Copper pipe inner wall roughening machine

The design of the copper tube inner wall roughening machine solves the problem of loose bonding between aluminum rod and copper tube, achieving a tight bond between the aluminum rod and copper tube, improving conductivity, and ensuring roughening quality and system stability.

CN223834126UActive Publication Date: 2026-01-27FURUKAWA AVC ELECTRONICS (SUZHOU) CO LTD
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Patent Information

Application Number
CN202520465814.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-17
Publication Date
2026-01-27
Estimated Expiration
2035-03-17

AI Technical Summary

Technical Problem

The smooth inner walls of the aluminum rod and copper tube prevent them from bonding tightly enough during stretching or rolling, resulting in uneven contact surfaces or gaps. This increases contact resistance, affects conductivity, and may lead to localized overheating, impacting the stability and safety of the system.

Method used

A copper tube inner wall roughening machine was designed. By setting a limiting component and a roughening component, the inner wall of the copper tube can be roughened evenly. By combining the rotation of the copper tube and the reverse rotation of the roughening head, the aluminum rod and the copper tube are tightly bonded, avoiding uneven wear and improving roughening efficiency and quality.

Benefits of technology

This achieves a tight bond between the aluminum rod and the copper tube, improving conductivity, ensuring consistent roughening depth and quality, preventing localized overheating, and enhancing system stability and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a copper pipe inner wall roughening machine, which relates to the technical field of copper pipe roughening and comprises a bottom plate, two fixing seats are fixedly connected to the left side of the upper surface of the bottom plate, rotating rollers are rotatably connected to the front side and the rear side between the two fixing seats, and the left end of the rotating roller on the front side penetrates through the fixing seat on the left side and is fixedly connected with a first transmission wheel. A first motor is fixedly installed on the upper surface of the bottom plate and located on the front side of the fixing base, a second transmission wheel is fixedly connected to the output end of the first motor and is in transmission connection with the first transmission wheel through a belt, two sliding grooves are formed in the upper surface of the bottom plate and located on the rear side of the fixing base, and limiting assemblies are slidably connected to the left side and the right side of each sliding groove. The right side of the upper surface of the bottom plate is fixedly connected with a roughening assembly. The copper pipe inner wall roughening device has the advantages that effective friction force can be formed between the roughening head and the inner wall of a copper pipe through reverse rotation, uniform roughening of the inner wall of the copper pipe is achieved, possible uneven abrasion is avoided through the design of reverse rotation, and it is guaranteed that the roughening depth and quality are consistent.
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Description

Technical Field

[0001] This utility model relates to the field of copper pipe roughening technology, specifically to a copper pipe inner wall roughening machine. Background Technology

[0002] Copper-clad aluminum busbars are a type of material with aluminum as the base and copper as the outer layer. They combine the high-quality, stable conductivity of copper with the low-cost energy of aluminum, resulting in a novel conductor material with low contact resistance. Currently, the main production methods for copper-clad aluminum busbars include: setting up an aluminum rod and a copper tube with a matching outer diameter together; pressing the aluminum rod into the copper tube; stretching or rolling to firmly bond the copper tube and aluminum rod; and finally drawing it into the desired shape and size.

[0003] However, since the inner walls of aluminum rods and copper tubes are smooth, if the inner wall of the copper tube is not roughened, the aluminum rod and copper tube cannot be fully and tightly bonded during stretching or rolling. Insufficient bonding between the aluminum rod and copper tube, uneven contact surfaces, or gaps may lead to increased contact resistance, thereby affecting conductivity. Poor contact can cause excessive heat to be generated when current passes through, which in turn affects the efficiency of the conductor and may cause local overheating, affecting the stability and safety of the system. To address the above problems, a copper tube inner wall roughening machine is proposed to solve them. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a copper tube inner wall roughening machine, which solves the problem that, due to the smooth inner walls of aluminum rods and copper tubes, if the inner walls of the copper tubes are not roughened, the aluminum rods and copper tubes cannot be fully and tightly bonded during stretching or rolling. Insufficient bonding between the aluminum rods and copper tubes, uneven contact surfaces, or gaps may lead to increased contact resistance, thereby affecting conductivity. Poor contact can also cause excessive heat to be generated when current passes through, thus affecting the efficiency of the conductor and potentially causing local overheating, affecting the stability and safety of the system.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a copper pipe inner wall roughening machine, including a base plate, two fixed seats are fixedly connected to the left side of the upper surface of the base plate, and rotating rollers are rotatably connected to the front and rear sides of the two fixed seats. The left end of the front rotating roller passes through the left fixed seat and is fixedly connected to a first transmission wheel. A first motor is fixedly installed on the upper surface of the base plate in front of the fixed seats. A second transmission wheel is fixedly connected to the output end of the first motor. The second transmission wheel is connected to the first transmission wheel via a belt. Two sets of sliding grooves are opened on the upper surface of the base plate behind the fixed seats. Limiting components are slidably connected to the left and right sides of the sliding grooves. A roughening component is fixedly connected to the right side of the upper surface of the base plate.

[0006] Preferably, the deburring assembly includes two sets of rotating supports, which are arranged left and right and fixedly connected to the upper surface of the base plate. A threaded rod is rotatably connected between the two sets of rotating supports at the middle. A third motor for driving the threaded rod to rotate is fixedly installed on the side of the right rotating support, and a limit collar is fixedly connected above the left rotating support.

[0007] Preferably, pads are fixedly connected between the two sets of rotating supports on both the front and rear sides of the threaded rod, and movable guide rails are fixedly connected above the two sets of pads. A mounting plate is slidably connected above the two sets of movable guide rails via a sliding block, and the bottom of the mounting plate is threadedly connected to the outer surface of the threaded rod via a threaded block.

[0008] Preferably, a second motor is fixedly mounted on the right side of the upper surface of the mounting plate. The output end of the second motor is fixedly connected to a rotating rod via a coupling. The end of the rotating rod passes through the inside of the limiting collar and is detachably connected to a roughening head.

[0009] Preferably, the limiting component includes a sliding plate, the bottom of which is fixedly connected to two sets of sliding strips, the two sets of sliding strips being slidably connected to the inside of two sets of sliding grooves, and locking bolts for fixing are threadedly connected to the left and right sides of the upper surface of the sliding plate.

[0010] Preferably, a support frame is fixedly connected to the middle of the upper surface of the sliding plate, a cylinder is fixedly connected to the upper side of the support frame, a rotating frame is fixedly connected to the output end of the cylinder, and two sets of rolling guide wheels are rotatably connected inside the rotating frame.

[0011] Compared with the prior art, the advantages of this utility model are as follows: This utility model can adapt to the roughening and pressing requirements of copper tubes of different lengths by setting two sets of limiting components. The output end of the first motor drives the rotating roller to rotate through the first transmission wheel, belt and second transmission wheel to realize the rotation of the copper tube. The output end of the second motor drives the rotating rod through the coupling to rotate synchronously and drive the roughening head to rotate in the opposite direction relative to the copper tube, thereby roughening the inner wall of the copper tube. This not only removes the oxide layer on the inner wall of the copper tube, but also makes the aluminum rod on the inner wall of the roughened copper tube more tightly bonded, and the rolled copper-clad aluminum busbar has better conductivity. In addition, this reverse rotation can form an effective friction force between the roughening head and the inner wall of the copper tube, realizing uniform roughening of the inner wall of the copper tube. The reverse rotation design avoids possible uneven wear and ensures consistent roughening depth and quality. The equipment achieves comprehensive roughening of the inner wall of the copper tube by combining the rotation of the copper tube and the linear movement of the roughening head. This working method greatly improves roughening efficiency and roughening quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural schematic diagram of the present invention from another perspective;

[0014] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle;

[0015] Figure 4 This is a schematic diagram of the frosting component structure in this utility model;

[0016] Figure 5 This is a schematic diagram of the limiting component structure in this utility model.

[0017] The numbers on the map are:

[0018] 1. Base plate; 2. Roughening assembly; 201. Rotating support; 202. Threaded rod; 203. Pad; 204. Moving guide rail; 205. Mounting plate; 206. Second motor; 207. Coupling; 208. Limiting collar; 209. Rotating rod; 210. Roughening head; 211. Third motor; 3. Fixed seat; 4. Rotating roller; 5. First transmission wheel; 6. First motor; 7. Second transmission wheel; 8. Sliding groove; 9. Limiting assembly; 901. Sliding plate; 902. Sliding bar; 903. Support frame; 904. Cylinder; 905. Rotating frame; 906. Rolling guide wheel; 907. Locking bolt. Detailed Implementation

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] Reference Figure 1-5 As shown, a copper pipe inner wall roughening machine includes a base plate 1. Two fixed seats 3 are fixedly connected to the left side of the upper surface of the base plate 1. Rotating rollers 4 are rotatably connected to both the front and rear sides of the two fixed seats 3. The left end of the front rotating roller 4 passes through the left fixed seat 3 and is fixedly connected to a first transmission wheel 5. A first motor 6 is fixedly installed on the upper surface of the base plate 1 in front of the fixed seat 3. A second transmission wheel 7 is fixedly connected to the output end of the first motor 6. The second transmission wheel 7 is connected to the first transmission wheel 5 via a belt. Two sets of sliding grooves 8 are opened on the upper surface of the base plate 1 behind the fixed seat 3. Limiting components 9 are slidably connected to the left and right sides of the sliding grooves 8. A roughening component 2 is fixedly connected to the right side of the upper surface of the base plate 1. The design of the sliding grooves 8 allows the limiting components 9 to be flexibly adjusted according to the length of the copper pipe, improving the versatility and adaptability of the equipment.

[0021] Reference Figure 4As shown, the roughening assembly 2 includes two sets of rotating supports 201. The two sets of rotating supports 201 are arranged left and right and fixedly connected to the upper surface of the base plate 1. A threaded rod 202 is rotatably connected between the two sets of rotating supports 201. A third motor 211 for driving the threaded rod 202 to rotate is fixedly installed on the side of the right rotating support 201. A limit collar 208 is fixedly connected above the left rotating support 201.

[0022] Reference Figure 4 As shown, pads 203 are fixedly connected to both sides of the threaded rod 202 between the two sets of rotating supports 201. Moving guide rails 204 are fixedly connected above the two sets of pads 203. Mounting plates 205 are slidably connected above the two sets of moving guide rails 204 via sliding blocks. The bottom of the mounting plate 205 is threadedly connected to the outer surface of the threaded rod 202 via threaded blocks. The roughening assembly 2 achieves linear movement of the roughening head 210 inside the copper tube through the cooperation of the threaded rod 202, the moving guide rails 204 and the mounting plate 205. This design makes the roughening process more uniform and comprehensive.

[0023] Reference Figure 4 As shown, a second motor 206 is fixedly installed on the right side of the upper surface of the mounting plate 205. The output end of the second motor 206 is fixedly connected to a rotating rod 209 via a coupling 207. The end of the rotating rod 209 passes through the inside of the limiting collar 208 and is detachably connected to a deburring head 210. The function of the limiting collar 208 is to support the rotating rod 209. The friction between the rotating rod 209 and the inner wall of the limiting collar 208 is small. The rotating rod 209 can rotate or slide inside the limiting collar 208. The design of the limiting collar 208 restricts the movement range of the deburring head 210, preventing the deburring head 210 from exceeding the predetermined range during movement, thereby ensuring the safety and accuracy of the deburring process.

[0024] Reference Figure 5 As shown, the limiting component 9 includes a sliding plate 901. Two sets of sliding bars 902 are fixedly connected to the bottom of the sliding plate 901. The two sets of sliding bars 902 are slidably connected to the inside of two sets of sliding grooves 8. Locking bolts 907 for fixing are threaded on both the left and right sides of the upper surface of the sliding plate 901. The limiting component 9 is fixed by the locking bolts 907, which ensures the stability after adjustment. At the same time, the sliding of the sliding bars 902 in the sliding grooves 8 also ensures the smoothness of the adjustment.

[0025] Reference Figure 5As shown, a support frame 903 is fixedly connected to the middle of the upper surface of the sliding plate 901. A cylinder 904 is fixedly connected to the upper side of the support frame 903. A rotating frame 905 is fixedly connected to the output end of the cylinder 904. Two sets of rolling guide wheels 906 are rotatably connected inside the rotating frame 905. The rolling guide wheels 906 inside the rotating frame 905 reduce the frictional resistance with the surface of the copper tube, making the copper tube rotate more smoothly and preventing the copper tube from detaching from the rotating roller 4 during rotation.

[0026] Working principle: First, place the copper tube to be roughened above the two rotating rollers 4. Then, loosen the locking bolt 907 in the leftmost limiting assembly 9. Adjust the distance between the two sets of limiting assemblies 9 according to the length of the copper tube by sliding the sliding bar 902 in the sliding groove 8. Then, tighten the locking bolt 907 to complete the fixation. Afterward, the output end of the cylinder 904 in the limiting assembly 9 pushes the rotating frame 905 downward until the rolling guide wheel 906 contacts the surface of the copper tube. The output end of the third motor 211 drives the threaded rod 202 to rotate, which drives the end of the roller through the threaded engagement with the mounting plate 205. The roughening head 210 enters the copper tube. Then, the output end of the second motor 206 rotates through the coupling 207 and the rotating rod 209, thereby synchronously driving the roughening head 210 to rotate and roughen the inner wall of the copper tube. At the same time, the output end of the first motor 6 drives the rotating roller 4 to rotate through the first transmission wheel 5, the belt and the second transmission wheel 7, thereby realizing the rotation of the copper tube (it should be noted that the rotation direction of the copper tube is opposite to the rotation direction of the roughening head 210). Under the drive of the first motor 6, the copper tube will rotate, and under the drive of the third motor 211, the roughening head 210 will move linearly, thereby realizing the roughening of the entire inner wall of the copper tube.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A copper pipe inner wall roughening machine, characterized in that: The base plate (1) includes two fixed seats (3) fixedly connected to the left side of the upper surface of the base plate (1). Rotating rollers (4) are rotatably connected to both the front and rear sides of the two fixed seats (3). The left end of the front rotating roller (4) passes through the left fixed seat (3) and is fixedly connected to a first transmission wheel (5). A first motor (6) is fixedly installed on the upper surface of the base plate (1) in front of the fixed seat (3). A second transmission wheel (7) is fixedly connected to the output end of the first motor (6). The second transmission wheel (7) is connected to the first transmission wheel (5) via a belt. Two sets of sliding grooves (8) are opened on the upper surface of the base plate (1) behind the fixed seat (3). Limiting components (9) are slidably connected to both the left and right sides of the sliding grooves (8). A roughening component (2) is fixedly connected to the right side of the upper surface of the base plate (1).

2. The copper tube inner wall roughening machine according to claim 1, characterized in that: The deburring assembly (2) includes two sets of rotating supports (201). The two sets of rotating supports (201) are arranged left and right and fixedly connected to the upper surface of the base plate (1). A threaded rod (202) is rotatably connected between the two sets of rotating supports (201). A third motor (211) for driving the threaded rod (202) to rotate is fixedly installed on the side of the right rotating support (201). A limit collar (208) is fixedly connected above the left rotating support (201).

3. A copper tube inner wall roughening machine according to claim 2, characterized in that: A pad (203) is fixedly connected between the two sets of rotating supports (201) on both the front and rear sides of the threaded rod (202). A movable guide rail (204) is fixedly connected above the two sets of pads (203). A mounting plate (205) is slidably connected above the two sets of movable guide rails (204) via a sliding block. The bottom of the mounting plate (205) is threadedly connected to the outer surface of the threaded rod (202) via a threaded block.

4. A copper tube inner wall roughening machine according to claim 3, characterized in that: A second motor (206) is fixedly installed on the right side of the upper surface of the mounting plate (205). The output end of the second motor (206) is fixedly connected to a rotating rod (209) through a coupling (207). The end of the rotating rod (209) passes through the inside of the limiting collar (208) and is detachably connected to a roughening head (210).

5. A copper tube inner wall roughening machine according to any one of claims 1-4, characterized in that: The limiting component (9) includes a sliding plate (901), and two sets of sliding strips (902) are fixedly connected to the bottom of the sliding plate (901). The two sets of sliding strips (902) are slidably connected to the two sets of sliding grooves (8). Locking bolts (907) for fixing are threaded on both the left and right sides of the upper surface of the sliding plate (901).

6. A copper tube inner wall roughening machine according to claim 5, characterized in that: A support frame (903) is fixedly connected to the middle of the upper surface of the sliding plate (901). A cylinder (904) is fixedly connected to the upper side of the support frame (903). A rotating frame (905) is fixedly connected to the output end of the cylinder (904). Two sets of rolling guide wheels (906) are rotatably connected inside the rotating frame (905).