Variable-diameter wheel triangular supporting mechanism and laser pipe cutting machine applying same

Abstract

The variable-diameter wheel triangular supporting mechanism comprises a supporting frame and an air cylinder on one side of the supporting frame, a variable-diameter wheel body is arranged at one end of the supporting frame, the other end of the supporting frame is rotationally connected with a first support capable of being connected with a machine body of the pipe cutting machine, and one end of the air cylinder is rotationally connected with the middle of the supporting frame through a fourth support. The mounting seat comprises a second support and a third support connected with the second support in an inserted mode, one side of the second support can be connected with the pipe cutting machine body, a protruding block is arranged on the other side of the second support in an outward protruding mode, a plurality of inserting holes are formed in the middle of the protruding block, and one side of the third support is rotationally connected with an air cylinder. A plurality of insertion strips corresponding to the insertion holes are arranged on the other side of the second support, and the second support is in insertion connection through the insertion strips. According to the triangular supporting structure, the rapid disassembly and assembly connecting structures are designed at the two ends of the air cylinder respectively, rapid replacement of the air cylinder is achieved, and more balanced force distribution is achieved through the designed triangular supporting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a variable diameter wheel triangle support mechanism and a laser tube cutting machine using the same. Background Art

[0002] When dealing with laser cutting processing of longer pipes, special attention should be paid to the stability and support method of the pipes during transportation. For pipes of different diameters, the use of rotatable cam support is an effective method. For example, according to a laser pipe cutting machine cam support mechanism with application number CN201921529154.4, the mechanism includes a support frame and a lifting cylinder for supporting the cam, and the fixed ends of the support frame and the lifting cylinder are provided with connecting seats, one side of the two connecting seats is rotatably connected to the support frame and the lifting cylinder respectively, and the other side is connected to the bed of the laser cutting machine by a number of bolts, and the two connecting seats are located on the same side. In addition, the piston rod output end of the lifting cylinder is rotatably connected to the middle part of the support frame. This design has some shortcomings in operating efficiency and mechanical application.

[0003] First of all, the lifting cylinder needs to work continuously to maintain the supporting state. Since the support frame and the fixed end of the lifting cylinder are on the same side, when the piston rod of the lifting cylinder retracts, the support frame almost remains parallel to the lifting cylinder. In this case, the vertical downward pressure of the support frame and the cam wheel thereon is mainly borne by the lifting cylinder, causing the piston rod of the lifting cylinder to be in a state of high stress for a long time. This is not the most labor-saving way of use.

[0004] Secondly, for the processing of pipes in different diameter ranges, it may be necessary to replace lifting cylinders of different specifications. In this mechanism, the two connecting seats are connected to the laser cutting machine body by several bolts, which means that every time the lifting cylinder is replaced, all the bolts need to be removed, and then all the bolts need to be installed after replacing the new lifting cylinder to complete the replacement of the lifting cylinder. This process is not only laborious but also reduces work efficiency. 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 triangular support mechanism and a laser tube cutting machine using the same.

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

[0007] A triangular support mechanism for a variable diameter wheel is used to support a variable diameter wheel body and adjust the height of the variable diameter wheel body according to pipes of different diameters. It includes a support frame and a cylinder on one side of the support frame. One end of the support frame is provided with a variable diameter wheel body, and the other end is rotatably connected to a first support that can be connected to a pipe cutting machine bed. One end of the cylinder is rotatably connected to the middle part of the support frame through a fourth support, and the other end is rotatably connected to a mounting seat that can be connected to the pipe cutting machine bed. When this support mechanism is used on a cutting machine, the support frame is driven by the cylinder, and one end of the support frame rotatably connected to the first support rotates around the pipe cutting machine bed. At this time, the other end of the support frame supports the variable diameter wheel body to move up and down relative to the pipe cutting machine bed, thereby realizing height adjustment of the variable diameter wheel body.

[0008] As the core technical concept of the utility model, the mounting base includes a second support and a third support plugged therein. One side of the second support is configured to be connected to the pipe cutting machine bed, and the other side is convexly provided with a protrusion, and a plurality of sockets are opened in the middle of the protrusion. One side of the third support is rotatably connected to the cylinder, and a plurality of plug strips are provided on the corresponding sockets on the other side, and the plug strips are plugged and connected with the second support to realize rapid assembly and disassembly of the cylinder. During use, for the processing of pipes in different diameter ranges, when replacing cylinders of different specifications, multiple third supports can be designed in advance and installed on cylinders of different specifications respectively. When replacing, it is only necessary to insert the third support of the new cylinder into the socket of the second support through the plug strip thereon to complete the replacement of the cylinder. There is no need to repeatedly disassemble and assemble a large number of bolts, which makes the operation very convenient and improves work efficiency.

[0009] As a further implementation:

[0010] The fourth support of the support mechanism includes a mounting plate connected to the support frame on one side, and a connecting block is vertically provided on the other side of the mounting plate. A connecting shaft is rotatably provided inside the connecting block, and the piston rod of the cylinder is vertically connected to the connecting shaft. There are at least two implementation methods here. The first is to rotatably set the connecting shaft inside the connecting block and connect it to the fourth support and install it on the support frame. When replacing cylinders of different specifications, the new cylinder is vertically connected to the fixed connecting shaft, which simplifies the installation process because the connecting shaft is always fixed in the same position; the second is that multiple connecting shafts can be designed in advance and vertically connected to the piston rods of cylinders of different specifications respectively. A through hole is opened on the fourth support for rotatably cooperating with the connecting shafts of cylinders of each specification. When replacing, align the connecting shaft on the new cylinder with the through hole on the fourth support, insert and rotate to connect. The operation is very convenient and saves manpower and operation time.

[0011] As a preferred embodiment, the first setting method mentioned above needs to ensure that the piston rod of the new cylinder can be correctly and conveniently aligned and connected to the connecting shaft each time the cylinder is replaced, which may have high requirements on the manufacturing accuracy and installation operation of the cylinder piston rod position. The second setting method mentioned above is preferably selected here. In this method, since the piston rod of each cylinder has a preset connecting shaft, when replacing, it is only necessary to align the new cylinder with the through hole on the fourth support, insert it and rotate it. This method reduces the need for precise alignment of the cylinder piston rod and the connecting shaft, reduces operational complexity and the probability of error, and the upper end of the piston rod is vertically connected to the connecting shaft through a connecting head, and usually the connecting head and the piston rod are threaded. If there is a problem with a cylinder, the piston rod and the connecting head can be disassembled and the cylinder can be directly replaced without disassembling the connecting shaft. Its disassembly and assembly will be faster and simpler.

[0012] To improve the strength of the connection between one end of the cylinder piston rod and the fourth support:

[0013] The connecting shaft and the connecting head are integrally manufactured to improve the connection strength between the two, thereby improving the connection strength between one end of the cylinder piston rod and the fourth support.

[0014] A boss is provided at one end of the connecting shaft, and the connecting shaft abuts against one side of the connecting block through the boss thereon, and the other end extends out of the other side of the connecting block and is provided with an anti-slip limit piece. The anti-slip limit piece can be a cotter pin, which is inserted along the diameter direction of the connecting shaft into the position where the connecting shaft extends out of the connecting block, or other structures that can limit the connecting shaft from slipping out of the fourth support.

[0015] The connection block is arranged in the middle of the mounting plate, and the support frame is detachably connected to the four corners of the mounting plate by bolts. The design increases the contact area between the mounting plate and the support frame, and ensures the firmness and reliability of the connection.

[0016] As a further implementation:

[0017] The third support includes an "L"-shaped connecting plate composed of a support plate and an intermediate plate. The insert strip is vertically arranged on the side of the intermediate plate away from the support plate, and the support plate is parallel to the insert strip. A rotating seat rotatably connected to the fixed end of the cylinder is provided on the side of the support plate away from the intermediate plate, and the side close to the intermediate plate is fitted with the protrusion. This fitting can increase the contact area, thereby improving the overall stability and bearing capacity. By adopting the "L"-shaped connecting plate design, combined with the safe insertion of the insert strip and the socket and the flexible connection of the rotating seat, this not only improves the overall performance of the support mechanism, but also increases the convenience and reliability of use.

[0018] The length of the inserting strip is greater than the vertical depth of the inserting hole, so as to ensure that the inserting strip will not fall out of the inserting hole even under a large load, thereby enhancing the safety and reliability of the entire structure.

[0019] The utility model also provides a laser tube cutting machine, including a tube cutting machine and the above-mentioned variable diameter wheel triangular support mechanism connected thereto, wherein the first support and the second support are located on different sides, and the fourth support is located between the first support and the second support. In this support structure, when external force acts on the variable diameter wheel body, the force will not be concentrated on a certain support, but will be transmitted to three different supports through the support frame of the support structure. Since the three supports are located at different positions, the number of force points is increased. Compared with the traditional design of supports on the same side, the three fulcrums can distribute the load more evenly, reducing excessive reliance on any one fulcrum. Each support bears a part of the force, thereby realizing force dispersion. The support structure utilizes the stability of the triangle and the principle of mechanical balance to achieve a more balanced force distribution, improve the overall stability and carrying capacity, thereby improving the operating efficiency and safety of the equipment.

[0020] The beneficial effects of the utility model are:

[0021] 1. This laser tube cutting machine disperses the force to three fulcrums through a triangular support structure, and uses the stability of the triangle and the principle of mechanical balance to achieve a more balanced force distribution. This design not only enhances the stability and carrying capacity of the entire mechanism, but also improves the operating efficiency and safety of the equipment;

[0022] 2. This triangular support structure realizes the rapid replacement of the cylinder by means of the quick disassembly and assembly connection structures designed at both ends of the cylinder (the disassembly and assembly connection structure between the fourth support and the cylinder piston rod and the plug-in connection structure between the second support and the third support). Compared with the traditional bolt connection method, it has a simple structure and is easy to disassemble and assemble, which effectively improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the attached picture:

[0024] Figure 1 This is a front view of a variable diameter wheel triangular support mechanism of the utility model (installed on a cutting machine);

[0025] Figure 2 for Figure 1 A top view of

[0026] Figure 3 for Figure 1 Installation diagram between the fourth support and the cylinder piston rod;

[0027] Figure 4 for Figure 2 AA section diagram of (mounting structure between the fourth support and the cylinder piston rod);

[0028] The components represented by the reference numerals in the figure are:

[0029] 1. Support frame; 2. Piston rod; 3. Fourth support; 31. Mounting plate; 32. Connecting block; 4. Second support; 41. Boss; 5. Third support; 51. Connecting plate; 52. Insert; 6. Connecting shaft. DETAILED DESCRIPTION

[0030] Combination Figure 1 and Figure 2 The present embodiment provides a triangular support mechanism for a variable diameter wheel, which is used to support a variable diameter wheel body and adjust the height of the variable diameter wheel body according to pipes of different diameters.

[0031] This supporting mechanism includes a supporting frame 1 and a cylinder on one side of the supporting frame 1. A reducing wheel body is provided at one end of the supporting frame 1, and a first support which can be connected to the pipe cutting machine bed is rotatably connected at the other end. The end of the piston rod 2 at the upper part of the cylinder is rotatably connected to the middle part of the supporting frame 1 through a fourth support 3, and a mounting seat which can be connected to the pipe cutting machine bed is rotatably connected at the fixed end at the lower part of the cylinder. When in use, the supporting frame 1 is driven by the cylinder, and one end of the supporting frame 1 which is rotatably connected to the first support rotates around the pipe cutting machine bed. At this time, the other end of the supporting frame 1 supports the reducing wheel body to move up and down relative to the pipe cutting machine bed, thereby realizing height adjustment of the reducing wheel body.

[0032] Specifically, the structure of the fourth support 3 is as follows:

[0033] The fourth support 3 includes a mounting plate 31 connected to the support frame 1 on one side, and a connecting block 32 is vertically provided on the other side of the mounting plate 31. A connecting shaft 6 is rotatably provided inside the connecting block 32. The piston rod 2 of the cylinder is vertically connected to the connecting shaft 6, and the connecting block 32 is arranged in the middle of the mounting plate 31. The support frame 1 is detachably connected to the four corner positions of the mounting plate 31 by bolts. Its design increases the contact area between the mounting plate 31 and the support frame 1, thereby ensuring the firmness and reliability of the connection.

[0034] The connection between the piston rod 2 and the fourth support 3 can be realized in at least two ways. The first way is to rotate the connecting shaft 6 inside the connecting block 32 and connect it with the fourth support 3 and install it on the support frame 1. When replacing a cylinder with a different specification, the new cylinder is vertically connected to the fixed connecting shaft 6, which simplifies the installation process because the connecting shaft 6 is always fixed in the same position. The second way is to rotate the connecting shaft 6 inside the connecting block 32 and connect it with the fourth support 3 and install it on the support frame 1. When replacing a cylinder with a different specification, the new cylinder is vertically connected to the fixed connecting shaft 6, which simplifies the installation process because the connecting shaft 6 is always fixed in the same position. Figure 3 and Figure 4 ), multiple connecting shafts 6 can be designed in advance, and they can be vertically connected to the piston rods 2 of cylinders of different specifications respectively. A through hole is opened on the fourth support 3 for rotating with the connecting shafts 6 of cylinders of various specifications. When replacing, align the connecting shaft 6 on the new cylinder with the through hole on the fourth support 3, insert it and rotate it to connect. The operation is very convenient, saving manpower and operation time.

[0035] Each time the cylinder is replaced, it is necessary to ensure that the piston rod 2 of the new cylinder can be correctly and conveniently aligned and connected to the connecting shaft 6. This may require higher manufacturing accuracy and installation operation of the cylinder piston rod 2 position. Here, the second setting method mentioned above is preferred.

[0036] like Figure 3 and Figure 4 As shown, in the second setting method, since the piston rod 2 of each cylinder has a preset connecting shaft 6, when replacing, it is only necessary to align the new cylinder with the through hole on the fourth support 3, insert it and rotate it to connect. This method reduces the need for precise alignment of the cylinder piston rod 2 and the connecting shaft 6, reduces the operation complexity and the probability of error, and the upper end of the piston rod 2 is vertically connected to the connecting shaft 6 through a connecting head, and usually the connecting head and the piston rod 2 are threaded. If a problem occurs in a cylinder, the piston rod 2 can be disassembled from the connecting head and the cylinder can be directly replaced without disassembling the connecting shaft 6, and its disassembly and assembly will be faster and simpler.

[0037] Combination Figure 4 In this embodiment, the connecting shaft 6 and the connecting head are integrally manufactured to improve the connection strength between the two, thereby improving the connection strength of the overall structure. A boss is also provided at one end of the connecting shaft 6 close to the piston rod 2, and the connecting shaft 6 abuts against one side of the connecting block 32 through the boss thereon, and the other end extends out of the other side of the connecting block 32 and is provided with an anti-slip limiter. A round gasket is also sleeved on the connecting shaft 6 between the connecting head and the anti-slip limiter, wherein the anti-slip limiter is a cotter pin. When in use, the cotter pin is inserted into the position where the connecting shaft 6 extends out of the connecting block 32 along the diameter direction of the connecting shaft 6 to complete the limiting of the connecting shaft 6, and an oil-free bushing is also provided between the outer ring of the connecting shaft 6 and the inner wall of the socket. For this kind of shaft-hole rotating connection that bears radial load, the use of an oil-free bushing can not only effectively disperse the load but also reduce wear.

[0038] Specifically for the structure of the mounting seat:

[0039] The mounting base includes a second support 4 and a third support 5. One side of the second support 4 is detachably connected to the pipe cutting machine body by bolts, and the other side is convexly provided with a protrusion 41, and a plurality of insertion holes are opened in the middle of the protrusion 41. One side of the third support 5 is rotatably connected to the fixed end of the cylinder, and a plurality of insertion strips 52 are provided corresponding to the insertion holes on the other side, and are plug-connected to the second support 4 through the insertion strips 52. For the processing of pipes in different diameter ranges, when replacing cylinders of different specifications, multiple third supports 5 can be designed in advance and installed on cylinders of different specifications respectively. When replacing, it is only necessary to insert the third support 5 of the new cylinder into the insertion hole of the second support 4 through the insertion strips 52 thereon to complete the replacement of the cylinder. There is no need to repeatedly disassemble and assemble a large number of bolts, which makes the operation very convenient and improves work efficiency.

[0040] For the structure of the third support 5, combined Figure 1 Specifically:

[0041] The third support 5 includes an "L"-shaped connecting plate 51 composed of a support plate and an intermediate plate, an insert 52 is vertically arranged on a side of the intermediate plate away from the support plate, and the support plate is parallel to the insert 52, and a rotating seat rotatably connected to the fixed end of the cylinder is provided on the side of the support plate away from the intermediate plate, and the side close to the intermediate plate is fitted with the protrusion 41, and this fitting can increase the contact area, thereby improving the overall stability and bearing capacity. By adopting the "L"-shaped connecting plate 51 design, combined with the safe insertion of the insert 52 and the socket and the flexible connection of the rotating seat, this not only improves the overall performance of the support mechanism, but also increases the convenience and reliability of use.

[0042] Based on the above design, the length of the inserting strip 52 is greater than the vertical depth of the inserting hole, so as to ensure that the inserting strip 52 will not fall out of the inserting hole even under a large load, thereby enhancing the safety and reliability of the entire structure.

[0043] The utility model also provides a laser tube cutting machine, comprising the tube cutting machine and the above-mentioned variable diameter wheel triangular supporting mechanism connected thereto.

[0044] Based on the above design, the first support and the second support 4 are located on different sides (such as Figure 1 ), the fourth support 3 is located between the first support and the second support 4. In this laser tube cutting machine, when external force (tube) acts on the variable diameter wheel body, this force will not be concentrated on a certain support, but transmitted to three different supports through the support frame 1 of the support structure. Since there are three supports located at different positions, the number of force points is increased. Compared with the traditional design of supports on the same side, the three fulcrums can distribute the load more evenly and reduce excessive reliance on any one fulcrum. Each support bears part of the force respectively, thereby realizing force dispersion. The support structure utilizes the stability of the triangle and the principle of mechanical balance to achieve a more balanced force distribution, improve the overall stability and carrying capacity, thereby improving the operating efficiency and safety of the equipment.

Claims

1. A variable diameter wheel triangular support mechanism, comprising a support frame (1) and a cylinder on one side thereof, wherein one end of the support frame (1) is provided with a variable diameter wheel body, and the other end is rotatably connected to a first support capable of being connected to a pipe cutting machine bed, one end of the cylinder is rotatably connected to a middle portion of the support frame (1) through a fourth support (3), and the other end is rotatably connected to a mounting seat capable of being connected to a pipe cutting machine bed, characterized in that: The mounting seat comprises a second support (4) and a third support (5) plug-connected thereto, one side of the second support (4) being configured to be connectable to a pipe cutting machine bed, and the other side of the second support being provided with a protruding block (41); A plurality of insertion holes are provided in the middle of the protrusion (41); one side of the third support (5) is rotatably connected to the cylinder; the other side is provided with a plurality of insertion strips (52) corresponding to the insertion holes, and is plug-connected to the second support (4) via the insertion strips (52).

2. A variable diameter wheel triangular support mechanism as claimed in claim 1, characterized in that: The fourth support (3) comprises a mounting plate (31) connected to the support frame (1) on one side, and a connecting block (32) is vertically provided on the other side of the mounting plate (31); A connecting shaft (6) is rotatably arranged inside the connecting block (32), and the piston rod (2) of the cylinder is vertically connected to the connecting shaft (6).

3. A variable diameter wheel triangular support mechanism as claimed in claim 2, characterized in that: One end of the connecting shaft (6) is provided with a boss abutting against one side of the connecting block (32), and the other end extends out of the other side of the connecting block (32) and is provided with an anti-dropping limiter.

4. A variable diameter wheel triangular support mechanism as claimed in claim 2, characterized in that: The third support (5) comprises an "L"-shaped connecting plate (51) composed of a supporting plate and an intermediate plate, the inserting strip (52) is vertically arranged on a side of the intermediate plate away from the supporting plate, and the supporting plate is parallel to the inserting strip (52); A rotating seat rotatably connected to the fixed end of the cylinder is provided on the side of the support plate facing away from the middle plate, and the side close to the middle plate is in contact with the protrusion (41).

5. The variable diameter wheel triangular support mechanism according to claim 1, characterized in that: The length of the inserting strip (52) is greater than the vertical depth of the inserting hole.

6. The variable diameter wheel triangular support mechanism according to claim 2, characterized in that: The connecting block (32) is located in the middle of the mounting plate (31), and the supporting frame (1) is detachably connected to the four corners of the mounting plate (31) via bolts.

7. The variable diameter wheel triangular support mechanism according to claim 2, characterized in that: The upper end of the piston rod (2) is vertically connected to the connecting shaft (6) via a connecting head.

8. The variable diameter wheel triangular support mechanism according to claim 7, characterized in that: The connecting shaft (6) and the connecting head are integrally manufactured and formed.

9. A laser tube cutting machine, characterized in that: It comprises a pipe cutting machine and a variable diameter wheel triangular support mechanism as described in any one of claims 1 to 8 connected thereto, wherein the first support and the second support (4) are located on different sides.

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