CN218411000U - Inspection device - Google Patents

Abstract

The present disclosure relates to an inspection device for inspecting the profile of a product to be inspected, the inspection device comprising: the workbench is provided with a placing position for placing a product to be tested, and the surface contour of the placing position is consistent with the lower surface contour of a standard product; and the detection mechanism comprises a detection piece movably arranged along a first direction on the workbench, the detection piece is positioned above the placement position and is used for placing the placement space of the product to be detected, the lower surface of the detection piece is provided with a detection part, the extension direction of the contour line of the projection of the detection part along the first direction is parallel to the extension direction of the contour line of the projection of the upper surface along the first direction when the position is placed, so that the detection piece can move along the first direction to detect the contour degree of the product to be detected. The inspection device provided by the disclosure can improve the inspection efficiency of the profile tolerance of the curved surface cover plate.

Description

Inspection device

Technical Field

The disclosure relates to the field of inspection of profile tolerance of curved surface cover plates, in particular to an inspection device.

Background

In the application development process of the vehicle-mounted curved screen, products such as attractive appearance, more and more various design forms, large size, large arc height, special shape and the like are continuously produced. The existing large-size curved surface cover plate processing is mostly derived and developed from a 3D mobile phone cover plate technology, and faces new difficulties in detection of the outline of large-size curved surface glass, the detection efficiency is low due to the large size, and the outline degree is regarded as a key management project due to the association of subsequent screen attachment. The method is also influenced by hot bending and strengthening in processing, the risk of unqualified profile degree is high, and difficulty is brought to quality management; in actual production, for a vehicle-mounted large-size curved surface cover plate, the contour degree detection is usually carried out after hot bending and strengthening, the surface contour is controlled by adopting a three-dimensional point location mode in the existing detection means, the three-dimensional efficiency is extremely low, a single sheet is about 10-15 minutes, along with the increase of the product size, the measurement points are increased, the measurement time is increased, the point location mode cannot cover the whole surface, the risk of unqualified and missed detection in a local area is caused, three-coordinate equipment is expensive, the number of equipment is few and is hundreds of thousands, the equipment size is larger and more expensive, and due to the problem of detection efficiency, only sampling detection can be adopted, so that the product shipment has a large missed detection risk.

SUMMERY OF THE UTILITY MODEL

The object of the present disclosure is to provide an inspection device capable of improving the inspection efficiency of the profile of a curved cover plate to at least partially solve the above technical problems.

In order to achieve the above object, the present disclosure provides an inspection apparatus for inspecting a profile tolerance of a product to be inspected, the inspection apparatus including:

the workbench is provided with a placing position for placing a product to be tested, and the surface contour of the placing position is consistent with the lower surface contour of a standard product; and the detection mechanism comprises a detection piece movably arranged along a first direction on the workbench, the detection piece is positioned above the placement position and is used for placing the placement space of the product to be detected, the lower surface of the detection piece is provided with a detection part, the extension direction of the contour line of the projection of the detection part along the first direction is parallel to the extension direction of the contour line of the projection of the upper surface along the first direction when the position is placed, so that the detection piece can move along the first direction to detect the contour degree of the product to be detected.

Optionally, the table comprises a base and a main table top;

the base is detachably connected to the main table top, and the placement position is formed on the upper surface of the base;

the main table top is provided with a guide mechanism which is detachably connected with the detection piece and used for guiding the detection piece to move along the first direction.

Optionally, the placement bit has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction, the first direction is perpendicular to the second direction, and both are parallel to a horizontal direction, and the base is provided with a first positioning structure on the first side and a second positioning structure on the third side and/or the fourth side.

Optionally, the first and/or second locating features comprise at least one locating pin.

Optionally, a reference portion is disposed on the base, so as to detect a displacement of the to-be-detected product located on the placement position relative to the reference portion when the detection member moves along the first direction.

Optionally, the reference portion is configured as a reference line, the placement location is located between the reference line and the first positioning structure, and the extension direction of the reference line is parallel to the contour line of the lower side edge close to the second side when the standard product is placed at the placement location; alternatively, the first and second electrodes may be,

the reference part is constructed to be inwards concave in the groove of the base, the placing position is located between the groove and the first positioning structure, and the extending direction of the groove is parallel to the contour line of the lower side edge of the second side when the standard product is placed at the placing position.

Optionally, a positioning portion is disposed on the base, a positioning matching portion adapted to the positioning portion is disposed on the detecting member, and the positioning portion and the positioning matching portion are configured to position the detecting member relative to the base in the second direction.

Optionally, shoulders are formed at two opposite ends of the base in the second direction, the placement position is located between the two shoulders, and the two shoulders are the positioning portions;

the detection part is constructed as a detection plate extending along the vertical direction, two opposite ends of the detection plate along the second direction are respectively provided with an inverted L-shaped positioning groove matched with the shoulder, the detection part is positioned between the two positioning grooves, and the two positioning grooves are positioning matching parts.

Optionally, the guide mechanism includes a slide bar and a mounting bracket, the slide bar is disposed on the main table and extends along a first direction, the mounting bracket is slidably connected to the slide bar, and the detection member is detachably connected to the mounting bracket.

Optionally, the number of the slide bars is two and is located respectively the both sides of base, the mounting bracket slidable connects in two the slide bar.

Through above-mentioned technical scheme, this inspection device that openly provides promptly, when moving along first direction through observing the detection piece, whether touch the friction product that awaits measuring or even drive the product that awaits measuring and remove, can detect out directly perceivedly whether qualified of profile tolerance of this product that awaits measuring. Like this, carry out high efficiency profile tolerance through detection mechanism and examine, efficient detection efficiency can realize treating the product that leaves the factory and accomplish whole detection, but not the selective examination of partial product, has reduced the defective rate when the product leaves the factory to a very big degree to detection mechanism simple structure in this disclosure adopts this detection mechanism to detect the product, and it is convenient to detect the flow, when satisfying high-efficient detection, has also reduced detection mechanism's manufacturing cost.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic view of the overall structure of a test apparatus provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a test apparatus according to an exemplary embodiment of the present disclosure when a product to be tested is placed on the test apparatus;

FIG. 3 is a schematic view of a positional relationship between a standard product and a detection member provided in an exemplary embodiment of the present disclosure;

FIG. 4 is a schematic illustration of a positional relationship between a qualified product and a test piece provided in an exemplary embodiment of the present disclosure;

FIG. 5 is a schematic view of a first positional relationship between a rejected product and a test piece as provided in an exemplary embodiment of the present disclosure;

FIG. 6 is a schematic view of a second positional relationship between a rejected product and a test piece as provided in an exemplary embodiment of the present disclosure;

fig. 7 is a schematic view of a third positional relationship between a defective product and a detecting member provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

1-a workbench; 101-a base; 1011-placing a bit; 1012-reference part; 1013-positioning part; 102-a main mesa; 2-a detection member; 201-positioning fit; 202-a detection section; 3-a first positioning structure; 4-a second positioning structure; 5-a product to be detected; 6-standard product; 7-a guide mechanism; 701-a slide bar; 702-a mounting frame.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the use of directional words such as "upper and lower" generally means "upper and lower" opposing in the direction of gravity when the respective components are in use, and reference may be made to upper and lower in the drawings of fig. 1 to 2. "inner and outer" refer to the inner and outer contours of a component or structure itself. In addition, it should be noted that terms such as "first", "second", and the like are used to distinguish one element from another, and have no order or importance. Moreover, in the following description, when referring to the figures, the same reference numbers in different figures represent the same or similar elements unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

The method comprises the following steps that the outline degree of a vehicle-mounted large-size curved surface cover plate is detected, the conventional detection mode adopts a three-dimensional point location mode, the three-dimensional efficiency is extremely low, the detection time of a single curved surface cover plate is about 10-15 minutes, the measurement points are increased along with the increase of the size of the curved surface cover plate, the measurement time is increased, the point location mode cannot cover the whole surface type, and the risk of unqualified and missed detection in a local area is caused, so that the disclosure aims to provide the inspection device capable of quickly, efficiently and comprehensively testing the curved surface cover plate;

in an embodiment of the present disclosure, there is provided an inspection apparatus, as shown in fig. 1 and 2, for inspecting a profile tolerance of a product 5 to be inspected, the inspection apparatus including: the workbench 1 is provided with a placing position 1011 for placing a product 5 to be measured, and the surface contour of the placing position 1011 is consistent with the lower surface contour of a standard product 6; and a detection mechanism, including the detection piece 2 of movably setting on workstation 1 along the first direction, detection piece 2 is located place the position 1011 top and with place and form the space of placing that is used for placing the product 5 that awaits measuring between the position 1011, the lower surface of detection piece 2 has detection portion 202, this detection portion 202 is parallel at the extending direction of the outline line of the upper surface of placing when placing the position 1011 at the outline line of the projection of upper surface along the first direction when standard product 6 is placed along the first direction, with the profile tolerance of the product 5 that awaits measuring of detection through the removal of detection piece 2 along the first direction.

The detection of the profile degree in the present disclosure refers to the detection of the profile degree of the upper surface and the lower surface of the product 5 to be detected.

Through above-mentioned technical scheme, this inspection device that openly provides promptly, when moving along first direction through observing the test piece 2, whether touch the product 5 that awaits measuring of friction or drive the product 5 that awaits measuring even and remove, can detect out directly perceivedly whether qualified of the profile tolerance of this product 5 that awaits measuring. Like this, carry out high efficiency profile tolerance through detection mechanism and examine, efficient detection efficiency can realize treating the product that leaves the factory and accomplish whole detection, but not the selective examination of partial product, has reduced the defective rate when the product leaves the factory to a very big degree to detection mechanism simple structure in this disclosure adopts this detection mechanism to detect the product, and it is convenient to detect the flow, when satisfying high-efficient detection, has also reduced detection mechanism's manufacturing cost.

The detection piece 2 is of a structure which is not easy to deform, such as stainless steel, and is formed by linear cutting of stainless steel materials, so that the high precision of the lower surface of the detection piece 2 can be guaranteed.

Description is made of an embodiment of the detecting member 2 in the present disclosure: aiming at the detection of the profile tolerance of the curved-surface cover plate, when the product 5 to be detected is placed on the placing position 1011, if the product 5 to be detected is a standard product, the lower surface of the product 5 to be detected is attached to the upper surface of the placing position 1011, in order to further ensure that the product 5 to be detected is a qualified product, the detection of the detection piece 2 is required, the qualified product is determined through the detection, and otherwise the qualified product is not qualified;

after the standard product 6 is placed at the placing position 1011, the detection part 2 is positioned above the standard product 6, a gap exists between the lower surface of the detection part 2 and the upper surface of the standard product 6, the gap is the tolerance range of the profile tolerance of the product, if the profile of the product to be detected is far beyond the tolerance range of the profile of the qualified product, after the product to be detected is placed on the placing position 1011, a detection person can pick out unqualified products through visual observation, and when the profile of the product to be detected is not far beyond the tolerance range of the profile of the qualified product, the detection person can not visually observe whether the product 5 to be detected is qualified, and further detection is required to be carried out on the product 5 to be detected through the detection part 2;

when the detection piece 2 moves along the first direction, the movement of the detection piece 2 can be ensured, and the whole upper surface of the product 5 to be detected can be covered, namely the whole upper surface of the product 5 to be detected can be completely detected. That is, referring to fig. 3 and 4, when the detecting member 2 moves in the first direction without touching the product 5 to be detected, it indicates that the profile of the product 5 to be detected meets the requirement. Referring to fig. 5 to 7, when the detecting member 2 moves along the first direction and touches the product 5 to be detected to drive the product 5 to be detected to move, it indicates that the profile of the product 5 to be detected does not meet the requirement.

For example, fig. 3 is a schematic sectional view of the standard product 6 when placed on the placement site; the sample to be tested shown in fig. 4 has a deviation from the profile of the standard product 6, but within an allowable tolerance range, and belongs to a qualified product; fig. 5 to 7 are schematic cross-sectional views showing product failures caused at various positions when a plurality of defective products are placed on the placement position 1011, and it can be seen from fig. 5 to 7 that the defective products come into contact with the detection member 2.

It should be noted that the product 5 to be tested in the present disclosure includes, but is not limited to, a curved cover plate, and the profile of the product to be tested can be detected by the detecting device in the present disclosure if the product to be tested has the requirement of detecting the profile and is a product that is bent in a single axial direction.

A uni-axially curved product is understood to be a product in which the contours of the projection surfaces in the first direction coincide in one curve.

In the specific embodiment provided by the present disclosure, referring to fig. 1 and 2, the placing position 1011 has a first side and a second side opposite to each other along a first direction and a third side and a fourth side opposite to each other along a second direction, the first direction is perpendicular to the second direction, and both are parallel to the horizontal direction, and the first positioning structure 3 located on the first side and the second positioning structure 4 located on the third side and/or the fourth side are/is disposed on the working table 1.

First location structure 3 and second location structure 4 that are equipped with on workstation 1, aim at convenient and fast more places the product 5 that awaits measuring on placing position 1011 to when satisfying convenient and fast and placing, accomplish placing that the product 5 that awaits measuring can be accurate on placing position 1011, the inaccurate condition of testing result that can not appear because of the product 5 that awaits measuring leads to because of the locating position appears.

Fig. 1 exemplarily shows an embodiment in which a first positioning structure 3 is provided at a first side and a second positioning structure 4 is provided at a third side.

The first direction may refer to the X direction in fig. 1, and the second direction may refer to the Y direction in fig. 1.

The first and second positioning structures 3, 4 may be configured in any suitable manner, for example, the first and/or second positioning structures 3, 4 may include at least one positioning pin to enable quick positioning by contacting an edge of the product 5 to be tested with a positioning pin of the respective side.

In addition, the first positioning structure 3 and the second positioning structure 4 in the present disclosure include but are not limited to positioning pins, and any object capable of playing a limiting role can be used as the first positioning structure 3 and the second positioning structure 4, such as a threaded rod, a positioning protrusion, and the like.

In the specific embodiment provided by the present disclosure, as shown with reference to fig. 1 and 2, the work table 1 includes a base 101 and a main table 102; the base 101 is detachably connected to the main table-board 102, the placing position 1011 is formed on the upper surface of the base 101, and the first positioning structure 3 and the second positioning structure 4 are arranged on the base 101; the main table 102 is provided with a guiding mechanism 7, and the guiding mechanism 7 is detachably connected with the detecting member 2 for guiding the detecting member 2 to move along the first direction.

The main table-board 102 in the present disclosure adopts a structure which is not easy to deform, the surface flatness is high, such as marble or stainless steel plates or aluminum alloy plates, four corners of the main table-board 102 are provided with threaded holes for connecting shaft supports (to be described below), the middle part is provided with threaded holes for connecting the base 101, the structure mainly ensures the flatness of the upper surface, the installation precision is ensured, the horizontal precision after the assembly can be adjusted by gaskets with different thicknesses in practical application, two sliding rods (to be described below) are ensured at the same horizontal height, the flatness after the base 101 is installed is not deformed by screwing screws, and the shape of the profiling surface is changed.

The workbench 1 in the disclosure comprises a base 101 and a main table-board 102 which are detachably connected, wherein the upper surface of the base 101 is provided with a placing position 1011 for placing a product 5 to be detected, and the base 101 and the main table-board 102 are detachably connected for the purpose of being suitable for various products needing to detect the profile tolerance;

it should be noted that, when detecting the profile tolerance of different products 5 to be detected, the base 101 and the detecting element 2 corresponding to the product 5 to be detected need to be installed on the main table 102, and the product 5 to be detected needs to be a product bent in a single axial direction.

In the embodiment provided by the present disclosure, referring to fig. 1 and fig. 2, a reference part 1012 is provided on the base 101 for detecting the displacement of the product 5 to be tested on the placing position 1011 relative to the reference part 1012 when the detecting member 2 moves along the first direction.

Reference portion 1012 is used for, whether be qualified product after being convenient for the tester to observe the product 5 that awaits measuring through the detection of detection piece 2, move and pass through whole product 5 upper surface that awaits measuring along the first direction as detection piece 2, for accomplishing once detection promptly, product 5 is unqualified product if awaiting measuring, product 5 that awaits measuring can contact with detection piece 2 so, along with the removal of detection piece 2, detection piece 2 can drive product 5 that awaits measuring and remove together, at this moment, whether take place to remove for reference portion 1012 through observing product 5 that awaits measuring, can judge whether the product 5 that awaits measuring is qualified product.

The reference portion 1012 may be configured in any suitable manner according to the actual application requirements, for example, in some embodiments, referring to fig. 2, the reference portion 1012 is configured as a reference line, the placing location 1011 is located between the reference line and the first positioning structure 3, and the extension direction of the reference line is parallel to the contour line of the lower side edge of the standard product 6 close to the second side when the placing location 1011 is placed. Therefore, after the product 5 to be detected is contacted with the detection piece 2, whether the product 5 to be detected is a qualified product can be obtained by observing the position relation between the product 5 to be detected and the reference line.

In other embodiments, the reference portion 1012 may also be configured to be recessed into a groove of the base 101, and the placement position 1011 is located between the groove and the first positioning structure 3, and the extending direction of the groove is parallel to the outline of the edge of the standard product 6 close to the second side when the placement position 1011 is placed. Therefore, after the product 5 to be detected is in contact with the detection piece 2, whether the product 5 to be detected is a qualified product can be obtained by observing the position relation between the product 5 to be detected and the groove.

In the specific embodiment provided by the present disclosure, referring to fig. 3, the base 101 is provided with a positioning portion 1013, the detecting member 2 is provided with a positioning matching portion 201 matched with the positioning portion 1013, and the positioning portion 1013 and the positioning matching portion 201 are configured to position the detecting member 2 in the second direction relative to the base 101.

Location portion 1013 that is equipped with on the base 101 and the detection piece 2 be equipped with location cooperation portion 201 of location portion 1013 looks adaptation and act on in, because of verifying attachment in this disclosure can carry out the profile tolerance to the single axial bending product of multiple shape and detect, when needs examine time measuring different single axial bending products, last product 5 that awaits measuring detects the back that finishes, need change detection piece 2 and base 101, after the change finishes, assembly error can inevitably appear in the distance between detection piece 2 and the base 101, influence the detection of subsequent product 5 profile tolerance that awaits measuring, this moment, just can realize the quick location of detection piece 2 and base 101 through location portion 1013 and location cooperation portion 201.

The positioning part 1013 and the positioning matching part 201 may be configured in any suitable manner according to the actual application requirement, for example, two opposite ends of the base 101 in the second direction are formed with shoulders, the placing position 1011 is located between the two shoulders, and the two shoulders are the positioning parts 1013; the detection member 2 is configured as a detection plate extending in the vertical direction, the two opposite ends of the detection plate in the second direction are both formed with inverted L-shaped positioning grooves adapted to the shoulder, the detection portion 202 is located between the two positioning grooves, and the two positioning grooves are positioning fit portions 201.

The two opposite ends of the detection plate along the second direction are both provided with inverted L-shaped positioning grooves matched with the shoulders, after the detection piece 2 and the base 101 are installed, the gap of 0.01-0.03mm after installation needs to be ensured, a plug gauge can be inserted into the gap between the positioning part 1013 and the positioning matching part 201, the detection piece 2 and the base 101 are confirmed to be in an expected assembly position through the plug gauge, the gap precision between the installed detection piece 2 and the placement position 1011 is ensured, and the detection precision is ensured.

In the specific embodiment provided by the present disclosure, referring to fig. 1 and 2, the guide mechanism 7 includes a sliding bar 701 and a mounting bracket 702, the sliding bar 701 is disposed on the main table 102 and extends along a first direction, the mounting bracket 702 is slidably connected to the sliding bar 701, and the detecting member 2 is detachably connected to the mounting bracket 702;

guide mechanism 7 is used for guiding detection piece 2 and follows the first direction and detect the product 5 that awaits measuring, wherein, in order to more enough better sliding connection install the mounting bracket 702 that detects piece 2, the quantity of slide bar 701 is two and is located the both sides of base 101 respectively, mounting bracket 702 slidable ground connects in two slide bars 701, two slide bars 701 can guide mounting bracket 702 better and follow the first direction on slide bar 701 and remove for mounting bracket 702 more stable drive detects piece 2 and removes.

Referring to fig. 1 and 2, it can be seen that the present disclosure is directed to a supporting structure for supporting the guiding mechanism 7, which is a supporting manner of an axle bracket, the axle bracket is made of 4 same types, and is made of a material with high strength and less deformation, such as stainless steel or aluminum alloy, the axle bracket has a screw hole for fixing with the main table-board 102, and has a structure for clamping and fixing the sliding rod 701, the requirement on the height precision of the axle bracket is high, it is required to ensure the height consistency after assembly, that is, it is ensured that the two axles are on the same plane after the assembly, and of course, the position can be finely adjusted by a gasket after the assembly.

Adopt slidable clearance fit between mounting bracket 702 and the slide bar 701, can guarantee the position precision simultaneously again, steady one-way motion is fixed with the axle sleeve structure in the mounting bracket 702, and the axle sleeve adopts the copper product, and wear resistance is better. The mounting frame 702 can be fastened with the detecting member 2 by screws with screw holes.

The specific implementation process of the inspection device in the disclosure is as follows: firstly, the detection piece 2 is pushed to the first side of the placing position, the product 5 to be detected is placed on the placing position 1011, after the product 5 to be detected is placed, a detection person carries out visual observation to judge whether the product is an obvious unqualified product or not, the product is classified after the judgment, the obvious unqualified product is placed independently, and the detection piece 2 is not needed to be used for detection;

when the judgment cannot be carried out through naked eyes, the detection piece 2 is used for detection, a detection person pulls the detection piece 2, so that the detection piece 2 moves towards the reference part 1012, namely the mounting frame 702 connected to the sliding rod 701 in a sliding manner is moved from one end of the sliding rod 701 to the other end of the sliding rod 701, along with the movement of the detection piece 2, the lower surface of the detection piece 2 gradually passes through the upper surface of the product 5 to be detected, and when the product 5 to be detected moves, the product 5 to be detected is indicated to be an unqualified product;

when the whole moving process of the detecting member 2 is finished, the position between the product 5 to be detected and the reference part 1012 is not changed relative to the position before the detection, which indicates that the product 5 to be detected is a qualified product.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. An inspection device for inspecting the profile of a product to be inspected, the inspection device comprising:

the workbench is provided with a placing position for placing a product to be tested, and the surface contour of the placing position is consistent with the lower surface contour of a standard product; and

detection mechanism, include along the movably setting of first direction detection piece on the workstation, detection piece is located place the position top and with place and form between the position and be used for placing the space of placing of awaiting measuring the product, the lower surface of detection piece has the detection portion, this detection portion in the extending direction of the contour line of projection on the first direction with standard product places upper surface when placing the position is parallel in the extending direction of the contour line of projection on the first direction, with through detection piece edge the removal of first direction detects the profile degree of awaiting measuring the product.

2. The inspection device of claim 1, wherein the table comprises a base and a main table top;

the base is detachably connected to the main table top, and the placement position is formed on the upper surface of the base;

the main table top is provided with a guide mechanism which is detachably connected with the detection piece and used for guiding the detection piece to move along the first direction.

3. The testing device according to claim 2, wherein the placement site has a first side and a second side opposite in a first direction and a third side and a fourth side opposite in a second direction, the first direction being perpendicular to the second direction and both being parallel to the horizontal direction, the base being provided with a first positioning structure at the first side and a second positioning structure at the third side and/or the fourth side.

4. The testing device of claim 3, wherein the first and/or second locating structures comprise at least one locating pin.

5. A testing device according to claim 3, wherein said base is provided with a reference portion for detecting displacement of a product to be tested located on said placement site relative to said reference portion when said detecting member is moved in a first direction.

6. The inspection device of claim 5, wherein the reference portion is configured as a reference line, the placement site is located between the reference line and the first positioning structure, and the reference line extends in a direction parallel to a contour line of a lower side edge of the standard product that is adjacent to the second side when the standard product is placed at the placement site; alternatively, the first and second electrodes may be,

the reference part is constructed to be inwards concave in the groove of the base, the placing position is located between the groove and the first positioning structure, and the extending direction of the groove is parallel to the contour line of the lower side edge of the second side when the standard product is placed at the placing position.

7. The inspection device of claim 3, wherein the base is provided with a positioning portion, the inspection piece is provided with a positioning engagement portion adapted to the positioning portion, and the positioning portion and the positioning engagement portion are configured to position the inspection piece relative to the base in the second direction.

8. The inspection device according to claim 7, wherein shoulders are formed at both ends of the base opposite in the second direction, the placement location is located between the two shoulders, and the two shoulders are the positioning portions;

the detection part is constructed as a detection plate extending along the vertical direction, two opposite ends of the detection plate along the second direction are respectively provided with an inverted L-shaped positioning groove matched with the shoulder, the detection part is positioned between the two positioning grooves, and the two positioning grooves are positioning matching parts.

9. The testing device of any one of claims 3-8, wherein the guide mechanism comprises a slide bar disposed on the main deck and extending in a first direction, and a mounting bracket slidably coupled to the slide bar, the test element being removably coupled to the mounting bracket.

10. The testing device of claim 9, wherein said slide bars are two in number and located on either side of said base, said mounting bracket being slidably connected to both of said slide bars.

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