A copper-aluminum composite welding terminal, its manufacturing equipment and manufacturing method

Abstract

The present invention provides a copper-aluminum composite welding terminal, its manufacturing equipment and manufacturing method, which relates to the technical field of automotive welding terminals. It includes an aluminum layer plate and a copper layer plate. The aluminum layer plate and the copper layer plate are welded to form a copper-aluminum composite plate. A connection through-hole is provided at one end of the copper-aluminum composite plate, and a welding area is provided at the other end of the copper-aluminum composite plate. Compared with the traditional copper-aluminum terminal, the copper-aluminum composite terminal of the present invention changes from a tubular design with a copper head material and an aluminum tail material to a flat design with an aluminum upper layer and a copper lower layer. During welding, the aluminum wire contacts the aluminum layer plate, avoiding various problems of dissimilar metal welding, reducing the welding cost and the development cost of the terminal, improving the mechanical properties and electrical properties at the welding point. The lower layer metal is copper, which can meet the requirement of copper-copper contact conduction at the contact point, avoiding risks such as excessive contact point resistance and ablation. The flat design avoids the disadvantages of a larger crimping tail, and can better meet the requirements of high-voltage harness space layout.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive welding terminals, and particularly to a copper-aluminum composite welding terminal, a manufacturing device thereof, and a manufacturing method thereof. Background Art

[0002] With the rapid development of new energy vehicles and the proposed lightweight requirements, the application of aluminum wires in the field of automotive wire harnesses is in a stage of rapid growth. There are the following drawbacks in the connection between existing aluminum wires and terminals:

[0003] If aluminum terminals are used: problems such as "the strength and hardness of aluminum terminals cannot meet the usage requirements", "aluminum terminals will creep at high temperatures, thus affecting the usage performance", and "if aluminum terminals are used, since the final connecting components are usually copper components, the contact points between aluminum terminals and connecting components are copper-aluminum contacts for current conduction. After a long time of copper-aluminum contact, the contact resistance will increase, the temperature will rise, and the corrosion will intensify" will occur;

[0004] If copper terminals are used: due to the cleanliness and coating of the copper terminal surface affecting the welding effect, the welding difficulty, welding cost, and terminal design cost of copper terminals and aluminum wires are increased invisibly;

[0005] If copper-aluminum terminals are used: the current copper-aluminum terminals are produced by friction welding process. The head material of the copper-aluminum terminal is copper, and the tail material is aluminum. Restricted by the process of friction welding, the current copper-aluminum terminals can only be made into tubular shapes, which are expensive. And due to the tubular design, there are great drawbacks in the crimping tail during the crimping process (the tubular design of the existing copper-aluminum terminals can be referred to the prior art 201620769161.1 Figure 1 as shown), resulting in the inability to meet the requirements of high-voltage wire harness space layout in many cases. Summary of the Invention

[0006] The present invention provides a copper-aluminum composite welding terminal and a manufacturing device and a manufacturing method thereof, which are used to solve the above-mentioned problems that if aluminum terminals are used: "the strength and hardness of the aluminum terminals cannot meet the use requirements", "the aluminum terminals will produce creep at high temperatures, thereby affecting the use performance" and "if aluminum terminals are used, since the final connecting component is usually a copper component, the contact point between the aluminum terminal and the connecting component is the copper-aluminum contact to conduct current, and the contact resistance, temperature and corrosion will increase after the copper and aluminum contact time is long"; if copper terminals are used: since the cleanliness and plating of the copper terminal surface will affect the welding effect, the welding difficulty, welding cost and terminal design cost of the copper terminal and the aluminum conductor are virtually increased; and if copper-aluminum terminals are used: the copper-aluminum terminals currently used are produced by friction welding technology, the head material of the copper-aluminum terminals is copper, and the tail material is aluminum. Due to the friction welding process, the copper-aluminum terminals can only be made into tubular shapes at present, which are expensive, and because the tubular design has the disadvantage of a large crimping tail during the crimping process, resulting in many times failing to meet at least one technical problem in the requirements for the spatial arrangement of the high-voltage wiring harness.

[0007] In order to solve the above technical problems, the present invention discloses a copper-aluminum composite welding terminal, comprising an aluminum layer plate and a copper layer plate. The aluminum layer plate and the copper layer plate are welded to form a copper-aluminum composite plate. A connecting through hole is opened at one end of the copper-aluminum composite plate, and a welding area is provided at the other end of the copper-aluminum composite plate.

[0008] A copper-aluminum composite welding terminal manufacturing device comprises a welding table, on which a material conveying roller assembly 1 and a material conveying roller assembly 2 are arranged, the material conveying roller assembly 1 and the material conveying roller assembly 2 are respectively used to convey copper strips and aluminum strips, the material conveying roller assembly 1 is provided with a copper plate hot rolling machine, a copper plate cooling bin, a copper plate cold rolling machine, a copper plate segmenting machine, an explosive rolling unit, a punching and bending machine and a terminal cutting machine in sequence along its conveying direction, and the material conveying roller assembly 2 is provided with an aluminum plate hot rolling machine, an aluminum plate cooling bin, an aluminum plate cold rolling machine, an aluminum plate segmenting machine and a steering turntable assembly in sequence along its conveying direction.

[0009] Preferably, the steering turntable assembly includes a turntable chute opened on the welding table. An electric lead screw I is rotatably connected in the turntable chute. A lead screw nut I is threadedly connected to the electric lead screw I. The lead screw nut I is slidably connected in the turntable chute. A table body storage cylinder is fixedly connected to the lead screw nut I. An electric support column is slidably connected up and down in the table body storage cylinder. A turntable main body is rotatably connected to the electric support column. An electric lead screw II is rotatably connected in the turntable main body. A lead screw nut II is threadedly connected to the electric lead screw II. The lead screw nut II is slidably connected in the nut guiding groove of the turntable main body. A clamping plate I is fixedly connected to the lead screw nut II. An L-shaped bracket is fixedly connected to the clamping plate I. An electric lead screw III is rotatably connected to the L-shaped bracket. A lead screw nut III is threadedly connected to the electric lead screw III. The lead screw nut III is slidably connected up and down on the L-shaped bracket, and a clamping plate II is sleeved on its circumference.

[0010] Preferably, the explosive rolling unit includes an explosion assisting mechanism and an explosive rolling mill. Clamping and fixing groups are arranged on both the left and right sides of the explosive rolling mill. The explosion assisting mechanism is used to clean the surface of the copper strip and spray explosives on its upper surface. The explosive rolling mill is used to roll the stacked copper strips and aluminum strips to form a copper-aluminum composite strip. The clamping and fixing groups are used to clamp and position the copper strips.

[0011] Preferably, the explosion assisting mechanism includes a transverse guide rail, a longitudinal guide rail and an auxiliary execution mechanism. The transverse guide rail is fixedly connected to the welding table. The longitudinal guide rail is slidably connected to the transverse guide rail. The auxiliary execution mechanism is slidably connected to the longitudinal guide rail. A feeding member is fixedly connected to the auxiliary execution mechanism. An auxiliary execution block is installed at the working end of the feeding member.

[0012] Preferably, the auxiliary execution block includes an execution block housing. The execution block housing is of an n-shaped structure. Two symmetrically arranged component installation cavities and two symmetrically arranged powder storage cavities are opened in the execution block housing. The outlet end of the powder storage cavity is threadedly connected with a powder outlet cylinder. A number of uniformly arranged one-way powder outlet holes are provided on the bottom surface of the powder outlet cylinder. An air inlet channel is opened at the top of the powder storage cavity. A one-way valve is arranged in the air inlet channel. A guiding rod member is fixedly connected in the component installation cavity. A T-shaped piston is slidably connected up and down on the guiding rod member. The working end of the T-shaped piston is slidably connected in the powder storage cavity. One end of the T-shaped piston far from the powder storage cavity is fixedly connected with an electric wedge block. A reset elastic member is sleeved on the T-shaped piston. Two symmetrically arranged intermediate gears are rotatably connected in the component installation cavity. A wedge-shaped rack and an L-shaped rack are respectively meshed on both sides of the intermediate gear. The wedge-shaped rack can cooperate with the electric wedge block. One end of the L-shaped rack far from the intermediate gear is slidably connected with a surface cleaning and adsorbing head;

[0013] An electric spark generator is arranged at the bottom of the auxiliary execution block.

[0014] Preferably, a material guiding plate is provided at the output end of the first material conveying roller assembly. The end of the material guiding plate away from the first material conveying roller assembly is located above the material sorting box, and the material sorting box is used for sorting the remaining material section of the composite strip and a plurality of finished copper-aluminum composite welding terminals output by the first material conveying roller assembly.

[0015] Preferably, a screen is slidably connected to the funnel opening of the material sorting box. A buffer assembly is provided below the screen. A quality inspection camera and a rejection manipulator are hinged to the bottom of the buffer assembly. The rejection manipulator is electrically connected to the quality inspection camera. A rejection opening is provided on the material sorting box. A terminal storage assembly is provided below the quality inspection camera and the rejection manipulator;

[0016] The terminal storage assembly includes a first adsorption electromagnet and a second adsorption electromagnet. Both the first adsorption electromagnet and the second adsorption electromagnet are electrically connected to the quality inspection camera. The first adsorption electromagnet and the second adsorption electromagnet are connected by a connecting elastic member. The second adsorption electromagnet is fixedly connected to the bottom of the terminal storage box. A terminal storage cavity is provided in the terminal storage box. Two symmetrically arranged wedge-shaped block connecting rods are fixedly connected to the bottom inner wall of the material sorting box. The wedge-shaped block connecting rods penetrate through the terminal storage box. A first wedge-shaped block is fixedly connected to the wedge-shaped block connecting rods. Two symmetrically arranged sliding plates are slidably connected to the terminal storage box. One end of the sliding plate is arc-shaped. The other end of the sliding plate is fixedly connected to a second wedge-shaped block. The first wedge-shaped block is used to cooperate with the second wedge-shaped block.

[0017] Preferably, the buffer assembly includes two symmetrically arranged buffer inclined plates. The buffer inclined plates are rotatably connected in the material sorting box. One end of the buffer inclined plate is connected to the inner wall of the material sorting box through an inclined plate buffer elastic member. Two symmetrically arranged bent rods are rotatably connected in the material sorting box. A contact rod is sleeved on the bent rod. The contact rod is used to cooperate with the buffer inclined plate.

[0018] A method for manufacturing copper-aluminum composite welding terminals includes the following steps:

[0019] Step 1: The copper plate strip is conveyed by the first material conveying roller assembly and sequentially passes through a copper plate hot rolling machine, a copper plate cooling bin, a copper plate cold rolling machine, and a copper plate cutting machine to complete the processes of hot rolling, cooling, cold rolling, and cutting, and finally form a cut copper plate strip. At the same time, the aluminum plate strip sequentially passes through an aluminum plate hot rolling machine, an aluminum plate cooling bin, an aluminum plate cold rolling machine, and an aluminum plate cutting machine, and is finally formed into a cut aluminum plate strip after being hot rolled, cooled, cold rolled, and cut in sequence;

[0020] Step 2: The explosion rolling unit cleans the surface of the cut copper plate strip and sprays an explosive on its upper surface. Then, the cut aluminum plate strip is placed on the upper surface of the cut copper plate strip through the steering turntable assembly. After detonation, the cut copper plate strip and the cut aluminum plate strip are synchronously conveyed forward and finally rolled into a copper-aluminum composite strip;

[0021] Step 3: After the copper-aluminum composite strip is conveyed to the punching and bending machine, the punching and bending machine performs intermittent bending on it and punches holes to form connecting holes and welding areas;

[0022] Step 4: The copper-aluminum composite strip after bending and punching continues to move forward to the terminal cutting machine. The terminal cutting machine cuts the copper-aluminum composite strip at intervals based on the preset terminal shape and size, and finally forms a hollow composite strip residual section and several finished copper-aluminum composite welding terminals.

[0023] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention adopts a copper-aluminum composite welding terminal to replace the traditional aluminum terminal and copper terminal, thereby avoiding the problems of "the strength and hardness of the aluminum terminal cannot meet the use requirements", "the aluminum terminal will produce creep at high temperature, thereby affecting the use performance", and "if the aluminum terminal is used, since the final connecting component is usually a copper component, the contact point between the aluminum terminal and the connecting component is the copper-aluminum contact conduction current, and the contact resistance, temperature and corrosion of the copper and aluminum will increase over time" when the aluminum terminal is used. In addition, the present invention avoids the problems of "the cleanliness and plating of the copper terminal surface will affect the welding effect, thereby virtually increasing the welding difficulty, welding cost and terminal cost of the copper terminal and the aluminum wire" when the copper terminal is used. The copper-aluminum composite terminal of the present invention has made changes in shape and structure compared with the traditional copper-aluminum terminal, from the traditional tubular design with copper as the head material and aluminum as the tail material to the flat design with aluminum as the upper layer and copper as the lower layer. During welding, the aluminum conductor and the aluminum layer plate are in contact, which avoids various problems of welding dissimilar metals, reduces the process control cost and the development cost of the terminal, and improves the mechanical and electrical properties of the welding point. The lower metal is copper, which can meet the copper-copper contact conductivity of the contact point, avoids the risks of excessive resistance at the contact point, ablation, etc. The flat design avoids the disadvantage of a large crimping tail, thereby better meeting the requirements of the spatial layout of the high-voltage wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the copper-aluminum composite welding terminal of the present invention;

[0028] Figure 2 A top view of the copper-aluminum composite welding terminal manufacturing equipment of the present invention;

[0029] Figure 3 This is the front view of the manufacturing equipment for the copper-aluminum composite welding terminal of the present invention;

[0030] Figure 4 This is the schematic structural diagram of the steering turntable assembly of the present invention;

[0031] Figure 5 This is the schematic structural diagram of the auxiliary execution mechanism of the present invention;

[0032] Figure 6 This is the schematic structural diagram of the auxiliary execution block of the present invention;

[0033] Figure 7 This is the schematic structural diagram of the material classification box of the present invention.

[0034] In the figure: 1. Aluminum layer plate; 2. Copper layer plate; 3. Connecting through hole; 4. Welding area; 5. Welding table; 500. Material conveying roller assembly one; 5000. Turntable main body; 5001. Electric lead screw two; 5002. Lead screw nut two; 5003. Nut guiding groove; 5004. Clamping plate one; 5005. Electric lead screw three; 5006. L-shaped bracket; 5007. Lead screw nut three; 5008. Clamping plate two; 501. Material conveying roller assembly two; 502. Copper plate hot rolling mill; 503. Copper plate cooling bin; 504. Copper plate cold rolling mill; 505. Copper plate cutting machine; 506. Explosion rolling unit; 5060. Explosion rolling machine; 5061. Clamping and fixing group; 507. Punching and bending machine; 508. Copper plate strip; 5080. Terminal cutting machine; 509. Aluminum plate strip; 5010. Aluminum plate hot rolling mill; 5011. Aluminum plate cooling bin; 5012. Aluminum plate cold rolling mill; 5013. Aluminum plate cutting machine; 5014. Steering turntable assembly; 5015. Turntable chute; 5016. Electric lead screw one; 5017. Lead screw nut one; 5018. Table body storage cylinder; 5019. Electric support column; 6. Explosion assistance mechanism; 600. Horizontal guide rail; 601. Vertical guide rail; 602. Auxiliary execution mechanism; 603. Auxiliary execution block; 6030. Execution block housing; 6031. Component installation cavity; 6032. Powder storage cavity; 6033. Powder outlet cylinder; 6034. One-way powder outlet hole; 6035. Guide rod; 6036. T-shaped piston; 6037. Electric wedge block; 6038. Reset elastic member; 6039. Intermediate gear; 604. Wedge rack; 6040. L-shaped rack; 6041. Surface cleaning and adsorption head; 7. Material guiding plate; 700. Material classification box; 7000. Sieve mesh; 7001. Quality inspection camera; 7002. Rejection manipulator; 701. Buffer assembly; 7010. Buffer inclined plate; 7011. Inclined plate buffer elastic member; 7012. Bent rod; 7013. Contact rod; 702. Terminal storage assembly; 7020. Adsorption electromagnet one; 7021. Adsorption electromagnet two; 7022. Connecting elastic member; 7023. Terminal storage box; 7024. Wedge block connecting rod; 7025. Wedge block one; 7026. Slide plate; 7027. Wedge block two; 7028. Rejection port; 7029. Terminal storage cavity. Detailed implementation manners

[0035] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0036] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence. Nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention provides the following embodiments Embodiment

[0038] An embodiment of the present invention provides a copper-aluminum composite welding terminal, as Figures 1 - 7 shown, including an aluminum layer plate 1 and a copper layer plate 2. The aluminum layer plate 1 and the copper layer plate 2 are welded to form a copper-aluminum composite plate. A connection through hole 3 is provided at one end of the copper-aluminum composite plate, and a welding area 4 is provided at the other end of the copper-aluminum composite plate.

[0039] A method for manufacturing a copper-aluminum composite welding terminal includes the following steps:

[0040] Step 1: The copper plate strip 508 is sequentially conveyed by the material conveying roller assembly 500 through the copper plate hot rolling mill 502, the copper plate cooling bin 503, the copper plate cold rolling mill 504, and the copper plate cutting machine 505 to complete the processes of hot rolling, cooling, cold rolling, and cutting, and finally form a cut copper plate strip. At the same time, the aluminum plate strip 509 passes through the aluminum plate hot rolling mill 5010, the aluminum plate cooling bin 5011, the aluminum plate cold rolling mill 5012, and the aluminum plate cutting machine 5013 in sequence, and is finally formed into a cut aluminum plate strip after being hot rolled, cooled, cold rolled, and cut in sequence;

[0041] Step 2: The explosion rolling unit 506 cleans the surface of the cut copper plate strip and sprays an explosive on its upper surface. Then, the cut aluminum plate strip is placed on the upper surface of the cut copper plate strip through the steering turntable assembly 5014. After detonation, the cut copper plate strip and the cut aluminum plate strip are synchronously conveyed forward and finally formed into a copper-aluminum composite strip by rolling;

[0042] Step 3: After the copper-aluminum composite strip is conveyed to the punching and bending machine 507, the punching and bending machine 507 performs intermittent bending on it, and at the same time punches it to form the connection through hole 3 and the welding area 4;

[0043] Step 4: The copper-aluminum composite strip after bending and punching continues to move forward to the terminal cutting machine 5080. The terminal cutting machine 5080 cuts the copper-aluminum composite strip at intervals based on the preset terminal shape and size, and finally forms a hollow composite strip residual material section and a plurality of finished copper-aluminum composite welding terminals.

[0044] The working principle and beneficial effects of the above technical solution are as follows: when welding the aluminum wire to the copper-aluminum composite welding terminal, the aluminum wire is placed on the upper surface of the end of the aluminum layer plate 1 away from the connecting through hole 3, and the welding length and welding position of the aluminum wire are determined with the welding area 4 as a reference mark, and then the contact position of the aluminum wire and the copper-aluminum composite plate is welded by a welding machine. After welding, the end of the finished terminal close to the connecting through hole 3 is placed on the finished copper component to be connected, and the copper-aluminum composite welding terminal is installed by connecting the connecting through hole 3 with any one of the bolts and nuts, plugs and sockets or spring clamps. The terminal structure of the present invention is set in an asymmetric form, and the aluminum layer plate (1) and the copper layer plate (2) are both single-layer or multi-layer;

[0045] The present invention adopts copper-aluminum composite welding terminals to replace traditional aluminum terminals and copper terminals, avoiding the problems of "the strength and hardness of the aluminum terminals cannot meet the use requirements", "the aluminum terminals will produce creep at high temperatures, thereby affecting the use performance", and "if aluminum terminals are used, since the final connecting component is usually a copper component, the contact point between the aluminum terminal and the connecting component is the copper-aluminum contact to conduct current, and the contact resistance, temperature and corrosion will increase over time after the copper and aluminum are in contact", and avoiding the problem of "the cleanliness and plating of the copper terminal surface will affect the welding effect, which will invisibly increase the welding difficulty, welding cost and terminal design cost of the copper terminal and the aluminum wire" when using copper terminals. At the same time, the copper-aluminum composite terminal of the present invention is better than traditional The traditional copper-aluminum terminal has been changed in shape and structure, from the traditional tubular design with copper as the head material and aluminum as the tail material to a flat design with aluminum as the upper layer and copper as the lower layer. During welding, the aluminum conductor contacts the aluminum layer plate 1, avoiding various problems of welding dissimilar metals, reducing the process control cost and the development cost of the terminal, and improving the mechanical and electrical properties of the weld. The lower metal is copper, which can meet the copper-copper contact conductivity of the contact point and avoid the risks of excessive resistance at the contact point and ablation. The flat design avoids the disadvantage of a larger crimped tail, thereby better meeting the requirements of the spatial layout of the high-voltage wiring harness. The design of the copper-aluminum composite terminal of the present invention avoids the shortcomings of a single material, concentrates the advantages of two materials, can optimize the welding process, and reduce the cost of copper-aluminum terminals. Example

[0046] On the basis of Embodiment 1, a copper-aluminum composite welding terminal manufacturing device includes a welding table 5. On the welding table 5, there are a first material conveying roller assembly 500 and a second material conveying roller assembly 501. The first material conveying roller assembly 500 and the second material conveying roller assembly 501 are respectively used for conveying copper plate strips 508 and aluminum plate strips 509. Along the conveying direction of the first material conveying roller assembly 500, there are successively arranged a copper plate hot rolling mill 502, a copper plate cooling bin 503, a copper plate cold rolling mill 504, a copper plate cutting machine 505, an explosive rolling unit 506, a punching and bending machine 507, and a terminal cutting machine 5080. Along the conveying direction of the second material conveying roller assembly 501, there are successively arranged an aluminum plate hot rolling mill 5010, an aluminum plate cooling bin 5011, an aluminum plate cold rolling mill 5012, an aluminum plate cutting machine 5013, and a steering turntable assembly 5014.

[0047] The working principle and beneficial effects of the above technical solution are as follows: During operation, the red-hot copper strip 508 and aluminum strip 509 are respectively input from the input ends of the material conveying roller assembly one 500 and the material conveying roller assembly two 501. As the copper strip 508 is conveyed by the material conveying roller assembly one 500, it first passes through the hot rolling of the copper plate hot rolling machine 502 and is flattened to an appropriate thickness, and then is conveyed to the copper plate cooling bin 503. The copper plate cooling bin 503 cools it to restore its temperature to normal temperature. Then, the copper strip 508 is continuously conveyed to the copper plate cold rolling machine 504. After cold rolling by the copper plate cold rolling machine 504, the strength, hardness, and accuracy of the shape and size of the copper strip 508 are further improved. Then, the copper strip 508 is conveyed to the copper plate cutting machine 505. The copper strip 508 is cut into a preset length by the copper plate cutting machine 505 and then continues to be conveyed forward to the appropriate position corresponding to the explosive rolling unit 506, waiting for explosive rolling. While the copper strip 508 is being conveyed, the aluminum strip 509 also passes through the aluminum plate hot rolling machine 5010, the aluminum plate cooling bin 5011, the aluminum plate cold rolling machine 5012, and the aluminum plate cutting machine 5013 in sequence. After being hot rolled, cooled, cold rolled, and cut in sequence, it is conveyed to the steering turntable assembly 5014. Then, the steering turntable assembly 5014 rotates 90 degrees so that the aluminum strip 509 on the steering turntable assembly 5014 is parallel to the copper strip 508 on the material conveying roller assembly one 500. Then, the steering turntable assembly 5014 carries the aluminum strip 509 and moves in the direction close to the material conveying roller assembly one 500, and finally places the aluminum strip 509 on it above the cut copper strip 508 on the material conveying roller assembly one 500. Then, the explosive rolling unit 506 welds the cut aluminum strip 509 above the copper strip 508 by explosive rolling method to form a copper-aluminum composite strip. Then, the material conveying roller assembly one 500 conveys the copper-aluminum composite strip to the punching and bending machine 507. The punching and bending machine 507 performs intermittent bending on the copper-aluminum composite strip, and at the same time punches it to form the connecting through holes 3 and the welding areas 4. The copper-aluminum composite strip after bending and punching continues to move forward to the terminal cutting machine 5080. The copper-aluminum composite strip is intermittently cut by the terminal cutting machine 5080 to finally form a composite strip blank section and several finished copper-aluminum composite welded terminals. Embodiment

[0048] On the basis of Embodiment 2, the steering turntable assembly 5014 includes a turntable chute 5015 formed on the welding table 5. An electric lead screw 5016 is rotatably connected in the turntable chute 5015. A lead screw nut 5017 is threadedly connected to the electric lead screw 5016. The lead screw nut 5017 is slidably connected in the turntable chute 5015. A table body storage cylinder 5018 is fixedly connected to the lead screw nut 5017. An electric support column 5019 is slidably connected up and down in the table body storage cylinder 5018. The electric support column 5019 is rotatably connected to a turntable main body 5000. An electric lead screw 5001 is rotatably connected in the turntable main body 5000. A lead screw nut 5002 is threadedly connected to the electric lead screw 5001. The lead screw nut 5002 is slidably connected in a nut guiding groove 5003 of the turntable main body 5000. A clamping plate 5004 is fixedly connected to the lead screw nut 5002. An L-shaped bracket 5006 is fixedly connected to the clamping plate 5004. An electric lead screw 5005 is rotatably connected to the L-shaped bracket 5006. A lead screw nut 5007 is threadedly connected to the electric lead screw 5005. The lead screw nut 5007 is slidably connected up and down on the L-shaped bracket 5006, and a clamping plate 5008 is sleeved on its circumference.

[0049] The working principle and beneficial effects of the above technical solution are as follows: The aluminum plate strip 509 is sent to the steering turntable assembly 5014 after passing through the aluminum plate hot rolling mill 5010, the aluminum plate cooling bin 5011, the aluminum plate cold rolling mill 5012, and the aluminum plate cutting machine 5013, and is located between the clamping plate 5004 and the clamping plate 5008. At this time, the turntable main body 5000 rotates 90 degrees so that the aluminum plate strip 509 on the steering turntable assembly 5014 is parallel to the copper plate strip 508 on the material conveying roller assembly 500. Then, the electric lead screw 5016 rotates to drive the lead screw nut 5017 to move, and the movement of the lead screw nut 5017 drives the turntable main body 5000 to move in the direction close to the material conveying roller assembly 500. When the turntable main body 5000 moves to the designated position, the electric lead screw 5001 rotates to drive the lead screw nut 5002 to move, and the movement of the lead screw nut 5002 drives the clamping plate 5004 and the clamping plate 5008 to clamp the cut aluminum plate strip 509 and move it in the direction close to the material conveying roller assembly 500. Then, the cut aluminum plate strip 509 is slowly placed above the cut copper plate strip 508. During the movement of the steering turntable assembly 5014, the electric support column 5019 can slide up and down along the inner wall of the table body storage cylinder 5018 to more flexibly adjust the height of the turntable main body 5000. At the same time, the electric lead screw 5005 can drive the lead screw nut 5007 to move up and down to flexibly adjust the distance between the clamping plate 5008 and the clamping plate 5004, so as to better clamp the aluminum plate strip 509 and flexibly adjust the distance between the clamping plate 5008 and the clamping plate 5004 based on the actual thickness of the aluminum plate strip 509. Embodiment

[0050] On the basis of Embodiment 2, the explosive rolling unit 506 includes an explosion assisting mechanism 6 and an explosive rolling mill 5060. Clamping and fixing groups 5061 are provided on both the left and right sides of the explosive rolling mill 5060. The explosion assisting mechanism 6 is used to clean the surface of the copper plate strip 508 and spray explosives onto its upper surface. The explosive rolling mill 5060 is used to roll the stacked copper plate strips 508 and aluminum plate strips 509 to form a copper-aluminum composite strip. The clamping and fixing group 5061 is used to clamp and position the copper plate strip 508;

[0051] The explosion assisting mechanism 6 includes a transverse guide rail 600, a longitudinal guide rail 601, and an auxiliary execution mechanism 602. The transverse guide rail 600 is fixedly connected to the welding table 5. The longitudinal guide rail 601 is slidably connected to the transverse guide rail 600. The auxiliary execution mechanism 602 is slidably connected to the longitudinal guide rail 601. A feeding member is fixedly connected to the auxiliary execution mechanism 602, and an auxiliary execution block 603 is installed at the working end of the feeding member;

[0052] The auxiliary execution block 603 includes an execution block housing 6030. The execution block housing 6030 is of an n-shaped structure. Two symmetrically arranged component installation cavities 6031 and two symmetrically arranged powder storage cavities 6032 are formed in the execution block housing 6030. The outlet end of the powder storage cavity 6032 is threadedly connected with a powder outlet tube 6033. A number of uniformly arranged one-way powder outlet holes 6034 are provided on the bottom surface of the powder outlet tube 6033. An air inlet channel is formed at the top of the powder storage cavity 6032, and a one-way valve is provided in the air inlet channel. A guiding rod 6035 is fixedly connected in the component installation cavity 6031. A T-shaped piston 6036 is slidably connected up and down on the guiding rod 6035. The working end of the T-shaped piston 6036 is slidably connected in the powder storage cavity 6032. One end of the T-shaped piston 6036 away from the powder storage cavity 6032 is fixedly connected with an electric wedge block 6037. A reset elastic member 6038 is sleeved on the T-shaped piston 6036. Two symmetrically arranged intermediate gears 6039 are rotatably connected in the component installation cavity 6031. A wedge-shaped rack 604 and an L-shaped rack 6040 are respectively meshed on both sides of the intermediate gear 6039. The wedge-shaped rack 604 can cooperate with the electric wedge block 6037. One end of the L-shaped rack 6040 away from the intermediate gear 6039 is slidably connected with a surface cleaning and adsorption head 6041;

[0053] An electric spark generator is provided at the bottom of the auxiliary execution block 603.

[0054] The working principle and beneficial effects of the above technical solution are as follows: When the explosive rolling unit 506 is working, first, the explosion assistance mechanism 6 cleans the surface of the copper strip 508 and sprays explosives on its upper surface. When cleaning the copper strip 508, to prevent the copper strip 508 from being misaligned during the cleaning process, the working ends of the clamping and fixing group 5061 move towards each other to clamp the sides of the copper strip 508 to be cleaned, thereby playing a positioning role for the copper strip 508 and preventing the copper strip 508 from being misaligned during the cleaning process. After the cleaning and spraying of explosives are completed, the turning turntable assembly 5014 places the cut aluminum strip 509 on the copper strip 508 covered with explosives. At this time, the clamping and fixing group 5061 clamps the sides of the stacked copper strip 508 and aluminum strip 509. Then, the explosion assistance mechanism 6 detonates the explosives. After the detonation ends, the material conveying roller assembly one 500 immediately starts, and continues to convey the stacked assembly composed of the copper strip 508 and the aluminum strip 509 forward to the explosive rolling mill 5060, and rolls them when the copper strip 508 and the aluminum strip 509 have the remaining temperature of the explosion, and finally forms a copper-aluminum composite strip;

[0055] Specifically, when the explosion assistance mechanism 6 performs cleaning, the auxiliary execution mechanism 602 slides along the longitudinal guide rail 601 to an appropriate position, so that the two surface cleaning suction heads 6041 are located directly above the copper strip 508. Then, the auxiliary execution mechanism 602 adjusts the height of the auxiliary execution block 603 through the feeding member, so that the surface cleaning suction head 6041 contacts the upper surface of the copper strip 508. Then, the transverse guide rail 600 slides along the longitudinal guide rail 601, and during the sliding process of the transverse guide rail 600, the surface cleaning suction head 6041 slides along the upper surface of the copper strip 508, thereby playing a role in cleaning the upper surface of the copper strip 508. When fine-tuning the position of the surface cleaning suction head 6041, it can be achieved by sliding the surface cleaning suction head 6041 along the L-shaped rack 6040;

[0056] When spraying explosives, the electric wedge block 6037 reciprocally slides along the guiding rod 6035, thereby driving the T-shaped piston 6036 to reciprocally slide along the powder storage chamber 6032. During the process of the T-shaped piston 6036 reciprocally sliding along the powder storage chamber 6032, external air enters the powder storage chamber 6032 through the air intake channel, and then the air pressure presses the explosive powder in the powder storage chamber 6032 out through the one-way powder outlet hole 6034. The pressed-out explosive powder will fall on the upper surface of the copper plate strip 508. During this process, the longitudinal guide rail 601 has been sliding along the transverse guide rail 600. Before spraying explosives, the height of the surface cleaning suction head 6041 and the width between the two opposite surface cleaning suction heads 6041 can be adjusted first, so that the surface cleaning suction head 6041 is exactly above the material conveying roller assembly 500 and exactly at the edge of the copper plate strip 508. Thus, when spraying explosives, the electric wedge block 6037 can push the wedge-shaped rack 604 to slide, the wedge-shaped rack 604 drives the L-shaped rack 6040 to slide left and right, and the L-shaped rack 6040 drives the surface cleaning suction head 6041 to slide left and right, so that when spraying explosives, the explosives splashed on the material conveying roller assembly 500 and located outside the copper plate strip 508 can be adsorbed and recovered. Since the surface cleaning suction head 6041 can reciprocate left and right, the thoroughness of explosive recovery is ensured, and the safety of subsequent ignition is also ensured;

[0057] When igniting the explosives, by adjusting the height and position of the auxiliary actuator block 603, the electric spark generator at the bottom of the auxiliary actuator block 603 is in contact with the side surface of the contact surfaces of the copper plate strip 508 and the aluminum plate strip 509. Then, the longitudinal guide rail 601 slides along the transverse guide rail 600 and the electric spark generator is started at the same time, so as to fully ignite the explosives. Embodiment

[0058] On the basis of Embodiment 2, a guide plate 7 is provided at the output end of the material conveying roller assembly 500. One end of the guide plate 7 far away from the material conveying roller assembly 500 is located above the material classification box 700, and the material classification box 700 is used for classifying the composite strip waste section output by the material conveying roller assembly 500 and several finished copper-aluminum composite welding terminals;

[0059] A screen 7000 is slidably connected at the funnel opening of the material classification box 700. A buffer assembly 701 is provided below the screen 7000. A quality inspection camera 7001 and a rejection manipulator 7002 are hinged at the bottom of the buffer assembly 701. The rejection manipulator 7002 is electrically connected to the quality inspection camera 7001. A rejection opening 7028 is opened on the material classification box 700. A terminal storage assembly 702 is provided below the quality inspection camera 7001 and the rejection manipulator 7002;

[0060] The terminal storage component 702 includes an adsorption electromagnet 7020 and an adsorption electromagnet 7021. Both the adsorption electromagnet 7020 and the adsorption electromagnet 7021 are electrically connected to the quality inspection camera 7001. The adsorption electromagnet 7020 and the adsorption electromagnet 7021 are connected by a connecting elastic member 7022. The adsorption electromagnet 7021 is fixedly connected to the bottom of the terminal storage box 7023. A terminal storage cavity 7029 is provided in the terminal storage box 7023. At the bottom of the inner wall of the material classification box 700, two symmetrically arranged wedge-shaped block connecting rods 7024 are fixedly connected. The wedge-shaped block connecting rods 7024 penetrate through the terminal storage box 7023. A wedge-shaped block 7025 is fixedly connected to the wedge-shaped block connecting rods 7024. Two symmetrically arranged sliding plates 7026 are slidably connected to the terminal storage box 7023. One end of the sliding plate 7026 is arc-shaped. The other end of the sliding plate 7026 is fixedly connected to a wedge-shaped block 7027. The wedge-shaped block 7025 is used to cooperate with the wedge-shaped block 7027;

[0061] The buffer component 701 includes two symmetrically arranged buffer inclined plates 7010. The buffer inclined plates 7010 are rotatably connected in the material classification box 700. One end of the buffer inclined plates 7010 is connected to the inner wall of the material classification box 700 through an inclined plate buffer elastic member 7011. Two symmetrically arranged bent rods 7012 are rotatably connected in the material classification box 700. A contact rod 7013 is sleeved on the bent rods 7012. The contact rod 7013 is used to cooperate with the buffer inclined plates 7010.

[0062] The working principle and beneficial effects of the above technical solution are as follows: The waste material section of the composite strip and several finished copper-aluminum composite welded terminals fall into the material classification box 700 through the guide plate 7. Among them, the waste material section of the composite strip is filtered under the action of the sieve 7000. The finished copper-aluminum composite welded terminals pass through the sieve 7000 and fall onto the terminal storage component 702. After being buffered by the buffer inclined plates 7010, they fall onto the sliding plates 7026. Then, the rejection manipulator 7002 toggles the finished copper-aluminum composite welded terminals on the sliding plates 7026. During the process of toggling the finished copper-aluminum composite welded terminals, the quality inspection camera 7001 inspects the finished copper-aluminum composite welded terminals. When the quality inspection camera 7001 detects a non-conforming terminal, the rejection manipulator 7002 is activated to remove the terminal from the rejection port 7028. When all the terminals on the sliding plates 7026 pass the quality inspection, the quality inspection camera 7001 controls the adsorption electromagnet 7020 and the adsorption electromagnet 7021 to be energized through the controller. When the adsorption electromagnet 7020 and the adsorption electromagnet 7021 are energized, they drive the terminal storage box 7023 to move downward. During the downward movement of the terminal storage box 7023, the wedge-shaped block 7025 acts on the wedge-shaped block 7027, causing the two sliding plates 7026 to move in opposite directions, thus opening the inlet. The terminals on the sliding plates 7026 enter the terminal storage cavity 7029 through the inlet for storage;

[0063] When adjusting the angle of the buffer inclined plate 7010, the bent rod 7012 rotates to drive the abutting rod 7013 to move, and the movement of the abutting rod 7013 thus pushes the buffer inclined plate 7010 to realize the adjustment of the angle.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A copper-aluminum composite welding terminal manufacturing device, characterized in that: It includes a soldering table (5), on which there are a first material conveying roller assembly (500) and a second material conveying roller assembly (501). The first material conveying roller assembly (500) and the second material conveying roller assembly (501) are respectively used to convey copper strip (508) and aluminum strip (509). Along its conveying direction, the first material conveying roller assembly (500) is successively provided with a copper hot rolling mill (502), a copper cooling bin (503), a copper cold rolling mill (504), a copper cutting machine (505), an explosive rolling unit (506), a punching and bending machine (507) and a terminal cutting machine (5080). Along its conveying direction, the second material conveying roller assembly (501) is successively provided with an aluminum hot rolling mill (5010), an aluminum cooling bin (5011), an aluminum cold rolling mill (5012), an aluminum cutting machine (5013) and a steering turntable assembly (5014); A guide plate (7) is provided at the output end of the first material conveying roller assembly (500). One end of the guide plate (7) away from the first material conveying roller assembly (500) is located above a material sorting box (700). The material sorting box (700) is used to sort the composite strip remnant segments and several finished copper-aluminum composite soldering terminals output by the first material conveying roller assembly (500); A screen (7000) is slidably connected at the funnel opening of the material sorting box (700). A buffer assembly (701) is provided below the screen (7000). The bottom of the buffer assembly (701) is hingedly connected with a quality inspection camera (7001) and a rejection manipulator (7002). The rejection manipulator (7002) is electrically connected with the quality inspection camera (7001). A rejection opening (7028) is formed on the material sorting box (700). A terminal storage assembly (702) is provided below the quality inspection camera (7001) and the rejection manipulator (7002); The terminal storage assembly (702) includes a first adsorption electromagnet (7020) and a second adsorption electromagnet (7021). Both the first adsorption electromagnet (7020) and the second adsorption electromagnet (7021) are electrically connected with the quality inspection camera (7001). The first adsorption electromagnet (7020) and the second adsorption electromagnet (7021) are connected by a connecting elastic member (7022). The second adsorption electromagnet (7021) is fixedly connected to the bottom of a terminal storage box (7023). A terminal storage cavity (7029) is provided inside the terminal storage box (7023). Two symmetrically arranged wedge-shaped block connecting rods (7024) are fixedly connected to the bottom inner wall of the material sorting box (700). The wedge-shaped block connecting rods (7024) penetrate through the terminal storage box (7023). A first wedge-shaped block (7025) is fixedly connected to the wedge-shaped block connecting rods (7024). Two symmetrically arranged sliding plates (7026) are slidably connected to the terminal storage box (7023). One end of the sliding plate (7026) is arc-shaped. The other end of the sliding plate (7026) is fixedly connected to a second wedge-shaped block (7027). The first wedge-shaped block (7025) is used to cooperate with the second wedge-shaped block (7027); The explosion rolling unit (506) includes an explosion assistance mechanism (6) and an explosion rolling mill (5060). Clamping and fixing groups (5061) are provided on both the left and right sides of the explosion rolling mill (5060). The explosion assistance mechanism (6) is used to clean the surface of the copper plate strip (508) and spray explosives onto its upper surface. The aluminum plate strip (509) is placed on the upper surface of the copper plate strip (508). The explosion assistance mechanism (6) detonates the explosives, and the explosion rolling mill (5060) rolls the stacked copper plate strip (508) and aluminum plate strip (509) to form a copper-aluminum composite strip. The clamping and fixing group (5061) is used to clamp and position the copper plate strip (508). The copper-aluminum composite welding terminal includes an aluminum layer plate (1) and a copper layer plate (2). The aluminum layer plate (1) and the copper layer plate (2) are welded to form a copper-aluminum composite plate. A connection through-hole (3) is provided at one end of the copper-aluminum composite plate, and a welding area (4) is provided at the other end of the copper-aluminum composite plate.

2. The manufacturing equipment for a copper-aluminum composite welding terminal according to claim 1, characterized in that: The steering turntable assembly (5014) includes a turntable chute (5015) opened on the welding table (5). An electric lead screw one (5016) is rotatably connected in the turntable chute (5015). A lead screw nut one (5017) is threadedly connected to the electric lead screw one (5016). The lead screw nut one (5017) is slidably connected in the turntable chute (5015). A table body storage cylinder (5018) is fixedly connected to the lead screw nut one (5017). An electric support column (5019) is slidably connected up and down in the table body storage cylinder (5018). A turntable main body (5000) is rotatably connected to the electric support column (5019). An electric lead screw two (5001) is rotatably connected in the turntable main body (5000). A lead screw nut two (5002) is threadedly connected to the electric lead screw two (5001). The lead screw nut two (5002) is slidably connected in the nut guiding groove (5003) of the turntable main body (5000). A clamping plate one (5004) is fixedly connected to the lead screw nut two (5002). An L-shaped bracket (5006) is fixedly connected to the clamping plate one (5004). An electric lead screw three (5005) is rotatably connected to the L-shaped bracket (5006). A lead screw nut three (5007) is threadedly connected to the electric lead screw three (5005). The lead screw nut three (5007) is slidably connected up and down on the L-shaped bracket (5006), and a clamping plate two (5008) is sleeved on its circumference.

3. The manufacturing equipment for a copper-aluminum composite welding terminal according to claim 1, characterized in that: The explosion assistance mechanism (6) includes a horizontal guide rail (600), a vertical guide rail (601), and an auxiliary execution mechanism (602). The horizontal guide rail (600) is fixedly connected to the welding table (5). The vertical guide rail (601) is slidably connected to the horizontal guide rail (600). The auxiliary execution mechanism (602) is slidably connected to the vertical guide rail (601). A feeding member is fixedly connected to the auxiliary execution mechanism (602), and an auxiliary execution block (603) is installed at the working end of the feeding member.

4. The manufacturing equipment for a copper-aluminum composite welding terminal according to claim 3, wherein: The auxiliary execution block (603) includes an execution block housing (6030). The execution block housing (6030) is of an n-type structure. Inside the execution block housing (6030), there are two symmetrically arranged component installation cavities (6031) and two symmetrically arranged powder storage cavities (6032). The outlet end of the powder storage cavity (6032) is threadedly connected with a powder outlet tube (6033). The bottom surface of the powder outlet tube (6033) is provided with a number of uniformly arranged one-way powder outlet holes (6034). The top of the powder storage cavity (6032) is provided with an air inlet channel, and a one-way valve is arranged in the air inlet channel. A guiding rod (6035) is fixedly connected inside the component installation cavity (6031). A T-shaped piston (6036) is slidably connected up and down on the guiding rod (6035). The working end of the T-shaped piston (6036) is slidably connected inside the powder storage cavity (6032). One end of the T-shaped piston (6036) away from the powder storage cavity (6032) is fixedly connected with an electric wedge block (6037). A reset elastic member (6038) is sleeved on the T-shaped piston (6036). Inside the component installation cavity (6031), there are two symmetrically arranged intermediate gears (6039) rotatably connected. On both sides of the intermediate gear (6039), there are respectively engaged a wedge-shaped rack (604) and an L-shaped rack (6040). The wedge-shaped rack (604) can cooperate with the electric wedge block (6037). One end of the L-shaped rack (6040) away from the intermediate gear (6039) is slidably connected with a surface cleaning and adsorption head (6041); At the bottom of the auxiliary execution block (603), there is an electric spark generator.

5. The manufacturing equipment for a copper-aluminum composite welding terminal according to claim 1, wherein: The buffer assembly (701) includes two symmetrically arranged buffer inclined plates (7010). The buffer inclined plates (7010) are rotatably connected inside the material classification box (700). One end of the buffer inclined plate (7010) is connected with the inner wall of the material classification box (700) through an inclined plate buffer elastic member (7011). Inside the material classification box (700), there are two symmetrically arranged bent rods (7012) rotatably connected. A contact rod (7013) is sleeved on the bent rod (7012). The contact rod (7013) is used to cooperate with the buffer inclined plate (7010).

6. A manufacturing method for a copper-aluminum composite welding terminal, which is used to manufacture a copper-aluminum composite welding terminal by using the copper-aluminum composite welding terminal manufacturing equipment described in any one of claims 1-5, and is characterized in that: It includes the following steps: Step 1: The copper plate strip (508) is conveyed by the material conveying roller assembly one (500) and sequentially passes through the copper plate hot rolling mill (502), the copper plate cooling bin (503), the copper plate cold rolling mill (504) and the copper plate cutting machine (505) to complete the processes of hot rolling, cooling, cold rolling and cutting, and finally form a cut copper plate strip. At the same time, the aluminum plate strip (509) sequentially passes through the aluminum plate hot rolling mill (5010), the aluminum plate cooling bin (5011), the aluminum plate cold rolling mill (5012) and the aluminum plate cutting machine (5013), and is finally formed into a cut aluminum plate strip after being hot rolled, cooled, cold rolled and cut in sequence; Step 2: The explosion rolling unit (506) cleans the surface of the cut copper plate strip and sprays explosives on its upper surface. Then, the cut aluminum plate strip is placed on the upper surface of the cut copper plate strip through the steering turntable assembly (5014). After detonation, the cut copper plate strip and the cut aluminum plate strip are synchronously conveyed forward and finally rolled into a copper-aluminum composite strip; Step 3: After the copper-aluminum composite strip is conveyed to the punching and bending machine (507), the punching and bending machine (507) bends it intermittently, and at the same time punches it to form a connection through-hole (3) and a welding area (4); Step 4: The copper-aluminum composite strip after bending and punching continues to move forward to the terminal cutting machine (5080), and the terminal cutting machine (5080) intermittently cuts the copper-aluminum composite strip based on the preset terminal shape and size, and finally forms a hollow composite strip blank section and several finished copper-aluminum composite welding terminals.

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