Automatic welding equipment and welding method for cylinder exterior

Abstract

The present invention discloses an automatic welding device and a welding method for the outside of a cylinder, comprising a frame, an axis body placed on the frame, and the axis body is driven to rotate through a driving component, two round-supporting components are installed at intervals on the middle of the axis body for supporting the workpiece to be welded, a pressure plate and a top cone are detachably mounted on the axis body near the head of the axis body, the top cone pushes the workpiece to be welded close to another workpiece to be welded, so that the two are closely connected; the pressure plate pushes the workpiece to be welded close to another workpiece to be welded, so that the two are closely connected; an automatic continuous welding machine is arranged on the outside of the frame, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded for welding. When in use, the present invention adopts horizontal automatic welding equipment to weld the large cylinder, cone and small cylinder of the stirring equipment, which solves the problems of height limit of the processing workshop, low efficiency of manual welding, and easy deformation of the cylinder in the traditional process.

Description

Technical Field

[0001] The invention relates to the field of cylinder welding processing, and in particular to an automatic cylinder external welding device and a welding method. Background Art

[0002] like Figure 1 As shown, the mixing chamber of the conventional mixing equipment is welded together by a large cylinder, a cone and a small cylinder. If the cylinder is placed flat (i.e. horizontal welding), the cylinder will be deformed by its own weight due to the thin wall thickness of the cylinder material of the mixing equipment (the wall thickness of the commonly used material is about 0.2 to 6 mm). The cylinder will be deformed into an oval shape as a whole, resulting in a large gap between the cylinder and the cone, making it impossible to weld.

[0003] Therefore, the current traditional process requires the large cylinder to be placed on the ground, the cone to be hoisted by a crane, the cone to be hoisted above the large cylinder, and then assembled and manually welded;

[0004] However, the above traditional processing technology has the following problems:

[0005] 1. When processing a relatively large mixing equipment, if the height of the cylinder and the cone is relatively high, the overhead crane is often unable to lift the cone to the top of the cylinder due to the height limitation of the processing workshop. It needs another equipment to lift it, which makes the processing process very troublesome;

[0006] Second, the current traditional processing technology still uses manual welding of cylinders and cones, which is inefficient and the processing process is very time-consuming;

[0007] 3. Manual welding is difficult to standardize because each welder has different welding abilities. It takes more inspection steps to inspect the cylinder welded by each welder, and the inspection process is very time-consuming. Summary of the invention

[0008] In order to solve the deficiencies in the prior art, the present invention provides an automatic welding device for the outside of a cylinder.

[0009] The technical solution of the present invention is:

[0010] The present invention provides an automatic welding device for the outside of a cylinder, which is characterized by comprising:

[0011] The frame; the rear section of the frame is provided with a driving component to form a driving area, the front section of the frame is provided with a detachable shaft support frame, the shaft body is placed on the frame, and the shaft body is driven to rotate by the driving component, the shaft body head is supported by the shaft support frame, so that the shaft body is placed in parallel and can rotate;

[0012] Two round-supporting parts are installed at intervals on the middle part of the shaft body for supporting the workpiece to be welded. A round-supporting sleeve is sleeved on the shaft body on the outer side of each round-supporting part facing the shaft body head. The shaft body is symmetrically provided with a round-supporting power device behind the round-supporting sleeve to drive the round-supporting sleeve to move, extend or retract in the direction of the round-supporting parts. A conveying pipe guide cone is installed outside the round-supporting part closest to the shaft body head on the shaft body to push the workpiece to be loosened after welding; a pressure plate and a top cone are detachably sleeved and installed in sequence at a position close to the shaft body head on the shaft body, and the top cone pushes the workpiece to be welded close to another workpiece to be welded so that the two are closely connected; the pressure plate pushes the workpiece to be welded close to another workpiece to be welded so that the two are closely connected;

[0013] Automatic continuous welding machine; it is arranged outside the frame, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded for welding.

[0014] Preferably, the end of the supporting circular sleeve is inclined;

[0015] The circular support component includes: a fixed back plate and a fan-shaped panel movably connected to the fixed back plate and capable of radially extending and retracting along the surface of the fixed back plate; the fan-shaped panel has an even number of pieces, which are assembled together to form an integral circle;

[0016] Each sector-shaped panel is provided with a waist-shaped hole, and a first connecting hole is opened at a position of the fixed back plate corresponding to the waist-shaped hole;

[0017] Reinforcement ribs are arranged at intervals on each sector-shaped panel, a fixing rod passes between every two adjacent reinforcement ribs, and a tension rebound piece is hooked between the fixing rod and the supporting circular sleeve.

[0018] Preferably, the tail end of each fan-shaped panel fitting the shaft body is in the shape of an inward-inclined arc, that is, the tail end of each fan-shaped panel is in the shape of an inwardly recessed arc that matches the corresponding end of the supporting circular sleeve; when the supporting circular sleeve is displaced and extended, the fan-shaped panel can be opened by cooperating with the tail end of the fan-shaped panel, thereby making the workpiece to be welded round.

[0019] Preferably, an inner concave limiting cavity is formed at the edge of the middle opening of the fixed back plate, which plays a limiting role when the supporting circular sleeve is displaced and extended to support the fan-shaped panel.

[0020] Preferably, the edge of the head end of the fan-shaped panel is chamfered, and the corner of the chamfer is the joint gap where the two workpieces to be welded are butted at the end.

[0021] Preferably, the end of the conveying pipe guide cone is inclined, and the shaft body is symmetrically installed with a conveying pipe guide power device behind the supporting cone sleeve. The conveying pipe guide power device is opposite to the direction of the supporting cone power device. The conveying pipe guide power device is used to drive the conveying pipe guide cone to move, extend or retract toward the head of the shaft body.

[0022] Preferably, the end of the top cone toward the circular supporting part is inclined, and the end of the pressure plate toward the circular supporting part is flat. A first power device is installed at the head of the shaft body, and the first power device is connected to the transmission rod in the inner cavity of the shaft body to drive the transmission rod to move, extend or retract. The outside of the shaft body is provided with a first limit hole and a second limit hole at positions corresponding to the pressure plate and the top cone. The first limit hole and the second limit hole pass through the transmission rod. The outer wall of the top cone is provided with a matching third limit hole at a position corresponding to the first limit hole; the outer wall of the pressure plate is provided with a matching fourth limit hole at a position corresponding to the second limit hole.

[0023] The present invention also provides a method for automatic welding of the outer part of a cylinder, comprising the following steps:

[0024] Cut the plate into large cylinder, cone and small cylinder, and clean the surrounding of the plate;

[0025] Plate rolling, rolling of plates for large cylinders, cones and small cylinders, and grinding of both sides of welds that need to be welded;

[0026] Clamp and fix, and weld the longitudinal seams of the large cylinder, cone and small cylinder;

[0027] The shaft support frame of the front section of the frame of the automatic welding equipment is removed;

[0028] The large cylinder with welded longitudinal seams is hoisted horizontally into the frame and placed on the rounding component. The cone with welded longitudinal seams is hoisted horizontally into the frame. The tail end of the cone is pressed against the chamfer of the rounding component closest to the shaft head, and the head end of the cone is pressed against the top cone. The rounding power device is started, and the rounding sleeve is displaced and extended. The fan-shaped panel can be opened by cooperating with the tail end of the fan-shaped panel. The inside of the first and tail ends of the large cylinder is rounded. The third limiting hole and the first limiting hole of the top cone are passed through the limiting rod. The first power device is started, and the top cone pushes the tail end of the cone close to the head end of the large cylinder, so that the two are closely connected.

[0029] The shaft support frame at the front section of the frame of the automatic welding equipment supports the shaft head;

[0030] The drive component of the starter frame drives the shaft body to rotate, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded, and then welding is started, and the initial spot welding is performed to fix the position, and then continuous welding is performed;

[0031] After the cone and the large cylinder are welded, the drive components of the frame are suspended;

[0032] The circle supporting power device is retracted, the circle supporting sleeve is displaced and retracted, the fan-shaped panel is retracted synchronously, the first power device is retracted, the top cone is removed, the conveying pipe guide power device is started to displace the conveying pipe guide cone toward the shaft head, and the cone and the large cylinder are loosened;

[0033] Remove the shaft support frame at the front section of the frame of the automatic welding equipment, hoist the small cylinder horizontally into the frame, put the pressing plate in, and then support the shaft head again with the shaft support frame, pass the limiting rod through the fourth limiting hole and the second limiting hole of the pressing plate, start the first power device, and the pressing plate will push the tail end of the small cylinder to the head end of the cone, so that the two are closely connected;

[0034] The drive component of the starter frame drives the shaft body to rotate, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded, and then welding is started, and the initial spot welding is performed to fix the position, and then continuous welding is performed;

[0035] After the welding of the small cylinder and cone is completed, the driving parts of the frame are suspended;

[0036] The shaft support frame of the front section of the frame of the automatic welding equipment is removed;

[0037] The first power unit is retracted, the pressure plate is removed, and the workpiece formed as a whole after welding the large cylinder, cone and small cylinder is hoisted and moved outward, and then the next component is welded, and this cycle is repeated.

[0038] The beneficial effects achieved by the present invention are as follows: the present invention adopts automatic welding equipment to weld the large cylinder, cone and small cylinder of the mixing equipment, which solves the problem that when processing relatively large mixing equipment, when the height of the cylinder and the cone are both high, the overhead crane is limited by the height of the processing workshop and often cannot lift the cone to the top of the cylinder, and other equipment is needed for lifting, which makes the processing process very troublesome;

[0039] The continuous welding machine is used for automatic welding, which eliminates the need for manual welding of the cylinder and cone, resulting in higher efficiency and faster processing;

[0040] Using continuous welding machines for automatic welding, the welding quality can be managed in a standardized manner and the inspection process can be faster;

[0041] A rounding component is used to round the cylinder before welding to avoid deformation of the cylinder, especially when welding a cylinder with a large inner diameter, which can make the welding accuracy higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the structure of a stirring chamber and its workpiece of a traditional stirring equipment.

[0043] Figure 2 It is a schematic side view of the overall structure of the present invention.

[0044] Figure 3 It is a front view schematic diagram of the overall structure of the present invention.

[0045] Figure 4 It is a schematic side view of the structure of the present invention equipped with a welding workpiece.

[0046] Figure 5 It is a structural schematic diagram of the shaft body, the round supporting component, the round supporting sleeve, the conveying pipe guide cone, the top cone and the pressing plate of the present invention.

[0047] Figure 6 It is a schematic diagram of the fixed back plate structure of the present invention.

[0048] Figure 7 It is a schematic structural cross-sectional view of the shaft body, the round supporting component, the round supporting sleeve, the conveying pipe guide cone, the top cone and the pressing plate of the present invention.

[0049] Figure 8 yes Figure 7 A local enlarged schematic diagram of point A in the middle.

[0050] Fig. 9 yes Figure 7 A local enlarged schematic diagram of point B in the middle.

[0051] Fig.10 yes Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0052] Fig.11 It is a schematic front view of a structure equipped with a welding workpiece according to another embodiment of the present invention.

[0053] Fig.12 It is a schematic top view of a structure equipped with a welding workpiece according to another embodiment of the present invention.

[0054] Fig.13 It is a top view schematic diagram of a polishing component polishing a welding workpiece according to another embodiment of the present invention.

[0055] Fig.14 It is a schematic front view of the structure of a polishing component according to another embodiment of the present invention.

[0056] Fig.15 It is a structural schematic diagram of another embodiment of the present invention.

[0057] In the accompanying drawings, 1, frame; 1000, driving component; 1001, shaft support frame;

[0058] 2. shaft body; 20. transmission rod; 21. first limiting hole; 22. second limiting hole;

[0059] 3. Large cylinder;

[0060] 4. Cone;

[0061] 5. Small cylinder;

[0062] 6. round support member; 60. fixed back plate; 600. first connection hole; 601. position limiting cavity;

[0063] 61. Fan-shaped panel; 610. Waist-shaped hole; 611. Reinforced ribs;

[0064] 7. Supporting sleeve; 70. Supporting power device;

[0065] 8. Conveyor pipe guide cone; 80. Conveyor pipe guide power device;

[0066] 9. Pressing plate; 90. Fourth limiting hole;

[0067] 10. top cone; 101. third limiting hole;

[0068] 11. The first power unit;

[0069] 12. Automatic continuous welding machine;

[0070] 13. Sliding track;

[0071] 14. Polishing machine; 15. Large slide plate; 16. Middle slide plate; 17. Small slide plate; 18. Stop plate; 19. Pushing part; 20. Slide groove. DETAILED DESCRIPTION

[0072] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0073] like Figures 2 to 10 As shown, the present invention provides an automatic welding device for the outside of a cylinder.

[0074] Including a rack 1;

[0075] The rear section of the frame 1 is provided with a driving component 1000 to form a driving area, and the front section of the frame 1 is provided with a detachable shaft support frame 1001;

[0076] The shaft body 2 is placed on the frame 1, and the tail of the shaft body 2 is driven by the driving component 1000 to rotate the shaft body 2 (in this embodiment, the driving component 1000 is a reduction motor, and in other embodiments, it can also be a common motor and driven by a belt or gear. Since the driving method and structure of driving the shaft body 2 to rotate by the driving component 1000 are prior art, they will not be repeated here), and the head of the shaft body 2 is supported by the shaft support frame 1001, so that the shaft body 2 is placed in parallel and can rotate;

[0077] A sliding track 13 and an automatic continuous welding machine 12 are arranged outside the frame 1. The welding is started after the welding gun nozzle is manually placed in correspondence with the joint gap of the workpiece to be welded, and the large cylinder 3, the cone 4 and the small cylinder 5 to be welded sleeved on the shaft body 2 are subjected to rotary circumferential welding. (In other embodiments, the automatic continuous welding machine 12 can also be replaced by an automatic welding robot, which can automatically find the joint gap of the workpiece to be welded for welding). The bottom of the automatic continuous welding machine 12 is slidably installed on the sliding track 13;

[0078] Two round support parts 6 are installed at intervals in the middle of the shaft body 2.

[0079] A round support sleeve 7 is sleeved on the shaft body 2 on the outer side of each round support component 6 facing the head of the shaft body 2, and the end of the round support sleeve 7 is inclined.

[0080] The shaft body 2 is symmetrically equipped with a supporting power device 70 behind the supporting sleeve 7, which is used to drive the supporting sleeve 7 to move out or retract in the direction of the supporting member 6 (in this embodiment, the supporting power device 70 is a cylinder, and in other embodiments, it can also be a hydraulic cylinder or a reciprocating screw. Since the driving method and structure of driving the supporting sleeve 7 to move by the power device are prior art, they will not be described here in detail);

[0081] The round support member 6 comprises: a fixed back plate 60 and a fan-shaped panel 61 movably connected to the fixed back plate 60 and capable of radially extending and retracting along the surface of the fixed back plate 60;

[0082] The fan-shaped panels 61 are composed of four pieces, and the four fan-shaped panels 61 are assembled to form an integral circle.

[0083] Each fan-shaped panel 61 is provided with a waist-shaped hole 610, and a first connecting hole 600 is opened at a position of the fixed back plate 60 corresponding to the waist-shaped hole 610. After the bolt is screwed into the first connecting hole 600 on the fixed back plate 60, it can play a guiding role when the fan-shaped panel 61 is extended and retracted; further, a cylindrical spring can be sleeved on the bolt, and the cylindrical spring can abut against the fan-shaped panel 61, so that the fan-shaped panel 61 and the fixed back plate 60 can fit tightly together, which is conducive to the radial extension and retraction of the fan-shaped panel 61 on the fixed back plate 60 (not shown in the figure). Because if this circular spring is not installed, the fan-shaped panel 61 may not fit tightly with the fixed back plate 60, resulting in the problem of displacement when the fan-shaped panel 61 is stretched out;

[0084] Each sector panel 61 is provided with reinforcing ribs 611 at intervals, a fixing rod (not shown in the figure) passes between every two adjacent reinforcing ribs 611, and a tension spring (not shown in the figure) is hooked between the fixing rod and the round support sleeve 7 (in other embodiments, the tension spring can be replaced with a rubber belt with tension resilience), when the round support sleeve 7 is displaced and retracted, the spring can pull the sector panel 61 to retract, so that the cylinder body after being rounded and welded can be easily hoisted out;

[0085] The tail end of each sector panel 61 that fits the shaft body 2 is in an inwardly inclined arc shape, that is, the tail end of each sector panel 61 is in an inwardly concave arc shape that matches the end of the corresponding supporting circular sleeve 7;

[0086] When the rounding sleeve 7 is displaced and extended, the fan-shaped panel 61 can be opened by cooperating with the rear end of the fan-shaped panel 61, that is, the large cylinder 3 to be welded can be rounded.

[0087] The edge of the middle opening of the fixed back plate 60 is formed with a concave limiting cavity 601, which is used to play a limiting role when the supporting circular sleeve 7 is displaced and extended to open the fan-shaped panel 61, so as to prevent the supporting circular sleeve 7 from extending too far, resulting in the fan-shaped panel 61 being opened too much and cracking the large cylinder 3;

[0088] The edge of the head end of the fan-shaped panel 61 is chamfered, and the corner of the chamfer is the joint gap where the head end of the large cylinder 3 and the tail end of the cone 4 are tightly connected. The chamfered edge of the head end of the fan-shaped panel 61 can also play a role in positioning the tail end of the cone 4, which is convenient for welding.

[0089] A delivery pipe guide cone 8 is installed outside the supporting round part 6 on the shaft body 2 which is closest to the head of the shaft body 2;

[0090] The conveying pipe guide cone 8 is sleeved on the shaft body 2, and the end of the conveying pipe guide cone 8 is inclined.

[0091] The shaft body 2 is symmetrically equipped with a delivery pipe guide power device 80 behind the supporting cone sleeve. The delivery pipe guide power device 80 is opposite to the supporting circle power device 70. The delivery pipe guide power device 80 is used to drive the delivery pipe guide cone 8 to move out or retract toward the head of the shaft body 2 (in this embodiment, the delivery pipe guide power device 80 is a cylinder. In other embodiments, it can also be a hydraulic cylinder or a reciprocating screw. Since the driving method and structure of driving the delivery pipe guide cone 8 to move by the power device are prior art, they will not be repeated here);

[0092] A pressing plate 9 and a top cone 10 are detachably mounted on the shaft body 2 near the head of the shaft body 2.

[0093] The top cone 10 is sleeved on the shaft body 2, and the end of the top cone 10 facing the round support member 6 is inclined.

[0094] The pressing plate 9 is sleeved on the shaft body 2, and the end of the pressing plate 9 facing the round supporting member 6 is flat.

[0095] A first power device 11 is installed at the head of the shaft body 2, and the first power device 11 is connected to the transmission rod 20 in the inner cavity of the shaft body 2 to drive the transmission rod 20 to move, extend or retract (in this embodiment, the first power device 11 is a cylinder, and in other embodiments, it can also be a hydraulic cylinder or a reciprocating screw. Since the driving method and structure of driving the transmission rod 20 to move by the power device are prior art, they will not be described here in detail);

[0096] The shaft body 2 is provided with a first limiting hole 21 and a second limiting hole 22 at positions corresponding to the pressure plate 9 and the top cone 10. The first limiting hole 21 and the second limiting hole 22 penetrate through the transmission rod 20.

[0097] The outer wall of the top cone 10 is provided with a third limiting hole 101 matching the first limiting hole 21 ; the outer wall of the pressure plate 9 is provided with a fourth limiting hole 90 matching the second limiting hole 22 .

[0098] like Figures 11 to 14 In another embodiment of the automatic welding equipment for the outside of a cylinder shown in the figure, a sliding track 13 is also provided on the other side outside the frame 1, and a polishing part is provided at a position corresponding to the automatic continuous welding machine 12, and the bottom of the polishing part is slidably mounted on the sliding track 13 on the other side outside the frame 1;

[0099] The polishing part includes a polishing machine 14, a large slide 15, a middle slide 16 and a small slide 17. The polishing machine 14 is laterally mounted on the small slide 17. The small slide 17 is connected to the middle slide 16 through a slide 20. The middle slide 16 is connected to the large slide 15 through a slide 20. The central axis of the polishing wheel of the polishing machine 14 is horizontal to the central axis of the welded workpiece and is on the same central axis.

[0100] A blocking plate 18 is provided on the middle slide plate 16, and a pushing portion 19 is placed between the small slide plate 17 and the blocking plate 18. The pushing portion 19 pushes the polishing machine 14 to abut against the weld welded by the automatic continuous welding machine 12 for polishing (the pushing portion is a spring in this embodiment, which is released after shrinking and deforming to push the small slide plate 17, so that the polishing machine 14 abuts against the weld welded by the automatic continuous welding machine 12 for polishing. In other embodiments, it can also be a device such as a micro cylinder or a micro ball screw that can push the small slide plate 17);

[0101] Since the shaft body 2 is driven by the driving component 1000 of the frame to rotate the shaft body 2, that is, when the large cylinder 3, the cone 4 and the small cylinder 5 on the shaft body 2 are subjected to rotary circumferential welding, the polishing component located opposite to the automatic continuous welding machine 12 can polish the weld after welding. The rotation direction of the polishing machine is tangential to the rotation direction of the shaft body 2. In addition, the central axis of the polishing wheel of the polishing machine 14 is horizontal with the central axis of the welded workpiece, and the structure is on the same central axis. This will make the polishing effect of the polishing machine better, and the continuous welding machine can perform continuous welding and polishing at the same time.

[0102] like Fig.12 and 13 As shown, a three-stage slide plate connection structure is adopted, which allows the polishing machine 14 to polish the weld between the large cylinder 3 and the cone 4, and also to polish the weld between the cone 4 and the small cylinder 5.

[0103] like Fig.15 In another embodiment of the automatic welding equipment for the outside of a cylinder shown, according to the structure and principle recorded in the above embodiment, in certain application scenarios, when vertical welding is required, corresponding structural modifications can be made, such as replacing a base, standing the shaft body 2 up and fixing it on it, and then installing the corresponding supporting circular component 6 on the shaft body, so that the cylinder can be welded vertically, which has a wider applicability.

[0104] In some other embodiments, the automatic welding equipment in the present invention is not limited to the three-section workpiece welding application scenarios such as a large cylinder, a cone and a small cylinder. According to the structure and principle recorded in the above embodiments, corresponding structural modifications can be made according to actual requirements. For example, more round support components are added to the shaft body, which can be applied to the welding between multiple sections of circular cylinders; or the edges of the head end of the fan-shaped panel of the round support component are chamfered on both sides to enable welding between two mirror-image cones.

[0105] When the present invention is used, the steps are as follows:

[0106] The shaft support frame 1001 of the front section of the frame 1 of the automatic welding equipment is removed;

[0107] The large cylinder 3 with welded longitudinal seams is hoisted horizontally into the frame 1 and placed on the rounding component 6. The cone 4 with welded longitudinal seams is hoisted horizontally into the frame 1. The tail end of the cone 4 is against the chamfer of the rounding component 6 closest to the head of the shaft body 2, and the head end of the cone 4 is against the top cone 10. The rounding power device 70 is started, and the rounding sleeve 7 is displaced and extended. The fan-shaped panel 61 can be opened by cooperating with the tail end of the fan-shaped panel 61. The inside of the large cylinder 3 at both ends is rounded. The limiting rod is passed through the third limiting hole 101 and the first limiting hole 21 of the top cone 10, and the first power device 11 is started. The top cone 10 pushes the tail end of the cone 4 close to the head end of the large cylinder 3, so that the two are closely connected.

[0108] The shaft support frame 1001 at the front section of the frame 1 of the automatic welding equipment supports the head of the shaft body 2;

[0109] The drive component 1000 of the start frame 1 drives the shaft body 2 to rotate, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded, and then welding is started, and the initial spot welding is performed to fix the position, and then continuous welding is performed;

[0110] After the cone 4 and the large cylinder 3 are welded, the driving component 1000 of the frame 1 is suspended;

[0111] The supporting power device 70 is retracted, the supporting sleeve 7 is displaced and retracted, the fan-shaped panel 61 is retracted synchronously, the first power device 11 is retracted, the top cone 10 is removed, and the conveying pipe guide power device 80 is started to displace the conveying pipe guide cone 8 toward the head of the shaft body 2, and the cone 4 and the large cylinder 3 are loosened;

[0112] Remove the shaft support frame 1001 at the front section of the frame 1 of the automatic welding equipment, hoist the small cylinder 5 horizontally into the frame 1, put the pressing plate 9 in, and then put the shaft support frame 1001 to support the head of the shaft body 2 again, pass the limiting rod through the fourth limiting hole 90 and the second limiting hole 22 of the pressing plate 9, start the first power device 11, and the pressing plate 9 moves the tail end of the small cylinder 5 close to the head end of the cone 4, so that the two are closely connected;

[0113] The drive component 1000 of the start frame 1 drives the shaft body 2 to rotate, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded, and then welding is started, and the initial spot welding is performed to fix the position, and then continuous welding is performed;

[0114] After the welding of the small cylinder 5 and the cone 4 is completed, the driving component 1000 of the frame 1 is suspended;

[0115] The shaft support frame 1001 of the front section of the frame 1 of the automatic welding equipment is removed;

[0116] The first power device 11 is retracted, the pressure plate 9 is removed, and the workpiece formed as a whole after the large cylinder 3, the cone 4 and the small cylinder 5 are welded is hoisted and moved outward, and then the next component is welded, and this process is repeated.

[0117] The present invention also provides a method for automatic welding of the outer part of a cylinder, comprising the following steps:

[0118] Cut out the plates, cut out the plates of the large cylinder 3, the cone 4 and the small cylinder 5 respectively, and clean the surroundings of the plates;

[0119] Plate rolling: rolling the plates of the large cylinder 3, the cone 4 and the small cylinder 5, and grinding both sides of the welds to be welded;

[0120] After clamping and fixing, longitudinal welding of the large cylinder 3, cone 4 and small cylinder 5 is performed;

[0121] The shaft support frame 1001 of the front section of the frame 1 of the automatic welding equipment is removed;

[0122] The large cylinder 3 with welded longitudinal seams is hoisted horizontally into the frame 1 and placed on the rounding component 6. The cone 4 with welded longitudinal seams is hoisted horizontally into the frame 1. The tail end of the cone 4 is against the chamfer of the rounding component 6 closest to the head of the shaft body 2, and the head end of the cone 4 is against the top cone 10. The rounding power device 70 is started, and the rounding sleeve 7 is displaced and extended. The fan-shaped panel 61 can be opened by cooperating with the tail end of the fan-shaped panel 61. The inside of the large cylinder 3 at both ends is rounded. The limiting rod is passed through the third limiting hole 101 and the first limiting hole 21 of the top cone 10, and the first power device 11 is started. The top cone 10 pushes the tail end of the cone 4 close to the head end of the large cylinder 3, so that the two are closely connected.

[0123] The shaft support frame 1001 at the front section of the frame 1 of the automatic welding equipment supports the head of the shaft body 2;

[0124] The drive component 1000 of the start frame 1 drives the shaft body 2 to rotate, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded, and then welding is started, and the initial spot welding is performed to fix the position, and then continuous welding is performed;

[0125] After the cone 4 and the large cylinder 3 are welded, the driving component 1000 of the frame 1 is suspended;

[0126] The supporting power device 70 is retracted, the supporting sleeve 7 is displaced and retracted, the fan-shaped panel 61 is retracted synchronously, the first power device 11 is retracted, the top cone 10 is removed, and the conveying pipe guide power device 80 is started to displace the conveying pipe guide cone 8 toward the head of the shaft body 2, and the cone 4 and the large cylinder 3 are loosened;

[0127] Remove the shaft support frame 1001 at the front section of the frame 1 of the automatic welding equipment, hoist the small cylinder 5 horizontally into the frame 1, put the pressing plate 9 in, and then put the shaft support frame 1001 to support the head of the shaft body 2 again, pass the limiting rod through the fourth limiting hole 90 and the second limiting hole 22 of the pressing plate 9, start the first power device 11, and the pressing plate 9 moves the tail end of the small cylinder 5 close to the head end of the cone 4, so that the two are closely connected;

[0128] The drive component 1000 of the start frame 1 drives the shaft body 2 to rotate, and the welding gun nozzle is placed at the joint gap of the workpiece to be welded, and then welding is started, and the initial spot welding is performed to fix the position, and then continuous welding is performed;

[0129] After the welding of the small cylinder 5 and the cone 4 is completed, the driving component 1000 of the frame 1 is suspended;

[0130] The shaft support frame 1001 of the front section of the frame 1 of the automatic welding equipment is removed;

[0131] The first power device 11 is retracted, the pressure plate 9 is removed, and the workpiece formed as a whole after the large cylinder 3, the cone 4 and the small cylinder 5 are welded is hoisted and moved outward, and then the next component is welded, and this process is repeated.

[0132] The present invention adopts a horizontal automatic welding device to weld the large cylinder 3, cone 4 and small cylinder 5 of the mixing equipment, which solves the problem that when processing a relatively large mixing equipment, when the height of the cylinder and the cone 4 are both high, the overhead crane is limited by the height of the processing workshop and often cannot lift the cone 4 to the top of the cylinder, and other equipment is needed for lifting, which makes the processing process very troublesome;

[0133] The continuous welding machine is used for automatic welding, and there is no need for manual welding of the cylinder and the cone 4, which is more efficient and the processing process is faster;

[0134] Using continuous welding machines for automatic welding, the welding quality can be managed in a standardized manner and the inspection process can be faster;

[0135] A rounding component 6 is used to round the large cylinder 3 before welding to avoid deformation of the large cylinder 3, especially when welding a cylinder with a large inner diameter, the welding accuracy can be higher. For example, when welding a cylinder with an inner diameter of 2050MM, the welding accuracy of the cylinder can reach ±0.15MM.

[0136] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An automatic welding device for the outside of a cylinder, characterized in that: include: A frame (1); a driving component (1000) is placed at the rear section of the frame (1) to form a driving area; a detachable shaft support frame (1001) is installed at the front section of the frame (1); a shaft body (2) is placed on the frame (1) and driven by the driving component (1000) to rotate the shaft body (2); a head of the shaft body (2) is supported by the shaft support frame (1001), so that the shaft body (2) is placed in parallel and can rotate; Two rounding parts (6) are installed at intervals on the middle part of the shaft body (2) for rounding the workpiece to be welded. A rounding sleeve (7) is sleeved on the shaft body (2) on the outer side of each rounding part (6) facing the head of the shaft body (2). The shaft body (2) is symmetrically installed with a rounding power device (70) behind the rounding sleeve (7) for driving the rounding sleeve (7) to move, extend or retract in the direction of the rounding part (6). A conveying pipe guide cone (8) is installed outside the rounding part (6) closest to the head of the shaft body (2) on the shaft body (2) for pushing the workpiece to be welded loose; a pressure plate (9) and a top cone (10) are detachably sleeved and installed in sequence at a position close to the head of the shaft body (2). The top cone (10) pushes the workpiece to be welded close to another workpiece to be welded so that the two are closely connected; the pressure plate (9) pushes the workpiece to be welded close to another workpiece to be welded so that the two are closely connected; The end of the supporting circular sleeve (7) is inclined; The circular support component (6) comprises: a fixed back plate (60) and a fan-shaped panel (61) movably connected to the fixed back plate (60) and capable of radially extending and retracting along the surface of the fixed back plate (60); the fan-shaped panel (61) has an even number of pieces, which are assembled together to form an integral circular shape; Each fan-shaped panel (61) is provided with a waist-shaped hole (610), and a first connecting hole (600) is opened at a position of the fixed back plate (60) corresponding to the waist-shaped hole (610); Each sector-shaped panel (61) is provided with reinforcing ribs (611) at intervals, a fixing rod passes between every two adjacent reinforcing ribs (611), and a tension rebound member is hooked between the fixing rod and the supporting circular sleeve (7); The end of the conveying pipe guide cone (8) is inclined, and the shaft body (2) is symmetrically equipped with a conveying pipe guide power device (80) behind the supporting cone sleeve. The conveying pipe guide power device (80) is opposite to the supporting circle power device (70), and the conveying pipe guide power device (80) is used to drive the conveying pipe guide cone (8) to move, extend or retract toward the head of the shaft body (2); The end of the top cone (10) facing the round support component (6) is inclined, and the end of the pressure plate (9) facing the round support component (6) is flat. A first power device (11) is installed at the head of the shaft body (2). The first power device (11) is connected to the transmission rod (20) in the inner cavity of the shaft body (2) to drive the transmission rod (20) to move, extend or retract. The shaft body (2) is provided with a first limiting hole (21) and a second limiting hole (22) at the position corresponding to the pressure plate (9) and the top cone (10). The first limiting hole (21) and the second limiting hole (22) pass through the transmission rod (20). The outer wall of the top cone (10) is provided with a matching third limiting hole (101) at the position corresponding to the first limiting hole (21); the outer wall of the pressure plate (9) is provided with a matching fourth limiting hole (90) at the position corresponding to the second limiting hole (22). The automatic continuous welding machine (12) is arranged outside the frame (1) and places the welding gun nozzle at the joint gap of the workpiece to be welded for welding.

2. The automatic welding equipment for the outer part of a cylinder according to claim 1, characterized in that: The tail end of each fan-shaped panel (61) that fits the shaft body (2) is in an inwardly inclined arc shape, that is, the tail end of each fan-shaped panel (61) is in an inwardly recessed arc shape that matches the end of the corresponding rounding sleeve (7); when the rounding sleeve (7) is displaced and extended, the fan-shaped panel (61) can be opened by matching with the tail end of the fan-shaped panel (61) to round the workpiece to be welded.

3. The automatic welding equipment for the outer part of a cylinder according to claim 1, characterized in that: An inwardly concave limiting cavity (601) is formed at the edge of the middle opening of the fixed back plate (60), which plays a limiting role when the supporting circular sleeve (7) is displaced and extended to support the fan-shaped panel (61).

4. The automatic welding equipment for the outer part of a cylinder according to claim 1, characterized in that: The edge of the head end of the fan-shaped panel (61) is chamfered, and the corner of the chamfer is the joint gap where the two ends of the two workpieces to be welded are butt-jointed.

5. A method for automatic welding of the outer part of a cylinder, characterized in that: Using a cylinder body external automatic welding device according to any one of claims 1 to 4, the cylinder body external automatic welding method The following steps are involved: Cut out the plates A, B and C respectively, and clean the surrounding areas of the plates; Plate rolling, rolling the plate, grinding both sides of the welds to be welded; After clamping and fixing, longitudinal welding of the rolled A, B and C plates is performed; The shaft support frame (1001) at the front section of the frame (1) of the automatic welding equipment is removed; The workpiece A with welded longitudinal seams is hoisted transversely into the frame (1) and placed on the rounding component (6); the workpiece B with welded longitudinal seams is hoisted transversely into the frame (1), the tail end of the workpiece B abuts against the chamfer of the rounding component (6) closest to the head of the shaft body (2), the head end of the workpiece B abuts against the top cone (10), the rounding power device (70) is started, the rounding sleeve (7) is displaced and extended, and the fan-shaped panel (61) can be opened by cooperating with the tail end of the fan-shaped panel (61), the inside of the front and rear ends of the workpiece A is rounded, the third limiting hole (101) and the first limiting hole (21) of the top cone (10) are passed through the limiting rod, the first power device (11) is started, and the top cone (10) moves the tail end of the workpiece B close to the head end of the workpiece A, so that the two are closely connected; The shaft support frame (1001) at the front section of the frame (1) of the automatic welding equipment supports the head of the shaft body (2); The driving component (1000) of the starter frame (1) drives the shaft body (2) to rotate, and after the welding gun nozzle is placed in correspondence with the joint gap of the workpiece to be welded, welding is started, and preliminary spot welding is performed to fix the position, and then continuous welding is performed; After the welding of workpiece B and workpiece A is completed, the driving component (1000) of the frame (1) is paused; The rounding power device (70) is retracted, the rounding sleeve (7) is displaced and retracted, the fan-shaped panel (61) is retracted synchronously, the first power device (11) is retracted, the top cone (10) is removed, and the conveying pipe guide power device (80) is started to displace the conveying pipe guide cone (8) toward the head of the shaft body (2), and the workpiece B and the workpiece A are loosened; The shaft support frame (1001) at the front section of the frame (1) of the automatic welding equipment is removed, the workpiece C is hoisted horizontally into the frame (1), the pressing plate (9) is placed, and the shaft support frame (1001) is again supported to support the head of the shaft body (2), a limiting rod is passed through the fourth limiting hole (90) and the second limiting hole (22) of the pressing plate (9), the first power device (11) is started, and the pressing plate (9) moves the tail end of the workpiece C close to the head end of the workpiece B, so that the two are closely connected; The driving component (1000) of the starter frame (1) drives the shaft body (2) to rotate, and after the welding gun nozzle is placed in correspondence with the joint gap of the workpiece to be welded, welding is started, and preliminary spot welding is performed to fix the position, and then continuous welding is performed; After the welding of workpiece C and workpiece B is completed, the driving component (1000) of the frame (1) is paused; The shaft support frame (1001) at the front section of the frame (1) of the automatic welding equipment is removed; The first power device (11) is retracted, the pressing plate (9) is removed, the workpiece formed as a whole after the welding of workpieces A, B and C is hoisted and moved outward, and then the next component is welded, and the process is repeated.

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