CN114770033A - Copper foil flexible connection production method and automatic production system - Google Patents

Abstract

The invention relates to a copper foil flexible connection production method and an automatic production system, wherein the production method comprises the following steps of 1: forming a copper foil; and 2, step: collecting copper foil; and 3, step 3: finishing copper foil; and 4, step 4: copper foil welding; under the condition of low oxygen content, welding and fusing the stacked copper foils, and pressing the ends of the copper foils together to form a terminal; after welding, fusing and pressing the two ends, forming copper foil flexible connection; and 5: the copper foil is in flexible connection and cooled; and cooling the welded copper foil flexible connection under the condition of low oxygen content. The automatic production system comprises blanking equipment, a transfer line, a welding chamber, a through-wall delivery device, feeding and discharging equipment, a welding machine and a cooling device. The automatic material collecting and arranging device realizes automatic material collecting and arranging of a stamping connection line, automatic positioning and non-oxidation welding, automatic blanking and tray arrangement, unmanned operation of the whole station, and great improvement of production quality and efficiency.

Description

Copper foil flexible connection production method and automatic production system

technical field

The invention relates to a production method of copper foil flexible connection and an automatic production system applying the production method.

Background technique

In the field of high-current connection in electrical equipment, copper bars were used for connection in the past, but due to the limitations of equipment application conditions, a "copper foil flexible connection" product has been produced, which is a multi-layer about 0.1mm thick The copper foils are stacked together, and then both ends are melted and pressed by high-resolution diffusion welding as electrical connectors; the soft connection in the form of copper foil stacks has the following advantages: there is a gap between the copper foils, which is convenient for heat dissipation; Equipment displacement caused by vibration; larger surface area, more stable transmission current. Moreover, compared with the soft connection of copper braid, the soft connection of copper foil is easier to customize the size and can carry a larger current, so it is widely used in high-power electrical equipment, such as new energy vehicles.

The core of the copper foil soft connection is copper foil. According to the requirements, the coiled copper foil tape of the corresponding width is selected, and then the set length is cut, and several pieces are arranged into a stack, and then sent to the welding equipment, and the two ends are welded with copper blocks. form.

Because the copper foil is relatively thin, it is easy to conduct heat during welding, so that the part left outside the welding head is also heated to generate high temperature, that is, the operation risk is high, and the copper foil is easily oxidized when exposed to the air under high temperature conditions; in order to solve the problem of the copper foil The oxidation problem of the soft connection in the welding process is mainly caused by spraying a large amount of water on the copper foil outside the welding machine to cool it during the welding process. Therefore, after the product is welded, it needs to be supplemented by polishing and other processes to restore the surface of the copper foil soft connection to a bright metallic color, but the inner copper foil cannot be further processed.

Because the copper foil soft connection is used in the high current field, the current is mainly transmitted on the surface of the conductor due to the skin effect, so the surface quality of the copper foil will affect the final product application effect.

How to improve the welding quality of copper foil flexible connections, especially the surface quality of copper foils that are not involved in pressure welding after welding, is an important topic in the current copper foil flexible connection manufacturing field.

SUMMARY OF THE INVENTION

In order to achieve the above purpose, the present invention provides a production method of copper foil flexible connection, and on this basis, a set of automatic production system of copper foil flexible connection is designed, in order to meet the high-quality production of copper foil flexible connection, and at the same time reduce labor costs. quantity and improve production efficiency.

The first aspect of the present invention provides a copper foil flexible connection production method, comprising the following steps:

Step 1: copper foil forming; use punching equipment to punch out a single piece of copper foil from the copper foil strip;

Step 2: Collect copper foil; collect a single piece of copper foil, and transfer to the next process after collecting enough design pieces;

Step 3: Finishing the copper foil; finishing the copper foil, especially aligning both ends;

Step 4: Copper foil welding; under the condition of low oxygen content, the stacks of copper foils are welded and fused, and the ends of the copper foils are pressed together to form terminals; connect;

Step 5: Cool the copper foil soft connection; under the condition of low oxygen content, cool the welded copper foil soft connection; empty the welding machine station for the next copper foil soft connection to be welded; copper foil soft connection Cool down to a temperature below the temperature that no longer oxidizes and discolor under the condition of low oxygen content, preferably below a touch-safe temperature, and then transfer to the air environment for subsequent operations.

In the above steps 4 and 5, the environment with low oxygen content can be formed by vacuuming or filling with inert gas such as nitrogen.

In the above step 4, the oxygen content of the welded part is lower than 400PPM.

In the above step 5, due to the influence of oxygen content on the oxidation of the copper foil surface during the cooling process of the copper foil soft connection, with the decrease of the surface temperature of the copper foil, the upper limit threshold of the oxygen content gradually increases, so there is no fixed oxygen content standard. .

Based on the above-mentioned production method of copper foil flexible connection, the second aspect of the present invention provides an automatic production system for copper foil flexible connection, and runs the above-mentioned production method of copper foil flexible connection, which specifically includes punching equipment, transfer line, welding room, and delivery through the wall. equipment, loading and unloading equipment, welding machines, and cooling devices;

The punching equipment is used for forming the copper foil in step 1;

The transfer line is used to collect the single piece of copper foil in step 2, collect the single piece of copper foil produced by the punching equipment, and transfer it backward after reaching the designed quantity;

The welding room is a sealed operation room, at least wrapping the welding head;

The through-wall delivery device can pass through the wall surface of the welding chamber, and transfer the single stack of copper foils to be welded on the transfer line into the welding chamber;

In the loading and unloading equipment, the single-piece copper foil to be welded is stacked and clamped, and then placed in the welding machine;

Step 3 needs to be carried out before the single stack of copper foils to be welded is clamped and placed in the welding machine by the loading and unloading equipment. This step can be performed by the delivery line, the through-wall delivery device, or the loading and unloading equipment Any one of them can be carried out, or multiple stations can be carried out separately;

The welding machine implements step 4, welding under the condition of low oxygen content;

After the welding of the welding machine is completed, the welded copper foil soft connection is transferred to the cooling device, and the cooling is performed under the condition of low oxygen content.

As a further improvement of the present invention, the punching equipment is a punching machine, which is provided with a copper foil single-piece punching die;

One end of the delivery line is provided with a material receiving device; the material receiving device is matched with the punching equipment to collect the single copper foil;

The material receiving device is a reciprocating material receiving device, including a material receiving tray and a reciprocating driving mechanism;

The cross section of the material storage chamber of the material receiving tray matches the size of a single piece of copper foil to be collected;

The material receiving tray is mounted on a reciprocating driving mechanism composed of a reciprocating linear slide rail, a reciprocating linear sliding block, and a reciprocating driving element.

Further, the transfer line is provided with a transfer mechanism for picking up and placing the collected copper foil single-piece stack;

The transfer mechanism is a single-drive bidirectional moving mechanism, including a horizontal sliding rail, a horizontal sliding block, a vertical sliding rail, and a vertical sliding block; the horizontal sliding rail is horizontally fixed on the equipment support, and the horizontal sliding rail is sleeved The horizontal sliding block is provided; the horizontal sliding block and the vertical sliding block are vertically crossed and fixed, and the vertical sliding block is sleeved with the vertical sliding rail; the horizontal sliding rail, the horizontal sliding block The block, vertical slide rail and vertical slide block form a cross moving guide mechanism;

The bottom of the vertical slide rail is provided with a clamping mechanism, including a clamping driving cylinder and a clamping claw installed on the cylinder piston rod;

The upper part of the vertical slide rail is provided with a driving block, and the rear part of the driving block is a guide column;

The top of the horizontal slide rail is provided with a guide slideway, and the slide column connected to the rear of the driving block is inserted into the guide slideway; the guide slideway is an inverted "U"-shaped slideway, with There is a vertical guide slideway, the vertical slideway is matched with the guide slideway by the sliding column fixed on the upper part, and moves along the inverted "U" shape of the guide slideway;

A driving arm is also arranged in the lower middle of the guide slideway, a long driving slot is arranged in the middle of the driving arm, and the middle guide sliding column of the driving block is inserted into the driving slot;

One end of the driving arm is rotatably mounted on the lower middle part of the guide slideway through a rotating part; the rotating part is connected with a rotating driving element; the rotating driving element drives the rotating part to rotate, thereby driving the driving The arm swings back and forth, and the drive block is embedded in the drive slot of the drive arm, which in turn drives the drive block to move along the inverted "U"-shaped chute of the guide chute and the linear chute of the drive slot , so that the gripping claw at the bottom produces an inverted "U"-shaped trajectory.

As a further improvement of the present invention, a monolithic mechanism is provided on the delivery line for implementing step 3; the monolithic mechanism includes a monolithic driving element and a monolithic gripper;

The monolithic driving element is a clamping cylinder, the clamping cylinder is horizontally installed above the material receiving tray or the material storage tray provided on the delivery line, and the clamping cylinder is parallel to the length direction of the tray;

A pair of monolithic clamping jaws are installed on the monolithic driving element;

The monolithic jaws are located at both ends in the length direction of the tray; the two ends in the length direction of the tray are open openings;

The overall material mechanism includes a clamping mechanism installed in the delivery line, and the clamping mechanism is provided with clamping claws; the clamping claws perform inward clamping from both sides of the tray in the width direction.

As a further improvement of the present invention, the welding chamber is a closed chamber; an airtight window is opened on one side of the welding chamber, and a through-wall delivery device is installed on the side of the airtight window;

The through-wall delivery device includes an installation bracket, a telescopic table, and a telescopic drive mechanism; the installation bracket fixes the entire through-wall delivery device on the ground or other equipment supports; the upper part of the installation bracket is installed with the telescopic drive mechanism a driving mechanism, the telescopic table is installed on the telescopic driving mechanism;

The longitudinal section of the telescopic table matches the opening section of the airtight window, and the telescopic table is sleeved in the airtight window; Airtight window telescopic movement;

A material trough is arranged in the telescopic table;

The telescopic drive mechanism includes a linear drive mechanism and a linear guide mechanism;

The linear drive mechanism is a driving element and a driving block; the driving block is an output moving part of the driving element;

The driving block is fixed with the telescopic table through a telescopic connecting piece, so as to drive the telescopic table to perform telescopic movement;

The linear guide mechanism includes a telescopic linear slide block and a telescopic linear guide rod, the telescopic linear slide block is fixed on the bottom of the telescopic table, and the telescopic linear slide block is sleeved on the telescopic linear guide rod; The linear guide rod is fixed on the mounting bracket.

Further, the through-the-wall delivery device is further provided with a lifting mechanism for stacking single-piece copper foils to be welded;

The lifting mechanism includes a lifting driving element and a lifting bracket; the lifting bracket is mounted on the top of the lifting driving element; the lifting bracket is embedded in the lifting hollow of the material trough. In the cavity, the lifting driving element can drive the lifting bracket to rise, lift the single-piece stack of copper foil to be welded from the material tank, and leave the surface of the telescopic table, which is convenient for loading and unloading equipment to clamp hold.

Further, the lifting bracket is installed on the lifting and clamping driving element, the lifting and clamping driving element is a pair of clamping cylinders, and a pair of lifting brackets are installed on the clamping cylinder, and the lifting and clamping The lift bracket can be clipped inward.

As a further improvement of the present invention, the welding machine includes two independent pressure fusion welding machines;

The pressure fusion welding machine is provided with a welding station; the spacing between the welding stations of the pressure fusion welding machine on the two sides matches the length dimension of the single stack of copper foils to be welded;

The adjustable position of the pressure fusion welding machine is installed on the welding machine platform, the main body of the pressure fusion welding machine is installed on the horizontal guide rail, and there is an adjustment screw between the main body of the pressure fusion welding machine and the fixed machine table. mechanism.

Further, the pressure fusion welding machine is provided with two upper and lower welding stations; wherein the lower welding station is fixed on the lower machine table of the pressure fusion welding machine, and one end of the single stack of copper foils to be welded is set by the loading and unloading equipment. placed on the soldering station on the lower side;

The welding station on the upper side of the pressure fusion welding machine is installed on the pressure head;

It also includes a servo electric cylinder, the servo electric cylinder is vertically installed at the rear of the pressure fusion welding machine, and the servo electric cylinder is connected with the pressure head through a link mechanism.

The key point of the present invention is to fill the welding chamber with nitrogen to form a large nitrogen working environment, in which a loading and unloading equipment and a welding machine are installed. The sheets are stacked and clamped up and down, and then delivered to the welding station in the welding machine for automatic pressure fusion welding; after the welding is completed, the copper foil soft connector is removed and placed on the storage rack of the cooling device for heating in a nitrogen environment. Cool, and then re-clamp to deliver a new single-piece stack of copper foil to be soldered.

The welding chamber is equipped with an oxygen content detection sensor, especially near the welding station; according to the test, in order to weld copper foil soft connection products, when the ambient oxygen content is lower than 400PPM, the welding quality will be significantly improved ; During the welding process, the temperature of the welding station is detected synchronously, and the welding parameters (such as welding current, pressure, etc.) are automatically adjusted in real time; since the welding environment is a low-oxygen environment, and the cooling environment after welding is also a low-oxygen environment, the whole process of copper The surface of the foil will not be oxidized; and there is no need to spray water to control the temperature of the product during the process, so there will be no traces such as watermarks on the surface of the product; thus, after the product is welded, subsequent drying and polishing processes are eliminated. The surface quality of the product is better, and the internal quality of the copper foil layer can also be effectively controlled, and the yield rate of the output can reach more than 99.9%.

The copper foil flexible connection automatic production system of the invention can meet the requirements of low nitrogen leakage under nitrogen environment welding and high automatic welding requirements; the invention realizes the automatic aggregate and monolithic material of the stamping connection, and the automatic positioning of the nitrogen environment (no oxidation) Welding, automatic unloading and placing, and the whole station is unmanned; it effectively solves the previous problem of human sea standing, greatly reduces labor costs, and breaks through the tediousness of manually placing multi-layer copper sheets, and welding requires water spray oxidation and polishing. , Low-efficiency, low-precision operations, accurate placement, greatly improved production quality and efficiency.

Description of drawings

Fig. 1 is the overall top view of the copper foil soft connection automatic production system of the present invention;

Fig. 2 is the overall front view of the copper foil flexible connection automatic production system of the present invention;

Fig. 3 is the overall structure schematic diagram 1 of the copper foil flexible connection automatic production system after removing the punching equipment;

FIG. 4 is a schematic diagram 2 of the overall structure of the copper foil flexible connection automatic production system after removing the punching equipment;

5 is a schematic diagram of the overall structure of the transmission line of the present invention;

Fig. 6 is the partial structure schematic diagram of the transmission line of the present invention;

Fig. 7 is the overall structure schematic diagram 1 of the transfer mechanism of the present invention;

8 is a schematic diagram 2 of the overall structure of the transfer mechanism of the present invention;

Fig. 9 is the rear structure schematic diagram of the transfer mechanism of the present invention;

10 is a schematic structural diagram of an online sorting device of the present invention;

11 is a schematic diagram 1 of the overall structure of the welding chamber and the through-wall delivery device of the present invention;

12 is a schematic diagram 2 of the overall structure of the welding chamber and the through-wall delivery device of the present invention;

13 is a top view of the overall structure of the welding chamber and the through-wall delivery device of the present invention;

14 is a schematic diagram of the overall structure of the through-wall delivery device of the present invention;

15 is a bottom view of the overall structure of the through-wall delivery device of the present invention;

16 is a schematic diagram of the retracted state of the through-wall delivery device of the present invention;

17 is a schematic diagram of the extended state of the through-wall delivery device of the present invention;

18 is a schematic diagram of the overall structure of the welding operation area of the present invention;

19 is a schematic diagram of the overall structure of the pressure fusion welding machine of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

A first aspect of the present invention provides a method for producing a copper foil flexible connection, which specifically includes the following steps:

Step 1: copper foil forming; use punching equipment to punch out a single piece of copper foil from the copper foil strip;

Step 2: Collect copper foil; collect a single piece of copper foil, and transfer to the next process after collecting enough design pieces;

Step 3: Finishing the copper foil; finishing the copper foil, especially aligning both ends;

Step 4: Copper foil welding; under the condition of low oxygen content (oxygen content is less than 400PPM, limited by the welding temperature and heating time), the stacks of copper foils are welded and melted, and the ends of the copper foils are pressed together , to form a terminal; after the two ends are welded and pressed, a soft connection of copper foil is formed;

Step 5: Cool the copper foil soft connection; under the condition of low oxygen content, cool the welded copper foil soft connection; empty the welding machine station for the next copper foil soft connection to be welded; copper foil soft connection Cool down to a temperature below 100°C where oxidation and discoloration is no longer under the condition of low oxygen content ), preferably below the touch-safe temperature (below 55°C, see GB/T18153-2000, Mechanical Safety Accessible Surface Temperature Determining Ergonomic Data of Hot Surface Temperature Limits; subject to different operating conditions, such as wearing gloves, etc., The temperature is not strictly required), and then transferred to the air environment for subsequent operations.

In the above steps 4 and 5, the environment with low oxygen content can be formed by vacuuming or filling with inert gas such as nitrogen.

In the above step 5, due to the influence of oxygen content on the oxidation of the copper foil surface during the cooling process of the copper foil soft connection, with the decrease of the surface temperature of the copper foil, the upper limit threshold of the oxygen content gradually increases, so there is no fixed oxygen content standard. .

Based on the above-mentioned production method of copper foil soft connection, the second aspect of the present invention provides an automatic production system for copper foil soft connection, as shown in FIG. 1 and FIG. Delivery device 4 through the wall, loading and unloading equipment 5, welding machine 6, cooling device 7.

The punching device 1 is used for forming the copper foil in step 1; in this embodiment, the punching device 1 is a punching machine, which can punch out a single piece of copper foil with a relatively complex shape in cooperation with a mold; When the sheet is a flat product, a cutting bed can also be used to directly cut the copper foil strip into shape.

The transfer line 2 is mainly used for the collection of single pieces of copper foil in step 2. The single pieces of copper foil produced by the punching equipment 1 are collected in a centralized manner, and after reaching the designed quantity, they are transferred backwards; in this embodiment, In order to cooperate with the punching of the punching machine, the delivery line 2 is provided with a material receiving mechanism, which is located below the punching die for material receiving; when the material receiving is completed, it is removed from the punching machine and conveyed backwards.

The welding chamber 3 is a sealed operation room, at least wrapping the welding head; in order to avoid leakage, the welding chamber 3 in the present invention is equipped with a loading and unloading equipment 5, a welding machine 6, and a cooling device 7, so that the integrity is better.

Further, a through-wall delivery device 4 is also provided, which can pass through the wall of the welding chamber 3 to transfer the single stack of copper foils to be welded on the transfer line 2 into the welding chamber 3; this embodiment , the through-wall delivery device 4 is also installed in the welding chamber 3; the welding chamber 3 is provided with an opening on the wall between the transmission line 2 and the through-wall delivery device 4 for the The delivery mechanism of the through-wall delivery device 4 delivers through the wall.

The loading and unloading equipment 5 is a multi-degree-of-freedom (more than 4 degrees of freedom) robotic arm in this embodiment, and the single-piece stack of copper foil to be welded on the wall-passing delivery device 4 is sandwiched by the robotic arm, and then placed. into the welder 6.

Before the loading and unloading equipment 5 clamps the single stack of copper foils to be welded and places them in the welding machine 6, step 3 needs to be performed, and this step can be performed by the delivery line 2, the through-wall delivery device 4, or any other device. Any one of the above-mentioned loading and unloading equipment 5 can be carried out, and it can also be carried out separately in a plurality of stations.

The welding machine 6 implements step 4, and performs welding under the condition of low oxygen content; preferably, since the soft connection of copper foil generally requires double-end welding, in this embodiment, the welding machine 6 is double-end welding, which can be used for welding. At the same time, the two ends of the copper foil soft connection are welded and melted.

After the welding machine 6 is finished, the soft connection of the welded copper foil is transferred to the cooling device 7, and cooled under the condition of low oxygen content; The arm directly removes the copper foil soft connection from the welding machine 6; in this embodiment, the cooling device 7 is a material frame, and the robotic arm inserts the welded copper foil soft connection into the space for natural cooling. Of course, according to needs, a special automatic transmission cooling line can also be set up, and the welded copper foil soft connection is placed on the conveying line (the main body of the conveying line is accommodated in the welding chamber 3, and is distributed in a flat shape), slowly transfer and Cooling (the cooling time is generally more than 15 minutes), and finally after cooling to the specified temperature, the welding chamber 3 is removed; near the outlet, due to the opening of the outgoing sealed chamber, there is leakage, and the oxygen content in this area will increase, but Because the closer to the opening, the lower the temperature of the copper foil soft connection is, and the less affected by the oxidation and discoloration of oxygen, so through reasonable design, it can not only ensure the operation of low oxygen content inside, but also continuously connect the copper foil soft connection after welding and cooling. output requirements.

The copper foil soft connection automatic production system of the present invention realizes unmanned automatic operation of the whole station, greatly reduces labor costs; and the welding cooling operation is carried out in a nitrogen environment (low oxygen environment), eliminating the need for water spray cooling, Cumbersome and inefficient links such as polishing, and the quality of the inner copper foil is also good, and the product quality is greatly improved.

The present invention further introduces each equipment involved in the copper foil flexible connection automatic production system in detail; as shown in FIG. 3 and FIG. 4 , it is a schematic diagram of the overall structure after the punching equipment 1 is removed.

transfer line 2

As shown in FIG. 5 , the delivery line 2 is provided with a material catching device 21 ; the material catching device 21 is matched with the punching equipment 1 to collect single copper foil sheets.

(1) Feeding device 21

When the punching equipment 1 is a punch press, since the material receiving space under the punch die is small, the material receiving device 21 is a reciprocating material receiving device, as shown in FIG. 6 , including a material receiving tray 211, a reciprocating linear slide The rail 212, the reciprocating linear slider 213, and the reciprocating driving element 215; the cross section of the storage chamber of the receiving tray 211 matches the size of the single piece of copper foil to be collected, and the single piece of copper foil can smoothly fall into the In the receiving tray 211 ; since the size of a single copper foil is generally long, the width of the receiving tray 211 is relatively large. The reciprocating linear slide rail 212 is sleeved in the reciprocating linear slide block 213, and the tails of the reciprocating linear slide rails 212 on both sides are connected by a reciprocating bracket 214, and the reciprocating bracket 214 is connected to the The reciprocating driving element 215 is installed, and the reciprocating driving element 215 is a telescopic cylinder, which can drive the reciprocating bracket 214 to perform linear motion, and finally drive the material receiving tray 211 to reciprocate, so that it extends into the punch. The copper foil single sheet is collected and collected in the cutting equipment 1. After the collection is completed, the blanking equipment 1 is removed for subsequent use, and then returned to the blanking equipment 1 to wait for materials after emptying.

Since the material receiving chamber of the material receiving tray 211 of the material receiving device 21 has a certain depth, a special input transfer mechanism 22 needs to be equipped to take out the stacked copper foil single sheets from the material receiving chamber. Behind the material receiving device 21, a material storage conveying line 23 can also be provided, and the input end transfer mechanism 22 takes out the stacked copper foil single sheets from the material receiving cavity and puts them into the material storage conveying line 23, for temporary storage and transportation. Since the punching equipment 1 generally generates large vibrations, in order to avoid affecting the subsequent precision operations, the punching equipment 1 needs to be kept away from the welding chamber 3, and the storage and conveying line 23 needs to be set up to transmit The copper foil to be soldered is stacked in one piece. At the input end of the storage conveying line 23, the input end transfer mechanism 22 is provided; at the output end of the storage conveyance line 23, an output end transfer mechanism 24 is provided.

(2) Storage conveyor line 23

As shown in FIG. 6 , the storage conveyor line 23 includes a storage tray 231, a conveyor belt 232, a pulley 233, and a conveyor drive motor 234; the conveyor belt 232, the pulley 233, and the conveyor drive motor 234 constitute a rotating conveyor line , the conveyor belt 232 is provided with the material storage tray 231 at intervals, and the material storage tray 231 has a material storage chamber, which is used to store the single-piece stack of copper foils to be welded. Further, in order to facilitate the positioning of the storage trays 231 at both ends to cooperate with the input end transfer mechanism 22 and the output end transfer mechanism 24 to carry out the pick and place operation, especially the pick and place process will have a certain stop, so in the A number of storage tray detection sensors 235 are installed on the side of the conveyor line, and the storage tray detection sensors 235 can be installed at both ends of the conveyor line; however, because the storage tray 231 is generally on the conveyor belt 232, etc The distances are distributed, so a plurality of the storage tray detection sensors 235 can also be installed together, and the positions of the storage trays 231 at both ends can be reversed by detecting the position of a storage tray 231 in the middle.

(3) Transfer agency

The input transfer mechanism 22 and the output transfer mechanism 24 adopt the same structural design, and are used to stack copper foil single sheets for transfer, pick and place; as shown in Figures 7-9, the transfer mechanism is a single drive with both sides The moving mechanism includes a horizontal sliding rail 221, a horizontal sliding block 222, a vertical sliding rail 223, and a vertical sliding block 224; the horizontal sliding rail 221 is horizontally fixed on the equipment bracket, and the horizontal sliding rail 221 is sleeved with The horizontal sliding block 222; the horizontal sliding block 222 and the vertical sliding block 224 are vertically crossed and fixed, and the vertical sliding block 224 is sleeved with the vertical sliding rail 223. The horizontal sliding rail 221, the horizontal sliding block 222, the vertical sliding rail 223, and the vertical sliding block 224 form a cross-moving guide mechanism; the bottom of the vertical sliding rail 223 is provided with a clamping mechanism, including a clamping driving cylinder 225 , and the clamping claw 2251 installed on the cylinder piston rod; the clamping driving cylinder 225 can drive the clamping claw 2251 located below it to open and close, clamp the outer side of the copper foil single-piece stack, and transfer; The length of the stack of foil monoliths. In the drawings of this embodiment, two clamping driving cylinders 225 are provided in parallel, and two pairs of clamping claws 2251 are respectively provided; , to clamp. The upper part of the vertical slide rail 223 is provided with a drive block 226; the upper part of the horizontal slide rail 221 is provided with a guide slideway 227, and the rear part of the drive block 226 is connected with a sliding column 2261 and inserted into the guide slide The guide slideway 227 is an inverted "U"-shaped slideway, and the vertical slideway 223 is matched with the guide slideway 227 by the slide column 2261 fixed on the upper The inverted "U" shape of the slideway 227 moves; the lower middle part of the guide slideway 227 is also provided with a driving arm 228, and a long driving slot 2282 is arranged in the middle of the driving arm, and the middle part of the driving block 226 Inserted into the driving slot 2282, one end of the driving arm 228 is rotatably installed in the lower middle of the guide slideway 227 through the rotating part 2281; the rotating part 2281 is connected with the rotating driving element 2283; the rotating part 2281 The driving element 2283 is a rotary cylinder and is installed on the back of the transfer mechanism; the rotary driving element 2283 drives the rotating part 2281 to rotate, thereby driving the driving arm 228 to swing back and forth, and the driving slot 2282 of the driving arm 228 is embedded with a The driving block 226 further drives the driving block 226 to move along the inverted "U"-shaped chute of the guide chute 227 and the straight chute of the driving chute 2282. Both ends of the guide chute 227 It is a vertical short slot, which can guide the vertical motion of the vertical slide rail 223, so that the clamping claw 2251 at the bottom can be moved vertically upwards, or vertically downwards, perpendicular to the receiving tray 211, Or the storage tray 231 picks up and places the single copper foil to stack, so as to prevent the side of the single copper foil from colliding with the inner wall of the tray.

Further, limit springs 229 are respectively provided at both ends of the transfer mechanism. When the driving arm 228 swings to both ends, it can touch the corresponding limit springs respectively, and the compression springs decelerate and stop, thereby reducing the falling speed. , to further reduce collisions.

By arranging the inverted "U"-shaped guide slides 227, the clamping jaws 2251 can move vertically in a short distance at both ends, which is convenient for taking and placing the stack of thin and light copper foils; Carry out the transfer to avoid touching the equipment to cause bumps in the transfer process.

(4) Monolithic mechanism 25

In this implementation, at the output end of the storage and conveying line 23, there is also a monolithic mechanism 25 for sorting the copper foil single-piece stack; as shown in FIG. 10, the monolithic mechanism 25 includes a monolithic drive The component 251 and the monolithic clamping jaw 252; the monolithic driving component 251 is a bi-clamping cylinder, and the bi-clamping cylinder is horizontally installed above the end storage tray 231 and parallel to the length direction of the storage tray 231 A pair of monolithic jaws 252 are installed on the monolithic driving element 251; the monolithic jaws 252 are located at both ends of the storage tray 231 in the length direction; Open your mouth. When the storage tray 231 moves to the end position, when the material is to be taken out, it will pause at this position. At this time, the monolithic driving element 251 is activated, and the monolithic jaws 252 extend from the length of the storage tray 231 The two ends of the direction are clamped inward, and the two ends of the copper foil monolithic stack are pushed to arrange the two ends of the length direction. An adjustment pad 253 may also be provided on one of the monolithic clamping jaws 252, and the thickness of the adjustment pad 253 can be adjusted to accommodate the stacking of copper foils of different lengths.

At the same time when the storage tray 231 at the end is suspended, the clamping jaws 2251 of the output transfer mechanism 24 also extend into the area of the storage tray 231 from both sides in the width direction of the single copper foil stack. Clamp, arrange the width direction of the copper foil monolithic stack.

In this way, the stacking of the single copper foil is completed, and then the monolithic driving element 251 moves in the reverse direction, the monolithic clamping jaws 252 are released, and the rotary driving element 2283 of the output transfer mechanism 24 is activated, and the sorting is performed. The completed copper foil single-piece stack is taken out from the storage tray 231 and transferred.

Welding room 3 & through wall delivery device 4

11-13 are schematic diagrams of the overall structure of the welding chamber 3 and the delivery device 4 through the wall; the welding chamber 3 is a sealed operation room, which can be set as a vacuum chamber or filled with inert gas such as nitrogen as required.

The welding room 3 is provided with a sealed door 31 for the operator to enter and exit; the welding room 3 is also provided with an electrical room 32 on one side, which is used to centrally place electric control components, which is convenient for maintenance outdoors; the welding room 3 According to the installation situation of the equipment, an inspection window 33 is opened to facilitate the maintenance of the equipment close to the wall surface of the welding chamber 3; one side of the welding chamber 3 is opened with an airtight window 34, which is located in the airtight window 34. A through-wall delivery device 4 is installed on the sides.

The through-wall delivery device 4 is preferably installed in the welding chamber 3 and cooperates with the transmission line 2 to stack the single sheets of copper foil to be welded on the transmission line 2 through the welding chamber 3, penetrate into the welding chamber 3.

As shown in FIGS. 14-17 , the through-wall delivery device 4 includes a mounting bracket 41 , a telescopic table 42 , and a telescopic drive mechanism 43 ; the mounting bracket 41 fixes the entire through-wall delivery device 4 on the welding Inside the room 3 ; the telescopic drive mechanism 43 is installed on the upper part of the installation bracket 41 , and the telescopic table 42 is installed on the telescopic drive mechanism 43 .

The longitudinal section of the telescopic table 42 matches the opening section of the airtight window 34 , and the telescopic table 42 is sheathed in the airtight window 34 ; the telescopic table 42 is driven by the telescopic drive mechanism 43 . down, the airtight window 34 can be telescopically moved relative to the airtight window 34 . A material support plate 421 is embedded in the telescopic table 42, and a material slot 422 is opened therein for storing the single copper foil stack to be welded. size is adjusted.

The telescopic drive mechanism 43 includes a linear drive mechanism and a linear guide mechanism; in this embodiment, the linear drive mechanism is a drive element 431 and a drive block 432; the drive element 431 can be a rodless cylinder, or an electric pusher. The driving block 432 is a moving part; the driving block 432 is fixed with the telescopic table 42 through the telescopic connecting piece 433, thereby driving the telescopic table 42 to perform telescopic movement.

The linear guide mechanism includes a telescopic linear slider 434 and a telescopic linear guide rod 435. The telescopic linear slider 434 is fixed on the bottom of the telescopic table 42, and the telescopic linear slider 434 is sleeved on the telescopic linear guide rod. 435 ; in this embodiment, since the telescopic table 42 is relatively wide, two sets of the linear guide mechanisms are provided, which are respectively installed on both sides of the bottom of the telescopic table 42 .

One side of the telescopic drive mechanism 43 is also provided with two telescopic position sensors 436 to detect the telescopic limit positions of both ends of the telescopic table 42. In this embodiment, the telescopic position sensor 436 detects the telescopic position by detecting the telescopic position. The linear slider 434 indirectly detects the telescopic position of the telescopic table 42, so as to control the output of the linear drive mechanism.

In order to further facilitate the operation, the through-the-wall delivery device 4 is also provided with a lifting mechanism for stacking the single copper foil to be welded, so as to facilitate the lifting of the single stack of the copper foil to be welded. The stack is clamped in the up and down direction, and then sent into the welding machine 6, and pressure welding and fusion are performed from both ends of the stack of single copper foils to be welded in the up and down direction. The lift mechanism includes a lift drive element 44 and a lift bracket 45; the lift drive element 44 is a linear cylinder, and the lift bracket 45 is mounted on the top thereof; the lift bracket 45 is embedded In the lifting cavity 423 of the material tank 422 , the lifting driving element 44 can drive the lifting bracket 45 to rise, and lift the single stack of copper foil to be welded from the material tank 422 , and is far enough away from the surface of the telescopic table 42 to facilitate clamping by the loading and unloading equipment 5 . Further, in order to ensure that the copper foil single-piece stack is still in a neat state during the lifting process, the lifting bracket 45 is installed on the lifting and clamping driving element 46, and the lifting and clamping driving element 46 is a pair of clips. The air cylinder can drive a pair of lifting brackets 45 to clamp inwardly, clamp from both sides of the copper foil monolithic stack, and then be driven to lift by the lifting driving element 44 .

Welder 6

The loading and unloading equipment 5 is a multi-axis industrial manipulator.

Since copper foil soft connection generally requires welding both ends of the copper foil monolithic stack in the longitudinal direction, the welding machine 6 in the present invention includes two independent pressure fusion welding machines 61 , as shown in FIG. 18 .

As shown in FIG. 19 , the pressure fusion welding machine 61 is provided with two upper and lower welding stations 611 ; the lower welding station is fixed on the equipment, and one end of the stack of single copper foils to be welded is swung by the loading and unloading equipment 5 Placed on the lower welding station 611; and the upper welding station 611 is installed on the indenter 612; a driving hydraulic cylinder is installed on the top of the indenter 612 of the conventional pressure fusion welding machine to perform downward driving; in the present invention, the driving The component is a servo electric cylinder 613, which is vertically installed at the rear of the pressure fusion welding machine 61, and is connected with the indenter 612 through a link mechanism 614, and the connecting rod is driven by the servo electric cylinder 613 The mechanism 614 moves, and then drives the pressure head 612 to move up and down. After the structure is improved, the hydraulic station is eliminated, the whole machine is cleaner, and the height of the fuselage is reduced, which is more convenient for installation in the welding room 3 .

Further, the pressure fusion welding machine 61 can be installed on the welding machine platform by adjusting the specific position. There is an adjustment screw mechanism 616 between the tables, and an adjustment hand wheel 617 is also provided at the end. By rotating the adjustment hand wheel 617, the adjustment screw mechanism 616 can be driven to move, thereby driving the pressure fusion welding machine 61 The main engine moves on the horizontal guide rail 615 to adjust the position of the main engine of the pressure fusion welding machine 61 on the fixed machine table, so as to adjust the distance between the welding stations 611 of the two pressure fusion welding machines 61 to suit the Soldering requirements for copper foil soft connection with different length specifications. Preferably, both of the two pressure fusion welding machines 61 have a position adjustment mechanism, which can adjust the relative distance synchronously, so that when the movement trajectory of the loading and unloading equipment 5 remains unchanged, by adjusting the two pressure fusion welding machines The position of the machine 61 can be adapted to the flexible connection and welding of copper foils of different lengths and specifications.

In the drawings of this embodiment, the cooling device 7 is a material storage rack, which is placed on both sides of the loading and unloading equipment 5, and the welded copper foil soft connections can be placed in it piece by piece, and cooled in a nitrogen environment ; Its storage capacity is large, and it can be taken out centrally after a shift is completed. Of course, a slow transmission line can also be set up to perform output while cooling; further, a set of mechanisms similar to the above-mentioned through-wall delivery device 4 can be installed on the other side to connect the cooled copper foil softly to the components, and transmit nitrogen gas room.

The key point of the present invention is that the welding chamber 3 is filled with nitrogen to form a large nitrogen working environment, in which a loading and unloading equipment 5 and a welding machine 6 are installed. The loading and unloading equipment 5 is an automatic operation robot arm, which can The welded copper foil is stacked and clamped up and down, and then delivered to the welding station in the welding machine 6 for automatic pressure fusion welding; after the welding is completed, the copper foil soft connector is removed and placed in the storage material of the cooling device 7 The racks were cooled under nitrogen atmosphere, and then re-clamped to deliver a new single-piece stack of copper foil to be soldered.

The welding chamber 3 is provided with an oxygen content detection sensor, especially in the vicinity of the welding station 611 of the welding machine 6; The quality will be significantly improved; the temperature of the welding station 611 is detected synchronously during the welding process, and the welding parameters (such as welding current, pressure, etc.) are automatically adjusted in real time; since the welding environment is a low-oxygen environment, and the cooling environment after welding is also low-oxygen Therefore, the surface of the copper foil will not be oxidized in the whole process; and there is no need to spray water to control the temperature of the product during the process, so there will be no traces such as watermarks on the surface of the product; thus, after the product is welded, the follow-up is eliminated. During the drying and polishing process, the surface quality of the product is better, and the internal quality of the copper foil layer can also be effectively controlled, and the yield rate can reach more than 99.9%.

The copper foil flexible connection automatic production system of the invention can meet the requirements of low nitrogen leakage under nitrogen environment welding and high automatic welding requirements; the invention realizes the automatic aggregate and monolithic material of the stamping connection, and the automatic positioning of the nitrogen environment (no oxidation) Welding, automatic unloading and placing, and the whole station is unmanned; it effectively solves the previous problem of human sea standing, greatly reduces labor costs, and breaks through the tediousness of manually placing multi-layer copper sheets, and welding requires water spray oxidation and polishing. , Low-efficiency, low-precision operations, accurate placement, production quality and efficiency are greatly improved, the daily output of a single equipment exceeds 5K pieces, and the efficiency is increased by 3 times on the original basis.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Such changes and improvements fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. The production method for the flexible connection of the copper foil is characterized by comprising the following steps:

step 1: forming a copper foil; punching a copper foil single sheet from the copper foil strip by using a punching device;

and 2, step: collecting copper foil; collecting the copper foil single sheets, and transferring to the next procedure after collecting enough designed sheets;

and 3, step 3: finishing copper foil; finishing the copper foil, particularly aligning two ends;

and 4, step 4: copper foil welding; under the condition of low oxygen content, welding and fusing the stacked copper foils, and pressing the ends of the copper foils together to form a terminal; after welding, fusing and pressing the two ends, forming copper foil flexible connection;

and 5: the copper foil is in flexible connection and cooled; cooling the welded copper foil flexible connection under the condition of low oxygen content; leaving the welding machine station empty for the next copper foil flexible connection to be welded and fused; the copper foil flexible joint is cooled to a temperature below the temperature of no longer oxidative discoloration under the condition of low oxygen content, preferably below the temperature safe to touch, and then transferred to an air environment for subsequent operation.

2. The method for producing a flexible connection of copper foil according to claim 1, wherein the low oxygen content atmosphere in the steps 4 and 5 is formed by vacuum evacuation or by filling an inert gas such as nitrogen gas.

3. The automatic production system for the flexible connection of the copper foil is characterized by operating the production method for the flexible connection of the copper foil, and specifically comprising blanking equipment, a transmission line, a welding chamber, a through-wall delivery device, feeding and discharging equipment, a welding machine and a cooling device;

the blanking equipment is used for forming the copper foil in the step 1;

the transmission lines are used for collecting the copper foil single sheets in the step 2, the copper foil single sheets produced by the blanking equipment are collected in a centralized manner, and the transmission lines are transmitted backwards after the designed number of the copper foil single sheets is reached;

the welding chamber is a sealed operation chamber and at least wraps the welding head;

the through-wall delivery device can pass through the wall surface of the welding chamber and transfer the copper foil to be welded on the transfer line into the welding chamber in a stacking mode;

the copper foil to be welded is stacked and clamped by the feeding and discharging equipment and then is placed in a welding machine;

before the copper foil single sheets to be welded are stacked and clamped into a welding machine by the feeding and discharging equipment, step 3 needs to be implemented, and the step can be implemented by any one of the delivery line, the through-wall delivery device or the feeding and discharging equipment or can be implemented by a plurality of stations respectively;

the welding machine implements the step 4, and welding is carried out under the condition of low oxygen content;

and after the welding machine finishes welding, transferring the welded copper foil flexible connection into the cooling device, and cooling under the condition of low oxygen content.

4. The automatic production system for flexible connection of copper foil according to claim 3, wherein the blanking apparatus is a punch press in which a copper foil single piece stamping die is provided;

one end of the delivery line is provided with a material receiving device; the material receiving device is matched with the blanking equipment, and copper foil single sheets are collected;

the material receiving device is a reciprocating type material receiving device and comprises a material receiving tray and a reciprocating driving mechanism;

the cross section of the material storage cavity of the material receiving tray is matched with the size of a copper foil single sheet to be collected;

the material receiving tray is arranged on a reciprocating driving mechanism which is composed of a reciprocating linear slide rail, a reciprocating linear slide block and a reciprocating driving element.

5. The copper foil flexible connection automatic production system of claim 4, wherein a transfer mechanism is arranged in the transfer line and used for picking and placing the collected copper foil single sheets for stacking;

the transfer mechanism is a single-drive bidirectional moving mechanism and comprises a horizontal slide rail, a horizontal slide block, a vertical slide rail and a vertical slide block; the horizontal sliding rail is horizontally fixed on the equipment bracket, and the horizontal sliding block is sleeved on the horizontal sliding rail; the horizontal sliding block and the vertical sliding block are vertically and crossly fixed, and the vertical sliding rail is sleeved in the vertical sliding block; the horizontal sliding rail, the horizontal sliding block, the vertical sliding rail and the vertical sliding block form a cross-shaped moving guide mechanism;

the bottom of the vertical slide rail is provided with a clamping mechanism which comprises a clamping driving cylinder and a clamping claw arranged on a cylinder piston rod;

the upper part of the vertical slide rail is provided with a driving block, and the rear part of the driving block is provided with a guide slide column;

a guide slideway is arranged above the horizontal sliding rail, and a sliding column connected with the rear part of the driving block is inserted into the guide slideway; the guide slideway is an inverted U-shaped slideway, vertical guide slideways are arranged at two ends of the guide slideway, and the vertical slide rail is matched with the guide slideway by the slide column fixed at the upper part of the guide slideway and moves along the inverted U-shaped of the guide slideway;

a driving arm is further arranged in the middle of the lower portion of the guide slide way, a long-strip-shaped driving groove is formed in the middle of the driving arm, and a guide slide column in the middle of the driving block is inserted into the driving groove;

one end of the driving steering arm is rotatably arranged in the middle of the lower part of the guide slideway through a rotating part; the rotating part is connected with a rotary driving element; the rotary driving element drives the rotary part to rotate so as to drive the driving arm to swing in a reciprocating mode, the driving groove of the driving arm is embedded with the driving block, and then the driving block is driven to move along the inverted U-shaped sliding groove of the guide slideway and the linear sliding groove of the driving groove, so that the clamping jaw at the bottom generates an inverted U-shaped movement track.

6. The automated copper foil flexible connection production system according to claim 3, wherein a material arranging mechanism is provided on the delivery line for carrying out step 3; the material arranging mechanism comprises a material arranging driving component and a material arranging clamping jaw;

the material arranging driving element is a butt-clamping cylinder, the butt-clamping cylinder is horizontally arranged above a material receiving tray or a material storing tray arranged on the delivery line, and the butt-clamping cylinder is parallel to the length direction of the tray;

a pair of monolith clamping jaws are mounted on the monolith driving component;

the material arranging clamping jaws are positioned at two ends of the tray in the length direction; two ends of the tray in the length direction are open ports;

the material arranging mechanism comprises a clamping mechanism arranged in the delivery line, and the clamping mechanism is provided with a clamping claw; the clamping claws clamp inwards from two sides of the width direction of the tray.

7. The automated copper foil flexible connection production system according to claim 3, wherein the welding chamber is a closed chamber; one side of the welding chamber is provided with an airtight window, and a through-wall delivery device is arranged beside the airtight window;

the wall-through delivery device comprises a mounting bracket, a telescopic table and a telescopic driving mechanism; the mounting bracket fixes the whole through-wall delivery device on the ground or other equipment brackets; the upper part of the mounting bracket is provided with the telescopic driving mechanism, and the telescopic table is arranged on the telescopic driving mechanism;

the longitudinal section of the telescopic table is matched with the opening section of the airtight window, and the telescopic table is sleeved in the airtight window; the telescopic table can do telescopic motion relative to the airtight window under the driving of the telescopic driving mechanism;

a material groove is formed in the telescopic table;

the telescopic driving mechanism comprises a linear driving mechanism and a linear guide mechanism;

the linear driving mechanism is a driving element and a driving block; the driving block is an output motion part of the driving element;

the driving block is fixed with the telescopic table through a telescopic connecting piece so as to drive the telescopic table to perform telescopic motion;

the linear guide mechanism comprises a telescopic linear sliding block and a telescopic linear guide rod, the telescopic linear sliding block is fixed at the bottom of the telescopic table, and the telescopic linear sliding block is sleeved on the telescopic linear guide rod; the telescopic linear guide rod is fixed on the mounting bracket.

8. The copper foil flexible connection automatic production system according to claim 7, wherein the through-wall delivery device is further provided with a lifting mechanism for stacking a single piece of copper foil to be welded;

the lifting mechanism comprises a lifting driving element and a lifting bracket; the lifting bracket is arranged at the top of the lifting driving element; the lifting bracket is embedded in the lifting cavity of the material groove, the lifting driving element can drive the lifting bracket to lift, the copper foil single sheets to be welded are stacked and lifted from the material groove and leave the surface of the telescopic table, and therefore clamping of feeding and discharging equipment is facilitated.

9. The automated production system for copper foil flexible connection of claim 3, wherein the welding machine comprises 2 independent press-and-melt welding machines;

a welding table is arranged in the pressure fusion welding machine; the distance between welding tables of the pressure fusion welding machine at the 2 side is matched with the length size of the copper foil single sheet stack to be welded;

but pressure welding machine position regulation installs on the welding machine platform, the host computer of pressure welding machine is installed on horizontal guide rail, be equipped with adjusting screw mechanism between the host computer of pressure welding machine and the fixed board.

10. The automated production system for copper foil flexible connection according to claim 9, wherein the press-welding machine is provided with upper and lower 2 welding stations; wherein the lower welding table is fixed on a lower machine table of the pressure fusion welding machine, and one end of the copper foil single sheet to be welded, which is stacked, is placed on the welding table at the lower side by the feeding and discharging device;

the welding table on the upper side of the pressure fusion welding machine is arranged on the pressure head;

the servo electric cylinder is vertically installed at the rear part of the pressure fusion welding machine and is connected with the pressure head through a connecting rod mechanism.

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