TWI765826B - Plasma cutting device - Google Patents

Abstract

A plasma cutting device, comprising a gun body extending along an axis, a metal base connected with the gun body at one end, a collar connected with the gun body, a spray head connected with the collar at one end, and a nozzle for fixing the spray head and The outer sheath of the collar. The gun body includes a shaft, a distribution ring extending along the axis, and an alignment member located outside the distribution ring. The distribution ring has a surrounding wall and a plurality of joints formed on the inner side of the surrounding wall. The collar includes a penetrating piece having a butt joint engaging with any joint portion, and an abutting piece abutting against the end edge of the distribution ring and having a position corresponding to the marking portion. The spray head includes a terminal piece having a corresponding portion matched with the marking portion, and a conical piece extending radially from the terminal piece, the conical piece having an oblique opening corresponding to the corresponding portion.

Description

Plasma cutting device

The present invention relates to a mechanical processing device, in particular to a plasma cutting device.

Referring to FIG. 1, it is an existing oblique plasma cutting device 1, comprising a gun body 11, a copper base 12 connected to the gun body 11 and having an electrode 121 away from the gun body 11, and a set of the copper base 12 a gas distribution ring 13 fixed to the gun body 11, a nozzle seat 14 abutting on the gas distribution ring 13 and surrounding a chamber 140, and a nozzle seat 14 locked on the gun body 11 for positioning the nozzle seat 14 of the insulating sheath 15. The electrode 121 is located in the chamber 140, and the nozzle holder 14 includes an extension section 141 extending in the axial direction away from the gas distribution ring 13, and an extension section 141 radially tapering from the extension section 141 along the Axially extending reduced diameter section 142 . The diameter-reduced section 142 has an end surface 148 at the end, and an oblique cut 149 which is spaced from the end surface 148 and communicated between the cavity 140 and the outside. When the input gas enters the chamber 140 through the gas distribution ring 13 , the electrode 121 can apply high electrical energy to the gas, thereby generating a plasma arc and outputting from the bevel 149 to cut the workpiece.

The reason why the oblique cut 149 is formed in the reduced diameter section 142 of the nozzle holder 14 is mainly due to the special use environment, by allowing the plasma arc to be output at an angle slightly deviated from the axial direction of the gun body 11 , It is easier to reach into a small working space and perform cutting processing for indented angles or narrower areas. However, compared to directly outputting the plasma arc from the end face 148 to determine the output of the plasma arc along the axis, it is more difficult to confirm the actual orientation of the oblique cut 149 slightly deviated from the axis. If the position of the oblique cut 149 is known, of course, the output plasma arc cannot be accurately output to the target, which is not only inconvenient in use, but also prone to deviations in processing accuracy.

Therefore, the purpose of the present invention is to provide a plasma cutting device that is easy to align the oblique plasma output position, thereby optimizing the machining accuracy.

Therefore, the plasma cutting device of the present invention includes a gun body extending along an axis, a metal base connected to the gun body at one end, a collar connected to the gun body and sleeved on the periphery of the metal base, and an end connected to the metal base. The sprinkler head of the collar, and an outer sheath connected to the gun body and surrounding the sprinkler head, thereby fixing the sprinkler head and the collar along the direction parallel to the axis.

The gun body includes a shaft with one end face, a distribution ring extending from the end face of the shaft along the axis, and an alignment piece formed on the end face and located radially outside the distribution ring. The distribution ring has a surrounding wall surrounding the axis, and a plurality of joints formed on the inner side of the surrounding wall.

The metal base includes an electrode arranged at the end and used for providing electrical energy.

The collar includes a piercing piece having a butt joint for engaging with any of the joint parts, and an end edge connected to the piercing piece and abutting against the distributing ring, and having a position pair It should be aligned with the abutment part of the marking part of the part.

The showerhead includes a termination piece having a corresponding portion whose shape matches the marking portion, and a conical piece extending radially tapered from the termination piece to surround the electrode of the metal seat. The conical piece has an oblique opening which is penetrating in a direction deviating from the axis and whose position corresponds to the corresponding portion.

The effect of the present invention is that due to the alignment piece of the gun body, the marking portion of the abutting piece of the collar, the corresponding portion of the end piece of the spray head, until the conical piece of the spray head is The positions of the oblique openings correspond to each other and can be referred to each other, so not only are they easy to align during assembly, but also the exact position of the oblique openings on the same straight line can be known from the alignment piece of the gun body during use. , under the condition that the plasma arc output can be accurately grasped, the purpose of optimizing the machining accuracy can be achieved.

Referring to FIG. 2 and FIG. 3 , it is an embodiment of the plasma cutting device of the present invention. This embodiment includes a gun body 2 extending along an axis L, a metal base 3 connected to the gun body 2 at one end, and a metal base 3 connected to the gun body 2 . The gun body 2 is sleeved with a collar 4 on the periphery of the metal base 3, a nozzle 5 connected to the collar 4 at one end, and a nozzle 5 connected to the gun body 1 and surrounding the nozzle 5, so as to be parallel to the axis L. The direction fixes the spray head 5 and the outer sheath 6 of the collar 4 . Specifically, the gun body 2 of this embodiment is connected to a gas source and a power source for supplying working gas, so that the working gas can be excited into a plasma state in the shower head 5 due to high electrical energy, and output to the outside for supplying Perform cutting related operations. Since the problem to be solved by this embodiment is not to improve the overall operation mechanism, the technical details related to the operation principle will not be repeated in the following, as long as a specific type of working gas can be excited by high electric energy.

The gun body 2 includes a shaft 21 having an end face 211 at the distal end, a distribution ring 22 extending from the end face 211 of the shaft 21 along the axis L and suitable for guiding working gas, and a distribution ring 22 formed in the The end face 211 and the alignment piece 23 on the radially outer side of the distribution ring 22 . The distribution ring 22 has a surrounding wall 221 surrounding the axis L, and a plurality of joints 222 formed inside the surrounding wall 221 . In this embodiment, each joint portion 222 is a wire groove extending parallel to the axis L. As shown in FIG. Wherein, the alignment member 23 is not substantially a necessary connection structure for the mutual assembly of the components. In this embodiment, it is a rod that can expand and contract relative to the end surface 211. The location can be clearly identified by the appearance, and is not limited to the above-mentioned types.

The metal seat 3 includes an electrode 31 disposed at the end and used to provide electrical energy. Specifically, the material of the metal seat 3 is preferably red copper, so as to optimize the excitation with high electrical energy due to better electrical and thermal conductivity properties The basic performance of the plasma arc is generated by the working gas, and a good heat dissipation effect is formed.

The collar 4 includes a through piece 41 having a butt portion 411 for engaging with any of the joint portions 222 , and an end edge connected to the through piece 41 and abutting against the distribution ring 22 , and has an abutting member 42 whose position corresponds to the marking portion 421 of the aligning member 23 . Wherein, since the abutting portion 411 is to be correspondingly connected to any of the connecting portions 222, the abutting portion 411 is a convex block that can slide in the wire groove, and the marking portion 421 is a concave portion. A groove on the outer edge.

The shower head 5 includes a terminal piece 51 abutting against the collar 4 , and a conical piece 52 extending radially tapered from the terminal piece 51 to surround the electrode 31 of the metal base 3 . The terminal piece 51 has a corresponding portion 511 whose shape matches the marking portion 421 , and a plurality of air holes 512 penetrating in a direction perpendicular to the axis L. As shown in FIG. The shape of the corresponding portion 511 is opposite to that of the marking portion 421 , so it is a flange that protrudes outward and can be matched with the groove. The conical member 52 has an oblique opening 521 extending in a direction deviating from the axis L and positioned corresponding to the corresponding portion 511 . The working gas in the conical member 52 will be due to the high electrical energy provided by the electrode 31 . After being excited into a plasma state, a plasma arc that can be used for cutting is output from the oblique opening 521 in a direction deviating from the axis L.

Specifically, the outer sheath 6 is screwed with the gun body 2. During the process of making the outer sheath 6 and the gun body 2 approach each other along the axis L by the screwing mechanism, the axis can be The direction of L makes the metal seat 3 , the collar 4 , and the spray head 5 abut against each other, so that the assembly of this embodiment can be simply and efficiently completed under the condition that the components can be precisely aligned with each other.

Referring to FIG. 4 and in conjunction with FIG. 3 , the aligning member 23 of the gun body 2 , the marking portion 421 of the abutting member 42 of the collar 4 , the corresponding portion 511 of the terminating member 51 of the spray head 5 , And the projected position of the oblique opening 521 of the cone 52 of the spray head 5 in the direction perpendicular to the axis L is on the same straight line. That is to say, when the assembly of this embodiment is completed, as long as the alignment member 23 of the gun body 2 is visually observed from the outside, it can be determined that the oblique opening 521 is located in the extending direction parallel to the axis L, so it can be Thereby, the exact position of the output plasma arc can be known.

Referring to FIG. 5 and in conjunction with FIG. 3 , when using this embodiment to perform the cutting operation, even if the nozzle 5 is penetrated into a relatively narrow working space as shown in FIG. The alignment piece 23 on the gun body 2 uses the characteristic that the alignment piece 23 and the oblique opening 521 are on the same extension line to accurately determine the correct position of the oblique opening 521, and thereby control the output for cutting it. The direction of the plasma arc can accurately complete the cutting operation.

To sum up, in this embodiment of the plasma cutting device of the present invention, the aligning member 23 of the gun body 2 , the marking portion 421 of the abutting member 42 of the collar 4 , and the end connection of the nozzle 5 The corresponding part 511 of the part 51 and the oblique opening 521 of the conical part 52 of the spray head 5 are located on the same extension line and can be referred to each other, so not only are they easy to align during assembly, but they only need to be By confirming the position of the alignment member 23 from the appearance, the exact position of the oblique opening 521 can be known, so that the direction of the output of the plasma arc can be accurately grasped, thereby optimizing the machining accuracy. Therefore, the object of the present invention can be achieved indeed.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

2: gun body 21: Shaft 211: End face 22: Distribution Ring 221: Surrounding the Wall 222: Joint 23: Alignment 3: Metal seat 31: Electrodes 4: Collar 41: Wearing parts 411: Docking Department 42: Abutment 421: Mark Department 5: Nozzle 51: Termination pieces 511: Corresponding Department 512: Stomata 52: Tapered pieces 521: Oblique opening 6: Outer sheath L: axis

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: 1 is a cross-sectional view illustrating a conventional oblique plasma cutting device; FIG. 2 is an exploded perspective view illustrating an embodiment of the plasma cutting device of the present invention; Fig. 3 is a sectional view, in conjunction with Fig. 2 to illustrate the mutual assembly of a gun body, a set of rings, and a nozzle of this embodiment; 4 is a schematic diagram illustrating the determination of the position of an oblique opening of the spray head by an alignment member of the gun body; and FIG. 5 is a schematic diagram illustrating the effect of optimizing the machining accuracy that can be produced by the actual use of this embodiment.

2: gun body

21: Shaft

211: End face

22: Distribution Ring

221: Surrounding the Wall

222: Joint

23: Alignment

4: Collar

41: Wearing parts

411: Docking Department

42: Abutment

421: Mark Department

5: Nozzle

51: Termination pieces

511: Corresponding Department

512: Stomata

52: Tapered pieces

521: Oblique opening

6: Outer sheath

L: axis

Claims (5)

A plasma cutting device, comprising: a gun body extending along an axis and comprising a shaft having one end face, a distribution ring extending from the end face of the shaft along the axis, and a pair of pairs formed on the end face and located radially outside the distribution ring an alignment piece, the distribution ring has a surrounding wall surrounding the axis, and a plurality of joints formed on the inner side of the surrounding wall; a metal base, which is terminated on the gun body, and includes an electrode arranged at the end and used for supplying electrical energy; a ring, connected to the gun body and sleeved on the periphery of the metal base, and comprising a piercing piece having a butt joint for engaging with any of the joint parts, and a piercing piece connected to the piercing piece and abutting against the end edge of the distribution ring, and has an abutting piece whose position corresponds to the mark portion of the aligning piece; a spray head terminated to the collar and including a termination piece having a corresponding portion shaped to match the marking portion, and the electrode extending radially tapered from the termination piece to surround the metal seat the conical piece, the conical piece has an oblique opening which is penetrating in a direction deviating from the axis and whose position corresponds to the corresponding part; and An outer sheath is connected to the gun body and surrounds the spray head, thereby fixing the spray head and the collar along the direction parallel to the axis. The plasma cutting device of claim 1, wherein the alignment piece of the gun body, the marking portion of the abutting piece of the collar, the corresponding portion of the termination piece of the spray head, and the The projected position of the oblique opening of the conical piece of the spray head in the direction perpendicular to the axis is on the same straight line. The plasma cutting device according to claim 1, wherein each joint portion of the distribution ring of the gun body is a wire groove extending parallel to the axis, and the butting portion of the penetration member of the collar is a A lug that slides in the slot. The plasma cutting device as claimed in claim 1, wherein the marking portion of the abutting member of the collar is a groove recessed on the outer end edge, and the corresponding portion of the terminating member of the spray head It is an outwardly protruding flange. The plasma cutting device according to claim 1, wherein the terminal piece of the spray head further has a plurality of air holes that are penetrating in a direction perpendicular to the axis.

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