JPH0120560B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an electronic component insertion device for inserting an electronic component having a plurality of lead wires extending in the same direction from a body into a printed circuit board.

[Background of the invention]

Conventionally, the method of inserting this type of component is to align the insertion hole of the printed circuit board with the lead wire of the electronic component to be inserted by guiding or chucking the lead wire to align the tip of the lead wire with the hole position of the printed circuit board. It depends on how you insert it. However, according to the above method, the lower lead wire of the component body is guided.
Or, after inserting the guide member or chuck member into a printed circuit board for checking, it is necessary to escape and retreat beyond the planar outermost dimension of the component body, and the insertion space inevitably requires a space larger than the planar outermost dimension of the component body. For example, when parts are closely spaced, automatic insertion is not possible. Furthermore, according to the conventional method, the entire board would have to be large to enable automatic insertion, and in reality, it was impossible to enable fully automatic insertion.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide an electronic component insertion device that can be inserted at high density.

[Summary of the invention]

In order to achieve the above object, the present invention provides an electronic component supply station that supplies electronic components, a station that detects the position of electronic component lead wires, and a station that inserts electronic component lead wires into a board in the same direction. An electronic component having a plurality of extending lead wires is transported to the electronic component supply station, and the electronic component is transported by cutters arranged at different levels so that the lengths of the lead wires are different from each other in the axial direction of the lead wires. means for cutting each at right angles, a station for pinching the electronic components conveyed to the electronic component supply station and detecting the position of the lead wires, and a movement for sequentially moving the electronic components to a station for inserting the lead wires. means and a station for detecting the lead wire position, the lead wire position is determined by capturing an image of reflected light from a light source that illuminates the cut surface of the cut lead wire from a position opposite to the cut surface of the lead wire. a detecting means; a board holding means for movably holding a board having insertion holes into which lead wires of the electronic component are inserted at a station for inserting the lead wire in a two-dimensional direction; and a board holding means for holding the electronic component. an insertion means for inserting lead wires into corresponding insertion holes in order of length by an insertion head that moves the lead wires in multiple steps toward the board; and the lead wires detected by the lead wire position detection means. Insertion based on the lead wire tip position information obtained by measuring the center position coordinates of the cut surface and the corresponding position information of the lead wire insertion hole of the board stored in advance. control means for controlling the position of the substrate holding means so that the substrate holding means is aligned with the hole, and controlling the operation of the insertion means based on the operation of the moving means and information on the insertion order of the lead wires stored in advance; It is something to be prepared for.

[Embodiments of the invention]

The present invention will be specifically described below based on embodiments shown in the drawings.

FIG. 1 shows an electronic component in which a plurality of lead wires of different lengths extend in the same direction from the main body. FIG. 2 is a perspective view showing the overall schematic configuration of one embodiment of the electronic component insertion device according to the present invention, and FIG. 3 is an enlarged view showing the part where the lead of the electronic component is inserted into the insertion hole of the printed circuit board. FIG. 4 is a diagram showing a schematic configuration of a device for detecting the position of the lead end of an electronic component, and FIG. be. That is, 1 is an electronic component in which two lead wires 2 and 3 having different lengths h (approximately 2 mm) extend in the same direction from a main body portion 1a. Reference numeral 4 denotes a group of magazines in which various taped electronic components 1 are stored in a radial manner. 5 is in magazine group 4,
The main body portion 1a of a predetermined type of electronic component 1 sent together with the tape to the terminal of a predetermined magazine is clamped, and a length of h (approximately 2 mm) is cut into the lead wires 2 and 3 using a cutter (not shown). Cut with a difference,
This is a transport arm member that rotates in the horizontal direction and transports the electronic component 1 to the position of the supply station A. 7
is an index table that supports the chuck claws 8, 9 that clamp the electronic component 1 and the pressing part 10 that presses the upper end of the main body part 1a so as to be slidable in the vertical direction, and the chuck claws 8, 9 are closed. A spring (not shown) is installed inside to position the chuck pawls 8, 9 and the pressing part 10 at the upper end position, and the chuck pawls 8, 9 move to the lower end position and are in the open state. A chuck mechanism 11 equipped with a locking mechanism (not shown) for stopping the movement of the chuck pawls 8 and 9 when
It is installed. B is a lead wire position detection station that detects the tip position of each lead wire extending from the main body portion 1a of the electronic component 1. C moves the table on which the printed circuit board is placed in the X-axis direction and Y-axis direction based on the data on the tip position of each lead wire detected by the B station, and inserts each lead of the electronic component 1 into the insertion hole of the printed circuit board. This is a lead wire insertion station that sequentially inserts wires 2 and 3. Above the chuck mechanism 11 located at the lead wire insertion station C, a drive mechanism 13 for driving the chuck mechanism 11 is mounted on a column 1 extending upward from the base 12.
It is attached to 2a. This drive mechanism 13 is composed of two cylinders 14 and 15 that move the chucks 8 and 9 of the chuck mechanism 11 downward in two stages.A rod 16 is connected to the output shaft of this cylinder 14, and this rod A sleeve 18 is placed around the cylinder 16, and the sleeve 18 is connected to the output shaft of the cylinder 15 via a plate 19. 20 is a lock release mechanism which descends and acts to release the lock of the lock mechanism;
It is attached to the cutting station A position of the support column 12a. 21 is the lead wire 2 of the electronic component 1 held between the chuck claws 8 and 9 of the chuck mechanism 11;
This is a lead wire position detection device that captures an image of the tip of the lead wire from below and detects its position.As shown in FIG.
4. A pair of translucent mirrors 25, imaging lenses 26, TV cameras, solid-state image sensors arranged in two-dimensional directions, and devices for scanning slits in front of the light-receiving elements are installed in the X-axis direction and the Y-axis direction. It is composed of an imaging device 27 consisting of, etc. 28 is a reference hole (not shown) provided in the printed circuit board 30
A reference pin (not shown) is provided on the top surface for inserting and positioning the printed circuit board 30, and the X-axis is moved in the X-axis direction by a feed screw mechanism connected to the X-axis motor 31. Direction table, 29 is X
The axial table 28 is mounted on the tower, and the Y-axis motor 3
This is a Y-axis direction table that moves in the Y-axis direction by a feed screw mechanism connected to 2. However, in response to a command from the control device 35, the transfer arm member 5 rotates and stops at a magazine in the magazine group 4 that stores a predetermined type of electronic component 1 in a taped state, and then moves to the end of the magazine. The lead wire portions 2 and 3 of the electronic component 1 located at
3 with a difference in length h, and then the transfer arm member 5 rotates to the supply station A.
Move to and stop. Then, the lock release mechanism 20 is actuated by a command from the control device 35, and the chuck pawls 8 and 9 of the chuck mechanism 11 located there are closed from the open state by the built-in spring force, and the supply station A, ie, The main body 1a of the electronic component 1 placed between the chuck claws 8 and 9 of the chuck mechanism is held. Then, the index table 7 rotates by a predetermined angle in response to a command from the control device 35, and the chuck mechanism 11, which clamps the electronic component 1, is positioned above the lead wire position detection device 21 and stops. As shown in FIG. 4, the imaging device 27 irradiates the tips of the lead wires 2 and 3 with light from the light source 22 from below, and captures the reflected light image while scanning in a two-dimensional direction. A video signal is obtained, and it is converted into a picture element by being binarized by a binarization circuit, a memory circuit, an arithmetic processing circuit, etc. provided in the control device 35, and is converted into a "1".
The intermediate position of the level is determined based on the vertical synchronization signal and the horizontal synchronization signal, and the deviation (displacement amount) from the reference position set in advance as the position where the tips of the lead wires 2 and 3 should be relative to the insertion hole position is calculated. Detect. Here, since the reference position of the image capture screen and the reference position of the table are aligned in advance, alignment is possible by feeding back the deviation to the table. When the deviation of the tips of lead wires 2 and 3 from the reference position is determined in this way,
In response to a command from the control device 35, the index table 7 rotates at a predetermined angle and stops, and the lead wires 2, 3
The chuck mechanism 11 holding the electronic component 1 whose tip position has been determined stops at the insertion station C.

On the other hand, the insertion holes for inserting the lead wires 2 and 3 of the electronic component 1 are drilled at predetermined positions in the printed circuit board 30, so the position information can be recorded using paper tape, etc.
Record on a recording medium such as magnetic tape. Therefore, using an input device such as a paper tape reader, first insert the insertion hole 3.
6 is input into the control device 35, the positional deviation of the longer lead wire 2 stored in the storage device (not shown) is read out, and the position coordinates are calculated by a calculation circuit (not shown). A drive circuit (not shown) is driven to operate the X-axis motor 31 and the Y-axis motor 32 by a predetermined amount so that the corrected position coordinates are obtained, and the X-axis direction table 28 and Move the Y-axis direction table 29. Then, the center of the insertion hole 36 of the printed circuit board 30 placed on the X-axis table 28 and the axis position of the tip of the lead wire 2 are aligned in the X, Y plane. Next, the cylinder 14 is actuated to lower the rod 16 by a predetermined amount and the chuck mechanism 1 is closed.
1, the chuck claws 8, 9 and the pressing part 10
is lowered by a predetermined amount to guide only the tip of the longer lead wire 2 into the insertion hole 36, as shown in FIG. 5a. Next, the input device (not shown) is operated to input the position coordinates of the insertion hole 37, and the positional deviation of the short lead wire 3 stored in the storage device (not shown) is read out to input the position coordinates of the insertion hole 37. The coordinates are calculated and corrected by a calculation circuit (not shown), and the drive circuit (not shown) is driven to obtain the corrected position coordinates to drive the X-axis motor 31 and the Y-axis motor 32. Operate a predetermined amount and move the X-axis direction table 2
8 and the Y-axis direction table 29 are moved so that the center of the insertion hole 37 of the printed circuit board 30 and the axis position of the tip of the lead wire 3 are aligned in the X and Y planes. Note that if the distance between the insertion holes 36 and 37 does not match the distance between the lead wires 2 and 3, the longer lead wire 2 will be deformed. Next, actuate the cylinder 15 to move the sleeve 18 to the rod 1.
6, and the chuck claws 8, 9 and the pressing part 10 are also lowered, and the tip of the shorter lead wire 3 is also inserted into the insertion hole 3, as shown in FIG. 5b.
Enter 7. Further, when the cylinder 15 is actuated to lower the sleeve 18, the chuck pawls 8 and 9 stop lowering, and the chuck pawls 8 and 9 are opened against the spring force, and are maintained and pressed by the lock mechanism. The part 10 is further lowered to securely insert the lead wires 2 and 3 of the electronic component 1 into the insertion holes 36 and 37 of the printed circuit board 30 as shown in FIG. 5c.

In this way, by inputting information such as the type of electronic component and the positional coordinates of the insertion hole on the printed circuit board into the control device 35, the lead wires of the electronic components are sequentially and continuously inserted into the insertion hole of the printed circuit board. I can do it.

〔Effect of the invention〕

As explained above, according to the electronic component insertion device according to the present invention, it is possible to insert high-density electronic components, and also to be able to supply and align electronic components on different stations using an index table or the like. Since the insertion into the board can be performed sequentially in a series of operations, the speed can be increased. In addition, by storing information such as the position of the insertion hole on the printed circuit board in accordance with the various circuit boards and components, it is possible to deal with various circuit boards and components.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an electronic component according to the present invention, FIG. 2 is a perspective view showing a schematic configuration of an embodiment of an electronic component insertion device according to the present invention, and FIG. 3 is a diagram showing an electronic component in FIG. Fig. 4 is a block diagram showing an outline of the lead wire position detection device shown in Fig. 2, and Fig. 5 shows electronic components. FIG. 3 is a plan view showing a state in which the lead wires are successively inserted into the insertion holes of the printed circuit board. DESCRIPTION OF SYMBOLS 1... Electronic component, 2, 3... Lead wire, 4... Magazine group, 5... Transfer arm member, 7... Index table, 8, 9... Chuck claw, 10... Pressing part, 1
DESCRIPTION OF SYMBOLS 1...Chuck mechanism, 21...Lead wire position detection device, 27...Imaging device, 28...X-axis direction table,
29... Y-axis direction table, 30... Printed circuit board,
35...Control device, 36, 37...Insertion hole.

Claims (1)

[Claims] 1. An electronic component supply station A that supplies electronic components, a station B that detects the position of the lead wire of the electronic component, and a station C that inserts the lead wire of the electronic component into the board, extending in the same direction. Electronic components having a plurality of lead wires are transported to the electronic component supply station A, and the electronic components are transported by cutters arranged at different levels so that the lengths of the lead wires are different from each other in the axial direction of the lead wires. A means 5 for cutting each at a right angle; a station B that clamps the electronic component transported to the electronic component supply station A and detects the position of the lead wire; and a station C that inserts the lead wire. A moving means 7 that sequentially moves the lead wire, and a station B that detects the position of the lead wire, detect a reflected light image from the light source 22 that illuminates the cut surface of the cut lead wire from a position opposite to the cut surface of the lead wire. means 21 and 27 for capturing an image and detecting the lead wire position; and a station C for inserting the lead wire;
board holding means 28 and 29 for holding a board 30 movably in two dimensions, each having an insertion hole into which a lead wire of the electronic component is inserted; insertion means 13, 14, 15 for inserting lead wires into corresponding insertion holes in order of length using an insertion head; and a center position of the cut surface of the lead wire detected by the lead wire position detection means 21. The lead wire tip based on the positional information of the lead wire tip obtained by measuring the coordinates matches the insertion hole based on the corresponding positional information of the lead wire insertion hole of the board stored in advance. The substrate holding means 2
8, 29, and the insertion means 13, 14, 15 based on the operation of the moving means 7 and information on the lead wire insertion order stored in advance.
An electronic component insertion device comprising: a control means 35 for controlling the operation of the electronic component.