Deformation and elastic force automatic detection equipment applied to conductive elastic sheet on workpiece

Abstract

The utility model relates to the technical field of elasticity detection equipment, in particular to deformation and elasticity automatic detection equipment applied to a conductive elastic sheet on a workpiece, which comprises a substrate, and a lifting mechanism, a first light source assembly, a second light source assembly, a camera and a workpiece positioning jig are arranged on the substrate. The first light source assembly, the workpiece positioning jig, the second light source assembly and the camera are sequentially arranged from front to back, images obtained after pressing deformation of the conductive elastic pieces are collected through the camera to be analyzed, and when two or more conductive elastic pieces are arranged on a workpiece and all the conductive elastic pieces are pressed down by the dynamometer, the conductive elastic pieces are located on the workpiece. And if the deformation condition of one conductive elastic sheet does not fall into the preset deformation degree range, the conductive elastic sheet is also considered to be unqualified, and compared with the prior art that the deformation degree is judged by adopting the pressing distance of a dynamometer, the detection device can detect at least more than two conductive elastic sheets at the same time more accurately and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of elasticity detection equipment, in particular to an automatic detection equipment for deformation and elasticity of a conductive spring sheet on a workpiece. Background Art

[0002] Conductive springs are assembled on mechanical switches such as triggers and buttons or similar workpieces. Such conductive springs realize the conduction of the circuit through the operation of the mechanical structure, so the quality of its conductive contact performance is particularly important. After processing such workpieces in the prior art, the workpieces need to be placed on special testing equipment to test the deformation and elasticity of the conductive springs, so as to ensure that the conductive springs equipped on the produced workpieces have sufficient physical properties;

[0003] However, the existing elasticity detection equipment basically determines the physical properties of the conductive spring piece by using a pressure sensor to press down the conductive spring piece to generate a reaction force and a pressing distance. However, in the case where there is more than one conductive spring piece on some workpieces, such as Figure 1 As shown, it is impossible to detect the physical properties of a single conductive spring at a time, and pressing down multiple conductive springs can only detect their average physical properties. If there is a conductive spring that is unqualified, it cannot be identified. Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] A deformation and elastic force automatic detection device for a conductive spring on a workpiece comprises a substrate, on which a lifting mechanism, a first light source assembly, a second light source assembly, a camera and a workpiece positioning fixture are arranged. The first light source assembly, the workpiece positioning fixture, the second light source assembly and the camera are arranged in sequence from front to back. The lifting mechanism is erected above the workpiece positioning fixture. The lifting mechanism is power-connected to a force gauge docked to the workpiece positioning fixture, and the lifting mechanism is arranged to avoid air so that the second light source assembly and the camera can act on the workpiece positioning fixture. The second light source assembly is a ring structure, and the camera acts on the workpiece positioning fixture along the middle of the second light source assembly.

[0006] Preferably, the lifting mechanism includes a fixed bracket and a linear module installed on the fixed bracket, the fixed bracket includes a fixed plate and vertical plates installed on both sides of the fixed plate, the vertical plate is fixedly installed on the base plate, the linear module is installed on the fixed plate, the force meter is connected to the movable end of the linear module, and the lower end of the fixed plate is spaced apart from the base plate, so that the second light source assembly and the camera can act on the workpiece positioning fixture along the bottom of the fixed plate.

[0007] Preferably, an I-shaped support is fixedly mounted on the movable end of the linear module, and the force measuring device is mounted in front of the I-shaped support.

[0008] Preferably, the workpiece positioning jig includes a jig body and two limit members docked on both sides of the jig body, the jig body is provided with a workpiece positioning groove, a blocking portion is provided at the rear end of the limit member, the jig body abuts between the two limit members and is abutted and positioned by the blocking portion, a limit groove extending to the blocking member is provided on the limit member, a limit strip docked with the limit groove is provided around the jig body, a pin hole penetrating the jig body is also provided on the limit member, and the pin hole is used to connect the pins between the limit member and the jig body for fixed fit.

[0009] Preferably, the first light source assembly and the second light source assembly are both provided with a right-angle sheet metal part fixedly mounted on a substrate, the right-angle sheet metal part is provided with a first long hole, and the substrate is provided with a plurality of first threaded holes corresponding to the first long hole, so that the right-angle sheet metal part can be fixed on the substrate in a variably positionable manner by screw connection between the first long hole and different first threaded holes.

[0010] Preferably, a lifting plate is installed at the position of the substrate corresponding to the camera, the camera is fixedly installed on the lifting plate, a second long hole is provided on the lifting plate, and a plurality of second threaded holes corresponding to the second long hole are provided on the substrate, so that the lifting plate can be fixed on the substrate in a changeable position by screw connection between the second long hole and different second threaded holes.

[0011] Preferably, a conveyor belt mechanism is also arranged horizontally on the base plate, and multiple workpiece positioning jigs are arranged, and the multiple workpiece positioning jigs are evenly installed on the transmission end of the conveyor belt mechanism; and a positioning cylinder for positioning the workpiece positioning jig is arranged at a position directly below the corresponding force measuring device on the base plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The image of the conductive spring piece after being pressed down and deformed is collected by the camera for analysis. When there are two or more conductive spring pieces on the workpiece, when the force gauge presses down all the conductive spring pieces, if the deformation of one of the conductive spring pieces does not fall within the preset deformation range, the conductive spring piece is also considered unqualified. Compared with the prior art that uses the force gauge pressing distance to determine the deformation degree, the utility model will be able to more accurately and reliably detect at least two or more conductive spring pieces at the same time, and its detection efficiency and detection quality will be greatly improved;

[0014] The camera and the light source assembly are installed separately so that the light source assembly is close to the position of the workpiece positioning jig, and the second light source assembly is set as a ring-shaped structure so that the camera acts on the workpiece positioning jig through the middle of the second light source assembly. When performing image analysis, the analysis range can be limited by collecting the edge of the second light source assembly, thereby improving the image analysis efficiency. The first light source assembly and the second light source assembly are used to expose the workpiece near the workpiece positioning jig, so that the camera does not need to collect images in a closed environment without other light interference, so that there are no obstructions around the workpiece positioning jig, which is convenient for manually or machine to place the workpiece on the workpiece positioning jig from multiple angles.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the workpiece in the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 It is a side view structural schematic diagram of the utility model;

[0020] Figure 4 This utility model Figure 1 Schematic diagram of the structure after adding the conveyor belt mechanism;

[0021] Figure 5 It is a schematic diagram of the top view of the workpiece positioning fixture in the utility model;

[0022] Figure 6 It is a front view structural schematic diagram of the workpiece positioning fixture in the utility model;

[0023] Figure 7 It is a structural schematic diagram of the utility model before and after the force measuring device presses the conductive spring piece.

[0024] The reference numerals and names in the figures are as follows:

[0025] Conductive spring 1, workpiece 2, substrate 10, first threaded hole 11, second threaded hole 12, lifting mechanism 20, force gauge 21, linear module 22, fixing plate 23, vertical plate 24, I-shaped support 25, first light source assembly 30, right-angle sheet metal 31, first long hole 32, second light source assembly 40, camera 50, lifting plate 51, second long hole 52, workpiece positioning fixture 60, fixture body 61, limit member 62, blocking part 63, limit strip 64, pin hole 65, conveyor belt mechanism 70, positioning cylinder 71. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0027] See also Figure 1-7 In an embodiment of the utility model, a deformation and elastic force automatic detection device for a conductive spring sheet on a workpiece includes a substrate 10, on which a lifting mechanism 20, a first light source assembly 30, a second light source assembly 40, a camera 50 and a workpiece positioning fixture 60 are arranged. The first light source assembly 30, the workpiece positioning fixture 60, the second light source assembly 40 and the camera 50 are arranged in sequence from front to back. The lifting mechanism 20 is erected above the workpiece positioning fixture 60. The lifting mechanism 20 is powered and connected to a force measuring device 21 that is docked with the workpiece positioning fixture 60. The lifting mechanism 20 is arranged in an air-proof manner so that the second light source assembly 40 and the camera 50 can act on the workpiece positioning fixture 60. The second light source assembly 40 is a ring structure, and the camera 50 acts on the workpiece positioning fixture 60 along the middle of the second light source assembly 40.

[0028] In the above technical solution, the deformation analysis of the conductive spring piece 1 on the workpiece 2 is performed by using a camera 50. During the inspection, the workpiece 2 is positioned and placed on the workpiece positioning fixture 60, so that the conductive spring piece 1 is kept facing upward, and then the force gauge 21 is driven to press the conductive spring piece 1 downward with a certain force, and the deformation degree of the conductive spring piece 1 is collected by the camera 50. The collected deformation degree can be compared with the preset deformation degree range. When it meets the preset deformation degree range, the conductive spring piece 1 of the workpiece 2 is considered to be qualified. When it does not meet the preset deformation degree range, it is considered that the conductive spring piece 1 is unqualified. Qualified, need to be reworked; collect the image of the conductive spring piece 1 after being pressed down and deformed by the camera 50 for analysis. When there are two or more conductive spring pieces 1 on the workpiece 2, when the force gauge 21 presses down all the conductive spring pieces 1, if the deformation of one of the conductive spring pieces 1 does not fall within the preset deformation degree range, the conductive spring piece 1 is also regarded as unqualified. Compared with the prior art that uses the force gauge 21 to press down the distance to determine the deformation degree, the utility model will be able to more accurately and reliably detect at least two or more conductive spring pieces 1 at the same time, and its detection efficiency and detection quality will be greatly improved;

[0029] The camera 50 and the light source assembly are installed separately, so that the light source assembly is close to the position of the workpiece positioning fixture 60, and the second light source assembly 40 is set as a ring structure, so that the camera 50 acts on the workpiece positioning fixture 60 through the middle of the second light source assembly 40. When performing image analysis, the edge of the second light source assembly 40 can be collected to limit the scope of analysis, thereby improving the efficiency of image analysis, and the first light source assembly 30 and the second light source assembly 40 are used to be close to the workpiece positioning fixture 60 to expose the workpiece 2, so that the camera 50 does not need to collect images in a closed environment without other light interference, so that there is no obstruction around the workpiece positioning fixture 60, which is convenient for manually or by machine to place the workpiece 2 on the workpiece positioning fixture 60 from multiple angles;

[0030] In addition, through the positional relationship between the first light source assembly 30, the second light source assembly 40, the camera 50 and the lifting mechanism 20 and the workpiece positioning fixture 60 respectively, there will be no obstructions on both sides of the workpiece positioning fixture 60, so a conveyor belt mechanism 70 can be horizontally arranged on the substrate 10, and multiple workpiece positioning fixtures 60 are arranged, and multiple workpiece positioning fixtures 60 are evenly installed on the transmission end of the conveyor belt mechanism 70; and a positioning cylinder 71 for positioning the workpiece positioning fixture 60 is arranged at a position directly below the force gauge 21 on the substrate 10, so that the workpiece 2 can be placed on the workpiece positioning fixture 60 from the outside, and then sent to the bottom of the lifting mechanism 20 through the conveyor belt mechanism 70, so as to avoid the safety hazard of the lifting mechanism 20 pressing down on the hand during manual operation; it also makes the detection equipment more automated and flexible in application scenarios.

[0031] See also Figure 2-4 In this embodiment, based on the setting of the lifting mechanism 20, the lifting mechanism 20 includes a fixed bracket and a linear module 22 installed on the fixed bracket, the fixed bracket includes a fixed plate 23 and a vertical plate 24 installed on both sides of the fixed plate 23, the vertical plate 24 is fixedly installed on the substrate 10, the linear module 22 is installed on the fixed plate 23, the force meter 21 is connected to the movable end of the linear module 22, and the lower end of the fixed plate 23 is spaced from the substrate 10, so that the second light source assembly 40 and the camera 50 can act on the workpiece positioning fixture 60 along the bottom of the fixed plate 23; a workpiece support 25 is fixedly installed on the movable end of the linear module 22, and the force meter 21 is installed in front of the workpiece support 25, so that the fixed bracket can be kept away from both sides of the workpiece positioning fixture 60, so as to facilitate the installation of a horizontally arranged conveyor belt mechanism 70 directly below the force meter 21.

[0032] See also Figure 5-6 In this embodiment, the workpiece positioning jig 60 includes a jig body 61 and two limiting members 62 docked on both sides of the jig body 61. The jig body 61 is provided with a workpiece positioning groove (not shown in the figure), and a blocking portion 63 is provided at the rear end of the limiting member 62. The jig body 61 abuts between the two limiting members 62 and is abutted and positioned by the blocking portion 63. A limiting groove (not shown in the figure) extending to the blocking member is provided on the limiting member 62. A limiting strip 64 docked with the limiting groove is provided around the jig body 61. A pin hole 65 penetrating the jig body 61 is also provided on the limiting member 62. The pin hole 65 is used to connect the pin between the limiting member 62 and the jig body 61 for fixed cooperation. Through this arrangement, the jig body 61 can be easily replaced, so that the jig body 61 adapted to the workpiece positioning groove can be quickly replaced according to workpieces 2 of different shapes.

[0033] See also Figure 2-4 In this embodiment, the first light source assembly 30 and the second light source assembly 40 are both provided with a right-angle sheet metal part 31 fixedly mounted on the substrate 10, the right-angle sheet metal part 31 is provided with a first long hole 32, and the substrate 10 is provided with a plurality of first threaded holes 11 corresponding to the first long hole 32, so that the right-angle sheet metal part 31 can be fixed on the substrate 10 in a changeable position by screwing the first long hole 32 and different first threaded holes 11; a lifting plate 51 is installed at the position of the substrate 10 corresponding to the camera 50, and the camera 50 is fixedly mounted on the lifting plate 51, the lifting plate 51 is provided with a second long hole 52, and the substrate 10 is provided with a plurality of second threaded holes 12 corresponding to the second long hole 52, so that the lifting plate 51 can be fixed on the substrate 10 in a changeable position by screwing the second long hole 52 and different second threaded holes 12, so that the distance between the first light source assembly 30, the second light source assembly 40 and the camera 50 relative to the workpiece positioning fixture 60 is adjustable.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An automatic detection device for deformation and elastic force of a conductive spring on a workpiece, characterized in that: It includes a substrate, on which a lifting mechanism, a first light source assembly, a second light source assembly, a camera and a workpiece positioning fixture are arranged. The first light source assembly, the workpiece positioning fixture, the second light source assembly and the camera are arranged in sequence from front to back. The lifting mechanism is erected above the workpiece positioning fixture. The lifting mechanism is powered by a force gauge connected to the workpiece positioning fixture, and the lifting mechanism is arranged to avoid air so that the second light source assembly and the camera can act on the workpiece positioning fixture. The second light source assembly is a ring structure, and the camera acts on the workpiece positioning fixture along the middle of the second light source assembly.

2. The automatic detection device for deformation and elastic force of a conductive spring on a workpiece according to claim 1, characterized in that: The lifting mechanism includes a fixed bracket and a linear module installed on the fixed bracket, the fixed bracket includes a fixed plate and vertical plates installed on both sides of the fixed plate, the vertical plate is fixedly installed on the base plate, the linear module is installed on the fixed plate, the force meter is connected to the movable end of the linear module, and the lower end of the fixed plate is spaced apart from the base plate, so that the second light source assembly and the camera can act on the workpiece positioning fixture along the bottom of the fixed plate.

3. The automatic detection device for deformation and elastic force of a conductive spring applied to a workpiece according to claim 2, characterized in that: An I-shaped support is fixedly installed on the movable end of the linear module, and a dynamometer is installed in front of the I-shaped support.

4. The automatic detection device for deformation and elastic force of a conductive spring on a workpiece according to claim 1, characterized in that: The workpiece positioning jig includes a jig body and two limit members docked on both sides of the jig body, the jig body is provided with a workpiece positioning groove, a blocking part is provided at the rear end of the limit member, the jig body abuts between the two limit members and is abutted and positioned by the blocking part, a limit groove extending to the blocking member is provided on the limit member, a limit strip docked with the limit groove is provided around the jig body, a pin hole penetrating the jig body is also provided on the limit member, and the pin hole is used to connect the pin between the limit member and the jig body for fixed cooperation.

5. The automatic detection device for deformation and elastic force of a conductive spring on a workpiece according to claim 1, characterized in that: Both the first light source assembly and the second light source assembly are provided with a right-angle sheet metal part fixedly mounted on a substrate, the right-angle sheet metal part is provided with a first long hole, and the substrate is provided with a plurality of first threaded holes corresponding to the first long hole, so that the right-angle sheet metal part can be fixed on the substrate in a changeable position by screw connection between the first long hole and different first threaded holes.

6. The automatic detection device for deformation and elastic force of a conductive spring on a workpiece according to claim 1, characterized in that: A lifting plate is installed at the position of the substrate corresponding to the camera, and the camera is fixedly installed on the lifting plate. A second long hole is arranged on the lifting plate, and a plurality of second threaded holes corresponding to the second long hole are arranged on the substrate, so that the lifting plate can be fixed on the substrate in a changeable position by screw connection between the second long hole and different second threaded holes.

7. The automatic detection device for deformation and elastic force of a conductive spring applied to a workpiece according to claim 1, characterized in that: A conveyor belt mechanism is also arranged horizontally on the base plate, and a plurality of workpiece positioning jigs are arranged, and the plurality of workpiece positioning jigs are evenly installed on the transmission end of the conveyor belt mechanism; and a positioning cylinder for positioning the workpiece positioning jig is arranged at a position directly below the corresponding force measuring device on the base plate.

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