Inner surface grinding device for crystallizer copper pipe
By designing a grinding device for the inner surface of the crystallizer copper tube, the one-way movement of the inner wall of the crystallizer copper tube is achieved by combining the photoelectric switch and push-pull rod, the problem of long grinding cycle in the existing technology is solved, processing efficiency is improved and waste chips is derived, and the rapid and efficient inner wall grinding is achieved.
Patent Information
- Application Number
- CN202510561284.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the grinding operation of the inner wall of the crystallizer copper tube needs to be extended-grinded-removed in steps, resulting in a long processing cycle and reducing processing efficiency.
A crystallizer copper tube inner surface grinding device is designed, and the turntable rotation is controlled by using photoelectric switches, and the push and pull rod cooperates with auxiliary components to realize one-way grinding in the unidirectional movement of the pipe fittings. Through the design of support components and jaws, rapid and efficient inner wall grinding is achieved, and waste chips are exported during the grinding process.
It realizes rapid and efficient grinding of the inner wall of the pipe fittings, reduces the grinding cycle, improves processing efficiency, and effectively exports waste chips during the grinding process, improving the stability and versatility of the equipment.
Smart Images
Figure CN120382392A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of copper pipe grinding, and particularly relates to an inner surface grinding device for a mold copper pipe. Background Art
[0002] The mold copper pipe is a core component on a continuous casting machine, which plays a role in solidifying molten steel. Its material is usually phosphor-deoxidized copper and silver copper, which has excellent thermal conductivity and mechanical strength.
[0003] The process that the mold copper pipe experiences before grinding is as follows: A pre-prepared solid copper rod is heated, and then the heated solid copper rod is placed on a heavy pressing device. The heavy pressing device will extrude the solid copper pipe into a copper pipe with a hollow center and a small hollow on the bottom (the circumference of the small hollow on the bottom is smaller than the circumference of the hollow center circle) by extrusion, and then the inner wall of the copper pipe is ground to make the inner wall of the copper pipe smooth.
[0004] In the current traditional inner wall grinding operation of pipe fittings, the commonly adopted operation mode is to accurately insert the grinding head into the pipe fitting first, and then remove the grinding head from the pipe fitting after completing the inner wall grinding process. This step-by-step operation process makes each grinding operation need to go through a complete "insertion - grinding - removal" cycle, resulting in an increase in the overall processing cycle and a reduction in processing production efficiency. Summary of the Invention
[0005] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides an inner surface grinding device for a mold copper pipe, which can effectively solve the problems of long cycle and low processing efficiency in the inner wall grinding process of pipe fittings in the prior art.
[0006] To achieve the above object, the present invention is realized through the following technical solutions: The present invention provides an inner surface grinding device for a mold copper pipe, including a processing platform, on which a conveying frame is provided, and further including: A grinding head, on which a driving shaft is provided, and two groups of auxiliary components are respectively provided on both sides of the driving shaft and are used to connect with a driving device to rotate the grinding head and extend into the pipe for grinding; A supporting component for supporting and driving the grinding head, the supporting component includes a fixed frame, on which a plurality of push-pull rods for clamping the auxiliary components are movably installed, and a driving gear for driving the rotation of the auxiliary components is provided on one group of the push-pull rods. A turntable is rotatably installed on the fixed frame, and an arc-shaped guide groove for guiding the push-pull rods to move towards the auxiliary components is provided on the turntable; And photoelectric switches are arranged on the fixed frame and located on both sides of the turntable, so as to drive the turntable to rotate and drive the push-pull rod to move toward the auxiliary component when the two groups of photoelectric switches receive signals at the same time. In other cases, the turntable is driven to rotate and the push-pull rod is driven to move away from the auxiliary component.
[0007] According to some embodiments of the present invention, the support components are provided in two groups and are located on both sides of the grinding head respectively, the distance between the two groups of support components corresponds to the distance between the two groups of auxiliary components, and the length of the pipe to be processed is less than the distance between the two groups of support components.
[0008] According to some embodiments of the present invention, a limiting guide groove is provided on the fixed frame, and the push-pull rod is slidably set on the fixed frame and extends into the limiting guide groove, the push-pull rod is provided with a guide column, and the guide column extends into the arc guide groove on the turntable, and the fixed frame is provided with a motor for driving the turntable to rotate.
[0009] According to some embodiments of the present invention, one end of the arc guide groove is close to the inner diameter side of the turntable, and the other end is close to the outer diameter side of the turntable, and a clearance groove is provided on the turntable, and the clearance groove is provided in multiple groups and corresponds to the number of push-pull rods.
[0010] According to some embodiments of the present invention, the push-pull rods are provided in N groups, and the N groups of push-pull rods are distributed in a central circular array of the turntable, the driving gear is located on the push-pull rod below the auxiliary component, and the remaining push-pull rods are provided with clamping claws on the side close to the auxiliary component, and the clamping claws are provided with semi-mouth-shaped grooves.
[0011] According to some embodiments of the present invention, the auxiliary component includes a driven gear arranged on a drive shaft, a fixed ring is provided on the driven gear, and multiple groups of blades distributed in a circular array are installed on the fixed ring, and multiple groups of balls are provided on the side of the clamp close to the fixed ring.
[0012] According to some embodiments of the present invention, a bearing is provided between the fixed ring and the driven gear, and a plurality of groups of limiting tooth grooves are provided on the outer peripheral surface of the bearing and distributed in a circular array. A movable ring is elastically installed on the side of the fixed ring close to the ball, and a movable limiting part that cooperates with the movable ring is slidably installed on the fixed ring.
[0013] According to some embodiments of the present invention, a triangular guide slope is provided on the side of the movable limit member close to the movable ring. When the movable ring is squeezed and compressed back, the movable limit member is squeezed up and disengaged from the limiting tooth groove on the bearing, and the movable limit member descends and extends into the limiting tooth groove.
[0014] Beneficial Effects Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: 1. By adjusting the direction of the motor-driven turntable rotation based on the received optoelectronic switch signal, the relative position between the push-pull rod and the auxiliary component is changed. While fixing the auxiliary component, the driving gear is used to drive the driving shaft and the grinding head to rotate, thereby grinding the inner wall of the pipe fitting. Cooperating with two support components with a gap greater than the length of the pipe fitting to be processed, it is possible to perform the grinding operation on the inner wall of the pipe fitting in a single pass under the condition of one-way movement of the pipe fitting, without the need to reset the pipe fitting after grinding or remove the grinding head from the inner wall of the pipe fitting, achieving fast and efficient grinding, reducing the grinding cycle of the pipe fitting, and improving the grinding processing efficiency of the pipe fitting; 2. Through the clamping cooperation between the jaws on the push-pull rod and the fixed ring, when the ball presses the movable ring, the movable limit member is pushed away from the limit tooth groove to cancel the restriction between the fixed ring and the bearing. When clamping the auxiliary component, the fixed ring and the driven gear can rotate relative to each other. Conversely, the relative rotation of the driven gear and the fixed ring is restricted, and then the waste chips generated during grinding are exported through the blades, which can improve the stability of the auxiliary component as a support function. At the same time, when the auxiliary component is in a non-support function, the fixed ring is driven to rotate to export the internal waste chips, further realizing the multi-function of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention during pipe fitting grinding; Figure 3 It is a schematic diagram of the exploded structure of the support component of the present invention; Figure 4 It is a sectional view of the turntable of the present invention; Figure 5 It is a schematic diagram of the structure of the jaws of the present invention; Figure 6 It is an exploded schematic diagram of the structure of the auxiliary component of the present invention; Figure 7 It is a partial sectional view of the auxiliary component of the present invention; Figure 8 For the present invention Figure 7 The enlarged view at A in
[0017] Reference numerals: 1, processing platform; 11, conveying rack; 2, support assembly; 21, fixed frame; 211, limit guiding groove; 212, photoelectric switch; 213, motor; 22, turntable; 221, arc guiding groove; 222, relief groove; 23, push-pull rod; 231, guiding column; 24, jaw; 241, ball; 25, driving gear; 3, grinding head; 31, driving shaft; 32, auxiliary assembly; 321, driven gear; 322, bearing; 3221, limit tooth groove; 323, fixed ring; 3231, movable ring; 3232, blade; 3233, movable limit member. Detailed implementation manners
[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0019] The present invention will be further described below with reference to the embodiments.
[0020] Refer to the attached Figures 1-8 , an inner surface grinding device for a crystallizer copper tube, including a processing platform 1, a conveying rack 11 is arranged on the processing platform 1, rollers are equidistantly arranged on the conveying rack 11, and the rollers are used to reduce the friction when the pipe fittings move. At the same time, a telescopic roller for pressing against the pipe fittings is also installed above the conveying rack 11. After being extruded by the driving mechanism, the pipe fittings move horizontally on the conveying rack 11. This is a relatively conventional prior art and will not be elaborated here too much. It further includes: A grinding head 3, a driving shaft 31 is arranged on the grinding head 3, and the grinding head 3 and the driving shaft 31 can be detachably installed. Since the grinding head 3 is a consumable part, it is convenient for subsequent replacement and maintenance when the grinding head 3 has worked for a period of time, and when adapting to pipe fittings of different diameters, the corresponding size of the grinding head 3 can be replaced. And two groups of auxiliary assemblies 32 are arranged on the driving shaft 31 and are respectively located on both sides of the grinding head 3. The auxiliary assemblies 32 are used to connect with the driving device to rotate the grinding head 3 and extend into the pipe for grinding. The driving component drives the two groups of auxiliary assemblies 32 to drive the grinding head 3 to rotate, so as to polish the inner wall of the pipe fitting. With the cooperation of the two groups of auxiliary assemblies 32, when the pipe fitting moves and sleeves on one group of auxiliary assemblies 32, the auxiliary assembly 32 at the other end drives the grinding head 3 to continuously rotate and grind the inner wall of the pipe fitting. When the pipe fitting continues to move and disengages from the first group of auxiliary assemblies 32 and sleeves on the second group of auxiliary assemblies 32, the first group of auxiliary assemblies 32 is connected with the driving device to drive the grinding head 3 to continuously rotate, realizing continuous grinding of the pipe fitting; The support assembly 2 for supporting and driving the grinding head 3 is provided with two groups and is respectively located on both sides of the grinding head 3. The distance between the two groups of support assemblies 2 corresponds to the distance between the two groups of auxiliary assemblies 32, and the length of the pipe to be processed is less than the distance between the two groups of support assemblies 2. By setting the gap size between the two groups of support assemblies 2 to be greater than the length size of the pipe fitting to be processed, when the pipe fitting to be processed enters one of the support assemblies 2, the push-pull rod 23 on this support assembly 2 cancels the clamping of the auxiliary assembly 32. At the same time, the driving gear 25 arranged on the push-pull rod 23 also stops driving the auxiliary assembly 32, while the push-pull rod 23 on the other support assembly 2 clamps and drives the auxiliary assembly 32. When the pipe fitting moves into the support assembly 2 on the other side, the pipe fitting will first disengage from the first support assembly 2. At this time, the push-pull rod 23 on the first support assembly 2 clamps and drives the auxiliary assembly 32 again, and then the push-pull rod 23 on the second support assembly 2 cancels the clamping and driving of the auxiliary assembly 32. Each support assembly 2 includes a fixed frame 21. A plurality of push-pull rods 23 for clamping the auxiliary assembly 32 are movably installed on the fixed frame 21. There are N groups of push-pull rods 23, and the N groups of push-pull rods 23 are annularly arranged around the center of the turntable 22. The driving gear 25 is located on the push-pull rod 23 below the auxiliary assembly 32. Claw 24 is provided on one side of the remaining push-pull rods 23 close to the auxiliary assembly 32, and a semi-circular groove is provided on the claw 24. When the claw 24 is sleeved on the auxiliary assembly 32, while a plurality of claws 24 move towards the auxiliary assembly 32 at the same time to stably clamp the auxiliary assembly 32, due to the setting of the semi-circular groove of the claw 24, it can also prevent the driving shaft 31 from shifting in the horizontal direction. A limit guiding groove 211 is provided on the fixed frame 21, and the push-pull rod 23 is slidably arranged on the fixed frame 21 and extends into the limit guiding groove 211. And a driving gear 25 for driving the auxiliary assembly 32 to rotate is provided on one of the push-pull rods 23. The driving gear 25 is coaxially installed with a driving device, and this driving device starts when the driving gear 25 contacts the auxiliary assembly 32, thereby driving the driving gear 25 to rotate to drive the auxiliary assembly 32 to rotate, and further driving the driving shaft 31 and the grinding head 3 to rotate to realize the grinding of the inner wall of the pipe fitting. A turntable 22 is rotatably installed on the fixed frame 21, and an arc-shaped guiding groove 221 for guiding the push-pull rod 23 to move towards the auxiliary assembly 32 is provided on the turntable 22. A guiding column 231 is provided on the push-pull rod 23, and the guiding column 231 extends into the arc-shaped guiding groove 221 on the turntable 22. A motor 213 for driving the turntable 22 to rotate is provided on the fixed frame 21. One end of the arc-shaped guiding groove 221 is close to the inner diameter side of the turntable 22, and the other end is close to the outer diameter side of the turntable 22. And a relief groove 222 is provided on the turntable 22. There are multiple groups of relief grooves 222 corresponding to the number of push-pull rods 23. When the motor 213 drives the turntable 22 to rotate, it will guide the push-pull rod 23 to approach and move away from the auxiliary assembly 32 in cooperation with the arc-shaped guiding groove 221.By controlling the forward and reverse rotation of the motor 213, the push rod 23 is driven to move towards the auxiliary component 32 for clamping and fixing, and the push rod 23 is driven to move away from the auxiliary component 32 to release the clamping; And the photoelectric switches 212 are arranged on the fixed frame 21 and located on both sides of the turntable 22 respectively, so as to drive the turntable 22 to rotate and drive the push rod 23 to move towards the auxiliary component 32 when the two groups of photoelectric switches 212 receive signals simultaneously. In other cases, the turntable 22 is driven to rotate and drive the push rod 23 to move away from the auxiliary component 32. When the pipe fitting does not enter the support component 2, the two groups of photoelectric switches 212 located on both sides of the turntable 22 can receive signals. At this time, the motor 213 drives the turntable 22 to rotate. Under the cooperation of the arc-shaped guide groove 221 and the guide post 231, the push rod 23 is driven to move towards the auxiliary component 32 and clamp. When the pipe fitting enters the support component 2 and blocks the signal reception of the photoelectric switch 212, the motor 213 drives the turntable 22 to rotate in the reverse direction. Then, under the cooperation of the arc-shaped guide groove 221 and the guide post 231, the push rod 23 is driven to move away from the auxiliary component 32, thereby canceling the clamping and driving of the auxiliary component 32.
[0021] In the above technical solution, when the pipe fitting to be processed does not enter the two support components 2, the photoelectric switches 212 located on both sides of the turntable 22 normally receive signals. The motor 213 drives the turntable 22 to rotate, and under the cooperation of the arc-shaped guide groove 221 and the guide post 231, the push rod 23 is moved towards the auxiliary component 32. While fixing the auxiliary component 32, the driving gear 25 is cooperated to drive the driving shaft 31 and the grinding head 3 to rotate, so as to grind the inner wall of the pipe fitting. When the pipe fitting enters the support component 2, the signal reception of the photoelectric switch 212 is blocked. Once the two groups of photoelectric switches 212 cannot receive signals simultaneously, the motor 213 will drive the turntable 22 to rotate in the reverse direction. Then, under the cooperation of the arc-shaped guide groove 221 and the guide post 231, the push rod 23 is driven to move away from the auxiliary component 32, thereby canceling the clamping and driving of the auxiliary component 32. When the pipe fitting enters from one side, through the special setting of the support component 2, it is possible to realize the state of unidirectional movement of the pipe fitting, and the inner wall of the pipe fitting can be ground in one pass without the operation of resetting the pipe fitting after grinding or taking out the grinding head 3 from the inner wall of the pipe fitting, realizing fast and efficient grinding, reducing the grinding cycle of the pipe fitting, and improving the grinding processing efficiency of the pipe fitting.
[0022] Further, the auxiliary component 32 includes a driven gear 321 disposed on the drive shaft 31. A fixing ring 323 is provided on the driven gear 321, and a plurality of groups of blades 3232 are mounted on the fixing ring 323 and are distributed in an annular array. When the auxiliary component 32 and the grinding head 3 are located inside the pipe fitting, the grinding head 3 grinds the inner wall of the pipe fitting, and the auxiliary component 32 rotates rapidly and cooperates with the blades 3232 to discharge the waste chips generated by grinding. On one side of the clamping jaw 24 close to the fixing ring 323, a plurality of groups of balls 241 are provided, and balls 241 are provided on the surfaces of the clamping jaw 24 in contact with the fixing ring 323. Not all of them are drawn in the attached drawings, only a part is shown. Through the plurality of groups of balls 241, the friction between the clamping jaw 24 and the fixing ring 323 can be reduced, thereby reducing energy loss.
[0023] In addition, a bearing 322 is provided between the fixing ring 323 and the driven gear 321, and a plurality of groups of limiting tooth grooves 3221 are provided on the outer peripheral surface of the bearing 322 and are distributed in an annular array. The friction between the driven gear 321 and the fixing ring 323 is reduced through the bearing 322. Since a movable ring 3231 is elastically mounted on one side of the fixing ring 323 close to the balls 241, and a movable limiting member 3233 cooperating with the movable ring 3231 is slidably mounted on the fixing ring 323, the movable limiting member 3233 is elastically mounted in 323 and always faces the limiting tooth grooves 3221. A triangular guide slope is provided on one side of the movable limiting member 3233 close to the movable ring 3231. When the movable ring 3231 is squeezed and compressed back, the movable limiting member 3233 is pushed up and disengages from the limiting tooth grooves 3221 on the bearing 322. On the contrary, the movable limiting member 3233 descends and extends into the limiting tooth grooves 3221. When the movable ring 3231 is squeezed by the balls 241, the movable ring 3231 will squeeze the movable limiting member 3233 to disengage it from the limiting tooth grooves 3221. When the fixing ring 323 is clamped and fixed by the clamping jaw 24, the relative rotation of the fixing ring 323 and the driven gear 321 can be maintained. On the contrary, when the clamping jaw 24 disengages from the fixing ring 323, the squeezing of the balls 241 on the movable ring 3231 is cancelled, and at this time, the movable limiting member 3233 resets and is inserted into the limiting tooth grooves 3221 again to limit the relative rotation of the driven gear 321 and the fixing ring 323, and further cooperate with the blades 3232 to discharge the waste chips generated during grinding.
[0024] In the above technical solution, when the jaw 24 on the push rod 23 clamps the fixed ring 323, the ball 241 will squeeze the movable ring 3231, thereby pushing the movable limiting member 3233 away from the limiting tooth groove 3221, so as to cancel the restriction between the fixed ring 323 and the bearing 322. That is, when the clamping auxiliary assembly 32 is clamped, the fixed ring 323 and the driven gear 321 can rotate relative to each other. On the contrary, when the jaw 24 is disengaged from the fixed ring 323, the ball 241 cancels the extrusion of the movable ring 3231. At this time, the movable limiting member 3233 resets and is inserted into the limiting tooth groove 3221 again to limit the relative rotation of the driven gear 321 and the fixed ring 323, and then cooperates with the blade 3232 to export the waste chips generated during grinding, which can improve the stability of the auxiliary assembly 32 when it functions as a support, and at the same time, when the auxiliary assembly 32 functions as a non-support, it drives the fixed ring 323 to rotate to export the internal waste chips, further enhancing the diversification and multi-functionality of the equipment.
[0025] Working principle: The pipe fittings to be processed are conveyed from the conveying frame 11 and sequentially enter the two groups of support assemblies 2. When the pipe fittings do not enter the support assembly 2, the photoelectric switches 212 on both sides of the turntable 22 normally receive signals. The motor 213 drives the turntable 22 to rotate, and under the cooperation of the arc-shaped guide groove 221 and the guide post 231, the push rod 23 is moved towards the auxiliary assembly 32 to fix the auxiliary assembly 32. When the pipe fittings enter the support assembly 2, the signal reception of the photoelectric switch 212 is blocked, and the motor 213 will drive the turntable 22 to rotate in the reverse direction. Under the cooperation of the arc-shaped guide groove 221 and the guide post 231, the push rod 23 is driven to move away from the auxiliary assembly 32 to cancel the clamping and driving of the auxiliary assembly 32. After the pipe fittings enter, the other support assembly 2 will still clamp and drive the grinding head 3 to rotate to realize the grinding of the inner wall of the pipe fittings. When the pipe fittings leave the first group of support assemblies 2 and enter the second group of support assemblies 2, the first group of support assemblies 2 will clamp and drive the grinding head 3, while the second group of support assemblies 2 will cancel the clamping and driving of the grinding head 3. Finally, as the pipe fittings continue to move until the pipe fittings move out of the second group of support assemblies 2, the grinding mechanism is completed. It can realize the grinding operation of the inner wall of the pipe fittings in a single pass in the state of the one-way movement of the pipe fittings, without the need to reset the pipe fittings after grinding or take out the grinding head 3 from the inner wall of the pipe fittings. At the same time, during grinding, the auxiliary assembly 32 located inside the pipe fittings will limit the relative rotation with the driven gear 321 under the cooperation of the movable ring 3231 and the movable limiting member 3233, so as to cooperate with the blade 3232 to export the internal waste chips.
[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.
Claims
1. An inner surface grinding device for a crystallizer copper tube, comprising a processing platform (1), wherein a conveying rack (11) is arranged on the processing platform (1), and it is characterized in that, Further comprising: A grinding head (3), on which a drive shaft (31) is provided, and two sets of auxiliary components (32) are provided on the drive shaft (31) and are respectively located on both sides of the grinding head (3). The auxiliary components (32) are used to connect with a driving device to rotate the grinding head (3) and extend into the pipe for grinding; A support component (2) for supporting and driving the grinding head (3), the support component (2) includes a fixed frame (21), on which a plurality of push-pull rods (23) for clamping the auxiliary components (32) are movably installed, and a driving gear (25) for driving the auxiliary components (32) to rotate is provided on one set of the push-pull rods (23). A turntable (22) is rotatably installed on the fixed frame (21), and an arc-shaped guide groove (221) for guiding the push-pull rod (23) to move towards the auxiliary component (32) is provided on the turntable (22); And photoelectric switches (212) provided on the fixed frame (21) and located on both sides of the turntable (22) respectively, which are used to drive the turntable (22) to rotate and drive the push-pull rod (23) to move towards the auxiliary component (32) when the two photoelectric switches (212) receive signals simultaneously, and drive the turntable (22) to rotate and drive the push-pull rod (23) to move away from the auxiliary component (32) in other cases.
2. The inner surface grinding device for a crystallizer copper tube according to claim 1, wherein, Two sets of the support components (2) are provided and are respectively located on both sides of the grinding head (3). The distance between the two sets of support components (2) corresponds to the distance between the two sets of auxiliary components (32), and the length of the pipeline to be processed is less than the distance between the two sets of support components (2).
3. The inner surface grinding device of a crystallizer copper tube according to claim 1, characterized in that, A limit guide groove (211) is provided on the fixed frame (21), and the push-pull rod (23) is slidably arranged on the fixed frame (21) and extends into the limit guide groove (211). A guide post (231) is provided on the push-pull rod (23), and the guide post (231) extends into the arc-shaped guide groove (221) on the turntable (22). A motor (213) for driving the turntable (22) to rotate is provided on the fixed frame (21).
4. The inner surface grinding device of a mold copper tube according to claim 3, characterized in that, One end of the arc-shaped guide groove (221) is close to the inner diameter side of the turntable (22), and the other end is close to the outer diameter side of the turntable (22). A plurality of relief grooves (222) are provided on the turntable (22) and correspond to the number of the push-pull rods (23).
5. The inner surface grinding device of a crystallizer copper tube according to claim 1, characterized in that, N sets of the push-pull rods (23) are provided, and the N sets of the push-pull rods (23) are distributed in a circular array centered on the turntable (22). The driving gear (25) is located on the push-pull rod (23) below the auxiliary component (32). Claw jaws (24) are provided on one side of the remaining push-pull rods (23) close to the auxiliary component (32), and a semi-mouth-shaped groove is provided on the claw jaws (24).
6. The inner surface grinding device for a crystallizer copper tube according to claim 5, characterized in that, The auxiliary component (32) includes a driven gear (321) provided on the drive shaft (31), a fixed ring (323) is provided on the driven gear (321), and a plurality of blades (3232) are installed on the fixed ring (323) and are distributed in a circular array. A plurality of balls (241) are provided on one side of the claw jaw (24) close to the fixed ring (323).
7. The inner surface grinding device of a mold copper tube according to claim 6, characterized in that, A bearing (322) is provided between the fixed ring (323) and the driven gear (321), and a plurality of groups of limiting tooth grooves (3221) are provided on the outer peripheral surface of the bearing (322) and are distributed in an annular array. An active ring (3231) is elastically installed on one side of the fixed ring (323) close to the ball (241), and an active limiting member (3233) cooperating with the active ring (3231) is slidably installed on the fixed ring (323).
8. The inner surface grinding device of a mold copper tube according to claim 7, characterized in that, One side of the active limiting member (3233) close to the active ring (3231) is provided with a triangular guide slope. When the active ring (3231) is squeezed and compressed back, it squeezes the active limiting member (3233) to rise and disengage from the limiting tooth groove (3221) on the bearing (322). On the contrary, the active limiting member (3233) descends and extends into the limiting tooth groove (3221).