A shaftless cone-top transmission mechanism for mesh roller of dry composite machine

Abstract

The utility model discloses a shaftless cone-top transmission mechanism of a mesh roller of a dry-type composite machine, comprising a top shaft arranged in a fixed sleeve, the right end of the top shaft being rotatably connected with the cone sleeve through a bearing, both side ports of the fixed sleeve being provided with step slots, the inner holes of the step slots being fixed with self-lubricating copper sleeves which are concentric with the fixed sleeve, and the step slots on the left and right sides are respectively fixed with a left hydraulic expansion sleeve and a right hydraulic expansion sleeve in their outer step slots; the top shaft is slidably nested in the self-lubricating copper sleeve in the fixed sleeve, and the left and right ends of the top shaft respectively penetrate the left hydraulic expansion sleeve and the right hydraulic expansion sleeve; the left end of the fixed sleeve is fixedly connected with a connecting sleeve, and a pushing mechanism which drives the top shaft to slide along its axial direction is fixedly provided in the connecting sleeve; the utility model has the advantages of high precision in supporting the transmission of the anilox roller and improving the printing effect of the dry-type composite machine.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a shaftless cone-top transmission mechanism of a screen roller of a dry-type composite machine. Background Art

[0002] The core components of the printing press include the anilox roller, plate roller and printing roller. The mesh roller is a cylindrical structure, and both ends of the mesh roller are tightened by cone sleeves (top sleeves) on both sides. One end of the mesh roller is the main drive device, which consists of a motor, a reduction gear box, a transmission shaft, a top cone sleeve, and a top shaft. The other end is the cone top transmission device, which consists of a motor, a screw, a synchronous pulley, a synchronous belt, a cone sleeve, a top shaft, and a bearing box. The patent publication number is: CN111070857B, which discloses a shaftless cone-top printing plate roller mechanism, specifically discloses an M-side cone-top structure, in which the top shaft of the M-side cone-top structure is driven by a rotatable screw to move axially, and the top shaft is slidably nested in the support sleeve through a sliding sleeve. However, due to the large contact area between the sliding sleeve and the top shaft, a gap is left between the top shaft and the sliding sleeve, and there is no structure on the support sleeve to limit the axial or radial movement of the top shaft. Therefore, the coaxiality of the top shaft and the cone sleeve and the anilox roller cannot be guaranteed, the cone sleeve and the top shaft are prone to radial or axial shaking, the accuracy of the transmission support for the anilox roller is low, and the printing effect is affected. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a shaftless cone-top transmission mechanism for the anilox roller of a dry-type composite machine. The top shaft and the cone sleeve have high coaxiality with the anilox roller, which prevents the cone sleeve and the top shaft from radial or axial shaking. The transmission support for the anilox roller has high precision, which improves the printing effect of the dry-type composite machine and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaftless cone top transmission mechanism of a mesh wire roller of a dry composite machine, comprising a top shaft arranged in a fixed sleeve, a cone sleeve arranged at the right end of the top shaft, step slots are provided at both side ports of the fixed sleeve, self-lubricating copper sleeves which are concentric with the fixed sleeve are fixedly provided at the inner holes of the step slots, a left hydraulic expansion sleeve is fixedly provided in the outer step slot of the step slot located on the left side, and a right hydraulic expansion sleeve is fixedly provided in the outer step slot of the step slot located on the right side, and the left hydraulic expansion sleeve and the right hydraulic expansion sleeve are both provided with two inlet and outlet oil pipes which are connected with the internal oil chambers thereof; the top shaft is slidably nested in the self-lubricating copper sleeve in the fixed sleeve, and the left end and the right end of the top shaft respectively penetrate the left hydraulic expansion sleeve and the right hydraulic expansion sleeve; the left end of the fixed sleeve is fixedly connected with a connecting sleeve, and the outer wall of the connecting sleeve is provided with a clearance hole at the position of the inlet and outlet oil pipes on the left hydraulic expansion sleeve, and a pushing mechanism which drives the top shaft to slide along its axial direction is fixedly provided in the connecting sleeve; the top shaft is rotatably connected with the cone sleeve through a bearing.

[0005] Furthermore, the pushing mechanism includes a reduction motor fixed in a connecting sleeve, the transmission shaft of the reduction motor is connected to a screw rod through a coupling, the left end of the top shaft is provided with a threaded groove matching the screw rod along its axial direction, and the screw rod is threadedly connected in the threaded groove.

[0006] Furthermore, a spline groove is provided on the annular inner wall at the center of the fixing sleeve, and spline teeth matching the spline groove are provided on the circumferential outer wall of the top shaft.

[0007] Furthermore, a flange is provided at the left end of the circumferential outer wall of the fixing sleeve, and a mounting hole is provided on the flange.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the shaftless cone-top transmission mechanism of the mesh roller of the dry-type composite machine has a simple structure, and the self-lubricating copper sleeves on both sides of the fixed sleeve are slidably matched with the top shaft, so the sliding friction of the top shaft is small, the sliding is smooth and stable, and the coaxiality of the top shaft and the fixed sleeve can be guaranteed, that is, the coaxiality of the cone sleeve and the anilox roller is high; the top shaft is fixed by the left hydraulic expansion sleeve and the right hydraulic expansion sleeve on both sides of the fixed sleeve to prevent the top shaft from radially or axially shaking when the cone sleeve rotates with the anilox roller, thereby improving the accuracy of the transmission support for the anilox roller, improving the printing effect of the dry-type composite machine, and also avoiding the situation where the reduction motor is damaged due to shaking of the top shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the top shaft structure of the utility model;

[0011] Figure 3 This is the right side view of the fixing sleeve of the utility model;

[0012] Figure 4 It is a partial enlarged view of the connection between the top shaft and the tapered sleeve of the utility model.

[0013] In the figure: 1. Fixed sleeve; 101. Step slot hole; 102. Flange; 103. Spline slot; 2. Self-lubricating copper sleeve; 3. Top shaft; 31. Threaded groove; 32. Spline teeth; 4. Left hydraulic expansion sleeve; 41. Inlet and outlet oil pipes; 5. Right hydraulic expansion sleeve; 6. Connecting sleeve; 7. Reducer motor; 8. Screw; 9. Taper sleeve; 10. Bearing. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0015] See also Figure 1-4 The utility model provides a technical solution: a shaftless cone-top transmission mechanism of a mesh wire roller of a dry composite machine, comprising a top shaft 3 arranged in a fixed sleeve 1, the right end of the top shaft 3 is rotatably connected to a cone sleeve 9 through a bearing 10, both side ports of the fixed sleeve 1 are provided with step slots 101, the inner holes of the step slots 101 are fixed with self-lubricating copper sleeves 2 which are concentric with the fixed sleeve 1, the step slots 101 located on the left side are fixed with a left hydraulic expansion sleeve 4 in the outer step slot, the step slots 101 located on the right side are fixed with a right hydraulic expansion sleeve 5 in the outer step slot, the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5 are both provided with two inlet and outlet oil pipes 41 which are connected with the internal oil chambers thereof; the hydraulic chambers of the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5 are connected with an external oil pump assembly through the inlet and outlet oil pipes 41; the top shaft 3 is slidably nested in the self-lubricating copper sleeve 2 in the fixed sleeve 1 In the sliding copper sleeve 2, the left and right ends of the top shaft 3 respectively penetrate the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5, and the top shaft 3 is clearance-matched with the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5; the left end of the fixed sleeve 1 is fixedly connected with a connecting sleeve 6, and the outer wall of the connecting sleeve 6 is provided with a clearance hole at the position of the inlet and outlet oil pipes 41 on the left hydraulic expansion sleeve 4, and a pushing mechanism for driving the top shaft 3 to slide along its axial direction is fixedly provided in the connecting sleeve 6; the pushing mechanism includes a reduction motor 7 fixedly provided in the connecting sleeve 6, and the transmission shaft of the reduction motor 7 is connected with a screw 8 through a coupling, and the left end of the top shaft 3 is provided with a threaded groove 31 adapted to the screw 8 along its axial direction, and the screw 8 is threadedly connected in the threaded groove 31; the left end of the circumferential outer wall of the fixed sleeve 1 is provided with a flange 102, and a mounting hole is provided on the flange 102.

[0016] Working principle:

[0017] It is fixedly connected to the external dry-type compound machine wall panel through the flange 102 on the fixed sleeve 1; one end of the anilox roller is tightened by the driving end top sleeve provided on the dry-type compound machine, and the other end of the anilox roller is tightened by the tapered sleeve 9 on the top shaft 3. When the anilox roller rotates, the tapered sleeve 9 rotates together with the anilox roller, and the top shaft 3 is fixed; when the anilox roller needs to be axially adjusted or disassembled, the reduction motor 7 drives the screw rod 8 to rotate, so that the tapered sleeve 9 moves along the self-lubricating copper sleeve 2 with the top shaft 3, and at the same time cooperates with the movement of the driving end top sleeve on the dry-type compound machine to complete the axial adjustment or disassembly of the anilox roller; when the tapered sleeve 9 moves to a suitable position, the external oil pump assembly is used to supply oil to the hydraulic cavities of the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5, and the inner expansion sleeves of the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5 clamp and fix the top shaft 3.

[0018] Furthermore, a spline groove 103 is provided on the annular inner wall at the center of the fixed sleeve 1, and a spline tooth 32 adapted to the spline groove 103 is provided on the circumferential outer wall of the top shaft 3; the spline teeth 32 provided in the middle part of the top shaft 3 cooperate with the spline groove 103 to improve the sliding stability and bending resistance of the top shaft 3, and can prevent the top shaft 3 from radial rotation.

[0019] The shaftless cone-top transmission mechanism of the mesh roller of the dry-type composite machine disclosed in the present embodiment has a self-lubricating copper sleeve 2 provided on both sides of the fixed sleeve 1 and a sliding cooperation with the top shaft 3. The top shaft 3 has a small sliding friction force and slides smoothly and steadily, and can ensure the coaxiality of the top shaft 3 and the fixed sleeve 1, that is, the coaxiality of the cone sleeve 9 and the anilox roller is high; the top shaft 3 is fixed by the left hydraulic expansion sleeve 4 and the right hydraulic expansion sleeve 5 provided on both sides of the fixed sleeve 1 to prevent the top shaft 3 from radially or axially shaking when the cone sleeve 9 rotates with the anilox roller, thereby improving the accuracy of the transmission support for the anilox roller, improving the printing effect of the dry-type composite machine, and also avoiding the situation where the reduction motor 7 is damaged due to the shaking of the top shaft 3.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaftless cone top transmission mechanism of a wire roller of a dry laminating machine, comprising a top shaft arranged in a fixed sleeve, a cone sleeve being arranged at the right end of the top shaft, characterized in that: The two side ports of the fixed sleeve are provided with step slots, and the inner holes of the step slots are fixed with self-lubricating copper sleeves which are concentric with the fixed sleeve. The step slot located on the left side is fixed with a left hydraulic expansion sleeve in the outer step slot, and the step slot located on the right side is fixed with a right hydraulic expansion sleeve in the outer step slot. The left hydraulic expansion sleeve and the right hydraulic expansion sleeve are both provided with two inlet and outlet oil pipes connected with their internal oil chambers; the top shaft is slidably nested in the self-lubricating copper sleeve in the fixed sleeve, and the left end and the right end of the top shaft respectively penetrate the left hydraulic expansion sleeve and the right hydraulic expansion sleeve; the left end of the fixed sleeve is fixedly connected with a connecting sleeve, and the outer wall of the connecting sleeve is provided with a clearance hole at the position of the inlet and outlet oil pipes on the left hydraulic expansion sleeve, and a pushing mechanism for driving the top shaft to slide along its axial direction is fixed in the connecting sleeve; the top shaft is rotatably connected with the tapered sleeve through a bearing.

2. The shaftless cone-top transmission mechanism of the mesh wire roller of the dry laminating machine according to claim 1, characterized in that: The pushing mechanism includes a reduction motor fixed in a connecting sleeve, a transmission shaft of the reduction motor is connected to a screw rod through a coupling, a thread groove matching the screw rod is opened along the axial direction of the left end of the top shaft, and the screw rod is threadedly connected in the thread groove.

3. The shaftless cone-top transmission mechanism of the mesh wire roller of the dry laminating machine according to claim 1, characterized in that: A spline groove is provided on the annular inner wall at the center of the fixing sleeve, and spline teeth matching the spline groove are provided on the circumferential outer wall of the top shaft.

4. The shaftless cone-top transmission mechanism of the mesh wire roller of the dry laminating machine according to claim 1, characterized in that: The left end of the circumferential outer wall of the fixing sleeve is provided with a flange, and a mounting hole is opened on the flange.

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