Circuit board testing equipment

Abstract

The present invention discloses a circuit board inspection device, comprising: a water conveying track, a CCD camera provided at the front end of the water conveying track, and a set of clamping cylinders installed on each side of the CCD camera; a lateral collection and conveying track provided at the rear end of the water conveying track, the horizontal height of the lateral collection and conveying track being lower than the horizontal height of the water conveying track; and a lifting and rotating assembly provided at the bottom of the rear end of the water conveying track opposite the lateral collection and conveying track, the lifting and rotating assembly being used to transfer defective products into the lateral collection and conveying track. The present invention uses the lifting and rotating assembly to transfer defective products into the lateral collection and conveying track, which requires manual removal of defective products to remove them from the water conveying track, but does not require manual removal.

Description

Technical Field

[0001] The present invention relates to the field of circuit board detection equipment, and in particular to a circuit board detection equipment. Background Art

[0002] At present, circuit boards are the carriers of electrical connections for electronic components and are widely used in various electrical fields. After the finished circuit boards are produced, they need to be tested to see whether they can operate normally in order to screen out defective ones. Circuit board testing equipment is now commonly used in industrial production to test circuit boards. In order to be suitable for different types of circuit board testing, a lifting structure is usually provided to facilitate adjustment of the position of the fixing plate of the circuit board testing head.

[0003] Existing tools, containing printed circuit boards, are transported to the inspection station via a conveyor belt. Clamping cylinders on either side clamp the tool in place, where a CCD camera takes photos for product quality inspection. Currently, defective products detected must be manually removed, which is time-consuming and labor-intensive. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a circuit board detection device, which solves the defect that defective products detected by the existing circuit board tooling need to be manually removed, which is time-consuming and labor-intensive.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A circuit board inspection device comprises: a water conveying track, a CCD camera disposed at the front end of the water conveying track, and a set of clamping cylinders mounted on either side of the CCD camera; a lateral collection and conveying track disposed at the rear end of the water conveying track, the lateral collection and conveying track being lower than the horizontal height of the water conveying track; and a lifting and rotating assembly disposed at the bottom of the rear end of the water conveying track opposite the lateral collection and conveying track, the lifting and rotating assembly being used to transfer defective products into the lateral collection and conveying track. The present invention utilizes a lifting and rotating assembly to transfer defective products into the lateral collection and conveying track, which would otherwise require manual removal of defective products from the water conveying track.

[0007] Optionally, the lifting and rotating assembly includes a lifting mechanism, and a fixed seat is provided on the top of the lifting mechanism.

[0008] Optionally, a rotating motor is installed on the fixing seat; the rotating motor is externally connected to a control unit, and the control unit is also electrically connected to a CCD camera. When the CCD camera detects a defective film, the control unit controls the rotating motor to start working.

[0009] Optionally, the output shaft of the rotating motor is connected to a rotating shaft, and a support sheet is provided on the top of the rotating shaft.

[0010] Optionally, a gear is mounted on the rotating shaft.

[0011] Optionally, one end of the lifting and rotating assembly is connected to a transfer assembly; the transfer assembly is located at the connection between the water flow conveying track and the lateral collection and conveying track; the transfer assembly includes a first compression cylinder, a first piston is provided in the first compression cylinder, the first piston is externally connected to a movable rod, the movable rod is externally connected to a rack, and the rack and the gear are engaged with each other.

[0012] Optionally, the transfer assembly further includes a second compression cylinder, a second piston is provided in the second compression cylinder, and the first compression cylinder is connected to the second compression cylinder through an air pipe.

[0013] Optionally, a spring is provided in the second piston, which is used to provide elastic force to move the second piston toward the side of the trachea. A conductive heating element is provided in the middle of the second piston, and conductive plates are respectively installed at both ends of the second compression cylinder, one of the conductive plates is connected to one pole of the external power supply, and the other conductive plate is connected to the other pole of the external power supply.

[0014] Optionally, the second piston is located on the outside of the conductive heating element and is connected to a piston rod, the piston rod is connected to an external clamping part, the clamping part includes a fixed end, a pair of clamping arms are connected to the fixed end, and air bags are provided on opposite surfaces of the pair of clamping arms. The piston rod is connected to the cavity of the second piston close to the spring side of the cylinder through a main pipe, the air bag is connected to the main pipe through a branch pipe, and a control valve is installed on the main pipe.

[0015] Optionally, the control valve includes a valve body, a sealing plate and a sealing member are provided in the valve body, a fixed shaft is installed on the sealing plate, the sealing member is installed on the sealing plate, an elastic member is provided on one side of the sealing plate, a through hole is provided on the sealing plate, an arc rod made of memory metal is provided on the elastic member, one end of the arc rod is connected to the fixed shaft, the arc rod is connected to an elastic stretching film, and one end of the stretching film is fixed to the sealing plate.

[0016] (3) Beneficial effects

[0017] 1. The present invention uses a lifting and rotating assembly to transfer defective products into a lateral collection and conveying track. It requires people to manually take out the defective products to remove them from the water conveying track, and no manual removal is required.

[0018] 2. In the present invention, when not squeezed, the second piston does not contact the conductive sheet, and the stretch film covers the through hole. The rotating motor drives the gear to rotate through the forward rotation of the rotating shaft, and then drives the rack to move, pushing the first piston in the first piston cylinder to move inward, so that the air pressure in the first piston cylinder increases, which is transmitted to the second movable plug, pushing the second piston to move, causing the clamping arm to extend forward, and causing both ends of the conductive heating element of the second piston to contact the conductive sheet at the same time, so that the conductive heating element starts to work, causing the temperature of the second piston cylinder to rise, and the temperature in the valve body to increase. The arc rod made of memory metal installed on the elastic member is deformed by heat, driving the stretch film to shrink, so that the through hole is not covered by the stretch film. At this time, the air flow is accelerated into the airbag, causing the airbag to expand, and the clamping arm to clamp the circuit board. The motor then rotates in the opposite direction through the shaft, pushing the first piston in the first piston cylinder outward, causing the second piston to retract inward. Under the action of the spring, the clamping arm retracts, and the circuit board is pulled toward the lateral collection and conveying track. At this time, the conductive heating element does not work. As the airbag temperature drops, the circuit board falls onto the lateral collection and conveying track, leaving the water conveying track, realizing automatic circuit board transportation. The airbag structure will not damage the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of the circuit board detection device according to embodiment 1 of the present invention;

[0020] Figure 2 The circuit board detection device of embodiment 1 of the present invention Figure 1 Front structural diagram of the lifting and rotating assembly;

[0021] Figure 3 This is a structural diagram of the first compression cylinder assembly of the circuit board detection device according to embodiment 1 of the present invention;

[0022] Figure 4 This is a structural diagram of the second compression cylinder assembly of the circuit board detection device according to embodiment 1 of the present invention;

[0023] Figure 5 is a cross-sectional structural diagram of a control valve of a circuit board detection device according to embodiment 1 of the present invention;

[0024] Figure 6 This is an assembly structure diagram of a sealing plate and a sealing member of a circuit board detection device according to embodiment 1 of the present invention.

[0025] The reference numerals in the figures are:

[0026] 1. Water conveying track, 2. CCD camera, 3. Clamping cylinder, 4. Lateral collection and conveying track, 5. Lifting and rotating assembly, 6. Lifting mechanism, 7. Fixed seat, 8. Rotating motor, 9. Rotating shaft, 10. Support plate, 11. Gear, 12. Transfer assembly, 13. First compression cylinder, 14. First piston, 15. Rack, 16. Second compression cylinder, 17. Second piston, 18. Air pipe, 19. Spring, 20. Conductive heating element, 21. Conductive sheet, 22. Piston rod, 23. Clamping part, 24. Fixed end, 25. Clamping arm, 26. Air bag, 27. Main pipe, 28. Branch pipe, 29. Control valve, 30. Valve body, 31. Sealing plate, 32. Sealing part, 33. Fixed shaft, 34. Elastic part, 35. Through hole, 36. Arc rod, 37. Stretch film, 38. Movable rod.

[0027] Specific implementation

[0028] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] CCD image sensors directly convert optical signals into analog current signals. These current signals undergo amplification and analog-to-digital conversion to enable image acquisition, storage, transmission, processing, and reproduction. CCD Operating Principle: CCDs can be functionally categorized into two main categories: linear array CCDs and area array CCDs. Linear array CCDs typically divide the internal electrodes of the CCD into arrays, each group known as a phase, and are subject to the same clock pulse. The number of phases required is determined by the internal structure of the CCD chip, and CCDs with different structures can meet the requirements of different applications. Linear array CCDs are available in single-channel and dual-channel configurations. Their photosensitive areas are MOS capacitors or photodiodes, and their production process is relatively simple. They consist of an array of photosensitive areas and a shift register scanning circuit. They are characterized by fast information processing, simple peripheral circuitry, and ease of real-time control. However, they capture limited information and cannot process complex images (a linear array CCD is shown in the figure to the right). Area array CCDs are much more complex, consisting of numerous photosensitive areas arranged in a square array and connected in a specific pattern to form a single device. They capture a large amount of information and can process complex images.

[0031] The front end and the rear end of the water conveying track in the present invention are determined according to the transportation direction of the circuit board.

[0032] Example 1

[0033] The technical solution adopted by the present invention is as follows:

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the present invention discloses a circuit board detection equipment, comprising: a water conveying track 1, a CCD camera 2 is provided at the front end of the water conveying track, and a group of clamping cylinders 3 are installed on each side of the CCD camera; a lateral collection conveying track 4 is provided at the rear end of the water conveying track, and the horizontal height of the lateral collection conveying track is lower than the horizontal height of the water conveying track; a lifting and rotating assembly 5 is provided at the bottom of the rear end of the water conveying track facing the lateral collection conveying track, and the lifting and rotating assembly is used to transfer defective products into the lateral collection conveying track.

[0035] The lifting and rotating assembly includes a lifting mechanism 6, with a fixed base 7 at its top. A rotating motor 8 is mounted on the fixed base. The output shaft of the rotating motor is connected to a rotating shaft 9, which has a support plate 10 at its top. A gear 11 is mounted on the rotating shaft. The rotating motor is connected to an external control unit, which is also electrically connected to a CCD camera. When the CCD camera detects a defective film, the control unit activates the rotating motor.

[0036] One end of the lifting and rotating assembly is connected to a transfer assembly 12. The transfer assembly includes a first compression cylinder 13, which houses a first piston 14. A movable rod 38 is externally connected to the first piston, which is externally connected to a rack 15. The rack and gear mesh with each other. The transfer assembly is located at the junction of the water conveying track and the lateral collection and conveying track. The transfer assembly also includes a second compression cylinder 16, which houses a second piston 17. The first compression cylinder is connected to the second compression cylinder via an air pipe 18.

[0037] A spring 19 is provided inside the second piston, which is used to provide elastic force to move the second piston toward the side of the trachea. A conductive heating element 20 is provided in the middle of the second piston, and conductive plates 21 are respectively installed at both ends of the second compression cylinder. One of the conductive plates is connected to one pole of the external power supply, and the other conductive plate is connected to the other pole of the external power supply.

[0038] The second piston is located outside the conductive heating element and is connected to a piston rod 22. The piston rod is connected to a clamping member 23. The clamping member includes a fixed end 24, and a pair of clamping arms 25 are connected to the fixed end. The opposite surfaces of the pair of clamping arms are provided with air bags 26. The piston rod is connected to the cavity of the second piston near the spring in the cylinder through a main pipe 27. The air bag is connected to the main pipe through a branch pipe 28. A control valve 29 is installed on the main pipe. The spring is used to provide elastic force to move the second piston away from the clamping arm. When not squeezed, the conductive heating element of the second piston does not contact the conductive sheet.

[0039] The control valve includes a valve body 30, which is provided with a sealing plate 31 and a sealing member 32. A fixed shaft 33 is mounted on the sealing plate, and the sealing member is mounted on the sealing plate. An elastic member 34 is provided on one side of the sealing plate, and a through hole 35 is provided on the sealing plate. An arc-shaped rod 36 made of memory metal is mounted on the elastic member. One end of the arc-shaped rod is connected to the fixed shaft. The arc-shaped rod is connected to an elastic stretch film 37, and one end of the stretch film is fixed to the sealing plate. The rotary motor of this embodiment can be controlled by a computer or a programmable logic chip.

[0040] During the implementation of this embodiment, when not squeezed, the second piston does not contact the conductive sheet, and the stretch film covers the through-hole. The rotating motor drives the gear to rotate through the forward rotation of the rotating shaft, which in turn drives the rack to move, pushing the first piston inward within the first piston cylinder, increasing the air pressure within the first piston cylinder, which is then transmitted to the second movable piston, pushing the second piston to move, causing the clamping arm to extend forward and causing both ends of the second piston's conductive heating element to contact the conductive sheet simultaneously, causing the conductive heating element to start operating, causing the temperature in the second piston cylinder to rise, which in turn increases the temperature within the valve body. The arc-shaped rod made of memory metal mounted on the elastic member is deformed by heat, driving the stretch film to contract, leaving the through-hole uncovered by the stretch film. At this time, airflow accelerates into the airbag, causing the airbag to expand, allowing the clamping arm to clamp the circuit board. Then the rotating motor rotates the shaft in the opposite direction, pushing the first piston in the first piston cylinder to move outward, causing the second piston to retract inward, and under the action of the spring, the clamping arm retracts, thereby pulling the circuit board toward the lateral collection and conveying track. At this time, the conductive heating element does not work. As the temperature of the airbag drops, the circuit board falls onto the lateral collection and conveying track, and leaves the water conveying track, realizing automatic transfer of the circuit board.

[0041] Example 2

[0042] The present invention discloses a circuit board detection device, comprising: a water conveying track, a CCD camera is provided at the front end of the water conveying track, and a group of clamping cylinders are installed on each side of the CCD camera; a lateral collection conveying track is provided at the rear end of the water conveying track, and the horizontal height of the lateral collection conveying track is lower than the horizontal height of the water conveying track; a lifting and rotating assembly is provided at the bottom of the rear end of the water conveying track facing the lateral collection conveying track, and the lifting and rotating assembly is used to transfer defective products into the lateral collection conveying track.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, directly or indirectly applied to other related technical fields, is also included in the scope of protection of the present invention.

Claims

1. A circuit board testing device, characterized in that: include: A water conveying track, a CCD camera is provided at the front end of the water conveying track, and a group of clamping cylinders are installed on each side of the CCD camera; a lateral collection and conveying track is provided at the rear end of the water conveying track, and the horizontal height of the lateral collection and conveying track is lower than the horizontal height of the water conveying track, and a lifting and rotating assembly is provided at the bottom of the rear end of the water conveying track opposite to the lateral collection and conveying track, and the lifting and rotating assembly is used to transfer defective products into the lateral collection and conveying track; the lifting and rotating assembly includes a lifting mechanism; a fixed seat is provided at the top of the lifting mechanism, and a rotating motor is installed on the fixed seat; the output shaft of the rotating motor is connected to the rotating shaft, and the rotating shaft is equipped with a gear; one end of the lifting and rotating assembly is connected to the transfer assembly; the transfer assembly is located at the connection between the water conveying track and the lateral collection and conveying track; the transfer assembly includes a first compression cylinder, a first piston is provided in the first compression cylinder, a movable rod is externally connected to the movable rod, a rack is externally connected to the rack, and the rack and the gear are meshed with each other; the transfer assembly also includes a second compression cylinder, a second piston is provided in the second compression cylinder, and the first compression The cylinder is connected to the second compression cylinder through the air pipe; a spring is provided in the second piston, and the spring is used to provide elastic force to make the second piston move toward the side of the air pipe; a conductive heating element is provided in the middle of the second piston, and conductive sheets are respectively installed at both ends of the second compression cylinder, one of the conductive sheets is connected to one pole of an external power supply, and the other conductive sheet is connected to the other pole of an external power supply; the second piston is located on the outside of the conductive heating element and is connected to a piston rod, and the piston rod is externally connected to a clamping member, and the clamping member includes a fixed end, and a pair of clamping arms are connected to the fixed end, and air bags are provided on the opposite surfaces of the pair of clamping arms. The piston rod is connected to the cavity of the second piston close to the spring side of the cylinder through a main pipe, and the airbag is connected to the main pipe through a branch pipe, and a control valve is installed on the main pipe; the control valve includes a valve body, a sealing plate and a sealing member are provided in the valve body, a fixed shaft is provided on the sealing plate, and the sealing member is installed on the sealing plate, an elastic member is provided on one side of the sealing plate, a through hole is provided on the sealing plate, and an arc rod made of memory metal is installed on the elastic member, one end of the arc rod is connected to the fixed shaft, the arc rod is connected to an elastic stretching film, and one end of the stretching film is fixed to the sealing plate.

2. A circuit board testing device according to claim 1, characterized in that: The rotating motor is externally connected to a control unit, and the control unit is also electrically connected to a CCD camera. When the CCD camera detects defective films, the control unit controls the rotating motor to start working.

3. A circuit board testing device according to claim 1, characterized in that: A supporting piece is provided on the top of the rotating shaft.

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