Welding Metal Sheet Testing Mechanism and Testing Method

Abstract

The present invention provides a welding metal sheet testing mechanism and a testing method. The welding metal sheet testing mechanism includes a lower testing module and an upper testing module. The lower testing module includes a product limiting groove for restricting the product to be tested and a docking plug for connecting the product to be tested and an external testing system. The upper testing module includes a probe module for contacting the welding metal sheet of the product to be tested and a magnet module for adsorbing the solder joint of the welding metal sheet. Through the testing mechanism and testing method of the present invention, the defects of false soldering or open soldering can be effectively intercepted.

Description

Technical Field

[0001] The present invention relates to the field of electrical testing, and particularly to a testing mechanism and method for welded metal sheets. Background Art

[0002] In the current prior art, since a flexible printed circuit board (hereinafter referred to as FPC) needs to be connected to other components, during the manufacturing process of the FPC, single or multiple metal sheets such as nickel sheets or other metal products of different sizes are welded onto the FPC as electrical connection terminals. During the welding process, technologies such as laser welding are mostly used to weld a point of a metal sheet such as a nickel sheet or other metal products, while most of the metal sheet or metal product protrudes outside the FPC to facilitate connection with other components. However, since the FPC is relatively soft, during processes such as turnover or transportation, it may cause the solder joints to crack or become loose. When performing electrical inspection on the FPC, the traditional method is compression testing, that is, the probe directly pierces the metal sheet or metal product to test whether the circuit is conductive. However, this testing method cannot intercept defects such as loose solder joints of the product. Summary of the Invention

[0003] To solve the problems existing in the prior art, the present invention proposes a testing mechanism for welded metal sheets. The testing mechanism for welded metal sheets includes a lower testing module and an upper testing module. The lower testing module includes a product limiting groove for restricting the product to be tested and a docking plug for connecting the product to be tested and an external testing system. The upper testing module includes a probe module for contacting the welded metal sheet of the product to be tested and a magnet module for adsorbing the solder joint of the welded metal sheet.

[0004] Further, the upper testing module further includes a magnet control cylinder.

[0005] Further, the probe module includes a probe, a pre-pressure block, a probe block, and a probe module elastic column.

[0006] Further, the magnet module includes an equal-height screw, a magnet module elastic column, a magnet, a connecting plate, and an insulating plate.

[0007] Further, the testing mechanism for welded metal sheets further includes a lower module mounting plate for detachably mounting the lower testing module.

[0008] Further, the testing mechanism for welded metal sheets may further include an operating platform. The operating platform has a platform, and a slide rail, a slider, and a feed cylinder for feeding the lower module mounting plate into the testing area and withdrawing the lower module mounting plate from the testing area are installed on the platform.

[0009] Further, the welding metal sheet testing mechanism further includes a support frame, and the support frame includes a side support frame and a top support frame supported and fixed by the side support frame at the upper part of the side support frame.

[0010] Further, the welding metal sheet testing mechanism further includes an upper and lower module pressing device, and the upper and lower module pressing device has an alignment device, a pressing cylinder, a limit buffer device, and an upper module mounting plate.

[0011] Further, the welding metal sheet testing mechanism further includes an adapter printed circuit board.

[0012] Further, the docking plug includes a fixed bottom plate, a detected product plug limiting block installed on the fixed bottom plate, a slide rail bottom plate installed on the fixed bottom plate, a docking plug slide rail installed on the slide rail bottom plate, a docking plug slider installed on the docking plug slide rail, a pushing block fixed on the docking plug slider, and a docking plug probe module installed on the pushing block.

[0013] Further, the docking plug probe module includes a probe group for docking with the detected product plug, a probe seat for fixing the probe group, and a probe alignment limiting block fixed on the probe seat for guiding and aligning the probe group and limiting the extension amount of the probe group.

[0014] The present invention also provides a welding metal sheet testing method, which includes connecting the product to be tested with an external testing system; connecting the probe module with the external testing system; bringing the probe module into contact with the welding metal sheet of the product to be tested; bringing the magnet module into contact with the solder joint of the welding metal sheet of the product to be tested; lifting the magnet module upward by a predetermined distance; and performing testing with the external testing system.

[0015] Through the above testing mechanism and testing method, since the magnet module has a magnetic force on metal sheets such as nickel sheets, if there are solder joints or voids in the laser welding part between the metal sheet such as a nickel sheet and the body of the product to be tested, the magnetic suction force will ensure that the solder joint or void part on the metal sheet is separated from the body of the product to be tested. At this time, the loop resistance value of the metal sheet is tested by connecting the probe module to the testing system, and the defects of solder joints or voids can be intuitively reflected in the test value, so that such defects can be effectively intercepted.

[0016] To make the above content of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0018] Figure 1 It is a top view schematic diagram for testing the lower module;

[0019] Figure 2 It is a bottom view schematic diagram for testing the upper module;

[0020] Figure 3 It is a side view schematic diagram for testing the upper module;

[0021] Figure 4 It is an enlarged schematic diagram of the probe module in the upper module for testing;

[0022] Figure 5 It is an enlarged schematic diagram of the magnet module in the upper module for testing;

[0023] Figure 6 It is an overall schematic diagram of a welding metal sheet testing mechanism disclosed by the present invention;

[0024] Figure 7 It is a partial schematic diagram of a welding metal sheet testing mechanism disclosed by the present invention. Detailed implementation manners

[0025] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0026] Now, exemplary implementation manners of the present invention are introduced with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely, and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary implementation manners shown in the accompanying drawings are not limitations on the present invention. In the drawings, the same units / components use the same reference numerals.

[0027] Unless otherwise specified, the terms used herein, including scientific and technical terms, have the ordinary meaning understood by those skilled in the art. Additionally, it can be understood that terms defined in a commonly used dictionary should be understood to have a meaning consistent with the context of their related fields, and should not be understood in an idealized or overly formal sense.

[0028] Figure 1 It is a top view schematic diagram for testing the lower module; Figure 2 It is a bottom view schematic diagram for testing the upper module. As Figure 1 and Figure 2As shown, the welding metal sheet testing mechanism includes a testing lower module 3 and a testing upper module 2, the testing lower module 3 includes a product limiting groove 32 for limiting the tested product and a docking plug 31 for connecting the tested product and an external testing system, the testing upper module 2 includes a probe module 22 for contacting the welding metal sheet of the tested product and a magnet module 23 for adsorbing the welding point of the welding metal sheet.

[0029] The external testing system can adopt an existing testing system such as a precision wire tester that can test parameters such as line resistance. When the product to be tested is directly or indirectly connected to the external testing system through the docking plug 31 and the probe module 22, the probe module 22 contacts the welding metal sheet welded on the product to be tested such as FPC, and the magnet module 23 attracts the soldering point of the soldering metal sheet. If there is a cold solder joint or a hollow solder joint at the soldering point, the cold solder joint or the hollow solder joint will remain disconnected from the circuit under the action of magnetic attraction. The external testing system can determine the existence of defects such as cold solder joints or hollow solder joints through the tested line resistance value.

[0030] <Test the module>

[0031] Figure 1 This is a top view of the test module. Figure 1 As shown, the test lower module 3 includes a docking plug 31 and a product limiting groove 32 , and may also include a test lower module base plate 33 and a positioning hole 34 .

[0032] The product limiting groove 32 is adapted to the shape and structure of the tested product such as FPC, and is arranged on the test lower module substrate 33 to limit the position of the tested product. When the tested product is limited in the product limiting groove 32, it can ensure that the probe module 22 can accurately contact the metal sheet such as nickel sheet welded on the tested product, and it can ensure that the magnet module 23 can contact the welding point of the metal sheet such as Ni sheet on the tested product.

[0033] The docking plug 31 is installed on the test lower module substrate 33, located on one side of the product limit groove 32, and is used to connect the tested product. The docking plug 31 is connected to the plug of the tested product, and the docking plug 31 is directly connected to an external test system (such as a precision wire tester) or other external equipment through a transfer printed circuit board 12 described later.

[0034] The docking plug 31 can be directly connected to the adapter printed circuit board 12, or can be connected to the adapter printed circuit board 12 through an intermediate adapter printed circuit board. For example, an intermediate adapter printed circuit board A can be provided on the test lower module substrate 33, and an intermediate adapter printed circuit board B can be provided at a corresponding position on the test upper module 2. The intermediate adapter printed circuit board B is then directly connected to a test system provided externally or through the adapter printed circuit board 12. When the test upper module 2 and the test lower module 3 are closed, the intermediate adapter printed circuit board A and the intermediate adapter printed circuit board B are plugged and connected, thereby connecting the docking plug 31 to the external test system.

[0035] A plurality of positioning holes 34 are also provided on the test lower module substrate 33 for cooperating with the positioning pins 27 on the test upper module 2 to determine the relative positions of the test lower module 3 and the test upper module 2 during testing, and to prevent misalignment between the test upper module 2 and the test lower module 3 when they are closed.

[0036] <Test upper module>

[0037] Figure 2 Is a bottom schematic diagram of a test upper module; Figure 3 Is a side schematic diagram of a test upper module; Figure 4 Is an enlarged schematic diagram of the probe module in the test upper module; Figure 5 Is an enlarged schematic diagram of the magnet module in the test upper module.

[0038] As Figure 2 And Figure 3 As shown in, the test upper module 2 includes a probe module 22 for contacting the welding metal sheet of the product to be tested and a magnet module 23 for adsorbing the solder joint of the welding metal sheet. The test upper module 2 may further include a magnet control cylinder 21, an upper mounting plate 24, a lower mounting plate 25, support columns 26, positioning pins 27, and a probe cable adapter board 28.

[0039] The upper mounting plate 24 and the lower mounting plate 25 are connected by a plurality of support columns 26. On the lower mounting plate 25, components such as the probe module 22, the magnet module 23, the positioning pins 27, and the probe cable adapter board 28 are assembled.

[0040] As Figure 4 As shown in, the probe module 22 is used as a contact end and abuts against a metal sheet such as a nickel sheet welded on the product to be measured to test whether the circuit in the product to be tested is conducting. The probe module 22 is connected to an external test system. The probe module 22 includes probes 221, a preloading block 222, a probe block 223, and probe module elastic columns 224.

[0041] The probe 221 includes a probe needle head 2211 and a probe needle sleeve 2212, and the probe needle sleeve 2212 is fixed in the probe block 223. The probe block 223 is used to guide and fix the probe needle sleeve 2212. The pre-pressure block 222 is locked on the probe block 223 through the probe module elastic column 224, and the probe 221 passes through the pre-pressure block 222 to contact the product to be tested. During the test, the upper test module 2 is driven downward to close the mold with the lower test module 3. The pre-pressure block 222 first contacts the product to be tested. After being pressed tightly, the pre-pressure block 222 is forced to contract upward along with the probe module elastic column 224, and the probe needle head 2211 contacts a metal sheet such as a nickel sheet of the product to be tested. The pre-pressure block 222 functions to guide the probe 221 and press and flatten the product to be tested. Also, since the probe 221 close to the product to be detected is arranged inside the pre-pressure block 222, the pre-pressure block 222 can also play a role in protecting the probe 221.

[0042] Since there are multiple probe modules 22 in the welding metal sheet test mechanism, and each probe module 22 is provided with a test circuit, after the probe cable adapter board 28 is connected to all the test circuits of the probe module 22, it is converted into a row of cables, and then connected to the subsequent adapter printed circuit board 12 through the cable or directly connected to an external test system or test instrument. In this way, it is convenient for the wire repair and replacement of the probe module 22, and it is also convenient for the welding metal sheet test mechanism to be compatible with multiple product tests. That is, when changing the test product, only the upper test module 2 and the lower test module 3 need to be replaced, and there is no need to carry out cumbersome wiring work anymore. Through the cable adapter method, the operation of the welding metal sheet test mechanism is made more convenient.

[0043] The adapter printed circuit board 12 connected to the probe cable adapter board 28 is preferably a separately provided adapter printed circuit board 12, that is, it is distinguished from the adapter printed circuit board 12 connected to the docking plug 31. Of course, according to the design requirements, it can also be integrated with multiple adapter printed circuit boards 12 into one adapter printed circuit board 12.

[0044] The magnet module 23 is used to contact the solder joint of a metal sheet such as a Ni sheet on the product to be tested and adsorb the solder joint during the test. The magnet module 23 includes an equal-height screw 231, a magnet module elastic column 232, a magnet 233, a connecting plate 234, and an insulating plate 235.

[0045] The magnet control cylinder 21 is installed on the upper mounting plate 24, and its movable end is connected to the connecting plate 234 of the magnet module 23 for controlling the lifting of the magnet module 23. The connecting plate 234 is connected to an insulating plate 235 such as a glass fiber board through an equal-height screw 231, and a magnet module elastic column 232 is installed between the connecting plate 234 and the insulating plate 235. The magnet 233 is fixed on the insulating plate 235, preferably fixed at the bottom of the insulating plate 235.

[0046] When the magnet control cylinder 21 controls the movement of the magnet module 23, the connecting plate 234 plays an excessive role. The equal-height screw 231 is used for fixing and guiding the insulating plate 235. The magnet module elastic column 232 plays a buffering role, and the insulating plate 235 plays an insulating role, so that the magnet 233 is insulated from other metal structures on the welding metal sheet testing mechanism.

[0047] The test upper module 2 is designed to be detachably assembled to the upper module mounting plate 15, facilitating quick disassembly, assembly, and replacement of the test upper module 2 to meet the test requirements of different products. Preferably, a clamping mechanism (not shown) is provided on the upper mounting plate 24 of the test upper module 2. Through the clamping mechanism, the upper mounting plate 24 can be quickly assembled to the upper module mounting plate 15 and can be quickly disassembled and replaced.

[0048] <Lower module mounting plate>

[0049] Figure 6 It is an overall schematic diagram of a welding metal sheet testing mechanism disclosed by the present invention; Figure 7 It is a partial schematic diagram of a welding metal sheet testing mechanism disclosed by the present invention.

[0050] As Figure 6 and Figure 7 shown, the welding metal sheet testing mechanism according to the present invention may further include a lower module mounting plate 44 for detachably mounting the test lower module 3. The test lower module 3 is designed to be detachably assembled to the lower module mounting plate 44, facilitating quick disassembly, assembly, and replacement of the test lower module 3 to meet the test requirements of different products. Preferably, a clamping mechanism (not shown) is provided on the test lower module substrate 33 of the test lower module 3. Through the clamping mechanism, the test lower module substrate 33 can be quickly assembled to the lower module mounting plate 44 and can be quickly disassembled and replaced.

[0051] <Operation platform>

[0052] Figure 6 and Figure 7 shown, the welding metal sheet testing mechanism according to the present invention may further include an operation platform 4. The operation platform 4 has a platform 40, and a slide rail 45, a slider 46, and a feed cylinder 41 for feeding the lower module mounting plate 44 into the test area and withdrawing the lower module mounting plate 44 from the test area can be installed on the platform 40.

[0053] Specifically, slide rails 43, preferably a pair of slide rails 45, are provided on the platform 40. On the slide rails 45, sliders 46 are provided in a matching manner. The lower module mounting plate 44 is supported and fixed by the sliders 46. The test lower module 3 is detachably assembled to the lower module mounting plate 44 and is supported and fixed by the lower module mounting plate 44. The lower module mounting plate 44 enables the test lower module 3 to be quickly disassembled and replaced.

[0054] The slide rail 45 and the slider 46 are used for guiding the lower module mounting plate 44 when it enters and exits the test area, that is, to limit the test lower module 3 mounted on the lower module mounting plate 44 to enter or exit the test area along a preset movement route.

[0055] The fixed end of the feeding cylinder 41 is mounted on the platform 40, and the movable end is fixed on the lower module mounting plate 44, preferably fixed at the bottom of the lower module mounting plate 44. Thus, the movement of the lower module mounting plate 44 along the slide rail 45 is controlled by the feeding cylinder 41 to control the entry and exit actions and positions of the test lower module 3.

[0056] A start button 4 can also be mounted on the platform 40. The start button 42 is arranged on the operation platform 4 and is used to trigger the start of the welding metal sheet testing mechanism. The start button 42 is preferably a two-handed start button 42, and the two-handed start button 42 includes two buttons corresponding to the left and right hands respectively. When starting the machine, the two-handed start button 42 needs to be pressed simultaneously by the left and right hands corresponding to the start buttons to start the welding metal sheet testing mechanism, so as to avoid potential safety hazards when workers operate the machine while starting the button, fundamentally prevent such accidents from occurring, and thus greatly improve the safety factor of the operation of the welding metal sheet testing mechanism.

[0057] A test result indicator light 43 can also be mounted on the platform 40 and is used to display the test result. When the welding metal sheet testing mechanism detects defects such as cracking or poor soldering in the product under test during the test, the corresponding indicator light will light up to display the test result.

[0058] <Supporting frame>

[0059] As Figure 6 and Figure 7 shown, the welding metal sheet testing mechanism according to the present invention further includes a supporting frame 5. The supporting frame 5 includes side supporting frames 51 and a top supporting frame 52 supported and fixed on the upper part of the side supporting frames 51 by the side supporting frames 51. The side supporting frames 51 are preferably composed of a left side supporting frame 51 and a right side supporting frame 51 arranged oppositely, and the area between the left side supporting frame 51 and the right side supporting frame 51 is set as the test area.

[0060] <Upper and lower module pressing device>

[0061] As Figure 6 and 7 shown, the welding metal sheet testing mechanism according to the present invention further includes an upper and lower module pressing device 1. The upper and lower module pressing device 1 has a guiding device 11, a pressing cylinder 13, a limiting and buffering device 14, and an upper module mounting plate 15.

[0062] Specifically, the pressing cylinder 13 is installed on the top support frame 52, and its movable end passes through the top support frame 52 and is fixedly assembled with the upper module mounting plate 15. The test upper module 2 is detachably installed on the upper module mounting plate 15. The pressing cylinder 13 controls the up and down position of the upper module mounting plate 15, thereby controlling the movement and position of the test upper module 2 entering or exiting the test area.

[0063] A plurality of alignment devices 11 are provided, which can be 4, 6 or 8. The alignment device 11 includes an alignment sleeve 111 and an alignment shaft 112. The alignment sleeve 111 passes through the top support frame 52 and is fixed on the top support frame 52. One end of the alignment shaft 112 passes through the alignment sleeve 111 and is fixed on the upper module mounting plate 15. The alignment sleeve 111 defines the movement direction of the alignment shaft 112, so that the alignment shaft 112 moves along the axial direction of the alignment sleeve 111, thereby aligning the movement direction of the pressing cylinder 13, so that the upper module mounting plate 15 and the test upper module 2 enter or exit the test area along a predetermined movement direction.

[0064] The alignment devices 11 are preferably arranged in pairs, and a limit buffer device 14 can be provided at the top of one or more pairs of alignment devices 11. The limit buffer device 14 is connected to the other end of the alignment shaft 112 and is used to buffer the movement of the upper module mounting plate 15 and the test upper module 2 along the predetermined movement direction. In this embodiment, the predetermined movement direction is the axial direction of the alignment sleeve 111. The limit buffer device 14 can also be provided only at the other end of a single alignment shaft 112. At this time, the maximum distance between any two points on the outer peripheral wall of the limit buffer device 14 needs to be greater than the maximum inner diameter of the alignment sleeve 111.

[0065] When the test upper module 2 and the test lower module 3 are closed for testing, the alignment shaft 112 descends following the action of the pressing cylinder 13. According to the test requirements, the position where the pressing cylinder 13 needs to descend can be preset. A position sensor (not shown) can be provided on the pressing cylinder 13. When the position sensor emits that the descending position of the pressing cylinder 13 reaches the preset position, the control system (not shown) of the welding metal sheet test mechanism will automatically stop the descending action of the pressing cylinder 13. At this time, the limit buffer device 14 may limit the further descending action of the pressing cylinder 13 by abutting against the top support frame 52, thereby avoiding mechanical collision between the test upper module 2 and the test lower module 3 caused by misoperation, and also avoiding limiting and protecting the upper and lower module pressing device 1 when the position sensor is abnormal.

[0066] The upper module mounting plate 15 is movably mounted below the top support frame 52 through the alignment device 11 and the pressing cylinder 13. Preferably, the test upper module 2 is detachably mounted on the bottom of the upper module mounting plate 15, so that the test upper module 2 can be quickly disassembled and replaced.

[0067] <Transfer printed circuit board>

[0068] Such as Figure 6 And 7 As shown, the welding metal sheet testing mechanism may further include a transfer printed circuit board (transfer PCB device) 12.

[0069] The transfer printed circuit board 12 is preferably mounted on the top support frame 52 and serves as a transfer position for communication lines and ribbon cables in the welding metal sheet testing mechanism. The transfer printed circuit board 12 may be provided as one or more, and the number of settings may be determined according to the number of test points. The transfer printed circuit board 12 can be used to connect communication lines and ribbon cables led out by devices such as the docking plug 31 and the probe module 22 in the welding metal sheet testing mechanism, and on the other side, the connected communication lines and ribbon cables are transferred to an external test instrument (not shown) or a control device (not shown). Through the transfer printed circuit board 12, the welding metal sheet testing mechanism can be electrically connected to an external test instrument or a control device.

[0070] <Testing principle>

[0071] The present invention preferably adopts a four-wire testing principle. That is, two probes 221 are abutted against a metal sheet such as a nickel sheet of the product to be tested, and each probe 221 is connected to a separate test line. The test lines connected to all the probes 221 are transferred into a ribbon cable through the probe ribbon cable transfer board 28. The other end of this ribbon cable is connected to one side of the transfer printed circuit board 12, and the other side of the transfer printed circuit board 12 is connected to an external test system or a test instrument through a ribbon cable, thus forming a loop for the probes 221. In addition, the plug of the product to be tested is connected to the docking plug 31, and the docking plug 31 is directly or through the transfer printed circuit board 12 connected to an external device such as an external test system (such as a precision wire tester), thus forming a loop for the plug of the product to be tested. Through the external test system, data is collected, and it is determined whether the line resistance value is within the range of the specified value. If the measured value of the product to be tested is within the range of the specified value, it is determined to be qualified; otherwise, it is determined to be unqualified.

[0072] <Testing method>

[0073] The welding metal sheet testing method according to the present invention includes: connecting the product to be tested to an external test system; connecting the probe module 22 to the external test system; bringing the probe module 22 into contact with the welding metal sheet of the product to be tested; bringing the magnet module 23 into contact with the solder joint of the welding metal sheet of the product to be tested; lifting the magnet module 23 upward by a predetermined distance; and performing a test with the external test system.

[0074] Specifically, it includes:

[0075] 1. Assemble a test upper module 2 and a test lower module 3 adapted to the product to be tested on the upper module mounting plate 15 and the lower module mounting plate 44 respectively;

[0076] 2. Load the product to be tested into the product limiting groove 32 in the test lower module 3 and connect it to the docking plug 31;

[0077] 3. Feed the test lower module 3 into the test position in the test area by controlling the feed cylinder 41;

[0078] 4. Press the start button 42 to start the test;

[0079] 5. The pressing cylinder 13 controls the test upper module 2 to move downward and close the mold with the test lower module 3. The probe 221 of the probe module 22 and the magnet 233 of the magnet module 23 are pressed downward together. The probe 221 of the probe module 22 contacts the metal sheet such as a nickel sheet of the welded product to be tested, and the magnet 233 of the magnet module 23 contacts the solder joint of the metal sheet such as a Ni sheet on the product to be tested;

[0080] 6. The magnet control cylinder 21 controls the magnet to rise a certain distance, such as 1.5 mm - 3 mm, preferably 2 mm, to generate a certain magnetic suction force;

[0081] 7. The external test system connected to the welded metal sheet test mechanism starts the test and displays the test results through the display interface of the test system and the test result indicator light 43.

[0082] Through the above method, due to the magnetic force of the magnet module on the metal sheet such as a nickel sheet, if there are virtual solders or void solders at the laser welding part between the metal sheet such as a nickel sheet and the product body to be tested, the magnetic suction force will ensure that the virtual soldered or void soldered part on the metal sheet is separated from the product body. At this time, the loop resistance value of the metal sheet is tested through the probe module connected to the test system, and the defects of virtual soldering or void soldering can be intuitively reflected in the test value, so that such defects can be effectively intercepted.

[0083] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A welding metal sheet testing mechanism, It is characterized in that The welding metal sheet testing mechanism includes a testing lower module and a testing upper module. The testing lower module includes a product limiting groove for limiting the tested product and a docking plug for connecting the tested product and an external testing system. The testing upper module includes a probe module for contacting the welding metal sheet of the tested product and a magnet module for adsorbing the welding points of the welding metal sheet.

2. The welded metal sheet testing device according to claim 1, It is characterized in that The test upper die set also includes a magnet-controlled cylinder.

3. The welded metal sheet testing device according to claim 1, It is characterized in that The probe module comprises a probe, a pre-pressing block, a probe block and a probe module elastic column.

4. The welded metal sheet testing device according to claim 1, It is characterized in that The magnet module comprises equal height screws, magnet module elastic columns, magnets, connecting plates and insulating plates.

5. The welded metal sheet testing device according to claim 1, It is characterized in that The welded metal sheet testing mechanism also includes a lower die assembly mounting plate for detachably mounting and testing the lower die assembly.

6. The welded metal sheet testing device according to claim 5, It is characterized in that The welded metal sheet testing mechanism can also have an operating platform, which has a platform on which are installed slide rails, sliders and feed cylinders for sending the lower die assembly mounting plate into the testing area and withdrawing the lower die assembly mounting plate from the testing area.

7. The welded metal sheet testing mechanism according to claim 1, It is characterized in that The welded metal sheet testing mechanism further comprises a supporting frame, wherein the supporting frame comprises a side supporting frame and a top supporting frame supported by the side supporting frame and fixed on the upper portion of the side supporting frame.

8. The welded metal sheet testing device according to claim 1, It is characterized in that The welding metal sheet testing mechanism also includes an upper and lower die pressing device, which includes a guiding device, a pressing cylinder, a limit buffer device and an upper die mounting plate.

9. The welded metal sheet testing device according to claim 1, It is characterized in that The welding metal sheet testing mechanism also includes a transfer printed circuit board.

10. A method for testing welded metal sheets, It is characterized in that The welding metal sheet testing method comprises: Connect the product under test to the external test system; Connect the probe module to the external test system; Place the probe module in contact with the welded metal sheet of the product being tested; The magnet module is brought into contact with the welding point of the welded metal sheet of the product under test; lifting the magnet module upward by a predetermined distance; and External test system for testing.

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