Sanding machine with abrasive belt deviation prevention function

Abstract

The sanding machine with the sanding belt deviation preventing function comprises a machine body and a deviation preventing device, the machine body comprises a workpiece conveying device, a contact wheel, a tensioning wheel and a top plate which are sequentially arranged at intervals from bottom to top, a front plate and a rear plate are arranged on the front side and the rear side of the top plate respectively, and the output end of a motor penetrates through the rear plate to be connected with the contact wheel. The contact wheel and the tensioning wheel are rotationally connected through an abrasive belt, slotted holes are formed in the front plate and the rear plate, and auxiliary shafts are placed in the slotted holes. The deviation preventing device comprises two limiting plates which are located on the two sides of the tensioning wheel and fixedly connected with the auxiliary shaft, and each limiting plate is provided with a laser sensor. The deviation preventing device further comprises two lifting mechanisms arranged on the front plate and the rear plate. According to the sander with the abrasive belt deviation prevention function, through the action of the deviation prevention device, the deviation abrasive belt is reset when the sander works, shutdown is not needed, and the workpiece machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sanding machines, in particular to a sanding machine with a sanding belt anti-deviation function. Background Art

[0002] Sanding refers to a method of physically removing some materials and objects with uneven surfaces, uneven thickness or not meeting the process requirements through abrasive cloth, grinding wheel, sandpaper, etc., so that the surface of the workpiece is smoother, the thickness is uniform, and the process meets the requirements. In daily production work, sanding work is mainly completed by sanding machines.

[0003] When the sanding machine is working, the power roller and the tension roller cooperate to drive the sanding belt to rotate, and then the high-speed rotating sanding belt grinds the surface of the workpiece to complete the polishing and grinding of the workpiece. However, in the prior art, when the sanding machine is working, the high-speed rotating sanding belt is subjected to the force applied by the external workpiece, which may cause a certain degree of deviation, and even cause the overlapped belt and the damage of the sanding belt. At this time, the sanding machine needs to be stopped and the sanding belt needs to be reset or replaced. The occurrence of this situation greatly reduces the efficiency of workpiece processing. Utility Model Content

[0004] The utility model provides a sanding machine with a sanding belt anti-deviation function, which is used to solve the problem that the sanding belt is easy to deviate during the working process of the sanding machine, thereby reducing the processing efficiency of the workpiece.

[0005] The utility model provides a sanding machine with a sanding belt anti-deviation function, including a machine body and an anti-deviation device, the machine body includes a workpiece conveying device, a contact wheel, a tensioning wheel and a top plate arranged in sequence from bottom to top, a front plate and a rear plate are respectively arranged on the front and rear sides of the top plate, the output end of the motor passes through the rear plate and is connected to the contact wheel, the contact wheel and the tensioning wheel are rotatably connected through the sanding belt, slots are symmetrically provided on the front plate and the rear plate, an auxiliary shaft which is coaxially arranged and rotatably connected to the tensioning wheel is placed in the slot. The anti-deviation device includes two limit plates located on both sides of the tensioning wheel and fixedly connected to the auxiliary shaft, and a laser sensor is arranged on each limit plate. The anti-deviation device also includes two lifting mechanisms arranged on the front plate and the rear plate, the lifting mechanism includes a circular ring sleeved with the auxiliary shaft, a telescopic rod is connected below the circular ring, and the telescopic rod is connected to the cylinder. The laser sensor and the cylinder are both electrically connected to the controller.

[0006] Optionally, the top plate is hinged to the front plate, and the height of the front plate is 1 / 5-1 / 4 of the height of the rear plate.

[0007] Optionally, connecting blocks are symmetrically arranged on both sides of the tensioning wheel, the connecting blocks are interference fit with the inner ring of the bearing, and the auxiliary shaft is interference fit with the outer ring of the bearing.

[0008] Optionally, contact sensors are provided at the top and the bottom of the slot, and the contact sensors are electrically connected to the controller.

[0009] Optionally, the workpiece conveying device includes a driving shaft and a driven shaft, the driving shaft is connected to the driver, and the driving shaft and the driven shaft are rotatably connected through a conveyor belt. A support block is installed between the upper and lower conveyor belts, and a bracket is installed on each of the front and rear sides of the support block, and the rear plate and the bracket are installed on the bottom plate.

[0010] Optionally, the middle of the support block is concave to form an empty slot, a grid flush with the upper surface of the support block is installed on the empty slot, a collection tray is placed in the empty slot, and a handle is installed at the front end of the collection tray.

[0011] Optionally, the conveyor belt is a hollow conveyor belt.

[0012] Optionally, fastening devices are symmetrically installed on both sides of the contact wheel.

[0013] The beneficial effects of the sanding machine with the sanding belt anti-deviation function provided by the utility model include: 1. Through the function of the anti-deviation device, the deviated sanding belt can be reset while the sanding machine is working without stopping the machine, thereby improving the efficiency of workpiece processing.

[0014] 2. By setting a contact sensor on the slot hole, the control method for the height of the auxiliary shafts on both sides is increased, thereby improving the efficiency of the sanding belt returning to the center.

[0015] 3. By opening an empty slot on the support block and placing a collection plate in the empty slot, the metal debris generated during the grinding process can be recycled, thereby improving the resource recycling rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a sanding machine with a sanding belt anti-deviation function provided in Example 1 of the utility model;

[0018] Figure 2 This is an enlarged schematic diagram of the upper part of the structure of the sanding machine with the sanding belt anti-deviation function provided in Example 1 of the utility model;

[0019] Figure 3 A schematic diagram of the connection relationship between the tensioning wheel and the auxiliary shaft provided in Example 1 of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a workpiece conveying device provided in Example 2 of the utility model;

[0021] Figure 5 This is a schematic structural diagram of a sanding machine with a sanding belt anti-deviation function provided in Example 2 of the utility model.

[0022] Description of reference numerals:

[0023] 3-empty slot, 4-fastening device, 10-abrasive belt, 11-workpiece conveying device, 12-contact wheel, 13-tensioning wheel, 14-top plate, 15-front plate, 16-rear plate, 17-motor, 18-slot hole, 19-auxiliary shaft, 21-limiting plate, 22-laser sensor, 23-lifting mechanism, 24-ring, 25-telescopic rod, 26-cylinder, 27-controller, 31-grid, 32-collection tray, 33-handle, 111-driving shaft, 112-driven shaft, 113-driver, 114-conveyor belt, 115-support block, 116-bracket, 117-bottom plate, 131-connecting block, 132-bearing. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the utility model.

[0025] like Figure 1 and Figure 2 As shown, the utility model provides a sanding machine with a sanding belt anti-deviation function, including a machine body and an anti-deviation device, the machine body includes a workpiece conveying device 11, a contact wheel 12, a tension wheel 13 and a top plate 14 arranged in sequence from bottom to top, and a front plate 15 and a rear plate 16 are respectively arranged on the front and rear sides of the top plate 14, the output end of the motor 17 passes through the rear plate 16 and is connected to the contact wheel 12, the contact wheel 12 and the tension wheel 13 are rotatably connected through the sanding belt 10, and slots 18 are symmetrically opened on the front plate 15 and the rear plate 16, and an auxiliary shaft 19 coaxially arranged and rotatably connected to the tension wheel 13 is placed in the slot 18. The anti-deviation device includes two limit plates 21 located on both sides of the tension wheel 13 and fixedly connected to the auxiliary shaft 19, and each limit plate 21 is provided with a laser sensor 22. The anti-bias device further includes two lifting mechanisms 23 disposed on the front plate 15 and the rear plate 16. The lifting mechanism 23 includes a ring 24 sleeved with the auxiliary shaft 19. A telescopic rod 25 is connected below the ring 24. The telescopic rod 25 is connected to a cylinder 26. The laser sensor 22 and the cylinder 26 are both electrically connected to a controller 27.

[0026] When the sanding machine with the anti-deviation function of the abrasive belt is working, the workpiece to be processed is placed on the workpiece conveying device 11. Under the transportation of the workpiece conveying device 11, the workpiece passes under the contact wheel 12 and the abrasive belt 10. The motor 17 drives the contact wheel 12 to rotate, the contact wheel 12 drives the abrasive belt 10 to rotate, and the abrasive belt 10 drives the tensioning wheel 13 to operate. When the workpiece passes through the contact wheel 12, the polishing and grinding work is completed under the friction of the high-speed running abrasive belt 10.

[0027] When the sand belt 10 deviates during high-speed operation, it will first be blocked by the limit plates 21 on both sides of the tension wheel 13 to prevent the sand belt 10 from falling off the tension wheel 13. There are two situations after the sand belt 10 is blocked by the limit plates 21. One is that it gradually resets during the rotation, and the other is that the sand belt 10 continues to deviate to one side and accumulate. Since the sand belt 10 has a certain thickness and the laser sensor 10 is a high-precision sensor, when the sand belt 10 continues to deviate, the change in thickness will be detected by the laser sensor 22, and then the signal will be transmitted to the controller 27, and then the controller 27 controls the cylinder 26 to drive the telescopic rod 25 to rise and fall accordingly. The lifting of the telescopic rod 25 will drive the auxiliary shaft 19 and the tension wheel 13 to rise and fall. During the rotation process, the sand belt 10 follows the principle of "running high but not low", that is, the sand belt 10 will deviate to the higher end of the tension wheel 3. Therefore, when the sanding belt 10 deviates, the controller 27 controls the cylinder 26 in the opposite direction of the deviation of the sanding belt 10 to work, and drives the telescopic rod 25 on this side to rise slightly. The slight rise of the telescopic rod 25 drives the auxiliary shaft 19 and the tensioning wheel 13 to rise slightly, so that the sanding belt 10 returns to the normal position.

[0028] The ring 24 is sleeved on the auxiliary shaft 19 and is used to connect the auxiliary shaft 19 and the telescopic rod 25. The top plate 14, the front plate 15 and the rear plate 16 serve as the supporting part of the machine body, and provide support points for the contact wheel 12, the tension wheel 13 and the anti-deviation device. The sanding machine with the anti-deviation function of the sanding belt provided by the utility model can realize the reset of the sanding belt 10 while the sanding machine is working through the anti-deviation device when the sanding belt 10 deviates during the rotation process, without stopping the machine, thereby improving the efficiency of workpiece processing.

[0029] Furthermore, the top plate 14 is hinged to the front plate 15 , and the height of the front plate 15 is 1 / 5-1 / 4 of the height of the rear plate 16 .

[0030] The top plate 14 is hinged to the front plate 15 . When the abrasive belt 10 needs to be replaced, the front plate 15 can be lifted up and the abrasive belt 10 can be replaced.

[0031] like Figure 3As shown, further, connecting blocks 131 are symmetrically arranged on both sides of the tension wheel 13 , the connecting blocks 131 are interference fit with the inner ring of the bearing 132 , and the auxiliary shaft 19 is interference fit with the outer ring of the bearing 132 .

[0032] The auxiliary shaft 19 and the tension wheel 13 are rotatably connected via the bearing 132, so that the auxiliary shaft 19 remains stationary while the tension wheel 13 rotates, thereby facilitating the telescopic rod 25 to drive it up and down. The two sides of the bearing 132 are respectively interference-fitted with the connecting block 131 and the auxiliary shaft 19, thereby improving the stability of the connection between the devices.

[0033] Furthermore, contact sensors are disposed on the top and bottom of the slot 18 , and the contact sensors are electrically connected to the controller 27 .

[0034] Contact sensors are respectively provided at the top and bottom of the front and rear slots 18. When the auxiliary shafts 19 on both sides of the tension wheel 13 move downward or upward under the push of the telescopic rod 25 until they contact the contact sensors, the contact sensors transmit signals to the controller 27, and the controller 27 further controls the working state of the cylinder 26. Take the upward movement of the auxiliary shaft 19 and the contact with the contact sensor as an example: when the sanding belt 10 deviates backward, the front cylinder 26 pushes the front telescopic rod 25 to rise. When the auxiliary shaft 19 moves upward until it contacts the contact sensor, but the sanding belt 10 has not returned to the original position, the signal of the contact sensor is transmitted to the controller 27, and the controller 27 controls the front cylinder 26 to stop pushing the telescopic rod 25 upward, and controls the rear cylinder 26 to retract the rear telescopic rod 25, so that the sanding belt 10 gradually returns to the original position.

[0035] By controlling the height of the tensioning wheel 13 in both directions, the efficiency of returning the abrasive belt 10 to the correct position is improved.

[0036] like Figure 4 and Figure 5 As shown, further, the workpiece conveying device 11 includes a driving shaft 111 and a driven shaft 112, the driving shaft is connected to a driver 113, and the driving shaft 111 and the driven shaft 112 are rotatably connected through a conveyor belt 114. A support block 115 is installed between the upper and lower conveyor belts 114, and a bracket 116 is installed on each of the front and rear sides of the support block 115, and the rear plate 16 and the bracket 116 are both installed on the bottom plate 117. Further, the middle part of the support block 115 is concave to form a hollow groove 3, and a grid 31 flush with the upper surface of the support block 115 is installed on the hollow groove 3, and a collection tray 32 is placed in the hollow groove 3, and a handle 33 is installed at the front end of the collection tray 32. Further, the conveyor belt 114 is a hollow conveyor belt. Further, fastening devices 4 are symmetrically installed on both sides of the contact wheel 12.

[0037] A support block 115 is installed between the upper and lower conveyor belts 114 to provide an upward support force to the workpiece, so that when the workpiece is in contact with the abrasive belt 10 for grinding, the contact between the two is closer, thereby improving the grinding effect.

[0038] During the grinding process of the workpiece, a lot of metal debris will be generated. Under the action of gravity, this part of the metal debris passes through the grid 31 and falls into the collection tray 32 in the empty slot 3 for collection. When a certain amount of metal debris in the collection tray 32 is collected, the collection tray 32 is pulled out through the handle 33, and the metal debris is recycled, thereby improving the resource recycling rate. The hollow conveyor belt allows metal debris to pass through. The grid 31 not only allows the metal debris to pass through, but also supports the conveyor belt 114. A bracket 116 is installed on each of the front and rear sides of the support block 115, and the rear plate 16 and the bracket 116 are both installed on the bottom plate 117. The above-mentioned parts cooperate with each other to improve the overall stability of the sanding machine.

[0039] The fastening device 4 is used to press down the workpiece on the conveyor belt 114 to maintain the stability of the workpiece during grinding and prevent it from running off the track. This is a technical content well known to those skilled in the art and will not be described in detail here.

[0040] The present invention is further described in detail below in conjunction with specific embodiments.

[0041] Example 1

[0042] like Figure 1-3 As shown, in the sanding machine with the function of preventing the abrasive belt from deflecting, when the workpiece to be processed is in operation, the workpiece is placed on the workpiece conveying device 11, and the workpiece passes under the contact wheel 12 and the abrasive belt 10 under the transportation of the workpiece conveying device 11. The motor 17 drives the contact wheel 12 to rotate, and the contact wheel 12 drives the abrasive belt 10 to rotate, and the abrasive belt 10 drives the tensioning wheel 13 to rotate. When the workpiece passes through the contact wheel 12, the polishing and grinding work is completed under the friction of the high-speed running abrasive belt 10.

[0043] When the sand belt 10 deviates during high-speed operation, it will first be blocked by the limit plates 21 on both sides of the tension wheel 13 to prevent the sand belt 10 from falling off the tension wheel 13. There are two situations after the sand belt 10 is blocked by the limit plates 21. One is that it gradually resets during the rotation, and the other is that the sand belt 10 continues to deviate to one side and accumulate. Since the sand belt 10 has a certain thickness and the laser sensor 10 is a high-precision sensor, when the sand belt 10 continues to deviate, the change in thickness will be detected by the laser sensor 22, and then the signal will be transmitted to the controller 27, and then the controller 27 controls the cylinder 26 to drive the telescopic rod 25 to rise and fall accordingly. The lifting of the telescopic rod 25 will drive the auxiliary shaft 19 and the tension wheel 13 to rise and fall. During the rotation process, the sand belt 10 follows the principle of "running high but not low", that is, the sand belt 10 will deviate to the higher end of the tension wheel 3. Therefore, when the sanding belt 10 deviates, the controller 27 controls the cylinder 26 in the opposite direction of the sanding belt 10 to work, and drives the telescopic rod 25 on this side to slightly rise, and the slight rise of the telescopic rod 25 drives the auxiliary shaft 19 and the tension wheel 13 to slightly rise, so that the sanding belt 10 returns to the right position. It should be noted that the position of the controller 27 can be determined according to the specific usage.

[0044] The ring 24 is sleeved on the auxiliary shaft 19 and is used to connect the auxiliary shaft 19 and the telescopic rod 25. The top plate 14, the front plate 15 and the rear plate 16 serve as the supporting part of the machine body and provide support points for the contact wheel 12, the tension wheel 13 and the anti-bias device. The top plate 14 is hinged to the front plate 15. When the abrasive belt 10 needs to be replaced, the front plate 15 can be lifted and then the abrasive belt 10 can be replaced.

[0045] Contact sensors are respectively provided at the top and bottom of the front and rear slots 18. When the auxiliary shafts 19 on both sides of the tension wheel 13 move downward or upward under the push of the telescopic rod 25 until they contact the contact sensors, the contact sensors transmit signals to the controller 27, and the controller 27 further controls the working state of the cylinder 26. Take the upward movement of the auxiliary shaft 19 and contact with the contact sensor as an example: when the sanding belt 10 deviates backward, the front cylinder 26 pushes the front telescopic rod 25 to rise. When the auxiliary shaft 19 moves upward until it contacts the contact sensor, but the sanding belt 10 has not returned to the original position, the signal of the contact sensor is transmitted to the controller 27, and the controller 27 controls the front cylinder 26 to stop pushing the telescopic rod 25 upward, but controls the rear cylinder 26 to retract the rear telescopic rod 25, so that the sanding belt 10 gradually returns to the original position.

[0046] Example 2

[0047] like Figure 4 and Figure 5As shown, on the basis of Example 1, Example 2 provides an equipment structure for recovering the slag removed by grinding and improving the stability of the workpiece during grinding: a support block 115 is installed between the upper and lower conveyor belts 114 to provide an upward supporting force to the workpiece, so that when the workpiece is in contact with the sanding belt 10 for grinding, the contact between the two is closer, thereby improving the grinding effect.

[0048] During the grinding process of the workpiece, a lot of metal debris will be generated. Under the action of gravity, this part of the metal debris passes through the grid 31 and falls into the collection tray 32 in the empty slot 3 for collection. When a certain amount of metal debris is collected in the collection tray 32, the collection tray 32 is pulled out through the handle 33 to recycle the metal debris. The hollow conveyor belt allows metal debris to pass through. The grid 31 not only allows the metal debris to pass through, but also supports the conveyor belt 114. A bracket 116 is installed on each of the front and rear sides of the support block 115, and the rear plate 16 and the bracket 116 are both installed on the bottom plate 117. The above-mentioned parts cooperate with each other to improve the overall stability of the sanding machine.

[0049] The fastening device 4 is used to press down the workpiece on the conveyor belt 114 to maintain the stability of the workpiece during grinding and prevent it from running off the track. This is a technical content well known to those skilled in the art and will not be described in detail here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sanding machine with a sanding belt anti-deviation function, characterized in that: The invention comprises a machine body and an anti-deviation device, wherein the machine body comprises a workpiece conveying device (11), a contact wheel (12), a tensioning wheel (13) and a top plate (14) which are arranged in sequence from bottom to top, a front plate (15) and a rear plate (16) are respectively arranged on the front and rear sides of the top plate (14), an output end of a motor (17) passes through the rear plate (16) and is connected to the contact wheel (12), the contact wheel (12) and the tensioning wheel (13) are rotationally connected via an abrasive belt (10), slots (18) are symmetrically provided on the front plate (15) and the rear plate (16), an auxiliary shaft (19) which is coaxially arranged with the tensioning wheel (13) and rotationally connected is placed in the slot (18); The anti-deviation device comprises two limit plates (21) located on both sides of the tensioning wheel (13) and fixedly connected to the auxiliary shaft (19), and each of the limit plates (21) is provided with a laser sensor (22); the anti-deviation device also comprises two lifting mechanisms (23) arranged on the front plate (15) and the rear plate (16), and the lifting mechanism (23) comprises a circular ring (24) sleeved with the auxiliary shaft (19), and a telescopic rod (25) is connected below the circular ring (24), and the telescopic rod (25) is connected to the cylinder (26); The laser sensor (22) and the cylinder (26) are both electrically connected to a controller (27).

2. The sanding machine with the sanding belt anti-deviation function according to claim 1, characterized in that: The top plate (14) is hinged to the front plate (15), and the height of the front plate (15) is 1 / 5-1 / 4 of the height of the rear plate (16).

3. The sanding machine with the sanding belt anti-deviation function according to claim 1, characterized in that: Connecting blocks (131) are symmetrically arranged on both sides of the tension wheel (13); the connecting blocks (131) are interference fit with the inner ring of the bearing (132); and the auxiliary shaft (19) is interference fit with the outer ring of the bearing (132).

4. The sanding machine with the sanding belt anti-deviation function according to claim 1, characterized in that: The top and bottom of the slot (18) are both provided with contact sensors, and the contact sensors are electrically connected to the controller (27).

5. The sanding machine with the sanding belt anti-deviation function according to claim 1, characterized in that: The workpiece conveying device (11) comprises a driving shaft (111) and a driven shaft (112), wherein the driving shaft is connected to a driver (113), and the driving shaft (111) and the driven shaft (112) are rotatably connected via a conveyor belt (114); A support block (115) is installed between the upper and lower layers of the conveyor belts (114), and a bracket (116) is installed on each of the front and rear sides of the support block (115). The rear plate (16) and the bracket (116) are both installed on a bottom plate (117).

6. The sanding machine with the sanding belt anti-deviation function according to claim 5, characterized in that: The middle part of the support block (115) is concave to form a hollow groove (3), a grid (31) flush with the upper surface of the support block (115) is installed on the hollow groove (3), a collection tray (32) is placed in the hollow groove (3), and a handle (33) is installed at the front end of the collection tray (32).

7. The sanding machine with the sanding belt anti-deviation function according to claim 6, characterized in that: The conveyor belt (114) is a hollow conveyor belt.

8. The sanding machine with the sanding belt anti-deviation function according to any one of claims 1 to 7, characterized in that: Fastening devices (4) are also symmetrically mounted on both sides of the contact wheel (12).

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