CN212645625U

CN212645625U - Detection device

Info

Publication number: CN212645625U
Application number: CN202020995861.9U
Authority: CN
Inventors: 陈启立
Original assignee: Shenzhen Yuzhan Precision Technology Co ltd
Current assignee: Fulian Yuzhan Technology Shenzhen Co Ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-03-02
Anticipated expiration: 2030-06-03

Abstract

The utility model provides a detection device for the size of the work piece of making by conducting material is detected. The detection device comprises a workbench, and a fixing mechanism and a detection mechanism which are arranged on the workbench. The fixing mechanism comprises a supporting seat arranged on the workbench and used for fixing the workpiece. The detection mechanism detects the size of the workpiece and outputs a detection result including an electrically conductive state indicative of size information of the workpiece. This detection device reduces the area of contact with the work piece through detecting the head touching work piece, avoids the work piece to take place to warp, can promote the detection accuracy degree, detects the simple operation simultaneously, easily observes the testing result, need not operating personnel and spends a lot of time carrying out the testing operation and observe the testing result, can effectively promote the detection efficiency of work piece.

Description

Detection device

Technical Field

The utility model relates to a product detection technical field especially relates to a detection device.

Background

In the existing workpiece detection process, whether the size of the workpiece is qualified or not is mostly detected by formulating a corresponding detection tool. When the workpiece is detected, the fixture is used for inserting the workpiece into the detection tool, the workpiece can indicate that the product is qualified through the detection tool, and the workpiece cannot indicate that the product is unqualified if the workpiece cannot pass through the detection tool. However, for thin products, due to the clamping of the clamp and the large-area contact with the checking fixture, the products are easy to deform, and the detection accuracy is affected. For example, when the size of the product is detected to be smaller than the lower size limit, the product may become smaller after being bent and deformed during detection, and the original size of the product is larger than the upper size limit. In addition, whether the product can be inserted into the checking fixture or not is directly observed by human eyes, so that the labor intensity of operators is easily increased, and the detection efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a detection apparatus, which is aimed at improving the accuracy and efficiency of product detection.

The application discloses a detection device for detecting the size of a workpiece made of a conductive material, which comprises a workbench, a fixing mechanism and a detection mechanism, wherein the fixing mechanism and the detection mechanism are arranged on the workbench,

the fixing mechanism comprises a supporting seat, and the supporting seat is arranged on the workbench and used for fixing the workpiece;

the detection mechanism comprises at least one detection unit, each detection unit comprises a base, a detection head and a detection circuit, and the base is arranged on the workbench; the detection head is made of a conductive material and is connected to the base, the vertical distance between the detection head and the workbench can be adjusted to be a preset distance, the detection head can move to the position near the support seat along with the base on the workbench so as to detect the size relationship between the vertical distance between a workpiece on the support seat and the workbench and the preset distance, and generate a detection signal representing the size relationship; the detection circuit is arranged in the base, one detection end of the detection circuit is electrically connected to the detection head through the base, the other detection end of the detection circuit is electrically connected to the workpiece through the fixing mechanism, and the detection circuit is used for receiving a detection signal of the detection head and outputting a detection result according to the detection signal, wherein the detection result comprises an electric conduction state capable of representing size information of the workpiece.

In at least one embodiment, the detection head comprises a connecting frame, the connecting frame is provided with a connecting frame body, a through hole arranged on the connecting frame body and a fastening piece which can be tightly connected with the connecting frame body, the detection head is arranged on the base through the connecting frame body, and the preset distance is adjusted through the matching of the through hole and the fastening piece.

In at least one embodiment, the detection circuit includes: the power supply is arranged on the base, one detection end of the power supply is electrically connected with the detection head through the base, and the other detection end of the power supply is electrically connected with the workpiece through the fixing mechanism; an indicator light electrically connected to the power source to visually indicate a detection result of the detection circuit.

In at least one embodiment, the securing mechanism further comprises: the gland is detachably arranged on the supporting seat and used for compressing the workpiece.

In at least one embodiment, the securing mechanism further comprises: and the locking mechanism is connected with and fixes the supporting seat and the gland.

In at least one embodiment, the detection device further comprises: the correcting mechanism is provided with a correcting body and a correcting head, the correcting body is fixed on the workbench, the correcting head is arranged on the correcting body and protrudes out of the workbench, and the correcting head is used for adjusting the vertical distance between the detecting head and the workbench to be the preset distance.

In at least one embodiment, the detection device further comprises: the zero-resetting mechanism is detachably arranged on the workbench and used for resetting the correcting mechanism to zero, so that the vertical distance between the detection head and the workbench is adjusted to be the preset distance by the zero-resetting correcting mechanism.

In at least one embodiment, the zeroing mechanism has a zeroing surface, the zeroing mechanism is detachably disposed on the worktable in a manner that the zeroing surface faces the detection head, and the correction mechanism performs zeroing relative to the zeroing surface.

In at least one embodiment, the detection mechanism includes at least two of the detection units, and a vertical distance between the detection head of one of the at least two detection units and the table is adjusted to be different from a vertical distance between the detection head of the other detection unit and the table.

In at least one embodiment, a vertical distance between the detection head of one of the at least two detection units and the table is a sum of a lower dimension limit of the workpiece and a vertical distance between the support base and the table, and a vertical distance between the detection head of the other detection unit and the table is a sum of an upper dimension limit of the workpiece and a vertical distance between the support base and the table.

In the above-provided inspection apparatus, the fixing mechanism fixes the workpiece, and the inspection mechanism is movable on the table via the base to inspect the size of the workpiece and output an inspection result including an electrical conduction state indicative of size information of the workpiece. This detection device reduces the area of contact with the work piece through detecting the head touching work piece, avoids the work piece to take place to warp, can promote the detection accuracy degree, detects the simple operation simultaneously, easily observes the testing result, need not operating personnel and spends a lot of time carrying out the testing operation and observe the testing result, can effectively promote the detection efficiency of work piece.

Drawings

FIG. 1 illustrates a perspective view of a detection device in one embodiment.

Fig. 2 illustrates an exploded view of the securing mechanism of fig. 1.

Fig. 3 illustrates an exploded view of the first detection unit in fig. 1.

FIG. 4 illustrates a detection flow diagram of a detection device in an embodiment.

Description of the main elements

Detection device 100

Working table 10

Platform 11

Contact surface 111

Opening 112

Supporting feet 12

Fixing mechanism 20

Support base 21

Gland 22

Locking piece 23

Locking stud 231

Locking block 232

First connecting member 24

Second connecting member 25

Pin 26

Detection mechanism 30

First detecting unit 31

Second detecting unit 32

Base 311

Bottom plate 3111

Insulating member 3112

Third connector 3113

Fourth connecting part 3114

Detection head 312

Connecting frame 3121

Connecting frame body 31211

Through hole 31212

Fastener 31213

Fastening hole 31214

Detection rod 3122

Detection circuit 313

Power source 3131

Indicator light 3132

Elastic piece 3133

Switch 3134

Straightening mechanism 40

Correcting body 41

Correction head 42

Fixing block 43

Return-to-zero mechanism 50

First zeroing block 51

First surface of return to zero 511

Second zeroing block 52

Second return-to-zero surface 521

Workpiece 200

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that 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. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "rear," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 illustrates a perspective view of a detection apparatus 100 in an embodiment, the detection apparatus 100 being used for detecting the size of a workpiece 200 made of a conductive material. The detection device 100 detects the point contact with the workpiece 200, and the point contact generates a small force and hardly causes the workpiece 200 to deform. In this way, the dimension of the workpiece 200 detected by the detection device 100 is the original dimension of the workpiece 200, and is not the dimension of the workpiece 200 after deformation, for example, the dimension becomes smaller after bending deformation or the dimension becomes larger after stretching deformation, and therefore the detection of the dimension of the workpiece 200 by the detection device 100 has high detection accuracy. The detection device 100 can visually indicate the detection result, so that the operator can conveniently observe the detection result, the labor intensity is reduced, and the detection efficiency is high. In particular, the inspection apparatus 100 is suitable for inspecting the size of a workpiece 200 made of a thin material.

As shown in fig. 1, the detection device 100 includes a table 10, and a fixing mechanism 20 and a detection mechanism 30 provided on the table 10. The fixing mechanism 20 includes a support base 21, and the support base 21 is fixed on the worktable 10 and used for fixing the workpiece 200. The detection mechanism 30 includes at least one detection unit. In one embodiment, the inspection mechanism 30 may include one inspection unit to inspect one inspection site of the workpiece 200 or inspect a plurality of inspection sites of the workpiece 200 a plurality of times. In another embodiment, the inspection mechanism 30 may include two or more inspection units to respectively inspect two or more inspection sites of the workpiece 200. It will be appreciated that the number of detection units may be selected by the operator according to the actual requirements. The detection mechanism 30 in the embodiment of fig. 1 includes a first detection unit 31 and a second detection unit 32, and the first detection unit 31 and the second detection unit 32 have the same configuration, and the first detection unit 31 will be described as an example below.

The first detection unit 31 includes a base 311, a detection head 312, and a detection circuit 313. The base 311 is provided on the table 10. The detection head 312 is attached to the base 311 and is made of a conductive material, such as iron, copper, etc. The vertical distance between the inspection head 312 and the worktable 10 is adjustable to a predetermined distance, and the inspection head can move on the worktable 10 to the vicinity of the supporting base 21 along with the base 311 to inspect the relationship between the vertical distance from the workpiece 200 on the supporting base 21 to the worktable 10 and the predetermined distance, and generate an inspection signal indicating the relationship. The detecting circuit 313 is disposed in the base 311, one detecting end of the detecting circuit 313 is electrically connected to the detecting head 312 through the base 311, and the other detecting end of the detecting circuit 313 is electrically connected to the workpiece 200 through the fixing mechanism 20, and is configured to receive a detecting signal of the detecting head 312 and output a detecting result according to the detecting signal. The detection result includes an electrical conduction state that can indicate the size information of the workpiece 200.

It should be noted that the detection circuit 313 preferably employs weak current detection which is not harmful or has negligible harm to human body. Further, the state of the detection circuit 313 may be divided into an initial state and a detection state according to the detection process of the detection circuit 313. In the initial state, the detection head 312 and the workpiece 200 are respectively connected to a corresponding detection end of the detection circuit 313, and the two detection ends are not close to each other, so that the detection head 312 and the workpiece 200 are not electrically conducted. In the detecting state, the detecting head 312 moves along with the base 311 to the side of the supporting base 21 on the table 10 to touch the workpiece 200 on the supporting base 21, and detects the size of the workpiece 200 according to whether the workpiece 200 is touched, that is, whether the workpiece 200 is electrically conducted.

Specifically, in the initial state, the detection circuit 313 may be powered on or not powered on. In this state, one detection end of the detection circuit 313 is electrically connected to the detection head 312 via the base 311, and the other detection end of the detection circuit 313 is electrically connected to the workpiece 200 via the fixing mechanism 20. The detector head 312 is spaced a distance from the workpiece 200 to ensure that the detector head 312 and the workpiece 200 do not contact each other, i.e., neither is electrically conductive regardless of whether the detection circuit 313 is powered. In the detection state, the detection circuit 313 is powered on. In this state, the inspection head 312, whose vertical distance from the table 10 is adjusted to a predetermined distance, moves on the table 10 to the vicinity of the support base 21 along with the base 311 to inspect the relationship between the vertical distance from the workpiece 200 on the support base 21 to the table 10 and the predetermined distance, which corresponds to the lower limit of the dimension of the workpiece 200. In the case that the vertical distance is smaller than the predetermined distance, the detection head 312 cannot touch the workpiece 200, so that the detection head 312 and the workpiece 200 are still not electrically connected, which means that the size of the workpiece 200 is smaller than the lower size limit, i.e. the size requirement is not satisfied. On the contrary, in the case that the vertical distance is greater than or equal to the preset distance, the detection head 312 can touch the workpiece 200, so that the detection head 312 and the workpiece 200 are electrically conducted, which means that the size of the workpiece 200 is greater than or equal to the lower size limit, that is, the size requirement is satisfied. The detection circuit 313 can therefore detect whether the size of the workpiece 200 meets the requirement of being greater than or equal to the lower limit of the size. However, it is understood that the detection circuit 313 may also detect whether the size of the workpiece 200 satisfies a requirement smaller than the upper limit of the size by adjusting the preset distance to correspond to the upper limit of the size of the workpiece 200.

In the application, the detection device 100 detects the workpiece 200 through the mutual cooperation between the fixing mechanism 20 and the detection mechanism 30 and the workbench 10, and the detection head 312 touches the workpiece 200, so that the contact area between the detection mechanism 30 and the workpiece 200 is reduced, the probability of deformation of the workpiece 200 is reduced, the situations of collision and scratching of products in the manual operation process are avoided, the labor intensity of an operator is reduced, and the detection efficiency is improved.

In the above embodiment, the detection head 312 needs to move one or more times in the detection state, and the movement may cause the preset vertical distance between the detection head 312 and the worktable 10 to vary, resulting in inaccurate detection. Accordingly, in one embodiment, as shown in FIG. 1, the sensing device 100 further includes a corrective mechanism 40. The correcting mechanism 40 includes a correcting body 41 and a correcting head 42 provided to protrude from the correcting body 41. The correcting body 41 is fixed on the worktable 10 and can display the reading of the correcting degree of the correcting head 42 so as to cooperate with the correcting head 42 to adjust the vertical distance between the detecting head 312 and the worktable 10 to a preset distance. Specifically, the corrective body 41 is provided at an edge position of the table 10. Further, an opening 112 is opened at an edge position of the worktable 10, and the correcting body 41 is located at the position of the opening 112. Further, the correction body 41 is located below the opening 112 of the table 10, and the correction head 42 is located above the opening 112 of the table 10. As an example, the corrective mechanism 40 is a dial gauge. It is understood that in other embodiments, the orthotic device 40 may alternatively have other configurations with equal effectiveness or functionality.

Further, the straightening mechanism 40 further includes a fixing block 43, and the fixing block 43 is disposed at the position of the opening 112. The correcting body 41 is fixedly connected to the table 10 via a fixing block 43, and the correcting head 42 protrudes from the table 10 through the fixing block 43.

Typically, each time the corrective mechanism 40 is used, it is also zeroed in order to ensure that the zero position of the corrective mechanism 40 is accurate. Thus, in one embodiment, as shown in FIG. 1, the sensing device 100 includes a zeroing mechanism 50 in addition to the corrective mechanism 40. The zeroing mechanism 50 is detachably arranged on the workbench 10 and is used for zeroing the correcting mechanism 40, so that the distance between the detection head and the workbench 10 is adjusted to be a correct preset distance by the zeroing correcting mechanism 40. Further, the zeroing mechanism 50 has a zeroing surface, and the zeroing mechanism 50 is detachably disposed on the worktable 10 in such a manner that the zeroing surface faces the inspection head, so that the correcting mechanism 40 is zeroed with respect to the zeroing surface.

Specifically, based on the embodiment in which the detection mechanism 30 includes the first detection unit 31 and the second detection unit 32, the zeroing mechanism 50 includes a first zeroing block 51 and a second zeroing block 52. The first return-to-zero block 51 and the second return-to-zero block 52 are substantially identical in structure, and both are substantially U-shaped block structures. The first zeroing block 51 and the second zeroing block 52 are disposed at the position of the opening 112, and the U-shaped opening faces the straightening mechanism 40.

First return-to-zero block 51 includes a first return-to-zero surface 511 and second return-to-zero block 52 includes a second return-to-zero surface 521. The first return-to-zero surface 511 and the second return-to-zero surface 521 are surfaces that correspond to the correction mechanism 40, respectively.

In one embodiment, the distance between the table 10 and the first zeroing plane 511 is the sum of the vertical distance from the support base 21 of the fixing mechanism 20 to the table 10 and the lower dimension limit of the workpiece 200. The distance between the table 10 and the second zero-return surface 521 is the sum of the vertical distance from the support base 21 of the fixing mechanism 20 to the table 10 and the upper limit of the size of the workpiece 200. Thus, the first and second return-to-zero

surfaces

511 and 521 have different vertical distances from the table 10.

Some embodiments of the table 10, the fixing mechanism 20, and the detecting mechanism 30 of the detecting device 100 will be described below with reference to the drawings.

First, the structure of the table 10 will be described with reference to fig. 1. The table 10 comprises a platform 11 and supporting feet 12. The platform 11 is used for supporting the fixing mechanism 20 and the detecting mechanism 30. Further, the platform 11 may be made in whole or in part of an electrically conductive material, for example a metallic material such as iron, copper, etc. When the platform 11 is made of a conductive material as a whole, the detection head 312 of the detection mechanism 30 can be arbitrarily moved on the platform 11. When made in part of a conductive material, the sensing head 312 of the sensing mechanism 30 only defines predetermined conductive paths on the platform 11 for movement. Here, the vertical distance between the detection head 312 and the table 10 refers to the vertical distance between the detection head 312 and the stage 11. Support feet 12 are provided at the edges of the platform 11 or other suitable locations for supporting the platform 11. In one embodiment, the platform 11 of the working platform 10 is substantially rectangular, and the working platform 10 includes four supporting legs 12, and the four supporting legs 12 correspond to corners of the platform 11 respectively.

The platform 11 is used as a reference surface for the vertical distance between the inspection head 312 and the worktable 10, however, the surface flatness of the platform 11 may change due to long-term idle or frequent use, so that when the inspection head 312 moves on the worktable 10 along with the base 311, the vertical distance between the inspection head 312 and the worktable 10 also changes, which affects the inspection accuracy. Therefore, in one embodiment, a contact surface 111 is provided on the upper end surface of the platform 11 to improve the flatness of the platform 11, and the contact surface 111 is used for arranging the fixing mechanism 20 and the detecting mechanism 30. Similarly, the contact surface 111 may be made in whole or in part of the same or different conductive material as the platform 11. When the contact surface 111 is made of a conductive material, the platform 11 may be made of a non-conductive material. In this embodiment, the perpendicular distance of the detection head 312 from the table 10 refers to the perpendicular distance of the detection head 312 from the contact surface 111.

Next, the construction of the fixing mechanism 20 will be described with reference to fig. 2. Fig. 2 illustrates an exploded view of the securing mechanism 20. As shown in fig. 2, the fixing mechanism 20 includes a support base 21, and the support base 21 is provided on the stage 11 of the table 10 shown in fig. 1, for supporting the workpiece 200. The support base 21 may be made of a conductive material or may be provided with conductive points and/or wires where it contacts the workpiece 200. Here, the detection circuit 313 may be electrically connected to the workpiece 200 via the fixing mechanism 20 by electrically connecting a detection end of the detection circuit 313 to the workpiece 200 via the support base 21 made of a conductive material, or electrically connected to the workpiece 200 via a conductive point of the support base 21 or a conductive wire built in the support base 21.

Further, the fixing mechanism 20 further includes a pressing cover 22, and the pressing cover 22 is detachably disposed on the supporting base 21 and is used for fixing the workpiece 200 on the supporting base 21. Further, the gland 22 is made of a conductive material. It is noted that the detection circuit 313 may be electrically connected to the workpiece 200 via the fixing mechanism 20 in such a manner that the detection end of the detection circuit 313 is electrically connected to the workpiece 200 via the supporting base 21 and the pressing cover 22, or via the conductive points of the supporting base 21 and the pressing cover 22 or the conductive wires built in the supporting base 21 and the pressing cover 22.

Further, the fixing mechanism 20 further includes a locking mechanism including a locking member 23, a first connecting member 24 and a second connecting member 25. The locking member 23 connects the support base 21 and the pressing cover 22 for fixing the support base 21 and the pressing cover 22 to fix the workpiece 200. The first connecting piece 24 connects the supporting base 21 and the pressing cover 22 together, so that the locking piece 23 can be conveniently locked and fixed. The second connecting piece 25 connects the supporting seat 21 and the pressing cover 22 with the platform 11, and limits the supporting seat 21 and the pressing cover 22 to prevent the supporting seat 21 and the pressing cover 22 from moving.

Specifically, retaining member 23 includes a retaining stud 231 and a retaining block 232. The locking stud 231 penetrates the support base 21 and the gland 22 and is screwed with the support base 21 and the gland 22. The locking block 232 is rotatably disposed on the gland 22 and corresponds to the locking stud 231, and the two are connected by the pin 26. When the supporting seat 21 and the gland 22 need to be locked, the locking block 232 is rotated, the locking block 232 drives the locking stud 231 to rotate, the locking stud 231 moves upwards relative to the supporting seat 21, and the supporting seat 21 and the gland 22 are locked. If the support seat 21 and the pressing cover 22 need to be separated, the locking block 232 is rotated in the opposite direction. The locking member 23 may be replaced with other structures to achieve the locking effect.

It will be appreciated that the retaining member 23 may be omitted if the gland 22 itself is capable of securing the workpiece 200 to the support base 21.

Next, the configuration of the detection mechanism 30 will be described with reference to fig. 3. Before specifically describing the structure of the detection mechanism 30, it should be noted that the description will be made here with an embodiment in which the detection mechanism 30 includes two detection units, i.e., a first detection unit 31 and a second detection unit 32, and uses both of them to detect whether the size of the workpiece 200 satisfies the lower limit of the size or more and the lower limit of the size or less. Specifically, the vertical distance between the detection head of the first detection unit 31 and the worktable 10 is a first preset distance for detecting the lower dimension limit of the workpiece 200, and the vertical distance between the second detection unit 32 and the worktable 10 is a second preset distance greater than the first preset distance for detecting the upper dimension limit of the workpiece 200. However, it is understood that in other embodiments, the detection mechanism 30 may include only one detection unit, i.e., the first detection unit 31 or the second detection unit 32, and use it to detect the size of the workpiece 200. Specifically, the vertical distance between the detection head of the first detection unit 31 or the second detection unit 32 and the worktable 10 is adjusted to a first preset distance to detect the lower size limit of the workpiece 200, and the vertical distance between the detection head and the worktable 10 is adjusted to a second preset distance to detect the upper size limit of the workpiece 200.

As shown in fig. 3, the base 311 includes a bottom plate 3111 and an insulating member 3112. The base plate 3111 is provided on and movable on the table 10 shown in fig. 1. The insulating member 3112 is disposed on the bottom plate 3111 and is used for carrying the detecting head 312, so that the detecting head 312 moves on the platform 11 along with the bottom plate 3111 through the insulating member 3112. Further, the base 311 further includes a third connector 3113. The insulating member 3112 is fixedly provided on the base plate 3111 through a third connecting member 3113, so that the detection head 312 stably and reliably moves with the base plate 3111 through the insulating member 3112. In one embodiment, the insulator 3112 is further configured to accommodate the detection circuit 313 to insulate the detection circuit 313 from the outside, thereby ensuring safe operation of the detection circuit 313. Further, the base 311 further includes a fourth connector 3114. The fourth connector 3114 is made of a conductive material and is built in the insulator 3112. Here, the detection circuit 313 may be electrically connected to the detection head 312 through the base 311 in such a manner that the detection end of the detection circuit 313 is electrically connected to the detection head 312 through the fourth connector 3114.

Detection head 312 includes attachment frame 3121. The test head 312 is connected to the insulator 3112 by its own connecting bracket 3121. The link 3121 has a link body 31211, a through hole 31212 provided in the link body 31211, and a fastener 31213 fastenably connected to the link body 31211. The link 3121 is connected to the insulating member 3112 through its own link body 31211, and adjusts a vertical distance from the platform 11 by cooperation of its own through hole 31212 and the fastening member 31213.

The sensing head 312 also includes a sensing stem 3122. The inspection head 312 inspects the size of the workpiece 200 through its own inspection bar 3122. The sensing lever 3122 can be inserted into the through hole 31212 of the link body 31211 in a screw-fit manner and moved up and down within the through hole 31212 by being rotated to adjust a vertical distance from the platform 11. When the vertical distance is adjusted to a preset distance, the fastening member 31213 is inserted into the fastening hole 31214 of the link body 31211 adjacent to the through hole 31212 to fasten the sensing bar 3122, ensuring that the preset distance does not change during sensing. In one embodiment of the present application, the detection circuit 313 further includes a power source 3131 and an indicator light 3132. The power source 3131 is provided on the bottom plate 3111 as a power supply source of the detection circuit 313. In one embodiment, the power source 3131 is a coin cell battery, a removable battery, or other power source. One sensing end of power source 3131 is electrically connected to sensing head 312 via base 311, e.g., via fourth connection 3114 and sensing bar 3122. The other sensing end of the power source 3131 is electrically connected to the workpiece 200 via a fixing mechanism 20, such as a support base 21. The indicator light 3132 is electrically connected to the power source 3131, for example, connected in series between one detection end of the power source 3131 and the detection head 312, to visually indicate a detection result of the detection circuit 313. In one embodiment, the detection circuit 313 may represent the size information of the workpiece 200 by the brightness of the indicator light 3132.

Further, in one embodiment, the detecting circuit 313 further includes an elastic element 3133 disposed between the power source 3131 and the indicator light 3132 and abutting against an upper end of the power source 3131 and a lower end of the indicator light 3132, respectively, so as to ensure elastic electrical connection between the power source 3131 and the indicator light 3132. The elastic member 3133 may be made of a conductive material or a non-conductive material, but the power source 3131 and the indicator light 3132 may be electrically connected by a wire or conductor passing through the elastic member 3133, for example, the fourth connection member 3114.

In another embodiment, the detection circuit 313 further includes a switch 3134. A switch 3134 is movably disposed between the base plate 3111 and the power source 3131 for electrically connecting or disconnecting the base plate 3111 to the power source 3131. Further, the switch 3134 is made of a conductive material.

It is understood that the above components, such as the platform 11, the supporting base 21, etc., which are electrically connected to each other by being made of a conductive material, may also be made of a non-conductive material and directly electrically connected to each other by a wire.

Finally, a detection flow chart of the detection apparatus 100 according to an embodiment of the present application will be briefly described with reference to fig. 4. In the present embodiment, the detection mechanism 30 of the detection apparatus 100 includes two detection units, a first detection unit 31 and a second detection unit 32. The detection circuit of the first detection unit 31 and the detection circuit of the second detection unit 32 each include a switch. Whether the size of the workpiece 200 satisfies the size lower limit or more is detected using the first detection unit 31, and whether the size of the workpiece 200 satisfies the size lower limit or less is detected using the second detection unit 32. As shown in fig. 4, the operation of the inspection apparatus 100 in inspecting the workpiece 200 is as follows:

the workpiece 200 is mounted on the fixing mechanism 20.

The first detection unit 31 and the second detection unit 32 are moved to the edge position of the workpiece 200, and the switch (e.g., the switch 3134) of each detection circuit of the first detection unit 31 and the second detection unit 32 is switched to power up the respective detection circuit (e.g., the detection circuit 313) and enter a detection state, so as to start detecting the workpiece 200.

If the indicator light of the first detecting unit 31 is on, it indicates that a communicating loop is formed between the first detecting unit 31, the platform 11, the fixing mechanism 20 and the workpiece 200, which means that the size of the workpiece 200 is greater than or equal to the lower size limit. The indicator light of the second detection unit 32 is not on, which indicates that the size of the workpiece 200 is smaller than the upper limit size. Therefore, the workpiece 200 is dimensionally acceptable.

If the indicator lamps of the first detection unit 31 and the second detection unit 32 are both on or not on, the size of the workpiece 200 is not qualified.

It is understood that the electricity used by the detection apparatus 100 may be weak electricity, and has no influence on the human body. The detected workpiece 200 may be a frame or other structure of an electronic product. And the inspection apparatus 100 can inspect the dimensions of the workpiece 200 at different locations.

In summary, the detecting device 100 provided in the above embodiments can contact the workpiece 200 sequentially or simultaneously by keeping the first detecting unit 31 and the second detecting unit 32 at different preset distances from the stage 11. If one of the detecting units corresponding to the lower size limit forms an electrically conductive loop with the platform 11, the fixing mechanism 20 and the workpiece 200, the indicator lamp is turned on, which means that the size of the workpiece 200 meets the requirement equal to or greater than the lower size limit, and another detecting unit corresponding to the upper size limit does not form an electrically conductive loop with the platform 11, the fixing mechanism 20 and the workpiece 200, the indicator lamp is turned off, which means that the size of the workpiece 200 meets the requirement smaller than the upper size limit. Therefore, whether the workpiece 200 is good or not can be easily known by the indication result of the on and off of the indicator lamp. The workpiece 200 size detection by using the detection device 100 can reduce the labor intensity of operators, improve the detection efficiency and prevent the operators from damaging the workpiece 200 in the detection process. If different workpieces are to be inspected, the inspection mechanism 30 can still be used, and the preset distances between the first inspection unit 31 and the second inspection unit 32 and the platform 11 are reset according to the size of the workpiece 200. The detection device 100 reduces the contact area with the workpiece 200 by contacting the workpiece 200 with the detection head, thereby preventing the workpiece 200 from deforming. In this way, the dimension of the workpiece 200 detected by the detection apparatus 100 is the original dimension of the workpiece 200, and is not the dimension of the workpiece 200 after deformation, for example, the dimension after bending deformation becomes smaller or the dimension after stretching deformation becomes larger, thereby improving the detection accuracy. Meanwhile, the operation is convenient and fast, and the application range of the detection device 100 is expanded.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. A detection device for detecting the size of a workpiece made of a conductive material is characterized by comprising a workbench, a fixing mechanism and a detection mechanism, wherein the fixing mechanism and the detection mechanism are arranged on the workbench,

2. The testing device of claim 1, wherein the testing head comprises a connecting frame having a connecting frame body, a through hole formed in the connecting frame body, and a fastening member fastenable to the connecting frame body, wherein the testing head is mounted on the base through the connecting frame body, and the predetermined distance is adjusted by the engagement of the through hole and the fastening member.

3. The detection apparatus of claim 1, wherein the detection circuit comprises: the power supply is arranged on the base, one detection end of the power supply is electrically connected with the detection head through the base, and the other detection end of the power supply is electrically connected with the workpiece through the fixing mechanism; an indicator light electrically connected to the power source to visually indicate a detection result of the detection circuit.

4. The detection device of claim 1, wherein the securing mechanism further comprises: the gland is detachably arranged on the supporting seat and used for compressing the workpiece.

5. The detection device of claim 4, wherein the securing mechanism further comprises: and the locking mechanism is connected with and fixes the supporting seat and the gland.

6. The sensing device of claim 1, further comprising: the correcting mechanism is provided with a correcting body and a correcting head, the correcting body is fixed on the workbench, the correcting head is arranged on the correcting body and protrudes out of the workbench, and the correcting head is used for adjusting the vertical distance between the detecting head and the workbench to be the preset distance.

7. The sensing device of claim 6, further comprising: the zero-resetting mechanism is detachably arranged on the workbench and used for resetting the correcting mechanism to zero, so that the vertical distance between the detection head and the workbench is adjusted to be the preset distance by the zero-resetting correcting mechanism.

8. The inspection device of claim 7, wherein said zeroing mechanism has a zeroing surface, said zeroing mechanism being removably mounted to said table with said zeroing surface facing said inspection head, said leveling mechanism zeroing relative to said zeroing surface.

9. The inspection apparatus according to claim 1, wherein said inspection mechanism includes at least two of said inspection units, and a vertical distance between the inspection head of one of the at least two of said inspection units and said table is adjusted to be different from a vertical distance between the inspection head of the other of said inspection units and said table.

10. The inspection apparatus of claim 9, wherein the vertical distance between the inspection head of one of at least two of said inspection units and said table is the sum of the lower dimension limit of said workpiece and the vertical distance between said support base and said table, and the vertical distance between the inspection head of the other inspection unit and said table is the sum of the upper dimension limit of said workpiece and the vertical distance between said support base and said table.