CN115840100A

CN115840100A - Conduction test system

Info

Publication number: CN115840100A
Application number: CN202211655874.1A
Authority: CN
Inventors: 倪佳斌
Original assignee: Suzhou HYC Technology Co Ltd
Current assignee: Suzhou HYC Technology Co Ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-03-24

Abstract

The invention relates to a conduction test system which comprises a transmission module, and a shaping platform, a carrying mechanism and an electric testing platform which are sequentially arranged on the transmission module along a transmission direction. The shaping platform is used for fixing the part to be measured of the product to be measured and the product main body mutually and shaping the part to be measured, so that the shape of the part to be measured can be shaped to be within a theoretical range; the electric measuring platform is provided with an electric measuring cavity with variable size in a pressing direction, the carrying mechanism is used for transferring a product to be measured from the shaping platform to the electric measuring platform, and the relative position of the part to be measured and the product main body is maintained in the transferring process, so that the shape of the part to be measured and the relative position of the part to be measured and the product main body can be kept unchanged all the time, the part to be measured can be accurately pressed into the electric measuring cavity of the electric measuring platform, the compression joint conduction of the part to be measured is ensured, and the measuring precision is effectively improved. And the whole process flow can be automatically completed, so that the labor cost is reduced, and the testing efficiency is greatly improved.

Description

Conduction test system

Technical Field

The invention relates to the technical field of electronic product testing, in particular to a conduction testing system.

Background

With the development of science and technology, electronic products are continuously updated in an iterative manner, the manufacturing process is more complex, the structural design tends to be precise, and the functions are more comprehensive. In view of this, ensuring the performance and quality of electronic products is a crucial link in the production process of electronic products. Generally, before an electronic product leaves a factory, each performance parameter of the electronic product needs to be tested, generally, a connector of a product to be tested is accurately pressed into an electrical testing cavity special for detection, so that the connector is conducted with testing equipment, a signal to be tested is output through the testing equipment to conduct testing, and therefore information fed back by the product to be tested can be received, and whether a bad part exists in the product to be tested or not can be confirmed.

However, the connector is generally flexible, so the connector is easily bent many times in the transmission process, the shape of the supplied material of the connector is extremely irregular, the connector may have large deformation even before being tested, and the product to be tested is transferred without shaping the connector, and if the relative position of the product main body and the connector cannot be effectively fixed, there will be relative displacement change between the connector and the product main body, and the above factors all cause that the connector cannot be accurately pressed into the testing cavity, thereby affecting the crimping conduction and the testing efficiency. Meanwhile, the feeding and discharging operation, the shaping operation and the conduction test operation need to be completed on different platforms, and if the feeding and discharging operation, the shaping operation and the conduction test operation cannot be well connected, the conduction test efficiency is low.

Disclosure of Invention

Therefore, it is necessary to provide a conduction test system with high automation degree and higher test precision to solve the problems of low test precision and low test efficiency caused by low automation degree of the existing conduction test system.

According to an aspect of the present application, there is provided a conduction test system including: the device comprises a transmission module, and a shaping platform, a carrying mechanism and an electric measuring platform which are sequentially arranged on the transmission module along a transmission direction;

the shaping platform is used for fixing a part to be measured of a product to be measured and a product main body of the product to be measured mutually and shaping the part to be measured;

the electric measurement platform is provided with an electric measurement cavity with a size variable in a pressing direction, and the electric measurement platform is used for fixing the part to be measured in the electric measurement cavity so as to carry out conduction test on the part to be measured;

the carrying mechanism is used for transferring the product to be tested from the shaping platform to the electrical testing platform and maintaining the relative position of the part to be tested and the product main body in the transferring process so that the part to be tested can be pressed into the electrical testing cavity.

In one embodiment, the conduction testing system is provided with a shaping station, a photographing station and an electrical testing station which are sequentially arranged at intervals along the transmission direction, wherein the photographing station is provided with a photographing camera which is used for photographing and positioning the position of the product to be tested relative to the electrical testing platform, so that the carrying mechanism can accurately press the part to be tested into the electrical testing cavity.

In one embodiment, the transmission module comprises a first straight line module, a second straight line module and a third straight line module which are sequentially arranged at intervals along the transmission direction, the shaping platform is movably arranged on the first straight line module to move to and fro between the shaping station and the photographing station, the carrying mechanism is movably matched and connected on the second straight line module to move to and fro between the photographing station and the electrical measurement station, and the electrical measurement platform is movably arranged on the third straight line module to adjust the relative position of the electrical measurement platform and the product to be measured when the carrying mechanism transfers the product to be measured to the electrical measurement station.

In one embodiment, the transport module further includes a lifting linear module movably mounted on the second linear module and capable of moving relative to the second linear module along the transport direction, and the carrying mechanism is movably mounted on the lifting linear module so as to be connected to the second linear module through the lifting linear module and capable of moving up and down controllably relative to the lifting linear module.

In one embodiment, the shaping platform comprises a first support plate and a shaping mechanism, the shaping mechanism is arranged on the first support plate, the first support plate is used for bearing the product main body, the shaping mechanism is provided with a pressure head assembly and at least two pushing head assemblies, each pushing head assembly is provided with a first sliding surface, the pressure head assembly is provided with at least two second sliding surfaces which are parallel to the corresponding first sliding surface and are oppositely arranged in a horizontal direction, and the distance between the two second sliding surfaces is gradually increased in the top-bottom direction;

the at least two push head assemblies can be controlled to mutually approach or move away from each other along the horizontal direction, so that the first sliding surface is attached to the second sliding surface and moves relative to the second sliding surface to clamp or release the part to be measured of the product to be measured, and the push head assemblies are driven to move up and down to shape the part to be measured of the product to be measured.

In one embodiment, each of the pusher assemblies comprises a pusher and a first wedge-shaped block which are connected with each other, the pressure head assembly comprises a pressing block and a second wedge-shaped block which are connected with each other, the first wedge-shaped block is matched with the pressing block through the second wedge-shaped block, the first sliding surface is arranged on the first wedge-shaped block, and the second sliding surface is arranged on the second wedge-shaped block;

the shaping mechanism further comprises a supporting seat, an installation position is arranged on the supporting seat, the push head and the pressing block are partially arranged in the installation position, the push head is provided with a clamping part used for clamping the part to be measured, the clamping part is exposed out of the installation position, the side wall of the supporting seat is further provided with a through hole communicated with the installation position, the pressing block is partially exposed out of the through hole and is oppositely arranged, the two push heads are arranged, the clamping part is horizontally positioned on the two opposite sides of the pressing head, and the clamping part, the pressing block, the first supporting plate and the supporting seat are jointly positioned in the supporting seat in a shaping gap used for accommodating the part to be measured.

In one embodiment, the handling mechanism comprises:

the bracket is movably connected with the transmission module;

the clamping jaw assembly is matched and connected with the bracket and provided with at least two oppositely arranged clamping jaws, and the two oppositely arranged clamping jaws can be controlled to mutually approach to clamp the part to be measured;

and the adsorption component is movably arranged on the support and can be controlled to move up and down relatively to the clamping jaw component, so that the clamping jaw component can clamp the part to be detected and adsorb the product main body in front of the part to be detected.

In one embodiment, the handling mechanism further comprises a rotating assembly, the clamping jaw assembly is coupled to the bracket through the rotating assembly, and the rotating assembly can drive the clamping jaw assembly to rotate around an axis perpendicular to the conveying direction.

In one embodiment, the electrical measurement platform comprises:

the base is movably arranged on the transmission module;

the second supporting plate is movably arranged on the base and can be controlled to move up and down relative to the base, and the second supporting plate is used for bearing the product main body;

mechanism is surveyed to electricity, including fixed block, briquetting and final pressure piece in advance, the fixed block is fixed to be set up on the base, pre-compaction piece movably connect in the fixed block, and can be relative the fixed block is followed press direction reciprocating motion, a lateral surface of briquetting with a lateral surface of fixed block sets up relatively and forms jointly the die cavity is surveyed to electricity, final pressure piece movably sets up in the second backup pad, and can be relative the second backup pad is followed press direction reciprocating motion.

In one embodiment, the electrical measuring mechanism further comprises a trajectory guide block movably coupled to the pre-pressing block and having a guide surface, the pre-pressing block being further controllably movable up and down relative to the fixed block and the trajectory guide block such that the guide surface can guide the pre-pressing block to move back and forth in the pressing direction while moving up and down.

In one embodiment, the pre-pressing block is provided with a sliding body which is movably connected with the guide surface, the guide surface comprises a first guide surface, a second guide surface and a third guide surface which are connected in sequence, and the distance between the third guide surface and the extension surface of the pre-pressing block on the side surface close to the fixed block in the pressing direction is larger than the distance between the first guide surface and the extension surface of the pre-pressing block on the side surface close to the fixed block;

when the prepressing block moves up and down relative to the track guide block, the sliding body can be driven to move on the guide surface so as to drive the prepressing block to move along the pressing direction at the same time.

In one embodiment, the pre-pressing block has a pre-pressing pin for supporting the portion to be measured, the final pressing block has an avoiding groove, and when the final pressing block is close to the electrical measurement cavity and supported on the portion to be measured, the pre-pressing pin is used for supporting the portion to be measured to be accommodated in the avoiding groove.

The conduction test system has the following technical effects:

the shaping platform is arranged in the conduction test system and is arranged at the upstream of the electrical measurement platform, so that a part to be tested (such as a connector of an electronic product) of a product to be tested is shaped on the shaping platform before being conveyed to the electrical measurement platform for conducting test, the shape of the part to be tested of the product to be tested can be shaped to be within a theoretical range, and in the process that a product main body and the part to be tested of the product to be tested are conveyed to the electrical measurement platform, the relative position of the part to be tested and the product main body is maintained by the conveying mechanism, so that when the product to be tested is conveyed to the electrical measurement platform for conducting test, the shape of the part to be tested can still be maintained in a shaped state, and the relative position of the part to be tested and the product main body can be always kept fixed, so that the part to be tested can be accurately pressed into an electrical measurement pressing connection type cavity of the electrical measurement platform, the pressing precision is improved, the conduction of the part to be tested is ensured, and the test precision is effectively ensured. And the conduction test system is a full-automatic assembly line, so that the technological processes of shaping, transferring and conduction testing can be automatically completed, and the process beats are optimized in place, so that the automation degree is high, the labor cost is reduced, and the test efficiency is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other embodiments can be obtained from the drawings without creative efforts.

Fig. 1 is a top view of a conduction testing system according to an embodiment of the present invention;

FIG. 2 is an isometric view of a conduction testing system provided by an embodiment of the present invention;

FIG. 3 is an isometric view of a shaping platform provided by an embodiment of the present invention;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is a cross-sectional view of a fairing mechanism provided in an embodiment of the invention;

FIG. 6 is an isometric view of a handling mechanism provided by an embodiment of the present invention;

FIG. 7 is an enlarged view of area B of FIG. 6;

FIG. 8 is an isometric view of an electrical measurement platform provided by an embodiment of the present invention;

FIG. 9 is an isometric view of a portion of the structure in an electrical measuring mechanism provided by an embodiment of the present invention;

FIG. 10 is an enlarged view of area C of FIG. 9;

FIG. 11 is an isometric view of another portion of the structure of the electrical measuring mechanism provided by an embodiment of the present invention;

fig. 12 is an enlarged view of region D in fig. 8.

Description of reference numerals:

10. conducting a test system; 11. a shaping station; 12. a photographing station; 13. an electrical measurement station; 100. a transmission module; 110. a first linear module; 120. a second linear module; 130. a third linear module; 140. a lifting linear module; 200. a shaping platform; 210. a first support plate; 211. a suction cup; 212. fixing the column; 220. a shaping mechanism; 221. a supporting seat; 2211. mounting positions; 2212. a through hole; 222. a ram assembly; 2221. briquetting; 2222. a second wedge block; 2222a, a second slip plane; 2223. shaping the gap; 223. a first drive element; 224. a pusher assembly; 2241. pushing the head; 2241a, a clamping part; 2242. a first wedge block; 2242a; a first slip plane; 225. a first linear guide rail assembly; 2251. a first guide block; 2252. a first guide rail; 226. a first elastic member; 300. a carrying mechanism; 310. a support; 320. a second drive element; 330. an adsorption component; 331. a hanger; 332. sucking a plate; 340. a jaw assembly; 341. a clamping jaw; 342. pushing a block; 350. a rotating assembly; 400. an electrical measurement platform; 401. electrically measuring the cavity; 410. a base; 420. a second support plate; 430. a guide post; 440. a third drive element; 450. an electrical measuring mechanism; 451. a fixed block; 452. pre-briquetting; 4521. pre-pressing the needle; 453. a slider; 454. final briquetting; 4541. an avoidance groove; 455. a fourth drive element; 456. a trajectory guide block; 4561. a guide surface; 4561a, a first guide surface; 4561b, a second guide surface; 4561c, third guide surface; 457. a sliding body; 458. a second elastic member; 459. a fifth drive element; 460. a second linear guide assembly; 461. a second guide block; 462. a second guide rail; 500. and a photographing camera.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships illustrated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Further, the first feature "on," "over" and "above" the second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser level than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "up," "down," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

An embodiment of the present invention provides a conduction test system, which is used to press a portion to be tested of a product to be tested into a dedicated electrical testing cavity for testing, so as to perform conduction test on the product to be tested, thereby enabling the product to be tested to detect whether the product to be tested is defective before leaving a factory, and is also used to shape a plug-in before the portion to be tested performs the conduction test, so as to eliminate irregular deformation, thereby enabling the portion to be tested to be accurately pressed into the electrical testing cavity for the conduction test, and improving the test accuracy and the test efficiency.

The following describes a structure of the conduction test system in the present application, taking an electronic product as a product to be tested and taking a connector of the electronic product as a part to be tested as an example. The present embodiment is described as an example, and the technical scope of the present application is not limited thereto. It is understood that, in other embodiments, the conduction test system of the present application may be used to conduct a conduction test on a portion to be tested of any electronic product, and is not limited herein.

The following describes a preferred embodiment of the conduction testing system provided in the present application with reference to fig. 1 to 12.

As shown in fig. 1 and fig. 2, a conduction test system 10 for conducting a conduction test on an electronic product before shipping from a factory is provided, where the conduction test system 10 includes a transmission module 100, and a shaping platform 200, a handling mechanism 300, and an electrical testing platform 400, which are sequentially disposed on the transmission module 100 along a transmission direction (a direction indicated by an arrow in fig. 1). The shaping platform 200 is used for fixing a part to be tested (in this embodiment, the part to be tested is a connector of an electronic product, and hereinafter referred to as a connector) of a product to be tested and a product main body of the product to be tested to each other, and is used for shaping the connector; referring to fig. 8, the electrical testing platform 400 has an electrical testing cavity 401 with variable dimensions, and the handling mechanism 300 is used to transfer the product to be tested from the shaping platform 200 to the electrical testing platform 400 and maintain the relative position of the connector and the product body during the transfer process, so that the connector can be pressed into the electrical testing cavity 401; the electrical testing platform 400 is used to secure and position the socket connector within the electrical testing cavity 401 such that the socket connector can fully contact conductive portions (not shown), such as blade pins, disposed on the sidewalls of the electrical testing cavity to enable a continuity test to be performed on the socket connector.

Preferably, the conduction testing system 10 further includes a photographing camera 500, and the conduction testing system 10 has a shaping station 11, a photographing station 12 and an electrical testing station 13 sequentially arranged at intervals along the transmission direction, the photographing camera 500 is arranged at the photographing station 12, the transmission module 100 can transfer the shaping platform 200 carrying the product to be tested from the shaping station 11 to the photographing station 12 to be photographed by the photographing camera 500 after the connector of the product to be tested is shaped by the shaping platform 200, so as to obtain the relative position (i.e. XY coordinate adjustment parameters) between the product to be tested and the electrical testing platform 400, then transfer the product to be tested from the shaping platform 200 to the carrying mechanism 300 by the carrying mechanism 300, transfer the product to be tested from the photographing station 12 to the electrical testing station 13, and finally transfer the product to be tested to the upper side of the electrical testing platform 400, and drive the third linear module 130 to adjust the position of the electrical testing platform 400 on the third linear module 130 according to the XY coordinate adjustment parameters obtained by the photographing camera 500, so that the carrying mechanism 300 can be accurately pressed into the electrical testing cavity 401 of the electrical testing platform 400.

In some embodiments, the transmission module 100 includes a first linear module 110, a second linear module 120, and a third linear module 130, which are sequentially disposed at intervals along the transmission direction, wherein the first linear module 110 extends from the shaping station 11 to the photographing station 12, the second linear module 120 extends from the photographing station 12 to the electrical measurement station 13, and the third linear module 130 extends from the electrical measurement station 13 to the outlet of the conduction testing system 10. The shaping platform 200 is movably mounted on the first linear module 110 and can controllably reciprocate to and from the shaping station 11 and the photographing station 12 along the extending direction of the first linear module 110; the carrying mechanism 300 is movably coupled to the second linear module 120 and can be controlled to move back and forth between the photographing station 12 and the electrical testing station 13 along the extending direction of the second linear module 120, and the electrical testing platform 400 is movably mounted on the third linear module 130 and can be controlled to move back and forth between the electrical testing station 13 and the outlet of the conduction testing system 10 along the extending direction of the third linear module 130, so that the relative position between the electrical testing platform 400 and the product to be tested can be adjusted when the carrying mechanism 300 transfers the product to be tested to the electrical testing station 13, so that the carrying mechanism 300 can accurately press the connector into the electrical testing cavity 401 of the electrical testing platform 400, and the electrical testing platform 400 carrying the product to be tested can also transfer the electrical testing platform 400 of the product to be tested from the electrical testing station 13 to the outlet of the conduction testing system 10 after the conduction testing is completed. The extending direction of the first linear module 110, the extending direction of the second linear module 120, and the extending direction of the third linear module 130 together form a transmission direction of the conduction testing system 10.

In a preferred embodiment, the transmission module 100 further includes a lifting linear module 140, the lifting linear module 140 is movably mounted on the second linear module 120, and the lifting linear module 140 can be controlled to move to and from the photographing station 12 and the electrical measurement station 13 along the extending direction of the second linear module 120, and the carrying mechanism 300 is movably mounted on the lifting linear module 140, so that the carrying mechanism 300 is coupled to the second linear module 120 through the lifting linear module 140. Meanwhile, the lifting linear module 140 extends up and down along the extending direction perpendicular to the second linear module 120, and the carrying mechanism 300 can move up and down along the extending direction of the lifting linear module 140 in a controlled manner, so that the carrying mechanism 300 can clamp the product to be tested and move up and down, and the connector of the product to be tested can be freely pressed into the electrical testing cavity 401 or taken out of the electrical testing cavity 401.

It should be noted that the transmission direction may be a direction extending along a straight line, or may be a direction which is formed by a plurality of straight lines and extends in a bending manner as shown in the embodiment in the figure, that is, the first straight line module 110 and the third straight line module 130 are arranged in parallel, and the extending direction of the first straight line module and the third straight line module is perpendicular to the extending direction of the second straight line module 120, so that the occupied space of the conduction test system 10 is saved, and the arrangement of the conduction test system 10 is more compact.

The number of the shaping platforms 200, the carrying mechanisms 300 and the electrical measuring platforms 400 is not limited to only one, and may be multiple, for example, as shown in fig. 1 and 2, two shaping platforms 200 are installed on the first linear module 110 in parallel, two carrying mechanisms 300 are coupled to the second linear module 120 in parallel, at this time, there are two lifting linear modules 140, each carrying mechanism 300 is installed on a corresponding lifting linear module 140, and two electrical measuring platforms 400 are installed on the third linear module 130 in parallel. Through such setting, can make the conduction testing system 10 of this application can once carry out plastic and conduction test to a plurality of products that await measuring, improve the efficiency of test.

As shown in fig. 3, in some embodiments, the shaping platform 200 includes a first support plate 210 and a shaping mechanism 220, the shaping mechanism 220 being mounted at an edge of the first support plate 210. First backup pad 210 is movably installed on first straight line module 110, first backup pad 210 is used for bearing the product that awaits measuring, and be used for the fixed product main part that awaits measuring the product, be provided with a plurality of sucking discs 211 that are used for adsorbing the product main part on the first backup pad 210, preferably, still be provided with a plurality of fixed columns 212 that are used for fixed product main part on the first backup pad 210 for the product main part of the product that awaits measuring can be fixed by fixed column 212 when adsorbed on first backup pad 210 by sucking disc 211, thereby is fixed on first backup pad 210 more firmly.

In one embodiment, as shown in fig. 4, the reforming mechanism 220 includes a support base 221, a ram assembly 222, two first drive elements 223, and two pusher head assemblies 224. The upside of first backup pad 210 is located to supporting seat 221, and pressure head subassembly 222 movably wears to locate supporting seat 221 to set up with first backup pad 210 interval in the direction of height, when the product main part of the product that awaits measuring is placed on first backup pad 210, the connector is located between pressure head subassembly 222 and the first backup pad 210. Two pushing head assemblies 224 are oppositely arranged at intervals, each pushing head assembly 224 is connected to a corresponding first driving element 223, and the first driving element 223 can be a cylinder or a hydraulic cylinder, etc., and is not limited in particular. And each of the pusher head assemblies 224 is capable of being driven toward each other by a corresponding one of the first drive elements 223 to clamp the connector, thereby limiting displacement of the connector in a horizontal direction (as indicated by the reference numerals in the drawings); meanwhile, each push head assembly 224 is movably connected to the pressing head assembly 222, and the first driving element 223 drives the two push head assemblies 224 to approach each other, and simultaneously drives the pressing head assembly 222 to move downwards so as to limit the displacement of the connector in the vertical height direction (the direction indicated in the drawing), and the butt connector is pressed downwards, thereby finishing the shaping of the butt connector.

As shown in fig. 4 and 5, each pusher head assembly 224 includes a pusher head 2241 and a first wedge block 2242 fixedly connected to each other, the pressure head assembly 222 includes a pressing block 2221 and a second wedge block 2222, and each first wedge block 2242 is coupled to the pressing block 2221 through the second wedge block 2222. Specifically, the second wedge 2222 is disposed on the upper side of the pressing piece 2221, and the pressing piece 2221 is disposed at a distance from the first support plate 210. The supporting base 221 is provided with an installation position 2211, each pushing head 2241 is disposed in the installation position 2211 and disposed on two opposite sides of the pressing block 2221, each first wedge-shaped block 2242 is partially inserted into the installation position 2211, one end of each first wedge-shaped block 2242 inserted into the installation position 2211 is fixedly connected to a corresponding pushing head 2241 through a screw, each pushing head 2241 has a clamping portion 2241a for clamping the connector, the two clamping portions 2241a are disposed on two opposite sides of the pressing block 2221 in the horizontal direction, each first wedge-shaped block 2242 can drive the pushing head 2241 to move in the installation position 2211 toward the pressing block 2221 or away from the pressing block 2221 under the driving of the first driving element 223, so that the clamping portion 2241a can clamp the connector or release the connector.

One side of each first wedge block 2242 close to the second wedge block 2222 is provided with a first sliding surface 2242a, correspondingly, the second wedge block 2222 is provided with two second sliding surfaces 2222a which are symmetrically arranged at intervals along a direction (i.e. the horizontal direction shown in the figure) consistent with the moving direction of the push head assembly 224, each first sliding surface 2242a is parallel to the corresponding second sliding surface 2222a, and the distance between the two first sliding surfaces 2242a gradually increases in the top-bottom direction.

Preferably, the side wall of the supporting base is further provided with a through hole 2212 communicated with the installation position 2211, the pressing block 2221 is partially exposed from the through hole 2212, and the clamping portion 2241a of the pushing head 2241 is also located outside the installation position 2211, so that the clamping portion 2241a, the pressing block 2221, the first supporting plate 210 and the supporting base 221 of the two pushing heads jointly form a shaping gap 2223 for accommodating the connector outside the supporting base 221, the connector can be placed in the shaping gap 2223, and one end of the connector abuts against the supporting base 221, so as to be shaped.

Preferably, the shaping mechanism 220 further includes a first linear guide assembly 225, the first linear guide assembly 225 includes a first guide block 2251 and a first guide rail 2252, the first guide rail 2252 is fixedly mounted on a sidewall of the mounting portion 2211, the first guide block 2251 is fixedly connected to the first wedge 2242 and movably limited on the first guide rail 2252, such that when the first wedge 2242 is driven by the first driving element 223 to move relative to the second wedge 2222, the first wedge 2242, the push head 2241 and the first guide block 2251 can move together along the first guide rail 2252, thereby improving the smoothness of the movement of the push head 2241.

Further, the shaping mechanism 220 further includes a first elastic member 226, the second wedge-shaped block 2222 is connected to the pushing head 2241 through the first elastic member 226, and the first elastic member 226 may be an elastic member such as a spring, which is not particularly limited herein.

In this way, when the two pushing head assemblies 224 approach each other, the first sliding surface 2242a of each pushing head 2241 can abut against a corresponding second sliding surface 2222a and slide relative to the second sliding surface 2222a to push the second wedge 2222 and the pressing block 2221 to move downward together, so as to shape the connector placed in the shaping gap 2223 in the height direction, and the clamping portions 2241a of the two pushing heads 2241 can clamp the connector, so as to shape the connector in the horizontal direction.

Meanwhile, the first elastic member 226 is resiliently deformed by the pressing down of the second wedge block 2222; when the two push heads 2241 are away from each other, the first sliding surfaces 2242a can slide in opposite directions relative to the corresponding second sliding surfaces 2222a, and at this time, the elastic deformation of the first elastic member 226 is recovered, so as to drive the second wedge-shaped block 2222 and the pressing block 2221 to move upward together, so that the connector can be taken out from the reshaping gap 2223.

It should be noted that the number of the head pushing assemblies 224 may be only one, but the connector can be shaped only in the height direction at this time, the number of the head pushing assemblies 224 may also be an even number greater than two, and the connector can be shaped in the horizontal direction and the height direction at this time, so that the shaping effect is better, as long as the head pushing assemblies can be arranged in pairs and can achieve the purpose of simultaneously clamping the connector and pushing the pressing block 2221 to move downwards.

So, through above-mentioned design for the product main part and the connector of the product that awaits measuring can be fixed by first backup pad 210 and push head subassembly 224 respectively, make product main part and connector fixed a position respectively, and the winding displacement of having avoided the product that awaits measuring is dragged repeatedly. When shaping is performed, the driving force of the first driving element 223 can be decomposed into forces in multiple directions only by driving the push head assembly 224 to move towards one direction through the first driving element 223, so that the purpose of shaping both the fixed connector and the butt connector in the height direction and the horizontal direction is achieved, the shaping platform 200 is simple and reliable in structure, multiple driving structures are not required to be configured, and maintenance is facilitated.

In some embodiments, as shown in fig. 6, the handling mechanism 300 includes a carriage 310, a second drive element 320, a suction assembly 330, and a jaw assembly 340. The support 310 is movably installed on the lifting linear module 140, the second driving element 320 and the clamping jaw assembly 340 are fixedly installed on the support 310, the suction assembly 330 is connected with the second driving element 320, the second driving element 320 is the same as the first driving element 223 and can also be a driving source such as an air cylinder or a hydraulic cylinder, and the second driving element 320 is used for driving the suction assembly 330 to move up and down. The absorption assembly 330 comprises a hanging rack 331 and an absorption plate 332 arranged at the bottom of the hanging rack 331 and used for absorbing the product main body of the product to be detected, the clamping jaw assembly 340 is provided with clamping jaws 341 used for clamping the connector, the number of the clamping jaws 341 is at least two, and the two clamping jaws 341 are oppositely arranged and can be controlled to approach each other so as to clamp the connector.

Thus, after the shaping platform 200 finishes shaping the butt-joint plug-in unit, the first linear module 110 transfers the shaping platform 200 carrying the product to be tested from the shaping work to the photographing station 12, at this time, the shaping platform 200 is located below the carrying mechanism 300, the adsorption component 330 of the carrying mechanism 300 moves downward relative to the clamping jaw component 340, so that a height difference of 15mm at most is formed between the adsorption component 330 and the clamping jaw component 340, the adsorption plate 332 can adsorb the upper surface of the product body before the clamping jaw 341 of the clamping jaw component 340 clamps the plug-in unit, and thus, the carrying mechanism 300 can maintain the relative positions of the product body and the plug-in unit in the process of transferring the product to be tested from the shaping platform 200 by using the adsorption component 330 and the clamping jaw component 340 to perform sectional accurate positioning on the product body and the plug-in unit, so as to avoid the relative displacement between the product body and the plug-in unit in the transferring process, and lay the foundation for smoothly pressing the plug-in the electric testing cavity 401 in the subsequent process. Meanwhile, in products to be tested with different sizes and specifications, the installation positions and the heights of the connectors on the product main body are different, the products with different specifications can be adapted in a sectional type accurate positioning mode for the product main body and the connectors, and the phenomenon that the flat cable is pulled between the product main body of the product to be tested and the connectors is avoided.

Preferably, the handling mechanism 300 further comprises a rotating assembly 350, wherein the rotating assembly 350 is disposed on the frame 310 and located between the frame 310 and the clamping jaw assembly 340, and the rotating assembly 350 is used for driving the clamping jaw assembly 340 to rotate around an axial direction (i.e. the direction shown by the dotted line) perpendicular to the conveying direction. This allows for angular adjustment of the connector when the handling mechanism 300 transfers the product to be tested to the top of the electrical testing platform 400, thereby allowing the connector to be more accurately pressed into the electrical testing cavity 401.

Preferably, as shown in fig. 7, the clamping jaw assembly 340 further has a pushing block 342, the pushing block 342 can be controlled to move along an axis direction (the direction indicated by the dotted line in the figure) coplanar with the transmission direction and perpendicular to the transmission direction with respect to the clamping jaw 341, so that when the clamping jaw 341 clamps the connector for taking a picture, the pushing block 342 can also move toward a direction close to the camera 500 to abut against the connector, so that the flexible connector can be firmly clamped on the clamping jaw 341, thereby preventing the connector from being deformed to affect the picture taking result when the camera 500 takes a picture.

In some embodiments, as shown in fig. 8, the electrical measurement platform 400 includes a base 410, a second support plate 420, a third drive element 440, and an electrical measurement mechanism 450. The electrical measurement cavity 401 is disposed in the electrical measurement mechanism 450, the base 410 is movably mounted on the third linear module 130 and is movable along the extending direction of the third linear module 130, the second support plate 420 is disposed parallel to the base 410 and is movably connected to the base 410 through four guide posts 430, the third driving element 440 is mounted on the base 410 and is connected to the second support plate 420, the third driving element 440 is also a driving source such as a cylinder or a hydraulic cylinder and is used for driving the second support plate 420 to move up and down relative to the base 410, so that when the handling mechanism 300 transfers the product to be tested to the upper side of the electrical measurement platform 400, the second support moves up to support the lower surface of the product body before the suction assembly 330 of the handling mechanism 300 releases the product body of the product to be tested and the clamping jaw assembly 340 releases the connector, thereby enabling the product to be tested to maintain the relative position between the product body and the connector after being shaped to the connector to the utmost during the interaction process of transferring the product from the suction assembly 330 to the electrical measurement platform 400, so as to ensure that the product to be accurately pressed into the electrical measurement cavity 401.

Similar to the first support plate 210 of the shaping platform 200, the second support plate 420 is also provided with a plurality of suction cups 211 and/or a plurality of fixing posts 212, which also function to fix the product body of the product to be tested on the second support plate 420 more firmly, so as to better maintain the relative position between the connector of the product to be tested and the product body.

The electrical measuring mechanism 450 includes a fixed block 451, a pre-press block 452, and a final press block 454. The fixing block 451 is fixedly arranged at the edge of the base 410, the pre-pressing block 452 is arranged parallel to and spaced from the fixing block 451, one side surface of the pre-pressing block 452 is arranged opposite to one side surface of the fixing block 451 and forms the electrical measurement cavity 401 together, and the second supporting plate 420 is lifted upwards to reach a maximum height lower than the top ends of the fixing block 451 and the pre-pressing block 452. The pre-pressing block 452 is movably coupled to the fixing block 451 through a slider 453, and the slider 453 is movably installed at the upper end of the fixing block 451, so that the pre-pressing block 452 can be reciprocally moved on the fixing block 451 through the slider 453 in a pressing direction (i.e., the direction indicated in the drawing) to change the size of the electrical measurement cavity 401 in the pressing direction.

In one embodiment, as shown in fig. 9, a fourth driving member 455 and a track guide 456 are fixedly disposed on the fixed block 451, the track guide 456 is disposed along a height direction (i.e., a direction indicated by a reference mark in the drawing), an output end of the fourth driving member 455 is connected to the pre-pressing block 452, and the fourth driving member 455 is used for driving the pre-pressing block 152 to move up and down with respect to the fixed block 451. Preferably, as shown in fig. 10, one side of the trajectory guide block 456 has a guide surface 4561, and the guide surface 4561 includes a first guide surface 4561a, a second guide surface 4561b, and a third guide surface 4561c which are connected in series in the height direction, wherein the second guide surface 4561b is a curved surface, and both ends of the second guide surface 4561b are connected to the first guide surface 4561a and the third guide surface 4561c, respectively. In the pressing direction, the distance between the third guide surface 4561c and the plane on which the side surface of the preload block 452 closer to the fixed block 451 is larger than the distance between the first guide surface 4561a and the plane on which the side surface of the preload block 452 closer to the fixed block 451. Correspondingly, the pre-pressing block 452 is provided with a sliding body 457, the sliding body 457 is preferably a roller capable of rotating around the central axis of the sliding body 457, the sliding body 457 is connected with a guide surface 4561 in a rolling manner, the pre-pressing block 452 is coupled to a track guide block 456 through the sliding body 457, so that the pre-pressing block 152 can move up and down in the height direction under the driving of a fourth driving element 455, and simultaneously can drive the sliding body 457 to move up and down in the height direction, so that the sliding body 157 rolls on the guide surface 4561, and the guide surface 4561 can guide the pre-pressing block 452 to move in the pressing direction relative to the fixing block 451.

In this way, after the connector is pressed into the electrical measurement cavity 401 by the jaw assembly 340 of the handling mechanism 300 and the product body is placed and fixed on the second support plate 420, when the fourth driving member 455 drives the trajectory guide block 456 to move upward, the second guide surface 4561b and the third guide surface 4561c can be sequentially brought into contact with the slider 457, so that the pre-pressing block 452 moves in the pressing direction toward the fixing block 451 to press the connector into the electrical measurement cavity 401, thereby being able to prevent it from falling. Meanwhile, the second support plate 420 is lifted upwards and fixes the product main body, at this time, the clamping jaw assembly 340 of the carrying mechanism 300 releases the connector, so that the product to be detected is not moved when being transferred from the carrying mechanism 300 to the electrical measurement platform 400, and the second support plate 420 and the pre-pressing block 452 of the electrical measurement platform 400 move, so that the product to be detected is transferred to the electrical measurement platform 400 in a seamless connection manner, and the relative position between the shaped connector and the product main body is still maintained after the product to be detected is transferred to the electrical measurement platform 400. Then, when the fourth driving member 455 drives the trajectory guide block 456 downward, the second guide surface 4561b and the first guide surface 4561a can be brought into contact with the slider 457 in sequence, so that the pre-press block 452 is moved in the pressing direction away from the fixing block 451 to release the pre-press block 452 from the connector, so that the connector can be removed from the electrical test cavity 401.

Therefore, through the design, the track guide block 456 can be driven to move up and down through the fourth driving element 455 in a narrow space in the electrical measuring mechanism 450, the pre-pressing block 452 can be driven to move in the horizontal pressing direction, the displacement in the height direction is converted into the displacement in the horizontal direction, and the occupied space of the electrical measuring mechanism 450 is saved.

In a preferred embodiment, with continued reference to fig. 9, the slide 453 is connected to the fixing block 451 by a second elastic member 458, and the second elastic member 458 is configured to provide an elastic force for enabling the pre-pressing block 452 to move closer to the fixing block 451 to press against the connector when the pre-pressing block 452 moves away from the fixing block 451 in the pressing direction. When the track guide 456 drives the pre-pressing block 452 to move in the pressing direction away from the fixed block 451, the slide 453 also moves in the direction away from the fixed block 451, and at this time, the second elastic member 458 is deformed in a recoverable manner. When the trajectory guide 456 moves the depressing block 452 in the pressing direction toward the fixed block 451, the deformation of the second elastic member 458 is restored.

In this way, the slider 453 is connected to the fixing block 451 through the second elastic member 458, so that the force of the pre-pressing block 452 acting on the connector is the elastic force generated by the second elastic member 458, and the pre-pressing block 452 can slightly pre-press the connector, thereby preventing the connector from being damaged due to excessive pre-pressing force.

In one embodiment, as shown in fig. 8 and 11, the final pressing block 454 is an elongated structure movably disposed on the second supporting plate 420 along the pressing direction, and a fifth driving element 459 is disposed at a bottom of the second supporting plate 420, the fifth driving element 459 may also be a pneumatic cylinder or a hydraulic cylinder, and the fifth driving element 459 is connected to the final pressing block 454, so that the final pressing block 454 can be driven by the fifth driving element 459 on the second supporting plate 420 to move relative to the second supporting plate 420 along the pressing direction.

The terminal block 454 is used for moving the connector in the direction close to the fixing block 451 along the pressing direction after the connector is pre-pressed and fixed by the pre-pressing block 452, so that one end of the terminal block 454 is also abutted against the connector, so that the opposite two sides of the connector are completely abutted against the side wall of the electrical testing cavity 401, the contact on the connector can be completely contacted with the conductive part arranged on the side wall of the electrical testing cavity 401, and the connector can be smoothly butted to start conduction testing.

Preferably, the second support plate 420 is mounted with a second linear guide assembly 460, the second linear guide assembly 460 includes a second guide block 461 and a second guide rail 462, the second guide block 461 is movably mounted on the second guide rail 462 and can reciprocate along the second guide rail 462, and the second guide rail 462 is fixedly mounted to the lower side of the final pressure block 454, so that the final pressure block 454 can also smoothly move relative to the second support plate 420.

Further, as shown in fig. 12, since the size of the connector is small, in order to allow the pre-pressing block 452 and the final pressing block 454 to contact the connector at the same time, the pre-pressing block 452 has a pre-pressing pin 4521 having an outer diameter slightly smaller than that of the connector, and the pre-pressing pin 4521 abuts against the connector when the pre-pressing fixing is performed to the connector. An avoiding groove 4541 is formed in the end portion of the final pressing block 454 close to the electrical measurement cavity 401, and when the final pressing block 454 moves to a position close to the electrical measurement cavity 401 and abuts against the connector, the part of the pre-pressing pin 4521 abutting against the connector is just accommodated in the avoiding groove 4541.

Thus, under the condition that the size of the connector is very small, the pre-pressing block 452 and the final pressing block 454 can be directly abutted against the connector by adopting the design, and compared with a mode that the final pressing block 454 is abutted against the pre-pressing block 452, the abutting force applied by the final pressing block 454 is transmitted to the connector by the pre-pressing block 452, the transmission of the abutting force is more stable, the contact point of the connector can be completely contacted with the conductive part in the electrical testing cavity 401, and the testing effect is further ensured.

Referring to fig. 1 and fig. 2, the operation flow of the conduction testing system 10 is as follows:

firstly, shaping a connector with an irregular incoming material shape in a product to be detected by a shaping platform 200;

secondly, after shaping, the first linear module 110 transfers the shaping platform 200 carrying the product to be tested to the photographing station 12, and after the product to be tested is transferred to the carrying mechanism 300 by the carrying structure, the photographing camera 500 photographs the product to be tested to obtain the XY coordinate adjustment parameters of the product to be tested relative to the electrical measuring platform 400;

and thirdly, after the photographing is finished, the product to be tested is transferred to the electrical testing station 13 by the second linear module 120, and the system adjusts the position of the electrical testing platform 400 according to the XY coordinate adjustment parameters acquired by photographing by the photographing camera 500, so that the carrying mechanism 300 can smoothly transfer the product to be tested to the electrical testing platform 400, and the connector is smoothly pressed into the electrical testing cavity 401 for conducting the conduction test.

In this way, by providing the shaping platform 200 in the conduction testing system 10, connectors with irregular incoming material shapes can be shaped within a theoretical range. In the whole working process, the shaping platform 200, the carrying mechanism 300 and the electric measuring platform 400 are used for respectively positioning the product main body and the connector in a segmented accurate positioning mode, the shape of the connector after shaping is always ensured, and the relative position between the product main body and the connector is kept unchanged, so that the connector can be accurately pressed into the electric measuring cavity 401 of the electric measuring platform 400, the flat cable between the connector and the product main body is prevented from being pulled mutually, the pressing precision is improved, the crimping conduction of the connector is ensured, and the testing precision is effectively improved. And the conduction test system 10 is a full-automatic assembly line, so that the technological processes of shaping, transferring and conduction testing can be automatically completed, and the process beats are optimized in place, so that the automation degree is high, the labor cost is reduced, and the test efficiency is greatly improved.

Finally, it should be noted that, in the above embodiments, various technical features may be arbitrarily combined, and for the sake of simplicity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations should be considered as the scope of the description in this specification.

The above-mentioned embodiments only express one of the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A conduction test system, comprising: the device comprises a transmission module, and a shaping platform, a carrying mechanism and an electric measuring platform which are sequentially arranged on the transmission module along a transmission direction;

2. The conduction testing system according to claim 1, wherein the conduction testing system has a shaping station, a photographing station and an electrical testing station which are sequentially arranged at intervals along the conveying direction, the photographing station is provided with a photographing camera, and the photographing camera is used for photographing and positioning the position of the product to be tested relative to the electrical testing platform, so that the conveying mechanism can accurately press the part to be tested into the electrical testing cavity.

3. The conduction testing system according to claim 2, wherein the transport module includes a first linear module, a second linear module and a third linear module sequentially disposed at intervals along the transport direction, the shaping platform is movably mounted on the first linear module to be capable of moving to and from the shaping station and the photographing station, the carrying mechanism is movably coupled on the second linear module to be capable of moving to and from the photographing station and the electrical testing station, and the electrical testing platform is movably mounted on the third linear module to be capable of adjusting a relative position between the electrical testing platform and the product to be tested when the carrying mechanism transfers the product to be tested to the electrical testing station.

4. The continuity testing system according to claim 3, wherein the transfer module further comprises a lifting linear module movably mounted on the second linear module and movable relative to the second linear module along the transfer direction, and the handling mechanism is movably mounted on the lifting linear module to be connected to the second linear module through the lifting linear module, and the handling mechanism is capable of being controlled to move up and down relative to the lifting linear module.

5. The conduction testing system according to claim 1, wherein the shaping platform includes a first support plate and a shaping mechanism, the shaping mechanism is disposed on the first support plate, the first support plate is used for carrying the product main body, the shaping mechanism has a pressing head assembly and at least two pushing head assemblies, each pushing head assembly has a first sliding surface, the pressing head assembly has at least two second sliding surfaces which are parallel to a corresponding one of the first sliding surfaces and are oppositely disposed in a horizontal direction, and a distance between the two second sliding surfaces gradually increases in a top-down direction;

the at least two push head assemblies can be controlled to mutually approach or keep away from each other along the horizontal direction, so that the first sliding surface is attached to the second sliding surface and moves relative to the second sliding surface to clamp or release the part to be measured of the product to be measured, and the push head assemblies are driven to move up and down to shape the part to be measured of the product to be measured.

6. The conduction testing system according to claim 5, wherein each said pusher assembly comprises a pusher and a first wedge connected to each other, said ram assembly comprises a pressing block and a second wedge connected to each other, said first wedge is coupled to said pressing block through said second wedge, said first sliding surface is disposed on said first wedge, said second sliding surface is disposed on said second wedge;

the shaping mechanism further comprises a supporting seat, an installation position is arranged on the supporting seat, the push head and the pressing block are partially arranged in the installation position, the push head is provided with a clamping part used for clamping the part to be measured, the clamping part is exposed out of the installation position, the side wall of the supporting seat is further provided with a through hole communicated with the installation position, the pressing block is partially exposed out of the through hole, the push head is oppositely arranged, the clamping part is located on the horizontal direction at the two opposite sides of the pressing head, and the clamping part, the pressing block, the first supporting plate and the supporting seat are jointly located outside the supporting seat to form a shaping gap used for containing the part to be measured.

7. The conduction test system according to claim 1, wherein the handling mechanism includes:

the bracket is movably connected with the transmission module;

and the adsorption component is movably arranged on the support and can be controlled to move up and down relatively to the clamping jaw component, so that the clamping jaw component can clamp the part to be detected and adsorb the product main body before.

8. The conduction testing system according to claim 7, wherein said handling mechanism further comprises a rotation assembly, said jaw assembly being coupled to said carriage by said rotation assembly, said rotation assembly being capable of driving said jaw assembly to rotate about an axis perpendicular to said transport direction.

9. The conduction test system of claim 1 wherein the electrical testing platform comprises:

the base is movably arranged on the transmission module;

mechanism is surveyed to electricity, including fixed block, briquetting in advance and final briquetting, the fixed block is fixed to be set up on the base, pre-briquetting movably connect in the fixed block, and can be relative press direction reciprocating motion, a lateral surface of briquetting in advance with a lateral surface of fixed block sets up relatively and forms jointly the die cavity is surveyed to the electricity, final briquetting movably sets up in the second backup pad, and can be relative the second backup pad is followed press direction reciprocating motion.

10. The conduction testing system according to claim 9, wherein the electrical measuring mechanism further comprises a trajectory guide block which is coupled to the pre-press block, and which has a guide surface, the pre-press block being also controllably movable up and down relative to the fixed block and the trajectory guide block so that the guide surface can guide the pre-press block to move up and down reciprocally in the pressing direction.

11. The conduction testing system according to claim 10, wherein the pre-pressing block is provided with a sliding body, the sliding body is movably connected to the guide surface, the guide surface comprises a first guide surface, a second guide surface and a third guide surface which are connected in sequence, and in the pressing direction, the distance between the third guide surface and the extension surface of the pre-pressing block on the side surface close to the fixed block is larger than the distance between the first guide surface and the extension surface of the pre-pressing block on the side surface close to the fixed block;

when the pre-pressing block moves up and down relative to the track guide block, the sliding body can be driven to move on the guide surface, so that the pre-pressing block is driven to move along the pressing direction.

12. The conduction testing system according to claim 11, wherein the pre-pressing block has a pre-pressing pin for abutting against the portion to be tested, the final pressing block has an avoiding groove, and when the final pressing block is close to the electrical testing cavity and abuts against the portion to be tested, the pre-pressing pin is used for abutting against a portion of the portion to be tested to be received in the avoiding groove.