A polishing device capable of quickly fixing a picture frame

Abstract

This utility model relates to the field of picture frame processing technology, and discloses a polishing device for quickly fixing picture frames. It includes a processing table and a grinding table. A connecting plate is fixedly connected to the top of the processing table, and a polishing mechanism is installed on the top of the connecting plate. A clamping mechanism is installed on the top of the grinding table. The clamping mechanism includes a fixed plate, a first motor, a rotating shaft, a load-bearing frame, a second motor, a two-way lead screw, a lead screw nut, a first clamping plate, a second clamping plate, a hydraulic cylinder, a lifting plate, and a suction cup. This polishing device for quickly fixing picture frames utilizes a double-fixing design in the clamping mechanism. Horizontally, the two-way lead screw drives the clamping plate to clamp the picture frame, while vertically, the electric suction cup adsorbs and fixes it, preventing the picture frame from shifting or shaking during polishing. Combined with the motor-driven rotating shaft structure, the polishing angle of the picture frame can be flexibly adjusted without repeated manual disassembly and adjustment. The structural design of the clamping plate and suction cup can adapt to picture frames of different sizes and thicknesses, eliminating the need for frequent clamp changes and adapting to the polishing needs of different parts of the picture frame.

Description

Technical Field

[0001] This utility model belongs to the field of picture frame processing technology, specifically, it relates to a polishing device that can quickly fix a picture frame. Background Technology

[0002] Polishing is a crucial step in the picture frame manufacturing process, ensuring the quality of the frame's appearance. However, existing polishing devices generally suffer from the problem of simultaneously fixing the frame and adjusting its angle. Traditional devices often use a single clamping plate for fixation, allowing polishing only a single plane or a fixed angle of the frame. If polishing different parts such as corners or bevels is required, the frame must be disassembled, repositioned, and re-fixed manually multiple times. This process is not only cumbersome and inefficient, but also prone to inconsistent polishing precision due to positioning errors during manual adjustments. This results in uneven grinding of corners and poor surface flatness, failing to meet the high-efficiency and high-precision processing requirements of mass-produced picture frames. Utility Model Content

[0003] The purpose of this invention is to provide a polishing device that can quickly fix a picture frame, so as to solve the problems mentioned in the background art.

[0004] A polishing device for quickly fixing a picture frame includes a processing table and a grinding table fixedly connected to the right side of the processing table. A connecting plate is fixedly connected to the top of the processing table, a polishing mechanism is provided on the top of the connecting plate, and a clamping mechanism is provided on the top of the grinding table.

[0005] The clamping mechanism includes a fixed plate, a first motor, a rotating shaft, a load-bearing frame, a second motor, a double-acting lead screw, a lead screw nut, a first clamping plate, a second clamping plate, a hydraulic cylinder, a lifting plate, and a suction cup. The fixed plate is fixedly installed on the top of the grinding table. The first motor is fixedly installed on the front of the fixed plate. The rotating shaft is connected to the output end of the first motor. The load-bearing frame is fixedly connected to the outer surface of the rotating shaft. The second motor is fixedly installed on the right side of the load-bearing frame. The double-acting lead screw is connected to the output end of the second motor through a second transmission mechanism. The lead screw nut is connected to the outer surface of the double-acting lead screw. The first clamping plate is fixedly connected to the top of the lead screw nut. The second clamping plate is fixedly connected to the side of the first clamping plate. The hydraulic cylinder is fixedly installed on the front and back of the load-bearing frame. The lifting plate is connected to the output end of the hydraulic cylinder. The suction cup is fixedly connected to the top of the lifting plate.

[0006] In a preferred embodiment of this utility model, the rotating shaft is connected to the fixed plate through a bearing seat, and the outer surface of the rotating shaft is connected to the bottom of the load-bearing frame through two sets of bearing seats. The threads at both ends of the bidirectional lead screw are in opposite directions.

[0007] In a preferred embodiment of this utility model, the suction cup is an electric suction cup, and the transmission mechanism two is a belt transmission mechanism, including a large pulley, a small pulley and a transmission belt, wherein the center of the large pulley is fixedly connected to one end of the bidirectional lead screw, and the center of the small pulley is connected to the output end of the motor one.

[0008] In a preferred embodiment of this utility model, a collection box is fixedly connected to the bottom of the grinding table, and a dust extraction fan is installed on the back of the collection box.

[0009] In a preferred embodiment of the present invention, a groove is provided on the upper surface of the grinding table, a dustproof frame is slidably connected inside the groove, a magnetic block is fixedly connected to the left side of the dustproof frame, a limit frame is fixedly connected to the top of the grinding table, and a slot adapted to the magnetic block is provided on the right side of the limit frame.

[0010] In a preferred embodiment of this utility model, the polishing mechanism includes a slide rail, a slider, a mounting plate, a motor, a transmission mechanism, a grinding shaft, a grinding head, and a cylinder. The slide rail is fixedly connected to the top of the connecting plate, the slider is slidably connected to the surface of the slide rail, the mounting plate is fixedly mounted on the top of the slider, the motor is fixedly mounted on the top left side of the mounting plate, the grinding shaft is connected to the output end of the motor through the transmission mechanism, the grinding head is fixedly connected to the right end of the grinding shaft, and the cylinder is fixedly mounted on the left side of the mounting plate.

[0011] In a preferred embodiment of this utility model, the bottom of the cylinder is fixedly connected to the top of the processing table, and the transmission mechanism includes a large pulley, a small pulley and a transmission belt. The center of the large pulley is fixedly connected to the outer surface of the grinding shaft, the center of the small pulley is connected to the output end of the motor, and the outer surface of the grinding shaft is fixedly connected to the mounting plate through two sets of bearing seats.

[0012] Compared with the prior art, the present invention has the following advantages: 1. This polishing device for quickly fixing picture frames utilizes a dual-fixing design in its clamping mechanism. Horizontally, a bidirectional lead screw drives the clamping plate to clamp the picture frame, while vertically, an electric suction cup adsorbs and fixes it, effectively preventing the picture frame from shifting or shaking during polishing. Simultaneously, the motor-driven rotating shaft structure allows for flexible adjustment of the picture frame's polishing angle, eliminating the need for repeated manual disassembly and adjustment. The clamping plate and suction cup design can accommodate picture frames of different sizes and thicknesses, eliminating the need for frequent clamp changes and adapting to the polishing needs of different parts of the picture frame.

[0013] 2. This polishing device, which can quickly fix the picture frame, can collect the waste and dust generated during polishing in a timely manner through the collection box at the bottom of the polishing table and the dust extraction fan; the dustproof frame is sealed with the limiting frame by magnetic blocks, which effectively prevents the spread of dust and improves the working environment for operators.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention. Figure 3 This is a schematic diagram of the collection box structure of this utility model; Figure 4 This is a schematic diagram of the clamping mechanism of this utility model; Figure 5 This is a schematic diagram of the clamping plate structure of this utility model; Figure 6 This is a schematic diagram of the polishing mechanism of this utility model.

[0016] In the diagram: 1. Processing table; 2. Slide rail; 201. Connecting plate; 202. Slider; 203. Mounting plate; 204. Motor; 205. Transmission mechanism one; 206. Grinding shaft; 207. Grinding head; 208. Cylinder; 3. Fixing plate; 301. Grinding table; 302. Collection box; 303. Dust extraction fan; 304. Motor one; 305. Rotating shaft; 306. Load-bearing frame; 307. Motor two; 308. Two-way lead screw; 309. Lead screw nut; 310. Clamping plate one; 311. Clamping plate two; 312. Hydraulic cylinder; 313. Lifting plate; 314. Suction cup; 4. Dustproof frame; 401. Magnetic block; 402. Limiting frame; 403. Slot. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0018] Example 1: like Figures 1 to 6 As shown, a polishing device for quickly fixing a picture frame includes a processing table 1 and a grinding table 301 fixedly connected to the right side of the processing table 1. A connecting plate 201 is fixedly connected to the top of the processing table 1, and a polishing mechanism is provided on the top of the connecting plate 201. A clamping mechanism is provided on the top of the grinding table 301.

[0019] The polishing mechanism includes a slide rail 2, a slider 202, a mounting plate 203, a motor 204, a transmission mechanism 205, a grinding shaft 206, a grinding head 207, and a cylinder 208. The slide rail 2 is fixedly connected to the top of the connecting plate 201, the slider 202 is slidably connected to the surface of the slide rail 2, the mounting plate 203 is fixedly mounted on the top of the slider 202, the motor 204 is fixedly mounted on the top left side of the mounting plate 203, and the grinding shaft 206 is connected to the output of the motor 204 through the transmission mechanism 205. At the end, the grinding head 207 is fixedly connected to the right end of the grinding shaft 206, the cylinder 208 is fixedly installed on the left side of the mounting plate 203, the bottom of the cylinder 208 is fixedly connected to the top of the processing table 1, the transmission mechanism 205 is a belt transmission mechanism, including a large pulley, a small pulley and a transmission belt, wherein the center of the large pulley is fixedly connected to the outer surface of the grinding shaft 206, the center of the small pulley is connected to the output end of the motor 204, and the outer surface of the grinding shaft 206 is fixedly connected to the mounting plate 203 through two sets of bearing seats.

[0020] The clamping mechanism includes a fixed plate 3, a first motor 304, a rotating shaft 305, a load-bearing frame 306, a second motor 307, a double-acting lead screw 308, a lead screw nut 309, a first clamping plate 310, a second clamping plate 311, a hydraulic cylinder 312, a lifting plate 313, and a suction cup 314. The fixed plate 3 is fixedly installed on the top of the grinding table 301. The first motor 304 is fixedly installed on the front of the fixed plate 3. The rotating shaft 305 is connected to the output end of the first motor 304. The load-bearing frame 306 is fixedly connected to the outer surface of the rotating shaft 305. The second motor 307... Fixedly installed on the right side of the load-bearing frame 306, the bidirectional lead screw 308 is connected to the output end of the second motor 307 through the second transmission mechanism, the lead screw nut 309 is connected to the outer surface of the bidirectional lead screw 308, the first clamping plate 310 is fixedly connected to the top of the lead screw nut 309, the second clamping plate 311 is fixedly connected to the side of the first clamping plate 310, the hydraulic cylinder 312 is fixedly installed on the front and back of the load-bearing frame 306, the lifting plate 313 is connected to the output end of the hydraulic cylinder 312, and the suction cup 314 is fixedly connected to the top of the lifting plate 313.

[0021] The rotating shaft 305 is connected to the fixed plate 3 through the bearing seat. The outer surface of the rotating shaft 305 is connected to the bottom of the load-bearing frame 306 through two sets of bearing seats. The threads at both ends of the bidirectional lead screw 308 are in opposite directions. The suction cup 314 is an electric suction cup. The second transmission mechanism is a belt transmission mechanism, including a large pulley, a small pulley and a transmission belt. The center of the large pulley is fixedly connected to one end of the bidirectional lead screw 308, and the center of the small pulley is connected to the output end of the motor 304.

[0022] Example 2: Based on Embodiment 1, a collection box 302 is fixedly connected to the bottom of the polishing table 301, a dust suction fan 303 is installed on the back of the collection box 302, a sliding groove is provided on the upper surface of the polishing table 301, a dustproof frame 4 is slidably connected inside the sliding groove, a magnetic block 401 is fixedly connected to the left side of the dustproof frame 4, a limiting frame 402 is fixedly connected to the top of the polishing table 301, and a slot 403 adapted to the magnetic block 401 is provided on the right side of the limiting frame 402.

[0023] Simultaneously with the start of the polishing operation, the vacuum fan 303 installed on the back of the collection box 302 is activated. When the vacuum fan 303 is working, it creates a negative pressure environment inside the collection box 302. Wood chips, dust, and other waste generated during polishing on the upper surface of the polishing table 301 are drawn into the collection box 302 under the influence of atmospheric pressure, achieving centralized collection of waste. Simultaneously, the dustproof frame 4, slidably connected within the groove on the upper surface of the polishing table 301, has its left-side fixed magnetic block 401 engage with the right-side slot 403 of the limiting frame 402 fixed at the top of the polishing table 301. This creates a closed space between the dustproof frame 4 and the polishing table 301, effectively preventing waste from splashing during polishing and reducing dust diffusion into the surrounding environment. This ensures a clean working environment and reduces the impact of waste on the health of operators.

[0024] Motor 204 is a three-phase asynchronous motor with a rated power of 0.75-1.5kW and a speed of 1400-2800r / min. It is compatible with 380V industrial power supply to ensure that the polishing head 207 can achieve a polishing speed of 500-1000r / min.

[0025] The 304 motor is a stepper motor with a step angle of 1.8° and a rated torque of 0.5-1 N·m. It supports low-speed rotation of 0-30 r / min and, together with the controller, achieves frame angle adjustment accuracy of ±0.5° to meet different edge polishing requirements.

[0026] Motor 2 307 uses a DC geared motor with a rated voltage of 24V, an output torque of 2-5N・m, and a speed of 50-100r / min. This ensures that the bidirectional lead screw 308 drives the clamping plate to move at a speed of 5-10mm / s, thus avoiding damage to the photo frame during clamping.

[0027] The transmission belt in transmission mechanism one / two is made of neoprene synchronous belt with 20-40 teeth and a width of 15-20mm. The diameter ratio of the large pulley to the small pulley is 2:1-4:1. It is also specified that the connection between the pulley and the shaft is a keyway fit to prevent slippage.

[0028] The 308 double-acting lead screw has a lead screw diameter of 12-16mm, a pitch of 2-4mm, and is made of 45# steel with heat treatment to ensure a load-bearing capacity of ≥5kg. The matching lead screw nut 309 is a copper sliding nut to reduce wear.

[0029] Clamping plate 1 (310): 100-200mm in length, 20-30mm in width; Clamping plate 2 (311): 30-50mm in height, suitable for frame thicknesses of 5-30mm; Electric suction cup (314): 50-80mm in diameter, 80-120N suction power, single unit load capacity ≥2kg; Each load-bearing frame (306) is equipped with 2-4 suction cups, suitable for frame sizes of 200mm×300mm-500mm×700mm.

[0030] Hydraulic cylinder 312 is a single-acting hydraulic cylinder with a cylinder diameter of 20-30mm, a stroke of 50-80mm, a working pressure of 0.8-1.2MPa, and a pushing speed of 10-15mm / s, ensuring that the suction cup 314 makes stable contact with the bottom of the photo frame.

[0031] The grinding head 207 is made of aluminum oxide grinding wheel or wool wheel, with a diameter of 50-80mm and a thickness of 10-15mm, to suit different polishing needs. The grinding head and the grinding shaft 206 are connected by threads for easy replacement.

[0032] The cylinder 208 has a cylinder diameter of 32-40mm, a stroke of 100-200mm, a working pressure of 0.6-0.8MPa, and a moving speed of 20-30mm / s; the slide rail 2 is a linear guide rail, model HGR15-HGR20, and the slider 202 has a rated dynamic load ≥5kN to ensure that the mounting plate 203 moves smoothly without jamming.

[0033] All electrical components are equipped with overload protection devices that automatically cut off power when the current exceeds 1.2 times the rated value to prevent burnout; grounding terminals are also provided with a grounding resistance of ≤4Ω to prevent leakage and electric shock; the control circuit uses a PLC controller, model S7-200SMART, with an emergency stop button that immediately cuts off all power supply when pressed, with a response time of ≤0.1s.

[0034] The dustproof frame 4 is made of transparent acrylic sheet, 3-5mm thick, and 150-200mm high. The magnetic block 401 is a neodymium iron boron magnet with a magnetic force ≥50N, ensuring that the dust leakage rate is ≤5mg / m³ after sealing. 3 Meanwhile, an observation window is opened on the right side of the dustproof frame 4 to facilitate observation of the polishing progress.

[0035] Collection box 302 has a volume of 50-100L and is equipped with an internal filter that can filter more than 95% of dust; the dust extraction fan 303 is a centrifugal fan with an air volume of 100-150m³ / h. 3 / h, wind pressure ≥200Pa, ensuring waste collection efficiency ≥90%.

[0036] Preparations before polishing the picture frame: Connect the power supplies to motor 204, motor one 304, motor two 307, hydraulic cylinder 312, and vacuum blower 303, and test whether each component can start normally. Slide the dustproof frame 4 on the grinding table 301 so that the left magnetic block 401 is engaged in the slot 403 of the limiting frame 402, thus completing the dustproof seal.

[0037] Place the photo frame to be polished on top of the load-bearing frame 306, start the motor 307, and drive the bidirectional lead screw 308 to rotate through the transmission mechanism 2. The threads at both ends of the bidirectional lead screw 308 are reversed, which drives the two sets of lead screw nuts 309 to move relative to each other, so that the clamping plate 310 and the clamping plate 311 clamp from both sides of the photo frame to achieve horizontal fixation.

[0038] Start the hydraulic cylinder 312 to push the lifting plate 313 up, so that the top electric suction cup 314 fits against the bottom of the picture frame. The suction cup is powered on to generate suction force and completes the vertical fixation. According to the polishing requirements of the picture frame, start the motor 304 to drive the rotating shaft 305 to rotate. The rotating shaft 305 drives the load-bearing frame 306 to rotate through the bearing seat.

[0039] Once the load-bearing frame 306 rotates the photo frame to the target angle, such as a 45° hypotenuse or a 90° right angle, the motor 304 is turned off to complete the angle positioning. The motor 204 is then started, which drives the grinding shaft 206 to rotate through the transmission mechanism. The grinding shaft 206 drives the right-end grinding head 207 to rotate at high speed. The cylinder 208 is then started, pushing the mounting plate 203 to move horizontally along the slider 202 on the surface of the slide rail 2, so that the grinding head 207 is close to the part of the photo frame to be polished. The movement speed is controlled to complete the uniform polishing.

[0040] During the polishing process, start the vacuum fan 303 on the back of the collection box 302 at the bottom of the polishing table 301. The polishing waste is sucked into the collection box 302 through the gap of the polishing table 301. After polishing is completed, turn off the motor 204, cylinder 208 and vacuum fan 303 in sequence, disconnect the suction cup power, start the motor 307 in reverse to release the clamp, remove the picture frame, and finally clean the waste in the collection box 302.

[0041] Working principle: Place the frame to be polished stably on the load-bearing frame 306 of the clamping mechanism at the top of the polishing table 301. Adjust the initial position according to the size of the frame to ensure that the edge of the frame to be polished is roughly aligned with the movement trajectory of the polishing head 207 of the subsequent polishing mechanism, so as to prepare for subsequent fixing and polishing.

[0042] The motor 307, installed on the right side of the load-bearing frame 306, is started. The output of the motor 307 transmits power to the double-acting lead screw 308 through the transmission mechanism 2. Since the threads at both ends of the double-acting lead screw 308 are opposite, its rotation will drive the two sets of lead screw nuts 309 connected to the outer surface to move relative to each other along the lead screw axis. The clamping plate 310 fixed at the top of the lead screw nut 309 moves synchronously with the lead screw nut 309. At the same time, the clamping plate 311 fixed on the side of the clamping plate 310 also moves closer to the picture frame until the two sets of clamping plates 310 and 311 are tightly attached to both sides of the picture frame, completing the horizontal clamping and fixing of the picture frame and preventing the picture frame from shifting on the horizontal plane.

[0043] The hydraulic cylinders 312, installed on the front and back of the load-bearing frame 306, are activated. The output end of the hydraulic cylinders 312 pushes the lifting plate 313 to rise vertically. The suction cup 314 fixed on the top of the lifting plate 313 rises synchronously with the lifting plate 313 until the upper surface of the suction cup 314 is tightly attached to the bottom of the picture frame. At this time, the suction cup 314 is energized, and a negative pressure is generated inside the suction cup 314. The atmospheric pressure firmly adheres the picture frame to the suction cup 314, completing the vertical adsorption and fixation of the picture frame, further preventing the picture frame from shaking up and down during the polishing process.

[0044] Depending on the polishing requirements of different parts of the picture frame, such as the corners and sides, the motor 304, mounted on the front of the fixed plate 3, is activated. The output of motor 304 drives the rotating shaft 305 to rotate around its own axis. The rotating shaft 305 is connected to the fixed plate 3 via bearing seats, and its outer surface is connected to the bottom of the load-bearing frame 306 via two sets of bearing seats, ensuring the stability of the rotating shaft 305 during rotation. Since the load-bearing frame 306 is fixedly connected to the outer surface of the rotating shaft 305, the rotation of the rotating shaft 305 causes the load-bearing frame 306 to rotate synchronously, thereby causing the picture frame fixed on the load-bearing frame 306 to rotate. When the picture frame rotates to the preset polishing angle, motor 304 is turned off, the rotating shaft 305 stops rotating, and the picture frame remains at the target polishing angle, awaiting polishing.

[0045] The motor 204, mounted on the top left side of the mounting plate 203, is activated. The output of the motor 204 transmits power to the grinding shaft 206 via a transmission mechanism. The outer surface of the grinding shaft 206 is fixedly connected to the mounting plate 203 via two sets of bearing seats, ensuring the coaxiality and stability of the grinding shaft 206 during rotation. The power from the motor 204, after being reduced in speed and increased in torque by the transmission mechanism, drives the grinding shaft 206 to rotate at high speed around its own axis. This, in turn, drives the grinding head 207, fixed to the right end of the grinding shaft 206, to rotate synchronously at high speed, providing the grinding head 207 with the cutting force and speed required for polishing.

[0046] The cylinder 208, installed on the left side of the mounting plate 203, is activated. The output end of the cylinder 208 pushes the mounting plate 203 to slide along the surface of the slide rail 2. As the mounting plate 203 slides, it drives the motor 204, the grinding shaft 206, and the high-speed rotating grinding head 207 to move synchronously along the slide rail 2, causing the grinding head 207 to gradually approach the part of the frame to be polished. After the grinding head 207 contacts the surface of the frame to be polished, the pushing speed of the cylinder 208 is controlled, and the air intake of the cylinder 208 is adjusted, so that the grinding head 207 moves along the surface of the frame to be polished at a preset feed speed, performing a uniform and precise polishing operation on the frame. During the polishing process, the belt drive characteristic of the transmission mechanism can buffer the impact force when the grinding head 207 contacts the frame, avoiding damage to the frame or accelerated wear of the grinding head 207 due to excessive instantaneous impact force, while ensuring the stability of the grinding head 207's rotation speed and ensuring polishing quality.

[0047] After all polishing areas of the picture frame have been completed, the motor 204, cylinder 208, and vacuum fan 303 are turned off sequentially. Motor 204 stops working, and the grinding shaft 206 and grinding head 207 stop rotating. Cylinder 208 reverses airflow, causing the mounting plate 203 and grinding head 207 to move in the opposite direction along slide rail 2, away from the picture frame. The vacuum fan 303 stops working, and waste collection ceases. Then, the power to suction cup 314 is disconnected, the negative pressure inside suction cup 314 disappears, and the vertical suction fixation on the picture frame is released. Motor 307 is then reversed, causing the bidirectional lead screw 308 to rotate in the opposite direction. This causes the two sets of lead screw nuts 309 to move clamping plates 310 and 311 in the opposite direction, releasing the horizontal clamping fixation on the picture frame. Finally, the operator can easily remove the polished picture frame from the load-bearing frame 306, completing the entire picture frame polishing process.

Claims

1. A polishing device for quickly fixing a picture frame, comprising a processing table (1) and a polishing table (301) fixedly connected to the right side of the processing table (1), characterized in that: A connecting plate (201) is fixedly connected to the top of the processing table (1), a polishing mechanism is provided on the top of the connecting plate (201), and a clamping mechanism is provided on the top of the grinding table (301). The clamping mechanism includes a fixed plate (3), a first motor (304), a rotating shaft (305), a load-bearing frame (306), a second motor (307), a two-way lead screw (308), a lead screw nut (309), a first clamping plate (310), a second clamping plate (311), a hydraulic cylinder (312), a lifting plate (313), and a suction cup (314). The fixed plate (3) is fixedly installed on the top of the grinding table (301). The first motor (304) is fixedly installed on the front of the fixed plate (3). The rotating shaft (305) is connected to the output end of the first motor (304). The load-bearing frame (306) is fixedly connected to the outer surface of the rotating shaft (305). The second motor... (307) is fixedly installed on the right side of the load-bearing frame (306). The bidirectional lead screw (308) is connected to the output end of the motor (307) through the transmission mechanism two. The lead screw nut (309) is connected to the outer surface of the bidirectional lead screw (308). The first clamping plate (310) is fixedly connected to the top of the lead screw nut (309). The second clamping plate (311) is fixedly connected to the side of the first clamping plate (310). The hydraulic cylinder (312) is fixedly installed on the front and back of the load-bearing frame (306). The lifting plate (313) is connected to the output end of the hydraulic cylinder (312). The suction cup (314) is fixedly connected to the top of the lifting plate (313).

2. The polishing device for quickly fixing a photo frame according to claim 1, characterized in that: The rotating shaft (305) is connected to the fixed plate (3) through the bearing seat. The outer surface of the rotating shaft (305) is connected to the bottom of the load-bearing frame (306) through two sets of bearing seats. The threads at both ends of the bidirectional lead screw (308) are opposite.

3. The polishing device for quickly fixing a photo frame according to claim 1, characterized in that: The suction cup (314) is an electric suction cup, and the transmission mechanism two is a belt transmission mechanism, including a large pulley, a small pulley and a transmission belt, wherein the center of the large pulley is fixedly connected to one end of the bidirectional lead screw (308), and the center of the small pulley is connected to the output end of the motor (304).

4. The polishing device for quickly fixing a photo frame according to claim 1, characterized in that: A collection box (302) is fixedly connected to the bottom of the grinding table (301), and a dust extraction fan (303) is installed on the back of the collection box (302).

5. The polishing device for quickly fixing a photo frame according to claim 1, characterized in that: The upper surface of the polishing table (301) is provided with a sliding groove, and a dustproof frame (4) is slidably connected inside the sliding groove. A magnetic block (401) is fixedly connected to the left side of the dustproof frame (4), and a limiting frame (402) is fixedly connected to the top of the polishing table (301). A slot (403) adapted to the magnetic block (401) is provided on the right side of the limiting frame (402).

6. The polishing device for quickly fixing a photo frame according to claim 1, characterized in that: The polishing mechanism includes a slide rail (2), a slider (202), a mounting plate (203), a motor (204), a transmission mechanism (205), a polishing shaft (206), a polishing head (207), and a cylinder (208). The slide rail (2) is fixedly connected to the top of the connecting plate (201). The slider (202) is slidably connected to the surface of the slide rail (2). The mounting plate (203) is fixedly installed on the top of the slider (202). The motor (204) is fixedly installed on the top left side of the mounting plate (203). The polishing shaft (206) is connected to the output end of the motor (204) through the transmission mechanism (205). The polishing head (207) is fixedly connected to the right end of the polishing shaft (206). The cylinder (208) is fixedly installed on the left side of the mounting plate (203).

7. A polishing device for quickly fixing a photo frame according to claim 6, characterized in that: The bottom of the cylinder (208) is fixedly connected to the top of the processing table (1). The transmission mechanism (205) includes a large pulley, a small pulley and a transmission belt. The center of the large pulley is fixedly connected to the outer surface of the grinding shaft (206), and the center of the small pulley is connected to the output end of the motor (204). The outer surface of the grinding shaft (206) is fixedly connected to the mounting plate (203) through two sets of bearing seats.

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