Assembly welding tool for end socket and barrel

Abstract

The utility model discloses an end socket and barrel assembly welding tool which comprises a working table, a working table flange seat is arranged on the working table, a slewing bearing with the top capable of rotating is fixedly connected to the working table flange seat, and a driving shaft of the slewing bearing is connected with a rotor shaft of a slewing bearing motor. A clamping slewing mechanism capable of clamping and fixing the end socket and the barrel is fixed to the slewing bearing, a jacking mechanism is further fixed to the workbench and comprises a jacking support fixed to the workbench, a jacking speed reducing mechanism is arranged at the top of the jacking support, the input end of the jacking speed reducing mechanism is connected with a rotor shaft of a jacking motor, and the output end of the jacking motor is connected with a rotating shaft of the jacking motor. The output end of the jacking speed reducing mechanism is provided with a jacking screw pointing to the axis of the slewing bearing, the inner end of the jacking screw is hinged to a jacking flange, and the height of the jacking flange is matched with the height of a welding circular seam of the end socket. According to the end socket and barrel assembly welding tool, the occupied driving time is short, a tool clamp does not need to be additionally welded on the barrel, and the welding efficiency and the welding quality are improved.

Description

Technical Field

[0001] This utility model relates to a welding fixture, and more particularly to a welding fixture for assembling a head and a cylinder, belonging to the field of equipment manufacturing fixture technology. Background Technology

[0002] Currently, in industries such as energy and chemical, food and pharmaceutical, environmental protection and water treatment, and agriculture and food cold chain, for the docking of large cylinders with thick walls, as well as the docking circumferential seams between pressure vessel heads and cylinders, it is necessary to evenly flatten the misalignment of the circumferential seams and adjust the docking state of the cylinder and the head during riveting.

[0003] To even out the misalignment of the circumferential seams and adjust the condition of the cylinder or head, the following actions are typically required: 1. Lift the cylinder using an overhead crane and weld a H-shaped clamp onto the shell surface; 2. Insert wedges to even out the misalignment of the circumferential seams; 3. After welding the circular head to the cylinder, the clamps need to be cut off and ground. In short, the existing method requires welding H-shaped clamps to the surfaces of the head and cylinder, affecting the assembly appearance quality, occupying overhead cranes in the workshop, and reducing workshop manufacturing efficiency. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0006] The purpose of this invention is to overcome the problems existing in the prior art and provide a welding fixture for assembling the end cap and the cylinder, which occupies less travel time, does not require additional welding fixtures on the cylinder, and improves welding efficiency and welding quality.

[0007] To solve the above technical problems, this utility model provides a welding fixture for assembling a head and a cylinder, including a worktable with a worktable flange seat. A slewing bearing with a rotatable top is fixedly connected to the worktable flange seat, and the drive shaft of the slewing bearing is connected to the rotor shaft of a slewing bearing motor. A clamping slewing mechanism capable of clamping and fixing the head and cylinder is fixed on the slewing bearing. A tightening mechanism is also fixed on the worktable, including a tightening bracket fixed to the worktable. A tightening deceleration mechanism is provided on the top of the tightening bracket. The input end of the tightening deceleration mechanism is connected to the rotor shaft of the tightening motor, and the output end of the tightening deceleration mechanism is provided with a tightening screw pointing towards the axis of the slewing bearing. A tightening flange is hinged to the inner end of the tightening screw, and the height of the tightening flange matches the height of the welding circumferential seam of the head.

[0008] As an improvement of this utility model, the clamping rotary mechanism includes a clamping center flange, the lower end face of which is fixedly connected to a rotary bearing. Multiple radial support arms are connected to the circumference of the upper end face of the clamping center flange. The radial support arms are centrally symmetrically distributed, and the outer ends of each radial support arm are respectively connected to a vertical long arm or a vertical short arm. The vertical long arms or vertical short arms are alternately arranged at intervals. A head support cylinder is installed on the inner side wall of the upper end of the vertical short arm, and a cylinder support cylinder is installed on the inner side wall of the upper end and middle part of the vertical long arm. The free end of the piston rod of each cylinder support cylinder and the head support cylinder is provided with a V-shaped clamp.

[0009] As a further improvement of this utility model, a single-sided misalignment gasket is attached to the end face of the tightening flange to compensate for the difference in circumference between the end cap and the cylinder.

[0010] As a further improvement of this utility model, the workbench is also provided with a slewing bearing motor fixing seat and a clamping mechanism fixing seat. The bottom of the slewing bearing motor is fixed on the slewing bearing motor fixing seat, and the bottom of the clamping motor is fixed on the clamping mechanism fixing seat.

[0011] As a further improvement of this utility model, the V-shaped clamp head is a replaceable flexible wear-resistant material part.

[0012] Compared with the prior art, the advantages or beneficial effects of the embodiments of this application include at least the following: 1. The assembly and welding of the cylinder and the end cap can be easily completed during use, the welding quality meets the process requirements, the error rate meets the design requirements, the operation is simple, and the shaping effect is good;

[0013] 2. It does not occupy the crane for a long time, thus improving the utilization rate of the crane in the workshop; it does not require additional welding of tooling fixtures on the cylinder, reducing the amount of welding and grinding, and improving the appearance quality of the equipment;

[0014] 3. To achieve automated assembly and welding, thereby improving welding efficiency and quality; to enhance the automation level of welding in the workshop, and to significantly reduce the labor intensity of workers;

[0015] 4. Previously, each shift could only weld two cylindrical heads. After using this equipment, each shift can weld ten cylindrical heads, greatly improving manufacturing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein:

[0017] Figure 1 This is a front view of the welding fixture for assembling the head and the cylinder of this utility model;

[0018] Figure 2 for Figure 1 A three-dimensional image;

[0019] Figure 3 This is a perspective view of the workbench in this utility model;

[0020] Figure 4 This is a perspective view of the slewing bearing in this utility model;

[0021] Figure 5 This is a perspective view of the clamping rotary mechanism in this utility model;

[0022] Figure 6 This is a perspective view of the clamping mechanism in this utility model;

[0023] Figure 7 This is a front view of the present invention in its working state;

[0024] Figure 8 This is a perspective view of the present invention in its working state;

[0025] In the diagram: 1. Worktable; 1a. Worktable flange seat; 1b. Slewing bearing motor mounting seat; 1c. Tightening mechanism mounting seat;

[0026] 2. Slewing bearing: 2a. Slewing bearing motor;

[0027] 3. Clamping rotary mechanism; 3a. Clamping center flange; 3b. Radial support arm; 3c. Vertical long arm; 3d. Vertical short arm; 3e. Cylinder support cylinder; 3f. Head support cylinder; 3g. V-shaped clamp;

[0028] 4. Tightening mechanism; 4a. Tightening bracket; 4b. Tightening motor; 4c. Tightening screw; 4d. Tightening flange;

[0029] 5. End cap; 6. Shell. Detailed Implementation

[0030] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0031] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] like Figures 1 to 8 As shown, the welding fixture for assembling the end cap and cylinder of this utility model includes a worktable 1, a slewing bearing 2, a clamping slewing mechanism 3, and a tightening mechanism 4. The worktable 1 is supported on the ground by outriggers. A worktable flange seat 1a is installed at the center of the main body of the worktable 1, and a slewing bearing motor mounting seat 1b is provided on one side of the worktable flange seat 1a. A worktable extension section is provided on one side of the main body of the worktable 1, and a tightening mechanism mounting seat 1c is provided on the worktable extension section.

[0034] The bottom of the slewing bearing 2 is fixed to the workbench flange seat 1a by bolts, and its top is driven to rotate by the worm gear reducer. The input shaft of the worm gear reducer is driven by the slewing bearing motor 2a, and the bottom of the slewing bearing motor 2a is fixed to the slewing bearing motor mounting seat 1b.

[0035] The clamping rotary mechanism 3 has a clamping center flange 3a at its bottom center, and the lower end face of the clamping center flange 3a is fixed above the rotary bearing 2. Multiple radial support arms 3b are symmetrically welded radially to the upper end face of the clamping center flange 3a. The outer ends of each radial support arm 3b are connected to either a vertical long arm 3c or a vertical short arm 3d, with the vertical long arms 3c and vertical short arms 3d alternating between each other. A head support cylinder 3f is fixed to the upper inner wall of each vertical short arm 3d. A head support cylinder 3f and a cylinder support cylinder 3e are fixed to the upper inner wall and middle inner wall of each vertical long arm 3c, respectively. The free ends of the piston rods of the cylinder support cylinder 3e and the head support cylinder 3f extend towards the axis of the clamping center flange 3a and are respectively fixed with V-shaped clamps 3g. The V-shaped clamps 3g are made of replaceable flexible wear-resistant material to prevent damage to the workpiece.

[0036] The lower cylinder support cylinder 3e can be at the same height as the head support cylinder 3f, and together they use the V-shaped clamp 3g to hold the upper and lower sides of the welding circumferential seam.

[0037] The clamping mechanism 4 includes a clamping bracket 4a, the bottom of which is fixed to the clamping mechanism fixing seat 1c by bolts; a clamping deceleration mechanism is installed on the top of the clamping bracket 4a, the input end of which is driven by a clamping motor 4b, and the output end of which is provided with a clamping screw 4c. The inner end of the clamping screw 4c points to the axis of the slewing bearing 2 and is hinged with a clamping flange 4d. The clamping flange 4d can rotate around the axis of the clamping screw 4c, that is, when the clamping screw 4c rotates, the clamping flange 4d only performs radial extension and contraction without rotation.

[0038] The welding process for the head and the cylinder assembly is as follows:

[0039] Before assembling the head 5 and the cylinder 6, measure their outer circumferences, calculate the assembly error, and fabricate a single-sided misalignment shim. Then, use a crane to hoist the head 5 with its opening facing upwards, ensuring its bottom center area rests on the inner ends of each radial support arm 3b. Next, hoist the cylinder 6 onto the head 5. Using a remote control, operate the solenoid reversing valve to extend the piston rods of the cylinder support cylinder 3e and the head support cylinder 3f, driving the V-shaped clamp 3g to clamp the outer walls of the cylinder 6 and the head 5. Then, remove the crane.

[0040] The height of the tightening flange 4d corresponds to the circumferential seam of the head 5 and the cylinder 6. The single-sided misaligned gasket is pasted on the corresponding area of ​​the tightening flange 4d. If the perimeter of the cylinder 6 is less than the perimeter of the head 5, the single-sided misaligned gasket is pasted on the upper half of the tightening flange 4d; if the perimeter of the head 5 is less than the perimeter of the cylinder 6, the single-sided misaligned gasket is pasted on the lower half of the tightening flange 4d.

[0041] The slewing bearing motor 2a is controlled by a remote control, causing the slewing bearing 2 to drive the clamping slewing mechanism 3 and the workpiece to rotate and stop at a suitable position. The remote control starts the clamping motor 4b, controlling the clamping mechanism 4 to work, causing the clamping screw 4c to extend until the clamping flange 4d is pressed against the outer wall of the head 5 and the cylinder 6. The welding operator performs spot welding in the pressed area. After the spot welding is completed, the clamping flange 4d is removed by the controller.

[0042] Then rotate the slewing bearing 2 by a certain angle, for example, by one-eighth of a circumference; then extend the tightening screw 4c until the tightening flange 4d is attached to the outer wall of the head 5 and the cylinder 6 and pressed tightly. The welding workers spot weld in the pressing area. After the spot welding is completed, the tightening flange 4d is removed through the controller.

[0043] Repeat the above steps until all eight phase points are spot welded, thus completing the spot welding of the cylinder 6 and the head 5. Use a crane to lift out the assembled cylinder 6 and head 5; then insert a new head 5, and repeat the process.

[0044] The power of the slewing bearing motor 2a is 0.37KW, the power of the clamping motor 4b is 1.1KW, and the compressed air source pressure is 0.8MPa.

[0045] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A welding fixture for assembling a head and a cylinder, comprising a worktable (1), characterized in that: The workbench (1) is provided with a workbench flange seat (1a), and a slewing bearing (2) with a rotatable top is fixedly connected to the workbench flange seat (1a). The drive shaft of the slewing bearing (2) is connected to the rotor shaft of the slewing bearing motor (2a). The slewing bearing (2) is fixed with a clamping slewing mechanism (3) capable of clamping and fixing the end cap and the cylinder. The workbench (1) is also fixed with a clamping mechanism (4). The clamping mechanism (4) includes a clamping bracket (4a) fixed on the workbench (1). The top of the clamping bracket (4a) is provided with a clamping deceleration mechanism. The input end of the clamping deceleration mechanism is connected to the rotor shaft of the clamping motor (4b). The output end of the clamping deceleration mechanism is provided with a clamping screw (4c) pointing to the axis of the slewing bearing (2). The inner end of the clamping screw (4c) is hinged with a clamping flange (4d). The height of the clamping flange (4d) matches the height of the welded circumferential seam of the end cap.

2. The welding fixture for assembling the head and the cylinder according to claim 1, characterized in that: The clamping rotary mechanism (3) includes a clamping center flange (3a), the lower end face of which is fixedly connected to the rotary bearing (2). Multiple radial support arms (3b) are connected to the circumference of the upper end face of the clamping center flange (3a). Each radial support arm (3b) is centrally symmetrically distributed, and the outer end of each radial support arm (3b) is connected to a vertical long arm (3c) or a vertical short arm (3d). The vertical long arm (3c) or the vertical short arm (3d) are alternately arranged at intervals. A head support cylinder (3f) is installed on the inner side wall of the upper end of the vertical short arm (3d). A cylinder support cylinder (3e) is installed on the inner side wall of the upper end and the middle part of the vertical long arm (3c). A V-shaped clamp (3g) is provided on the free end of the piston rod of each cylinder support cylinder (3e) and the head support cylinder (3f).

3. The welding fixture for assembling the head and the cylinder according to claim 1, characterized in that: The end face of the tightening flange (4d) is affixed with a single-sided misalignment gasket to compensate for the difference in circumference between the end cap and the cylinder.

4. The welding fixture for the head and cylinder assembly according to claim 1, characterized in that: The workbench (1) is also provided with a slewing bearing motor mounting base (1b) and a clamping mechanism mounting base (1c). The bottom of the slewing bearing motor (2a) is fixed on the slewing bearing motor mounting base (1b), and the bottom of the clamping motor (4b) is fixed on the clamping mechanism mounting base (1c).

5. The welding fixture for assembling the head and the cylinder according to claim 2, characterized in that: The V-shaped clip (3g) is a replaceable flexible wear-resistant material part.

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