A welding device for the weld seam of a printing plate cylinder

Abstract

The present invention discloses a weld welding device for a printing plate cylinder, belonging to the field of arc welding. It includes a bottom plate. Four brackets are fixed on the upper surface of the bottom plate. The tops of the four brackets are jointly fixed with a top plate. A slideway is penetrated and opened on the upper surface of the top plate. A slide seat is slidably connected inside the slideway. An arc welding torch is arranged inside the slide seat. Four hydraulic rods are fixed on the upper surface of the bottom plate. The tops of the hydraulic rods are fixed with lifting frames. The four lifting frames are divided into two groups in the front and back; through the setting of the coiling plate positioning mechanism, the present invention can effectively avoid the shaking of the workpiece during the welding process, greatly improve the welding quality, and contribute to the formation of high-quality welds; and it can adapt to coiling plate workpieces of different diameters, lengths and sizes; by driving the screw rod two to rotate through the motor one, a series of components such as the pry bar and the screw block are driven to move, and the outer movement and expansion or inner contraction of the support plate can be realized to adapt to workpieces with different inner diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of arc welding, and particularly to a weld welding device for a printing plate cylinder. Background Art

[0002] In the field of manufacturing printing plate cylinders, the weld quality directly affects the performance of the plate cylinder and the printing effect. Traditional welding devices may not be able to meet the requirements of high-precision and high-quality welding, and are prone to problems such as uneven welds, welding defects caused by workpiece shaking, and inability to adapt to workpieces of different sizes, which affect the stability and printing quality of the printing plate cylinder during the printing process.

[0003] Traditional welding methods and devices have deficiencies in terms of operation convenience, welding speed, and flexibility of angle adjustment. When welding workpieces of different sizes, a large amount of time may be required for adjustment, and it is difficult to ensure that the best welding angle can be selected each time, which affects the overall production efficiency;

[0004] Therefore, there is a lack of a weld welding device for a printing plate cylinder to solve the above problems. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a weld welding device for a printing plate cylinder, which solves the problems raised in the above background art.

[0006] Technical Solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a weld welding device for a printing plate cylinder includes a bottom plate. Four brackets are fixed on the upper surface of the bottom plate. The tops of the four brackets are jointly fixed with a top plate. A slideway is penetrated and opened on the upper surface of the top plate. A slide seat is slidably connected inside the slideway. An arc welding torch is arranged inside the slide seat. Four hydraulic rods are fixed on the upper surface of the bottom plate. The tops of the hydraulic rods are fixed with lifting frames. The four lifting frames are divided into two groups in the front and back. A support cylinder is rotatably connected between every two lifting frames in each group. A plate cylinder coil workpiece is arranged above the two support cylinders. A coil plate positioning mechanism is arranged inside the plate cylinder coil workpiece.

[0007] Further, the coiling plate positioning mechanism includes a middle roller, a sliding cylinder is sleeved on the outer surface of the middle roller, four first through grooves are formed in the right side of the outer surface of the middle roller, a first inner groove is formed in the middle roller between the four first through grooves, the right end of the first inner groove extends to the right side of the middle roller, a toothed rod is slidably connected inside the first inner groove, four second through grooves are formed through the outer surface of the sliding cylinder, a push bar is slidably connected inside the second through groove adjacent to the first through groove, the four push bars are fixedly connected to the left end of the toothed rod, a tension spring is fixedly connected between the left end of the toothed rod and the first inner groove, a plurality of tooth racks are fixed to the right end of the middle roller, a gear is rotatably connected to the inner side of the tooth rack, a plurality of tooth grooves are formed on the outer surface of the toothed rod and the inner surface of the sliding cylinder, and the sliding cylinder and the toothed rod are in transmission connection through the gear and the tooth grooves. Four third through grooves are formed in the left side of the outer surface of the middle roller, a second inner groove is formed in the middle roller between the four third through grooves, a first motor is fixed to the left end of the middle roller, the right end of the output shaft of the first motor penetrates to the inside of the second inner groove and is fixed with a second screw rod, a screw block is threadedly connected to the outer surface of the second screw rod, four pry bars are rotatably connected to the outer surface of the screw block, the pry bars are located inside the third through grooves, a movable groove is formed through the inside of the pry bar, a movable rod is movably connected inside the movable groove, the movable rod is fixedly connected to the third through groove, four fixed cylinders are fixed to the left side of the outer surface of the middle roller, a telescopic rod is slidably connected inside the fixed cylinder, a support plate is fixed to the end of the telescopic rod away from the middle roller, four rotating grooves are formed on the outer surface of the sliding cylinder, and a plurality of connecting rods are rotatably connected between the inner side of the support plate and the inside of the rotating groove.

[0008] Further, two support rods are fixed to the lower part of the right side of the outer surface of the middle roller, the two support rods are respectively slidably connected to the inside of the two lower second through grooves, a support plate is integrally formed at the bottom ends of the support rods, and the bottom of the support plate is fixedly connected to the bottom plate.

[0009] Further, an elastic metal plate is fixed to the outer surface of the support plate, and the outer surface of the elastic metal plate is attached to the inner surface of the plate roller coiling workpiece.

[0010] Further, two second motors are fixed to the right side of the top plate, the left ends of the output shafts of the second motors penetrate to the inside of the slideway and are fixed with first screw rods, and the two first screw rods are both threadedly connected to the slide block.

[0011] Further, the outer surfaces of the two support cylinders are both attached to the lower part of the outer surface of the plate roller coiling workpiece.

[0012] Further, the left sides of the four push bars are all attached to the right side of the plate roller coiling workpiece, and the right sides of the outer surfaces of the four pry bars are all attached to the left side of the plate roller coiling workpiece.

[0013] Furthermore, a weld seam is provided at the top of the plate roll workpiece, and the weld seam is located below the slideway and above the elastic metal plate above. An anti-sticking coating is provided on the outer surface of the elastic metal plate.

[0014] The beneficial effects of a weld seam welding device for a printing plate roll according to the present invention are as follows:

[0015] (1). By providing a plate rolling positioning mechanism, the present invention can effectively prevent the workpiece from shaking during the welding process, greatly improving the welding quality and helping to form high-quality weld seams; and it can be adapted to plate roll workpieces with different diameters, lengths and sizes. By driving the screw rod II to rotate through the motor I, a series of components such as the pry bar and the screw block are driven to move, and the outer expansion or inner contraction of the support plate can be realized to adapt to workpieces with different inner diameters.

[0016] (2). By arranging the elastic metal plate and the support plate at the bottom of the weld seam, the present invention can support the weld seam, prevent the metal at the weld seam from falling after melting through during welding, and ensure the integrity of the weld seam. In addition, during the welding process, it can provide support for the workpiece, reduce the local large deformation caused by the concentration of welding heat, and is beneficial to ensuring the shape accuracy of the plate roll workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the drawings and specific implementation methods.

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic cross-sectional structural diagram of the present invention;

[0020] Figure 3 is a schematic structural diagram of the plate rolling positioning mechanism in the present invention;

[0021] Figure 4 is a schematic structural diagram of the sliding cylinder in the present invention;

[0022] Figure 5 is a schematic structural diagram of the middle roll and the support plate in the present invention;

[0023] Figure 6 is the present invention Figure 5 of the schematic cross-sectional structural diagram;

[0024] Figure 7 is a schematic structural diagram of the middle roll in the present invention;

[0025] Figure 8 is a schematic right view structural diagram of the present invention;

[0026] Figure 9 is a schematic left view structural diagram of the present invention.

[0027] In the figure: 1, bottom plate; 2, bracket; 3, top plate; 4, slideway; 5, slide block; 6, arc welding torch; 7, first screw rod; 8, hydraulic rod; 9, lifting frame; 10, support cylinder; 11, plate roller rolling workpiece; 12, rolling plate positioning mechanism; 13, middle roller; 14, sliding cylinder; 15, first through groove; 16, first inner groove; 17, rack; 18, push bar; 19, tension spring; 20, second through groove; 21, support rod; 22, support plate; 23, tooth frame; 24, gear; 25, tooth groove; 26, third through groove; 27, second inner groove; 28, first motor; 29, second screw rod; 30, screw block; 31, pry bar; 32, movable groove; 33, movable rod; 34, fixed cylinder; 35, telescopic rod; 36, support plate; 37, rotating groove; 38, connecting rod; 39, elastic metal plate; 40, second motor. Specific implementation mode

[0028] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0029] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0030] Referring to Figures 1-9 , a welding device for the weld seam of a printing plate roller, includes a bottom plate 1. Four brackets 2 are fixed on the upper surface of the bottom plate 1. The tops of the four brackets 2 are jointly fixed with a top plate 3. A slideway 4 is penetrated and opened on the upper surface of the top plate 3. A slide block 5 is slidably connected inside the slideway 4. An arc welding torch 6 is arranged inside the slide block 5. Four hydraulic rods 8 are fixed on the upper surface of the bottom plate 1. The tops of the hydraulic rods 8 are fixed with a lifting frame 9. The four lifting frames 9 are divided into two groups before and after, and a support cylinder 10 is rotatably connected between every two lifting frames 9 in each group. Above the two support cylinders 10, there is jointly provided a plate roller rolling workpiece 11. A rolling plate positioning mechanism 12 is arranged inside the plate roller rolling workpiece 11. The rolling plate positioning mechanism 12 positions and supports the plate roller rolling workpiece 11, and welds the weld seam of the plate roller rolling workpiece 11 through the arc welding torch 6 that can be displaced horizontally.

[0031] Referring to Figures 1-9The plate rolling positioning mechanism 12 includes a middle roller 13, a slide cylinder 14 is sleeved on the outer surface of the middle roller 13, four through grooves 15 are opened on the right side of the outer surface of the middle roller 13, an inner groove 16 is opened inside the middle roller 13 between the four through grooves 15, the right end of the inner groove 16 extends to the right side of the middle roller 13, a gear rod 17 is slidably connected inside the inner groove 16, four through grooves 20 are opened on the outer surface of the slide cylinder 14, and the through grooves 20 and the adjacent through grooves 15 are connected. There are push bars 18 slidably connected inside, and the four push bars 18 are fixedly connected to the left end of the gear rod 17. A tension spring 19 is fixed between the left end of the gear rod 17 and the inner groove 16. A plurality of gear racks 23 are fixed to the right end of the middle roller 13. A gear 24 is rotatably connected to the inner side of the gear rack 23. A plurality of tooth grooves 25 are provided on the outer surface of the gear rod 17 and the inner surface of the slide cylinder 14. The slide cylinder 14 and the gear rod 17 are connected by the gear 24 and the tooth groove 25. Four through grooves 3 26 are provided on the left side of the surface, and an inner groove 27 is provided inside the middle roller 13 between the four through grooves 3 26. A motor 1 28 is fixed to the left end of the middle roller 13, and the right end of the output shaft of the motor 1 28 passes through the inner groove 27 and is fixed with a screw 29. A screw block 30 is threadedly connected to the outer surface of the screw block 30, and four pry bars 31 are rotatably connected to the outer surface of the screw block 30. The pry bars 31 are located in the through grooves 3 26, and a movable groove 32 is provided inside the pry bars 31, and a movable rod 33 is movably connected inside the movable groove 32, and the movable rod 33 is fixedly connected to the through grooves 3 26. Four fixed cylinders 34 are fixed to the left side of the outer surface of the middle roller 13, and a telescopic rod 35 is slidably connected inside the fixed cylinder 34, and a support plate 36 is fixed to the end of the telescopic rod 35 away from the middle roller 13. Four rotating grooves 37 are provided on the outer surface of the sliding cylinder 14, and a plurality of connecting rods 38 are rotatably connected to the inner side of the support plate 36 and the rotating groove 37;

[0032] During use, according to the diameter of the plate roller workpiece 11, the hydraulic rod 8 is controlled to adjust the height of the two support cylinders 10. The plate roller workpiece 11 is placed on the support cylinders 10 and outside the plate rolling positioning mechanism 12. The first motor 28 is controlled to operate, causing the second screw 29 to rotate. The screw block 30 moves leftward, driving the pry bar 31 to rotate outward with the fixed movable rod 33 as the center, and the pry bar 31 slides out and extends outward through the movable slot 32 and the movable rod 33, so that the pry bar 31 contacts the left side of the plate roller workpiece 11. Under the continuous rotation of the pry bar 31, the plate roller workpiece 11 is pushed to move rightward, causing the right end of the plate roller workpiece 11 to push the push bar 18 and the rack 17 to move rightward. When the rack 17 moves rightward, under the transmission of the gear 24, the sliding cylinder 14 slides leftward, and under the push of the connecting rod 38, the four support plates 36 move outward and expand to contact the inner surface of the plate roller workpiece 11, thereby supporting and fixing the plate roller workpiece 11 to prevent it from shaking left and right, front and back, up and down during the welding process, improving the welding quality, and it can be adapted to plate roller workpieces 11 with different diameters, lengths and sizes for use; after use, by controlling the first motor 28, the second screw 29 is reversed, causing the screw block 30 to move rightward, thereby driving the pry bar 31 to rotate and retract, making its left end close to the left end of the middle roller 13 and no longer blocking the left side of the plate roller workpiece 11.

[0033] Refer to Figures 2-3 , on the right side of the outer surface of the middle roller 13 at the lower part, two support rods 21 are fixed. The two support rods 21 are respectively slidably connected to the inside of the two second through slots 20 below. The bottom ends of the support rods 21 are integrally formed with a support plate 22. The bottom of the support plate 22 is fixedly connected to the bottom plate 1. The support rods 21 and the support plate 22 support the plate rolling positioning mechanism 12.

[0034] Refer to Figures 1-9 , an elastic metal plate 39 is fixed on the outer surface of the support plate 36. The outer surface of the elastic metal plate 39 is attached to the inner surface of the plate roller workpiece 11. The elastic metal plate 39 has a certain elasticity on both sides. When encountering the inner arc surface of the plate roller workpiece 11 with different inner diameters, the elastic metal plate 39 deforms under the extrusion of the support plate 36 and the inner wall of the plate roller workpiece 11, so that the elastic metal plate 39 can better fit the inner wall of the plate roller workpiece 11.

[0035] Refer to Figures 1-2 , on the right side of the top plate 3, two second motors 40 are fixed. The left end of the output shaft of the second motor 40 penetrates into the slideway 4, and a first screw 7 is fixed. Both of the two first screws 7 are threadedly connected to the slide block 5. When the second motor 40 operates to rotate the first screw 7, the slide block 5 drives the arc welding torch 6 to move left and right along the slideway 4 to perform welding operations on the horizontal weld.

[0036] Refer to Figures 8-9, the outer surfaces of both support cylinders 10 are in contact with the lower part of the outer surface of the plate roll workpiece 11. The support cylinders 10 support the plate roll workpiece 11, and can assist the plate roll workpiece 11 to rotate when being placed, so that the weld seam is located below the arc welding torch 6 to select a better welding angle for operation.

[0037] Refer to Figure 2 , the left sides of the four push bars 18 are in contact with the right side of the plate roll workpiece 11, and the right outer surfaces of the four pry bars 31 are in contact with the left side of the plate roll workpiece 11. When the pry bars 31 rotate, they will push against the left side of the plate roll workpiece 11, causing the plate roll workpiece 11 to move to the right. And when the right end of the plate roll workpiece 11 is pushed, it will push the push bar 18 to move to the right, so that the subsequent mechanism can be driven to operate.

[0038] Refer to Figures 2-9 , there is a weld seam on the top of the plate roll workpiece 11. The weld seam is located below the slideway 4 and above the elastic metal plate 39 on the upper side. An anti-sticking coating is provided on the outer surface of the elastic metal plate 39 to reduce the welding affinity between the elastic metal plate 39 and the plate roll workpiece 11; the uppermost elastic metal plate 39 and the support plate 36 can support the bottom of the weld seam, prevent the metal at the weld seam from falling after melting through during welding, and ensure the integrity of the weld seam. Moreover, during welding, due to the concentrated heat, local large deformation may occur in the plate roll workpiece 11. The elastic metal plate 39 and the support plate 36 can play a role in supporting and reducing deformation.

[0039] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A welding device for a printing plate roller, comprising a bottom plate (1), characterized in that: Four brackets (2) are fixed on the upper surface of the bottom plate (1), and a top plate (3) is commonly fixed on the top of the four brackets (2). A slideway (4) is opened through the upper surface of the top plate (3), and a slide seat (5) is slidably connected inside the slideway (4). An arc welding torch (6) is arranged inside the slide seat (5). Four hydraulic rods (8) are fixed on the upper surface of the bottom plate (1), and a lifting frame (9) is fixed on the top of the hydraulic rod (8). The four lifting frames (9) are divided into two groups front and back, and a support cylinder (10) is commonly rotatably connected between the two lifting frames (9) in each group. A plate roller rolling workpiece (11) is commonly arranged above the two support cylinders (10), and a plate rolling positioning mechanism (12) is arranged inside the plate roller rolling workpiece (11); The plate rolling positioning mechanism (12) comprises a middle roller (13), the outer surface of the middle roller (13) is sleeved with a slide tube (14), the outer surface of the middle roller (13) is provided with four through grooves (15) on the right side, the inner part of the middle roller (13) is provided with an inner groove (16) between the four through grooves (15), the right end of the inner groove (16) extends to the right side of the middle roller (13), the inner part of the inner groove (16) is slidably connected with a gear rod (17), the outer surface of the slide tube (14) is provided with four through grooves (20), the through grooves (20) and the adjacent through grooves (15) are connected to each other. A push bar (18) is slidably connected inside, and the four push bars (18) are fixedly connected to the left end of the toothed rod (17). A tension spring (19) is fixed between the left end of the toothed rod (17) and the inner groove (16). A plurality of tooth racks (23) are fixed to the right end of the middle roller (13), and a gear (24) is rotatably connected to the inner side of the tooth rack (23). The outer surface of the toothed rod (17) and the inner surface of the slide cylinder (14) are provided with a plurality of tooth grooves (25). The slide cylinder (14) and the toothed rod (17) are connected to each other through the gear (24) and the tooth grooves (25). The left side of the outer surface of the middle roller (13) is provided with four through grooves three (26), and the inside of the middle roller (13) is provided with an inner groove two (27) located between the four through grooves three (26). A motor one (28) is fixed to the left end of the middle roller (13), and the right end of the output shaft of the motor one (28) passes through the inside of the inner groove two (27) and is fixed with a screw rod two (29), and the outer surface of the screw rod two (29) is threadedly connected with a screw block (30), and the outer surface of the screw block (30) is rotatably connected with four pry bars (31), and the pry bars (31) are located inside the through groove three (26), and the inside of the pry bars (31) passes through A movable groove (32) is penetrated and a movable rod (33) is movably connected inside the movable groove (32), and the movable rod (33) is fixedly connected to the through groove three (26). Four fixed cylinders (34) are fixed on the left side of the outer surface of the middle roller (13), and a telescopic rod (35) is slidably connected inside the fixed cylinder (34). A support plate (36) is fixed to the end of the telescopic rod (35) away from the middle roller (13). Four rotating grooves (37) are opened on the outer surface of the slide cylinder (14), and a plurality of connecting rods (38) are connected to the inner side of the support plate (36) and the inside of the rotating groove (37) for common rotation.

2. A welding device for a welding seam of a printing plate roller according to claim 1, characterized in that: Two support rods (21) are fixed at the bottom on the right side of the outer surface of the middle roller (13), and the two support rods (21) are respectively slidably connected to the inside of the two through grooves (20) below, and the bottom ends of the support rods (21) are integrally formed with a support plate (22), and the bottom of the support plate (22) is fixedly connected to the bottom plate (1).

3. A welding device for a welding seam of a printing plate roller according to claim 1, characterized in that: An elastic metal plate (39) is fixed to the outer surface of the support plate (36), and the outer surface of the elastic metal plate (39) is in contact with the inner surface of the plate rolling workpiece (11).

4. A welding device for a welding seam of a printing plate roller according to claim 1, characterized in that: Two motors 2 (40) are fixed on the right side of the top plate (3). The left end of the output shaft of the motor 2 (40) passes through the interior of the slideway (4) and is fixed with a screw rod 1 (7). Both screw rods 1 (7) are threadedly connected to the slide seat (5).

5. The welding device for a welding seam of a printing plate roller according to claim 1, characterized in that: The outer surfaces of the two support cylinders (10) are both in contact with the lower outer surface of the plate rolling workpiece (11).

6. A welding device for a welding seam of a printing plate roller according to claim 1, characterized in that: The left sides of the four push strips (18) are all in contact with the right side of the plate roller rolling workpiece (11), and the right sides of the outer surfaces of the four pry bars (31) are all in contact with the left side of the plate roller rolling workpiece (11).

7. A welding device for a welding seam of a printing plate roller according to claim 3, characterized in that: A weld is provided on the top of the plate rolling workpiece (11), the weld is located below the slideway (4) and above the elastic metal plate (39) above, and an anti-stick coating is provided on the outer surface of the elastic metal plate (39).

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