CN111693390A - Bending-resistant test equipment - Google Patents
Bending-resistant test equipment Download PDFInfo
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- CN111693390A CN111693390A CN202010751740.4A CN202010751740A CN111693390A CN 111693390 A CN111693390 A CN 111693390A CN 202010751740 A CN202010751740 A CN 202010751740A CN 111693390 A CN111693390 A CN 111693390A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Electromagnetism (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of copper foil test equipment, in particular to bending-resistant test equipment, which comprises a test device, a bending-resistant test device and a bending-resistant test device, wherein the test device comprises a test device body; the testing device comprises a base, a bending module arranged on the base and a reciprocating module connected with the bending module; the bending module comprises two bending test boards, test jigs respectively connected with the bending test boards, a first slide block and two second slide blocks; the base comprises a vertical slide rail and inclined slide rails which are respectively arranged on two opposite sides of the vertical slide rail; each bending test board is respectively pivoted with the first slide block; the first sliding block is connected with the vertical sliding rail in a sliding manner; each second sliding block is respectively pivoted with the corresponding bending test plate; each second sliding block is respectively connected with the corresponding inclined sliding rail in a sliding manner; the reciprocating motion module is connected with the first sliding block to drive the first sliding block to reciprocate, so that the bending test board and the test fixture are driven to perform folding motion or opening motion. The invention provides bending-resistant testing equipment which is automatic, standardized, intelligent, time-saving and labor-saving.
Description
Technical Field
The invention relates to the technical field of copper foil testing equipment, in particular to bending-resistant testing equipment.
Background
With the trend of miniaturization and miniaturization of communication and electronic equipment, copper foils and various materials also tend to be thinner, and the thickness requirement is thinner and thinner, and the circuits are smaller and denser. With the further improvement of the requirements, the performance requirements of many materials are changed, and many material parameters which are not included and paid attention to in the past are gradually and more concerned. However, corresponding standards and detection means are not kept up with the above-mentioned method, so that performance tests required by many materials are completed in a compact manner, time and labor are consumed, and the actual performance of the materials cannot be truly reflected by the test process and the results.
In many applications, such as folding mobile phones, mobile phone retractable lenses, bending screen computers, and intelligent wearable devices, in order to meet the requirements of limited space and repeated folding and bending of the devices, the use of flexible substrates (usually having more than 3 layers and a thickness of more than 100umm, such as mobile phone screens, copper foils, and flexible multilayer circuit boards with copper-clad foils, hereinafter collectively referred to as "multilayer composite materials") has become a trend. For example, a foldable screen of a mobile phone requires that the screen can be bent 10 ten thousand times, and a retractable lens can meet the requirements of 5 ten thousand times.
Based on the above, in a product performance test, a resistance change and a final bending resistance frequency of a multi-layer composite material (especially, a copper foil used as a circuit substrate) in a micro-radius bending process need to be tested, and the bending resistance of the multi-layer composite material becomes an important index for evaluating the multi-layer composite material, and is increasingly emphasized by various suppliers and manufacturers.
At present, the trace required by the small-radius bending resistance test of the multilayer composite material in the industry is shown in figure 1, so that the optimal simulation test effect is achieved; however, the current industry test is only as follows in fig. 2 (side view): wherein A is a cylinder with the radius of the material test; b is made of material, one end of which is fixed and the other end of which is bent. When in test, one end of the material B is fixed on the clamping plate, the other end of the material B is clamped by the clamping plate which swings back and forth, and then the purpose of testing the bending fatigue resistance is achieved by bending the cylinder A back and forth.
There are a number of major problems with this approach: (1) the motion curve of the material B obviously does not accord with the actual requirement, and the performance of the multilayer composite material can be represented only to a certain degree; (2) the roundness of A influences the test effect: the bending radius is generally 0.2-1.0mm, and A is difficult to grind into a cylinder with a small radius and has enough rigidity (cannot be pulled by materials), so that the actual bending radius is deviated; (3) the material is not easily attached to the a cylinder: in the bending mode of the following figure, if the material is a little thicker, the material is easily not attached to the cylinder A, and the actual bending radius is larger; (4) the two ends of the material B need to be tensioned to ensure that the material cannot deform in the bending process and can be well attached to the cylinder A. But the material tension applied to B affects the actual measurement effect; (5) only one sample can be processed at a time, and the test result cannot be confirmed; (6) the physical changes in the bending process, such as resistance value, fracture condition and the like, need to be manually measured and observed, and the labor are wasted.
The above testing method makes the whole testing process very time-consuming and laborious, and the testing result of the testing instrument often cannot accurately represent the actual performance of the material due to the congenital defects existing in the design and the manufacturer of the testing instrument.
Disclosure of Invention
In order to solve the technical problems, the invention provides bending-resistant testing equipment which realizes automation, standardization, intellectualization, time saving and labor saving.
The invention adopts the following technical scheme:
a bending-resistant test device comprises a test device; the testing device comprises a base, a bending module arranged on the base and a reciprocating module connected with the bending module; the bending module comprises two bending test plates, test jigs respectively connected with the bending test plates, a first slide block and two second slide blocks; the base comprises a vertical slide rail and inclined slide rails which are respectively arranged on two opposite sides of the vertical slide rail; each bending test plate is respectively pivoted with the first slide block; the first sliding block is connected with the vertical sliding rail in a sliding manner; each second sliding block is respectively pivoted with the corresponding bending test plate; each second sliding block is respectively connected with the corresponding inclined sliding rail in a sliding manner; the reciprocating motion module is connected with the first sliding block to drive the first sliding block to reciprocate, so that the bending test board and the test fixture are driven to perform folding motion or opening motion.
The further improvement of the technical scheme is that the number of the first sliding blocks is two, the two first sliding blocks are respectively connected to two ends of the bending test plate, a transmission plate is further connected between the two first sliding blocks, and the transmission plate is connected with the reciprocating motion module.
The technical scheme is further improved in that the height of the end, close to the vertical slide rail, of the inclined slide rail is smaller than the height of the end, far away from the vertical slide rail, of the inclined slide rail.
The technical scheme is further improved in that the test fixture comprises two fixing plates which are arranged in parallel relatively, and the two fixing plates are detachably mounted above the two bending test plates respectively.
The technical scheme is further improved in that two ends of the two bending test plates are respectively connected through a rotating shaft, and the rotating shaft is connected with the vertical slide rail; the bending test plate is also provided with a plurality of contact press blocks which are evenly distributed on two sides of the bending test plate.
The technical scheme is further improved in that the testing device further comprises a safety protection piece, wherein the safety protection piece comprises an electric push rod and a protection plate connected with the electric push rod; the backplate is including connecting electric putter's long slab, connect respectively the butt board at long slab both ends, the upper portion of butt board is provided with oblique platform.
The technical scheme is further improved in that the reciprocating motion module comprises an eccentric transmission module and a driving module, and the eccentric transmission module is connected with the driving module.
The technical scheme is further improved in that the eccentric transmission module comprises a connecting rod, a movable seat eccentrically connected with the connecting rod, a circular plate fixed on the movable seat and connected with the driving module, and a plurality of optical axes slidably connected with the movable seat; and two ends of the optical axis are respectively provided with a limiting seat, and the limiting seats are fixedly arranged on the circular plate.
The technical scheme is further improved in that the driving module comprises a driving motor, a transmission belt and a transmission shaft, one end of the transmission belt is connected with the driving motor, the other end of the transmission belt is connected with the transmission shaft, and the transmission shaft is connected with the eccentric transmission module; the transmission shaft is provided with at least two bearings, and the bottom of each bearing is provided with a heightening seat.
The technical scheme is further improved by further comprising an outer case, a computer arranged in the outer case and a multi-channel resistance tester, wherein the multi-channel resistance tester is respectively connected with the computer and the testing device.
The invention has the beneficial effects that:
the invention realizes the accurate bending, automatic real-time measurement and resistance value recording of the flexible circuit board by arranging the testing device for testing the bending fatigue resistance of the flexible circuit board and matching with the real-time resistance measurement and recording system, and also has the function of resistance value increase judgment, wherein the testing device can realize accurate radius bending and can change the bending radius for testing, when the driving motor of the driving module is started, the eccentric transmission module is driven to move, thereby driving the connecting rod to pull the transmission plate of the bending module to reciprocate up and down, when the connecting rod moves up and down, the bending test board is driven to move downwards along the vertical slide rail, the two ends of the bending test board are driven to bend along the folding direction under the action of the inclined slide rail to realize the bending of the material, meanwhile, different bending radiuses need test jigs with different thicknesses, and the bending radiuses are accurately guaranteed under the action of the inclined slide rails. The invention gets rid of the current situations of complicated and unreliable measurement in the past, and enables the measurement process of the multilayer composite material to be automatic, the test process to be standardized and the result judgment to be intelligent through the automation and standardization of each bending action and the repeatability and reproducibility of each measurement mode, thereby reducing the human error and improving the measurement efficiency.
Drawings
FIG. 1 is a drawing of a bend trace;
FIG. 2 is a schematic view of a conventional bending resistance test;
FIG. 3 is a schematic structural view of a bend resistance test apparatus of the present invention;
FIG. 4 is a schematic structural diagram of a testing device of the bending resistance testing apparatus of FIG. 3;
FIG. 5 is an enlarged view of a portion of the testing device of FIG. 4;
FIG. 6 is a partial exploded view of the testing device of FIG. 4;
FIG. 7 is a front view of the testing device of FIG. 4;
FIG. 8 is a side view of the testing device of FIG. 4;
FIG. 9 is a schematic view of the safety shield of the testing device of FIG. 4;
fig. 10 is a schematic bending diagram of a testing device of the bending-resistant testing apparatus of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the illustration in the embodiment of the present invention.
As shown in fig. 3 to 10, a bending resistance test apparatus includes a test device 10; the testing device 10 comprises a base 20, a bending module 30 arranged on the base 20 and a reciprocating module connected with the bending module 30; the bending module 30 includes two bending test boards 31, a test fixture 32 respectively connected to the bending test boards 31, a first slider 33 and two second sliders 34; the base 20 comprises a vertical slide rail 21 and inclined slide rails 22 respectively arranged at two opposite sides of the vertical slide rail 21; each bending test board 31 is pivoted with the first slide block 33; the first sliding block 33 is connected with the vertical sliding rail 21 in a sliding manner; each second slider 34 is pivotally connected to the corresponding bending test board 31; each second sliding block 34 is connected with the corresponding inclined sliding rail 22 in a sliding manner; the reciprocating module is connected to the first slide block 33 to drive the first slide block 33 to reciprocate, so as to drive the bending test board 31 and the test fixture 32 to perform a folding motion or an opening motion.
The bending test board 31 can also be changed from a vertical plus oblique movement to a vertical plus oblique movement.
As shown in fig. 3, the resistance tester further includes an outer case 70, a computer 71 disposed in the outer case 70, and a multi-channel resistance tester 72, wherein the multi-channel resistance tester 72 is connected to the computer 71 and the testing device, respectively.
The invention also comprises a resistance real-time measuring and recording system which can test, collect, record and analyze a plurality of sample values in real time and comprises a computer central control system and a multi-channel resistance inspection instrument. The central computer control system is a configuration software written in a similar C language, and is physically connected with the PLC system of the testing device 10 and the multi-channel resistor polling instrument through a communication line, and controls the bending motion body and the multi-channel resistor polling instrument to work and stop through the communication of the configuration software, the PLC and the multi-channel resistor polling instrument, collects operation data and test data, and is also a man-machine operation interface of the whole device. The multi-channel resistance polling instrument is a resistance measuring instrument, and the precision, the testing mode and the like of the multi-channel resistance polling instrument are important guarantees of the measuring result; the system also has an overrun proportion pause function, and realizes single-channel overrun pause; wherein, the data record can adopt a mechanical data printing mode; other programming languages can be used to program the computer control software, or other existing configuration software can be used to implement the control and communication functions.
The quantity of first slider 33 sets up to two, and two first sliders 33 are connected respectively in the both ends of expecting test panel 31 of buckling, still are connected with driving plate 35 between two first sliders 33, and reciprocating motion module is connected to driving plate 35. The reciprocating module moves up and down to drive the driving plate 35 to move, so that the bending fatigue test of the product is realized.
The setting height of the end of the inclined slide rail 22 close to the vertical slide rail 21 is less than the setting height of the end of the inclined slide rail 22 far from the vertical slide rail 21.
As shown in fig. 5 and fig. 6, the testing fixture 32 includes two fixing plates 321 disposed in parallel, and the two fixing plates 321 are detachably mounted above the two bending test boards 31, respectively. The bending is formed by the synthesis of the vertical and oblique motions of the bending test plate 31, so that the bending-resistant fatigue test of the product fixed on the two fixing plates 321 is realized, the accurate positioning of 0 degree and 90 degrees in the bending process is realized under the action of the eccentric motion, the accuracy of the test result is ensured, and the accurate guarantee of the bending radius can be realized by replacing the test jigs 32 with different thicknesses according to the actual conditions.
The two bending test plates 31 can also be moved in such a way that the bending is driven on both sides separately. The adjustment of the bending radius adjusts the front-back distance of the bending test board 31 through screws.
As shown in fig. 5 and fig. 6, two ends of the two bending test boards 31 are connected by a rotating shaft 36, and the rotating shaft 36 is connected to the vertical slide rail 21; the bending test board 31 is further provided with a plurality of contact pressing blocks 37, and the contact pressing blocks 37 are equally and evenly arranged on two sides of the bending test board 31. The bending test board 31 can perform the reciprocating motion through the rotation shaft 36, so that the bending resistance test effect is improved, and the test efficiency is improved.
As shown in FIG. 5 and FIG. 7, the bending test plate 31 is further provided with a plurality of contact pads 37, and the contact pads 37 are equally distributed on both sides of the bending test plate 31. Set up contact briquetting 37, be convenient for with the fixed electric connection of the product that awaits measuring and multichannel resistance tester 72, realize real-time recording resistance, improve measurement of efficiency.
The reciprocating module comprises an eccentric transmission module 40 and a driving module 50, wherein the eccentric transmission module 40 is connected with the driving module 50.
As shown in fig. 7, the eccentric transmission module 40 includes a connecting rod 41, a movable seat 42 eccentrically connected to the connecting rod 41, a circular plate 43 fixed to the movable seat 42 and connected to the driving module 50, and a plurality of optical axes 44 slidably connected to the movable seat 42; limiting seats 45 are respectively arranged at two ends of the plurality of optical axes 44, and the limiting seats 45 are fixedly arranged on the circular plate 43. Under the effect of eccentric motion, realize 0 °, 90 accurate location of in-process of buckling, ensure that the result of test is accurate, improve efficiency of software testing, labour saving and time saving.
The angular adjustment of the eccentric transmission module 40 may also be arranged as a bump bending.
As shown in fig. 8, the driving module 50 includes a driving motor 51, a transmission belt 52, and a transmission shaft 53, wherein one end of the transmission belt 52 is connected to the driving motor 51, the other end of the transmission belt 52 is connected to the transmission shaft 53, and the transmission shaft 53 is connected to the eccentric transmission module 40; the transmission shaft 53 is provided with at least two bearings 531, and the bottom of the bearings 531 is provided with an elevated seat 532. The bearing 531 is arranged, so that the transmission efficiency is effectively ensured, the driving stability of the invention is further improved, and the practicability is strong.
As shown in fig. 9, the testing device 10 further includes a safety guard 60 for abutting against the driving plate 35, wherein the safety guard 60 includes an electric push rod 61 and a guard plate connected to the electric push rod 61; the backplate is including the long plate 62 of connecting electric putter 61, connect respectively long plate 62 both ends and with the butt plate 63 of driving plate 35 contact, and the upper portion of butt plate 63 is provided with oblique platform 631, and driving plate 35 offers the chute 351 that sets up with the cooperation of oblique platform 631. The testing device 10 is effectively protected, the testing device 10 is prevented from falling down when the equipment does not work, the testing device 10 is prevented from being damaged, and the service life of the testing device is effectively prolonged.
The working principle of the invention is as follows:
as shown in fig. 10, which is a schematic diagram of a bending track, when a driving motor 51 of a driving module 50 is started, the eccentric transmission module 40 is driven to move, so as to drive a connecting rod 41 to pull a transmission plate 35 of a bending module 3040 to reciprocate up and down, and when the connecting rod 41 moves up and down, the bending test plate 31 is driven to move down along a vertical slide rail 21, so as to drive two ends of the bending test plate 31 to bend along a folding direction under the action of an inclined slide rail 22, so as to realize bending of a material, and meanwhile, different bending radii need test jigs 32 with different thicknesses, and the bending radii can be accurately ensured under the action of the inclined slide rail 22.
The invention realizes the accurate bending, automatic real-time measurement and resistance value recording of the flexible circuit board by arranging the testing device 10 for testing the bending fatigue resistance of the flexible circuit board and matching with a real-time resistance measurement and recording system, and also has the function of resistance value increase judgment, wherein the testing device 10 can realize the accurate radius bending and can change the bending radius for testing; the invention gets rid of the current situations of complicated and unreliable measurement in the past, and enables the measurement process of the multilayer composite material to be automatic, the test process to be standardized and the result judgment to be intelligent through the automation and standardization of each bending action and the repeatability and reproducibility of each measurement mode, thereby reducing the human error and improving the measurement efficiency.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the present invention. It should be noted that it would be apparent to one of ordinary skill in the art that the present invention may be practiced without departing from its spirit or essential characteristics. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a resistant test equipment that buckles which characterized in that: comprises a testing device; the testing device comprises a base, a bending module arranged on the base and a reciprocating module connected with the bending module; the bending module comprises two bending test plates, test jigs respectively connected with the bending test plates, a first slide block and two second slide blocks; the base comprises a vertical slide rail and inclined slide rails which are respectively arranged on two opposite sides of the vertical slide rail; each bending test plate is respectively pivoted with the first slide block; the first sliding block is connected with the vertical sliding rail in a sliding manner; each second sliding block is respectively pivoted with the corresponding bending test plate; each second sliding block is respectively connected with the corresponding inclined sliding rail in a sliding manner; the reciprocating motion module is connected with the first sliding block to drive the first sliding block to reciprocate, so that the bending test board and the test fixture are driven to perform folding motion or opening motion.
2. The bend resistance test apparatus of claim 1, wherein: the number of the first sliding blocks is two, the first sliding blocks are connected to two ends of the bending test plate respectively, a transmission plate is connected between the first sliding blocks, and the transmission plate is connected with the reciprocating motion module.
3. The bend resistance test apparatus of claim 1, wherein: the height of the inclined slide rail close to one end of the vertical slide rail is smaller than the height of the inclined slide rail far away from one end of the vertical slide rail.
4. The bend resistance test apparatus of claim 1, wherein: the test fixture comprises two fixing plates which are arranged in parallel relatively, and the two fixing plates are detachably mounted above the two bending test plates respectively.
5. The bend resistance test apparatus of claim 1, wherein: two ends of the two bending test boards are respectively connected through a rotating shaft, and the rotating shaft is connected with the vertical slide rail; the bending test plate is also provided with a plurality of contact press blocks which are evenly distributed on two sides of the bending test plate.
6. The bend resistance test apparatus of claim 1, wherein: the testing device also comprises a safety protection piece, wherein the safety protection piece comprises an electric push rod and a protection plate connected with the electric push rod; the backplate is including connecting electric putter's long slab, connect respectively the butt board at long slab both ends, the upper portion of butt board is provided with oblique platform.
7. The bend resistance test apparatus of claim 1, wherein: the reciprocating motion module comprises an eccentric transmission module and a driving module, and the eccentric transmission module is connected with the driving module.
8. The bend resistance test apparatus of claim 7, wherein: the eccentric transmission module comprises a connecting rod, a movable seat eccentrically connected with the connecting rod, a circular plate fixed on the movable seat and connected with the driving module, and a plurality of optical axes slidably connected with the movable seat; and two ends of the optical axis are respectively provided with a limiting seat, and the limiting seats are fixedly arranged on the circular plate.
9. The bend resistance test apparatus of claim 7, wherein: the driving module comprises a driving motor, a transmission belt and a transmission shaft, one end of the transmission belt is connected with the driving motor, the other end of the transmission belt is connected with the transmission shaft, and the transmission shaft is connected with the eccentric transmission module; the transmission shaft is provided with at least two bearings, and the bottom of each bearing is provided with a heightening seat.
10. The bend resistance test apparatus of claim 1, wherein: the resistance tester comprises an outer case, a computer and a multi-channel resistance tester, wherein the computer and the multi-channel resistance tester are arranged in the outer case, and the multi-channel resistance tester is respectively connected with the computer and the testing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010751740.4A CN111693390A (en) | 2020-07-30 | 2020-07-30 | Bending-resistant test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010751740.4A CN111693390A (en) | 2020-07-30 | 2020-07-30 | Bending-resistant test equipment |
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| CN111693390A true CN111693390A (en) | 2020-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217208A (en) * | 2021-12-10 | 2022-03-22 | 余姚舜宇智能光学技术有限公司 | Module testing equipment and testing method thereof |
-
2020
- 2020-07-30 CN CN202010751740.4A patent/CN111693390A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217208A (en) * | 2021-12-10 | 2022-03-22 | 余姚舜宇智能光学技术有限公司 | Module testing equipment and testing method thereof |
| CN114217208B (en) * | 2021-12-10 | 2024-04-19 | 余姚舜宇智能光学技术有限公司 | Module testing device and testing method of module testing device |
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Effective date of registration: 20210903 Address after: 523000 No. 23, Erxiang, Zhenglu, Guancheng County, Dongguan City, Guangdong Province Applicant after: Liang Tiejun Address before: Room 102, building 2, No.2 Expo Avenue, Houjie Town, Dongguan City, Guangdong Province 523000 Applicant before: Dongguan Atomic Industrial Automation Equipment Co.,Ltd. |
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