A continuous polishing device for waterproof sealing strip

Abstract

The present invention provides a continuous grinding device for waterproof sealing strips, belonging to the technical field of rubber product processing equipment. The device comprises a machine base, a grinding wheel, a positioning screw, a feeding screw, a winding wheel and a discharge wheel. The grinding wheel is rotatably connected to the machine base, the grinding wheel is driven by a driving motor, the positioning screw is fixedly connected to the machine base, the axis of the positioning screw is parallel to the axis of the grinding screw, the feeding screw and the grinding wheel are connected by a reduction mechanism, the positioning screw has a spiral first guide groove adapted to the width of the waterproof sealing strip, the feeding screw has a spiral second guide groove adapted to the width of the waterproof sealing strip, the waterproof sealing strip is pulled between the discharge wheel and the winding wheel, the waterproof sealing strip is pulled out by the discharge wheel and bypasses the second guide groove and the first guide groove in turn, and the grinding wheel fits the outer wall of the waterproof sealing strip outside the first guide groove. The present invention has the advantages of being able to continuously and efficiently grind a single side of the waterproof sealing strip.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber product processing equipment and relates to a continuous polishing device for a waterproof sealing strip. Background Art

[0002] In the chemical, electric power, steel, metallurgy, water treatment and other industries, operating equipment, storage tanks, etc. largely involve the use of sealing strips, especially vulcanized rubber lining gaskets for waterproofing and anti-corrosion.

[0003] Rubber strips are usually polished manually due to their soft texture and narrow size. However, as waterproof and anti-corrosion gaskets, they require extremely high flatness of the fitting surface, which directly affects their waterproof sealing performance. Existing polishing methods have difficulties in clamping and tensioning the sealing strips. Since the sealing strips are narrow, the polishing force surface is extremely small, making the polishing efficiency very low and it is difficult to guarantee flatness. Summary of the invention

[0004] The purpose of the present invention is to provide a continuous polishing device for a waterproof sealing strip in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is how to realize continuous polishing of one side of the sealing strip.

[0005] The object of the present invention can be achieved through the following technical solutions: a continuous grinding device for a waterproof sealing strip, characterized in that it includes a machine base, a grinding wheel, a positioning screw, a feeding screw, a winding wheel and a discharge wheel, the grinding wheel is rotatably connected to the machine base, the grinding wheel is driven by a driving motor, the positioning screw is fixedly connected to the machine base, the axis of the positioning screw is parallel to the axis of the grinding screw, the feeding screw and the grinding wheel are connected by a reduction mechanism, the positioning screw has a spiral first guide groove adapted to the width of the waterproof sealing strip, the feeding screw has a spiral second guide groove adapted to the width of the waterproof sealing strip, the waterproof sealing strip is pulled between the discharge wheel and the winding wheel, and the waterproof sealing strip is pulled out by the discharge wheel and bypasses the second guide groove and the first guide groove in sequence, and the grinding wheel fits the outer wall of the waterproof sealing strip outside the first guide groove.

[0006] Furthermore, the grinding wheel is provided with a coarse grinding section, a fine grinding section and a polishing section in sequence along the running direction of the waterproof sealing strip on the first guide groove.

[0007] Furthermore, the reduction mechanism includes a first gear connected to the grinding wheel, a second gear rotatably connected to the machine base, a third gear rotatably connected to the machine base, and a fourth gear connected to the discharge screw, the second gear simultaneously meshes with the first gear and the third gear, and the fourth gear meshes with the third gear.

[0008] Furthermore, a dust cover is fixedly provided on the machine base, the dust cover partially wraps the grinding wheel, the dust cover is connected to a dust suction pipe, and the dust suction pipe is connected to an exhaust fan.

[0009] Furthermore, the reel is connected to a reel motor which drives the waterproof sealing strip between the positioning screw and the reel to be in a tensioned state.

[0010] An overrunning clutch is arranged between the reel and the reel motor, so that the reel can tension the waterproof sealing strip and can reel the waterproof sealing strip when the waterproof sealing strip is in a relaxed state.

[0011] Furthermore, the positioning screw is made of metal material, and the discharge screw is made of hard plastic material.

[0012] Furthermore, the positioning screw is provided with a lubrication structure for lubricating the first guide groove, the lubrication structure includes a liquid hole opened at the axis of the positioning screw, and the positioning screw is provided with a plurality of overflow channels perpendicular to the liquid hole, the inner end of the overflow channel is connected to the liquid hole, and the outer end of the overflow channel passes through the bottom wall of the first guide groove; one end of the liquid hole is sealed, and the other end of the liquid hole is connected to a liquid storage tank storing lubricating oil.

[0013] When the waterproof sealing strip moves in the first guide groove, the lubricating oil overflowing from the overflow channel is smeared in the entire first guide groove to ensure uniform lubrication.

[0014] A continuous grinding method for a waterproof sealing strip comprises the following steps: pulling out the waterproof sealing strip from the end portion wound on a discharge wheel, winding the strip along a second guide groove on a discharge screw for several turns, and then passing the strip through one end of a positioning screw into a first guide groove, and then pulling the strip from the other end of the first guide groove to a reeling wheel, the grinding wheel abutting against the waterproof sealing strip in the middle section of the first guide groove, starting a driving motor, a reeling motor and an exhaust fan, the discharge screw and the grinding wheel rotating synchronously, the positioning screw not moving, the waterproof sealing strip sliding at a uniform speed relative to the positioning screw in the first guide groove, so that all parts of the waterproof sealing strip wound on the discharge wheel are coarsely ground, finely ground and polished in turn, and the flying dust and waste residue generated by grinding are collected.

[0015] Compared with the existing technology, this solution has the following advantages:

[0016] 1. Since the waterproof sealing strip is wound around the positioning screw, the grinding wheel can contact the waterproof sealing strip wound around the positioning screw in the entire area, which greatly increases the grinding efficiency of the waterproof sealing strip.

[0017] 2. The waterproof sealing strip is tilted on the positioning screw so that when the grinding wheel contacts it, there is an inclination between the length direction of the waterproof sealing strip and the axis of the grinding wheel, which prevents the grinding wheel from grinding along the straight direction of the waterproof sealing strip. Because the waterproof sealing strip contains fibers parallel to the length direction of the waterproof sealing strip, and the strength of rubber and fiber is different, if grinding along the straight direction will cause deeper scratches on the grinding surface. If the flatness of the waterproof sealing strip is maintained, the size of the wear will be larger, which will affect the strength and precision of the waterproof sealing strip, and will also affect the grinding efficiency.

[0018] 3. By setting the discharge screw, the contact area between the waterproof sealing strip and the second guide groove is increased, which avoids the loosening or over-tightening of the waterproof sealing strip on the positioning screw due to insufficient discharge tension or large tension force. The loosening and over-tightening of the waterproof sealing strip on the positioning screw will cause a decrease in grinding accuracy and affect the flatness of the polished surface of the waterproof sealing strip after grinding.

[0019] 4. The grinding wheel is synchronized with the discharge screw, so that the discharge speed is synchronized with the grinding speed, which improves the consistency of the grinding strength and wear degree of the waterproof sealing strip.

[0020] 5. In order to make the waterproof sealing strip move smoothly in the first guide groove, a lubrication structure is provided to prevent the waterproof sealing strip from shaking in the first guide groove due to large friction resistance, thereby ensuring the stability and continuity of the movement of the waterproof sealing strip and preventing lubricating oil from entering the polished surface of the waterproof sealing strip.

[0021] 6. On the positioning screw, the waterproof sealing strip is only wrapped around the middle section to ensure that the entry and exit ends of the waterproof sealing strip on the positioning screw are away from the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the continuous grinding device in working state.

[0023] Figure 2 It is a structural schematic diagram of the continuous grinding device in a non-working state.

[0024] Figure 3 It is a structural schematic diagram of the positioning screw.

[0025] In the figure, 1, machine base; 2, grinding wheel; 21, rough grinding section; 22, fine grinding section; 23, polishing section; 3, positioning screw; 31, first guide groove; 4, feeding screw; 41, second guide groove; 51, take-up wheel; 52, unwinding wheel; 53, driving motor; 54, take-up motor; 61, first gear; 62, second gear; 63, third gear; 64, fourth gear; 71, dust cover; 72, dust suction pipe; 81, liquid hole; 82, overflow channel; 83, liquid storage tank. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, it includes a machine base 1, a grinding wheel 2, a positioning screw 3, a feeding screw 4, a winding wheel 51 and a discharge wheel 52. The grinding wheel 2 is rotatably connected to the machine base 1, and the grinding wheel 2 is driven by a driving motor 53. The positioning screw 3 is fixedly connected to the machine base 1, and the axis of the positioning screw 3 is parallel to the axis of the grinding screw. The feeding screw 4 is connected to the grinding wheel 2 through a reduction mechanism. The positioning screw 3 has a spiral first guide groove 31 adapted to the width of the waterproof sealing strip, and the feeding screw 4 has a spiral second guide groove 41 adapted to the width of the waterproof sealing strip. The waterproof sealing strip is pulled between the discharge wheel 52 and the winding wheel 51. After the waterproof sealing strip is pulled out by the discharge wheel 52, it bypasses the second guide groove 41 and the first guide groove 31 in turn, and the grinding wheel 2 fits the outer wall of the waterproof sealing strip outside the first guide groove 31.

[0028] The grinding wheel 2 is provided with a rough grinding section 21 , a fine grinding section 22 and a polishing section 23 in sequence along the running direction of the waterproof sealing strip on the first guide groove 31 .

[0029] The reduction mechanism includes a first gear 61 connected to the grinding wheel 2, a second gear 62 rotatably connected to the machine base 1, a third gear 63 rotatably connected to the machine base 1 and a fourth gear 64 connected to the discharge screw. The second gear 62 simultaneously meshes with the first gear 61 and the third gear 63, and the fourth gear 64 meshes with the third gear 63.

[0030] A dust cover 71 is fixedly provided on the machine base 1 , and the dust cover 71 partially wraps the grinding wheel 2 . A dust suction pipe 72 is connected to the dust cover 71 , and the dust suction pipe 72 is connected to an exhaust fan.

[0031] The reel 51 is connected to a reel motor 54 which drives the waterproof sealing strip between the positioning screw 3 and the reel 51 to be in a tensioned state.

[0032] An overrunning clutch is provided between the reel 51 and the reel motor 54, so that the reel 51 can tension the waterproof sealing strip and can reel the waterproof sealing strip when the waterproof sealing strip is in a relaxed state.

[0033] The positioning screw 3 is made of metal material, and the discharge screw is made of hard plastic material.

[0034] The positioning screw 3 is provided with a lubrication structure for lubricating the first guide groove 31, and the lubrication structure includes a liquid through hole 81 opened at the axis of the positioning screw 3, and a plurality of overflow channels 82 perpendicular to the liquid through hole 81 are provided on the positioning screw 3, the inner end of the overflow channel 82 is connected to the liquid through hole 81, and the outer end of the overflow channel 82 passes through the bottom wall of the first guide groove 31; one end of the liquid through hole 81 is sealed, and the other end of the liquid through hole 81 is connected to a liquid storage tank 83 storing lubricating oil.

[0035] During the movement of the waterproof sealing strip in the first guide groove 31 , the lubricating oil overflowing from the overflow channel 82 is smeared into the entire first guide groove 31 to ensure uniform lubrication.

[0036] The continuous grinding method of the waterproof sealing strip includes the following steps: pulling out from the end of the waterproof sealing strip wound on the discharge wheel 52, winding several circles along the second guide groove 41 on the discharge screw, and then passing through the first guide groove 31 from one end of the positioning screw 3, and then pulling from the other end of the first guide groove 31 to the winding wheel 51, the grinding wheel 2 is against the waterproof sealing strip in the middle section of the first guide groove 31, starting the drive motor 53, the winding motor 54 and the exhaust fan, the discharge screw and the grinding wheel 2 rotate synchronously, the positioning screw 3 does not move, and the waterproof sealing strip slides at a uniform speed relative to the positioning screw 3 in the first guide groove 31, so that all parts of the waterproof sealing strip wound on the discharge wheel 52 are coarsely ground, finely ground and polished in turn, and the flying dust and waste residue generated by grinding are collected.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A continuous polishing device for a waterproof sealing strip, characterized in that: The invention comprises a machine base (1), a grinding wheel (2), a positioning screw (3), a feeding screw (4), a winding wheel (51) and a feeding wheel (52), wherein the grinding wheel (2) is rotatably connected to the machine base (1), the grinding wheel (2) is driven by a driving motor (53), the positioning screw (3) is fixedly connected to the machine base (1), the axis of the positioning screw (3) is parallel to the axis of the grinding screw, the feeding screw (4) is connected to the grinding wheel (2) via a reduction mechanism, and the positioning screw (3) is connected to the grinding wheel (2) via a reduction mechanism. The positioning screw (3) has a spiral first guide groove (31) adapted to the width of the waterproof sealing strip, the feeding screw (4) has a spiral second guide groove (41) adapted to the width of the waterproof sealing strip, the waterproof sealing strip is pulled between the unwinding wheel (52) and the winding wheel (51), the waterproof sealing strip is pulled out by the unwinding wheel (52) and then bypasses the second guide groove (41) and the first guide groove (31) in sequence, and the grinding wheel (2) is in contact with the outer wall of the waterproof sealing strip outside the first guide groove (31); The grinding wheel (2) is provided with a rough grinding section (21), a fine grinding section (22) and a polishing section (23) in sequence along the running direction of the waterproof sealing strip on the first guide groove (31); The speed reduction mechanism comprises a first gear (61) connected to the grinding wheel (2), a second gear (62) rotatably connected to the machine base (1), a third gear (63) rotatably connected to the machine base (1), and a fourth gear (64) connected to the feeding screw (4), wherein the second gear (62) simultaneously meshes with the first gear (61) and the third gear (63), and the fourth gear (64) meshes with the third gear (63).

2. A continuous polishing device for a waterproof sealing strip according to claim 1, characterized in that: A dust cover (71) is fixedly arranged on the machine base (1), the dust cover (71) partially wraps the grinding wheel (2), the dust cover (71) is connected to a dust suction pipe (72), and the dust suction pipe (72) is connected to an exhaust fan.

3. The continuous polishing device for a waterproof sealing strip according to claim 1, characterized in that: The reeling wheel (51) is connected to a reeling motor (54) which drives the waterproof sealing strip between the positioning screw (3) and the reeling wheel (51) to be in a tensioned state.

4. The continuous polishing device for a waterproof sealing strip according to claim 1, characterized in that: The positioning screw (3) is made of metal material, and the feeding screw (4) is made of hard plastic material.

5. The continuous polishing device for waterproof sealing strip according to claim 1, characterized in that: The positioning screw (3) is provided with a lubricating structure for lubricating the first guide groove (31), the lubricating structure comprising a liquid through hole (81) opened at the axis of the positioning screw (3), the positioning screw (3) is provided with a plurality of overflow channels (82) perpendicular to the liquid through hole (81), the inner end of the overflow channel (82) is connected to the liquid through hole (81), and the outer end of the overflow channel (82) passes through the bottom wall of the first guide groove (31); one end of the liquid through hole (81) is sealed, and the other end of the liquid through hole (81) is connected to a liquid storage tank (83) storing lubricating oil.

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