connected to an inner circulation plate (5); an end of the inner extrusion rod (14) away from the inner circulation plate (5) is fixedly connected to an extrusion block (15); an outer surface of the extrusion block (15) away from the material placement plate (1) is slidably connected to the fixing plate (12); an outer surface of the extrusion block (15) close to the inner extrusion rod (14) is fixedly connected to a double tension spring (16); an end of the double tension spring (16) away from the extrusion block (15) is fixedly connected to the pressure plate (13).

2. A UV topcoat bubble removal device according to claim 1, characterized in that: The material placement plate (1) is a rectangular plate, the upper surface of which is fixedly connected to an inner circulation plate (5), the upper surface of which is provided with a square hole, the inner surface of which is slidably connected to a blocking plate (2), and the lower surface of which is fixedly connected to a rebound rod (4).

3. The UV topcoat bubble removal device according to claim 1, characterized in that: The blocking block (2) is a triangular block, the outer surface of the triangular block is slidably connected to a material placement plate (1), the outer surface of the triangular block away from the extrusion block (15) is an inclined surface, the lower surface of the triangular block is fixedly connected to a square block, the outer surface of the square block is slidably connected to the material placement plate (1), and the outer surface of the square block away from the triangular block is fixedly connected to a compression spring frame (3).

4. The UV topcoat bubble removal device according to claim 1, characterized in that: The rebound rod (4) is a circular rod, the upper end of which is fixedly connected to a material placing plate (1), the outer circumferential surface of which is slidably connected to a compression spring frame (3), the lower end of which is fixedly connected to a circular disk, the upper surface of which is fixedly connected to a spring, the inner surface of which is slidably connected to the circular rod, and the end of the spring away from the circular disk is fixedly connected to the compression spring frame (3).

5. The UV topcoat bubble removal device according to claim 1, characterized in that: The inner circulation plates (5) are two rectangular plates, the lower surfaces of the rectangular plates are fixedly connected to the material placement plates (1), the outer surfaces of the rectangular plates away from the material placement plates (1) are fixedly connected to the capping plates (6), and the ends of the rectangular plates close to the blocking plates (2) are provided with rectangular grooves, and the inner surfaces of the rectangular grooves are slidably connected to the inner extrusion rods (14).

6. The UV topcoat bubble removal device according to claim 1, characterized in that: The capping plate (6) is a rectangular plate, and an inner circulation plate (5) is fixedly connected to the outer surface of the rectangular plate on the side close to the material placement plate (1). A circular hole is provided on the outer surface of the rectangular plate on the side close to the material placement plate (1), and a main delivery rod (7) is rotatably connected to the inner surface of the circular hole. A rounded rectangular hole is provided on the outer surface of the rectangular plate on the side close to the material placement plate (1), and an extension rod (11) is slidably connected to the inner surface of the rounded rectangular hole.

7. The UV topcoat bubble removal device according to claim 1, characterized in that: The deflection plate (9) is a circular plate, a circular hole is provided at the center of the circular plate, a main output rod (7) is fixedly connected to the inner surface of the circular hole, a circular convex key is provided on the outer surface of the circular plate away from the capping plate (6), and a synchronizing column (10) is rotatably connected to the outer circumference of the convex key.

8. The UV topcoat bubble removal device according to claim 1, characterized in that: The extrusion blocks (15) are two right-angled trapezoidal blocks, the outer surface of the right-angled trapezoidal block facing the resistance block (2) is an inclined surface, the outer surface of the right-angled trapezoidal block close to the inner circulation plate (5) is fixedly connected to an inner extrusion rod (14), and the outer surface of the right-angled trapezoidal block close to the inner circulation plate (5) is fixedly connected to a double tension spring (16).

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