A laser straight seam welding apparatus

Abstract

This utility model relates to the field of straight seam welding technology for printing rollers, and more particularly to a laser straight seam welding device, including a positioning cylinder inserted into the printing roller, side positioning plates located on both sides of the positioning cylinder, and a top pressure plate that flattens the gap of the printing roller. The top of the positioning cylinder has a top support surface formed along its length to support the gap of the printing roller. The two side positioning plates can move relative to each other to clamp the printing roller. The top support surface formed along its length on the top of the positioning cylinder can accurately support the gap of the printing roller, and the stable bottom support can reduce the displacement of the printing roller caused by its own weight or external interference. The relative movement of the two side positioning plates to clamp the printing roller effectively restricts the horizontal movement of the printing roller, greatly improving welding accuracy. The top pressure plate can flatten the gap of the printing roller. Before welding, the gap of the printing roller may be uneven; the top pressure plate can apply appropriate pressure to flatten the gap, making the weld seam smoother.

Description

Technical Field

[0001] This utility model relates to the field of straight seam welding technology for printing rollers, and in particular to a laser straight seam welding device. Background Technology

[0002] Printing rollers are further divided into hollow rollers and solid rollers, as well as rollers with and without shafts. They are generally used for plate making. The surface of the roller is copper-plated, and the pattern is engraved by a gravure electronic engraving machine, and then a layer of chromium is plated on it. After completion, it is delivered to the printing plant and is often used for printing on plastic packaging.

[0003] In the process of making hollow printing rollers, ordinary steel billets need to be processed through a series of processes such as rolling, welding, alignment, and copper plating to form the final hollow printing rollers that match the electro-engraving process standards. During the welding process of the steel billets, the operators need to manually and repeatedly use the alignment rail to align the position and weld each time.

[0004] Among them, utility model application number 201821593722.2 discloses an automatic alignment and pressing welding device for printing roller steel billets, including a mounting base, a mounting slide rail and a connecting steel column on the mounting base, an arc welding machine on the mounting slide rail, steel structure arms on both ends of the mounting slide rail, and cylinders mounted on the steel structure arms. The cylinders are correspondingly connected to the two ends of the alignment steel rail, and an insert rod is integrally formed on the connecting steel column. It has high welding precision and high operating efficiency.

[0005] In the above solution, because the formed roller has gaps, during welding, there is only support positioning and no lateral positioning of the gaps, resulting in poor precision during welding. Utility Model Content

[0006] The purpose of this invention is to provide a laser straight seam welding device to address the shortcomings of existing technologies.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A laser straight seam welding device includes a positioning cylinder inserted into a printing roller, side positioning plates located on both sides of the positioning cylinder, and a top pressure plate that flattens the gap of the printing roller. The top of the positioning cylinder is formed with a top support surface along the length direction for supporting the gap of the printing roller. The two side positioning plates can move relative to each other to clamp the printing roller side.

[0009] Furthermore, it also includes a welding platform, which is equipped with a positioning lifting mechanism that drives the positioning cylinder to move up and down. The positioning lifting mechanism includes a first lifting column for supporting the positioning cylinder, and the positioning cylinder is installed on the first lifting column.

[0010] Furthermore, the positioning and lifting mechanism also includes a second lifting column arranged at a distance from the first lifting column, with a column support seat installed on the top of the second lifting column; positioning and lifting cylinders are respectively connected to the bottom of the first lifting column and the bottom of the second lifting column.

[0011] Furthermore: the welding platform includes support worktables located on both sides of the positioning and lifting mechanism. The support worktables are equipped with a first side drive mechanism that drives the side positioning plate to move laterally closer to or further away from the printing roller. The first side drive mechanism includes a first side drive plate and a first lateral telescopic drive member connected to the first side drive plate. The first side drive plate is connected to the side positioning plate.

[0012] Furthermore, the first-side drive mechanism also includes a first-side support guide rail and a first-side sliding seat that is slidably mounted on the first-side support guide rail, the first-side sliding seat being connected to the first-side drive plate.

[0013] Furthermore, the support worktable is also provided with a second side drive mechanism that drives the top pressure plate to move laterally closer to or further away from the printing roller. The second side drive mechanism is located above the first side drive mechanism. The second side drive mechanism includes a second side drive plate and a second lateral telescopic drive member connected to the second side drive plate. The second side drive plate is connected to the top pressure plate.

[0014] Furthermore, the second-side drive mechanism also includes a second-side support guide rail and a second-side sliding seat that is slidably mounted on the second-side support guide rail, and the second-side sliding seat is connected to the second-side drive plate.

[0015] Furthermore: the top pressure plate includes a pressure plate mounting block connected to the second side drive plate, the bottom of the pressure plate mounting block is formed with a pressure plate mounting groove along the length direction, and a plurality of spaced top pressure blocks are detachably mounted in the pressure plate mounting groove.

[0016] Furthermore, the support worktable is also provided with a side drive bracket, which is formed with a first drive groove for installing a first side drive mechanism and a second drive groove for installing a second side drive mechanism.

[0017] Furthermore: a laser welding mechanism is mounted on the top of one of the side drive brackets. The laser welding mechanism includes an X-axis linear module arranged along the length of the side drive bracket. A Y-axis linear module is arranged laterally at the drive end of the X-axis linear module. A Z-axis linear module is arranged longitudinally at the drive end of the Y-axis linear module. A laser welding head is mounted on the drive end of the Z-axis linear module.

[0018] The beneficial effects of this invention are as follows: The top support surface formed along the length of the positioning cylinder can accurately support the gap of the printing roller. This design provides stable bottom support for the printing roller. During welding, stable bottom support can reduce the displacement of the printing roller caused by its own weight or external interference, making the welding process smoother. The design of the side positioning plates further improves the positioning accuracy of the equipment. The two side positioning plates can move relative to each other, clamping the printing roller sideways, effectively limiting the horizontal movement of the printing roller, ensuring that the gap of the printing roller is always in the ideal welding position, and greatly improving the welding accuracy. The top pressure plate can flatten the gap of the printing roller. Before welding, the gap of the printing roller may be uneven, such as wrinkles or protrusions. These defects will affect the continuity and firmness of the weld. The top pressure plate can apply appropriate pressure to flatten the gap, making the weld smoother. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a straight seam welding equipment.

[0020] Figure 2 This is a structural schematic diagram of a straight seam welding equipment from another perspective.

[0021] Figure 3 This is a schematic diagram of one of the supporting worktables.

[0022] Figure 4 This is a schematic diagram of the first-side drive mechanism and the second-side drive mechanism.

[0023] The reference numerals in the figures include:

[0024] 1-Welding platform,

[0025] 10-Positioning lifting mechanism, 11-First lifting column, 12-Second lifting column

[0026] 13-Positioning lifting cylinder, 14-Column support base, 15-Positioning cylinder, 16-Top support surface,

[0027] 2-Support worktable,

[0028] 20-First side drive mechanism, 21-First side drive plate, 22-First lateral telescopic drive component,

[0029] 23-First side support guide rail, 24-First side sliding seat, 25-Side positioning plate,

[0030] 3-Second side drive mechanism,

[0031] 31-Second side drive plate, 32-Second lateral telescopic drive component, 33-Second side support guide rail,

[0032] 34-Second side sliding seat, 35-Top pressure plate, 36-Pressure plate mounting block, 37-Pressure plate mounting groove,

[0033] 38-Top pressing block, 39-Serrated groove,

[0034] 4-Laser welding mechanism

[0035] 41-X-axis linear module, 42-Y-axis linear module, 43-Z-axis linear module, 44-laser welding head, 45-side drive bracket, 46-first drive slot, 47-second drive slot. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figure 1-4 As shown, a laser straight seam welding device includes a positioning cylinder 15 inserted into a printing roller, side positioning plates 25 located on both sides of the positioning cylinder 15, and a top pressure plate 35 that flattens the gap of the printing roller. The top of the positioning cylinder 15 is formed with a top support surface 16 along the length direction for supporting the gap of the printing roller. The two side positioning plates 25 can move relative to each other to clamp the printing roller side.

[0038] The top support surface 16, formed along the length of the top of the positioning cylinder 15, can precisely support the gap of the printing roller. This design provides stable bottom support for the printing roller. During welding, stable bottom support can reduce the displacement of the printing roller caused by its own weight or external interference, making the welding process smoother. The design of the side positioning plates 25 further improves the positioning accuracy of the equipment. The two side positioning plates 25 can move relative to each other, clamping the printing roller sideways, effectively restricting the horizontal movement of the printing roller, ensuring that the gap of the printing roller is always in the ideal welding position, and greatly improving the welding accuracy. The top pressure plate 35 can flatten the gap of the printing roller. Before welding, the gap of the printing roller may be uneven, such as wrinkles, protrusions, etc. These defects will affect the continuity and firmness of the weld. The top pressure plate 35 can apply appropriate pressure to flatten the gap, making the weld smoother.

[0039] Specifically, the laser straight seam welding equipment also includes a welding platform 1, which is equipped with a positioning lifting mechanism 10 that drives the positioning cylinder 15 to move up and down. The positioning lifting mechanism 10 includes a first lifting column 11 for supporting the positioning cylinder 15, and the positioning cylinder 15 is installed on the first lifting column 11. The positioning lifting mechanism 10 also includes a second lifting column 12 arranged at a distance from the first lifting column 11, and a column support seat 14 is installed on the top of the second lifting column 12. Positioning lifting cylinders 13 are respectively connected to the bottom of the first lifting column 11 and the bottom of the second lifting column 12. The positioning cylinder 15 is directly fixedly installed on the first lifting column 11, and the bottom is connected to the positioning lifting cylinder 13. This structure enables precise lifting and adjustment of the positioning cylinder 15. When welding rollers of different specifications or in different states, the height of the top support surface 16 of the positioning cylinder 15 can be flexibly adjusted by controlling the positioning lifting cylinder 13 to ensure that the top support surface 16 always forms a perfect fit with the gap of the roller.

[0040] Meanwhile, the positioning lifting cylinders 13 of the two lifting columns can be adjusted synchronously to ensure that the positioning cylinder 15 remains horizontal during the lifting process, avoiding tilting of the positioning cylinder 15 due to unbalanced support, thereby preventing the roller gap from shifting and effectively reducing the risk of welding deviation caused by unstable support.

[0041] In use, the second lifting column 12 can be lowered under the drive of the positioning lifting cylinder 13, at which time the positioning cylinder 15 can be inserted into the printing roller to realize material feeding; after the material feeding is completed, the second lifting column 12 supports the positioning cylinder 15 under the drive of the positioning lifting cylinder 13, and then the first lifting column 11 and the second lifting column 12 can be raised and lowered synchronously, so that the printing roller can be laterally aligned with the side positioning plate 25, and the gap at the top of the printing roller can be laterally aligned with the top pressure plate 35 for the top pressure plate 35 to flatten it.

[0042] Furthermore, the welding platform 1 includes support worktables 2 located on both sides of the positioning and lifting mechanism 10. Each support worktable 2 is equipped with a first side drive mechanism 20 that moves the side positioning plate 25 laterally closer to or further away from the printing roller. The support worktables 2, located on both sides of the positioning and lifting mechanism 10, provide a stable mounting base for the side positioning plate 25 and the first side drive mechanism 20. This symmetrical layout design ensures that the positioning structures on both sides are subjected to balanced forces during operation.

[0043] Preferably, the first side drive mechanism 20 includes a first side drive plate 21 and a side positioning plate 25 connected to the first side drive plate 21. In the first side drive mechanism 20, the first lateral telescopic drive member 22 is connected to the first side drive plate 21, and directly drives the side positioning plate 25 to move laterally through the telescopic movement of the cylinder, thereby achieving side clamping or loosening of the printing roller.

[0044] Preferably, the first lateral telescopic drive component 2220 of the first side drive mechanism further includes a first side support guide rail 23 and a first side sliding seat 24 slidably mounted on the first side support guide rail 23. The first side sliding seat 24 is connected to the first side drive plate 21. The mating structure of the first side support guide rail 23 and the first side sliding seat 24 further optimizes the movement accuracy of the side positioning plate 25. The first side sliding seat 24 is slidably mounted on the first side support guide rail 23 and connected to the first side drive plate 21, so that the side positioning plate 25 always slides smoothly along the guide rail direction during lateral movement, eliminating the jamming and offset phenomena that may occur in traditional sliding methods.

[0045] Furthermore, the support worktable 2 is also equipped with a second side drive mechanism 3 that drives the top pressure plate 35 to move laterally closer to or away from the printing roller. The second side drive mechanism 3 is located above the first side drive mechanism 20. The second side drive mechanism 3 includes a second side drive plate 31 and a second lateral telescopic drive member 32 connected to the second side drive plate 31. The second side drive plate 31 is connected to the top pressure plate 35. The second lateral telescopic drive member 32 in the second side drive mechanism 3 is connected to the second side drive plate 31 and directly drives the top pressure plate 35 to move laterally closer to or away from the printing roller. The second side drive mechanism 3 is located above the first side drive mechanism 20, forming an upper and lower drive system. This allows the lateral clamping of the printing roller by the side positioning plate 25 and the flattening of the gap by the top pressure plate 35 to be performed independently yet in coordination. After the side positioning plate 25 completes the lateral positioning of the printing roller through the first side drive mechanism 20, the top pressure plate 35 can be precisely moved above the gap and apply pressure through the second side drive mechanism 3. The actions of the two are independent and synchronized, ensuring that the printing roller is stably clamped laterally while the gap is effectively flattened. This ensures the preparation accuracy before welding from both the lateral positioning and longitudinal gap pressing dimensions, greatly improving the stability of the overall welding quality. By adjusting the stroke of the second lateral telescopic drive component 32, the lateral movement range of the top pressure plate 35 can be flexibly changed to adapt to the gap flattening requirements of printing rollers with different widths and diameters.

[0046] Preferably, the second-side drive mechanism 3 further includes a second-side support guide rail 33 and a second-side sliding seat 34 slidably mounted on the second-side support guide rail 33, the second-side sliding seat 34 being connected to the second-side drive plate 31. The cooperative structure of the second-side support guide rail 33 and the second-side sliding seat 34 effectively ensures the stability and straightness of the lateral movement of the top pressure plate 35.

[0047] Preferably, both the first lateral telescopic drive member 22 and the second lateral telescopic drive member 32 are screw drive mechanisms. The screw drive mechanism is provided with a drive end, which can move along the length direction of the screw drive mechanism under the drive of the motor to realize telescopic movement.

[0048] Preferably, both the first lateral telescopic drive member 22 and the second lateral telescopic drive member 32 are telescopic cylinders.

[0049] The top pressure plate 35 includes a pressure plate mounting block 36 connected to the second side drive plate 31. The bottom of the pressure plate mounting block 36 has a pressure plate mounting groove 37 formed along its length. Multiple spaced-apart top pressure blocks 38 are detachably mounted in the pressure plate mounting groove 37. The bottom surface of each top pressure block 38 has a serrated groove 39 that rubs against the printing roller. The pressure plate mounting block 36, connected to the second side drive plate 31, provides a stable and precise positioning base for the installation of the top pressure blocks 38 through the pressure plate mounting groove 37 formed along its length. This groove-type installation structure ensures that the top pressure blocks 38 can be precisely aligned along their length during installation, avoiding displacement of the pressure seam position due to installation deviations.

[0050] Preferably, the top pressure blocks 38 of the support worktables 2 on both sides are arranged in an alternating manner. This design can further improve the stability and accuracy of flattening the printing roller.

[0051] Preferably, both the top pressure block 38 and the pressure plate mounting groove 37 are formed with connection holes, which can be detached by screws engaging with the connection holes. The top pressure block 38 is detachably installed in the pressure plate mounting groove 37. This design brings significant flexibility in use and convenience in maintenance to the equipment.

[0052] The supporting worktable 2 is also equipped with a side drive bracket 45, which has a first drive groove 46 for mounting the first side drive mechanism 20 and a second drive groove 47 for mounting the second side drive mechanism 3. The first drive groove 46 and the second drive groove 47 formed on the side drive bracket 45 provide a precise positioning reference for the installation of the first side drive mechanism 20 and the second side drive mechanism 3. The first drive groove 46 is specifically used to install the first side drive mechanism 20, and the second drive groove 47 is used to install the second side drive mechanism 3. This partitioned design ensures that the installation positions of the two drive mechanisms on the supporting worktable 2 meet the preset spatial layout requirements. Compared with the traditional distributed installation method, the groove installation structure can effectively limit the lateral and longitudinal displacement of the drive mechanism and avoid the deviation of the movement trajectory of the side positioning plate 25 and the top pressure plate 35 due to installation deviation.

[0053] When the first lateral telescopic drive member 22 drives the side positioning plate 25 to clamp the printing roller, the resulting reaction force can be transmitted to the side drive bracket 45 through the first drive groove 46, and then distributed by the bracket as a whole to the support worktable 2, thus avoiding deformation of the local structure due to force concentration.

[0054] One of the side drive brackets 45 has a laser welding mechanism 4 mounted on its top. The laser welding mechanism 4 includes an X-axis linear module 41 arranged along the length of the side drive bracket 45, which is parallel to and spaced apart from the printing roller. A transversely arranged Y-axis linear module 42 is mounted at the drive end of the X-axis linear module 41, and a longitudinally arranged Z-axis linear module 43 is mounted at the drive end of the Y-axis linear module 42. A laser welding head 44 is mounted at the drive end of the Z-axis linear module 43. The three-dimensional drive system composed of the X-axis linear module 41, Y-axis linear module 42, and Z-axis linear module 43 provides the laser welding head 44 with comprehensive and precise motion control capabilities. The driving method of the three-dimensional linear module features smooth movement and high positioning accuracy. Compared to traditional mechanical transmission mechanisms, the linear module, driven by a servo motor and combined with high-precision guide rails and ball screws, can achieve micron-level positioning accuracy and stable movement speed.

[0055] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0056] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A laser straight seam welding device, characterized in that: It includes a positioning cylinder inserted into the printing roller, side positioning plates located on both sides of the positioning cylinder, and a top pressure plate that flattens the gap of the printing roller. The top of the positioning cylinder has a top support surface formed along the length direction to support the gap of the printing roller. The two side positioning plates can move relative to each other to clamp the printing roller side.

2. The laser straight seam welding equipment according to claim 1, characterized in that: It also includes a welding platform, which is equipped with a positioning lifting mechanism that drives the positioning cylinder to move up and down. The positioning lifting mechanism includes a first lifting column for supporting the positioning cylinder, and the positioning cylinder is installed on the first lifting column.

3. The laser straight seam welding equipment according to claim 2, characterized in that: The positioning and lifting mechanism also includes a second lifting column arranged at a distance from the first lifting column, and a column support seat is installed on the top of the second lifting column; positioning and lifting cylinders are respectively connected to the bottom of the first lifting column and the bottom of the second lifting column.

4. The laser straight seam welding equipment according to claim 2, characterized in that: The welding platform includes support worktables located on both sides of the positioning and lifting mechanism. The support worktables are equipped with a first side drive mechanism that drives the side positioning plate to move laterally closer to or away from the printing roller. The first side drive mechanism includes a first side drive plate and a first lateral telescopic drive member connected to the first side drive plate. The first side drive plate is connected to the side positioning plate.

5. A laser straight seam welding device according to claim 4, characterized in that: The first side drive mechanism further includes a first side support guide rail and a first side sliding seat slidably mounted on the first side support guide rail, and the first side sliding seat is connected to the first side drive plate.

6. The laser straight seam welding equipment according to claim 4, characterized in that: The support worktable is also provided with a second side drive mechanism that drives the top pressure plate to move laterally closer to or away from the printing roller. The second side drive mechanism is located above the first side drive mechanism. The second side drive mechanism includes a second side drive plate and a second lateral telescopic drive member connected to the second side drive plate. The second side drive plate is connected to the top pressure plate.

7. A laser straight seam welding device according to claim 6, characterized in that: The second side drive mechanism also includes a second side support rail and a second side sliding seat that is slidably mounted on the second side support rail, and the second side sliding seat is connected to the second side drive plate.

8. A laser straight seam welding device according to claim 7, characterized in that: The top pressure plate includes a pressure plate mounting block connected to the second side drive plate. The bottom of the pressure plate mounting block is formed with a pressure plate mounting groove along the length direction. Multiple top pressure blocks are detachably mounted in the pressure plate mounting groove.

9. A laser straight seam welding device according to claim 6, characterized in that: The support workbench is also provided with a side drive bracket, which has a first drive groove for installing a first side drive mechanism and a second drive groove for installing a second side drive mechanism.

10. A laser straight seam welding device according to claim 9, characterized in that: One of the side drive brackets is equipped with a laser welding mechanism on its top. The laser welding mechanism includes an X-axis linear module arranged along the length of the side drive bracket. A Y-axis linear module is arranged laterally at the drive end of the X-axis linear module. A Z-axis linear module is arranged longitudinally at the drive end of the Y-axis linear module. A laser welding head is installed at the drive end of the Z-axis linear module.

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