Automatic sanding belt changing device for grinding

Abstract

The utility model relates to the technical field of grinding processing equipment, and in particular to an automatic sand belt changing device for grinding; it comprises a sand changing mechanism, a rotating mechanism and a rotating frame installed on the rotating mechanism, wherein a plurality of sand changing mechanisms are provided and are all installed on the rotating frame, the rotating mechanism comprises a rotating seat, a rotating shaft installed in the middle of the rotating seat, and a driving motor linked with the lower end of the rotating shaft, and the lower end of the middle of the rotating frame is fixedly connected with the upper end of the rotating shaft; after the utility model improves the prior art, a plurality of sand belts can be placed at the same time by installing a plurality of sand changing mechanisms on the rotating frame, thereby reducing the frequency of manual operation, thereby improving the working efficiency of the operator, and the operator places the sand belt away from the side of the sand belt machine, and the safety factor is high.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding processing equipment, in particular to an automatic sanding belt changing device for grinding. Background Art

[0002] In recent years, with the continuous development of the manufacturing industry, traditional manual grinding operations have gradually been replaced by industrial robots. In robot grinding operations, sanding belt machines are often used for grinding operations. In robot grinding workstations, sanding belt machines usually exist in two forms: fixed and robot handheld. In robot handheld sanding belt machine grinding operations, the sanding belt needs to be replaced according to different processes and parts. There are two existing methods for replacing sanding belts: manually replacing, but this method requires the workstation operation to be suspended for replacement, which reduces work efficiency and is dangerous to operators; changing sanding belts with automatic sanding belt changers, but the existing automatic sanding belt changers have complex structures, require additional electrical design, and are costly.

[0003] In view of this, a Chinese patent document with the authorization number CN219131840U discloses an automatic belt changing device based on a belt machine of a robot grinding workstation, comprising a lower fixed plate and an upper fixed plate connected to the upper side of the lower fixed plate, a plurality of belt limiting rods are arranged on the upper surface of the upper fixed plate, and a plurality of belt limiting rods support a belt on the side surface; a plurality of contact blocks are arranged on the inner side of the belt, the contact block is arranged on the upper side of the upper fixed plate and corresponds to the position of the grinding wheel of the belt machine, a fixed rod is arranged between the lower fixed plate and the upper fixed plate, and a buffer spring is arranged on the fixed rod sleeve; when the belt machine descends and the grinding wheel of the belt machine contacts the contact block, the upper fixed plate presses the buffer spring downward to make the grinding wheel of the belt machine contact with the belt and tighten the belt; when the grinding wheel of the belt machine is separated from the contact block, the upper fixed plate returns to its original position, realizing the function of automatic belt changing of the robot; however, the above-mentioned automatic belt changing device can only place one belt at a time, so that the frequency of manual placement of the belt is high, which will inevitably lead to low work efficiency of the operator, and it is not safe for the operator to place the belt close to one side of the robot.

[0004] Therefore, it is necessary to improve the deficiencies in the above prior art. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an automatic sanding belt changing device for grinding in view of the deficiencies of the above-mentioned prior art, so as to solve the problem in the prior art that the frequency of manual placement of the sanding belt is high, resulting in low work efficiency of the operator and personal safety when placing the sanding belt.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an automatic sand belt changing device for grinding, comprising a sand changing mechanism, a rotating mechanism and a rotating frame installed on the rotating mechanism, wherein the sand changing mechanisms are provided in plurality and are all installed on the rotating frame.

[0007] By adopting the above technical scheme, before or during grinding, the operator can place the sanding belt on the side of the rotating frame away from the sanding machine. Since several sand changing mechanisms are installed on the rotating frame, the rotating frame can be driven by the rotating mechanism to rotate and adjust the sand changing mechanism to face the staff, so that the sanding belt can be placed on the sand changing mechanisms at different positions; similarly, during the rotation of the rotating frame, the sand changing mechanisms at different positions can be driven to the position facing the sanding machine, and after the sanding belt is worn out by grinding, the sanding belt machine discards the old sanding belt, and then the sanding belt machine cooperates with the sand changing mechanism to complete the sand changing operation; therefore, multiple sanding belts can be placed at the same time, reducing the frequency of manual operation, thereby improving the work efficiency of the operator. In addition, since the operator can place the sanding belt on the side away from the sanding machine, it is relatively safe for the operator to change materials.

[0008] The above technical solution is further configured as follows: the sand changing mechanism includes a sand hanging frame and a sand hanging plate fixedly installed on a rotating frame, the outer periphery of the sand hanging frame is provided with a sand belt, the sand hanging frame is provided with a plurality of limit columns in the circumferential direction, the sand hanging plate is provided with limit holes that match the clearance with the limit columns, the outer side of the limit columns is provided with a return spring with one end abutting against the sand hanging plate and the other end abutting against the sand hanging frame, the side of the sand hanging frame is provided with a plurality of sand stripping grooves, and the sand hanging plate is provided with a sand stripping push plate extending toward the sand stripping grooves.

[0009] By adopting the above technical scheme, when the operation of changing the sand belt starts, the sand belt machine approaches until the grinding wheel of the sand belt machine abuts against the sand hanging frame and squeezes it, the sand hanging frame approaches the squeezing reset spring to shrink it, and the limit column passes through the limit hole and moves relative to the sand hanging plate, so that the sand hanging frame is close to the sand hanging plate. At the same time, the sand belt sleeved on the outer periphery of the sand hanging frame approaches the sand stripping push plate until it abuts, and the sand stripping push plate pushes the sand belt to the side close to the sand belt machine, and slowly transfers it to the grinding wheel of the sand belt machine until the sand belt is completely separated from the sand hanging frame and sleeved on the grinding wheel of the sand belt machine, and then the sand belt machine tensions the sand belt and drives the sand belt away from the sand hanging frame, and the sand hanging frame is reset under the action of the reset spring, thus completing the operation of changing the sand belt.

[0010] The above technical solution is further configured as follows: an internal threaded hole is provided at one end of the limit column close to the sand hanging frame, and a fastening hole matching the position of the internal threaded hole is penetrated on the sand hanging frame, a limiting bolt is connected with the clearance in the fastening hole, and the limiting bolt is threadedly connected to the internal threaded hole, and an anti-detachment clamping ring is detachably connected to the end of the limit column away from the sand hanging frame after passing through the limiting hole, and an anti-detachment clamping column fixedly installed on the sand hanging plate is sleeved between the anti-detachment clamping ring and the limiting hole.

[0011] By adopting the above technical solution, one end of the limit column is detachably connected to the sand hanging frame by bolts, which is convenient for disassembly and maintenance; the other end cooperates with the anti-detachment clamping ring and the anti-detachment clamping column to limit the movable distance of the sand hanging frame and prevent the limit column from falling off from the limit hole; the anti-detachment clamping ring is detachably connected to the sand hanging frame, which is also convenient for disassembly and maintenance.

[0012] The above technical solution is further configured as follows: an anti-wear washer is sleeved on the limit column between the reset spring and the limit hole.

[0013] By adopting the above technical solution, by sleeve-arranging an anti-wear washer between the reset spring and the limit hole of the limit column, it is possible to avoid wear and abnormal noise between the reset spring and the sand hanging plate during the extrusion process.

[0014] The above technical solution is further configured as follows: the rotating mechanism includes a rotating seat, a rotating shaft installed in the middle of the rotating seat, and a driving motor linked to the lower end of the rotating shaft, and the lower end of the middle of the rotating frame is fixedly connected to the upper end of the rotating shaft.

[0015] By adopting the above technical solution, when it is necessary to switch the relative positions of different sanding belt mechanisms and the robot, the driving motor is started to drive the rotating shaft to rotate, the rotating shaft drives the rotating frame to rotate, and the rotating frame drives the sanding belt mechanism thereon to rotate, thereby completing the position change of the sanding belt mechanism, thereby realizing the manual placement of the sanding belt on both sides of the rotating frame and the sanding belt machine on the robot arm to exchange the sanding belt cycle alternately; the opening and closing of the driving motor can be uniformly controlled by the PLC, and can also be manually controlled by pressing buttons.

[0016] The above technical solution is further configured as follows: the sand changing mechanisms are evenly distributed in two upper and lower rows on the rotating frame.

[0017] By adopting the above technical solution, the sand changing mechanism is arranged in two rows, so that more sand changing mechanisms can be installed, which can further reduce the frequency of manual operation.

[0018] The above technical solution is further configured as follows: the rotating frame is in the shape of a polygonal prism, and the sand changing mechanism is installed in the middle of each prism side of the rotating frame.

[0019] With the above technical solution, the rotating frame adopts a multi-prism shape, and the plane structure of the prism side makes the sand changing mechanism relatively easier to install and saves space; the rotating frame rotates the angle corresponding to one prism side each time, ensuring that one prism side is rotated to correspond to the robot each time;

[0020] The above technical solution is further configured as follows: an isolation baffle is radially installed at each corner of the rotating frame to separate the side surfaces of each prism.

[0021] By adopting the above technical solution, through the setting of the isolation baffle, not only the rotating frame can be reinforced, but also a certain dust isolation effect can be played, and it can also be cooperated with the dust cover of the robot grinding workstation, so that the dust prevention effect is better.

[0022] The above technical solution is further configured as follows: a safety guardrail is provided on the side of the rotating mechanism away from the sanding machine on the robot arm.

[0023] By adopting the above technical solution, the operating area can be limited by setting a safety guardrail to avoid danger when the rotating frame rotates, thereby further improving the operating safety.

[0024] The beneficial effects achieved by the utility model are: by installing multiple sand changing mechanisms on the rotating frame, multiple sand belts can be placed at the same time, the frequency of manual operation is reduced, thereby improving the working efficiency of the operator, and the operator places the sand belt away from the side of the sanding machine, with a high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0026] Figure 2 It is a schematic diagram of the exploded structure of the rotating mechanism in the embodiment of the utility model;

[0027] Figure 3 It is a structural schematic diagram of a rotating frame in an embodiment of the utility model;

[0028] Figure 4 It is a schematic diagram of the explosion structure of the sand changing mechanism in the embodiment of the utility model;

[0029] Figure 5 yes Figure 4 Partial view at point A in the middle;

[0030] Figure 6 yes Figure 4 Partial view at point B in the middle;

[0031] Figure 7 It is a schematic diagram of the related structure of the limiting column of the sand changing mechanism in the embodiment of the utility model. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1-3As shown in the figure, an automatic sanding belt changing device for grinding includes a sanding belt machine 1 and a sanding mechanism 2 for changing the sanding belt, a rotating mechanism 3 and a rotating frame 4 installed on the rotating mechanism 3. The sanding mechanism 2 is provided with a plurality of sanding belts which are evenly installed on the outer peripheral side of the rotating frame 4. The sanding belt machine 1 can be grasped by a robot to cooperate with the sanding mechanism 2 to complete the sand changing operation.

[0034] like Figure 2 As shown in the figure, the rotating mechanism 3 includes a rotating seat 31, a rotating shaft 32 installed in the middle of the rotating seat 31, and a driving motor 33 linked to the lower end of the rotating shaft 32. The lower end of the middle part of the rotating frame 4 is fixedly connected to the upper end of the rotating shaft 32. The rotating frame 4 is in the shape of a hexagonal prism. The sand changing mechanism 2 is evenly distributed in two rows in the middle of the six prism sides of the rotating frame 4. The driving motor 33 drives the rotating frame to rotate 60 degrees each time. The opening and closing of the driving motor 33 can be uniformly controlled by PLC, and can also be manually controlled by pressing buttons.

[0035] like Figure 4-7 As shown in the figure, the sand changing mechanism 2 includes a sand hanging frame 21 whose shape and size are adapted to the sand belt machine 1 on the robot arm and a sand hanging plate 22 fixedly installed on the circumferential side of the rotating frame 4. The outer periphery of the sand hanging frame 21 is provided with a sand belt 5, and the sand hanging frame 21 is provided with a plurality of limiting columns 211 in the circumferential direction. The sand hanging plate 22 is provided with limiting holes 221 that are clearance-matched with the limiting columns 211. The outer side of the limiting column 211 is provided with a return spring 212 with one end abutting against the sand hanging plate 22 and the other end abutting against the sand hanging frame 21. A plurality of sand stripping grooves 213 are provided in the circumferential direction of the side of the sand hanging frame 21. The sand hanging plate 22 is provided with a sand stripping push plate 222 extending toward the sand stripping groove 213. The limiting column 211 An internal threaded hole 2111 is provided near one end of the sand hanging frame 21, and a fastening hole 214 matching the position of the internal threaded hole 2111 is penetrated on the sand hanging frame 21, and a limiting bolt 215 is connected with the internal threaded hole 2111 through the clearance fit in the fastening hole 214, and the limiting bolt 215 is threadedly connected with the internal threaded hole 2111, and an anti-wear washer 216 is sleeved between the reset spring 212 and the limiting hole 221 of the limiting column 211, and the limiting column 211 passes through the limiting hole 221 at one end away from the sand hanging frame 21 and is detachably connected with an anti-detachment clamping ring 217 by bolts, and an anti-detachment clamping column 218 fixedly installed on the sand hanging plate 22 is sleeved between the anti-detachment clamping ring 217 and the limiting hole 221.

[0036] The sanding belt 5 is then moved back to the original position after the sanding belt 5 is ...

[0037] like Figure 1 , 3 As shown in the figure, each corner of the rotating frame 4 is radially installed with an isolation baffle 41 that separates the side of each prism. The setting of the isolation baffle 41 can not only strengthen the rotating frame 4, but also play a certain dust isolation role, and can also cooperate with the dust cover of the robot grinding workstation to achieve a better dust prevention effect; a safety guardrail 6 is provided on the side of the rotating mechanism 3 away from the sanding machine 1 on the robot arm. By setting the safety guardrail 6, the operating area can be limited to avoid danger when the rotating frame 4 rotates, thereby further improving the operating safety.

[0038] According to the technical solution of the present application, before or during grinding, the operator can place the sanding belt 5 on the side of the rotating frame 4 away from the sanding machine 1. Since a plurality of sand changing mechanisms 2 are evenly distributed and installed at circumferential positions of the rotating frame 4, the rotating mechanism 3 drives the rotating frame 4 to rotate and adjust the sand changing mechanism 2 to face the staff, so that the sanding belt 5 can be placed on the sand changing mechanisms 2 at different positions; similarly, during the rotation of the rotating frame 4, the sand changing mechanisms 2 at different positions can be driven to face the sanding belt machine 1. After the sanding belt 5 is worn out by grinding, the sanding belt machine 1 discards the old sanding belt, and then the sanding belt machine 1 cooperates with the sand changing mechanism 2 to complete the sand changing operation; therefore, multiple sanding belts 5 can be placed at the same time at one time, reducing the frequency of manual operation, thereby improving the work efficiency of the operator. In addition, since the operator can place the sanding belt 5 on the side away from the sanding belt machine 1, it is relatively safe for the operator to change materials.

Claims

1. An automatic belt changing device for grinding, comprising a sand changing mechanism, characterized in that: The invention also includes a rotating mechanism and a rotating frame installed on the rotating mechanism, wherein the sand changing mechanism is provided with several sand hanging frames and all of them are installed on the rotating frames, the sand changing mechanism includes a sand hanging frame and a sand hanging plate fixedly installed on the rotating frame, the outer sleeve of the sand hanging frame is provided with a sand belt, the sand hanging frame is provided with several limiting columns in the circumferential direction, the sand hanging plate is provided with limiting holes that match the limiting columns with a gap, the outer sleeve of the limiting column is provided with a return spring whose one end abuts against the sand hanging plate and the other end abuts against the sand hanging frame, the side of the sand hanging frame is provided with several sand stripping grooves, and the sand hanging plate is provided with a sand stripping push plate extending toward the sand stripping grooves.

2. The automatic belt changing device for grinding according to claim 1, characterized in that: An internal threaded hole is provided at one end of the limiting column close to the sand hanging frame, and a fastening hole matching the position of the internal threaded hole is penetrated on the sand hanging frame. A limiting bolt is connected with the clearance in the fastening hole, and the limiting bolt is threadedly connected to the internal threaded hole. An end of the limiting column away from the sand hanging frame passes through the limiting hole and is detachably connected with an anti-detachment clamping ring. An anti-detachment clamping column fixedly mounted on the sand hanging plate is sleeved between the anti-detachment clamping ring and the limiting hole.

3. The automatic belt changing device for grinding according to claim 2, characterized in that: The limiting column is sleeved with an anti-wear washer between the reset spring and the limiting hole.

4. An automatic belt changing device for grinding according to any one of claims 1 to 3, characterized in that: The rotating mechanism comprises a rotating seat, a rotating shaft installed in the middle of the rotating seat, and a driving motor linked to the lower end of the rotating shaft. The lower end of the middle part of the rotating frame is fixedly connected to the upper end of the rotating shaft.

5. The automatic belt changing device for grinding according to claim 4, characterized in that: The sand changing mechanisms are evenly distributed on the rotating frame in two rows, upper and lower rows.

6. The automatic belt changing device for grinding according to claim 5, characterized in that: The rotating frame is in the shape of a polygonal column, and the sand changing mechanism is installed in the middle of each prism side of the rotating frame.

7. The automatic belt changing device for grinding according to claim 6, characterized in that: An isolation baffle is radially installed at each corner of the rotating frame to separate the side surfaces of each prism.

8. The automatic belt changing device for grinding according to claim 7, characterized in that: A safety guardrail is arranged on the side of the rotating mechanism away from the sanding machine on the robot arm.

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