Raw material supporting device for laser pipe cutting machine

Abstract

The utility model relates to the technical field of pipe cutting machines, and discloses a raw material supporting device for a laser pipe cutting machine, which comprises a lifting seat, a driving part for driving the lifting seat to move in the vertical direction and two variable-diameter wheel seats arranged on the lifting seat, the two variable-diameter wheel seats are oppositely arranged, and each variable-diameter wheel seat is provided with a variable-diameter wheel; a limiting space is formed between the two variable-diameter wheels, the two variable-diameter wheel seats can move in the direction close to each other or away from each other, so that the width of the limiting space can be changed, and when a pipe fitting is cut, the two variable-diameter wheel seats are adjusted according to the size of the pipe fitting; according to the laser pipe cutting machine, the limiting space is arranged in the limiting space, so that a pipe fitting is located in the limiting space and can abut against the two variable-diameter wheels after being installed on a machine tool of the laser pipe cutting machine, the two variable-diameter wheels limit the axial left side and the axial right side of the pipe fitting, the influence of swinging of the pipe fitting on the cutting precision when the pipe fitting is cut is avoided, and the cutting precision of the pipe fitting is improved.

Description

Technical Field

[0001] This application belongs to the technical field of pipe cutting machines, and particularly relates to a raw material support device for a laser pipe cutting machine. Background Art

[0002] Laser pipe cutting is a new cutting technology, which is a high-efficiency and high-precision cutting method using a laser beam with a high energy density as a heat source. It is used to cut short materials with specific dimensions on pipe fittings, and has the advantages of fast cutting speed, high production efficiency, and high cutting surface quality. With the continuous development of laser technology and numerical control technology, laser cutting has now become an advanced processing method in the industrial pipe cutting field.

[0003] Currently, a diameter-changing wheel support mechanism is arranged on the machine tool of the existing laser pipe cutting machine. It includes a lifting seat that can move along the height direction of the machine tool and a diameter-changing wheel provided on the lifting seat. A limiting groove is provided on the diameter-changing wheel, and the width of the limiting groove gradually decreases along the circumferential direction of the diameter-changing wheel, so as to adjust the diameter-changing wheel when cutting different pipe fittings, and then enable the diameter-changing wheel to support the pipe fittings. However, when cutting square pipes, due to the limited depth of the limiting groove, the diameter-changing wheel can only support the bottom of the square pipe and cannot limit the square pipe left and right. Therefore, when cutting the square pipe at high speed, the square pipe will swing, which in turn affects the cutting accuracy of the square pipe. Summary of the Utility Model

[0004] This application provides a raw material support device for a laser pipe cutting machine to avoid the situation of the square pipe swinging when cutting the square pipe at high speed, thereby improving the cutting accuracy of the square pipe.

[0005] The technical solution adopted in this application is as follows:

[0006] A raw material support device for a laser pipe cutting machine includes a lifting seat, a driving member for driving the lifting seat to move in the vertical direction, and two diameter-changing wheel seats provided on the lifting seat. The two diameter-changing wheel seats are arranged oppositely, and a diameter-changing wheel is provided on each diameter-changing wheel seat. A limiting space is formed between the two diameter-changing wheels, and the two diameter-changing wheel seats can move in the direction of approaching or separating from each other, so that the width of the limiting space can change.

[0007] By adopting the above technical solution, when cutting pipe fittings, first adjust the two variable-diameter wheel seats according to the size of the pipe, then change the distance between the two variable-diameter wheel seats, so as to change the distance between the two variable-diameter wheels, thereby changing the width of the limiting space. Finally, after the pipe fitting is installed on the machine tool of the laser pipe cutting machine and is located in the limiting space and can abut against the two variable-diameter wheels, the two variable-diameter wheels limit the left and right sides of the pipe fitting axially, so as to avoid the situation that the pipe fitting swings during the high-speed cutting of the pipe fitting, that is, avoid the influence of the swing of the pipe fitting on the cutting accuracy when cutting the pipe fitting, and further improve the cutting accuracy of the pipe fitting.

[0008] Optionally, the lifting seat is provided with guide rods, and the two variable-diameter wheel seats are both slidably connected to the guide rods.

[0009] By adopting the above technical solution, when adjusting the two variable-diameter wheels, the variable-diameter wheel seat slides relative to the guide rod, and then the guide rod guides the movement of the variable-diameter wheel seat to increase the stability of the movement of the variable-diameter wheel seat. At the same time, the guide rod can also support the variable-diameter wheel seat to increase the support stability of the variable-diameter wheel seat for the variable-diameter wheel, and further ensure the limiting effect on the left and right sides of the pipe fitting axially.

[0010] Optionally, the lifting seat is further provided with a power member, and the power member is connected to the two variable-diameter wheel seats to drive the two variable-diameter wheel seats to move in a direction close to or away from each other.

[0011] By adopting the above technical solution, since the lifting seat is provided with a power member, the power member can automatically adjust the variable-diameter wheel seat, so as to avoid the situation that the variable-diameter wheel seat needs to be adjusted manually, thereby improving the automation level of the raw material support device, improving the cutting efficiency of the pipe, and reducing the labor cost when cutting the pipe at the same time.

[0012] Optionally, the power member has a telescopic rod, and two linkage rods are respectively hinged to the two variable-diameter wheel seats, and the ends of the two linkage rods far from the variable-diameter wheel seats are respectively hinged to the telescopic rod.

[0013] By adopting the above technical solution, when adjusting the variable-diameter wheel, start the power member, and then the telescopic rod of the power member moves. Since the two ends of the linkage rod are respectively hinged to the variable-diameter wheel seat and the telescopic rod, the telescopic rod drives the linkage rod to move, and the linkage rod drives the variable-diameter wheel seat to move, so that the variable-diameter wheel seat drives the variable-diameter wheel to move, thereby realizing the synchronous movement of the two variable-diameter wheels, and the movement speeds of the two variable-diameter wheels are the same, and further realizing the precise adjustment of the variable-diameter wheel, and avoiding the situation that two power members need to be set, and further reducing the production cost of the raw material support device.

[0014] Optionally, a connecting seat is slidably connected to the lifting seat in the vertical direction, the telescopic rod is connected to the connecting seat, and one end of each of the two linkage rods away from the variable-diameter wheel seat is hinged to the connecting seat.

[0015] By adopting the above technical solution, when the power component works, the telescopic rod of the power component moves, and the telescopic rod drives the connecting seat to move, so that the connecting seat and the lifting seat slide relative to each other. Since the linkage rod is hinged to the connecting seat, the connecting seat then drives the two linkage rods to move, thereby realizing that the two linkage rods drive the two variable-diameter wheel seats to move towards each other or away from each other. By setting the connecting seat, the situation where the linkage rods are connected to the telescopic rod is avoided, which is more convenient for arranging the power component and the linkage rods, so as to greatly reduce the volume of the raw material support device and increase the connection stability between the linkage rod and the telescopic rod.

[0016] Optionally, the lifting seat is provided with a guide rail, and the connecting seat is provided with a slider slidably connected to the guide rail.

[0017] By adopting the above technical solution, when the power component drives the connecting seat to move, the connecting seat drives the slider to move, and then the slider and the guide rail slide relative to each other, so that the sliding fit between the slider and the guide rail guides the moving direction of the connecting seat, so as to increase the movement stability of the connecting seat, and further ensure the adjustment effect on the variable-diameter wheel.

[0018] Optionally, the lifting seat is provided with a mounting bracket, the power component is arranged on the mounting bracket, and the mounting bracket is provided with an avoidance space that forms an avoidance with the connecting seat and the linkage rod.

[0019] By adopting the above technical solution, since the power component is arranged on the mounting bracket, the connection stability between the power component and the lifting seat is increased. At the same time, the mounting bracket is provided with an avoidance space that forms an avoidance with the connecting seat and the linkage rod, so as to ensure the normal movement of the connecting seat and the linkage rod, so as to ensure the adjustment range of the variable-diameter wheel. In addition, the structural layout of the raw material support device is made more reasonable, so as to reduce the volume of the raw material support device.

[0020] Optionally, it further includes a fixed seat, the fixed seat is fixedly connected to the machine tool of the laser pipe cutting machine, and the driving component is arranged on the fixed seat and acts on the lifting seat.

[0021] By adopting the above technical solution, when the raw material support device needs to be lifted, the driving component is started, the fixed seat supports the driving component, and then the driving component drives the lifting seat. The lifting seat moves in the vertical direction, so that the lifting seat drives the variable-diameter wheel to move in the vertical direction, thereby realizing the adjustment of the variable-diameter wheel in the vertical direction. At the same time, the setting of the fixed seat also realizes the connection between the raw material support device and the machine tool of the laser pipe cutting machine, and increases the connection stability between the raw material support device and the machine tool of the laser pipe cutting machine.

[0022] Optionally, the lifting seat is provided with a slide rail, and the fixed seat is provided with a sliding block slidably connected to the slide rail.

[0023] By adopting the above technical solution, when the driving member drives the lifting seat, the lifting seat drives the slide rail to move, and then the slide rail and the sliding block slide relative to each other, so that the sliding fit between the slide rail and the sliding block guides the movement of the lifting seat, thereby increasing the stability of the lifting seat during movement. At the same time, the sliding fit between the slide rail and the sliding block can also increase the connection stability between the lifting seat and the fixed seat to ensure the axial left and right limiting effects of the diameter-changing wheel on the pipe fitting.

[0024] Optionally, each diameter-changing wheel is rotatably connected to a corresponding diameter-changing wheel seat. Each diameter-changing wheel seat is provided with a scale disk located at the top of the diameter-changing wheel. Each diameter-changing wheel is provided with a pin shaft that can pass through the corresponding diameter-changing wheel seat to lock the diameter-changing wheel.

[0025] By adopting the above technical solution, since the diameter-changing wheel seat is provided with a scale disk, it is convenient to adjust the diameter-changing wheel to ensure the axial left and right limiting effects of the diameter-changing wheel on the pipe fitting. Since each diameter-changing wheel is provided with a pin shaft that can pass through the diameter-changing wheel seat, the pin shaft can lock the diameter-changing wheel to avoid the situation that the diameter-changing wheel may rotate relative to the diameter-changing wheel seat when the diameter-changing wheel limits the axial left and right sides of the pipe fitting, thereby ensuring the axial left and right limiting effects of the diameter-changing wheel on the pipe fitting and ensuring the cutting accuracy of the pipe fitting.

[0026] Due to the adoption of the above technical solution, the beneficial effects obtained by this application are as follows:

[0027] 1. The raw material support device in this application includes a lifting seat, a driving member for driving the lifting seat to move in the vertical direction, and two diameter-changing wheel seats provided on the lifting seat. The two diameter-changing wheels are arranged oppositely, and each diameter-changing wheel seat is provided with a diameter-changing wheel. A limiting space is formed between the two diameter-changing wheels. The two diameter-changing wheel seats can move in a direction close to or away from each other so that the width of the limiting space can change. When cutting a pipe fitting, first adjust the two diameter-changing wheel seats according to the size of the pipe material, then the distance between the two diameter-changing wheel seats changes, so that the distance between the two diameter-changing wheels changes, thereby changing the width of the limiting space. Finally, after the pipe fitting is installed on the machine tool of the laser pipe cutting machine and is located in the limiting space and can abut against the two diameter-changing wheels, the two diameter-changing wheels limit the axial left and right sides of the pipe fitting to avoid the situation that the pipe fitting swings during the high-speed cutting of the pipe fitting, that is, to avoid the influence of the swing of the pipe fitting on the cutting accuracy during the cutting of the pipe fitting, thereby improving the cutting accuracy of the pipe fitting.

[0028] 2. The lifting seat in this application is provided with guide rods, and both variable-diameter wheels are slidably connected to the guide rods. When adjusting the two variable-diameter wheels, the variable-diameter wheel seat slides relative to the guide rods, and then the guide rods guide the movement of the variable-diameter wheel seat to increase the stability of the movement of the variable-diameter wheel seat. At the same time, the guide rods can also support the variable-diameter wheel seat to increase the support stability of the variable-diameter wheel seat for the variable-diameter wheels, thereby ensuring the limiting effect on the left and right sides of the axial direction of the pipe fitting.

[0029] 3. The lifting seat in this application is also provided with a power component, which is connected to the two variable-diameter wheel seats to drive the two variable-diameter wheel seats to move in a direction approaching or separating from each other. Then, the power component can automatically adjust the variable-diameter wheel seats to avoid the situation of manually adjusting the variable-diameter wheel seats, thereby improving the automation level of the raw material support device, improving the cutting efficiency of the pipe, and reducing the labor cost during the cutting of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of this application and constitute a part of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0031] Figure 1 is a schematic structural diagram of the raw material support device under an embodiment of this application;

[0032] Figure 2 is a schematic structural diagram of the raw material support device from another perspective under an embodiment of this application;

[0033] Figure 3 is a schematic structural diagram of the raw material support device from yet another perspective under an embodiment of this application.

[0034] REFERENCE NUMERALS:

[0035] 1, lifting seat; 11, guide rod; 12, power component; 13, connecting seat; 131, slider; 14, guide rail; 15, mounting bracket; 16, slide rail; 2, driving component; 3, variable-diameter wheel seat; 31, variable-diameter wheel; 32, linkage rod; 33, dial; 4, fixed seat; 41, sliding block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to more clearly explain the overall concept of this application, the following will be described in detail by way of examples in combination with the drawings in the specification.

[0037] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of the present application and the features in each embodiment may be combined with each other.

[0038] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0039] In the present application, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0041] Refer to Figures 1 to 3 , a raw material support device for a laser pipe cutting machine is disclosed, which includes a lifting seat 1, a driving member 2 for driving the lifting seat 1 to move in the vertical direction, and two variable-diameter wheel seats 3 provided on the lifting seat 1. The two variable-diameter wheel seats 3 are arranged oppositely, and a variable-diameter wheel 31 is provided on each variable-diameter wheel seat 3. A limiting space is formed between the two variable-diameter wheels 31, and the two variable-diameter wheel seats 3 can move in a direction approaching or separating from each other so that the width of the limiting space can change.

[0042] It can be understood that arc-shaped notches are provided on the circumferential side surfaces of each diameter-changing wheel 31, and the cross-sectional area of the arc-shaped notches gradually increases along the circumferential direction of the diameter-changing wheel 31 to limit pipe fittings of different models.

[0043] When cutting pipe fittings, first adjust the two diameter-changing wheel seats 3 according to the size of the pipe material, then change the distance between the two diameter-changing wheel seats 3, so as to change the distance between the two diameter-changing wheels 31, thereby changing the width of the limiting space. Finally, after the pipe fitting is installed on the machine tool of the laser pipe cutting machine, it is located in the limiting space and can abut against the two diameter-changing wheels 31. That is to say, the two diameter-changing wheels 31 are respectively located on the left and right sides of the axial direction of the pipe fitting to limit the left and right sides of the axial direction of the pipe fitting, so as to avoid the situation that the pipe fitting swings during the high-speed cutting of the pipe fitting, that is, to avoid the influence of the swing of the pipe fitting on the cutting accuracy during the cutting of the pipe fitting, thereby improving the cutting accuracy of the pipe fitting.

[0044] In addition, compared with the prior art solution of using rollers to limit the left and right sides of the axial direction of pipe fittings, the technical solution in the present application does not require a servo motor, thereby reducing the production cost of the raw material support device.

[0045] It should be explained that the raw material support device in the present application can not only support pipe fittings, but also support angle steel or C-shaped steel. Among them, the pipe fittings can be not only round pipes, square pipes, but also special-shaped pipes, thereby increasing the flexibility of the raw material support device.

[0046] Refer to Figure 1 、 Figure 2 and Figure 3 In the present application, the sliding connection method between the diameter-changing wheel 31 and the lifting seat 1 is not specifically limited. Preferably, the lifting seat 1 is provided with a guide rod 11, and both diameter-changing wheel seats 3 are slidably connected to the guide rod 11.

[0047] Specifically, the diameter-changing wheel seat 3 has a guide block sleeved outside the guide rod 11 to realize the sliding connection between the diameter-changing wheel seat 3 and the guide rod 11.

[0048] When adjusting the two diameter-changing wheels 31, the diameter-changing wheel seat 3 and the guide rod 11 slide relative to each other, and then the guide rod 11 guides the movement of the diameter-changing wheel seat 3 to increase the stability of the movement of the diameter-changing wheel seat 3. At the same time, the guide rod 11 can also support the diameter-changing wheel seat 3 to increase the support stability of the diameter-changing wheel seat 3 for the diameter-changing wheel 31, thereby ensuring the limiting effect on the left and right sides of the axial direction of the pipe fitting.

[0049] In other embodiments, one of the lifting seat 1 and the variable diameter wheel seat 3 is provided with a sliding groove, and the other is provided with a block structure slidably connected to the sliding groove, so as to realize the sliding connection between the variable diameter wheel seat 3 and the lifting seat 1.

[0050] The present application does not specifically limit the sliding manner of the variable diameter wheel 31. Preferably, referring to Figure 1 , Figure 2 and Figure 3 , the lifting seat 1 is further provided with a power member 12, and the power member 12 is connected to the two variable diameter wheel seats 3 to drive the two variable diameter wheel seats 3 to move in a direction close to or away from each other.

[0051] Since the lifting seat 1 is provided with the power member 12, the power member 12 can automatically adjust the variable diameter wheel seat 3, so as to avoid the situation that the variable diameter wheel seat 3 needs to be manually adjusted, thereby improving the automation level of the raw material support device, improving the cutting efficiency of the pipe, and reducing the labor cost during the cutting of the pipe.

[0052] The present application does not specifically limit the structure of the power member 12, and it can adopt any one of the following embodiments:

[0053] Embodiment 1: In this embodiment, the power member 12 is a double-headed cylinder. That is to say, the power member 12 has two piston rods, and the two variable diameter wheel seats 3 are respectively connected to the two piston rods, so that when the power member 12 works, the two variable diameter wheel seats 3 are driven to move in a direction close to or away from each other.

[0054] Embodiment 2: In this embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the power member 12 is any one of a cylinder, a hydraulic cylinder or an electric push rod. In this embodiment, the power member 12 is a cylinder for expansion, so that the power member 12 drives the two variable diameter wheel seats 3 to move in a direction close to or away from each other.

[0055] Further, referring to Figure 1 , Figure 2 and Figure 3 , the power member 12 has a telescopic rod. That is to say, the piston rod of the cylinder constitutes the telescopic rod. The two variable diameter wheel seats 3 are both hinged with a linkage rod 32, and one end of the two linkage rods 32 far away from the variable diameter wheel seats 3 is hinged to the telescopic rod.

[0056] It can be understood that the power member 12 is located at the middle position between the two variable diameter wheel seats 3, and the movement direction of the telescopic rod is perpendicular to the movement direction of the two variable diameter wheels 31, that is, the movement direction of the telescopic rod is arranged parallel to the perpendicular bisector of the two variable diameter wheel seats 3.

[0057] When adjusting the variable diameter wheel 31, the power piece 12 is started, and then the telescopic rod of the power piece 12 moves. Since the two ends of the linkage rod 32 are respectively hinged to the variable diameter wheel seat 3 and the telescopic rod, the telescopic rod drives the linkage rod 32 to move, and the linkage rod 32 drives the variable diameter wheel seat 3 to move, so that the variable diameter wheel seat 3 drives the variable diameter wheel 31 to move, thereby realizing the synchronous movement of the two variable diameter wheels 31, and at the same time, the movement speed of the two variable diameter wheels 31 is the same, thereby realizing precise adjustment of the variable diameter wheel 31, and avoiding the need to set up two power pieces 12, thereby reducing the production cost of the raw material support device.

[0058] The present application does not specifically limit the connection method between the linkage rod 32 and the telescopic rod. Figure 1 , Figure 2 and Figure 3 The lifting seat 1 is slidably connected to the connecting seat 13 in the vertical direction, the telescopic rod is connected to the connecting seat 13 to drive the connecting seat 13 to move in the vertical direction, and one end of the two linkage rods 32 away from the variable diameter wheel seat 3 is hinged to the connecting seat 13.

[0059] When the power member 12 is working, the telescopic rod of the power member 12 moves, and the telescopic rod drives the connecting seat 13 to move, so that the connecting seat 13 and the lifting seat 1 slide relative to each other. Since the linkage rod 32 is hinged to the connecting seat 13, the connecting seat 13 drives the two linkage rods 32 to move, so that the two linkage rods 32 drive the two variable diameter wheel seats 3 to move toward or away from each other. By setting the connecting seat 13, the situation where the linkage rod 32 is directly connected to the telescopic rod is avoided, and it is more convenient to layout the power member 12 and the linkage rod 32, so as to greatly reduce the volume of the raw material support device and increase the connection stability between the linkage rod 32 and the telescopic rod.

[0060] Further, refer to Figure 1 , Figure 2 and Figure 3 The lifting seat 1 is provided with a guide rail 14, and the connecting seat 13 is provided with a slider 131 slidably connected to the guide rail 14, so that when the power member 12 drives the connecting seat 13 to move, the connecting seat 13 drives the slider 131 to move, and then the slider 131 and the guide rail 14 slide relative to each other, so that the sliding cooperation between the slider 131 and the guide rail 14 guides the movement direction of the connecting seat 13, so as to increase the stability of the movement of the connecting seat 13, thereby ensuring the adjustment effect of the variable diameter wheel 31.

[0061] In other implementation examples, the connection seat 13 may be omitted, that is, the end of the linkage rod 32 away from the variable-diameter wheel seat 3 is directly hinged to the telescopic rod.

[0062] Further, see Figure 1 , Figure 2 and Figure 3, the lifting seat 1 is provided with a mounting bracket 15, the power member 12 is arranged on the mounting bracket 15, and the mounting bracket 15 is provided with an avoidance space that forms an avoidance with the connecting seat 13 and the linkage rod 32.

[0063] Since the power member 12 is arranged on the mounting bracket 15, the connection stability between the power member 12 and the lifting seat 1 is increased. At the same time, the mounting bracket 15 is provided with an avoidance space that forms an avoidance with the connecting seat 13 and the linkage rod 32, thus ensuring the normal movement of the connecting seat 13 and the linkage rod 32 to ensure the adjustment range of the variable-diameter wheel 31. In addition, the structural layout of the raw material support device is made more reasonable to reduce the volume of the raw material support device.

[0064] Preferably, the mounting bracket 15 is C-shaped so that an avoidance space is formed inside the mounting bracket 15.

[0065] In other embodiments, the setting of the power member 12 can also be cancelled, and at the same time, a locking rod is threadedly connected to the variable-diameter wheel seat 3 to lock the movement of the variable-diameter wheel seat 3. That is to say, it is necessary to manually adjust the variable-diameter wheel seat 3 to reduce the production cost of the raw material support device.

[0066] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the raw material support device further includes a fixed seat 4, the fixed seat 4 is fixedly connected to the machine tool of the laser pipe cutting machine, and the driving member 2 is arranged on the fixed seat 4 and acts on the lifting seat 1.

[0067] When the raw material support device needs to be lifted, the driving member 2 is started, the fixed seat 4 supports the driving member 2, and then the driving member 2 drives the lifting seat 1. The lifting seat 1 moves in the vertical direction so that the lifting seat 1 drives the variable-diameter wheel 31 to move in the vertical direction, thereby realizing the adjustment of the variable-diameter wheel 31 in the vertical direction. At the same time, the setting of the fixed seat 4 also realizes the connection between the raw material support device and the machine tool of the laser pipe cutting machine, increasing the connection stability between the raw material support device and the machine tool of the laser pipe cutting machine.

[0068] Furthermore, referring to Figure 1 , Figure 2 and Figure 3 , the lifting seat 1 is provided with a slide rail 16, and the fixed seat 4 is provided with a sliding block 41 that is slidably connected to the slide rail 16. When the driving member 2 drives the lifting seat 1, the lifting seat 1 drives the slide rail 16 to move, and then the slide rail 16 and the sliding block 41 slide relative to each other, so that the sliding cooperation between the slide rail 16 and the sliding block 41 guides the movement of the lifting seat 1, thereby increasing the stability of the lifting seat 1 during movement. At the same time, the sliding cooperation between the slide rail 16 and the sliding block 41 can also increase the connection stability between the lifting seat 1 and the fixed seat 4 to ensure the axial left and right side limiting effects of the variable-diameter wheel 31 on the pipe fitting.

[0069] The present application does not specifically limit the structure of the driving member 2. Preferably, the driving member 2 is any one of a cylinder, a hydraulic cylinder or an electric push rod. In this embodiment, the driving member 2 is a cylinder for expansion. The cylinder block of the cylinder is connected to the fixed seat 4, and the piston rod of the cylinder is connected to the lifting seat 1 to drive the lifting seat 1 to slide in the vertical direction. In other embodiments, the driving member 2 can also be a driving structure composed of a motor and a transmission structure.

[0070] In a preferred embodiment, referring to Figure 1 、 Figure 2 and Figure 3 , each variable diameter wheel 31 is rotatably connected to the corresponding variable diameter wheel seat 3. Each variable diameter wheel seat 3 is provided with a dial 33 located at the top of the variable diameter wheel 31. Each variable diameter wheel 31 is provided with a pin shaft that can pass through the corresponding variable diameter wheel seat 3 to lock the variable diameter wheel 31.

[0071] Since the variable diameter wheel seat 3 is provided with a dial 33, it is then possible to achieve the effect of facilitating the adjustment of the variable diameter wheel 31 to ensure the limiting effect of the variable diameter wheel 31 on the left and right sides of the axial direction of the pipe fitting; since each variable diameter wheel 31 is provided with a pin shaft that can pass through the variable diameter wheel seat 3, the pin shaft can then lock the variable diameter wheel 31 to avoid the situation where the variable diameter wheel 31 may rotate relative to the variable diameter wheel seat 3 when the variable diameter wheel 31 limits the left and right sides of the axial direction of the pipe fitting, thereby ensuring the limiting effect of the variable diameter wheel 31 on the left and right sides of the axial direction of the pipe fitting and ensuring the cutting accuracy of the pipe fitting.

[0072] What is not described in the present application can be realized by adopting or referring to the existing technology.

[0073] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0074] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A raw material support device for a laser pipe cutting machine, characterized in that, It includes a lifting seat (1), a driving member (2) for driving the lifting seat (1) to move in the vertical direction, and two variable-diameter wheel seats (3) provided on the lifting seat (1). The two variable-diameter wheel seats (3) are arranged oppositely, and a variable-diameter wheel (31) is provided on each variable-diameter wheel seat (3). A limiting space is formed between the two variable-diameter wheels (31). The two variable-diameter wheel seats (3) can move in directions close to or away from each other, so that the width of the limiting space can change.

2. The raw material support device for a laser tube cutting machine according to claim 1, characterized in that, The lifting seat (1) is provided with a guide rod (11), and the two variable-diameter wheel seats (3) are both slidably connected to the guide rod (11).

3. The raw material support device for a laser pipe cutting machine according to claim 1, characterized in that, The lifting seat (1) is further provided with a power member (12), and the power member (12) is connected to the two variable-diameter wheel seats (3) to drive the two variable-diameter wheel seats (3) to move in directions close to or away from each other.

4. The raw material support device for a laser pipe cutting machine according to claim 3, characterized in that, The power member (12) has a telescopic rod. A linkage rod (32) is hinged to each of the two variable-diameter wheel seats (3). One end of each of the two linkage rods (32) far from the variable-diameter wheel seat (3) is hinged to the telescopic rod.

5. The raw material support device for a laser pipe cutting machine according to claim 4, characterized in that, The lifting seat (1) is slidably connected with a connecting seat (13) in the vertical direction. The telescopic rod is connected to the connecting seat (13). One end of each of the two linkage rods (32) far from the variable-diameter wheel seat (3) is hinged to the connecting seat (13).

6. The raw material support device for a laser pipe cutting machine according to claim 5, wherein, The lifting seat (1) is provided with a guide rail (14), and the connecting seat (13) is provided with a slider (131) slidably connected to the guide rail (14).

7. The raw material support device for a laser pipe cutting machine according to claim 5, characterized in that, The lifting seat (1) is provided with a mounting bracket (15). The power member (12) is arranged on the mounting bracket (15), and the mounting bracket (15) is provided with an avoidance space for avoiding the connecting seat (13) and the linkage rod (32).

8. The raw material support device for a laser pipe cutting machine according to claim 1, characterized in that, It further includes a fixed seat (4). The fixed seat (4) is fixedly connected to the machine tool of the laser pipe cutting machine. The driving member (2) is arranged on the fixed seat (4) and acts on the lifting seat (1).

9. The raw material support device for a laser pipe cutting machine according to claim 8, characterized in that, The lifting seat (1) is provided with a slide rail (16), and the fixed seat (4) is provided with a sliding block (41) slidably connected to the slide rail (16).

10. The raw material support device for a laser pipe cutting machine according to claim 1, characterized in that, Each variable-diameter wheel (31) is rotatably connected to the corresponding variable-diameter wheel seat (3). Each variable-diameter wheel seat (3) is provided with a dial (33) located at the top of the variable-diameter wheel (31). Each variable-diameter wheel (31) is provided with a pin shaft that can penetrate through the corresponding variable-diameter wheel seat (3) to lock the variable-diameter wheel (31).

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