Frame polishing device with defect detection function

Abstract

The invention discloses a vehicle frame polishing device with a defect detection function, and relates to the technical field of sand blasting polishing, the vehicle frame polishing device comprises a sand blasting mechanical arm, a vehicle frame clamp and a sand pumping machine, the device further comprises a polishing cabin, a sand collecting cabin, two pairs of sealing doors, a track and a sand leaking plate, the sand collecting cabin is arranged at the bottom of the polishing cabin, the track penetrates through the interior of the polishing cabin, and the sand leaking plate is arranged on the vehicle frame clamp. The sand leaking plate is installed on the track through four rolling wheels, the frame clamp is arranged on the sand leaking plate, the sand blasting mechanical arm is installed in the polishing cabin, the two pairs of sealing doors are arranged on the two sides of the polishing cabin respectively, and sealing clamping blocks are arranged at the positions, corresponding to the two pairs of sealing doors, of the track. The sand pumping machine is connected with the sand collecting cabin through a pipeline, and weighing detection is carried out by utilizing the characteristic of sand leakage due to welding defects while the frame is polished, so that whether the frame has problems or not is judged, and the defect detection effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sandblasting and grinding, in particular to a frame grinding device with a defect detection function. Background Art

[0002] The frame of a bicycle is usually connected by welding. After welding, in order to carry out the subsequent processes of painting and coating, the welding position needs to be polished. There are many ways to polish, including grinding wheel grinding, sandblasting grinding, abrasive flow grinding, etc. The force of grinding wheel grinding is more concentrated and the grinding efficiency is the best. The coverage of sandblasting grinding is larger than the action point of the grinding wheel, and the grinding effect is more uniform. Abrasive flow is used for fine grinding of complex surfaces and other areas that cannot be reached by other grinding methods, but it is more expensive and more difficult to maintain. Therefore, the frame of a bicycle is usually processed by sandblasting.

[0003] After grinding, the operator also needs to inspect the welding position. Only when no welding defects are found will the next operation be carried out on the frame. Therefore, there is a lack of grinding equipment that can both grind and detect welding quality. Summary of the invention

[0004] The object of the present invention is to provide a frame grinding device with a defect detection function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a frame grinding device with defect detection function, comprising a sandblasting mechanical arm, a frame clamp and a sand extractor, the device also comprising a grinding cabin, a sand collecting cabin, two pairs of sealing doors, a track, and a sand leakage plate, the sand collecting cabin is arranged at the bottom of the grinding cabin, the track runs through the interior of the grinding cabin, the sand leakage plate is installed on the track through four rollers, the frame clamp is arranged on the sand leakage plate, the sandblasting mechanical arm is installed in the grinding cabin, the two pairs of the sealing doors are respectively arranged on both sides of the grinding cabin, and sealing clamps are arranged at positions corresponding to the two pairs of sealing doors on the track, the sand extractor is connected to the sand collecting cabin through a pipeline, the operator fixes the frame to be ground to the frame clamp, the gravity sensor weighs the frame, records the original weight data of the frame, the control system drives the small motor to rotate, the small motor drives the roller to rotate and drives the sand leakage plate to move along the track to bring the frame into the grinding cabin.

[0006] Furthermore, grooves are provided on both sides of the track, several small motors are arranged in the sand leakage plate, each of the rollers is connected to a small motor, each roller is in rolling contact with the groove, the roller is made of elastic material, a pair of gravity sensors are arranged above the sand leakage plate, and the frame clamp is installed on the sand leakage plate through the gravity sensors. As the frame enters the grinding cabin, the doors on both sides of the grinding cabin are all closed to prevent the sprayed sand from leaking to the outside of the grinding cabin, and the control system controls the sandblasting robot arm to sandblast the welding position of the frame. Grind to clean the burrs and welding slag at the welding position of the frame, and the polished sand falls into the sand collecting chamber. The sand pump works at the same time to extract the sand in the sand collecting chamber. After sand blasting and grinding, the electric push rod pushes the wave push plate outward so that the wave push plate contacts the roller. The flexible roller presses on the wave push plate, and the control system controls the roller to rotate back and forth. The sand-draining plate shakes due to the contour of the wave push plate during the back and forth movement. When the sand-draining plate changes direction, it uses inertia to shake off the sand, and shakes off the remaining sand on the frame and the sand-draining plate.

[0007] Furthermore, a long slide groove is provided at a position of the track inside the grinding cabin, and a wave push plate is slidably installed in the long slide groove, and two electric push rods are connected to the end of each wave push plate away from the roller, and the electric push rods are installed on the track. During the sandblasting and grinding process, if cracks and gaps appear at the welding position, the sand from the high-speed sandblasting will pass through the cracks and gaps and enter the frame, causing the sand inside the frame to increase rapidly, causing the frame to gain weight rapidly. After the remaining sand on the frame and the sand leakage plate is shaken off, the gravity sensor weighs the frame again, records the weight data of the frame after grinding, and compares the weight data before and after to determine whether there are welding defects in the frame. While grinding the frame, the characteristics of sand leakage due to welding defects are used to perform weighing detection to determine whether there are problems with the frame, thereby achieving the effect of defect detection.

[0008] Furthermore, external brackets are installed on both sides of the grinding chamber, and sliding rods and double-headed screws are installed on the external brackets. The sliding rods are located above the double-headed screws, and the double-headed screws are rotatably connected to the external brackets. An upper sliding block is provided at the upper end of each sealing door, and a lower sliding block is provided at the lower end of each sealing door. The upper sliding block is slidably connected to the sliding rod, and the lower sliding block is slidably connected to the double-headed screw.

[0009] Furthermore, a worm gear is provided in the middle of each of the double-headed screws, and servo motors are also provided at the bottom of both sides of the grinding chamber. A worm is installed on each servo motor, and the worm and the worm gear are meshed for transmission. The servo motor is connected to the control system circuit. When the servo motor is energized, it drives the worm to rotate, and the worm drives the worm gear to rotate. When the worm gear rotates, it also drives the double-headed screw to rotate. The thread rotation directions on both sides of the double-headed screw are different, so that the pressure plates on both sides move closer to each other or move away from each other at the same time.

[0010] Furthermore, each pair of sealing doors has a pressure plate connected to one side away from each other through a thrust spring, the upper end of each pressure plate is slidably connected to the sliding rod, and the lower end of each pressure plate is threadedly connected to the double-headed screw. When the pressure plates move towards each other, the sealing doors are driven to move by the thrust spring. When the sealing doors are closed, the pressure plates continue to move toward the middle driven by the double-headed screw, and the sealing doors are pressed tighter by the thrust spring.

[0011] Furthermore, two sliding chambers are symmetrically provided inside the grinding cabin, and sealing sliders are slidably provided inside the two sliding chambers. The sealing sliders are made of magnetic material, and the sealing sliders separate the sliding chambers into a pressurized chamber and an exhaust chamber. A magnetic column is rotatably installed on one side of the exhaust chamber close to the sealing door, and teeth are provided at the bottom of the magnetic column. A rack is slidably installed at the bottom of the grinding cabin close to each magnetic column, and one end of the rack extends out of the grinding cabin. A reset spring is connected to the rack and one end inside the grinding cabin, and the teeth are meshed with the rack.

[0012] Furthermore, a pressurized air hole is provided between the pressurized chamber and the interior of the grinding chamber, an air suction hole is provided between the pressurized chamber and the outside, a cleaning discharge hole is provided between the exhaust chamber and the interior of the grinding chamber, the cleaning discharge hole is located at a position near the sealing door at the top of the grinding chamber, and an air suction hole is also provided between the exhaust chamber and the outside. After the sealing door is closed, the interior of the grinding chamber forms a sealed state, and the pressure plate continues to move and presses against the rack, and the rack drives the magnetic column to rotate. The magnetic column repels the sealing slider through magnetic force, so that the space of the pressurized chamber is reduced and the space of the exhaust chamber is increased, and the gas in the pressurized chamber is squeezed into the interior of the grinding chamber. The pressure sensor detects the air pressure inside the grinding chamber. If the sealing door is effectively sealed, the air pressure inside the grinding chamber increases. If the sealing door is ineffectively sealed, the gas inside the grinding chamber leaks from the sealing door position, and the equipment will not perform subsequent grinding operations. The pressure sensor detects the change in air pressure inside the grinding chamber after the sealing door is closed, thereby achieving the purpose of sealing detection and preventing the occurrence of sand leakage.

[0013] Furthermore, the pressurized air hole, the cleaning exhaust hole and the two air suction holes are all provided with a one-way air inlet valve. After the grinding is completed, the sealing door needs to be opened, and the servo motor drives the double-headed screw to separate the pressure plates from each other. At this time, the sealing door cannot be separated under the pressure of the thrust spring. The rack is pushed outward under the action of the reset spring, and the rack drives the magnetic column to rotate. When the magnetic column rotates half a circle, it has an attractive effect on the sealing slider, and the space of the exhaust chamber is compressed, and the space of the pressurized chamber is increased. The gas in the exhaust chamber is blown out through the cleaning exhaust hole to blow off the sand attached to the contact position of the sealing door and the grinding cabin, so as to prevent the sand from falling out of the grinding cabin after the sealing door is opened.

[0014] Furthermore, a pressure sensor is provided inside the polishing chamber, and the pressure sensor is connected to the control system circuit.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. If cracks and gaps appear at the welding position, the sand from high-speed sandblasting will pass through the cracks and gaps and enter the interior of the frame, causing the frame to gain weight rapidly. While grinding the frame, the characteristics of sand leakage due to welding defects are used for weighing detection to determine whether there are any problems with the frame and achieve the effect of defect detection.

[0017] 2. After the sealing door is closed, the interior of the grinding chamber forms a sealed state, and the space of the pressurized chamber is subsequently reduced, causing the pressure inside the grinding chamber to increase. The pressure sensor detects the air pressure inside the grinding chamber. If the sealing door is ineffectively sealed, the gas inside the grinding chamber leaks from the sealing door position, thereby achieving the purpose of sealing detection and preventing the occurrence of sand leakage.

[0018] 3. When the sealed door needs to be opened after grinding, the gas in the exhaust chamber is blown out through the clean exhaust hole to blow off the sand attached to the contact position between the sealed door and the grinding chamber to prevent sand from falling out of the grinding chamber after the sealed door is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall appearance structure of the present invention is schematically shown Figure 1 ;

[0020] Figure 2 The overall appearance structure of the present invention is schematically shown Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the local appearance structure of the present invention Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the local appearance structure of the present invention Figure 2 ;

[0023] Figure 5It is a schematic diagram of the internal structure of the grinding cabin of the present invention;

[0024] Figure 6 The installation structure of the sand drain plate of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 7 The installation structure of the sand drain plate of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 8 It is a structural schematic diagram of the wave push plate of the present invention;

[0027] In the figure: 1. grinding cabin; 2. sand collecting cabin; 3. sealing door; 4. track; 5. sealing clamp; 6. outer bracket; 7. sliding rod; 8. double-headed screw; 9. pressure plate; 10. thrust spring; 11. worm gear; 12. worm; 13. servo motor; 14. rack; 15. magnetic column; 16. sealing slider; 17. pressurized air hole; 18. cleaning hole; 19. suction hole; 20. sand leakage plate; 21. roller; 22. gravity sensor; 23. electric push rod; 24. wave push plate. DETAILED DESCRIPTION

[0028] 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.

[0029] Example: Figure 1-Figure 8 As shown, the present invention provides a technical solution, a frame grinding device with defect detection function, including a sandblasting mechanical arm (not shown in the figure) and a frame fixture (not shown in the figure) and a sand pump, the device also includes a grinding cabin 1, a sand collecting cabin 2, two pairs of sealing doors 3, a track 4, and a sand leakage plate 20, the sand collecting cabin 2 is arranged at the bottom of the grinding cabin 1, the track 4 runs through the inside of the grinding cabin 1, the sand leakage plate 20 is installed on the track 4 through four rollers 21, the frame fixture is arranged on the sand leakage plate 20, the sandblasting mechanical arm is installed in the grinding cabin 1, and the two pairs of sealing doors 3 are respectively Sealing clamps 5 are arranged on both sides of the grinding cabin 1, and the positions of the two pairs of sealing doors 3 on the track 4 are corresponding. The sand pumping machine is connected to the sand collecting cabin 2 through a pipeline. A pressure sensor is arranged inside the grinding cabin 1, and the pressure sensor is connected to the control system circuit. The operator fixes the frame to be ground to the frame clamp, and the gravity sensor 22 weighs the frame and records the original weight data of the frame. The control system drives the small motor to rotate, and the small motor drives the roller 21 to rotate and drives the sand leakage plate 20 to move along the track 4, bringing the frame into the grinding cabin 1.

[0030] Grooves are provided on both sides of the track 4, and several small motors are arranged in the sand leakage plate 20. Each roller 21 is connected to a small motor, and each roller 21 is in rolling contact with the groove. The roller 21 is made of elastic material. A pair of gravity sensors 22 are arranged above the sand leakage plate 20, and the frame clamp is installed on the sand leakage plate 20 through the gravity sensor 22. A long slide groove is provided at the position of the track 4 inside the grinding cabin 1, and a wave push plate 24 is slidably installed in the long slide groove. Two electric push rods 23 are connected to the end of each wave push plate 24 away from the roller 21, and the electric push rod 23 is installed on the track 4. As the frame enters the grinding cabin 1, the doors on both sides of the grinding cabin 1 are all closed to prevent the sprayed sand from leaking into the grinding cabin 1. Outside the grinding chamber 1, the control system controls the sandblasting robot arm to sandblast and grind the welding position of the frame, and grinds away the burrs and welding slag at the welding position of the frame. The polished sand falls into the sand collecting chamber 2, and the sand pump works at the same time to extract the sand in the sand collecting chamber 2. After the sandblasting is completed, the electric push rod 23 pushes the wave push plate 24 outward, so that the wave push plate 24 contacts the roller 21, and the flexible roller 21 is pressed on the wave push plate 24. The control system controls the roller 21 to rotate back and forth. The sand leakage plate 20 shakes due to the contour of the wave push plate 24 during the back and forth movement. When the sand leakage plate 20 changes direction, it uses inertia to shake off the sand, and shakes off the residual sand on the frame and the sand leakage plate 20.

[0031] During the sandblasting process, if cracks and gaps appear at the welding position, the sand from the high-speed sandblasting will pass through the cracks and gaps and enter the interior of the frame, causing the sand inside the frame to increase rapidly and causing the frame to gain weight rapidly. After the remaining sand on the frame and the sand leakage plate 20 is shaken off, the gravity sensor 22 weighs the frame again, records the weight data of the frame after grinding, and compares the weight data before and after to determine whether there are welding defects in the frame. While grinding the frame, the characteristics of sand leakage due to welding defects are used to perform weighing detection to determine whether there are problems with the frame, thereby achieving the effect of defect detection.

[0032] External brackets 6 are installed on both sides of the grinding chamber 1, and sliding rods 7 and double-headed screws 8 are installed on the external brackets 6. The sliding rods 7 are located above the double-headed screws 8, and the double-headed screws 8 are rotatably connected to the external brackets 6. An upper sliding block is provided at the upper end of each sealing door 3, and a lower sliding block is provided at the lower end of each sealing door 3. The upper sliding block is slidably connected to the sliding rod 7, and the lower sliding block is slidably connected to the double-headed screws 8. A worm gear 11 is provided in the middle of each double-headed screw 8. Servo motors 13 are also provided at the bottom of both sides of the grinding chamber 1. A worm 12 is installed on each servo motor 13, and the worm 12 is meshed with the worm gear 11 for transmission. The servo motor 13 is connected to the control system circuit, and each pair of sealing doors 3 is away from each other. Each side is connected to a pressure plate 9 through a thrust spring 10. The upper end of each pressure plate 9 is slidably connected to the slide rod 7, and the lower end of each pressure plate 9 is threadedly connected to the double-headed screw 8. When the servo motor 13 is energized, it drives the worm 12 to rotate, and the worm 12 drives the worm wheel 11 to rotate. When the worm wheel 11 rotates, it drives the double-headed screw 8 to rotate. The threads on both sides of the double-headed screw 8 have different rotation directions, so that the pressure plates 9 on both sides move closer to each other or move away from each other at the same time. When the pressure plates 9 move closer to each other, the sealing door 3 is driven to move by the thrust spring 10. When the sealing door 3 is closed, the pressure plate 9 continues to move toward the middle driven by the double-headed screw 8, and the sealing door 3 is pressed tighter by the thrust spring 10.

[0033] The interior of the grinding cabin 1 is symmetrically provided with two sliding chambers, and the interiors of the two sliding chambers are slidably provided with sealing sliders 16, which are made of magnetic material. The sealing slider 16 separates the sliding chamber into a pressurized chamber and an exhaust chamber, and a magnetic column 15 is rotatably installed on one side of the exhaust chamber near the sealing door 3, and teeth are provided at the bottom of the magnetic column 15. A rack 14 is slidably installed at the bottom of the grinding cabin 1 near each magnetic column 15, and one end of the rack 14 extends out of the grinding cabin 1, and a reset spring is connected to one end of the rack 14 and the interior of the grinding cabin 1, and the teeth are meshed with the rack 14. A pressurized air hole 17 is provided between the pressurized chamber and the interior of the grinding cabin 1, an air suction hole 19 is provided between the pressurized chamber and the outside, a cleaning hole 18 is provided between the exhaust chamber and the inside of the grinding cabin 1, and the cleaning hole 18 is located at the top of the grinding cabin 1 near the sealing door 3, and an air suction hole 19 is also provided between the exhaust chamber and the outside. One-way air inlet valves (not shown) are provided in hole 19, pressurized air hole 17, cleaning discharge hole 18 and two air suction holes 19. After the sealing door 3 is closed, the interior of the grinding chamber 1 forms a sealed state. The pressure plate 9 continues to move and presses against the rack 14. The rack 14 drives the magnetic column 15 to rotate. The magnetic column 15 repels the sealing slider 16 through magnetic force, so that the space of the pressurized chamber is reduced and the space of the exhaust chamber is increased. The gas in the pressurized chamber is squeezed into the grinding chamber 1. The pressure sensor detects the internal air pressure of the grinding chamber 1. If the sealing door 3 is effectively sealed, the air pressure inside the grinding chamber 1 increases. If the sealing door 3 is ineffectively sealed, the gas inside the grinding chamber 1 leaks from the position of the sealing door 3, and the equipment will not perform subsequent grinding operations. The pressure sensor detects the change of air pressure inside the grinding chamber 1 after the sealing door 3 is closed, thereby achieving the purpose of sealing detection and preventing the occurrence of sand leakage.

[0034] After grinding, the sealing door 3 needs to be opened, and the servo motor 13 drives the double-headed screw 8, and the pressure plates 9 are separated from each other. At this time, the sealing door 3 is still pressed by the thrust spring 10 and cannot be separated. The rack 14 is pushed outward under the action of the reset spring, and the rack 14 drives the magnetic column 15 to rotate. The magnetic column 15 rotates half a circle, which has an attractive effect on the sealing slider 16. The space of the exhaust chamber is compressed, and the space of the pressurized chamber is increased. The gas in the exhaust chamber is blown out through the cleaning discharge hole 18, and the sand attached to the connection contact position of the sealing door 3 and the grinding chamber 1 is blown off to prevent the sand from falling out of the grinding chamber 1 after the sealing door 3 is opened.

[0035] The working principle of the present invention is as follows: the operator fixes the frame to be polished to the frame clamp, the gravity sensor 22 weighs the frame, records the original weight data of the frame, the control system drives the small motor to rotate, the small motor drives the roller 21 to rotate and drives the sand leaking plate 20 to move along the track 4, and brings the frame into the polishing cabin 1.

[0036] As the vehicle frame enters the grinding cabin 1, the doors on both sides of the grinding cabin 1 are all closed to prevent the sprayed sand from leaking to the outside of the grinding cabin 1. The control system controls the sandblasting robot arm to sandblast and grind the welding position of the vehicle frame, and grind the burrs and welding slag at the welding position of the frame clean. The polished sand falls into the sand collecting cabin 2, and the sand pump works at the same time to extract the sand in the sand collecting cabin 2. After the sandblasting is completed, the electric push rod 23 pushes the wave push plate 24 outward, so that the wave push plate 24 contacts the roller 21, and the flexible roller 21 presses on the wave push plate 24. The control system controls the roller 21 to rotate back and forth. The sand leakage plate 20 shakes due to the contour of the wave push plate 24 during the back and forth movement. When the sand leakage plate 20 changes direction, it uses inertia to shake off the sand, and shakes off the residual sand on the vehicle frame and the sand leakage plate 20.

[0037] During the sandblasting process, if cracks and gaps appear at the welding position, the sand from the high-speed sandblasting will pass through the cracks and gaps and enter the interior of the frame, causing the sand inside the frame to increase rapidly and causing the frame to gain weight rapidly. After the remaining sand on the frame and the sand leakage plate 20 is shaken off, the gravity sensor 22 weighs the frame again, records the weight data of the frame after grinding, and compares the weight data before and after to determine whether there are welding defects in the frame. While grinding the frame, the characteristics of sand leakage due to welding defects are used to perform weighing detection to determine whether there are problems with the frame, thereby achieving the effect of defect detection.

[0038] When the servo motor 13 is powered on, it drives the worm 12 to rotate, and the worm 12 drives the worm wheel 11 to rotate. The rotation of the worm wheel 11 drives the double-headed screw 8 to rotate at the same time. The threads on both sides of the double-headed screw 8 have different rotation directions, so that the pressure plates 9 on both sides move closer to each other or move away from each other at the same time. When the pressure plates 9 move closer to each other, the thrust spring 10 drives the sealing door 3 to move. When the sealing door 3 is closed, the pressure plate 9 continues to move toward the middle driven by the double-headed screw 8, and the sealing door 3 is pressed tighter by the thrust spring 10.

[0039] After the sealing door 3 is closed, the interior of the grinding chamber 1 forms a sealed state, and the pressure plate 9 continues to move and presses against the rack 14. The rack 14 drives the magnetic column 15 to rotate. The magnetic column 15 repels the sealing slider 16 through magnetic force, so that the space of the pressurized chamber is reduced and the space of the exhaust chamber is increased. The gas in the pressurized chamber is squeezed into the grinding chamber 1, and the pressure sensor detects the internal air pressure of the grinding chamber 1. If the sealing door 3 is effectively sealed, the air pressure inside the grinding chamber 1 increases. If the sealing door 3 is ineffectively sealed, the gas inside the grinding chamber 1 leaks from the position of the sealing door 3, and the equipment will not perform subsequent grinding operations. The pressure sensor detects the change of the air pressure inside the grinding chamber 1 after the sealing door 3 is closed, thereby achieving the purpose of sealing detection and preventing the occurrence of sand leakage.

[0040] After grinding, the sealing door 3 needs to be opened, and the servo motor 13 drives the double-headed screw 8, and the pressure plates 9 are separated from each other. At this time, the sealing door 3 is still pressed by the thrust spring 10 and cannot be separated. The rack 14 is pushed outward under the action of the reset spring, and the rack 14 drives the magnetic column 15 to rotate. The magnetic column 15 rotates half a circle, which has an attractive effect on the sealing slider 16. The space of the exhaust chamber is compressed, and the space of the pressurized chamber is increased. The gas in the exhaust chamber is blown out through the cleaning discharge hole 18, and the sand attached to the connection contact position of the sealing door 3 and the grinding chamber 1 is blown off to prevent the sand from falling out of the grinding chamber 1 after the sealing door 3 is opened.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A frame grinding device with defect detection function, comprising a sandblasting mechanical arm, a frame fixture and a sand pump, characterized in that: The device comprises a grinding chamber (1), a sand collecting chamber (2), two pairs of sealing doors (3), a track (4), and a sand leakage plate (20); the sand collecting chamber (2) is arranged at the bottom of the grinding chamber (1); the track (4) runs through the inside of the grinding chamber (1); the sand leakage plate (20) is mounted on the track (4) via four rollers (21); the frame clamp is arranged on the sand leakage plate (20); the sand blasting mechanical arm is mounted in the grinding chamber (1); the two pairs of sealing doors (3) are respectively arranged on both sides of the grinding chamber (1); sealing clamps (5) are arranged on the track (4) at positions corresponding to the two pairs of sealing doors (3); and the sand pumping machine is connected to the sand collecting chamber (2) via a pipeline.

2. A frame grinding device with defect detection function according to claim 1, characterized in that: Grooves are provided on both sides of the track (4), a plurality of small motors are arranged in the sand leakage plate (20), each of the rollers (21) is connected to a small motor, each roller (21) is in rolling contact with the groove, the rollers (21) are made of elastic material, a pair of gravity sensors (22) are arranged above the sand leakage plate (20), and the frame clamp is installed on the sand leakage plate (20) through the gravity sensors (22).

3. A frame grinding device with defect detection function according to claim 1, characterized in that: The track (4) is provided with a long slide groove at a position inside the grinding chamber (1), and a wave push plate (24) is slidably installed in the long slide groove. Two electric push rods (23) are connected to one end of each wave push plate (24) away from the roller (21), and the electric push rods (23) are installed on the track (4).

4. A frame grinding device with defect detection function according to claim 1, characterized in that: External brackets (6) are installed on both sides of the grinding chamber (1), and sliding rods (7) and double-headed screws (8) are installed on the external brackets (6). The sliding rods (7) are located above the double-headed screws (8), and the double-headed screws (8) are rotatably connected to the external brackets (6). An upper sliding block is provided at the upper end of each of the sealing doors (3), and a lower sliding block is provided at the lower end of each of the sealing doors (3). The upper sliding block is slidably connected to the sliding rods (7), and the lower sliding block is slidably connected to the double-headed screws (8).

5. A frame grinding device with defect detection function according to claim 4, characterized in that: A worm wheel (11) is arranged in the middle of each double-headed screw (8), and servo motors (13) are also arranged at the bottom of both sides of the grinding chamber (1). A worm (12) is installed on each servo motor (13), and the worm (12) is meshed with the worm wheel (11) for transmission. The servo motor (13) is connected to the control system circuit.

6. A frame grinding device with defect detection function according to claim 4, characterized in that: The side of each pair of sealing doors (3) that is away from each other is connected to a pressure plate (9) via a thrust spring (10); the upper end of each pressure plate (9) is slidably connected to the slide rod (7); and the lower end of each pressure plate (9) is threadedly connected to the double-headed screw (8).

7. A frame grinding device with defect detection function according to claim 6, characterized in that: The polishing chamber (1) has two sliding chambers symmetrically arranged inside, and sealing sliders (16) are slidably arranged inside the two sliding chambers. The sealing sliders (16) are made of magnetic material, and the sealing sliders (16) separate the sliding chamber into a pressurized chamber and an exhaust chamber. A magnetic column (15) is rotatably installed on one side of the exhaust chamber near the sealing door (3), and teeth are arranged at the bottom of the magnetic column (15). A rack (14) is slidably installed at the bottom of the polishing chamber (1) near each magnetic column (15), and one end of the rack (14) extends out of the polishing chamber (1). A reset spring is connected to one end of the rack (14) inside the polishing chamber (1), and the teeth are meshed with the rack (14).

8. The frame grinding device with defect detection function according to claim 7, characterized in that: A pressurizing air hole (17) is provided between the pressurizing chamber and the interior of the polishing chamber (1), an air suction hole (19) is provided between the pressurizing chamber and the exterior, a cleaning discharge hole (18) is provided between the exhaust chamber and the interior of the polishing chamber (1), the cleaning discharge hole (18) is located at a position near the sealing door (3) at the top of the polishing chamber (1), and an air suction hole (19) is also provided between the exhaust chamber and the exterior.

9. A frame grinding device with defect detection function according to claim 8, characterized in that: The pressurized air hole (17), the cleaning discharge hole (18) and the two air intake holes (19) are all provided with one-way air inlet valves.

10. The frame grinding device with defect detection function according to claim 1, characterized in that: A pressure sensor is arranged inside the polishing chamber (1), and the pressure sensor is connected to a control system circuit.

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