An automatic roller welding device

Abstract

The present invention discloses an automated roller welding device, which relates to the technical field of roller assembly, wherein the auxiliary mechanism comprises a cylinder and a fixed arm fixedly connected to a fixed frame, the cylinder being provided with four openings, the outside of the cylinder being fixedly connected with a limit block for limiting the end cover, the cylinder being slidably connected with a first screw, the first screw being threadedly connected to the fixed frame, the application places the end cover inside a steel pipe by utilizing a moving mechanism, the first screw is rotated to move the truncated cone to the inside of the cylinder and in cooperation with the opening, the port of the cylinder is expanded, and in cooperation with the limit block, the end cover is limited, so that the end cover is prevented from running off when being welded inside the steel pipe, the welding effect is improved, and no welding scar is left on the surface of the steel pipe, which will not affect the subsequent use of the manufactured roller.

Description

Technical Field

[0001] The invention belongs to the technical field of roller assembly, in particular to an automatic roller welding device. Background Art

[0002] The roller body of the metal roller is a cylindrical seamless steel pipe with a bearing inside. A circular end cover with an axial hole is welded at each end of the steel pipe to protect the bearing inside the metal roller. Therefore, the welding of the end cover is one of the key technologies in manufacturing metal rollers.

[0003] The Chinese patent with the publication number CN215546274U discloses an automatic welding device for rollers. A clamping shaft No. 1 is arranged in the through hole on the No. 1 fixing plate, a clamping head No. 1 is arranged at the inner end of the clamping shaft No. 1, a clamping shaft No. 2 is arranged on the left side of the mounting plate, the inner end of the clamping shaft No. 2 is fixedly connected with the clamping head No. 2 through a top screw, an electric welding gun is arranged at the clamping head No. 2, and a control box is arranged on one side of the fixing table, and the control box is used to control the rotation speed of the motor and the welding current of the electric welding machine. The utility model adopts mechanical automatic welding to replace manual welding, which speeds up the work efficiency, reduces the labor intensity of workers, saves human resources, and improves the welding quality. However, the device has defects when used. During the use, the clamping head No. 1 and the clamping head No. 2 are used to clamp the steel pipe and the end cover for rotation and welding, which means that the welding point of the steel pipe and the end cover is located outside the steel pipe, so the surface of the steel pipe will leave a weld scar after welding, resulting in an uneven surface of the steel pipe, which affects the subsequent use of the roller after manufacture. Summary of the invention

[0004] The present invention aims to at least solve the technical problems existing in the prior art; to this end, the present invention proposes an automatic roller welding device.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An automated roller welding device comprises a workbench, wherein the workbench is provided with a placing mechanism for placing steel pipes, the workbench is connected to a fixed frame via a moving mechanism, two fixed frames are provided, a welding mechanism for welding an end cover to the inner surface of the steel pipe is provided on the fixed frame, a driving mechanism is provided on the fixed frame, an auxiliary mechanism for welding the steel pipe and the end cover is provided on the fixed frame, and the driving mechanism is movably connected to the welding mechanism.

[0007] The auxiliary mechanism includes a cylinder and a fixed arm fixedly connected to the fixed frame, the cylinder is provided with four openings, the outside of the cylinder is fixedly connected with a limit block for limiting the end cover, a first screw is slidably connected in the cylinder, the first screw is threadedly connected to the fixed frame, one end of the first screw is rotatably connected to a frustum body used in conjunction with the opening, the fixed arm is provided with a rotating mechanism used in conjunction with a driving mechanism to drive the steel pipe to rotate, and the end cover is sleeved on the cylinder.

[0008] As a further solution of the present invention: the rotating mechanism includes a fixed ring fixedly connected to the fixed arm, a gear ring is rotatably connected to the fixed ring, a first connecting plate is fixedly connected to the inner side of the gear ring, two first connecting plates are provided, a second screw is threadedly connected to the first connecting plate, and one end of the second screw is rotatably connected to a clamping block for clamping a steel pipe.

[0009] As a further solution of the present invention: the driving mechanism includes a first motor fixedly connected to a fixing frame, an output end of the first motor is fixedly connected to a driving gear, and the driving gear is meshed with a gear ring.

[0010] As a further solution of the present invention: a second connecting plate is fixedly connected to the first connecting plate, and the second connecting plate is used to push the steel pipe.

[0011] As a further solution of the present invention: a bottom plate is fixedly connected to the workbench, and the bottom plate is slidably connected to the fixing frame.

[0012] As a further solution of the present invention: the moving mechanism includes a second motor fixedly connected to the base plate, the output end of the second motor is fixedly connected to a bidirectional lead screw, and the bidirectional lead screw is threadedly connected to two fixing frames.

[0013] As a further solution of the present invention: the welding mechanism includes a first mounting plate fixedly connected to a fixing frame, a second mounting plate fixedly connected to the first mounting plate, and a welding gun detachably connected to the second mounting plate.

[0014] As a further solution of the present invention: the placing mechanism includes a placing rack fixedly connected to the workbench, a placing groove matching the steel pipe is penetrated through one side of the placing rack, and the top of the placing groove cavity is open.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present application places the end cover inside the steel pipe by utilizing a moving mechanism, and by rotating the first screw rod, the truncated cone body moves to the inside of the cylinder body and cooperates with the opening to open the port of the cylinder body, and cooperates with the limit block to limit the end cover, thereby preventing the end cover from running off when being welded to the inside of the steel pipe, improving the welding effect, and not leaving weld scars on the surface of the steel pipe, which will not affect the subsequent use of the roller after it is manufactured.

[0017] (2) The present application sets a second connecting plate so that when the end cover is placed inside the steel pipe, the second connecting plate moves synchronously and pushes the steel pipe to move the steel pipe to the middle part of the placement groove, which is beneficial to the symmetry of the welding parts of the end covers at both ends of the steel pipe and improves the subsequent use effect of the manufactured roller.

[0018] (3) The present application uses a driving mechanism and a rotating mechanism to make the steel pipe rotate at a uniform speed. During welding, the welding gun can be kept at a fixed angle. By utilizing the rotation of the steel pipe, the contact surface of the steel pipe and the end cover can be fully welded, which replaces the tediousness of manual welding and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a first perspective stereogram of the present invention;

[0020] Figure 2 It is a second viewing angle stereogram of the present invention;

[0021] Figure 3 This is a three-dimensional diagram of the present invention after the welding mechanism is removed;

[0022] Figure 4 The figure is a disassembled diagram of the steel pipe and the auxiliary mechanism of the present invention;

[0023] Figure 5 This is a disassembled diagram of the barrel and the first screw of the present invention;

[0024] Figure 6 is a three-dimensional diagram of the fixing frame of the present invention;

[0025] Figure 7 It is a three-dimensional diagram of the rotating mechanism of the present invention.

[0026] In the figure: 1. workbench; 2. steel pipe; 3. placement mechanism; 31. placement frame; 32. placement slot; 4. moving mechanism; 41. second motor; 42. bidirectional screw; 5. fixed frame; 6. end cover; 7. welding mechanism; 71. first mounting plate; 72. second mounting plate; 73. welding gun; 8. driving mechanism; 81. first motor; 82. driving gear; 9. auxiliary mechanism; 91. cylinder; 92. fixed arm; 93. opening; 94. limit block; 95. first screw; 96. truncated table; 97. rotating mechanism; 971. fixing ring; 972. gear ring; 973. first connecting plate; 974. second screw; 975. clamping block; 10. second connecting plate; 11. bottom plate. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] See also Figure 1-6As shown, the present application provides an automated roller welding device, including a workbench 1, on which a placing mechanism 3 for placing a steel pipe 2 is provided, the workbench 1 is connected to a fixed frame 5 via a moving mechanism 4, the fixed frame 5 is provided with a welding mechanism 7 for welding an end cover 6 to the inner surface of the steel pipe 2, the fixed frame 5 is provided with a driving mechanism 8, two fixed frames 5 are provided, and only one of the fixed frames 5 is provided with the driving mechanism 8, the fixed frame 5 is provided with an auxiliary mechanism 9 for welding the steel pipe 2 and the end cover 6, and the driving mechanism 8 is movably connected to the welding mechanism 7; the auxiliary mechanism 9 includes a cylinder 91 and a fixed arm 92 fixedly connected to the fixed frame 5, the cylinder 91 is provided with four openings 93, the cylinder 91 The outside of the cylinder 91 is fixedly connected with a limit block 94 for limiting the end cover 6, and a first screw 95 is slidably connected in the cylinder 91. The first screw 95 is threadedly connected to the fixing frame 5, and one end of the first screw 95 is rotatably connected to a frustum body 96 used in conjunction with the opening 93. The fixed arm 92 is provided with a rotating mechanism 97 used in conjunction with the driving mechanism 8 to drive the steel pipe 2 to rotate. The end cover 6 is sleeved on the cylinder 91, and the first screw 95 is rotated, so that the first screw 95 as a whole moves toward the outside of the steel pipe 2, and drives the frustum body 96 to move toward the inside of the cylinder 91 and cooperate with the opening 93 to open the port of the cylinder 91, and limit the end cover 6 in conjunction with the limit block 94. At this time, the position of the end cover 6 is in a fixed state. The end cover 6 is placed inside the steel pipe 2 by utilizing the moving mechanism 4, and the first screw 95 is rotated to move the truncated cone 96 to the inside of the cylinder 91 and cooperate with the opening 93 to open the port of the cylinder 91, and cooperate with the limit block 94 to limit the end cover 6, so as to avoid deviation of the end cover 6 when welding the end cover 6 to the inside of the steel pipe 2, improve the welding effect, and leave no weld scars on the surface of the steel pipe 2, which will not affect the subsequent use of the manufactured roller.

[0030] A bottom plate 11 is fixedly connected to the workbench 1 , and the bottom plate 11 is slidably connected to the fixing frame 5 .

[0031] The moving mechanism 4 includes a second motor 41 fixedly connected to the base plate 11. The second motor 41 is a three-phase asynchronous motor and is electrically connected to an external power supply and controlled by an external control program. The output end of the second motor 41 is fixedly connected to a bidirectional screw rod 42. The bidirectional screw rod 42 is threadedly connected to the two fixing frames 5. The second motor 41 is turned on, and then the second motor 41 drives the bidirectional screw rod 42 to rotate, thereby driving the two fixing frames 5 to approach each other, thereby driving the end cover 6 to approach the steel pipe 2, and enter the steel pipe 2 with the cylinder 91. During the movement of the fixing frame 5, the fixing frame 5 drives the gear ring 972 to move through the fixing arm 92 and the fixing ring 971, thereby driving the second connecting plate 10 to move through the first connecting plate 973. When the second connecting plate 10 moves, it will fit on one end of the steel pipe 2 and push the steel pipe 2, so that the steel pipe 2 moves to the center of the placement groove 32, thereby placing the steel pipe 2 at the center of the placement groove 32.

[0032] The welding mechanism 7 includes a first mounting plate 71 fixedly connected to the fixing frame 5, a second mounting plate 72 fixedly connected to the first mounting plate 71, a welding gun 73 detachably connected to the second mounting plate 72, the welding gun 73 is mounted on the second mounting plate 72, the muzzle of the welding gun 73 is fitted between the placement mechanism 2 and the end cover 6, and the welding gun 73 is fixed (the welding gun 73 does not need to be reinstalled during the next welding). The welding gun 73 is electrically connected to an external power source and is controlled by an external control program.

[0033] The placing mechanism 3 comprises a placing frame 31 fixedly connected to the workbench 1 , and a placing groove 32 matching the steel pipe 2 is formed through one side of the placing frame 31 , and the top of the groove cavity of the placing groove 32 is open.

[0034] Embodiment 2

[0035] Based on Example 1, see Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 shown.

[0036] The rotating mechanism 97 includes a fixed ring 971 fixedly connected to the fixed arm 92, a gear ring 972 is rotatably connected to the fixed ring 971, a first connecting plate 973 is fixedly connected to the inner side of the gear ring 972, two first connecting plates 973 are provided, a second screw rod 974 is threadedly connected to the first connecting plate 973, one end of the second screw rod 974 is rotatably connected to a clamping block 975 for clamping the steel pipe 2, and the clamping block 975 is driven to move by rotating the second screw rod 974 (just rotate the second screw rod 974 with the driving mechanism 8 below), so that the clamping block 975 is closely attached to the outer surface of the steel pipe 2. The first motor 81 is turned on, and then the first motor 81 drives the driving gear 82 to rotate, and the gear ring 972 is driven to rotate on the fixed ring 971 by meshing transmission, so that the second screw rod 974 is driven to rotate through the first connecting plate 973, and then the clamping block 975 is driven to rotate, and under the clamping action of the clamping block 975, the steel pipe 2 is driven to rotate at a uniform speed.

[0037] The driving mechanism 8 includes a first motor 81 fixedly connected to the fixing frame 5. The first motor 81 is electrically connected to an external power supply and is controlled by an external control program. A driving gear 82 is fixedly connected to the output end of the first motor 81. The driving gear 82 is meshed with a gear ring 972. The driving mechanism 8 and the rotating mechanism 97 cooperate to make the steel pipe 2 rotate at a constant speed. During welding, the welding gun 73 can be kept at a fixed angle. By utilizing the rotation of the steel pipe 2, the contact surface between the steel pipe 2 and the end cover 6 can be fully welded, which replaces the cumbersomeness of manual welding and is easy to use.

[0038] Embodiment 3

[0039] Based on Example 1, see Figure 3 , Figure 6 and Figure 7 shown.

[0040] The first connecting plate 973 is fixedly connected to a second connecting plate 10, and the second connecting plate 10 is used to push the steel pipe 2. By setting the second connecting plate 10, when the end cover 6 is placed inside the steel pipe 2, the second connecting plate 10 moves synchronously and pushes the steel pipe 2, and moves the steel pipe 2 to the middle part of the placement groove 32, which is beneficial to the symmetry of the welding parts of the end covers 6 at both ends of the steel pipe 2, and improves the subsequent use effect of the manufactured roller.

[0041] The working principle of the present invention is as follows: the steel pipe 2 is placed in the placement groove 32, and then the end cover 6 is put on the cylinder 91, and the end cover 6 is fitted with the limit block 94. After that, the second motor 41 is turned on, and then the second motor 41 drives the bidirectional screw 42 to rotate, thereby driving the two fixing frames 5 to approach each other, thereby driving the end cover 6 to approach the steel pipe 2, and enter the steel pipe 2 with the cylinder 91. During the movement of the fixing frame 5, the fixing frame 5 drives the gear ring 972 to move through the fixing arm 92 and the fixing ring 971, thereby driving the second connecting plate 10 to move through the first connecting plate 973. When the second connecting plate 10 moves, it will fit on one end of the steel pipe 2 and push the steel pipe 2, so that the steel pipe 2 moves to the center of the placement groove 32, thereby placing the steel pipe 2 at the center of the placement groove 32. Afterwards, by rotating the first screw 95, the first screw 95 as a whole moves toward the outside of the steel pipe 2, and drives the truncated cone 96 to move toward the inside of the barrel 91 and cooperate with the opening 93 to open the port of the barrel 91, and cooperate with the limit block 94 to limit the end cover 6. At this time, the position of the end cover 6 is in a fixed state. Afterwards, the welding gun 73 is installed on the second mounting plate 72, the muzzle of the welding gun 73 is fitted between the placement mechanism 2 and the end cover 6, and the welding gun 73 is fixed (the welding gun 73 does not need to be reinstalled during the next welding). Afterwards, by rotating the second screw 974 (just rotate the second screw 974 with the driving mechanism 8 below), the clamp block 975 is driven to move, so that the clamp block 975 is tightly fitted on the outer surface of the steel pipe 2. Afterwards, the first motor 81 is turned on, and the first motor 81 drives the driving gear 82 to rotate, and utilizes the meshing transmission effect to drive the gear ring 972 to rotate on the fixed ring 971, thereby driving the second screw 974 to rotate through the first connecting plate 973, and then driving the clamping block 975 to rotate, and under the clamping action of the clamping block 975, the steel pipe 2 is driven to rotate at a uniform speed; at the same time, the welding gun 73 is turned on to work. During welding, the welding gun 73 can be kept at an angle and not moved. By utilizing the rotation of the steel pipe 2, the contact surface of the steel pipe 2 and the end cover 6 can be fully welded, which replaces the tediousness of manual welding and is easy to use.

[0042] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An automated roller welding device, comprising a workbench (1), characterized in that: The workbench (1) is provided with a placement mechanism (3) for placing the steel pipe (2); the workbench (1) is connected to a fixed frame (5) via a moving mechanism (4); two fixed frames (5) are provided; the fixed frame (5) is provided with a welding mechanism (7) for welding the end cover (6) to the inner surface of the steel pipe (2); the fixed frame (5) is provided with a driving mechanism (8); the fixed frame (5) is provided with an auxiliary mechanism (9) for welding the steel pipe (2) and the end cover (6); the driving mechanism (8) is movably connected to the welding mechanism (7); The auxiliary mechanism (9) comprises a cylinder (91) and a fixed arm (92) fixedly connected to a fixed frame (5); the cylinder (91) is provided with four openings (93); a limit block (94) for limiting the end cover (6) is fixedly connected to the outside of the cylinder (91); a first screw rod (95) is slidably connected to the cylinder (91); the first screw rod (95) is threadedly connected to the fixed frame (5); one end of the first screw rod (95) is rotatably connected to a truncated cone (96) used in conjunction with the opening (93); the fixed arm (92) is provided with a rotating mechanism (97) used in conjunction with the driving mechanism (8) to drive the steel pipe (2) to rotate; and the end cover (6) is sleeved on the cylinder (91); The rotating mechanism (97) comprises a fixing ring (971) fixedly connected to the fixing arm (92), a gear ring (972) being rotatably connected to the fixing ring (971), a first connecting plate (973) being fixedly connected to the inner side of the gear ring (972), two first connecting plates (973) being provided, a second screw rod (974) being threadedly connected to the first connecting plate (973), and a clamping block (975) for clamping the steel pipe (2) being rotatably connected to one end of the second screw rod (974); The first connecting plate (973) is fixedly connected to a second connecting plate (10), and the second connecting plate (10) is used to push the steel pipe (2); A bottom plate (11) is fixedly connected to the workbench (1), and the bottom plate (11) is slidably connected to the fixed frame (5); The moving mechanism (4) comprises a second motor (41) fixedly connected to the base plate (11); a bidirectional screw rod (42) is fixedly connected to the output end of the second motor (41); and the bidirectional screw rod (42) is threadedly connected to the two fixing frames (5); The welding mechanism (7) comprises a first mounting plate (71) fixedly connected to a fixing frame (5), a second mounting plate (72) fixedly connected to the first mounting plate (71), and a welding gun (73) detachably connected to the second mounting plate (72).

2. The automatic roller welding device according to claim 1, characterized in that: The driving mechanism (8) comprises a first motor (81) fixedly connected to a fixing frame (5); an output end of the first motor (81) is fixedly connected to a driving gear (82); the driving gear (82) is meshed with a gear ring (972).

3. The automatic roller welding device according to claim 1, characterized in that: The placement mechanism (3) comprises a placement frame (31) fixedly connected to the workbench (1), and a placement groove (32) matching the steel pipe (2) is provided through one side of the placement frame (31), and the top of the groove cavity of the placement groove (32) is open.

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