An oxidation resistant copper wire annealing apparatus and method

Abstract

This invention relates to the field of copper wire processing technology, and in particular to an anti-oxidation copper wire annealing apparatus and method. An anti-oxidation copper wire annealing apparatus is used to anneal copper wire wound on a spool. It includes an outer spool, a bracket, multiple trays, and multiple rubber pillars. The outer spool is vertically arranged, and multiple partition rings are provided inside the outer spool. The partition rings and trays are arranged sequentially in a vertical direction. Each rubber pillar is positioned between two adjacent trays, and the spool is fitted onto the rubber pillar. The trays, rubber pillars, and partition rings are coaxial. Each partition ring corresponds to one tray, and the partition ring can contact the corresponding tray. Through the coordinated arrangement of the partition rings and multiple trays, adjacent spools are separated, each spool is in a separate small space, the upward path of the hot airflow in each small space is shortened, and the copper wire on each spool receives a relatively uniform annealing temperature, thus improving the annealing quality of copper wire in the same batch.

Description

Technical Field

[0001] This invention relates to the field of copper wire processing technology, and in particular to an anti-oxidation copper wire annealing apparatus and method. Background Technology

[0002] Copper wire is widely used in the manufacture of electrical wires, cables, and other products, and is an indispensable material in modern industry. During the processing of copper wire, annealing is typically required to reduce hardness, eliminate residual stress, reduce deformation and cracking tendency, and refine the grain size.

[0003] Traditional annealing methods typically involve heating copper wires in a furnace. To improve annealing efficiency, the furnace is usually deepened to accommodate more copper wires. However, due to the upward diffusion of hot air, the temperature at the top of the furnace is significantly higher than at the bottom, resulting in uneven heating of the copper wires at different locations within the furnace. This leads to inconsistent annealing quality within the same batch of copper wires, thus reducing the overall annealing quality of the copper wires. Summary of the Invention

[0004] Therefore, it is necessary to provide an oxidation-resistant copper wire annealing device and method to address the problem of inconsistent annealing quality of copper wires in current annealing furnaces.

[0005] The above objectives are achieved through the following technical solutions:

[0006] An anti-oxidation copper wire annealing device.

[0007] This device is used for annealing copper wire wound on a bobbin. It includes an outer bobbin, end caps, a bracket, a negative pressure mechanism, and a heating mechanism. The outer bobbin is vertically oriented and has a bottom but no top. The end caps are movably positioned above the outer bobbin to separate its interior from its exterior. The bracket includes multiple trays and multiple rubber pillars. The trays are arranged vertically in sequence, with the axis of each tray extending vertically. There is a gap between adjacent trays, and a gap is also provided between each tray and the inner wall of the outer bobbin. The rubber pillars are arranged vertically in sequence, with each pillar positioned between adjacent trays. The rubber column can connect to two adjacent trays. The spool is sleeved on the rubber column. The rubber column has an air chamber inside. When the pressure inside and outside the rubber column is different, the rubber column can expand or contract in its radial direction. Multiple partition rings are fixedly installed on the inner wall of the outer cylinder. The partition rings are arranged vertically and are sleeved on the outside of the tray. The partition rings divide the inside of the outer cylinder into multiple small spaces arranged vertically. Each spool is located in a small space. The tray, rubber column and partition rings are coaxial. Each partition ring corresponds to one tray and each partition ring can contact the corresponding tray.

[0008] The anti-oxidation copper wire annealing device has a first state and a second state. In the first state, there is a gap between the tray and the corresponding partition ring, multiple small spaces are connected, and the pressure inside and outside the rubber column is the same. In the second state, the tray is in contact with the corresponding partition ring, multiple small spaces are separated from each other, the pressure inside the rubber column is greater than the pressure outside the rubber column, and the rubber column expands in its radial direction and comes into contact with the wire drum.

[0009] The negative pressure mechanism is located on the outside of the outer cylinder and is used to extract the gas inside the outer cylinder; the heating mechanism is located on the inner wall of the outer cylinder and is used to heat the copper wire inside the outer cylinder.

[0010] Preferably, the rubber column is made of borosilicate rubber.

[0011] Preferably, the diameters of the multiple trays decrease sequentially from top to bottom, and the inner diameters of the multiple dividing rings decrease sequentially from top to bottom.

[0012] Preferably, a first inclined surface is formed on the circumferential surface of each tray, and the first inclined surface gradually approaches the center of the tray from top to bottom; a second inclined surface is formed on the inner circumferential surface of each dividing ring, and the second inclined surface gradually approaches the outer circumferential surface of the dividing ring from bottom to top, and the second inclined surface on each dividing ring abuts against the first inclined surface on the corresponding tray.

[0013] Preferably, a counterweight is provided at the bottom of the lowest tray, and the counterweight contacts the bottom of the outer cylinder.

[0014] Preferably, the wall thickness of the multiple rubber columns increases sequentially from top to bottom, and an air passage is provided at the bottom of the outer cylinder, through which the negative pressure mechanism communicates with the interior of the outer cylinder.

[0015] Preferably, an electromagnetic valve is installed in the air passage to control the pressure changes inside the outer cylinder.

[0016] Preferably, each rubber column is provided with multiple reinforcing ribs, the reinforcing ribs are elastic, each reinforcing rib extends along the axial direction of the rubber column, and the multiple reinforcing ribs are evenly distributed around the circumference of the rubber column.

[0017] Preferably, the oxidation-resistant copper wire annealing apparatus also includes a support for controlling the movement of the end cap in both vertical and horizontal directions.

[0018] An oxidation-resistant copper wire annealing method includes the following steps:

[0019] S1, place a spool of copper wire on two adjacent trays.

[0020] S2, connect two adjacent trays with rubber posts, and place each spool on the corresponding rubber post.

[0021] S3, place the bracket containing the spool inside the outer cylinder, and then cover the outer cylinder with the end cap.

[0022] S4, activate the negative pressure mechanism to draw a vacuum from the inside of the outer cylinder.

[0023] S5, activate the heating mechanism to heat the inside of the outer cylinder.

[0024] The beneficial effects of this invention are as follows: Through the combined arrangement of multiple trays and rubber columns, the outer cylinder can accommodate multiple wire spools, enabling annealing of multiple copper wires; through the combined arrangement of the partition ring and multiple trays, adjacent wire spools are separated, each wire spool is in a separate small space, the upward path of the hot airflow in each small space is shortened, and the annealing temperature of the copper wires on each wire spool is relatively consistent, improving the annealing quality of the same batch of copper wires in the outer cylinder; the rubber columns have air chambers, and by drawing gas from the inside of the outer cylinder through a negative pressure mechanism, the rubber columns expand. The expanded rubber columns contact the wire spools and push the wire spools to move, making the wire spools and rubber columns coaxial, and ensuring a consistent distance between the copper wires on the wire spools and the inner wall of the outer cylinder, thus improving the consistency of the annealing degree of the copper wires on the wire spools. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an anti-oxidation copper wire annealing device provided in an embodiment of the present invention;

[0026] Figure 2 This is a front view of an anti-oxidation copper wire annealing apparatus provided in an embodiment of the present invention;

[0027] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0028] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of a bracket for an anti-oxidation copper wire annealing device according to an embodiment of the present invention.

[0030] The components are as follows: 100, outer cylinder; 101, end cap; 102, tray; 103, rubber column; 104, air chamber; 105, spool; 106, separator ring; 107, counterweight; 108, lifting lug; 109, air passage; 110, solenoid valve; 111, rotating shaft; 112, fixing plate; 113, motor; 114, threaded rod; 115, heating mechanism. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0032] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] like Figures 1 to 5As shown, this embodiment of the invention provides an anti-oxidation copper wire annealing device for annealing copper wire wound on a spool 105. The device includes an outer spool 100, an end cap 101, a bracket, a negative pressure mechanism, and a heating mechanism 115. The outer spool 100 is vertically arranged and has a bottom but no top. The end cap 101 is movably disposed above the outer spool 100 to separate the interior and exterior of the outer spool 100. The bracket includes multiple trays 102 and multiple rubber pillars 103. The multiple trays 102 are arranged sequentially in a vertical direction, with the axis of each tray 102 extending vertically. A gap is provided between adjacent trays 102, and a gap is also provided between each tray 102 and the inner wall of the outer spool 100. The multiple rubber pillars 103 are arranged sequentially in a vertical direction, and each rubber pillar... A rubber column 103 is positioned between two adjacent trays 102. The rubber column 103 can be bolted to the two adjacent trays 102. A bobbin 105 is fitted onto the rubber column 103. The rubber column 103 has an air chamber 104 inside. When the pressure inside the rubber column 103 is inconsistent with the external pressure, the rubber column 103 can expand or contract in its radial direction. The bobbin 105 is fitted onto the rubber column 103. A plurality of partition rings 106 are provided inside the outer cylinder 100. The partition rings 106 are arranged sequentially in the vertical direction inside the outer cylinder 100 and fitted onto the outside of the tray 102. The tray 102, the rubber column 103, and the partition rings 106 are coaxial. Each partition ring 106 corresponds to one tray 102, and each partition ring 106 can contact the corresponding tray 102.

[0035] The anti-oxidation copper wire annealing device has a first state and a second state. In the first state, there is a gap between the tray 102 and the corresponding partition ring 106, and the internal pressure of the rubber column 103 is the same as the external pressure of the rubber column 103. In the second state, the tray 102 abuts against the corresponding partition ring 106, the rubber column 103 expands in its radial direction and abuts against the wire drum 105, and the internal pressure of the rubber column 103 is greater than the external pressure of the rubber column 103.

[0036] The negative pressure mechanism is located outside the outer cylinder 100 and is used to extract the gas inside the outer cylinder 100; the heating mechanism 115 is located on the inner wall of the outer cylinder 100 and is used to heat the copper wire inside the outer cylinder 100.

[0037] Through the coordinated arrangement of multiple trays 102 and rubber pillars 103, the outer cylinder 100 can accommodate multiple wire spools 105, enabling the annealing of multiple copper wires. In the first state, the anti-oxidation copper wire annealing device has a vertical gap between each separator ring 106 and its corresponding tray 102, and the multiple small spaces inside the outer cylinder 100 are interconnected. When the anti-oxidation copper wire annealing device transitions to the second state, the rubber pillars 103 expand, their vertical length shortens, and the gap between each separator ring 106 and its corresponding tray 102 narrows until the separator ring 106 contacts its corresponding tray 102. At this point, two adjacent... The small spaces are partitioned, shortening the upward path of the hot airflow within each small space. This ensures that the copper wires on each spool 105 experience a relatively consistent annealing temperature, reducing the temperature difference among all the copper wires inside the outer spool 100 and improving the annealing quality of copper wires in the same batch. The rubber column 103 has an air chamber 104. By drawing gas from inside the outer spool 100 through a negative pressure mechanism, the rubber column 103 expands. The expanded rubber column 103 contacts the spool 105 and pushes the spool 105 to move, making the spool 105 and the rubber column 103 coaxial. The distance between the copper wires on the spool 105 and the inner wall of the outer spool 100 is consistent, improving the consistency of the annealing degree of the copper wires on the spool 105.

[0038] In this embodiment, borosilicate rubber is used for the rubber column 103. The annealing temperature range for copper wire is generally between 300°C and 800°C, with the specific temperature depending on the composition, size, shape, and desired performance of the copper wire. Borosilicate rubber has a heat resistance range of -40°C to 410°C, making it suitable for the annealing environments of some copper wires.

[0039] In this embodiment, the diameters of the multiple trays 102 decrease sequentially from top to bottom, and the inner diameters of the multiple dividing rings decrease sequentially from top to bottom. The uppermost tray 102 is provided with a lifting lug 108. When placing the bracket, the tray 102 and the rubber column 103 can be lifted by the lifting lug 108 and placed into the outer cylinder 100. The smallest tray 102 on the bracket enters the outer cylinder 100 first. The distance between the smallest tray 102 and the dividing ring with the largest inner diameter is large, and the two are not likely to collide.

[0040] In this embodiment, a first inclined surface is formed on the circumferential surface of each tray 102, which gradually approaches the center of the tray 102 from top to bottom; a second inclined surface is formed on the inner circumferential surface of each dividing ring, which gradually approaches the outer circumferential surface of the dividing ring from bottom to top. The second inclined surface on each dividing ring 106 abuts against the first inclined surface on the corresponding tray 102. After the bracket is placed into the outer cylinder 100, the bracket is in the first state, and the dividing ring 106 is located below the corresponding tray 102. After the vacuum is drawn inside the outer cylinder 100, the tray 102 will change from the first state to the second state, and the tray 102 will abut against the corresponding dividing ring 106, which supports the tray 102.

[0041] In this embodiment, a counterweight 107 is provided at the bottom of the lowest tray 102. The counterweight 107 is in contact with the bottom of the outer cylinder 100. When the negative pressure mechanism causes the bracket to change from the first state to the second state, the lowest tray 102 remains stationary, and the tray 102 above each rubber column 103 moves downward and approaches the corresponding dividing ring 106.

[0042] In this embodiment, the wall thickness of the multiple rubber columns 103 increases sequentially from top to bottom. An air passage 109 is provided at the bottom of the outer cylinder 100. The negative pressure mechanism communicates with the interior of the outer cylinder 100 through the air passage 109. The load-bearing capacity of the rubber columns 103 increases sequentially from top to bottom, overcoming the weight of the tray 102, the spool 105, and the copper wire above them. This ensures that when the bracket is in the first state, there is a gap between the separating ring 106 and the corresponding tray 102. During the transition from the first state to the second state, each rubber column 103 expands simultaneously, but the expanded size is inconsistent, causing each separating ring 106 to contact the corresponding tray 102 almost simultaneously. When the bracket is in the second state, the pressure within the enclosed small space where each spool 105 is located is basically consistent, improving the consistency of annealing for copper wires in the same batch.

[0043] In this embodiment, a solenoid valve 110 is provided in the air passage 109 to control the pressure change inside the outer cylinder 100. The solenoid valve 110 is an ultra-high temperature solenoid valve to prevent the high temperature inside the outer cylinder 100 from affecting it. When evacuating the inside of the outer cylinder 100, the solenoid valve 110 is opened and the vacuum is drawn by the negative pressure mechanism. After the vacuum is completed, the solenoid valve 110 is closed to ensure the pressure inside the outer cylinder 100. In addition, after annealing, the solenoid valve 110 can be opened to connect the inside of the outer cylinder 100 with the outside and gradually restore it to normal pressure.

[0044] In this embodiment, each rubber column 103 is provided with multiple reinforcing ribs. The reinforcing ribs are elastic, each reinforcing rib extends along the axial direction of the rubber column 103, and the multiple reinforcing ribs are evenly distributed around the circumference of the rubber column 103. The reinforcing ribs can bend along the radial direction of the rubber column 103, which can improve the strength of the rubber column 103.

[0045] In this embodiment, an anti-oxidation copper wire annealing device further includes a bracket for controlling the movement of the end cap 101 in the vertical and horizontal directions. The bracket includes a rotating shaft 111, a fixing plate 112, a motor 113, and a threaded rod 114. The rotating shaft 111 is rotatably mounted on the outer cylinder 100 and extends in the vertical direction. The fixing plate 112 is fixedly mounted on the rotating shaft 111. The motor 113 is fixedly mounted on the fixing plate 112. The end of the threaded rod 114 is fixedly connected to the output end of the motor 113 and extends in the vertical direction. The end cap 101 is slidably mounted on the fixing plate 112 in the vertical direction, and the threaded rod 114 is threadedly connected to the end cap 101. Rotation of the threaded rod 114 can drive the end cap 101 to slide in the vertical direction on the fixing plate 112.

[0046] The working principle of the anti-oxidation copper wire annealing device and method provided in the above embodiments is as follows:

[0047] First, place a rubber column 103 with the largest wall thickness on the smallest diameter tray 102, and then connect the two with bolts. Next, place a spool 105 with copper wire wound on the tray 102, and fit the spool 105 onto the rubber column 103. Then, place a tray 102 with a slightly larger diameter on the rubber column 103 and connect the two together with bolts. In this way, the trays 102 and rubber columns 103 are stacked, with one spool 105 placed on each tray 102. The diameter of the multiple trays 102 increases from bottom to top, and the thickness of the multiple rubber columns 103 decreases from bottom to top.

[0048] Next, multiple trays 102, multiple rubber columns 103, and multiple spools 105 are lifted together and placed inside the outer cylinder 100 using the lifting lugs 108 on the uppermost tray 102. Then, the fixing plate 112 is rotated, and the fixing plate 112 rotates around the rotating shaft 111. The fixing plate 112 also moves the end cover 101 together until the end cover 101 is directly above the outer cylinder 100. At this time, the motor 113 is started. The rotation of the motor 113 drives the threaded rod 114 to rotate. The rotation of the threaded rod 114 drives the end cover 101 to move downward on the fixing plate 112 until the end cover 101 contacts the outer cylinder 100 and completely separates the inside and outside of the outer cylinder 100.

[0049] Then, the solenoid valve 110 is opened and the negative pressure mechanism is activated. The negative pressure mechanism draws gas from the outer cylinder 100 through the air passage 109, reducing the pressure inside the outer cylinder 100. The pressure inside the air chamber 104 is greater than the pressure inside the outer cylinder 100, causing the rubber column 103 to expand. The distance between two adjacent trays 102 decreases, and the tray 102 above the bottommost tray 102 gradually moves closer to its corresponding separating ring 106 until it comes into contact with the corresponding separating ring 106. At this time, each separating ring 106 and its corresponding tray 102 separate multiple coils 105, and each coil 105 is located in an independent cavity. As the rubber column 103 expands, it pushes the corresponding coil 105 to move along the radial direction of the tray 102, so that the coil 105 that is not in the middle of the tray 102 is in the middle of the tray 102. In this way, the distance between the copper wire on the coil 105 and the heating mechanism 115 on the inner wall of the outer cylinder 100 is basically the same, and the annealing of the copper wire on the same coil 105 is more uniform.

[0050] After the negative pressure extraction is completed, the negative pressure mechanism and solenoid valve 110 are closed to make the ambient pressure of each wire drum 105 in the outer cylinder 100 as consistent as possible; then the heating mechanism 115 is started, and the heating mechanism 115 causes the temperature inside the outer cylinder 100 to rise. The temperature inside the outer cylinder 100 gradually reaches the annealing temperature required for the copper wire, while the heat resistance temperature of the rubber column 103 is greater than the annealing temperature of the copper wire, so the rubber column 103 can work normally.

[0051] After the copper wire annealing is completed, the solenoid valve 110 is opened. The pressure in the lowest independent small cavity inside the outer cylinder 100 increases, and the pressure in the rubber column 103 located in the cavity also gradually increases. The rubber column 103 gradually recovers, and at the same time, the rubber column 103 pushes the tray 102 above it to move upward. After moving, the tray 102 will separate from the corresponding partition ring 106, and multiple independent small spaces will gradually connect. Finally, the pressure inside the outer cylinder 100 is consistent with the pressure inside the air chamber 104 again.

[0052] Finally, open the end cover 101, take out the bracket, separate the tray 102 from the rubber post 103 in the bracket, and replace the spool 105.

[0053] This invention also provides an oxidation-resistant copper wire annealing method, comprising the following steps:

[0054] S1, place a spool 105 with copper wire wound on two adjacent trays 102, one spool 105 on each tray 102, and do not place a spool 105 on the top tray 102.

[0055] S2, connect two adjacent trays 102 with rubber posts 103, and fit each spool 105 onto the corresponding rubber post 103; place the rubber post 103 into the spool 105, and then connect the two ends of the rubber post 103 to the adjacent tray 102 with bolts. Repeat the same operation on multiple rubber posts 103, and multiple trays 102 are connected together.

[0056] S3, place the bracket containing the spool 105 inside the outer cylinder 100, lift the entire bracket using the lifting lug 108 of one of the trays 102 and place it into the outer cylinder 100, then cover the outer cylinder 100 with the end cap 101, rotate the mounting plate so that the end cap 101 moves horizontally and is positioned above the outer cylinder 100, start the motor 113, and the motor 113 drives the end cap 101 to approach the outer cylinder 100 and abut against the outer cylinder 100 through the threaded rod 114, thus separating the inner and outer parts of the outer cylinder 100.

[0057] S4, activate the negative pressure mechanism to draw a vacuum inside the outer cylinder 100; the negative pressure mechanism draws gas from inside the outer cylinder 100 through the air passage 109 until the bracket changes from the first state to the second state, then close the negative pressure mechanism.

[0058] S5, start the heating mechanism 115 to heat the inside of the outer cylinder 100. The heating mechanism 115 heats the inside of the outer cylinder 100. Each wire drum 105 is in an independent small space. The range of hot air flow in the space is reduced. The overall temperature difference of all copper wires inside the outer cylinder 100 is small, and the difference in annealing quality is small.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An anti-oxidation copper wire annealing device for annealing copper wire wound on a spool, characterized in that, include: The system comprises an outer cylinder, end caps, a bracket, a negative pressure mechanism, and a heating mechanism. The outer cylinder is vertically oriented and has a bottom but no top. The end caps are movably positioned above the outer cylinder to separate its interior from its exterior. The bracket includes multiple trays and multiple rubber pillars. The trays are arranged vertically in sequence, with the axis of each tray extending vertically. There is a gap between adjacent trays, and a gap is also provided between each tray and the inner wall of the outer cylinder. The rubber pillars are arranged vertically in sequence, with each pillar positioned between adjacent trays. Each rubber pillar can interact with adjacent trays. The outer cylinder consists of a tray and a spool fitted onto a rubber column. The rubber column has an internal air chamber, allowing it to expand or contract radially when the pressure inside and outside is inconsistent. Multiple partition rings are fixedly installed on the inner wall of the outer cylinder, arranged vertically. These rings fit over the tray and divide the interior of the outer cylinder into several small, vertically arranged spaces, with each spool located within one of these spaces. The tray, rubber column, and partition rings are coaxial. Each partition ring corresponds to one tray, and each partition ring can contact its corresponding tray. The anti-oxidation copper wire annealing device has a first state and a second state. In the first state, there is a gap between the tray and the corresponding partition ring, multiple small spaces are connected, and the pressure inside and outside the rubber column is the same. In the second state, the tray is in contact with the corresponding partition ring, multiple small spaces are separated from each other, the pressure inside the rubber column is greater than the pressure outside the rubber column, and the rubber column expands in its radial direction and comes into contact with the wire drum. The negative pressure mechanism is located on the outside of the outer cylinder and is used to extract the gas inside the outer cylinder; the heating mechanism is located on the inner wall of the outer cylinder and is used to heat the copper wire inside the outer cylinder.

2. The anti-oxidation copper wire annealing device according to claim 1, characterized in that, The rubber column is made of borosilicate rubber.

3. The anti-oxidation copper wire annealing device according to claim 1, characterized in that, The diameters of the multiple trays decrease sequentially from top to bottom, and the inner diameters of the multiple dividing rings decrease sequentially from top to bottom.

4. The anti-oxidation copper wire annealing device according to claim 3, characterized in that, Each tray has a first inclined surface on its circumference, which gradually approaches the center of the tray from top to bottom; each dividing ring has a second inclined surface on its inner circumference, which gradually approaches the outer circumference of the dividing ring from bottom to top, and the second inclined surface on each dividing ring abuts against the first inclined surface on the corresponding tray.

5. The anti-oxidation copper wire annealing device according to claim 1, characterized in that, The bottom of the lowest tray is equipped with a counterweight, which is in contact with the bottom of the outer cylinder.

6. The anti-oxidation copper wire annealing device according to claim 1, characterized in that, The wall thickness of the multiple rubber columns increases sequentially from top to bottom. An air passage is provided at the bottom of the outer cylinder, and the negative pressure mechanism is connected to the inside of the outer cylinder through the air passage.

7. The anti-oxidation copper wire annealing device according to claim 6, characterized in that, An electromagnetic valve is installed inside the air passage to control pressure changes inside the outer cylinder.

8. The anti-oxidation copper wire annealing device according to claim 1, characterized in that, Each rubber column is equipped with multiple reinforcing ribs. The reinforcing ribs are elastic and extend along the axial direction of the rubber column. The multiple reinforcing ribs are evenly distributed around the circumference of the rubber column.

9. The anti-oxidation copper wire annealing device according to claim 1, characterized in that, It also includes a support frame, which is used to control the movement of the end cap in the vertical and horizontal directions.

10. A method for annealing oxidation-resistant copper wire, utilizing the oxidation-resistant copper wire annealing apparatus according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1, place a spool of copper wire on two adjacent trays; S2, connect two adjacent trays with rubber posts, and put each spool on the corresponding rubber post; S3, place the bracket containing the spool inside the outer cylinder, and then cover the outer cylinder with the end cap; S4, activate the negative pressure mechanism to draw a vacuum from the inside of the outer cylinder; S5, activate the heating mechanism to heat the inside of the outer cylinder.

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