Keyboard placing mechanism of keyboard spraying machine and use method of keyboard placing mechanism

Abstract

The invention discloses a keyboard placing mechanism of a keyboard spraying machine and a using method thereof, the keyboard placing mechanism comprises a base, the base comprises an outer ring shell and an inner ring plate rotationally arranged in the outer ring shell, and a driving part is arranged on one side of the inner ring plate and used for driving the inner ring plate to rotate; the two sets of supports are symmetrically fixed to the two sides of the inner ring plate. The keyboard containing mechanism is installed in the keyboard spraying machine, the keyboard shell is connected with the traction belts of the two supports in a clamped mode, the traction belts are tightened to enable the keyboard shell to be suspended between the two supports, the keyboard shell on the keyboard containing mechanism can rotate circumferentially while being turned over, the turning speed of the keyboard shell can be adjusted, and therefore the keyboard shell can be conveniently turned over. And the keyboard shell can be uniformly sprayed in the spraying machine, the bin door does not need to be opened for turning over in the spraying process, and the spraying processing efficiency of the keyboard shell is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of keyboard spraying, in particular to a keyboard placement mechanism of a keyboard spraying machine and its usage method. Background Art

[0002] A keyboard spraying machine mainly consists of a feeding device, a spray gun, and an atomization generating source, and is mainly used for spraying and coloring the keyboard housing. The existing spraying method is to directly place the keyboard housing in the spraying machine for spraying. During the spraying process, one side of the keyboard is sprayed first, and then the spraying machine chamber door is opened to flip the keyboard to spray the other side. This method not only requires flipping the keyboard during the spraying process, but also requires repeated spraying in areas where the spraying is uneven, affecting the spraying processing efficiency of the keyboard housing. Therefore, the present invention proposes a keyboard placement mechanism of a keyboard spraying machine and its usage method to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a keyboard placement mechanism of a keyboard spraying machine and its usage method to solve the problem in the above background art that the existing spraying method is to directly place the keyboard housing in the spraying machine for spraying. During the spraying process, one side of the keyboard is sprayed first, and then the spraying machine chamber door is opened to flip the keyboard to spray the other side. This method not only requires flipping the keyboard during the spraying process, but also requires repeated spraying in areas where the spraying is uneven, affecting the spraying processing efficiency of the keyboard housing.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A keyboard placement mechanism of a keyboard spraying machine, including a base, including an outer ring shell and an inner ring plate rotatably arranged in the outer ring shell. A driving member is arranged on one side of the inner ring plate, and the driving member is used to drive the inner ring plate to rotate; A bracket, with two groups symmetrically fixed on both sides of the inner ring plate. The bracket includes a columnar shell, a cylindrical shell arranged at the top of the columnar shell, and a pulling member rotatably arranged in the cylindrical shell; The bottom end of the columnar shell is fixed on the inner ring plate. An annular straight tooth is arranged on the inner wall of the outer side plate of the outer ring shell. A driving straight gear is rotatably arranged in the columnar shell. One side of the driving straight gear extends out of the columnar shell and meshes with the annular straight tooth of the outer ring shell. The columnar shell and the cylindrical shell are internally connected. A transmission member is also arranged in the columnar shell and the cylindrical shell. The driving straight gear is in transmission connection with the pulling member through the transmission member.

[0005] As a preferred solution of the present invention, wherein: The inner side of the inner ring plate is close to the inner side plate of the outer ring shell. Four corners of the bottom of the inner ring plate are provided with rollers. The inner ring plate and the rollers are together placed in the outer ring shell to form a rotatable arrangement.

[0006] As a preferred embodiment of the present invention, wherein: the driving member includes a motor, a driving bevel gear, and an annular bevel gear disposed at the bottom of the inner ring plate. The output end of the motor penetrates through the outer side plate of the outer ring housing and is connected to the driving bevel gear. The annular bevel gear of the inner ring plate is located outside the roller, and the driving bevel gear meshes with the annular bevel gear of the inner ring plate.

[0007] As a preferred embodiment of the present invention, wherein: the transmission member includes a driven spur gear, a first-stage reduction gear set, a second-stage reduction gear set, and a third-stage reduction gear, which are sequentially arranged on one side of the driven spur gear from top to bottom. The transmission member further includes a first telescopic transmission rod and a second telescopic transmission rod; The first-stage reduction gear set includes a first-stage reduction gear and a first-stage transmission gear that mesh with each other. The second-stage reduction gear set includes a second-stage reduction gear and a second-stage transmission gear. The driven spur gear is coaxially connected to the driving spur gear. The first telescopic transmission rod, the first-stage reduction gear, the second-stage reduction gear, and the third-stage reduction gear are coaxially arranged. The first-stage transmission gear, the second-stage transmission gear, and the third-stage reduction gear mesh with the driven spur gear; The first telescopic transmission rod is rotatably arranged in the columnar housing. The top end of the first telescopic transmission rod is connected to a driving bevel gear. The bottom end of the first telescopic transmission rod is provided with spline teeth. A push rod is rotatably arranged on the lower section rod of the first telescopic transmission rod. A gear position groove is provided on one side of the columnar housing. The push rod is placed in the gear position groove of the columnar housing. Spline grooves that cooperate with the spline teeth of the first telescopic transmission rod are provided in the middle of the first-stage reduction gear, the second-stage reduction gear, and the third-stage reduction gear; The second telescopic transmission rod is rotatably arranged in the cylindrical housing. One end of the second telescopic transmission rod is connected to a driven bevel gear. The other end of the second telescopic transmission rod is coaxially connected to the pulling member. The driving bevel gear meshes with the driven bevel gear.

[0008] As a preferred embodiment of the present invention, wherein: one first mounting bracket, two second mounting brackets, and one third mounting bracket are arranged in the columnar housing. The driving spur gear and the driven spur gear are rotatably mounted on the first mounting bracket. The first-stage reduction gear set and the second-stage reduction gear set are rotatably mounted on the second mounting bracket. The third-stage reduction gear is rotatably mounted on the third mounting bracket.

[0009] As a preferred embodiment of the present invention, wherein: mounting seats are rotatably connected to both sides of the upper section rod of the first telescopic transmission rod and to the side of the second telescopic transmission rod away from the pulling member. The mounting seat of the first telescopic transmission rod is fixed to the inner wall of the columnar housing. The mounting seat of the second telescopic transmission rod is fixed to the inner wall of the cylindrical housing.

[0010] As a preferred embodiment of the present invention, one end of the cylindrical shell is threadedly connected to an extension tube. A bearing is embedded inside the end of the extension tube away from the cylindrical shell, and the pulling member is embedded in the bearing.

[0011] As a preferred embodiment of the present invention, the pulling member includes a connecting head and a pulling belt. The connecting head is embedded in the bearing. One end of the connecting head is connected to the pulling belt, and the other end of the connecting head is connected to the second telescopic transmission rod.

[0012] As a preferred embodiment of the present invention, the connecting head is of a columnar structure, and a clamping plate is connected to the end of the pulling belt away from the connecting head.

[0013] A method of using a keyboard placement mechanism of a keyboard spraying machine includes the following steps: S1. Install the keyboard placement mechanism into the keyboard spraying machine. Then, clamp and connect the two ends of the keyboard housing to the two pulling belts. Rotate the extension tube to move the extension tube into the cylindrical shell, tighten the pulling belts, and suspend the keyboard housing between the two brackets. S2. Then, push the push rod to drive the lower rod of the first telescopic transmission rod to move downward, and adjust the flipping speed of the keyboard housing. The adjustment process is as follows: When the push rod moves into the corner groove above the gear position groove, the spline teeth at the bottom end of the first telescopic transmission rod are inserted into the spline groove of the first-stage reduction gear, connecting the first telescopic transmission rod and the first-stage reduction gear for first-stage reduction. When the push rod moves into the corner groove below the gear position groove, the spline teeth at the bottom end of the first telescopic transmission rod are inserted into the spline groove of the second-stage reduction gear, connecting the first telescopic transmission rod and the second-stage reduction gear for second-stage reduction. When the push rod moves to the bottom of the gear position groove, the spline teeth at the bottom end of the first telescopic transmission rod are inserted into the spline groove of the third-stage reduction gear, connecting the first telescopic transmission rod and the third-stage reduction gear for third-stage reduction. S3. After the gear position adjustment is completed, start the motor to drive the driving bevel gear to rotate by the output shaft of the motor. The driving bevel gear drives the inner ring plate to rotate through the annular bevel teeth at the bottom of the inner ring plate, thereby driving the inner ring plate, the bracket, and the keyboard housing to rotate along the central axis of the outer ring shell. S4. When the bracket rotates, since the driving spur gear at the bottom of the bracket meshes with the annular spur teeth of the outer ring shell, the driving spur gear is driven to rotate. The driving spur gear drives the driven spur gear to rotate coaxially. During first-stage reduction, the driven spur gear drives the first-stage transmission gear, the first-stage reduction gear, and the first telescopic transmission rod to rotate. During second-stage reduction, the driven spur gear drives the second-stage transmission gear, the second-stage reduction gear, and the first telescopic transmission rod to rotate. During third-stage reduction, the driven spur gear drives the third-stage reduction gear and the first telescopic transmission rod to rotate. S5. When the first telescopic drive rod rotates, it drives the driving bevel gear, the driven bevel gear and the second telescopic drive rod to rotate. Then, through the second telescopic drive rod, it drives the connecting head, the pulling belt and the keyboard housing to rotate, so as to realize the circumferential rotation of the keyboard housing while flipping. S6. Start the keyboard spraying machine to spray-process the keyboard housing. After the processing is completed, separate the keyboard housing from the pulling belt and take it out.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The keyboard placement mechanism of the present invention is installed in the keyboard spraying machine. By clamping and connecting the keyboard housing with the pulling belts of the two brackets and tightening the pulling belts to suspend the keyboard housing between the two brackets, the keyboard housing on the keyboard placement mechanism can rotate circumferentially while flipping, and the flipping speed of the keyboard housing can also be adjusted, so that the keyboard housing can be evenly sprayed in the spraying machine. During the spraying process, there is no need to open the chamber door to turn the surface, which improves the spraying processing efficiency of the keyboard housing. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the present invention when installing the keyboard housing; Figure 3 is the sectional structural schematic diagram of the present invention; Figure 4 is of the present invention Figure 3 the enlarged structural schematic diagram of part A in; Figure 5 is of the present invention Figure 3 the enlarged structural schematic diagram of part B in; Figure 6 is of the present invention Figure 3 the enlarged structural schematic diagram of part C in; Figure 7 is the structural schematic diagram of the gear set of the present invention.

[0016] In the figure: 1, base; 11, outer ring shell; 111, annular spur gear; 12, inner ring plate; 13, driving member; 131, motor; 132, driving bevel gear; 133, annular bevel gear; 14, roller; 2, bracket; 21, cylindrical shell; 211, gear slot; 22, cylindrical shell; 221, extension cylinder; 222, bearing; 23, pulling member; 231, connector; 232, pulling belt; 233, card plate; 24, active spur gear; 25, transmission member; 251, driven spur gear; 252, first-stage reduction Speed ​​gear set; 2521, primary reduction gear; 2522, primary transmission gear; 253, secondary reduction gear set; 2531, secondary reduction gear; 2532, secondary transmission gear; 254, tertiary reduction gear; 255, first telescopic transmission rod; 2551, active bevel gear; 2552, spline gear; 2553, push rod; 256, second telescopic transmission rod; 2561, driven bevel gear; 257, spline groove; 26, first mounting bracket; 27, second mounting bracket; 28, third mounting bracket; 29, mounting seat. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 - 7 A keyboard placement mechanism of a keyboard spraying machine includes a base 1, an outer ring shell 11 and an inner ring plate 12 rotatably arranged in the outer ring shell 11, a driving member 13 is arranged on one side of the inner ring plate 12, and the driving member 13 is used to drive the inner ring plate 12 to rotate; The bracket 2 is provided with two groups and symmetrically fixed on both sides of the inner ring plate 12. The bracket 2 includes a cylindrical shell 21, a cylindrical shell 22 arranged at the top of the cylindrical shell 21, and a pulling member 23 rotatably arranged in the cylindrical shell 22; The bottom end of the cylindrical shell 21 is fixed on the inner ring plate 12, and the inner wall of the outer plate of the outer ring shell 11 is provided with an annular spur gear 111. A driving spur gear 24 is rotatably provided in the cylindrical shell 21. One side of the driving spur gear 24 extends out of the cylindrical shell 21 and meshes with the annular spur gear 111 of the outer ring shell 11. The cylindrical shell 21 is communicated with the inside of the cylindrical shell 22. Transmission members 25 are also provided in the cylindrical shell 21 and the cylindrical shell 22. The driving spur gear 24 is transmission-connected to the pulling member 23 through the transmission member 25.

[0019] In this embodiment, the inner side of the inner ring plate 12 is close to the inner side plate of the outer ring housing 11. Rollers 14 are provided at the four corners of the bottom of the inner ring plate 12. The inner ring plate 12 and the rollers 14 are placed together inside the outer ring housing 11 to form a rotational setting. The driving member 13 includes a motor 131, a driving bevel gear 132, and an annular bevel gear 133 provided at the bottom of the inner ring plate 12. The output end of the motor 131 penetrates through the outer side plate of the outer ring housing 11 and is connected to the driving bevel gear 132. The annular bevel gear 133 of the inner ring plate 12 is located outside the rollers 14, and the driving bevel gear 132 meshes with the annular bevel gear 133 of the inner ring plate 12.

[0020] In this embodiment, the transmission member 25 includes a driven spur gear 251, a first-stage reduction gear set 252, a second-stage reduction gear set 253, and a third-stage reduction gear 254 that are sequentially arranged from top to bottom on one side of the driven spur gear 251. The transmission member 25 further includes a first telescopic transmission rod 255 and a second telescopic transmission rod 256. The first-stage reduction gear set 252 includes a first-stage reduction gear 2521 and a first-stage transmission gear 2522 that mesh with each other. The second-stage reduction gear set 253 includes a second-stage reduction gear 2531 and a second-stage transmission gear 2532. The driven spur gear 251 is coaxially connected to the driving spur gear 24. The first telescopic transmission rod 255, the first-stage reduction gear 2521, the second-stage reduction gear 2531, and the third-stage reduction gear 254 are coaxially arranged. The first-stage transmission gear 2522, the second-stage transmission gear 2532, and the third-stage reduction gear 254 mesh with the driven spur gear 251. It should be noted that the gear diameters and the number of teeth of the first-stage reduction gear 2521, the second-stage reduction gear 2531, and the third-stage reduction gear 254 increase in sequence, and the transmission ratios decrease in sequence. The gear diameters and the number of teeth of the first-stage reduction gear 2521 and the first-stage transmission gear 2522 are the same. The gear diameters and the number of teeth of the second-stage transmission gear 2532 and the driven spur gear 251 are the same, so as to prevent the first-stage transmission gear 2522 and the second-stage transmission gear 2532 from affecting the transmission ratio. The first telescopic transmission rod 255 is rotatably arranged in the columnar housing 21. The top end of the first telescopic transmission rod 255 is connected with a driving bevel gear 2551. The bottom end of the first telescopic transmission rod 255 is provided with spline teeth 2552. A push rod 2553 is rotatably arranged on the lower section rod of the first telescopic transmission rod 255. Specifically, one end of the push rod 2553 is provided with a collar, and the collar of the push rod 2553 is sleeved on the lower section rod of the first telescopic transmission rod 255 to form a rotational setting of the push rod 2553. A gear position groove 211 is provided on one side of the columnar housing 21. The push rod 2553 is placed in the gear position groove 211 of the columnar housing 21. Spline grooves 257 that cooperate with the spline teeth 2552 of the first telescopic transmission rod 255 are provided in the middle of the first-stage reduction gear 2521, the second-stage reduction gear 2531, and the third-stage reduction gear 254. It should be noted that there are two corner grooves provided on one side of the gear slot 211. When it is moved into the upper corner groove of the gear slot 211, the spline teeth 2552 at the bottom end of the first telescopic transmission rod 255 are inserted into the spline groove 257 of the first-stage reduction gear 2521. When the push rod 2553 is moved into the lower corner groove of the gear slot 211, the spline teeth 2552 at the bottom end of the first telescopic transmission rod 255 are inserted into the spline groove 257 of the second-stage reduction gear 2531. When the push rod 2553 is moved to the bottom of the gear slot 211, the spline teeth 2552 at the bottom end of the first telescopic transmission rod 255 are inserted into the spline groove 257 of the third-stage reduction gear 254; The second telescopic transmission rod 256 is rotatably arranged in the cylindrical shell 22. One end of the second telescopic transmission rod 256 is connected with a driven bevel gear 2561, and the other end of the second telescopic transmission rod 256 is coaxially connected with the pulling member 23. The driving bevel gear 2551 meshes with the driven bevel gear 2561; Specifically, a first mounting bracket 26, two second mounting brackets 27 and a third mounting bracket 28 are arranged in the columnar shell 21. The driving spur gear 24 and the driven spur gear 251 are rotatably mounted on the first mounting bracket 26. The first-stage reduction gear set 252 and the second-stage reduction gear set 253 are rotatably mounted on the second mounting bracket 27. The third-stage reduction gear 254 is rotatably mounted on the third mounting bracket 28; It should be noted that the first mounting bracket 26 has two straight plate members and a rotating shaft. The rotating shaft is connected between the two plate members. The driving spur gear 24 and the driven spur gear 251 are sleeved on the rotating shaft of the first mounting bracket 26. The second mounting bracket 27 has two L-shaped plate members, two snap rings and a rotating shaft. The snap ring is arranged at the bend of the L-shaped plate member, and the rotating shaft is arranged at one end of the two L-shaped plate members. The third mounting bracket 28 has two straight plate members and two snap rings. The snap ring is arranged at one end of the straight plate member. Card slots are provided on both sides of the first-stage reduction gear 2521, the second-stage reduction gear 2531 and the third-stage reduction gear 254. The first-stage reduction gear 2521 and the second-stage reduction gear 2531 are both installed between the two snap rings of the second mounting bracket 27 through the card slots and can rotate. The first-stage transmission gear 2522 and the second-stage transmission gear 2532 are both sleeved on the rotating shaft of the second mounting bracket 27. The third-stage reduction gear 254 is installed between the two snap rings of the third mounting bracket 28 through the card slots and can rotate; Mounting seats 29 are rotatably connected to both sides of the upper section rod of the first telescopic transmission rod 255 and the side of the second telescopic transmission rod 256 away from the pulling member 23. The mounting seat 29 of the first telescopic transmission rod 255 is fixed on the inner wall of the columnar shell 21, and the mounting seat 29 of the second telescopic transmission rod 256 is fixed on the inner wall of the cylindrical shell 22.

[0021] In this embodiment, one end of the cylindrical shell 22 is threadedly connected with an extension cylinder 221. A bearing 222 is embedded in the end of the extension cylinder 221 away from the cylindrical shell 22. The pulling member 23 is embedded in the bearing 222; It should be noted that the outer surface of the extension cylinder 221 is provided with external threads, and the inner wall of the cylindrical shell 22 is provided with internal threads that cooperate with the external threads of the extension cylinder 221. The extension cylinder 221 is threadedly connected to the cylindrical shell 22 through threaded cooperation. When the extension cylinder 221 rotates, the extension cylinder 221 can move into or out of the cylindrical shell 22.

[0022] In this embodiment, the pulling member 23 includes a connecting head 231 and a pulling belt 232. Specifically, the connecting head 231 is a columnar structure. One end of the pulling belt 232 away from the connecting head 231 is connected with a clamping plate 233. The connecting head 231 is embedded in the bearing 222. One end of the connecting head 231 is connected to the pulling belt 232, and the other end of the connecting head 231 is connected to the second telescopic transmission rod 256.

[0023] The usage method of the keyboard placement mechanism of the keyboard spraying machine of the present invention includes the following steps: S1. Install the keyboard placement mechanism into the keyboard spraying machine, then clamp and connect the two ends of the keyboard housing to the two pulling belts 232. Rotate the extension cylinder 221 to make the extension cylinder 221 move into the cylindrical shell 22, tighten the pulling belt 232, and the keyboard housing hovers between the two brackets 2; S2. Then push the push rod 2553 to drive the lower section rod of the first telescopic transmission rod 255 to move downward, and adjust the flipping speed of the keyboard housing. The adjustment process is as follows: When the push rod 2553 moves into the corner groove on the upper side of the gear position groove 211, the spline teeth 2552 at the bottom end of the first telescopic transmission rod 255 are inserted into the spline groove 257 of the first-stage reduction gear 2521, so that the first telescopic transmission rod 255 is connected to the first-stage reduction gear 2521 for first-stage reduction; When the push rod 2553 moves into the corner groove on the lower side of the gear position groove 211, the spline teeth 2552 at the bottom end of the first telescopic transmission rod 255 are inserted into the spline groove 257 of the second-stage reduction gear 2531, so that the first telescopic transmission rod 255 is connected to the second-stage reduction gear 2531 for second-stage reduction; When the push rod 2553 moves to the bottom of the gear position groove 211, the spline teeth 2552 at the bottom end of the first telescopic transmission rod 255 are inserted into the spline groove 257 of the third-stage reduction gear 254, so that the first telescopic transmission rod 255 is connected to the third-stage reduction gear 254 for third-stage reduction; S3. After the gear position adjustment is completed, start the motor 131 to drive the driving bevel gear 132 to rotate by the output shaft of the motor 131. The driving bevel gear 132 is driven by the annular bevel teeth 133 at the bottom of the inner ring plate 12, so as to drive the inner ring plate 12, the bracket 2 and the keyboard housing to rotate along the central axis of the outer ring shell 11; S4. When the bracket 2 rotates, since the driving spur gear 24 at the bottom of the bracket 2 meshes with the annular spur teeth 111 of the outer ring housing 11, the driving spur gear 24 is driven to rotate. The driving spur gear 24 drives the driven spur gear 251 to rotate coaxially. During the first-stage deceleration, the driven spur gear 251 drives the first-stage transmission teeth 2522, the first-stage reduction teeth 2521, and the first telescopic transmission rod 255 to rotate. During the second-stage deceleration, the driven spur gear 251 drives the second-stage transmission teeth 2532, the second-stage reduction teeth 2531, and the first telescopic transmission rod 255 to rotate. During the third-stage deceleration, the driven spur gear 251 drives the third-stage reduction teeth 254 and the first telescopic transmission rod 255 to rotate; S5. When the first telescopic transmission rod 255 rotates, the first telescopic transmission rod 255 drives the driving bevel gear 2551, the driven bevel gear 2561, and the second telescopic transmission rod 256 to rotate. Then, the second telescopic transmission rod 256 drives the connector 231, the pulling belt 232, and the keyboard housing to rotate, so as to realize the circumferential rotation of the keyboard housing while flipping; S6. Start the keyboard spraying machine to spray-process the keyboard housing. After the processing is completed, separate the keyboard housing from the pulling belt 232 and take it out.

[0024] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

Claims

1. A keyboard placement mechanism for a keyboard spraying machine, characterized in that: include, A base (1) comprises an outer ring shell (11) and an inner ring plate (12) rotatably arranged in the outer ring shell (11), wherein a driving member (13) is arranged on one side of the inner ring plate (12), and the driving member (13) is used to drive the inner ring plate (12) to rotate; A bracket (2) having two groups and symmetrically fixed on both sides of the inner ring plate (12), the bracket (2) comprising a columnar shell (21), a cylindrical shell (22) arranged at the top of the columnar shell (21), and a pulling member (23) rotatably arranged in the cylindrical shell (22); The bottom end of the columnar shell (21) is fixed on the inner ring plate (12); the inner wall of the outer plate of the outer ring shell (11) is provided with an annular spur gear (111); a driving spur gear (24) is rotatably provided inside the columnar shell (21); one side of the driving spur gear (24) extends out of the columnar shell (21) and meshes with the annular spur gear (111) of the outer ring shell (11); the columnar shell (21) is communicated with the inside of the cylindrical shell (22); a transmission member (25) is further provided inside the columnar shell (21) and the cylindrical shell (22); the driving spur gear (24) is transmission-connected to the pulling member (23) via the transmission member (25).

2. The keyboard placement mechanism of the keyboard spraying machine according to claim 1 is characterized in that: The inner side of the inner ring plate (12) is in close contact with the inner side plate of the outer ring shell (11), and rollers (14) are provided at the four corners of the bottom of the inner ring plate (12). The inner ring plate (12) and the rollers (14) are placed together in the outer ring shell (11) to form a rotating arrangement.

3. The keyboard placement mechanism of the keyboard spraying machine according to claim 2 is characterized in that: The driving member (13) comprises a motor (131), a driving bevel gear (132) and an annular bevel gear (133) arranged at the bottom of the inner ring plate (12); the output end of the motor (131) passes through the outer plate of the outer ring shell (11) and is connected to the driving bevel gear (132); the annular bevel gear (133) of the inner ring plate (12) is located on the outer side of the roller (14); and the driving bevel gear (132) is meshed with the annular bevel gear (133) of the inner ring plate (12).

4. The keyboard placement mechanism of the keyboard spraying machine according to claim 1 or 3, characterized in that: The transmission member (25) comprises a driven spur gear (251), a primary reduction gear set (252), a secondary reduction gear set (253) and a tertiary reduction gear (254) which are arranged in sequence from top to bottom on one side of the driven spur gear (251), and the transmission member (25) further comprises a first telescopic transmission rod (255) and a second telescopic transmission rod (256); The primary reduction gear set (252) comprises a primary reduction gear (2521) and a primary transmission gear (2522) that are meshed with each other; the secondary reduction gear set (253) comprises a secondary reduction gear (2531) and a secondary transmission gear (2532); the driven spur gear (251) is coaxially connected to the driving spur gear (24); the first telescopic transmission rod (255), the primary reduction gear (2521), the secondary reduction gear (2531) and the tertiary reduction gear (254) are coaxially arranged; the primary transmission gear (2522), the secondary transmission gear (2532) and the tertiary reduction gear (254) are meshed with the driven spur gear (251); The first telescopic transmission rod (255) is rotatably arranged in the columnar shell (21); the top end of the first telescopic transmission rod (255) is connected to an active bevel gear (2551); the bottom end of the first telescopic transmission rod (255) is provided with spline teeth (2552); a push rod (2553) is rotatably arranged on the lower section of the first telescopic transmission rod (255); a gear slot (211) is provided on one side of the columnar shell (21); the push rod (2553) is placed in the gear slot (211) of the columnar shell (21); and the middle parts of the first-stage reduction teeth (2521), the second-stage reduction teeth (2531) and the third-stage reduction teeth (254) are all provided with spline slots (257) that match the spline teeth (2552) of the first telescopic transmission rod (255); The second telescopic transmission rod (256) is rotatably disposed in the cylindrical shell (22); one end of the second telescopic transmission rod (256) is connected to a driven bevel gear (2561); the other end of the second telescopic transmission rod (256) is coaxially connected to the pulling member (23); and the driving bevel gear (2551) is meshed with the driven bevel gear (2561).

5. The keyboard placement mechanism of the keyboard spraying machine according to claim 4, characterized in that: A first mounting frame (26), two second mounting frames (27) and a third mounting frame (28) are arranged in the columnar shell (21); the driving spur gear (24) and the driven spur gear (251) are rotatably mounted on the first mounting frame (26); the first-stage reduction gear set (252) and the second-stage reduction gear set (253) are rotatably mounted on the second mounting frame (27); and the third-stage reduction gear (254) is rotatably mounted on the third mounting frame (28).

6. The keyboard placement mechanism of the keyboard spraying machine according to claim 5, characterized in that: Both sides of the upper rod section of the first telescopic transmission rod (255) and the side of the second telescopic transmission rod (256) away from the pulling member (23) are rotatably connected to mounting seats (29); the mounting seat (29) of the first telescopic transmission rod (255) is fixed to the inner wall of the columnar shell (21), and the mounting seat (29) of the second telescopic transmission rod (256) is fixed to the inner wall of the cylindrical shell (22).

7. The keyboard placement mechanism of the keyboard spraying machine according to claim 6, characterized in that: An extension tube (221) is threadedly connected to one end of the cylindrical shell (22), a bearing (222) is embedded in the end of the extension tube (221) away from the cylindrical shell (22), and the pulling member (23) is embedded in the bearing (222).

8. The keyboard placement mechanism of the keyboard spraying machine according to claim 7, characterized in that: The pulling member (23) comprises a connecting head (231) and a pulling belt (232); the connecting head (231) is embedded in the bearing (222); one end of the connecting head (231) is connected to the pulling belt (232); and the other end of the connecting head (231) is connected to the second telescopic transmission rod (256).

9. The keyboard placement mechanism of the keyboard spraying machine according to claim 8, characterized in that: The connecting head (231) is a columnar structure, and one end of the pulling belt (232) away from the connecting head (231) is connected to a clamping plate (233).

10. A method for using the keyboard placement mechanism of the keyboard spraying machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, installing the keyboard placement mechanism into the keyboard spraying machine, then clamping and connecting the two ends of the keyboard housing with two pulling belts (232), rotating the extension cylinder (221) to move the extension cylinder (221) into the cylindrical shell (22), tightening the pulling belt (232), and the keyboard housing is suspended between the two brackets (2); S2, push the push rod (2553) again, so that the push rod (2553) drives the lower section of the first telescopic transmission rod (255) to move downward, and adjust the flipping speed of the keyboard housing. The adjustment process is as follows: When the push rod (2553) moves into the corner groove on the upper side of the gear slot (211), the spline teeth (2552) at the bottom end of the first telescopic transmission rod (255) are inserted into the spline grooves (257) of the primary reduction teeth (2521), so that the first telescopic transmission rod (255) is connected to the primary reduction teeth (2521) to perform primary reduction; When the push rod (2553) moves into the corner groove on the lower side of the gear groove (211), the spline teeth (2552) at the bottom end of the first telescopic transmission rod (255) are inserted into the spline grooves (257) of the secondary reduction teeth (2531), so that the first telescopic transmission rod (255) is connected to the secondary reduction teeth (2531) to perform secondary reduction; When the push rod (2553) moves into the bottom of the gear slot (211), the spline teeth (2552) at the bottom end of the first telescopic transmission rod (255) are inserted into the spline slots (257) of the third-stage reduction teeth (254), so that the first telescopic transmission rod (255) is connected to the third-stage reduction teeth (254) to perform third-stage reduction; S3, after the gear adjustment is completed, the motor (131) is started, so that the output shaft of the motor (131) drives the driving bevel gear (132) to rotate, and the driving bevel gear (132) is driven through the annular bevel gear (133) at the bottom of the inner ring plate (12), thereby driving the inner ring plate (12), the bracket (2) and the keyboard housing to rotate along the central axis of the outer ring shell (11); S4. When the bracket (2) rotates, the active spur gear (24) at the bottom of the bracket (2) meshes with the annular spur gear (111) of the outer ring shell (11), thereby driving the active spur gear (24) to rotate, and the active spur gear (24) drives the driven spur gear (251) to rotate coaxially. During the first-stage deceleration, the driven spur gear (251) drives the first-stage transmission gear (2522), the first-stage reduction gear (2521) and the first telescopic transmission rod (255) to rotate. During the second-stage deceleration, the driven spur gear (251) drives the second-stage transmission gear (2532), the second-stage reduction gear (2531) and the first telescopic transmission rod (255) to rotate. During the third-stage deceleration, the driven spur gear (251) drives the third-stage reduction gear (254) and the first telescopic transmission rod (255) to rotate. S5. When the first telescopic transmission rod (255) rotates, the first telescopic transmission rod (255) drives the active bevel gear (2551), the driven bevel gear (2561) and the second telescopic transmission rod (256) to rotate, and then the second telescopic transmission rod (256) drives the connecting head (231), the pulling belt (232) and the keyboard housing to rotate, thereby achieving circular rotation of the keyboard housing while flipping; S6, starting the keyboard spraying machine to spray the keyboard housing, and after the processing is completed, separating the keyboard housing from the pulling belt (232) and taking it out.

Images