Projection welding positioning mechanism

Abstract

The utility model discloses a projection welding positioning mechanism, and belongs to the technical field of projection welding positioning. Comprising a supporting table and a welding device, an electrode base is installed on the upper surface of the supporting table, an insulating cylinder is placed on the upper surface of the electrode base, the electrode base makes contact with the insulating cylinder, a first connecting block and a second connecting block are arranged outside the insulating cylinder, and a limiting mechanism is arranged in the second connecting block; the limiting mechanism comprises a pulling plate and a spherical limiting block, a surface opening groove is formed in the outer surface of the spherical limiting block, a vertical groove and a transverse groove are formed in the second connecting block, and through cooperation of the first connecting block, the second connecting block, the limiting mechanism, a vertical connecting rod and an arc-shaped plate, rapid replacement of the insulating cylinder can be achieved; and the insulating cylinder can be simply and conveniently replaced according to different threaded pipes, so that the time and the strength of workers for replacing the insulating cylinder are saved, and the working efficiency during projection welding is improved.

Description

Technical Field

[0001] This utility model relates to the field of projection welding positioning technology, and in particular to a projection welding positioning mechanism. Background Technology

[0002] Threaded pipe screws are a type of threaded projection weld screw. Unlike ordinary projection weld nuts, their projection weld feet are on the inside. Therefore, the projection weld cannot be performed using the same positioning pin method as ordinary projection weld nuts. Instead, a sleeve-type projection weld structure is typically used.

[0003] A positioning mechanism for projection welding in a projection welding machine, disclosed in CN211564825U, includes a part and a lower electrode cover. Positioning holes are provided at both the left and right ends of the top of the part. An insulating sleeve is movably sleeved inside the lower electrode cover. A threaded tube is movably sleeved on the inner side of the insulating sleeve. The outer side of the insulating sleeve is movably sleeved with the part through the positioning holes. A lower electrode seat is fixedly connected to the bottom of the lower electrode cover. A threaded hole is provided at the bottom end of the insulating sleeve. An insulating sleeve boss located inside the lower electrode cover is threadedly connected to the inner side of the threaded hole.

[0004] The aforementioned device limits the threaded pipe by using an insulating sleeve. However, when processing different workpieces, it is often necessary to limit the threaded holes of different sizes and models. When replacing the insulating sleeve, the lower electrode seat and the insulating sleeve boss need to be screwed in sequence to remove the insulating sleeve for replacement. Furthermore, the space is narrow and difficult to operate when screwing the insulating sleeve boss. The same trouble is encountered when installing a new insulating sleeve. Overall, it is time-consuming and labor-intensive to replace insulating sleeves with different inner diameters according to the needs of different threaded pipes, and it is inconvenient for workers to use. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the existing technology is time-consuming and labor-intensive when replacing insulating sleeves with different inner diameters according to the needs of different threaded pipes, and is inconvenient for workers to use. Therefore, a projection welding positioning mechanism is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A projection welding positioning mechanism includes a support platform and a welding device. An electrode seat is mounted on the upper surface of the support platform, and an insulating cylinder is placed on the upper surface of the electrode seat. The electrode seat and the insulating cylinder are in contact. A connecting block one and a connecting block two are provided on the outside of the insulating cylinder. A limiting mechanism is provided inside the connecting block two. The limiting mechanism includes a pull plate and a spherical limiting block. The outer surface of the spherical limiting block has a surface groove. The inside of the connecting block two has a vertical groove and a horizontal groove. A vertical connecting rod is fixedly connected to the bottom surface of the connecting block one. An arc panel is fixedly connected to the bottom surface of the vertical connecting rod. A limiting hole is opened inside the insulating cylinder. A workpiece is placed above the limiting hole. A set of welding holes is opened inside the workpiece. A threaded tube is provided above the workpiece. The threaded tube passes through one of the welding holes and extends into the inside of the limiting hole.

[0008] Preferably, a lower insulating ring is fitted onto the protrusion on the upper surface of the electrode holder, and the outer surface of the lower insulating ring is fixedly connected to the second connecting block. An upper insulating ring is fixedly connected to the outer surface of the insulating cylinder, and the outer surface of the upper insulating ring is fixedly connected to the first connecting block.

[0009] Preferably, the outer surface of the vertical connecting rod and the arc panel is slidably connected to the vertical groove, and the outer surface of the arc panel is in contact with the surface groove.

[0010] Preferably, a pull rod is fixedly connected to the right side of the spherical limiting block, the outer surface of the pull rod is slidably connected to the transverse groove, and a pull plate is fixedly connected to the right side of the pull rod.

[0011] Preferably, a first spring is sleeved on the outer surface of the pull plate, and the two ends of the first spring are fixedly connected to the connecting block two and the pull plate, respectively.

[0012] Preferably, a lifting plate is slidably connected to the inner wall of the vertical groove, the outer surface of the arc panel is in contact with the lifting plate, and a second spring is fixedly connected to the bottom surface of the lifting plate, with the bottom end of the second spring fixedly connected to the inner bottom wall of the vertical groove.

[0013] Preferably, a support frame is fixedly connected to the upper surface of the support platform, a telescopic cylinder is installed inside the support frame, and the welder is installed at the output end of the telescopic cylinder.

[0014] Compared with the prior art, the present invention provides a projection welding positioning mechanism, which has the following beneficial effects:

[0015] 1. This utility model enables rapid replacement of the insulating cylinder by using the cooperation between connecting block one, connecting block two, limiting mechanism, vertical connecting rod and arc panel. It is simple and convenient to replace the insulating cylinder according to different threaded pipes, saving workers time and effort in replacing the insulating cylinder and improving the work efficiency of projection welding.

[0016] 2. By pulling the pull plate to the right, this utility model can drive the pull rod and the spherical limiting block to release the limitation on the arc panel. Under the elastic force of the second spring, it can drive the lifting plate to lift the arc panel, avoiding the arc panel being repeatedly limited by the spherical limiting block when removing the electrode seat, which is more convenient to use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is an exploded structural diagram of the insulating cylinder, the machined part, and the threaded pipe of this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the electrode holder and insulating cylinder of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A in the image.

[0021] In the picture:

[0022] 1. Support platform; 2. Electrode holder; 3. Insulating cylinder; 4. Lower insulating ring; 5. Upper insulating ring; 6. Connecting block one; 7. Connecting block two; 8. Limiting mechanism; 801. Pull plate; 802. Pull rod; 803. Spherical limiting block; 804. First spring; 9. Vertical groove; 10. Horizontal groove; 11. Vertical connecting rod; 12. Arc panel; 13. Surface slot; 14. Lifting plate; 15. Spring two; 16. Limiting hole; 17. Machined part; 18. Threaded pipe; 19. Welding hole; 20. Support frame; 21. Telescopic cylinder; 22. Welding device. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4A projection welding positioning mechanism includes a support platform 1 and a welding device 22. An electrode seat 2 is mounted on the upper surface of the support platform 1, and an insulating cylinder 3 is placed on the upper surface of the electrode seat 2. The electrode seat 2 and the insulating cylinder 3 are in contact. A connecting block 6 and a connecting block 7 are provided on the outside of the insulating cylinder 3. A limiting mechanism 8 is provided inside the connecting block 7. The limiting mechanism 8 includes a pull plate 801 and a spherical limiting block 803. A surface groove 13 is opened on the outer surface of the spherical limiting block 803. A vertical groove 9 and a horizontal groove 10 are opened inside the connecting block 7. A pull rod 802 is fixedly connected to the right side of the spherical limiting block 803. The spherical limiting block 803 is spherical, and the diameter of the spherical limiting block 803 is the same as the height of the pull rod 802, so that it can be easily hidden inside the horizontal groove 10.

[0025] The outer surface of the pull rod 802 is slidably connected to the transverse groove 10. A pull plate 801 is fixedly connected to the right side of the pull rod 802. By using the pull plate 801, the pull rod 802 and the spherical limiting block 803 can be easily pulled to move the spherical limiting block 803.

[0026] A first spring 804 is sleeved on the outer surface of the pull plate 801. The two ends of the first spring 804 are fixedly connected to the connecting block 7 and the pull plate 801, respectively. Figure 4 In this state, the first spring 804 is in its natural state and is not stretched or compressed.

[0027] A vertical connecting rod 11 is fixedly connected to the bottom surface of the connecting block 6, and an arc panel 12 is fixedly connected to the bottom surface of the vertical connecting rod 11. The outer surface of the arc panel 12 is arc-shaped, and the arc panel 12 can push the spherical limiting block 803 to move.

[0028] The outer surfaces of the vertical connecting rod 11 and the arc panel 12 are slidably connected to the vertical groove 9. The outer surface of the arc panel 12 is in contact with the surface slot 13. By using the surface slot 13, the arc panel 12 can be limited.

[0029] The insulating cylinder 3 has a limiting hole 16 inside. A workpiece 17 is placed above the limiting hole 16. A set of welding holes 19 are opened inside the workpiece 17. A threaded tube 18 is provided above the workpiece 17. The threaded tube 18 passes through one of the welding holes 19 and extends into the limiting hole 16. The limiting hole 16 can limit the position of the threaded tube 18 so that the threaded tube 18 will not move randomly during projection welding.

[0030] The protrusion on the upper surface of the electrode holder 2 is fitted with a lower insulating ring 4. The outer surface of the lower insulating ring 4 is fixedly connected to the connecting block 7. The outer surface of the insulating cylinder 3 is fixedly connected with an upper insulating ring 5. The outer surface of the upper insulating ring 5 is fixedly connected to the connecting block 6. The use of the lower insulating ring 4 and the upper insulating ring 5 can prevent leakage and improve safety.

[0031] A lifting plate 14 is slidably connected to the inner wall of the vertical groove 9. The outer surface of the arc panel 12 is in contact with the lifting plate 14. A second spring 15 is fixedly connected to the bottom surface of the lifting plate 14. The bottom end of the second spring 15 is fixedly connected to the inner bottom wall of the vertical groove 9. The second spring 15... Figure 4 In the compressed state, the spring force of spring 15 can lift the lifting plate 14 and partially lift the arc panel 12, thus preventing the worker from pulling and releasing the pull plate 801 when removing the insulating cylinder 3, and then having the spherical limit block 803 reset and limit the arc panel 12 again, which would prevent the insulating cylinder 3 from being removed.

[0032] A support frame 20 is fixedly connected to the upper surface of the support platform 1. A telescopic cylinder 21 is installed inside the support frame 20. The welder 22 is installed at the output end of the telescopic cylinder 21. The telescopic cylinder 21 can drive the welder 22 to move, providing a larger space for projection welding operations.

[0033] Working principle: When projection welding is required on the workpiece 17, the workpiece 17 is placed on the insulating cylinder 3, and the threaded tube 18 is inserted through the welding hole 19 into the limiting hole 16 to position the threaded tube 18. By activating the telescopic cylinder 21, the welding machine 22 can be moved downward to perform projection welding. When it is necessary to change the insulating cylinder 3 according to different models of threaded tubes 18 so that the limiting holes 16 of different diameters can position the threaded tubes 18, by pulling the pull plate 801 to the right, the pull rod 802 and the spherical limiting block 803 can be moved, so that the spherical limiting block 803 can release the limiting of the arc panel 12. Under the elastic force of the second spring 15, the lifting plate 14 can be lifted up and the arc panel 12 can be lifted up a part, so that the connecting block 6, the upper insulating ring 5 and the insulating cylinder 3 can be removed. When reinstalling a new insulating cylinder 3, insert the arc panel 12 into the vertical groove 9. The arc surface of the arc panel 12 can push open the spherical limiting block 803. When the arc panel 12 moves to below the spherical limiting block 803, under the elastic force of the first spring 804, the spherical limiting block 803 can be reset and the arc panel 12 can be repositioned, thus completing the replacement of the insulating cylinder 3. The replacement is relatively convenient.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A projection welding positioning mechanism, comprising a support platform (1) and a welding device (22), characterized in that: An electrode seat (2) is mounted on the upper surface of the support platform (1). An insulating cylinder (3) is placed on the upper surface of the electrode seat (2). The electrode seat (2) and the insulating cylinder (3) are in contact. A connecting block one (6) and a connecting block two (7) are provided on the outside of the insulating cylinder (3). A limiting mechanism (8) is provided inside the connecting block two (7). The limiting mechanism (8) includes a pull plate (801) and a spherical limiting block (803). A surface groove (13) is opened on the outer surface of the spherical limiting block (803). A vertical groove is opened inside the connecting block two (7). (9) and transverse groove (10), the bottom surface of the connecting block (6) is fixedly connected to a vertical connecting rod (11), the bottom surface of the vertical connecting rod (11) is fixedly connected to an arc panel (12), the interior of the insulating cylinder (3) is provided with a limiting hole (16), a processing part (17) is placed above the limiting hole (16), a set of welding holes (19) is provided inside the processing part (17), a threaded tube (18) is provided above the processing part (17), the threaded tube (18) passes through one of the welding holes (19) and extends into the interior of the limiting hole (16).

2. The projection welding positioning mechanism according to claim 1, characterized in that, The protrusion on the upper surface of the electrode holder (2) is fitted with a lower insulating ring (4), the outer surface of the lower insulating ring (4) is fixedly connected to the second connecting block (7), the outer surface of the insulating cylinder (3) is fixedly connected with an upper insulating ring (5), and the outer surface of the upper insulating ring (5) is fixedly connected to the first connecting block (6).

3. The projection welding positioning mechanism according to claim 1, characterized in that, The outer surfaces of the vertical connecting rod (11) and the arc panel (12) are slidably connected to the vertical groove (9), and the outer surface of the arc panel (12) is in contact with the surface groove (13).

4. The projection welding positioning mechanism according to claim 1, characterized in that, A pull rod (802) is fixedly connected to the right side of the spherical limiting block (803). The outer surface of the pull rod (802) is slidably connected to the transverse groove (10). A pull plate (801) is fixedly connected to the right side of the pull rod (802).

5. The projection welding positioning mechanism according to claim 4, characterized in that, The outer surface of the pull plate (801) is fitted with a first spring (804), and the two ends of the first spring (804) are fixedly connected to the connecting block (7) and the pull plate (801) respectively.

6. The projection welding positioning mechanism according to claim 1, characterized in that, The inner wall of the vertical groove (9) is slidably connected to a lifting plate (14), the outer surface of the arc panel (12) is in contact with the lifting plate (14), and the bottom surface of the lifting plate (14) is fixedly connected to a spring (15), the bottom end of the spring (15) is fixedly connected to the inner bottom wall of the vertical groove (9).

7. The projection welding positioning mechanism according to claim 1, characterized in that, A support frame (20) is fixedly connected to the upper surface of the support platform (1). A telescopic cylinder (21) is installed inside the support frame (20). The welder (22) is installed at the output end of the telescopic cylinder (21).

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