JPH02188308A - Device for conveying print board unit - Google Patents

Abstract

PURPOSE:To prevent vibration in the conveying device of a print board with projecting members by providing a pair of belt conveyors on the inside of a pair of parallel belt conveyors at an equal speed and in parallel thereto while providing a defined level difference between their placing faces, and supportingly conveying the projecting members by the outside conveyors while supportingly conveying the print board by the inside conveyors. CONSTITUTION:A pair of horizontal belt conveyors B5 are provided in parallel on the inside of a pair of horizontal belt conveyors A4 so as to travel at an equal speed while providing a defined level difference between both conveyors. Optical sensors 81, 82 are provided on the start point portion and the end point portion of the conveyors 4, 5 respectively while providing a vertically movable stopper 83 on the end point portion. A print board unit 1 is conveyed with the print board 2 thereof being supported on the belt conveyor B5 while supporting the projecting members 3 thereof on the belt conveyor A4. By this structure, even a print board having projecting portions can be conveyed without causing vibration.

Description

[Detailed Description of the Invention] [Summary] Regarding the conveyance device for printed board units using a belt conveyor, even when a structure protruding from the side edge of the printed board is attached,
With the aim of providing a conveying device that conveys images without vibration, it is equipped with a pair of parallel belt conveyors A and another pair of belt conveyors B, which are in contact with the inside of a pair of belt conveyors A, have a predetermined head height on the mounting surface, and have the same speed. The projecting parts of the attached members protruding from both side edges of the board are placed on a belt conveyor A, and the printed board part is placed on a belt conveyor B and conveyed.

[Industrial application field]

The present invention relates to a conveying device for printed board units using a belt conveyor.

In the manufacturing process of a printed board unit, many conveyances are performed. For example, the assembly is completed by transporting the printed board to one of several types of automatic component mounting machines, then manually attaching and inspecting items that cannot be machine mounted, and then testing the characteristics using an automatic adjustment machine or automatic testing machine. After that, the printed board unit is completed through rework and inspection.

A roller conveyor, flat belt conveyor, or the like is used for this conveyance, and if the conveyance destination is a robot or automatic machine, it must be conveyed and stopped correctly at a predetermined position.

For this purpose, of course the direction of conveyance of the printed board unit must be adjusted.
The positional deviation in the direction perpendicular to this must also be suppressed within a predetermined value.

[Conventional technology]

Conventional conveying equipment that transports and stops printed board units with high precision is a pair of flat belt conveyors arranged parallel to each other at intervals that match the outer shape and dimensions of both sides of the printed board unit. Place both edges of the non-mounted part of the component and transport it.

Further, a stopper is provided at a predetermined position in the front, and the front edge of the printed board unit abuts against the stopper, which is detected by an optical sensor to be stopped and aligned.

If a front plate or front-mounted unit insertion/extraction structure is attached, the protruding dimensions will vary, and the printed board part may slip off the belt conveyor, or only one side can be placed on it, but it becomes unstable and there is a risk of falling. , it tends to swing in the direction perpendicular to the conveying direction, making it difficult to convey with high precision.

■ Therefore, these protruding parts were installed at the end after testing and inspection.

For this reason, assembly was carried out twice, before and after, which was inefficient and also affected high frequency characteristic tests.

There were problems such as.

In view of this problem, the present invention aims to provide a conveyance device that conveys a printed board without runout even when a protruding member is attached to the side edge of the printed board.

[Problem to be solved by the invention]

However, ■ Members protruding from the planar shape of the printed board, for example, [Means for solving the problem] The above problem is solved when the printed board is placed in contact with the inside of a pair of parallel belt conveyors A4, as shown in Figure 1. A head of a predetermined size is provided on the mounting surface, and another pair of belt conveyors B5 of the same speed are provided, and the protruding portions of the member 3 attached protruding from both side edges 6 of the printed board 2 are placed on the belt conveyor A4, and the printing is carried out. 2 parts of the board are transferred to belt conveyor B5
This problem is solved by the conveyance device for a printed board unit of the present invention, which conveys the printed board unit by placing it on a board.

[For production]

That is, since the protruding portion is placed on belt conveyor A and the printed board portion is dropped onto belt conveyor B, it can be stably conveyed and the purpose is achieved.

A belt conveyor B5 is provided in contact with the inside of the belt conveyor A4 with a step. Since the portion is placed on the belt conveyor B5 which is lowered by one step, it is possible to suppress the lateral vibration that occurs during the conveyance of the printed board unit l due to the restriction caused by the difference in step.

Furthermore, the belt conveyors A4 and B5 are set at the same speed to eliminate lateral vibration during conveyance caused by the difference in speed.

In this way, it is possible to provide a conveying device that conveys the printed board without runout even when a protruding member is attached to the side edge of the printed board.

〔Example〕

The gist of the present invention will be specifically explained below with reference to embodiments shown in the drawings. The same reference numerals are the same throughout all the figures.This embodiment is a device that accurately conveys assembled printed board units 1 one by one to a predetermined position in an automatic inspection and testing device. For installation that protrudes from the part 3,
The printed board unit 1, which had been handled without being installed, has been replaced with the fully assembled printed board unit 1 using the device of the present invention.
It is designed to be able to handle

As shown in Fig. 2, the conveyance device consists of a pair of parallel flat belt conveyors A4, each of which has a substantially horizontal linear mounting surface, and a belt conveyor A4 that is in contact with the inside of the belt conveyor and has a height of about 3F on the mounting surface. A pair of similar belt conveyors B5 are arranged, and optical sensors A81. B82, a stopper 83 provided at the end point and movable up and down, a belt interval variable mechanism 84 (not shown in detail) that changes the parallel interval of the belt conveyor according to the dimensions of the printed board unit l, and a belt conveyor drive mechanism. It consists of 85.

First, one piece of the printed board unit 1 with the protruding member 3 of the insertion/extraction mechanism attached to the front part is placed at the starting point, with the front part in a fixed position in the conveying direction, the protruding part on the belt conveyor A4, and the printed board 2. The portion is placed on belt conveyor B5.

Then, the optical sensor A81 detects the placement of the unit, starts the belt conveyor drive mechanism 85, reaches the end point, and the optical sensor B82 senses the position where the projecting member 3 has moved a little further after coming off the belt conveyor A4. , stop the conveyor.

When the second conveyor stops, the stopper 83 rises and appears above the mounting surface, and then the conveyor moves slowly (in reverse), and the trailing edge 7 of the printed board unit 1 hits the stopper 83, stopping it precisely at a predetermined position. do.

Thereafter, the printed board unit 1 is grabbed and mounted by the robot hand of the automatic inspection and testing device.

The reason for positioning by stopping the rear edge 7 against the stopper 83 at this end point is that the front member 3 varies depending on the various printed board units 1, so it is necessary to position the rear edge 7 by abutting the front against the stopper. If so, the position of the stopper must be changed according to the front protrusion size and type of the member 3 of the printed board unit 1, but the rear part of the printed board unit 1 is only provided with a connector for plug-in, and other parts are not attached. This is because there is almost no need to protrude and attach the stopper 83, and therefore, there is no need to change the position of the stopper 83 for each type of printed board unit 1, which makes it extremely simple.

Furthermore, as a method of driving the belt conveyors A4 and B5 at the same speed, various methods can be considered, such as the one shown in FIG.

In the same figure (a), the belt conveyor A4 is connected to the large pulley 41,
The belt conveyor B5 is placed on each of the small pulleys 51, the large booby IJ41 and the small pulley 51 are arranged coaxially, the belt conveyor A4 is placed on the large pulley 41, the belt conveyor B5 is placed on the small pulley 51, and the pulley radius This is a case where a step is formed by the difference in conveyor speed, and the conveyor speed is driven at the same speed by separate drive sources.

In the figure (b), belt conveyors A4 and B5 of the same length are hung on pulleys 40 of the same size, and are arranged with a step above and below, and both conveyors are placed in a turning area other than the conveying area. This is a case where the wheels are aligned at the same level and driven at the same speed using the same drive wheels 50.

In addition, although not shown, there is also an orthodox method in which the drive wheels of each conveyor are finally driven at the same speed from one drive source via gears, chains, etc.

Further, this device has versatility because the parallel spacing of the belt conveyor can be changed according to the width dimension of the printed board 2 by a belt spacing variable mechanism 84. Furthermore, the printed board unit can be conveyed regardless of the presence or absence of the protruding member 3, and the printed board unit without it is conveyed with both side edges 6 placed on the belt conveyor B5.

〔Effect of the invention〕

As described above, the printed board unit conveying device of the present invention can transport the printed board to a predetermined position without shaking even when a protruding structure is attached to the side edge of the printed board, leading to automation in later processes. It also contributes to the rationalization of the assembly process, which has great effects.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is an embodiment of the present invention, and FIG. 3 is a diagram showing various drive mechanisms of a belt conveyor. In the figure, ■ is a printed board unit, 2 is a printed board, 3 is a member, 4 is a belt conveyor A, 5 is a belt conveyor B, 7 is a trailing edge, 41 is a large pulley, 51 is a small pulley, 82 is an optical sensor B1 6 is a side edge, 40 is a pulley, 50 is a drive wheel, 81 is an optical sensor A1, 83 is a stopper, 84 is a belt interval variable mechanism, and 85 is a belt conveyor drive mechanism. Figure 2 of the tree with the sound of the first fruit of the moon

Claims (1)

[Claims] In contact with the inside of a pair of parallel belt conveyors A (4),
A head of a predetermined size is provided on the mounting surface, and there is another pair of belt conveyors B (5) at the same speed, and the protrusion of the member (3) protruding from both side edges (6) of the printed board (2). A conveying device for a printed board unit, characterized in that the printed board unit (2) is conveyed by being placed on the belt conveyor A (4), and the printed board (2) portion is placed on the belt conveyor B (5).