JP2803097B2 - Chip electronic component supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of mounting a chip electronic component (for example, a chip-type resistor, a chip-type multilayer capacitor, etc.) having no lead wire on a mounter device for mounting on a printed circuit board. The present invention relates to a tape transport type chip electronic component supply device suitable for supply.

[Conventional technology]

As described in Japanese Patent Application No. 61-273468, a conventional chip electronic component supply device is configured such that each chip electronic component is provided, for example, in a concave portion provided in the longitudinal direction of a paper tape (carrier tape). It is fitted and held. The carrier tape in which the chip electronic components are sealed in a number of recesses in this manner is mounted on a supply device in a state of being wound on a reel, and is intermittently rotated by a sprocket that engages with a perforation at the side edge of the tape. When the chip tape is intermittently conveyed at a pitch corresponding to the interval between the concave portions and comes to an opening position for taking out the chip electronic components on the supply device, the upper tape is peeled off from the carrier tape, and the exposed chip electronic components are exposed. Is sucked by the vacuum suction nozzle of the mounter device and taken out from the concave portion of the carrier tape.

[Problems to be solved by the invention]

In the chip electronic component supply device as described above, the chip electronic component must be accurately sent to the position of the vacuum suction nozzle of the mounter device. If a chip electronic component is erroneously attracted, the mounter position is stopped, which causes a reduction in the operation rate. The chip electronic component supply device is also called a tape feeder, and about 100 pieces are mounted and used in one mounter device. Therefore, even with one tape feeder, the mounter device stops due to a suction error of the chip electronic component, so that the reliability of the tape feeder must be maintained at a high level.

An object of the present invention is to provide a small and reliable mounting device that can adjust the supply position of electronic components so that the chip electronic components of a tape feeder are securely positioned at the position of a vacuum suction nozzle, and reduce chip electronic component suction errors of a mounter device. It is an object of the present invention to obtain a chip electronic component supply device with high reliability.

[Means for solving the problem]

A feature of the present invention is that a ratchet is intermittently rotated by a feed claw by a driving force obtained from a mounter device, and a chip electronic component supply intermittently supplies a chip electronic component held on a carrier tape by a sprocket connected to the ratchet. In the device, the axis of the fixed claw that prevents the ratchet from reversing is fixed to the main body of the chip electronic component supply device through an eccentric adjustment screw, and the eccentric amount accompanying the rotation of the adjustment screw is substantially equal to the tangent of the ratchet. The fixed position of the axis of the fixed claw with respect to the main body in the same direction is movable.

Further, in the chip electronic component supply device, the main body is fixed via an eccentric positioning pin on a surface to be mounted on the mounter device, and a fixing position of the main body with respect to the mounter device by an eccentric amount accompanying rotation of the positioning pin. Is movable.

[Action]

According to the present invention, the axis of the fixed claw is fixed to the main body of the chip electronic component supply device via the adjusting screw with the eccentricity,
The position of the axis of the fixed claw with respect to the main body in the front-rear direction of rotation of the ratchet is enlarged or reduced by the amount of eccentricity caused by the rotation of the adjusting screw to adjust the movement.

The expansion or contraction of the fixed position is realized by, for example, enlarging or reducing the amount of eccentricity caused by the rotation of the adjusting screw with the intervention of a lever, or the difference in the amount of eccentricity with respect to the rotation of the adjusting screw itself.

The smaller the chip electronic component becomes, the more severe the movement adjustment of the fixed position of the axis of the fixed claw becomes.However, in the present invention, in order to adjust the movement amount while converting the rotation amount to the movement amount in the linear direction. Also, it is possible to cope with miniaturization of chip electronic components.

Further, according to the present invention, the mounting position of the chip electronic component supply device on the mounter device is adjusted via an eccentric positioning pin on a surface mounted on the mounter device, and the eccentric amount accompanying the rotation of the positioning pin is adjusted. A fixed position of the main body with respect to the mounter device is movable. Therefore, the chip electronic component supply device can be downsized.

〔Example〕

Hereinafter, the present invention will be described with reference to an embodiment shown in FIGS. 1 to 7. FIG. 1 is an overall structural view of a chip electronic component supply device (tape hooder). 1 is a main body of the chip electronic component supply device, 2 is a carrier tape enclosing the chip electronic components, 3 is a reel around which the carrier tape 2 is wound,
4 is a guide for holding the reel, 5 is a side plate for holding the reel 3, 6 is a tape feed lever for transmitting the driving force from the mounter device, 7 is a sprocket for rotating the ratchet 8 and sending the carrier tape 2. 8A (Fig. 5)
Is a fulcrum for transmitting the driving force of the tape feed lever 6 to the lever 7. 10 is a spring for returning the tape feed lever 6 to a fixed position, 11 is a lever for winding the upper tape 23, and 12 is a spring for synchronizing the drive of the tape feed lever 6 and the lever 11. . Reference numeral 14 denotes a lever which forms a link mechanism for winding up the upper tape 23 by the driving force of the tape feed lever 6.

Reference numeral 15 denotes a lever which is coaxial with the shaft 16 of the take-up reel 20 and is driven by the lever 11, reference numeral 17 denotes a feed pawl provided on the lever 15 for rotating the ratchet 24, reference numerals 18 and 19 denote fixing pawls of the ratchet 24. It is. Reference numeral 28 denotes a mounting lever for engaging the fixing pin 22 of the tape feeder with the table 25 of the mounter device and mounting the same to the mounter device. twenty one
Indicates a guide for the carrier tape 2. Reference numeral 26 denotes a spring for applying tension to the carrier tape 2 between the carrier tape 2 and the sprocket 8A for feeding the tape 2 by bringing the carrier tape 2 into contact with the tape pressing plate 27. FIG. 2 is a front view of the take-up reel 20 for the upper tape 23, and FIG. 3 is a sectional view taken along line AA of FIG. A ratchet 24 is integrally connected to the reel 20 and the winding shaft 30. 29A is an outer cover, 29B is an inner cover, and the upper tape 23 is wound around the outer periphery of the winding shaft 30.

Next, the operation will be described. The carrier tape 2 wound on the reel 3 is wound around a sprocket 8A connected to the ratchet 8 through the guide 21, and sent out of the tape guide 32 by the rotation of the ratchet 8. The upper tape 23 is peeled off at the tip 33 of the tape holding plate 27,
It is wound on a take-up reel 20. The chip electronic component 1A is opened at the leading end 33 of the tape holding plate 27, and the suction nozzle 34 of the mounter device moves down to suck the chip electronic component 1A.

The operation of feeding the carrier tape 2 is performed by the tape feed lever 6.
Is pushed in a direction indicated by an arrow by a cam (not shown) of the mounter device, the fulcrum 9 of the tape feed lever 6 moves upward, and accordingly, the feed pawl 31a moves in synchronization with the mounted lever 7 to move upward. Feed claw 31a (Fig. 5)
Rotates the ratchet 8 and feeds a certain amount of carrier tape 2 at the same time. Further, when the tape feed lever 6 is pushed in the direction of the arrow, the lever 15 rotates around the axis 16 via the lever 11 and the lever 14, and the feed pawl 17 pushes up the ratchet 24, so that the reel 20 rotates. By repeating this operation, the upper tape 23 is peeled off at the leading end 33 of the tape pressing plate 27 and wound on the reel 20. lever
11 is restricted in the operating range by the spring set screw 13 of the tape feed lever 6. The winding force of the upper tape 23 can be adjusted by the spring 12. After being pushed by the cam of the mounter device, the tape feed lever 6 returns to the original position by using the force of the spring 10. When the tape feed lever 6 is pushed once, it moves the chip electronic component held on the carrier tape 2 by one pitch. This operation is repeated.

Here, the chip electronic components are attached to the suction nozzle of the mounter device.
If it is not accurately sent to the 34 positions, a component suction error will occur. FIG. 4 is a plan view showing a position where the chip electronic component is attracted, and 1A shows the chip electronic component. If the position of the chip electronic component 1A is displaced in the left, right, front and rear directions with respect to the position of the suction nozzle 34, it causes a suction error. The structure of the tape feeder which can absorb a deviation due to an assembly error and can be adjusted with high precision will be described with reference to FIG.

The deviation from the position of the suction nozzle 34 in the left-right direction with respect to the traveling direction of the carrier tape 2 is achieved by rotating a positioning pin having an eccentric shaft of 1B to move the entire tape feeder in the left-right direction. Adjust to the position. The cross section of the positioning pin 1B is such that the axis of the table 25 and the axis of the main body 1 are eccentric as shown in FIG.

Next, in order to adjust the stop position of the chip electronic component 1A in the front-rear direction, the stop position of the rotation angle of the ratchet 8 must be adjusted with high accuracy. Therefore, the adjusting mechanism will be described with reference to FIG. When the tape feed lever 6 is pushed in the direction of the arrow by the cam from the mounter device, the fulcrum 9 moves upward, and accordingly the feed pawl of the ratchet 8 is moved.
31a rotates the ratchet 8. When the rotation is stopped, the tip of the fixed claw 31b is accurately inserted into the tooth valley of the ratchet 8 and fixed. The position of the fixing claw 31b is the carrier tape 2
Affects the accuracy of the stop position. Therefore, chip electronic components
The structure in which the stop position can be adjusted accurately by feeding 1A is that the axis 1E of the fixed claw 31b can be moved and moved in a direction substantially equal to the tangent line of the ratchet 8 so as to be positioned.

As shown in FIG. 5, the axis 1E of the fixed claw 31b is attached and fixed to a lever 1C serving as a holding portion. The lever 1C rotates about the rotation shaft 1D as a fulcrum, and is fixed to the main body 1 by an adjusting screw 1F. FIG. 6 shows a cross section of the adjusting screw 1F. Here, the adjusting screw 1F has an eccentric structure and is provided between the rotation axis 1D of the lever 1C and the axis 1E of the fixed claw 31b, so that the length between the rotation axis 1D and the axis 1E of the lever 1C and the rotation axis 1D The position of the rotary shaft 1E can be moved by the ratio of the length between the adjusting screw 1F and the eccentricity of the adjusting screw 1F or more, and accordingly, the engaging portion between the fixed claw 31b and the ratchet 8 is moved in the direction of the arrow. Thus, the stop position of the ratchet 8 can be adjusted. The amount of adjustment of the stop position of the ratchet 8 is only required to be adjusted by a small amount that is equal to or less than the distance between the chip electronic components 1A held on the carrier tape 2. Therefore, turning the adjustment screw 1F fixes the lever 1C at the optimum position. be able to.

According to the present embodiment, the stop position of the chip electronic component 1A can be adjusted by turning the positioning pin 1B and the adjustment screw 1F.
Easy adjustment to 34 component suction positions, chip electronic component 1A
Adsorption mistakes can be prevented.

The positioning means in the left-right direction of the chip electronic component 1A is an eccentric positioning pin 1B, and the positioning means in the front-rear direction is an eccentric adjusting screw 1F, so that the structure is simple, high in reliability, and can be downsized.

In the above embodiment, the axis 1E of the fixed claw 31b is fixed to the lever 1C in order to widen the adjustment range of the stop position of the ratchet 8, but the axis 1E of the fixed claw 31b is directly fixed to the main body with the adjustment screw 1F. May be used. By turning the adjustment screw 1F, the position where the fixed claw 31b and the ratchet 8 are engaged can be moved according to the amount of eccentricity of the adjustment screw 1F. For the small chip electronic component 1A, the interval at which the chip electronic component 1A of the carrier tape 2 is held is small, and the stop position of the ratchet 8 can be adjusted by the amount of eccentricity of the adjustment screw 1F. According to this embodiment, the structure can be further simplified.

〔The invention's effect〕

According to the present invention, in a device for adjusting a supply position of a chip electronic component, in order to adjust a fixed position of an axis of a fixed claw while converting a rotation amount to a linear movement amount, a chip electronic component of a mounter device is used. It is possible to obtain a chip electronic component supply device which is small in size, has reduced suction errors, has high reliability, and can sufficiently cope with miniaturization of electronic components.

[Brief description of the drawings]

FIG. 1 is an overall structural view of a chip electronic component supply device according to one embodiment of the present invention, FIG. 2 is a front view of an upper tape take-up reel unit, and FIG. 3 is a longitudinal sectional view of the reel unit. FIG. 4 is a plan view of a chip electronic component suction position, FIG. 5 is a partial detailed view of a mechanism for adjusting a stop position of the chip electronic component of the chip electronic component suction device, and FIG. 6 is AA in FIG. The cross section of the adjusting screw is shown in a sectional view taken in the direction of the arrow. FIG. 7 is a sectional view taken along the line BB of FIG. 5 and shows a section of the positioning pin. 1 ... body, 2 ... carrier tape, 3 ... reel, 4
... Guide guide, 5 ... Side plate, 6 ... Tape feed lever, 7 ... Lever, 8 ... Ratchet, 9 ... Support point, 10
…… Spring, 11 …… Lever, 12 …… Spring, 14 …… Lever,
17: Feeding jaw, 18, 19: Fixed jaw, 21: Tape guide, 22: Pin, 1A: Chip electronic component, 1B: Positioning pin, 1C: Lever, 1F: Adjusting screw

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 13/02 B65H 20/22 B65G 47/91 F16H 31/00

Claims (2)

(57) [Claims] A chip electronic component supply device for intermittently supplying a chip electronic component held on a carrier tape by a sprocket connected to the ratchet, wherein the ratchet is intermittently rotated by a feed claw by a driving force obtained from a mounter device. In (2), the axis of the fixed claw that prevents the ratchet from reversing is fixed to the main body of the chip electronic component supply device via an eccentric adjustment screw, and the eccentric amount accompanying the rotation of the adjustment screw is substantially equal to the tangent line of the ratchet. A chip electronic component supply device, wherein a fixed position of an axis of the fixed claw with respect to the main body in a direction is movable. 2. The chip electronic component supply device according to claim 1, wherein a main body of said chip electronic component supply device is fixed via a positioning pin eccentric to a surface to be mounted on said mounter device. The chip electronic component supply device, wherein a fixed position of the main body with respect to the mounter device can be moved by the accompanying eccentric amount.