JPH0520000Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a chip component supply device used in a chip component mounting machine for mounting chip components onto a printed circuit board, and particularly relates to a chip component feeding device used in a chip component mounting machine for mounting chip components onto a printed circuit board. This invention relates to a chip part feeding device suitable for aligning and feeding cylindrical chip parts.

(Prior Art) In Japanese Patent Application No. 63-6932 filed by the present applicant, one end of the tubular feeding path of the chip component is used as the entrance of the chip component, and a component stopper has an opening for taking out the component and an air suction hole. A member is connected to the other end of the tubular feeding path, and a shutter is provided to open and close the opening for taking out parts, and the shutter closes the opening so that only the entrance is open, and the tubular feeding path is closed. A chip component feeding device has been proposed that feeds chip components in a feeding path by air suction.

(Problem to be solved by the invention) Now, in the conventional device proposed in the above-mentioned Japanese Patent Application No. 63-6932, an electromagnetic opening/closing valve is used to turn on and off the air suction of the air suction hole, and the shutter is moved. Before opening the opening for taking out parts, turn off the air suction of the air suction hole, so that no extra force is applied to the chip parts. The chip parts were transferred by suction.

However, with such a structure, it is necessary to accurately control the timing of the opening/closing operation of the shutter and the opening/closing operation of the electromagnetic opening/closing valve for turning on and off the air suction of the air suction hole. A space for arranging the electromagnetic valve is also required, which is disadvantageous when speeding up the supply of chip parts and downsizing are taken into consideration.

The present invention eliminates the above-mentioned drawbacks and improves the structure of the shutter that opens and closes the parts removal opening of the parts stopper member, thereby eliminating the need to open and close the air suction hole with a valve. To provide a chip component supply device which disables air suction by an air suction hole when the chip begins to open or opens half-open, and allows chip components to be smoothly taken out when a component take-out opening opens.

(Means for Solving the Problems) In the present invention, one end of a tubular feeding path for chip components is used as an entrance for the chip components, and a component stopper member having a component ejection opening and an air suction hole is provided in the tubular feeding path. A shutter is connected to the other end and opens and closes the opening for taking out the parts, and the shutter closes the opening so that only the entrance is open, and the chip parts in the tubular feeding path are air-filled. In a chip component feeding device that feeds chips by suction, an external communication groove is formed on a surface of the shutter that faces the component stopper member, and when the shutter starts to open or is in a half-open state, the chip is fed through the external communication groove. The air suction hole is configured to communicate with the outside.

(Function) In the chip component feeding device of the present invention, an external communication groove is formed on the surface of the shutter that faces the component stopper member, and when the shutter starts to open or is in a half-open state, The air suction hole can be communicated with the outside to release the reduced pressure inside the stopper member, thereby substantially disabling air suction through the air suction hole. This eliminates instability in the posture of the chip parts due to continued air suction during the opening operation of the shutter. Also, when the shutter is fully opened, the sufficiently large opening for taking out parts is fully opened.
After all, the air suction from the air suction hole can be ignored. Therefore, it is possible to omit the electromagnetic opening/closing bubble, which has conventionally been indispensable for opening and closing the air suction hole, and it is possible to reduce costs and installation space. Furthermore, it is no longer necessary to control the timing of opening and closing of the electromagnetic opening/closing valve and the shutter in synchronization, which is advantageous when attempting to speed up the supply of chip parts.

(Example) Hereinafter, an example of the chip component supply device according to the present invention will be described with reference to the drawings.

FIG. 1 shows the overall configuration of the present invention. In this figure, what is indicated by a virtual line 1 is the supply base of the chip component mounting machine, and the main body frame 10 of the chip component supply apparatus is placed on the supply base 1. An auxiliary frame 10A is fixedly integrated with the main body frame 10.

A slide guide 11 is erected and fixed at the left end of the auxiliary frame 10A.
A middle tube type hopper 13 is mounted on the upper part of a slider (also serving as a hopper mounting base) 12 which is supported so as to be slidable in the vertical direction. A large number of valve-shaped cylindrical chip parts 15 are accommodated in the middle tube type hopper 13, and a lid 17 having an air hole 16 is fitted into the upper opening of the hopper 13. Also, a motor mounting plate 18 is provided on the lower left end of the auxiliary frame 10A.
is fixed, and the DC for lifting the hopper is fixed to the mounting plate 18.
Motor 19 is fixed. This motor 19 has a speed reducer 19 with A, a cam (or crank) 20 is fixed to its rotating shaft, and the cam 20 is connected via a cam follower (or link) 21 to a slider 12 that also serves as a hopper mounting base. Ru. Therefore,
As the motor 19 rotates, the slider 12 and hopper 13 perform reciprocating up and down movements. However, FIG. 1 shows the raised position of the hopper 13.

A mounting plate 22 is installed on the left end side of the auxiliary frame 10A.
is fixed upright, and the mounting plate 22 holds a connector 26 connected to the upper end of a feeding tube (transparent resin tube) 25 forming a tubular feeding path, and the connector 26 is connected to the tube 25. connecting pipe 27
are connected and fixed, and the connecting pipe 27 is connected to the hopper 1.
It is inserted into the lower supply hole of No.3.

At the lower end of the tube 25, there are
As shown in the figure, a component stopper member 30 is connected and fixed, and the component stopper member 30 is disposed on a stopper holder 31 fixed to the right end of the main body frame 10. Here, a convex portion 32 is formed in the lower part of the component stopper member 30, and a concave portion 33 is formed in the holder 31, and the component stopper member 30 is positioned by fitting the convex portion 32 into the concave portion 33. As shown in FIG. 1, the tube 25 is loosely positioned by a guide member 35 erected on the main body frame 10, and an optical sensor 36 is arranged corresponding to the boundary between the vertical and horizontal portions of the tube 25. ing. That is,
The optical sensor 36 includes a light emitting element S1 and a light receiving element S2 facing each other with a transparent tube 25 in between.
All of these are attached to the auxiliary frame side. Note that a tube holder 37 is fixed to the auxiliary frame 10A in order to position the tube 25 at the detection position of the optical sensor 36.
The optical sensor 36 is connected to the cylindrical chip part 15.
When it is detected that there is a chip, the DC motor 19 is turned off, the movement of the hopper 13 is stopped, and the supply of chip parts is stopped. Note that the sensor momentarily turns on and off when a part passes, but the motor 19 has inertia and virtually never stops. When the parts are connected in a line starting from the stopper member 30 and the end blocks the light from the sensor, it stops. This ensures that the cylindrical chip part 15 exists only in the horizontal portion of the tube 25.

As shown in FIGS. 2 to 7, the component stopper member 30 located at the tip of the tube communicates with a hole 40 communicating with the tube 25, an opening 41 for taking out a component, and an opening 41 for taking out a component. It has a narrow groove 42 and an air suction hole 43 located on the distal end side of the groove. Here, as shown in FIG. 7, the component removal opening 41 includes a substantially circular concave portion 41A that is lowered to the next level, a positioning groove 41B with a semicircular cross section that is continuous with the hole portion 40, and a positioning groove 41B that is continuous with the hole portion 40.
1B and a stopper surface 41C formed by the boundary between the narrow groove 42 and the narrow groove 42. The end of the most advanced cylindrical chip component 15 abuts against this stopper surface 41C and is positioned.

The air suction hole 43 is connected to the filter 44 on the holder 31 side and the air suction hole 4 as shown in FIGS.
5. Connected to a negative pressure source such as a vacuum pump via a hose 46. A slide guide 50 is fixed to a position near the right end of the main body frame 10, a slider 51 is held slidably in the lateral direction with respect to the slide guide 50, and a shutter mounting member 52 is pivotally attached to the slider 51. . This mounting member 5
A shutter 53 for opening and closing the parts removal opening 41 is integrally fixed to the part 2. An extension spring 54 is arranged between the mounting member 52 and the main body frame 10. Therefore, the tip of the mounting member 52 is biased downward, and the shutter 53 normally contacts the upper surface of the component stopper member 30 to prevent the component stopper member 30 from lifting up.

Component stopper member 30 of the shutter 53
As shown in FIGS. 2 to 6, an oval external communication groove 70 is formed on the lower surface that is in contact with the . The external communication groove 70 does not communicate with the outside when the shutter 53 closes the component removal opening 41 of the component stopper member 30 as shown in FIG. An air passage communicating with the outside is formed through the chamfered part 30A of the component stopper member 30 in a slightly open or half-open state, and the reduced pressure state inside the stopper member is quickly released. When the external communication groove 70 becomes an air passage to the outside, the shutter 53 is further opened and the external communication groove 70 becomes an air passage to the air suction hole 43.
The air suction by the air suction hole 43 is substantially disabled during this period. Also,
As shown in FIG. 6, when the shutter 53 is fully open, both the component ejection opening 41 and the narrow groove 43 are open, and even if the air suction hole 43 continues to suck air, the chip component 15 is not sucked. Force does not really work.

In order to operate the slider 51, an air cylinder 55 is fixed to the main body frame 10, and the air cylinder 55 is connected to a compressed air source via a hose 56, an electromagnetic opening/closing valve 57, and a hose 58. When compressed air is applied to the cylinder 55, the piston rod 59 extends and drives the slider 51 and shutter mounting member 52 to the right. That is, as shown in FIGS. 3 and 6, the shutter 53 opens and the opening 41 is exposed. When the compressed air to the cylinder 55 is turned off, the piston rod 59 retracts and the shutter 53 closes the opening 41 as shown in FIGS. 2 and 4.

A setting piece 60 is provided on the lower side of the main body frame 10.
and a lock pawl 61 are attached. The setting piece 60 engages with a stepped portion of the supply unit base 1 on the mounting machine side. An extension spring 62 is disposed between the lock pawl 61 and the main body frame 10 and biases the lock pawl 61 in the releasing direction (counterclockwise direction in FIG. 1). The lock pawl 61 moves the lock lever 63, which is pivotally supported on the main body frame 10, by the imaginary line Q in FIG.
When pulled up as shown in FIG. 1, the main body frame 10 and all attached mechanisms can be removed from the base 1. When the lock lever 63 is in the state of the imaginary line R, it is in the mounting state, and the lock lever 63 engages with a pin 64 on the mounting machine side.

Next, the operation of the overall configuration of the above embodiment will be explained. The rotation of the DC motor 19 causes the middle tube hopper 13 to move up and down via a cam (or crank) mechanism. Therefore, the bulk cylindrical chip parts 15 in the hopper fall down the vertical part of the feed tube 25 from the lower part of the hopper through the connecting pipe 27 and reach the left end of the horizontal part of the tube. In the horizontal portion, the chip component feeding effect due to gravity is eliminated. For this reason, as shown in FIGS. 2 and 4, the opening 41 for taking out the components of the component stopper member 30 is sealed with a shutter 53, leaving only the upper end of the connecting pipe 27 open.
Vacuum suction is performed through the air suction hole 43. As a result, the air hole 16, the inside of the hopper 13, the connecting pipe 27,
An air flow is generated through the path of the tube 25 and the air suction hole 43, and the chip part 1 in the horizontal part of the tube is generated.
5 receives a feeding force in the right direction, and the most advanced tip part 15 comes into contact with the stopper surface 41C and stops.
That is, the most advanced chip component 15 has an opening 41
It will be positioned and stopped in the positioning groove 41B.

Thereafter, the electromagnetic opening/closing valve 57 is opened, compressed air is supplied to the air cylinder 55, and the slider 51 and the shutter mounting member 52 pivotally supported thereon are moved to the right. As a result, the external communication groove 70 forms an air passage communicating with the outside when the shutter 53 in FIG. When the chip component 1 is open, the component ejection opening 41 and the narrow groove 42 following it are in an open state, and air suction continues into the chip component 1.
5. The state of not working continues. Then, when the shutter is fully open as shown in FIGS. 3 and 6, the suction pin 75 on the mounting machine side is lowered and the most advanced cylindrical chip component 1 is removed.
5 is adsorbed, lifted and transferred. During this transfer operation, air suction through the air suction holes 43 continues, but as mentioned above, no suction force is applied to the chip parts 15, so no lateral feeding force is applied to each chip part. They are in a mutually loosened state, and the suction pin 7
There was no failure in taking out the chip component 15 by No. 5. In addition, if there is a continuous horizontal part of the tip 25 from the horizontal part to the vertical part of the tube 25,
There is a possibility that even the most advanced chip part 15 will be subjected to lateral forces due to gravity. Furthermore, even if the suction is stopped, if there are parts at the rear to which the force of gravity is applied, the parts lined up in a row will not become loose. Therefore, the optical sensor 36 located at the end of the horizontal part of the tube detects the presence or absence of the chip part 15 at the end position of the horizontal part, and when the presence of a chip part is detected, the operation of the DC motor 19 is stopped and the hopper 13 to stop the supply of chip parts to the vertical portion of the tube. Therefore, when the chip parts are sucked by the suction pins 75, each chip part is located only in the horizontal portion of the tube.

In the above embodiment, the shutter 53 is operated by the air cylinder 55, but it is also possible to adopt a structure in which the shutter 53 is opened and closed by a cam mechanism or the like on the mounting machine side on which the chip component supply device is placed. good. In this case, no electromagnetic opening/closing valve is required.

(Effects of the Invention) As explained above, according to the chip component feeding device of the present invention, one end of the tubular feeding path for the chip component is used as the entrance for the chip component, and the chip component has an opening for taking out the component and an air suction hole. A stopper member is connected to the other end of the tubular feeding path, and a shutter is provided for opening and closing the opening for taking out parts, and the opening is closed by the shutter so that only the entrance is open, and the tubular feeding path is closed. In a configuration in which chip parts in a feeding path are fed by air suction, an external communication groove is formed on a surface of the shutter that is in contact with the part stopper member, and when the shutter starts to open or is in a half-open state, a groove for communicating with the outside is formed. Since the air suction hole is communicated with the outside through the communication groove, it is possible to take out chip parts while continuing air suction through the air suction hole. Open/close valves can be omitted. Therefore, it is possible to simplify the configuration, save space, and reduce costs. In addition, it is no longer necessary to precisely match and control the timing of opening and closing operations between the electromagnetic on-off valve and the shutter.
In this respect, it is possible to reduce costs and speed up the supply of chip parts.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing an embodiment of the chip component supply device according to the present invention, FIG. 2 is a front sectional view showing the main part of the embodiment when the shutter is closed, and FIG. The figure is a front cross-sectional view when the shutter is open, FIG. 4 is a plan view of the essential configuration of the embodiment when the shutter is closed, FIG. 5 is a plan view when the shutter is half open, and FIG. 6 is a plan view when the shutter is fully open. Plan, 7th
The figure is a - sectional view of FIG. 4. 1... supply unit base, 10... body frame,
13... Middle tube type hopper, 15... Cylindrical chip part, 19... DC motor, 25... Feeding tube, 27... Connecting pipe, 30... Part stopper member, 36... Optical sensor, 41... ... Opening for parts removal, 41A ... Recess, 41B ... Positioning groove, 41C ... Stopper surface, 42 ... Narrow groove, 43 ... Air suction hole, 53 ... Shutter, 55 ... Air cylinder, 70 ...External communication groove.

Claims (1)

[Scope of utility model registration request] One end of the tubular feeding path for the chip component is used as an entrance for the chip component, a component stopper member having a component ejection opening and an air suction hole is connected to the other end of the tubular feeding path, and the component removal opening is connected to the other end of the tubular feeding path. A chip component supplying device that is provided with a shutter that opens and closes, and feeds the chip components in the tubular feeding path by air suction with the shutter closing the opening so that only the entrance is open.
An external communication groove is formed on a surface of the shutter that is in contact with the component stopper member, and the air suction hole is communicated with the outside through the external communication groove when the shutter starts to open or is in a half-open state. Features of chip parts supply device.