Nixie tube sleeve shell assembling equipment

Abstract

The utility model provides a nixie tube casing assembling device, which is used for hot melting assembling between a PCB (printed circuit board) and a nixie tube casing, and comprises a base, and a platform of the base is provided with the following devices: a horizontal transfer device, which comprises a first conveyor belt and a second conveyor belt which are parallel to each other and have a space gap, a detection position, an assembly position and a hot melting position are sequentially arranged in a space gap between the first conveying belt and the second conveying belt; the first feeding device is arranged at the front end of the horizontal transferring device and used for conveying the PCBs to the input end of the horizontal transferring device; the second feeding device is arranged on one side of the horizontal transferring device and used for conveying the nixie tube shell to the assembling position of the horizontal transferring device; the hot melting welding device is used for heating and pressurizing the nixie tube workpiece on the hot melting position, so that the nixie tube shell and the PCB are welded together in a hot melting mode. The full-automatic assembling and hot melting machine has the advantages that full automation of feeding, assembling and hot melting of the nixie tube shells and the PCBs is achieved, and the production efficiency of nixie tubes is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of digital tube production equipment, in particular to digital tube housing assembly equipment. Background Art

[0002] In the production of digital tube assembly, when the PCB board is assembled with the digital tube shell, the positioning holes on the PCB board are aligned with the positioning posts of the digital tube shell, and then the positioning posts of the digital tube shell are heated and welded, so that the PCB board is tightly attached to the digital tube shell and fixedly connected together. At present, digital tube assembly is mostly done manually and with the help of a hot melt device to weld the PCB board and the digital tube shell. However, this assembly method has low production efficiency and a high defect rate. Therefore, it is necessary to develop a digital tube shell assembly equipment with a high degree of automation. Utility Model Content

[0003] In order to solve the above-mentioned problems of low production efficiency of digital tube assembly, low automation degree of digital tube shell assembly and high product defect rate, the utility model provides a digital tube shell assembly device.

[0004] To this end, a digital tube housing assembly device of the utility model adopts the following technical solutions:

[0005] A digital tube shell assembly device is used for hot-melt assembly between a PCB board and a digital tube shell, comprising a machine base, on the platform of which the following devices are arranged: a horizontal transfer device, comprising a first conveyor belt and a second conveyor belt which are parallel to each other and have a space gap, wherein a detection position, an assembly position and a hot-melt position are arranged in sequence in the space gap between the first conveyor belt and the second conveyor belt; a first feeding device, arranged at the front end of the horizontal transfer device, for conveying the PCB board to the input end of the horizontal transfer device; a second feeding device, arranged at one side of the horizontal transfer device, for conveying the digital tube shell to the assembly position of the horizontal transfer device; a hot-melt welding device, arranged vertically along the horizontal moving direction of the horizontal transfer device, for heating and pressurizing the digital tube workpiece on the hot-melt position, so that the digital tube shell and the PCB board are assembled together.

[0006] Preferably, the first conveyor belt of the horizontal transfer device is an adjustable conveyor belt, and the adjustable conveyor belt is connected to a driving mechanism for adjusting the size of the space gap between the first conveyor belt and the second conveyor belt. The driving mechanism includes a screw rod and a nut arranged on a platform of the machine base. The nut is passed through the screw rod, and the nut is fixedly connected to the adjustable conveyor belt through a connecting block.

[0007] Preferably, the detection position includes a first vacuum suction cup, which is connected to a first vacuum pump. A first baffle is arranged on the front side of the first vacuum suction cup. The first baffle can be raised and lowered along the vertical direction of the horizontal transfer device. The first baffle is used to limit the movement of the PCB board on the horizontal transfer device.

[0008] Preferably, the assembly position includes a second vacuum suction cup, which is connected to a second vacuum pump. A second gear bar is provided on the front side of the second vacuum suction cup. The second gear bar can be raised and lowered perpendicular to the direction of the horizontal transfer device to limit the movement of the digital tube housing and the PCB board assembly.

[0009] Preferably, it also includes a first visual inspection device, which is arranged below the horizontal transfer device and is used to collect assembly hole image information on the PCB board conveyed by the first loading device, including a first camera and a first bracket, and the first camera is fixed on the first bracket.

[0010] Preferably, the second feeding device includes a horizontal feeding mechanism and a three-axis manipulator; wherein, the horizontal feeding mechanism includes a feeding vibration plate and a straight vibration track, one end of the straight vibration track is connected to the feeding vibration plate, and the other end of the straight vibration track is connected to a parking position; the three-axis manipulator includes an X-axis track, a Y-axis track and a Z-axis track respectively arranged along the XYZ directions, and a gripper is provided at the end of the Z-axis track, and the gripper is used to transfer the digital tube shell on the parking position to the PCB board on the assembly position for assembly.

[0011] Preferably, a second visual inspection device is installed at the end of the Z-axis track of the three-axis manipulator of the second loading device, for collecting image information of the molten column of the digital tube shell on the horizontal transfer device.

[0012] Preferably, the hot melt welding device includes a limit plate and a hot melt mold; wherein, the limit plate is located above the space gap between the first conveyor belt and the second conveyor belt of the horizontal transfer device, and is used to block the upper surface of the digital tube shell and the PCB board assembly; the hot melt mold is located below the space gap between the first conveyor belt and the second conveyor belt of the horizontal transfer device, and is arranged corresponding to the limit plate, and the upper end of the hot melt mold has a plurality of copper columns corresponding to the melting columns of the digital tube shell.

[0013] Preferably, a lifting and heating mechanism is provided at the lower end of the hot melt mold, including a lifting motor and a heating plate, wherein the heating plate is used to heat the hot melt mold, and the lifting motor is used to drive the copper column of the hot melt mold to pressurize the melt column of the digital tube shell.

[0014] Preferably, it also includes a controller, which is electrically connected to the horizontal transfer device, the first feeding device, the second feeding device and the hot melt welding device.

[0015] The implementation of the digital tube housing assembly device of the utility model has the following beneficial technical effects:

[0016] The digital tube housing assembly equipment of the utility model adopts a fully automated design, so that the digital tube housing and the PCB board can be completely loaded, assembled and hot-melt welded, with high precision, greatly improving the production efficiency of the digital tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a partial structural schematic diagram of the digital tube housing assembly device according to the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the digital tube housing assembly device according to the embodiment of the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of the digital tube housing assembly device according to the embodiment of the utility model;

[0021] Figure 4 Another partial structural schematic diagram of the digital tube housing assembly device according to the embodiment of the utility model;

[0022] Figure 5 It is another partial structural schematic diagram of the digital tube housing assembly device according to the embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a three-axis manipulator of a digital tube housing assembly device according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] Base-1

[0026] Horizontal transfer device-2

[0027] First conveyor belt-21 Second conveyor belt-22 Driving mechanism-23

[0028] Screw-231 Nut-232 Motor-233

[0029] Driven wheel-234 Driving wheel-235

[0030] Detection bit -3

[0031] First vacuum cup-31 First stopper-32

[0032] Assembly position -4

[0033] Second vacuum cup-41 Second stop lever-42

[0034] First feeding device-6

[0035] Conveyor belt-61 Fixed baffle-62 Adjustable baffle-63

[0036] Second feeding device-7

[0037] Horizontal feeding mechanism-71 Feeding vibration plate-711 Linear vibration rail-712

[0038] Parking space-713 Three-axis manipulator-72 X-axis track-721

[0039] Y-axis track-722 Z-axis track-723 Gripper-724

[0040] Hot melt welding device-8

[0041] Limit plate-81 Hot melt mold-82 Copper column-821

[0042] Lifting and heating mechanism-83 Lifting motor-831 Heating plate-832

[0043] First visual inspection device-9

[0044] First camera-91 First bracket-92

[0045] Second visual inspection device-10

[0046] Controller-11 DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] In the assembly and production of digital tubes, hot-melt assembly is performed between the PCB board and the digital tube shell. The digital tube shell is made of plastic and has a fuse on the back. The PCB board and the fuse are provided with assembly holes corresponding to the fuse. During assembly, the assembly holes of the PCB board must be accurately aligned with the fuse on the digital tube shell. Then, the fuse is heated and pressurized to be hot-melted, so that the PCB board is tightly attached to the digital tube shell and fixedly welded together to prevent light leakage during the later testing of the digital tube.

[0049] Example

[0050] See also Figures 1 to 5 The digital tube shell assembly equipment of the utility model includes a base 1, and the following devices are arranged on the platform of the base 1: a horizontal transfer device 2, a first feeding device 6, a second feeding device 7, a first visual inspection device 9, a second visual inspection device 10, a hot melt welding device 8 and a controller 11, and the controller 11 is a touch screen for human-computer interaction.

[0051] The horizontal transfer device 2 is arranged along the X-axis direction of the platform of the machine base 1, and includes: a first conveyor belt 21 and a second conveyor belt 22. The first conveyor belt 21 and the second conveyor belt 22 are parallel to each other, and there is a space gap between them. In the space gap between the first conveyor belt 21 and the second conveyor belt 22, from the input end to the output end of the horizontal transfer device 2, a detection position 3, an assembly position 4 and a hot melt position 5 are sequentially arranged.

[0052] The first conveyor belt 21 of the horizontal transfer device 2 is an adjustable conveyor belt, and the adjustable conveyor belt is connected to a driving mechanism 23. In the plane where the horizontal transfer device 2 is located, the driving mechanism 23 is arranged along the Y-axis direction of the platform of the machine base 1. The first conveyor belt 21 is driven by the driving mechanism 23 to adjust the size of the space gap between the first conveyor belt 21 and the second conveyor belt 22. The driving mechanism 23 includes a screw rod 231 arranged on the platform of the machine base 1, and a nut 232 arranged on the screw rod 231. One end of the screw rod 231 is connected to a driven wheel 234, and a motor 233 is arranged on one side of the driven wheel 234. A driving wheel 235 is fixed on the main shaft of the motor 233, and the driving wheel 235 and the driven wheel 234 are connected by a synchronous belt. The motor 233 rotates when powered on, and the driving wheel 235 on the main shaft of the motor 233 drives the driven wheel 234 to rotate synchronously, and the driven wheel 234 drives the nut 232 on the screw rod 231 to move forward and backward along the screw rod 231, and the nut 232 is fixedly connected to the first conveyor belt 21. Therefore, under the action of the driving mechanism 23, the first conveyor belt 21 can move relative to the second conveyor belt 22, thereby adjusting the distance of the space gap between the first conveyor belt 21 and the second conveyor belt 22.

[0053] The first loading device 6 is arranged at the input end of the horizontal transfer device 2 along the X-axis direction of the platform of the machine base 1. Its function is to transport the PCB board placed on the conveyor belt 61 of the first loading device 6 to the input end of the horizontal transfer device 2. A fixed baffle 62 is arranged on one side of the conveyor belt 61 of the first loading device 6 along the X-axis direction. An adjusting baffle 63 is arranged on one side of the conveyor belt 61 of the first loading device 6 along the X-axis direction. The distance between the adjusting baffle 63 and the fixed baffle 62 is adjustable, which is used to limit the PCB board when it is transferred from the conveyor belt 61 to the input end of the horizontal transfer device 2.

[0054] The second loading device 7 is arranged on one side of the horizontal transfer device 2, and the second loading device 7 is used to transport the digital tube shell to the assembly position 4 in the space gap of the horizontal transfer device 2. The second loading device 7 includes a horizontal feeding mechanism 71 and a three-axis manipulator 72. Among them, the horizontal feeding mechanism 71 is arranged along the Y-axis direction of the platform of the machine base 1, and includes: a feeding vibration plate 711 and a straight vibration track 712, one end of the straight vibration track 712 is connected to the outlet end of the feeding vibration plate 711, and the other end of the straight vibration track 712 is connected to a parking position 713, and the parking position 713 is used to receive the digital tube shell transported by the feeding vibration plate 711 and the straight vibration track 712, so that the three-axis manipulator 72 can grab the digital tube shell to the assembly position 4 in the space gap of the horizontal transfer device 2.

[0055] like Figure 1 , Figure 3 and Figure 6 As shown, the three-axis manipulator 72 includes an X-axis track 721, a Y-axis track 722 and a Z-axis track 723 respectively arranged along the XYZ directions. A gripper 724 is provided at the end of the Z-axis track 723. The gripper 724 is used to transfer the digital tube housing on the parking position 713 to the PCB board on the assembly position 4 for assembly. Among them, the Y-axis track 722 moves along the Y-axis direction of the platform of the base 1, the X-axis track 721 moves along the X-axis direction of the platform of the base 1, and the Z-axis track 723 moves up and down along the Z-axis direction of the platform of the base 1. The gripper 724 at the end of the Z-axis track 723 is a vacuum adsorption mechanism, and a mechanical gripper can also be used. The three-axis manipulator 72 is used for transferring the digital tube housing, with fast speed, high control accuracy, and improved assembly efficiency.

[0056] like Figure 1 , Figure 3 and Figure 5As shown, the hot melt welding device 8 is vertically arranged along the horizontal moving direction of the horizontal transfer device 2, and is used to heat and pressurize the digital tube workpiece on the hot melt position 5, so that the digital tube shell and the PCB board are assembled together. The hot melt welding device 8 includes a limit plate 81, a hot melt mold 82 and a lifting and heating mechanism 83, wherein the limit plate 81 is located above the space gap between the first conveyor belt 21 and the second conveyor belt 22 of the horizontal transfer device 2, that is, it is arranged directly above the hot melt position 5, and is used to abut the upper surface of the digital tube shell and the PCB board assembly. The hot melt mold 82 is located below the space gap between the first conveyor belt 21 and the second conveyor belt 22 of the horizontal transfer device 2, that is, it is arranged directly below the hot melt position 5, and the hot melt mold 82 corresponds to the limit plate 81. A plurality of copper columns 821 corresponding to the melting columns of the digital tube shell are arranged at the upper end of the hot melt mold 82. A lifting and heating mechanism 83 is provided at the lower end of the hot melt mold 82. The lifting and heating mechanism 83 includes a lifting motor 831 and a heating plate 832. The heating plate 832 is used to heat the hot melt mold 82. The lifting motor 831 is used to drive the hot melt mold 82 to rise, so that the copper column 821 at the upper end of the hot melt mold 82 is aligned with the melting column of the digital tube shell for hot pressing, thereby realizing hot melt welding of the melting column of the digital tube shell and the PCB board.

[0057] like Figure 3 , Figure 4 and Figure 5 As shown, the detection position 3 is arranged in the space gap between the first conveyor belt 21 and the second conveyor belt 22, close to the input end of the horizontal transfer device 2, and includes a first vacuum suction cup 31, the first vacuum suction cup 31 is connected to a first vacuum pump (not shown in the figure), and a first baffle 32 is arranged on the front side of the first vacuum suction cup 31. The first baffle 32 can be lifted up and down along the vertical direction of the horizontal transfer device 2, that is, lifted and moved along the Z-axis direction of the platform of the machine base 1, and the first baffle 32 is used to limit the movement of the PCB board on the horizontal transfer device 2. When in use, when the PCB board moves to the top of the first vacuum suction cup 31 along the first conveyor belt 21 and the second conveyor belt 22 of the horizontal transfer device 2, the first baffle 32 rises and blocks the PCB board from moving forward. At the same time, the first vacuum suction cup 31 has an adsorption force under the action of the first vacuum pump to adsorb and position the PCB board on the detection position 3.

[0058] like Figure 5As shown, the digital tube housing assembly device of the present application also includes: a first visual inspection device 9, which is arranged below the horizontal transfer device 2. Specifically, the first visual inspection device 9 is located below the detection position 3. The function is that when the first feeding device 6 conveys the PCB board to the horizontal transfer device 2 and the PCB board moves to the detection position 3, the first visual inspection device 9 collects the assembly hole position image information of the PCB located at the detection position 3, and transmits it to the controller 11 for image processing. The first visual inspection device 9 is mainly composed of a first camera 91 and a first bracket 92, and the first camera 91 is fixed on the first bracket 92.

[0059] like Figure 6 As shown, a second visual inspection device 10 is installed at the end of the Z-axis track 723 of the three-axis manipulator 72 of the second loading device 7. The second visual inspection device 10 has a second camera. When in use, the second camera is aimed at the digital tube housing on the assembly position 4 to collect image information of the molten column of the digital tube housing on the assembly position 4 of the horizontal transfer device 2, and transmit it to the controller 11 for image processing.

[0060] like Figure 3 , Figure 4 and Figure 5 As shown, the assembly position 4 is arranged in the space gap between the first conveyor belt 21 and the second conveyor belt 22, and the assembly position 4 includes a second vacuum suction cup 41, and the second vacuum suction cup 41 is connected to a second vacuum pump (not shown in the figure). A second stopper 42 is arranged on the front side of the second vacuum suction cup 41, and the second stopper 42 can be lifted up and down along the vertical direction of the horizontal transfer device 2, that is, lifted and moved along the Z-axis direction of the platform of the machine base 1, and is used to limit the movement of the digital tube housing and the PCB board assembly. When in use, when the PCB board moves to the top of the second vacuum suction cup 41 along the first conveyor belt 21 and the second conveyor belt 22 of the horizontal transfer device 2, the second stopper 42 rises and blocks the PCB board from moving forward. At the same time, the second vacuum suction cup 41 has an adsorption force under the action of the second vacuum pump to adsorb and position the PCB board on the assembly position 4.

[0061] The working principle of this embodiment includes the following steps:

[0062] S1. The first loading device transfers the assembled PCB boards (including a plurality of PCB units arranged in an array) to the input end of the horizontal transfer device;

[0063] S2. The PCB board is moved to the detection position under the synchronous driving of the first conveyor belt and the second conveyor belt of the horizontal transfer device. The first visual inspection device collects the assembly hole position image information of the PCB board on the detection position and sends it to the controller 11 for image processing to obtain the positioning image of the assembly hole position of the PCB board;

[0064] S3. The PCB board continues to move to the assembly position under the synchronous drive of the first conveyor belt and the second conveyor belt of the horizontal transfer device. The three-axis manipulator of the second loading device transports the horizontal feeding mechanism to the digital tube shell at the parking position for grabbing. At the same time, the second visual inspection device collects the image information of the fuse of the digital tube shell at the assembly position and transmits it to the controller for image processing, so that the fuse of the digital tube shell on the three-axis manipulator is accurately aligned with the assembly hole of the PCB board at the assembly position for assembly;

[0065] S4. When the PCB board and the digital tube shell assembly are moved to the hot melt position under the synchronous driving of the first conveyor belt and the second conveyor belt of the horizontal transfer device, the hot melt mold of the hot melt welding device is driven by the lifting and heating mechanism to move to the hot melt position, and the upper end of the PCB board and the digital tube shell assembly on the hot melt position is limited by the limit plate of the hot melt welding device, and the copper column at the upper end of the hot melt mold is aligned with the melting column of the digital tube shell for hot pressing. Under the hot pressing, the melting column of the code tube shell realizes the fixed connection between the PCB board and the digital tube shell;

[0066] S5. After the hot-melt welding of the PCB board and the digital tube shell assembly is completed, the first conveyor belt and the second conveyor belt of the horizontal transfer device are synchronously driven to transport them to the output end to complete the assembly of the digital tube shell.

[0067] The specific embodiments described herein are merely examples of the purpose of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the purpose of the present invention or exceed the scope defined by the attached claims.

Claims

1. A digital tube housing assembly device, used for hot melt assembly between a PCB board and a digital tube housing, including a base, characterized in that: The following devices are arranged on the platform of the base: The horizontal transfer device comprises a first conveyor belt and a second conveyor belt which are parallel to each other and have a space gap, wherein a detection position, an assembly position and a hot-melt position are sequentially arranged in the space gap between the first conveyor belt and the second conveyor belt; A first loading device, arranged at the front end of the horizontal transfer device, for conveying the PCB board to the input end of the horizontal transfer device; A second loading device, disposed on one side of the horizontal transfer device, for conveying the digital tube housing to the assembly position of the horizontal transfer device; The hot-melt welding device is vertically arranged along the horizontal moving direction of the horizontal transfer device, and is used to heat and pressurize the digital tube workpiece on the hot-melt position so that the digital tube housing and the PCB board are assembled together.

2. The digital tube housing assembly device according to claim 1, characterized in that: The first conveyor belt of the horizontal transfer device is an adjustable conveyor belt, which is connected to a driving mechanism for adjusting the size of the space gap between the first conveyor belt and the second conveyor belt. The driving mechanism includes a screw rod and a nut arranged on a platform of the machine base. The nut is passed through the screw rod and fixedly connected to the adjustable conveyor belt through a connecting block.

3. The digital tube housing assembly device according to claim 2, characterized in that: The detection position includes a first vacuum suction cup, which is connected to a first vacuum pump. A first baffle is arranged on the front side of the first vacuum suction cup. The first baffle can be raised and lowered along the vertical direction of the horizontal transfer device. The first baffle is used to limit the movement of the PCB board on the horizontal transfer device.

4. The digital tube housing assembly device according to claim 3, characterized in that: The assembly position includes a second vacuum suction cup, which is connected to a second vacuum pump. A second baffle is provided on the front side of the second vacuum suction cup. The second baffle can be raised and lowered perpendicular to the direction of the horizontal transfer device to limit the movement of the digital tube housing and the PCB board assembly.

5. The digital tube housing assembly device according to claim 4, characterized in that: It also includes a first visual inspection device, which is arranged below the horizontal transfer device and is used to collect assembly hole image information on the PCB board conveyed by the first loading device, including a first camera and a first bracket, and the first camera is fixed on the first bracket.

6. The digital tube housing assembly device according to claim 5, characterized in that: The second feeding device includes a horizontal feeding mechanism and a three-axis manipulator; Wherein, the horizontal feeding mechanism comprises a feeding vibration plate and a straight vibration track, one end of the straight vibration track is connected to the feeding vibration plate, and the other end of the straight vibration track is connected to a parking position; The three-axis manipulator includes an X-axis track, a Y-axis track and a Z-axis track respectively arranged along the XYZ directions. A gripper is provided at the end of the Z-axis track, and the gripper is used to transfer the digital tube housing on the parking position to the PCB board on the assembly position for assembly.

7. The digital tube housing assembly device according to claim 6, characterized in that: A second visual inspection device is installed at the end of the Z-axis track of the three-axis manipulator of the second loading device, which is used to collect image information of the molten column of the digital tube shell on the horizontal transfer device.

8. The digital tube housing assembly device according to claim 7, characterized in that: The hot melt welding device comprises a limit plate and a hot melt mold; Wherein, the limit plate is located above the space gap between the first conveyor belt and the second conveyor belt of the horizontal transfer device, and is used to block the upper surface of the digital tube housing and the PCB board assembly; The hot melt mold is located below the space gap between the first conveyor belt and the second conveyor belt of the horizontal transfer device and is arranged corresponding to the limit plate. The upper end of the hot melt mold has a plurality of copper columns corresponding to the melting columns of the digital tube shell.

9. The digital tube housing assembly device according to claim 8, characterized in that: The lower end of the hot melt mold is provided with a lifting and heating mechanism, including a lifting motor and a heating plate, the heating plate is used to heat the hot melt mold, and the lifting motor is used to drive the copper column of the hot melt mold to pressurize the melting column of the digital tube shell.

10. The digital tube housing assembly device according to any one of claims 1 to 9, characterized in that: The device also includes a controller, which is electrically connected to the horizontal transfer device, the first feeding device, the second feeding device and the hot melt welding device.

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