Variable diameter wheel support mechanism and laser tube cutting machine support device containing the mechanism

Abstract

This utility model discloses a variable diameter wheel support mechanism and a laser tube cutting machine support device containing the mechanism. The support mechanism includes a support base, a variable diameter wheel, a rotating shaft, a worm gear, and a worm. The variable diameter wheel has a gradually changing groove along its circumference. The rotating shaft passes through the variable diameter wheel and is rotatably connected to the support base. One end of the rotating shaft is connected to the worm gear. The worm gear is rotatably connected to the support base and meshes with the worm gear. This support mechanism allows for more precise adjustment of the variable diameter wheel support height, achieving better tube support, effectively preventing over-support and under-support, improving the stability of product support, and enhancing product processing quality. The laser tube cutting machine support device includes at least two variable diameter wheel support mechanisms. Each pair of adjacent variable diameter wheel support mechanisms is connected by a connecting component, enabling synchronous adjustment of the angles of multiple variable diameter wheels. This simplifies the operation process, reduces the workload of manually adjusting the angles of the variable diameter wheels, and lowers the probability of errors, making it highly practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe cutting, and in particular relates to a diameter-changing wheel supporting mechanism and a laser pipe cutting machine supporting device containing the mechanism. Background Art

[0002] Laser tube cutting machines generally include a bed, a front chuck set at the front end of the bed, and a rear chuck slidably set on the bed. Both the front chuck and the rear chuck are used to clamp the pipe to be processed. However, for pipes with longer lengths, auxiliary support measures are required to suppress the deformation of the pipes and improve the processing quality. Since the variable diameter wheel can be applied to pipes of different specifications, laser tube cutting machines often use a variable diameter wheel support mechanism for auxiliary support.

[0003] like Figure 1 As shown, when the existing variable diameter wheel support mechanism is used, after the variable diameter wheel 1 is rotated and adjusted to the corresponding angle, the pin 2 is inserted into the socket 3 provided on the end face of the variable diameter wheel to achieve angle locking, resulting in the inability to achieve stepless adjustment of the rotation angle, and the requirement of fine adjustment support cannot be met, making the product prone to shaking during the cutting process. Therefore, it is urgent to improve the structure of the variable diameter wheel support mechanism, and propose a variable diameter wheel support mechanism to achieve more precise pipe support, improve the stability of product support, and improve product processing quality. Utility Model Content

[0004] In view of the deficiencies in the background technology, the utility model provides a variable diameter wheel support mechanism, which can achieve more precise pipe support, improve the support stability of the product, and improve the product processing quality.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A variable diameter wheel support mechanism, characterized in that it includes a support seat, a variable diameter wheel, a rotating shaft, a worm wheel and a worm, the variable diameter wheel is provided with a variable diameter groove with a gradually changing width along its circumferential direction, the rotating shaft passes through the variable diameter wheel and is rotatably connected to the support seat, one end of the rotating shaft is connected to the worm wheel, the worm is rotatably connected to the support seat and meshes with the worm wheel.

[0007] Preferably, the worm is connected to a hand wheel.

[0008] Preferably, a locking handle is threadedly connected to the support seat, and the end of the locking handle cooperates with a locking groove provided on the worm.

[0009] Preferably, a mounting seat is provided below the support seat, a cylinder is provided on the mounting seat, and an output shaft of the cylinder is connected to the support seat.

[0010] Preferably, a guide rod is connected to the lower end of the support seat, and the guide rod is slidably connected to the mounting seat.

[0011] Preferably, one end of the rotating shaft is connected to a dial, and the dial cooperates with a pointer arranged on the support seat.

[0012] A laser tube cutting machine support device comprises at least two variable diameter wheel support mechanisms, each two adjacent variable diameter wheel support mechanisms are connected by a connecting assembly, the connecting assembly comprises a connecting rod and two universal couplings respectively connected to the two ends of the connecting rod, a limiting hole and a waist-shaped hole are respectively provided at both ends of the worm of each variable diameter wheel support mechanism, and the two universal couplings are respectively connected with the limiting hole and the waist-shaped hole.

[0013] A laser tube cutting machine support device also includes a support frame, and at least two variable diameter wheel support mechanisms are evenly spaced and arranged on the support frame along the same straight line.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The variable diameter wheel support mechanism of the utility model utilizes the transmission cooperation of the worm gear and the worm to effectively realize the stepless adjustment of the variable diameter wheel, so that it can better match the specifications of the pipe to be processed. Combined with the cylinder to control the lifting movement of the variable diameter wheel, the variable diameter wheel support height can be adjusted more finely, achieving a better pipe support effect, effectively preventing the occurrence of over-support and under-support, improving the stability of the product support, and improving the product processing quality;

[0016] (2) The variable diameter wheel support mechanism of the utility model can quantitatively display the current variable diameter wheel angle and its corresponding support condition by adding a pointer and a dial, which can be recorded and reproduced, thereby improving the adjustment efficiency and accuracy in the mixed production process of multi-specification pipes; (3) The support device of the utility model can realize the synchronous adjustment of the angles of multiple variable diameter wheels, which not only simplifies the operation process and reduces the workload of manually adjusting the angles of the variable diameter wheels, but also reduces the probability of errors, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the variable diameter wheel support mechanism in the prior art;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 4 For this utility model Figure 3 AA section structural diagram;

[0022] Figure 5 This is a schematic diagram of the worm wheel and worm connection structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the worm structure of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the support device of the utility model;

[0025] Figure 8 For this utility model Figure 7 The enlarged structural diagram at B in the middle;

[0026] Fig. 9 This is a schematic diagram of the use status of the support device of the utility model;

[0027] In the figure: 1, reducing wheel, 101, reducing groove, 2, latch, 3, socket, 4, support seat, 5, rotating shaft, 6, worm wheel, 7, worm, 701, locking groove, 702, limiting hole, 703, waist-shaped hole, 8, handwheel, 9, locking handle, 10, mounting seat, 11, cylinder, 12, guide rod, 13, dial, 14, pointer, 15, connecting rod, 16, universal coupling, 17, support frame, 18, pipe, 19, clamping chuck. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 2 to 5 As shown, a variable diameter wheel support mechanism includes a support seat 4, a variable diameter wheel 1, a rotating shaft 5, a worm wheel 6 and a worm 7. The variable diameter wheel is provided with a variable diameter groove 101 with a gradually changing width along its circumferential direction. The rotating shaft passes through the variable diameter wheel and is rotatably connected to the support seat. The variable diameter wheel is located at the upper end of the support seat. The groove width at its top is adjusted by rotating the variable diameter wheel to match the outer diameter of the pipe. One end of the rotating shaft is connected to the worm wheel. The worm is rotatably connected to the support seat and meshes with the worm wheel. A hand wheel 8 is connected to the worm. The operator holds the hand wheel and rotates it by hand to drive the worm to rotate. The worm drives the worm wheel to rotate, thereby realizing stepless adjustment of the variable diameter wheel, meeting more refined auxiliary support for pipes of different specifications, effectively preventing the occurrence of over-support and under-support, improving the stability of the product support, and improving the product processing quality. In this embodiment, a cavity is provided inside the support seat, and the worm wheel and worm transmission parts are arranged in the cavity to ensure the stability of the transmission mechanism operation. The worm runs through the support seat, and its two ends are located outside the support seat. In order to achieve precise adjustment of the rotation angle of the variable diameter wheel and improve accuracy, a dial 13 is connected to one end of the rotating shaft. The dial is located outside the cavity and cooperates with a pointer 14 arranged on the support seat. The dial is preset with a corresponding angle value, and quantitatively displays the current variable diameter wheel angle and its corresponding support condition, which can be recorded and reproduced, thereby improving the adjustment efficiency and accuracy in the mixed production process of multi-specification pipes.

[0032] like Figure 5 and Figure 6 As shown, in order to ensure the stability of the angle of the reducing wheel after adjustment, a locking handle 9 is threadedly connected to the support seat, and the output end of the locking handle extends into the cavity inside the support seat, and cooperates with the locking groove 701 provided on the worm. The output end of the locking handle is a ball-star arc structure, and the vertical cross-section of the locking groove is a cone shape (small inside and large outside). By screwing the locking handle, when its output end is embedded in the locking groove and contacts the inner wall of the locking groove, the worm can be locked and fixed to avoid shaking during pipe processing.

[0033] like Figures 1 to 3 As shown, a mounting seat 10 is provided below the support seat, and a cylinder 11 is provided on the mounting seat. The output shaft of the cylinder is connected to the support seat and is used to adjust the height of the support seat to achieve effective support of the pipe. A guide rod 12 is connected to the lower end of the support seat, and the guide rod is slidably connected to the mounting seat to ensure the stability of the lifting movement of the support seat.

[0034] like Figure 7 and Figure 8 As shown, a plurality of variable diameter wheel support mechanisms are used in combination to form a laser tube cutting machine support device, the support device comprising at least two variable diameter wheel support mechanisms and a support frame 17, at least two variable diameter wheel support mechanisms are evenly spaced along the same straight line on the support frame (tube cutting machine bed), and are installed between the front chuck and the rear chuck during actual movement, and each two adjacent variable diameter wheel support mechanisms are connected by a connecting assembly, the connecting assembly comprising a connecting rod 15 and two universal couplings 16 respectively connected to both ends of the connecting rod, the universal coupling is a prior art product, and is assembled and connected to the shaft by means of locating pins, and the specific structure is not repeated here, and the attached drawings of this embodiment show a cross-axis universal coupling. This support device utilizes the characteristics of the universal coupling to make the two shafts (connecting rod and worm) not on the same axis. When there is an axis angle, the two connected shafts can rotate continuously and reliably transmit torque and motion. Therefore, by rotating the hand wheel of one of the variable diameter wheel support mechanisms, the angle of the variable diameter wheels of multiple variable diameter wheel support mechanisms can be adjusted synchronously, which simplifies the operation process, reduces the workload of manually adjusting the angle of the variable diameter wheel, and reduces the probability of error. Another advantage of the above structure is that it does not affect the lifting and lowering movement of each variable diameter wheel support mechanism. Since each variable-diameter wheel support mechanism needs to achieve height adjustment during operation, the distance between the two variable-diameter wheels will change. Therefore, a limiting hole 702 and a waist-shaped hole 703 are respectively provided at both ends of the worm of each variable-diameter wheel support mechanism in the support device. The two universal couplings are respectively connected with the limiting hole and the waist-shaped hole. The length direction of the waist-shaped hole is parallel to the axis of the worm shaft. The universal coupling is respectively assembled and connected with the limiting hole and the waist-shaped hole through a locating pin, and the locating pin of the waist-shaped hole can slide along its length direction, thereby adapting to the change in the distance between the two variable-diameter wheels caused by the height change.

[0035] The method of using the utility model is as follows:

[0036] According to the specifications of the pipe 18 to be processed, the hand wheel 8 of one of the diameter reducing wheel support mechanisms is rotated, and the display of the pointer 14 and the dial 13 is used to accurately rotate the diameter reducing wheel 1 to the corresponding angle so that the width of the diameter reducing groove 101 matches the outer diameter of the pipe. The front chuck and the rear chuck clamp the two ends of the pipe respectively, and the rear chuck slides along the machine body with the pipe. Fig. 9 As shown in the four state diagrams (a), (b), (c), and (d), when the corresponding reducing wheel support mechanism is about to be reached, the cylinder 11 of the reducing wheel support mechanism contracts and lowers its overall height to avoid the clamping chuck 19. After the clamping chuck 19 passes over the reducing wheel 1, the cylinder 11 extends again to use the reducing wheel 1 at the top to provide auxiliary support for the pipe 18, and so on.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A variable diameter wheel support mechanism, characterized in that: It includes a support seat, a reducing wheel, a rotating shaft, a worm wheel and a worm. The reducing wheel is provided with a reducing groove with a gradually changing width along its circumferential direction. The rotating shaft passes through the reducing wheel and is rotatably connected to the support seat. One end of the rotating shaft is connected to the worm wheel. The worm is rotatably connected to the support seat and meshes with the worm wheel.

2. A variable diameter wheel support mechanism as claimed in claim 1, characterized in that: The worm is connected with a hand wheel.

3. A variable diameter wheel support mechanism according to claim 1, characterized in that: A locking handle is threadedly connected to the support seat, and the end of the locking handle cooperates with a locking groove arranged on the worm.

4. A variable diameter wheel support mechanism according to claim 1, characterized in that: A mounting seat is arranged below the support seat, a cylinder is arranged on the mounting seat, and an output shaft of the cylinder is connected to the support seat.

5. A variable diameter wheel support mechanism as claimed in claim 4, characterized in that: The lower end of the support seat is connected with a guide rod, and the guide rod is slidably connected with the mounting seat.

6. A variable diameter wheel support mechanism according to claim 1, characterized in that: One end of the rotating shaft is connected with a dial, and the dial cooperates with a pointer arranged on the supporting seat.

7. A laser tube cutting machine support device, characterized in that: It comprises at least two variable-diameter wheel support mechanisms as described in any one of claims 1 to 6, and each adjacent two variable-diameter wheel support mechanisms are connected by a connecting assembly, and the connecting assembly comprises a connecting rod and two universal couplings respectively connected to both ends of the connecting rod, and both ends of the worm of each of the variable-diameter wheel support mechanisms are respectively provided with a limiting hole and a waist-shaped hole, and the two universal couplings are respectively connected with the limiting hole and the waist-shaped hole.

8. A laser tube cutting machine support device as claimed in claim 7, characterized in that: It also includes a support frame, and at least two of the variable diameter wheel support mechanisms are evenly spaced and arranged on the support frame along the same straight line.

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