Quickly assembled and disassembled rubber roller assembly of photogravure press

Abstract

The utility model discloses a quick dismounting rubber roller assembly of a gravure press, which comprises a left side plate, a right side plate and a middle rubber roller (comprising a conical roller shaft and a detachable rubber sleeve), the left side plate and the right side plate are symmetrical, a middle hole of the roller shaft is connected with an air pump, and air outlet holes are formed in the periphery of the roller shaft; protruding shafts at the two ends of the rubber roller are connected through a first shaft sleeve assembly and a second shaft sleeve assembly respectively (the first shaft sleeve is driven by a first air cylinder to ascend and descend, and the second shaft sleeve is driven by a second air cylinder to ascend and descend). When the rubber sleeve is replaced, the cylinder drives the rubber roller to move downwards, the protective arm is loosened, the air pump is ventilated to open the inner aperture of the rubber sleeve to facilitate assembly and disassembly, and the rubber sleeve is retracted and fixed after being sleeved. The problems that a traditional integrated rubber roller needs to be disassembled integrally, and operation is tedious are solved, single-person rapid disassembly and assembly are achieved, efficiency is improved, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gravure printing machine, concretely relates to a quick dismounting and mounting rubber roller assembly of gravure printing machine. BACKGROUND

[0002] In the existing gravure printing machine, the rubber roller rotates synchronously with the printing plate cylinder to realize ink transfer, and its structure is usually designed in an integrated manner of roller shaft and rubber body. The rubber body on the surface of the rubber roller is prone to aging and needs to be frequently replaced during high-speed operation. However, the overall weight of the traditional rubber roller is large, and it needs to be disassembled and assembled by multiple people, which is complicated, low in efficiency and has safety hazards. SUMMARY

[0003] The utility model aims at solving the problems of integral rubber roller replacement, overall disassembly, inconvenient operation, low efficiency and safety hazards in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a quick dismounting and mounting rubber roller assembly of gravure printing machine, which comprises left and right side plates arranged symmetrically and a rubber roller arranged between the left and right side plates. The rubber roller comprises a roller shaft and a rubber sleeve detachably mounted on the roller shaft. The outer peripheral wall of the roller shaft is conical. The inner hole of the rubber sleeve is matched with the outer peripheral wall of the roller shaft. One end of the middle hole of the roller shaft is connected with a gas pump through an air pipe. The outer periphery of the roller shaft is provided with an air outlet hole communicated with the middle hole. The two ends of the rubber roller are respectively provided with protruding shafts. The protruding shaft at one end is provided with a first shaft sleeve assembly, and the protruding shaft at the other end is provided with a second shaft sleeve assembly. The first shaft sleeve assembly is driven to lift by a first air cylinder. The second shaft sleeve assembly is driven to lift by a second air cylinder. The second air cylinder drives a clamping mechanism for clamping or loosening the second shaft sleeve assembly.

[0005] The first shaft sleeve assembly and the second shaft sleeve assembly each comprise a positioning sleeve, and an inner shaft sleeve is arranged in the positioning sleeve. A bearing is arranged between the inner hole wall of the positioning sleeve and the outer wall of the inner shaft sleeve.

[0006] A first guide rail is arranged on the left side plate, and a second guide rail is arranged on the right side plate. A first sliding block is slidingly matched with the first guide rail. The piston rod of the first air cylinder is connected with the first sliding block. The first sliding block is connected with the first shaft sleeve assembly. A second sliding block is slidingly matched with the second guide rail. The piston rod of the second air cylinder is connected with the second sliding block. The second sliding block is connected with the clamping mechanism. The clamping mechanism comprises a lifting air cylinder, an upper arm and a lower arm. The upper arm and the lower arm are used for clamping and loosening the second shaft sleeve assembly. A lifting air cylinder is further connected to the second sliding block. The piston rod of the lifting air cylinder is connected with the upper arm. The lower arm is fixed on the second sliding block. Arc-shaped grooves are arranged on the upper arm and the lower arm respectively for positioning the second shaft sleeve assembly.

[0007] The conical outer peripheral wall of the roller shaft enables the rubber sleeve to slide out or slide in along the conical peripheral surface.

[0008] The beneficial effects of the present application are as follows: through the split rubber roller and the air pressure auxiliary dismounting structure, the lifting and clamping mechanism driven by the air cylinder is matched to realize the rapid dismounting of the rubber sleeve by one person, the rubber roller does not need to be integrally carried, the replacement efficiency is significantly improved, the operation safety hazard is reduced, the conical roller shaft and the air pressure are matched to ensure that the rubber sleeve is closely attached, and the printing quality is ensured.

[0009] The present application will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a side view of the specific embodiment of the present application;

[0011] Figure 2 is a structural view of the specific embodiment of the present application.

[0012] Mark 1-left side plate; 2-right side plate; 3-rubber roller; 31-roller shaft; 313-air outlet hole; 32-rubber sleeve; 4-first guide rail; 5-first sliding block; 6-first air cylinder; 7-first shaft sleeve assembly; 8-second guide rail; 9-second sliding block; 10-second air cylinder; 11-second shaft sleeve assembly; 12-lower arm guard; 13-lifting air cylinder; 14-upper arm guard; 15-bearing; 16-positioning sleeve; 17-inner shaft sleeve. DETAILED DESCRIPTION

[0013] The present application will be further described below in combination with the drawings and specific embodiments.

[0014] As shown in Figure 1 , Figure 2 The quick dismounting rubber roller assembly structure of the gravure printing machine of the present embodiment is as follows:

[0015] Frame support: the left side plate and the right side plate are arranged in parallel and symmetrically, and the interval is adapted to the length of the rubber roller.

[0016] Rubber roller structure: the rubber roller 3 comprises a roller shaft 31 and a rubber sleeve 32, the outer peripheral wall of the roller shaft 31 is conical (the diameter gradually decreases from one end to the other end), the inner hole of the rubber sleeve 32 is adapted to the conical outer peripheral wall (can be mounted and dismounted through the conical surface sliding), the roller shaft 31 is internally provided with a hole, one end is connected to an air pump through an air pipe, and a plurality of air outlet holes 313 communicating with the hole are uniformly arranged on the outer peripheral wall (when air is discharged, the airflow acts on the inner wall of the inner hole of the rubber sleeve 32 to make it elastically expand), and when the rubber sleeve is installed, the larger end of the inner hole of the rubber sleeve is sleeved to the smaller end of the outer diameter of the roller shaft.

[0017] The left drive mechanism: the first guide rail 4 is installed on the left plate 1, and the first sliding block 5 is slidably connected to the first guide rail 4; the first cylinder 6 is also installed on the left plate 1, and the piston rod of the first cylinder 6 is connected to the first sliding block 5; the first shaft sleeve assembly 7 (the structure is the same as the second shaft sleeve assembly 11) is fixedly connected to the first sliding block 5, and the left end protruding shaft of the rubber roller 3 is inserted into the first shaft sleeve assembly 7.

[0018] The right drive and clamping mechanism: the second guide rail 8 is installed on the right plate 2, and the second sliding block 9 is slidably connected to the second guide rail 8; the second cylinder 10 is also installed on the right plate 2, and the piston rod of the second cylinder 10 is connected to the second sliding block 9; the “L”-shaped lower arm 12 and the lifting cylinder 13 (the piston rod is connected to the upper arm 14) are installed on the second sliding block 9; the upper arm 14 and the lower arm 12 are arranged in a vertical relationship and are both provided with an arc-shaped groove (used for clamping the second shaft sleeve assembly 11); the right end protruding shaft of the rubber roller 3 is inserted into the second shaft sleeve assembly 11.

[0019] The shaft sleeve assembly structure: the first shaft sleeve assembly 7 and the second shaft sleeve assembly 11 have the same structure and both include a positioning sleeve 16, the inner hole of the positioning sleeve 16 is assembled with an inner shaft sleeve 17, and the inner hole wall of the positioning sleeve 16 and the outer wall of the inner shaft sleeve 17 are provided with a bearing 15 (realizing the rotation of the rubber roller 3 relative to the shaft sleeve assembly).

[0020] The disassembly and assembly process: when the rubber sleeve 32 is replaced, the first cylinder 6 and the second cylinder 10 synchronously drive the first sliding block 5 and the second sliding block 9 to move downward (driving the rubber roller 3 to descend to the operating height), the lifting cylinder 13 drives the upper arm 14 to move upward to loosen the clamping of the second shaft sleeve assembly 11; the air pump is started to inflate the hole of the roller shaft 31, the gas is blown out through the air outlet hole 313 and acts on the inner wall of the inner hole of the rubber sleeve 32, so that the inner hole diameter of the rubber sleeve 32 is expanded (separated from the conical outer peripheral wall of the roller shaft 31); after the old rubber sleeve 32 is manually removed and the new rubber sleeve 32 is installed, the air pump is turned off, and the rubber sleeve 32 is tightly attached to the conical outer peripheral wall of the roller shaft 31 due to the elastic contraction; the lifting cylinder 13 drives the upper arm 14 to move downward to re-clamp the second shaft sleeve assembly 11, the first cylinder 6 and the second cylinder 10 drive the rubber roller 3 to reset to the working position, and the rapid disassembly and assembly are completed.

[0021] After the above technical scheme is adopted, the following technical effects can be achieved: through the split type rubber roller (roller shaft + detachable rubber sleeve) and the gas pressure auxiliary disassembly structure, in cooperation with the lifting and clamping mechanism driven by the cylinder, one person can quickly disassemble and assemble the rubber sleeve, the rubber roller does not need to be carried as a whole, the replacement efficiency is significantly improved (about 80% of manpower and time is reduced), the operation safety hidden danger is reduced, the conical roller shaft and the gas pressure cooperation ensure that the rubber sleeve is tightly attached, and the printing quality is guaranteed.

Claims

1. A quick dismounting rubber roller assembly of a gravure printing machine, comprising a left side plate (1), a right side plate (2) arranged symmetrically, and a rubber roller (3) arranged between the left side plate (1) and the right side plate (2), characterized in that, The rubber roller (3) comprises a roller shaft (31) and a rubber sleeve (32) detachably mounted on the roller shaft (31), the outer peripheral wall of the roller shaft (31) is tapered, the inner hole of the rubber sleeve (32) is matched with the outer peripheral wall of the roller shaft (31), one end of the middle hole of the roller shaft (31) is connected with the air pump through the air pipe, and the outer periphery of the roller shaft (31) is provided with an air outlet hole (313) communicated with the middle hole; the two ends of the rubber roller (3) are respectively provided with protruding shafts, one end of the protruding shaft is provided with a first shaft sleeve assembly (7), and the other end of the protruding shaft is provided with a second shaft sleeve assembly (11); the first shaft sleeve assembly (7) is driven to lift by the first air cylinder (6), and the second shaft sleeve assembly (11) is driven to lift by the second air cylinder (10); the second air cylinder (10) drives a clamping mechanism for clamping or loosening the second shaft sleeve assembly (11).

2. The quick change roller assembly of the intaglio printing press according to claim 1, wherein, The first shaft sleeve assembly (7) and the second shaft sleeve assembly (11) both comprise a positioning sleeve (16), the positioning sleeve (16) is provided with an inner shaft sleeve (17) therein, and a bearing (15) is arranged between the inner hole wall of the positioning sleeve (16) and the outer wall of the inner shaft sleeve (17).

3. The quick change roller assembly of a gravure printing press of claim 1 wherein, The left side plate (1) is provided with a first guide rail (4), the right side plate (2) is provided with a second guide rail (8), the first guide rail (4) is slidably connected with a first sliding block (5), the piston rod of the first air cylinder (6) is connected with the first sliding block (5), and the first sliding block (5) is connected with the first shaft sleeve assembly (7); the second guide rail (8) is slidably connected with a second sliding block (9), the piston rod of the second air cylinder (10) is connected with the second sliding block (9), the second sliding block (9) is connected with the clamping mechanism, the clamping mechanism comprises a lifting cylinder (13), an upper arm (14) and a lower arm (12), the upper arm (14) and the lower arm (12) are used for clamping and loosening the second shaft sleeve assembly (11), the lifting cylinder (13) is further connected to the second sliding block (9), the piston rod of the lifting cylinder (13) is connected with the upper arm (14), the lower arm (12) is fixed on the second sliding block (9), and the upper arm (14) and the lower arm (12) are respectively provided with arc-shaped grooves for positioning the second shaft sleeve assembly (11).

4. The quick change roller assembly of the gravure printing press of claim 1 wherein, The tapered outer peripheral wall of the roller shaft (31) enables the rubber sleeve (32) to slide out or slide in along the tapered peripheral surface.

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