CN211757668U - Copper pipe drawing die with lubricating function - Google Patents
Copper pipe drawing die with lubricating function Download PDFInfo
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- CN211757668U CN211757668U CN201922230506.2U CN201922230506U CN211757668U CN 211757668 U CN211757668 U CN 211757668U CN 201922230506 U CN201922230506 U CN 201922230506U CN 211757668 U CN211757668 U CN 211757668U
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Abstract
The utility model relates to the technical field of copper pipe processing, and discloses a copper pipe stretching die with lubricating function, which comprises a die frame and a die core, wherein the die core comprises a hole die body and a lubricating part, the hole die body comprises a rectangular block, a cylinder and a die hole, the lubricating part is formed with a sinking groove with an opening at the left side, a central positioning hole is formed on the bottom surface of the sinking groove, the right end of the cylinder is inserted and sleeved in the central positioning hole, and an oil cavity is formed by the sinking groove, the rectangular block and the cylinder; a plurality of oil injection holes communicating the die hole and the oil cavity are formed in the cylinder; an oil inlet hole communicated with the sink groove is formed in the upper side wall of the lubricating portion, an oil inlet joint is sleeved on the oil inlet hole, an oil groove is formed in the lower side wall of the right end of the die hole, an oil outlet is formed in the bottom surface of the oil groove, an oil outlet hole communicated with the oil outlet is formed in the lubricating portion, and an oil outlet joint is sleeved on the oil outlet hole. The outer wall of the copper pipe can be lubricated, the friction force between the pipe blank and the die is reduced, the stretching quality of the copper pipe can be effectively improved, and the rejection rate is reduced.
Description
The technical field is as follows:
the utility model relates to a copper pipe processing technology field, concretely relates to copper pipe drawing die with lubricating function.
Background art:
the copper pipe drawing process is characterized in that a semi-finished copper pipe blank is drawn into a product with a certain size and a certain cross section shape through a drawing die, most of the drawing devices adopted at present adopt dies for drawing, and in the process of drawing the copper pipe, because the outer diameter of the pipe blank is far larger than a die hole of the die, the friction force between the pipe blank and the die hole is large, the friction force applied to the pipe blank is increased, the pipe blank is easy to break in the drawing process, the quality of the drawn copper pipe is unstable, and the rejection rate is high.
The utility model has the following contents:
the utility model aims at overcoming prior art's is not enough, provides a tensile mould of copper pipe with lubricating function, and it can lubricate the outer wall of copper pipe, reduces the frictional force between pipe and the mould, can effectively improve the tensile quality of copper pipe, reduces the rejection rate.
The utility model provides a technical problem's scheme is:
a copper pipe drawing die with a lubricating function comprises a die frame fixedly connected with a rack and a die core in a rectangular shape, wherein the die frame comprises a first die frame and a second die frame which are arranged in front and back and detachably and fixedly connected through bolts, and the die core is clamped between the first die frame and the second die frame; the die core comprises a hole die body and a lubricating part which are fixedly connected through screws, the hole die body comprises a rectangular block, a cylinder and die holes which penetrate through the hole die body in the left-right direction,
the lubricating part is in a rectangular block shape, a sink groove with an opening at the left side is formed in the lubricating part, a central positioning hole matched with the cylinder is formed in the bottom surface of the sink groove, the right end of the cylinder is inserted and sleeved in the central positioning hole, and an oil cavity is formed by the sink groove, the rectangular block and the cylinder; a plurality of oil injection holes communicated with the die holes and the oil cavity are formed in the cylinder; the lubricating device is characterized in that an oil inlet hole communicated with the sink groove is formed in the upper side wall of the lubricating portion, an oil inlet joint is sleeved on the oil inlet hole and is in screwed connection with the upper end of the first die frame, an oil groove is formed in the lower side wall of the right end of the die hole, an oil outlet is formed in the bottom surface of the oil groove, an oil outlet hole communicated with the oil outlet is formed in the lower side wall of the lubricating portion, an oil outlet joint is sleeved in the oil outlet hole, and the oil outlet joint is in screwed connection with the lower end of the first die frame.
And an O-shaped ring is sleeved on the outer wall of the right end of the cylinder and pressed against the inner side wall of the central positioning hole.
And a sealing gasket is clamped between the combining surfaces of the lubricating part and the rectangular block.
The lubricating part is formed with a convex ring protruding to the left, the right side wall of the rectangular block is formed with a spigot, and the convex ring is inserted and sleeved in the spigot.
The oil spout hole is equipped with two circles, and two circles of oil spout holes are controlled and are set up.
The die holes comprise a first straight hole, a second straight hole, a first guiding taper hole and a second guiding taper hole which are arranged from right to left and have diameters which are reduced in sequence;
the inner diameter of the second straight hole is in clearance fit with the outer diameter of the copper pipe to be stretched;
the oil spray hole is communicated with the first straight hole.
The oil spray hole is obliquely arranged in a left-low-right mode.
The utility model discloses an outstanding effect is:
compared with the prior art, the outer wall of the copper pipe can be lubricated, the friction force between the pipe blank and the die is reduced, the stretching quality of the copper pipe can be effectively improved, and the rejection rate is reduced.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 with respect to B;
fig. 4 is a schematic structural view of the hole mold body of the present invention;
fig. 5 is a schematic structural view of the lubrication portion of the present invention.
The specific implementation mode is as follows:
in an embodiment, as shown in fig. 1 to 5, a copper pipe drawing die with a lubricating function comprises a die frame 1 fixedly connected with a frame and a die core 2 in a rectangular shape, wherein the die frame 1 comprises a first die frame 11 and a second die frame 12 which are arranged in a front-back manner and detachably and fixedly connected through bolts, and the die core 2 is clamped between the first die frame 11 and the second die frame 12; the mold core 2 comprises a hole mold body 21 and a lubricating part 22 which are fixedly connected through screws, the hole mold body 21 comprises a rectangular block 211, a cylinder 212 and a mold hole 213 which penetrates in the left-right direction and are integrally formed,
the lubricating part 22 is in a rectangular block shape, a sunk groove 221 with an opening at the left side is formed in the lubricating part 22, a central positioning hole 222 matched with the cylinder 212 is formed in the bottom surface of the sunk groove 221, the right end of the cylinder 212 is inserted into the central positioning hole 222, and the oil cavity 200 is formed by the sunk groove 221, the rectangular block 211 and the cylinder 212; a plurality of oil injection holes 214 which are communicated with the die holes 213 and the oil cavity 200 are formed on the cylinder body 212; an oil inlet hole 223 communicated with the sinking groove 221 is formed in the upper side wall of the lubricating portion 22, the oil inlet hole 223 is sleeved with an oil inlet joint 23, the oil inlet joint 23 is in threaded connection with the upper end of the first mold frame 11, an oil groove 215 is formed in the lower side wall of the right end of the mold hole 213, an oil outlet 216 is formed in the bottom surface of the oil groove 215, an oil outlet hole 224 communicated with the oil outlet 216 is formed in the lower side wall of the lubricating portion 22, an oil outlet joint 24 is sleeved with the oil outlet hole 224, the oil outlet joint 24 is in threaded connection with the lower end of the first mold frame 11, and the oil inlet joint 23 and the oil outlet joint 24 are connected with an external oil inlet pipe and an external oil outlet.
Furthermore, an O-ring 25 is sleeved on the outer wall of the right end of the cylindrical body 212, and the O-ring 25 is pressed against the inner side wall of the central positioning hole 222.
Further, a gasket 26 is interposed between the surfaces of the lubricating portion 22 and the rectangular block 211.
Furthermore, the lubricating portion 22 is formed with a convex ring 225 protruding towards the left, a spigot 217 is formed on the right side wall of the rectangular block 211, and the convex ring 225 is inserted into the spigot 217.
Furthermore, the oil injection hole 214 is provided with two circles, and the two circles of oil injection holes 214 are arranged on the left and right.
Furthermore, the die holes 213 include a first straight hole 2131, a second straight hole 2132, a first guiding taper hole 2133 and a second guiding taper hole 2134 which are arranged from right to left and have decreasing diameters in sequence;
the inner diameter of the second straight hole 2132 is in clearance fit with the outer diameter of the copper pipe 9 to be stretched;
the oil jet hole 214 communicates with the first straight hole 2131.
Furthermore, the oil injection holes 214 are arranged obliquely from bottom to top.
The working principle is as follows: the copper pipe 9 to be stretched moves from right to left, and the diameter of the copper pipe is reduced under the guiding action of the first guiding taper hole 2133 and the second guiding taper hole 2134;
a lubrication route: an external oil inlet pipe fills lubricating oil into the oil cavity 200 through the oil inlet connector 23, the lubricating oil in the oil cavity 200 is sprayed onto the outer wall of the copper pipe 9 before stretching through the oil spraying hole 214, the lubricating oil on the outer wall of the copper pipe 9 can reduce the friction force of the copper pipe during stretching, the sprayed lubricating oil cannot flow out of the right side of the die hole 213 due to the fact that the copper pipe 9 moves from right to left and the oil spraying hole 214 is obliquely arranged, the lubricating oil flows into the oil groove 215 through a gap between the outer wall of the copper pipe 9 before stretching and the inner wall of the first straight hole 2131, and then flows onto the oil outlet pipe through the oil outlet 216 and the oil outlet.
Finally, the above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (7)
1. A copper pipe drawing die with a lubricating function comprises a die frame (1) fixedly connected with a rack and a die core (2) in a rectangular shape, wherein the die frame (1) comprises a first die frame (11) and a second die frame (12) which are arranged in front and back and detachably and fixedly connected through bolts, and the die core (2) is clamped between the first die frame (11) and the second die frame (12); the method is characterized in that:
the mold core (2) comprises a hole mold body (21) and a lubricating part (22) which are fixedly connected through screws, the hole mold body (21) comprises a rectangular block (211), a cylinder (212) and mold holes (213) which penetrate through in the left-right direction in an integrated mode,
the lubricating part (22) is rectangular block-shaped, a sink groove (221) with an opening at the left side is formed in the lubricating part (22), a central positioning hole (222) matched with the cylinder (212) is formed in the bottom surface of the sink groove (221), the right end of the cylinder (212) is inserted into the central positioning hole (222), and an oil cavity (200) is formed by the sink groove (221), the rectangular block (211) and the cylinder (212); a plurality of oil injection holes (214) which are communicated with the die holes (213) and the oil cavity (200) are formed in the cylinder body (212); the lubricating oil structure is characterized in that an oil inlet hole (223) communicated with a sink groove (221) is formed in the upper side wall of the lubricating portion (22), an oil inlet joint (23) is sleeved on the oil inlet hole (223), the oil inlet joint (23) is in threaded connection with the upper end of the first die frame (11), an oil groove (215) is formed in the lower side wall of the right end of the die hole (213), an oil outlet (216) is formed in the bottom surface of the oil groove (215), an oil outlet hole (224) communicated with the oil outlet (216) is formed in the lower side wall of the lubricating portion (22), an oil outlet joint (24) is sleeved in the oil outlet hole (224), and the oil outlet joint (24) is in threaded connection with the lower end of the first die frame (11).
2. A copper tube drawing die with a lubricating function as claimed in claim 1, wherein: an O-shaped ring (25) is sleeved on the outer wall of the right end of the cylinder (212), and the O-shaped ring (25) is pressed on the inner side wall of the central positioning hole (222).
3. A copper tube drawing die with a lubricating function as claimed in claim 1, wherein: a sealing gasket (26) is clamped between the combination surface of the lubricating part (22) and the rectangular block (211).
4. A copper tube drawing die with a lubricating function as claimed in claim 1, wherein: the lubricating part (22) is formed into a convex ring (225) protruding to the left, the right side wall of the rectangular block (211) is formed with a spigot (217), and the convex ring (225) is inserted and sleeved in the spigot (217).
5. A copper tube drawing die with a lubricating function as claimed in claim 1, wherein: the oil spray hole (214) is provided with two circles, and the two circles of oil spray holes (214) are arranged left and right.
6. A copper tube drawing die with a lubricating function as claimed in claim 1, wherein: the die holes (213) comprise a first straight hole (2131), a second straight hole (2132), a first guide taper hole (2133) and a second guide taper hole (2134), which are arranged from right to left and have diameters which are reduced in sequence;
the inner diameter of the second straight hole (2132) is in clearance fit with the outer diameter of the copper pipe (9) to be stretched;
the oil spray hole (214) is communicated with the first straight hole (2131).
7. A copper pipe drawing die with a lubricating function as claimed in claim 6, wherein: the oil spray hole (214) is obliquely arranged in a manner of low left and high right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922230506.2U CN211757668U (en) | 2019-12-13 | 2019-12-13 | Copper pipe drawing die with lubricating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922230506.2U CN211757668U (en) | 2019-12-13 | 2019-12-13 | Copper pipe drawing die with lubricating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211757668U true CN211757668U (en) | 2020-10-27 |
Family
ID=72981246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922230506.2U Expired - Fee Related CN211757668U (en) | 2019-12-13 | 2019-12-13 | Copper pipe drawing die with lubricating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211757668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578990A (en) * | 2021-08-09 | 2021-11-02 | 西北工业大学 | Drawing die and drawing method for micro-fine pipe |
-
2019
- 2019-12-13 CN CN201922230506.2U patent/CN211757668U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578990A (en) * | 2021-08-09 | 2021-11-02 | 西北工业大学 | Drawing die and drawing method for micro-fine pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 Termination date: 20211213 |