Belt type belt sander capable of automatically replacing abrasive belt

Abstract

The invention provides a belt type belt sander capable of automatically replacing an abrasive belt, which belongs to the technical field of belt sanders, and comprises a machine body, a driving wheel rotationally connected to the machine body, a driving piece arranged on the machine body and used for driving the driving wheel to rotate, and a driven wheel rotationally connected to the machine body and located under the driving wheel. The diameter of the driven wheel is the same as that of the driving wheel, a grinding belt is wound between the driving wheel and the driven wheel, an adjusting mechanism used for adjusting the distance between the driven wheel and the driving wheel is arranged on the machine body, and an adjusting component used for adjusting the tightness of the grinding belt is arranged on the machine body. And a manipulator which is used for conveniently taking down the to-be-replaced grinding belt and carrying a new grinding belt to the driving wheel is arranged on the machine body. The grinding belt replacing device has the advantage that an operator can conveniently replace the grinding belt.

Description

Technical Field

[0001] The present invention relates to the technical field of abrasive belt machines, and in particular to a belt-type abrasive belt machine with automatic abrasive belt changing. Background Art

[0002] The belt sander includes a sanding belt, a motor and a frame, as well as a pulley or a belt roller; the sanding belt is tensioned, and the motor drives one of the pulleys or belt rollers to move, driving the sanding belt to move, causing the sanding belt to rub against the workpiece, thereby completing the grinding of the workpiece surface. The belt sander has been widely used in hardware, plumbing, furniture and other industries.

[0003] For example, the Chinese invention patent with application number CN202310807028.5 discloses a belt sander, which belongs to the technical field of belt sanders and aims to overcome the defect that the existing belt sanders are inconvenient to grind workpieces with long strip structures and inner corners. The belt sander includes a frame, on which a first pulley, a second pulley, a third pulley, a fourth pulley and a sanding belt are provided; in the horizontal direction, the third pulley is located between the first pulley and the second pulley; the position of the third pulley is lower than the first pulley and the second pulley; the fourth pulley is lower than the second pulley, and in the horizontal direction, the second pulley and the fourth pulley are located on the same side of the third pulley. The sanding belt of the belt sander has a first winding method, and the sanding belt passes through the first pulley, the second pulley, the third pulley and the fourth pulley in sequence.

[0004] When the sanding belt cannot normally grind and polish the workpiece during use, the operator of the sanding belt machine needs to replace the sanding belt. The existing sanding belt machine requires the operator to manually replace the sanding belt, which is troublesome to operate and the steps are complicated. Summary of the invention

[0005] In order to overcome the deficiencies in the background technology, the purpose of the present application is to provide a belt sanding machine with automatic sanding belt replacement, which is convenient for the operator to replace the sanding belt.

[0006] In order to achieve the above objectives, this application provides the following technical solutions: A belt sanding machine with automatic sanding belt replacement comprises a machine body, a driving wheel rotatably connected to the machine body, a driving member for driving the driving wheel to rotate is provided on the machine body, a driven wheel rotatably connected to the machine body, the driven wheel is located directly below the driving wheel, the diameter of the driven wheel is the same as the diameter of the driving wheel, a sanding belt is wound between the driving wheel and the driven wheel, an adjusting mechanism for adjusting the distance between the driven wheel and the driving wheel is provided on the machine body, an adjusting component for adjusting the tightness of the sanding belt is provided on the machine body, and a manipulator for conveniently removing the sanding belt to be replaced and moving the new sanding belt to the driving wheel is provided on the machine body.

[0007] As a preferred solution, the adjustment mechanism includes a slide rail fixedly connected to the body, a slider slidably connected to the slide rail, and a driving cylinder fixedly connected to the body for driving the slider to slide on the slide rail, and the telescopic end of the driving cylinder is fixedly connected to the slider.

[0008] As a preferred solution, the adjusting component includes a rotating shaft fixedly connected to the machine body, a first rod rotatably connected to the rotating shaft at one end, an adjusting wheel rotatably connected to the end of the first rod away from the rotating shaft, and a linkage member arranged between the first rod and the slider for driving the first rod to rotate through the sliding of the slider so as to press the adjusting wheel against the inner wall of the grinding belt. The rotating shaft is located between the driven wheel and the driving wheel, and the axis of the rotating shaft is located on the line connecting the axis of the driven wheel and the axis of the driving wheel. The diameter of the adjusting wheel is smaller than the diameter of the driving wheel.

[0009] As a preferred solution, the linkage member includes a ring sleeved on the outer wall of the rotating shaft, a second rod fixedly connected to the outer wall of the ring, a first torsion spring sleeved on the outer wall of the rotating shaft, and a linkage rod whose two ends are rotatably connected to one end of the second rod and the slider, one end of the first rod is fixedly connected to the outer wall of the ring, the first rod and the second rod are vertically arranged, the two ends of the first torsion spring are fixedly connected to the outer wall of the rotating shaft and the outer wall of the ring, and under the action of the restoring force of the first torsion spring, the end of the first rod away from the ring is arranged downward.

[0010] As a preferred solution, a buffer rod is fixedly connected to the outer wall of the body through a buffer seat, the buffer rod is vertically arranged, and the cross-section of the buffer rod is circular. A buffer block is slidably connected to the outer wall of the buffer rod, and the rotating shaft is fixedly connected to the buffer block. Two buffer springs are sleeved on the outer wall of the buffer rod, and the two buffer springs are respectively located on both sides of the buffer block, and the two buffer springs are respectively abutted against the buffer seat and the buffer block.

[0011] As a preferred solution, two support blocks are slidably connected to the outer wall of the buffer rod, and the two support blocks are respectively located on both sides of the buffer block. A support rod is fixedly connected to the support block, and the other end of the support rod is fixedly connected to the outer wall of the rotating shaft. The end of the buffer spring away from the buffer seat abuts against the support block.

[0012] As a preferred solution, an annular groove is provided on the outer wall of the driving wheel, the cross section of the annular groove is rectangular, a guide surface is provided on the outer side of the inner wall of the annular groove, and the structure of the driving wheel is the same as that of the driven wheel.

[0013] As a preferred solution, a mounting hole is provided on an end surface of one end of the first rod, a clamping spring is fixedly connected to the bottom of the mounting hole, a mounting rod is slidably connected to the inner wall of the mounting hole, a clamping hole is provided on an end surface of the mounting rod close to the mounting hole, an end of the clamping spring away from the bottom of the mounting hole abuts against the bottom of the clamping hole, a U-shaped frame is fixedly connected to an end surface of the mounting rod away from the clamping spring, an opening of the U-shaped frame is arranged toward a side away from the mounting rod, and the adjusting wheel is rotatably connected to the inner walls on both sides of the U-shaped frame.

[0014] As a preferred scheme, two brackets are fixedly connected to the body, and the two brackets are respectively located on both sides of the slide rail. A limit rod is installed on the bracket, and a limit wheel is eccentrically connected to the outer wall of the limit rod. A second torsion spring is sleeved on the outer wall of the limit rod, and both ends of the second torsion spring are respectively fixedly connected to the outer wall of the limit rod and the outer wall of the limit wheel. Under the action of the restoring force of the second torsion spring, the side wall of the limit wheel abuts against the side wall of the slider, and the center of the limit wheel is located between the two limit rods and on the side of the two limit rods close to the driving cylinder. A limit cylinder is fixedly connected to the bracket, and the telescopic end of the limit cylinder is arranged toward the body. One end of the limit rod is coaxially fixedly connected to the telescopic end of the limit cylinder. A long groove is provided on the side walls on both sides of the slider, and both ends of the long groove are connected to the outside world.

[0015] Compared with the prior art, this application has the following advantages: 1. In the present application, when the sanding belt needs to be replaced, the operator loosens the sanding belt through the adjusting mechanism, then removes the sanding belt that needs to be replaced through the manipulator, then clamps the new sanding belt to the driving wheel and the driven wheel through the manipulator, and then tightens the sanding belt through the adjusting mechanism. Such a setting has a simple structure and is easy to operate, which facilitates the operator to replace the sanding belt.

[0016] 2. In the present application, the slider drives the ring to rotate, the ring drives the first rod to rotate, and the first rod drives the adjusting wheel to press against the inner wall of the grinding belt. Through such an arrangement, the structure is simple and the operation is convenient. The tightness of the grinding belt is controlled by a power source, which makes it convenient for the operator to replace the grinding belt and adjust the tightness of the grinding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the structure of the adjustment mechanism and the adjustment component in the embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the structure of the driving wheel in the embodiment of the present application.

[0020] Figure 4It is a cross-sectional view of the first rod in the embodiment of the present application.

[0021] In the figure, 1, machine body; 2, driving wheel; 3, driven wheel; 4, grinding belt; 5, adjusting mechanism; 6, adjusting component; 7, manipulator; 8, slide rail; 9, slider; 10, driving cylinder; 11, rotating shaft; 12, first rod; 13, adjusting wheel; 14, linkage member; 15, sleeve ring; 16, second rod; 17, first torsion spring; 18, linkage rod; 19, buffer rod; 20, buffer block; 21, buffer spring; 22, support block; 23, support rod; 24, annular groove; 25, guide surface; 26, mounting hole; 27, tightening spring; 28, mounting rod; 29, tightening hole; 30, U-shaped frame; 31, bracket; 32, limit rod; 33, limit wheel; 34, second torsion spring; 35, limit cylinder; 36, long groove; 37, waist groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a belt sanding machine with automatic belt changing includes a body 1, a driving wheel 2 is rotatably connected to the body 1, a driving member for driving the driving wheel 2 to rotate is provided on the body 1, the driving member is set as a servo motor, the servo motor is fixedly connected to the body 1, a driven wheel 3 is rotatably connected to the body 1, the driven wheel 3 is located directly below the driving wheel 2, the diameter of the driving wheel 2 is the same as the diameter of the driven wheel 3, a grinding belt 4 is wound between the driving wheel 2 and the driven wheel 3, an annular groove 24 is provided on the outer wall of the driving wheel 2 and the outer wall of the driven wheel 3, the cross section of the annular groove 24 is rectangular, and a guide surface 25 is provided on the outer side of the inner wall on both sides of the annular groove 24.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an adjusting mechanism 5 for adjusting the distance between the driven wheel 3 and the driving wheel 2 is provided on the machine body 1, and the adjusting mechanism 5 includes a slide rail 8, which is fixedly connected to the machine body 1, and the slide rail 8 is vertically arranged. A slider 9 is slidably connected to the slide rail 8, and the driven wheel 3 is rotatably connected to the slider 9. A driving cylinder 10 is fixedly connected to the machine body 1, and the telescopic end of the driving cylinder 10 is fixedly connected to the slider 9.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in order to improve the service life of the driving cylinder 10, two brackets 31 are fixedly connected to the body 1, and the two brackets 31 are respectively located on both sides of the slide rail 8. A limit rod 32 is slidably connected to the bracket 31, and the limit rod 32 is horizontally arranged. A limit wheel 33 is eccentrically connected to the outer wall of the limit rod 32. A second torsion spring 34 is sleeved on the outer wall of the limit rod 32. The two ends of the second torsion spring 34 are respectively fixedly connected to the outer wall of the limit rod 32 and the outer wall of the limit wheel 33. The limit wheel 33 is The second torsion spring 34 abuts against the side wall of the slider 9 under the action of the restoring force. The center of the two limiting wheels 33 is located between the two limiting rods 32 and on the side of the limiting rod 32 close to the driving cylinder 10. A limiting cylinder 35 is fixedly connected to the bracket 31. One end of the limiting rod 32 is coaxially fixedly connected to the telescopic end face of the limiting cylinder 35. A long groove 36 is opened on the side wall of the slider 9. The two ends of the long groove 36 are connected to the two end faces of the slider 9. The width of the slider 9 is greater than the thickness of the limiting wheel 33.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an adjusting component 6 for adjusting the tightness of the grinding belt 4 is provided on the machine body 1, and the adjusting component 6 includes a rotating shaft 11, which is installed on the outer wall of the machine body 1, and the rotating shaft 11 is located between the driven wheel 3 and the driving wheel 2, and the axis of the rotating shaft 11 is located on the line connecting the axis of the driven wheel 3 and the axis of the driving wheel 2. A first rod 12 is rotatably connected to the rotating shaft 11, and an adjusting wheel 13 is rotatably connected to the outer wall of the first rod 12 away from the rotating shaft 11. The diameter of the adjusting wheel 13 is smaller than the diameter of the driving wheel 2. A linkage member 14 for driving the first rod 12 to rotate through the slider 9 is provided between the first rod 12 and the slider 9, and the first rod 12 rotates to drive the adjusting wheel 13 to press against the inner wall of the grinding belt 4, and the linkage member 14 includes a collar 15. The collar 15 is sleeved on the outer wall of the rotating shaft 11, one end of the first rod 12 is fixedly connected to the outer wall of the collar 15, and the second rod 16 is fixedly connected to the outer wall of the collar 15. A waist-shaped groove 37 is opened on one end of the second rod 16. The first rod 12 and the second rod 16 are vertically arranged on the outer wall of the rotating shaft 11 and a first torsion spring 17 is sleeved. The two ends of the first torsion spring 17 are respectively fixedly connected to the outer wall of the rotating shaft 11 and the outer wall of the collar 15. Under the action of the restoring force of the first torsion spring 17, the end of the first rod 12 away from the collar 15 is always arranged vertically downward. A linkage rod 18 is connected between one end of the second rod 16 and the slider 9. One end of the linkage rod 18 is rotatably connected to the slider 9, and the other end of the linkage rod 18 is slidably connected in the waist-shaped groove 37.

[0027] like Figure 1, Figure 2 , Figure 3 , Figure 4 As shown, a buffer rod 19 is fixedly connected to the outer wall of the body 1 through a buffer seat, the buffer rod 19 is vertically arranged and has a circular cross-section, a buffer block 20 is slidably connected to the outer wall of the buffer rod 19, the rotating shaft 11 is fixedly connected to the buffer block 20, two support blocks 22 are slidably connected to the outer wall of the buffer rod 19, the two support blocks 22 are respectively located on both sides of the buffer block 20, two buffer springs 21 are sleeved on the outer wall of the buffer rod 19, the two ends of the buffer spring 21 are respectively abutted against the buffer seat and the support block 22, a support rod 23 is fixedly connected to the outer wall of the support rod 23, and the other end of the support rod 23 is fixedly connected to the outer wall of the rotating shaft 11.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a mounting hole 26 is provided on the end surface of the first rod 12 away from the rotating shaft 11, a mounting rod 28 is slidably connected in the mounting hole 26, a clamping spring 27 is provided in the mounting hole 26, two ends of the clamping spring 27 are respectively fixedly connected to the bottom of the mounting hole 26 and the end surface of one end of the mounting rod 28, a U-shaped frame 30 is fixedly connected to the end surface of one end of the mounting rod 28, the opening of the U-shaped frame 30 is arranged toward the side away from the mounting rod 28, and the adjusting wheel 13 is rotatably connected between the inner walls on both sides of the U-shaped frame 30.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a robot 7 is provided on the machine body 1 , and the robot 7 is configured as a 4-axis robot 7 . The 4-axis robot 7 clamps a new sanding belt onto the machine body 1 , and removes the sanding belt to be replaced from the driving wheel 2 .

[0030] The working principle of the embodiment of the present application is as follows: when the operator needs to replace the grinding belt 4, the driving cylinder 10 drives the slider 9 to move, the driven wheel 3 detaches from the grinding belt 4, the manipulator 7 removes the grinding belt 4 on the driving wheel 2, and clamps the new grinding belt 4 onto the driving wheel 2. The driving cylinder 10 drives the slider 9 to move downward, and the slider 9 drives the driven wheel 3 to move downward. While the slider 9 moves downward, it drives the ring 15 to rotate through the second rod 16, and the ring 15 drives the first rod 12 to rotate, and the first rod 12 drives the adjusting wheel 13 to press against the inner wall of the grinding belt 4.

[0031] When the operator is grinding with the grinding belt 4 , the buffer block 20 slides on the buffer rod 19 , and under the action of the restoring force of the buffer spring 21 , the adjusting wheel 13 always presses against the inner wall of the grinding belt 4 .

[0032] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0033] The above is a detailed introduction to the one provided by the present application. Specific examples are used herein to illustrate the principle and implementation method of the present application, and the description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A belt sanding machine with automatic belt changing, characterized in that: The invention comprises a machine body (1), a driving wheel (2) rotatably connected to the machine body (1), a driving member for driving the driving wheel (2) to rotate is provided on the machine body (1), a driven wheel (3) rotatably connected to the machine body (1), the driven wheel (3) is located directly below the driving wheel (2), the diameter of the driven wheel (3) is the same as the diameter of the driving wheel (2), a grinding belt (4) is wound between the driving wheel (2) and the driven wheel (3), an adjusting mechanism (5) for adjusting the distance between the driven wheel (3) and the driving wheel (2) is provided on the machine body (1), an adjusting component (6) for adjusting the tightness of the grinding belt (4) is provided on the machine body (1), and a manipulator (7) for conveniently removing the grinding belt (4) to be replaced and moving the new grinding belt (4) to the driving wheel (2) is provided on the machine body (1).

2. A belt sanding machine with automatic belt changing according to claim 1, characterized in that: The adjustment mechanism (5) comprises a slide rail (8) fixedly connected to the machine body (1), a slider (9) slidably connected to the slide rail (8), and a driving cylinder (10) fixedly connected to the machine body (1) and used for driving the slider (9) to slide on the slide rail (8); the telescopic end of the driving cylinder (10) is fixedly connected to the slider (9).

3. A belt sanding machine with automatic belt changing according to claim 2, characterized in that: The adjusting component (6) comprises a rotating shaft (11) mounted on the machine body (1), a first rod (12) with one end rotatably connected to the rotating shaft (11), an adjusting wheel (13) rotatably connected to the end of the first rod (12) away from the rotating shaft (11), and a linkage member (14) arranged between the first rod (12) and the slider (9) for driving the first rod (12) to rotate by sliding the slider (9) so as to press the adjusting wheel (13) against the inner wall of the grinding belt (4), the rotating shaft (11) being located between the driven wheel (3) and the driving wheel (2), and the axis of the rotating shaft (11) being located on the line connecting the axis of the driven wheel (3) and the axis of the driving wheel (2), and the diameter of the adjusting wheel (13) being smaller than the diameter of the driving wheel (2).

4. The belt sander with automatic belt changing according to claim 3, characterized in that: The linkage member (14) comprises a collar (15) sleeved on the outer wall of the rotating shaft (11), a second rod (16) fixedly connected to the outer wall of the collar (15), a first torsion spring (17) sleeved on the outer wall of the rotating shaft (11), a waist-shaped groove (37) provided on one end of the second rod (16), and a linkage rod (18) having one end rotatably connected to the slider (9) and the other end slidably connected to the waist-shaped groove (37); one end of the first rod (12) is fixedly connected to the outer wall of the collar (15); the first rod (12) and the second rod (16) are arranged vertically; two ends of the first torsion spring (17) are respectively fixedly connected to the outer wall of the rotating shaft (11) and the outer wall of the collar (15); under the action of the restoring force of the first torsion spring (17), the end of the first rod (12) away from the collar (15) is arranged downward.

5. The belt sander with automatic belt changing according to claim 4, characterized in that: A buffer rod (19) is fixedly connected to the outer wall of the body (1) via a buffer seat, the buffer rod (19) is vertically arranged, and the cross section of the buffer rod (19) is circular. A buffer block (20) is slidably connected to the outer wall of the buffer rod (19), the rotating shaft (11) is fixedly connected to the buffer block (20), and two buffer springs (21) are sleeved on the outer wall of the buffer rod (19), the two buffer springs (21) are respectively located on both sides of the buffer block (20), and the two buffer springs (21) are respectively abutted against the buffer seat and the buffer block (20).

6. A belt sanding machine with automatic belt changing according to claim 5, characterized in that: Two support blocks (22) are slidably connected to the outer wall of the buffer rod (19), and the two support blocks (22) are respectively located on both sides of the buffer block (20). A support rod (23) is fixedly connected to the support block (22), and the other end of the support rod (23) is fixedly connected to the outer wall of the rotating shaft (11), and one end of the buffer spring (21) away from the buffer seat abuts against the support block (22).

7. A belt sanding machine with automatic belt changing according to claim 6, characterized in that: An annular groove (24) is provided on the outer wall of the driving wheel (2), the cross section of the annular groove (24) is rectangular, and a guide surface (25) is provided on the outer side of the inner wall of the annular groove (24). The structure of the driving wheel (2) is the same as that of the driven wheel (3).

8. The belt sander with automatic belt changing according to claim 7, characterized in that: A mounting hole (26) is provided on an end surface of one end of the first rod (12); a clamping spring (27) is fixedly connected to the bottom of the mounting hole (26); a mounting rod (28) is slidably connected to the inner wall of the mounting hole (26); a clamping hole (29) is provided on an end surface of the mounting rod (28) close to the mounting hole (26); an end of the clamping spring (27) away from the bottom of the mounting hole (26) is abutted against the bottom of the clamping hole (29); a U-shaped frame (30) is fixedly connected to an end surface of the mounting rod (28) away from the clamping spring (27); an opening of the U-shaped frame (30) is arranged toward a side away from the mounting rod (28); and the adjusting wheel (13) is rotatably connected to the inner walls on both sides of the U-shaped frame (30).

9. The belt sander with automatic belt changing according to claim 1, characterized in that: Two brackets (31) are fixedly connected to the machine body (1), and the two brackets (31) are respectively located on both sides of the slide rail (8). A limiting rod (32) is installed on the bracket (31), and a limiting wheel (33) is eccentrically rotatably connected to the outer wall of the limiting rod (32). A second torsion spring (34) is sleeved on the outer wall of the limiting rod (32), and the two ends of the second torsion spring (34) are respectively fixedly connected to the outer wall of the limiting rod (32) and the outer wall of the limiting wheel (33). Under the action of the restoring force of the second torsion spring (34), the side of the limiting wheel (33) is rotated. The wall abuts against the side wall of the slider (9), the center of the limiting wheel (33) is located between the two limiting rods (32) and on the side of the two limiting rods (32) close to the driving cylinder (10), a limiting cylinder (35) is fixedly connected to the bracket (31), the telescopic end of the limiting cylinder (35) is arranged toward the machine body (1), one end of the limiting rod (32) is coaxially fixedly connected with the telescopic end of the limiting cylinder (35), and a long groove (36) is provided on both side walls of the slider (9), and both ends of the long groove (36) are connected to the outside.

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