Double-roller rubber coating machine

Abstract

The invention discloses a double-roller rubber coating machine, which belongs to the technical field of clamping equipment and comprises an operation table, rubber columns are tightly sleeved with expanded rubber rings side by side, the rubber ring on the leftmost side abuts against one end of a clamping mechanism, the rubber ring on the rightmost side is located at the rightmost end of the rubber columns, a conveying mechanism is arranged between the rubber columns, and one of the double rollers directly faces the rubber columns. The double rollers comprise a wheel shaft and a group of rollers arranged on the wheel shaft, a wheel groove is formed in each roller, the diameter of each roller is the same as that of a rubber column, the diameter of each wheel groove is smaller than that of each roller, one end of the conveying mechanism is arranged on the operation table, and the conveying mechanism is movably connected with the clamping mechanism; according to the invention, the clamping mechanism continuously and alternately realizes moving positioning of the double rollers and then stops rubber coating, so that continuous rapid rubber coating of multiple double rollers is realized, precise positioning during stepping of the double rollers and precise positioning during rubber coating of the double rollers are realized at the same time, the production efficiency is high, and rubber rings and wheel grooves are precisely fixed; the product quality is high.

Description

Technical Field

[0001] The present invention relates to the technical field of clamping equipment, and particularly to a double-roller rubber coating machine. Background Art

[0002] The double-roller is a rolling mechanism for mobile devices. Its structure is a single-axis double-wheel, which strengthens the support of the roller for the mobile device and is widely used in carts or small freight trolleys, etc. To increase the friction between the roller and the ground during rolling and to buffer and shock-absorb the mobile device, a rubber ring is covered on the wheel groove of the roller. The rubber ring is made of elastic rubber material. During the production of the rubber ring, it is enlarged by equipment and closely sleeved on the rubber column side by side for use when the roller is rubber-coated. In the prior art, when rubber-coating the roller, the rubber ring on the rubber column needs to be removed first. Since the diameter of the wheel groove of the roller is smaller than the diameter of the roller, to ensure that the rubber ring is tightened in the wheel groove, an inner support mechanism is also required to expand the removed rubber ring and pass it through the roller, and then the rubber ring is removed by a removal device, so that the rubber ring automatically rebounds and is fixed in the wheel groove, thereby completing the rubber coating of the double-roller. However, the above prior art uses more equipment and the operation is cumbersome. Among them, removing the rubber ring from the rubber column, then expanding the rubber ring through the inner support mechanism, and then removing the rubber ring by the removal mechanism not only has a cumbersome operation and low efficiency of rubber coating the roller, but also the rubber ring and the wheel groove cannot be accurately positioned during the removal of the rubber ring, easily causing the rubber ring and the wheel groove to be fixed in a misaligned position. Summary of the Invention

[0003] In order to solve the technical problems mentioned in the above background art, the present invention provides a double-roller rubber coating machine, and the technical solution adopted is as follows: It includes an operation table. Inside the operation table, a PLC control cabinet is provided. On the operation table, a clamping mechanism and a set of fixing mechanisms are provided. The clamping mechanism is arranged inside the operation table, and the fixing mechanism is arranged on the upper part of the operation table. The clamping mechanism is connected to the fixing mechanism. The fixing mechanism includes a fixing plate arranged on the operation table. On the fixing plate, a rubber column is provided. On the rubber column, enlarged rubber rings are closely sleeved side by side. The leftmost rubber ring abuts against one end of the clamping mechanism, and the rightmost rubber ring is located at the rightmost end of the rubber column. A conveying mechanism is arranged between the rubber columns. On the conveying mechanism, a number of double-rollers are evenly arranged side by side. One of the double-rollers is directly opposite to the space between the rubber columns. The double-roller includes a wheel shaft and a set of rollers arranged on the wheel shaft. On the rollers, wheel grooves are provided. The diameter of the roller is the same as the diameter of the rubber column, and the diameter of the wheel groove is smaller than the diameter of the roller. One end of the conveying mechanism is arranged on the operation table, and the conveying mechanism is movably connected to the clamping mechanism.

[0004] Further, the operation table includes legs and a number of cross beams arranged on the legs. There are gaps between the cross beams.

[0005] Further, the clamping mechanism includes a gear part and clamping parts arranged on both sides of the gear part. A motor is arranged on the gear part. The gear part is movably connected to the conveying mechanism. One end of the clamping part is arranged on the rubber column.

[0006] Further, the gear member includes a gearbox. The upper part of the gearbox is an open structure. A first bearing, a second bearing, and a third bearing are sequentially arranged on the gearbox from top to bottom. A first gear, a half gear, and a second gear are sequentially arranged in the gearbox from top to bottom. The half gear meshes with the first gear and the second gear respectively. A first rotating shaft, a second rotating shaft, and a third rotating shaft are respectively arranged on the first gear, the half gear, and the second gear. The first rotating shaft, the second rotating shaft, and the third rotating shaft are respectively connected to the first bearing, the second bearing, and the third bearing. Among them, the first gear is higher than the upper part of the gearbox and is movably connected to the conveying mechanism. The output shaft of the motor is connected to the second rotating shaft, and a clamping member is arranged on the third rotating shaft.

[0007] Further, a support plate is arranged on the gearbox, and the motor is arranged on the support plate.

[0008] Further, fixing blocks are arranged on both sides of the gearbox, and the fixing blocks are fixed to the cross beam.

[0009] Further, the clamping member includes a threaded rod arranged on the third rotating shaft. A threaded sleeve is arranged on the threaded rod. An L-shaped connecting rod is arranged on the threaded sleeve. A clamping plate is arranged on the L-shaped connecting rod. A sliding hole is arranged on the clamping plate. The clamping plate is sleeved on the rubber column through the sliding hole, and the rubber column abuts against the leftmost rubber ring.

[0010] Further, the conveying mechanism includes a rack. A plurality of shaft holes are evenly distributed on the rack. The wheel shafts of the double rollers are placed in the shaft holes. The distance between the two rollers of the double rollers is the same as the width of the rack. The rack meshes with the first gear. Chute grooves are arranged on both sides of the rack, and a set of L-shaped limiting rods are arranged in the chute grooves. The L-shaped limiting rods are fixed to the cross beam.

[0011] The present invention has the following advantages: Place the double rollers on the conveying mechanism. The clamping mechanism drives the rubber rings arranged side by side and closely on the conveying mechanism and the fixing mechanism respectively. First, the clamping mechanism drives the conveying mechanism to step, so that the double rollers on the conveying mechanism reach between two rubber columns. Since the diameter of the rollers is the same as that of the rubber columns, at this time, the two ends of the double rollers are butted against the two rubber columns side by side. This step is the precise positioning between the double rollers and the rubber columns. Then, the conveying mechanism and the double rollers stop. The two ends of the conveying mechanism clamp the rubber rings on the two rubber columns respectively and move towards each other by a distance equal to the thickness of one rubber ring, so that the outermost rubber ring on the two original rubber columns first moves and is sleeved on the rollers. Since the thickness of the rubber ring is much greater than the thickness of the side of the roller, a small part of the rubber ring is sleeved on the roller, and most of it hangs outside the wheel groove. The rubber ring is elastically expanded. At this time, it hangs outside the wheel groove, and the rubber ring is round and smooth. Under the elastic contraction potential energy, the small part of the rubber ring sleeved on the roller shrinks and slides off the roller into the wheel groove, tightly clamping on the wheel groove, realizing the rubber coating of the double rollers. This step is the precise positioning of the rubber ring covering the wheel groove. The present invention realizes the moving positioning and then stops the rubber coating of the double rollers through the continuous alternating of the clamping mechanism. It not only realizes the continuous and rapid rubber coating of multiple double rollers, but also realizes the precise positioning when the double rollers step and the precise positioning when the double rollers are rubber-coated at the same time. It not only has high production efficiency, but also the rubber rings and the wheel grooves are fixed precisely, and the product quality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional Figure 1 ; Figure 2 is a three-dimensional Figure 2 ; Figure 3 is a three-dimensional Figure 3 ; Figure 4 is a three-dimensional schematic diagram of the rubber columns of the present invention with the rubber rings removed; Figure 5 is of the present invention Figure 4 is a partial enlarged view of part a in Figure 6 is a three-dimensional view of the conveying mechanism of the present invention; Figure 7 is a three-dimensional Figure 4 ; Figure 8 is of the present invention Figure 7 is a partial enlarged view of part b in

[0013] Attached drawings: 1. Operating table, 2. PLC control cabinet, 3. Fixed plate, 4. Rubber column, 5. Rubber ring, 6. Double rollers, 7. Axle, 8. Roller, 9. Groove, 10. Leg, 11. Cross beam, 12. Motor, 13. Gear box, 14. First bearing, 15. Second bearing, 16. Third bearing, 17. First gear, 18. Half gear, 19. Second gear, 20. First rotating shaft, 21. Second rotating shaft, 22. Third rotating shaft, 23. Support plate, 24. Fixed block, 25. Threaded rod, 26. Threaded sleeve, 27. L-shaped connecting rod, 28. Clamping plate, 29. Slide hole, 30. Rack, 31. Axle hole, 32. Slide groove, 33. L-shaped limiting rod. Detailed implementation

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0015] Please refer to Figures 1 to 8, the present invention provides a double-roller rubber coating machine, which includes an operation table 1. Inside the operation table 1, a PLC control cabinet 2 is provided to control the operation of the motor 12. On the operation table 1, a clamping mechanism and a set of fixing mechanisms are provided. The clamping mechanism has two functions: one is to drive the conveying mechanism to move, and the other is to clamp the rubber rings 5 closely arranged side by side on the two rubber columns 4 and clamp the rubber rings 5 to move. The clamping mechanism is arranged inside the operation table 1, and the fixing mechanism is arranged on the upper part of the operation table 1. The clamping mechanism is connected to the fixing mechanism. The fixing mechanism includes a fixing plate 3 arranged on the operation table 1. The fixing plate 3 is fixed on the operation table 1. On the fixing plate 3, rubber columns 4 are provided. The rubber columns 4 are fixed on the fixing plate 3. On the rubber columns 4, enlarged rubber rings 5 are closely sleeved side by side. The rubber rings 5 are made of elastic rubber material. After being enlarged, they are sleeved on the rubber columns 4. This is to ensure that when leaving the production line, they can tightly sleeve on the rubber columns 4 without deviation. The leftmost rubber ring 5 abuts against one end of the clamping mechanism, and the rightmost rubber ring 5 is located at the rightmost end of the rubber column 4. This is to ensure that after each previous rubber ring 5 moves a distance equal to the thickness of one rubber ring 5, the next rubber ring 5 can also always be close to one side of the double rollers 6 when the next double rollers 6 are butted against the rubber column 4. Between the rubber columns 4, a conveying mechanism is provided. On the conveying mechanism, a number of double rollers 6 are evenly arranged side by side. One of the double rollers 6 is directly opposite between the rubber columns 4. The double rollers 6 include a wheel shaft 7 and a set of rollers 8 arranged on the wheel shaft 7. On the rollers 8, wheel grooves 9 are provided. The diameter of the rollers 8 is the same as the diameter of the rubber columns 4, so that the rubber rings 5 can smoothly slide from the rubber columns 4 to the side edges of the rollers 8. The diameter of the wheel grooves 9 is smaller than the diameter of the rollers 8. When the rubber rings 5 shrink to the normal state on the wheel grooves 9, they will tightly hoop on the wheel grooves 9. One end of the conveying mechanism is arranged on the operation table 1, and the conveying mechanism is movably connected to the clamping mechanism.

[0016] The operation table 1 includes legs 10 and a number of cross beams 11 arranged on the legs 10. There are gaps between the cross beams 11. The clamping mechanism includes a gear member and clamping members arranged on both sides of the gear member. On the gear member, a motor 12 is provided. The motor 12 drives the gear member, and the gear member drives the clamping members to perform clamping actions. The gear member is movably connected to the conveying mechanism, and the gear member drives the conveying mechanism. One end of the clamping member is arranged on the rubber column 4 to clamp the rubber rings 5 on the rubber column 4.

[0017] The gear member includes a gearbox 13. The upper part of the gearbox 13 is an open structure, facilitating the exposure of the first gear 17 outside the gearbox 13. The first bearing 14, the second bearing 15, and the third bearing 16 are sequentially arranged on the gearbox 13 from top to bottom. The first gear 17, the half gear 18, and the second gear 19 are sequentially arranged in the gearbox 13 from top to bottom. The half gear 18 meshes with the first gear 17 and the second gear 19 respectively. When the half gear 18 rotates and meshes with the first gear 17 to drive the first gear 17 to rotate, the second gear 19 does not mesh with the half gear 18, so the second gear 19 does not rotate. Similarly, when the half gear 18 drives the second gear 19 to rotate, the first gear 17 does not rotate. The first shaft 20, the second shaft 21, and the third shaft 22 are respectively arranged on the first gear 17, the half gear 18, and the second gear 19. The first shaft 20, the second shaft 21, and the third shaft 22 are respectively connected to the first bearing 14, the second bearing 15, and the third bearing 16. Among them, the first gear 17 is higher than the upper part of the gearbox 13 and is movably connected to the conveying mechanism. The output shaft of the motor 12 is connected to the second shaft 21. The motor 12 drives the second shaft 21 to rotate slowly on the second bearing 15. A clamping member is arranged on the third shaft 22. A support plate 23 is arranged on the gearbox 13. The motor 12 is arranged on the support plate 23. The support plate 23 is fixed on the gearbox 13. The motor 12 is fixed on the support plate 23. Fixed blocks 24 are arranged on both sides of the gearbox 13. The fixed blocks 24 are fixed to the cross beam 11. The gearbox 13 is fixed to the cross beam 11 through the fixed blocks 24.

[0018] The clamping member includes a threaded rod 25 arranged on the third shaft 22. A threaded sleeve 26 is arranged on the threaded rod 25. An L-shaped connecting rod 27 is arranged on the threaded sleeve 26. A clamping plate 28 is arranged on the L-shaped connecting rod 27. A sliding hole 29 is arranged on the clamping plate 28. The clamping plate 28 is sleeved on the rubber column 4 through the sliding hole 29. The rubber column 4 abuts against the leftmost rubber ring 5. When the second gear 19 rotates, the second gear 19 drives the third shaft 22 to rotate. The third shaft 22 drives the threaded rod 25 to rotate. When the threaded rod 25 rotates, the threaded sleeve 26 on the threaded rod 25 moves toward the side close to the double rollers 6 on the threaded rod 25. The threaded sleeve 26 drives the L-shaped connecting rod 27. The L-shaped connecting rod 27 drives the clamping plate 28 to move toward the side close to the double rollers 6 on the rubber column 4, so that the clamping plate 28 clamps the rubber ring 5 on the rubber column 4 and moves.

[0019] The conveying mechanism includes a rack 30, on which a number of shaft holes 31 are evenly distributed. The axle 7 of the double rollers 6 is placed on the shaft holes 31. The distance between the two rollers 8 of the double rollers 6 is the same as the width of the rack 30, so that while the axle 7 of the double rollers 6 is stuck in the shaft holes 31, the two rollers 8 on the double rollers 6 are stuck to the left and right of the rack 30, enabling the double rollers 6 to be stably placed on the rack 30. The rack 30 meshes with the first gear 17. The rotation of the first gear 17 drives the rack 30 to move. On both sides of the rack 30, there are sliding grooves 32, and a set of L-shaped limiting rods 33 are arranged in the sliding grooves 32. The L-shaped limiting rods 33 are fixed on the cross beam 11. The L-shaped limiting rods 33 limit and support the rack 30. At the same time, when the rack 30 moves, the sliding grooves 32 move on the L-shaped limiting rods 33.

[0020] The working principle of the present invention: Place the axle 7 of each double roller 6 on the corresponding shaft hole 31 to limit the double roller 6 on the rack 30. Start the motor 12 through the PLC control cabinet 2. The motor 12 drives the second rotating shaft 21 to slowly rotate on the second bearing 15. The second rotating shaft 21 drives the half gear 18 to rotate. The toothed part of the half gear 18 first meshes with the first gear 17 and drives the first gear 17 to rotate. The first gear 17 drives the first rotating shaft 20 to rotate on the first bearing 14. The first gear 17 simultaneously drives the rack 30 to move forward. The sliding groove 32 slides on the L-shaped limiting rod 33. The rack 30 drives the double roller 6 to move forward. When the two sides of the previous double roller 6 are exactly in the middle of the two rubber columns 4, the two sides of the double roller 6 are exactly docked with the rubber columns 4 respectively. At this time, the toothed part of the half gear 18 just disengages from the first gear 17, and the rack 30 and the double roller 6 stop moving. Then the toothed part of the half gear 18 meshes with the second gear 19 and drives the second gear 19 to rotate. The second gear 19 drives the third rotating shaft 22 to rotate on the third bearing 16. The third rotating shaft 22 drives the threaded rod 25 to rotate. The rotation of the threaded rod 25 drives the threaded sleeve 26 to move on the threaded rod 25 in the direction close to the gear box 13. The threaded sleeve 26 drives the L-shaped connecting rod 27, and the threaded rod 25 drives the clamping plate 28 to move synchronously. The clamping plate 28 moves on the rubber column 4 and clamps all the rubber rings 5 on the rubber column 4 and moves them in the direction of the double roller 6, so that all the rubber rings 5 move a distance equal to the thickness of one rubber ring 5. The rubber ring 5 first slides and sleeves on the side of the roller 8, and most of the rubber ring 5 is suspended outside the wheel groove 9. Since the rubber ring 5 is a smooth round bar and has an elastic potential energy of contraction, the rubber ring 5 retracts like a rubber band and slides off the side of the roller 8 and enters the wheel groove 9 and tightly fits on the wheel groove 9, completing the rubber coating of the double roller 6. At this time, the toothed part of the half gear 18 just disengages from the second gear 19, and the clamping plate 28 stops moving. The half gear 18 drives the first gear 17 and the rack 30 to move again to coat the next double roller 6. It should be noted that when the rubber coating of the last double roller 6 on the rack 30 is completed, the motor 12 rotates in the reverse direction and drives the rack 30 to move in the reverse direction, facilitating the return of the rack 30.

[0021] The operation of the present invention is simple and convenient to use, and is suitable for comprehensive promotion and application. Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-roller rubber coating machine, comprising an operating table (1), and a PLC control cabinet (2) is arranged inside the operating table (1), and is characterized in that, A clamping mechanism and a set of fixing mechanisms are arranged on the operating table (1). The clamping mechanism is arranged inside the operating table (1), and the fixing mechanism is arranged on the upper part of the operating table (1). The clamping mechanism is connected to the fixing mechanism. The fixing mechanism includes a fixing plate (3) arranged on the operating table (1). A rubber column (4) is arranged on the fixing plate (3). Enlarged rubber rings (5) are closely sleeved side by side on the rubber column (4). The leftmost rubber ring (5) abuts against one end of the clamping mechanism, and the rightmost rubber ring (5) is located at the rightmost end of the rubber column (4). A conveying mechanism is arranged between the rubber columns (4). A number of double rollers (6) are evenly arranged side by side on the conveying mechanism. One of the double rollers (6) is directly opposite the space between the rubber columns (4). The double roller (6) includes a wheel shaft (7) and a set of rollers (8) arranged on the wheel shaft (7). A wheel groove (9) is arranged on the roller (8). The diameter of the roller (8) is the same as that of the rubber column (4), and the diameter of the wheel groove (9) is smaller than that of the roller (8). One end of the conveying mechanism is arranged on the operating table (1), and the conveying mechanism is movably connected to the clamping mechanism.

2. The double-roller rubber coating machine according to claim 1, and is characterized in that, The operating table (1) includes legs (10) and a number of cross beams (11) arranged on the legs (10). There are gaps between the cross beams (11).

3. The double-roller rubber coating machine according to claim 2, and is characterized in that, The clamping mechanism includes a gear member and clamping members arranged on both sides of the gear member. A motor (12) is arranged on the gear member. The gear member is movably connected to the conveying mechanism. One end of the clamping member is arranged on the rubber column (4).

4. The double-roller rubber coating machine according to claim 3, and is characterized in that, The gear member includes a gear box (13). The upper part of the gear box (13) is an open structure. A first bearing (14), a second bearing (15), and a third bearing (16) are arranged on the gear box (13) from top to bottom in sequence. A first gear (17), a half gear (18), and a second gear (19) are arranged in the gear box (13) from top to bottom in sequence. The half gear (18) meshes with the first gear (17) and the second gear (19) respectively. A first rotating shaft (20), a second rotating shaft (21), and a third rotating shaft (22) are arranged on the first gear (17), the half gear (18), and the second gear (19) respectively. The first rotating shaft (20), the second rotating shaft (21), and the third rotating shaft (22) are connected to the first bearing (14), the second bearing (15), and the third bearing (16) respectively. Among them, the first gear (17) is higher than the upper part of the gear box (13) and is movably connected to the conveying mechanism. The output shaft of the motor (12) is connected to the second rotating shaft (21), and a clamping member is arranged on the third rotating shaft (22).

5. The double-roller rubber coating machine according to claim 4, and is characterized in that, A support plate (23) is arranged on the gear box (13), and the motor (12) is arranged on the support plate (23).

6. The double-roller rubber coating machine according to claim 5, and is characterized in that, Fixing blocks (24) are arranged on both sides of the gear box (13), and the fixing blocks (24) are fixed to the cross beam (11).

7. The double-roller rubber coating machine according to claim 6, and is characterized in that, The clamping member includes a threaded rod (25) disposed on the third rotating shaft (22), a threaded sleeve (26) is arranged on the threaded rod (25), an L-shaped connecting rod (27) is arranged on the threaded sleeve (26), a clamping plate (28) is arranged on the L-shaped connecting rod (27), a sliding hole (29) is arranged on the clamping plate (28), the clamping plate (28) is sleeved on the rubber column (4) through the sliding hole (29), and the rubber column (4) abuts against the leftmost rubber ring (5).

8. The double-roller rubber coating machine according to claim 7, and is characterized in that, The conveying mechanism includes a rack (30), a plurality of shaft holes (31) are evenly distributed on the rack (30), the wheel shaft (7) of the double roller (6) is placed in the shaft hole (31), the distance between the two rollers (8) of the double roller (6) is the same as the width of the rack (30), the rack (30) is meshed with the first gear (17), chutes (32) are arranged on both sides of the rack (30), and a group of L-shaped limiting rods (33) are arranged in the chutes (32), and the L-shaped limiting rods (33) are fixed on the cross beam (11).

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