Automatic welding positioner

Abstract

The present invention provides an automatic welding positioner, comprising: a lower frame is installed with an upper frame; a base plate is rotatably installed on the lower frame; a support arm is symmetrically installed on the base plate; a placement plate is rotatably installed between two support arms; a rotating arm is used to drive the base plate and the placement plate to rotate independently or simultaneously; the rotation axis of the base plate is perpendicular to the rotation axis of the placement plate. When welding a disc-shaped workpiece, the present invention can drive the workpiece to perform pitch adjustment actions in two vertical directions of the X-axis and the Y-axis simultaneously or separately and to rotate in the circumferential direction. In conjunction with a welding gun, fast and efficient welding operations in the circumferential direction can be achieved. When the operator welds the workpiece, the fine welding slag or dust generated can be collected in the cavity of the base plate under the action of a negative pressure device, which can achieve the purpose of collecting welding slag and improve the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of automatic welding, in particular to an automatic welding positioner. Background Art

[0002] When welding some disc-shaped workpieces, traditionally, due to the lack of dedicated automated welding equipment, operators are required to perform welding operations manually. This method is time-consuming and labor-intensive, not only consuming a lot of time and labor, but also requiring high requirements for operators and having great limitations. In view of this, patent announcement number CN211991653U discloses an automatic welding displacement mechanism (hereinafter referred to as "the scheme"), which includes a frame, a lifting cylinder is provided on the top of the frame, an adjustable welding gun is connected to the working end of the lifting cylinder, and a support frame is also provided in the middle of the frame. The scheme can drive the workpiece to make pitch adjustment movements and rotations in the circumferential direction, and cooperate with the welding gun to achieve fast and efficient welding operations in the circumferential direction. There is only one welding gun in front of the frame of the scheme. As is known to all, when welding, multiple groups, such as two groups, can often be set, respectively on the adjacent two sides of the frame, so that the welding gun can be fixed or the operator can process the workpiece from either side of the two sides. Therefore, this solution can only meet the requirements of adjusting the rotation angle of the workpiece within one plane, but cannot meet the requirements of adjusting the pitch angle within the vertical plane separately or simultaneously. Summary of the invention

[0003] The object of the present invention is to provide an automatic welding positioner to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An automatic welding positioner, comprising:

[0006] A lower rack is provided with an upper rack;

[0007] A base plate is rotatably mounted on the lower frame;

[0008] A support arm is symmetrically mounted on the base plate;

[0009] A placement plate is rotatably mounted between two support arms;

[0010] A rotating arm, used to drive the substrate and the placement plate to rotate independently or simultaneously;

[0011] The rotation axis of the substrate is perpendicular to the rotation axis of the placement plate.

[0012] Preferably, a support sleeve and a driving wheel are installed on the support arm, the rotating arm is sleeved on the support sleeve, and the rotating arm includes an outer rotating arm and an inner rotating arm sleeved on the outer rotating arm, a gear is installed on the side of the placement plate, one end of the outer rotating arm has a thread for engaging the driving gear, and the inner rotating arm is moved along the axial direction of the outer rotating arm to make the inner rotating arm drive the driving wheel to rotate, thereby driving the driven wheel in the substrate to rotate.

[0013] Preferably, an intermediate wheel is also installed in the base plate, the driven wheel is installed on a rotating shaft penetrating the base plate, both ends of the rotating shaft are installed on the lower frame, and the intermediate wheel is respectively linked with the driving wheel and the driven wheel.

[0014] Preferably, a handle is installed at one end of the inner rotating arm, and the handle is hinged with a support rod for limiting further relative movement or rotation between the inner rotating arm and the outer rotating arm. A pin is installed on the inner wall of the end of the support rod, and the outer rotating arm has a blind hole that cooperates with the pin.

[0015] Preferably, a spring and two bearings are mounted on the inner rotating arm between the handle and the outer rotating arm, and the two bearings are respectively located at both ends of the spring and connected to the ends of the spring.

[0016] Preferably, an insert block is installed at the other end of the inner rotating arm, and the driving wheel has a plug hole adapted to be plugged into the insert block, and the diameter of the insert block is larger than the diameter of the inner rotating arm.

[0017] Preferably, the support sleeve has a bolt hole, and a locking bolt is installed through the support arm, and the locking bolt can lock the outer rotating arm through the bolt hole.

[0018] Preferably, an arc-shaped positioning rail is installed on the lower frame, the arc-shaped positioning rail coincides with the rotation track of the end of the base plate, and the arc-shaped positioning rail has a positioning hole at one end of the base plate, and is equipped with an insertion rod for insertion into the positioning hole.

[0019] Preferably, the substrate has a cavity therein, the upper end surface of the substrate has a through hole, and the lower end surface of the substrate is installed with a negative pressure device connected to the cavity through a tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention, when welding a disc-shaped workpiece, can drive the workpiece to perform pitch adjustment actions in two mutually perpendicular directions of the X-axis and the Y-axis simultaneously or separately and to rotate in the circumferential direction. In conjunction with a welding gun, fast and efficient welding operations in the circumferential direction can be achieved, which can greatly save manual labor, improve work efficiency, and ensure welding quality. In addition, its manufacturing process is simple and its manufacturing cost is low. When the operator welds the workpiece, the fine welding slag or dust generated can be collected in the cavity of the substrate under the action of the negative pressure equipment, which can achieve the purpose of collecting welding slag and has the purpose of improving the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 It is a side view schematic diagram (partial) of an embodiment of the present invention;

[0024] Figure 3 It is a rear view schematic diagram (partial) of an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the rotating arm of the present invention and its cooperation with the driving wheel and the intermediate wheel;

[0026] Figure 5 This is a schematic diagram of the placement tray and interior of the present invention.

[0027] In the figure: 1 lower frame, 2 upper frame, 3 base plate, 4 support arm, 5 placement plate, 6 lifting cylinder, 7 welding gun, 8 electric control box, 9 rotating arm, 10 gear, 11 support sleeve, 12 outer rotating arm, 13 inner rotating arm, 14 handle, 15 thread, 16 spring, 17 bearing, 18 support rod, 19 latch, 20 blind hole, 21 plug block, 22 driving wheel, 23 socket, 24 intermediate wheel, 25 rotating shaft, 26 driven wheel, 27 locking bolt, 28 cavity, 29 through hole, 30 negative pressure device, 31 arc positioning rail, 32 positioning hole, 33 plug rod, 34 workpiece. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0029] Example:

[0030] See also Figures 1 to 5 , the present invention provides a technical solution:

[0031] An automatic welding positioner, comprising:

[0032] A lower frame 1 is provided with an upper frame 2;

[0033] A base plate 3 is rotatably mounted on the lower frame 1;

[0034] The support arm 4 is symmetrically mounted on the base plate 3;

[0035] A placement plate 5 is rotatably mounted between the two support arms 4;

[0036] The rotating arm 9 is used to drive the substrate 3 and the placement plate 5 to rotate independently or simultaneously;

[0037] The rotation axis of the substrate 3 is perpendicular to the rotation axis of the placement plate 5. Figure 1 In the figure, the X-axis serves as the rotation axis of the placement plate 5, and the Y-axis serves as the rotation axis of the substrate 3.

[0038] Specifically, a support sleeve 11 and a driving wheel 22 are installed on the support arm 4, the rotating arm 9 is sleeved on the support sleeve 11, and the rotating arm 9 includes an outer rotating arm 12 and an inner rotating arm 13 sleeved on the outer rotating arm 12, a gear 10 is installed on the side of the placement plate 5, and one end of the outer rotating arm 12 has a thread 15 for engaging the driving gear 10, and the inner rotating arm 13 is moved along the axial direction of the outer rotating arm 12, so that the inner rotating arm 13 drives the driving wheel 22 to rotate, thereby driving the driven wheel 26 in the base plate 3 to rotate.

[0039] Specifically, an intermediate wheel 24 is installed in the base plate 3, the driven wheel 26 is installed on a rotating shaft 25 that penetrates the base plate 3, both ends of the rotating shaft 25 are installed on the lower frame 1, and the intermediate wheel 24 is linked with the driving wheel 22 and the driven wheel 26 respectively.

[0040] Specifically, a handle 14 is installed at one end of the inner rotating arm 13, and the handle 14 is hinged with a support rod 18 for limiting further relative movement or rotation between the inner rotating arm 13 and the outer rotating arm 12. A pin 19 is installed on the inner wall of the end of the support rod 18, and the outer rotating arm 12 has a blind hole 20 that is plugged into and cooperates with the pin 19.

[0041] Specifically, a spring 16 and two bearings 17 are mounted on the inner rotating arm 13 between the handle 14 and the outer rotating arm 12 . The two bearings 17 are respectively located at two ends of the spring 16 and connected to the ends of the spring 16 .

[0042] Specifically, an insert block 21 is installed at the other end of the inner rotating arm 13 , and a plug hole 23 adapted to be plugged with the insert block 21 is provided on the driving wheel 22 . The diameter of the insert block 21 is larger than the diameter of the inner rotating arm 13 .

[0043] Specifically, the support sleeve 11 has a bolt hole, and a locking bolt 31 is installed through the support arm 4. The locking bolt 31 can lock the outer rotating arm 12 through the bolt hole.

[0044] Specifically, an arc-shaped positioning rail 31 is installed on the lower frame 1 , and the arc-shaped positioning rail 31 coincides with the rotation trajectory of the base plate 3 . The arc-shaped positioning rail 31 has a positioning hole 32 at one end of the base plate 3 , and is equipped with an insertion rod 33 for insertion into the positioning hole 32 .

[0045] Specifically, the substrate 3 has a cavity 28 therein, the upper end surface of the substrate 3 has a through hole 29, and the lower end surface of the substrate 3 is installed with a negative pressure device 30 connected with the cavity 28 through a tube.

[0046] The present invention, as Figure 1 As shown, by setting a placement plate 5, the placement plate 5 is installed on two support arms 4, and the placement plate 5 can rotate with the support arms 4 as a fulcrum, that is, it can rotate / swing in the X-axis direction to achieve adjustment and swing in the pitch direction or downward relative to the X-axis direction. Figure 2 As shown, the placement plate 5 can rotate along the A direction.

[0047] The present invention, as Figure 1 As shown, a base plate 3 is provided for mounting a support plate 5. The base plate 3 is mounted on the lower frame 1 via a rotating shaft 25, so the base plate 3 and the components mounted thereon can rotate with the base plate 3 as the rotation axis. The base plate 3 can rotate / swing in the Y-axis direction to achieve adjustment and swing in the pitch direction or downward relative to the Y-axis direction. Figure 3 As shown, the substrate 3 can rotate along the B direction.

[0048] In the present invention, since the placement plate 5 can rotate / swing in the X-axis direction, and the substrate 3 can rotate / swing in the Y-axis direction, it is realized that two vertical axial rotations can be achieved in one frame, so the positioner can be realized as follows: Figure 1 As shown, when the operator needs to weld the workpiece 34, he can operate in front of the positioner or on the left or right side, so that welding operations can be performed on multiple sides of the frame. The frame is rotated in two vertical axes to achieve adjustment and swing in the pitch direction on the two axes, and positioning can be performed after the angle is adjusted to a suitable level.

[0049] The present invention, as Figure 2As shown, a support sleeve 11 is provided on the support arm 4, and the support sleeve 11 is internally threadedly connected to an external rotating arm 12 with a thread 15 at one end. A gear 10 is fixedly provided on the side of the placement plate 5, and the teeth on the gear 10 engage with the thread 15 on the external rotating arm 12. The gear 10 is driven by rotating the external rotating arm 12, so that the placement plate 5 can be rotated / swinged in the X-axis direction, and then the operator can operate in front of the positioner.

[0050] The present invention, as Figures 2 to 4 As shown, an inner rotating arm 13 is mounted on the outer rotating arm 12, and the inner rotating arm 13 can move along the axial direction of the outer rotating arm 12, and can rotate relative to the outer rotating arm 12. When the substrate 3 needs to be rotated, the inner rotating arm 13 is first pushed inwardly by the handle 14, so that the plug block 21 at the other end of the inner rotating arm 13 is inserted into the matching plug-in socket 23, and the driving wheel 22 can be driven by rotating the handle 14. The rotation of the driving wheel 22 can drive the intermediate wheel 24 in the substrate 3 to rotate, and then the intermediate wheel 24 can drive the driven wheel 26 located in the substrate 3 and mounted on the rotating shaft 25 to rotate, so as to realize the rotation / swing of the substrate 3 in the Y-axis direction, and then the operator can operate on the side of the positioner.

[0051] In the present invention, the rotating arm 9 includes an outer rotating arm 12 and an inner rotating arm 13 mounted on the outer rotating arm 12. By rotating the rotating arm 9, the workpiece can be adjusted and swung in the pitch direction relative to the frame simultaneously or separately in the X-axis and Y-axis directions, and there is no need to adjust the rotation direction of the rotating arm 9. Only an integral rotating arm 9 structure can be used to achieve pitch rotation in two vertical directions.

[0052] The present invention, as Figure 4 As shown, by providing a spring 16, after the insertion and matching between the insert block 21 and the socket 23 are released, it is convenient for the operator to move the insert block 21 outward through the handle 14 and the insert block 21 can return to the initial position under the action of the spring elastic force. When the inner rotating arm 13 is rotated alone, bearings 17 are provided at both ends of the spring, which can facilitate the rotation of the inner rotating arm 13. By providing a support rod 18, the outer rotating arm 12 and the inner rotating arm 13 can be fixed after the insert block 21 and the socket 23 are inserted. In this way, the workpiece can be adjusted and swung in the pitch direction relative to the frame in the X-axis and Y-axis directions at the same time. In the present invention, the diameter of the insert block 21 is slightly larger than the diameter of the inner rotating arm 13, which serves the purpose of limiting the inner rotating arm 13 from falling off. In addition, the intermediate wheel 24 can adopt a double-groove transmission wheel to facilitate the connection with the socket 23 and the driven wheel 26 respectively.

[0053] The present invention, as Figure 1 and Figure 3As shown, a positioning hole 32 is provided at one end of the rear side of the base plate 3, and an arc-shaped positioning rail 31 is also installed at the rear side of the upper frame 1. The arc-shaped positioning rail 31 coincides with the rotation trajectory of the end of the base plate 3, and a positioning hole 32 is also provided on the arc-shaped positioning rail 31, and a plug rod 33 is provided for plugging into the positioning hole 32. Therefore, after the base plate 3 is adjusted and swung in the pitch direction with the Y axis as the rotation axis, the plug rod 33 can be plugged into the positioning hole 32, so that the base plate 3 can be fixed. In addition, when it is not necessary to rotate the base plate 3, the base plate 3 can be fixed first by the plug rod 33. When adjustment is required, the restriction of the plug rod 33 on the base plate 3 can be released.

[0054] The present invention, as Figure 5 As shown, the substrate 3 has a cavity 28, and the upper end surface of the substrate 3 has a through hole 29, and the lower end surface of the substrate 3 is installed with a negative pressure device 30 connected to the cavity 28 through a tube, and a material discharge bin door (not shown in the figure) is provided at the bottom of the substrate 3. Therefore, when the operator welds the workpiece 34, the fine welding slag or dust generated falls into the cavity 28 through the through hole 29 under the action of the negative pressure device 30 and is collected. The purpose of collecting welding slag is achieved, and the purpose of improving the working environment is achieved.

[0055] In the present invention, a lifting cylinder 6 is arranged on the top of the upper frame 2, and a welding gun 7 is connected to the working end of the lifting cylinder 6. A rotating servo motor is arranged at the bottom of the placement plate 5 for driving a rotating clamp to clamp the workpiece 34. The prior art may be referred to and will not be described in detail here.

[0056] According to the present invention, firstly, a rotating fixture is used to fix and clamp the workpiece 34 to be welded, and then the rotating arm 9 is manually rotated. The rotating arm 9 includes an outer rotating arm 12 and an inner rotating arm 13, which can simultaneously or separately drive the workpiece to adjust and rotate / swing in the pitch direction in the X-axis and Y-axis directions, wherein the rotation of the placement plate 5 is as follows: the thread 15 of the outer rotating arm 12 is engaged with the teeth on the gear 10, so the above action will drive the gear 10 to rotate, and then drive the placement plate 5 as a whole to adjust and swing in the pitch direction relative to the support arm 4, and the outer rotating arm 12 is stopped after the angle is adjusted appropriately; the rotation of the base plate 3 is as follows: the inner rotating arm 13 is pushed inwardly by the handle 14, so that the plug block 21 at the other end of the inner rotating arm 13 is inserted into the corresponding plug-in socket 23, at this time, the driving wheel 22 can be driven by rotating the handle 14, and the rotation of the driving wheel 22 can drive the intermediate wheel in the base plate 3 24 rotates, and then the intermediate wheel 24 drives the driven wheel 26 located in the base plate 3 and mounted on the rotating shaft 25 to rotate, so as to realize that the base plate 3 is perpendicular to the rotation / swing direction of the placement plate 5; after the base plate 3 and the placement plate 5 are adjusted, the lifting cylinder 6 is controlled by the electric control box 8 to work, and the lifting cylinder 6 drives the welding gun 7 downward until the working end of the welding gun 7 contacts the workpiece 34, and the preparation work is completed. The rotary servo motor is controlled by the electric control box 8 to work, and the rotary servo motor drives the rotating fixture, thereby driving the workpiece 34 to rotate. While rotating, the welding gun 7 works to perform a welding operation on the workpiece 34 in the circumferential direction. After the workpiece 34 rotates one circle, the rotating servo motor stops working, and the lifting cylinder 6 drives the welding gun 7 upward, removes the workpiece 34 that has been welded from the rotating fixture, and reinstalls a workpiece 34 to be welded on the rotating fixture, and repeats the above operation.

[0057] The remaining parts of the present invention that are not described may be the same as the prior art, or are well-known technologies, or may be implemented by using the prior art, and will not be described in detail here.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding positioner, characterized in that: include: A lower frame (1) is provided with an upper frame (2); A base plate (3) is rotatably mounted on the lower frame (1); A support arm (4) is symmetrically mounted on the base plate (3); A placement plate (5) rotatably mounted between the two support arms (4); A rotating arm (9) is used to drive the base plate (3) and the placement plate (5) to rotate independently or simultaneously; The rotation axis of the base plate (3) is perpendicular to the rotation axis of the placement plate (5); The support arm (4) is provided with a support sleeve (11) and a driving wheel (22); the rotating arm (9) is sleeved on the support sleeve (11), and the rotating arm (9) comprises an outer rotating arm (12) and an inner rotating arm (13) sleeved on the outer rotating arm (12); a gear (10) is provided on the side of the placement plate (5); one end of the outer rotating arm (12) has a thread (15) for engaging the driving gear (10); the inner rotating arm (13) is moved along the axial direction of the outer rotating arm (12) so that the inner rotating arm (13) drives the driving wheel (22) to rotate, thereby driving the driven wheel (26) in the base plate (3) to rotate; An intermediate wheel (24) is also installed in the base plate (3), the driven wheel (26) is installed on a rotating shaft (25) that passes through the base plate (3), both ends of the rotating shaft (25) are installed on the lower frame (1), and the intermediate wheel (24) is linked with the driving wheel (22) and the driven wheel (26) respectively; A handle (14) is mounted on one end of the inner rotating arm (13); the handle (14) is hingedly connected to a support rod (18) for limiting further relative movement or rotation of the inner rotating arm (13) and the outer rotating arm (12); a latch (19) is mounted on the inner wall of the end of the support rod (18); and a blind hole (20) is provided on the outer rotating arm (12) for plugging with the latch (19); A spring (16) and two bearings (17) are sleeved on the inner rotating arm (13) between the handle (14) and the outer rotating arm (12); the two bearings (17) are respectively located at two ends of the spring (16) and connected to the ends of the spring (16).

2. The automatic welding positioner according to claim 1, characterized in that: An insert block (21) is installed at the other end of the inner rotating arm (13), and a plug hole (23) adapted to be plugged into the insert block (21) is provided on the driving wheel (22), and the diameter of the insert block (21) is larger than the diameter of the inner rotating arm (13).

3. The automatic welding positioner according to claim 1, characterized in that: The support sleeve (11) has a bolt hole, and a locking bolt (27) is installed through the support arm (4). The locking bolt (27) can lock the outer rotating arm (12) through the bolt hole.

4. The automatic welding positioner according to claim 1, characterized in that: An arc-shaped positioning rail (31) is installed on the lower frame (1), the arc-shaped positioning rail (31) coincides with the rotation trajectory of the end of the base plate (3), and the arc-shaped positioning rail (31) has a positioning hole (32) at one end of the base plate (3), and is equipped with an insertion rod (33) for insertion into the positioning hole (32).

5. The automatic welding positioner according to claim 1, characterized in that: The substrate (3) has a cavity (28) therein, the upper end surface of the substrate (3) has a through hole (29), and the lower end surface of the substrate (3) is installed with a negative pressure device (30) connected to the cavity (28) through a tube.

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