A device for edge flattening of sandstone paintings

Abstract

The application discloses a sandstone picture edge flattening device, and relates to the sandstone picture processing field.The device comprises a workbench for placing sandstone pictures to be processed, and a grinding wheel is arranged on the workbench to grind the edges of the sandstone pictures to be processed.The grinding wheel moves along the edges of the sandstone pictures to be processed to grind the edges of the sandstone pictures to be processed.A pressing roller is further arranged on the workbench, and the pressing roller moves at a uniform speed synchronously with the grinding wheel during the grinding operation.The pressing area of the pressing roller is always accurately corresponding to the real-time grinding position of the grinding wheel, and the following pressing design concentrates the pressing force on the top edge of the sandstone picture to be processed, which can effectively eliminate the gap between the area and the workbench surface and reduce the occurrence of the edge collapse phenomenon.Meanwhile, the pressing roller can adapt to sandstone pictures with different lengths and widths, and no adaptive components need to be replaced to adapt to sandstone pictures with different lengths.

Description

Technical Field

[0001] This invention relates to the field of sandstone painting processing, and in particular to a device for smoothing the edges of sandstone paintings. Background Technology

[0002] In the sandstone painting process, smoothing the edges of the sandstone slabs is a crucial step in ensuring the quality of the artwork. Traditional methods of edge smoothing rely heavily on manual hand-held polishing tools. This is not only labor-intensive and inefficient, but also makes it difficult to guarantee the smoothness and consistency of the edges. Especially for larger or unevenly thick sandstone slabs, manual operation is prone to defects such as cracking and denting due to unstable force, which seriously affects the subsequent creation and overall aesthetics of the sandstone painting.

[0003] Existing fixing devices mostly adopt a one-piece covering pressing structure (such as a single pressing plate), which achieves fixation by covering a large area of ​​the sandstone painting surface. This method can only be adapted to sandstone paintings of specific sizes. When processing works of different lengths and widths, it is necessary to frequently change the pressing parts of appropriate length to ensure pressing stability. The operation is cumbersome and has poor adaptability, which greatly limits the processing efficiency. The pressure of the one-piece covering pressing is dispersed on the surface of the sandstone painting, making it difficult to concentrate the pressing force on the edge area to be polished. During the polishing process, the edges are prone to gaps with the worktable due to uneven force, resulting in vibration and displacement during polishing, which in turn causes edge chipping.

[0004] Therefore, it is necessary to propose a sandstone painting edge smoothing device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a sandstone painting edge smoothing device to solve the problems of existing fixing devices that mostly adopt an integral covering pressing structure (such as a whole pressing plate), resulting in cumbersome operation, poor adaptability, low processing efficiency, and uneven pressing force.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sandstone painting edge smoothing device, comprising a worktable for placing the sandstone painting to be processed, wherein a grinding wheel for grinding the edge of the sandstone painting to be processed is provided on the worktable;

[0007] The grinding wheel moves along the edge of the sandstone painting to be processed to grind the edge of the sandstone painting;

[0008] The workbench is also equipped with a pressing roller, which is used to press against the edge of the upper surface of the sandstone painting to be processed. The pressing roller moves synchronously with the grinding wheel and is located on one side of the grinding wheel in the horizontal direction.

[0009] The top end of the workbench is provided with an electric track, a moving mechanism is slidably installed on the electric track, a fixed plate is slidably arranged on the moving mechanism, a third electric push rod is arranged at the bottom end of the side away from the sandstone picture to be processed of the fixed plate, and an extension plate is connected to one end of the third electric push rod;

[0010] A fixed block is fixed on one side of the bottom end of the extension plate, a groove is formed in the bottom end of the side close to the sandstone picture to be processed of the fixed block, a talc is arranged in the groove, a telescopic spring is fixed at one end of the inside of the groove, a pressing plate is fixed at one end of the telescopic spring, the pressing plate and the talc are movably connected at one end, and the other end of the talc is in contact with the sandstone picture to be processed.

[0011] Preferably, a polishing groove is formed in the workbench, and one end of the polishing groove corresponds to the sandstone picture to be processed;

[0012] A first spring telescopic rod is fixed at the bottom end of the fixed plate, a fixed frame is fixed at the bottom end of the first spring telescopic rod, and the lower pressing roller is rotatably connected in the fixed frame;

[0013] A third electric push rod is arranged at the bottom end of the side away from the sandstone picture to be processed of the fixed plate, an extension plate is connected to one end of the third electric push rod, a first motor is fixed on the extension plate, and the polishing wheel is fixed on the drive shaft at the bottom of the first motor.

[0014] Preferably, a pressure sensor is installed at the connecting part of the third electric push rod and the extension plate.

[0015] Preferably, two long rails are fixed on one side of the moving mechanism, a moving block is slidably installed between the two long rails, a lower pressing adsorption disc is arranged at the bottom end of the moving block, the lower pressing adsorption disc is pressed and adsorbed on the upper surface of the sandstone picture to be processed, and a second electric push rod is fixed between the moving block and the moving mechanism.

[0016] Preferably, a second motor is fixed at the top end of the moving block, the bottom drive shaft of the second motor extends out of the moving block, and a rotating disc is fixedly connected to the outside of the extending end;

[0017] A second spring telescopic rod is fixed at the bottom end of the rotating disc, the top of the lower pressing adsorption disc is fixedly connected with the second spring telescopic rod, a pump body is arranged at one side of the top end of the lower pressing adsorption disc, a cavity is formed in the inside of the lower pressing adsorption disc, a plurality of adsorption holes are formed in the bottom end of the lower pressing adsorption disc, the adsorption holes are communicated with the cavity, and the pump body is communicated with the cavity through a pipeline.

[0018] Preferably, two electric tracks are arranged, the moving mechanism comprises two electric sliders, the two electric sliders are slidably installed on the corresponding electric tracks respectively, a gas cylinder is fixed at the top end of each of the two electric sliders, a support block is fixed at the top end of the gas cylinder, and a fixed seat is fixed at the top end of the support block;

[0019] The fixed seat is rotatably connected between the two ends inside the fixed seat, a screw rod is threadedly connected to the outside of the screw rod, the screw block is slidably installed inside the fixed seat, the fixed plate is fixed to one side of the screw block, and the driving shaft of the driving motor is fixedly connected to one end of the screw rod.

[0020] Preferably, two auxiliary blocks are fixed to the sides away from the polishing groove of the electric sliding block, the two auxiliary blocks are slidably installed on the corresponding electric tracks, the opposite sides of the two auxiliary blocks are fixed with first electric push rods, the opposite ends of the two first electric push rods are fixed with push plates, and the two push plates are clamped on the two sides of the sandstone drawing to be processed.

[0021] Preferably, the workbench is provided with a telescopic groove at the top end, a third spring telescopic rod is fixed at the bottom end of the telescopic groove, a supporting plate is fixed at the top end of the third spring telescopic rod, a buffer pad is fixed at the top end of the supporting plate, and the supporting plate is arranged below the sandstone drawing to be processed.

[0022] Preferably, the inner wall of the polishing groove is provided with a suction port, a dust collector is fixed inside the workbench, and a connecting pipe is connected between the dust collector and the suction port.

[0023] The polishing groove is provided with a surrounding plate away from the sandstone drawing to be processed on the side of the top end, and the surrounding plate is fixed on the workbench.

[0024] The technical effects and advantages of the present application are as follows:

[0025] 1. In the polishing operation, the lower pressing roller moves at a uniform speed synchronously with the polishing wheel, the pressing area always accurately corresponds to the real-time polishing position of the polishing wheel, the following pressing design concentrates the pressing force on the top edge of the sandstone drawing to be processed, effectively eliminates the gap between the area and the workbench surface, reduces the occurrence of edge collapse, and at the same time, the lower pressing roller can adapt to sandstone drawings to be processed of different lengths and widths, compared with the traditional overall covering pressing, not only the application range is significantly widened, but also the pressing force is concentrated on the polishing area to prevent edge collapse and reduce the edge collapse phenomenon.

[0026] 2. The lower pressing roller is connected to the fixed frame through the first spring telescopic rod, the elastic pressure can be self-adaptively adjusted according to the slight fluctuation of the edge of the sandstone drawing, while ensuring the stability of the pressing, avoiding surface damage caused by excessive local pressure; the rotating characteristics of the roller convert sliding friction into rolling friction, further reducing the wear on the surface of the sandstone drawing, ensuring the integrity of the appearance after processing, since the lower pressing roller moves synchronously with the polishing wheel and the pressing position always corresponds to the polishing position, when the polishing wheel applies a polishing force to the edge, the lower pressing roller can provide a reverse pressing force in real time to offset part of the polishing vibration, this dynamic balance can reduce the slight displacement of the sandstone drawing due to vibration, ensuring the consistency of the polishing track.

[0027] 3. Once the position of the moving mechanism is fixed, the push plate clamps the sandstone painting to be processed from both sides under the action of the first electric push rod, while the lower roller and the lower suction plate fix the sandstone painting to be processed from above. The multi-directional fixing method can effectively prevent the sandstone painting to be processed from shifting or shaking during the grinding process, ensuring the accuracy of the grinding position and avoiding grinding deviations caused by unstable fixing.

[0028] 4. After grinding is complete, the second spring telescopic rod, being longer, will rise last. At this point, the downward suction plate continues to act as an adsorbent, causing the sandstone painting to rise slightly, thus detaching it from the worktable and support plate, preventing friction between it and the worktable during rotation. Simultaneously, the support plate extends upwards to support the bottom of the sandstone painting; if the sandstone painting falls, the support plate can also provide cushioning.

[0029] 5. The rotation of the second motor can drive the sandstone painting to be processed to rotate, which makes it convenient for different sides of the sandstone painting and the grinding groove to be ground, reducing the time for manual adjustment and improving work efficiency.

[0030] 6. The buffer pad at the top of the support plate not only prevents the sandstone painting to be processed from direct contact with the support plate, thus avoiding wear, but its own friction also effectively prevents the sandstone painting from moving after placement, laying a stable foundation for subsequent fixing and grinding. It guides operators to quickly identify the placement position, ensuring the sandstone painting is accurately placed in the correct location. When the subsequent pressure roller presses down on the sandstone painting, the support plate will retract into the telescopic groove under pressure, without interfering with the subsequent fixing and grinding process, ensuring the smoothness of the entire operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the sandstone painting edge smoothing device of the present invention.

[0032] Figure 2 This is a schematic diagram of the grinding groove and adsorption port structure of the present invention.

[0033] Figure 3 For the present invention Figure 1 Enlarged diagram of point A in the middle.

[0034] Figure 4 For the present invention Figure 2 Enlarged diagram of point B in the middle.

[0035] Figure 5 This is a schematic diagram of the structure of the first electric push rod and push plate of the present invention.

[0036] Figure 6 For the present invention Figure 5 Enlarged diagram of point C in the middle.

[0037] Figure 7 This is a schematic diagram of the structure of the expansion groove and support plate of the present invention.

[0038] Figure 8 This is a schematic diagram of the telescopic spring of the present invention.

[0039] In the diagram: 1. Workbench; 2. Vacuum cleaner; 3. Connecting pipe; 4. Electric track; 5. Moving mechanism; 6. Lead screw; 7. Fixed seat; 8. Electric slider; 9. Cylinder; 10. Support block; 11. Enclosure; 12. Grinding groove; 13. Suction port; 14. Fixed plate; 15. Extending plate; 16. First spring telescopic rod; 17. Fixed frame; 18. Lower pressure roller; 19. First motor; 20. Grinding wheel; 21. Fixed block; 22. Talc; 23. Auxiliary block; 24. First electric push rod; 25. Push plate; 26. Sandstone painting to be processed; 27. Long rail; 28. Second electric push rod; 29. ​​Moving block; 30. Second motor; 31. Turntable; 32. Second spring telescopic rod; 33. Lower pressure suction plate; 34. Pump body; 35. Telescopic groove; 36. Support plate; 37. Groove; 38. Telescopic spring; 39. Extrusion plate. Detailed Implementation

[0040] This invention provides, for example Figures 1-8 The sandstone painting edge smoothing device shown includes a workbench 1 and an electric track 4 set on the workbench 1. The electric track 4 is equipped with a moving mechanism 5, and a grinding groove 12 is opened on one side of the top of the workbench 1.

[0041] like Figure 1 , 5 As shown in Figure 7, a sandstone painting 26 to be processed is placed on the workbench 1. One end of the sandstone painting 26 to be processed faces the grinding groove 12. A telescopic groove 35 is opened at the top of the workbench 1. A third spring telescopic rod is fixed at the bottom of the telescopic groove 35. A support plate 36 is fixed at the top of the third spring telescopic rod. A buffer pad is fixed at the top of the support plate 36. The support plate 36 is located below the sandstone painting 26 to be processed.

[0042] The buffer pad at the top of the support plate 36 not only prevents the sandstone painting 26 to be processed from direct contact with the support plate 36, thus avoiding wear, but its own friction also effectively prevents the sandstone painting 26 from moving after placement, laying a stable foundation for subsequent fixing and grinding. It guides operators to quickly identify the placement position, ensuring that the sandstone painting 26 is accurately placed in the correct location. When the subsequent pressing roller 18 presses down on the sandstone painting 26, the support plate 36 will retract into the telescopic groove 35 under pressure, without interfering with the subsequent fixing and grinding process, ensuring the smoothness of the entire operation.

[0043] like Figure 1, 3 As shown in Figure 5, there are two electric tracks 4. The moving mechanism 5 includes two electric sliders 8, which are slidably installed on the corresponding electric tracks 4. After the electric tracks 4 are energized, the electric sliders 8 can move along the length of the electric tracks 4, so that the moving mechanism 5 and the pressing structure can be moved to the appropriate position to press down and fix the sandstone painting 26 to be processed. Auxiliary blocks 23 are fixed on the side of the two electric sliders 8 away from the grinding groove 12. The two auxiliary blocks 23 are slidably installed on the corresponding electric tracks 4.

[0044] Two auxiliary blocks 23 are each fixed with a first electric push rod 24 on one side of each other. The two first electric push rods 24 are each fixed with a push plate 25 on one side of each other. The two push plates 25 are respectively clamped on both sides of the sandstone painting 26 to be processed. When the position of the moving mechanism 5 is fixed, the push plates 25 clamp the sandstone painting 26 to be processed from both sides under the action of the first electric push rods 24.

[0045] Both electric sliders 8 are fixed with cylinders 9 at their top ends. Each cylinder 9 has a support block 10 at its top end, and a fixed seat 7 is fixed at the top end of the support block 10. By extending and retracting the cylinders 9, the height of the fixed seat 7 can be adjusted to accommodate sandstone paintings 26 of different thicknesses, greatly improving the versatility of the device.

[0046] like Figure 5 , 6 As shown, two long rails 27 are fixed on one side of the moving mechanism 5, and a moving block 29 is slidably installed between the two long rails 27. A pressing suction plate 33 is provided at the bottom of the moving block 29. The pressing suction plate 33 presses down and adsorbs onto the upper surface of the sandstone painting 26 to be processed. A second electric push rod 28 is fixed between the moving block 29 and the moving mechanism 5. A second motor 30 is fixed at the top of the moving block 29. The bottom drive shaft of the second motor 30 extends out of the moving block 29, and a turntable 31 is fixedly connected to the outside of the extended end.

[0047] A second spring telescopic rod 32 is fixed at the bottom of the turntable 31. The top of the pressure adsorption plate 33 is connected to the second spring telescopic rod 32. A pump body 34 is provided on one side of the top of the pressure adsorption plate 33. A cavity is opened inside the pressure adsorption plate 33. Multiple adsorption holes are opened at the bottom of the pressure adsorption plate 33. The adsorption holes are connected to the cavity. The pump body 34 is connected to the cavity through a pipe. When the pump body 34 is working, it can draw out the air in the cavity, so that the pressure adsorption plate 33 is tightly adsorbed onto the upper surface of the sandstone painting 26 to be processed through the adsorption holes, thus fixing the sandstone painting 26 to be processed.

[0048] In the actual operation of the present application, when the cylinder 9 is lowered, the lower pressing adsorption disc 33 first contacts the to-be-processed sandstone picture 26 due to the longest length of the second spring telescopic rod 32, the second spring telescopic rod 32 can provide buffering to avoid damage to the to-be-processed sandstone picture 26 due to excessive pressure, and the lower pressing adsorption disc 33 can press and fix the middle part of the to-be-processed sandstone picture 26.

[0049] When the polishing is completed, the second spring telescopic rod 32 will rise last due to its longer length, and the to-be-processed sandstone picture 26 will be slightly lifted due to the adsorption effect of the lower pressing adsorption disc 33, and will be separated from the workbench 1 and the supporting plate 36, so as to avoid friction between the to-be-processed sandstone picture 26 and the workbench 1 during rotation, and at the same time, the supporting plate 36 loses pressure and extends upward to support the bottom end of the to-be-processed sandstone picture 26. If the to-be-processed sandstone picture 26 falls, the supporting plate 36 can also support and buffer the to-be-processed sandstone picture 26. At this time, by starting the second motor 30, the to-be-processed sandstone picture 26 can be rotated, so that the other side of the to-be-processed sandstone picture 26 corresponds to the polishing groove 12 for polishing, thereby reducing the time for manual adjustment of personnel and improving the work efficiency.

[0050] As shown in Figure 6 , further, by extending and retracting the second electric push rod 28, the lower pressing adsorption disc 33 can be moved before the to-be-processed sandstone picture 26 is adsorbed, so as to adjust the position of the lower pressing adsorption disc 33 on the to-be-processed sandstone picture 26, and after the to-be-processed sandstone picture 26 is adsorbed, the to-be-processed sandstone picture 26 can be moved towards or away from the polishing groove 12, thereby facilitating polishing.

[0051] A lead screw 6 is rotatably connected between the two ends inside the fixed seat 7, and a screw block is threadedly connected to the outside of the lead screw 6. The screw block is slidably installed inside the fixed seat 7, the fixed plate 14 is fixed to one side of the screw block, one end of the fixed seat 7 is fixed with a driving motor, and the driving shaft of the driving motor is connected to one end of the lead screw 6. The driving motor can be a servo motor, so that the lead screw 6 can be driven to rotate forward and backward, and the corresponding screw block can be moved back and forth, thereby realizing the reciprocating polishing of the polishing wheel 20.

[0052] As shown in Figure 4 , the fixed plate 14 is slidably arranged on the moving mechanism 5, the first spring telescopic rod 16 is fixed to the bottom end of the fixed plate 14, the fixed frame 17 is fixed to the bottom end of the first spring telescopic rod 16, and the lower pressing roller 18 is rotatably connected in the fixed frame 17. It should be noted that a silica gel pad can be arranged on the outside of the lower pressing roller 18 to play a buffering role, or a pressure sensor can be arranged inside the lower pressing roller 18 to monitor the pressing force on the to-be-processed sandstone picture 26. The lower pressing roller 18 can be provided in plurality, and the plurality of lower pressing rollers 18 are arranged in a straight line. The position of the lower pressing roller 18 corresponds to that of the polishing wheel 20. The lower pressing roller 18 is pressed onto the top end of the to-be-processed sandstone picture 26 close to the edge of the polishing groove 12.

[0053] The fixed plate 14 is connected with the extension plate 15 at the bottom end away from the side of the sandstone picture 26 to be processed, the extension plate 15 is provided with the grinding wheel 20, the lower pressing roller 18 is arranged at the horizontal side of the grinding wheel 20, the grinding wheel 20 is attached to one end of the sandstone picture 26 to be processed, the first motor 19 is fixed on the extension plate 15, the grinding wheel 20 is fixed on the drive shaft at the bottom of the first motor 19, and the first motor 19 can drive the grinding wheel 20 to rotate after being started, so as to realize the grinding operation on the sandstone picture 26 to be processed.

[0054] The third electric push rod is fixed in the fixed plate 14 and connected with the extension plate 15, the third electric push rod can adjust the extension length of the extension plate 15, and the retraction and extension functions of the extension plate 15 can realize that the grinding wheel 20 is always attached to the side of the sandstone picture 26 to be processed, so as to avoid the phenomenon that the side of the sandstone picture 26 to be processed is worn after one round of grinding, and the grinding wheel 20 cannot be attached.

[0055] The pressure sensor is installed at the connecting part of the third electric push rod and the extension plate 15, the output pushing force of the push rod can be directly monitored, the attachment degree of the grinding wheel 20 and the sandstone picture 26 to be processed can be reflected in real time, so as to avoid the gap and ensure the grinding precision. The pressure sensor can be connected with the integrated control switch.

[0056] If the edge of the sandstone picture 26 to be processed in the monitoring area is protruded too much, the sensed pressure data is larger, and the integrated control switch can be used to grind this area for a longer time.

[0057] The suction port 13 is arranged on the inner wall of the grinding groove 12, the dust collector 2 is fixed in the workbench 1, the connecting pipe 3 is connected between the dust collector 2 and the suction port 13, the coaming 11 is arranged at the top end of the grinding groove 12 away from the side of the sandstone picture 26 to be processed, and the bottom end of the coaming 11 is fixed on the workbench 1. The dust collector 2 can timely suck away the dust generated by grinding through the suction port 13, the coaming 11 can block the dust from splashing, effectively avoids the harm of the dust to the health of the operator, reduces the pollution of the dust to other parts of the device, and prolongs the service life of the device.

[0058] After the extension end of the air cylinder 9 is retracted downward, the grinding wheel 20 and the lower pressing roller 18 can be lowered, the lower pressing roller 18 first contacts the upper surface of the sandstone picture 26 to be processed and fixes the sandstone picture 26 to be processed, at this time, the grinding wheel 20 continues to descend and corresponds to the side of the sandstone picture 26 to be processed, the third electric push rod is started to retract the extension plate 15, and the grinding wheel 20 is attached to the side of the sandstone picture 26 to be processed.

[0059] As Figure 1As shown, after the drive motor starts, it can drive the lead screw 6 to rotate, thereby causing the lead block to slide along the inside of the fixed seat 7, realizing the lateral movement of the fixed plate 14. In conjunction with the movement of the electric slider 8 along the electric track 4, the grinding wheel 20 can move smoothly along the edge of the sandstone painting 26 to be processed, ensuring the uniformity of grinding.

[0060] During grinding, the pressure roller 18 always moves at a constant speed following the grinding wheel 20, ensuring that the pressing area of ​​the pressure roller 18 always corresponds to the grinding area of ​​the grinding wheel 20. The downward pressure of the pressure roller 18 is concentrated on the top edge of the sandstone painting 26 to be processed, reducing the gap between the bottom edge of the sandstone painting 26 and the worktable 1, and reducing the occurrence of edge chipping. At the same time, the pressure roller can adapt to sandstone paintings of different lengths and widths, and can adapt to sandstone paintings of different lengths without changing the adapter parts. Compared with the traditional overall covering pressing, it not only significantly expands the scope of application, but also concentrates the pressing force on the grinding area to prevent edge chipping and reduce the occurrence of edge chipping.

[0061] The elastic pressure of the first spring telescopic rod 16 ensures that the bottom edge of the sandstone painting 26 to be processed fits tightly against the worktable 1, reducing gaps at the grinding edge and preventing displacement of the sandstone painting 26 caused by the transmission of grinding vibration to the gaps. At the same time, the lower pressure roller 18 can adaptively fine-tune with the grinding process to ensure that the pressing force is concentrated on the top edge, which not only prevents the sandstone painting 26 to be processed from chipping but also does not affect the normal operation of the grinding wheel 20.

[0062] Meanwhile, during the movement of the sandstone painting 26 to be processed, the pressure roller 18 can rotate with it, reducing frictional damage to the surface of the sandstone painting 26 to be processed.

[0063] like Figure 8 As shown, a fixing block 21 is fixed to one side of the bottom of the protruding plate 15. A groove 37 is opened at the bottom of the fixing block 21 near the sandstone painting 26 to be processed. A talc 22 is placed in the groove 37. A telescopic spring 38 is fixed to one end of the groove 37. A pressing plate 39 is fixed to one end of the telescopic spring 38. The pressing plate 39 and one end of the talc 22 are movably connected. The other end of the talc 22 contacts the sandstone painting 26 to be processed. The fixing block 21 moves with the protruding plate 15. By using the friction between the talc 22 and the sandstone painting 26 to be processed, the tiny impurities on the surface of the sandstone painting 26 to be processed are removed before grinding, reducing the jamming phenomenon during the grinding process. At the same time, the lubricating effect of the talc powder can reduce the wear of the grinding wheel 20 and extend its replacement cycle.

[0064] When the mobile mechanism 5 is fixed, the push plate 25 clamps the to-be-processed sandstone picture 26 from both sides under the action of the first electric push rod 24, the lower pressing suction disc 33 fixes the to-be-processed sandstone picture 26 from above, and the multi-directional fixing mode can effectively prevent the to-be-processed sandstone picture 26 from moving or shaking during polishing, ensures the accuracy of the polishing position, and avoids polishing deviation caused by unstable fixing.

[0065] It should be noted that an integrated control switch is arranged, the control switch is installed on the side of the workbench 1 at a position convenient for operation, and the control switch is connected to the control ends of the electric track 4, the first electric push rod 24, the air cylinder 9, the second electric push rod 28, the second motor 30, the pump body 34, the driving motor, the first motor 19, the third electric push rod, the dust collector 2 and other mechanisms through an internal circuit.

[0066] The control switch is provided with a plurality of function keys and a display screen, the function keys include a power supply master switch, an automatic operation key, and individual control keys of each mechanism, such as a moving key of the electric sliding block 8, a clamping mechanism start-stop key, a polishing mechanism start-stop key and the like. An operator can realize centralized control of each mechanism by pressing the keys: pressing the automatic operation key, the device can automatically complete a series of operations such as fixing, polishing and rotating of the to-be-processed sandstone picture 26 according to a preset working procedure; pressing the individual control keys of each mechanism can control the corresponding mechanism to move or start, which is convenient for precise operation in debugging, maintenance or special working conditions. The display screen can display the running state of each mechanism in real time, parameters such as the pressing degree and the polishing speed, which is convenient for the operator to monitor the running state of the device. At the same time, a safety interlocking module is arranged in the control switch, when an abnormal running state of a mechanism occurs, such as that the pressure sensor detects that the pressure is too large, the motor is overloaded and the like, a signal will be automatically sent to stop the related mechanism from running, and the fault information will be displayed on the display screen, which avoids equipment damage or safety accidents caused by improper coordination of mechanisms. Since it is prior art, no further description is given.

[0067] Working principle: The to-be-processed sandstone picture 26 is placed above the supporting plate 36, and one end of the to-be-processed sandstone picture 26 is aligned and placed towards the polishing groove 12. The mobile mechanism 5 is moved above the to-be-processed sandstone picture 26 by the electric sliding block 8, at this time the air cylinder 9 is retracted downward, and then the push plate 25 is driven by the first electric push rod 24 to clamp and stabilize the to-be-processed sandstone picture 26 from both sides. Since the second spring telescopic rod 32 has the longest length, the lower pressing suction disc 33 will first contact the upper surface of the to-be-processed sandstone picture 26, fix the top end of the to-be-processed sandstone picture 26, and retract the supporting plate 36 downward to reduce the height between the to-be-processed sandstone picture 26 and the workbench 1.

[0068] With the continuous descent of the cylinder 9, the lower pressing roller 18 will contact the top edge of the sandstone picture 26 to be processed, and the top edge of the sandstone picture 26 to be processed will be pressed and fixed, and the fixing strength will be enhanced. With the continuous descent of the cylinder 9, the grinding wheel 20 corresponds to the side of the sandstone picture 26 to be processed. By controlling the third electric push rod, the grinding wheel 20 can be tightly attached to the side of the sandstone picture 26 to be processed. Finally, the driving motor and the first motor 19 are started to make the lead screw 6 and the grinding wheel 20 rotate, and the reciprocating grinding work is completed.

[0069] When the cylinder 9 extends upward, the first electric push rod 24 is retracted, the clamping and fixing on both sides are released, and the grinding wheel 20, the lower pressing roller 18 and the lower pressing adsorption disc 33 are sequentially lifted. When the lower pressing adsorption disc 33 is lifted, the adsorbed sandstone picture 26 to be processed is lifted, and the rotation is completed by the driving of the second motor 30, so that the sandstone picture 26 to be processed on the other side is replaced and ground.

Claims

1. A sandstone painting edge smoothing device, comprising a workbench (1) for placing a sandstone painting (26) to be processed, characterized in that: The workbench (1) is equipped with a grinding wheel (20) for grinding the edges of the sandstone painting (26) to be processed. The grinding wheel (20) moves along the edge of the sandstone painting (26) to be processed to grind the edge of the sandstone painting (26); The workbench (1) is also provided with a pressing roller (18), which is used to press against the edge of the upper surface of the sandstone painting (26) to be processed. The pressing roller (18) moves synchronously with the grinding wheel (20), and the pressing roller (18) is located on one side of the grinding wheel (20) in the horizontal direction. The top of the workbench (1) is provided with an electric track (4), a moving mechanism (5) is slidably installed on the electric track (4), a fixed plate (14) is slidably installed on the moving mechanism (5), and a third electric push rod is provided at the bottom of the fixed plate (14) on the side away from the sandstone painting (26) to be processed, and one end of the third electric push rod is connected to an extension plate (15). A fixing block (21) is fixed to one side of the bottom end of the protruding plate (15). A groove (37) is opened at the bottom end of the fixing block (21) near the sandstone painting (26) to be processed. A talc (22) is placed in the groove (37). A telescopic spring (38) is fixed to one end of the groove (37). A pressing plate (39) is fixed to one end of the telescopic spring (38). The pressing plate (39) and the talc (22) are movably connected at one end. The other end of the talc (22) is in contact with the sandstone painting (26) to be processed. The workbench (1) is provided with a grinding groove (12), which corresponds to one end of the sandstone painting (26) to be processed, and the pressure roller (18) presses against the edge of the top of the sandstone painting (26) to be processed near the grinding groove (12); The bottom end of the fixed plate (14) is fixed with a first spring telescopic rod (16), and the bottom end of the first spring telescopic rod (16) is fixed with a fixed frame (17). The lower pressure roller (18) is rotatably connected to the fixed frame (17). The first motor (19) is fixed on the protruding plate (15), and the grinding wheel (20) is fixed on the drive shaft at the bottom of the first motor (19); The top of the workbench (1) is provided with a telescopic groove (35), and a third spring telescopic rod is fixed at the bottom of the telescopic groove (35). A support plate (36) is fixed at the top of the third spring telescopic rod, and a buffer pad is fixed at the top of the support plate (36). The support plate (36) is located below the sandstone painting (26) to be processed.

2. The sandstone painting edge smoothing device according to claim 1, characterized in that: Two long rails (27) are fixed on one side of the moving mechanism (5), and a moving block (29) is slidably installed between the two long rails (27). A pressure adsorption plate (33) is provided at the bottom of the moving block (29). The pressure adsorption plate (33) presses down and adsorbs onto the upper surface of the sandstone painting (26) to be processed. A second electric push rod (28) is fixed between the moving block (29) and the moving mechanism (5).

3. The sandstone painting edge smoothing device according to claim 2, characterized in that: The top of the movable block (29) is fixed with a second motor (30), the bottom drive shaft of the second motor (30) extends out of the movable block (29), and a turntable (31) is fixedly connected to the outside of the extended end. The bottom of the turntable (31) is fixed with a second spring telescopic rod (32). The top of the pressure adsorption plate (33) is fixedly connected to the second spring telescopic rod (32). A pump body (34) is provided on one side of the top of the pressure adsorption plate (33). A cavity is opened inside the pressure adsorption plate (33). Multiple adsorption holes are opened at the bottom of the pressure adsorption plate (33). The adsorption holes and the cavity are connected. The pump body (34) is connected to the cavity through a pipe.

4. The sandstone painting edge smoothing device according to claim 1, characterized in that: Two electric tracks (4) are provided. The moving mechanism (5) includes two electric sliders (8). The two electric sliders (8) are slidably installed on the corresponding electric tracks (4). A cylinder (9) is fixed at the top of each of the two electric sliders (8). A support block (10) is inherently located at the top of the cylinder (9). A fixed seat (7) is fixed at the top of the support block (10). A lead screw (6) is rotatably connected between the two ends inside the fixed seat (7). A screw block is threaded on the outside of the lead screw (6). The screw block is slidably installed inside the fixed seat (7). The fixed plate (14) is fixed to one side of the screw block. A drive motor is fixed at one end of the fixed seat (7). The drive shaft of the drive motor is fixedly connected to one end of the lead screw (6).

5. The sandstone painting edge smoothing device according to claim 4, characterized in that: Two electric sliders (8) are fixed with auxiliary blocks (23) on the side away from the grinding groove (12). The two auxiliary blocks (23) are slidably installed on the corresponding electric tracks (4). The two auxiliary blocks (23) are fixed with first electric push rods (24) on opposite sides. The two first electric push rods (24) are fixed with push plates (25) at opposite ends. The two push plates (25) are clamped on both sides of the sandstone painting (26) to be processed.

6. The sandstone painting edge smoothing device according to claim 1, characterized in that: An adsorption port (13) is provided on the inner wall of the grinding groove (12), a vacuum cleaner (2) is fixed inside the workbench (1), and a connecting pipe (3) is connected between the vacuum cleaner (2) and the adsorption port (13). A surrounding plate (11) is provided on the side of the top of the grinding groove (12) away from the sandstone painting (26) to be processed, and the bottom end of the surrounding plate (11) is fixed on the workbench (1).

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