CN216696550U

CN216696550U - Automatic high-low needle switching device

Info

Publication number: CN216696550U
Application number: CN202122710935.7U
Authority: CN
Inventors: 肖秋生; 倪恒峰
Original assignee: Suzhou Qiuyeyi Machinery Co ltd
Current assignee: Suzhou Qiuyeyi Machinery Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-06-07
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a high-low needle automatic switching device, which comprises an upper support plate; a lower carrier plate; the PCBA to be detected is fixedly arranged on the surface of the downloading board; the probe needle bed is connected to the bottom of the upper support plate in a sliding mode, positioning columns are uniformly distributed on the bottom face of the probe needle bed, and grooves matched with the positioning columns are formed in the surface of the lower support plate; the bottom of the probe module which is fixedly connected with the probe needle bed and corresponds to the PCBA to be tested is connected with a first probe and a second probe in a sliding mode, and the height of the first probe extending out of the bottom face of the probe needle bed is larger than that of the second probe; the driving piece is fixedly connected with the probe needle bed and drives the probe needle bed to horizontally slide so as to enable the positioning column to be inserted into the groove or to be staggered, and automatic switching of the first probe and the second probe is realized; through adopting above-mentioned structure, when the probe that needs use different length tests PCBA, adopt a test machine can accomplish, with low costs, and can switch two kinds of different probes of length automatically in operation process, it is efficient, easy operation.

Description

Automatic high-low needle switching device

Technical Field

The utility model relates to the technical field of printed circuit board testing equipment, in particular to an automatic high-low needle switching device for testing a printed circuit board.

Background

The test of the printed circuit board (i.e. the PCBA) is an important link in the field of electronic manufacturing, and can judge whether the tested object achieves the initial design target, and the test of the PCBA can reduce the factory failure rate of the board card and the device, which is an important means for improving the product quality, so the test of the PCBA is also more and more emphasized by various companies. One of the common methods for detecting the PCBA is to use a test probe needle bed tool, and the basic principle of the test needle bed tool of the PCBA is to lead out a single board test point through a test probe of the tool, provide a test signal to a specific test point of the PCBA through the test probe, read an output signal through the specific test point, and judge whether the PCBA works in a normal state.

At present, the length of probes on a probe module for testing the PCBA is consistent, when the probes with different lengths are required to test the PCBA, two test devices need to be prepared, the operation is troublesome, the test efficiency is low, and the cost is high.

Therefore, there is a need to provide a new technical solution to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic high-low needle switching device which can effectively solve the technical problems.

In order to achieve the purpose of the utility model, the following technical scheme is adopted:

an automatic high-low needle switching device comprises:

the upper carrier plate and the lower carrier plate are arranged in parallel;

the PCBA to be detected is fixedly arranged on the surface of the downloading board;

the probe needle bed is connected to the bottom of the upper support plate in a sliding mode, positioning columns are uniformly distributed on the bottom surface of the probe needle bed, and grooves matched with the positioning columns are formed in the surface of the lower support plate;

the probe modules are fixedly connected with the probe needle bed and correspond to the PCBA to be detected one by one, the bottom of each probe module is vertically and slidably connected with a first probe and a second probe, and the height of the first probe extending out of the bottom surface of the probe needle bed is larger than that of the second probe;

and the driving piece is fixedly connected with the probe needle bed and drives the probe needle bed to horizontally slide so as to enable the positioning column to be inserted into the groove or to be staggered, and the first probe and the second probe are automatically switched.

Preferably, the bottom surface of the upper support plate is provided with a stroke groove, and the probe needle bed is connected in the stroke groove in a sliding manner.

Preferably, a guide slide rail is fixedly arranged in the stroke groove, and the upper surface of the probe needle bed is in sliding connection with the guide slide rail.

Preferably, the stroke groove and the probe needle bed are both arranged in a cross shape.

Preferably, a travel switch is mounted on the bottom surface of the upper carrier plate so as to control the horizontal displacement of the probe needle bed in the travel groove.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, a first probe and a second probe with different lengths are combined in a probe module and matched with a probe needle bed, a driving part, a positioning column and a groove which are in sliding connection with an uploading plate; when the probes with different lengths are required to be used for testing the PCBA, the PCBA can be tested by adopting one testing machine, the cost is low, the probes with different lengths can be automatically switched in the operation process, the efficiency is high, and the operation is simple.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic structural diagram of an automatic high-low needle switching device according to the present invention;

fig. 2 is an exploded schematic view of the automatic high-low needle switching device provided by the present invention.

Numerical description in the figures:

1. an upper carrier plate; 2. a lower carrier plate; 3. PCBA to be tested; 4. a probe needle bed; 5. a probe module; 6. a drive member; 7. a first probe; 8. a second probe; 9. a positioning column; 10. a groove; 11. a stroke slot; 12. a travel switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the utility model and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the utility model. When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

The automatic high-low needle switching device of the utility model will be clearly and completely described with reference to the accompanying drawings.

As shown in fig. 1 to 2, the present invention provides an automatic high-low needle switching device, which includes an upper carrier plate 1, a lower carrier plate 2, a PCBA3 to be tested, a probe needle bed 4, a probe module 5, and a driving component 6.

Specifically, the upper carrier plate 1 and the lower carrier plate 2 are arranged in parallel; the PCBA3 to be tested is arranged on the surface of the lower carrier plate 2; the probe needle bed 4 is connected to the bottom surface of the upper carrier plate 1 in a sliding manner; the probe module 5 is installed on the lower surface of the probe needle bed 4, the bottom of the probe module is connected with a first probe 7 and a second probe 8 in a sliding manner, and the height of the first probe 7 extending out of the bottom surface of the probe needle bed 4 is greater than that of the second probe 8; the driving part 6 is installed at the left end or the right end of the probe needle bed 4, and is used for driving the probe needle bed 4 to drive the probe module 5 to horizontally slide, and preferably is a driving cylinder.

In addition, the bottom surface of the probe needle bed 4 is integrally connected with positioning columns 9, and the positioning columns 9 are provided with 4 and distributed on the front side and the rear side of the probe module 5 in a matrix manner; the upper surface of the lower support plate 2 is provided with grooves 10 which correspond to the positioning columns 9 one by one.

When the PCBA3 to be tested needs to be tested by using the height, the driving member 6 drives the probe module 5 to horizontally slide to the right side, so that the positioning column 9 and the groove 10 are dislocated, and then the lower carrier plate 2 is moved up until the first probe 7 contacts with the PCBA3 to be tested.

When the PCBA3 to be tested needs to be tested by using a lower probe, the driving member 6 drives the probe module 5 to horizontally slide to the left side, so that the positioning columns 9 correspond to the positions of the grooves 10 one by one, and then the lower carrier plate 2 is moved upwards, in the process, the first probe 7 contacts with the PCBA3 to be tested, and then retracts towards the inside of the probe module 5 under the pushing action of the lower carrier plate 2 until the positioning columns 9 are inserted into the grooves 10, and the first probe 7 and the second probe 8 both contact with the PCBA3 to be tested.

Through adopting above-mentioned structure, combine first probe 7 and the second probe 8 that length is different in a probe module 5, when needs use the probe of different length to test PCBA, adopt a test machine to accomplish, it is with low costs, and can switch two kinds of probes that length is different automatically in operation process, it is efficient, easy operation.

Specifically, in this embodiment, a stroke slot 11 is formed in the bottom surface of the upper carrier plate 1, and the probe needle bed 4 is slidably connected in the stroke slot 11; the stroke groove 11 and the probe needle bed 4 are both arranged in a cross shape.

A guide sliding rail is installed in the stroke groove 11, and the probe needle bed 4 is connected in the stroke groove 11 in a sliding manner and is connected with the guide sliding rail in a sliding manner. The front side face and the rear side face of the guide sliding rail are both provided with concave grooves, the upper surface of the probe needle bed 4 is provided with a sliding block, and the sliding block is in clearance fit with the concave grooves and is in sliding connection with the concave grooves, so that the stability of the probe needle bed 4 in the moving process is improved.

In addition, travel switches 12 are uniformly distributed on the bottom surface of the upper carrier plate 1 at the front side and the rear side of the travel groove 11, and the travel switches 12 are distributed in a matrix. The travel switch 12 is in control connection with a control system so as to accurately control the sliding distance of the probe needle bed 4 in the travel groove 11 and ensure the accuracy of the test result.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described, and the content not described in detail in the specification belongs to the prior art known by persons skilled in the art.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model.

Claims

1. The utility model provides a high low needle automatic switching control equipment which characterized in that: the method comprises the following steps:

the upper carrier plate and the lower carrier plate are arranged in parallel;

the PCBA to be tested is fixedly arranged on the surface of the lower download board;

the probe modules are fixedly connected with the probe needle bed and correspond to the PCBA to be detected one by one, the bottom of each probe module is connected with a first probe and a second probe in a sliding mode, and the height of the first probe extending out of the bottom face of the probe needle bed is larger than that of the second probe;

2. The automatic high-low needle switching device according to claim 1, wherein: the bottom surface of the upper support plate is provided with a stroke groove, and the probe needle bed is connected in the stroke groove in a sliding manner.

3. The automatic high-low needle switching device according to claim 2, wherein: and a guide sliding rail is fixedly arranged in the stroke groove, and the upper surface of the probe needle bed is in sliding connection with the guide sliding rail.

4. The automatic high-low needle switching device according to claim 3, wherein: the stroke groove and the probe needle bed are both arranged in a cross shape.

5. The automatic high-low needle switching device according to any one of claims 1, 2, 3 and 4, wherein: and a travel switch is arranged on the bottom surface of the upper support plate so as to control the horizontal displacement of the probe needle bed in the travel groove.