Copper foil elongation dynamic tester and clamping mechanism thereof

Abstract

The invention relates to the technical field of copper foil elongation testing, in particular to a copper foil elongation dynamic tester which comprises a main machine body, at least two third sliding rails are arranged on the top of the main machine body in the length direction of the main machine body, and clamping mechanism bodies are arranged on the third sliding rails. The clamping mechanism body comprises a sliding plate capable of being arranged on the third sliding rail in a sliding mode, a clamping assembly capable of fixing the copper foil is arranged on the sliding plate, the clamping assembly comprises a vertical plate fixed to the top of the sliding plate, and the clamping assembly is further provided with a moving plate capable of moving on one side of the vertical plate. According to the copper foil clamping device, the positioning assembly is arranged on the clamping plate, the positioning assembly further comprises the positioning block, the positioning block is further provided with the positioning groove, when the copper foil is clamped, the copper foil can be inserted into the positioning groove in advance, the two sides of the copper foil make contact with the positioning groove to be positioned in advance, and the copper foil is prevented from inclining during clamping.

Description

Technical Field

[0001] The present invention relates to the technical field of copper foil elongation testing, in particular to a copper foil elongation dynamic tester and a clamping mechanism thereof. Background Art

[0002] Copper foil, as an important electronic material, is widely used in the electronics industry, such as in the manufacture of printed circuit boards (PCBs). With the continuous miniaturization and advancement of high-performance electronic products, the performance requirements for copper foil are becoming increasingly stringent, with elongation being a key performance indicator. Elongation reflects the ability of copper foil to deform under tension and is crucial for evaluating its flexibility, bending resistance, and reliability in complex electronic structures.

[0003] Specifically, existing clamping devices often suffer from inaccurate positioning when clamping copper foil. This can easily cause tilting or offsetting during the clamping process, resulting in uneven force distribution during the stretching process. This uneven force distribution not only complicates the deformation of the copper foil and increases test errors, but can also cause cracks in the foil due to localized excessive force before the foil reaches its actual extension limit, thus affecting the accuracy of the test results. Summary of the Invention

[0004] The purpose of the present invention is to provide a copper foil elongation dynamic tester and a clamping mechanism thereof. A positioning assembly is provided on the clamping plate. Since the positioning assembly also includes a positioning block, and the positioning block is also provided with a positioning groove, when the copper foil is clamped, the copper foil can be pre-inserted into the positioning groove, and the two sides of the copper foil are in contact with the positioning groove for pre-positioning, thereby preventing the copper foil from tilting when clamped.

[0005] In order to solve the problems of the prior art, the present invention provides a copper foil elongation dynamic tester, comprising a main body, at least two third slide rails are arranged on the top of the main body along its length direction, a clamping mechanism body is arranged on the third slide rail, the clamping mechanism body includes a slide plate that can be slidably arranged on the third slide rail, the slide plate is provided with a clamping assembly that can fix the copper foil, the clamping assembly includes a vertical plate fixed on the top of the slide plate, the clamping assembly is also provided with a movable plate that can move on one side of the vertical plate, and a tension sensor for detecting the tension of the copper foil is also provided between the movable plate and the vertical plate, a positioning assembly for positioning the copper foil is also provided on one side of the movable plate, and the main body is also provided with a crack detection device that can move back and forth along the length direction of the copper foil and is used to detect the internal crack condition of the copper foil.

[0006] Preferably, the positioning assembly includes two fixed plates arranged on the side of the movable plate, a threaded rod and a sliding rod are arranged between the two fixed plates, the positioning assembly also includes a positioning block slidably arranged on the sliding rod, and the threaded rod is connected to the positioning block by a thread, one end of the threaded rod is connected to a rotating wheel, and the positioning block is also provided with a positioning groove for inserting copper foil.

[0007] Preferably, a first slide rail is vertically arranged at the center position of one side of the movable plate, so two synchronously moving clamping plates are slidably arranged on the first slide rail, and the clamping portion of each clamping plate is also evenly distributed with several serrated structures along its length direction. The clamping assembly also includes a driving mechanism fixed on the movable plate for driving the clamping plates to move synchronously.

[0008] Preferably, the driving mechanism includes two transmission plates rotatably arranged on the movable plate, and the transmission plate is movably connected to the clamping plate. The driving mechanism also includes a second slide rail horizontally fixed on the movable plate, and a movable block is slidably arranged on the second slide rail. The movable block is rotatably connected to the transmission plate. The clamping assembly also includes a first telescopic driving member fixed on the movable plate and used to drive the movable block to move back and forth.

[0009] Preferably, the clamping assembly further includes guide rods distributed in a matrix on the movable plate and slidingly engaged with the vertical plate.

[0010] Preferably, the top of the main body is further provided with a photoelectric sensor arranged along its length direction, and the bottom of the slide is further provided with a laser emitter capable of emitting laser and irradiating the laser onto the photoelectric sensor.

[0011] Preferably, the clamping mechanism body also includes a first driving mechanism for driving the slide to reciprocate along the length direction of the third slide rail, the first driving mechanism includes a screw arranged along the length direction of the main body, and the screw is connected to the slide by a thread, the first driving mechanism also includes a first rotating driving component fixed to the side of the main body, and the output end of the first rotating driving component is connected to the screw.

[0012] Preferably, the crack detection device includes a support frame that can move back and forth along the length direction of the main body, and the support frame is also provided with an ultrasonic flaw detector that can move up and down, and the support frame is also provided with a second telescopic driving member that can drive the ultrasonic flaw detector to move up and down, and the crack detection device also includes a second driving mechanism for driving the support frame to move back and forth.

[0013] Preferably, the second driving mechanism includes a rack distributed along the length direction of the main body, and the second driving mechanism also includes a second rotating driving member fixed to the bottom of the support frame, and the output end of the second rotating driving member is connected to a gear meshing with the rack.

[0014] A copper foil clamping mechanism includes the copper foil elongation dynamic tester of the above solution.

[0015] The beneficial effects of the present invention compared to the prior art are:

[0016] 1. The present application provides a positioning assembly on the movable plate, which includes a movable positioning block. In actual operation, the operator can rotate the wheel in advance, and the rotation of the rotating wheel will drive the threaded rod to rotate synchronously. Based on the principle of threaded transmission, the rotation of the threaded rod will cause the positioning block to move in a specific direction. When the positioning block is adjusted to the appropriate position, the operator can insert one end of the copper foil into the positioning groove. At this time, the two sides of the copper foil will fit tightly against the inner wall of the positioning groove, and then the copper foil will be firmly clamped by the clamping plate, and the other end of the copper foil will be positioned and clamped according to the same method as above. This positioning and clamping method avoids the problem of tilting or offsetting of the copper foil due to inaccurate positioning during the clamping process, laying a solid foundation for subsequent elongation measurement.

[0017] 2. During the dynamic testing of copper foil elongation, this application also utilizes multiple detection technologies to further improve the accuracy and reliability of the test results. Photoelectric sensors are installed along the length of the main body, and a laser generator is also installed at the bottom of the slide. During the test, the laser generator emits laser light, which accurately illuminates the photoelectric sensor. The photoelectric sensor can quickly convert the received optical signal into an electrical signal. By analyzing and processing these electrical signals, the distance the copper foil has stretched can be detected. In addition, this application also utilizes ultrasonic flaw detection technology to detect defects within the copper foil. Specifically, by approaching the bottom surface of the copper foil, the ultrasonic flaw detector transmits ultrasonic waves into the copper foil material. When the ultrasonic waves encounter defects or interfaces within the copper foil, they are reflected or scattered. The ultrasonic flaw detector can receive these reflected or scattered waves and convert them into electrical signals. By in-depth analysis of these electrical signals, the presence of defects within the copper foil, as well as the specific location and size of the defects, can be determined. This ultrasonic flaw detection technology is used in conjunction with photoelectric sensors and laser generators to detect how long the copper foil will be stretched before cracks occur, realizing non-contact, dynamic testing of the elongation of the copper foil. This not only improves test efficiency, but also significantly enhances the accuracy and reliability of test results, providing strong technical support for the quality control and performance evaluation of copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first three-dimensional structural schematic diagram of the copper foil elongation dynamic tester and its clamping mechanism of the present invention.

[0019] Figure 2This is a second three-dimensional structural schematic diagram of the copper foil elongation dynamic tester and its clamping mechanism of the present invention.

[0020] Figure 3 The figure is a schematic top view of the structure of the copper foil elongation dynamic tester and its clamping mechanism of the present invention.

[0021] Figure 4 It is a front view structural schematic diagram of the copper foil elongation dynamic tester and its clamping mechanism of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the copper foil elongation dynamic tester and the clamping mechanism body of the clamping mechanism of the present invention.

[0023] Figure 6 The present invention is a schematic diagram of a top view of the structure of a clamping mechanism body of a copper foil elongation dynamic tester and a clamping mechanism thereof.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning components of the copper foil elongation dynamic tester and the clamping mechanism thereof of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the copper foil elongation dynamic tester and the crack detection device of the clamping mechanism thereof of the present invention.

[0026] Figure 9 The invention is a copper foil elongation dynamic tester and a clamping mechanism thereof Figure 8 Enlarged structural diagram at point A in the middle.

[0027] The numbers in the figure are: 1, main body; 2, clamping mechanism body; 21, first driving mechanism; 211, first rotating driving member; 212, lead screw; 22, slide plate; 23, clamping assembly; 231, vertical plate; 232, moving plate; 2321, guide rod; 2322, first slide rail; 2323, clamping plate; 2324, transmission plate; 2325, moving block; 2326, first telescopic driving member; 2327, second slide rail; 233, tension transmission member Sensor; 234, positioning assembly; 2341, fixing plate; 2342, threaded rod; 2343, sliding rod; 2344, positioning block; 2345, positioning groove; 2346, rotating wheel; 3, crack detection device; 31, support frame; 311, ultrasonic flaw detector; 312, second telescopic drive member; 32, second drive mechanism; 321, rack; 322, second rotary drive member; 3221, gear; 4, third slide rail; 5, photoelectric sensor. DETAILED DESCRIPTION

[0028] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1-9 As shown, the present invention provides a copper foil elongation dynamic tester, including a main body 1, at least two third slide rails 4 are arranged on the top of the main body 1 along its length direction, a clamping mechanism body 2 is arranged on the third slide rail 4, the clamping mechanism body 2 includes a slide plate 22 that can be slidably arranged on the third slide rail 4, the slide plate 22 is provided with a clamping assembly 23 that can fix the copper foil, the clamping assembly 23 includes a vertical plate 231 fixed on the top of the slide plate 22, the clamping assembly 23 is also provided with a movable plate 232 that can move on one side of the vertical plate 231, and a tension sensor 233 for detecting the tension of the copper foil is also provided between the movable plate 232 and the vertical plate 231, a positioning assembly 234 for positioning the copper foil is also provided on one side of the movable plate 232, and the main body 1 is also provided with a crack detection device 3 that can move back and forth along the length direction of the copper foil and is used to detect the internal crack condition of the copper foil.

[0030] This copper foil elongation dynamic tester is primarily used to test the elongation of copper foil. During operation, the copper foil to be tested is first placed in the clamping assembly 23 of the clamping mechanism body 2, and the copper foil is positioned using the positioning assembly 234. The crack detection device 3 reciprocates along the length of the copper foil to detect cracks within the foil. By continuously moving the detection position, a comprehensive understanding of the presence of cracks in different locations of the copper foil during the stretching process and the specific crack conditions can be obtained.

[0031] The positioning assembly 234 includes two fixed plates 2341 arranged on the side of the movable plate 232, and a threaded rod 2342 and a sliding rod 2343 are arranged between the two fixed plates 2341. The positioning assembly 234 also includes a positioning block 2344 slidably arranged on the sliding rod 2343, and the threaded rod 2342 is connected to the positioning block 2344 by a thread. One end of the threaded rod 2342 is connected to a rotating wheel 2346, and the positioning block 2344 is also provided with a positioning groove 2345 for inserting copper foil.

[0032] A first slide rail 2322 is vertically provided at the center of one side of the movable plate 232. Two synchronously moving clamping plates 2323 are slidably provided on the first slide rail 2322, and a clamping portion of each clamping plate 2323 is evenly distributed along its length. The clamping assembly 23 also includes a driving mechanism fixed to the movable plate 232 for driving the synchronous movement of the clamping plates 2323. The driving mechanism includes two transmission plates 2324 rotatably provided on the movable plate 232, and the transmission plates 2324 are movably connected to the clamping plates 2323. The driving mechanism also includes a second slide rail 2327 horizontally fixed to the movable plate 232, and a moving block 2325 is slidably provided on the second slide rail 2327. The moving block 2325 is rotatably connected to the transmission plates 2324. The clamping assembly 23 also includes a first telescopic driving member 2326 fixed to the movable plate 232 and for driving the moving block 2325 to move back and forth. The clamping assembly 23 further includes guide rods 2321 distributed in a matrix on the movable plate 232 and slidingly engaged with the vertical plate 231 .

[0033] When the copper foil needs to be clamped, the first telescopic drive member 2326 activates, driving the movable block 2325 to move horizontally on the second slide rail 2327. The movement of the movable block 2325 drives the transmission plate 2324, to which it is rotatably connected, to rotate. This rotation, in turn, drives the clamping plate 2323, to which it is movably connected, to slide vertically on the first slide rail 2322. Due to the interconnected design of the two transmission plates 2324 and the clamping plates 2323, the two clamping plates 2323 can move synchronously, gradually approaching and clamping the copper foil. The serrated structure on the clamping plates 2323 increases friction with the copper foil, ensuring a secure clamping force. The tension sensor 233 monitors changes in tension in real time. When the copper foil needs to be released, the first telescopic drive member 2326 drives the movable block 2325 to move in the opposite direction, causing the clamping plates 2323 to slide in the opposite direction, releasing the copper foil. In this way, the clamping assembly 23 can achieve reliable clamping and loosening of the copper foil, providing a guarantee for accurate testing of the copper foil elongation dynamic tester.

[0034] When the copper foil needs to be positioned, the operator manually rotates the rotating wheel 2346, and the rotating wheel 2346 drives the threaded rod 2342 to rotate. Since the threaded rod 2342 is connected to the positioning block 2344 by a thread, and the positioning block 2344 is slidably set on the slide bar 2343, the positioning block 2344 will move along the axial direction of the slide bar 2343. After moving the positioning block 2344 to the appropriate position, the operator can insert one end of the copper foil into the positioning groove 2345. At this time, the two sides of the copper foil will fit tightly against the inner wall of the positioning groove 2345. Subsequently, the copper foil is firmly clamped by the clamping plate 2323, and the other end of the copper foil is also positioned and clamped according to the same method as described above. This positioning and clamping method avoids the problem of the copper foil tilting or offsetting due to inaccurate positioning during the clamping process.

[0035] A photoelectric sensor 5 is also located along the length of the main body 1, and a laser emitter is also located at the bottom of the slide 22, capable of emitting laser light and directing it toward the photoelectric sensor 5. During operation of the copper foil elongation dynamic tester, as the slide 22 slides on the third rail 4 to stretch the copper foil, the laser emitter located at the bottom of the slide 22 moves accordingly and continuously emits laser light. The laser light then irradiates the photoelectric sensor 5, which is located along the length of the main body 1 and is also located at the top. Based on information such as the time and position changes of the laser signal received by the photoelectric sensor 5, combined with the initial position and movement direction of the slide 22, the travel distance and speed of the slide 22 can be calculated. Since the movement of the slide 22 is directly related to the stretching of the copper foil, the elongation of the copper foil during the stretching process can be determined by measuring the travel distance of the slide 22. Combined with the tensile force data detected by the tensile force sensor 233 and the detection results of the internal crack condition of the copper foil by the crack detection device 3, a comprehensive and accurate assessment of the copper foil's performance indicators, such as its elongation and internal crack condition, can be achieved.

[0036] The clamping mechanism body 2 also includes a first driving mechanism 21 for driving the slide 22 to reciprocate along the length direction of the third slide rail 4. The first driving mechanism 21 includes a screw 212 arranged along the length direction of the main body 1, and the screw 212 is connected to the slide 22 by a thread. The first driving mechanism 21 also includes a first rotating driving member 211 fixed to the side of the main body 1, and the output end of the first rotating driving member 211 is connected to the screw 212.

[0037] When a tensile test is required on the copper foil, the first rotary drive member 211 begins operating, its output end driving the lead screw 212 to rotate. Because the lead screw 212 is threadedly connected to the slide 22, the rotation of the lead screw 212 causes the slide 22 to move along its axial direction. When the first rotary drive member 211 rotates forward, the lead screw 212 drives the slide 22 in one direction, thereby stretching the copper foil. When the first rotary drive member 211 rotates backward, the lead screw 212 drives the slide 22 in the opposite direction, resetting the clamping mechanism 2 and preparing for the next test.

[0038] The crack detection device 3 includes a support frame 31 that can reciprocate along the length of the main body 1. The support frame 31 is also equipped with an ultrasonic flaw detector 311 that can move up and down. The support frame 31 is also equipped with a second telescopic drive member 312 that can drive the ultrasonic flaw detector 311 to move up and down. The crack detection device 3 also includes a second drive mechanism 32 for driving the support frame 31 to reciprocate. The second drive mechanism 32 includes a rack 321 distributed along the length of the main body 1 and a second rotary drive member 322 fixed to the bottom of the support frame 31. The output end of the second rotary drive member 322 is connected to a gear 3221 that meshes with the rack 321.

[0039] By placing an ultrasonic flaw detector 311 close to the bottom surface of the copper foil, it transmits ultrasonic waves into the copper foil. When the ultrasonic waves encounter defects or interfaces within the copper foil, they are reflected or scattered. The ultrasonic flaw detector 311 receives these reflected or scattered waves and converts them into electrical signals. By analyzing these electrical signals, it is possible to determine whether there are defects within the copper foil, as well as the specific location and size of the defects.

[0040] A copper foil clamping mechanism includes the copper foil elongation dynamic tester of the above solution.

[0041] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. Copper foil elongation dynamic tester, characterized by: The invention comprises a main body (1), wherein at least two third slide rails (4) are arranged on the top of the main body (1) along the length direction thereof, a clamping mechanism body (2) is arranged on the third slide rails (4), the clamping mechanism body (2) comprises a slide plate (22) which can be slidably arranged on the third slide rails (4), the slide plate (22) is provided with a clamping assembly (23) which can fix the copper foil, the clamping assembly (23) comprises a vertical plate (231) fixed on the top of the slide plate (22), The clamping assembly (23) is further provided with a movable plate (232) capable of moving on one side of the vertical plate (231), and a tension sensor (233) for detecting the tension of the copper foil is further provided between the movable plate (232) and the vertical plate (231). A positioning assembly (234) capable of positioning the copper foil is further provided on one side of the movable plate (232). The main body (1) is further provided with a crack detection device (3) capable of reciprocating along the length direction of the copper foil and for detecting crack conditions inside the copper foil.

2. The copper foil elongation dynamic tester according to claim 1, characterized in that: The positioning assembly (234) includes two fixed plates (2341) arranged on the side of the movable plate (232), a threaded rod (2342) and a sliding rod (2343) are arranged between the two fixed plates (2341), and the positioning assembly (234) also includes a positioning block (2344) slidably arranged on the sliding rod (2343), and the threaded rod (2342) and the positioning block (2344) are connected by threads, one end of the threaded rod (2342) is connected to a rotating wheel (2346), and the positioning block (2344) is also provided with a positioning groove (2345) for inserting copper foil.

3. The copper foil elongation dynamic tester according to claim 1, characterized in that: A first slide rail (2322) is vertically provided at the center position of one side of the movable plate (232), so two synchronously moving clamping plates (2323) are slidably provided on the first slide rail (2322), and a clamping portion of each clamping plate (2323) is evenly distributed with a plurality of serrated structures along its length direction. The clamping assembly (23) further includes a driving mechanism fixed on the movable plate (232) for driving the clamping plates (2323) to move synchronously.

4. The copper foil elongation dynamic tester according to claim 3, characterized in that: The driving mechanism includes two transmission plates (2324) rotatably arranged on the movable plate (232), and the transmission plates (2324) are movably connected to the clamping plate (2323). The driving mechanism also includes a second slide rail (2327) horizontally fixed on the movable plate (232), and a movable block (2325) is slidably arranged on the second slide rail (2327), and the movable block (2325) is rotatably connected to the transmission plates (2324). The clamping assembly (23) also includes a first telescopic driving member (2326) fixed on the movable plate (232) and used for driving the movable block (2325) to move back and forth.

5. The copper foil elongation dynamic tester according to claim 4, characterized in that: The clamping assembly (23) further comprises guide rods (2321) distributed in a matrix on the movable plate (232) and slidingly engaged with the vertical plate (231).

6. The copper foil elongation dynamic tester according to claim 1, characterized in that: The top of the main body (1) is also provided with a photoelectric sensor (5) arranged along its length direction, and the bottom of the slide plate (22) is also provided with a laser emitter capable of emitting laser light and irradiating the laser light onto the photoelectric sensor (5).

7. The copper foil elongation dynamic tester according to claim 1, characterized in that: The clamping mechanism body (2) further comprises a first driving mechanism (21) for driving the slide plate (22) to reciprocate along the length direction of the third slide rail (4); the first driving mechanism (21) comprises a lead screw (212) arranged along the length direction of the main body (1), and the lead screw (212) is connected to the slide plate (22) via a thread; the first driving mechanism (21) further comprises a first rotating driving member (211) fixed to the side of the main body (1); the output end of the first rotating driving member (211) is connected to the lead screw (212).

8. The copper foil elongation dynamic tester according to claim 1, characterized in that: The crack detection device (3) comprises a support frame (31) capable of reciprocating along the length direction of the main body (1), and an ultrasonic flaw detector (311) capable of moving up and down is also provided on the support frame (31), and a second telescopic driving member (312) capable of driving the ultrasonic flaw detector (311) to move up and down is also provided in the support frame (31), and the crack detection device (3) further comprises a second driving mechanism (32) for driving the support frame (31) to move back and forth.

9. The copper foil elongation dynamic tester according to claim 8, characterized in that: The second driving mechanism (32) includes a rack (321) distributed along the length direction of the main body (1), and the second driving mechanism (32) also includes a second rotating driving member (322) fixed to the bottom of the support frame (31), and the output end of the second rotating driving member (322) is connected to a gear (3221) meshing with the rack (321).

10. A copper foil clamping mechanism, comprising the copper foil elongation dynamic tester according to any one of claims 1 to 9.

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