Double-side positioning mechanism for welding roller carrier

Abstract

The utility model discloses a double-side positioning mechanism for a welding roller carrier, which comprises two fixed underframes which are bilaterally symmetrical, and positioning laser pens which are horizontally and fixedly arranged at the positions, corresponding to driven rollers, of the outer sides of one pincerlike frame positioned on the front surface of a steel pipe and one pincerlike frame positioned on the back surface of the steel pipe, projection plates are vertically and fixedly installed at the positions, corresponding to the driven rollers, of the outer side of the other pincerlike frame located on the front face of the steel pipe and the outer side of the other pincerlike frame located on the back face of the steel pipe. Before a steel pipe is loaded, the positioning bolts are inserted into the light-transmitting through holes and the limiting seats to position the angles of the driven rollers, and when the driving roller drives the steel pipe and the driven rollers to rotate, if the rotating speeds of the driven rollers on the two sides are not consistent, the steel pipe is fixed; and the light emitted by the positioning laser pen cannot simultaneously penetrate through the light-transmitting through holes of the driven rollers on the two sides to be projected onto the projection plate, so that the effects of positioning the driven rollers on the two sides and judging errors are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding roller frames, in particular to a double-side positioning mechanism for a welding roller frame. Background Art

[0002] The self-adjusting roller frame consists of two groups, each set contains four rollers. The rollers adopt the structure of inner iron core and outer rubber, which jointly support the rotation of steel pipes to complete welding, bringing great convenience to the welding of large-size steel pipes.

[0003] When the welding rollers are installed, they are precisely positioned, and the speed regulating motor and speed regulating controller need to be calibrated to ensure that the steel pipes supported by the two sets of rollers can rotate smoothly. However, as the years of use increase, the speed regulating motors corresponding to the two sets of rollers will age differently due to various objective factors. The difference in the rotation speed of the rollers on the two sets of rollers will cause the rollers to apply different static friction forces to both ends of the steel pipe, causing vibration during the rotation of the steel pipe, affecting the weld butt and welding operations. The speed regulating motor and speed regulating controller need to be calibrated to solve the problem. Since the existing welding rollers do not have bilateral error indication measures, problems cannot be discovered in time, and production losses have already occurred when welding problems occur, which needs to be improved. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a double-sided positioning mechanism for a welding roller frame, which is used to solve the problem that the existing welding roller frame has no double-sided error indication measures, resulting in the increase of the service life and the error of the rotation rate of the double-sided rollers affecting the weld butt and welding operation and causing production losses.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A double-sided positioning mechanism for a welding roller frame, comprising two fixed base frames that are symmetrical in left and right, two clamp frames that are symmetrically hinged on the two fixed base frames, active rollers and passive rollers that support steel pipes are installed on the clamp frames, the active rollers are located below the passive rollers, and a driving motor that is transmission-connected to the active rollers is installed on the sides of the clamp frames, a positioning laser pen is horizontally fixedly installed at the positions corresponding to the passive rollers on the outer sides of one of the clamp frames located on the front of the steel pipe and one of the clamp frames located on the back of the steel pipe, and a projection plate is vertically fixedly installed at the positions corresponding to the passive rollers on the outer sides of the other clamp frames located on the front of the steel pipe and the other clamp frames located on the back of the steel pipe;

[0007] The side of the passive roller is provided with light-transmitting perforations parallel to the axis at equal circumferential intervals. The positioning laser pen and the projection plate are at the same height, and the distance between the axes of the positioning laser pen and the passive roller is equal to the distance between the axis of the light-transmitting perforation and the axis of the passive roller. Both sides of the top of the clamp-shaped frame are fixedly connected with limit seats, and positioning pins penetrating through the light-transmitting perforations at corresponding positions are horizontally movably inserted into the limit seats.

[0008] Preferably, the positioning pin has a T-shaped structure.

[0009] Preferably, the handle of the positioning pin is located outside the clamp-shaped frame.

[0010] Preferably, the insertion end of the positioning pin is bullet-shaped.

[0011] Preferably, the diameter of the light-transmitting perforation does not exceed 1 cm, and the size of the positioning pin is adapted to the size of the light-transmitting perforation.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By arranging the positioning pin, the limit seat, the positioning laser pen, the projection plate and the light-transmitting perforations on the passive roller, before loading the steel pipe, the angle of the passive roller is positioned by inserting the positioning pin into the light-transmitting perforation and the limit seat. After pulling out the positioning pin, when the driving roller drives the steel pipe and the passive roller to rotate, if the rotation speeds of the two passive rollers on both sides are the same, the light emitted by the positioning laser pen can periodically pass through the light-transmitting perforations of the two passive rollers on both sides and be projected onto the projection plate. If the rotation speeds of the two passive rollers on both sides are different, the light emitted by the positioning laser pen cannot pass through the light-transmitting perforations of the two passive rollers on both sides at the same time and be projected onto the projection plate. And the passive roller is driven by the driving roller and the steel pipe. Therefore, according to whether there is a projection spot on the projection plate, the error of the bilateral drive motor can be judged, achieving the effects of positioning the bilateral passive rollers and judging the error, and solving the problem that the existing welding roller frame has no bilateral error indication measures, which affects the butt joint of the weld and the welding operation and causes production losses when the rotation speed error of the bilateral rollers increases with the increase of the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of the utility model;

[0015] Figure 2 is the side view of the utility model;

[0016] Figure 3 is the enlarged front view of the clamp-shaped frame at both ends of the steel pipe of the utility model;

[0017] Figure 4 is the enlarged side view of the clamp-shaped frame at one end of the steel pipe of the utility model;

[0018] Figure 5 This is a top cross-sectional view of the positioning laser pen, passive roller and projection board of the utility model.

[0019] In the figure: 1. fixed base frame; 2. clamp frame; 3. steel pipe; 4. active roller; 5. passive roller; 6. driving motor; 7. positioning pin; 8. positioning laser pen; 9. projection board; 10. light-transmitting perforation; 11. limit seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1-5 As shown, the utility model provides a technical solution: a double-sided positioning mechanism for a welding roller frame, comprising two fixed base frames 1 symmetrically on the left and right, two clamp frames 2 are symmetrically hinged on the two fixed base frames 1, and an active roller 4 and a passive roller 5 supporting a steel pipe 3 are installed on the clamp frames 2, the active roller 4 is located below the passive roller 5, and a driving motor 6 connected to the active roller 4 is installed on the side of the clamp frames 2;

[0022] A positioning laser pen 8 is fixedly installed horizontally at the position of the passive roller 5 on the outer side of one of the clamp-shaped frames 2 located on the front side of the steel pipe 3 and one of the clamp-shaped frames 2 located on the back side of the steel pipe 3, and a projection board 9 is fixedly installed vertically at the position of the passive roller 5 on the outer side of another clamp-shaped frame 2 located on the front side of the steel pipe 3 and another clamp-shaped frame 2 located on the back side of the steel pipe 3;

[0023] The side surface of the passive roller 5 is equidistantly provided with light-transmitting through holes 10 parallel to the axis along the circumferential direction, the positioning laser pen 8 and the projection board 9 are located at the same height, and the distance between the axes of the positioning laser pen 8 and the passive roller 5 is equal to the distance between the axes of the light-transmitting through hole 10 and the passive roller 5, and both sides of the top of the clamp frame 2 are fixedly connected to the limit seat 11, and the limit seat 11 is horizontally movably plugged with a positioning pin 7 that penetrates the light-transmitting through hole 10 at the corresponding position;

[0024] The positioning pin 7 is in a T-shaped structure, the handle of the positioning pin 7 is located outside the clamp frame 2, the plug end of the positioning pin 7 is in a bullet shape, the diameter of the light-transmitting through hole 10 does not exceed 1CM, and the size of the positioning pin 7 is adapted to the size of the light-transmitting through hole 10.

[0025] Working principle: Before loading the steel pipe 3, the angle of the passive roller 5 is positioned by inserting the positioning pin 7 into the light-transmitting perforation 10 and the limit seat 11. After pulling out the positioning pin 7, when the driving roller 4 drives the steel pipe 3 and the passive roller 5 to rotate, if the rotation speeds of the two passive rollers 5 are the same, the light emitted by the positioning laser pen 8 can periodically pass through the light-transmitting perforations 10 of the two passive rollers 5 and be projected onto the projection plate 9. If the rotation speeds of the two passive rollers 5 are different, the light emitted by the positioning laser pen 8 cannot pass through the light-transmitting perforations 10 of the two passive rollers 5 simultaneously and be projected onto the projection plate 9. Since the passive roller 5 is driven by the driving roller 4 and the steel pipe 3, the error of the bilateral drive motor 6 can be judged according to whether there is a projection spot on the projection plate 9, achieving the effect of positioning and error judgment of the bilateral passive rollers 5.

[0026] It should be noted that in this article, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such a process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-sided positioning mechanism for a welding roller frame, comprising two fixed frames (1) symmetrically arranged on both sides, two clamp frames (2) being symmetrically hingedly arranged on both sides, an active roller (4) and a passive roller (5) supporting a steel pipe (3) being mounted on the clamp frames (2), the active roller (4) being located below the passive roller (5), and a driving motor (6) being transmission-connected to the active roller (4) being mounted on the side of the clamp frames (2), characterized in that: A positioning laser pen (8) is fixedly installed horizontally on one of the clamp-shaped frames (2) located on the front of the steel pipe (3) and one of the clamp-shaped frames (2) located on the back of the steel pipe (3) at a position corresponding to the passive roller (5), and a projection plate (9) is fixedly installed vertically on another clamp-shaped frame (2) located on the front of the steel pipe (3) and another clamp-shaped frame (2) located on the back of the steel pipe (3) at a position corresponding to the passive roller (5); The side surface of the passive roller (5) is provided with light-transmitting perforations (10) parallel to the axis at equal intervals along the circumferential direction; the positioning laser pen (8) and the projection board (9) are located at the same height; and the distance between the axes of the positioning laser pen (8) and the passive roller (5) is equal to the distance between the axes of the light-transmitting perforations (10) and the passive roller (5); both sides of the top of the clamp frame (2) are fixedly connected to a limit seat (11); and a positioning pin (7) penetrating the light-transmitting perforations (10) at corresponding positions is horizontally and movably inserted on the limit seat (11).

2. A double-sided positioning mechanism for a welding roller frame according to claim 1, characterized in that: The positioning pin (7) is in a T-shaped structure.

3. A double-sided positioning mechanism for a welding roller frame according to claim 2, characterized in that: The handle of the positioning latch (7) is located outside the clamp frame (2).

4. The double-side positioning mechanism for a welding roller frame according to claim 1, characterized in that: The plug-in end of the positioning pin (7) is in the shape of a bullet head.

5. The double-side positioning mechanism for a welding roller frame according to claim 1, characterized in that: The diameter of the light-transmitting through hole (10) does not exceed 1 cm, and the size of the positioning pin (7) is compatible with the size of the light-transmitting through hole (10).

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