Cutting head focusing device and cutting device

Abstract

The cutting head focusing device comprises a shell, at least one pneumatic supporting rod, an elastic component, an adjusting block, a connecting piece and a rolling wheel, the number of the pneumatic supporting rods is at least one, the pneumatic supporting rods are fixedly connected with the shell, and the output ends of the pneumatic supporting rods extend in the direction away from the bottom wall of the shell; at least one elastic component is arranged; the adjusting block is arranged on the upper portion of the output end of each pneumatic supporting rod, and each pneumatic supporting rod can provide upward supporting for the adjusting block. The elastic parts are arranged between the adjusting block and the bottom wall of the shell, and the two ends of each elastic part can abut against the adjusting block and the bottom wall of the shell respectively; one end of the connecting piece is fixedly connected with the adjusting block, and the connecting piece is used for being fixedly connected with the cutting head. The roller is connected with the other end of the connecting piece. The focal length of the cutting head can be kept unchanged, and follow-up adjustment of the focal length and curved surface fluctuation during curved surface machining is achieved; and the automatic focusing requirement in a high-radiation and high-magnetic environment can be better met.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, and in particular to a cutting head focusing device and a cutting device. Background Art

[0002] Cutting devices include water jet cutting machines, flame cutting machines, plasma cutting machines and laser cutting machines. Among them, laser cutting is a non-contact cutting method with the advantages of narrow cutting kerf, small heat-affected zone, large cutting depth-to-width ratio, and the ability to cut various complex plane and three-dimensional workpieces. It can be used for rapid cutting of composite materials, high-hardness and brittle metals, non-metals, ceramic materials, carbon fiber reinforced polymers and other materials, and is widely used.

[0003] The decommissioning of nuclear facilities is a time-consuming and complex task, and laser cutting can provide a non-contact disassembly process that can cut most materials and complex geometries, produce less secondary emissions, and has high flexibility, which can meet the processing requirements of most nuclear facility decommissioning.

[0004] When processing curved surfaces, the height of the existing laser cutting head cannot be automatically adjusted according to the shape of the curved surface, resulting in changes in the laser focus during the cutting process, affecting the effect of laser cutting. In addition, in the service environment of the nuclear industry, there are a large number of radioactive elements. In this high-radiation and high-magnetic environment, most electronic equipment such as sensors and controllers are difficult to achieve normal operation. Therefore, how to enable the cutting head to automatically rise and fall and focus with the ups and downs of the processing surface and meet the service requirements of the high-radiation and high-magnetic environment is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to provide a cutting head focusing device and a cutting device to solve the problems existing in the above-mentioned prior art, which can ensure that the focal length of the cutting head remains unchanged and realize the follow-up adjustment of the focal length and the surface undulation during curved surface processing; and can better meet the automatic focusing requirements in high radiation and high magnetic environments.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a cutting head focusing device, comprising a housing, a pneumatic support rod, an elastic component, an adjustment block, a connecting piece and a roller, wherein:

[0008] There is at least one pneumatic support rod, each of which is fixedly connected to the shell, and the output end of each of the pneumatic support rods extends in a direction away from the bottom wall of the shell;

[0009] There is at least one elastic component;

[0010] The regulating block is arranged on the upper part of the output end of each of the pneumatic support rods, and each of the pneumatic support rods can provide upward support for the regulating block; each of the elastic components is arranged between the regulating block and the bottom wall of the shell, and the two ends of each of the elastic components can respectively abut against the regulating block and the bottom wall of the shell;

[0011] One end of the connecting piece is fixedly connected to the adjusting block, and the connecting piece is used to be fixedly connected to the cutting head;

[0012] The roller is connected to the other end of the connecting member.

[0013] Preferably, it further comprises a lifting drive device, which can be connected to the connecting member, and the lifting drive device can drive the connecting member and the roller to move along an axial direction parallel to the pneumatic support rod.

[0014] Preferably, the lifting drive device includes a worm gear and a connecting rod, one end of the connecting rod is fixedly connected to the connecting piece, the other end of the connecting rod is connected to the roller, the worm gear is meshingly connected to the connecting rod, and the axis of the connecting rod is parallel to the axis of each pneumatic support rod.

[0015] Preferably, it further includes at least one guide rod, wherein the guide rods correspond to the elastic components one by one, both ends of each guide rod are fixedly connected to the shell, each elastic component is sleeved outside one of the guide rods, and each guide rod is slidably connected to the adjustment block.

[0016] Preferably, it also includes a guide plate, which is fixedly connected to the lower end of the shell, and the side of the connecting member away from the shell is used for fixed connection with the cutting head, and the guide plate is arranged on the other side of the connecting member. The guide plate can guide the connecting member and / or the connecting rod by contacting with the connecting member and / or the connecting rod.

[0017] Preferably, the center line of each guide rod is parallel to the axis of each pneumatic support rod.

[0018] Preferably, each of the elastic components is a spring.

[0019] Preferably, the worm gear is connected to the guide plate.

[0020] The present invention also provides a cutting device, comprising the cutting head and the cutting head focusing device, characterized in that the cutting head is fixedly connected to the connecting piece.

[0021] Preferably, the cutting head is a laser cutting head.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] The present invention provides a cutting head focusing device and a cutting device, comprising a shell, a pneumatic support rod, an elastic component, an adjustment block, a connecting piece and a roller, wherein: there is at least one pneumatic support rod, each pneumatic support rod is fixedly connected to the shell, and the output end of each pneumatic support rod extends in a direction away from the bottom wall of the shell; there is at least one elastic component; the adjustment block is arranged on the upper part of the output end of each pneumatic support rod, and each pneumatic support rod can provide upward support for the adjustment block; each elastic component is arranged between the adjustment block and the bottom wall of the shell, and the two ends of each elastic component can respectively abut against the adjustment block and the bottom wall of the shell; one end of the connecting piece is fixedly connected to the adjustment block, and the connecting piece is used to be fixedly connected to the cutting head; the roller is connected to the other end of the connecting piece.

[0024] By driving the housing to move along the processing direction, the roller rolls on the working surface, thereby driving the cutting head to move and realize cutting. In the natural state, the pneumatic support rod, the elastic component and the surface to be processed jointly provide support for the cutting head, and the elastic component and the pneumatic support rod are in a compressed state; when processing the curved surface, the roller can always be in contact with the working surface under the action of gravity of the connecting piece, the cutting head, etc. When the working surface is a curved surface, the roller can move up and down along the curved surface, thereby causing the adjustment block, the connecting piece and the cutting head to move up and down, causing the cutting head to move up and down with the ups and downs of the curved surface, so that the distance between the cutting head and each part of the curved surface does not change or changes slightly, that is, the focal length of the cutting head is guaranteed to remain unchanged or change slightly, and the follow-up function of the cutting head for curved surface processing is realized. The elastic component and the pneumatic support rod can realize the damped operation of the cutting head follow-up, ensuring the smooth operation of the mechanism. Specifically: when the roller rises and falls with the working surface, the compression of the elastic component and the pneumatic support rod is reduced or the elastic component and the pneumatic support rod are further compressed, which plays a buffering and shock-absorbing role. The pneumatic support rod is used to provide the main support for the connector and cutting head, and its shock absorption performance may be affected by environmental factors such as temperature and air pressure, while the elastic component has relatively stable performance and can complement the shock absorption of the pneumatic support rod. The combination of the two can make the mechanism run more smoothly. At the same time, the elastic component and the pneumatic support rod are mechanical components, and their working performance is not affected by radiation and magnetic fields, which can better meet the requirements of automatic focusing in high-radiation and high-magnetic environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A front view of the cutting head focusing device provided in Example 1;

[0027] Figure 2 for Figure 1 Bottom view of

[0028] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0029] Figure 4 A schematic diagram of the structure of a cutting device provided in Example 2;

[0030] In the figure: 100, cutting head focusing device; 200, cutting device; 1, housing; 2, pneumatic support rod; 3, elastic component; 4, adjustment block; 5, connecting piece; 6, roller; 7, worm gear; 8, connecting rod; 9, guide rod; 10, guide plate; 11, cutting head. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The purpose of the present invention is to provide a cutting head focusing device and a cutting device to solve the problems existing in the above-mentioned prior art, which can ensure that the focal length of the cutting head remains unchanged and realize the follow-up adjustment of the focal length and the surface undulation during curved surface processing; and can better meet the automatic focusing requirements in high radiation and high magnetic environments.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] like Figures 1 to 3 As shown, the present invention provides a cutting head focusing device 100, comprising a shell 1, a pneumatic support rod 2, an elastic component 3, an adjustment block 4, a connecting piece 5 and a roller 6, wherein: there is at least one pneumatic support rod 2, each pneumatic support rod 2 is fixedly connected to the shell 1, and the output end of each pneumatic support rod 2 extends in a direction away from the bottom wall of the shell 1; there is at least one elastic component 3; the adjustment block 4 is arranged on the upper part of the output end of each pneumatic support rod 2, and each pneumatic support rod 2 can provide upward support for the adjustment block 4; each elastic component 3 is arranged between the adjustment block 4 and the bottom wall of the shell 1, and the two ends of each elastic component 3 can respectively abut against the adjustment block 4 and the bottom wall of the shell 1; one end of the connecting piece 5 is fixedly connected to the adjustment block 4, and the connecting piece 5 is used to be fixedly connected to the cutting head 11; the roller 6 is connected to the other end of the connecting piece 5.

[0036] By driving the housing 1 to move along the processing direction, the roller 6 rolls on the working surface, thereby driving the cutting head 11 to move and achieve cutting. In a natural state, the pneumatic support rod 2, the elastic component 3 and the surface to be processed jointly provide support for the cutting head 11, and the elastic component 3 and the pneumatic support rod 2 are in a compressed state; when processing a curved surface, the roller 6 can always be in contact with the working surface under the action of gravity of the connecting member 5, the cutting head 11, etc. When the working surface is a curved surface, the roller 6 can move up and down along the curved surface, thereby causing the adjustment block 4, the connecting member 5 and the cutting head 11 to move up and down, causing the cutting head 11 to move up and down with the ups and downs of the curved surface, so that the distance between the cutting head 11 and various parts of the curved surface does not change or changes slightly, that is, it is ensured that the focal length of the cutting head 11 remains unchanged or changes slightly, and the follow-up function of the cutting head 11 for curved surface processing is realized. The elastic component 3 and the pneumatic support rod 2 can realize the damped operation of the cutting head 11, ensuring the smooth operation of the mechanism. Specifically, when the roller 6 rises and falls with the working surface, the compression of the elastic component 3 and the pneumatic support rod 2 is reduced or the elastic component 3 and the pneumatic support rod 2 are further compressed, playing a buffering and shock-absorbing role. The pneumatic support rod 2 is used to play a major supporting role for the connector 5 and the cutting head 11, etc., and its shock-absorbing performance may be affected by environmental factors such as temperature and air pressure, while the performance of the elastic component 3 is relatively stable, which can complement the shock absorption of the pneumatic support rod 2. The cooperation of the two can make the mechanism run more smoothly. At the same time, the elastic component 3 and the pneumatic support rod 2 are mechanical components, and their working performance is not affected by radiation and magnetic fields, and can better meet the automatic focusing requirements of high-radiation and high-magnetic environments.

[0037] In this embodiment, a lifting drive device is also included, which can be connected to the connecting member 5, and can drive the connecting member 5 and the roller 6 to move in a direction parallel to the axis of the pneumatic support rod 2. Since the roller 6 is closely attached to the working surface during the working process, before processing, the height of the connecting member 5 and the roller 6 can be adjusted by the lifting drive device, so that the distance between the cutting head 11 and the working surface can be adjusted, and the distance between the laser focus and the working surface can be changed, thereby realizing the function of mechanical focusing.

[0038] In this embodiment, the lifting drive device includes a worm gear 7 and a connecting rod 8, one end of the connecting rod 8 is fixedly connected to the connecting member 5, the other end of the connecting rod 8 is connected to the roller 6, the worm gear 7 is meshed with the connecting rod 8, and the axis of the connecting rod 8 is parallel to the axis of each pneumatic support rod 2. By rotating the worm gear 7, the connecting rod 8 can be driven to rise and fall to achieve mechanical focusing. In this embodiment, mechanical focusing is performed through the structure of the worm gear 7 and the connecting rod 8, and the accuracy is relatively high. It should be noted that an electric or manual drive device needs to be provided to drive the worm gear 7 to rotate in order to achieve mechanical focusing.

[0039] In this embodiment, at least one guide rod 9 is further included. The guide rods 9 correspond to the elastic components 3 one by one. Both ends of each guide rod 9 are fixedly connected to the housing 1. Each elastic component 3 is sleeved outside a guide rod 9. Each guide rod 9 is slidably connected to the adjustment block 4. The guide rod 9 can make the adjustment block 4 move in a directional manner along the center line direction of the guide rod 9, which is beneficial to ensure the focusing accuracy; the guide rod 9 can also balance the lateral torque (torque perpendicular to the center line direction of the guide rod 9), reduce or avoid the influence of the lateral torque on the pneumatic support rod 2 and other structures, and prevent the pneumatic support rod 2 and other structures from being damaged by the lateral torque. As a preferred embodiment, there are preferably two guide rods 9, and the two guide rods 9 are arranged at both ends of the adjustment block 4.

[0040] In this embodiment, a guide plate 10 is further included, and the guide plate 10 is fixedly connected to the lower end of the housing 1. The side of the connecting member 5 away from the housing 1 is used for fixed connection with the cutting head 11. The guide plate 10 is arranged on the other side of the connecting member 5, and the guide plate 10 can guide the connecting member 5 and the connecting rod 8 by contacting with the connecting member 5 and the connecting rod 8. The guide plate 10 can provide position limiting and guidance for the surface of the connecting member 5 close to the guide plate 10 and the surface of the connecting rod 8 close to the guide plate 10, so as to reduce the rigid deformation of the connecting member 5 and the connecting rod 8 in the lateral direction (perpendicular to the lifting direction) due to stress concentration under the deadweight of the cutting head 11.

[0041] In this embodiment, the center line of each guide rod 9 and the axis of each pneumatic support rod 2 are parallel to each other.

[0042] In this embodiment, each elastic component 3 is a spring.

[0043] In this embodiment, the worm gear 7 is connected to the guide plate 10, and the connecting rod 8 is provided with meshing teeth on one side perpendicular to its center line. The worm gear 7 is arranged on the side of the connecting rod 8 provided with the meshing teeth and meshingly connected with the meshing teeth to realize meshing transmission.

[0044] As a preferred embodiment, the cutting head 11, the connecting member 5, and the adjusting block 4 are fixedly connected by bolts and nuts.

[0045] As a preferred embodiment, the pneumatic support rod 2, the elastic component 3, the guide rod 9, and the adjustment block 4 are all arranged inside the shell 1. The shell 1 can protect the pneumatic support rod 2, the elastic component 3, the guide rod 9, and the adjustment block 4 to a certain extent, which is beneficial to extending the service life of the device.

[0046] As a preferred implementation, under the premise of ensuring normal operation, the distance between the roller 6 and the cutting head 11 is made as small as possible, so as to improve the focusing accuracy of the cutting head 11.

[0047] Example 2

[0048] like Figure 4 As shown, this embodiment provides a cutting device 200, including a cutting head 11 and a cutting head focusing device 100 of any one of Embodiment 1, and the cutting head 11 is fixedly connected to the connecting member 5.

[0049] In this embodiment, the cutting head 11 is a laser cutting head 11 .

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cutting head focusing device, characterized in that: It includes a housing, a pneumatic support rod, an elastic component, an adjustment block, a connecting piece and a roller, wherein: There is at least one pneumatic support rod, each of which is fixedly connected to the shell, and the output end of each of the pneumatic support rods extends in a direction away from the bottom wall of the shell; There is at least one elastic component; The regulating block is arranged on the upper part of the output end of each of the pneumatic support rods, and each of the pneumatic support rods can provide upward support for the regulating block; each of the elastic components is arranged between the regulating block and the bottom wall of the shell, and the two ends of each of the elastic components can respectively abut against the regulating block and the bottom wall of the shell; One end of the connecting piece is fixedly connected to the adjusting block, and the connecting piece is used to be fixedly connected to the cutting head; The roller is connected to the other end of the connecting member.

2. The cutting head focusing device according to claim 1, characterized in that: It also includes a lifting drive device, which can be connected to the connecting member and can drive the connecting member and the roller to move along an axial direction parallel to the pneumatic support rod.

3. The cutting head focusing device according to claim 2, characterized in that: The lifting drive device includes a worm gear and a connecting rod, one end of the connecting rod is fixedly connected to the connecting piece, the other end of the connecting rod is connected to the roller, the worm gear is meshedly connected to the connecting rod, and the axis of the connecting rod is parallel to the axis of each pneumatic support rod.

4. The cutting head focusing device according to claim 1, characterized in that: It also includes at least one guide rod, which corresponds to the elastic component one by one. Both ends of each guide rod are fixedly connected to the shell. Each elastic component is sleeved outside one of the guide rods, and each guide rod is slidably connected to the adjustment block.

5. The cutting head focusing device according to claim 3, characterized in that: It also includes a guide plate, which is fixedly connected to the lower end of the shell, and the side of the connecting member away from the shell is used to be fixedly connected to the cutting head, and the guide plate is arranged on the other side of the connecting member. The guide plate can guide the connecting member and / or the connecting rod by contacting with the connecting member and / or the connecting rod.

6. The cutting head focusing device according to claim 4, characterized in that: The center line of each guide rod is parallel to the axis of each pneumatic support rod.

7. The cutting head focusing device according to claim 1, characterized in that: Each of the elastic components is a spring.

8. The cutting head focusing device according to claim 5, characterized in that: The worm gear is connected to the guide plate.

9. A cutting device, comprising the cutting head and the cutting head focusing device according to any one of claims 1 to 8, characterized in that: The cutting head is fixedly connected to the connecting piece.

10. The cutting device according to claim 9, characterized in that: The cutting head is a laser cutting head.

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