Testing device for VFD display screen

Abstract

The utility model relates to a testing device for a VFD display screen, and relates to the field of display screen testing equipment.The testing device comprises a rack, the rack is provided with a testing assembly, a mechanical arm, a first placing frame, a second placing frame and a marking assembly, and the testing assembly, the first placing frame and the second placing frame are distributed on the peripheral side of the mechanical arm; the testing assembly is used for detecting the display screen, the marking assembly is used for marking the display screen which is detected to be unqualified, and the first placing frame is used for placing the display screen to be detected; and the manipulator is used for taking a display screen to be detected, conveying the display screen to the test assembly and conveying the detected display screen to the second placement frame. The method has the following effect that the detection efficiency of the display screen can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display screen testing equipment, in particular to a testing device for VFD display screen. BACKGROUND

[0002] VFD is the abbreviation of vacuum fluorescent display, which is an electronic display technology that uses vacuum tubes and fluorescent materials to produce display effects. VFD display screens are usually used to display text and numerical information, and have the advantages of high contrast, wide angle visibility and long service life. The working principle of VFD display screen is to heat the cathode by voltage to produce electron emission, and then control the position of the electron on the anode by electric field to make it break through the fluorescent material to produce fluorescent effect. VFD display screen can display multiple lines of text, each line can display multiple characters, and support different character sizes and styles.

[0003] VFD display screens can be used in various application fields, including home appliances, vehicle-mounted devices, industrial control, audio devices, etc. They usually have high reliability and durability, adapt to a wide range of environmental temperatures, and can provide clear and visible display effects in low light conditions.

[0004] Generally, glass substrates are used as the basis for VFD display screens, and the finished VFD display screens need to be detected to ensure their normal operation and display effects meet the requirements. Generally, the finished VFD display screens are manually sampled for detection, but this detection method is low in efficiency. CONTENT OF THE INVENTION

[0005] In order to improve the detection efficiency of the display screen, the present application provides a testing device for VFD display screen.

[0006] The testing device for VFD display screen provided by the present application adopts the following technical scheme:

[0007] A testing device for VFD display screen, comprising a rack, the rack is provided with a testing assembly, a mechanical hand, a first placing rack, a second placing rack and a marking assembly, the testing assembly, the first placing rack and the second placing rack are distributed on the side of the mechanical hand, the testing assembly is used for detecting the display screen, the marking assembly is used for marking the display screen that fails to pass the detection, the first placing rack is used for placing the display screen to be detected, and the mechanical hand is used for taking the display screen to be detected and conveying it to the testing assembly and conveying the display screen after detection to the second placing rack.

[0008] By adopting the technical scheme, the display screen to be detected is placed on the first placing rack, the mechanical arm takes the display screen from the first placing rack and conveys it to the test assembly, the test assembly detects the display screen, when the display screen is unqualified, the marking assembly marks the display screen, and the mechanical arm conveys the display screen after detection to the second placing rack, so that the detection efficiency of the display screen can be improved.

[0009] Preferably, the first placing rack comprises two first vertical plates and a plurality of first support bars distributed on the first vertical plates, the two first vertical plates are spaced apart and vertically arranged, and the plurality of first support bars are uniformly and spaced apart along the height direction of the first vertical plates.

[0010] The second placing rack comprises two second vertical plates and a plurality of second support bars distributed on the second vertical plates, the two second vertical plates are spaced apart and vertically arranged, and the plurality of second support bars are uniformly and spaced apart along the height direction of the second vertical plates.

[0011] By adopting the technical scheme, the plurality of first support bars of the two first vertical plates can support a plurality of display screens, so that a plurality of display screens to be detected can be placed; and the plurality of second support bars of the two second vertical plates can support a plurality of display screens, so that a plurality of display screens after detection can be placed.

[0012] Preferably, the rack is provided with a cleaning box, one side of the cleaning box is provided with an opening, and the cleaning box is provided with a blowing piece.

[0013] By adopting the technical scheme, the display screen to be detected is placed in the cleaning box through the opening on one side of the cleaning box, the blowing piece can blow the surface of the display screen, so that the impurities adhered to the surface of the display screen can be blown away, so that the display screen can be cleaned, and then the detection can be facilitated, and the detection accuracy can be improved.

[0014] Preferably, the test assembly comprises a first lifting piece and a plurality of probes, each probe is vertically arranged and connected with the first lifting piece, and the first lifting piece is used for moving each probe in the vertical direction.

[0015] By adopting the technical scheme, the first lifting piece drives the probe to move in the vertical direction, so that the probe can be in contact with or separated from the display screen, so that the circuit of the display screen can be detected.

[0016] Preferably, the mechanical arm is connected with a suction piece for sucking the display screen.

[0017] By adopting the technical scheme, the display screen is transported by adopting the suction piece to suck the display screen, so that the damage of the display screen during transportation can be avoided as much as possible, and the suction method is simple and convenient.

[0018] Preferably, the suction member comprises a support plate, a negative pressure source and a plurality of suction cups, each of the suction cups is distributed on one side of the support plate, the other side of the support plate is connected with the manipulator, and the negative pressure source is communicated with each of the suction cups.

[0019] By adopting the above technical scheme, the suction cups can be adsorbed on the surface of the display screen by the negative pressure source, so that the display screen can be sucked up for transportation. After the negative pressure source is turned off, the suction cups are separated from the display screen, so that the display screen can be placed.

[0020] Preferably, the marking assembly comprises a glue box, a glue applying rod and a second lifting member, the glue applying rod is located in the glue box and connected with the second lifting member, and the second lifting member is used to drive the glue applying rod to move in the vertical direction to realize the extension of the glue applying rod from the glue box.

[0021] By adopting the above technical scheme, when the display screen is detected as unqualified, the second lifting member can drive the glue applying rod to extend from the glue box, the glue applying rod contacts the display screen, and the unqualified display screen can be glued to distinguish the qualified and unqualified display screens.

[0022] Preferably, the rack is connected with a plurality of support pieces, each of the support pieces is horizontally arranged, and a limiting strip is arranged on the top of each of the support pieces.

[0023] By adopting the above technical scheme, the display screen can be placed on each of the support pieces before testing, and the limiting strip can limit the display screen, so as to improve the stability of the display screen during detection and improve the detection efficiency.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. The display screen to be detected is placed on the first placing rack, the manipulator takes the display screen from the first placing rack and transports it to the testing assembly, the testing assembly detects the display screen, when the display screen is detected as unqualified, the marking assembly marks the display screen, and the manipulator transports the detected display screen to the second placing rack, so as to improve the detection efficiency of the display screen;

[0026] 2. The display screen to be detected is placed into the cleaning box through the side opening of the cleaning box, and the blowing member blows the surface of the display screen, so as to blow off the impurities adhered to the surface of the display screen, so as to clean the display screen, thereby facilitating detection and improving detection accuracy;

[0027] 3. When the display screen is detected as unqualified, the second lifting member can drive the glue applying rod to extend from the glue box, the glue applying rod contacts the display screen, and the unqualified display screen can be glued to distinguish the qualified and unqualified display screens. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic view of an overall structure of a testing device for a VFD display screen according to an embodiment of the present application.

[0029] Figure 2 is a front view of a testing device for a VFD display screen according to an embodiment of the present application.

[0030] Figure 3 is a top view of a testing device for a VFD display screen according to an embodiment of the present application.

[0031] Figure 4 is a partial cross-sectional view along line A-A in Figure 3

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 100, rack; 101, robot;

[0034] 200, testing assembly; 201, first lifting member; 202, probe;

[0035] 300, suction member; 301, support plate; 302, negative pressure source; 303, suction disc;

[0036] 400, first placement rack; 401, first vertical plate; 402, first support bar;

[0037] 500, second placement rack; 501, second vertical plate; 502, second support bar;

[0038] 600, cleaning box; 601, blowing member;

[0039] 700, support sheet; 701, limiting bar;

[0040] 800, marking assembly; 801, glue box; 802, glue applying rod; 803, second lifting member. DETAILED DESCRIPTION

[0041] The present application will be further described in detail below with reference to the accompanying drawings.

[0042] The present application discloses a testing device for a VFD display screen. Referring to Figure 1 and Figure 2 The testing device for a VFD display screen comprises a rack 100, a testing assembly 200, a first placement rack 400 and a second placement rack 500. The testing assembly 200, the first placement rack 400 and the second placement rack 500 are all connected to the top of the rack 100. The first placement rack 400 is used for placing a display screen to be detected. The testing assembly 200 is used for detecting the display screen to be detected. The second placement rack 500 is used for placing the detected display screen.

[0043] Referring to​Figure 1 With Figure 2 The middle of the rack 100 is provided with a mechanical hand 101, the mechanical hand 101 adopts a joint type mechanical hand 101 and is used for transporting a display screen. The rack 100 is connected with a cleaning box 600, the first placing rack 400, the cleaning box 600, the second placing rack 500 and the test assembly 200 are distributed on the circumferential side of the mechanical hand 101. The mechanical hand 101 is connected with a suction piece 300, the suction piece 300 comprises a support plate 301, a negative pressure source 302 and a suction disc 303, the support plate 301 is a rectangular plate and one side is connected with the mechanical hand 101, the negative pressure source 302 adopts a vacuum pump and is connected to the side of the support plate 301 connected with the mechanical hand 101. The suction disc 303 is provided in plurality, in the embodiment, the suction disc 303 is provided in four and is distributed in a rectangular lattice on the other side of the support plate 301, the four suction discs 303 are respectively distributed on the four corners of the support plate 301, and the four suction discs 303 are all communicated with the negative pressure source 302.

[0044] The first placing rack 400 comprises a first vertical plate 401 and a first support strip 402, the first vertical plate 401 is provided in two and is a rectangular plate arranged vertically, and the two first vertical plates 401 are distributed at intervals. The first support strip 402 is provided in plurality and is divided into two groups, the two groups of first support strips 402 are arranged on the side walls of the two first vertical plates 401 facing each other, each first support strip 402 in each group is uniformly distributed along the height direction of the first vertical plate 401, and the length direction of each first support strip 402 is distributed along the horizontal direction and is parallel to each other. The first support strips 402 of the two first vertical plates 401 with the same height can support the two ends of the display screen, so that a plurality of display screens to be detected can be horizontally placed in the first placing rack 400.

[0045] The top of the rack 100 is connected with the cleaning box 600, the cleaning box 600 is provided in a rectangular parallelepiped shape and is provided with an opening on the side close to the mechanical hand 101, the cleaning box 600 is provided with a blowing piece 601 in the inside, and the blowing piece 601 adopts a fan. The blowing piece 601 is connected to the top of the cleaning box 600 and is arranged towards the bottom of the cleaning box 600.

[0046] The second placing rack 500 comprises a second vertical plate 501 and a second support strip 502, the second vertical plate 501 is provided in two and is a rectangular plate arranged vertically, and the two second vertical plates 501 are distributed at intervals. The second support strip 502 is provided in plurality and is divided into two groups, the two groups of second support strips 502 are arranged on the side walls of the two second vertical plates 501 facing each other, each second support strip 502 in each group is uniformly distributed along the height direction of the second vertical plate 501, and the length direction of each second support strip 502 is distributed along the horizontal direction and is parallel to each other. The second support strips 502 of the two second vertical plates 501 with the same height can support the two ends of the display screen, so that a plurality of display screens to be detected can be horizontally placed in the second placing rack 500.

[0047] Referring to Figure 1 WithFigure 3 The rack 100 is connected with a plurality of support plates 700. In the embodiment, the support plates 700 are four and horizontally arranged, and the four support plates 700 are arranged in a rectangular lattice and located on the same plane. The top of the support plate 700 is connected with a limiting strip 701. The display screen is rectangular. After the display screen is horizontally placed on the four support plates 700, the four support plates 700 are used for supporting the display screen, and the limiting strip 701 can limit the display screen.

[0048] Referring to Figure 2 The test assembly 200 comprises a first lifting piece 201 and probes 202. The first lifting piece 201 is a first cylinder. The first cylinder is vertically arranged, and the piston rod is directed to the plane where the support plates 700 are located. The probes 202 are a plurality of and vertically arranged. Each probe 202 is connected with the piston rod of the first cylinder.

[0049] Referring to Figure 4 The support plate 700 is provided below with a marking assembly 800. The marking assembly 800 comprises a glue box 801 and a glue applying rod 802. The glue box 801 is connected with the rack 100 and is provided with an opening at the top. The glue box 801 is internally provided with glue for marking. The glue applying rod 802 is vertically arranged in the glue box 801 and is immersed in the glue. The bottom of the glue box 801 is provided with a second lifting piece 803. The second lifting piece 803 is a second cylinder. The shell of the second cylinder is connected with the bottom of the glue box 801. The piston rod of the second cylinder penetrates into the glue box 801 and is connected with the bottom end of the glue applying rod 802.

[0050] The implementation principle of the test device for the VFD display screen is as follows: the mechanical hand 101 moves the support plate 301 between the two first vertical plates 401. The suction disc 303 sucks a display screen to be detected by the negative pressure source 302. The mechanical hand 101 moves the display screen into the cleaning box 600. The blowing piece 601 blows the display screen to reduce the dust and impurities on the surface of the display screen. The mechanical hand 101 moves the display screen onto the support plates 700. After the support plates 700 support the display screen, the negative pressure source 302 is turned off. The suction disc 303 is separated from the display screen. The mechanical hand 101 is away from the display screen. The first lifting piece 201 moves the probes 202 to contact the display screen. The probes 202 detect the circuit of the display screen. If the detection result is unqualified, the second lifting piece 803 is raised to move the glue applying rod 802. The glue applying rod 802 applies glue to the display screen. The mechanical hand 101 moves the support plate 301 above the display screen. The suction disc 303 sucks the detected display screen by the negative pressure source 302. The mechanical hand 101 moves the display screen between the two second vertical plates 501. The negative pressure source 302 is turned off. The suction disc 303 is separated from the display screen. The display screen is placed on the second support strip 502.

[0051] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A testing device for VFD displays, characterized in that: The device includes a frame (100) which is equipped with a testing component (200), a robotic arm (101), a first placement rack (400), a second placement rack (500), and a marking component (800). The testing component (200), the first placement rack (400), and the second placement rack (500) are distributed around the robotic arm (101). The testing component (200) is used to test the display screen. The marking component (800) is used to mark the display screen that fails the test. The first placement rack (400) is used to place the display screen to be tested. The robotic arm (101) is used to pick up the display screen to be tested and transport it to the testing component (200) and transport the tested display screen to the second placement rack (500).

2. The testing apparatus for VFD displays according to claim 1, characterized in that: The first placement rack (400) includes two first vertical plates (401) and a plurality of first support bars (402) distributed on the first vertical plates (401). The two first vertical plates (401) are spaced apart and are both vertically arranged. The plurality of first support bars (402) are evenly spaced along the height direction of the first vertical plates (401). The second placement rack (500) includes two second vertical plates (501) and a plurality of second support bars (502) distributed on the second vertical plates (501). The two second vertical plates (501) are spaced apart and are both vertically arranged. The plurality of second support bars (502) are evenly spaced along the height direction of the second vertical plates (501).

3. The testing apparatus for VFD displays according to claim 1, characterized in that: The frame (100) is provided with a cleaning box (600), the cleaning box (600) has an opening on one side, and a blower (601) is provided inside the cleaning box (600).

4. The testing apparatus for VFD displays according to claim 1, characterized in that: The test assembly (200) includes a first lifting member (201) and a plurality of probes (202). Each probe (202) is vertically arranged and connected to the first lifting member (201). The first lifting member (201) is used to move each probe (202) in the vertical direction.

5. The testing apparatus for VFD displays according to claim 1, characterized in that: The robotic arm (101) is connected to a suction device (300) for picking up the display screen.

6. The testing apparatus for VFD displays according to claim 5, characterized in that: The suction device (300) includes a support plate (301), a negative pressure source (302) and a plurality of suction cups (303). Each suction cup (303) is distributed on one side of the support plate (301), and the other side of the support plate (301) is connected to the robot (101). The negative pressure source (302) is connected to each suction cup (303).

7. The testing apparatus for VFD displays according to claim 1, characterized in that: The marking assembly (800) includes a glue box (801), a glue applicator (802), and a second lifting member (803). The glue applicator (802) is located in the glue box (801) and connected to the second lifting member (803). The second lifting member (803) is used to drive the glue applicator (802) to move vertically so that the glue applicator (802) extends out of the glue box (801).

8. The testing apparatus for VFD displays according to claim 1, characterized in that: The frame (100) is connected to a plurality of support plates (700), each of the support plates (700) is horizontally arranged, and each support plate (700) is provided with a limit strip (701) on its top.

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