A variable diameter wheel support mechanism

Abstract

A variable diameter wheel support mechanism comprises two support arms arranged in parallel, a variable diameter wheel body is rotatably arranged between one ends of the two support arms, one end of the variable diameter wheel body is provided with a plurality of gear holes circumferentially evenly distributed around its rotation axis, and a dividing rod rotatably arranged on the outer side of the support arm close to the gear hole, the middle part of the dividing rod is rotatably connected to the support arm, and the rotation axis coincides with the rotation axis of the variable diameter wheel body, one end of the dividing rod is provided with a pin column capable of extending into the gear hole, and the other end is provided with an arc-shaped sliding hole whose center coincides with the rotation axis of the dividing rod, and a loosening pin connected to the support arm is provided in the arc-shaped sliding hole. The support mechanism, through a pin column that can be inserted into the gear hole and is arranged at one end of the indexing rod, allows the variable diameter wheel body to be accurately positioned in a preset gear position, and combined with the arc-shaped sliding hole and the tension pin connected to the support arm arranged at the other end of the indexing rod, when it is necessary to insert the pin column between the two gear holes, the position of the indexing rod can be fine-tuned by adjusting the position of the tension pin in the arc-shaped sliding hole, thereby fine-tuning the angle of the variable diameter wheel body, greatly improving the flexibility and accuracy of adjustment, and enabling the support mechanism to adapt to a wider range of pipe diameters and meet diverse production needs.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutting machines, in particular to a variable diameter wheel supporting mechanism. Background Art

[0002] When the laser cutting machine is processing longer pipes, the pipes need to be supported because the conveying part is long. In order to adapt to pipes of different diameters, variable diameter wheels are usually used for support.

[0003] For example, as shown in a contoured roller assembly in a tube support device for a laser tube cutting machine with application number CN202020876939.5, the assembly includes a support frame connected to the laser cutting machine body, a U-shaped connecting plate is provided at the end of the support frame, and a reducing wheel is rotatably arranged in the U-shaped connecting plate. A plurality of recessed supporting arc surfaces are distributed in sequence in the circumference of the outer ring of the reducing wheel, and the width of the supporting arc surface gradually decreases along the circumference of the reducing wheel to support tubes of different diameters. A plurality of gear holes distributed along the circumference of the reducing wheel are provided on one axial side surface of the reducing wheel, and these gear holes correspond one to one to the supporting arc surfaces on the reducing wheel. A plunger is also threadedly connected to the U-shaped connecting plate. When in use, first, according to the diameter of the tube, the reducing wheel is rotated until the supporting arc surface above it corresponds to the tube to be processed, and then the plunger is rotated into the corresponding gear hole to fix the reducing wheel, thereby completing the adjustment of the reducing wheel when processing tubes of different diameters.

[0004] However, the variable wheel of this structure can only be adjusted along the angle formed by these shift holes, but cannot be adjusted between two adjacent shift holes, which reduces the adjustment accuracy of the variable wheel and cannot adapt to a wider range of pipe diameters. Utility Model Content

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a variable diameter wheel support mechanism.

[0006] The technical solution of this utility model is as follows:

[0007] A variable diameter wheel support mechanism includes two support arms arranged in parallel, and a variable diameter wheel body is rotatably arranged between one end of the two support arms. It should be noted that the variable diameter wheel body here is the prior art, and is provided with a plurality of indented support arc surfaces, each support arc surface gradually shrinks along the circumference of the outer ring of the variable diameter wheel body, and the plurality of support arc surfaces are used to support pipes of different diameters. Through the above design, when the support mechanism is in use, the ends of the two support arms away from the variable diameter wheel body are fixed, and then the variable diameter wheel body is rotated to adjust the support arc surface adapted to the pipe to be processed to the upper side of the variable diameter wheel body, and at this time, the adjusted support arc surface abuts against the lower side of the pipe to be processed, thereby achieving the support work for the pipe to be processed.

[0008] As the core technical concept of the utility model, one end of the variable diameter wheel body is provided with a plurality of gear holes uniformly distributed around its rotation axis, a dividing rod is rotatably provided on the outer side of the support arm near the gear hole, the middle part of the dividing rod is rotatably connected with the support arm, the rotation axis of the dividing rod coincides with the rotation axis of the variable diameter wheel body, and one end of the dividing rod is provided with a pin that can be extended into the gear hole, so that the variable diameter wheel body can be accurately positioned in a preset gear position, and when the pin is inserted into a specific gear hole, the variable diameter wheel body is fixed in a specific position, so that the corresponding supporting arc surface can quickly match the outer diameter of the pipe; the other end of the dividing rod is provided with an arc-shaped sliding hole whose center coincides with the rotation axis of the dividing rod, and a tension pin connected to the support arm is provided in the arc-shaped sliding hole, when the pin needs to be inserted between the two gear holes, the position of the dividing rod can be fine-tuned by adjusting the position of the tension pin in the arc-shaped sliding hole, thereby fine-tuning the angle of the variable diameter wheel body, which enables the support mechanism to adapt to a wider range of pipe diameters and meet diversified production needs.

[0009] As a further implementation:

[0010] One end of the variable diameter wheel body is also provided with a plurality of scale marks corresponding to the gear holes one by one, so that the operator can clearly know the angle of each adjustment and can quickly adjust to this angle next time.

[0011] A dial is provided at one end of the variable diameter wheel body, and the scale mark and the gear hole are both arranged on the dial, and the dial is detachably connected to the variable diameter wheel body so as to replace the dial with different graduation values ​​for easy use.

[0012] The scale markings are arranged around the outer ring of the shift hole to prevent the dividing rod from blocking the scale markings, so as to facilitate the operator to read the readings.

[0013] In order to improve the stability of the dividing rod, the dividing rod includes an "L"-shaped first connecting plate composed of a mounting plate and an intermediate plate. A second connecting plate perpendicular to the mounting plate is provided on the side of the intermediate plate away from the mounting plate, and the mounting plate and the second connecting plate are parallel. The middle part of the mounting plate is rotatably connected to the support arm, and the side close to the intermediate plate is in contact with the support arm. The pin is arranged on the second connecting plate, and the sliding hole is arranged at the end of the mounting plate away from the intermediate plate.

[0014] In order to improve the structural strength of the indexing rod, the first connecting plate and the second connecting plate are configured to be integrally manufactured.

[0015] Furthermore, there is a gap between the second connecting plate and the dial, and the gap is 3mm-5mm, so as to avoid friction between the second connecting plate and the dial during adjustment, thereby improving the service life of the second connecting plate and the dial.

[0016] In order to ensure that the dial has sufficient structural strength, the thickness of the dial is set to 3mm-6mm.

[0017] The beneficial effect of a variable diameter wheel support mechanism of the utility model lies in that, through the pin column which can be extended into the gear hole and is arranged at one end of the indexing rod, the variable diameter wheel body can be accurately positioned in the preset gear position, and combined with the arc-shaped sliding hole whose center coincides with the rotation axis of the indexing rod and is arranged at the other end of the indexing rod, and the tension pin which is arranged in the arc-shaped sliding hole and connected to the support arm, when it is necessary to insert the pin column between the two gear holes, the position of the indexing rod can be fine-tuned by adjusting the position of the tension pin in the arc-shaped sliding hole, so as to fine-tune the angle of the variable diameter wheel body. This design allows the variable diameter wheel body to be adjusted not only on the preset gear position, but also between these gear positions, which greatly improves the flexibility and accuracy of the adjustment, and enables the support mechanism to adapt to a wider range of pipe diameters and meet diversified production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 This is a structural schematic diagram of a variable diameter wheel support mechanism of the utility model;

[0020] Figure 2 for Figure 1 Side view of

[0021] Figure 3 for Figure 1 A top view of

[0022] The components represented by the reference numerals in the figure are:

[0023] 1. Support arm; 2. Variable diameter wheel body; 3. Indexing rod; 31. First connecting plate; 311. Arc-shaped sliding hole; 32. Second connecting plate; 4. Pin; 5. Scale plate; 51. Shift hole. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, this embodiment provides a variable diameter wheel support mechanism, which is usually arranged in the conveying part of the laser cutting machine, and includes two support arms 1 arranged in parallel, and a variable diameter wheel body 2 is rotatably provided between one end of the two support arms 1, and one end of the two support arms 1 away from the variable diameter wheel body 2 is fixed on the bed of the laser cutting machine. It should be noted that the variable diameter wheel body 2 here is the prior art, and is provided with a plurality of recessed supporting arc surfaces, each supporting arc surface gradually shrinks along the circumference of the outer ring of the variable diameter wheel body 2, and its plurality of supporting arc surfaces are used to support pipes of different diameters.

[0025] When the supporting mechanism is in use, the supporting arc surface adapted to the pipe to be processed is adjusted to the upper side of the reducing wheel body 2 by rotating the reducing wheel body 2. At this time, the adjusted supporting arc surface abuts against the lower side of the pipe to be processed, thereby achieving the supporting work for the pipe to be processed.

[0026] Combination Figure 2 One end of the variable diameter wheel body 2 is provided with a plurality of gear holes 51 uniformly distributed around its rotation axis, and scale marks corresponding to the plurality of gear holes 51 one by one, and the scale marks are arranged around the outer circle of the gear hole 51, and a dividing rod 3 is rotatably arranged on the outer side of the support arm 1 near the side of the gear hole 51, and the middle part of the dividing rod 3 is rotatably connected with the support arm 1, and the rotation axis of the dividing rod 3 coincides with the rotation axis of the variable diameter wheel body 2, and one end of the dividing rod 3 is provided with a pin 4 that can be inserted into the gear hole, wherein the setting of the scale mark can facilitate the operator to clearly know the angle of each adjustment, so that it is convenient to quickly adjust to this angle next time; the design of the pin 4 enables the variable diameter wheel body 2 to be accurately positioned in the preset gear position, and when the pin 4 is inserted into a specific gear hole, the variable diameter wheel body 2 is fixed at a specific position, so that the corresponding supporting arc surface can quickly match the outer diameter of the pipe; the scale mark is arranged around the outer circle of the gear hole 51, which can prevent the dividing rod 3 from blocking the scale mark, and facilitate the operator to read.

[0027] The other end of the dividing rod 3 is provided with an arc-shaped sliding hole 311 whose center coincides with the rotation axis of the dividing rod 3, and a tension pin connected to the support arm 1 is provided in the arc-shaped sliding hole 311. When it is necessary to insert the pin 4 between the two gear holes, the position of the dividing rod 3 can be fine-tuned by adjusting the position of the tension pin in the arc-shaped sliding hole 311, thereby fine-tuning the angle of the variable diameter wheel body 2. This enables the support mechanism to adapt to a wider range of pipe diameters and meet diverse production needs.

[0028] In this embodiment, as an implementation method, when the tension pins are respectively located at both ends of the arc-shaped sliding hole 311, the angle formed is at least equal to the angle between two adjacent gear holes, and the center line of the arc-shaped sliding hole 311 and bisecting the center line of the arc-shaped sliding hole 311 also bisects the angle formed between two adjacent gear holes. By fine-tuning the position of the tension pin in the arc-shaped sliding hole 311, the variable wheel body 2 is fine-tuned, so that the variable wheel body 2 can not only be adjusted on the preset gear position, but also can be fine-tuned between these gear positions, which greatly improves the flexibility and accuracy of adjustment.

[0029] For the structure of the indexing rod 3, combined Figure 3Specifically, the dividing rod 3 includes an "L"-shaped first connecting plate 31 composed of a mounting plate and an intermediate plate. A second connecting plate 32 perpendicular to the mounting plate is provided on the side of the intermediate plate away from the mounting plate, and the mounting plate and the second connecting plate 32 are parallel. The middle part of the mounting plate is rotatably connected to the support arm 1, and the side close to the intermediate plate is in contact with the support arm 1. The pin 4 is provided on the second connecting plate 32, and the sliding hole is provided at the end of the mounting plate away from the intermediate plate.

[0030] The first connecting plate 31 and the second connecting plate 32 are configured to be integrally manufactured, and there is a gap between the second connecting plate 32 and the dial 5, and the gap is 3mm-5mm to avoid friction between the second connecting plate 32 and the dial 5 during adjustment, thereby improving the service life of the second connecting plate 32 and the dial 5.

[0031] As a further implementation:

[0032] A dial 5 is provided at one end of the variable diameter wheel body 2, and scale marks and gear holes are both provided on the dial 5. The dial 5 is detachably connected to the variable diameter wheel body 2 by bolts, so that the dial 5 with different graduation values ​​can be replaced for easy use. The thickness of the dial 5 is 3mm-6mm to ensure that the dial 5 has sufficient structural strength.

[0033] In this embodiment, when adjusting the variable diameter wheel body 2, first adjust the pin 4 to the outside of the gear hole, and then tighten the tension pin so that the tension pin connects the indexing rod 3 and the support arm 1 together in the arc-shaped sliding hole 311, and then rotate the variable diameter wheel body 2 according to the outer diameter of the pipe to be processed until the supporting arc surface thereon abuts against the lower side of the pipe to be processed, and finally insert the pin 4 into the gear hole to fix the indexing rod 3, thereby achieving the support work of the pipe to be processed; for those pipes that need to insert the pin 4 between two adjacent gear holes to make the supporting arc surface on the upper side of the variable diameter wheel body 2 abut against the pipe to be processed, In the case of adapting to the outer ring of the industrial pipe, the tensioning pin can be loosened on the basis of the above operation, and then the position of the tensioning pin in the arc-shaped sliding hole 311 can be adjusted by rotating the dividing rod 3, and the rotation angle of the variable wheel body 2 can be fine-tuned. Finally, the tensioning pin can be tightened to achieve fine adjustment of the angle of the variable wheel body 2. This design not only allows the variable wheel body 2 to be adjusted on the preset gear position, but also allows fine adjustment between these gear positions, which greatly improves the flexibility and accuracy of the adjustment, and enables the support mechanism to adapt to a wider range of pipe diameters and meet diversified production needs.

Claims

1. A variable diameter wheel support mechanism, comprising two support arms (1) arranged in parallel, a variable diameter wheel body (2) being rotatably arranged between one end of the two support arms (1), and a plurality of gear holes (51) being evenly distributed circumferentially around the rotation axis of the variable diameter wheel body (2) being arranged at one end, characterized in that: It also includes a dividing rod (3) rotatably arranged on the outside of the support arm (1) on a side close to the shift hole (51), wherein the middle portion is rotatably connected to the support arm (1), and the rotation axis coincides with the rotation axis of the variable diameter wheel body (2); One end of the indexing rod (3) is provided with a pin column (4) capable of extending into the shift hole (51), and the other end is provided with an arc-shaped sliding hole (311) whose center coincides with the rotation axis of the indexing rod (3), and a loosening pin connected to the support arm (1) is provided in the arc-shaped sliding hole (311).

2. A variable diameter wheel support mechanism as claimed in claim 1, characterized in that: One end of the variable diameter wheel body (2) is also provided with a plurality of scale marks corresponding one to one with the gear holes (51).

3. A variable diameter wheel support mechanism as claimed in claim 2, characterized in that: A scale plate (5) is provided at one end of the diameter-changing wheel body (2), and the scale mark and the gear hole (51) are both provided on the scale plate (5).

4. A variable diameter wheel support mechanism as claimed in claim 3, characterized in that: The scale plate (5) is detachably connected to the diameter-changing wheel body (2).

5. A variable diameter wheel support mechanism as claimed in claim 2 or 3, characterized in that: The scale markings are arranged around the outer circle of the shift hole (51).

6. A variable diameter wheel support mechanism as claimed in claim 3 or 4, characterized in that: The indexing rod (3) comprises an L-shaped first connecting plate (31) composed of a mounting plate and an intermediate plate, a second connecting plate (32) perpendicular to the mounting plate is provided on a side of the intermediate plate away from the mounting plate, and the mounting plate and the second connecting plate (32) are parallel; The middle portion of the mounting plate is rotatably connected to the support arm (1), and the side close to the middle plate is in contact with the support arm (1); The pin (4) is arranged on the second connecting plate (32), and the sliding hole (311) is arranged at an end of the mounting plate away from the middle plate.

7. A variable diameter wheel support mechanism as claimed in claim 6, characterized in that: The first connecting plate (31) and the second connecting plate (32) are integrally manufactured.

8. A variable diameter wheel support mechanism as claimed in claim 6, characterized in that: There is a gap between the second connecting plate (32) and the scale plate (5), and the gap is 3 mm-5 mm.

9. A variable diameter wheel support mechanism as claimed in claim 6, characterized in that: The thickness of the scale plate (5) is 3 mm to 6 mm.

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