A graphite crucible arc-edge polishing device

Abstract

The present invention provides a graphite crucible arc-edge polishing device, which relates to the technical field of polishing and includes: a working station base, a driving motor is fixedly installed on the left side inside the working station base; feed screws are rotatably installed on the left and right sides of the top of the working station base; clamping guide grooves are formed on the left and right sides at the top end inside the working station base; force-bearing clamping blocks are slidably installed inside the clamping guide grooves; positioning clamping plates are fixedly installed on the inner sides of the force-bearing clamping blocks. When the polishing base and the replaceable grinding disc are in the stationary position of the non-working state, the locking of the replaceable grinding disc by the limiting block can be automatically released, so as to facilitate the easy replacement of the replaceable grinding disc when not in use, and solve the problem that although the fasteners can effectively ensure the stability of the polishing assembly during use, they also significantly increase the complexity and time consumption in the disassembly and replacement process and reduce the convenience of the polishing assembly in maintenance operations.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing, and particularly to a polishing device for the arc edge of a graphite crucible. Background Art

[0002] Graphite crucibles have the characteristics of high temperature resistance, strong heat conduction performance, good corrosion resistance, etc., and have a long service life, a small thermal expansion coefficient at high temperatures, and a certain strain capacity for rapid cooling and heating. The inner arc edge of the graphite crucible needs to be polished using a polishing device, mainly because the polished inner wall of the crucible is smoother, which can effectively reduce the leakage and adhesion of the molten metal liquid, improve the fluidity and castability of the metal, ensure the smooth outflow of the metal liquid, and thus improve the practicality and production efficiency of the graphite crucible.

[0003] During the operation of the existing graphite crucible polishing device, most of its polishing components are securely installed at the predetermined positions of the device by means of fasteners. However, considering that the polishing components are consumables, after a certain period of use, necessary disassembly and replacement are required. Although the fasteners effectively ensure the stability of the polishing components during use, they also significantly increase the complexity and time consumption during the disassembly and replacement process, which undoubtedly reduces the convenience of the polishing components during maintenance operations. Summary of the Invention

[0004] The present invention relates to a polishing device for the arc edge of a graphite crucible. Through the mutual cooperation of multiple structures, when the polishing base and the replaceable grinding disc are in a stationary state, that is, when not in use, the positioning of the limiting block on the replaceable grinding disc can be automatically cancelled, and before the polishing base and the replaceable grinding disc descend to prepare to contact the workpiece and grind, the limiting block will automatically position the replaceable grinding disc again. In this way, it not only ensures the convenience of replacing the replaceable grinding disc when not in use, but also ensures the stability of the replaceable grinding disc during use. Moreover, this polishing device can not only automatically position the replaceable grinding disc when the polishing base descends, but also push the force-bearing clamp block inward through the cooperation of corresponding structures during the descending process, so that it drives the positioning clamping plate to move inward, thereby positioning the crucible body through the inward movement of the two positioning clamping plates. While ensuring the sufficient stability of the crucible body during the polishing process, it also eliminates the need for the staff to perform exclusive positioning of the crucible body, directly omitting a preparatory step in the polishing work and improving the use convenience of this polishing device.

[0005] In the first aspect of the present invention, a graphite crucible arc-edge polishing device is provided, specifically including: a working station base, with a driving motor fixedly installed on the left side inside the working station base; a feed screw rod rotatably installed on the left and right sides at the top of the working station base; clamping guide grooves opened on the left and right sides at the top end inside the working station base; a force-bearing clamping block slidably installed inside the clamping guide grooves; a positioning clamping plate fixedly installed on the inner side of the force-bearing clamping block; two travel guide plates fixedly installed on the top of the working station base; a travel guide groove opened at the bottom outside of the travel guide plate; a feed guide groove opened at the top outside of the travel guide plate; a feed slide plate slidably installed inside the feed guide groove; a polishing rotating shaft rotatably installed at the center position of the bottom of the feed slide plate; a polishing base fixedly installed at the bottom of the polishing rotating shaft; an installation guide groove opened at the bottom of the polishing base; an installation guide block slidably installed inside the installation guide groove; a limiting card slot opened on the outer wall of the installation guide block; a replaceable grinding disc fixedly installed at the bottom end of the installation guide block; a contraction guide groove opened at the top of the replaceable grinding disc; a contraction guide post slidably installed inside the contraction guide groove; a pressure-bearing push plate fixedly installed at the top of the contraction guide post; a top-pushing member fixedly installed at the bottom of the pressure-bearing push plate; a limiting clamping block slidably installed inside the polishing base; a conversion guide groove opened at the top of the limiting clamping block.

[0006] In at least some embodiments, the bottom end of the feed screw rod on the left side is connected to the output shaft of the driving motor; a synchronous sprocket is fixedly installed at the bottom position on the circumferential outer wall of the feed screw rod; the two synchronous sprockets are connected by a chain.

[0007] In at least some embodiments, a spring A is jointly embedded between the two force-bearing clamping blocks; the positioning clamping plate is in an arc structure; the outer end of the force-bearing clamping block is in an inclined structure; a limiting stop post is fixedly installed at the rear side of the top of the working station base.

[0008] In at least some embodiments, two long and short threads are opened on the circumferential outer walls of the two feed screw rods; the number of thread turns of the feed screw rod above and below is the same; the pitch of the thread above the feed screw rod is greater than the pitch of the thread below.

[0009] In at least some embodiments, the feed screw rod is installed with a top-pushing sleeve through the thread below; a top-pushing convex block is fixed at the inner end of the top-pushing sleeve; the top-pushing convex block is also slidably installed inside the travel guide groove.

[0010] In at least some embodiments, a connecting sleeve is fixedly installed on the left side of the feed slide plate; the connecting sleeve is connected to the feed screw rod through the thread above the feed screw rod; a polishing motor is fixedly installed at the center position of the top of the feed slide plate.

[0011] In at least some embodiments, a transmission bracket is fixedly installed at the center position on the inner side of the stroke guide plate; a transmission pressure wheel is rotatably installed at the inner end of the transmission bracket; the top end of the polishing rotating shaft is connected to the drive shaft of the polishing motor.

[0012] In at least some embodiments, one end of spring B is embedded at the bottom of the retractable guide post; the other end of spring B is embedded at the bottom of the retractable guide groove; the pressure-receiving push plate is of a disc-shaped structure; the top of the conversion guide groove is of an inclined structure.

[0013] In at least some embodiments, the inclined surface part of the conversion guide groove is vertically corresponding to the bottom end of the top-pushing member up and down; the inner end of the limiting block is inserted into the limiting card slot; one end of spring C is embedded at the outer end of the limiting block.

[0014] In at least some embodiments, the other end of spring C is embedded inside the polishing base; a crucible body is placed at the center position on the top of the working station base; when the polishing base is in a non-use state, the transmission pressure wheel will press down the pressure-receiving push plate.

[0015] The present invention provides a graphite crucible arc-edge polishing device, which has the following beneficial effects:

[0016] 1. Through the coordinated action of multiple structures, when the polishing base and the replaceable grinding disc are in the static position of the non-working state, this polishing device can automatically release the locking of the replaceable grinding disc by the limiting block, thus facilitating the easy replacement of the replaceable grinding disc when not in use. And when the polishing base descends with the replaceable grinding disc and is about to contact the workpiece for grinding, the limiting block can automatically reset and firmly lock the replaceable grinding disc, ensuring its stability during operation.

[0017] 2. This polishing device not only has the function of automatically locking the replaceable grinding disc during the descent of the base, but also is designed with a structural linkage mechanism, which can push the force-receiving clamping block to move inwards while descending, and drive the positioning clamping plate to move inwards synchronously. The double clamping plates tightly clamp the crucible body to achieve stable positioning of it. This design not only ensures the high stability of the crucible body during the polishing operation, but also greatly simplifies the operation process, eliminating the step of manually positioning the crucible body specifically, and directly improving the efficiency and convenience of the polishing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings:

[0021] Figure 1 Shows the schematic structural diagram of the crucible body of the present application in the unloaded state;

[0022] Figure 2 Shows the schematic structural diagram of the crucible body of the present application in the loaded state;

[0023] Figure 3 Shows the schematic partial sectional structure diagram of the working station base of the present application;

[0024] Figure 4 Shows the Figure 2 front view structural schematic diagram of the present application;

[0025] Figure 5 Shows the schematic structural diagram of the feed screw and the feed slide plate of the present application;

[0026] Figure 6 Shows the schematic structural diagram of the force-bearing clamping block and the positioning clamping plate of the present application;

[0027] Figure 7 Shows the schematic structural diagram of the replaceable grinding disc of the present application in the disassembled state;

[0028] Figure 8 Shows the schematic partial sectional structure diagram of the polishing base of the present application.

[0029] List of reference numerals:

[0030] 1. Working station base; 2. Driving motor; 3. Feed screw; 4. Synchronous sprocket; 5. Clamping guide groove; 6. Force-bearing clamping block; 7. Positioning clamping plate; 8. Spring A; 9. Limit stop post; 10. Stroke guide plate; 11. Stroke guide groove; 12. Thrust sleeve; 13. Thrust bump; 14. Feed guide groove; 15. Feed slide plate; 16. Connecting sleeve; 17. Polishing motor; 18. Polishing rotating shaft; 19. Transmission bracket; 20. Transmission pressure wheel; 21. Polishing base; 22. Installation guide groove; 23. Installation guide block; 24. Limited card slot; 25. Replaceable grinding disc; 26. Shrinkage guide groove; 27. Shrinkage guide post; 28. Spring B; 29. Compressed thrust plate; 30. Thrust member; 31. Limited clamping block; 32. Conversion guide groove; 33. Spring C; 34. Crucible body. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of 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 described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] Please refer to Figures 1 to 8 :

[0033] Embodiment 1:

[0034] The present invention provides a graphite crucible arc-edge polishing device, comprising: a working station base 1, a driving motor 2 is fixedly installed on the left side inside the working station base 1; feed screws 3 are rotatably installed on the left and right sides of the top of the working station base 1; clamping guide grooves 5 are provided on the left and right sides at the top end inside the working station base 1; force-bearing clamping blocks 6 are slidably installed inside the clamping guide grooves 5; positioning clamping plates 7 are fixedly installed on the inner sides of the force-bearing clamping blocks 6; two travel guide plates 10 are fixedly installed on the top of the working station base 1; travel guide grooves 11 are provided at the bottom outside of the travel guide plates 10; feed guide grooves 14 are provided at the top outside of the travel guide plates 10; a feed slide plate 15 is slidably installed inside the feed guide grooves 14; a polishing rotating shaft 18 is rotatably installed at the center of the bottom of the feed slide plate 15; a polishing base 21 is fixedly installed at the bottom of the polishing rotating shaft 18; an installation guide groove 22 is provided at the bottom of the polishing base 21; an installation guide block 23 is slidably installed inside the installation guide groove 22; a limiting card slot 24 is provided on the outer wall of the installation guide block 23; a replaceable grinding disc 25 is fixedly installed at the bottom end of the installation guide block 23; a contraction guide groove 26 is provided at the top of the replaceable grinding disc 25; a contraction guide post 27 is slidably installed inside the contraction guide groove 26; a pressure-receiving push plate 29 is fixedly installed at the top of the contraction guide post 27; a top-pushing member 30 is fixedly installed at the bottom of the pressure-receiving push plate 29; a limiting clamping block 31 is slidably installed inside the polishing base 21; a conversion guide groove 32 is provided at the top of the limiting clamping block 31; Manually place the crucible body 34 to be polished on the working station of the working station base 1 first, and then start the driving motor 2, so that it drives the two feed screws 3 to rotate simultaneously under the action of the synchronous sprockets 4 and the chain, and the feed screws 3 drive the connecting sleeve 16 and the feed slide plate 15 to move downward along the feed guide groove 14 through rotation and cooperation with the upper thread teeth. After moving, the driving roller 20 will cancel the top push on the pressure-receiving push plate 29, so that the pressure-receiving push plate 29 drives the top-pushing member 30 to move upward under the action of the spring B28, and the top-pushing member 30 cancels the top push on the inclined surface of the conversion guide groove 32, so that the limiting clamping block 31 moves inward under the action of the spring C33 and inserts into the inside of the limiting card slot 24, thereby realizing the positioning of the replaceable grinding disc 25 and ensuring the sufficient stability of the replaceable grinding disc 25 in the subsequent polishing work.

[0035] Embodiment 2: On the basis of Embodiment 1, the bottom end of the left feed screw rod 3 is connected to the output shaft of the driving motor 2; a synchronous sprocket 4 is fixedly installed at the bottom position of the circumferential outer wall of the feed screw rod 3; the two synchronous sprockets 4 are connected by a chain; a spring A8 is jointly embedded between the two force-bearing clamping blocks 6; the positioning clamping plate 7 is of an arc-shaped structure; the outer end of the force-bearing clamping block 6 is of an inclined structure; a limit stop post 9 is fixedly installed at the rear side of the top of the working station base 1; two long and short threads are provided on the circumferential outer walls of the two feed screw rods 3; the number of thread turns of the feed screw rod 3 above and below is the same; the pitch of the thread above the feed screw rod 3 is greater than the pitch of the thread below; the feed screw rod 3 is provided with a top push sleeve 12 through the thread below; a top push convex block 13 is fixed at the inner end of the top push sleeve 12; the top push convex block 13 is also slidably installed inside the stroke guide groove 11; a connecting sleeve 16 is fixedly installed on the left side of the feed slide plate 15; the connecting sleeve 16 is connected to the feed screw rod 3 through the thread above the feed screw rod 3; a polishing motor 17 is fixedly installed at the center position of the top of the feed slide plate 15; during the rotation of the feed screw rod 3, the feed screw rod 3 also drives the top push sleeve 12 and the top push convex block 13 to move downward by means of the thread below, so that the top push convex block 13 pushes the inclined surface of the force-bearing clamping block 6 by moving downward, enabling it to drive the positioning clamping plate 7 to move inward by force, so that the positioning clamping plate 7 realizes the clamping of the crucible body 34 by moving inward, and realizes the clamping between the replaceable grinding disc 25 and the crucible body 34 during feeding contact, ensuring the stability of the crucible body 34 during the polishing process.

[0036] Embodiment 3. On the basis of Embodiment 2, a transmission bracket 19 is fixedly installed at the center position on the inner side of the stroke guide plate 10; a transmission pressure wheel 20 is rotatably installed at the inner end of the transmission bracket 19; the top end of the polishing rotating shaft 18 is connected to the drive shaft of the polishing motor 17; one end of a spring B28 is embedded at the bottom of the contraction guide post 27; the other end of the spring B28 is embedded at the bottom of the contraction guide groove 26; the pressure receiving push plate 29 is of a disc-shaped structure; the top of the conversion guide groove 32 is of an inclined structure; the inclined surface part of the conversion guide groove 32 is vertically corresponding to the bottom end of the top push member 30; the inner end of the limiting block 31 is inserted into the inside of the limiting card slot 24; one end of a spring C33 is embedded at the outer end of the limiting block 31; the other end of the spring C33 is embedded in the inside of the polishing base 21; a crucible body 34 is placed at the center position on the top of the working base 1; when the polishing base 21 is in a non-use state, the transmission pressure wheel 20 presses down the pressure receiving push plate 29; when the replaceable grinding disc 25 contacts the arc edge inside the crucible body 34, by starting the polishing motor 17, it drives the polishing rotating shaft 18, the polishing base 21 and the replaceable grinding disc 25 to rotate, so that the replaceable grinding disc 25 realizes the polishing of the arc edge inside the crucible body 34 through rotation. After the polishing is completed, the polishing motor 17 is paused, and the drive motor 2 and the feed screw 3 are reversed to indirectly control the feed slide plate 15 to rise and restore. After restoration, the transmission pressure wheel 20 squeezes the pressure receiving push plate 29, so that the pressure receiving push plate 29 drives the top push member 30 to descend, so that the top push member 30 pushes the inclined surface of the conversion guide groove 32, and the force makes the limiting block 31 move outwards, so that the limiting block 31 disengages from the inside of the limiting card slot 24, canceling the positioning of the replaceable grinding disc 25, which is convenient for replacing the replaceable grinding disc 25 in the non-use state.

[0037] Working principle of this embodiment: During use, manually place the crucible body 34 to be polished on the working station of the working station base 1 first, and then start the driving motor 2. Under the action of the synchronous sprockets 4 and the chain, it drives the two feed screws 3 to rotate simultaneously, so that the feed screws 3 drive the connecting sleeve 16 and the feed slide plate 15 to move downward along the feed guide groove 14 through rotation and cooperation with the upper thread. After the movement, the driving pressure wheel 20 will cancel the pushing of the pressed push plate 29, so that the pressed push plate 29 drives the pushing member 30 to move upward under the action of the spring B28, and the pushing member 30 cancels the pushing of the inclined surface of the conversion guide groove 32, so that the limiting block 31 moves inward under the action of the spring C33 and is inserted into the inside of the limiting slot 24, thereby realizing the positioning of the replaceable grinding disc 25 and ensuring the sufficient stability of the replaceable grinding disc 25 during the subsequent polishing work. Moreover, during the rotation of the feed screw 3, the feed screw 3 will also drive the pushing sleeve 12 and the pushing convex block 13 to move downward by using the lower thread, so that the pushing convex block 13 pushes the inclined surface of the stress clamping block 6 by moving downward, and the stress drives the positioning clamping plate 7 to move inward, so that the positioning clamping plate 7 realizes the clamping of the crucible body 34 by moving inward, and realizes the clamping between the replaceable grinding disc 25 and the crucible body 34 during the feed contact, ensuring the stability of the crucible body 34 during the polishing process. When the replaceable grinding disc 25 contacts the arc edge inside the crucible body 34, start the polishing motor 17, which drives the polishing rotating shaft 18, the polishing base 21 and the replaceable grinding disc 25 to rotate, so that the replaceable grinding disc 25 realizes the polishing of the arc edge inside the crucible body 34 by rotating. After the polishing is completed, pause the polishing motor 17, reverse the driving motor 2 and the feed screw 3, and indirectly control the feed slide plate 15 to rise and return. After the return, the driving pressure wheel 20 will squeeze the pressed push plate 29, so that the pressed push plate 29 drives the pushing member 30 to descend, and the pushing member 30 pushes the inclined surface of the conversion guide groove 32, so that the stress drives the limiting block 31 to move outward, and the limiting block 31 disengages from the inside of the limiting slot 24, canceling the positioning of the replaceable grinding disc 25, which is convenient for replacing the replaceable grinding disc 25 in the unused state.

[0038] In this article, the following points need to be noted:

[0039] 1. The attached drawings of the embodiments of the present invention only involve the structures related to the embodiments of the present invention, and other structures can refer to the general design. [[ID=~]]

[0040] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0041] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An arc-edge polishing device for a graphite crucible, comprising: Workstation base, a driving motor is fixedly installed on the left side inside the workstation base; feed screws are rotatably installed on the left and right sides of the top of the workstation base; it is characterized in that clamping guide grooves are provided on the left and right sides at the top end inside the workstation base; force-receiving clamping blocks are slidably installed inside the clamping guide grooves; positioning clamping plates are fixedly installed on the inner sides of the force-receiving clamping blocks; two travel guide plates are fixedly installed on the top of the workstation base; travel guide grooves are provided at the bottom outside of the travel guide plates; feed guide grooves are provided at the top outside of the travel guide plates; a feed slide plate is slidably installed inside the feed guide grooves; a polishing rotating shaft is rotatably installed at the center of the bottom of the feed slide plate; a polishing base is fixedly installed at the bottom of the polishing rotating shaft; an installation guide groove is provided at the bottom of the polishing base; an installation guide block is slidably installed inside the installation guide groove; a limiting card slot is provided on the outer wall of the installation guide block; a replaceable grinding disc is fixedly installed at the bottom end of the installation guide block; a contraction guide groove is provided inside the polishing base at the top of the replaceable grinding disc; a contraction guide post is slidably installed inside the contraction guide groove; a pressure-receiving push plate is fixedly installed at the top of the contraction guide post; a pushing member is fixedly installed at the bottom of the pressure-receiving push plate; a limiting clamping block is slidably installed inside the polishing base; a conversion guide groove is provided at the top of the limiting clamping block. One end of spring B is embedded and installed at the bottom of the contraction guide post; the other end of spring B is embedded and installed at the bottom of the contraction guide groove; the pressure-receiving push plate is of a disc-shaped structure; the top of the conversion guide groove is of an inclined structure; a transmission support is fixedly installed at the center inside the travel guide plate; a transmission pressure wheel is rotatably installed at the inner end of the transmission support; the top end of the polishing rotating shaft is connected to the drive shaft of the polishing motor; the inclined part of the conversion guide groove and the bottom end of the pushing member are vertically corresponding up and down; the inner end of the limiting clamping block is inserted inside the limiting card slot; one end of spring C is embedded and installed at the outer end of the limiting clamping block; the bottom end of the feed screw on the left side is connected to the output shaft of the driving motor; a connecting sleeve is fixedly installed on the left side of the feed slide plate; the connecting sleeve is connected to the feed screw through the thread above the feed screw; a polishing motor is fixedly installed at the center of the top of the feed slide plate.

2. The arc-edge polishing device for a graphite crucible according to claim 1, characterized in that, Synchronous sprockets are fixedly installed at the bottom end positions on the circumferential outer walls of the feed screws; the two synchronous sprockets are connected by a chain.

3. The arc-edge polishing device for a graphite crucible according to claim 2, wherein, Spring A is jointly embedded between the two force-receiving clamping blocks; the positioning clamping plate is of an arc-shaped structure; the outer end of the force-receiving clamping block is of an inclined structure; a limiting stop post is fixedly installed at the rear side of the top of the workstation base.

4. The arc-edge polishing device for a graphite crucible according to claim 3, wherein, One long and one short two threads are provided on the circumferential outer walls of the two feed screws; the number of thread turns above and below the feed screw is the same; the pitch of the thread above the feed screw is greater than the pitch of the thread below the feed screw.

5. The arc-edge polishing device for a graphite crucible according to claim 4, wherein A top-pushing sleeve is installed on the feed screw through the thread below; a top-pushing convex block is fixed at the inner end of the top-pushing sleeve; the top-pushing convex block also slides inside the travel guide groove.

6. The arc-edge polishing device for a graphite crucible according to claim 5, characterized in that, The other end of the spring C is embedded and installed inside the polishing base; a crucible body is placed at the center of the top of the station base; when the polishing base is in an unused state, the driving pressure wheel will press down on the pressure push plate.

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