A printing plate roller welding device

Abstract

The present invention is applicable to the technical field of welding devices, and provides a printing plate roller welding device, which includes a device main body, a moving slide, a first support frame, a second support frame, a welding machine table and a welding device. It further includes a rotating mechanism, a centering clamping mechanism and a centering alignment mechanism. The centering alignment mechanism includes a mounting assembly, a mounting support, a centering alignment assembly and an adjustment assembly. Through the moving slide and the rotating mechanism, the centering alignment mechanism can not only quickly center the printing plate roller and the roller core, ensure the coaxiality of the printing plate roller and the roller core, and reduce manual intervention, but also drive the end cover and the printing plate roller to rotate intermittently, so that the welding device can perform preliminary spot welding on the end of the end cover and the printing plate roller. The centering clamping mechanism can not only complete the centering clamping of the printing plate roller through the moving slide and the rotating mechanism, ensure that both ends of the printing plate roller are in a concentric position, but also drive the clamped printing plate roller to rotate circumferentially, realizing the circumferential continuous welding of the end of the printing plate roller by the welding device.

Description

Technical Field

[0001] The invention belongs to the technical field of welding devices, and in particular relates to a printing plate roller welding device. Background Art

[0002] The printing plate roller is a key component in a printing press, directly involved in the transfer of ink during the printing process. The roller body is typically made of metal materials such as steel or aluminum alloy, offering excellent strength and rigidity, capable of maintaining a stable shape under high-speed rotation and pressure. The printing plate roller typically consists of multiple parts, such as the roller body, sleeve, and roller core, which are typically welded together using welding equipment to form a single, integrated structure.

[0003] The existing printing plate roller welding device includes a base, side plates, a top plate, a welding machine and an automatic welding gun. A steel roller is arranged between the two groups of automatic welding guns. The bottom of the steel roller is abutted against an arc-shaped support plate. The steel roller is placed on the arc-shaped support plate, and the pulling block is pulled to drive the arc-shaped clamping plate to move. One end of the roller core is inserted into the positioning hole, and the pulling block is released. The anti-slip pad fixes it. At this time, the center of the steel roller and the center of the roller core are on the same horizontal line. The output shaft of the second motor rotates to drive the threaded block to move so that the two groups of movable plates are close to each other, so that one end of the roller core abuts against one end of the steel roller, and the automatic welding gun welds them. The output shaft of the first motor rotates to drive the fixed disk to rotate so that the steel roller and the roller core rotate synchronously for welding.

[0004] Although the existing device can achieve continuous welding of steel rollers and roller cores, when centering the steel rollers and roller cores, positioning holes and anti-slip pads are used to fix the roller cores, and arc-shaped support plates are used to support the steel rollers. However, this structure cannot ensure that the axis between the two is in the same position. Therefore, in actual operation, workers need to manually adjust the height of the arc-shaped support plate multiple times to achieve the ideal centering effect, which is not only time-consuming and labor-intensive, but also easily causes eccentricity between the steel rollers and the roller core, thereby affecting the welding quality.

[0005] Therefore, in view of the above status quo, it is urgent to develop a printing plate roller welding device to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] In view of the shortcomings of the prior art, an object of the embodiments of the present invention is to provide a printing plate roller welding device to solve the problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A printing plate roller welding device, including a device main body, on which two moving sliders are symmetrically and slidably installed, and at both ends of the two moving sliders, a first support frame and a second support frame are vertically fixed. A welding machine table is slidably installed on one side of the device main body, and welding equipment is installed on the welding machine table. It further includes:

[0009] A rotating mechanism, which is installed on the moving slider, and one end of the rotating mechanism is respectively rotatably connected to the first support frame and the second support frame;

[0010] A centering clamping mechanism, which is rotatably installed on the two second support frames, and the two second support frames and the centering clamping mechanism on them are close to each other. Openings are provided on one side of the centering clamping mechanism and the second support frame, and the centering clamping mechanism is connected to one end of the rotating mechanism;

[0011] A centering alignment mechanism, which includes a mounting component, a mounting support, a centering alignment component and an adjustment component. The mounting component is rotatably installed on the first support frame and is connected to one end of the rotating mechanism. The mounting component is concentric with the centering clamping mechanism. The two first support frames and the mounting component on them are far from each other. Three mounting supports are circumferentially and equidistantly distributed inside the mounting component. A centering alignment component is rotatably installed on each of the three mounting supports, and the centering alignment component is inclined to the first support frame. Both ends of the centering alignment component respectively extend to the left and right sides of the mounting component. One ends of the three centering alignment components are close to each other, and the other ends of the three centering alignment components are far from each other. And adjustment components are installed at the far ends of the three centering alignment components.

[0012] As a further technical solution of the present invention, the centering alignment component includes a first leg, a mounting shaft, a roller and a second leg. One end of the first leg is rotatably installed on the mounting support through the mounting shaft. A torsion spring is installed between the mounting shaft and the inner wall of the mounting component. A roller is movably installed at the other end of the first leg. The roller is in contact with the outer wall of the roller core. One end of the second leg is connected to one end of the first leg. An adjustment component is installed at the other end of the second leg.

[0013] As a further technical solution of the present invention, the length of the first leg is less than the length of the second leg. Connecting holes are circumferentially distributed at the connected ends of the first leg and the second leg. The second leg is connected to the first leg as a whole through the connecting holes and connecting screws.

[0014] As a further technical solution of the present invention, the installation component includes a second annular plate, a second annular rack and a second gear. The second annular plate is rotatably installed on the first support frame. The inner wall of the second annular plate is fixedly provided with installation supports at equal circumferential intervals. The outer wall of one end of the second annular plate is fixedly provided with a second annular rack. The second annular rack is meshed with the second gear rotatably installed on the first support frame. The second gear is connected to the rotation mechanism.

[0015] As a further technical solution of the present invention, the adjustment component includes a connecting shaft, an adjustment column, a sliding column, a second clamping plate and a spring. The connecting shaft is rotatably installed on the second leg. The middle part of the connecting shaft is vertically fixedly provided with an adjustment column. One end of the adjustment column is vertically slidably installed with a sliding column. One end of the sliding column is fixedly provided with a second clamping plate. The outer wall of the sliding column is sleeved with a spring. The two ends of the spring are respectively connected to the second clamping plate and the adjustment column.

[0016] As a further technical solution of the present invention, the centering clamping mechanism includes a first annular plate, a first annular rack, a first gear, a pneumatic telescopic member, a first clamping plate and an installation groove. The first annular plate is rotatably installed on the second support frame. The outer wall of the first annular plate is fixedly provided with a first annular rack. An opening is formed on one side of both the first annular plate and the first annular rack. The first gears are symmetrically and rotatably arranged on one side of the second support frame. The two first gears are respectively meshed with both sides of the first reversing rack. Both of the two first gears are connected to the rotation mechanism. The first annular plate is circumferentially and equidistantly provided with installation grooves. A pneumatic telescopic member is vertically installed in the installation groove. The output end of the pneumatic telescopic member faces the center of the first annular plate. A first clamping plate is fixedly provided on the output end of the pneumatic telescopic member.

[0017] As a further technical solution of the present invention, the arc length between the meshing points of the first annular rack and the two first gears is greater than the arc length of the opening of the first arc rack.

[0018] As a further technical solution of the present invention, the rotation mechanism includes a rotation motor, a transmission member and a transmission shaft. The rotation motor is fixed on the moving sliding seat. The transmission shaft is symmetrically and rotatably installed on the first support frame and the second support frame. One end of each of the two transmission shafts is fixedly connected to one of the two first gears. The other end of one transmission shaft is fixedly connected to the second gear. The other ends of the two transmission shafts are both connected to the output end of the rotation motor through the transmission member.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] By working in coordination with the moving slide and the rotating mechanism, the centering clamping mechanism can not only complete the centering and clamping of the printing plate roller, ensuring that both ends of the printing plate roller are in a concentric position, but also ensure that the positions on the printing plate roller that need to be welded are exposed within the overlapping openings of the second support frame and the centering clamping mechanism, facilitating the welding equipment to perform axial welding on the printing plate roller through the openings, improving the welding quality and efficiency; it can also drive the clamped printing plate roller to rotate circumferentially, enabling the welding equipment to perform continuous circumferential welding on the end of the printing plate roller, ensuring the welding quality between the end cover and the printing plate roller, and further improving the welding efficiency and quality of the welding device.

[0021] By working in coordination with the moving slide and the rotating mechanism, the centering alignment mechanism can not only quickly center the printing plate roller and the roller core, ensuring the coaxiality of the printing plate roller and the roller core, reducing manual intervention and shortening the centering time between the roller core and the printing plate roller; it can also drive the end cover and the printing plate roller located inside it to rotate intermittently, enabling the welding equipment to perform preliminary spot welding on the end cover and the end of the printing plate roller, ensuring that the end cover can be preliminarily connected to the end of the printing plate roller, facilitating the subsequent welding equipment to complete continuous circumferential welding on the end of the printing plate roller in cooperation with the centering clamping mechanism, and further improving the welding efficiency and quality of the welding device.

[0022] To more clearly elaborate on the structural features and functions of the present invention, the following will detail the present invention in conjunction with the attached drawings and specific embodiments. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the first perspective of the printing plate roller welding device provided by the embodiment of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the second perspective of the printing plate roller welding device provided by the embodiment of the present invention.

[0025] Figure 3 For Figure 1 the schematic structural diagram of the moving slide, rotating mechanism, centering clamping mechanism, and centering alignment mechanism in

[0026] Figure 4 For Figure 3 the side view of the schematic structural diagram of the moving slide, rotating mechanism, centering clamping mechanism, and centering alignment mechanism in

[0027] Figure 5 For Figure 3 the schematic structural diagram of the installation component, installation support, centering alignment component, and adjustment component in

[0028] Figure 6 For Figure 5 the schematic structural diagram of the centering alignment component and the adjustment component in

[0029] Figure 7 for Figure 6 Exploded view of the centering and alignment components and the adjustment components.

[0030] Figure 8 for Figure 3 Structural exploded diagram of the centering clamping mechanism.

[0031] Reference numerals: 100 - device body, 200 - welding machine, 300 - welding equipment, 400 - moving slide, 410 - support frame 1, 420 - support frame 2, 500 - rotating mechanism, 510 - rotating motor, 520 - transmission member, 530 - transmission shaft, 600 - centering clamping mechanism, 610 - annular plate 1, 620 - annular rack 1, 630 - gear 1, 640 - pneumatic telescopic member, 650 - clamping plate 1, 660 - mounting groove, 670 - opening , 700-centering and alignment mechanism, 710-installation assembly, 711-annular plate two, 712-annular rack two, 713-gear two, 720-installation support, 730-centering and alignment assembly, 731-support leg one, 732-installation shaft, 733-roller, 734-support leg two, 735-connecting hole, 736-connecting screw, 740-adjustment assembly, 741-connecting shaft, 742-adjustment column, 743-sliding column, 744-splint two, 745-spring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0034] like Figures 1 to 8 As shown, a printing plate roller welding device provided as an embodiment of the present invention includes a device body 100, on which two movable slides 400 are symmetrically and slidably mounted. The two movable slides 400 are connected to each other by a moving device, and a support frame 1 410 and a support frame 2 420 are vertically fixed at both ends of the two movable slides 400. The moving device can simultaneously drive the two movable slides 400 to move closer to or away from each other. A welding machine 200 is slidably mounted on one side of the device body 100. The welding machine 200 is equipped with a regulating mechanism for adjusting the welding position and welding angle of the welding device 300. The regulating mechanism can use a robot arm to achieve multi-dimensional and multi-angle adjustment of the welding device 300. The device also includes:

[0035] A rotating mechanism 500, the rotating mechanism 500 is installed on the moving slide 400, and one end of the rotating mechanism 500 is respectively rotatably connected to the first support frame 410 and the second support frame 420;

[0036] A centering clamping mechanism 600, the centering clamping mechanism 600 is rotatably installed on two second support frames 420, and the two second support frames 420 and the centering clamping mechanism 600 thereon are close to each other. An opening 670 is provided on one side of the centering clamping mechanism 600 and the second support frame 420, and the centering clamping mechanism 600 is connected to one end of the rotating mechanism 500;

[0037] A centering alignment mechanism 700, the centering alignment mechanism 700 includes a mounting component 710, a mounting seat 720, a centering alignment component 730 and an adjustment component 740. The mounting component 710 is rotatably installed on the first support frame 410 and is connected to one end of the rotating mechanism 500. The mounting component 710 is concentric with the centering clamping mechanism 600. The two first support frames 410 and the mounting component 710 thereon are far away from each other. Three mounting seats 720 are circumferentially and equidistantly distributed inside the mounting component 710. A centering alignment component 730 is rotatably installed on each of the three mounting seats 720, and the centering alignment component 730 is inclined to the first support frame 410. Two ends of the centering alignment component 730 respectively extend to the left and right sides of the mounting component 710. One ends of the three centering alignment components 730 are close to each other, and the other ends of the three centering alignment components 730 are far away from each other. An adjustment component 740 is installed at each of the other ends of the three centering alignment components 730 that are far away from each other;

[0038] When welding is required in the axial direction of the printing plate cylinder, the centering clamping mechanisms 600 on the two moving slides 400 can approach each other and centeringly clamp the outer walls at both ends of the printing plate cylinder to ensure that both ends of the printing plate cylinder are in a concentric position, ensure the coaxiality of the printing plate cylinder during welding, improve the welding efficiency and welding quality of the printing plate cylinder. At the same time, ensure that the positions to be welded on the printing plate cylinder are exposed within the overlapping opening 670 of the second support frame 420 and the centering clamping mechanism 600, so that the welding device 300 can weld the printing plate cylinder in the axial direction through the opening 670, improving the welding quality and welding efficiency;

[0039] When the end cap with a roll core needs to be welded integrally with the ends of both sides of the printing plate roll, the two centering and clamping mechanisms 600 release the clamping of the printing plate roll and support it. The centering alignment components 730 and the adjustment components 740 on the two moving sliders 400 approach each other. When the ends of the three centering alignment components 730 on the same moving slider 400 that approach each other come into contact with the roll core simultaneously, the roll core will drive one end of the three centering alignment components 730 to move away from each other simultaneously and complete the deflection operation. One end of the three centering alignment components 730 drives the other ends of their respective components to approach each other, and the other ends of the three centering alignment components 730 drive their respective adjustment components 740 to approach each other. The adjustment components 740 can complete the centering clamping of the outer wall of the printing plate roll by approaching each other, enabling the printing plate roll to be quickly adjusted to a concentric position with the roll core, thereby completing the rapid centering of the printing plate roll and the roll core, ensuring the coaxiality of the printing plate roll and the roll core, reducing manual intervention, shortening the centering time between the roll core and the printing plate roll, improving the welding efficiency of the welding device, and one end of the three centering alignment components 730 can resist the end cap, enabling the end cap to fit with the end of the printing plate roll. The concentricity of the printing plate roll and the roll core can ensure that the outer wall of the end cap can fully and effectively seal the end of the printing plate roll, ensuring the connection quality between the two;

[0040] Since the end of the printing plate roll needs to be welded continuously in a circle, although the three centering alignment components 730 can cooperate with the rotating mechanism 500 to drive the printing plate roll and the roll core to rotate synchronously, they will hinder the full welding of the end of the printing plate roll. Therefore, before the circumferential welding of the end of the printing plate roll, the rotating mechanism 500 drives the mounting component 710 to rotate intermittently. The mounting component 710 drives the centering alignment components 730 and the adjustment components 740 to rotate intermittently through the mounting support 720, enabling the welding device 300 to perform preliminary spot welding on the end cap and the end of the printing plate roll to ensure that the end cap can be preliminarily connected to the end of the printing plate roll; At this time, by changing the distance between the two moving sliders 400, the centering alignment components 730 on the two moving sliders 400 are moved away from each other, so that the end of the printing plate roll and the end cap can be moved outside the centering alignment components 730. The centering and clamping mechanism 600 releases the support state of the printing plate roll and completes the centering clamping of the printing plate roll. The rotating mechanism 500 drives the centering and clamping mechanism 600 to rotate in a circle on the support frame two 420, and the centering and clamping mechanism 600 drives the printing plate roll and the end cap to rotate in a circle, thereby realizing the circumferential continuous welding of the end of the printing plate roll by the welding device 300 and ensuring the welding quality of the end cap and the printing plate roll;

[0041] Moreover, during the welding process, it is not necessary to remove the printing plate roll, and continuous welding can be completed on the end of the axis of the printing plate roll, realizing the versatility of the welding device, shortening the welding time of the printing plate roll, and improving the welding efficiency and welding quality of the welding device.

[0042] In a preferred embodiment, the mobile device preferably adopts a moving structure composed of a servo motor and a double-rotation screw and other components. The double-rotation screw can drive the two moving slides 400 to move closer to or away from each other by rotating, which not only allows the centering clamping mechanism 600 to center and clamp the two ends of the printing plate roller, so that the welding equipment 300 can continuously weld the axial direction of the printing plate roller, but also allows the centering alignment mechanism 700 to complete the centering of the roller core and the printing plate roller, so that the welding equipment 300 can perform preliminary spot welding and circumferential continuous welding on the end of the printing plate roller.

[0043] like Figures 3 to 7 As shown, as a preferred embodiment of the present invention, the centering and alignment assembly 730 includes a leg 1 731, a mounting shaft 732, a roller 733 and a leg 2 734, one end of the leg 1 731 is rotatably mounted on the mounting support 720 through the mounting shaft 732, a torsion spring is installed between the mounting shaft 732 and the inner wall of the mounting assembly 710, a roller 733 is movably installed on the other end of the leg 1 731, and the roller 733 is in contact with the outer wall of the roller core, one end of the leg 2 734 is connected to one end of the leg 1 731, and an adjustment assembly 740 is installed on the other end of the leg 2 734.

[0044] The length of the support leg 731 is smaller than the length of the support leg 2 734, and the ends of the support legs 1 731 and 2 734 that are connected to each other are circumferentially distributed with connecting holes 735. The support leg 2 734 is connected to the support leg 1 731 as a whole through the connecting holes 735 and the connecting screws 736. The connecting screws 736 cooperate with the connecting holes 735 to not only connect the support leg 2 734 and the support leg 1 731 as a whole, but also change the angle between the support leg 2 734 and the support leg 1 731 in the initial state according to actual needs, so that in the process of the support leg 1 731 driving the support leg 2 734 and the adjustment assembly 740 thereon to deflect, the adjustment assembly 740 can fully and effectively contact the outer wall of the printing plate roller, thereby meeting the requirements of fast and accurate centering of different types of roller cores and printing plate rollers, expanding the application range of the welding device, and improving the welding efficiency and welding quality of the welding device.

[0045] In the initial state, the torsion spring drives the mounting shaft 732 to rotate through its own elastic force, causing the entire structure of the first leg 731 and the second leg 734 to tilt toward the first support frame 410. The three rollers 733 on the same movable slide 400 move closer to each other, and the three adjustment assemblies 740 on the same movable slide 400 move away from each other.

[0046] When the roller core is located between the three rollers 733 and its outer walls are in conflict with the outer walls of the three rollers 733, the three rollers 733 can drive the three legs 1 731 to deflect synchronously through the elastic cooperation with the torsion spring, and can also complete the centering clamping of the roller core. The three legs 1 731 drive the three legs 2 734 to deflect synchronously, so that the adjustment components 740 on the three legs 2 734 all move toward the direction close to the outer wall of the printing plate roller and clamp its outer wall. Due to the supporting effect of the centering clamping mechanism 600 on the printing plate roller at this time, the three adjustment components 740 can allow the three to move synchronously through synchronous deflection. The adjustment component 740 completes the centering clamping of the printing plate roller, so that the printing plate roller can be quickly adjusted to a position that is concentric with the roller core, thereby completing the rapid centering of the printing plate roller and the roller core, ensuring the coaxiality of the printing plate roller and the roller core, reducing manual intervention, shortening the centering time of the roller core and the printing plate roller, and improving the welding efficiency of the welding device. In addition, one end of the three centering and alignment components 730 can resist the end cover, so that the end cover can fit with the end of the printing plate roller, and the concentricity of the printing plate roller and the roller core can ensure that the outer wall of the end cover can fully and effectively seal the end of the printing plate roller, ensuring the connection quality between the two.

[0047] like Figures 3 to 7 As shown, as a preferred embodiment of the present invention, the mounting assembly 710 includes an annular plate 2 711, an annular rack 2 712 and a gear 2 713. The annular plate 2 711 is rotatably mounted on the support frame 1 410. The inner wall of the annular plate 2 711 is circumferentially equidistantly fixed with mounting supports 720. An annular rack 2 712 is fixed on the outer wall of one end of the annular plate 2 711. The annular rack 2 712 is engaged with the gear 2 713 rotatably mounted on the support frame 1 410. The gear 2 713 is connected to the rotating mechanism 500.

[0048] When the welding equipment 300 needs to spot weld the end of the printing plate roller, the rotating mechanism 500 drives the gear 2 713 to rotate intermittently, the gear 2 713 drives the annular rack 2 712 and the annular plate 2 711 to rotate intermittently, and the annular plate 2 711 drives the centering and alignment assembly 730 and the adjustment seat assembly to rotate intermittently through the mounting support 720, so that the welding equipment 300 can achieve preliminary spot welding on the end of the printing plate roller, which is convenient for subsequent withdrawal of the centering and alignment assembly 730 for continuous circumferential welding.

[0049] like Figures 3 to 7As shown, as a preferred embodiment of the present invention, the adjustment assembly 740 includes a connecting shaft 741, an adjustment column 742, a sliding column 743, a second clamping plate 744, and a spring 745. The connecting shaft 741 is rotatably installed on the second leg 734. The adjustment column 742 is vertically fixed in the middle of the connecting shaft 741. One end of the adjustment column 742 is vertically slidably installed with the sliding column 743. One end of the sliding column 743 is fixed with the second clamping plate 744. The outer wall of the sliding column 743 is sleeved with the spring 745. The two ends of the spring 745 are respectively connected to the second clamping plate 744 and the adjustment column 742.

[0050] The three second legs 734 drive their respective second clamping plates 744 to move towards the outer wall of the printing plate cylinder at the same time. The three second clamping plates 744 can perform centering clamping on the outer wall of the printing plate cylinder through synchronous movement, so that the printing plate cylinder is concentric with the roller core, ensuring the coaxiality between the two.

[0051] During the movement of the second clamping plate 744, one side of it will first contact the outer wall of the printing plate cylinder. The rotational design of the connecting shaft 741 can help the second clamping plate 744 deflect during the contact with the printing plate cylinder, so that it can effectively contact the outer wall of the printing plate cylinder, thereby increasing the contact area between the two, improving the connection strength between the two, and further improving the coaxiality between the printing plate cylinder and the roller core.

[0052] The spring 745 can buffer the clamping force of the second clamping plate 744, so that while the second clamping plate 744 effectively performs centering clamping on the outer wall of the printing plate cylinder, the three rollers 733 can also effectively perform centering clamping on the outer wall of the roller core, further ensuring the coaxiality between the two.

[0053] In a preferred embodiment, the second clamping plate 744 preferably adopts an arc-shaped plate structure.

[0054] Such as Figure 3 、 Figure 4 and Figure 8As shown, as a preferred embodiment of the present invention, the centering clamping mechanism 600 includes a first annular plate 610, a first annular rack 620, a first gear 630, a pneumatic telescopic member 640, a first clamping plate 650, and a mounting groove 660. The first annular plate 610 is rotatably mounted on the second support frame 420. A first annular rack 620 is fixed on the outer wall of the first annular plate 610. An opening 670 is formed on one side of both the first annular plate 610 and the first annular rack 620. The first gears 630 are symmetrically and rotatably arranged on one side of the second support frame 420. The two first gears 630 are respectively meshed with both sides of the first reversing rack, and the two first gears 630 are both connected to the rotating mechanism 500. The first annular plate 610 is circumferentially and equidistantly provided with mounting grooves 660. A pneumatic telescopic member 640 is vertically mounted in the mounting groove 660. The output end of the pneumatic telescopic member 640 faces the center of the first annular plate 610, and a first clamping plate 650 is fixed on the output end of the pneumatic telescopic member 640.

[0055] The arc length between the meshing points of the first annular rack 620 and the two first gears 630 is greater than the arc length of the opening 670 of the first arc rack. In this way, during the rotation of the first annular rack 620, it can be ensured that at least one first gear 630 can effectively mesh with the first annular rack 620, ensuring the continuous circumferential movement of the first annular rack 620, and further realizing the circumferential continuous welding of the printing plate cylinder.

[0056] When centering and clamping the printing plate cylinder is required, the three pneumatic telescopic members 640 synchronously extend and retract and drive the three first clamping plates 650 to synchronously move towards the direction close to the printing plate cylinder. Due to the principle of three-point contact centering, the three first clamping plates 650 on the two moving sliders 400 can center and clamp the outer walls at both ends of the printing plate cylinder, ensuring that both ends of the printing plate cylinder are in a concentric position, ensuring the coaxiality of the printing plate cylinder during welding, improving the welding efficiency and welding quality of the printing plate cylinder. At the same time, it is ensured that the positions to be welded on the printing plate cylinder are exposed within the range of the overlapping openings 670 on the second support frame 420, the first annular plate 610, and the first annular rack 620, facilitating the welding equipment 300 to weld the printing plate cylinder in the axial direction through the opening 670, improving the welding quality and welding efficiency;

[0057] When continuous welding is required for the end of the printing plate roller, the centering clamping mechanism 600 first releases the support state of the printing plate roller, and then completes the centering clamping of the printing plate roller. The rotating mechanism 500 drives the two first gears 630 to rotate synchronously and in the same direction. The two first gears 630 can drive the first annular plate 610 to continuously rotate on the second support frame 420 through the first annular rack 620, so that the first annular plate 610 drives the printing plate roller and the end cover to rotate circumferentially through the pneumatic telescopic member 640 and the first clamping plate 650, thereby realizing the circumferential continuous welding of the end of the printing plate roller by the welding device 300 and ensuring the welding quality of the end cover and the printing plate roller.

[0058] In a preferred embodiment, the pneumatic telescopic member 640 preferably adopts a pneumatic telescopic cylinder and a telescopic rod;

[0059] The first clamping plate 650 preferably adopts an arc-shaped plate structure.

[0060] As Figures 3 to 8 shown, as a preferred embodiment of the present invention, the rotating mechanism 500 includes a rotating motor 510, a transmission member 520 and a transmission shaft 530. The rotating motor 510 is fixed on the moving slide 400. The transmission shaft 530 is symmetrically rotatably installed on the first support frame 410 and the second support frame 420. One ends of the two transmission shafts 530 are respectively fixedly connected to the two first gears 630. The other end of one transmission shaft 530 is fixedly connected to the second gear 713. The other ends of the two transmission shafts 530 are both connected to the output end of the rotating motor 510 through the transmission member 520.

[0061] The rotating motor 510 drives the transmission shaft 530 to rotate intermittently or continuously through the transmission member 520, so that the transmission shaft 530 can not only drive the second gear 713 to rotate intermittently, thereby driving the printing plate roller located in the centering alignment assembly 730 to rotate intermittently, realizing the preliminary spot welding of the end of the printing plate roller by the welding device 300, but also drive the two first gears 630 to rotate continuously, thereby driving the printing plate roller located inside the centering clamping mechanism 600 to rotate continuously, realizing the circumferential continuous welding of the end of the printing plate roller by the welding device 300, meeting the welding requirements of the printing plate roller and improving the welding efficiency of the printing plate roller.

[0062] In a preferred embodiment, the transmission member 520 preferably adopts a transmission structure composed of three synchronous pulleys and a synchronous belt.

[0063] The working principle of the present invention is:

[0064] When the printing plate roller needs to be welded in the axial direction, the centering clamping mechanisms 600 on the two movable slides 400 can approach each other and center the outer walls of the two ends of the printing plate roller to ensure that the two ends of the printing plate roller are in a concentric position, ensuring the coaxiality of the printing plate roller during welding. At the same time, the position on the printing plate roller to be welded is exposed within the range of the overlapping opening 670 on the support frame 420 and the centering clamping mechanism 600, so that the welding equipment 300 can weld the printing plate roller in the axial direction through the opening 670.

[0065] In the initial state, the torsion spring drives the mounting shaft 732 to rotate through its own elastic force, causing the overall structure of the support leg 1 731 and the support leg 2 734 to tilt toward the support frame 1 410, the three rollers 733 on the same movable slide 400 to approach each other, and the three adjustment assemblies 740 on the same movable slide 400 to move away from each other; when it is necessary to weld the end cap with the roller core to the end portions of the printing plate roller as a whole, the two centering clamping mechanisms 600 release the clamping of the printing plate roller and support it, and the centering alignment assemblies 730 and adjustment assemblies 740 on the two movable slides 400 move toward each other;

[0066] When the roller core is located between the three rollers 733 and its outer walls are in conflict with the outer walls of the three rollers 733, the three rollers 733 can drive the three support legs 1 731 to deflect synchronously through the elastic cooperation with the torsion spring, and can also complete the centering clamping of the roller core. The three support legs 1 731 drive the three support legs 2 734 to deflect synchronously, so that the adjustment components 740 on the three support legs 2 734 all move toward the direction close to the outer wall of the printing plate roller and clamp its outer wall. Due to the supporting effect of the centering clamping mechanism 600 on the printing plate roller at this time, the three adjustment components 740 can complete the centering clamping of the printing plate roller through synchronous deflection, so that the printing plate roller can be quickly adjusted to a position concentric with the roller core, thereby completing the rapid centering of the printing plate roller and the roller core, ensuring the coaxiality of the printing plate roller and the roller core, reducing manual intervention, and shortening the centering time of the roller core and the printing plate roller;

[0067] Since the end of the printing plate roller needs to be circumferentially welded continuously, and although the three centering and alignment assemblies 730 can cooperate with the rotating mechanism 500 to drive the printing plate roller and the roller core to rotate synchronously, they will hinder the sufficient welding of the end of the printing plate roller. Therefore, before the circumferential welding of the end of the printing plate roller is performed, the rotating mechanism 500 drives the second gear 713 to rotate intermittently, and the second gear 713 drives the second ring rack 712 and the second ring plate 711 to rotate intermittently. The second ring plate 711 drives the centering and alignment assemblies 730 and the adjustment seat assembly to rotate intermittently through the mounting support 720, so that the welding equipment 300 can perform preliminary spot welding on the end cap and the end of the printing plate roller, ensuring that the end cap can be preliminarily connected to the end of the printing plate roller.

[0068] At this time, by changing the distance between the two moving sliders 400, the centering and aligning components 730 on the two moving sliders 400 move away from each other, so that the end of the printing plate roller and the end cover can be moved outside the centering and aligning components 730. The centering clamping mechanism 600 first releases the supporting state of the printing plate roller, and then completes the centering and clamping of the printing plate roller. The rotating mechanism 500 drives the two first gears 630 to rotate synchronously and in the same direction. The two first gears 630 can drive the first annular plate 610 to continuously rotate on the second support frame 420 through the first annular rack 620, so that the first annular plate 610 drives the printing plate roller and the end cover to rotate circumferentially through the pneumatic telescopic member 640 and the first clamping plate 650, thereby realizing the circumferential continuous welding of the end of the printing plate roller by the welding device 300 and ensuring the welding quality of the end cover and the printing plate roller;

[0069] And during the welding process, it is not necessary to remove the printing plate roller, and the continuous welding of the end of the axis of the printing plate roller can be completed, realizing the versatility of the welding device and reducing the welding time of the printing plate roller;

[0070] The above is the working principle of the printing plate roller welding device.

[0071] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A printing plate roller welding device, comprising a device main body, on which two moving sliders are symmetrically and slidably installed, and at both ends of each of the two moving sliders, a first support frame and a second support frame are vertically fixed. A welding machine table is slidably installed on one side of the device main body, and welding equipment is installed on the welding machine table. It is characterized in that, Further included are: A rotating mechanism, which is installed on the moving slide, and one end of the rotating mechanism is respectively rotatably connected to the first support frame and the second support frame; A centering clamping mechanism, which is rotatably installed on the two second support frames, and the two second support frames and the centering clamping mechanism on them are close to each other. An opening is provided on one side of the centering clamping mechanism and the second support frame, and the centering clamping mechanism is connected to one end of the rotating mechanism; A centering alignment mechanism, which includes a mounting component, a mounting support, a centering alignment component and an adjustment component. The mounting component is rotatably installed on the first support frame and is connected to one end of the rotating mechanism. The mounting component is concentric with the centering clamping mechanism. The two first support frames and the mounting component on them are far away from each other. Three mounting supports are circumferentially and equidistantly distributed inside the mounting component. A centering alignment component is rotatably installed on each of the three mounting supports, and the centering alignment component is inclined to the first support frame. The two ends of the centering alignment component respectively extend to the left and right sides of the mounting component. One ends of the three centering alignment components are close to each other, and the other ends of the three centering alignment components are far away from each other. An adjustment component is installed at each of the far-away ends of the three centering alignment components.

2. The printing plate roller welding device according to claim 1, characterized in that, The centering alignment component includes a first leg, a mounting shaft, a roller and a second leg. One end of the first leg is rotatably installed on the mounting support through the mounting shaft. A torsion spring is installed between the mounting shaft and the inner wall of the mounting component. A roller is movably installed at the other end of the first leg. The roller is in contact with the outer wall of the roll core. One end of the second leg is connected to one end of the first leg. An adjustment component is installed at the other end of the second leg.

3. The printing plate roller welding device according to claim 2, characterized in that, " 4. The printing plate roller welding device according to claim 2, wherein The length of the first leg is less than that of the second leg. Connecting holes are circumferentially distributed at the connected ends of the first leg and the second leg. The second leg is connected to the first leg as a whole through the connecting holes and connecting screws.

5. The printing plate roller welding device according to claim 2, wherein The mounting component includes a second annular plate, a second annular rack and a second gear. The second annular plate is rotatably installed on the first support frame. The mounting supports are circumferentially and equidistantly fixed on the inner wall of the second annular plate. A second annular rack is fixed on the outer wall of one end of the second annular plate. The second annular rack is meshed with the second gear rotatably installed on the first support frame. The second gear is connected to the rotating mechanism. The adjustment component includes a connecting shaft, an adjustment column, a sliding column, a second clamping plate and a spring. The connecting shaft is rotatably installed on the second leg. An adjustment column is vertically fixed in the middle of the connecting shaft. A sliding column is vertically slidably installed at one end of the adjustment column. A second clamping plate is fixed at one end of the sliding column. A spring is sleeved on the outer wall of the sliding column. The two ends of the spring are respectively connected to the second clamping plate and the adjustment column.

6. The printing plate roller welding device according to claim 1, wherein The centering clamping mechanism includes a first annular plate, a first annular rack, a first gear, a pneumatic telescopic member, a first clamping plate and a mounting groove. The first annular plate is rotatably mounted on the second support frame. A first annular rack is fixed on the outer wall of the first annular plate. An opening is formed on one side of both the first annular plate and the first annular rack. The first gears are symmetrically and rotatably arranged on one side of the second support frame. The two first gears are respectively meshed with both sides of the reversing rack one, and both the two first gears are connected to the rotating mechanism. The first annular plate is circumferentially and equidistantly provided with mounting grooves. The pneumatic telescopic members are vertically mounted in the mounting grooves. The output ends of the pneumatic telescopic members face the center of the first annular plate, and a first clamping plate is fixed on the output ends of the pneumatic telescopic members.

7. The printing plate roller welding device according to claim 6, characterized in that, The arc length between the meshing points of the first annular rack and the two first gears is greater than the arc length of the opening of the arc rack one.

8. The printing plate roller welding device according to claim 6, characterized in that, The rotating mechanism includes a rotating motor, a transmission member and a transmission shaft. The rotating motor is fixed on the moving slide. The transmission shaft is symmetrically and rotatably mounted on the first support frame and the second support frame. One ends of the two transmission shafts are respectively fixedly connected to the two first gears. One end of one transmission shaft is fixedly connected to the second gear. The other ends of the two transmission shafts are both connected to the output end of the rotating motor through the transmission member.

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