CN210487206U

CN210487206U - Key testing device

Info

Publication number: CN210487206U
Application number: CN201921477836.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Jiangsu Lidao Technology Co.,Ltd.
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-05-08
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a button testing arrangement, include: the positioning mechanism is used for positioning and clamping a workpiece with a key; the testing mechanism is arranged on one side of the positioning mechanism and comprises a testing pressure head, a pressure sensor and a distance detection assembly, wherein the pressure sensor is used for detecting the pressure exerted by the key on the testing pressure head, and the distance detection assembly is used for detecting the moving distance of the testing pressure head relative to the key; and the driving mechanism is used for driving the test pressure head to abut against the surface of the key. The key testing device can automatically test the pressure of the workpiece on the testing pressure head and the moving distance of the workpiece, and has high testing precision.

Description

Key testing device

Technical Field

The utility model belongs to the technical field of 3C product test equipment technique and specifically relates to a button testing arrangement is related to.

Background

In the assembly process of the mobile phone or the PC, the performance test of the keys on the mobile phone or the PC is required to judge whether the keys can be normally used.

At present, the key test in the industry generally adopts manual test, and the key test has the following defects:

(1) needs manual work and test software to be interactively fused, and has long test time and low efficiency.

(2) The manual test cannot ensure the stable pressure of the test pressure head, and the test precision is influenced; the existing automatic testing key device can not test keys in different shapes compatibly, and has the defects of low automation performance and poor compatibility.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main objective is overcome prior art not enough, provides a high, the high button testing arrangement of detection precision of efficiency of software testing.

A key testing device comprises a positioning mechanism, a testing mechanism and a control mechanism, wherein the positioning mechanism is used for positioning and clamping a workpiece with a key; the testing mechanism is arranged on one side of the positioning mechanism and comprises a testing pressure head, a pressure sensor and a distance detection assembly, wherein the pressure sensor is used for detecting the pressure exerted by the key on the testing pressure head, and the distance detection assembly is used for detecting the moving distance of the testing pressure head relative to the key; and the driving mechanism is used for driving the test pressure head to abut against the surface of the key.

The display component is used for displaying a pressure displacement curve graph between the pressure exerted by the key on the test pressure head and the moving distance of the key under the pressure.

Further, positioning mechanism includes the carrier platform, the adjacent both sides of carrier platform all sets firmly first locating piece, the adjacent other both sides of carrier platform all are provided with the locating component who is used for fixing a position the work piece, carrier platform upper surface is provided with the vacuum adsorption hole, the vacuum adsorption hole be used for with the work piece adsorb in carrier bench surface.

Further, the locating component comprises a second locating block and a mounting seat, wherein the mounting seat is fixedly connected with the lower surface of the carrier table, the second locating block is connected to the upper surface of the mounting seat in a sliding mode, a guide rod is fixedly arranged on the mounting seat and is connected with the second locating block in a sliding mode, a spring is sleeved on the outer side of the guide rod, and two ends of the spring are respectively abutted to the mounting seat and the surface of the second locating block.

Furthermore, a first driving piece for adjusting the rotation angle of the positioning mechanism is arranged below the carrier table.

Further, the test indenter is connected to a pressure sensor mounted on a first linkage plate mounted to the moving end of the drive mechanism.

Furthermore, the driving mechanism comprises a first driving assembly, the moving end of the first driving assembly is fixedly connected with a second driving assembly, the moving end of the second driving assembly is fixedly connected with a third driving assembly, and the moving end of the third driving assembly is fixedly connected with a first connecting plate; the first driving assembly is used for driving the second driving assembly and the third driving assembly to horizontally move; the second driving assembly is used for driving the third driving assembly to vertically move; the third driving assembly is used for driving the testing pressure head to abut against the surface of the key, and the third driving assembly is provided with a distance detection assembly.

Furthermore, a second connecting plate is fixedly connected to the moving end of the second driving assembly, the surface of the second connecting plate is fixedly connected with the first motor, and the rotating end of the first motor is fixedly connected with the third driving assembly.

Furthermore, the third driving assembly comprises an installation support, a screw nut group and a second motor are arranged on the surface of the installation support, a rotating shaft of the second motor is connected with the screw nut group, a moving end of the screw nut group is fixedly provided with a first connecting plate, and the first connecting plate is connected with the installation support in a sliding manner; the mounting support is fixedly provided with a grating ruler, and the first connecting plate is provided with a reading head matched with the grating ruler.

Furthermore, a distance sensor for detecting the distance between the testing pressure head and the key is fixedly arranged on the first connecting plate.

The beneficial effects of the utility model include:

(1) the pressure of the workpiece on the test pressure head and the moving distance of the workpiece under the pressure can be automatically tested.

(2) This resilient means can carry out automatic test to a plurality of buttons on the same work piece, presses the axle and adopts high accuracy pressure sensor to detect, and pressure accuracy 0.02N, moving distance detects and adopts the grating chi test, and the displacement accuracy can reach 0.1um to can realize accurate detection through the display module output high accuracy pressure displacement round trip curve graph.

(3) The device can automatically test the elastic performance of the key with the inclined pressing surface, and has good compatibility.

Drawings

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

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a driving mechanism and a testing mechanism in an embodiment of the present invention;

fig. 3 is a schematic view of a positioning mechanism in an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the workpiece to be tested according to the present invention;

the specific implementation mode is as follows:

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without any creative work belong to the protection scope of the present invention.

The utility model provides a key testing device, which can automatically test the performance of keys on mobile phones, tablet computers, notebook computers and PC machines, and the specific structure of the embodiment can be referred to as the figures 1 to 3, the key test device comprises a positioning mechanism 2, the positioning mechanism 2 is used for positioning and clamping a workpiece 4 with keys 41, the workpiece 4 may be a mobile phone, a tablet computer, a PC, etc., and fig. 4 shows a notebook computer housing 42, a button 41 is arranged on the outer side of the notebook computer shell 42, a testing mechanism 3 is arranged on one side of the positioning mechanism 2, the testing mechanism 3 comprises a testing pressure head 31, a pressure sensor 32 and a distance detection component 34, the pressure sensor 31 is used for detecting the pressure exerted by the key 41 on the test indenter 31, and the distance detection component 34 is used for detecting the moving distance of the test indenter 31 relative to the key 41; the driving mechanism 1 is used for driving the testing pressure head 31 to abut against the surface of the key 41, so that the testing pressure head 31 is automatically driven to move.

In this embodiment, the driving mechanism 1 drives the testing ram 31 to move and the testing ram 31 is abutted to the surface of the key 41, the driving mechanism 1 can drive the testing ram 31 to move to the position of the key 41 by adopting an electric cylinder or a lead screw nut set or a linear motor and press the key 41, the driving mechanism 1 is provided with a detection component 34 to automatically detect the moving distance of the testing ram 31 and connect the testing ram 31 with the pressure sensor 32, the pressure accuracy of the pressure sensor 32 reaches 0.02N, so that the pressure sensor 32 can detect the pressure applied to the testing ram 3 by the key 41 in real time, the moving distance of the key 41 and the pressure applied to the testing ram 31 by the key 41 can be obtained, if the key 41 moves down by 0.01mm, the pressure sensor 32 can sense the pressure applied to the testing ram 31 by the key 41 when the key moves down by 0.01mm in real time, and the obtained detection result is compared with the set detection standard, so that it can be judged whether the elastic property of the key 41 meets the process requirements.

In another embodiment, the key testing device further includes a display component, which is not shown in the drawings, and the display component may be a touch screen or a display screen, the touch screen is connected to the control system, and the control system automatically draws a pressure displacement curve according to the pressure detected by the pressure sensor 32 and the moving distance of the key 41 detected by the detection component 34, and the pressure displacement curve includes a pressure displacement curve from the time when the test ram 3 contacts the key 41 to the time when the key 41 is fully compressed and the test ram 3 is fully separated from the key 41, and the pressure displacement curve is displayed by the display component.

In this embodiment, the display component can display the pressure displacement curve chart of the pressing process of the key 41 in real time, so as to facilitate the manual judgment of whether the elastic performance of the key 41 meets the test requirement.

In another embodiment, as shown in fig. 3, the positioning mechanism 2 includes a carrier table 21, two adjacent side ends of the carrier table 21 are respectively fixed with a first positioning block 22, one side end is fixed with one first positioning block 22, the other side end is fixed with two first positioning blocks 22, certainly, a plurality of first positioning blocks 22 can be respectively fixed on two adjacent side ends, two adjacent side ends of the carrier table 21 are respectively provided with a positioning assembly 23 for positioning the workpiece 4, the positioning assembly 23 includes a second positioning block 231 and a mounting seat 232, wherein the mounting seat 232 is fixedly connected to the lower surface of the carrier table 21, the second positioning block 231 is slidably connected to the upper surface of the mounting seat 232 through a wire-track slider mechanism, a guide rod 233 is fixedly arranged on the mounting seat 232, the guide rod 233 is slidably connected to the second positioning block 231, a spring 234 is sleeved outside the guide rod 233, two ends of the spring 234 are respectively abutted against the surfaces of the mounting seat 232 and the second positioning block 231, after the workpiece 4 is moved to the carrier table 21, the two second positioning blocks 231 respectively abut against the workpiece 4 on the first positioning block 22 under the action of the springs 234, so as to complete the positioning of the workpiece 4, and the second positioning blocks 231 can also be connected with the air cylinder, so that the second positioning blocks 231 can be automatically driven to move.

Further, vacuum suction holes 24 are provided on the upper surface of the carrier table 21, and when the vacuum suction holes 24 are evacuated, the workpiece 4 is sucked to the upper surface of the carrier table 21.

In this embodiment, by providing the first positioning blocks 22 and the positioning assemblies 23 around the carrier table 21, after the workpiece 4 is transported to the carrier table 21, the positioning assemblies 23 on both sides respectively press against the surface of the workpiece 4, so that the workpiece 4 is positioned, and the vacuum suction holes in the carrier table 21 are vacuumized by the vacuum-pumping device to form a negative pressure, so that the workpiece 4 is sucked onto the upper surface of the carrier table 21.

Further, a first driving member 5 is arranged below the carrier table 21, the first driving member 5 is used for adjusting the rotation angle of the positioning mechanism 2, the first driving member 5 may be a servo motor or a stepping motor, the first driving member 5 can adjust the rotation angle of the carrier table 21, so that the testing indenter 31 can perform performance testing on the buttons 41 on multiple sides of the workpiece 4, after the performance testing on the buttons 41 on one side of the workpiece 4, if the performance testing needs to be performed on the buttons 41 on the other side of the workpiece 4, the workpiece 4 can be driven to rotate by the action of the first driving member 5, so that the buttons 41 on the other side of the workpiece 4 face the testing indenter 31, and the testing indenter 31 can test the buttons 41 on the side conveniently.

In another embodiment, the driving mechanism 1 includes a first driving assembly 11, the first driving assembly 11 may be a screw nut set or an electric cylinder, etc., a moving end of the first driving assembly 11 is fixedly connected to a second driving assembly 12, the second driving assembly 12 may be a screw nut set or an electric cylinder, etc., a moving end of the second driving assembly 12 is fixedly connected to a third driving assembly 13, the third driving assembly 13 may be a screw nut set or an electric cylinder, etc., a moving end of the third driving assembly 13 is fixedly connected to a first connecting plate 35, the first connecting plate 35 is fixed to a pressure sensor 32, and the pressure sensor 32 is fixedly connected to the test ram 31.

In this embodiment, the first driving assembly 11 drives the second driving assembly 12 and the third driving assembly 13 to move horizontally, so as to drive the testing ram 31 to move horizontally; the second driving assembly 12 drives the third driving assembly 13 to move vertically, so as to drive the test pressure head 31 to move vertically; in this embodiment, the first driving component 11, the second driving component 12, and the third driving component 13 are combined to provide the testing ram 31 with three degrees of freedom, so that the testing ram 31 can automatically adjust the position of the testing ram 31 according to the positions of the plurality of buttons 41 on the workpiece 4, and the testing ram 31 is opposite to the buttons 41, thereby meeting the testing requirements of the plurality of buttons 41 on the workpiece 4.

In another embodiment, in order to enable the key testing apparatus to test the key 41 with the pressing surface being an inclined surface, in this embodiment, the second connecting plate 121 is fixedly connected to the moving end of the second driving assembly 12, the first motor 14 is fixedly connected to the surface of the second connecting plate 121, the rotating end of the first motor 14 is fixedly connected to the third driving assembly 13, and when the first motor 14 operates, the testing ram 31 is driven to rotate, so that the relative angle between the testing ram 31 and the key 41 can be automatically adjusted, and the testing ram 31 is perpendicular to the pressing surface of the key 41.

Further, the third driving assembly 13 employs a screw nut transmission mechanism, the screw nut transmission mechanism includes an installation support 131, a screw nut set 133 is rotatably installed on the surface of the installation support 131, a second motor 132 is fixedly installed on the installation support 131, an output end of the second motor 132 is connected to the screw nut set 133, a moving end of the screw nut set 133 is fixedly installed on a first connecting plate 35, the first connecting plate 35 is connected to the installation support 131 through a linear rail slider mechanism, when the second motor 132 acts, the first connecting plate 35 is driven to move along the surface of the installation support 131, in order to detect the moving distance of the test pressure head 31 on the first connecting plate 35 in real time, a grating ruler 341 is fixedly installed on the installation support 131, a reading head 342 matched with the grating ruler 341 is installed on the first connecting plate 35, the displacement accuracy of the grating ruler 341 can reach 0.1um, when the test pressure head 31 moves, the moving distance of the test pressure head 31 can be detected in real time with high precision, and a pressure displacement reciprocating curve can be automatically obtained by using a control system in combination with the pressure detected by the pressure sensor 32.

In another embodiment, a distance sensor 33 for detecting the distance between the test indenter 31 and the key 41 is fixed on the first connecting plate 35.

In this embodiment, the distance sensor 33 is disposed on the first connecting plate 35, so as to detect the vertical distance between the test indenter 31 and the button 41 in real time, the distance sensor 33 is connected to the control system, and the third driving assembly 13 automatically adjusts the moving speed of the test indenter 31 according to the detected vertical distance, so that the test indenter 31 can be quickly abutted to the surface of the button 41.

The key test device has the following specific action process:

placing the workpiece 4 with the keys 41 on the positioning mechanism 2, positioning the workpiece 4 by the positioning mechanism 2, and adsorbing the workpiece 4 on the positioning mechanism 2 by virtue of vacuum adsorption force;

the first driving component 11 acts to drive the second driving component 12 and the third driving component 13 to act, thereby driving the testing pressure head 31 to move to the horizontal position of the key 41, the second driving component 12 to move to drive the dynamic testing pressure head 31 to move to the vertical position of the key 41, the third driving component 13 to move to drive the testing pressure head 31 to abut against the surface of the key 41, if the other keys 41 on the side need to be tested, the first driving component 11, the second driving component 12, and the third driving component 13 can respectively act to make the testing ram 31 abut against the surface of the key 41 to be tested, after the one-side button 41 on the workpiece 4 is tested, the carrier table 21 is driven by the first driving member 5, the carrier table 21 rotates to a set angle, e.g., 90 deg., the test indenter 31 performs a spring test on the other side key 41 on the workpiece 4.

When the pressing surface of the key 41 is an inclined surface, the third driving component 13 is driven to rotate by the rotating end of the first motor 14, so that the testing pressure head 31 is arranged perpendicular to the key 41, the position of the testing pressure head 31 is adjusted by the first driving component 11, the second driving component 12 and the third driving component 13, the testing pressure head 31 is moved to a set position, the elasticity test of the key 41 is completed, and a pressure displacement curve graph of the elasticity test of the key 41 is displayed by the display screen.

The present invention has been described in connection with specific embodiments, but it should be clear to a person skilled in the art that these descriptions are intended to be illustrative and not limiting to the scope of the invention. Various modifications and adaptations of the present invention may occur to those skilled in the art, which are within the scope of the present invention, based on the spirit and principles of the present invention.

Claims

1. A key testing device, comprising:

the positioning mechanism is used for positioning and clamping a workpiece with a key;

the testing mechanism is arranged on one side of the positioning mechanism and comprises a testing pressure head, a pressure sensor and a distance detection assembly, wherein the pressure sensor is used for detecting the pressure exerted by the key on the testing pressure head, and the distance detection assembly is used for detecting the moving distance of the testing pressure head relative to the key;

and the driving mechanism is used for driving the test pressure head to abut against the surface of the key.

2. The key test device of claim 1, wherein:

3. The key test device of claim 1, wherein:

the positioning mechanism comprises a carrier table, two adjacent side ends of the carrier table are respectively and fixedly provided with a first positioning block, the other two adjacent side ends of the carrier table are respectively provided with a positioning assembly used for positioning a workpiece, the upper surface of the carrier table is provided with a vacuum adsorption hole, and the vacuum adsorption hole is used for adsorbing the workpiece on the upper surface of the carrier table.

4. A key press test device as claimed in claim 3, characterized in that: the positioning assembly comprises a second positioning block and a mounting seat, wherein the mounting seat is fixedly connected with the lower surface of the carrier table, the second positioning block is connected to the upper surface of the mounting seat in a sliding mode, a guide rod is fixedly arranged on the mounting seat and is connected with the second positioning block in a sliding mode, a spring is sleeved on the outer side of the guide rod, and the two ends of the spring are respectively abutted to the surface of the mounting seat and the surface of the second positioning block.

5. The key press test device of claim 4, wherein: and a first driving piece is arranged below the carrier table and used for adjusting the rotation angle of the positioning mechanism.

6. The key test device of claim 1, wherein:

the test pressure head is connected to a pressure sensor, the pressure sensor is mounted on a first connecting plate, and the first connecting plate is mounted at the moving end of the driving mechanism.

7. The key test device of claim 6, wherein:

the driving mechanism comprises a first driving assembly, the moving end of the first driving assembly is fixedly connected with a second driving assembly, the moving end of the second driving assembly is fixedly connected with a third driving assembly, and the moving end of the third driving assembly is fixedly connected with a first connecting plate;

the first driving assembly is used for driving the second driving assembly and the third driving assembly to horizontally move; the second driving assembly is used for driving the third driving assembly to vertically move; the third driving assembly is used for driving the testing pressure head to abut against the surface of the key, and the third driving assembly is provided with a distance detection assembly.

8. The key test device of claim 7, wherein:

and the moving end of the second driving assembly is fixedly connected with a second connecting plate, the surface of the second connecting plate is fixedly connected with a first motor, and the rotating end of the first motor is fixedly connected with a third driving assembly.

9. The key test device of claim 8, wherein:

the third driving assembly comprises an installation support, a screw nut group and a second motor are arranged on the surface of the installation support, a rotating shaft of the second motor is connected with the screw nut group, a moving end of the screw nut group is fixedly provided with a connecting plate, and the connecting plate is connected with the installation support in a sliding manner;

the mounting support is fixedly provided with a grating ruler, and the connecting plate is provided with a reading head matched with the grating ruler.

10. The key test device of claim 9, wherein: and a distance sensor for detecting the distance between the test pressure head and the key is fixedly arranged on the connecting plate.