CN218524831U

CN218524831U - Automatic testing device for integrated circuit

Info

Publication number: CN218524831U
Application number: CN202222765750.0U
Authority: CN
Inventors: 翟腾; 高宏玲; 郭青帅; 申武鑫; 张国杰; 艾文思; 马子扬
Original assignee: China Software Evaluation Center
Current assignee: China Software Evaluation Center
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-02-24
Anticipated expiration: 2032-10-20

Abstract

The utility model relates to an integrated circuit's automatic testing arrangement, casing including one side opening setting with be located first detection portion of casing, two first grooves have been seted up to the diapire in the casing, first inslot interference fit has first piston, first piston with detection portion connects, it places the chamber to have seted up two in the casing diapire, it has the second piston to place intracavity interference fit, place first and correspond the air flue has been seted up to the intercommunication between the first groove lower half, the exhaust hole has all been seted up to the relative both sides of casing, the exhaust hole with correspond first groove lower half communicates with each other, the casing lateral wall corresponds the position in exhaust hole is provided with the relief valve. The utility model relates to a technical field of integrated circuit test. The utility model discloses when the decline of detection portion tests the circuit board, can fix a position and fix the not unidimensional circuit board automatically, improved integrated circuit automatic testing arrangement's suitability.

Description

Automatic testing device for integrated circuit

Technical Field

The utility model belongs to the technical field of the technique of integrated circuit test and specifically relates to an automatic testing arrangement of integrated circuit is related to.

Background

The integrated circuit board is a carrier for loading an integrated circuit, mostly adopts a semiconductor manufacturing process, a plurality of transistors, resistors, capacitors and other components are manufactured on a smaller single crystal silicon chip, and the components are combined into a complete electronic circuit according to a multilayer wiring or tunnel wiring method.

For example, a Chinese patent with the publication number of CN212723215U discloses an integrated circuit board testing device capable of automatically switching stations, and particularly relates to the technical field of circuit board testing, wherein the integrated circuit board testing device comprises a testing frame and a testing box, and a pressing mechanism is arranged in the testing frame; hold-down mechanism includes a plurality of telescopic links, the telescopic link is fixed to be established on the inside top of test jig, the fixed roof that is equipped with in telescopic link bottom, the roof bottom is equipped with a plurality of electrodes, the electrode bottom is equipped with the bottom plate, the bottom plate rear side contacts with the test jig rear wall mutually, the fixed a plurality of first montants that are equipped with in bottom plate bottom, first montant outer end is equipped with the second montant, the fixed bottom of establishing in the test jig of second montant, the inside fixed spring that is equipped with of second montant, spring one end and first montant bottom fixed connection. The utility model discloses a through utilizing the spring upwards to promote first montant and bottom plate for the circuit board can with the electrode in close contact with at top, in order to avoid directly pressing to the circuit board.

This patent is through placing the circuit board and fixing a position the circuit board in the recess, however this kind of method is only applicable to the circuit board test of same specification and dimension, if the size of circuit board and recess is not the looks adaptation, then the circuit board can not obtain accurate location fixed for the contact on the circuit board and the detection contact pilotage of top can not accurate contact, can't test the circuit board, thereby reduced integrated circuit automatic testing arrangement's suitability.

SUMMERY OF THE UTILITY MODEL

According to the deficiency that prior art exists, the utility model aims at providing an automatic testing arrangement of integrated circuit has the convenience and fixes a position not unidimensional circuit board, improves the effect of automatic testing arrangement's of integrated circuit suitability.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an automatic testing arrangement of integrated circuit, includes the casing that one side opening set up and is located the first detection portion of casing, two first grooves have been seted up to the casing diapire, first inslot interference fit has first piston, first piston with detection portion connects, it places the chamber to have seted up two in the casing diapire, it has the second piston to place intracavity interference fit, place first one in chamber and correspond the air flue has been seted up to the intercommunication between the first groove lower half, the exhaust hole has all been seted up to the relative both sides of casing, the exhaust hole with correspond first groove lower half communicates with each other, the casing lateral wall corresponds the position in exhaust hole is provided with the relief valve, second piston bottom with correspond place and be provided with first spring between the intracavity diapire, just second piston top is provided with the location fixed part.

Through adopting above-mentioned technical scheme, through the cooperation of first piston, second piston, air flue, relief valve and location fixed part, when the test section descends to test the circuit board, can fix a position and fix the not unidimensional circuit board automatically, improved integrated circuit automatic testing arrangement's suitability.

The present invention may be further configured in a preferred embodiment as: the utility model discloses a positioning device, including casing inner wall, first piston top fixedly connected with montant, gear, spur rack, screw rod outer peripheral face threaded connection have the thread bush, the location fixed part includes the second groove, the second groove is seted up the diapire corresponds in the casing place the position in chamber, second piston top fixedly connected with montant, the montant slides and passes the second inslot diapire, montant top fixedly connected with spur rack, diapire fixedly connected with support frame in the casing, casing one side inner wall rotates and is connected with the screw rod, the screw rod rotates and passes corresponding support frame, the fixed cover of screw rod outer peripheral face is equipped with the gear, the gear with correspond the spur rack meshes mutually, screw rod outer peripheral face threaded connection has the thread bush, the thread bush is kept away from shells inner wall's one end fixedly connected with locating plate.

By adopting the technical scheme, through the cooperation of the vertical rods, the straight rack, the screw rods, the threaded sleeves and the positioning plates, when the detection part descends to test the circuit board, the two positioning plates move in opposite directions to position and fix the circuit boards with different sizes, and the applicability of the automatic testing device for the integrated circuit is improved.

The present invention may be further configured in a preferred embodiment as: the locating plate bottom fixedly connected with stopper, the diapire corresponds in the casing the spacing groove has been seted up to the position of stopper, stopper sliding connection in correspond the spacing inslot.

Through adopting above-mentioned technical scheme, through the cooperation of the spacing groove of stopper for the motion of locating plate is more stable.

The present invention may be further configured in a preferred embodiment as: the detection part comprises a plurality of electric push rods, the electric push rods are fixedly connected with the inner top wall of the shell, a top plate is arranged in the shell, two connecting frames and a plurality of connecting frames are fixedly connected to the outer surface of the top plate, the output ends of the electric push rods are connected with the top plate or the tops of the connecting frames, the bottoms of the connecting frames correspond to fixedly connected connecting columns of the first grooves, the bottom ends of the connecting columns correspond to the first pistons, a plurality of contact pins are arranged on one side of the top plate in a sliding mode, and the outer peripheral faces of the contact pins are provided with movable components.

Through adopting above-mentioned technical scheme, through the cooperation of the contact pilotage of link frame, roof, spliced pole, can drive the motion in opposite directions of locating plate in the contact pilotage whereabouts, and the contact pilotage is after touching the circuit board and electrocute, and the contact pilotage can vertical motion, prevents that contact pilotage and contact from taking place rigid collision, has protected the circuit board.

The present invention in a preferred embodiment can be further configured to: the movable assembly comprises a fixing ring, the fixing ring is fixedly sleeved on the outer peripheral surface of the contact pin, a second spring is arranged between the top plate and the fixing ring, and the contact pin penetrates through the second spring.

Through adopting above-mentioned technical scheme, through the cooperation of solid fixed ring and second spring, the contact pin is after touching the circuit board and electrocute, and the second spring can be compressed, prevents that contact pin and contact from taking place rigid collision, has protected the circuit board.

The present invention in a preferred embodiment can be further configured to: the fixed cover in montant peripheral face is equipped with the spacing ring, works as when first spring is in natural state, correspond the spacing ring with correspond place the intracavity roof and be connected, the inlet port has been seted up to first groove lateral wall lower half, the inlet port with the casing outside communicates with each other, be provided with the check valve in the inlet port.

Through adopting above-mentioned technical scheme, through the cooperation of spacing ring, check valve and inlet port, after first piston upward movement leads to the second piston to resume the normal position, first piston continues upward movement, places chamber and first inslot atmospheric pressure and reduces, and outside air can get into through the check valve and place chamber and first inslot, makes to place the intracavity and remain normal atmospheric pressure all the time to make this device can use repeatedly.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through the cooperation of first piston, second piston, air flue, relief valve, montant, spur rack, screw rod, thread bush and locating plate, when the test section descends to test the circuit board, two locating plates can move in opposite directions fix a position fixedly to not unidimensional circuit board, have improved integrated circuit automatic testing arrangement's suitability.

2. Through the cooperation of roof, contact pin, solid fixed ring and second spring, the contact pin is after touching the circuit board and electrocute, and the second spring can be compressed to make contact pin vertical motion, prevent that the contact pin from directly pressing the circuit board, reduced the damage to the circuit board.

Drawings

FIG. 1 is a front sectional view of the present embodiment;

FIG. 2 is an enlarged view of the embodiment at A in FIG. 1;

FIG. 3 is an enlarged view of the present embodiment at B in FIG. 1;

FIG. 4 is a schematic view of the overall structure of the present embodiment;

fig. 5 is an enlarged view of the embodiment at C in fig. 4.

In the figure, 1, a housing; 2. a detection unit; 21. an electric push rod; 22. a top plate; 23. a connecting frame; 24. connecting columns; 25. a stylus; 26. a movable component; 261. a fixing ring; 262. a second spring; 3. a first groove; 4. a first piston; 5. a placement chamber; 6. a second piston; 7. an airway; 8. an exhaust hole; 9. a pressure relief valve; 10. a first spring; 11. a positioning fixing part; 111. a second groove; 112. a vertical rod; 113. straight rack; 114. a screw; 115. a gear; 116. a threaded sleeve; 117. positioning a plate; 12. a limiting block; 13. a limiting groove; 14. a limiting ring; 15. an air intake; 16. a one-way valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1 to 5, the utility model discloses an automatic testing arrangement of integrated circuit, including casing 1 that one side opening set up and the detection part 2 that is located casing 1 first, casing 1 one side opening sets up and makes things convenient for operating personnel to get and puts the circuit board, and detection part 2 can carry out automatic test to the circuit board.

Two first grooves 3 have been seted up to the diapire in casing 1, and interference fit has first piston 4 in first groove 3, and first piston 4 is connected with detection portion 2.

The detection part 2 comprises a plurality of electric push rods 21, and the electric push rods 21 are fixedly connected to the inner top wall of the shell 1. Be provided with roof 22 in the casing 1, two connection frame 23 of roof 22 external surface fixed connection, a plurality of electric putter 21 output all is connected with roof 22 or connection frame 23 top. The electric push rod 21 is operated to drive the top plate 22 and the connecting frame 23 to descend synchronously.

The bottom of the connecting frame 23 is fixedly connected with a connecting column 24 corresponding to the position of the first groove 3, and the bottom end of the connecting column 24 is connected with the corresponding first piston 4. The connection frame 23 descends to drive the connection column 24 to descend, so as to drive the first piston 4 to descend, and the electric push rod 21 does not take the first piston 4 out of the corresponding first groove 3 in the working process, and the first piston 4 is not contacted with the bottom wall of the corresponding first groove 3. A plurality of contact pins 25 are slidably inserted into one side of the top plate 22, and a movable unit 26 is provided on the outer peripheral surface of each contact pin 25.

The movable assembly 26 includes a fixing ring 261, and the fixing ring 261 is fixedly fitted to the outer peripheral surface of the corresponding contact pin 25. A second spring 262 is provided between the top plate 22 and the fixed ring 261, and the contact pin 25 passes through the corresponding second spring 262. In the case that the electric putter 21 does not stop working accurately or there is a deviation in the thickness of the circuit board, the contact pins 25 can move vertically for a distance after contacting the circuit board, instead of continuously pressing the circuit board, thereby protecting the circuit board from damage.

Two placing cavities 5 are formed in the bottom wall of the shell 1, and a second piston 6 is arranged in the placing cavities 5 in an interference fit mode. Place the chamber 5 first half and correspond and communicate between the first groove 3 lower half and seted up air flue 7, the gas that lies in first piston 4 below when first piston 4 descends passes through air flue 7 and gets into to correspond and places chamber 5 first half, drives second piston 6 and descends.

Exhaust holes 8 are formed in two opposite sides of the shell 1, the exhaust holes 8 are communicated with the lower half parts of the corresponding first grooves 3, and pressure release valves 9 are arranged on the side walls of the shell 1 corresponding to the exhaust holes 8. The bottom of the second piston 6 and the inner bottom wall of the corresponding placing cavity 5 are provided with a first spring 10, the elastic force of the first spring 10 is smaller than the opening pressure of the pressure release valve 9, gas firstly pushes the first spring 10 to compress, and the gas is discharged out of the shell 1 through the pressure release valve 9 until the first spring 10 is limited and deformed.

A positioning fixing part 11 is arranged above the second piston 6. The positioning and fixing part 11 includes a second groove 111, and the second groove 111 is opened at a position corresponding to the placing cavity 5 in the bottom wall of the housing 1. The top of the second piston 6 is fixedly connected with a vertical rod 112, and the vertical rod 112 slides through the inner bottom wall of the second groove 111. The top of the vertical rod 112 is fixedly connected with a spur rack 113, the spur rack 113 is inserted into the corresponding second groove 111 when moving, and the spur rack 113 cannot contact with the inner wall of the second groove 111.

The inner wall of the shell 1 is fixedly connected with a support frame, the inner wall of one side of the shell 1 is rotatably connected with a screw 114, and the screw 114 rotates to penetrate through the corresponding support frame. The outer peripheral surface of the screw 114 is fixedly sleeved with a gear 115, and the gear 115 is meshed with the corresponding spur rack 113. The screw 114 is connected with a threaded sleeve 116 in a threaded manner on the outer peripheral surface, the threaded sleeve 116 is fixedly connected with a positioning plate 117 at one end far away from the inner wall of the shell 1, and the bottom of the positioning plate 117 is attached to the inner bottom wall of the shell 1, so that the positioning plate 117 is prevented from rotating along with the screw 114.

The first piston 4 descends to drive gas to enter the placing cavity 5, the second piston 6 descends, the first spring 10 is compressed, the second piston 6 drives the vertical rod 112 to descend, the vertical rod 112 drives the spur rack 113 to descend, the spur rack 113 drives the gear 115 to rotate, the gear 115 drives the screw 114 to rotate, the screw 114 rotates to drive the threaded sleeve 116 to move horizontally, and the threaded sleeve 116 moves horizontally to drive the positioning plate 117 to move horizontally until the two positioning plates 117 both contact the side wall of the circuit board. The first piston 4 continues to move downwards and can not drive the positioning plate 117 to move any more, the air pressure at the lower half part of the first groove 3 is increased, and the air is discharged out of the shell 1 through the pressure release valve 9.

The inner bottom wall of the placing cavity 5 is provided with a through hole which is communicated with the outside of the shell 1, so that the second piston 6 can not be hindered by air pressure when descending.

The distance between the top plate 22 and the inner bottom wall of the housing 1 is such that the contact pins 25 will not move to the upper surface of the circuit board until the positioning plate 117 contacts the circuit board. The connecting frame 23 does not contact the screw 114, the gear 115 or the positioning plate 117 when moving.

The bottom of the positioning plate 117 is fixedly connected with a limiting block 12, a limiting groove 13 is formed in the position of the bottom wall of the casing 1 corresponding to the limiting block 12, and the limiting block 12 is slidably connected in the corresponding limiting groove 13, so that the motion stability of the positioning plate 117 can be further ensured.

The outer peripheral surface of the vertical rod 112 is fixedly sleeved with a limit ring 14, and when the first spring 10 is in a natural state, the corresponding limit ring 14 is connected with the inner top wall of the corresponding placing cavity 5. An air inlet hole 15 is formed in the lower half portion of the side wall of the first groove 3, the air inlet hole 15 is communicated with the outside of the shell 1, a one-way valve 16 is arranged in the air inlet hole 15, and the one-way valve 16 can only allow air to enter the first groove 3 from the outside of the shell 1.

When the electric push rod 21 works reversely to drive the first piston 4 to move upwards, the second piston 6 moves upwards until the limiting ring 14 contacts with the top wall in the placing cavity 5, and the second piston 6 restores to the initial state. Then the first piston 4 continues to move, negative pressure is formed below the first piston 4, and gas enters the first groove 3 through the one-way valve 16, so that the gas pressure in the first groove 3 is restored to normal.

The implementation principle of the above embodiment is as follows:

first place the circuit board in casing 1 between two locating plates 117 on the diapire, then start electric putter 21, electric putter 21 drives roof 22 and connection frame 23 synchronous decline, roof 22 descends and drives spliced pole 24 and descends, spliced pole 24 drives first piston 4 and descends, first piston 4 descends and drives gaseous entering placing chamber 5, it descends to drive second piston 6, first spring 10 is compressed, second piston 6 drives montant 112 and descends, montant 112 drives spur rack 113 and descends, spur rack 113 drives gear 115 and rotates, gear 115 drives screw 114 and rotates, screw 114 rotates and drives thread bush 116 horizontal motion, thread bush 116 horizontal motion drives locating plate 117 horizontal motion until two locating plates 117 all contact the circuit board lateral wall. The first piston 4 continues to move downwards and can not drive the positioning plate 117 to move any more, the air pressure at the lower half part of the first groove 3 is increased, and the air is discharged out of the shell 1 through the pressure release valve 9.

The electric push rod 21 also drives the top plate 22 and the contact pins 25 to move downwards, and after the positioning plate 117 contacts the circuit board, the contact pins 25 contact with contacts on the top of the circuit board, so that the circuit board is tested.

Finally, the electric push rod 21 works reversely to drive the first piston 4 to move upwards, the second piston 6 moves upwards until the limiting ring 14 is contacted with the top wall in the placing cavity 5, and the second piston 6 restores to the initial state. Then the first piston 4 continues to move, negative pressure is formed below the first piston 4, and gas enters the first groove 3 through the one-way valve 16, so that the gas pressure in the first groove 3 is restored to normal.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An automatic test device of integrated circuit, includes casing (1) that one side opening set up and is located casing (1) first detection portion (2) of half, its characterized in that: two first grooves (3) have been seted up to inner bottom wall in casing (1), interference fit has first piston (4) in first groove (3), first piston (4) with detection portion (2) are connected, set up two in casing (1) diapire and place chamber (5), it has second piston (6) to place interference fit in chamber (5), place first one of chamber (5) and correspond air flue (7) have been seted up to intercommunication between first groove (3) the lower half, exhaust hole (8) have all been seted up to casing (1) relative both sides, exhaust hole (8) and correspondence first groove (3) lower half communicate with each other, casing (1) lateral wall corresponds the position of exhaust hole (8) is provided with relief valve (9), second piston (6) bottom and correspondence it is provided with first spring (10) to place between chamber (5) inner bottom wall, just second piston (6) top is provided with location fixed part (11).

2. An apparatus for automatic testing of an integrated circuit as recited in claim 1, wherein: location fixed part (11) include second groove (111), second groove (111) are seted up the diapire corresponds in casing (1) place the position of chamber (5), second piston (6) top fixedly connected with montant (112), montant (112) slide and pass diapire in second groove (111), montant (112) top fixedly connected with spur rack (113), casing (1) inner diapire fixedly connected with support frame, casing (1) one side inner wall rotates and is connected with screw rod (114), screw rod (114) rotate and pass corresponding support frame, the fixed cover of screw rod (114) outer peripheral face is equipped with gear (115), gear (115) and corresponding spur rack (113) mesh mutually, screw rod (114) outer peripheral face threaded connection has thread bush (116), thread bush (116) are kept away from the one end fixedly connected with locating plate (117) of casing (1) inner wall.

3. An apparatus for automatic testing of an integrated circuit as claimed in claim 2, wherein: locating plate (117) bottom fixedly connected with stopper (12), the diapire corresponds in casing (1) spacing groove (13) have been seted up to the position of stopper (12), stopper (12) sliding connection in corresponding in spacing groove (13).

4. An apparatus for automatic testing of an integrated circuit as recited in claim 1, wherein: detection portion (2) include a plurality of electric putter (21), electric putter (21) fixed connection in roof in casing (1), be provided with roof (22) in casing (1), roof (22) surface fixed connection has two connection frame (23), a plurality of electric putter (21) output all with roof (22) or connection frame (23) top is connected, connection frame (23) bottom corresponds the position fixedly connected with spliced pole (24) of first groove (3), spliced pole (24) bottom with correspond first piston (4) are connected, roof (22) one side slides and wears to be equipped with a plurality of contact pilotage (25), contact pilotage (25) outer peripheral face is provided with movable assembly (26).

5. An apparatus for automatic testing of an integrated circuit as in claim 4, wherein: the movable assembly (26) comprises a fixing ring (261), the fixing ring (261) is fixedly sleeved on the outer peripheral surface of the corresponding contact pin (25), a second spring (262) is arranged between the top plate (22) and the fixing ring (261), and the contact pin (25) penetrates through the corresponding second spring (262).

6. An apparatus for automatic testing of an integrated circuit as claimed in claim 2, wherein: the fixed cover of montant (112) outer peripheral face is equipped with spacing ring (14), works as when first spring (10) is in natural state, correspond spacing ring (14) with correspond place chamber (5) interior roof and be connected, inlet port (15) have been seted up to first groove (3) lateral wall lower half, inlet port (15) with casing (1) outside communicates with each other, be provided with check valve (16) in inlet port (15).