CN211043439U

CN211043439U - Test fixture

Info

Publication number: CN211043439U
Application number: CN201921338784.3U
Authority: CN
Inventors: 赵彤; 马清海; 李东亮; 陈通
Original assignee: Smc Tianjin Manufacturing Co ltd; Smc China Co ltd; SMC Beijing Manufacturing Co Ltd; SMC Corp
Current assignee: Smc Tianjin Manufacturing Co ltd; Smc China Co ltd; SMC Beijing Manufacturing Co Ltd; SMC Corp
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-07-17
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a test fixture, which comprises a base, a sliding arm with a test bulge, an actuating mechanism for driving the sliding arm to reciprocate up and down and a driving mechanism for driving the actuating mechanism to actuate through fluid; the actuating mechanism is arranged on the base, and the sliding arm is connected with the output end of the actuating mechanism; a flexible conduit for fluid communication is connected between the drive mechanism and the actuator. The utility model discloses a test fixture connects actuating mechanism and actuating mechanism through flexible pipeline, and actuating mechanism can pass through flexible pipeline with the fluid and transmit to actuating mechanism, and actuating mechanism actuates and drives the slip arm and test the arch and slide from top to bottom, accomplishes the screen test. And the vibration or the shake generated when the driving mechanism actuates can be only transmitted to the flexible pipeline, but not directly transmitted to the actuating mechanism, so that the sliding of the sliding arm and the test bulge can not be influenced, and the test precision is improved.

Description

Test fixture

Technical Field

The utility model relates to a screen test technical field especially relates to a test fixture.

Background

The semi-finished product of the display screen assembly needs to be tested and inspected so as to reduce the outflow of defective products of the display screen and ensure the product quality.

In the existing test scheme, the drive unit drives the execution unit on the base to act through the connecting rod, and then the execution unit drives the test arm to move up and down, so that the test is completed.

Because the driving unit is connected with the execution unit through the connecting rod, the connecting rod can slightly vibrate or shake when the driving unit actuates, and the slight vibration or shake can be transmitted to the execution unit, so that the test arm can also slightly vibrate or shake to influence the test accuracy or precision.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve test fixture of test accuracy.

The technical scheme of the utility model provides a test fixture, which comprises a base, a sliding arm with a test bulge, an actuating mechanism for driving the sliding arm to reciprocate up and down and a driving mechanism for driving the actuating mechanism to actuate through fluid;

the actuating mechanism is arranged on the base, and the sliding arm is connected with the output end of the actuating mechanism;

a flexible conduit for fluid communication is connected between the drive mechanism and the actuator.

Further, the actuating mechanism comprises a first cylinder, a first piston arranged in the first cylinder and a first piston rod connected with the first piston;

the first cylinder body is mounted on the base through a mounting frame, and the first piston rod penetrates through the first cylinder body and extends towards the base;

the sliding arm is connected with the first piston rod;

the driving mechanism comprises a second cylinder body, a second piston arranged in the second cylinder body and a second piston rod connected with the second piston;

the second piston rod penetrates out of the second cylinder body upwards;

the flexible pipe is connected between the first cylinder and the second cylinder.

Further, the first piston separates the first cylinder into a first cylinder upper chamber and a first cylinder lower chamber;

the second piston separates the second cylinder into a second cylinder upper chamber and a second cylinder lower chamber;

the flexible pipe comprises a first flexible pipe and a second flexible pipe;

the first flexible pipeline is connected between the first cylinder body lower cavity and the second cylinder body lower cavity, and the second flexible pipeline is connected between the first cylinder body upper cavity and the second cylinder body upper cavity.

Further, a sliding seat is arranged on one side, facing the first cylinder, of the sliding arm;

a linear guide mechanism extending up and down is arranged on the first cylinder body, and the sliding seat is slidably arranged on the linear guide mechanism;

the sliding seat is connected with the first piston rod.

Further, the linear guide mechanism is a linear guide rail, a linear sliding groove is formed in the sliding seat, the linear guide rail is arranged in the linear sliding groove, and the linear guide rail is in clearance fit with the linear sliding groove; alternatively, the first and second electrodes may be,

the linear guide mechanism is a linear sliding chute, and a linear guide rail is arranged on the sliding seat;

the linear guide rail is arranged in the linear sliding groove and is in clearance fit with the linear sliding groove.

Further, a reset driving part for driving the second piston rod to reset upwards is arranged between the second piston rod and the second cylinder body.

Furthermore, the reset driving piece is a reset spring or a reset elastic sheet.

Further, a handle is arranged on the second piston rod.

Further, a support is arranged on the base at one side of the actuating mechanism, and the driving mechanism is installed on the support.

Further, a raised test platform is arranged on the base, and the test protrusion is arranged on the bottom surface of the sliding arm and extends towards the test platform.

By adopting the technical scheme, the method has the following beneficial effects:

the utility model provides a test fixture connects actuating mechanism and actuating mechanism through flexible pipeline, and actuating mechanism can pass through flexible pipeline with the fluid and transmit to actuating mechanism, and actuating mechanism actuates and drives the slip arm and test the arch and slide from top to bottom, accomplishes the screen test. And because actuating mechanism passes through the flexible pipeline with actuating mechanism and is connected, the vibrations or rock that produce when actuating of actuating mechanism only can transmit for the flexible pipeline, and can not directly transmit for actuating mechanism to can not cause the influence to the slip of slide arm and test arch, improved the measuring accuracy.

Drawings

Fig. 1 is a perspective view of a test fixture according to an embodiment of the present invention at a first angle;

fig. 2 is a perspective view of a second angle of the test fixture according to the embodiment of the present invention;

fig. 3 is a schematic view illustrating a connection between a driving mechanism and an executing mechanism in a test fixture according to an embodiment of the present invention through a flexible pipe;

fig. 4 is a schematic view of the test fixture according to the embodiment of the present invention, when the sliding arm moves upwards to drive the test protrusion to leave the test platform;

fig. 5 is a schematic view of the test fixture according to the embodiment of the present invention, when the sliding arm moves down to drive the test protrusion to contact the test platform;

fig. 6 is an exploded view of the connection of the sliding arm, the sliding seat and the first cylinder in the testing fixture provided by the embodiment of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-5, an embodiment of the present invention provides a testing fixture, which includes a base 1, a sliding arm 2 having a testing protrusion 21, an actuator 3 for driving the sliding arm 2 to reciprocate up and down, and a driving mechanism 4 for driving the actuator 3 to actuate through a fluid.

The actuating mechanism 3 is arranged on the base 1, and the sliding arm 2 is connected with the output end of the actuating mechanism 3.

A flexible line 5 for fluid communication is connected between the drive mechanism 4 and the actuator 3.

The utility model provides a test fixture, mainly used test electronic product's screen or display screen, whether normal, the colourity of detecting screen or display screen whether exist the colour difference and the FPC winding displacement whether exist the short circuit phenomenon to test the quality of display screen.

The test protrusion 21 may be a test contact, and during testing, a flat cable or a contact wire is connected to the test protrusion 21, and the flat cable or the contact wire is connected to an external power supply device.

A screen or a display screen to be detected is placed at a corresponding position on the base 1, the executing mechanism 3 drives the sliding arm 2 to move downwards, and then the testing bulge 21 and the flat cable or the contact wire on the testing bulge are in contact with the screen or the display screen. The power supply equipment supplies power to the flat cable or the contact wire to test the quality of the screen or the display screen.

The actuator 3 is actuated by a fluid, which may be a liquid or a gas. The actuator 3 may be a cylinder or a pneumatic cylinder.

The slide arm 2 is connected to an output end (e.g., a piston rod) of the actuator 3 so that the slide arm 2 can be moved up and down by the output end of the actuator 3.

The driving mechanism 4 is used for supplying fluid to the actuator 3 to drive the actuator 3 to operate. The driving mechanism 4 may be a cylinder or a pneumatic cylinder.

When the actuating mechanism 3 is an oil cylinder, the driving mechanism 4 is also an oil cylinder; when the actuator 3 is a cylinder, the drive mechanism 4 is also a cylinder.

In order to reduce the influence on the actuator 3 when the drive mechanism 4 is actuated, the drive mechanism 4 and the actuator 3 are connected by a flexible pipe 5.

The driving mechanism 4 can transmit the fluid to the actuating mechanism 3 through the flexible pipeline 5, and the actuating mechanism 3 actuates to drive the sliding arm 2 and the testing protrusion 21 to slide up and down, so as to complete the screen test. And the vibration or the shake generated when the driving mechanism 4 is actuated can be only transmitted to the flexible pipeline 5, but not directly transmitted to the actuating mechanism 3, so that the sliding of the sliding arm 2 and the test bulge 21 can not be influenced, and the test precision is improved.

Preferably, as shown in fig. 1 to 5, the actuator 3 includes a first cylinder 31, a first piston 32 installed in the first cylinder 31, and a first piston rod 33 connected to the first piston 32. The first cylinder 31 is mounted on the base 1 via the mounting frame 12, and the first piston rod 33 extends through the first cylinder 31 and towards the base 1. The slide arm 2 is connected to a first piston rod 33.

The drive mechanism 4 includes a second cylinder 41, a second piston 42 mounted in the second cylinder 41, and a second piston rod 43 connected to the second piston 42. The second piston rod 43 extends upwardly through the second cylinder 41.

The flexible pipe 5 is connected between the first cylinder 31 and the second cylinder 41.

That is, the actuator 3 is mainly composed of the first cylinder 31, the first piston 32, and the first piston rod 33. The first piston 32 is slidably disposed in the first cylinder 31, and seals a cavity of the first cylinder 31. One end of the first piston rod 33 is connected to the first piston 32, and the other end thereof protrudes downward outside the first cylinder 31. The sliding arm 2 is connected to the first piston rod 33, and the sliding arm 2 can be driven to move up and down by the extension and contraction of the first piston rod 33.

The drive mechanism 4 is mainly composed of a second cylinder 41, a second piston 42, and a second piston rod 43. The second piston 42 is slidably disposed in the second cylinder 41, and seals a cavity of the second cylinder 41. The second piston rod 43 extends upwardly out of the second cylinder 41 for operator depression.

One end of the flexible pipe 5 is connected to the first cylinder 31, and the other end thereof is connected to the second cylinder 41.

The second piston 42 can be driven to move downwards by pressing the second piston rod 43, so that the fluid in the second cylinder 41 enters the first cylinder 31 through the flexible pipe 5, the first piston 32 and the first piston rod 33 are driven to move upwards, the first piston rod 33 drives the sliding arm 2 to move upwards, and the test protrusion 21 leaves the base 1 and leaves a screen or a display screen on the base 1.

After the external force on the second piston rod 43 is removed, the second piston 42 can be automatically moved upward to be reset. The second piston rod 43 can also be pulled by external force to move upwards for resetting. When the second piston rod 43 moves upward to return, the second piston 42 is driven to move upward in the second cylinder 41 to return, so that the fluid in the first cylinder 31 returns to the second cylinder 41 through the flexible pipe 5. The first piston 32 will move downwards in the first cylinder 31, and then the first piston rod 33 will drive the sliding arm 2 to move downwards, so that the testing protrusion 21 leans downwards on the base 1, and the screen or display on the base 1 can be tested.

Preferably, as shown in fig. 3, the first piston 32 partitions the first cylinder 31 into a first cylinder upper chamber 312 and a first cylinder lower chamber 311.

The second piston 42 partitions the second cylinder 41 into a second cylinder upper chamber 412 and a second cylinder lower chamber 411.

The flexible duct 5 comprises a first flexible duct 51 and a second flexible duct 52.

A first flexible conduit 51 connects between the first cylinder lower chamber 311 and the second cylinder lower chamber 411, and a second flexible conduit 52 connects between the first cylinder upper chamber 312 and the second cylinder upper chamber 412.

In this arrangement, when the second piston rod 43 is pressed, the second piston 42 moves downward in the second cylinder 41, so that the volume of the second cylinder lower chamber 411 of the second cylinder 41 is reduced and the volume of the second cylinder upper chamber 412 is increased. The fluid in the second lower cylinder 411 enters the first lower cylinder 311 through the first flexible conduit 51, and simultaneously the fluid in the first upper cylinder 312 enters the second upper cylinder 412 through the second flexible conduit 52. In the process, the first piston 32 and the first piston rod 33 move upwards, and the first piston rod 33 drives the sliding arm 2 to move upwards, so that the test protrusion 21 leaves the base 1 and leaves a screen or a display screen on the base 1.

The second piston 42 may be automatically moved upward to be reset when the external force of the second piston rod 43 is released. The second piston rod 43 can also be pulled by external force to move upwards for resetting. When the second piston 42 is returned upward, the volume of the second cylinder lower chamber 411 is increased, and the volume of the second cylinder upper chamber 412 is decreased. The fluid in the second cylinder upper chamber 412 enters the second cylinder upper chamber 312 through the second flexible pipe 52, and simultaneously, the fluid in the first cylinder lower chamber 311 enters the second cylinder lower chamber 411 through the first flexible pipe 51. In the process, the first piston 32 and the first piston rod 33 move downwards, and the first piston rod 33 drives the sliding arm 2 to move downwards, so that the test protrusion 21 leans downwards on the base 1, and a screen or a display screen on the base 1 can be tested.

Preferably, as shown in fig. 1 to 6, the side of the sliding arm 2 facing the first cylinder 31 is provided with a slide 22. The first cylinder 31 is provided with a linear guide mechanism 34 extending vertically, and the carriage 22 is slidably mounted on the linear guide mechanism 34. The slide 22 is connected to a first piston rod 33.

The slider 22 is mounted on the side of the sliding arm 2 close to the first cylinder 31 by means of fasteners. A linear guide mechanism 34 is provided on the first cylinder 31, and the linear guide mechanism 34 extends vertically to guide the carriage 22 to move up and down along a straight line.

The slide 22 is connected to a first piston rod 33, and the slide 22 is mounted on a linear guide 34 and can slide on the linear guide 34.

When the first piston rod 33 extends and retracts, the sliding seat 22 is driven to slide on the linear guide mechanism 34, and then the sliding arm 2 is driven to slide up and down, so that guidance is provided for the sliding of the sliding arm 2, and the installation is convenient.

Preferably, as shown in fig. 5-6, the linear guide mechanism 34 is a linear guide 341, the slide 22 is provided with a linear sliding slot 221, the linear guide 341 is disposed in the linear sliding slot 221, and the linear guide 341 is in clearance fit with the linear sliding slot 221.

Alternatively, the linear guide mechanism 34 is a linear slide groove, and a linear guide rail is provided on the slide base. The linear guide rail is arranged in the linear sliding groove and is in clearance fit with the linear sliding groove.

The linear guide mechanism 34 has two structures:

the first structure is as follows: the linear guide mechanism 34 is a linear guide 341. The linear guide 341 is a convex rail provided on the first cylinder 31. Accordingly, a linear guide groove 221 is provided on the carriage 22. During assembly, the linear guide 341 is disposed in the linear sliding groove 221, and the linear guide 341 is in clearance fit with the linear sliding groove 221, so that the sliding seat 22 can slide up and down relative to the first cylinder 31, the sliding seat 22 is conveniently guided, and the sliding seat 22 is conveniently mounted.

The second structure is as follows: the linear guide mechanism 34 is a linear slide groove, and the linear slide groove is a groove provided on the first cylinder 31. Correspondingly, linear guides are provided on the carriage, which are raised guides provided on the carriage 22. During assembly, the linear guide rail is arranged in the linear sliding groove, and the linear guide rail is in clearance fit with the linear sliding groove, so that the sliding seat 22 can slide up and down relative to the first cylinder 31, the sliding seat 22 is conveniently guided, and the sliding seat 22 is convenient to mount.

Preferably, as shown in fig. 1-2 and 4-5, a reset driver 45 for driving the second piston rod 43 to reset upward is provided between the second piston rod 43 and the second cylinder 41.

The reset driving member 45 is used for driving the second piston rod 43 to move upwards for resetting, and the reset driving member 45 is connected between the second piston rod 43 and the second cylinder 41.

When the external force of the second piston rod 43 is released, the reset driving member 45 drives the second piston rod 43 to move upward for resetting, and further drives the second piston 42 to move upward for resetting, and the first piston 32 and the first piston rod 33 move downward. The first piston rod 33 drives the sliding arm 2 to move downwards, so that the test protrusion 21 leans against the base 1 downwards, a screen or a display screen on the base 1 can be tested, and the test operation is convenient.

Preferably, the return driving member 45 is a return spring or a return leaf spring. The reset spring is a metal spring, and the reset elastic sheet is a metal elastic sheet. The upper end of the return spring or return elastic sheet is connected to the second piston rod 43, and the lower end thereof is connected to the second cylinder 41. In the initial state, the return spring or the return spring is in an expanded state (expansion spring or expansion spring), thereby assisting the second piston rod 43 to move upward for return.

Preferably, as shown in fig. 1-5, a handle 44 is disposed on the second piston rod 43, so that an operator can hold the handle 44 to press the second piston rod 43, which is convenient for operation.

Preferably, as shown in fig. 1-2 and 4-5, a bracket 13 is provided on the base 1 at a side of the actuator 3, and the driving mechanism 4 is mounted on the bracket 13.

The bracket 13 is positioned at one side of the mounting frame 12, and the actuating mechanism 3 and the driving mechanism 4 are integrated on the base 1, so that the structure size can be reduced.

Preferably, as shown in fig. 1-2 and 4-6, a raised test platform 11 is provided on the base 1, and a test projection 21 is provided on the underside of the slider arm 2 and extends toward the test platform 11.

The top surface of the test platform 11 is a plane, which is beneficial to placing a screen or a display screen. The test protrusion 21 is disposed on the bottom surface of the sliding arm 2, and extends toward the test platform 11, so as to be conveniently matched with the test platform 11 to detect a screen or a display screen.

To sum up, the utility model provides a test fixture uses two cylinders or hydro-cylinder interconnection to form closed circuit, and one is as actuating mechanism, and the base is installed simultaneously as actuating mechanism to the other end on system design, satisfies the requirement that tool power was followed. In terms of mechanical structure, the driving mechanism and the actuating mechanism are separated from each other, so that the driving mechanism and the actuating mechanism are not directly influenced with each other. Interference factors such as vibration and the like formed by power conversion cannot influence the execution end, and the high-precision requirement is met.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. A test fixture is characterized by comprising a base, a sliding arm with a test protrusion, an actuating mechanism for driving the sliding arm to reciprocate up and down and a driving mechanism for driving the actuating mechanism to actuate through fluid;

2. The test fixture of claim 1, wherein the actuator comprises a first cylinder, a first piston mounted in the first cylinder, and a first piston rod connected to the first piston;

the sliding arm is connected with the first piston rod;

the second piston rod penetrates out of the second cylinder body upwards;

3. The test fixture of claim 2, wherein the first piston separates the first cylinder into a first cylinder upper chamber and a first cylinder lower chamber;

the flexible pipe comprises a first flexible pipe and a second flexible pipe;

4. The test fixture of claim 2, wherein a slide seat is disposed on a side of the slide arm facing the first cylinder;

the sliding seat is connected with the first piston rod.

5. The testing fixture according to claim 4, wherein the linear guide mechanism is a linear guide rail, a linear sliding slot is disposed on the sliding base, the linear guide rail is disposed in the linear sliding slot, and the linear guide rail is in clearance fit with the linear sliding slot; alternatively, the first and second electrodes may be,

6. The test fixture according to any one of claims 2-5, wherein a reset driver is disposed between the second piston rod and the second cylinder for driving the second piston rod to reset upward.

7. The testing fixture of claim 6, wherein the return driving member is a return spring or a return spring plate.

8. The test fixture of claim 6, wherein a handle is disposed on the second piston rod.

9. The test fixture of claim 1, wherein a bracket is disposed on the base on a side of the actuator, and the driving mechanism is mounted on the bracket.

10. The test fixture of claim 1, wherein a raised test platform is disposed on the base, the test raised protrusion being disposed on a bottom surface of the sliding arm and extending toward the test platform.