Testing equipment for circuit board

Abstract

The utility model discloses test equipment of a circuit board, which relates to the technical field of test equipment and comprises a jig and a positioning device, a test needle is positioned in a needle hole to protect the test needle from being damaged and prevent the surface of the circuit board from rubbing the test needle when the circuit board is placed, and the positioning device comprises a positioning block and a pushing block, the positioning block and the pushing block are located on the upper surface of the protection piece, the pushing block can push a circuit board and enable the circuit board to abut against the positioning block, the circuit board is fixed in one direction, the number of the positioning devices is two, and the two positioning devices are arranged in the length direction and the width direction of the protection piece respectively. The circuit board can be accurately positioned on the jig, the test accuracy of the circuit board is improved, the circuit board is pressed and touched by the pressing table, the protection piece is pressed to move downwards, so that the test needles penetrate out of the upper surface of the protection piece, the circuit layer of the circuit board can be in contact with the test needles, and the test of the circuit board is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a testing equipment for a circuit board. Background Art

[0002] Generally, PCB boards are also called printed circuit boards. Inspection is a very important part of the printed circuit board manufacturing process. Through inspection, defects such as open circuits and broken circuits that are difficult to detect visually can be discovered, ensuring that the electrical performance and connection of the circuit board meet the design requirements, and avoiding waste and losses in the subsequent production process. At present, the fixture test of the circuit board is carried out by making a test nail bed dedicated to the circuit board. By pressing down to make the pads or test points on the circuit board contact the nail bed, the resistance value and other values ​​of the circuit board are detected. However, the fixture test must set positioning holes on the circuit board and positioning pins on the test fixture to ensure accurate contact between the circuit board and the test nail bed. There is a gap between the positioning holes and the positioning pins, which may cause poor contact between the test points of the circuit board and the test nail bed, resulting in inaccurate test results. Frequent testing of circuit boards can easily cause wear and deformation of the positioning holes and positioning pins, which is not conducive to the accuracy of circuit board testing. Utility Model Content

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a circuit board testing device to achieve accurate positioning of the circuit board during detection and improve the accuracy of circuit board testing.

[0004] According to an embodiment of the present utility model, a testing device for a circuit board is provided, comprising: a jig and a positioning device, the jig is provided with a protective member and a needle bed, the protective member is provided with a plurality of pinholes, the needle bed is provided with a plurality of test needles, the test needles are located in the pinholes, the protective member can move downward under pressure so that the test needles can pass through the upper surface of the protective member, the circuit layer of the circuit board contacts the upper surface of the protective member, a pressing platform is provided above the jig, the pressing platform presses the circuit board so that the circuit layer of the circuit board contacts the plurality of test needles; the positioning device comprises a positioning block and a pushing block, the positioning block and the pushing block are located on the upper surface of the protective member, the positioning block and the pushing block are located on opposite sides of the circuit board, the pushing block can push the circuit board and make it abut against the positioning block, the positioning device is provided with two groups, and the two groups of positioning devices are arranged along the length direction and width direction of the protective member respectively.

[0005] The circuit board testing device described in the present invention has at least the following beneficial effects: the test needle is located in the pinhole to protect the test needle from damage, so as to avoid the circuit board surface rubbing the test needle when the circuit board is placed; the positioning device includes a positioning block and a pushing block, the positioning block and the pushing block are located on the upper surface of the protective member, the positioning block and the pushing block are located on the upper surface of the protective member, the pushing block can push the circuit board and make it abut the positioning block, the positioning device is provided with two groups, and the two groups of positioning devices are respectively arranged along the length direction and the width direction of the protective member to realize the fixation of the circuit board, which is beneficial to the accurate positioning of the circuit board on the jig and the accuracy of the circuit board testing; the circuit board is pressed by the pressing platform, and the protective member is pressed and moved downward so that the test needle passes through the upper surface of the protective member, and the circuit layer of the circuit board can contact several test needles to realize the testing of the circuit board.

[0006] According to the circuit board testing device described in the utility model, the circuit board testing device is also provided with a nozzle, which can spray gas to clean the test needle, and the nozzle is connected to a driving device to move the nozzle above the test needle.

[0007] According to the circuit board testing device described in the utility model, the positioning device is further provided with a positioning groove, the positioning block and the positioning groove are located on two opposite sides of the circuit board, and the propulsion block can move along the positioning groove.

[0008] According to the circuit board testing device described in the utility model, the press table is provided with two first slots and two second slots, the first slots are used to accommodate the positioning blocks, and the second slots are used to accommodate the pushing blocks.

[0009] According to the circuit board testing device described in the utility model, the fixture is provided with a machine platform, and an elastic member is provided between the protective member and the machine platform. The elastic member is made of a flexible material and can be deformed when subjected to pressure in a vertical direction.

[0010] According to the circuit board testing equipment described in the utility model, the jig is provided with a plurality of positioning pins, the protective member is provided with a plurality of first positioning holes, the elastic member is provided with a plurality of second positioning holes, the positioning pins pass through the first positioning holes and the second positioning holes, and the plurality of positioning pins are arranged at intervals along the circumference of the jig.

[0011] According to the circuit board testing device described in the utility model, the press platform is provided with a third slot, and the third slot is used to accommodate the positioning pin.

[0012] According to the circuit board testing equipment described in the utility model, a loading device is provided on one side of the jig, and the loading device is provided with a loading rack. A plurality of first suction cups and a plurality of second suction cups are provided at both ends of the loading rack respectively, and the first suction cups and the second suction cups are used to take and place the circuit board.

[0013] According to the circuit board testing equipment described in the utility model, the feeding device is provided with a motor, and the motor is connected to the feeding rack so that the first suction cup and the second suction cup can rotate around the motor.

[0014] According to the circuit board testing device described in the utility model, the feeding device is provided with sensors, and the two sensors are respectively used to detect the in-place status of the circuit board.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is an axonometric view of a circuit board testing device according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A partial enlarged view of part A in the middle;

[0019] Figure 3 for Figure 1 A partial enlarged view of part B in the middle;

[0020] Figure 4 for Figure 1 A partial enlarged view of the middle C area;

[0021] Figure 5 This is a front view of a circuit board testing device according to an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 Cross-sectional view of the middle DD area;

[0023] Figure 7 for Figure 5 Cross-sectional view of the middle EE part;

[0024] Figure 8 Bit Figure 6 A partial enlarged view of the cross-sectional view of the FF part.

[0025] Reference numerals:

[0026] Fixture 100; circuit board 101; machine platform 102; protective member 110; pinhole 111; first positioning hole 112; test pin 120; elastic member 130; second positioning hole 131; positioning pin 140;

[0027] Pressing platform 200; first slot 210; second slot 220; third slot 230;

[0028] Positioning device 300; positioning block 310; positioning groove 320; pushing block 330;

[0029] Nozzle 400;

[0030] Loading device 500; loading rack 510; first suction cup 520; second suction cup 530; motor 540; sensor 550.

[0031] Sliding device 600; sliding frame 610; sliding plate 620; cylinder 630;

[0032] Loading position 700; first position 710; second position 720; third position 730. DETAILED DESCRIPTION

[0033] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figure 1 and Figure 2 The embodiment of the present invention provides a circuit board testing device, including a fixture 100 and a positioning device 300. The fixture 100 is provided with a protective member 110 and a needle bed. The protective member 110 is provided with a plurality of pinholes 111. The needle bed is provided with a plurality of test needles 120. The test needles 120 are located in the pinholes 111. The protective member 110 can move downward under pressure so that the test needles 120 can pass through the upper surface of the protective member 110. The protective member 110 can protect the test needles 120 to avoid damage to the test needles 120 before the test begins and to avoid friction between the circuit board 101 and the test needles 120 when the circuit board 101 is placed. The circuit board 101 is placed on the upper surface of the protective member 110. The circuit board 101 layer of the circuit board 101 contacts the upper surface of the protective member 110. A pressing platform 200 is provided above the fixture 100. The pressing platform 200 can move downward to press the circuit board. The circuit board 101 is pressed and moved downwardly to make the circuit layer of the circuit board 101 contact several test pins 120, so as to realize the test of the circuit board 101. The positioning device 300 includes a positioning block 310 and a pushing block 330. The positioning block 310 and the pushing block 330 are located on the upper surface of the protective member 110. The positioning block 310 is fixed to the upper surface of the protective member 110. The positioning block 310 and the pushing block 330 are located on the opposite sides of the circuit board 101. The pushing block 330 can push the circuit board 101 and make it abut against the positioning block 310. The positioning device 300 is provided with two groups. The positioning devices 300 on both sides are arranged along the length direction and the width direction of the protective member 110 respectively, so as to realize the positioning of the circuit board 101 on the surface of the protective member 110 and the accurate positioning of the circuit board 101 on the fixture 100, which is conducive to improving the accuracy of the test of the circuit board 101.

[0038] When a circuit board testing device according to an embodiment of the present invention is used, the circuit board 101 is placed on the upper surface of the protective member 110, and the circuit layer of the circuit board 101 contacts the upper surface of the protective member 110, so that the adjacent two sides of the circuit board 101 contact the two positioning blocks 310, reducing the friction between the circuit board 101 and the protective member 110, and the two pushing blocks 330 push the other two sides of the circuit board 101 respectively so that the circuit board 101 abuts against the positioning blocks 310, thereby achieving accurate positioning of the circuit board 101, and the pressing platform 200 moves downward to press the circuit board 101, and the circuit board 101 presses down the protective member 110, and the protective member 110 moves downward so that the test needle 120 contacts the circuit layer of the circuit board 101, completing the test of the circuit board 101, and the positioning device 300 is used to achieve the positioning of the circuit board 101 on the fixture 100, which is conducive to ensuring the accuracy of the test of the circuit board 101.

[0039] Reference Figure 1 、 Figure 3 and Figure 6 Optionally, the test equipment for the circuit board 101 is provided with a nozzle 400, which can spray gas to clean the test needle 120, prevent the test needle 120 from being covered with dust, oxides and other debris, protect the test needle 120, ensure the contact between the test needle 120 and the circuit layer of the circuit board 101, and ensure the test of the circuit board 101. The nozzle 400 is connected to a driving device, and the initial position of the nozzle 400 is located on one side of the fixture 100. The driving device can drive the nozzle 400 to move above the test needle 120, and the nozzle 400 sprays gas to clean the test needle 120. After cleaning, the driving device drives the nozzle 400 to move to the initial position to prevent the nozzle 400 from affecting the test of the circuit board 101.

[0040] Reference Figure 2 and Figure 6 Optionally, the positioning device 300 is further provided with a positioning groove 320, the positioning block 310 and the positioning groove 320 are located on opposite sides of the circuit board 101, and the pushing block 330 can move along the positioning groove 320 to prevent the pushing block 330 from separating from the circuit board 101 during the downward pressing of the circuit board 101, thereby ensuring that the circuit board 101 is fixed during the testing of the circuit board 101 and ensuring the contact between the circuit board 101 and the test needle 120 during the testing process.

[0041] Reference Figure 7 Optionally, the press platform 200 is provided with two first grooves 210 and two second grooves 220, the first groove 210 is used to accommodate the positioning block 310, and the second groove 220 is used to accommodate the pushing block 330, so as to prevent the press platform 200 from pressing the positioning device 300 during the test, so as to protect the press platform 200 and the positioning device 300, and avoid affecting the positioning of the circuit board 101 by the positioning device 300 during the test.

[0042] Reference Figure 5 and Figure 8 Optionally, the fixture 100 includes a machine platform 102, and an elastic member 130 is disposed between the protective member 110 and the machine platform 102. The elastic member 130 is made of a flexible material and is capable of deforming when subjected to vertical pressure. When the protective member 110 is pressed against the elastic member 130, the elastic member 130 deforms, causing the protective member 110 to descend, allowing the test needle 120 to pass through the upper surface of the protective member 110.

[0043] It is understandable that the elastic member 130 is made of a flexible material, which may be rubber, polyurethane elastic material, etc., and may be selected based on actual production costs and needs, and this application does not impose any limitation on this.

[0044] Reference Figure 8Optionally, the fixture 100 is provided with a plurality of positioning pins 140, the protective member 110 is provided with a plurality of first positioning holes 112, and the elastic member 130 is provided with a plurality of second positioning holes 131. The positioning pins 140 are inserted into the first positioning holes 112 and the second positioning holes 131 to prevent the protective member 110 and the elastic member 130 from shifting during the testing of the circuit board 101, ensuring contact between the circuit board 101 and the test pin 120, and preventing friction between the test pin 120 and the inner wall of the pinhole 111, thereby protecting the test pin 120. The plurality of positioning pins 140 are arranged at intervals along the circumference of the fixture 100 to ensure the positioning of the protective member 110 and the elastic member 130, thereby improving the stability of the circuit board 101 during the testing process.

[0045] Reference Figure 7 Optionally, the press platform 200 is provided with a third groove 230, which is used to accommodate the positioning pin 140 to prevent the press platform 200 from pressing the positioning pin 140 during the test, which is beneficial to protecting the press platform 200 and the positioning pin 140.

[0046] Reference Figure 1 and Figure 4 Optionally, a loading device 500 is provided on one side of the jig 100, and the loading device 500 is provided with a loading rack 510. A plurality of first suction cups 520 and a plurality of second suction cups 530 are respectively provided at both ends of the loading rack 510. The plurality of first suction cups 520 and the second suction cups 530 are used to pick up and place the circuit board 101, thereby realizing automatic picking up and placing of the circuit board 101.

[0047] Reference Figure 4 Optionally, the loading device 500 is provided with a motor 540, which is connected to the loading rack 510 so that the first suction cup 520 and the second suction cup 530 can rotate around the motor 540, and the motor 540 can drive the first suction cup 520 and the second suction cup 530 to adjust their positions in the horizontal plane.

[0048] Reference Figure 4 Optionally, the loading device 500 is provided with a sensor 550, and the two sensors 550 are respectively used to detect the position of the circuit board 101. Several first suction cups 520 are arranged circumferentially around one of the sensors 550, and several second suction cups 530 are arranged circumferentially around the other sensor 550 to ensure that the circuit board 101 below is sucked into place by the first suction cup 520 and the second suction cup 530, thereby ensuring the normal operation of the circuit board 101 detection.

[0049] Reference Figure 4 and Figure 6Optionally, a sliding device 600 is provided on one side of the jig 100, and the sliding device 600 includes a sliding frame 610 and a sliding plate 620. The sliding plate 620 is slidably connected to the sliding frame 610, and the sliding plate 620 is connected to a driving device so that the sliding plate 620 can slide along the length direction of the jig 100. A cylinder 630 is provided at one end of the sliding plate 620, and the loading device 500 is connected to the cylinder 630. The cylinder 630 can drive the loading device 500 to rise and fall so that the first suction cup 520 and the second suction cup 530 can contact the circuit board 101.

[0050] Reference Figure 5 and Figure 6 Optionally, a loading platform is provided on one side of the sliding device 600. The loading platform includes a first position 710, a second position 720, and a third position 730. The first position 710 is used to place the circuit board 101 to be tested, the second position 720 is used to place a qualified circuit board, and the third position 730 is used to place an unqualified circuit board. The loading rack 510 is provided with an initial position. The initial position is where the first suction cup 520, the second suction cup 530, and the circuit board 101 to be tested are arranged at intervals along the length of the sliding plate 620. When the circuit board 101 is in the test position, the adjacent two sides of the circuit board 101 contact the two positioning blocks 310.

[0051] Reference Figure 5 and Figure 6 When the circuit board 101 is tested, the sliding plate 620 drives the loading device 500 to move to the side of the first position 710, the motor 540 controls the first suction cup 520 to rotate above the first position 710, the cylinder 630 controls the loading device 500 to descend until the first suction cup 520 contacts the circuit board 101, the first suction cup 520 absorbs the circuit board 101 to be tested, the motor 540 controls the loading rack 510 to rotate to the initial position, the sliding plate 620 slides along its length direction to move the second suction cup 530 to the top of the circuit board 101 that has been tested, the cylinder 630 drives the loading device 500 to descend, the second suction cup 530 absorbs the circuit board 101 that has been tested, and the motor 540 drives the loading rack 510 to rotate The first suction cup 520 is moved to rotate above the position to be tested of the circuit board 101, and the cylinder 630 drives the first suction cup 520 to descend. The first suction cup 520 places the circuit board 101 to be tested on the position to be tested of the circuit board 101, and the sliding plate 620 drives the loading device 500 away from the fixture 100. According to the information of whether the circuit board 101 is qualified fed back by the fixture 100, the sliding device 600, the cylinder 630, and the loading device 500 are controlled to place the circuit board 101 taken by the second suction cup 530 on the second position 720 or the third position 730, thereby completing the automatic loading and unloading of the circuit board 101 during the inspection process of the circuit board 101, realizing automatic inspection of the circuit board 101, improving production efficiency, and saving manual labor.

[0052] It is understandable that the driving device can be a mechanical device such as a motor or a cylinder, which can be selected according to actual production applications and is not limited in this application.

[0053] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circuit board testing device, characterized in that: Used for circuit board testing, including: A fixture is provided with a protective member and a needle bed, wherein the protective member is provided with a plurality of pinholes, and the needle bed is provided with a plurality of test needles, wherein the test needles are located in the pinholes, and the protective member is capable of moving downward under pressure so that the test needles can pass through the upper surface of the protective member, and the circuit layer of the circuit board contacts the upper surface of the protective member, and a pressing platform is provided above the fixture, and the pressing platform presses the circuit board so that the circuit layer of the circuit board contacts the plurality of test needles; The positioning device includes a positioning block and a pushing block, the positioning block and the pushing block are located on the upper surface of the protective member, the positioning block and the pushing block are located on opposite sides of the circuit board, the pushing block can push the circuit board and make it abut against the positioning block, and the positioning device is provided with two groups, and the two groups of positioning devices are arranged along the length direction and width direction of the protective member respectively.

2. The circuit board testing device according to claim 1, wherein: The circuit board testing device is further provided with a nozzle capable of ejecting gas to clean the test needle. The nozzle is connected to a driving device to move the nozzle above the test needle.

3. The circuit board testing device according to claim 1, wherein: The positioning device is further provided with a positioning groove, the positioning block and the positioning groove are located on two opposite sides of the circuit board, and the propulsion block can move along the positioning groove.

4. The circuit board testing device according to claim 1, wherein: The press platform is provided with two first grooves and two second grooves, wherein the first grooves are used to accommodate the positioning blocks, and the second grooves are used to accommodate the propulsion blocks.

5. The circuit board testing device according to claim 1, wherein: The jig is provided with a machine platform, and an elastic member is provided between the protective member and the machine platform. The elastic member is made of a flexible material and can be deformed when compressed in a vertical direction.

6. The circuit board testing device according to claim 5, characterized in that: The jig is provided with a plurality of positioning pins, the protective member is provided with a plurality of first positioning holes, the elastic member is provided with a plurality of second positioning holes, the positioning pins pass through the first positioning holes and the second positioning holes, and the plurality of positioning pins are arranged at intervals along the circumference of the jig.

7. The circuit board testing device according to claim 6, characterized in that: The pressing platform is provided with a third groove, and the third groove is used to accommodate the positioning pin.

8. The circuit board testing device according to claim 1, wherein: A loading device is provided on one side of the fixture, and the loading device is provided with a loading rack. A plurality of first suction cups and a plurality of second suction cups are provided at both ends of the loading rack, respectively. The first suction cups and the second suction cups are used to take and place the circuit board.

9. The circuit board testing device according to claim 8, characterized in that: The loading device is provided with a motor, and the motor is connected to the loading frame so that the first suction cup and the second suction cup can rotate around the motor.

10. The circuit board testing device according to claim 9, characterized in that: The loading device is provided with sensors, and the two sensors are respectively used to detect the in-place status of the circuit board.

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