Continuous extrusion device and method for copper strip processing

Abstract

The invention provides a continuous extrusion device and method for copper strip machining, and relates to the technical field of copper strip machining devices. The invention discloses a continuous extrusion device for copper strip processing. The continuous extrusion device comprises a workbench erected on a horizontal plane; the multiple first rotating sources are fixedly arranged on the workbench and are arranged in the vertical direction, a driving shaft of each first rotating source is fixedly connected with a supporting rod, the supporting rods are rotationally connected with the workbench, the supporting rods are fixedly sleeved with pressing roller base bodies, every two adjacent pressing roller base bodies extrude a copper strip, and reinforcing ribs are fixedly connected to the inner side walls of the pressing roller base bodies; the height of the reinforcing ribs is gradually increased from the middle to the two ends of the compression roller base body. The device has the effect of improving the extruded precision of the copper strip.

Description

Technical Field

[0001] The invention relates to the technical field of copper strip processing devices, and in particular to a continuous extrusion device and method for copper strip processing. Background Art

[0002] Copper strip extrusion is a processing method that uses the force of rollers to squeeze the copper strip into the desired shape and size by placing it in an extruder. This method can be used to manufacture a variety of copper products, such as wires, cables, connectors, etc. Copper strip extrusion is often used to manufacture high-precision, high-quality copper products with excellent electrical conductivity and good mechanical properties.

[0003] Press rollers are important tools used to squeeze workpieces during metal manufacturing. They are usually made of high-strength alloy steel or other materials and are used to apply pressure on metal plates, bars or tubes to deform, flatten or stretch the material to the desired shape and size.

[0004] For example, in the patent document with the publication number CN103025527B and the subject name of a roll repair method and a roll, a cover is provided on the outer surface of the roller base, a bearing support assembly is inserted in each area of ​​the two ends of the roller base, and the outer side of the bearing support assembly is connected to the inner side of the roller base by bonding. The inner side of the bearing support assembly has been ground to form an inner surface, which is adjacent to the outer ring of the roller bearing, and the inner ring of the roller bearing is arranged on a shaft, and the shaft is used to carry the roll.

[0005] With regard to the above-mentioned related technologies, when the roller squeezes the copper strip below, the roller squeezes the copper strip downward, and at the same time, the roller is subjected to the upward squeezing force of the copper strip. The roller will bend upward due to the squeezing force. Therefore, when the bent and deformed roller processes the copper strip, it will affect the accuracy of the roller in squeezing the copper strip, and have a negative impact on the quality of the finished copper strip. Summary of the invention

[0006] In view of this, the present invention provides a continuous extrusion device and method for copper strip processing, aiming to solve the problem that the roller base will bend and deform upward when subjected to pressure, thereby reducing the roller's extrusion accuracy on the copper strip.

[0007] To solve the above technical problems, in a first aspect, the present invention provides a continuous extrusion device for copper strip processing, comprising a workbench erected on a horizontal plane; a first rotation source, fixedly arranged on the workbench, two first rotation sources are arranged in a vertical direction, and the driving shaft of each first rotation source is fixedly connected to a support rod, and the support rod is rotatably connected to the workbench, and the support rod is fixedly sleeved with a pressure roller base, and the two pressure roller bases extrude the copper strip, and the inner side wall of the pressure roller base is fixedly connected to a reinforcing rib, and the height of the edge of the reinforcing rib from the pressure roller base gradually increases from the middle of the pressure roller base to both ends.

[0008] By adopting the above technical scheme, the roller base extrude the copper strip, and the copper strip generates a reaction extrusion force on the roller base. The reaction force is evenly distributed along the axial direction of the roller base, so that the distribution of the internal pressure of the roller base gradually increases from the middle of the roller base to both ends. The reinforcing ribs are designed with reference to the size of the extrusion force inside the roller base, which improves the supporting and reinforcing effect of the reinforcing ribs on the roller base, reduces the deformation of the roller base, and improves the accuracy of the roller base in extruding the copper strip.

[0009] Optionally, multiple pressing roller bases are arranged along the length direction of the workbench, and the pressing roller base includes a heating roller and a cooling roller respectively arranged at both ends of the workbench, the pressing roller base is filled with heat transfer oil for maintaining the temperature of the pressing roller base, and a temperature control mechanism for controlling the temperature of the heat transfer oil is arranged on the side of the workbench.

[0010] By adopting the above technical scheme, the height of the reinforcing ribs gradually increases from the middle of the roller base to the two ends, so that the contact area between the reinforcing ribs and the heat transfer oil gradually increases from the middle of the roller base to the two ends, thereby increasing the power of the heat transfer oil at the two ends of the roller base to transfer heat to the roller base, and improving the uniformity of heating of the roller base along the axial direction.

[0011] Optionally, the gap between the support rod and the pressure roller base is an oil delivery cavity, a receiving cavity for circulating heat transfer oil is opened in the support rod, a material delivery hole is opened on the side wall of the support rod, and the receiving cavity and the oil delivery cavity are both connected to the interior of the material delivery hole.

[0012] Optionally, a material resisting tube is slidably connected in the accommodating cavity, the material resisting tube is provided with a flow control hole that can overlap with the material feeding hole, the material resisting tube is threadedly connected to a transmission screw, and a second rotation source is fixedly installed on the side wall of the pressure roller base, and the second rotation source is fixedly connected to the transmission screw.

[0013] By adopting the above technical solution, when the temperature on one side of the roller base is low, the material pipe is moved to increase the overlapping area of ​​the flow control hole and the material delivery hole on the side of the roller base with low temperature, thereby increasing the amount of heat transfer oil flowing to the side of the roller base with low temperature, further improving the uniformity of the axial temperature distribution of the roller base. Optionally, the temperature control mechanism includes an eddy current rod box arranged on the side of the workbench, the eddy current rod box is fixedly connected to a heat exchanger and a cold exchanger, the heat exchanger is fixedly connected to a first oil pipe for conveying heat transfer oil to the heating roller, the heating roller is fixedly connected to a first return pipe for conveying heat transfer oil to the heat exchanger, the cold exchanger is fixedly connected to a second oil pipe for conveying heat transfer oil to the heating roller, and the cooling roller is fixedly connected to a second return pipe for conveying heat transfer oil to the cold exchanger.

[0014] Optionally, temperature sensors are fixedly mounted on the side walls at both ends of the pressure roller base.

[0015] By adopting the above technical solution, the temperature sensor detects the temperature at both ends of the roller base, and feeds back the temperature difference information on both sides of the roller base, thereby controlling the second rotation source to drive the material-blocking tube to move.

[0016] Optionally, two end fixing sleeves of the outer side wall of the pressing roller base are provided with limiting rings, and the limiting rings abut against the side wall of the copper belt.

[0017] By adopting the above technical solution, the limiting ring abuts against the side wall of the copper strip, thereby adjusting the position of the copper strip along the axial direction of the pressing roller base and reducing the offset distance of the copper strip when it is squeezed.

[0018] In a second aspect, the present invention provides a continuous extrusion method for copper strip processing, which is applied to a continuous extrusion device for copper strip processing described in the first aspect, and the extrusion method is: S1, the vortex rod box outputs hot air flow and cold air flow, the hot air flow heats the heat transfer oil in the heat exchanger, and the heat exchanger transports the heat transfer oil into the heating roller; S2, a cold air flow cools the heat transfer oil in the cold exchanger, and the cold exchanger delivers the heat transfer oil to the cooling roller; S3, the first rotation source drives the pressure roller base to rotate, and the two adjacent heating rollers in the vertical direction heat and extrude the copper strip, the heating roller transports the copper strip to the cooling roller, and then the cooling roller extrude and cool the copper strip to shape it.

[0019] By adopting the above technical solution, the heating roller heats and softens the copper strip when extruding it, making it easier for the copper strip to be extruded and deformed. After the copper strip is extruded by the heating roller, the cooling roller cools and shapes the copper strip, thereby improving the hardness of the copper strip product.

[0020] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. The roller base extrude the copper strip, and the copper strip generates a reaction extrusion force on the roller base. The reaction force is radially toward the roller base, and the reaction force is evenly distributed along the axial direction of the roller base. The distribution of the pressure inside the roller base gradually increases from the middle of the roller base to both ends. The reinforcing ribs are designed with reference to the size of the extrusion force inside the roller base, which improves the supporting and reinforcing effect of the reinforcing ribs on the roller base, reduces the deformation of the roller base, and improves the accuracy of the roller base in extruding the copper strip.

[0021] 2. The height of the reinforcing ribs gradually increases from the middle of the roller base to both ends, so that the contact area between the reinforcing ribs and the heat transfer oil gradually increases from the middle of the roller base to both ends, increasing the power of the heat transfer oil at both ends of the roller base to transfer heat to the roller base, and improving the uniformity of the heating of the roller base along the axial direction. In addition to supporting the roller base according to the internal pressure of the roller base, the reinforcing ribs are also conducive to uniform heating of the roller base along the axial direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 A cross-sectional view of the internal structure of a pressure roller base body according to an embodiment of the present invention; Figure 3 A schematic diagram of a reinforcing rib according to an embodiment of the present invention; Figure 4 For the embodiment of the present invention Figure 2 A partial enlarged view of the middle area A; Figure 5 It is a schematic structural diagram of the first oil delivery pipe and the first return pipe according to an embodiment of the present invention.

[0023] Explanation of the accompanying drawings: 1. workbench; 2. first rotation source; 3. support rod; 31. accommodating chamber; 32. feed hole; 4. roller base; 41. reinforcing rib; 42. heating roller; 43. cooling roller; 44. limiting ring; 45. oil delivery chamber; 6. temperature control mechanism; 61. eddy current rod box; 62. heat exchanger; 63. cold exchanger; 64. first oil delivery pipe; 65. first return pipe; 66. second oil delivery pipe; 67. second return pipe; 7. material resistance pipe; 71. flow control hole; 72. transmission screw; 73. second rotation source; 8. temperature sensor. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 5 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0025] This embodiment provides a continuous extrusion device for copper strip processing, referring to Figure 1 , Figure 2 and Figure 3A continuous extrusion device for copper strip processing includes a workbench 1, and two first rotation sources 2 are fixedly installed on the side wall of the workbench 1 in the vertical direction. The driving shaft of each first rotation source 2 is fixedly connected to a support rod 3, and the support rod 3 is rotatably connected to the workbench 1. A roller base 4 is fixedly sleeved on the support rod 3, and the copper strip passes between the two roller bases 4. A plurality of reinforcing ribs 41 are fixedly connected to the inner side wall of the roller base 4 along the circumferential direction, and the height of the edge of the reinforcing rib 41 from the roller base 4 gradually increases from the middle of the roller base 4 to both ends.

[0026] The roller base 4 extrude the copper strip, and the copper strip generates a reaction extrusion force on the roller base 4. The reaction force is radially toward the inside of the roller base 4, and the reaction force is evenly distributed along the axial direction of the roller base 4. The distribution of the internal pressure of the roller base 4 gradually increases from the middle of the roller base 4 to both ends. The reinforcing ribs 41 are designed with reference to the size of the internal extrusion force of the roller base 4, which improves the supporting and reinforcing effect of the reinforcing ribs 41 on the roller base 4, reduces the deformation of the roller base 4, and improves the accuracy of the roller base 4 in extruding the copper strip.

[0027] Reference Figure 1 and Figure 2 , a plurality of roller base bodies 4 are arranged along the length direction of the workbench 1, and the roller base body 4 includes a heating roller 42 and a cooling roller 43 respectively arranged at both ends of the workbench 1, and the copper strip is transported from the heating roller 42 to the cooling roller 43. The roller base body 4 is filled with heat transfer oil for maintaining the temperature of the roller base body 4, and the heating roller 42 and the cooling roller 43 have the same structure, and the temperature of the heat transfer oil inside the heating roller 42 and the cooling roller 43 is different. The specific heat transfer oil can be silicone oil, mineral oil or synthetic oil. A temperature control mechanism 6 for controlling the temperature of the heat transfer oil is arranged on the side of the workbench 1.

[0028] Reference Figure 1 and Figure 2 The gap between the support rod 3 and the roller base 4 is an oil delivery cavity 45. A receiving cavity 31 for circulating heat transfer oil is provided in the support rod 3. A plurality of material delivery holes 32 for delivering the heat transfer oil in the receiving cavity 31 to the roller base 4 are provided on the side wall of the support rod 3. The material delivery holes 32 are axially arranged on both sides of the middle section of the support rod 3. The material delivery holes 32 on each side are inclined away from one end of the receiving cavity 31 and close to the end of the support rod 3. The receiving cavity 31 and the oil delivery cavity 45 are both connected to the inside of the material delivery hole 32.

[0029] Extrusion causes work hardening of the material, which will limit the further deformation of the material. Therefore, the heating roller 42 heats and softens the copper strip when extruding it, making it easier for the copper strip to be extruded and deformed. After the copper strip is extruded by the heating roller 42, the cooling roller 43 cools and shapes the copper strip, while increasing the hardness of the copper strip product. The temperature of the heating roller 42 and the cooling roller 43 is controlled by heat-conducting oil, which increases the uniformity of heat transfer between the heating roller 42 and the cooling roller 43, thereby increasing the uniformity of heating the copper strip.

[0030] When in the heating roller 42, the heat transfer oil flows from the middle of the roller base 4 to both sides through the feed hole 32. The heat transfer oil transfers heat to the roller base 4 during the flow process, so that the heat of the heat transfer oil in the middle of the roller base 4 is greater than the heat of the heat transfer oil at both ends of the roller base 4. The height of the reinforcing rib 41 gradually increases from the middle of the roller base 4 to both ends, so that the contact area between the reinforcing rib 41 and the heat transfer oil gradually increases from the middle of the roller base 4 to both ends, increasing the power of the heat transfer oil at both ends of the roller base 4 to transfer heat to the roller base 4 through the reinforcing rib 41, improving the uniformity of the heating of the roller base 4 along the axial direction, which is conducive to the uniform heating of the copper strip, reducing the difficulty of the roller base 4 to deform the copper strip, and improving the efficiency of the roller base 4 to extrude the copper strip. Therefore, the reinforcing rib 41 not only supports the roller base 4 according to the size of the internal pressure of the roller base 4, but also facilitates the uniform heating of the roller base 4 along the axial direction. The same applies to the cooling roller 43.

[0031] Reference Figure 1 , Figure 2 and Figure 4 The side walls at both ends of the roller base 4 are respectively fixedly mounted with temperature sensors 8. A material-resisting pipe 7 is slidably connected in the accommodating cavity 31. The material-resisting pipe 7 is provided with a flow control hole 71 that can overlap with the material feeding hole 32. The material-resisting pipe 7 is threadedly connected with a transmission screw 72. A second rotation source 73 is fixedly mounted on the side wall of the roller base 4. The second rotation source 73 is fixedly connected to the transmission screw 72.

[0032] The second rotation source 73 drives the transmission screw 72 to rotate, thereby driving the material stopper 7 to move along the axial direction of the accommodating cavity 31, and adjusts the position of the flow control hole 71 relative to the material feeding hole 32 according to the temperature difference of the temperature sensors 8 at both ends of the roller base 4. In the heating roller 42, when the temperature on one side of the roller base 4 is low, the second rotation source 73 drives the material stopper 7 to move closer to the side of the roller base 4 with a low temperature through the transmission screw 72, increasing the overlapping area of ​​the flow control hole 71 and the material feeding hole 32 on the side of the roller base 4 with a low temperature, thereby increasing the amount of heat transfer oil flowing to the side of the roller base 4 with a low temperature, and further improving the uniformity of the temperature distribution of the roller base 4 along the axial direction. The same applies to the cooling roller 43.

[0033] Reference Figure 1 , Figure 2 and Figure 5The temperature control mechanism 6 includes an eddy current rod box 61, a heat exchanger 62, a cold exchanger 63, a first oil delivery pipe 64, a first return pipe 65, a second oil delivery pipe 66 and a second return pipe 67. The eddy current rod box 61 is fixedly arranged on the side of the workbench 1. The eddy current rod inside the eddy current rod box 61 can separate the hot air flow and the cold air flow at the same time. The heat exchanger 62 and the cold exchanger 63 are both connected to the inside of the eddy current rod box 61. The hot air flow flows into the heat exchanger 62, and the cold air flow flows into the cold exchanger 63. The heat exchanger 62 and the accommodating chamber 31 in the heating roller 42 are respectively connected to the two ends of the first oil delivery pipe 64, and the heat exchanger 62 and the oil delivery chamber 45 in the heating roller 42 are respectively connected to the two ends of the first return pipe 65. The heat transfer oil in the heat exchanger 62 circulates through the heat exchanger 62, the first oil delivery pipe 64, the accommodating chamber 31 in the heating roller 42, the oil delivery chamber 45 in the heating roller 42 and the first return pipe 65. The cold exchanger 63 and the accommodating chamber 31 in the cooling roller 43 are respectively connected to the two ends of the second oil delivery pipe 66, and the cold exchanger 63 and the oil delivery chamber 45 in the cooling roller 43 are respectively connected to the two ends of the second return pipe 67. The heat transfer oil in the cold exchanger 63 circulates through the cold exchanger 63, the second oil delivery pipe 66, the accommodating chamber 31 in the cooling roller 43, the oil delivery chamber 45 in the cooling roller 43 and the second return pipe 67.

[0034] Reference Figure 5 The two ends of the outer wall of the roller base 4 are fixedly sleeved with limit rings 44, which abut against the side wall of the copper strip, thereby adjusting the axial position of the copper strip along the roller base 4 and reducing the offset distance of the copper strip when it is squeezed.

[0035] The implementation principle of a continuous extrusion device for copper strip processing in an embodiment of the present invention is as follows: the vortex rod box 61 outputs hot air flow and cold air flow, the hot air flow heats the heat transfer oil in the heat exchanger 62, and the heat transfer oil in the heat exchanger 62 is transported to the heating roller 42 through the first oil delivery pipe 64. The cold air flow cools the heat transfer oil in the cold exchanger 63, and the heat transfer oil in the cold exchanger 63 is transported to the cooling roller 43 through the second oil delivery pipe 66. The first rotation source 2 drives the pressure roller base 4 to rotate, and the two adjacent heating rollers 42 in the vertical direction heat and extrude the copper strip, the heating roller 42 transports the copper strip to the cooling roller 43, and then the cooling roller 43 extrude and cool the copper strip to shape. In a second aspect, an embodiment of the present invention provides a continuous extrusion method for copper strip processing, which is applied to a continuous extrusion device for copper strip processing in the first aspect, and the extrusion method is: S1, the vortex rod box 61 outputs hot air flow and cold air flow, the hot air flow heats the heat transfer oil in the heat exchanger 62, and the heat exchanger 62 transports the heat transfer oil to the heating roller 42; S2, the cold air flow cools the heat transfer oil in the cold exchanger 63, and the cold exchanger 63 transports the heat transfer oil to the cooling roller 43; S3, the first rotation source 2 drives the pressure roller base 4 to rotate, and the two adjacent heating rollers 42 in the vertical direction heat and extrude the copper strip, the heating roller 42 transports the copper strip to the cooling roller 43, and then the cooling roller 43 extrude and cool the copper strip to shape.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A continuous extrusion device for copper strip processing, comprising a workbench (1) erected on a horizontal plane, characterized in that: Also includes: A first rotation source (2) is fixedly arranged on the workbench (1), two first rotation sources (2) are arranged in the vertical direction, the driving shaft of each first rotation source (2) is fixedly connected to a support rod (3), the support rod (3) is rotatably connected to the workbench (1), the support rod (3) is fixedly sleeved with a pressure roller base (4), the two pressure roller bases (4) extrude the copper strip, the inner side wall of the pressure roller base (4) is fixedly connected to a reinforcing rib (41), and the height of the edge of the reinforcing rib (41) from the pressure roller base (4) gradually increases from the middle of the pressure roller base (4) to both ends.

2. A continuous extrusion device for copper strip processing according to claim 1, characterized in that: The pressure roller base (4) is arranged in plurality along the length direction of the workbench (1), and the pressure roller base (4) comprises a heating roller (42) and a cooling roller (43) respectively arranged at two ends of the workbench (1). The pressure roller base (4) is filled with heat transfer oil for maintaining the temperature of the pressure roller base (4), and a temperature control mechanism (6) for controlling the temperature of the heat transfer oil is arranged on the side of the workbench (1).

3. A continuous extrusion device for copper strip processing according to claim 2, characterized in that: The gap between the support rod (3) and the pressure roller base (4) is an oil delivery cavity (45), a receiving cavity (31) for circulating heat transfer oil is provided in the support rod (3), a material delivery hole (32) is provided on the side wall of the support rod (3), and both the receiving cavity (31) and the oil delivery cavity (45) are connected to the interior of the material delivery hole (32).

4. A continuous extrusion device for copper strip processing according to claim 3, characterized in that: A material-resisting tube (7) is slidably connected in the accommodating cavity (31), the material-resisting tube (7) is provided with a flow control hole (71) that can overlap with the material delivery hole (32), the material-resisting tube (7) is threadedly connected to a transmission screw (72), a second rotation source (73) is fixedly mounted on the side wall of the pressure roller base (4), and the second rotation source (73) is fixedly connected to the transmission screw (72).

5. A continuous extrusion device for copper strip processing according to claim 3, characterized in that: The temperature control mechanism (6) comprises an eddy current rod box (61) arranged on the side of the workbench (1); the eddy current rod box (61) is fixedly connected to a heat exchanger (62) and a cold exchanger (63); the heat exchanger (62) is fixedly connected to a first oil delivery pipe (64) for delivering heat-conducting oil to the heating roller (42); the heating roller (42) is fixedly connected to a first return pipe (65) for delivering heat-conducting oil to the heat exchanger (62); the cold exchanger (63) is fixedly connected to a second oil delivery pipe (66) for delivering heat-conducting oil to the heating roller (42); and the cooling roller (43) is fixedly connected to a second return pipe (67) for delivering heat-conducting oil to the cold exchanger (63).

6. A continuous extrusion device for copper strip processing according to claim 1, characterized in that: Temperature sensors (8) are fixedly mounted on the side walls at both ends of the pressure roller base (4).

7. A continuous extrusion device for copper strip processing according to claim 1, characterized in that: Limiting rings (44) are fixedly sleeved at both ends of the outer side wall of the pressing roller base (4), and the limiting rings (44) abut against the side wall of the copper strip.

8. A continuous extrusion method for copper strip processing, applied to a continuous extrusion device for copper strip processing according to claim 5, characterized in that: include: S1, the vortex rod box (61) outputs hot air flow and cold air flow, the hot air flow heats the heat transfer oil in the heat exchanger (62), and the heat exchanger (62) transports the heat transfer oil into the heating roller (42); S2, a cold air flow cools the heat transfer oil in the cold exchanger (63), and the cold exchanger (63) transports the heat transfer oil into the cooling roller (43); S3, the first rotation source (2) drives the pressure roller base (4) to rotate, and the two heating rollers (42) adjacent to each other in the vertical direction heat and extrude the copper strip, and the heating roller (42) transports the copper strip to the cooling roller (43), and then the cooling roller (43) extrude and cool the copper strip to shape it.

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