A device and system for automatically detecting tensile strength and elongation of copper foil
By designing an automatic copper foil tensile strength elongation detection device, the automatic detection of copper foil is achieved using robotic arms and automated equipment, solving the problems of high labor intensity and poor safety of manual inspection, and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIUJIANG TELFORD ELECTRONICS MATERIAL CO LTD
- Filing Date
- 2026-03-18
- Publication Date
- 2026-06-12
AI Technical Summary
In the current technology, the testing of the tensile strength and elongation of copper foil mainly relies on manual operation, which results in high labor intensity and safety.
Design an automatic copper foil tensile strength elongation detection device that uses a robotic arm and automated equipment to replace manual operation. The device includes a rotary table, an oven assembly, a cutting assembly, a gripping assembly, and a detection assembly to achieve automated detection of copper foil.
It improves the safety of testing, reduces manual labor intensity and costs, and increases production efficiency.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention relates to the field of copper foil performance testing technology, and in particular to an automatic device and system for testing the tensile strength and elongation of copper foil. Background Technology
[0002] The current state of technological development in this industry: With the continuous development of 3C technology, the performance requirements for printed circuit boards (PCBs) in the electronics industry are constantly increasing. Copper foil, as a crucial raw material for PCBs, directly affects the reliability and lifespan of the PCB due to its tensile strength and elongation. In the new energy industry, copper foil is a key material for the negative electrode current collector. With the explosive growth of the new energy industry, researchers are paying increasing attention to the energy density and safety performance of batteries. The tensile strength and elongation of copper foil have a significant impact on the stability of battery performance during charge-discharge cycles. Therefore, timely testing of the tensile strength and elongation of copper foil during the production process is extremely important.
[0003] The shortcomings of the existing technology are that the tensile strength elongation of copper foil is currently mainly tested manually, which requires a lot of repetitive work and is labor-intensive. Summary of the Invention
[0004] To address the aforementioned issues, this invention provides an automatic copper foil tensile strength elongation testing device that can replace manual operation with mechanical means, avoiding cutting and squeezing of the operator's hands, thus improving device safety. The use of automated equipment replaces a large amount of repetitive labor, reducing labor costs.
[0005] The first aspect of the present invention provides an automatic detection device for tensile strength elongation of copper foil, comprising a workpiece stage, wherein the workpiece stage is provided with a rotary table, an oven assembly, a cutting assembly, a gripping assembly and a detection assembly; the rotary table is provided with a plurality of copper foil tables, which can be driven to rotate between multiple workstations by the rotary table; the gripping assembly can grip copper foil and can move between each workstation and each assembly.
[0006] In one embodiment, the oven assembly is located above one of the workstations, and the oven assembly includes an oven and a lifting drive, the oven being driven to move up and down between a position covering the copper foil and a position away from the copper foil by the lifting drive.
[0007] In one specific embodiment, the oven includes an oven with an open side and an oven baffle plate, the oven baffle plate being slidable between a position that covers the open side and a position that opens the open side.
[0008] In one specific embodiment, the cutting assembly includes an upper cutter, a lower cutter, and a position sensor. The upper cutter is movable, and the sensing end of the position sensor is aligned with the position where the cutter cuts the copper foil.
[0009] In one specific embodiment, the gripping component includes a robotic arm and a camera, the robotic arm being movable between a workstation, a cutting component, and a detection component.
[0010] In one specific embodiment, the end of the robotic arm is provided with multiple suction cups.
[0011] In one specific embodiment, the detection component includes a first optical detection unit, a second optical detection unit, and a tensile testing machine.
[0012] In one specific embodiment, a baffle is provided around the periphery of the workpiece stage.
[0013] In one specific embodiment, a waste bin is also included, which is located below the tensile testing machine.
[0014] The second aspect of the present invention provides an automatic copper foil tensile strength elongation detection system, including the copper foil automatic tensile strength elongation detection device as provided in the first aspect of the present invention, and further including: a host computer, wherein the host computer is connected to a rotary table, an oven assembly, a cutting assembly, a gripping assembly and a detection assembly respectively.
[0015] The automatic copper foil tensile strength elongation testing device and system provided by the present invention have the following beneficial effects: The present invention uses machinery to replace manual operation, avoids cutting and squeezing the hands of the testing personnel, improves the safety of the device, and uses automated equipment to replace a large amount of repetitive labor, reducing labor costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0017] Figure 2 This is a schematic diagram of the cutting component in this invention.
[0018] Figure 3 This is a schematic diagram of the robotic arm in this invention.
[0019] Figure 4 This is a schematic diagram of the tensile testing machine in this invention.
[0020] Figure 5 This is a schematic diagram of the workbench structure in this invention.
[0021] Figure 6 This is a schematic diagram of the oven structure in this invention.
[0022] Figure Labels
[0023] Workbench 1
[0024] Rotary stage 2
[0025] Copper foil table 21
[0026] Oven assembly 3
[0027] Oven 31
[0028] Oven baffle 32
[0029] Cutting component 4
[0030] Upper cutter 41
[0031] Upper cutter holder 411
[0032] Downward cutting blade 42
[0033] Crawler Component 5
[0034] robotic arm 51
[0035] Suction Cup 52
[0036] Detection Component 6
[0037] First optical detection unit 61
[0038] Second optical detection unit 62
[0039] Tensile testing machine 63
[0040] Host computer 7
[0041] Workstation 100
[0042] Second workstation 200
[0043] Third workstation 300
[0044] Copper foil 900 Detailed Implementation
[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms "left side", "right side", "upper side", "lower side", "above", "below", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0047] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0048] This invention provides an automatic device for detecting the tensile strength and elongation of copper foil, such as... Figure 1 As shown, the system includes a workbench 1, which is equipped with a rotary table 2, an oven assembly 3, a cutting assembly 4, a gripping assembly 5, and a detection assembly 6. The oven assembly 3 is used to bake copper foil 900, the cutting assembly 4 is used to cut the copper foil 900, and the detection assembly 6 is used to detect the copper foil 900. The rotary table 2 is equipped with multiple sample stages 21, which can be driven to rotate between multiple workstations by the rotary table 2. The rotary table 2 is usually driven to rotate by a motor. A workstation refers to a pre-set position where the rotary table 2 needs to stop during related operations, such as a workstation for placing the copper foil 900 on the sample stage 21, a workstation for baking by the oven assembly 3, etc. The gripping assembly 5 can grip the copper foil 900 and can move between each workstation and each assembly, that is, after gripping the copper foil 900, the gripping assembly 5 can transfer the copper foil 900 between each workstation and each assembly.
[0049] In an exemplary embodiment, the rotary table 2 rotates one of the sample stages 21 to station A, where the oven assembly 3 bakes the copper foil 900 at station A. After baking, the rotary table 2 continues to rotate the sample stage 21 to station B, where the gripping assembly 5 grips the copper foil 900 at station B and sequentially transfers it to the cutting assembly 4 and the inspection assembly 6 for cutting and inspection. Preferably, the next sample stage 21 is simultaneously rotated to station A while the previous sample stage 21 is rotated to station B. That is, while the gripping assembly 5 is transferring the copper foil 900 from station B, the oven simultaneously bakes the copper foil 900 at station A, which effectively speeds up the process and improves the utilization rate of production time.
[0050] like Figure 1As shown, the oven assembly 3 is located above one of the workstations. Since baking the copper foil 900 is typically the first step in copper foil 900 inspection, the oven assembly 3 is usually located above the first workstation to which the copper foil 900 is rotated after being placed on the sample stage 21. The oven assembly 3 includes an oven 31 and a lifting drive. The oven 31 can be driven to move up and down between a position covering the copper foil 900 and a position away from the copper foil 900 by the lifting drive. The lifting drive is preferably a servo motor paired with a ball screw. Further, the oven 31 also includes an oven baffle 32. One side of the oven 31 is open, and the oven baffle 32 can slide between a position where the opening is closed and a position where the opening is open. Typically, as... Figure 6 As shown, the side wall of the oven 31 is equipped with a slide rail, and the oven baffle 32 is equipped with a slider. The slide rail and the slider are slidably connected to achieve the function of the oven baffle 32 in blocking the opening. Next, when the copper foil 900 rotates to the position below the oven 31, the oven 31 is driven to descend and approach the copper foil 900. The oven baffle 32 slides outward to open the opening, and then the oven 31 continues to descend until the inner cavity of the oven 31 completely covers the copper foil 900. Finally, the oven 31 bakes the copper foil 900. After baking is complete, the oven 31 rises, and during the rising process, the oven baffle 32 slides inward to block the opening.
[0051] like Figure 3 As shown, the gripping assembly includes a robotic arm 51 and a suction cup 52 located at the end of the robotic arm. The robotic arm can move between the workstation, the cutting assembly 4, and the detection assembly 6. The suction cup 52 can pick up the copper foil 900. Once the copper foil 900 has been baked, the robotic arm 51 grips the copper foil 900 and transfers it to the next process. For illustration, the robotic arm 51 can be a three-axis or six-axis robotic arm, preferably a six-axis robotic arm. The brand of the robotic arm can be Kuka, ABB, FANUC, Siemens, or Mitsubishi Electric.
[0052] like Figure 2As shown, the cutting assembly 4 includes an upper cutter 41, a lower cutter 42, and a position sensor. The upper cutter 41 is movable, while the lower cutter 42 is fixedly installed. The blades of the upper cutter 41 and the lower cutter 42 face each other. The sensing end of the position sensor is aligned with the position between the upper cutter 41 and the lower cutter 42, i.e., the position for cutting the copper foil 900. The position sensor can be an infrared sensor. For illustration, the cutting assembly 4 is used to cut the end face of the copper foil 900 flat. That is, when the upper cutter 41 descends to a certain extent, the blade of the upper cutter 41 contacts the blade of the lower cutter 42 to achieve cutting. Specifically, after the previous process is completed, the robotic arm 51 grasps the copper foil 900 between the upper cutter 41 and the lower cutter 42. After the position sensor senses that the copper foil 900 is in place, the upper cutter 41 descends until its blade contacts the blade of the lower cutter 42, similar to scissors, to complete the cutting of the end face of the copper foil 900. Subsequently, the robotic arm 51 rotates the copper foil 900 by 180°, and the upper cutter 41 repeats the above steps. After both ends of the copper foil 900 are cut, the robotic arm 51 transfers the cut copper foil 900 to the next process.
[0053] Furthermore, such as Figure 2 As shown, the lifting and lowering of the upper cutter 41 can be achieved through the upper cutter bracket 411, that is, the upper cutter 41 is installed in the upper cutter bracket 411, and then electric slide rails are set at both ends of the upper cutter bracket 411 to realize the lifting and lowering of the upper cutter 41. Additionally, the upper cutter 41 and the lower cutter 42 can be made of materials with high hardness and good wear resistance, such as tungsten steel or SKD11.
[0054] like Figure 1 As shown, the detection component 6 includes a first optical detection unit 61, a second optical detection unit 62, and a tensile testing machine 63. The first optical detection unit 61 and the second optical detection unit 62 are generally cameras, connected to an external terminal with a display function capable of displaying the copper foil 900 detected by the camera. The first optical detection unit 61 is used to perform conformity testing on the copper foil 900. Conformity testing refers to inspecting the appearance, defects, etc., of the copper foil 900. Typically, the terminal has a built-in detection module to automatically perform conformity testing on the copper foil 900, or the image fed back by the camera can be manually inspected. After the conformity testing is completed, the copper foil 900 is transferred by the robotic arm 51 to the tensile testing machine 63.
[0055] like Figure 4As shown, the tensile testing machine 63 includes an upper clamp 631 and a lower clamp 632. The upper clamp 631 is used to clamp one end of the copper foil 900, and the lower clamp 632 is used to clamp the other end of the copper foil 900. Both the upper clamp 631 and the lower clamp 632 include two clamping plates. One clamping plate is relatively fixed, and the other clamping plate can be driven by an air passage to move laterally so that the two clamping plates abut against each other, thereby clamping the copper foil 900 between the two clamping plates. Further, the lower clamp 632 is fixed as a whole, while the upper clamp 632 can be raised and lowered. Typically, the upper clamp 632 can be connected to a lifting mechanism to realize the lifting function. When the copper foil 900 is ready to enter the tensile testing stage, both the left and right clamping plates of the upper clamp 632 and lower clamp 631 are released, creating gaps between them (this can be understood as a flat-jaw clamping method; when clamping the copper foil 900, the jaws open first, and then close after the copper foil 900 is in place). Then, the robotic arm 51 moves the copper foil 900 into the upper clamp 631 and lower clamp 632 through the gap on the same side. Immediately afterward, the clamping plates of the upper clamp 631 and lower clamp 632 clamp together to hold the copper foil 900, and then the robotic arm 51 releases the copper foil 900. Then, the formal tensile testing of the copper foil 900 begins, with the upper clamp 631 moving upward to gradually stretch the copper foil 900 until it breaks. During this process, the tensile testing machine 63 monitors the displacement of the upper clamp 631 in real time. When the displacement of the upper clamp 631 suddenly increases within a unit time, it indicates that the copper foil 900 has been broken. The tensile testing machine 63 automatically reads the tensile force at this moment. After the test is completed, the upper clamp 631 and the lower clamp 632 are released, and the test data is automatically saved in the corresponding directory. In fact, the tensile testing machine can be an NSTRON 68 series.
[0056] Furthermore, the second optical detection unit 62 is typically a camera. The second optical detection unit 62 is aimed at the copper foil 900 held by the tensile testing machine for re-inspection to determine whether the copper foil 900 has been broken by the tensile testing machine.
[0057] Furthermore, the automatic copper foil tensile strength testing device also includes a waste bin, which is located below the tensile testing machine. Even further, the waste bin can be connected to an external air pump to create suction, drawing the broken and fallen copper foil 900 into the waste bin. Specifically, the bottom of the waste bin is connected to a negative pressure generating device, typically with a flexible hose connected to the bottom of the waste bin. This creates an airflow inside and around the waste bin, moving towards the bottom. When the copper foil 900 falls into the waste bin or approaches the top, it is affected by the airflow and drawn into the bottom of the waste bin, then sucked away by the negative pressure generating device via the hose.
[0058] Example
[0059] In this embodiment, a destructive test is performed on the copper foil 900, meaning that all copper foils 900 tested are considered defective. For example... Figure 1 As shown, the rotary table 2 is located on the left half of the worktable 1. The rotary table 2 has three sample stages 21 and three preset workstations. The rotary table 2 rotates clockwise. The three preset workstations are as follows: Figure 1 The diagram shows the first station 100, the second station 200, and the third station 300. The first station 100 is located near the periphery of the workbench 1. When the sample stage 21 rotates to the first station 100, the operator places the copper foil 900 on the sample stage 21. When the sample stage 21 rotates to the second station 200, the rotary table 2 pauses its rotation, the oven 31 descends to bake the copper foil 900, and then the rotary table 2 resumes its rotation. However, when the sample stage 21 rotates to the third station 300, the robot arm 51 picks up the copper foil 900 and transfers it to the cutting assembly 4 for cutting. The robot arm 51 then transfers the copper foil 900 to the first optical inspection unit 61, which performs a conformity test on the copper foil 900. Copper foil 900 that passes the conformity test is then transferred by the robot arm 51 to the tensile testing machine 63 for tensile testing. The second optical inspection unit 62 re-inspects the copper foil 900 to confirm that it has broken. Subsequently, the tensile testing machine 63 releases the copper foil 900, which falls naturally and is sucked into a waste bin.
[0060] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.
Claims
1. An automatic device for detecting the tensile strength and elongation of copper foil, characterized in that: The device includes a workpiece table, on which a rotary table, an oven assembly, a cutting assembly, a gripping assembly, and an inspection assembly are provided; the rotary table is provided with multiple copper foil tables, which can be driven to rotate between multiple workstations by the rotary table; the gripping assembly can grip copper foil and can move between each workstation and each assembly.
2. The automatic copper foil tensile strength and elongation detection device according to claim 1, characterized in that: The oven assembly is located above one of the workstations. The oven assembly includes an oven and a lifting drive, which can be driven to move the oven up and down between a position covering the copper foil and a position away from the copper foil.
3. The automatic copper foil tensile strength and elongation detection device according to claim 2, characterized in that: The oven includes an open oven on one side and an oven baffle plate, which can slide between a position that covers the open opening and a position that opens the open opening.
4. The automatic copper foil tensile strength and elongation detection device according to claim 1, characterized in that: The cutting assembly includes an upper cutter, a lower cutter, and a position sensor. The upper cutter is movable, and the sensing end of the position sensor is aligned with the position where the cutter cuts the copper foil.
5. The automatic copper foil tensile strength and elongation detection device according to claim 1, characterized in that: The gripping component includes a robotic arm and a suction cup located at the end of the robotic arm. The robotic arm can move between the workstation, the cutting component, and the detection component. The suction cup can pick up copper foil.
6. The automatic copper foil tensile strength and elongation detection device according to claim 5, characterized in that: The robotic arm is equipped with multiple suction cups at its end.
7. The automatic copper foil tensile strength and elongation detection device according to claim 1, characterized in that: The detection components include a first optical detection unit, a second optical detection unit, and a tensile testing machine.
8. The automatic copper foil tensile strength and elongation detection device according to claim 1, characterized in that: The workpiece stage is provided with a baffle around its perimeter.
9. The automatic copper foil tensile strength and elongation detection device according to claim 1, characterized in that: It also includes a waste bin, which is located below the tensile testing machine.
10. An automatic system for detecting the tensile strength and elongation of copper foil, characterized in that, The device for automatically detecting the tensile strength and elongation of copper foil as described in any one of claims 1 to 9 further includes: a host computer, which is connected to a rotary table, an oven assembly, a cutting assembly, a gripping assembly, and a detection assembly.