Mounting frame structure of large-size printed circuit board defect detector

Abstract

The utility model discloses a mounting rack structure of a defect detector for a large-size printed circuit board, which relates to the field of detection instruments and comprises a base, a detector is mounted at the top of the base, a control display is arranged on one side of the base, a detection table is connected to the bottom end of the base, four groups of T-shaped tables are arranged at the top of the detection table, and the T-shaped tables are arranged on the bottom end of the base. A moving groove is formed in the top of the detection table, a groove is formed in the top end of the T-shaped table, an extrusion table is movably connected into the groove, and a first double-shaft motor and a second double-shaft motor are arranged in the base. According to the utility model, the two groups of double-shaft motors are used for driving successively, so that the screw rod drives the T-shaped table to approach to the middle part of the detection table, the two opposite groups of extrusion tables extrude and fix the PCB, and then the other two groups of extrusion tables extrude the PCB from the side surface, so that the two opposite groups of extrusion tables slide in the chutes of the T-shaped table; therefore, the PCB can move to a detection area in the center of the detection bench.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of detection instrument, concretely is a kind of mounting rack structure of large-size printed wiring board defect detector. BACKGROUND

[0002] Printed circuit board (PCB) is a kind of basic component widely used in electronic products, it is connected together by arranging conductive circuit on insulating substrate to form circuit with various electronic components, and after completing the production of PCB, the circuit on PCB surface is detected by needing printed circuit board defect detector, printed circuit board defect detector is a kind of equipment specially used for detecting the defect on PCB, it usually utilizes image processing technology and automatic detection system, identifies the welding defect, short circuit, open circuit, misplacement etc. on PCB.

[0003] In production workshop, printed circuit board defect detector is installed on a mounting rack capable of making it slide displacement detection, aims at supporting and positioning large-size PCB to carry out high-precision detection, support platform provides stable basis, ensures that PCB does not move or vibrate during detection process, and technical personnel ensure that each key area of PCB can accurately enter the detection area of detector by aligning the positioning mark on mounting rack, then firmly fix PCB on mounting rack to prevent displacement during detection process, so as to improve the precision and efficiency of detection.

[0004] In existing printed circuit board defect detector, the placement of PCB usually needs manual correction position, so that PCB is located directly below printed circuit board defect detector, so that the surface of PCB can be accurately detected, but this way also increases the operation time and labor intensity of personnel. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a kind of mounting rack structure of large-size printed wiring board defect detector to solve the technical problem that personnel manually adjust the position of printed wiring board when using automatic optical detection imager to detect the defect of large-size printed wiring board.

[0006] To achieve the above object, the utility model provides the following technical scheme: A mounting rack structure of large -size printed wiring board defect detector, including base, the top of base is installed with detector, one side of base is provided with control display, the bottom of base is connected with detection table, and the top of detection table is provided with four groups T shape platform, the top of detection table is equipped with moving groove, the top of T shape platform is equipped with recess, and the inside of recess is movably connected with extrusion platform, the inside of base is provided with first double -shaft motor and second double -shaft motor, the output of first double -shaft motor is connected with first screw rod, and the bottom of first screw rod is connected two groups T shape platform, the output of second double -shaft motor is connected with second screw rod, and second screw rod is connected with two groups T shape platform.

[0007] By adopting the above technical scheme, the problem that personnel manually adjusts the position of the circuit board when the automatic optical detection imager detects defects of the large-size printed circuit board is solved, the T-shaped tables are driven by the two double-shaft motors in sequence, the T-shaped tables are driven by the first screw rod to move towards the middle of the detection table, the printed circuit board is first extruded and fixed by the relative two extrusion tables, and then the other two extrusion tables extrude the PCB from the side, so that the relative two extrusion tables slide in the sliding grooves of the T-shaped tables, the PCB can be moved to the detection area in the center of the detection table, the detection precision and efficiency are improved, the workload of personnel is reduced, and the device can be applied to circuit boards of different sizes.

[0008] The utility model further sets up, the both ends of first screw rod and second screw rod are all set up as positive and negative threads, and first screw rod and second screw rod are connected with four groups T shape platform threadedly.

[0009] By adopting the above technical scheme, the two screw rods are driven to rotate by the two motors, the threads at the two ends of the two screw rods are set to rotate in different directions, the first screw rod drives the two T-shaped tables to move towards or away from each other when rotating, and the distance between the two T-shaped tables can be adjusted by personnel.

[0010] The utility model further sets up, one side of extrusion platform is installed with rubber pad, and rubber pad bottom is higher than the top of detection table.

[0011] By adopting the above technical scheme, the rubber pad is installed on one side of the extrusion platform, when the extrusion platform contacts the PCB, the rubber pad can reduce the damage of the extrusion platform to the PCB, and the bottom of the rubber pad is slightly higher than the detection table, so that the extrusion platform can extrude and fix the PCB and reduce the friction between the rubber pad and the detection table when extruding the PCB.

[0012] The utility model further sets up, the both sides of extrusion platform inside are movably installed with ball, and the inside of T shape platform is equipped with sliding groove matched with ball.

[0013] By adopting the technical scheme, the extrusion table slides in the sliding groove on the top of the T-shaped table, and a plurality of rolling balls are movably arranged on the two sides of one end of the extrusion table, so that the sliding resistance of the extrusion table in the sliding groove is reduced.

[0014] The utility model further sets up, the bottom top both sides are provided with electromagnetic slide rail, and the detector slides on the electromagnetic slide rail.

[0015] By adopting the technical scheme, the detector is installed on the top of the base and slides on the electromagnetic slide rail, so that the detector can be displaced on the electromagnetic slide rail by the detection personnel through the control of the display, and the PCB placed on the operation table can be detected.

[0016] The utility model further sets up, the bottom of extrusion table does not contact with the top of detection table, can make extrusion table reduce the contact area with detection table when moving.

[0017] By adopting the technical scheme, since the bottom surface area of the extrusion table is large, if the extrusion table contacts with the top of the detection table, friction will be generated between the extrusion table and the detection table when the extrusion table slides in the groove, hindering the movement of the extrusion table in the groove.

[0018] The utility model further sets up, the inner wall of mobile groove is attached with the outer wall of T-shaped table, and the T-shaped table slides in the mobile groove.

[0019] By adopting the technical scheme, the first double-shaft motor drives the first screw rod to rotate, so that the T-shaped table slides in the mobile groove, and the mobile groove limits the T-shaped table to avoid deviation during displacement.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] 1、 the utility model discloses a T-shaped table, extrusion table, first double-shaft motor and second double-shaft motor are set up, solve the problem that personnel manually adjusts the position of circuit board when using automatic optical detection imaging appearance to detect the defect of large size printed circuit board, drive by two groups of double-shaft motors, so that the screw rod drives the T-shaped table to close to the middle of detection table, relatively two groups of extrusion table extrude fixed printed circuit board, then another two groups of extrusion table extrude PCB from the side, so that relatively two groups of extrusion table slide in the sliding groove of T-shaped table, so that PCB can be displaced to the detection area of the center of detection table, improve the precision and efficiency of detection, reduce the work load of personnel, and also applicable to circuit board of different size;

[0022] 2, the utility model discloses a recess, protruding and sliding slot are set up, first have two groups of horizontal direction extrusion platform extrusion fixed PCB, make that PCB can not horizontal direction displacement, then by the extrusion platform of vertical direction group slowly extrude PCB, two groups of horizontal direction extrusion platform can slide in the sliding slot of T-shaped table top in vertical direction, the two groups of horizontal direction extrusion platform that fixed with PCB are pushed displacement in vertical direction, until the side surface of PCB contacts another group of extrusion platform of vertical direction and stops displacement when, four groups of extrusion platform extrude four sides of PCB respectively, and the PCB is fixed, and the PCB is displaced to the center detection area of detection table through the pushing of four groups of extrusion platform. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is whole schematic diagram of the device of the utility model;

[0024] Figure 2 It is pushing schematic diagram of the device of the utility model;

[0025] Figure 3 It is internal structure diagram of the device of the utility model;

[0026] Figure 4 It is extrusion platform structure diagram of the utility model;

[0027] Figure 5 It is T-shaped table structure diagram of the utility model.

[0028] In the drawing: 1, base;2, detector;21, electromagnetic slide rail;3, detection table;31, moving groove;4, T-shaped table;41, recess;42, sliding slot;5, extrusion platform;51, rubber pad;52, ball;6, control display;7, first double-shaft motor;71, first screw;8, second double-shaft motor;81, second screw. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0030] The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0031] A mounting frame structure of a large-size printed circuit board defect detector, like Figure 1 - Figure 5As shown, including the base 1, the top of the base 1 is provided with detection instrument 2, one side of the base 1 is provided with control display 6, the bottom end of the base 1 is connected with detection table 3, and the top of the detection table 3 is provided with four groups of T-shaped table 4, the top of the detection table 3 is provided with moving groove 31, the top end of the T-shaped table 4 is provided with recess 41, and the inside of the recess 41 is movably connected with extrusion table 5, the inside of the base 1 is provided with first double shaft motor 7 and second double shaft motor 8, the output end of the first double shaft motor 7 is connected with first screw rod 71, and the first screw rod 71 is connected with the bottom of two groups of T-shaped table 4, the output end of the second double shaft motor 8 is connected with second screw rod 81, and the second screw rod 81 is connected with two groups of T-shaped table 4, solve the problem of manual adjustment of the position of the circuit board when using automatic optical detection imaging instrument to detect the defects of large size printed circuit board, through the driving of two groups of double shaft motors, the screw rod drives the T-shaped table 4 to close to the middle of the detection table 3, the relative two groups of extrusion tables 4 extrude and fix the printed circuit board, and then the other two groups of extrusion tables extrude the PCB from the side, so that the relative two groups of extrusion tables 5 slide in the sliding groove 42 of the T-shaped table 4, so that the PCB can be displaced to the detection area in the center of the detection table 3, improve the detection precision and efficiency, reduce the workload of personnel, and also applicable to different size circuit boards.

[0032] Please refer to Figure 4 , the two ends of the first screw rod 71 and the second screw rod 81 are provided with positive and negative threads, and the first screw rod 71 and the second screw rod 81 are threadedly connected with the four groups of T-shaped table 4, the two screw rods are driven to rotate, and since the two ends of the two screw rods are provided with threads of different rotation directions, the first screw rod 71 drives the two groups of T-shaped table 4 to approach or move away from each other when rotating, which is convenient for personnel to adjust the distance between the extrusion tables and the PCB.

[0033] Please refer to Fig. 1-3, one side of the extrusion table 5 is provided with rubber pad 51, and the bottom of the rubber pad 51 is higher than the top of the detection table 3, the rubber pad 51 is installed on one side of the extrusion table 5, when the extrusion table 5 contacts with the PCB, the rubber pad 51 can reduce the damage of the extrusion table 5 to the PCB, and at the same time, the bottom of the rubber pad 51 is slightly higher than the detection table 3, so that the extrusion table 5 can extrude and fix the PCB when extruding the PCB, and also can reduce the friction between the rubber pad 51 and the detection table 3.

[0034] Please refer to Figure 4 and Figure 5 , two sides of the inside of the extrusion table 5 are movably installed with balls 52, and the inside of the T-shaped table 4 is provided with sliding groove 42 matched with the balls 52, the extrusion table 5 slides in the sliding groove 42 on the top of the T-shaped table 4, the two sides of one end of the extrusion table 5 are movably installed with multiple balls 52, and the setting of the balls 52 reduces the resistance of the extrusion table 5 sliding in the sliding groove 42.

[0035] Please refer to Figure 1The base 1 is provided with electromagnetic slide rails 21 on the top of two sides, and the detector 2 slides on the electromagnetic slide rails 21, the detector 2 is installed on the top of the base 1 and slides on the electromagnetic slide rails 21, so that the detection personnel can control the display 6 to operate the detector 2 to displace on the electromagnetic slide rails 21, and the PCB placed on the operation table 3 can be detected.

[0036] Please refer to Figure 1 and Figure 2 The bottom of the extrusion table 5 is not in contact with the top of the detection table 3, so that the contact area between the extrusion table 5 and the detection table 3 can be reduced when the extrusion table 5 moves, and since the surface area of the bottom of the extrusion table 5 is large, if the bottom of the extrusion table 5 is in contact with the top of the detection table 3, friction will be generated between the extrusion table 5 and the detection table 3 when the extrusion table 5 slides in the groove 41, which will hinder the movement of the extrusion table 5 in the groove 41.

[0037] Please refer to Figure 2 The inner wall of the moving groove 31 is in close contact with the outer wall of the T-shaped table 4, the T-shaped table 4 slides in the moving groove 31, the first double-shaft motor 7 drives the first lead screw 71 to rotate, so that the T-shaped table 4 slides in the moving groove 31, and the moving groove 31 limits the T-shaped table 4 to avoid deviation during displacement.

[0038] The working principle of the utility model is as follows: first, the PCB is placed on the detection table 3, the personnel controls the first double-shaft motor 7 and the second double-shaft motor 8 to operate in sequence through the control display 6, the first double-shaft motor 7 drives the first lead screw 71 to rotate, so that the two groups of T-shaped tables 4 in the vertical direction are close to each other, the two groups of extrusion tables 5 in the vertical direction extrude and fix the PCB, so that the PCB cannot displace in the vertical direction, then the second double-shaft motor 8 drives the second lead screw 81 to rotate, so that the two groups of T-shaped tables 4 in the horizontal direction are close to each other, when the one group of extrusion tables 5 in the horizontal direction contacts the PCB, the two groups of extrusion tables 5 in the vertical direction are pushed, so that the two groups of extrusion tables 5 in the vertical direction displace and slide in the grooves 41 formed in the top of the T-shaped table 4 in the horizontal direction, until the PCB contacts the other group of extrusion tables 5 in the horizontal direction, at this time, the PCB is extruded and displaced to the center detection area of the detection table 3 by the four groups of extrusion tables 5, and then the personnel controls the detector 2 to displace on the electromagnetic slide rails 21 through the control display 6, so that the detector 2 is displaced above the detection area of the detection table 3, the PCB is scanned and detected comprehensively, and the personnel can know the detection result of the PCB through the display screen of the control display 6.

[0039] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A mounting rack structure of a large-sized printed wiring board defect detector comprising a base (1), characterized in that: The top of the base (1) is provided with a detector (2), one side of the base (1) is provided with a control display (6), the bottom end of the base (1) is connected with a detection table (3), and the top of the detection table (3) is provided with four groups of T-shaped tables (4), the top of the detection table (3) is provided with a moving groove (31), the top end of the T-shaped table (4) is provided with a groove (41), and the inner side of the groove (41) is movably connected with an extrusion table (5), the inside of the base (1) is provided with a first double-shaft motor (7) and a second double-shaft motor (8), the output end of the first double-shaft motor (7) is connected with a first lead screw (71), and the bottom of the two groups of T-shaped tables (4) is connected with the first lead screw (71), the output end of the second double-shaft motor (8) is connected with a second lead screw (81), and the second lead screw (81) is connected with the two groups of T-shaped tables (4).

2. The mounting rack structure of a large-sized printed wiring board defect inspection apparatus according to claim 1, wherein: Both ends of the first lead screw (71) and the second lead screw (81) are provided with reverse threads, and the first lead screw (71) and the second lead screw (81) are threadedly connected with the four groups of T-shaped tables (4).

3. The mounting rack structure of a large-sized printed wiring board defect inspection apparatus according to claim 1, wherein: One side of the extrusion table (5) is provided with a rubber pad (51), and the bottom of the rubber pad (51) is higher than the top of the detection table (3).

4. The mounting rack structure of a large-sized printed wiring board defect inspection apparatus according to claim 1, wherein: The two sides of the extrusion table (5) are movably provided with a plurality of balls (52), and the inside of the T-shaped table (4) is provided with a sliding groove (42) matched with the balls (52).

5. The mounting rack structure of a large-sized printed wiring board defect inspection apparatus according to claim 1, wherein: The top of the base (1) is provided with an electromagnetic slide rail (21), and the detector (2) slides on the electromagnetic slide rail (21).

6. The mounting rack structure of a large-sized printed wiring board defect inspection apparatus according to claim 1, wherein: The bottom of the extrusion table (5) is not in contact with the top of the detection table (3), so that the contact area between the extrusion table (5) and the detection table (3) is reduced when the extrusion table (5) moves.

7. The mounting rack structure of a large-sized printed wiring board defect inspection apparatus according to claim 1, wherein: The inner wall of the moving groove (31) is matched with the outer wall of the T-shaped table (4), and the T-shaped table (4) slides in the moving groove (31).

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