CN116944866A - An automatic welding system for steel cylinders - Google Patents

Abstract

The invention discloses an automatic welding system for steel cylinders, belonging to the field of welding. An automatic welding system for steel cylinders includes a first support device and a second support device. The first support device is provided with a grinding device and an internal clamping device; The grinding device is used to grind the outer wall of the cylinder; the second support device is provided with an external clamping device; the internal clamping device includes: a rotating shaft, a driving member and a tightening assembly; the driving member and The bracing component is connected so that the driving member and the bracing component rotate synchronously; the rotating shaft is used to drive the bracing component to rotate through the driving component so that the cylinder can rotate around a fixed axis; the bracing component is clamped from the inner wall of the cylinder Hold the cylinder and rotate it around the fixed axis. The grinding device grinds the outer wall of the cylinder to form a smooth outer wall. It can realize that after the outer walls of the two bodies of the cylinder are connected to each other, the shapes will match each other, improving welding. Effect.

Description

An automatic welding system for steel cylinders

Technical field

The present invention relates to the field of welding, and more specifically, to an automatic welding system for steel cylinders.

Background technique

The automatic cylinder welding system refers to the process of obtaining two cylinder bodies with one opening through casting, then connecting the openings on the two bottle bodies to each other, and then welding the outer walls of the two bottle bodies together to obtain a cylinder;

Since the bottle body is cast, the outer wall surface is very rough. When the two openings are connected, an uneven surface will be produced at the joint, which will cause the welding layer to be too thin or too thick during welding. , affecting the welding effect. If the outer wall surface of the bottle is directly polished, there will be errors in the polishing of the outer surface, which will easily lead to errors in the shape of the openings of the two polished bottles, thus causing the shape of the two openings. If it is different, then there will still be the problem that the welding layer is too thin or too thick during welding, which affects the welding effect.

Contents of the invention

In view of the problems existing in the prior art, the purpose of the present invention is to provide an automatic cylinder welding system, which can realize that after the outer wall surfaces of two cylinder bodies are connected to each other, the shapes match each other, thereby improving the welding effect.

In order to solve the above problems, the present invention adopts the following technical solutions.

An automatic welding system for steel cylinders, including a first support device and a second support device. The first support device is provided with a grinding device and an internal clamping device; the grinding device is used to polish the outer wall of the cylinder; the internal The clamping device is used to support and clamp the inner wall of the cylinder; the second support device is provided with an external clamping device; the external clamping device is used to support and clamp the outer wall of the cylinder; the inner The clamping device includes: a rotating shaft, a driving member and a supporting assembly; the driving member is connected to the supporting assembly so that the driving member and the supporting assembly rotate synchronously; the rotating shaft is used to drive the supporting assembly through the driving member Rotate so that the cylinder can rotate around a fixed axis; the holding component clamps the cylinder from the inner wall of the cylinder to rotate the cylinder around the fixed axis, and the grinding device grinds the outer wall of the cylinder to form a smooth outer wall surface; the exterior The clamping device clamps the smooth outer wall surface and the external clamping device is provided with a driving part to rotate the two sections of the cylinder around the same axis; the second support device is provided with a welding part, and the welding part is used for The two sections of the cylinder rotating around the same axis are welded.

Since the steel bottle is formed by welding two sections of the bottle body, and the two sections of the bottle body are obtained by casting or forging, the outer surface of the bottle body will have a large roughness. If the two sections of the bottle body are directly welded, it may There is a phenomenon that the two bottle bodies cannot be perfectly connected, resulting in poor welding quality. By first clamping the inner wall of the cylinder, the two bottle bodies rotate around the same axis. During the rotation of the two bottle bodies, the polishing The device is used to polish the outer wall of the bottle to obtain a smooth outer wall surface. The smooth outer wall surfaces of the two bottles are formed on the same axis, that is, the smooth outer wall surfaces of the two bottles The distance from any point on and to an axis is the same, and then the external clamping device clamps the smooth outer wall surface, then this is a smooth outer wall circular surface rotating around the upper axis, and the circular runout tolerance is very small When welding two sections of bottles, the two bottles are close to each other, and the two bottles rotate at the same time. During the rotation of the two bottles, the smooth outer wall surface of the connection between the two bottles They match each other and there will be no high unevenness, which can better ensure the quality of the welding, that is, the thickness of the welding layer after welding can be guaranteed, which will make the quality of the welding better and the thickness of the welding layer at the same time. There will be no phenomenon of thinning one piece after another. The reason why the thickness of the welding layer will be inconsistent in the traditional welding method is because the first welding may cause pits in the welding layer in some places due to the uneven outer wall of the cylinder, thus forming If the welding layer is thinner or thicker than the outer wall surface, the welding layer will be unsightly. However, the present invention makes the surface of the welding layer smooth and flat, making the welded cylinder more beautiful.

Further, the bracing assembly includes: a transmission plate, which is slidably installed on the rotation shaft; the transmission plate and the rotation shaft rotate synchronously; a plurality of transmission connecting rods are hingedly mounted on the transmission plate. ; The transmission connecting rod is hingedly provided with a transmission bracket; the transmission bracket is provided with a rotating plate, and the rotating plate is fixedly connected to the rotating shaft; the transmission bracket is provided with a guide rod, and the guide rod is connected to the rotating shaft; The rotating plate is slidingly connected; the transmission bracket is provided with a contact piece, and the contact piece is used to abut with the inner wall of the cylinder; the transmission plate is provided with a second cylinder, and the second cylinder is used to drive the The transmission plate moves along the axial direction of the rotating shaft.

Through the arrangement of multiple transmission connecting rods, when it is necessary to contact and support the inner wall of the cylinder, the multiple transmission connecting rods expand, and conversely, the multiple transmission connecting rods shrink, so that the support and contact of the cylinder can be achieved. It achieves no contact with the cylinder, so that the cylinder can be put in. At the same time, multiple transmission connecting rods are unfolded at the same time. The cylinder can also be automatically centered. Multiple transmission connecting rods are unfolded at the same time, and the guide rod is used to align one end of the transmission connecting rod. If the transmission bracket is guided on the cylinder, the transmission connecting rod, guide rod and rotating shaft will form a triangular support, making the support of the cylinder more stable.

Further, the contact piece includes: a first contact wheel, a second contact wheel and a fixed mandrel passing through the first contact wheel and the second contact wheel; the shapes of the first contact wheel and the second contact wheel match; The first contact wheel and the second contact wheel are both rotatably mounted on a fixed mandrel; a second hinge block is formed in the middle of the fixed mandrel; and a first hinge block is formed on one edge of the fixed mandrel. ; The first hinge block is provided with a second drive motor; the second drive motor is used to drive the movement of the first hinge block so that the fixed mandrel can rotate around the second hinge block; the fixed mandrel revolves around the second The rotation of the hinge block can cause the first contact wheel or the second contact wheel to contact the inner wall of the cylinder.

Only one of the first contact wheel and the second contact wheel will come into contact with the inner wall of the cylinder. When one of them wears out during use, the fixed mandrel will rotate, causing the first contact wheel that was originally in contact with the inner wall of the cylinder to move behind the second contact wheel. The second contact wheel is far away from the cylinder, but the other one is in contact with the cylinder, so that it can be automatically replaced when wear occurs, thereby extending the use time. The first contact wheel and the second contact wheel are both connected to the fixed mandrel. Rotating connection, then after the first contact wheel or the second contact wheel contacts the inner wall of the cylinder, the first contact wheel or the second contact wheel is driven by the axial force to rotate the cylinder, and the first contact wheel or the second contact wheel Rolling can occur on the inner wall of the cylinder, thereby changing the position where the first contact wheel or the second contact wheel contacts the inner wall of the cylinder. This can prevent the first contact wheel or the second contact wheel from being in constant contact with the inner wall of the cylinder for a long time. In order to prevent wear, through multi-point contact, the time for wear to occur is reduced, making it less prone to wear.

Further, a limiting plate is formed on the fixed mandrel; a first thrust bearing is provided at the first contact wheel, and a spring is provided between the first thrust bearing and the limiting plate; the first The contact wheel is close to the first hinge block; the second contact wheel is away from the first hinge block; the first contact wheel is in contact with the inner wall of the cylinder, and there is a gap between the second contact wheel and the inner wall of the cylinder. A pressure detector is installed on the first thrust bearing; a preset value is set on the pressure detector; when the detection value on the pressure detector is lower than the predicted value, the second drive motor drives the third A hinged block moves.

Since when the first contact wheel or the second contact wheel drives the cylinder to rotate, the first contact wheel or the second contact wheel receives an axial force, then a force will be generated between the first contact wheel and the fixed mandrel, which is normal In this case, the first contact wheel will be displaced relative to the fixed mandrel in the same axial direction as the fixed mandrel. However, through the settings of the spring, the limiting plate and the first thrust bearing, the first contact wheel will be compressed when it is displaced. The spring will increase the value detected by the pressure detector, so that it can be known that the first contact wheel is in contact with the inner wall of the cylinder. When the first contact wheel is worn, the first contact wheel does not contact or does not contact the inner wall of the cylinder. The friction force is very small, so the first contact wheel will slip against the inner wall of the cylinder, and the pressure exerted by the first contact wheel on the pressure detector through the first thrust bearing and spring will decrease, which will cause the fixed mandrel to rotate. , thus realizing the replacement of the first contact wheel and the replacement of the second contact wheel, so that after one wheel is worn, the other wheel can be replaced, thereby improving the service life.

Further, a plurality of insertion rods are formed on the first thrust bearing, and a sliding connection is formed between the insertion rods and the limiting plate, so that the insertion rods guide the first thrust bearing.

By guiding the first thrust bearing and the limit plate through the insertion rod, the spring can only receive axial force and not the radial force of deflection, thereby better ensuring the accuracy of the values detected by the pressure detector. .

Further, the external clamping device is provided with a first moving device and a second moving device; the external clamping device is provided with two groups, and the second moving device is used to drive the external clamping device to approach from one side. cylinder, so that the external clamping device contacts and clamps the cylinder; the first moving device is used to control the two groups of external clamping devices to move closer to or away from each other, so that the two sections of the cylinder on the two groups of external clamping devices are mutually exclusive. move closer or farther away from each other.

It is possible to have a gap between the two bottles, which is enough to accommodate part of the second cylinder. At this time, the outer walls of the two bottles are polished to form a smooth outer wall round surface; after the two bottles are clamped through an external clamping device, When clamping the smooth outer wall of the bottle, the two sets of external clamping devices can be brought close to each other to dock the two bottles, and then weld.

Further, a third moving device is provided at the first supporting device, the third moving device is used to connect with the second supporting device and the welding piece, and the third moving device is used to drive the The second supporting device and the welding part are used to change the positions of the second supporting device and the welding part; the second supporting device is connected to the internal clamping device.

By changing the positions of the second supporting device and the welding part, after polishing the two bottle bodies, the second supporting device and the internal clamping device can be moved away, so that the welding part can be moved to the junction of the two bottle bodies, and then welded parts for welding.

Compared with the existing technology, the advantages of the present invention are:

1. This solution realizes that after the outer walls of the two cylinder bodies are connected to each other, the shapes will match each other, improving the welding effect.

2. Through the arrangement of multiple transmission connecting rods, when it is necessary to contact and support the inner wall of the cylinder, the multiple transmission connecting rods expand, and conversely, the multiple transmission connecting rods shrink to achieve support and contact with the cylinder. It can also achieve no contact with the cylinder and can also automatically center the cylinder.

3. By unfolding the transmission connecting rod at the same time, and the guide rod is used to guide the transmission bracket on one end of the transmission connecting rod, then the transmission connecting rod, guide rod and rotating shaft will form a triangular support, making the support of the cylinder more stable.

4. When the first contact wheel wears and the first contact wheel does not contact the inner wall of the cylinder or contacts but the friction force is very small, then the first contact wheel will slip against the inner wall of the cylinder, then the first contact wheel will slip. The pressure applied to the pressure detector through the first thrust bearing and spring will reduce, and then the fixed mandrel will rotate, thereby realizing the replacement of the first contact wheel and the replacement of the second contact wheel, thereby replacing one wheel with another. Replace with another wheel when it wears out, thus increasing service life.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic structural diagram of the grinding device of the present invention and some surrounding parts;

Figure 3 is a schematic structural diagram of the internal clamping device of the present invention;

Figure 4 is a schematic structural diagram of the contact piece and some surrounding parts of the present invention;

Figure 5 is a schematic structural diagram of the external clamping device of the present invention viewed from another angle;

Figure 6 is a schematic structural diagram of the transmission plate and some surrounding parts of the present invention;

Figure 7 is a schematic structural diagram of the second moving device and some surrounding parts of the present invention;

Figure 8 is a schematic structural diagram of the third moving device and some surrounding parts of the present invention.

Description of numbers in the figure:

First supporting device 1, first moving device 2, second moving device 3, external clamping device 4, grinding device 5, internal clamping device 6, second supporting device 7, third moving device 8, welding piece 9, The first driving screw 21, the first driving nut 22, the first moving base 31, the second motor 32, the second driving screw 33, the second driving nut 34, the second moving base 41, the first clamping wheel 42, Rotating arm 43, second clamping wheel 44, first cylinder 51, first bracket 52, moving frame 53, grinding roller 54, first drive motor 55, rotating shaft 60, second bracket 61, second cylinder 62, connection Part 63, transmission plate 64, transmission connecting rod 65, transmission bracket 66, guide rod 67, contact piece 68, drive piece 69, third drive motor 81, third drive screw 82, third drive nut 83, fourth drive Nut 84, rotating plate 601, connecting seat 631, connecting plate 632, second driving motor 680, first hinge block 681, fixed spindle 682, first contact wheel 683, second contact wheel 684, second hinge block 685, The first thrust bearing 686, the spring 687, the limiting plate 688, and the insertion rod 689.

Detailed ways

See Figure 1-8,

An automatic welding system for steel cylinders, including a first support device 1 and a second support device 7. The first support device 1 is provided with a grinding device 5 and an internal clamping device 6; the grinding device 5 is used for welding steel cylinders. The outer wall is polished; the internal clamping device 6 is used to support and clamp the inner wall of the cylinder; the second support device 7 is provided with an external clamping device 4; the external clamping device 4 is used to clamp the cylinder The outer wall supports and clamps; the internal clamping device 6 includes: a rotating shaft 60, a driving member 69 and a holding assembly; the driving member 69 is connected to the holding assembly so that the driving member 69 is synchronized with the holding assembly Rotation; the rotating shaft 60 is used to drive the support assembly to rotate through the driving member 69 so that the cylinder can rotate around a fixed axis; the support assembly clamps the cylinder from the inner wall of the cylinder to allow the cylinder to rotate around the fixed axis. The grinding device 5 grinds the outer wall of the cylinder to form a smooth outer wall surface; the external clamping device 4 clamps the smooth outer wall surface and a driving part is provided at the external clamping device 4 to make the two sections of the cylinder revolve around the same axis. Rotation; the second support device 7 is provided with a welding piece 9, which is used to weld two sections of the cylinder that rotate around the same axis.

The internal clamping device 6 also includes a second bracket 61, the driving member 69 is installed on the second bracket 61, the rotation shaft 60 is rotationally connected to the second bracket 61; There are multiple rod bodies. A first bracket 52 is fixedly installed on the rod body. A first cylinder 51 is installed on the first bracket 52. The output end of the first cylinder 51 is installed with a movable frame 53. The first cylinder 51 is used to drive the movable frame 53 to move downward and Move up. The grinding roller 54 is rotatably installed on the moving frame 53. The end of the grinding roller 54 is provided with a first driving motor 55. The output end of the first driving motor 55 is connected to the grinding roller 54. The first driving motor 55 is installed on the moving frame 53. , the first drive motor 55 is used to drive the grinding roller 54 to rotate, and the grinding roller 54 is used to grind the outer wall of the cylinder.

Specifically, the holding assembly includes: a transmission plate 64, which is slidably installed on the rotation shaft 60; the transmission plate 64 and the rotation shaft 60 rotate synchronously; the transmission plate 64 is hinged A plurality of transmission links 65 are installed; a transmission bracket 66 is hingedly provided at the transmission link 65; a rotating plate 601 is provided at the transmission bracket 66, and the rotating plate 601 is fixedly connected to the rotating shaft 60; The transmission bracket 66 is provided with a guide rod 67, and a chute is provided in the rotating plate 601, so that the guide rod 67 is slidingly connected to the rotating plate 601; the guide rod 67 is fixedly connected to the transmission bracket 66, and the transmission bracket 66 is provided with a guide rod 67. There is a contact piece 68, which is used to contact the inner wall of the cylinder; the transmission plate 64 is provided with a second cylinder 62, and the second cylinder 62 is installed on the second bracket 61 and the second cylinder 62 It is used to drive the transmission plate 64 to move along the axial direction of the rotation shaft 60 . The transmission plate 64 is provided with a connecting piece 63. The connecting piece 63 includes: a connecting seat 631 and a connecting plate 632. The connecting seat 631 is sleeved on the outside of the driving plate 64, the connecting plate 632 is in contact with the driving plate 64, and the connecting plate 632 is away from the driving plate. The end surface of 64 is connected with the second cylinder 62, so that the position of the second cylinder 62 is immovable. The second cylinder 62 pushes the connecting plate 632, and the connecting plate 632 pushes the transmission plate 64, so that the second cylinder 62 can be immobile. The transmission plate 64 can be connected in a rotary manner.

More specifically, the contact member 68 includes: a first contact wheel 683, a second contact wheel 684, and a fixed mandrel 682 penetrating the first contact wheel 683 and the second contact wheel 684; the first contact wheel 683 and the second contact wheel 684. The shapes of the two contact wheels 684 match; the first contact wheel 683 and the second contact wheel 684 are both rotatably mounted on the fixed mandrel 682; a second hinge block 685 is formed in the middle of the fixed mandrel 682; so A first hinge block 681 is formed on one edge of the fixed mandrel 682; a second drive motor 680 is provided at the first hinge block 681; the second drive motor 680 is used to drive the first hinge block 681 to move. The fixed core shaft 682 can rotate around the second hinge block 685; the fixed core shaft 682 can rotate around the second hinge block 685 to make the first contact wheel 683 or the second contact wheel 684 contact the inner wall of the cylinder.

More specifically, a limiting plate 688 is formed on the fixed mandrel 682; a first thrust bearing 686 is provided at the first contact wheel 683, and a first thrust bearing 686 is provided between the first thrust bearing 686 and the limiting plate 688. There is a spring 687; the first contact wheel 683 is close to the first hinge block 681; the second contact wheel 684 is away from the first hinge block 681; the first contact wheel 683 is in contact with the inner wall of the cylinder, so There is a gap between the second contact wheel 684 and the inner wall of the cylinder, and a pressure detector is installed on the first thrust bearing 686; a preset value is set on the pressure detector; when the detection value on the pressure detector is low When predicting the value, the second driving motor 680 drives the first hinge block 681 to move. A plurality of inserting rods 689 are formed on the first thrust bearing 686 , and a sliding connection is formed between the inserting rods 689 and the limiting plate 688 so that the inserting rods 689 guide the first thrust bearing 686 .

Further, the external clamping device 4 is provided with a first moving device 2 and a second moving device 3; the external clamping device 4 is provided with two groups, and the second moving device 3 is used to drive the external clamping device. The device 4 approaches the cylinder from one side, so that the external clamping device 4 contacts and clamps the cylinder; the first moving device 2 is used to control the two groups of external clamping devices 4 to approach or move away from each other, so that the two groups of external clamping devices 4 The two sections of cylinders on the clamping device 4 move closer to or farther away from each other.

The first moving device 2 includes: a first driving screw 21 and a first driving nut 22. There are two first driving screws 21. The first driving screw 21 is rotatably installed on the first supporting device 1. Two first driving nuts 22 are installed on the screw 21. Threads are provided on both ends of the first driving screw 21, and the threads rotate in opposite directions. The first driving nuts 22 are threadedly connected to the first driving screw 21. The first driving screw 21 is threaded. A first motor is installed at the support device 1, and the first motor is used to drive the first driving screw 21 to rotate, so that the first driving nuts 22 move closer to each other or move away from each other; the second moving device 3 includes a first moving base 31, a second moving base 31, and a second moving base 31. The motor 32, the second driving screw 33 and the second driving nut 34. The first moving base 31 is fixedly installed on the first driving nut 22. There are two first moving bases 31, so that the two first moving bases 31 can Approach each other or move away from each other; two second driving screws 33 are rotatably installed on the first moving base 31, two second driving nuts 34 are installed on the second driving screw 33, and openings are provided on both ends of the second driving screw 33. The threads are in opposite directions. The first moving base 31 is provided with a second motor 32. The second motor 32 is used to drive the second driving screw 33 to rotate. The rotation of the second driving screw 33 can cause the second driving nut 34 to rotate. move away from each other or move closer to each other. The external clamping device 4 includes: a second moving base 41, a first clamping wheel 42, a rotating arm 43 and a second clamping wheel 44. The second moving base 41 is fixedly installed on the second driving nut 34, and two second The movable seats 41 can be close to each other or far away from each other. The first clamping wheel 42 is installed on the second movable seat 41. The first clamping wheel 42 can rotate relative to the second movable seat 41. The first clamping wheel 42 is used for connecting with the cylinder. The outer wall is in contact; a rotating arm 43 is also installed on the second moving base 41. The rotating arm 43 is rotationally connected to the second moving base 41, and a first rotating motor is provided on the second moving base 41. The first rotating motor is used to drive the rotating arm. 43 rotates, a second clamping wheel 44 is installed on the rotating arm 43, and a second rotating motor is installed on the rotating arm 43. The second rotating motor is used to drive the second clamping wheel 44 to rotate. The second clamping wheel 44 is connected with the cylinder. The inner walls are in contact, and the rotation of the second clamping wheel 44 can drive the cylinder to rotate.

Specifically, the first supporting device 1 is provided with a third moving device 8, and the third moving device 8 is used to connect with the second supporting device 7 and the welding piece 9. The third moving device 8 8 is used to drive the second supporting device 7 and the welding part 9 to change the positions of the second supporting device 7 and the welding part 9; the second supporting device 7 and the inner clamp Holding device 6 is connected. The third moving device 8 includes: a third driving motor 81, a third driving screw 82, a third driving nut 83 and a fourth driving nut 84. The third driving screw 82 is rotatably installed on the second supporting device 7. The driving nut 83 and the fourth driving nut 84 are both threadedly connected to the third driving screw 82. A third driving motor 81 is installed on the second support device 7. The third driving motor 81 is used to drive the third driving screw 82 to rotate. The rotation of the third driving screw 82 will cause the third driving nut 83 and the fourth driving nut 84 to move along the axial direction of the third driving screw 82 . The third driving nut 83 is fixedly connected to the first bracket 52 , and the fourth driving nut 84 Connect to weldment 9.

work process:

First, place the two sections of bottle body on the two sets of external clamping devices 4 and support them by the first clamping wheel 42. At this time, the second clamping wheel 44 on the rotating arm 43 does not contact the bottle body, and then The internal clamping device 6 and the grinding device 5 move to the first clamping wheel 42, and then the first motor drives the first driving screw 21 to rotate, and the first driving screw 21 drives the first moving base 31 through the first driving nut 22. , the second driving screw 33 and the second driving nut 34 on the first moving base 31 drive the second moving base 41 to move, so that the first clamping wheel 42 moves, and the two first clamping wheels 42 move with each other. Close, that is, the two sections of the bottle will be close to each other, and then the contact piece 68 will be located inside the bottle; then the second cylinder 62 will push the transmission plate 64 to move through the connecting piece 63, so that the transmission plate 64 will move away from the second bracket 61 , and then the transmission plate 64 expands the multiple transmission links 65 through the cooperation of the transmission link 65, the transmission bracket 66 and the guide rod 67, so that the multiple transmission brackets 66 move away from the axis of the rotation shaft 60 at the same time, and then The first contact wheel 683 on the transmission bracket 66 will be in contact with the inner wall of the bottle, and then the driving member 69 drives the rotating shaft 60 to rotate, and the rotating shaft 60 drives the rotating plate 601 to rotate, thus causing multiple first contact wheels 683 Rotating around the axis of the rotating shaft 60 causes the first contact wheel 683 to drive the bottle body to rotate.

The first cylinder 51 drives the moving frame 53 to move downward, and then the moving frame 53 drives the first driving motor 55 and the grinding roller 54 to move, so that the grinding roller 54 moves to the outer wall of the cylinder, and then the first driving motor 55 drives The grinding roller 54 rotates, and the grinding roller 54 grinds the outer wall surface of the cylinder to obtain a smooth outer wall surface, and the grinding roller 54 grinds two sections of the outer wall surface at the same time, and the two sections of the bottle rotate around the same axis, so the polishing After the final outer walls are connected to each other, there will be no poor connection. Then the internal clamping device 6 contacts the clamping of the two sections of bottles, and then the two bottles will fall downwards to the external clamping device 4, and then The external clamping device 4 supports the bottle body, that is, the first clamping wheel 42 supports the bottle body, and then the rotating arm 43 rotates around the second moving base 41, so that the second clamping wheel 44 on the rotating arm 43 is in contact with the bottle body. The bottle body abuts, which means that multiple first clamping wheels 42 and second clamping wheels 44 will support the bottle body at the same time, and then the first driving screw 21 and the first driving nut 22 make the two sets of external clamping The devices 4 are close to each other, so that the two bottles are close to each other until the two bottles are in contact and then stop. Then the second clamping wheel 44 rotates to cause the two bottles to rotate at the same time, and then the welding piece 9 pairs the two bottles. Weld the joints.

Claims (7)

1. An automatic welding system for steel cylinders, characterized in that it includes a first support device and a second support device. The first support device is provided with a grinding device and an internal clamping device; the grinding device is used for welding steel cylinders. The outer wall is polished; the internal clamping device is used to support and clamp the inner wall of the cylinder; the second support device is provided with an external clamping device; the external clamping device is used to support and clamp the outer wall of the cylinder Clamping; the internal clamping device includes: a rotating shaft, a driving member and a supporting assembly; the driving member is connected to the supporting assembly so that the driving member and the supporting assembly rotate synchronously; the rotating shaft is used to pass The driving member drives the holding component to rotate so that the cylinder can rotate around a fixed axis; the holding component clamps the cylinder from the inner wall of the cylinder to rotate the cylinder around the fixed axis, and the grinding device grinds the outer wall of the cylinder to form a smooth surface. The outer wall surface; the external clamping device clamps the smooth outer wall surface, and the external clamping device is provided with a driving part to rotate the two sections of the cylinder around the same axis; the second support device is provided with a welding piece, The welding piece is used to weld two sections of the cylinder rotating around the same axis. 2. The automatic cylinder welding system according to claim 1, characterized in that: the tightening assembly includes: a transmission plate, the transmission plate is slidably installed on the rotation shaft; the transmission plate and the rotation shaft Synchronous rotation; a plurality of transmission connecting rods are hingedly installed on the transmission plate; a transmission bracket is hingedly provided at the transmission connecting rod; a rotating plate is provided at the transmission bracket, and the rotating plate is fixedly connected to the rotating shaft; The transmission bracket is provided with a guide rod, and the guide rod is slidingly connected to the rotating plate; the transmission bracket is provided with a contact piece, and the contact piece is used to abut the inner wall of the cylinder; the transmission plate is A second cylinder is provided, and the second cylinder is used to drive the transmission plate to move axially along the rotation axis. 3. The automatic cylinder welding system according to claim 2, characterized in that: the contact piece includes: a first contact wheel, a second contact wheel and a fixed mandrel penetrating the first contact wheel and the second contact wheel; The shapes of the first contact wheel and the second contact wheel match; the first contact wheel and the second contact wheel are both rotatably mounted on a fixed mandrel; a second hinge block is formed in the middle of the fixed mandrel; A first hinge block is formed on one edge of the fixed mandrel; a second drive motor is provided at the first hinge block; the second drive motor is used to drive the first hinge block to move so that the fixed mandrel can Rotate around the second hinge block; the fixed mandrel rotates around the second hinge block to make the first contact wheel or the second contact wheel contact the inner wall of the cylinder. 4. The automatic cylinder welding system according to claim 3, characterized in that: a limiting plate is formed on the fixed mandrel; a first thrust bearing is provided at the first contact wheel, and the first thrust bearing and A spring is provided between the limiting plates; the first contact wheel is close to the first hinge block; the second contact wheel is away from the first hinge block; the first contact wheel is in contact with the inner wall of the cylinder , there is a gap between the second contact wheel and the inner wall of the cylinder, a pressure detector is installed on the first thrust bearing; a preset value is set on the pressure detector; when the detection value on the pressure detector is low When predicting the value, the second driving motor drives the first hinge block to move. 5. The automatic cylinder welding system according to claim 4, characterized in that: a plurality of insertion rods are formed on the first thrust bearing, and a sliding connection is formed between the insertion rods and the limiting plate, so that the The insertion rod guides the first thrust bearing. 6. The automatic cylinder welding system according to claim 5, characterized in that: the external clamping device is provided with a first moving device and a second moving device; the external clamping device is provided with two groups, the The second moving device is used to drive the external clamping device to approach the cylinder from one side, so that the external clamping device contacts and clamps the cylinder; the first moving device is used to control the two groups of external clamping devices to approach or move away from each other. , so that the two sections of cylinders on the two sets of external clamping devices are closer to or farther away from each other. 7. The automatic cylinder welding system according to claim 6, characterized in that: a third moving device is provided at the first supporting device, and the third moving device is used to interact with the second supporting device and the The welding part is connected, and the third moving device is used to drive the second supporting device and the welding part to change the positions of the second supporting device and the welding part; the second supporting device and The internal clamping devices are connected.