Plasma automatic cutting device that can achieve high-quality cutting and is easy to operate

Abstract

The invention discloses a plasma automatic cutting device that can achieve high-quality cutting and is easy to operate, including a plasma cutting gun, a base, a universal roller, an active steering gear, a driven steering gear, an active roller, a driven roller, an adjusting gear and a transmission gear, wherein a plurality of universal rollers, an active steering gear and a driven steering gear are respectively installed below the base, the active roller is fixedly installed below the active steering gear, the driven roller is fixedly installed below the driven steering gear, the adjusting gear and the transmission gear that are meshed and connected to each other are respectively installed below the base and located between the active steering gear and the driven steering gear, and the adjusting gear and the transmission gear are respectively meshed and connected with the active steering gear or the driven steering gear at the same time. The invention can achieve accurate straight line, circular, arc and other cutting with neat cutting surface, complete high-quality plasma cutting tasks with lower manpower and financial costs, and is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to an automatic plasma cutting device, in particular to an automatic plasma cutting device which can realize high-quality cutting and is easy to operate. Background Art

[0002] Plasma cutting technology is a cutting technology that uses high-energy-density plasma arcs and high-speed plasma streams to blow away the molten metal from the cutting edge, thereby forming a continuous gap. This cutting technology has the advantages of high energy density, small cutting deformation, no need for preheating before cutting, and a wide range of metal cutting. It can cut various non-ferrous metals such as stainless steel, aluminum, copper, chrysanthemum and ordinary carbon steel. At the same time, the development advantages of the plasma cutting industry are obvious: compared with gas flame cutting, plasma cutting is faster, more efficient, and better in quality; compared with laser cutting, plasma cutting has obvious advantages in cost.

[0003] At present, there are two methods of plasma cutting: one is for workers to manually cut with a handheld plasma cutting gun; the other is to install the plasma cutting gun on large two-axis, three-axis and other equipment for automatic or semi-automatic cutting.

[0004] The above two traditional plasma cutting methods have the following defects:

[0005] When manual cutting is used, the general operation method is to first mark the material to be cut by scribing, and then cut along the scribing line. The cutting speed and cutting accuracy are closely related to the operator's experience, which can easily cause uneven cutting surfaces, especially straightness and roundness cannot be well guaranteed.

[0006] When using large two-axis or three-axis equipment for cutting, the cutting trajectory and parameter programs are first written on a computer, and then the corresponding cutting is performed after debugging is completed. This places higher skill requirements on the operator and requires program writing, etc., so it requires higher costs in terms of manpower and financial resources. For applications that only require simple cutting, it will generate more auxiliary time and the cost and return are disproportionate, so it is not suitable for promotion and application. Summary of the invention

[0007] The purpose of the present invention is to provide a plasma automatic cutting device which can achieve high-quality cutting and is easy to operate in order to solve the above problems.

[0008] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0009] A plasma automatic cutting device capable of achieving high-quality cutting and easy to operate comprises a plasma cutting gun, a base, a universal roller, an active steering gear, a driven steering gear, an active roller, a driven roller, an adjusting gear and a transmission gear, wherein a plurality of the universal rollers are mounted below the base, the transverse active steering gear and the transverse driven steering gear are respectively mounted below the base and are rotatable, the active roller with a driving motor is fixedly mounted below the active steering gear, the driven roller is fixedly mounted below the driven steering gear, the active roller, the driven roller and the bottoms of the plurality of universal rollers are located on the same virtual transverse plane, the transverse adjusting gear and the transverse transmission gear are respectively mounted below the base and are rotatable, the adjusting gear and the transmission gear are meshed and connected with each other and are located between the active steering gear and the driven steering gear, the adjusting gear is meshed and connected with the active steering gear or the driven steering gear at the same time, and the transmission gear is meshed and connected with the driven steering gear or the active steering gear at the same time.

[0010] Preferably, in order to facilitate the rotational adjustment operation of the adjusting gear, an angle adjustment disk that can be laterally rotated and fixed is installed on the base at a position corresponding to the adjusting gear, and the center axis of the adjusting gear passes through the corresponding through hole on the base and is fixedly connected to the angle adjustment disk.

[0011] Preferably, in order to facilitate fixing the angle adjustment disk and the adjusting gear, a vertical locking bolt is installed on the angle adjustment disk, and the lower end of the locking bolt can be pressed against the top of the base to achieve fixation between the angle adjustment disk and the base.

[0012] Preferably, in order to achieve precise angle control of the adjusting gear, a circular dial is provided on the upper surface of the base outside the angle adjustment disk, and the outer peripheral edge of the angle adjustment disk is provided with a marking structure or marking lines corresponding to the scale lines on the dial; the dial is composed of scale lines provided on the upper surface of the base, or the dial is installed on the base.

[0013] Preferably, in order to make the rotation direction of the angle adjustment disk consistent with the actual driving direction of the cutting device, the adjustment gear is meshedly connected with the driven steering gear, and the transmission gear is meshedly connected with the active steering gear.

[0014] Preferably, in order to amplify the angle adjustment of the adjusting gear to achieve a more precise angle adjustment function, the adjusting gear has the same outer diameter and the same number of teeth as the transmission gear, the active steering gear has the same outer diameter and the same number of teeth as the driven steering gear, and the outer diameter and the number of teeth of the adjusting gear are smaller than the outer diameter and the number of teeth of the active steering gear.

[0015] Preferably, in order to facilitate installation of the plasma cutting gun and adjustment of the cutting radius of circular or arc cutting processing, the vertical plasma cutting gun is installed on the base through a cutting gun bracket.

[0016] Preferably, in order to facilitate adjustment of the distance between the lower gun head of the plasma cutting gun and the workpiece to be cut, a clamp is installed on the cutting gun bracket at one end away from the base, and the plasma cutting gun is installed on the cutting gun bracket through the clamp.

[0017] Preferably, in order to achieve stable support for the base and facilitate more stable and reliable cutting on the surface of the metal part, there are four universal rollers which are respectively installed under the four corners of the base, and the universal rollers are magnetic universal rollers with permanent magnets.

[0018] Preferably, in order to facilitate providing driving power to the driving motor of the active roller, a speed regulator box and a power supply box for providing driving power to the driving motor of the active roller are installed on the base.

[0019] The beneficial effects of the present invention are:

[0020] The present invention designs a base, a universal roller, an active steering gear, a driven steering gear, an active roller, a driven roller, an adjusting gear and a transmission gear which are connected to each other. By rotating the adjusting gear, the active steering gear and the driven steering gear can be rotated at the same speed and in the opposite direction, thereby driving the active roller and the driven roller to rotate at the same speed and in the opposite direction, and finally realizing the direction control of the movement of the base and the plasma cutting gun, and can realize accurate straight line, circle, arc and other cutting with neat cutting surface. After the adjusting gear is accurately rotated into place, the whole cutting device can automatically complete the plasma cutting task without relying on the experience of the operator, programming and other operations, and expensive equipment such as two-axis and three-axis is not required. High-quality plasma cutting tasks can be completed with lower manpower and financial costs, which has important practical significance and is suitable for popularization and application. The cutting device can realize plasma cutting of straight line cutting, inner circle cutting, outer circle cutting, fixed center cutting, inner arc cutting, outer arc cutting and other types. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to the present invention, and the figure is a top view;

[0022] Figure 2 It is a top view of the plasma automatic cutting device which can achieve high-quality cutting and is easy to operate according to the present invention;

[0023] Figure 3 This is one of the bottom views of the plasma automatic cutting device that can achieve high-quality cutting and is easy to operate according to the present invention;

[0024] Figure 4 This is a bottom view of the plasma automatic cutting device that can achieve high-quality cutting and is easy to operate according to the present invention, and Figure 3 The cutting direction is different. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 4 As shown in the figure, the plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to the present invention comprises a plasma cutting gun 1, a base 4, a universal roller 5, an active steering gear 13, a driven steering gear 16, an active roller 7, a driven roller 12, an adjusting gear 15 and a transmission gear 14, wherein a plurality of universal rollers 5 are mounted below the base 4, a transverse active steering gear 13 and a transverse driven steering gear 16 are respectively mounted below the base 4 and can rotate, an active roller 7 with a driving motor (not marked in the figure) is fixedly mounted below the active steering gear 13, and a driven roller 12 without a driving motor is fixedly mounted below the driven steering gear 16. Under the universal gear 16, the driving roller 7, the driven roller 12 and the bottom of the plurality of universal rollers 5 are in the same virtual horizontal plane, the horizontal adjustment gear 15 and the horizontal transmission gear 14 are respectively installed under the base 4 and can rotate, the adjustment gear 15 and the transmission gear 14 are meshed and connected with each other and are located between the active steering gear 13 and the driven steering gear 16, the adjustment gear 15 is meshed and connected with the active steering gear 13 or the driven steering gear 16 (the driven steering gear 16 in the figure), and the transmission gear 14 is meshed and connected with the driven steering gear 16 or the active steering gear 13 (the active steering gear 13 in the figure). The above-mentioned base 4 is a substrate in the figure, and can be of other shapes and structures as needed, as long as the corresponding functional requirements are met.

[0027] like Figure 1-Figure 4 As shown, the present invention also discloses the following multiple more optimized specific structures. In practical applications, the above structure can be superimposed and combined with one or more of the following specific structures as needed to form a more optimized technical solution.

[0028] In order to facilitate the rotation adjustment operation of the adjusting gear 15, an angle adjustment disk 9 which can be rotated laterally and fixed is installed on the base 4 at a position corresponding to the adjusting gear 15. The central axis of the adjusting gear 15 passes through the corresponding through hole on the base 4 and is fixedly connected to the angle adjustment disk 9.

[0029] In order to facilitate the fixing of the angle adjustment disk 9 and the adjusting gear 15 , a vertical locking bolt 8 is installed on the angle adjustment disk 9 , and the lower end of the locking bolt 8 can press against the top of the base 4 to fix the angle adjustment disk 9 and the base 4 .

[0030] In order to achieve precise angle control of the adjustment gear 15, a circular dial 10 (with the minimum scale of 1° or less) is provided on the upper surface of the base 4 outside the angle adjustment disk 9, and the outer peripheral edge of the angle adjustment disk 9 is provided with a marking structure corresponding to the scale lines on the dial 10 (a sharp-angle structure in the figure, and other marking structures or marking lines may also be provided); the dial 10 is composed of scale lines provided on the upper surface of the base 4, or the dial 10 is independently processed and installed on the base 4.

[0031] In order to make the rotation direction of the angle adjustment disk 9 consistent with the actual driving direction of the cutting device, the adjustment gear 15 is meshed and connected with the driven steering gear 16 , and the transmission gear 14 is meshed and connected with the active steering gear 13 .

[0032] Preferably, in order to amplify the angle adjustment of the adjusting gear 15 to achieve a more precise angle adjustment function, the adjusting gear 15 has the same outer diameter (the outer diameter in this embodiment is 20 mm) and the same number of teeth (the number of teeth in this embodiment is 25) as the transmission gear 14, the active steering gear 13 has the same outer diameter (the outer diameter in this embodiment is 80 mm) and the same number of teeth (the number of teeth in this embodiment is 100) as the driven steering gear 16, and the outer diameter and the number of teeth of the adjusting gear 15 are smaller than the outer diameter and the number of teeth of the active steering gear 13.

[0033] In order to facilitate installation of the plasma cutting gun 1 and adjustment of the cutting radius of circular or arc cutting processing, the vertical plasma cutting gun 1 is installed on the base 4 through the cutting gun bracket 3.

[0034] In order to facilitate adjustment of the distance between the lower gun head of the plasma cutting gun 1 and the workpiece to be cut, a clamp 2 is installed on the cutting gun bracket 3 at one end away from the base 4, and the plasma cutting gun 1 is installed on the cutting gun bracket 3 through the clamp 2.

[0035] In order to achieve stable support for the base 4 and facilitate more stable and reliable cutting on the surface of the metal part, there are four universal rollers 5 respectively installed under the four corners of the base 4. The universal rollers 5 are magnetic universal rollers with permanent magnets (not shown separately in the figure).

[0036] In order to facilitate the provision of driving power to the driving motor of the active roller 7, a speed regulator box 11 (used to adjust the rotation speed of the active roller 7, i.e., the cutting speed) and a power supply box 6 for providing driving power to the driving motor of the active roller 7 are installed on the base 4. The circuit in the speed regulator box 11 and the battery in the power supply box 6 and other components all adopt conventional components and structures of the prior art. The structure in which the power cord passes through the base 4 and is connected to the driving motor of the active roller 7 can also be easily realized by adopting a conventional adaptive structure, which will not be repeated here.

[0037] like Figure 1-Figure 4 As shown, when in use, the cutting device is first placed on a workpiece to be cut, such as a metal plate, and the permanent magnet in the universal roller 5 is used to make the device more stably and reliably adsorbed on the workpiece, but the magnetic force is not enough to counter the driving force of the driving motor of the active roller 7, so it does not affect the driving motor of the active roller 7 to drive the device to move; then the angle adjustment disk 9 can realize the precise rotation of the adjustment gear 15, and after rotating in place, the angle adjustment disk 9 is fixed by the locking bolt 8, so the adjustment gear 15, the transmission gear 14, the active steering gear 13 and the driven steering gear 16 are all fixed and cannot rotate, and the directions of the active roller 7 and the driven roller 12 are fixed; then the driving motor of the active roller 7 is started and the plasma cutting gun 1 is turned on, the active roller 7 rotates, and the driven roller 12 and the four universal rollers 5 rotate with it, driving the base 4 and the plasma cutting gun 1 to move synchronously, completing the plasma cutting task of the workpiece to be cut, and the direction of movement is determined by the direction determined by the active roller 7 and the driven roller 12. Specifically, if the driving roller 7 and the driven roller 12 are in the same direction and are located on the same straight line, the base 4 and the plasma cutting gun 1 move in a straight line to achieve straight line cutting; if the driving roller 7 and the driven roller 12 are in different directions and the center of the arc formed is on the side away from the plasma cutting gun 1, the base 4 and the plasma cutting gun 1 move in an outer circle or an outer arc to achieve outer circle or outer arc cutting. Figure 3 If the driving roller 7 and the driven roller 12 are in different directions and the center of the arc formed is on the side close to the plasma cutting gun 1, the base 4 and the plasma cutting gun 1 move inwardly or inwardly to achieve inner circle or inner arc cutting, see Figure 4 As shown; if the driving roller 7 and the driven roller 12 are in the same direction and parallel to each other (not in a straight line), the base 4 and the plasma cutting gun 1 move in a circle in situ to achieve fixed-center cutting.

[0038] The relationship between the rotation angle of the angle adjustment disk 9 and the cutting radius (or cutting diameter) is described in more detail below by taking an example.

[0039] like Figure 1-Figure 4As shown, when the outer diameter of the adjusting gear 15 and the transmission gear 14 is 20 mm and the number of teeth is 25, and the outer diameter of the active steering gear 13 and the driven steering gear 16 is 80 mm and the number of teeth is 100, assuming that the rotation angle of the angle adjustment plate 9 is +a degree (+ represents clockwise or counterclockwise rotation), the rotation angle of the adjusting gear 15 is +a degree, the rotation angle of the transmission gear 14 is -a degree (- represents counterclockwise or clockwise rotation), the rotation angle of the driven steering gear 16 is -a / 4 degree, and the rotation angle of the active steering gear 13 is +a / 4 degree, that is, the rotation angle of the active roller 7 is +a / 4 degree, and the rotation angle of the driven roller 12 is -a / 4 degree.

[0040] Without considering the direction of rotation, the rotation angle A of the angle adjustment disk 9 and the cutting diameter d satisfy the following formula: A=4arctan[100 / (d / 2-L)], wherein 0≤A≤360, and L is the distance between the line connecting the center point of the active roller 7 and the center point of the driven roller 12 and the central axis of the plasma cutting gun 1; when A=0, the cutting device moves in a straight line, and the plasma cutting gun 1 can achieve straight-line cutting; when A=360, the active roller 7 and the driven roller 12 both rotate 90 degrees, the cutting device rotates in place, and the plasma cutting gun 1 can achieve fixed-center cutting; when 0<A<360, the cutting device moves in a circle or an arc shape, and the plasma cutting gun 1 can achieve a circle or an arc shape. The cutting diameter d and the corresponding rotation angle A can be calculated using the above formula, and the inner circle or outer circle is determined by the rotation direction of the angle adjustment disk 9.

[0041] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A plasma automatic cutting device capable of achieving high-quality cutting and easy to operate, comprising a plasma cutting gun, characterized in that: It also includes a base, a universal roller, an active steering gear, a driven steering gear, a driving roller, a driven roller, an adjusting gear and a transmission gear, wherein a plurality of the universal rollers are mounted below the base, the transverse active steering gear and the transverse driven steering gear are respectively mounted below the base and can rotate, the active roller with a driving motor is fixedly mounted below the active steering gear, the driven roller is fixedly mounted below the driven steering gear, the active roller, the driven roller and the bottom of the plurality of universal rollers are in the same virtual transverse plane, the transverse adjusting gear and the transverse transmission gear are respectively mounted below the base and can rotate, the adjusting gear The section gear and the transmission gear are meshed and connected with each other and are located between the active steering gear and the driven steering gear. The adjusting gear is meshed and connected with the active steering gear or the driven steering gear at the same time, and the transmission gear is meshed and connected with the driven steering gear or the active steering gear at the same time; an angle adjustment disk that can rotate laterally and can be fixed is installed on the top of the base at a position corresponding to the adjusting gear, and the central axis of the adjusting gear passes through the corresponding through hole on the base and is fixedly connected with the angle adjustment disk; a vertical locking bolt is installed on the angle adjustment disk, and the lower end of the locking bolt can press against the top of the base to achieve the fixation between the angle adjustment disk and the base.

2. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 1 is characterized in that: A circular dial is provided on the upper surface of the base at a position outside the angle adjustment disk, and the outer peripheral edge of the angle adjustment disk is provided with a marking structure or marking lines corresponding to the scale lines on the dial; the dial is composed of scale lines arranged on the upper surface of the base, or the dial is installed on the base.

3. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 1 is characterized in that: The adjusting gear is meshedly connected with the driven steering gear, and the transmission gear is meshedly connected with the active steering gear.

4. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 1 is characterized in that: The adjusting gear has the same outer diameter and the same number of teeth as the transmission gear, the active steering gear has the same outer diameter and the same number of teeth as the driven steering gear, and the outer diameter and the number of teeth of the adjusting gear are smaller than those of the active steering gear.

5. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 1 is characterized in that: The vertical plasma cutting gun is mounted on the base through a cutting gun bracket.

6. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 5 is characterized in that: A clamp is installed on one end of the cutting gun bracket away from the base, and the plasma cutting gun is installed on the cutting gun bracket through the clamp.

7. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 1 is characterized in that: There are four universal rollers which are respectively installed under the four corners of the base, and the universal rollers are magnetic universal rollers with permanent magnets.

8. The plasma automatic cutting device capable of achieving high-quality cutting and easy to operate according to claim 1 is characterized in that: A speed regulator box and a power supply box for providing driving power to the driving motor of the active roller are installed on the base.

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