Welding seam surplus height pressing device

Abstract

The utility model relates to the technical field of welding seam shaping, and provides a welding seam surplus height pressing device which comprises a pressing wheel and a connecting support. The connecting support is connected with a driving part used for driving the connecting support to move along the length of a welding seam and a first height adjusting part used for adjusting the height of the connecting support, the connecting support is connected with a splash-proof plate used for protecting the pressing wheel, and the bottom of the splash-proof plate is provided with a slag removing cutter. And meanwhile, the slag removal cutter arranged at the bottom of the splash-proof plate can preliminarily remove slag, the flatness of the excess weld metal of the pressed welding seam is guaranteed, and compared with the existing effect, the pressing effect of the excess weld metal of the welding seam is better.

Description

Technical Field

[0001] The utility model relates to the technical field of weld shaping, in particular to a weld excess height pressing device. Background Art

[0002] Generally, the height of the weld metal that exceeds the weld toe line on the weld surface is called the weld reinforcement. In welded components, the stress concentration of the butt joint is mainly caused by the weld reinforcement. The stress at the weld toe of the butt joint is the largest. The greater the weld reinforcement, the more serious the stress concentration, and the strength of the weld joint will be reduced. Flattening the reinforcement after welding, as long as it is not lower than the base material, reduces stress concentration and sometimes can improve the strength of the weld joint.

[0003] Therefore, the butt weld usually needs to be shaped after welding to reduce the excess height, thereby reducing stress concentration and improving welding strength. In the prior art, for example, the devices disclosed in patent documents with publication numbers such as "CN213001925U", "CN205413992U", and "CN108655205A" all press the weld by moving the pressing wheel. However, since the pressing of the weld is usually performed after welding and before it is completely cooled to ensure a good pressing effect, that is, the pressing is usually performed while welding, and the welding spatter is easily adhered to the pressing wheel or even the weld excess height formed at the previous time, resulting in a poor pressing effect of the weld excess height. Utility Model Content

[0004] The utility model aims to provide a device for suppressing excess height of weld seam, so as to solve the above-mentioned defects of the prior art.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A device for suppressing excess height of a weld seam comprises a pressure wheel and a connecting bracket. The pressure wheel is rotatably connected to a rotating shaft, which is fixedly connected to the connecting bracket. The connecting bracket is connected to a driving component for driving it to move along the length of the weld seam and a first height adjustment component for adjusting its height. A splash guard for protecting the pressure wheel is connected to the connecting bracket, and a slag removal knife is provided at the bottom of the splash guard.

[0007] Optionally, a second height adjustment component for adjusting the height of the splash plate is provided between the connecting brackets.

[0008] Optionally, the second height adjustment component includes a connecting screw, the splash plate is provided with a waist-shaped hole extending in the height direction, the connecting bracket is provided with a threaded connecting hole, and the connecting screw passes through the waist-shaped hole and is connected to the threaded connecting hole.

[0009] Optionally, a cooling pipe is provided through the center of the rotating shaft.

[0010] Optionally, the pressing wheel is provided with an arc-shaped annular groove for pressing the excess height of the weld.

[0011] Optionally, the first height adjustment component includes a slide rail, two first motors and two fixed columns, the driving component is connected to the slide rail, the upper end of the column is provided with a first slide groove, the slide rail can be slidably arranged in the first slide groove along the height direction, the two first motors are respectively installed on one of the columns, the output shaft of the first motor is connected to the first screw rod, and the first screw rod is threadedly matched with the slide rail.

[0012] Optionally, a fine-tuning screw is threadedly connected to the top of the column, the lower end of the fine-tuning screw extends into the first sliding groove, and a pressing block is provided at the lower end of the fine-tuning screw.

[0013] Optionally, the driving component includes a slide, a rack, a mounting frame, a driving gear and a driving motor. The slide is connected to the connecting bracket and is slidably arranged on a slide rail. The rack is fixedly connected to the slide rail. The mounting frame is fixedly connected to the slide. The driving gear is rotatably connected to the mounting frame and meshes with the rack. The driving motor is installed on the mounting frame, and its output shaft is transmission-connected to the driving gear.

[0014] Optionally, the output shaft of the driving motor is connected to an output gear, the output gear is meshed with the driving gear, and the diameter of the output gear is smaller than the diameter of the driving gear.

[0015] Optionally, a connecting column is provided at the bottom of the slide, a sliding block is provided at the lower end of the connecting column, a sliding seat is provided at the top of the connecting bracket, the sliding seat is provided with a second sliding groove extending along the width direction of the weld, the sliding block is slidably connected in the second sliding groove, an adjusting screw is rotatably provided at one end of the second sliding groove, and the sliding block and the adjusting screw are matched through threads.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects: in the present invention, the splash-proof plate can protect the pressing wheel to prevent splashes from sticking to the pressing wheel, and at the same time, the slag removal knife provided at the bottom of the splash-proof plate can preliminarily remove the slag to ensure the flatness of the pressed weld excess height. Compared with the existing effect, the weld excess height suppression effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A structural schematic diagram of a weld excess height suppression device provided by the utility model;

[0019] Figure 2 for Figure 1 A partial view of the

[0020] Figure 3 for Figure 1 BB partial cross-sectional view;

[0021] Figure 4 This is the front view of the splash plate;

[0022] Icons: 1-pressure wheel, 101-arc ring groove, 2-connecting bracket, 3-rotating shaft, 4-first height adjustment component, 401-slide rail, 402-first motor, 403-column, 404-first screw, 5-driving component, 501-slide, 502-rack, 503-mounting frame, 504-driving gear, 505-driving motor, 506-output gear, 6-splash plate, 601-waist-shaped hole, 7-slag removal knife, 8-connecting screw, 9-fixed plate, 10-cooling pipe, 11-fine-tuning screw, 12-pressing block, 13-connecting column, 1301-slider, 14-slide seat, 15-adjusting screw, 16-jointing workpiece, 17-welding gun, 18-excess height. DETAILED DESCRIPTION

[0023] refer to Figure 1-2 A device for suppressing weld excess height includes a pressure wheel 1 and a connecting bracket 2. The pressure wheel 1 is centrally connected to a rotating shaft 3, and the rotating shaft 3 is fixedly connected to the connecting bracket 2 (for example, by welding). The rotating shaft 3 is provided with fixed plates 9 on both sides of the pressure wheel 1 to limit the axial displacement of the pressure wheel 1; the connecting bracket 2 is connected to a driving component 5 for driving it to move along the length of the weld and a first height adjustment component 4 for adjusting its height. In practical applications, two butting workpieces 16 are fixed on a welding workbench, the pressure wheel 1 is located above the weld excess height 18, and when the welding gun 17 moves along the length direction of the weld for welding, the first height adjustment component 4 adjusts the height of the pressure wheel 1 according to the requirements of the excess height 18, and then the pressure wheel 1 is moved by the driving component 5 to suppress the weld excess height 18. It should be understood that since the pressing of the weld is usually performed before it is completely cooled after the welding is completed to ensure a good pressing effect, the pressure wheel 1 and the welding gun 17 should be as close as possible.

[0024] The pressing wheel 1 is provided with an arcuate annular groove 101 for pressing the weld reinforcement 18, so as to obtain an arcuate convex weld reinforcement 18. It is easy to understand that the pressing wheel 1 should be made of a heat-resistant material with good strength and hardness at high temperatures. Further, a cooling pipe 10 is provided in the center of the rotating shaft 3 of this embodiment. It should be understood that in actual applications, a coolant is passed through the cooling pipe 10 to achieve the purpose of cooling the pressing wheel 1.

[0025] The connecting bracket 2 is connected with a splash plate 6 for protecting the pressure wheel 1, and a slag removal knife 7 is provided at the bottom of the splash plate 6. It is worth noting that the splash plate 6 can protect the pressure wheel 1 to prevent splashing and adhering to the pressure wheel 1. At the same time, the slag removal knife 7 provided at the bottom of the splash plate 6 can preliminarily remove the slag to ensure the flatness of the pressed weld excess height 18. Compared with the existing effect, the pressing effect of the weld excess height 18 is better. In addition, it should be understood that the slag removal knife 7 can be integrally formed with the splash plate 6, and the slag removal knife 7 can also be fixedly connected to the splash plate 6 (for example, welded or screwed).

[0026] refer to Figure 1 and Figure 4 , a second height adjustment component for adjusting the height of the splash plate 6 is provided between the connecting brackets 2, so as to adjust the height of the slag removal knife 7, and further adjust the thickness of the slag removed by it. In this embodiment, the second height adjustment component includes a connecting screw 8, a waist-shaped hole 601 extending in the height direction is provided on the splash plate 6, and a threaded connection hole is provided on the connecting bracket 2. The connecting screw 8 passes through the waist-shaped hole 601 and is connected to the threaded connection hole. In this arrangement, after the height of the splash plate 6 is adjusted to the right position, the splash plate 6 can be fixed to the connecting bracket 2 by tightening the connecting screw 8.

[0027] It should be understood that in other embodiments of the utility model, the second height adjustment component may also adopt other structures. For example, a strip groove is provided on the connecting bracket 2, and a connecting block is provided on the splash plate 6. The connecting block is slidably set in the strip groove, and a screw is rotatably set at one end of the strip groove. The connecting block and the screw are matched through threads. The screw can be turned to adjust the position of the connecting block in the strip groove, thereby adjusting the height of the splash plate 6.

[0028] In some embodiments, the first height adjustment component 4 and the driving component 5 can adopt the structure of the prior art. In this embodiment, the first height adjustment component 4 includes a slide rail 401, two first motors 402 and two fixed columns 403, the columns 403 are fixedly arranged on the periphery of the welding workbench, the upper ends of the columns 403 are provided with a first slide groove, the slide rail 401 can be slidably arranged in the first slide groove along the height direction, the two first motors 402 are respectively installed on one of the columns 403, the output shaft of the first motor 402 is connected to the first screw rod 404, the first screw rod 404 and the slide rail 401 are threadedly matched, when in use, the first motor 402 drives the first screw rod 404 to rotate forward and backward, so that the slide rail 401 can be moved up and down, thereby achieving the purpose of adjusting the height of the pressure wheel 1.

[0029] Furthermore, the top of the column 403 of this embodiment is connected with a fine-tuning screw 11 through a thread, and the lower end of the fine-tuning screw 11 extends into the first slide groove, and a pressing block 12 is provided at the lower end of the fine-tuning screw 11, and the pressing block 12 can be pressed against the slide rail 401 by twisting the fine-tuning screw 11. It is worth noting that since there is a thread gap between the first screw 404 and the slide rail 401, assuming that the thread gap is 0.1mm, and the weld residual height 18 is required to be a certain value of 0.2-3mm, in this case, each section of the weld has an error within 0.1mm after pressing, and this problem can be avoided by pressing the slide rail 401 with the pressing block 12. In addition, it should be understood that in some embodiments, the pressing block 12 can be fixedly connected to the fine-tuning screw 11. In this case, the size of the pressing block 12 should be smaller than the size of the first slide groove to ensure that the pressing block 12 can rotate in the first slide groove; in other embodiments, the pressing block 12 can also be rotatably connected to the fine-tuning screw 11.

[0030] refer to Figure 1 and Figure 3 On the basis of the above, the driving component 5 of this embodiment includes a slide 501, a rack 502, a mounting frame 503, a driving gear 504 and a driving motor 505. The slide 501 is connected to the connecting bracket 2, and the slide 501 is slidably set on the slide rail 401, the rack 502 is fixedly connected to the slide rail 401, the mounting frame 503 is fixedly connected to the slide 501, the driving gear 504 is rotatably connected to the mounting frame 503 and meshes with the rack 502, the driving motor 505 is installed on the mounting frame 503, and its output shaft is transmission-connected to the driving gear 504. When in use, the driving motor 505 can make the driving gear 504 roll along the rack 502, so that the connecting bracket 2 and the pressing wheel 1 are pressed as a whole along the length of the weld.

[0031] Furthermore, the output shaft of the driving motor 505 is connected to an output gear 506 , which meshes with the driving gear 504 , and the diameter of the output gear 506 is smaller than that of the driving gear 504 , that is, the output gear 506 and the driving gear 504 constitute a speed reduction mechanism.

[0032] On the basis of the above, the bottom of the slide 501 of this embodiment is provided with a connecting column 13, the lower end of the connecting column 13 is provided with a slider 1301, the top of the connecting bracket 2 is provided with a slide seat 14, the slide seat 14 is provided with a second slide groove extending in the direction of the weld width, the slider 1301 is slidably connected in the second slide groove, one end of the second slide groove is rotatably provided with an adjusting screw 15, the slider 1301 and the adjusting screw 15 are threadedly matched, it should be understood that at least one end of the second slide groove is closed, the adjusting screw 15 is rotatably provided at the closed end of the second slide groove, when in use, the slider 1301 can be slid in the slide groove by rotating the adjusting screw 15, so as to adjust the position of the pressure wheel 1 in the direction of the weld width. In some embodiments, the second screw can be connected to a motor to drive its rotation.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for reducing excess height of a weld seam, comprising a pressing wheel (1) and a connecting bracket (2), wherein the pressing wheel (1) is centrally rotatably connected to a rotating shaft (3), the rotating shaft (3) is fixedly connected to the connecting bracket (2), and the connecting bracket (2) is connected to a driving component (5) for driving it to move along the length of the weld seam and a first height adjustment component (4) for adjusting its height, characterized in that: A splash plate (6) for protecting the pressing wheel (1) is connected to the connecting bracket (2), and a slag removal knife (7) is provided at the bottom of the splash plate (6).

2. The weld excess height suppression device according to claim 1, characterized in that: A second height adjustment component for adjusting the height of the splash plate (6) is provided between the connecting brackets (2).

3. The weld excess height suppression device according to claim 2, characterized in that: The second height adjustment component comprises a connecting screw (8), the splash plate (6) is provided with a waist-shaped hole (601) extending in the height direction, the connecting bracket (2) is provided with a threaded connecting hole, and the connecting screw (8) passes through the waist-shaped hole (601) and is connected to the threaded connecting hole.

4. The weld excess height suppression device according to claim 1, characterized in that: A cooling pipe (10) is provided through the center of the rotating shaft (3).

5. The device for suppressing excess weld height according to any one of claims 1 to 4, characterized in that: The pressing wheel (1) is provided with an arc-shaped annular groove (101) for pressing the weld excess height (18).

6. The device for suppressing excess weld height according to any one of claims 1 to 4, characterized in that: The first height adjustment component (4) comprises a slide rail (401), two first motors (402) and two fixed columns (403); the driving component (5) is connected to the slide rail (401); a first slide groove is provided at the upper end of the column (403); the slide rail (401) can be slidably arranged in the first slide groove along the height direction; the two first motors (402) are respectively installed on one of the columns (403); the output shaft of the first motor (402) is connected to a first screw rod (404); and the first screw rod (404) and the slide rail (401) are matched by threads.

7. The device for suppressing excess weld height according to claim 6, characterized in that: The top of the column (403) is connected to a fine-tuning screw (11) via a thread, the lower end of the fine-tuning screw (11) extends into the first sliding groove, and a pressing block (12) is provided at the lower end of the fine-tuning screw (11).

8. The device for suppressing excess weld height according to claim 6, characterized in that: The driving component (5) comprises a slide (501), a rack (502), a mounting frame (503), a driving gear (504) and a driving motor (505); the slide (501) is connected to the connecting bracket (2), and the slide (501) is slidably arranged on the slide rail (401); the rack (502) is fixedly connected to the slide rail (401); the mounting frame (503) is fixedly connected to the slide (501); the driving gear (504) is rotatably connected to the mounting frame (503) and meshes with the rack (502); the driving motor (505) is mounted on the mounting frame (503), and its output shaft is drivingly connected to the driving gear (504).

9. The device for suppressing excess weld height according to claim 8, characterized in that: The output shaft of the driving motor (505) is connected to an output gear (506), the output gear (506) is meshed with the driving gear (504), and the diameter of the output gear (506) is smaller than the diameter of the driving gear (504).

10. The device for suppressing excess weld height according to claim 8, characterized in that: A connecting column (13) is provided at the bottom of the slide (501), a slider (1301) is provided at the lower end of the connecting column (13), a slide seat (14) is provided at the top of the connecting bracket (2), the slide seat (14) is provided with a second slide groove extending along the width direction of the weld, the slider (1301) is slidably connected in the second slide groove, an adjusting screw (15) is rotatably provided at one end of the second slide groove, and the slider (1301) and the adjusting screw (15) are matched through threads.

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