SU906044A1 - Device for mounting radio components on printed circuit board - Google Patents

Description

(S) DEVICE FOR INSTALLING RADIO ELEMENTS ON A PCB

I

The invention relates to electronics and can be used in the manufacture of blocks of electrical radio equipment.

Closest to the invention is a device for installing radio elements on a printed circuit board comprising a base for a printed circuit board, a software control unit, a conveyor for radio elements, a display and a backlight unit 11.

However, the known device does not provide high quality installation of radio components.

The purpose of the invention is to improve the quality of the installation of radio elements.

The objective is achieved in that the device for installing radio elements on printed circuit boards, comprising a base for a printed circuit board, a program control unit, a conveyor for radio elements, a display and a backlight unit, is provided with a mask with photosensitive elements placed between the printed circuit board and the backlight unit, and a conveyor for radio elements equipped with an alarm unit, with the outputs of the alarm unit and photosensitive elements connected to the display.

Figure 1 shows the device, the general scheme; figure 2 is a mask with photosensitive elements; on fig.Z the same, a section.

The device contains a frame control program 1, a radio element conveyor 2 db, a display unit 3 (display) a backlight unit C with an electron-beam device 3f mask 6 and a base 7 for holding the PCB, photosensitive elements B and a window 9 for selecting the radio element.

Claims (1)

The software control electronic unit 1 may include a photo memory device with punched tape, a memory device, a co mutation unit, a synchronization unit, a control unit 39 of a conveyor belt. The movement of the conveyor 2 containing cells with radio elements is monitored using displacement sensors, which transmit signals to the display unit. The display unit 3 (display) is an on-screen remote with an indicator in the form of a television receiver, on the screen of which you can display both literal and graphical operational and reference information. On the display screen, lines are generated that connect the marker points the same as the control points on the backlight screen. The reference points on the screen of the backlight unit are generated on the periphery of the mask against the photosensitive elements, which determine the fixed position of the printed circuit board relative to the backlight block. The backlight unit is an electron-beam device in the form of a display, on the screen of which an image of reference points located along the perimeter of the printed circuit board is formed, also contains the invention of points (or line segments) indicating the location of the next radio element. A mask (grid) 6 is placed between the screen of the electron-beam device with a pitch of holes equal to the pitch of the holes in the printed circuit board. On the mask 6, in the places corresponding to the reference points are located the photosensitive elements 8, for example photodiodes, from which the signals are transmitted to the display unit. On the display screen 3, lines are formed that connect the reference points only when the reference points of the backlight illuminate the photosensitive elements 8. The device operates as follows. The operator, through the sub-unit of the switching unit of the program control electronic unit 1, includes a reading device, the signals of which through the synchronization unit enter the storage unit. Depending on the set program, the program control electronic unit distributes the obtained information to the conveyor 2, the display unit (display) 3 and the backlight unit C with an electron-beam device 5- The conveyor moves cells and stops one of them against window 9 in the table top with radio element, which must be installed on the printed circuit board, mounted on the base 7 through the fixing base holes in the board. The moment of cell exit to the conveyor window, the signaling unit of the conveyor operation sends a command to the display unit and the backlight unit. The assembly drawing, the location and the installation position of the radio elements on the printed circuit board, the type of radio element, the description of the radio assembly and other technological information may appear on the display unit screen. On the backlight screen, light points (or lines) appear, the light from which passes through the holes of the grid and the printed circuit board. At the same time, the reference points on the screen light, the light from which passes through the grating holes to the photosensitive elements 8. If all the reference points illuminate the photosensitive elements, the lines connecting those reference points that illuminate the photosensitive elements on the mask are displayed on the display screen. After the marker points on the screen of the display unit are connected by lines, the operator (radio installer) can proceed to the installation of the printed circuit board. Through the window in the lid of the table, the operator takes the radio element from the conveyor cell and installs it into the holes of the printed circuit board, which shine through the screen of the electron-beam device, i.e. backlight unit. At the same time, the operator according to the image on the display screen refines the correctness of the selected radio element and technological recommendations. After the radio element is installed, the operator issues a command to shift the program, i.e. array change. The conveyor is switched on and the cell is replaced with radio elements against the window in the operator’s table. Further, the operation is repeated. An apparatus for installing radio elements on a printed circuit board comprising a base for a printed circuit board, a program control unit, a conveyor for radio elements, a display and a backlight unit, characterized in that, in order to improve the quality of the installation, it is provided with a mask with