CN218745462U - Sectional type high-insulation plasma cutting gun head - Google Patents
Sectional type high-insulation plasma cutting gun head Download PDFInfo
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- CN218745462U CN218745462U CN202222684443.XU CN202222684443U CN218745462U CN 218745462 U CN218745462 U CN 218745462U CN 202222684443 U CN202222684443 U CN 202222684443U CN 218745462 U CN218745462 U CN 218745462U
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Abstract
The utility model relates to a cutting technical field. A sectional high-insulation plasma cutting gun head comprises an inner copper piece, an outer copper piece, an insulation piece and a connecting piece, wherein the connecting piece is in threaded connection with the inner copper piece, and a limiting groove for limiting and fixing the inner side area of the insulation piece is formed between the connecting piece and the inner copper piece in a surrounding manner; the insulating part is fixedly connected with the inner copper part through an adhesive; the outer wall of the insulating part is provided with a step which extends outwards in the radial direction, and the outer diameter of the step is larger than that of the inner copper part and larger than that of the outer copper part; the outer copper part is in threaded connection with the insulating part. The utility model discloses a changed the connection structure of interior copper spare, outer copper spare and insulating part, with the single interior copper spare of tradition, the components of a whole that can function independently is interior copper spare and connecting piece threaded connection's form, and the impact of outside is transmitted interior copper spare by the connecting piece, avoids the insulating part, makes the impact strength of rifle head better. Through the addding of step, the creepage distance between copper spare and the outer copper spare in the increase, reinforcing insulating properties.
Description
Technical Field
The utility model relates to a cutting technical field, concretely relates to plasma cutting rifle head.
Background
Material handling devices such as plasma cutting, flame cutting and lasers are widely used for cutting and marking workpieces. The gas used for plasma cutting may be an inert or reactive gas. The plasma arc produced by cutting is a high temperature and high momentum ionized jet of constricted plasma gas.
Compared with the traditional flame cutting, the plasma cutting speed is higher, the efficiency is higher and the quality is better under the condition that the thickness is less than 25 mm. Compared with laser cutting, the laser cutting method has obvious advantages in cutting cost, almost 1/3 of the laser cutting cost, and the laser is only suitable for cutting thin plates and has a narrow application range. A trend of replacing the torch cutter and the laser cutter with the numerical control plasma cutter has been developed in industrially developed countries. Therefore, the research and the popularization of the plasma cutting technology have important significance and profound development prospect.
A plasma cutting torch head commonly used in the prior art includes an inner copper member, an outer copper member, and an insulating member interposed between the inner copper member and the outer copper member. Because the distance between the outer copper piece and the inner copper piece is short, the insulating property is poor, and the hidden trouble of short circuit is caused; and the inner copper part and the insulating part are connected through threads, and the outer copper part and the insulating part are radially connected through pins. In the use process, once the inner copper piece is subjected to axial impact force, the insulating piece is prone to being broken at the pin joint, and accordingly the inner copper piece is scrapped.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a plasma cutting rifle head of sectional type high insulation to solve above at least one technical problem.
In order to achieve the purpose, the utility model provides a sectional high-insulation plasma cutting gun head, which comprises an inner copper part, an outer copper part and an insulating part, and is characterized by also comprising a connecting part, wherein the connecting part is a metal conductive part;
the connecting piece is in threaded connection with the inner copper piece, and a limiting groove for limiting and fixing part of the inner side area of the insulating piece is formed between the connecting piece and the inner copper piece in a surrounding manner;
the insulating part is fixedly connected with the inner copper part through an adhesive;
the outer wall of the insulating part is provided with a step extending outwards in the radial direction, and the outer diameter of the step is larger than that of the inner copper part and larger than that of the outer copper part;
the outer copper part is in threaded connection with the insulating part.
The utility model discloses a changed the connection structure of interior copper spare, outer copper spare and insulating part, with the single interior copper spare of tradition, the components of a whole that can function independently is interior copper spare and connecting piece threaded connection's form, and the impact of outside is transmitted interior copper spare by the connecting piece, avoids the insulating part, makes the impact strength of rifle head better.
Through the increase of the step, the creepage distance between the inner copper piece and the outer copper piece is increased, and the insulating property is enhanced.
Further preferably, the insulating member is provided with an axially-communicated through hole and a counter bore, the inner diameter of the counter bore is larger than that of the through hole, and the counter bore is located on one side, adjacent to the connecting member, of the insulating member;
a step surface is arranged between the through hole and the counter bore.
Further preferably, a first sealing ring is clamped between the outer wall of the insulating part and the outer copper part;
and a second sealing ring is clamped between the outer wall of the outer copper piece and the outer nozzle.
Further preferably, the outer copper part is of a cylindrical structure, the insulating part partially penetrates through the outer copper part and extends out of the outer copper part, and the end face of the outer copper part is attached to the end face of the step.
Further preferably, one end of the inner copper piece far away from the connecting piece is taken as a far end, and one end of the inner copper piece close to the connecting piece is taken as a near end;
the far end of the inner copper piece is provided with an air chamber for piston movement and an inclined hole connected with an air pipe, and the near end of the inner copper piece is provided with a thread structure in threaded connection with the connecting piece;
the thread structure is an internal thread or an external thread.
Preferably, the thread structure is an external thread;
the connecting piece is of a hollow cylindrical structure, and the far end of the connecting piece is provided with an internal thread matched with the external thread;
the inner wall of the connecting piece is provided with a boss, and the far end face of the boss is tightly attached to the near end face of the inner copper piece;
a gap exists between the distal end of the connector and the insulator.
By means of the gap, the connection member is prevented from conducting forces to the insulating member.
Further preferably, a counter bore avoiding the connecting piece is formed in the inner wall of the near end of the insulating piece;
and a gap is reserved between the far end of the connecting piece and the far end face of the counter bore.
As another preferable mode, the thread structure is an internal thread;
the connecting piece is of a hollow cylindrical structure, and the far end of the connecting piece is provided with an external thread matched with the internal thread;
the far end face of the connecting piece is tightly attached to the step surface at the bottom of the internal thread of the inner copper piece;
an outward convex part extending outwards is arranged on the outer side of the connecting piece, and the outward convex part is arranged adjacent to the external thread;
a counter bore avoiding the outer convex part is formed in the inner wall of the near end of the insulating part;
and a gap is reserved between the end face of the outer convex part and the far end face of the counter bore.
By means of the gap, the connection member is prevented from conducting forces to the insulating member.
The utility model has the advantages that: the utility model provides a plasma cutting rifle head of sectional type high insulation, high strength adopts sectional type structure, lets the rifle head receive external impact force when falling or knocking on not transmitting the most fragile insulating part to increase the intensity and the durability of rifle head, another purpose is that great insulating part external diameter lets the creepage distance grow between outer copper spare and the interior copper spare, thereby makes the rifle head have better short circuit prevention performance.
Drawings
FIG. 1 is a cross-sectional view of the use of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of a fitting containing part according to embodiment 1 of the present invention;
FIG. 3 is a partial cross-sectional view of a novel embodiment 1 of the use;
FIG. 4 is an exploded view of the novel structure of FIG. 3 in use;
fig. 5 is a partial sectional view of the embodiment 2 of the present invention.
Wherein: 1 is interior copper spare, 2 is the insulating part, 3 is outer copper spare, 4 is the connecting piece, 5 is the shunt, 6 is the nozzle, 7 is first sealing washer, 8 is the second sealing washer, 11 is the air chamber, 12 is the inclined hole, 13 is the external screw thread, 14 is interior copper spare near-end terminal surface, 21 is the step, 22 is step near-end terminal surface, 23 is first seal ring groove, 24 is the through-hole, 25 is the counter bore, 26 is the step face, 31 is outer copper spare distal end terminal surface, 32 is the second seal ring groove, 41 is connecting piece distal end terminal surface, 42 is the internal thread, 43 is the boss.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, in embodiment 1, a sectional high-insulation plasma cutting torch head includes an inner copper part 1, an outer copper part 3, an insulating part 2, and a connecting part 4, where the connecting part 4 is a metal conductive part; the connecting piece 4 is in threaded connection with the inner copper piece 1. The threaded connection can be further reinforced by using a thread sealant. A limiting groove for limiting and fixing the inner side area of the insulating part 2 is formed between the connecting part 4 and the inner copper part 1; the insulating part 2 is fixedly connected with the inner copper part 1 through an adhesive; the outer copper member 3 is screwed to the insulator 2. The utility model discloses a having changed interior copper spare 1, outer copper spare 3 and insulating part 2's connection structure, with traditional single interior copper spare 1, the components of a whole that can function independently is interior copper spare 1 and connecting piece 4 threaded connection's form, and copper spare 1 in is transmitted by connecting piece 4 when outside impact, avoids insulating part 2, makes the impact strength of rifle head better. The step is located the regional outside of locating the spacing groove.
The material of the insulating member may be bakelite, VESPEL, PEEK, PA66+30% GF, polysulfone resin, or the like.
The outer wall of the insulating part 2 is provided with a step 21 extending outwards in the radial direction, and the outer diameter of the step 21 is larger than that of the inner copper part 1 and larger than that of the outer copper part 3. When the gun head is used, the inner copper part is connected with the negative pole of the circuit, the outer copper part is connected with the positive pole of the circuit, and the step of the larger insulating part enables the creepage distance between the inner copper part 1 and the outer copper part 3 to be increased, so that the insulating property of the gun head is improved.
The insulating part 2 is provided with a through hole 24 and a counter bore 25 which are axially communicated, the inner diameter of the counter bore 25 is larger than that of the through hole 24, and the counter bore is positioned at one side of the insulating part 2 adjacent to the connecting part 4; a step surface 26 is present between the through bore and the counterbore. The insulating part is provided with a through hole area which is positioned in the limiting groove.
A first sealing ring 7 is clamped between the outer wall of the insulating part 2 and the outer copper part 3. The outer wall of the insulating part is provided with a first sealing ring groove 23 embedded with a first sealing ring. And a second sealing ring 8 is clamped between the outer wall of the outer copper part 3 and the outer nozzle. And a second sealing ring groove 32 embedded with a second sealing ring is formed in the outer wall of the outer copper piece.
The outer copper member 3 is a cylindrical structure, and the insulating member 2 partially penetrates through the outer copper member 3 and extends out of the outer copper member 3. That is, the distance from the proximal end face of the step to the proximal end face of the insulator is greater than the axial length of the outer copper member. The end surface of the outer copper member (i.e., the outer copper member distal end surface 31) is in abutment with the end surface of the step 21 (i.e., the step proximal end surface 22).
One end of the inner copper part 1 far away from the connecting piece 4 is a far end, and one end of the inner copper part 1 close to the connecting piece 4 is a near end; the far end of the inner copper part 1 is provided with an air chamber 11 for piston movement and an inclined hole 12 connected with an air pipe, and the near end of the inner copper part 1 is provided with a thread structure in threaded connection with the connecting piece 4; the thread structure is an internal thread or an external thread.
The thread structure is an external thread 13; the connecting piece 4 is of a hollow cylindrical structure, and the far end of the connecting piece 4 is provided with an internal thread 42 matched with the external thread 13; the inner wall of the connecting piece 4 is provided with a boss 43, and the far end face of the boss 43 is tightly attached to the near end face of the inner copper piece 1 (namely the near end face 14 of the inner copper piece); there is a gap between the distal end of the connecting member 4 and the insulating member 2. By means of the gap, the connection 4 is prevented from transmitting forces to the insulating element 2. The inner wall of the near end of the insulating part 2 is provided with a counter bore avoiding the connecting part 4; there is a gap between the distal end of the connector 4 (i.e., the connector distal end face 41) and the counterbore distal end face (the step face 26).
The plasma cutting gun is usually prevented from falling or knocking in the using process, firstly, the nozzle 6 exposed outside receives external impact force, the impact force can be transmitted to the shunt 5 from the nozzle 6 and then transmitted to the proximal end face of the connecting piece 4 and transmitted to the inner copper piece 1 through the boss 43, a certain gap is reserved between the distal end face 41 of the connecting piece and the step face 26 to play a role in buffering, the force received in the whole process is axial force and is not transmitted to the weakest insulating piece, and a good protection effect is achieved.
Referring to fig. 5, embodiment 2, on the basis of embodiment 1, differs in that the thread structure is an internal thread; the connecting piece 4 is of a hollow cylindrical structure, and the far end of the connecting piece 4 is provided with an external thread matched with the internal thread; the distal end face of the connecting piece 4 is tightly attached to the step surface at the bottom of the internal thread of the internal copper piece 1; the outer side of the connecting piece 4 is provided with an outward extending convex part; the external convex part is arranged adjacent to the external thread. A counter bore avoiding the outer convex part is formed in the inner wall of the near end of the insulating part 2; and a gap is reserved between the end face of the convex part and the far end face of the counter bore. By means of the gap, the connection element 4 is prevented from transmitting forces to the insulating element 2.
A first sealing ring 7 is clamped between the outer wall of the insulating part 2 and the outer copper part 3. And a second sealing ring 8 is clamped between the outer wall of the outer copper part 3 and the outer nozzle.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A sectional high-insulation plasma cutting gun head comprises an inner copper part, an outer copper part and an insulation part, and is characterized by further comprising a connecting piece, wherein the connecting piece is a metal conductive piece;
the connecting piece is in threaded connection with the inner copper piece, and a limiting groove for limiting and fixing part of the inner side area of the insulating piece is formed between the connecting piece and the inner copper piece in a surrounding manner;
the insulating part is fixedly connected with the inner copper part through an adhesive;
the outer wall of the insulating part is provided with a step extending outwards in the radial direction, and the outer diameter of the step is larger than that of the inner copper part and larger than that of the outer copper part;
the outer copper part is in threaded connection with the insulating part.
2. A segmented highly insulating plasma cutting torch head according to claim 1, wherein: the insulating part is provided with an axially-communicated through hole and a counter bore, the inner diameter of the counter bore is larger than that of the through hole, and the counter bore is positioned on one side of the insulating part adjacent to the connecting part;
a step surface is arranged between the through hole and the counter bore.
3. The segmented high dielectric plasma cutting torch head of claim 1, wherein: a first sealing ring is clamped between the outer wall of the insulating part and the outer copper part;
and a second sealing ring is clamped between the outer wall of the outer copper piece and the outer nozzle.
4. A segmented highly insulating plasma cutting torch head according to claim 1, wherein: the outer copper part is of a cylindrical structure, the insulating part partially penetrates through the outer copper part and extends out of the outer copper part, and the end face of the outer copper part is attached to the end face of the step.
5. A segmented highly insulating plasma cutting torch head according to claim 1, wherein: taking one end of the inner copper piece far away from the connecting piece as a far end, and taking one end of the inner copper piece close to the connecting piece as a near end;
the far end of the inner copper piece is provided with an air chamber for piston movement and an inclined hole connected with an air pipe, and the near end of the inner copper piece is provided with a thread structure in threaded connection with the connecting piece;
the thread structure is an internal thread or an external thread.
6. A segmented highly insulating plasma cutting torch head according to claim 5, wherein: the thread structure is an external thread;
the connecting piece is of a hollow cylindrical structure, and the far end of the connecting piece is provided with an internal thread matched with the external thread;
the inner wall of the connecting piece is provided with a boss, and the far end face of the boss is tightly attached to the near end face of the inner copper piece;
a gap exists between the distal end of the connector and the insulator.
7. A segmented highly insulating plasma cutting torch head according to claim 6, wherein: a counter bore avoiding the connecting piece is formed in the inner wall of the near end of the insulating piece;
and a gap is reserved between the far end of the connecting piece and the far end face of the counter bore.
8. A segmented highly insulating plasma cutting torch head according to claim 5, wherein: the thread structure is an internal thread;
the connecting piece is of a hollow cylindrical structure, and the far end of the connecting piece is provided with an external thread matched with the internal thread;
the far end face of the connecting piece is tightly attached to the step surface at the bottom of the internal thread of the internal copper piece;
an outward convex part extending outwards is arranged on the outer side of the connecting piece, and the outward convex part is arranged adjacent to the external thread;
a counter bore avoiding the outer convex part is formed in the inner wall of the near end of the insulating part;
and a gap is reserved between the end face of the outer convex part and the far end face of the counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222684443.XU CN218745462U (en) | 2022-10-12 | 2022-10-12 | Sectional type high-insulation plasma cutting gun head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222684443.XU CN218745462U (en) | 2022-10-12 | 2022-10-12 | Sectional type high-insulation plasma cutting gun head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218745462U true CN218745462U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222684443.XU Active CN218745462U (en) | 2022-10-12 | 2022-10-12 | Sectional type high-insulation plasma cutting gun head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218745462U (en) |
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2022
- 2022-10-12 CN CN202222684443.XU patent/CN218745462U/en active Active
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