CN216209316U

CN216209316U - Automatic test fixture

Info

Publication number: CN216209316U
Application number: CN202122560793.0U
Authority: CN
Inventors: 王文锴
Original assignee: Shanghai Zhuchuang Electronic Technology Co ltd
Current assignee: Shanghai Zhuchuang Electronic Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-05
Anticipated expiration: 2031-10-25

Abstract

The utility model belongs to the technical field of circuit board test jigs, and particularly relates to an automatic test tool fixture which comprises an automatic test machine, wherein a test head and a fixed jig are fixedly arranged at the top of the automatic test machine, the test head is positioned right above the fixed jig, the fixed jig comprises a bottom plate fixedly connected with the automatic test machine, a rectangular frame is fixedly arranged at the top of the bottom plate, air cylinders are fixedly arranged on two adjacent sides of the rectangular frame, four sliding fixtures are arranged in the rectangular frame, each sliding fixture comprises a rectangular block and a pressing block which are connected in a sliding mode, and the four rectangular blocks are fixedly connected with output shafts of the two air cylinders and inner walls of two sides, far away from the two air cylinders, of the rectangular frame respectively. The circuit board testing device can fix and test most circuit boards with different sizes and thicknesses, is more convenient to feed and discharge, can protect pins on the circuit boards, and can prevent the pins from being bent or broken.

Description

Automatic test fixture

Technical Field

The utility model relates to the technical field of circuit board test fixtures, in particular to an automatic test fixture.

Background

Printed circuit boards, which are providers of electrical connections for electronic components, have been developed for over 100 years; the design of the method is mainly layout design; the circuit board has the main advantages of greatly reducing errors of wiring and assembly, improving automation level and production labor rate, and the test of the circuit board is an important link in the field of electronic manufacturing and can judge whether a tested object achieves an initial design target.

However, due to the fact that sizes and thicknesses of circuit boards in different batches are different, the circuit board fixing clamp required in the test cannot be shared, and pins on the circuit board are easily damaged by the existing clamp.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic test tool clamp which can fix and test most of circuit boards with different sizes and thicknesses, is more convenient to feed and discharge, can protect pins on the circuit boards, and can prevent the pins from being bent or broken.

The embodiment of the utility model is realized by the following steps:

the embodiment of the utility model provides an automatic test tool clamp which comprises an automatic test machine, wherein a test head and a fixing jig are fixedly installed at the top of the automatic test machine, the test head is positioned right above the fixing jig, the fixing jig comprises a bottom plate fixedly connected with the automatic test machine, a rectangular frame is fixedly installed at the top of the bottom plate, air cylinders are fixedly installed at two adjacent sides of the rectangular frame, four sliding clamps are arranged in the rectangular frame, each sliding clamp comprises a rectangular block and a pressing block which are connected in a sliding mode, the four rectangular blocks are respectively fixedly connected with output shafts of the two air cylinders and inner walls of two sides, far away from the two air cylinders, of the rectangular frame, and a plurality of balls which are distributed in a rectangular mode are movably installed at the top of the bottom plate.

Preferably, a feed opening is formed in one corner of the bottom plate, and the feed opening is located between the two cylinders.

Preferably, two slide holes are formed in the rectangular block, slide blocks are arranged in the two slide holes in a sliding mode, and the two slide blocks are fixedly connected with the pressing block.

Preferably, the same guide rod is fixedly installed on the inner walls of the top and the bottom of the rectangular block, the guide rod penetrates through the sliding block and is connected with the sliding block in a sliding mode, a second spring is fixedly installed on the inner wall of the top of the sliding hole, the bottom end of the second spring is fixedly connected with the sliding block, and the second spring is sleeved on the guide rod in a sliding mode.

Preferably, the bottom of bottom plate has been seted up the rectangular channel, rectangular channel and a plurality of ball quantity equal and be the round hole that the rectangle array distributes, a plurality of balls all run through corresponding round hole and with correspond round hole sliding connection together.

Preferably, one end of each ball, far away from the bottom plate, is fixedly provided with a first spring, one end of each ball, far away from the bottom plate, is fixedly provided with a baffle, and the baffles are fixedly connected with the inner wall of the rectangular groove.

Preferably, the bottom of the pressing block is provided with an oblique groove, and an included angle between the oblique groove and the bottom plate is smaller than 30 degrees.

Compared with the prior art, the utility model has the beneficial effects that: the circuit board is placed on the top of the bottom plate and is positioned in the rectangular frame, then the two cylinders are started, the two cylinders drive the sliding clamp on the two cylinders to be attached to the circuit board and push the circuit board to an included angle of one side of the rectangular frame far away from the upper discharging opening, simultaneously contacts with the other two sliding clamps, the pressing block on the sliding clamps moves upwards along with the continuous approach of the four sliding clamps to the circuit board, when the four rectangular blocks are contacted with the circuit board, the lateral thrust can be provided for the circuit board, thereby preventing the circuit board from shaking in the horizontal direction, and under the reset elasticity of the two groups of compressed springs II, the pressing block can provide downward pressure for the circuit board, therefore, the circuit board can be firmly fixed by the four sliding clamps, the circuit board is prevented from deviating, meanwhile, the circuit boards with different thicknesses can be fixed, the universality is stronger, and the test head can test the circuit boards conveniently.

The circuit board testing device can fix and test most circuit boards with different sizes and thicknesses, is more convenient to feed and discharge, can protect pins on the circuit boards, and can prevent the pins from being bent or broken.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the fixing jig of the present invention;

FIG. 3 is an exploded view of the slide clamp of the present invention;

FIG. 4 is an exploded view of the base plate of the present invention;

fig. 5 is a schematic view of the overall structure of the ball and the first spring in the utility model.

In the figure: 1. an automatic testing machine; 2. a test head; 3. fixing the jig; 31. a base plate; 311. a rectangular groove; 312. a circular hole; 313. a ball bearing; 314. a first spring; 315. a baffle plate; 32. a feeding port and a discharging port; 33. a cylinder; 34. a sliding jig; 341. a rectangular block; 342. a slide hole; 343. a slider; 344. briquetting; 345. a guide bar; 346. a second spring; 35. and (5) a rectangular frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, an embodiment of the present invention provides an automatic test fixture, which includes an automatic test machine 1, a test head 2 and a fixing jig 3 are fixedly mounted on a top of the automatic test machine 1, the test head 2 is located right above the fixing jig 3, the fixing jig 3 includes a bottom plate 31 fixedly connected to the automatic test machine 1, a rectangular frame 35 is fixedly mounted on a top of the bottom plate 31, air cylinders 33 are fixedly mounted on two adjacent sides of the rectangular frame 35, four sliding fixtures 34 are disposed in the rectangular frame 35, each sliding fixture 34 includes a rectangular block 341 and a pressing block 344 slidably connected together, the four rectangular blocks 341 are fixedly connected to output shafts of the two air cylinders 33 and inner walls of the rectangular frame 35 on two sides far away from the two air cylinders 33, and a plurality of balls 313 distributed in a rectangular shape are movably mounted on the top of the bottom plate 31.

An upper feed opening 32 is formed in one corner of the bottom plate 31, and the upper feed opening 32 is positioned between the two cylinders 33; through seting up material mouth 32, can make things convenient for the taking of circuit board in rectangle frame 35.

Two slide holes 342 are formed in the rectangular block 341, sliders 343 are slidably mounted in the two slide holes 342, and the two sliders 343 are fixedly connected with the pressing block 344.

The same guide rod 345 is fixedly installed on the inner walls of the top and the bottom of the rectangular block 341, the guide rod 345 penetrates through the sliding block 343 and is connected with the sliding block 343 in a sliding manner, a second spring 346 is fixedly installed on the inner wall of the top of the sliding hole 342, the bottom end of the second spring 346 is fixedly connected with the sliding block 343, and the second spring 346 is sleeved on the guide rod 345 in a sliding manner; by arranging the second spring 346, after the pressing block 344 drives the rectangular block 341 to move upwards, the pressing block 344 can always have a downward pushing force, so that the circuit board can be fixed from first to next.

Rectangular channel 311 has been seted up to the bottom of bottom plate 31, and rectangular channel 311 equals and is the round hole 312 that the rectangular array distributes with a plurality of ball 313 quantity, and a plurality of ball 313 all run through corresponding round hole 312 and with correspond round hole 312 sliding connection and be in the same place.

One end of each ball 313, which is far away from the bottom plate 31, is fixedly provided with the same spring I314, one end of each spring I314, which is far away from the bottom plate 31, is fixedly provided with the same baffle 315, and the baffles 315 are fixedly connected with the inner wall of the rectangular groove 311; through the cooperation of the first spring 314 and the ball 313, when the circuit board is placed on the bottom plate 31, the circuit board can be rotated to be empty, pins on the circuit board can be protected, and meanwhile, the circuit board is convenient to take.

An inclined groove is formed in the bottom of the pressing block 344, and the included angle between the inclined groove and the bottom plate 31 is smaller than 30 degrees; the circuit board can be conveniently pushed by the pressing block 344 to move upwards by arranging the inclined groove, so that the circuit board can be more quickly close to the rectangular block 341.

The working principle is as follows: the circuit board is placed on the top of the bottom plate 31 and is positioned in the rectangular frame 35, then the two cylinders 33 are started, the two cylinders 33 drive the sliding clamps 34 on the two cylinders 33 to attach to the circuit board and push the circuit board to the rectangular frame 35, the included angle of the side far away from the upper discharging opening 32 and the lower discharging opening 32 is formed, the other two sliding clamps 34 are contacted simultaneously, the pressing block 344 on the sliding clamps 34 moves upwards along with the continuous approach of the four sliding clamps 34 to the circuit board, when the four rectangular blocks 341 are contacted with the circuit board, the lateral thrust can be provided for the circuit board, therefore, the circuit board can be prevented from swinging in the horizontal direction, and under the reset elasticity of the two groups of compressed springs 346, the pressing block 344 can provide downward pressure for the circuit board, therefore, the circuit board can be firmly fixed through the four sliding clamps 34, the circuit board can be prevented from deviating, and meanwhile, the circuit boards with different thicknesses can be fixed, the commonality is stronger, makes things convenient for test head 2 to test the circuit board.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic test frock clamp, includes automatic testing machine (1), its characterized in that: the top of the automatic testing machine (1) is fixedly provided with a testing head (2) and a fixed jig (3), the testing head (2) is positioned right above the fixed jig (3), the fixed jig (3) comprises a bottom plate (31) fixedly connected with the automatic testing machine (1), a rectangular frame (35) is fixedly installed at the top of the bottom plate (31), air cylinders (33) are fixedly installed on two adjacent sides of the rectangular frame (35), four sliding clamps (34) are arranged in the rectangular frame (35), each sliding clamp (34) comprises a rectangular block (341) and a pressing block (344) which are connected together in a sliding mode, the four rectangular blocks (341) are fixedly connected with the output shafts of the two cylinders (33) and the inner walls of the two sides, far away from the two cylinders (33), of the rectangular frame (35) respectively, the top of the bottom plate (31) is movably provided with a plurality of balls (313) which are distributed in a rectangular shape.

2. The automatic test tooling fixture of claim 1, wherein: a feeding and discharging opening (32) is formed in one corner of the bottom plate (31), and the feeding and discharging opening (32) is located between the two cylinders (33).

3. The automatic test tooling fixture of claim 1, wherein: two slide holes (342) are formed in the rectangular block (341), sliders (343) are installed in the two slide holes (342) in a sliding mode, and the two sliders (343) are fixedly connected with the pressing block (344).

4. The automatic test tooling fixture of claim 3, wherein: the top and the bottom inner walls of the rectangular block (341) are fixedly provided with the same guide rod (345), the guide rod (345) penetrates through the sliding block (343) and is connected with the sliding block (343) in a sliding mode, the top inner wall of the sliding hole (342) is fixedly provided with a second spring (346), the bottom end of the second spring (346) is fixedly connected with the sliding block (343), and the second spring (346) is sleeved on the guide rod (345) in a sliding mode.

5. The automatic test tooling fixture of claim 1, wherein: rectangular channel (311) have been seted up to the bottom of bottom plate (31), rectangular channel (311) and a plurality of ball (313) quantity equal and be round hole (312) that the rectangle array distributes, a plurality of ball (313) all run through corresponding round hole (312) and with correspond round hole (312) sliding connection together.

6. The automatic test tooling fixture of claim 1, wherein: one end of each ball (313) far away from the bottom plate (31) is fixedly provided with a first spring (314), one end of each spring (314) far away from the bottom plate (31) is fixedly provided with a baffle (315), and the baffles (315) are fixedly connected with the inner wall of the rectangular groove (311).

7. The automatic test tooling fixture of claim 1, wherein: the bottom of the pressing block (344) is provided with an inclined groove, and an included angle between the inclined groove and the bottom plate (31) is smaller than 30 degrees.