A graphite mold polishing machine based on CNC processing

Abstract

The invention discloses a graphite mold polishing machine based on CNC processing, relates to the technical field of mold polishing, solves the problem that the continuity is poor in the process of polishing batch graphite molds, which affects the processing efficiency of batch graphite molds. The machine comprises a hollow base, a plurality of mechanical arms distributed at equal distances are installed on the outer side of the hollow base, polishing heads of different models are respectively installed on the plurality of mechanical arms, and also comprises a feeding mechanism for conveying the graphite molds to be polished; the invention installs the feeding mechanism, and a turntable in the feeding mechanism rotates to convey the plurality of graphite molds, so that the plurality of graphite molds can be polished by polishing heads of different models in turn, which is conducive to continuously performing polishing work at different stages on the graphite molds, so that the continuity is strong in the process of polishing the batch graphite molds, and the polishing efficiency of the batch graphite molds is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of mold polishing, in particular to a graphite mold polishing machine based on CNC processing. Background Art

[0002] CNC processed graphite molds are mainly used in the hot bending process of 3D glass. Graphite materials are chemically stable, not easily infiltrated by molten glass, and will not change the composition of glass. Graphite materials have good heat shock resistance and small size changes with temperature. Therefore, they have become an indispensable mold material in glass manufacturing in recent years. In the process of graphite mold processing, in order to improve the finish of the graphite mold and make it easy to demold the graphite mold, the cavity of the graphite mold will be polished.

[0003] The polishing steps of graphite molds are divided into three stages: rough grinding, medium grinding and fine grinding. The rough grinding stage usually uses a grinding disc with a lower mesh number, which is mainly used to remove larger flaws and unevenness on the mold surface; the medium grinding stage further refines the mold surface, removes more subtle defects, and improves the surface flatness; the fine grinding stage uses a grinding disc with a higher mesh number, so that the graphite mold finally reaches a high-finish surface. However, the existing polishing work of batch graphite molds at different stages usually involves polishing all molds in one stage, replacing the grinding disc on the equipment, and then polishing all graphite molds in the next stage, or transferring the graphite molds that have been polished in one stage to other polishing equipment for the next stage of polishing, which makes the continuity of the batch graphite mold polishing process poor, affecting the processing efficiency of batch graphite molds. Summary of the invention

[0004] The object of the present invention is to provide a graphite mold polishing machine based on CNC machining to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A graphite mold polishing machine based on CNC processing comprises a hollow base, a plurality of mechanical arms distributed at equal distances are installed on the outer side of the hollow base, polishing heads of different models are respectively installed on the plurality of mechanical arms, and a feeding mechanism is also included, which is used to transport the graphite mold to be polished, and the feeding mechanism is installed on the upper end of the hollow base; a positioning seat, which is used to position the graphite mold, and the positioning seat is installed on the feeding mechanism, and the number of the positioning seats is multiple groups and is distributed at equal distances around the circumference; a supporting component, which is used to support the polished graphite mold to be separated from the positioning seat, and the supporting component is installed between the feeding mechanism and the hollow base; a positioning component, which is used to prevent the positioning seat from being separated from the feeding mechanism, and the positioning component is installed on the inner side of the hollow base.

[0007] Preferably, the feeding mechanism includes a turntable rotatably mounted on the upper end of the hollow base, a driving motor is fixedly mounted at the center of the lower end of the turntable, and the connection between the driving motor and the hollow base is a fixed connection, a plurality of balls equidistantly distributed in a circle are movably embedded in the lower end of the turntable, an arc rolling groove is provided at the upper end of the hollow base corresponding to the plurality of balls, and the connection between the ball and the hollow base is a rolling contact.

[0008] Preferably, the support assembly includes a support plate movably embedded in the center of the positioning seat, and the lower end surface of the support plate is movably fitted with the upper end surface of the turntable, and the lower end of the support plate is fixedly installed with two symmetrically distributed hinged seats, and the inner side of the hinged seat is hingedly installed with a support rod 1, and the two support rods 1 are symmetrically distributed on the left and right, the support rod 1 passes through the turntable, and the connection method between the support rod 1 and the turntable is a plug-in connection, and the support plate can rotate back and forth under the action of the support rod 1 and the support rod 2.

[0009] Preferably, the outer sides of the two support rods 1 are fixedly sleeved with a connecting plate, and the connecting plate is located on the lower side of the turntable, the outer sides of the support rods 1 are movably sleeved with a spring 1, and the two ends of the spring 1 are respectively movably abutted against the turntable and the connecting plate, the spring 1 is used to drive the support plate to move downward, the lower end of the support rod 1 is movably embedded with a ball 2, and the lower end of the support plate is also movably abutted against two symmetrically distributed support rods 2, and the two support rods 2 are symmetrically distributed front to back.

[0010] Preferably, the second support rod passes through the turntable, and the connection between the second support rod and the turntable is a plug-in connection, a washer is fixedly sleeved on the outer side of the second support rod, and the washer is movably embedded in the upper end of the turntable, the washer can prevent the second support rod from detaching from the turntable, and a ball three is movably embedded at the lower end of the second support rod, an arc-shaped support strip one is fixedly installed on the inner bottom surface of the hollow base, and the arc-shaped support strip one is installed at the unloading station of the hollow base, and both ends of the arc-shaped support strip one are provided with a bevel portion one.

[0011] Preferably, the ball 2 is in rolling contact with the arc support bar 1 through the bevel portion 1, two symmetrically distributed supporting bevel blocks are fixedly installed on the left end of the arc support bar 1, and the ball 3 is in rolling contact with the arc support bar 1 through the supporting bevel block, the upper end of the arc support bar 1 is fixedly installed with the arc support bar 2, and the arc support bar 2 is located at the lower side of the support rod 2 close to the center of the turntable, the arc support bar 2 can drive a support rod 2 to move upward, and an arc movable groove is opened at the upper end of the arc support bar 1, and the arc movable groove is located at the lower side of the support rod 2 away from the center of the turntable.

[0012] Preferably, the lengths of the arc-shaped support bar 2 and the arc-shaped movable groove are equal, and both ends of the arc-shaped support bar 2 and the arc-shaped movable groove are provided with a bevel portion 2, and the upper end of the arc-shaped support bar 1 is provided with a plurality of grooves distributed at equal distances corresponding to the lower side of the ball 2, and the ball 2 is in rolling contact with the arc-shaped support bar 1 through the plurality of the arc-shaped movable grooves, and a material guide plate is fixedly installed on the outer side of the hollow base corresponding to its unloading station, baffles are installed on the left and right sides of the material guide plate, and a conveyor belt is installed on the lower side of the material guide plate.

[0013] Preferably, two symmetrically distributed pins are fixedly installed on the lower end of the positioning seat, and the two pins are symmetrically distributed on the left and right. A baffle is fixedly connected to the lower end of the pin, and the connection between the pin and the baffle and the turntable is a plug-in connection. The positioning assembly includes two U-shaped pins that are respectively movably sleeved on the outside of the two pins, and the two U-shaped pins are symmetrically distributed on the left and right. The U-shaped pins resist the baffle to prevent the positioning seat from detaching from the turntable.

[0014] Preferably, two symmetrically distributed limit sliders are fixedly installed on the upper end of the U-shaped pin, and the limit slider is slidably connected to the turntable through a limit straight groove, and spring two is fixedly installed on the side of the two U-shaped pins away from each other, and a positioning block is fixedly connected to the end of the spring two away from the U-shaped pin, the positioning block can prevent the U-shaped pin from detaching from the turntable, and the connection between the positioning block and the turntable is a fixed connection, and hinge seats two are fixedly installed on the front sides of the two U-shaped pins.

[0015] Preferably, an oblique support rod is hingedly installed on the inner side of the articulated seat two, and an articulated seat three is hingedly installed on the two oblique support rods away from the articulated seat two, and a push rod is fixedly embedded on the articulated seat three away from the center of the turntable, and the push rod can drive the two U-shaped pins away from each other through the oblique support rod, and a ball four is movably embedded on the end of the push rod away from the articulated seat three, an arc-shaped baffle is fixedly installed on the inner side wall of the hollow base, and the arc-shaped baffle is installed at the loading station of the hollow base, and two ends of the arc-shaped baffle are provided with beveled edge portions three, and the ball four is in rolling contact with the arc-shaped baffle through the beveled edge portion three.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention installs a feeding mechanism, and the turntable in the feeding mechanism rotates to transport multiple graphite molds, so that the multiple graphite molds can be polished by polishing heads of different models in turn, which is conducive to continuously polishing the graphite molds at different stages, so that the continuity is strong in the process of polishing batch graphite molds, and the polishing efficiency of batch graphite molds is effectively improved.

[0018] 2. The present invention installs a support assembly, and when the graphite mold rotates to the unloading station, the support rod 1 and the support rod 2 in the support assembly can support the graphite mold to move up and away from the positioning seat, and in the process of the support rod 1 and the support rod 2 supporting the graphite mold to continue to rotate, the support plate can be driven to tilt under the action of the two support rods 2, which is conducive to the polished graphite mold automatically sliding onto the conveyor belt through the guide plate, so as to facilitate the automatic collection of the polished graphite mold.

[0019] 3. The present invention installs a positioning assembly. Two U-shaped pins in the positioning assembly can lock the positioning seat through a pin rod and a baffle when the positioning seat is located at the polishing station and the unloading station to prevent the positioning seat from being displaced during the polishing and unloading processes. The positioning assembly can unlock the positioning seat at the loading station, thereby facilitating personnel to replace different types of positioning seats according to different graphite molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the separation of the graphite mold and the positioning seat of the present invention;

[0022] Figure 3 This is a schematic diagram of removing the turntable on the hollow base of the present invention;

[0023] Figure 4 It is a side cross-sectional schematic diagram of the hollow base and the turntable of the present invention;

[0024] Figure 5 This is an overall schematic diagram of the supporting state of the graphite mold by the supporting assembly of the present invention;

[0025] Figure 6 It is an overall schematic diagram of the support assembly of the present invention;

[0026] Figure 7 This is a schematic diagram of the bottom side of the positioning seat of the present invention;

[0027] Figure 8 It is an overall schematic diagram of the positioning assembly on the bottom side of the positioning seat of the present invention;

[0028] Fig. 9 For the present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0029] Fig.10 For the present invention Figure 3 A magnified schematic diagram of point B in the middle.

[0030] In the figure: 1. hollow base; 2. mechanical arm; 3. polishing head; 4. turntable; 5. driving motor; 6. ball bearing 1; 7. positioning seat; 8. support plate; 9. hinge seat 1; 10. support rod 1; 11. connecting plate; 12. spring 1; 13. ball bearing 2; 14. support rod 2; 15. washer; 16. ball bearing 3; 17. arc support bar 1; 18. support oblique block; 19. arc support bar 2; 20. arc movable groove; 21. groove; 22. pin rod; 23. baffle; 24. U-shaped pin; 25. limit slider; 26. spring 2; 27. positioning block; 28. hinge seat 2; 29. ​​oblique support rod; 30. hinge seat 3; 31. push rod; 32. ball bearing 4; 33. arc baffle; 34. guide plate; 35. conveyor belt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1-Figure 4 , Fig. 9 , Fig.10 The graphite mold polishing machine based on CNC processing shown in the figure includes a hollow base 1, a plurality of mechanical arms 2 distributed at equal distances are installed on the outer side of the hollow base 1, and polishing heads 3 of different types are installed on the plurality of mechanical arms 2 respectively. It also includes a feeding mechanism for conveying the graphite mold to be polished, and the feeding mechanism is installed on the upper end of the hollow base 1; a positioning seat 7 for positioning the graphite mold, and the positioning seat 7 is installed on the feeding mechanism. The number of the positioning seats 7 is multiple groups and is distributed at equal distances around the circumference; a supporting assembly for supporting the polished graphite mold to separate from the positioning seat 7, and the supporting assembly is installed between the feeding mechanism and the hollow base 1; a positioning assembly for preventing the positioning seat 7 from separating from the feeding mechanism, and the positioning assembly is installed on the inner side of the hollow base 1.

[0033] The feeding mechanism includes a turntable 4 rotatably mounted on the upper end of the hollow base 1, a driving motor 5 is fixedly mounted at the center of the lower end of the turntable 4, and the connection between the driving motor 5 and the hollow base 1 is a fixed connection, a plurality of ball bearings 6 equidistantly distributed in a circle are movably embedded in the lower end of the turntable 4, arc rolling grooves are provided at the upper end of the hollow base 1 corresponding to the plurality of ball bearings 6, and the connection between the ball bearings 6 and the hollow base 1 is rolling contact.

[0034] Working principle: When in use, the personnel place the graphite mold to be processed in the positioning seat 7 at the loading station, and the driving motor 5 drives the turntable 4 to rotate, and the turntable 4 drives multiple graphite molds to rotate. When the graphite mold rotates to a mechanical arm 2 on the far right, the mechanical arm 2 drives the polishing head 3 to perform the first stage of polishing on the graphite mold. At the same time, other mechanical arms 2 drive other types of polishing heads 3 to perform other stages of polishing on other graphite molds, which is conducive to continuously performing different stages of polishing on the graphite mold, so that the continuity is strong in the process of polishing batches of graphite molds, and the polishing efficiency of batches of graphite molds is effectively improved.

[0035] Example 2: Please refer to Figure 3-Figure 6 The present embodiment further explains the first embodiment, the support assembly includes a support plate 8 movably embedded in the center of the positioning seat 7, and the lower end surface of the support plate 8 is movably fitted with the upper end surface of the turntable 4, and the lower end of the support plate 8 is fixedly installed with two symmetrically distributed hinge seats 9, and the inner side of the hinge seat 9 is hingedly installed with a support rod 10, and the two support rods 10 are symmetrically distributed on the left and right, the support rod 10 passes through the turntable 4, and the connection between the support rod 10 and the turntable 4 is a plug-in connection, and the support plate 8 can rotate back and forth under the action of the support rod 10 and the support rod 2 14.

[0036] The outer sides of the two support rods 10 are fixedly sleeved with a connecting plate 11, and the connecting plate 11 is located at the lower side of the turntable 4. The outer sides of the support rods 10 are movably sleeved with a spring 12, and the two ends of the spring 12 are movably abutted with the turntable 4 and the connecting plate 11 respectively. The spring 12 is used to drive the support plate 8 to move downward. A ball 2 13 is movably embedded in the lower end of the support rod 10. The lower end of the support plate 8 is also movably abutted with two symmetrically distributed support rods 2 14, and the two support rods 2 14 are symmetrically distributed front to back.

[0037] The support rod 14 passes through the turntable 4, and the connection between the support rod 14 and the turntable 4 is a plug-in connection. A washer 15 is fixedly sleeved on the outer side of the support rod 14, and the washer 15 is movably embedded in the upper end of the turntable 4. The washer 15 can prevent the support rod 14 from detaching from the turntable 4. A ball 3 16 is movably embedded in the lower end of the support rod 14. An arc-shaped support strip 17 is fixedly installed on the inner bottom surface of the hollow base 1, and the arc-shaped support strip 17 is installed at the unloading station of the hollow base 1. Both ends of the arc-shaped support strip 17 are provided with a bevel portion 1.

[0038] Ball 2 13 is in rolling contact with arc-shaped support bar 17 through bevel portion 1, two symmetrically distributed supporting inclined blocks 18 are fixedly installed on the left end of arc-shaped support bar 17, and ball 3 16 is in rolling contact with arc-shaped support bar 17 through supporting inclined blocks 18, arc-shaped support bar 2 19 is fixedly installed on the upper end of arc-shaped support bar 17, and arc-shaped support bar 2 19 is located on the lower side of a support rod 2 14 close to the center of the turntable 4, arc-shaped support bar 2 19 can drive a support rod 2 14 to move upward, and an arc-shaped movable groove 20 is provided at the upper end of arc-shaped support bar 17, and the arc-shaped movable groove 20 is located on the lower side of a support rod 2 14 away from the center of the turntable 4.

[0039] The lengths of the arc-shaped support bar 19 and the arc-shaped movable groove 20 are equal, and both ends of the arc-shaped support bar 19 and the arc-shaped movable groove 20 are provided with a bevel portion 2. The upper end of the arc-shaped support bar 17 is provided with a plurality of grooves 21 distributed at equal distances corresponding to the lower side of the ball 13, and the ball 13 is in rolling contact with the arc-shaped support bar 17 through a plurality of arc-shaped movable grooves 20. A material guide plate 34 is fixedly installed on the outer side of the hollow base 1 corresponding to its unloading station, baffles are installed on the left and right sides of the material guide plate 34, and a conveyor belt 35 is installed on the lower side of the material guide plate 34.

[0040] In this embodiment: when the turntable 4 drives the graphite mold to rotate to the unloading station, the ball 2 13 and the ball 3 16 are respectively in rolling contact with the bevel part 1 of the arc-shaped support bar 17 and the support bevel block 18, so that the two support rods 10 and the two support rods 2 14 move up synchronously, and the polished graphite mold is lifted up by the support plate 8 to separate from the positioning seat 7. In the process of the support plate 8 lifting the graphite mold and continuing to rotate, the lifted graphite mold will move to the upper side of the guide plate 34. When the two support rods 2 14 are respectively rotated to the arc-shaped support bar 2 19 and the arc-shaped movable groove 20, a support rod 2 14 close to the center of the turntable 4 will move up under the action of the arc-shaped support bar 2 19, and a support rod 2 14 away from the center of the turntable 4 will move down under the action of the arc-shaped movable groove 20, so that the support plate 8 will rotate in the direction of the guide plate 34, so that the support plate 8 is in an inclined state, which is conducive to the graphite mold sliding through the support plate 8 and the guide plate 34 to the conveyor belt 35 for the next processing step;

[0041] When the graphite mold cannot automatically slide off the support plate 8, the ball 2 13 at the lower end of the support rod 10 rolls in contact with the arc-shaped support strip 17 through a plurality of grooves 21, and driven by the compression force of the spring 12, the support plate 8 can move back and forth up and down, thereby assisting the graphite mold to slide off the support plate 8; when the ball 2 13 and the ball 3 16 roll off the arc-shaped support strip 17, the support plate 8 will move back and reset under the drive of the compression force of the spring 12.

[0042] Example 3: Please refer to Figure 3 , Figure 7 and Figure 8 The present embodiment further explains the first embodiment, two symmetrically distributed pins 22 are fixedly installed on the lower end of the positioning seat 7, and the two pins 22 are symmetrically distributed on the left and right. A baffle 23 is fixedly connected to the lower end of the pin 22, and the connection between the pin 22 and the baffle 23 and the turntable 4 is a plug-in connection. The positioning assembly includes two U-shaped pins 24 that are respectively movably sleeved on the outer sides of the two pins 22, and the two U-shaped pins 24 are symmetrically distributed on the left and right. The U-shaped pins 24 resist the baffle 23 to prevent the positioning seat 7 from detaching from the turntable 4.

[0043] Two symmetrically distributed limit sliders 25 are fixedly installed on the upper end of the U-shaped pin 24, and the limit slider 25 is slidably connected to the turntable 4 through a limit straight groove. A spring 26 is fixedly installed on the side of the two U-shaped pins 24 away from each other, and a positioning block 27 is fixedly connected to the end of the spring 26 away from the U-shaped pin 24. The positioning block 27 can prevent the U-shaped pin 24 from detaching from the turntable 4, and the connection between the positioning block 27 and the turntable 4 is a fixed connection. A hinge seat 28 is fixedly installed on the front side of the two U-shaped pins 24.

[0044] An oblique support rod 29 is hingedly installed on the inner side of the articulated seat 28, and an articulated seat 30 is hingedly installed on the two oblique support rods 29 away from the articulated seat 28. A push rod 31 is fixedly embedded on the side of the articulated seat 30 away from the center of the turntable 4, and the push rod 31 can drive the two U-shaped pins 24 away from each other through the oblique support rod 29. A ball 4 32 is movably embedded on the end of the push rod 31 away from the articulated seat 3 30. An arc-shaped baffle 33 is fixedly installed on the inner side wall of the hollow base 1, and the arc-shaped baffle 33 is installed at the loading station of the hollow base 1. Beveled edge portions 3 are arranged at both ends of the arc-shaped baffle 33, and the ball 4 32 is in rolling contact with the arc-shaped baffle 33 through the beveled edge portion 3.

[0045] In this embodiment: when the graphite mold is located at the polishing station and the blanking station, the two U-shaped pins 24 will be driven by the compression elastic force of the spring 26 to press against the pin rod 22 and the baffle 23, so as to lock the graphite mold, which can prevent the positioning seat 7 from being displaced during the polishing of the graphite mold, affecting the polishing accuracy of the graphite mold, and preventing the graphite mold from driving the positioning seat 7 to move up together during the upward movement of the graphite mold at the blanking station;

[0046] When the positioning seat 7 rotates to the loading station, the ball four 32 at the end of the push rod 31 rolls in contact with the arc-shaped baffle 33 through the oblique edge three of the arc-shaped baffle 33. During this process, the push rod 31 drives the two U-shaped pins 24 to move away from each other through the hinge seat 28 and the diagonal support rod 29. The two U-shaped pins 24 will detach from the pin rod 22 and the baffle 23 in the process of moving away from each other. At this time, the personnel can disassemble and assemble the positioning seat 7 at will, so as to facilitate the replacement of different types of positioning seats 7 according to different types of graphite molds.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphite mold polishing machine for CNC processing, comprising a hollow base (1), a plurality of mechanical arms (2) distributed at equal distances are installed on the outer side of the hollow base (1), and polishing heads (3) of different models are respectively installed on the plurality of mechanical arms (2), characterized in that: Also includes: A feeding mechanism, used for conveying the graphite mold to be polished, the feeding mechanism being installed at the upper end of the hollow base (1); A positioning seat (7) for positioning the graphite mold, the positioning seat (7) being mounted on the feeding mechanism, the positioning seats (7) being provided in a plurality of groups and being equidistantly distributed around the circumference; A support assembly, used for supporting the polished graphite mold to separate from the positioning seat (7), the support assembly being installed between the feeding mechanism and the hollow base (1); A positioning assembly, used to prevent the positioning seat (7) from being separated from the feeding mechanism, the positioning assembly being installed on the inner side of the hollow base (1); The feeding mechanism comprises a turntable (4) rotatably mounted on the upper end of the hollow base (1), a driving motor (5) being fixedly mounted at the center of the lower end of the turntable (4), and the driving motor (5) and the hollow base (1) are connected in a fixed manner, and a plurality of circumferentially equidistantly distributed balls (6) are movably embedded in the lower end of the turntable (4), and the connection between the balls (6) and the hollow base (1) is in rolling contact; Two symmetrically distributed pins (22) are fixedly mounted on the lower end of the positioning seat (7), and the two pins (22) are symmetrically distributed left and right. A baffle (23) is fixedly connected to the lower end of the pin (22), and the connection between the pin (22) and the baffle (23) and the turntable (4) is a plug-in connection. The positioning assembly comprises two U-shaped pins (24) which are movably sleeved on the outer sides of the two pins (22), and the two U-shaped pins (24) are symmetrically distributed left and right. Two symmetrically distributed limiting sliders (25) are fixedly installed on the upper end of the U-shaped pin (24), and the limiting sliders (25) are slidably connected to the rotating disk (4) through limiting straight grooves. A second spring (26) is fixedly installed on the side of the two U-shaped pins (24) away from each other, and a positioning block (27) is fixedly connected to the end of the second spring (26) away from the U-shaped pin (24), and the connection between the positioning block (27) and the rotating disk (4) is a fixed connection. A second hinge seat (28) is fixedly installed on the front side of the two U-shaped pins (24); The inner side of the hinge seat 2 (28) is hingedly installed with an oblique support rod (29), and the two oblique support rods (29) are hingedly installed with an hinge seat 3 (30) away from the hinge seat 2 (28). The hinge seat 3 (30) is fixedly embedded with a push rod (31) on the side away from the center of the turntable (4), and the push rod (31) is movably embedded with a ball 4 (32) at one end away from the hinge seat 3 (30). An arc-shaped baffle (33) is fixedly installed on the inner side wall of the hollow base (1), and the arc-shaped baffle (33) is installed at the loading station of the hollow base (1). The two ends of the arc-shaped baffle (33) are provided with beveled edge portions 3, and the ball 4 (32) is in rolling contact with the arc-shaped baffle (33) through the beveled edge portion 3.

2. A graphite mold polishing machine based on CNC machining according to claim 1, characterized in that: The support assembly comprises a support plate (8) movably embedded in the center of the positioning seat (7), and the lower end surface of the support plate (8) is movably fitted with the upper end surface of the turntable (4), and two symmetrically distributed hinge seats (9) are fixedly installed on the lower end of the support plate (8), and the inner side of the hinge seat (9) is hingedly installed with a support rod (10), and the two support rods (10) are symmetrically distributed on the left and right, and the support rod (10) passes through the turntable (4), and the connection between the support rod (10) and the turntable (4) is a plug-in connection.

3. A graphite mold polishing machine based on CNC machining according to claim 2, characterized in that: The outer sides of the two support rods (10) are fixedly sleeved with a connecting plate (11), and the connecting plate (11) is located at the lower side of the rotating disk (4); the outer sides of the support rods (10) are movably sleeved with a spring (12), and the two ends of the spring (12) are movably abutted with the rotating disk (4) and the connecting plate (11) respectively; the lower end of the support rod (10) is movably embedded with a ball (13); the lower end of the support plate (8) is also movably abutted with two symmetrically distributed support rods (14), and the two support rods (14) are symmetrically distributed front to back.

4. A graphite mold polishing machine based on CNC machining according to claim 3, characterized in that: The second support rod (14) passes through the turntable (4), and the connection between the second support rod (14) and the turntable (4) is a plug-in connection. A washer (15) is fixedly sleeved on the outer side of the second support rod (14), and the washer (15) is movably embedded in the upper end of the turntable (4). A ball bearing (16) is movably embedded in the lower end of the second support rod (14). An arc-shaped support strip (17) is fixedly installed on the inner bottom surface of the hollow base (1), and the arc-shaped support strip (17) is installed at the unloading station of the hollow base (1). Both ends of the arc-shaped support strip (17) are provided with a bevel portion (1).

5. The graphite mold polishing machine for CNC machining according to claim 4, characterized in that: The second ball (13) is in rolling contact with the arc-shaped support bar (17) through the first bevel portion, and two symmetrically distributed support bevel blocks (18) are fixedly installed on the left end of the arc-shaped support bar (17), and the third ball (16) is in rolling contact with the arc-shaped support bar (17) through the support bevel blocks (18). The upper end of the arc-shaped support bar (17) is fixedly installed with an arc-shaped support bar (19), and the arc-shaped support bar (19) is located at the lower side of the second support rod (14) close to the center of the turntable (4), and the upper end of the arc-shaped support bar (17) is provided with an arc-shaped movable groove (20), and the arc-shaped movable groove (20) is located at the lower side of the second support rod (14) away from the center of the turntable (4).

6. The graphite mold polishing machine for CNC machining according to claim 5, characterized in that: The arc-shaped support bar 2 (19) and the arc-shaped movable groove (20) are of equal length, and both ends of the arc-shaped support bar 2 (19) and the arc-shaped movable groove (20) are provided with a second bevel portion, and the upper end of the arc-shaped support bar 1 (17) is provided with a plurality of grooves (21) distributed at equal distances corresponding to the lower side of the ball 2 (13), and the ball 2 (13) is in rolling contact with the arc-shaped support bar 1 (17) through the plurality of arc-shaped movable grooves (20), and a material guide plate (34) is fixedly installed on the outer side of the hollow base (1) corresponding to its unloading station, and a conveyor belt (35) is installed on the lower side of the material guide plate (34).

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