Magnetic rotor protecting and holding structure for printing

Abstract

The invention provides a magnetic rotor protecting and holding structure for printing, and relates to the technical field of motor parts, the magnetic rotor protecting and holding structure for printing comprises a protecting and holding bottom plate and a rotor body, a supporting shell is arranged above the protecting and holding bottom plate, and an electromagnetic jacket is arranged in the supporting shell; a plurality of silicon steel sheet iron cores capable of controlling the suspension position of the rotor body are arranged in the electromagnetic jacket, the two ends of the rotor body are each provided with two protecting and holding frame assemblies, each protecting and holding frame assembly is installed on a protecting and holding bottom plate, and a strip-shaped gear capable of horizontally moving is arranged below each protecting and holding frame assembly on the same side; the magnetic force of a plurality of silicon steel sheet iron cores and enameled wire windings in the electromagnetic jacket is adjusted, the rotor body is controlled to suspend, and when the rotor body runs at a high speed, the four groups of protecting and holding frame assemblies at the front end and the rear end of the rotor body can be used for clamping and preventing the rotor body from deflecting and keeping the center of the rotor body; therefore, the operation and disassembly of the rotor body can be quickly maintained.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor components, and more specifically, particularly relates to a magnetic rotor holding structure for printing. Background Art

[0002] In the fields of installation, positioning, operation and maintenance of motor rotors, traditional technical means have many drawbacks, seriously affecting the performance, stability and maintenance convenience of motors.

[0003] Traditional rotor installation methods usually lack accurate and efficient positioning mechanisms. When installing the rotor body into devices such as electromagnetic jackets, it is often difficult to quickly find the center position, and the positioning process is cumbersome and time-consuming, resulting in low assembly efficiency. Moreover, due to the lack of an effective initial positioning auxiliary structure, when controlling the rotor by electromagnetic force suspension, the positioning time is long, affecting the overall installation process.

[0004] During the operation of the rotor, preventing the rotor from skewing is a key issue, but traditional methods have poor effects. When the rotor rotates at high speed, it is difficult to effectively clamp the rotor only by simple fixing methods, and it is impossible to ensure that the rotor always remains in the center position, and it is easy to skew, which will not only reduce the motor performance, but may also cause mechanical failures and shorten the service life of the motor.

[0005] In addition, for the heat generated by the motor rotor during operation, traditional cooling methods have deficiencies. If the heat generated by the rotor operation cannot be dissipated in time, it will cause the motor temperature to be too high, affecting the performance and reliability of the motor. However, traditional cooling systems may not be able to make full use of the space and air flow around the rotor, and the cooling efficiency is low, and it is impossible to effectively cool the rotor.

[0006] During equipment maintenance and handling, etc., the traditional method of protecting the rotor is not perfect enough. During shutdown maintenance, the rotor is easily damaged due to shaking; during equipment handling, debugging or standby, due to the lack of a reliable mechanical locking device, the rotor may fall due to vibration or accidental touch, causing damage.

[0007] Moreover, when there are machining errors or installation deviations in the rotor, it is difficult for traditional fixtures to adaptively adjust the clamping direction. Traditional fixtures are usually fixed structures and need to be adjusted repeatedly to adapt to rotors in different states. Not only is the operation complex, but it is also difficult to ensure the clamping accuracy and stability, affecting the overall performance of the motor. Summary of the Invention

[0008] In order to solve the above technical problems, the present invention provides a magnetic rotor holding structure for printing to solve the above problems.

[0009] A magnetic rotor holding structure for printing, comprising a holding bottom plate and a rotor body. Above the holding bottom plate, there is a support shell. Inside the support shell, there is an electromagnetic jacket. Inside the electromagnetic jacket, there are multiple silicon steel sheet cores that can control the suspension position of the rotor body. At both ends of the rotor body, there are two groups of holding frame assemblies, and each group of holding frame assemblies is installed on the holding bottom plate. Below each group of holding frame assemblies on the same side, there is a horizontally movable strip gear, which is used to adjust the rotation angle of the holding frame assembly. Each group of holding frame assemblies includes a rotating arm. At the end of each rotating arm, there is a joint frame. At the end of each joint frame, there is a ball head frame movably arranged, and the ball head frame is used to position the rotor body.

[0010] Preferably, each of the silicon steel sheet cores is fixed to the inner wall of the electromagnetic jacket. On the surface of each silicon steel sheet core, there is an enameled wire winding, and every two silicon steel sheet cores are electromagnetically connected. Inside the electromagnetic jacket, there are three concentrically oriented guide posts. The end of each guide post is located inside the electromagnetic jacket, and between the end of each guide post and the inside of the electromagnetic jacket, a first spring is fixedly installed. A positioning groove is formed in the outer ring of the rotor body. The end of each guide post is conical, and the end of each guide post is located inside the positioning groove.

[0011] Preferably, at the bottom corner of each rotating arm, a fixed shaft is fixedly installed, and a gear is fixedly installed outside each fixed shaft. Below each gear, it meshes with the strip gear. At the end of each strip gear, an auxiliary push plate is fixedly installed. Between the two auxiliary push plates, a push frame is movably fitted, and a drive assembly is arranged on the back of the push frame. The threaded rod at the end of the output shaft of the drive assembly penetrates outside the push frame. Between the other end of each strip gear and the side wall of the holding bottom plate, a second spring is fixedly installed. The motor part of each drive assembly is fixed to the holding bottom plate. Each auxiliary push plate is triangular, each push frame is isosceles trapezoidal, and the inclined surface of each auxiliary push plate is in contact with the waist surface of the push frame. Inside each rotating arm, a coolant groove is formed, and a sealing cover is provided at the end of the coolant groove. On the side of each rotating arm, a cooling chamber is provided, and the cooling chamber is connected to the coolant groove inside the rotating arm through a hose.

[0012] Preferably, a connecting column is fixedly installed at the lower end of each ball head bracket, a bottom ball is fixedly installed at the lower end of each connecting column, each bottom ball is movably installed inside the joint bracket, a movable plate is fixedly installed at the lower end of each bottom ball, and a heat dissipation copper rod is installed through the ball head bracket, the connecting column and the bottom ball, and the heat dissipation copper rod is installed in the coolant tank inside the rotating arm. A slide rail bracket is fixedly installed near the bottom opening of the joint bracket. Arc-shaped slide brackets are rotatably installed on both inner walls of the slide rail bracket. Support brackets are fixedly installed at the front and back of the slide rail bracket. A third spring is fixedly installed between the two sides of each support bracket and the arc-shaped slide bracket. A fourth spring is fixedly installed between the two sides of each movable plate and the two arc-shaped slide brackets.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, each set of holding bracket assemblies includes a rotating arm. A joint bracket is provided at the end of each rotating arm. A ball head bracket is movably provided at the end of each joint bracket. The ball head bracket is used to position the rotor body. When installing the rotor body, the rotor body is inserted into the electromagnetic clamping sleeve, and the electromagnetic clamping sleeve is started. The magnetic forces of the multiple silicon steel sheet iron cores and enameled wire windings inside the electromagnetic clamping sleeve are adjusted to control the suspension of the rotor body. When the rotor body rotates at a high speed, the four sets of holding bracket assemblies at the front and rear ends of the rotor body can be used for clamping to prevent the rotor body from skewing and keep the center of the rotor body. A dual mechanism of positioning and clamping is adopted, so that the operation and disassembly of the rotor body can be quickly maintained.

[0015] In the present invention, the end of each guide post is located inside the electromagnetic clamping sleeve, and a first spring is fixedly installed between the end of each guide post and the inside of the electromagnetic clamping sleeve. A positioning groove is provided on the outer ring of the rotor body. The end of each guide post is conical, and the end of each guide post is located inside the positioning groove. After the rotor body is installed inside multiple electromagnetic clamping sleeves, the positioning groove provided on the surface of the rotor body is located between the three guide posts. The three guide posts can help the rotor body perform initial positioning, and the first spring is provided at the end of each of the three guide posts, which can help the guide posts complete the initial center alignment. Subsequently, the silicon steel sheet iron core and the enameled wire winding drive the rotor body, which can effectively shorten the positioning time. And after the electromagnetic clamping sleeve is powered off, the three guide posts can play an auxiliary supporting role to prevent the rotor body from suddenly falling and being damaged by collision.

[0016] In the present invention, the movement of the pushing frame drives the movement of the auxiliary pushing plates on both sides. The auxiliary pushing plates on both sides move synchronously and drive the strip-shaped gears on both sides to move towards both sides. The movement of the strip-shaped gears will drive the compression of the second springs at the ends. The gears mesh with the strip-shaped gears. Therefore, the gears will drive the rotation arms to rotate. The two rotation arms synchronously drive the ball head frame to rotate and approach the rotor body. The ball head frame contacts the surface of the rotor body to complete clamping and positioning. During subsequent shutdown maintenance, it can also prevent the rotor body from shaking. During equipment handling, debugging or standby, the holding frame assembly provides mechanical locking to prevent the rotor body from falling due to vibration or accidental touch. When installing the rotor body, the symmetric clamping of the holding frame assembly can assist in completing precise alignment and improve the assembly efficiency. When the rotor body is operating, the driving assembly is started to open the ball head frames on both sides, and the ball head frames on both sides are separated from the rotor body.

[0017] In the present invention, the cooling chamber is communicated with the coolant tank in the rotation arm through a hose. When in use, when the rotor body is rotating at a high speed, each ball head frame is separated from the rotor body but is relatively close to the rotor body. On the one hand, it can prevent the rotor body from falling when it is eccentric. On the other hand, the rotor body generates heat during operation, and the rotation of the rotor body will drive the air flow in the vicinity. The heat radiation contacts the ball head frame, and the heat is absorbed by the ball head frame and transferred to the heat dissipation copper rod. The heat dissipation copper rod transfers the heat to the coolant tank, and the coolant inside the coolant tank absorbs the heat, thereby playing a role in cooling the rotor body.

[0018] In the present invention, the ball head frame can drive the bottom ball to move through the connecting column. The bottom ball drives the movable plate to deflect and rotate inside the joint frame. The movement of the movable plate drives the compression of the fourth springs on both sides. The fourth springs can provide a reaction force to the ball head frame, and when the movable plate is stressed, it can drive the arc-shaped slide frame to rotate slightly. The arc-shaped slide frame rotates in the slide rail frame, and the arc-shaped slide frame is subject to the reaction forces of the third springs on both sides. When there are machining errors or installation deviations in the rotor body, the bottom ball can swing around the ball center to automatically adjust the clamping direction, making the ball head frame always perpendicular to the rotor axis, and the flexible connection can improve the connection accuracy between the ball head frame and the rotor body. Moreover, the adjustable ball head frame can improve the clamping speed when clamping the rotor body without the need for repeated adjustment like traditional fixtures. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the holding bottom plate of the present invention;

[0020] Figure 2 is a schematic structural view of the electromagnetic clamping sleeve of the present invention;

[0021] Figure 3 is a schematic structural view of the guide post of the present invention;

[0022] Figure 4 is a schematic structural view of the rotation arm of the present invention;

[0023] Figure 5 It is a schematic diagram of the overall structure of the support frame assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the pusher of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the joint frame of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the ball head frame of the present invention;

[0027] Figure 9 It is a schematic diagram of the structure of the bottom ball of the present invention.

[0028] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows: 1, support bottom plate; 11, support frame assembly; 12, support shell; 13, rotor body; 14, positioning groove; 16, electromagnetic clamping sleeve; 18, guide post; 19, first spring; 2, silicon steel sheet iron core; 21, enameled wire winding; 22, rotating arm; 23, fixed shaft; 24, gear; 25, cooling chamber; 26, drive assembly; 27, pusher; 28, strip gear; 29, auxiliary pusher plate; 3, coolant groove; 31, joint frame; 32, connecting column; 33, ball head frame; 34, movable plate; 35, heat dissipation copper rod; 36, bottom ball; 37, slide rail frame; 38, arc slide frame; 39, support frame; 4, third spring; 41, fourth spring. Specific embodiments

[0029] The following further describes the embodiments of the present invention in detail with reference to the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0030] Please refer to Figures 1-9, the present invention provides a magnetic rotor holding structure for printing, which includes a holding base plate 1 and a rotor body 13. Above the holding base plate 1, there is a support shell 12. Inside the support shell 12, there are at least two electromagnetic clamping sleeves 16. Inside the electromagnetic clamping sleeves 16, there are multiple silicon steel sheet cores 2 that can control the suspension position of the rotor body 13. At both ends of the rotor body 13, there are two groups of holding frame assemblies 11, and each group of holding frame assemblies 11 is installed on the holding base plate 1. Below each group of holding frame assemblies 11 on the same side, there is a horizontally movable bar-shaped gear 28, and the bar-shaped gear 28 is used to adjust the rotation angle of the holding frame assemblies 11. Each group of holding frame assemblies 11 includes a rotating arm 22. At the end of each rotating arm 22, there is a joint frame 31. At the end of each joint frame 31, there is a ball head frame 33 movably arranged, and the ball head frame 33 is used to position the rotor body 13. When installing the rotor body 13, insert the rotor body 13 into the electromagnetic clamping sleeve 16, start the electromagnetic clamping sleeve 16, and the magnetic force of the multiple silicon steel sheet cores 2 and enameled wire windings 21 inside the electromagnetic clamping sleeve 16 is adjusted to control the suspension of the rotor body 13. When the rotor body 13 is running at high speed, the four groups of holding frame assemblies 11 at the front and rear ends of the rotor body 13 can be used for clamping to prevent the rotor body 13 from deflecting and keep the center of the rotor body 13. A dual mechanism of positioning and clamping is adopted, so that the operation and disassembly of the rotor body 13 can be quickly maintained.

[0031] Each silicon steel sheet core 2 is fixed to the inner wall of the electromagnetic clamping sleeve 16. On the surface of each silicon steel sheet core 2, there is an enameled wire winding 21, and every two silicon steel sheet cores 2 are electromagnetically connected. Inside the electromagnetic clamping sleeve 16, there are three concentrically oriented guide posts 18. The end of each guide post 18 is located inside the electromagnetic clamping sleeve 16, and between the end of each guide post 18 and the inside of the electromagnetic clamping sleeve 16, a first spring 19 is fixedly installed. A positioning groove 14 is opened on the outer ring of the rotor body 13. The end of each guide post 18 is conical, and the end of each guide post 18 is located inside the positioning groove 14. After the rotor body 13 is installed inside multiple electromagnetic clamping sleeves 16, the positioning groove 14 opened on the surface of the rotor body 13 is located between the three guide posts 18. The three guide posts 18 can help the rotor body 13 for initial positioning, and at the ends of the three guide posts 18, there are first springs 19, which can help the guide posts 18 to complete the initial center alignment. Subsequently, the silicon steel sheet cores 2 and enameled wire windings 21 drive the rotor body 13, which can effectively shorten the positioning time. And after the electromagnetic clamping sleeve 16 is powered off, the three guide posts 18 can play an auxiliary supporting role to prevent the rotor body 13 from suddenly dropping and being damaged by collision.

[0032] A fixed shaft 23 is fixedly installed at the bottom corner of each rotating arm 22, and a gear 24 is fixedly installed outside each fixed shaft 23. Below each gear 24 is meshed with a strip gear 28. At the end of each strip gear 28, an auxiliary push plate 29 is fixedly installed. A push frame 27 is movably attached between the two auxiliary push plates 29. A drive assembly 26 is provided on the back of the push frame 27. The threaded rod at the end of the output shaft of the drive assembly 26 penetrates outside the push frame 27. A second spring is fixedly installed between the other end of each strip gear 28 and the side wall of the holding bottom plate 1. The motor part of each drive assembly 26 is fixed on the holding bottom plate 1. Each auxiliary push plate 29 is triangular, each push frame 27 is isosceles trapezoidal, and the inclined surface of each auxiliary push plate 29 is in contact with the waist surface of the push frame 27. When in use, the two ball head frames 33 are located on both sides of the rotor body 13. The user needs to apply silicone grease on the surface of the ball head frames 33. Start the drive assembly 26 (the drive assembly 26 consists of a motor and a threaded rod, and the threaded rod is fixed at the end of the output shaft of the drive assembly 26). The drive assembly 26 drives the push frame 27 to move through the threaded rod. The movement of the push frame 27 drives the two side auxiliary push plates 29 to move. The two side auxiliary push plates 29 move synchronously and drive the strip gears 28 on both sides to move to both sides. The movement of the strip gears 28 will drive the second springs at the ends to compress. The gear 24 is meshed with the strip gear 28. Therefore, the gear 24 will drive the rotating arm 22 to rotate. The two rotating arms 22 synchronously drive the ball head frames 33 to rotate and approach the rotor body 13. The ball head frames 33 contact the surface of the rotor body 13 to complete clamping and positioning. During subsequent shutdown maintenance, it can also prevent the rotor body 13 from shaking. When the equipment is being transported, debugged or on standby, the holding frame assembly 11 provides mechanical locking to prevent the rotor body 13 from falling due to vibration or accidental touch. When installing the rotor body 13, the symmetric clamping of the holding frame assembly 11 can assist in completing precise alignment and improve the assembly efficiency. When the rotor body 13 is operating, start the drive assembly 26 to open the two side ball head frames 33, and the two side ball head frames 33 are separated from the rotor body 13;

[0033] A connecting column 32 is fixedly installed at the lower end of each ball head bracket 33. A bottom ball 36 is fixedly installed at the lower end of each connecting column 32. Each bottom ball 36 is movably installed inside the joint bracket 31. A movable plate 34 is fixedly installed at the lower end of each bottom ball 36. A heat dissipation copper rod 35 is installed through the ball head bracket 33, the connecting column 32 and the bottom ball 36. The heat dissipation copper rod 35 is installed in the coolant tank 3 inside the rotating arm 22. A coolant tank 3 is provided inside each rotating arm 22. A sealing cover is provided at the end of the coolant tank 3. A cooling chamber 25 is provided on the side of each rotating arm 22. The cooling chamber 25 is communicated with the coolant tank 3 inside the rotating arm 22 through a hose. During use, when the rotor body 13 rotates at a high speed, each ball head bracket 33 is separated from the rotor body 13 but is relatively close to the rotor body 13. On the one hand, it can prevent the rotor body 13 from falling when it is eccentric. On the other hand, heat is generated when the rotor body 13 rotates, and the rotation of the rotor body 13 will drive the air flow in the vicinity. The heat radiation contacts the ball head bracket 33, and the heat is absorbed by the ball head bracket 33 and transferred to the heat dissipation copper rod 35. The heat dissipation copper rod 35 transfers the heat to the coolant tank 3, and the coolant inside the coolant tank 3 absorbs the heat, so as to play a role in cooling the rotor body 13.

[0034] A slide rail bracket 37 is fixedly installed near the bottom opening of the joint bracket 31. Arc-shaped slide brackets 38 are rotatably installed on both inner walls of the slide rail bracket 37. Support brackets 39 are fixedly installed in front of and behind the slide rail bracket 37. A third spring 4 is fixedly installed between both sides of each support bracket 39 and the arc-shaped slide bracket 38. A fourth spring 41 is fixedly installed between both sides of each movable plate 34 and the two arc-shaped slide brackets 38. During use, when the ball head bracket 33 clamps the rotor body 13, the ball head bracket 33 can drive the bottom ball 36 to move through the connecting column 32. The bottom ball 36 drives the movable plate 34 to deflect and rotate inside the joint bracket 31. The movable plate 34 moves to drive the fourth springs 41 on both sides to be compressed. The fourth spring 41 can provide a reaction force to the ball head bracket 33. And when the movable plate 34 is stressed, it can drive the arc-shaped slide bracket 38 to rotate slightly. The arc-shaped slide bracket 38 rotates inside the slide rail bracket 37, and the arc-shaped slide bracket 38 will be subject to the reaction forces of the third springs 4 on both sides. When there are machining errors or installation deviations in the rotor body 13, the bottom ball 36 can swing around the ball center, automatically adjust the clamping direction, make the ball head bracket 33 always perpendicular to the rotor axis, and has a flexible connection, which can improve the connection accuracy between the ball head bracket 33 and the rotor body 13. And when the adjustable ball head bracket 33 clamps the rotor body 13, it can improve the clamping speed and does not need to be adjusted repeatedly like a traditional fixture.

[0035] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A magnetic rotor holding structure for printing, comprising a holding bottom plate (1) and a rotor body (13), characterized in that: Above the supporting bottom plate (1), there is a supporting shell (12). Inside the supporting shell (12), there is an electromagnetic clamping sleeve (16). Inside the electromagnetic clamping sleeve (16), there are multiple silicon steel sheet cores (2) that can control the suspension position of the rotor body (13). At both ends of the rotor body (13), there are two groups of supporting frame assemblies (11), and each group of supporting frame assemblies (11) is installed on the supporting bottom plate (1). Below each group of supporting frame assemblies (11) on the same side, there is a horizontally movable strip gear (28). The strip gear (28) is used to adjust the rotation angle of the supporting frame assembly (11). Each group of supporting frame assemblies (11) includes a rotating arm (22). At the end of each rotating arm (22), there is a joint frame (31). At the end of each joint frame (31), there is a ball head frame (33) movably arranged, and the ball head frame (33) is used to position the rotor body (13).

2. The magnetic rotor holding structure for printing according to claim 1, wherein Each of the silicon steel sheet cores (2) is fixed to the inner wall of the electromagnetic clamping sleeve (16). On the surface of each silicon steel sheet core (2), there is an enameled wire winding (21), and every two silicon steel sheet cores (2) are electromagnetically connected. Inside the electromagnetic clamping sleeve (16), there are three concentrically oriented guide posts (18).

3. The magnetic rotor holding structure for printing according to claim 2, wherein, The end of each guide post (18) is located inside the electromagnetic clamping sleeve (16), and a first spring (19) is fixedly installed between the end of each guide post (18) and the inside of the electromagnetic clamping sleeve (16).

4. The magnetic rotor holding structure for printing according to claim 3, wherein, A positioning groove (14) is formed in the outer ring of the rotor body (13). The end of each guide post (18) is conical, and the end of each guide post (18) is located inside the positioning groove (14).

5. The magnetic rotor holding structure for printing according to claim 1, characterized in that, At the bottom corner of each rotating arm (22), a fixed shaft (23) is fixedly installed, and a gear (24) is fixedly installed outside each fixed shaft (23). Below each gear (24), it meshes with the strip gear (28).

6. The magnetic rotor holding structure for printing according to claim 5, characterized in that At the end of each strip gear (28), an auxiliary push plate (29) is fixedly installed. Between the two auxiliary push plates (29), a push frame (27) is movably fitted. On the back of the push frame (27), there is a drive assembly (26). The threaded rod at the end of the output shaft of the drive assembly (26) passes through the outside of the push frame (27).

7. The magnetic rotor holding structure for printing according to claim 6, wherein Between the other end of each strip gear (28) and the side wall of the supporting bottom plate (1), a second spring is fixedly installed. The motor part of each drive assembly (26) is fixed on the supporting bottom plate (1). Each auxiliary push plate (29) is triangular, each push frame (27) is isosceles trapezoidal, and the inclined surface of each auxiliary push plate (29) is in contact with the waist surface of the push frame (27).

8. The magnetic rotor holding structure for printing according to claim 7, characterized in that, Inside each rotating arm (22), there is a coolant groove (3), and there is a sealing cover at the end of the coolant groove (3). On the side of each rotating arm (22), there is a cooling chamber (25), and the cooling chamber (25) is connected to the coolant groove (3) inside the rotating arm (22) through a hose.

9. The magnetic rotor holding structure for printing according to claim 8, wherein, A connecting column (32) is fixedly installed at the lower end of each ball head bracket (33). A bottom ball (36) is fixedly installed at the lower end of each connecting column (32). Each bottom ball (36) is movably installed inside the joint bracket (31). A movable plate (34) is fixedly installed at the lower end of each bottom ball (36). A heat dissipation copper rod (35) is installed through the ball head bracket (33), the connecting column (32) and the bottom ball (36), and the heat dissipation copper rod (35) is installed in a coolant tank (3) inside the rotating arm (22).

10. The magnetic rotor holding structure for printing according to claim 9, wherein, A slide rail bracket (37) is fixedly installed near the bottom opening of the joint bracket (31). Arc-shaped slide brackets (38) are rotatably installed on both inner walls of the slide rail bracket (37). Support brackets (39) are fixedly installed at the front and back of the slide rail bracket (37). A third spring (4) is fixedly installed between the two sides of each support bracket (39) and the arc-shaped slide bracket (38). A fourth spring (41) is fixedly installed between the two sides of each movable plate (34) and the two arc-shaped slide brackets (38).

Images