Plate-drum assembly of curved printing machine and curved printing machine

Abstract

The present application relates to the field of printing technology, and specifically discloses a plate-cylinder assembly of a curved printing press and a curved printing press, wherein the plate-cylinder assembly includes a plate-cylinder body, a left turbine assembly, a right turbine assembly, a gear assembly, and a first adjustment assembly, wherein: the plate-cylinder body includes a left shaft, a cylinder, and a right shaft connected in sequence; the left turbine assembly includes a left turbine and a left worm rod; the right turbine assembly includes a right turbine and a right worm rod; the gear assembly includes a gear sleeved on the right shaft and a gear outer sleeve; the first adjustment assembly is sleeved on the right shaft and threadedly connected to the right shaft, and the first adjustment assembly is connected to the right turbine through a thrust ball bearing. The plate-cylinder assembly of a curved printing press and the curved printing press of the present invention can adjust the position of the plate-cylinder assembly without stopping the machine, thereby achieving smooth printing work, and reducing the scrap rate of products. The adjustment process is also more time-saving and labor-saving, and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to a plate-drum assembly of a curved printing press and the curved printing press. Background Art

[0002] Curved surface printing technology is widely used in the manufacturing process of outer packaging of chemical, daily chemical, pharmaceutical, food and other products. In the existing curved surface printing process, the plate cylinder is a carrier for printing patterns and texts. The color group applies different inks on the outer surface of the plate cylinder and then transfers them to the required products. When multiple color groups are overprinted on the same product at the same time, each plate cylinder must have a starting reference, and the pressure and position must be accurate and uniform to align the required printing position and effect.

[0003] In the actual printing process, the thermal expansion and contraction of the machine will cause the plate to move, and the resulting small deviation requires stopping the machine for readjustment, which will cause unnecessary troubles, waste manpower and material resources, and thus reduce productivity. Operators generally make adjustments based on experience, and there is no good way to achieve a series of operational problems such as the adjustment symmetry of the front, back, left, and right positions in the printing position. There are generally problems such as cumbersome operations and unguaranteed accuracy. Frequent machine starts and stops will also increase the scrap rate of products, causing a series of production capacity and quality problems.

[0004] This solution aims at the existing problems and improves the structure of the plate tube. Summary of the invention

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a plate-drum assembly of a curved printing machine and a curved printing machine.

[0006] A plate-drum assembly of a curved printing press of the present invention comprises a plate-drum body, a left turbine assembly, a right turbine assembly, a gear assembly and a first adjustment assembly, wherein:

[0007] The plate-cylinder body comprises a left shaft, a cylinder body and a right shaft which are connected in sequence;

[0008] The left turbine assembly includes a left turbine and a left turbine shaft; the left turbine is sleeved on the left shaft and is rotatably connected to the left shaft; the left turbine shaft is installed below the left turbine and meshes with the outer peripheral surface of the left turbine;

[0009] The right turbine assembly includes a right turbine and a right turbine rod; the right turbine is sleeved on the right shaft and is rotatably connected to the right shaft; the right turbine rod is installed below the right turbine and meshes with the outer peripheral surface of the right turbine;

[0010] The gear assembly includes a gear sleeved on the right shaft and a gear outer sleeve, the gear is slidably connected relative to the right shaft, and the gear outer sleeve fixes the gear on the right shaft;

[0011] The first adjusting component is sleeved on the right shaft and is threadedly connected with the right shaft. The first adjusting component is connected with the right turbine through a thrust ball bearing.

[0012] Furthermore, the plate-tube assembly further comprises a second adjustment component, wherein:

[0013] An axial inner hole is formed at the end of the right shaft, and a long hole perpendicular to the axial inner hole is formed on the right shaft, and the long hole is connected to the axial inner hole;

[0014] The second adjusting component is fixedly connected to the gear component through the axial inner hole and the bar hole.

[0015] Furthermore, the first adjustment assembly includes left and right adjustment wheels and an adjustment wheel scale, and the plate barrel body also includes a first inner sleeve sleeved on the right shaft, wherein:

[0016] The adjusting wheel scale is fixedly sleeved on the left and right adjusting wheels, the left and right adjusting wheels are sleeved on the first inner sleeve, and the left and right adjusting wheels are threadedly connected with the first inner sleeve.

[0017] Further, the second adjustment assembly includes an inner pull rod and a pull rod pin, wherein:

[0018] The inner tie rod is installed in the axial inner hole of the right shaft;

[0019] The pull rod pin passes through the long hole and is fixedly connected to the inner pull rod;

[0020] An annular groove is arranged on the inner surface of the gear, and two ends of the pull rod pin are located in the annular groove.

[0021] Furthermore, the second adjustment assembly further includes a second inner sleeve and an outer adjustment sleeve, wherein:

[0022] The second inner sleeve is rotatably connected to the first adjustment assembly;

[0023] The outer adjustment sleeve is sleeved on the second inner sleeve and is threadedly connected to the second inner sleeve;

[0024] The outer adjusting sleeve is connected with the inner pull rod.

[0025] Furthermore, the second adjustment component also includes a screw and a digital hand wheel, wherein:

[0026] One end of the screw is threadedly connected to the second inner sleeve, and the other end of the screw is fixedly connected to the digital hand wheel;

[0027] The outer end surface of the digital handwheel is provided with a clock scale.

[0028] Furthermore, a relief resin is provided on the outer peripheral surface of the cylinder in the plate cylinder body.

[0029] Furthermore, the left turbine and the right turbine are eccentric turbines.

[0030] Furthermore, the gear is a helical gear.

[0031] The present invention also includes a curved surface printing machine, comprising the above-mentioned plate-drum assembly, a first power device drivingly connected to the plate-drum assembly, and a printing wheel and a second power device drivingly connected to the printing wheel, wherein:

[0032] A plurality of plate-drum assemblies are arranged at equal intervals along the circumference of the printing wheel.

[0033] The plate-cylinder assembly of the curved printing machine and the curved printing machine of the present invention can adjust the position of the plate-cylinder assembly without stopping the machine, wherein the plate-cylinder assembly can support the plate-cylinder body through the arrangement of the left turbine assembly and the right turbine assembly, and can also meet the adjustment of the plate-cylinder body in the y-axis direction without stopping the machine, thereby adjusting the pressure between the cylinder and the printing wheel; the gear assembly serves as the power transmission part of the plate-cylinder assembly, and drives the plate-cylinder body by meshing with an external power device, and the meshing method can achieve the same linear speed movement as other equipment, and the problem of overprinting misalignment will not occur; the first adjustment component can meet the position adjustment of the plate-cylinder body in the x-axis direction without stopping the machine, so that the cylinder position corresponds to the external equipment, thereby realizing the smooth progress of the plate-cylinder transfer work, and the non-stop adjustment will reduce the scrap rate of the product, and the adjustment process is also more time-saving and labor-saving, and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the plate-drum assembly of the curved printing machine according to the embodiment of the present invention;

[0036] Figure 2 It is a front structural schematic diagram of a plate-drum assembly of a curved printing press according to an embodiment of the present invention;

[0037] Figure 3 for Figure 2 AA cross-sectional diagram of ;

[0038] Among them: 1-plate-cylinder assembly, 11-plate-cylinder body, 111-left shaft, 112-cylinder body, 113-right shaft, 114-first inner sleeve, 12-left turbine assembly, 121-left turbine, 122-left vortex rod, 123-left vortex rod fixing block, 13-right turbine assembly, 131-right turbine, 132-right vortex rod, 133-right vortex rod fixing block, 14-gear assembly, 141-gear, 142-gear outer sleeve, 15-first adjustment assembly, 151-left and right adjustment wheels, 152-adjustment wheel scale, 16-second adjustment assembly, 161-inner pull rod, 162-pull rod pin, 163-second inner sleeve, 164-outer adjustment sleeve, 165-screw, 166-digital handwheel. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0040] like Figures 1 to 3 As shown, the embodiment of the present invention discloses a plate-drum assembly of a curved printing press, wherein the plate-drum assembly 1 comprises a plate-drum body 11, a left turbine assembly 12, a right turbine assembly 13, a gear assembly 14 and a first adjustment assembly 15, wherein: the plate-drum body 11 comprises a left shaft 111, a cylinder 112 and a right shaft 113 connected in sequence; the left turbine assembly 12 comprises a left turbine 121 and a left worm rod 122; the left turbine 121 is sleeved on the left shaft 111 and is rotationally connected to the left shaft 111; the left worm rod 122 is installed below the left turbine 121 and meshes with the outer peripheral surface of the left turbine 121; the right turbine assembly 13 comprises a right turbine 131 and a right vortex rod 132; the right turbine 131 is sleeved on the right shaft 113 and is rotatably connected to the right shaft 113; the right vortex rod 132 is installed below the right turbine 131 and is meshed with the outer peripheral surface of the right turbine 131; the gear assembly 14 includes a gear 141 sleeved on the right shaft 113 and a gear outer sleeve 142, the gear 141 is slidably connected relative to the right shaft 113, and the gear outer sleeve 142 fixes the gear 141 on the right shaft 113; the first adjusting assembly 15 is sleeved on the right shaft 113 and is threadedly connected to the right shaft 113, and the first adjusting assembly 15 is connected to the right turbine 131 through a thrust ball bearing.

[0041] In the embodiment of the present invention, Figures 1 to 3As shown, the left worm 122 and the right worm 132 are fixed on the curved printing machine and are at a certain distance from each other. The left turbine 121 and the right turbine 131 are respectively engaged with the left worm 122 and the right worm 132, and the plate cylinder body 11 can rotate relative to the left turbine 121 and the right turbine 131, while the positions of the left turbine 121 and the right turbine 131 do not rotate under the action of the left worm 122 and the right worm 132. In the plate cylinder body 11, the outer peripheral surface of the cylinder 112 is provided with relief resin, which contacts the outer peripheral surface of the printing wheel in the curved printing machine. In this embodiment, by rotating the left worm 122 and the right worm 132, adjusting the position of the left turbine 121 engaged on the left worm 122, and adjusting the position of the right turbine 131 engaged on the right worm 132, the pressure between the cylinder 112 and the printing wheel is adjusted, and the position adjustment of the plate cylinder body 11 in the y-axis direction is achieved. The first adjustment component 15 is screwedly connected to the right shaft 113, and the first adjustment component 15 is connected to the right turbine 131 through a thrust ball bearing, and the thrust ball bearing can bear axial load. When the first adjustment component 15 rotates, the right turbine 131 can remain fixed and can limit the first adjustment component 15. Therefore, when the first adjustment component 15 rotates, since the plane position of the right turbine 131 is fixed, the plane position of the first adjustment component 15 is also unchanged, and the plate cylinder body 11 will move left or right with the rotation of the first adjustment component 15, thereby realizing the position adjustment of the plate cylinder body 11 in the x-axis direction. The plate cylinder body 11 in this embodiment is adapted to the position of the printing wheel to adjust the x-axis and y-axis, so that the position between the cylinder body 112 and the printing wheel matches.

[0042] In the embodiment of the present invention, Figures 1 to 3 As shown, the plate cylinder body 11 includes a left shaft 111, a cylinder 112 and a right shaft 113 fixed as one, and the left shaft 111, the cylinder 112 and the right shaft 113 are coaxially connected. This embodiment does not limit the specific dimensions of the left shaft 111, the cylinder 112 and the right shaft 113, which can be designed by those skilled in the art according to the specific situation.

[0043] In the left turbine assembly 12 of the present embodiment, the outer circumference of the left turbine 121 and the left worm 122 are provided with mutually matching threads. The left turbine assembly 12 of the present embodiment also includes two left worm fixing blocks 123, which are respectively installed at the two ends of the left worm 122, and the left worm fixing blocks 123 are fixed to the curved printing machine to support the left worm 122, the left turbine 121 above, and the left side of the plate cylinder body 11. Similarly, in the right turbine assembly 13, the outer circumference of the right turbine 131 and the right worm 132 are provided with matching threads. The right turbine assembly 13 also includes two right worm fixing blocks 133, which are respectively installed at the two ends of the right worm 133, and the right worm fixing blocks 133 are fixed to the curved printing machine to support the right worm 132, the right turbine 131 above, and the right side of the plate cylinder body 11. The left turbine assembly 12 and the right turbine assembly 13 in this embodiment can rotate relative to the plate barrel body 11 and can be connected by bearings to reduce the friction caused by the relative rotation. Preferably, the left turbine 121 in this embodiment is rotationally connected to the left shaft 111 through a self-aligning ball bearing.

[0044] The gear assembly 14 in this embodiment is used to mesh with an external device to achieve the driving function of the plate cylinder body 11. The gear 141 can slide left and right relative to the right shaft 111, and the gear 141 is fixed to the right shaft 113 through the gear outer sleeve 142. The gear 141 in this embodiment can be provided with a thread, and the gear outer sleeve 142 is threadedly connected to the gear 141 to achieve fixation relative to the right shaft 113. The gear 141 in this embodiment is a helical gear, and the pattern on the outer peripheral surface of the cylinder body 112 is transferred to the printing wheel through the transmission of the gear 141, and then printed on the product.

[0045] The plate-cylinder assembly of the embodiment of the present invention can support the plate-cylinder body through the arrangement of the left turbine assembly and the right turbine assembly, and can also satisfy the adjustment of the plate-cylinder body in the y-axis direction without stopping the machine, thereby adjusting the pressure between the cylinder body and the printing wheel; the gear assembly, as the power transmission part of the plate-cylinder assembly, drives the plate-cylinder body through meshing with an external power device, and the meshing method can achieve movement with other equipment at the same linear speed, and the problem of overprinting misalignment will not occur; the first adjustment assembly can satisfy the position adjustment of the plate-cylinder body in the x-axis direction without stopping the machine, so that the cylinder position corresponds to the external equipment, thereby realizing the smooth progress of the plate-cylinder transfer work, and the adjustment without stopping the machine will reduce the scrap rate of the product, and the adjustment process is also more time-saving, labor-saving and easy to operate.

[0046] Specifically, Figures 1 to 3As shown, the plate-tube assembly 1 of the embodiment of the present invention further includes a second adjustment component 16, wherein: an axial inner hole is provided at the end of the right shaft 113, and a long strip hole perpendicular to the axial inner hole is provided on the right shaft 113, and the long strip hole is connected with the axial inner hole; the second adjustment component 16 is fixedly connected with the gear component 14 through the axial inner hole and the strip hole. When the gear 141 is not fixedly mounted on the right shaft 113, the second adjustment component 16 of this embodiment can slide left and right in the strip hole, thereby driving the gear 141 to slide left and right on the right shaft 113. Since the gear 141 in this embodiment is meshed with an external device, the position of the gear 141 does not change, and the plate-tube body 11 moves left and right relative to the gear 141. When the second adjustment component 16 is adjusted to the right position, the gear 141 and the right shaft 113 are locked by the gear outer sleeve 142, so as to achieve the adjustment of the plate-tube body 11 in the x-axis direction.

[0047] Specifically, Figures 1 to 3 As shown, the first adjustment component 15 in the embodiment of the present invention includes left and right adjustment wheels 151 and an adjustment wheel scale 152, and the plate barrel body 11 also includes a first inner sleeve 114 sleeved on the right shaft 113, wherein: the adjustment wheel scale 152 is fixedly sleeved on the left and right adjustment wheels 151, the left and right adjustment wheels 151 are sleeved on the first inner sleeve 114, and the left and right adjustment wheels 151 are threadedly connected with the first inner sleeve 114. The adjustment wheel scale 152 is circular, with scales on the outer circumference, and the adjustment wheel scale 152 is fixedly sleeved on the left and right adjustment wheels 151, and rotates integrally with the left and right adjustment wheels 151. When the operator rotates the left and right adjustment wheels 151, the displacement of the plate barrel body 11 relative to the right turbine assembly 13 in the x-axis direction can be calculated according to the rotation angle of the adjustment wheel scale 152, so as to achieve accurate adjustment. The left and right adjustment wheels 151 of this embodiment are connected to the right turbine 131 through a thrust ball bearing, and do not displace with the right turbine 131 in the x-axis direction.

[0048] Specifically, Figures 1 to 3 As shown, the second adjustment component 16 in the embodiment of the present invention includes an inner tie rod 161 and a tie rod pin 162, wherein: the inner tie rod 161 is installed in the axial inner hole of the right shaft 113; the tie rod pin 162 passes through the long hole and is fixedly connected to the inner tie rod 161; an annular groove is provided on the inner surface of the gear 141, and the two ends of the tie rod pin 162 are located in the annular groove. The inner tie rod 161 in this embodiment is connected to the gear 141 through the tie rod pin 162. When the inner tie rod 161 is pulled to the right or pushed to the left, the plate cylinder body 11 is moved left and right relative to the gear 141. When the position of the plate cylinder body 11 is adjusted to the right, the gear 141 and the right shaft 113 are locked by the gear outer sleeve 142 to adjust the plate cylinder body 11 in the x-axis direction.

[0049] Specifically, Figures 1 to 3As shown, in the embodiment of the present invention, the second adjustment component 16 also includes a second inner sleeve 163 and an outer adjustment sleeve 164, wherein: the second inner sleeve 163 is rotatably connected to the first adjustment component 15; the outer adjustment sleeve 164 is sleeved on the second inner sleeve 163 and is threadedly connected to the second inner sleeve 163, and the outer adjustment sleeve 164 is connected to the inner pull rod 161. In this embodiment, the second inner sleeve 163 can stop at the right end of the first adjustment component 15, and the first adjustment component 15 and the second inner sleeve do not move relative to each other in the x-axis direction, and only rotate in the circumferential direction without interfering with each other. When the outer adjustment sleeve 164 rotates, it screws with the second inner sleeve 163. Since the second inner sleeve 163 does not move in the x-axis direction, the outer adjustment sleeve 164 will relatively move to the left or right, thereby driving the inner pull rod 161 to move to the left or right, thereby adjusting the distance between the gear 141 and the cylinder 112 in the plate cylinder body 11.

[0050] Specifically, Figures 1 to 3 As shown, in the embodiment of the present invention, the second adjustment component 16 also includes a screw 165 and a digital hand wheel 166, wherein: one end of the screw 165 is threadedly connected to the second inner sleeve 163, and the other end of the screw 165 is fixedly connected to the digital hand wheel 166; the outer end surface of the digital hand wheel 166 is provided with a scale, and the operator uses the scale as a reference line to make corresponding adjustments during the adjustment process. This embodiment is connected to the second inner sleeve 163 through a thread, which can prevent the digital hand wheel 166 from rotating arbitrarily, thereby ensuring that the reference line is effective and making the adjustment effect more accurate.

[0051] Specifically, in the plate-cylinder assembly of the embodiment of the present invention, the left turbine 121 and the right turbine 131 are eccentric turbines. When the left turbine 121 and the right turbine 131 rotate, the positions of the center holes thereof will also change, so that the axis of the plate-cylinder body 11 can not only be maintained in a horizontal state, but also present a certain tilt angle, and the tilt angle of the tooth pattern on the gear 141 can also be adjusted, so as to be more adaptable to the adjustment requirements under complex conditions, so that the most perfect pressure relationship between the plate-cylinder body 11 and the printing wheel is achieved, and the printing effect of the product is improved.

[0052] The present invention also provides a curved printing machine, comprising a plurality of plate-cylinder assemblies of the above-mentioned embodiments, and also comprising a first power device connected to the plate-cylinder assemblies in a transmission manner, and a printing wheel and a second power device connected to the printing wheel in a transmission manner, wherein: a plurality of plate-cylinder assemblies are arranged at equal intervals along the circumference of the printing wheel. The first transmission device is meshed with the gears in the plate-cylinder assembly, driving the gears and the plate-cylinder body to rotate, transferring the ink to the printing wheel, and the printing wheel is driven to rotate by the second power device to print the ink on the corresponding product. This embodiment does not limit the specific structure and size of the first power device, the printing wheel and the second power device. As long as the curved printing machine composed of the plate-cylinder assembly of the embodiment of the present invention is used, it belongs to the content protected by the embodiment of the present invention.

[0053] The curved printing machine of this embodiment can adjust the position of the plate-drum assembly without stopping the machine, thereby achieving smooth printing and reducing the scrap rate of products. The adjustment process is also more time-saving, labor-saving and easy to operate.

[0054] The present invention is further described above with the aid of specific implementation methods, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention, and various modifications made to the above implementation methods by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A plate-drum assembly of a curved printing press, characterized in that: The plate-tube assembly comprises a plate-tube body, a left turbine assembly, a right turbine assembly, a gear assembly and a first adjustment assembly, wherein: The plate-cylinder body comprises a left shaft, a cylinder and a right shaft which are connected in sequence; The left turbine assembly includes a left turbine and a left worm gear; the left turbine is sleeved on the left shaft and is rotatably connected to the left shaft; the left worm gear is installed below the left turbine and meshes with the outer peripheral surface of the left turbine; The right turbine assembly includes a right turbine and a right worm gear; the right turbine is sleeved on the right shaft and is rotatably connected to the right shaft; the right worm gear is installed below the right turbine and meshes with the outer peripheral surface of the right turbine; The gear assembly comprises a gear and a gear outer sleeve sleeved on the right shaft, the gear is slidably connected relative to the right shaft, and the gear outer sleeve fixes the gear on the right shaft; The first adjustment component is sleeved on the right shaft and threadedly connected to the right shaft, and the first adjustment component is connected to the right turbine through a thrust ball bearing; Also included is a second adjustment assembly, wherein: An axial inner hole is formed at the end of the right shaft, and a long hole perpendicular to the axial inner hole is formed on the right shaft, and the long hole is connected to the axial inner hole; The second adjustment assembly is fixedly connected to the gear assembly through the axial inner hole and the elongated hole; The first adjustment assembly includes left and right adjustment wheels and an adjustment wheel scale, and the plate barrel body also includes a first inner sleeve sleeved on the right shaft, wherein: The adjusting wheel scale is fixedly sleeved on the left and right adjusting wheels, the left and right adjusting wheels are sleeved on the first inner sleeve, and the left and right adjusting wheels are threadedly connected to the first inner sleeve; The second adjustment assembly includes an inner pull rod and a pull rod pin, wherein: The inner pull rod is installed in the axial inner hole of the right shaft; The pull rod pin passes through the elongated hole and is fixedly connected to the inner pull rod; An annular groove is provided on the inner surface of the gear, and two ends of the pull rod pin are located in the annular groove; The left turbine and the right turbine are eccentric turbines.

2. The plate-drum assembly of a curved printing press according to claim 1, characterized in that: The second adjustment assembly further comprises a second inner sleeve and an outer adjustment sleeve, wherein: The second inner sleeve is rotatably connected to the first adjustment assembly; The outer adjustment sleeve is sleeved on the second inner sleeve and is threadedly connected to the second inner sleeve; The outer adjustment sleeve is connected to the inner pull rod.

3. The plate-drum assembly of a curved printing press according to claim 1, characterized in that: The second adjustment component also includes a screw and a digital hand wheel, wherein: One end of the screw is threadedly connected to the second inner sleeve, and the other end of the screw is fixedly connected to the digital handwheel; The outer end surface of the digital hand wheel is provided with a clock scale.

4. The plate-drum assembly of a curved printing press according to claim 1, characterized in that: The outer peripheral surface of the cylinder in the plate cylinder body is provided with relief resin.

5. The plate-drum assembly of a curved printing press according to claim 1, characterized in that: The gear is a helical gear.

6. A curved surface printing machine, characterized in that: The invention comprises a plurality of plate-drum assemblies as claimed in any one of claims 1 to 5, a first power device drivingly connected to the plate-drum assemblies, and a printing wheel and a second power device drivingly connected to the printing wheel, wherein: A plurality of the plate-cylinder assemblies are arranged at equal intervals along the circumference of the printing wheel.

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