Welding device of roll net welding machine

Abstract

The technical scheme belongs to the technical field of roll net welding equipment, and particularly relates to a welding device of a roll net welding machine. The feeding and discharging mechanism is mounted beside the rack; the supporting and rotating mechanism is mounted on the rack; the pressing mechanism is mounted on the rack and is used for pressing the screen cloth on the central pipe; the welding mechanism is mounted on the rack and is used for welding the screen cloth to the central pipe; the supporting and rotating mechanism comprises a supporting assembly and a rotating assembly. The supporting assembly comprises a fifth supporting frame, a second supporting frame, a third supporting frame and a fourth supporting frame, the supporting rods are rotationally arranged on the fifth supporting frame; the feeding and discharging mechanism is used for feeding and discharging of the central pipe, the pressing mechanism presses one end of the screen cloth on the central pipe, the welding mechanism welds one end of the screen cloth on the central pipe, then the supporting rotating mechanism enables the screen cloth to be wound on the central pipe, and finally the welding mechanism welds the other end of the screen cloth on the central pipe. And the screen cloth does not need to be manually wound, so that the production efficiency and the production quality are improved.

Description

Technical Field

[0001] This technical solution relates to the field of wire mesh welding equipment technology, specifically to a welding device for a wire mesh welding machine. Background Technology

[0002] In the process of oil and gas drilling and production, screen pipes are usually used for sand control to prevent sand from being produced in oil and gas wells, which could damage casing and equipment and reduce production.

[0003] For example, Chinese patent CN202110256197.5 discloses a sand-control screen pipe and its application, and Chinese patent CN200620012375.0 discloses a multi-layer stainless steel metal mesh sand-control screen pipe. These screen pipes generally include an inner central pipe (also called an inner sheath or base pipe) and a mesh cloth (including an inner drainage mesh and a variable precision composite sand-blocking layer, or a metal mesh sand-control screen sleeve) wrapped around the outside of the central pipe.

[0004] However, there are still some shortcomings in the existing screen tube production process: it is necessary to manually weld one side of the cut mesh to the central tube, then rotate the central tube to make the mesh roll around the central tube, and then use a welding device to weld the other side of the mesh to the central tube to achieve the welding of the mesh to the central tube. This is time-consuming and labor-intensive, and the labor cost is high, the welding quality and efficiency are low, which affects the production progress. Summary of the Invention

[0005] The purpose of this technical solution is to provide a welding device for a wire mesh welding machine. The central tube is fed to the support and rotating mechanism by the loading and unloading mechanism, and then the pressing mechanism presses one side of the wire mesh onto the central tube. The support and rotating mechanism drives the central tube to rotate, so that the wire mesh is wrapped around the central tube. The welding mechanism realizes the welding of the wire mesh, which improves the problem of low production efficiency and high production cost caused by manually winding the wire mesh onto the central tube and welding it.

[0006] The purpose of this technical solution is achieved as follows:

[0007] A welding device for a wire mesh welding machine, used to wind and weld wire mesh onto a central tube, comprising:

[0008] frame;

[0009] The loading and unloading mechanism is installed on the side of the frame and is used to load and unload the central tube;

[0010] A support rotation mechanism, which is mounted on the frame, is used to store the central tube transported by the loading and unloading mechanism;

[0011] A pressing mechanism, which is mounted on the frame, is used to press the side end of the mesh fabric transported from the previous station onto the central tube on the supporting rotation mechanism;

[0012] A welding mechanism, mounted on the frame, is used to weld the mesh fabric to the outside of the central tube supporting the rotating mechanism;

[0013] The support rotation mechanism includes:

[0014] A support assembly, mounted on the frame, is used to store the central tube;

[0015] A rotating assembly, mounted on the frame, is used to drive the central tube to rotate on the support assembly;

[0016] The support assembly includes:

[0017] Support frame five is mounted on the frame;

[0018] Several support rods are rotatably mounted on the upper end of the support frame five to support the lower end of the central tube.

[0019] Preferably, the rotating assembly includes:

[0020] A sliding seat, which is slidably mounted on the frame and located beside the support assembly;

[0021] A drive component twelve is mounted on the frame, and the drive end of the drive component twelve is connected to the sliding seat for driving the sliding seat to move closer to or away from the support assembly;

[0022] A jaw chuck, rotatably mounted on the sliding seat, is used to clamp the end of the central tube located on the support assembly;

[0023] A driving component thirteen is mounted on the sliding seat, and the driving end of the driving component thirteen is connected to the rear end of the gripper chuck, for driving the gripper chuck to rotate on the sliding seat;

[0024] When the driving component twelve drives the sliding seat closer to the support assembly, the jaw chuck clamps the end of the central tube, and the driving component thirteen drives the jaw chuck to rotate, so that the central tube rotates on the support assembly.

[0025] Preferably, the upper end of the sliding seat is provided with a mounting seat, the mounting seat is slidably disposed on the sliding seat by a drive assembly eight, and the drive assembly thirteen and the gripper chuck are mounted on the mounting seat;

[0026] Adjust the distance between the sliding blocks by using the drive component eight.

[0027] Preferably, the support rotation mechanism further includes:

[0028] A lifting assembly, mounted on the support frame five, is used to drive the central tube to disengage from the support rod;

[0029] The lifting assembly includes:

[0030] Drive component fourteen is mounted on the support frame five;

[0031] A lifting block is mounted on the drive end of the drive component fourteen and is movably positioned between two adjacent support rods;

[0032] When the driving component fourteen drives the lifting block to extend between two adjacent support rods, the lifting block moves to abut the lower end of the central tube, thereby driving the central tube to disengage from the upper end of the support rod.

[0033] Preferably, the support frame five is slidably mounted on the frame via a worm gear screw jack one.

[0034] Preferably, the welding mechanism includes:

[0035] A welded beam, which is slidably mounted on the frame;

[0036] A drive component fifteen is mounted on the frame, and the drive end of the drive component fifteen is movably connected to the welding beam for driving the welding beam to move on the frame;

[0037] At least one set of welding components is slidably disposed on the welding beam;

[0038] At least one set of drive components six, which connects the welding beam and the corresponding welding component one, is used to drive the welding component one to slide on the welding beam;

[0039] Welding component two is slidably mounted on the frame, and welding component two is movably inserted into the central tube on the support rotation mechanism and cooperates with welding component one to weld the mesh onto the central tube;

[0040] The welding assembly one includes:

[0041] Drive component sixteen is mounted on the welded beam;

[0042] The third electrode is mounted on the driving end of the driving component sixteen;

[0043] The third electrode is driven to move and abut against the upper end of the mesh by the driving component sixteen.

[0044] Preferably, the second welding assembly includes:

[0045] Support frame six is ​​slidably mounted on the frame;

[0046] The inner strut is slidably mounted on the support frame six.

[0047] The fourth electrode is mounted on the inner support rod;

[0048] Drive component seven, which connects the inner support rod and the support frame six, is used to drive the inner support rod to slide on the support frame six, so that the inner support rod is inserted into the central tube, and the mesh is welded to the central tube with the cooperation of the third electrode and the fourth electrode.

[0049] Preferably, the support frame six is ​​movably mounted on the frame via a worm gear screw jack two.

[0050] Preferably, the welding mechanism further includes:

[0051] A feeding assembly, which is mounted on the welding assembly or slidably mounted on the welding beam;

[0052] The feeding assembly includes:

[0053] Drive component seventeen is mounted on drive assembly six;

[0054] A pusher plate is mounted on the drive end of the drive component seventeen;

[0055] When the driving component seventeen drives the pusher plate to move toward the central tube, the pusher assembly moves on the welding beam, causing the pusher plate to abut against the rear end of the central tube, thereby pushing the central tube toward the gripper chuck of the rotating assembly.

[0056] Preferably, the clamping mechanism includes:

[0057] The flip plate has its rear end hinged to the frame;

[0058] A drive component eighteen is mounted on the frame, and the drive end of the drive component eighteen is hinged to the flap, for driving the front end of the flap to move toward or away from the support assembly;

[0059] Several rotating wheels are hinged to the front end of the flap, which are used to move and abut against the mesh and press the mesh against the central tube at the upper end of the support assembly;

[0060] A clearance zone is provided between adjacent rotating wheels, and the welding mechanism welds the mesh onto the central tube through the clearance zone.

[0061] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0062] The loading and unloading mechanism designed in this technical solution is used for loading and unloading the central tube. The pressing mechanism presses one end of the mesh fabric onto the central tube at the upper end of the supporting rotating mechanism. The welding mechanism welds one end of the mesh fabric to the central tube. Then, the supporting rotating mechanism drives the central tube to rotate so that the mesh fabric is wrapped around the central tube. Finally, the welding mechanism welds the other end of the mesh fabric to the central tube. There is no need to manually wind the mesh fabric, which improves production efficiency and production quality. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the structure of this technical solution.

[0064] Figure 2 This is a schematic diagram of the rotating component in this technical solution.

[0065] Figure 3 for Figure 1 Enlarged view of point A in the image.

[0066] Figure 4 This is a schematic diagram of the support assembly of this technical solution.

[0067] Figure 5 This is a schematic diagram of the clamping mechanism in this technical solution.

[0068] Reference numerals: 1. Frame; 81. Support rotation mechanism; 811. Support assembly; 812. Support frame five; 813. Support rod; 814. Worm gear screw jack one; 82. Rotation assembly; 821. Sliding seat; 822. Drive component twelve; 823. Grip chuck; 824. Drive component thirteen; 825. Mounting seat; 83. Lifting assembly; 831. Drive component fourteen; 832. Lifting block; 84. Clamping mechanism; 841. Flip plate; 842. Drive component eighteen; 843. Rotating wheel; 844. Clearance area;

[0069] 9. Welding mechanism; 91. Welding beam; 92. Drive component 15; 93. Welding assembly 1; 931. Drive component 16; 932. Third electrode; 94. Drive component 6; 95. Welding assembly 2; 951. Support frame 6; 952. Inner support rod; 953. Fourth electrode; 954. Drive component 7; 955. Worm gear screw jack 2; 96. Pushing assembly; 961. Drive component 17; 962. Pushing plate;

[0070] 200. Central tube. Detailed Implementation

[0071] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0072] like Figure 1 As shown, a wire mesh welding machine is used to wind and weld wire mesh onto a central tube, comprising:

[0073] Rack 1;

[0074] The loading and unloading mechanism is installed on the side of the frame 1 and is used to load and unload the central tube 200. The loading and unloading mechanism is a robotic arm (existing technology).

[0075] A support rotation mechanism 81 is mounted on the frame 1 and is used to store the central tube 200 transported by the loading and unloading mechanism;

[0076] The pressing mechanism 84 is mounted on the frame 1 and is used to press the side end of the mesh fabric transported from the previous station (the previous station is a conveying device set on the frame 1 or the material is fed manually) onto the central tube 200 on the supporting rotation mechanism 81.

[0077] Welding mechanism 9, which is mounted on frame 1, is used to weld the mesh to the outside of the central tube 200 on the supporting rotating mechanism 81;

[0078] The support rotation mechanism 81 includes:

[0079] Support assembly 811, which is mounted on frame 1, is used to store center tube 200;

[0080] Rotating component 82, which is mounted on frame 1, is used to drive center tube 200 to rotate on support component 811, thereby enabling the mesh to be wound onto center tube 200;

[0081] Support assembly 811 includes:

[0082] Support frame 5812 is mounted on frame 1;

[0083] Several support rods 813 are rotatably mounted on the upper end of the support frame 812 (the rotatable connection of the support rods 813 is achieved by bearings or by directly overcoming the friction between the two), and are used to support the lower end of the central tube 200.

[0084] This technical solution uses two support rods 813 arranged side by side, and then the central tube 200 is placed at the upper end between the two support rods 813, thereby realizing the placement of the central tube 200.

[0085] Combination Figure 1 and Figure 2 The rotating component 82 includes:

[0086] The sliding seat 821 is slidably mounted on the frame 1 via a slide rail slider and is located beside the support assembly 811;

[0087] A drive component 12 822 (which is a cylinder, an electric push rod, or a linear guide) is mounted on the frame 1, and the drive end of the drive component 12 822 is connected to the sliding seat 821 for driving the sliding seat 821 to move closer to or away from the support assembly 811.

[0088] A jaw chuck 823 (a three-jaw chuck or a multi-jaw chuck) is rotatably mounted on a sliding seat 821 for clamping the end of the central tube 200 located on the support assembly 811;

[0089] The drive component 13 824 (which is a motor or a rotary cylinder) is mounted on the sliding seat 821, and the drive end of the drive component 13 824 is connected to the rear end of the gripper chuck 823 for driving the gripper chuck 823 to rotate on the sliding seat 821. The drive end of the drive component 13 824 is connected to a gear, and the outer side of the rear end of the gripper chuck 823 is provided with teeth, which mesh with the gear, thereby enabling the drive component 13 824 to drive the gripper chuck 823 to rotate.

[0090] When the drive component 12 822 drives the sliding seat 821 to approach the support assembly 811, the gripper chuck 823 clamps the end of the central tube 200. The drive component 13 824 drives the gripper chuck 823 to rotate, so that the central tube 200 rotates on the support assembly 811, thereby realizing the mesh fabric being wound on the outer wall of the central tube 200.

[0091] A mounting base 825 is provided on the upper end of the sliding base 821. The mounting base 825 is slidably connected to the sliding base 821 via a drive assembly 8. A drive assembly 824 and a gripper chuck 823 are mounted on the mounting base 825.

[0092] The distance between the mounting base 825 and the sliding base 821 is adjusted by driving component eight;

[0093] The drive assembly eight is a cylinder, a linear motor, or an electric push rod, which is mounted on the sliding seat 821. The drive end of the drive assembly eight is connected to the mounting seat 825, and the drive assembly eight drives the mounting seat 825 to move closer to or away from the upper end of the sliding seat 821; or, the drive assembly eight can be a screw lifting device (for specific structure, please refer to the structure disclosed in Chinese Patent CN202122816734.5).

[0094] like Figure 4 The supporting rotation mechanism 81 also includes:

[0095] The lifting assembly 83 is mounted on the support frame 812 and is used to drive the center tube 200 to disengage from the upper end of the support rod 813, thereby facilitating the loading and unloading mechanism to remove the center tube 200 for unloading.

[0096] Lifting assembly 83 includes:

[0097] Drive component 14 831, which is mounted on support frame 5 812;

[0098] The lifting block 832 is installed on the drive end of the drive component 14 831 and is movably positioned between two adjacent support rods 813;

[0099] When the driving component 14 831 drives the lifting block 832 to extend between two adjacent support rods 813, the lifting block 832 moves to abut the lower end of the central tube 200, thereby driving the central tube 200 to disengage from the upper end of the support rod 813, making it convenient for the loading and unloading mechanism to remove the central tube 200 for unloading.

[0100] The support frame 812 is slidably mounted on the frame 1 via the worm gear screw jack 814. The worm gear screw jack 814 is existing technology, and its specific structure can be found in Chinese Patent CN200820170546.1, so it will not be described in detail here.

[0101] Combination Figure 1 and Figure 3 The welding mechanism 9 includes:

[0102] Welded beam 91 is slidably mounted on frame 1 via a slide rail slider;

[0103] The drive component 15 92 (which is a cylinder, an electric push rod, or a linear motor) is mounted on the frame 1, and the drive end of the drive component 15 92 is movably connected to the welding beam 91 for driving the welding beam 91 to move on the frame 1.

[0104] At least one set of welding components 93 is slidably mounted on the welding beam 91 via a slide rail slider;

[0105] At least one set of drive components 6 94 connects the welding beam 91 and the corresponding welding component 1 93, and is used to drive the welding component 1 93 to slide on the welding beam 91. The drive components 6 94 correspond to the welding component 1 93. The drive components 6 94 are a transmission connection between a motor and a gear rack, which is prior art. The specific structure of the drive components 6 94 can be found in Chinese Patent CN202121454289.6, and will not be described in detail here.

[0106] Welding assembly 2 95 is slidably mounted on the frame 1, and welding assembly 2 95 is movably inserted into the central tube 200 on the support rotation mechanism 81 and cooperates with welding assembly 1 93 to weld the mesh onto the central tube 200.

[0107] Welding assembly 193 includes:

[0108] The drive unit 16 931 is a cylinder or a linear motor, which is mounted on the welded beam 91;

[0109] The third electrode 932 is mounted on the driving end of the driving component sixteen 931;

[0110] The third electrode 932 is driven to move and abut against the upper end of the mesh by the drive component 16 931.

[0111] Welding assembly 2.95 includes:

[0112] Support frame 6951 is slidably mounted on frame 1;

[0113] The inner strut 952 is slidably mounted on the support frame 951;

[0114] The fourth electrode 953 is mounted on the inner support rod 952;

[0115] The drive assembly 7 954 (existing technology, specific structure referenced in Chinese patent CN202121454289.6) connects the inner support rod 952 and the support frame 6 951, and is used to drive the inner support rod 952 to slide on the support frame 6 951, so that the inner support rod 952 is inserted into the central tube 200. With the cooperation of the third electrode 932 and the fourth electrode 953, the mesh is welded to the central tube 200. The mesh is spot welded to the central tube by the third electrode 932 and the fourth electrode 953.

[0116] The support frame 6951 is movably mounted on the frame 1 via the worm gear screw jack 2955. The worm gear screw jack 2955 is existing technology, and its specific structure can be found in Chinese patent CN200820170546.1, so it will not be described in detail here.

[0117] like Figure 3 The welding mechanism 9 also includes:

[0118] The pusher assembly 96 is mounted on the drive assembly 94;

[0119] The pusher assembly 96 includes:

[0120] The drive component 17 961 is mounted on the welding assembly 1 93 or slidably mounted on the welding beam 91. When the drive component 17 961 is mounted on the welding assembly 1 93, the drive component 17 961 slides on the welding beam 91 along with the welding assembly 1 93. When the drive component 17 961 is mounted on the welding beam 91 via a slide rail slider, the drive component 17 961 is driven to slide on the welding beam 91 by a cylinder or an electric push rod.

[0121] Pusher plate 962, which is installed on the drive end of drive component seventeen 961;

[0122] When the drive component 17 961 drives the pusher plate 962 to move toward the center tube 200, the drive component 6 94, or a cylinder or electric push rod drives the pusher component 96 to move on the welding beam 91, causing the pusher plate 962 to abut against the rear end of the center tube 200, thereby pushing the center tube 200 toward the gripper chuck 823 of the rotating component 82, so that the gripper chuck 823 can hold the center tube 200.

[0123] like Figure 1 and Figure 5 The clamping mechanism 84 includes:

[0124] Flip plate 841, the rear end of which is hinged to frame 1;

[0125] The drive component 18 842 (which is a cylinder or a linear motor) is mounted on the frame 1, and the drive end of the drive component 18 842 is hinged to the flap 841 for driving the front end of the flap 841 to move toward or away from the support assembly 811.

[0126] Several rotating wheels 843 are distributed along the length of the flap 841 on the edge of the flap 841, and the rotating wheels 843 are hinged to the front end of the flap 841 for moving to abut against the mesh and pressing the mesh against the central tube 200 at the upper end of the support assembly 811.

[0127] A clearance area 844 is provided between adjacent rotating wheels 843, and the welding mechanism 9 welds the mesh to the central tube 200 through the clearance area 844.

[0128] This technical solution uses a loading and unloading mechanism to load the central tube 200 onto the supporting rotation mechanism 81. The welding beam 91 moves above the central tube 200, and the pusher plate 962 of the pusher assembly 96 descends. The drive assembly 94 drives the pusher plate 962 to abut against one end of the central tube 200 and drives the central tube 200 to move towards the gripper chuck 823. The gripper chuck 823 clamps the other end of the central tube 200, and the pusher plate 962 rises and leaves the central tube 200. The inner support rod 952 is inserted into the central tube 200. When the previous working... The mesh fabric is moved toward the central tube 200, and the side end of the mesh fabric crosses the vertical plane where the center line of the central tube 200 is located; the clamping mechanism 84 clamps the end of the mesh fabric onto the central tube 200; the third electrode 932 of the welding assembly 1 93 moves to the clearance area 844 for welding, and at the same time the inner support rod 952 moves with the welding assembly 1 93, so that the fourth electrode 953 corresponds to the third electrode 932 and welding is achieved; the transport assembly 1 71 and the transport assembly 2 77 release the two ends of the mesh fabric and move to the initial position;

[0129] After one side of the mesh is welded to the central tube 200, the drive component 13 824 drives the gripper chuck 823 to rotate at a set angle, so that the mesh is wound around the central tube 200 and the other side of the mesh is placed between the third electrode 932 and the fourth electrode 953. Then the third electrode 932 of the welding component 1 93 moves to the clearance area 844 to perform welding, thereby achieving the winding and welding of the mesh to the central tube 200.

[0130] After the mesh is welded onto the central tube 200, the welding beam 91 drives the welding assembly 1 93 away from the upper end of the central tube 200, the inner support rod 952 of the welding assembly 2 95 leaves the central tube 200, the flip plate 841 of the clamping mechanism 84 is lifted, the gripper chuck 823 releases the central tube 200, and the lifting assembly 83 lifts the central tube 200 off the support assembly 811; the loading and unloading mechanism unloads the central tube 200 with the welded mesh.

[0131] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

[0132] It should be noted that the structures, proportions, and sizes depicted in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation of this technical solution and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this technical solution, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms used in this specification, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity and not intended to limit the scope of implementation of this technical solution. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the technical solution's implementation.

[0133] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0134] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. A welding device of a web roll welding machine for winding and welding a web fabric on a center tube, characterized in that, It comprises: a rack (1); a feeding and discharging mechanism installed beside the rack (1) for feeding and discharging the center tube (200); a supporting and rotating mechanism (81) installed on the rack (1) for storing the center tube (200) sent by the feeding and discharging mechanism; a pressing mechanism (84) installed on the rack (1) for pressing the side end of the mesh cloth sent by the previous station on the center tube (200) on the supporting and rotating mechanism (81); a welding mechanism (9) installed on the rack (1) for welding the mesh cloth to the outside of the center tube (200) on the supporting and rotating mechanism (81); The supporting and rotating mechanism (81) comprises: a supporting assembly (811) installed on the rack (1) for storing the center tube (200); a rotating assembly (82) installed on the rack (1) for driving the center tube (200) to rotate on the supporting assembly (811); The supporting assembly (811) comprises: a support frame five (812) installed on the rack (1); a plurality of support rods (813) rotatably arranged at the upper end of the support frame five (812) for supporting the lower end of the center tube (200).

2. The welding device of the mesh winding welding machine according to claim 1, wherein: The rotating assembly (82) comprises: a sliding seat (821) slidingly installed on the rack (1) and located beside the supporting assembly (811); a driving member twelve (822) installed on the rack (1), and the driving end of the driving member twelve (822) is connected to the sliding seat (821) for driving the sliding seat (821) to approach or move away from the supporting assembly (811); a jaw chuck (823) rotatably installed on the sliding seat (821) for clamping the end of the center tube (200) located on the supporting assembly (811); a driving member thirteen (824) installed on the sliding seat (821), and the driving end of the driving member thirteen (824) is connected to the rear end of the jaw chuck (823) for driving the jaw chuck (823) to rotate on the sliding seat (821); When the driving member twelve (822) drives the sliding seat (821) to approach the supporting assembly (811), the jaw chuck (823) clamps the end of the center tube (200), and the jaw chuck (823) is driven to rotate by the driving member thirteen (824) to realize the rotation of the center tube (200) on the supporting assembly (811).

3. The welding device of the mesh winding welding machine according to claim 2, wherein: The upper end of the sliding seat (821) is provided with a mounting seat (825), the mounting seat (825) is slidingly arranged on the sliding seat (821) through a driving assembly eight, and the driving member thirteen (824) and the jaw chuck (823) are installed on the mounting seat (825); The distance between the sliding seat (821) and the mounting seat (825) is adjusted by the driving assembly eight.

4. The welding device of the web roll welding machine according to claim 1, characterized in that: the supporting and rotating mechanism (81) further comprises: a jacking assembly (83) mounted on the support frame five (812) and used to drive the central tube (200) to be separated from the support rods (813); the jacking assembly (83) comprises: a driving member fourteen (831) mounted on the support frame five (812); a jacking block (832) mounted on the driving end of the driving member fourteen (831) and movably arranged between two adjacent support rods (813); when the driving member fourteen (831) drives the jacking block (832) to extend between two adjacent support rods (813), the jacking block (832) movably abuts the lower end of the central tube (200), thereby driving the central tube (200) to be separated from the upper end of the support rods (813).

5. The welding device of the web roll welding machine according to claim 1, characterized in that: the support frame five (812) is slidably arranged on the frame (1) through a worm screw lifter one (814).

6. The welding device of the web roll welding machine according to claim 1, characterized in that: the welding mechanism (9) comprises: a welding beam (91) slidably arranged on the frame (1); a driving member fifteen (92) mounted on the frame (1), and the driving end of the driving member fifteen (92) movably connected to the welding beam (91) and used to drive the welding beam (91) to move on the frame (1); at least one set of welding assembly one (93) slidably arranged on the welding beam (91); at least one set of driving assembly six (94) connected between the welding beam (91) and the corresponding welding assembly one (93) and used to drive the welding assembly one (93) to slide on the welding beam (91); a welding assembly two (95) slidably arranged on the frame (1) and movably inserted into the central tube (200) on the supporting and rotating mechanism (81) and cooperated with the welding assembly one (93) to weld the web on the central tube (200); the welding assembly one (93) comprises: a driving member sixteen (931) mounted on the welding beam (91); a third electrode (932) mounted on the driving end of the driving member sixteen (931); the third electrode (932) is driven by the driving member sixteen (931) to movably abut the upper end of the web.

7. The welding device of the web roll welding machine according to claim 6, characterized in that: the welding assembly two (95) comprises: a support frame six (951) slidably mounted on the frame (1); an inner support rod (952) slidably arranged on the support frame six (951); a fourth electrode (953) mounted on the inner support rod (952); A seventh driving assembly (954) is connected with the inner support rod (952) and the sixth support frame (951), and is used to drive the inner support rod (952) to slide on the sixth support frame (951) so that the inner support rod (952) is inserted into the center tube (200), and the screen cloth is welded on the center tube (200) under cooperation of the third electrode (932) and the fourth electrode (953).

8. The welding device of the web welding machine according to claim 7, characterized in that: The sixth support frame (951) is movably installed on the rack (1) through a worm screw elevator II (955).

9. The welding device of the web welding machine according to any one of claims 6-8, characterized in that: The welding mechanism (9) further comprises: A pushing assembly (96) is installed on the first welding assembly (93) or is movably installed on the welding beam (91); The pushing assembly (96) comprises: A seventeenth driving member (961) is installed on the sixth driving assembly (94); A pushing plate (962) is installed on a driving end of the seventeenth driving member (961); When the seventeenth driving member (961) drives the pushing plate (962) to move towards the center tube (200), the pushing assembly (96) moves on the welding beam (91) so that the pushing plate (962) abuts against a rear end of the center tube (200), and the center tube (200) is pushed to move towards the jaw chuck (823) of the rotating assembly (82).

10. The welding device of the web welding machine according to claim 1, characterized in that: The pressing mechanism (84) comprises: A flap (841) is hingedly connected to the rack (1) at a rear end thereof; An eighteenth driving member (842) is installed on the rack (1), and a driving end of the eighteenth driving member (842) is hingedly connected to the flap (841) so as to drive the flap (841) to move towards or away from the supporting assembly (811) at a front end thereof; A plurality of rotating wheels (843) are hingedly connected to the front end of the flap (841) and are used to movably abut against the screen cloth and press the screen cloth against the center tube (200) at an upper end of the supporting assembly (811); Adjacent to the rotating wheels (843), a clearance (844) is left, and the welding mechanism (9) welds the screen cloth to the center tube (200) through the clearance (844).

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