Turnover device and spraying system

Abstract

The utility model discloses a turnover device and a spraying system, and relates to the technical field of spraying processing, the turnover device comprises a first driving piece and a transmission mechanism, the transmission mechanism is connected with the first driving piece, the turnover device further comprises at least one sealing clamping mechanism, and the sealing clamping mechanism is connected with the transmission mechanism. The first driving piece is used for driving the transmission mechanism to rotate so as to drive the sealing clamping mechanism to rotate; the sealing clamping mechanism comprises a clamping jaw assembly, a sealing piece and a second driving piece, the sealing piece is arranged at the end, away from the first driving piece, of the transmission mechanism, the clamping jaw assembly is arranged on the sealing piece, a sealing cavity is formed in the sealing piece, the second driving piece is arranged in the sealing cavity, and the clamping jaw assembly is arranged on the sealing piece. The second driving piece is used for driving the clamping jaw assembly to be opened and closed. The dustproof device has the advantages of improving the dustproof effect and prolonging the service life of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying processing, in particular to a turning device and a spraying system. Background Art

[0002] In traditional spraying operations, a turning device is primarily used to automatically turn the workpiece during the spraying process, ensuring uniform coating on all sides. However, these conventional turning devices are significantly inadequate in terms of dust prevention. The accumulation of particulate matter can easily cause wear and corrosion on the turning device's internal structure and transmission components, increasing the difficulty and cost of equipment maintenance. Utility Model Content

[0003] The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the present invention provides a turning device and a spraying system, which have the advantages of improving dustproof effect and equipment service life.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A turning device comprises a first driving member and a transmission mechanism, wherein the transmission mechanism is connected to the first driving member, and the turning device further comprises at least one sealing clamping mechanism, wherein the first driving member is used to drive the transmission mechanism to rotate, thereby driving the sealing clamping mechanism to rotate;

[0006] The sealing clamping mechanism includes a clamping jaw assembly, a sealing member and a second driving member. The sealing member is arranged on an end of the transmission mechanism away from the first driving member. The clamping jaw assembly is arranged on the sealing member. The sealing member forms a sealing cavity. The second driving member is arranged in the sealing cavity. The second driving member is used to drive the clamping jaw assembly to open and close.

[0007] By setting up a sealing clamping mechanism, the spray particles are prevented from entering the sealing clamping mechanism when spraying materials on the sprayed objects, thereby preventing the particles from adhering to the driving part of the sealing clamping mechanism, reducing the wear caused by the particles, and thus improving the service life of the equipment and production efficiency.

[0008] Optionally, the sealing member includes a mounting housing, a mounting cover, and a telescopic dust cover, wherein the mounting housing is disposed on the transmission mechanism, an opening is formed on a side of the mounting housing away from the transmission mechanism, the direction of the opening intersects with a rotation direction of the mounting housing, and the mounting cover is capable of covering the opening;

[0009] The telescopic dust cover is connected between the inner wall of the mounting shell and the mounting cover, the telescopic dust cover forms the sealed cavity, and the telescopic direction of the telescopic dust cover is consistent with the opening direction of the mounting shell; the second driving member is connected to the inner wall of the mounting shell;

[0010] The clamping jaw assembly is arranged on the mounting cover, and the second driving member is used to drive the mounting cover to move back and forth along the opening direction of the mounting shell to drive the clamping jaw assembly to open and close.

[0011] Optionally, the clamping jaw assembly includes a plurality of clamping jaws, wherein two of the clamping jaws are arranged on the first side of the mounting housing, and the other two of the clamping jaws are arranged on the second side of the mounting housing; each of the clamping jaws has a fixed end and a free end, the fixed end of each of the clamping jaws is rotatably connected to the mounting cover, the first side and the second side are opposite, and the first side and the second side are adjacent to the opening of the mounting housing;

[0012] The second driving member can drive the mounting cover to move toward the mounting housing along the opening direction of the mounting housing, so as to drive the free ends of the two clamping jaws located on the same side to move away from each other.

[0013] Optionally, the second driving member includes a cylinder and a plurality of elastic members; the cylinder includes a cylinder body and a piston rod, one end of the piston rod is disposed in the cylinder body, the other end of the piston rod is connected to the mounting cover, and the piston rod can reciprocate relative to the cylinder body along its own axis;

[0014] Each of the elastic members is connected between the inner wall of the mounting shell and the mounting cover, and a plurality of the elastic members are located in the sealing cavity; the elastic members can be reset to drive the piston rod to move in a direction away from the cylinder body.

[0015] Optionally, the transmission mechanism includes a transmission shaft, a sealing box, a rotating shaft, and a third driving member, wherein the transmission shaft is connected between the first driving member and the sealing box, and the third driving member is disposed in the sealing box;

[0016] The sealing box is formed with a mounting hole, the rotating shaft passes through the mounting hole, one end of the rotating shaft is connected to the third driving member, the other end of the rotating shaft is connected to the mounting housing, and the axial direction of the rotating shaft is consistent with the axial direction of the piston rod;

[0017] The third driving member can drive the rotating shaft to rotate along its own axial direction. The axial direction of the transmission shaft is consistent with the axial direction of the piston rod, and the axial direction of the transmission shaft intersects with the axial direction of the rotating shaft.

[0018] Optionally, the rotating shaft is formed with a first channel, and the first channel is communicated with the cylinder body and the sealing box respectively.

[0019] Optionally, the rotating shaft is formed with a second channel, and the second channel is communicated with the sealing cavity and the sealing box respectively.

[0020] Optionally, the transmission mechanism further includes an air guide pipe, an exhaust hole is formed on the surface of the sealing box, the air guide pipe extends into the exhaust hole, and the air guide pipe is communicated with the sealing box.

[0021] Optionally, the transmission mechanism further includes a dust cover, which is sleeved on the transmission shaft and connected between the first driving member and the sealing box.

[0022] The present invention also provides a spraying system, comprising a spraying device and a flipping device, wherein the spraying device is used to aim at the object to be sprayed clamped by the flipping device to spray the material, and the flipping device is any of the flipping devices described above.

[0023] These features and advantages of the present invention will be detailed in the following detailed description and accompanying drawings. The preferred embodiments or means of the present invention will be fully illustrated in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of the present invention. Furthermore, although multiple features, elements, and components may be present and are labeled with different symbols or numbers for convenience, they all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of a turning device according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the structure of the sealing clamping mechanism in the above embodiment ( Figure 1 (enlarged view of point A);

[0027] Figure 3 It is a cross-sectional schematic diagram of the sealing clamping mechanism and the transmission mechanism in the above embodiment;

[0028] Figure 4 is a cross-sectional schematic diagram of the sealing clamping mechanism in the above embodiment ( Figure 3 (enlarged view of point B);

[0029] Figure 5 This is a schematic diagram of the structure of the clamping jaw assembly in the above embodiment when it is relatively open;

[0030] Figure 6 This is a schematic diagram of the structure of the clamping jaw assembly in the above embodiment when it is relatively closed;

[0031] Figure 7 This is a schematic structural diagram of a turning device according to another embodiment of the present invention;

[0032] Figure 8 This is a structural schematic diagram of a spraying system according to another embodiment of the present invention.

[0033] Among them, 10, first driving member; 20, transmission mechanism; 21, transmission shaft; 22, sealing box; 23, rotating shaft; 23a, first channel; 24, motor; 25, right-angle converter; 26, hollow turntable reducer; 27, sealing ring; 28, gasket; 29, air guide tube; 30, sealing clamping mechanism; 31, mounting shell; 32, mounting cover; 33, telescopic dust cover; 33a, sealing chamber; 34, jaw assembly; 341, jaw; 3411, fixed end; 3412, turning part; 3413, free end; 35, elastic member; 36, guide column; 37, cylinder body; 38, piston rod; 40, dust cover; 41, curved connecting plate; 42, first connecting plate; 43, bottom plate; 44, bearing seat; 45, second connecting plate; 50, object to be sprayed; 60, spraying device. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described in the embodiments are intended to explain the present invention and are not to be construed as limiting the present invention.

[0035] Reference in this specification to "one embodiment," "an example," or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present patent disclosure. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0036] Because the spraying process generates a large amount of particulate matter, exposing the flip device's drive directly to the spraying environment for extended periods can lead to the accumulation of particulate matter on key components such as the motor, gears, and bearings. This increases friction during operation, causing equipment malfunction and even stalling or failure, impacting the equipment's lifespan and productivity. Chemicals in the particulate matter can react with the metal materials of the drive components, causing corrosion or oxidation, further exacerbating wear and performance degradation.

[0037] Therefore, the present invention provides a turning device, such as Figure 1 and Figure 5 As shown, it includes a first driving member 10 and a transmission mechanism 20, the transmission mechanism 20 is connected to the first driving member 10, and the flipping device also includes at least one sealing clamping mechanism 30, which is arranged on a side of the transmission mechanism 20 away from the first driving member 10. The first driving member 10 is used to drive the transmission mechanism 20 to rotate, thereby driving the sealing clamping mechanism 30 to rotate.

[0038] By setting up the sealing clamping mechanism 30, the spray particles are prevented from entering the sealing clamping mechanism 30 when the spraying material is sprayed on the spraying object 50, thereby preventing the particles from adhering to the driving part of the sealing clamping mechanism 30, reducing the wear caused by the particles, and thus improving the service life of the equipment and production efficiency.

[0039] It should be noted that the first driving member 10 drives the transmission mechanism 20 to rotate, and drives the sealing clamping mechanism 30 to rotate through the transmission mechanism 20, in order to move the object to be sprayed 50 clamped by the sealing clamping mechanism 30 from a specific position to the spraying area, and then move it from the spraying area to the original position.

[0040] In the present invention, there is no particular limitation on the specific structure of the sealing clamping mechanism 30, as long as the sealing clamping mechanism 30 has a sealed space for accommodating the driving part. Figures 2 to 4 As shown, the sealing clamping mechanism 30 includes a jaw assembly 34, a seal and a second drive member. The seal is arranged on the end of the transmission mechanism 20 away from the first drive member 10. The jaw assembly 34 is arranged on the seal. The seal forms a sealing cavity 33a. The second drive member is arranged in the sealing cavity 33a. The second drive member is used to drive the jaw assembly 34 to open and close.

[0041] By setting a seal, the second drive member is set in the sealed cavity 33a formed by the seal, so as to prevent the particles generated in the spraying production process from adhering to the second drive member, reducing the wear and failure rate of the flip device caused by the particles, thereby extending the service life of the flip device.

[0042] In the present invention, there is no particular limitation on the specific structure of the sealing member, as long as a sealing cavity 33a for accommodating the second driving member can be formed. Figure 3 and Figure 4 As shown, the seal includes a mounting shell 31, a mounting cover 32 and a telescopic dust cover 33. The mounting shell 31 is arranged on the transmission mechanism 20. An opening is formed on the side of the mounting shell 31 away from the transmission mechanism 20. The direction of the opening intersects with the rotation direction of the mounting shell 31. The mounting cover 32 can cover the opening.

[0043] The telescopic dust cover 33 is connected between the inner wall of the mounting housing 31 and the mounting cover 32. The telescopic dust cover 33 forms a sealed cavity 33a. The telescopic direction of the telescopic dust cover 33 is consistent with the opening direction of the mounting housing 31. The second driving member is connected to the inner wall of the mounting housing 31.

[0044] The clamping jaw assembly 34 is disposed on the mounting cover 32 , and the second driving member is used to drive the mounting cover 32 to reciprocate along the opening direction of the mounting shell 31 to drive the clamping jaw assembly 34 to open and close.

[0045] By arranging the mounting housing 31 on the transmission mechanism 20, the first driving member 10 drives the transmission mechanism 20 to rotate, and the transmission mechanism 20 drives the mounting housing 31 to rotate. When the article 50 to be sprayed is located at a position on the conveyor belt corresponding to the mounting housing 31, the second driving member drives the mounting cover 32 to move, causing the clamping jaw assembly 34 to relatively close to clamp the article 50 to be sprayed. After clamping the article 50 to be sprayed, the mounting housing 31 rotates under the drive of the transmission mechanism 20, thereby driving the clamping jaw assembly 34 to rotate, causing the article 50 to be sprayed to rotate to the spraying area. After spraying is completed, the transmission mechanism 20 drives the mounting housing 31 to rotate in the opposite direction under the drive of the first driving member 10, causing the sprayed article to rotate to its original position, and the second driving member drives the mounting cover 32 to move, causing the clamping jaw assembly 34 to relatively open, thereby releasing the sprayed article.

[0046] In the present invention, there is no special limitation on the number of the sealing clamping mechanism 30. In order to improve the processing efficiency, Figure 1 As shown, two sealing clamping mechanisms 30 can be provided, one on each side of the transmission mechanism 20. While the jaw assembly 34 of one sealing clamping mechanism 30 is gripping the current object 50 to be sprayed and moving it to the spraying zone, the jaw assembly 34 of the other sealing clamping mechanism 30 is facing the next object 50 to be sprayed. After the current object is sprayed, the jaw assembly 34 of the other sealing clamping mechanism 30, driven by the corresponding second driving member, grips the next object 50 to be sprayed. This allows the current object to be sprayed to rotate back to its original position while the next object 50 to be sprayed can be simultaneously moved to the spraying zone, thereby improving the processing efficiency of the turning device.

[0047] In an alternative embodiment, Figure 2 As shown, the clamping jaw assembly 34 includes a plurality of clamping jaws 341, two of which are disposed on a first side of the mounting housing 31, and another two of which are disposed on a second side of the mounting housing 31. Each clamping jaw 341 has a fixed end 3411 and a free end 3413. The fixed end 3411 of each clamping jaw 341 is rotatably connected to the mounting cover 32, with the first side and the second side facing each other, and both the first side and the second side being adjacent to the opening of the mounting housing 31.

[0048] The second driving member can drive the mounting cover 32 to move toward the mounting housing 31 along the opening direction of the mounting housing 31 , so as to drive the free ends 3413 of the two clamping jaws 341 on the same side to move away from each other.

[0049] In this embodiment, the clamping jaw 341 may be approximately V-shaped. Figure 2 、 Figures 4 to 6 As shown, the fixed end 3411 of the clamping jaw 341 is rotatably connected to the mounting cover 32, and the vicinity of the transition portion 3412 of the clamping jaw 341 is rotatably connected to the mounting housing 31. When it is necessary to clamp the article 50 to be sprayed, the second driving member drives the mounting cover 32 toward the mounting housing 31. Driven by the mounting cover 32, the clamping jaw 341 rotates about the connection point with the mounting housing 31, and the free end 3413 of the clamping jaw 341 moves toward the mounting cover 32. In this way, with the cooperation of each clamping jaw 341, the article 50 to be sprayed can be clamped. Similarly, when it is necessary to lower the article 50 to be sprayed, the second driving member drives the mounting cover 32 toward the mounting housing 31. Driven by the mounting cover 32, the free end 3413 of each clamping jaw 341 moves away from the mounting housing 31, and the clamping jaws 341 open relative to each other, thereby releasing the article 50 to be sprayed.

[0050] Alternatively, as Figure 3 and Figure 4 As shown, the second driving member includes a cylinder and multiple elastic members 35. The cylinder includes a cylinder body 37 and a piston rod 38. One end of the piston rod 38 is arranged in the cylinder body 37, and the other end of the piston rod 38 is connected to the mounting cover 32. The piston rod 38 can move back and forth relative to the cylinder body 37 along its own axial direction.

[0051] Each elastic member 35 is connected between the inner wall of the mounting housing 31 and the mounting cover 32, and multiple elastic members 35 are located in the sealed cavity 33a. The elastic member 35 can be reset to drive the piston rod 38 to move away from the cylinder body 37.

[0052] In this embodiment, the cylinder can be a single-acting cylinder. When it is necessary to clamp the object 50 to be sprayed, the single-acting cylinder is started, and the piston rod 38 moves toward the cylinder body 37, driving the mounting cover 32 to move toward the mounting shell 31, thereby driving the various clamping jaws 341 to close relative to each other, and the elastic member 35 is in a compressed state. After the spraying is completed and the sprayed object is rotated to its original position, the single-acting cylinder is de-energized, the elastic member 35 is reset, and the mounting cover 32 moves in a direction away from the mounting shell 31, thereby driving the various clamping jaws 341 to open relative to each other, releasing the sprayed object. The elastic member 35 can be a spring. In order to increase the stability of the movement of the mounting cover 32, a guide column 36 corresponding to the number of springs is provided on the side of the mounting cover 32 facing the mounting shell 31, and each spring is sleeved on the corresponding guide column 36.

[0053] In an alternative embodiment, Figure 1 and Figure 3 As shown, the transmission mechanism 20 includes a transmission shaft 21 , a sealing box 22 , a rotating shaft 23 , and a third driving member. The transmission shaft 21 is connected between the first driving member 10 and the sealing box 22 , and the third driving member is disposed in the sealing box 22 .

[0054] The sealing box 22 is formed with a mounting hole, and the rotating shaft 23 passes through the mounting hole. One end of the rotating shaft 23 is connected to the third driving member, and the other end of the rotating shaft 23 is connected to the mounting shell 31. The axial direction of the rotating shaft 23 is consistent with the axial direction of the piston rod 38.

[0055] The third driving member can drive the rotating shaft 23 to rotate along its own axial direction. The axial direction of the transmission shaft 21 is consistent with the axial direction of the piston rod 38 , and the axial direction of the transmission shaft 21 intersects with the axial direction of the rotating shaft 23 .

[0056] The provision of the rotating shaft 23 increases the freedom of movement of the clamping jaw assembly 34. When the clamping jaw assembly 34 grips the article 50 to be sprayed and rotates toward the spraying area around the transmission shaft 21, the third drive member is activated to rotate the rotating shaft 23. The axis of the rotating shaft 23 intersects the axis of the transmission shaft 21. The rotating shaft 23 rotates the mounting housing 31, thereby rotating the article 50 held by the clamping jaw assembly 34, ensuring uniform spraying of the article 50.

[0057] It is understood that the intersection referred to above indicates that the gripper assembly 34 can rotate in two dimensions, increasing the freedom of movement of the gripper assembly 34. For example, when the flipping device of the present invention is disposed above a conveyor belt for conveying articles 50 to be sprayed, the axis of the rotating shaft 23 and the axis of the transmission shaft 21 are projected onto the conveyor belt surface in a direction perpendicular to the conveyor belt surface. In this case, the projections of the axis of the rotating shaft 23 and the axis of the transmission shaft 21 intersect, preferably are perpendicular.

[0058] In a specific embodiment, Figure 3 As shown, the third driving component includes a motor 24, a right-angle converter 25 and a hollow turntable reducer 26. The motor 24 is arranged on the inner wall of the sealing box 22, the right-angle converter 25 is connected to the motor 24, and the hollow turntable reducer 26 is connected between the right-angle converter 25 and the rotating shaft 23.

[0059] Optionally, the rotating shaft 23 is formed with a first passage 23 a that communicates with the cylinder body 37 and the sealing box 22 , respectively.

[0060] In order to ensure the air pressure balance and sealing inside the retractable dust cover 33, a first channel 23a is set up, and the air pipe of the cylinder body 37 can pass through the first channel 23a, and gas exchange is carried out in the sealing box 22 during exhaust and intake. There is no need to open additional holes on the retractable dust cover 33, which improves the sealing of the retractable dust cover 33 and prevents particles of the spray material from adhering to the second driving member.

[0061] In an optional embodiment, the rotating shaft 23 is formed with a second channel (not shown in the figure), and the second channel is communicated with the sealing cavity 33a and the sealing box 22 respectively.

[0062] By providing a second channel on the rotating shaft 23 , the retractable dust cover 33 can exchange gas with the sealing box 22 when retracting, thereby ensuring the air pressure balance of the sealing cavity 33 a when the retractable dust cover 33 is retracted.

[0063] Optionally, the transmission mechanism 20 further includes an air guide tube 29 . An exhaust hole is formed on the surface of the sealing box 22 . The air guide tube 29 extends into the exhaust hole and is communicated with the sealing box 22 .

[0064] The air guide tube 29 is provided to ensure the air pressure balance in the sealed box 22. At the same time, since the air guide tube 29 extends outward, the possibility of particles entering the sealed box 22 is reduced, and particles are prevented from adhering to the third driving member in the sealed box 22.

[0065] To further enhance the sealing effect of the sealing box 22, preferably, a sealing ring 27 is sleeved on the outer side of the rotating shaft 23, and the outer periphery of the sealing ring 27 is in contact with the mounting hole. The transmission mechanism 20 further includes a washer 28, which is provided at the connection between the rotating shaft 23 and the third driving member.

[0066] In an alternative embodiment, Figure 1 and Figure 7 As shown, the transmission mechanism 20 further includes a dust cover 40 . The dust cover 40 is sleeved on the transmission shaft 21 , and the dust cover 40 is connected between the first driving member 10 and the sealing box 22 .

[0067] In one specific embodiment, the dust cover 40 includes a first connecting plate 42, a second connecting plate 45, a bottom plate 43, and a curved connecting plate 41. The bottom plate 43 is connected between the first connecting plate 42 and the second connecting plate 45. The curved connecting plate 41 is connected to the bottom plate 43. The first connecting plate 42, the second connecting plate 45, the bottom plate 43, and the curved connecting plate 41 enclose a sealed space. The transmission mechanism 20 also includes a bearing seat 44, which is disposed on the bottom plate 43. The transmission shaft 21 is sequentially passed through the first connecting plate 42, the bearing seat 44, and the second connecting plate 45. The provision of the dust cover 40 reduces the deposition of particles on the surface of the transmission shaft 21, thereby reducing wear on the transmission shaft 21 caused by particle deposition.

[0068] The utility model also provides a spraying system, such as Figure 8 As shown, it includes a spraying device 60 and a turning device, the spraying device 60 is used to aim at the object to be sprayed clamped by the turning device to spray the material, and the turning device is any of the turning devices described above.

[0069] By setting up a dust-proof flipping device, particles of the spraying material can be prevented from accumulating on key components of the flipping device such as the motor, gears, and bearings when spraying objects, thereby avoiding wear of key components of the flipping device, avoiding frequent maintenance, and improving the working efficiency of the spraying system.

[0070] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are included within the scope of the claims.

Claims

1. A turning device, comprising a first driving member and a transmission mechanism, wherein the transmission mechanism is connected to the first driving member, characterized in that: The flipping device further includes at least one sealing clamping mechanism, and the first driving member is used to drive the transmission mechanism to rotate, thereby driving the sealing clamping mechanism to rotate; The sealing clamping mechanism includes a clamping jaw assembly, a sealing member and a second driving member. The sealing member is arranged on an end of the transmission mechanism away from the first driving member. The clamping jaw assembly is arranged on the sealing member. The sealing member forms a sealing cavity. The second driving member is arranged in the sealing cavity. The second driving member is used to drive the clamping jaw assembly to open and close.

2. The turning device according to claim 1, characterized in that: The sealing member includes a mounting housing, a mounting cover, and a telescopic dust cover. The mounting housing is disposed on the transmission mechanism. An opening is formed on a side of the mounting housing away from the transmission mechanism. The direction of the opening intersects with the rotation direction of the mounting housing. The mounting cover can cover the opening. The telescopic dust cover is connected between the inner wall of the mounting shell and the mounting cover, the telescopic dust cover forms the sealed cavity, and the telescopic direction of the telescopic dust cover is consistent with the opening direction of the mounting shell; the second driving member is connected to the inner wall of the mounting shell; The clamping jaw assembly is arranged on the mounting cover, and the second driving member is used to drive the mounting cover to move back and forth along the opening direction of the mounting shell to drive the clamping jaw assembly to open and close.

3. The turning device according to claim 2, characterized in that: The clamping jaw assembly includes a plurality of clamping jaws, wherein two of the clamping jaws are disposed on a first side of the mounting housing, and wherein the other two of the clamping jaws are disposed on a second side of the mounting housing; each of the clamping jaws has a fixed end and a free end, the fixed end of each of the clamping jaws is rotatably connected to the mounting cover, the first side and the second side are opposite, and the first side and the second side are both adjacent to the opening of the mounting housing; The second driving member can drive the mounting cover to move toward the mounting housing along the opening direction of the mounting housing, so as to drive the free ends of the two clamping jaws located on the same side to move away from each other.

4. The turning device according to claim 3, characterized in that: The second driving member includes a cylinder and a plurality of elastic members; the cylinder includes a cylinder body and a piston rod, one end of the piston rod is disposed in the cylinder body, the other end of the piston rod is connected to the mounting cover, and the piston rod can reciprocate along its own axis relative to the cylinder body; Each of the elastic members is connected between the inner wall of the mounting shell and the mounting cover, and a plurality of the elastic members are located in the sealing cavity; the elastic members can be reset to drive the piston rod to move in a direction away from the cylinder body.

5. The turning device according to claim 4, characterized in that: The transmission mechanism includes a transmission shaft, a sealing box, a rotating shaft, and a third driving member, wherein the transmission shaft is connected between the first driving member and the sealing box, and the third driving member is arranged in the sealing box; The sealing box is formed with a mounting hole, the rotating shaft passes through the mounting hole, one end of the rotating shaft is connected to the third driving member, the other end of the rotating shaft is connected to the mounting housing, and the axial direction of the rotating shaft is consistent with the axial direction of the piston rod; The third driving member can drive the rotating shaft to rotate along its own axial direction. The axial direction of the transmission shaft is consistent with the axial direction of the piston rod, and the axial direction of the transmission shaft intersects with the axial direction of the rotating shaft.

6. The turning device according to claim 5, characterized in that: The rotating shaft is formed with a first passage, which is communicated with the cylinder body and the sealing box, respectively.

7. The turning device according to claim 5, characterized in that: The rotating shaft is formed with a second channel, and the second channel is communicated with the sealing cavity and the sealing box respectively.

8. The turning device according to claim 6 or 7, characterized in that: The transmission mechanism further includes an air guide pipe. An exhaust hole is formed on the surface of the sealing box. The air guide pipe extends into the exhaust hole and is communicated with the sealing box.

9. The turning device according to any one of claims 5 to 7, characterized in that: The transmission mechanism further includes a dust cover, which is sleeved on the transmission shaft and connected between the first driving member and the sealing box.

10. A spraying system comprising a spraying device and a turning device, wherein the spraying device is used to spray materials at an object to be sprayed held by the turning device, and wherein: The turning device is the turning device according to any one of claims 1 to 9.

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