Surface self-lubricating drawing device for oxygen-free copper microtubes

Abstract

The utility model relates to oxygen -free copper micro -tube processing device technical field especially relates to a kind of oxygen -free copper micro -tube surface self-lubricating drawing device, its technical scheme includes base, the top of base is slidably installed with first holder, the top of base is fixedly installed with second holder, the top of base is fixedly installed with two guide frames, the top of two guide frames is jointly fixedly installed with oil injection component, two oil injection barrels are equipped on oil injection component, piston rod is movably installed in oil injection barrel, the top of base is fixedly installed with auxiliary drawing component, and connecting frame is rotatably installed on auxiliary drawing component.The utility model is installed on the guide wheel of guide frame, and the copper micro -tube needing to be drawn is guided and limited, in the rotating process of the connecting frame installed on auxiliary drawing component, piston rod can be driven to move downward, lubricating oil in oil injection barrel is conveniently pressed into guide wheel, the friction of copper micro -tube and guide wheel contact surface is reduced, and the smoothness when copper micro -tube is drawn is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of oxygen-free copper microtube processing equipment, and in particular to a self-lubricating pull-out device for the surface of oxygen-free copper microtubes. Background Technology

[0002] Oxygen-free copper microtubules are fine-diameter tubular materials made from oxygen-free copper (copper material with extremely high purity and extremely low oxygen content, typically ≥99.95% purity and ≤0.003% oxygen content) through precision machining. They possess excellent electrical and thermal conductivity, as well as good ductility and corrosion resistance. During the drawing process of the microtubules, the metal grains of oxygen-free copper are elongated and refined due to plastic deformation, forming a "fibrous structure," which significantly improves the strength and hardness of the microtubules (such as increased tensile strength) while retaining their good ductility. This performance optimization makes the microtubules more wear-resistant and fracture-resistant during subsequent assembly or use (such as bending operations in minimally invasive medical devices and vibration environments in precision instruments).

[0003] In existing oxygen-free copper microtubes, a traction mechanism is typically used to stretch the microtubes during the actual drawing process. To prevent swaying during drawing, the microtubes are typically attached to guide wheels for support, effectively improving stability. However, friction occurs between the microtubes and the guide wheels. Without lubrication, this increases the likelihood of wear and the risk of jamming during drawing, significantly reducing the smoothness of the process. Therefore, this application proposes a self-lubricating drawing device for oxygen-free copper microtubes that automatically lubricates the microtube surface. Utility Model Content

[0004] The purpose of this invention is to address the problem in the prior art where friction exists at the contact point between the copper microtube and the guide wheel, which easily leads to wire jamming during the pulling process. The invention proposes a self-lubricating pulling device for oxygen-free copper microtubes that can automatically lubricate the surface of the copper microtube.

[0005] The technical solution of this utility model: A self-lubricating pull-out device for oxygen-free copper microtubes, comprising a base, a first clamp slidably mounted on the top of the base, and a second clamp fixedly mounted on the top of the base away from the first clamp, and further comprising:

[0006] The guide frame has two guide frames and is fixedly installed on the top of the base. The top of the two guide frames is fixedly installed with an oil injection assembly. The oil injection assembly has two oil injection cylinders. A piston rod is movably installed inside the oil injection cylinder. The oil outlet pipe at the bottom of the oil injection cylinder is suspended above the matching guide frame.

[0007] An auxiliary pulling assembly is fixedly installed on the top of the base. A connecting frame is rotatably mounted on the auxiliary pulling assembly, and a sling for pulling the piston rod is fixedly installed on the connecting frame.

[0008] Optionally, the auxiliary pulling assembly includes a second support frame, which is fixedly installed on the top of the base. The connecting frame is rotatably installed on the second support frame. A second guide wheel and a third guide wheel are rotatably installed at opposite ends of the connecting frame. A second motor is fixedly installed on the second support frame, and the output end of the second motor is fixedly connected to one end of the connecting shaft on the connecting frame.

[0009] Optionally, the guide frame includes a first support frame, which is fixedly installed on the top of the base. A first guide wheel is rotatably installed on the top of the first support frame. The first guide wheel is located below a matching oil outlet pipe. A waste oil collection box is fixedly installed on the first support frame and below the first guide wheel.

[0010] Optionally, the oil injection assembly includes a support plate, which is fixedly installed on the top of two first support frames. A limit frame is fixedly installed on the top of the support plate, and a connecting rod is movably threaded through the limit frame. A lifting plate is fixedly installed at the bottom of the connecting rod, and the end of the sling away from the connecting frame is fixedly connected to the lifting plate.

[0011] Optionally, a connecting plate is fixedly installed at the top of the connecting rod, and the tops of both piston rods are fixedly connected to the connecting plate. A spring is movably sleeved on the connecting rod, and the spring is positioned between the connecting plate and the limiting frame.

[0012] Optionally, a slide table is slidably mounted on the top of the base, the first clamp is fixedly mounted on the top of the slide table, a first motor is fixedly mounted on the base, and a reciprocating lead screw is fixedly mounted on the output end of the first motor. One end of the reciprocating lead screw passes through the slide table and is threadedly connected to it.

[0013] Optionally, the first clamp includes an L-shaped frame plate, which is fixedly installed on the top of the slide table. A support bracket is fixedly installed on the L-shaped frame plate, and a pressing bracket is provided above the support bracket. The pressing bracket is movably installed on several longitudinally arranged limiting posts on the L-shaped frame plate.

[0014] Optionally, the second clamp and the first clamp have the same structure. The L-shaped frame plate on the second clamp is fixedly installed above the base. A cylinder is fixedly installed at the top of each of the two L-shaped frame plates. The output end of each cylinder is fixedly connected to a matching pressing seat.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects: the guide wheel installed on the guide frame guides and limits the copper microtube that needs to be pulled, and the copper microtube is stretched by the auxiliary pulling assembly to improve the pulling effect. During the rotation of the connecting frame installed on the auxiliary pulling assembly, the piston rod can be driven to move downward, which facilitates the injection of lubricating oil in the oil injection cylinder into the guide wheel, reduces the friction between the copper microtube and the guide wheel contact surface, and effectively improves the smoothness of copper microtube pulling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the guide frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the first clamping device structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the auxiliary pull-out assembly structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the oil injection component structure of this utility model.

[0021] Reference numerals: 1. Base; 11. First motor; 12. Reciprocating lead screw; 13. Slide table;

[0022] 2. First clamp; 21. L-shaped frame plate; 22. Support bracket; 23. Pressing bracket; 24. Cylinder;

[0023] 3. Oil injection assembly; 31. Support plate; 32. Limiting bracket; 33. Lifting plate; 34. Hoisting cable; 35. Oil injection cylinder; 36. Connecting plate; 37. Connecting rod; 38. Spring; 39. Piston rod;

[0024] 4. Second clamp;

[0025] 5. Guide frame; 51. First support frame; 52. Waste oil collection box; 53. First guide wheel;

[0026] 6. Auxiliary pulling assembly; 61. Second support frame; 62. Second motor; 63. Connecting frame; 64. Second guide wheel; 65. Third guide wheel. Detailed Implementation

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example

[0029] like Figure 1 , Figure 2, Figure 4 and Figure 5 As shown, the present invention proposes a self-lubricating pull-out device for oxygen-free copper microtubes, comprising a base 1, a first clamp 2 slidably mounted on the top of the base 1, and a second clamp 4 fixedly mounted on the top of the base 1 away from the first clamp 2. The two ends of the copper microtube are clamped and fixed by the first clamp 2 and the second clamp 4. When the first clamp 2 slides away from the second clamp 4, the copper microtube can be pulled out. Two guide frames 5 are fixedly mounted on the top of the base 1, one guide frame 5 is located near the first clamp 2, and the other guide frame 5 is located near the second clamp 4. The first guide wheel 53 rotatably mounted on the guide frame 5 can limit the movement of the copper microtube, preventing the copper microtube from swinging during the pull-out process and effectively improving its stability during the pull-out process.

[0030] The top of the two guide frames 5 mentioned above is jointly supported by an oil injection assembly 3. The oil injection assembly 3 is equipped with two oil injection cylinders 35. A piston rod 39 is movably installed on the oil injection cylinder 35. An oil outlet pipe is fixedly installed at the bottom of the oil injection cylinder 35. The oil outlet pipe is suspended above the matching first guide wheel 53. When the piston rod 39 moves downward, it can force the lubricating oil in the oil injection cylinder 35 into the oil outlet pipe, and then make the lubricating oil drip onto the first guide wheel 53. At this time, the lubricating oil seeps into the gap between the copper microtube and the first guide wheel 53, which can lubricate the contact surface between the copper microtube and the first guide wheel 53, reduce the frictional resistance between the two, and thus prevent the copper microtube from getting stuck during the drawing process, effectively improving the smoothness of the copper microtube drawing process.

[0031] An auxiliary pulling assembly 6 is fixedly installed on the top of the base 1. A connecting frame 63 is rotatably mounted on the auxiliary pulling assembly 6. A second guide wheel 64 and a third guide wheel 65 are rotatably mounted on opposite ends of the connecting frame 63. The end of the copper microtube near the first clamp 2 overlaps the bottom of the third guide wheel 65, and the end of the copper microtube near the second clamp 4 overlaps the top of the second guide wheel 64. When the connecting frame 63 rotates at a certain angle, it can lift the end of the copper microtube near the second clamp 4 upwards and press the end of the copper microtube near the first clamp 2 downwards, thereby providing auxiliary pulling for the portion of the copper microtube located between the second guide wheel 64 and the third guide wheel 65. During the traction and stretching process of the copper microtube, the connecting frame 63 continuously swings back and forth, which can assist in the traction and stretching of the copper microtube passing through the second guide wheel 64 and the third guide wheel 65, satisfying the traction and stretching of the entire copper microtube. The connecting frame 63 is fixedly installed with a sling 34, the other end of which is fixedly connected to a connector for connecting the two piston rods 39. When the end of the connecting frame 63 near the second guide wheel 64 moves downward, it can pull the sling 34 downward, thereby driving the two piston rods 39 downward. When the piston rods 39 move downward, the lubricating oil in the oil injection cylinder 35 can be squeezed out, ensuring that the lubricating oil can automatically drip onto the surface of the copper microtube, which is convenient for operation.

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, in order to facilitate the control of the swing of the connecting frame 63, a second motor 62 is fixedly installed on the outer wall of the second support frame 61 that constitutes the auxiliary pulling assembly 6. The connecting frame 63 is rotatably installed on the second support frame 61. The output end of the second motor 62 is fixedly connected to the rotating shaft on one side of the second support frame 61. The second motor 62 can drive the connecting frame 63 to rotate. The second motor 62 is a servo motor and is controlled by an externally installed control cabinet. When the controller installed inside the control cabinet sends a command, it can quickly control the rotation angle of the second motor 62 and can reciprocate within a certain angle range (single rotation angle less than 45°).

[0033] Furthermore, to facilitate the traction and stretching of the copper microtube, a slide table 13 is slidably installed on the top of the base 1, and a first clamp 2 is fixedly assembled on the top of the slide table 13. A first motor 11 is fixedly installed on the base 1, and a reciprocating lead screw 12 is fixedly installed at the output end of the first motor 11. One end of the reciprocating lead screw 12 passes through the slide table 13 and is threadedly connected to it. The first motor 11 drives the reciprocating lead screw 12 to rotate, which facilitates the horizontal movement of the slide table 13 and the first clamp 2. When the first clamp 2 moves away from the second clamp 4, the copper microtube can be traction and stretching, which effectively improves the convenience of the copper microtube pulling process.

[0034] Secondly, to facilitate the recycling of waste lubricating oil, the first support frame 51, which constitutes the guide frame 5, is fixedly assembled on the top of the base 1, and the first guide wheel 53 is rotatably mounted on the matching first support frame 51 to ensure that the first guide wheel 53 can be stably rotated and mounted above the base 1; a waste oil collection box 52 is fixedly installed on the first support frame 51, and the waste oil collection box 52 is located below the matching first guide wheel 53. When the lubricating oil seeps out from the first guide wheel 53 and drips down, the waste oil collection box 52 collects this part of the lubricating oil, which effectively improves the convenience of waste lubricating oil collection.

[0035] like Figure 1 , Figure 4 and Figure 5 As shown, in order to facilitate the automatic extrusion of lubricating oil, the support plate 31 constituting the oil injection assembly 3 is fixedly installed on the top of the two first support frames 51. The top of the support plate 31 is fixedly installed with a limit frame 32, and a connecting rod 37 is movably passed through the limit frame 32. The bottom end of the connecting rod 37 is fixedly installed with a lifting plate 33. The end of the sling 34 away from the connecting frame 63 is fixedly connected to the lifting plate 33. The top of the connecting rod 37 is fixedly installed with a connecting plate 36. The tops of the two piston rods 39 are fixedly connected to the connecting plate 36. When the end of the connecting frame 63 near the second guide wheel 64 rotates downward, it can pull the sling 34 downward, thereby driving the lifting plate 33, the connecting rod 37 and the connecting plate 36 to move downward. At this time, the piston rod 39 is pressed down by the downwardly moving connecting plate 36, and the lubricating oil in the oil injection cylinder 35 can be squeezed out.

[0036] Furthermore, to ensure that the oil injection cylinder 35 can achieve intermittent oil output, the piston rod 39 needs to be pressed down and then moved upward again. A spring 38 is movably sleeved on the connecting rod 37. The spring 38 is located between the connecting plate 36 and the limiting frame 32. When the piston rod 39 moves down, the connecting plate 36 presses the spring 38 downward and puts it into a compressed state. When the end of the connecting frame 63 near the second guide wheel 64 rotates upward, the sling 34 is in a relaxed state, which releases the downward tension on the connecting rod 37 and the connecting plate 36. At this time, the compressed spring 38 returns to the unfolded state and can push the connecting plate 36 upward, thus driving the two piston rods 39 to move upward, ensuring that the piston rods 39 can perform reciprocating motion in the vertical direction, so that the oil injection cylinder 35 can perform intermittent oil output operation.

[0037] Secondly, an oil inlet pipe is fixedly installed on the outer wall of the oil filling cylinder 35. One end of the external connecting hose is fixed to the end of the oil inlet pipe, and the other end of the connecting hose is fixed to the outlet end of the externally installed low-pressure pump. The low-pressure pump can inject the stored lubricating oil into the connecting hose. When the lubricating oil in the oil filling cylinder 35 is insufficient, it is convenient to replenish the lubricating oil in the oil filling cylinder 35.

[0038] like Figure 1 and Figure 3 As shown, in order to facilitate the clamping and fixing of the copper microtube, the L-shaped frame plate 21 that constitutes the first clamp 2 is slidably installed on the top of the slide table 13. When the slide table 13 moves, it can drive the first clamp 2 to move laterally. A support card seat 22 is fixedly installed on the L-shaped frame plate 21, and a pressing card seat 23 is movably installed on several longitudinally arranged limiting posts on the L-shaped frame plate 21. At this time, the pressing card seat 23 is movably installed above the support card seat 22. When one end of the copper microtube passes through the semi-circular groove at the top of the support card seat 22, the pressing card seat 23 is connected and fixed to the top of the support card seat 22. Then, the pressing card seat 23 presses the upper half of the copper microtube. By splicing the support card seat 22 and the pressing card seat 23 into one piece, the copper microtube can be tightly clamped and fixed.

[0039] Furthermore, in order to facilitate the lifting and lowering movement of the pressing card seat 23, a cylinder 24 is fixedly installed on the top of the L-shaped frame plate 21. The output end of the cylinder 24 is fixedly connected to the pressing card seat 23. The pressing card seat 23 is lifted and lowered by the cylinder 24, which facilitates the adjustment of the pressing card seat 23.

[0040] Secondly, semi-circular rubber pads are fixedly installed in the grooves at the top of the support bracket 22 and the bottom of the pressure bracket 23. The semi-circular rubber pads can reduce the wear on the outer wall of the copper microtube and improve the protection effect of the copper microtube.

[0041] It is worth noting that the first clamp 2 and the second clamp 4 have the same structure. The L-shaped frame plate 21 on the second clamp 4 is fixedly installed above the base 1 to ensure that the position of the second clamp 4 is fixed. The second clamp 4 clamps and fixes the end of the copper microtube away from the first clamp 2. When the first clamp 2 performs traction and stretching treatment on the copper microtube, it can effectively pull out the part of the copper microtube located between the two clamps.

[0042] In this embodiment, the two ends of the copper microtube are first clamped and fixed by the first clamp 2 and the second clamp 4, which facilitates the subsequent pulling of the part of the copper microtube located between the two clamps. The second motor 62 drives the connecting frame 63 to swing. When the second guide wheel 64 moves upward and the third guide wheel 65 moves downward, it can play an auxiliary pulling effect on the copper microtube. During this process, the first motor 11 drives the slide table 13 and the first clamp 2 to move away from the second clamp 4, which can perform traction and stretching treatment on the copper microtube, effectively improving the effect of the copper microtube pulling treatment.

[0043] During the drawing process, when the end of the connecting frame 63 near the second guide wheel 64 moves downward, it can pull the sling 34 downward, which in turn drives the connecting plate 36 to move downward. When the connecting plate 36 moves downward, it can press down the two piston rods 39. At this time, the lubricating oil inside the oil injection cylinder 35 is squeezed out. Since the oil outlet pipe fixedly installed at the bottom of the oil injection cylinder 35 is suspended above the first guide wheel 53, the squeezed-out lubricating oil can drip onto the first guide wheel 53. When the dripping lubricating oil seeps into the gap where the copper microtube contacts the first guide wheel 53, it can coat the surface of the copper microtube, effectively reducing the friction between the contact end face of the copper microtube and the first guide wheel 53. This not only reduces the probability of damage to the surface of the copper microtube, but also prevents the copper microtube from getting stuck at the first guide wheel 53, avoiding the phenomenon of wire jamming during the drawing process, and effectively improving the smoothness of the copper microtube drawing process.

[0044] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A self-lubricating pull-out device for oxygen-free copper microtubes, comprising a base (1), wherein a first clamp (2) is slidably mounted on the top end of the base (1), and a second clamp (4) is fixedly mounted on the top end of the base (1) and on the side away from the first clamp (2), characterized in that, Also includes: Guide frame (5), two guide frames (5) are provided and fixedly installed on the top of the base (1). The top of the two guide frames (5) are fixedly installed with an oil injection assembly (3). The oil injection assembly (3) is provided with two oil injection cylinders (35). A piston rod (39) is movably installed inside the oil injection cylinder (35). The oil outlet pipe at the bottom of the oil injection cylinder (35) is suspended above the matching guide frame (5). An auxiliary pulling assembly (6) is fixedly installed on the top of the base (1). A connecting frame (63) is rotatably installed on the auxiliary pulling assembly (6). A sling (34) for pulling the piston rod (39) is fixedly installed on the connecting frame (63).

2. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 1, characterized in that, The auxiliary pulling assembly (6) includes a second support frame (61), which is fixedly installed on the top of the base (1). The connecting frame (63) is rotatably installed on the second support frame (61). The two ends of the connecting frame (63) that are far apart are respectively rotatably installed with a second guide wheel (64) and a third guide wheel (65). A second motor (62) is fixedly installed on the second support frame (61). The output end of the second motor (62) is fixedly connected to one end of the connecting shaft on the connecting frame (63).

3. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 2, characterized in that, The guide frame (5) includes a first support frame (51), which is fixedly installed on the top of the base (1). A first guide wheel (53) is rotatably installed on the top of the first support frame (51). The first guide wheel (53) is located below the matching oil outlet pipe. A waste oil collection box (52) is fixedly installed on the first support frame (51) and below the first guide wheel (53).

4. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 3, characterized in that, The oil injection assembly (3) includes a support plate (31), which is fixedly installed on the top of two first support frames (51). A limit frame (32) is fixedly installed on the top of the support plate (31). A connecting rod (37) is movably passed through the limit frame (32). A lifting plate (33) is fixedly installed at the bottom of the connecting rod (37). The end of the sling (34) away from the connecting frame (63) is fixedly connected to the lifting plate (33).

5. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 4, characterized in that, A connecting plate (36) is fixedly installed on the top of the connecting rod (37), and the tops of the two piston rods (39) are fixedly connected to the connecting plate (36). A spring (38) is movably sleeved on the connecting rod (37), and the spring (38) is positioned between the connecting plate (36) and the limiting frame (32).

6. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 1, characterized in that, A slide table (13) is slidably mounted on the top of the base (1). The first clamp (2) is fixedly mounted on the top of the slide table (13). A first motor (11) is fixedly mounted on the base (1). A reciprocating screw (12) is fixedly mounted on the output end of the first motor (11). One end of the reciprocating screw (12) passes through the slide table (13) and is threadedly connected to it.

7. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 6, characterized in that, The first clamp (2) includes an L-shaped frame plate (21), which is fixedly installed on the top of the slide table (13). A support bracket (22) is fixedly installed on the L-shaped frame plate (21), and a pressing bracket (23) is provided above the support bracket (22). The pressing bracket (23) is movably installed on several longitudinally arranged limiting posts on the L-shaped frame plate (21).

8. The oxygen-free copper microtube surface self-lubricating pulling device according to claim 7, characterized in that, The second clamp (4) has the same structure as the first clamp (2). The L-shaped frame plate (21) on the second clamp (4) is fixedly installed above the base (1). The top of each of the two L-shaped frame plates (21) is fixedly installed with a cylinder (24). The output end of each cylinder (24) is fixedly connected to a matching pressing seat (23).

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