CN110568343A - A PCB board jacking device and test fixture - Google Patents

Abstract

The invention discloses a PCB lifting device which comprises a supporting plate and a base, wherein the supporting plate and the base are sequentially arranged from top to bottom, a vertical guide piece is arranged on the base and is connected with the supporting plate in a sliding mode, a rotating shaft is rotatably arranged on the base and is fixedly connected with a cam, and the cam can lift the supporting plate. The test fixture comprises a side detection group, an upper test group and a PCB jacking device, wherein the upper test group and the PCB jacking device are sequentially arranged from top to bottom, the upper test group comprises a plurality of test needles, and the side detection group is slidably connected with the base. During testing, the PCB is placed on the supporting plate, the rotating shaft rotates to enable the cam to rotate, the cam jacks the supporting plate to a set position, and the testing needle is pressed down to a circuit end point on the PCB. The layer board rises the process and can not take place the horizontal slip, and the location is accurate. During the plug wire, the side detects group towards PCB board horizontal migration, can once only accomplish the plug wire process, has improved the plug wire speed, avoids taking place to insert the wrong or condition of plugging.

Description

A PCB board jacking device and test fixture

technical field

The invention relates to the field of PCB board testing, in particular to a PCB board lifting device and a testing fixture.

Background technique

PCB board is also called printed circuit board, which has the advantages of small size, good performance and easy integration, so it is widely used in various electronic products. After the PCB board is prepared, multiple electronic components and circuit endpoints are arranged on the board, and the side is provided with a USB interface, a VGA interface, a network cable interface, and a power interface. Before assembling the PCB board into an electronic product, it is often necessary to test the PCB board, such as checking whether there is an open circuit, whether various interfaces are intact, and so on.

When some existing test equipment is tested, it is generally necessary to lift the PCB board upwards for a certain distance, manually insert the USB plug, VGA plug, network cable plug and power plug into the USB interface, VGA interface, network cable interface and power supply interface respectively, and then Use tests to detect line endpoints. When some existing equipment lifts the PCB board, the movement stability of the PCB board is poor. Wrong or missing wires, the efficiency is relatively low.

Contents of the invention

In order to solve at least one of the technical problems in the prior art, the present invention provides a PCB board lifting device and a test fixture, which can improve the stability of the PCB board lifting movement, accurately position the PCB board, and improve work efficiency.

The technical scheme that the present invention solves its technical problem adopts is:

A PCB board jacking device, comprising a supporting plate and a base arranged sequentially from top to bottom, the supporting plate is used to support workpieces, a vertical guide is provided on the base, and the vertical guide is slidably connected As for the supporting plate, a rotating shaft is rotatably installed on the base, and a cam is fixedly connected to the rotating shaft, and the cam can lift the supporting plate.

As an improvement of the above technical solution, two rotating shafts are arranged in parallel, two cams are fixedly connected to both ends of each rotating shaft, and the two cams at the same end are connected through a connecting rod.

As an improvement of the above technical solution, the base, the connecting rod and the two cams at the same end form a parallelogram mechanism.

As an improvement of the above technical solution, one of the rotating shafts is connected to the output end of the cylinder through a connecting block, one end of the connecting block is fixedly connected to one of the rotating shafts, and the other end is hinged to the output end of the cylinder, and the cylinder is hinged on the base .

A test fixture, including a side detection group, an upper test group arranged sequentially from top to bottom, and the above-mentioned PCB board lifting device, the upper test group includes a plurality of test pins, and the upper test group can be pressed down toward a workpiece The side detection group is slidably connected to the base so that the test needle contacts the line terminal on the workpiece, and the side detection group can move horizontally toward the workpiece to insert the workpiece.

As an improvement of the above technical solution, the upper test group further includes an upper cover, the upper cover is flipped and connected to the base, and the test needles are installed in the upper cover.

As an improvement of the above technical solution, the side detection group includes a first detector and a second detector, the first detector includes a power plug, and the second detector includes a VGA plug, a network cable plug and a USB plug, so When the workpiece is lifted by the PCB board lifting device, the side detection group can move horizontally toward the workpiece so that the power plug, VGA plug, network cable plug and USB plug are respectively inserted into the power interface, VGA interface, network cable interface and USB plug on the workpiece. interface.

As an improvement of the above technical solution, a positioning column for positioning the workpiece is arranged on the pallet.

As an improvement of the above technical solution, the upper cover is vertically provided with positioning pins, and the support plate is vertically provided with positioning holes for positioning and matching with the positioning pins.

As an improvement of the above technical solution, cooling fans are provided on the upper cover and the supporting plate.

The beneficial effects of the present invention have:

This test fixture has a PCB board lifting device. When the PCB board needs to be tested, the PCB board is placed on the pallet, and the rotation of the rotating shaft can drive the cam to rotate. The vertical guide moves upwards to the set position, and then the test needles of the upper test group are pressed down to the circuit endpoints on the PCB. The pallet will not slide horizontally during the rising process, and the PCB board is accurately positioned. It can protect the test needle and improve the reliability of the test. When inserting wires, the side detection group moves horizontally toward the PCB board, which can complete the wire insertion process at one time, which not only improves the wire insertion speed, but also avoids the occurrence of wrong or missing insertion during manual insertion.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment, wherein:

Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention;

Fig. 2 is a partial structural schematic diagram of the upper test group in the embodiment of the present invention;

Fig. 3 is a partial enlarged view of place A in Fig. 2;

Fig. 4 is a partial structural schematic diagram of an embodiment of the present invention;

Fig. 5 is a partial structural schematic diagram of the PCB board jacking device in the embodiment of the present invention;

Fig. 6 is a partial enlarged view of place B in Fig. 5;

Fig. 7 is a partial structural schematic diagram of the PCB board jacking device in the embodiment of the present invention;

Fig. 8 is a schematic structural diagram of a first detector in an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of a second detector in an embodiment of the present invention.

In the drawings: 1 pallet, 2 base, 3 vertical guide, 4 rotating shaft, 5 cam, 6 connecting rod, 7 connecting block, 8 cylinder, 9 side detection group, 10 upper test group, 11 test needle, 12 Upper cover, 13 positioning post, 14 positioning hole, 15 cooling fan, 16 rotating shaft mount, 17PCB board, 91 first detector, 911 power plug, 92 second detector, 921VGA plug, 922 network cable plug, 923USB plug.

Detailed ways

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 8 and Fig. 9, an embodiment of the present invention provides a test fixture, including a side detection group 9, an upper test group 10 and a PCB board arranged in sequence from top to bottom Jacking device, during testing, the PCB board 17 is lifted up to a preset height by the PCB board lifting device. Referring to Fig. 2 and Fig. 3, the upper test group 10 includes a plurality of test pins 11. During the test, the test pins 11 can be pressed down to the circuit terminals on the PCB board 17, see Fig. 4, Fig. 8 and Fig. 9, the side detection group 9 Slidingly connected on the base 2, the side detection group 9 includes a first detector 91 and a second detector 92, the first detector 91 includes a power plug 911, and the second detector 92 includes a VGA plug 921, a network cable plug 922 and a USB plug 923, the side of the PCB board 17 corresponds to a power supply interface, a VGA interface, a network cable interface and a USB interface. The USB plugs 923 are inserted into the power interface, the VGA interface, the network cable interface and the USB interface in one-to-one correspondence. This kind of wire insertion method can complete the wire insertion at one time, and there will be no situation of wrong or missing wires, which improves the shortcomings of manual wire insertion.

Referring to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the PCB board lifting device includes a pallet 1 and a base 2 arranged in sequence from top to bottom, and the PCB board 17 is placed on the pallet 1 during testing. The base 2 is provided with a plurality of vertical guides 3, and the vertical guides 3 are slidably connected to the supporting plate 1. When the supporting plate 1 moves upwards, it moves along the vertical guiding members 3, which can prevent the horizontal sliding of the supporting plate 1, so that The PCB board 17 is well positioned. Referring to Fig. 5 and Fig. 6, two rotating shaft mounting seats 16 are arranged in parallel on the base 2. In this embodiment, the rotating shaft mounting seats 16 are rod-shaped, and two rotating shafts 4 are installed in parallel on the rotating shaft mounting seats 16. The two rotating shaft mounts 16 and the two rotating shafts 4 form a rectangular frame. Further referring to Fig. 7, two cams 5 are respectively fixedly connected to the two ends of each rotating shaft 4, and the two cams 5 at the same end are connected by a connecting rod 6, and the base 2, the connecting rod 6 and the two cams 5 at the same end constitute The parallelogram mechanism, when one of the cams 5 rotates, can make all the cams 5 rotate synchronously, and all the cams 5 lift the supporting plate 1 at the same time, so that the lifting process of the supporting plate 1 is stable, and it can ensure that the supporting plate 1 is always kept in contact with the base 2 Parallel, the rising process is not easy to get stuck.

Referring further to Fig. 5, one of the rotating shafts 4 is connected to the output end of the cylinder 8 through the connecting block 7, one end of the connecting block 7 is fixedly connected to one of the rotating shafts 4, and the other end is hinged to the output end of the cylinder 8, and the cylinder 8 is hinged on the base 2 on. The reciprocating motion of the cylinder 8 in the push and return strokes makes the cam 5 swing back and forth, and the reciprocating swing of the cam 5 makes the supporting plate 1 rise and fall.

Referring to Fig. 1 and Fig. 4, in order to avoid damage to the test pin 11, the upper test group 10 also includes an upper cover 12 that is flipped and connected to the base 2. The test pins 11 contact the circuit terminals on the PCB board 17 . Referring further to FIG. 4 , the supporting board 1 is provided with a plurality of positioning columns 13 , which can position the PCB board 17 so that the PCB board 17 is accurately positioned on the supporting board 1 during the wire insertion process or the testing process. In addition, the upper cover 12 is also vertically provided with a positioning pin, and the supporting plate 1 is vertically provided with a positioning hole 14 for positioning with the positioning pin. If the supporting plate 1 slips slightly, the positioning pin cannot be accurately inserted into the positioning hole 14. In this way, the upper cover 12 cannot be closed, which can prevent the test needle 11 from being damaged due to contact with other positions. Referring to Fig. 4, a cooling fan 15 is provided on the upper cover 12 and the supporting plate 1, so as to avoid the test result being affected by the high internal temperature during the test, or some electronic components on the PCB board 17 being damaged due to the high temperature .

It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions among the components in a specific posture. If the specific posture changes, the directional indications will also be corresponding change accordingly. In addition, descriptions such as “first” and “second” in the embodiments of the invention are for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

The above are only preferred implementations of the present invention, but the present invention is not limited to the above-mentioned embodiments, as long as they achieve the technical effect of the present invention by any same or similar means, they should all belong to the protection scope of the present invention.

Claims (10)

1. a PCB board jacking device, is characterized in that: comprise supporting plate (1) and base (2) that are arranged successively from top to bottom, described supporting plate (1) is used for bearing workpiece, and described base ( 2) A vertical guide (3) is arranged on it, and the vertical guide (3) is slidably connected to the supporting plate (1), and a rotating shaft (4) is installed on the base (2), and the rotating shaft (4) A cam (5) is fixedly connected, and the cam (5) can lift the supporting plate (1). 2. A kind of PCB board lifting device according to claim 1, characterized in that: said rotating shaft (4) is provided with two in parallel, and the two ends of each rotating shaft (4) are respectively fixedly connected with two Two cams (5) at the same end are connected by a connecting rod (6). 3. A PCB board jacking device according to claim 2, characterized in that: the base (2), the connecting rod (6) and the two cams (5) at the same end form a parallelogram mechanism. 4. A kind of PCB board lifting device according to claim 2 or 3, characterized in that: one of the rotating shafts (4) is connected to the output end of the cylinder (8) through a connecting block (7), and the connecting block One end of (7) is fixedly connected to one of the rotating shafts (4), and the other end is hinged to the output end of the cylinder (8), and the cylinder (8) is hinged on the base (2). 5. A test fixture, characterized in that: it includes a side detection group (9) and an upper test group (10) arranged sequentially from top to bottom and the PCB board jacking device according to any one of claims 1-4 , the upper test group (10) includes a plurality of test needles (11), the upper test group (10) can be pressed down toward the workpiece so that the test needles (11) contact the line endpoints on the workpiece, the side detection group (9) The base (2) is slidably connected, and the side detection group (9) can move horizontally toward the workpiece to insert the workpiece. 6. A test fixture according to claim 5, characterized in that: the upper test group (10) also includes an upper cover (12), and the upper cover (12) is flipped and connected to the base (2), the The test pin (11) is installed in the upper cover (12). 7. A test fixture according to claim 5 or 6, characterized in that: the side detection group (9) includes a first detector (91) and a second detector (92), and the first detection The detector (91) includes a power plug (911), the second detector (92) includes a VGA plug (921), a network cable plug (922) and a USB plug (923), and the PCB board jacking device lifts the workpiece , the side detection group (9) can move horizontally towards the workpiece so that the power plug (911), the VGA plug (921), the network cable plug (922) and the USB plug (923) are respectively inserted into the power interface and the VGA interface on the workpiece. , network cable interface and USB interface. 8. A test fixture according to claim 5 or 6, characterized in that: the supporting plate (1) is provided with a positioning column (13) for positioning the workpiece. 9. A test fixture according to claim 6, characterized in that: the upper cover (12) is vertically provided with positioning pins, and the support plate (1) is vertically provided with positioning pins that cooperate with the positioning pins hole (14). 10. A test fixture according to claim 6, characterized in that: the upper cover (12) and the supporting plate (1) are both provided with cooling fans (15).