CN107185985B - Production line and production method for large-length special-shaped copper pipe - Google Patents
Production line and production method for large-length special-shaped copper pipe Download PDFInfo
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- CN107185985B CN107185985B CN201710578878.7A CN201710578878A CN107185985B CN 107185985 B CN107185985 B CN 107185985B CN 201710578878 A CN201710578878 A CN 201710578878A CN 107185985 B CN107185985 B CN 107185985B
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- copper
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- extrusion wheel
- copper pipe
- extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Abstract
The invention discloses a large-length special-shaped copper pipe production line which consists of a copper rod pay-off rack (2), a copper rod straightening device (3), a continuous extruder (4), a product cooling system (5), a rice recorder (6) and a wire winding and unwinding machine (7). According to the production line and the production method of the large-length special-shaped copper pipe, two upward continuous casting pure copper or copper alloy rods are adopted as blanks, heating is not needed, continuous extrusion of copper pipes with different shapes and different specifications can be realized only by replacing a male die and a female die, the copper pipe can be formed at one time, drawing is not needed, the length is not limited, and the whole process flow is short, and the production is flexible, efficient and energy-saving; the two blanks are metallurgically bonded in the concave cavity, the bonding area can reach tensile strength close to that of the parent metal, and the length of the copper pipe is not limited.
Description
Technical Field
The invention relates to the field of nonferrous metal processing, in particular to a production line and a production method of a long special-shaped copper pipe.
Background
The copper conduit is a hollow copper pipe product, has the characteristics of large conductive section, large flow of cooling medium passing through unit time, good heat dissipation performance and the like, and is a key material for manufacturing various motor coils and accelerators in the atomic energy industry and the motor industry; at present, the single-hole or multi-hole special-shaped copper pipe is mainly produced by adopting the traditional perforation extrusion-rolling-drawing process, the process is complex, the production period is long, the energy consumption is high, the material utilization rate is low, the length of the copper pipe is limited by the size of a blank, and because the production capacity of the domestic copper pipe is limited, a 500-meter-long lead wire needs to be welded together by a plurality of copper pipes, so that a lot of extra technical problems are brought, the research and development cost is increased, the development period of a new product is prolonged, and the processing of a large-length special-shaped hollow copper lead pipe needs to have a brand new replacement process with short flow, low energy consumption and near net shape.
Disclosure of Invention
The invention aims to provide a production line and a production method of a large-length special-shaped copper pipe, which can be molded at one time, does not need drawing, is free from limit on length, and has the advantages of short whole technological process, flexible production, high efficiency and energy conservation.
The technical scheme adopted by the invention for achieving the purpose is as follows: a large-length special-shaped copper pipe production line consists of a copper rod pay-off rack (2), a copper rod straightening device (3), a continuous extruder (4), a product cooling system (5), a rice recorder (6) and a winding and unwinding machine (7).
The continuous extrusion machine (4) comprises an extrusion wheel (8), a material pressing wheel (9), a cavity (10), a material blocking block (11), a male die (12), a female die (13), a cavity cover (14), a scraper (15), a guide plate (16) and a shoe seat (17), wherein the material pressing wheel (9) is arranged on the extrusion wheel (8), the scraper (15) is arranged on the outer side of the extrusion wheel (8), the guide plate (16) is arranged between the extrusion wheel (8) and the shoe seat (17), the cavity (10) is arranged in the shoe seat (17), the male die (12) and the female die (13) are arranged in the cavity (10), the cavity cover (14) is arranged on the cavity (10), and the material blocking block (11) is arranged at the contact surface of the extrusion wheel (8) and the cavity (10).
The outer circumferential surface of the extrusion wheel (8) is provided with three annular grooves which are parallel to each other and perpendicular to the axis, the axial section of the middle annular groove (18) is rectangular, and the axial section of the annular grooves (19) on two sides is convex.
The outer circumferential surface of the pressing wheel (9) is provided with three annular protrusions which are parallel to each other and perpendicular to the axis, the middle annular protrusion extends into the middle annular groove of the pressing wheel, and the annular protrusions (21) on two sides extend into the annular grooves (19) on two sides of the pressing wheel respectively.
Two groups of first cambered surfaces (22) which are matched with the outer circumferential surface of the extrusion wheel simultaneously are arranged on the cavity (10), two feeding holes (23) are respectively arranged at the tail ends of the two groups of cambered surfaces, the two feeding holes are connected by a concave cavity (24), a small protruding island (25) is arranged at the central part of the concave cavity, a small island central hole (26) is arranged at the center of the small island, and a rectangular groove (27) is respectively arranged at the adjacent positions of the two feeding holes.
Two strip-shaped bulges (28) and a sinking groove (29) are arranged on the baffle block (11).
The male die (12) is provided with a plurality of sizing areas (30) at the discharge end along the extrusion direction, and the cross section of each sizing area (30) is circular or non-circular.
The scraper (15) is of a strip-shaped flat plate structure, two bulges (31) with sharp-angle cutting edges are arranged at one end of the scraper, and the two bulges extend into annular grooves (19) on two sides of the extrusion wheel.
The guide plate (16) is of a circular arc structure, and two groups of second cambered surfaces (32) which are matched with the outer circumferential surface of the extrusion wheel simultaneously are arranged on the inner cambered surface of the guide plate (16).
The invention adopts another technical scheme for realizing the aim as follows: the production method of the long-length special-shaped copper pipe of the production line comprises the following steps of:
A. two copper rods pass through a copper rod pay-off rack and a copper rod straightening device and then enter a continuous extruder;
B. starting a continuous extruder to enable the extrusion wheel to rotate, respectively placing two copper rods between annular grooves on two sides of the extrusion wheel and annular protrusions on two sides of the material pressing wheel, clamping the two copper rods by the annular grooves of the extrusion wheel after passing through the material pressing wheel, rotating along with the extrusion wheel, changing the flowing direction after encountering a material blocking block to enter a cavity, then entering a concave cavity along a feeding hole of the cavity, welding the copper rods under the action of high temperature and high pressure in the concave cavity, and extruding a copper pipe by a gap between a male die and an inner hole of a female die in the cavity after welding;
C. and after the copper pipe is formed, the copper pipe enters a product cooling system and then is wound on a winding and arranging machine after passing through a meter counter, so that the production of the long special-shaped copper pipe is completed.
According to the production line and the production method of the large-length special-shaped copper pipe, two upward continuous casting pure copper or copper alloy rods are adopted as blanks, continuous extrusion of copper pipes with different shapes and different specifications can be realized only by replacing a male die and a female die without heating, the copper pipe can be formed at one time, drawing is not needed, the length is not limited, and the whole process flow is short, flexible, efficient and energy-saving; the two blanks are metallurgically bonded in the concave cavity, the bonding area can reach tensile strength close to that of the parent metal, and the length of the copper pipe is not limited.
Drawings
Fig. 1 is a schematic structural view of a large-length special-shaped copper pipe production line of the invention.
Fig. 2 is a schematic structural view of a forming part of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Fig. 3 is a schematic drawing of the extrusion wheel structure of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Figure 4 is a cross-sectional view of the extrusion wheel of a continuous extrusion machine of a large length profiled copper tube production line of the present invention.
Fig. 5 is a schematic diagram of a press wheel structure of a continuous extruder of a large-length special-shaped copper pipe production line.
Fig. 6 is a schematic diagram of a cavity structure of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Fig. 7 is a schematic diagram II of a cavity structure of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Fig. 8 is a schematic diagram of the structure of a baffle block of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Fig. 9 is a schematic diagram of the male die structure of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Fig. 10 is a schematic view of the doctor blade structure of a continuous extrusion machine of a large-length profiled copper pipe production line of the invention.
FIG. 11 is a schematic view of the structure of a guide plate of a continuous extrusion machine of a large-length special-shaped copper pipe production line.
Fig. 12 is a schematic diagram of the structure of the inner barrel layer of the grooves on two sides of the extrusion wheel of the continuous extrusion machine of the large-length special-shaped copper pipe production line.
Fig. 13 is a schematic diagram II of the inner barrel layer structure of the grooves on two sides of the extrusion wheel of the continuous extrusion machine of the large-length special-shaped copper pipe production line.
Detailed Description
As shown in fig. 1 to 13, the production line of the large-length special-shaped copper pipe comprises a copper rod pay-off rack 2, a copper rod straightening device 3, a continuous extrusion machine 4, a product cooling system 5, a meter recorder 6 and a winding and unwinding machine 7, wherein the continuous extrusion machine 4 comprises an extrusion wheel 8, a material pressing wheel 9, a cavity 10, a material blocking block 11, a male die 12, a female die 13, a cavity cover 14, a scraper 15, a guide plate 16 and a shoe 17, the material pressing wheel 9 is arranged on the extrusion wheel 8, the scraper 15 is arranged on the outer side of the extrusion wheel 8, the guide plate 16 is arranged between the extrusion wheel 8 and the shoe 17, the cavity 10 is arranged in the shoe 17, the male die 12 and the female die 13 are arranged in the cavity 10, the cavity cover 14 is arranged on the cavity 10, the material blocking block 11 is arranged at the contact surface of the extrusion wheel 8 and the cavity 10, the extrusion wheel 8 is an annular piece, three mutually parallel annular grooves perpendicular to the axis are formed in the outer circumferential surface of the extrusion wheel 8, the axial section of the middle annular groove 18 is rectangular and is matched with the middle annular protrusions 20 pressed by the extrusion wheel to axially position the main shaft, the axial section of the annular grooves 19 on two sides is convex, during operation, the copper rods 11 are fed in, the extrusion wheel 9 is an annular piece, three mutually parallel annular protrusions perpendicular to the axis are formed in the outer circumferential surface of the extrusion wheel 9, the middle annular protrusions 20 extend into the middle annular groove of the extrusion wheel and are used for axially positioning the extrusion wheel, and the annular protrusions 21 on two sides extend into the annular grooves 19 on two sides of the extrusion wheel respectively to press the copper rods into the grooves of the extrusion wheel; the axial fixing of the pressing wheel 9 can not move left and right, the cavity 10 is provided with two groups of first cambered surfaces 22 which are matched with the outer circumferential surface of the pressing wheel at the same time, the tail ends of the two groups of cambered surfaces are respectively provided with two feeding holes 23 which are connected by a concave cavity 24, the center part of the concave cavity is provided with a small convex island 25, the center of the small island is provided with a small island center hole 26 for installing the male die 12, the adjacent positions of the two feeding holes are respectively provided with a rectangular groove 27 for installing the baffle block 11, the baffle block 11 is provided with two strip-shaped bulges 28 and a sinking groove 29, the width E of the baffle block is larger than the width C of the strip-shaped bulges, the width C of the strip-shaped bulges is larger than the width D of the sinking grooves, the male die 12 can be installed on the cavity, and can also form an integral structure with the cavity, the extrusion of products with different specifications can be realized on one male die by arranging a plurality of sizing areas 30 at the discharge end along the extrusion direction, the cross section of each sizing area 30 is circular or non-circular, the inner hole of each female die 13 is circular or non-circular, each scraper 15 is of a strip-shaped flat plate structure, two bulges 31 with sharp angle cutting edges are arranged at one end of each sizing area, the two bulges extend into annular grooves 19 at two sides of the extrusion wheel, each guide plate 16 is of a circular arc structure, two groups of second cambered surfaces 32 matched with the outer circumferential surface of the extrusion wheel at the same time are arranged on the inner cambered surface of each guide plate 16, after the extrusion wheel rotates for the first time, a thin first copper layer 33 is attached to the grooves at two sides of the extrusion wheel, after the scraper passes through, a part of the copper layer at the side wall of each groove is cut off, a second copper layer 34 is formed, and the axial positioning of the extrusion wheel is carried out by adopting the extrusion wheel; the doctor blade dimension B is between the extrusion wheel groove dimension a and the dam block dimension E.
A production method of a large-length special-shaped copper pipe adopts two upward continuous casting pure copper or copper alloy rods as blanks, and heating is not needed; the rotary extrusion wheel with the groove is adopted for driving, the flowing direction of the blank is changed by 90 degrees after the blank contacts with the baffle block, the blank enters the welding chamber through the feeding hole, two blanks in the welding chamber are converged, metallurgical bonding is realized under the action of temperature and pressure, then the special-shaped copper pipe is formed by extruding from a gap between the male die and the female die, continuous extrusion of copper pipes with different shapes and different specifications can be realized by only replacing the male die and the female die, the copper pipe can be formed in one step, drawing is not needed, and the length is not limited; two upward continuous casting anaerobic pure copper or copper alloy rod wire rods are adopted as blanks, copper rods are subjected to online cleaning to remove surface greasy dirt and an oxidation layer, then enter a continuous extrusion machine, are driven by friction force of a rotary extrusion wheel to enter a cavity of a cavity, are welded under the action of high temperature and high pressure in the cavity, are extruded from gaps of a male die and a female die to form copper tubes, and long as continuous copper rods are continuously fed, long-length copper tube products can be obtained; the method comprises the following specific steps: firstly, assembling a cavity 10, a baffle block 11, a male die 12, a female die 13 and a cavity cover 14 together, preheating at a certain temperature, and assembling the extrusion wheel 8, the material pressing wheel 9, a scraper 15, a guide plate 16 and a shoe 17 together according to the position relation shown in figure 2; two copper rods 1 penetrate through a copper rod pay-off rack 2 and a copper rod straightening device 3, an extruder 4 is started, an extrusion wheel 8 is made to rotate, two copper rod blanks are respectively placed between annular grooves 18 on two sides of the extrusion wheel and annular protrusions 21 on two sides of the extrusion wheel, after passing through the extrusion wheel 9, the copper rods 1 are clamped by the annular grooves of the extrusion wheel and rotate together with the extrusion wheel 8, after encountering a baffle block 11, the copper rods enter a cavity 10, enter a cavity 24 along a feeding hole 23, the copper rods 1 are welded under the action of high temperature and high pressure in the cavity 24, after welding, copper tubes are extruded by gaps between inner holes of a male die 12 and a female die 13 to form copper tubes, after the copper tubes are formed, the copper tubes enter a product cooling system 5, and are wound on a winding and arranging machine 7 after passing through a meter counter 6, and the production of large-length special-shaped copper tubes is completed.
Claims (2)
1. A long special-shaped copper pipe production line which is characterized in that: the copper rod pay-off rack (2), copper rod straightening device (3), continuous extrusion machine (4), product cooling system (5), meter recorder (6) and winding and unwinding machine (7) are formed, continuous extrusion machine (4) is including extrusion wheel (8), swager (9), cavity (10), fender material piece (11), terrace die (12), die (13), cavity lid (14), scraper (15), baffle (16) and shoe (17), swager (9) set up on extrusion wheel (8), scraper (15) set up in the outside of extrusion wheel (8), baffle (16) set up between extrusion wheel (8) and shoe (17), cavity (10) set up in shoe (17), terrace die (12) and die (13) are installed in cavity (10), cavity lid (14) are installed on cavity (10), fender material piece (11) set up in the contact surface department of extrusion wheel (8) and cavity (10), be equipped with three annular grooves parallel to each other on the outer periphery of extrusion wheel (8) and annular groove (19) are the annular groove (19) in the cross section plane of annular shape that is perpendicular to each other, the cross section plane of annular groove (19 is perpendicular to each other, the middle annular bulge (20) stretches into the middle annular groove of the extrusion wheel, the annular bulges (21) on two sides respectively stretch into the annular grooves (19) on two sides of the extrusion wheel, two groups of first cambered surfaces (22) which are matched with the outer circumferential surface of the extrusion wheel simultaneously are arranged on the cavity (10), two feeding holes (23) are respectively arranged at the tail ends of the two groups of cambered surfaces, the two feeding holes are connected by a concave cavity (24), a small bulge (25) is arranged at the central part of the concave cavity, a small island central hole (26) is arranged at the center of the small bulge, a rectangular groove (27) is respectively arranged at the position adjacent to the two feeding holes, two strip-shaped bulges (28) and a sinking groove (29) are arranged on the baffle block (11), the width of the baffle block is larger than the width of the strip-shaped bulges, the strip-shaped bulges are larger than the sinking groove width, a plurality of sizing areas (30) are arranged at the discharge end along the extrusion direction, the section of the sizing areas (30) is circular or non-circular, the scraper (15) is of a strip-shaped flat plate structure, two bulges (31) with sharp corners are arranged at one end, two bulge (16) are arranged at one end, and two bulge (16) are matched with the two inner circumferential surfaces (16) of the two arc-shaped bulges (16) on the two sides of the annular bulge (19) and the two arc-shaped bulges are matched with the two arc-shaped structures.
2. A method of producing a long length of profiled copper tubing in a production line according to claim 1, comprising the steps of: A. two copper rods pass through a copper rod pay-off rack and a copper rod straightening device and then enter a continuous extruder; B. starting a continuous extruder to enable the extrusion wheel to rotate, respectively placing two copper rods between annular grooves on two sides of the extrusion wheel and annular protrusions on two sides of the material pressing wheel, clamping the two copper rods by the annular grooves of the extrusion wheel after passing through the material pressing wheel, rotating along with the extrusion wheel, changing the flowing direction after encountering a material blocking block to enter a cavity, then entering a concave cavity along a feeding hole of the cavity, welding the copper rods under the action of high temperature and high pressure in the concave cavity, and extruding a copper pipe by a gap between a male die and an inner hole of a female die in the cavity after welding; C. and after the copper pipe is formed, the copper pipe enters a product cooling system and then is wound on a winding and arranging machine after passing through a meter counter, so that the production of the long special-shaped copper pipe is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710578878.7A CN107185985B (en) | 2017-07-17 | 2017-07-17 | Production line and production method for large-length special-shaped copper pipe |
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| CN201710578878.7A CN107185985B (en) | 2017-07-17 | 2017-07-17 | Production line and production method for large-length special-shaped copper pipe |
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| CN107185985A CN107185985A (en) | 2017-09-22 |
| CN107185985B true CN107185985B (en) | 2023-09-19 |
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| CN112170513A (en) * | 2020-09-27 | 2021-01-05 | 无锡市红年金属制品科技有限公司 | Copper bar processing device capable of continuously extruding |
| CN114769347A (en) * | 2022-05-11 | 2022-07-22 | 上海亚爵电工成套设备制造有限公司 | Ultra-wide continuous extrusion forming copper plate blank processing device |
| CN116128102B (en) * | 2022-12-09 | 2024-01-23 | 常熟中佳新材料有限公司 | Production optimization method and system for special-shaped copper pipe for refrigeration equipment |
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| CN107185985A (en) | 2017-09-22 |
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