A clamping plate module for flying probe test machine

Abstract

The present invention relates to the field of circuit board detection, and provides a clamping plate module for a flying probe tester, including: a driving device; a first movable plate, both ends of which are connected to the driving device transmission end; a second movable plate, both ends of which are connected to the driving device transmission end; a clamping module, which is respectively installed on the first movable plate and the second movable plate; a plurality of movable clamping units are arranged on the clamping module, and movable free clamping ends are arranged on the movable clamping units, and a plurality of plates are clamped by the free clamping ends of the arranged movable clamping units. The present invention clamps the plate to be tested by installing movable clamping units that can work independently of each other on the first movable plate and the second movable plate. When an abnormality occurs during the flying probe test of the plate, the plate is ejected accordingly to wait for retesting, while other untested plates can continue to be tested to meet the use requirements.

Claims

1. A clamping plate module for a flying probe tester, comprising: A bidirectional transmission drive device (11), the drive device (11) comprising: an outer frame (111) for installation on a flying needle device; two first screw rods (112) rotatable in the outer frame (111); a first motor (113) installed on both sides of the outer frame (111), the two first motors (113) respectively driving two different first screw rods (112) to rotate; a first movable plate (12) with two ends connected to the transmission end of the drive device (11); a second movable plate (13) with two ends connected to the transmission end of the drive device (11); the first movable plate (12) and the second movable plate (13) 13) is driven by the driving device (11) to achieve the purpose of separation or approaching each other; it is characterized in that it also includes: a clamping module (21), which is respectively installed on the first movable plate (12) and the second movable plate (13); a plurality of movable clamping units (22) are arranged on the clamping module (21), and a movable free clamping end is provided on the movable clamping unit (22), and a plurality of plates are clamped by the free clamping ends on the arranged movable clamping units (22). After a plate is detected to be abnormal, one of the free clamping ends corresponding to the two ends of the plate releases the clamped plate and makes the plate pop out in an inclined state; The movable clamping unit (22) comprises: a fixed shaft (31) installed in the clamping module (21); a plurality of clamping wheels (32), the plurality of clamping wheels (32) being rotatably connected in series on the fixed shaft (31); a clamping groove (321) for clamping a plate is provided on the clamping wheel (32); a protruding and extending swinging portion (33) is provided on a side of the clamping wheel (32) opposite to the clamping groove (321); a pulling device installed in the clamping module (21) for pulling the swinging portion (33) to swing; when the movable clamping unit (22) is distributed at two positions, the first movable plate (12) and the second movable plate (13), one of the clamping grooves (321) at the two positions is a clamping groove capable of allowing a plate to be inserted, and the clamping groove (321) at the other position is an anti-deflection groove that can just abut against the edge of the plate and does not perform a clamping operation; The pulling device comprises: an electromagnet (34) installed in the clamping module (21) in accordance with the number of the movable clamping units (22); an iron core (36) movably inserted in the electromagnet (34), and a spring (35) is sleeved between the iron core (36) and the electromagnet (34); A pull rod (37) is installed at the end of the iron core (36), and both ends of the pull rod (37) are connected to the swing part (33).

2. The clamping plate module for a flying probe tester according to claim 1, characterized in that: The movable clamping unit (22) includes: a U-shaped top plate (47) arranged and installed in the clamping module (21). One side of the U-shaped top plate (47) is fixedly installed with the clamping module (21), and there is a slit (474) left between the other side and the clamping module (21). A groove (471) is provided on the middle surface of the U-shaped top plate (47). A curved thickening part (472) is provided on one side of the U-shaped top plate (47) close to the slit (474). A protruding fixing rod (473) is provided on one side of the U-shaped top plate (47) close to the slit (474); a pulling device installed in the clamping module (21) for pulling the fixing rod (473). As the fixing rod (473) is pulled, the part of the U-shaped top plate (47) on the side close to the slit (474) bends in the pulling direction.

3. The clamping plate module for a flying probe tester according to any one of claims 1 to 2, characterized in that: It further includes: An electronic screen (51) installed on the second movable plate (13) according to the number of the movable clamping units (22).

4. The clamping plate module for a flying probe tester according to claim 2, characterized in that: It further includes: A movable slot (371) is opened on the swinging part (33), and both ends of the pull rod (37) move within the range of being stuck in the movable slot (371).

5. The clamping plate module for a flying probe tester according to claim 4, characterized in that: It further includes: A resisting plate (38) is installed on one side inside the clamping module (21), and the end of the resisting plate (38) abuts against the swinging part (33). When the swinging part (33) contacts the resisting plate (38), the clamping groove (321) of the clamping wheel (32) is in a horizontal and vertical state; filling blocks (39) are symmetrically installed inside the clamping module (21) and are attached to the outer curved surface of the clamping wheel (32); a soft rubber layer (310) is arranged on the surface of the clamping groove (321) of the clamping wheel (32).

6. The clamping plate module for a flying probe tester according to claim 2, characterized in that: The pulling device includes: a second motor (41) installed inside the clamping module (21); a second lead screw (43) installed inside the clamping module (21), and the second lead screw (43) is connected to the second motor (41) through a pulley set (42); a sliding table (44) connected to the second lead screw (43) and moving inside the clamping module (21) as the second lead screw (43) rotates; a telescopic push block (45) installed at the bottom of the sliding table (44), and a ring sleeve (461) is installed on the movable rod (46) of the telescopic push block (45); when the ring sleeve (461) moves along with the sliding table (44), it can slide and be stuck on the fixing rod (473) at the corresponding position of the U-shaped top plate (47).

7. The clamping plate module for a flying probe tester according to claim 6, characterized in that: It further includes: A first limiting plate (48) installed on one side inside the clamping module (21); A second limiting plate (49) installed on the other side inside the clamping module (21); the tops of the first limiting plate (48) and the second limiting plate (49) are in sliding contact with the edge part (441) of the sliding table (44), and the bottom of the first limiting plate (48) can contact the top edge of the side where the U-shaped top plate (47) bends movably.

8. The clamping plate module for a flying probe tester according to any one of claims 4 to 7 provides a system combination scheduling method for a movable clamping unit of a flying probe tester, characterized in that: It includes the following steps: S1, the movable clamping units (22) at two upper and lower positions aligned with each other are bound into one group, and multiple groups are arranged in sequence; S2. Input the plate size information into the test system, and match the plate width according to the maximum clamping width of a single set of active clamping units (22). If the plate width is within the maximum clamping range of a single set of active clamping units (22), one set is called; if the plate width is within the cumulative maximum clamping range of two sets of active clamping units (22), two sets are called, and so on; S3, the plate is released after being clamped by the corresponding movable clamping unit (22); S4. When the flying probe tester detects the plate and a corresponding plate detection error is reported, the corresponding movable clamping unit (22) releases the clamped plate, so that the detection plate body pops out in an inclined state.

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