JPH02131892A - Holding device for part - Google Patents

Abstract

PURPOSE:To correctly hold in specified state even for the parts of different external shapes and such a part that the mutual positional relation of the external shape and lead line fluctuates by providing a finger diving unit freely bendably to a movable block and arranging the movable block freely movably horizontally to a slide block. CONSTITUTION:A vacuum generation device is made nonoperational, a finger driving unit 15 is inclined by the same angle by profiling to the inclination of an electronic part 33 and the part 33 is interposed by a finger 17 in a reasonable state. Vacuum passages 22, 27 with suction port are made vacuous through vacuum hoses 21, 26 by operating the vacuum generation device in this state and this unit 16 is fixed at the angle of this time and a slide block 9 is fixed at the position where it is moved in the horizontal direction in accordance therewith respectively. Thereafter, pressurized air is fed from an air hose 4, the piston 2 of a cylinder 1 is ascended, a part holding unit is moved by a transfer device and the electronic part 33 is inserted in a printed circuit board.

Description

[Detailed Description of the Invention] Industrial Application Fields The present invention relates to a component holding device used in the head of an insert machine for inserting electronic components into a printed wiring board, an assembly robot, a rock dedicated to assembly, etc. 7 Regarding the loading mechanism. Unique technology> This type of component holding device that has been used in the past is constructed on the premise of always holding the component in a constant state, and generally the axis of the device and the axis of the component are aligned. It is designed to be retained. In addition, when handling parts with long lead wires, such as electronic component insert machines, if the external shape of the parts, holding conditions, and shape of the lead wires are different, the lead wires may differ depending on the external shape of the parts. Ill!
Since it is necessary to correct the relationship, a lead wire straightening device is also used to forcibly straighten the lead wire while holding the component. (Problems to be Solved by the Invention) In the case of the above-mentioned component holding device, if the outer shape of the component is distorted diagonally, the component cannot be held vertically.
There is a possibility that it will become lighter if the retained parts are transferred and inserted into the specified position accurately. *If a component is held diagonally, the center of the component holding device and the center of the lead wire will be misaligned when it is pulled out from the lead wire straightening device, and the effect of misalignment due to the spring pack of the lead wire is likely to be large. However, there was a problem in that it caused insertion errors and reduced the reliability of the insertion process. The present invention has focused on this point, and has been made for the purpose of obtaining a component holding device that can properly hold components even if the external shapes and postures of the components are different, and that does not cause the above-mentioned "interval i" point. It is. Means for Solving the Problems> In order to achieve the above-mentioned object, in this invention, a slide block that can be moved up and down supports a movable block so as to be movable and rotatable along a horizontal plane, and the movable block is supported during suction. A vacuum device is provided to fix the fins in close contact with the slide block, and a vacuum device is provided at the lower end of the movable block to support the fin drive unit via the ball pongee receiver and to fix the ball pongee receiver during suction. The fins mentioned above are provided with a plurality of 7-in gears that hold the parts between the drive unit and the drive unit. <Function> Since the slide block, movable block, and ball bearing part form a 7-rotating mechanism, the finger drive unit can be bent freely relative to the movable block, and the movable block can freely be horizontally moved relative to the slide block. You can move in the direction. Therefore, even if the part is inclined when one fin is holding the part, the attitude and position of the finger drive unit changes to follow the inclined outline, and the part is reliably held in the same attitude. In addition, when straightening the lead wire, position the lead wire straightening device so that the center of the lead wire after straightening coincides with the center of the component holding device, so that the center position of the lead wire does not shift. This will not cause insertion failure. Embodiments Next, an embodiment in which the present invention is implemented in a head of an insert machine for inserting electronic components into a printed wiring board will be described. Figure 1 shows the state where the component holding device is directly above the lead wire straightening device, Figure 2 shows the state just before the component is clamped,
Figure 3 shows the state in which the parts are clamped. In the figure, 1 is a shilling having a piston 2 inside;
3 and 4 are air hoses connected to a pressurized air source (not shown), and 5 and 6 are cushions 1. 8 is a housing, 9 is a slide block, the tip of the rod 2a of the piston 2 is connected to the slide block 9, and fi
It is designed to be able to move up and down within the housing 8 using 8a as a bending guide. 10 is a fixing nut, 11 is a movable block equipped with a disc-shaped slide plate 11a on the upper part, and the slide plate 11a is inserted into the holding recess 9a formed in the slide block 9, and the holding recess 9a is inserted into the slide block 9.
It is supported by a large number of balls 12 arranged concentrically on the lower surface of the machine, so that it can move forward, backward, left and right, or rotate. Reference numeral 15 indicates a ball bearing section consisting of a receiving section 15a formed at the lower part of the movable block 11 projecting downward from the housing 8, and a ball 15b held by the receiving section 15a, and 16 indicates a plurality of 7-inch if-17 cylinders. This finger drive unit 16 is fixed to a ball 15b of a ball bearing 15 by a mounting screw 19. Reference numeral 18 denotes an air hose whose fins are connected to a pressurized air source (not shown) for driving. /-17 are constructed so that they open and close while remaining parallel to each other. 21 is n″1 connected to a vacuum generator (not shown)
! The hose 22 is provided on the upper surface of the holding recess 9a of the slide block 9, and is inserted into the holding recess 9a at a plurality of locations.
and a vacuum path with a suction port communicating with the vacuum hose 21;
23 is a packing, and when the vacuum generator is operated, the vacuum path 22 is evacuated through the vacuum hose 21, and the movable block if is mounted ry1 above and fixed in that position.6 and 26 are attached to the vacuum generator (not shown). The connected vacuum hose 27 is provided on the inner surface of the receiving part 15a of the bulb pongee receiving part 15, opens into the receiving ffls 15a at a plurality of places, and is connected to a vacuum path with a suction port 2 that communicates with the vacuum hose 26.
8 is a packing, and when the vacuum generator operates, the vacuum path 27 becomes vacuumed through the vacuum hose 26, and the ball 15
b is the receiving portion 15al. : It is configured to be attracted and fixed in that position.

31 is a correction unit of the lead wire correction device, 32 is a fixing plate, 33 is an electronic component, 34a and 34b are lead wires, and the correction unit 31 corrects the bending and parallelism of the lead wires 34a and 34b by a correction mechanism (not shown). It is designed to correct.

Next, the operation will be explained. The operation of holding the electronic component 33 is performed with the component holding device positioned directly above the lead wire straightening device and with the center line of both aligned with line A-A in FIG.
First, pressurized air is supplied from the air hose 3 and the shilling 1
The piston 2 descends, and at the same time, the slide block 9, movable block 11, and finger drive unit 16 also descend, resulting in the state shown in FIG. To date, 31 orthodontic units have been
is operated to correct the lead wires 34a and 34b. Then, when pressurized air is supplied from the air hose 18, the plurality of 7-in.
17 is driven, the interval between them narrows, and the electronic component 33 is clamped.

At this time, the vacuum generator is not operating, and the finger drive unit 16 is freely bent in the three-dimensional direction in the direction of pongee by the 7-rotating M, and the movable block 1
1 is supported so that it can move freely in the horizontal direction with respect to the slide block 9. For example, when the electronic component 33 is tilted at an angle θ as shown in ttS3, the fin -17 is supported so that it can move freely in the horizontal direction. When the electronic component 33 is clamped, the fins of the drive unit 16 are also tilted by the same angle θ following the electronic component 33, and the electronic component 33 is clamped without strain. Note that the electronic component 33 can be held easily not only when it is tilted, but also when its external shape is different or distorted. In this state, when the vacuum generator is operated and the vacuum paths 22 and 27 with suction ports are evacuated through the vacuum hoses 21 and c/26, the fin drive unit 16 is at the angle θ at that time, and the slide block 9 is at this angle. They are each fixed at the position that was moved horizontally according to the . When the fixing is completed, pressurized air is supplied from the air hose 4 to raise the piston 2 of the cylinder 1, and the component holding device is moved by a transfer device (not shown) such as a robot device, and then the electronic component 33 is placed on the printed wiring board. It is inserted. In this case, the lead wire 34a after correction by the correction unit 31
Since the electronic component 33 is held with the center of the lead wires 34t and 34b aligned with the center of the component holding device, the positions of the lead wires 34t and 34b will not shift even if the main body of the electronic component 33 is tilted. It is accurately inserted into the predetermined hole of the printed wiring board.

Effects of the Invention> As is clear from the above-described embodiments, the present invention allows the fins that clamp parts to freely bend the drive unit relative to the movable product, and furthermore, The block is configured to have a 7-rotating mechanism so that it can move freely in the horizontal direction relative to the slide block, and it can also be fixed using a vacuum device in the state where the bending and movement described above have been performed. Therefore, even when parts have different external shapes or where the mutual positional relationship between external shapes and lead wires fluctuates, it is possible to easily and accurately hold them in a predetermined state.For example, when inserting an electronic component, If applied to an insert machine, it will be possible to improve the GI order of insertion work. In addition, since the lead wire can be held accurately along the outer shape of the part without applying stress, the contact prevention space required to prevent the holding fingers from coming into contact with adjacent parts can be reduced. This makes it possible to increase the mounting density of electronic components on printed wiring boards.

[Brief explanation of drawings]

tIS1 to ffi3 are cross-sectional views of an embodiment of the present invention at different operation stages, 9...
Slide block 11...Movable block 15.
...Ball bearing part 16...Finger drive J unit, 17...Finger 21.26...Vacuum hose 22.27...Vacuum path with suction port, 31...Lead #a correction unit, 33...Electronic component 34 recommendation 34b...Lead wire II1 Figure 11g2Il1 A

Claims (1)

[Claims] 1. A movable block is supported in a vertically movable slide block so as to be movable and rotatable along a horizontal plane, and
A vacuum device is provided to fix the movable block in close contact with the slide block during suction, and a vacuum device is provided at the lower end of the movable block to support the finger drive unit via a ball bearing and to fix the ball bearing during suction. . A component holding device, wherein the finger drive unit is provided with a plurality of fingers for holding the component.