JPH01308343A - Sizing take-up roller for tape - Google Patents

Abstract

PURPOSE:To supply parts in a stable manner by turning a wheel, winding a top tape of tip type electronic parts subjected to taping, with linkage of each two-set of levers and springs, while braking it with a brake lever. CONSTITUTION:A top tape 3 is wound on a take-up wheel 4 from a carrier tape 2 of tip type electronic parts 1, and each of these parts 1 is fed to a tip mounter (TM). A first lever 6 and a chevron-form second lever 9 are rotatably attached concentrically to the wheel 4. If the second lever 9 is pressed by force in a arrow A direction from a tip mounter body, the first lever 6 is jumped up in a C direction, and when it is restored to its original position by a spring 8, the wheel 4 is rotated in a D direction by a ratchet 5 and a claw 7. When the second lever 9 is returned to an origin B by force of a spring 11, a brake bar 12 is rotated around a fulcrum 13, thereby braking the wheel 4. When the second lever 9 is not in the B point, this braking is released. With this constitution, any cut of the top tape is kept back, so that a stable supply of the parts is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fixed-size tape winding device for an electronic component supply unit, which is used as a device for mounting chip-type electronic components onto a board in an electronic circuit board assembly process.

BACKGROUND OF THE INVENTION In recent years, the proportion of electronic circuits formed using chip-type electronic components has been increasing. As a result, automatic mounting machines (chip mounters) for chip-type electronic components have been developed, and various types are now in use on the market. Additionally, there are various types of electronic component supply units (parts cassettes) that supply chip-type electronic components that are becoming increasingly smaller, and they play an important role in chip mounters.

Hereinafter, an example of the above-mentioned conventional parts cassette tape winding device will be described with reference to the drawings.

FIG. 2 shows an example of a state in which a chip-type electronic component is taped. In FIG. 2, 1 is a chip-type electronic component (resistor, capacitor, etc.), and 2 is a carrier tape, which houses the chip-type electronic component 1. 3 is the top tape,
The upper surface of the carrier tape 2 containing the chip-type electronic component 1 is covered and bonded.

FIG. 3 is an example showing a tape winding section of a parts cassette that winds up the top tape 3 explained in FIG. 2.

In FIG. 3, numeral 1 is a chip type electronic component which is taped. 2 is a carrier tape, and 3 is a top tape. 4 is a winding wheel, which has a ratchet 5.

Reference numeral 6 denotes a first lever, which is attached coaxially with the winding wheel 4, has a pawl 7, and is attached to the ratchet 5 of the winding wheel 4.
and rotate it. A first spring 8 biases the first lever 6 so as to pull it. Reference numeral 9 denotes a second lever, which is shaped like a "h" and receives a driving force from the chip mounter body in the six directions of arrows at one end thereof, and swings about a fulcrum lO. Reference numeral 11 denotes a second spring, which is attached to the other end of the second lever 9, and is biased to return to the home position B when the driving force from the chip mounter body does not act on one end of the second lever as described above. ing.

Further, the second lever 9 is adapted to flip up the first lever 6, which is attached to the same fulcrum, in the rotational direction of arrow C during the swinging motion. When the first lever 6 is flipped up and returned to its original position by the first spring 8, the engagement of the ratchet 5 and pawl 7 causes the winding wheel 4 to rotate in the direction of the arrow.

The top tape 3 is wound up by the rotation of the winding wheel 4. Note that as the top tape 3 is wound up, the center diameter of the winding wheel increases;
Since the first lever 6 swings by the amount of slack and stops,
A constant winding amount is always achieved.

Problems to be Solved by the Invention However, in the above configuration, unnecessary winding force continues to act on the top tape 3 even after the winding amount of a fixed size is completed. Further, there is a problem in that this winding force has an adverse effect on the carrier tape 2, which requires highly accurate positioning.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a tape sizing winding device for an electronic component supply unit that enables stable supply of chip-type electronic components in a high-speed mounting machine.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a winding wheel for winding the top tape of a taped chip-type electronic component, and a first winding wheel that is engaged to rotate the winding wheel. a lever; a second lever that receives a driving force from the electronic component mounting machine main body and swings up the first lever; a first spring that is attached to the first lever and generates a winding force; A tape sizing winding device comprising: a second spring that is attached to a lever and applies a force to return the lever to its original position; and a brake lever that applies a brake to a winding wheel in conjunction with the second lever. And so.

Operation As described above, the present invention is provided with a brake lever that applies a brake to the winding wheel in conjunction with the second lever, so that after winding of a fixed size is completed, a brake function is provided to cancel the winding force. This eliminates the trouble of top tape breakage and lower carrier tape positioning accuracy. Therefore, it is possible to realize a stable supply of chip-type electronic components using a high-speed placement machine.
This improves the cost reduction and high quality of electronic circuit board formation.

Embodiments Hereinafter, the drawings shown as embodiments of the present invention will be explained.

In FIG. 1, numerals 1 to 11 are the same as those shown in the conventional example. I2 is a brake lever, which is rotatably supported on a fulcrum 13. This brake lever 12 acts on the winding wheel 4 to apply a brake when the second lever 9 reaches the origin position B.

Further, a torsion spring is attached to the fulcrum 13 of the brake lever 12, and when the second lever 9 is not at the home position fiB, it does not come into contact with the winding wheel 4, so no braking action is performed.

As described above, according to this embodiment, by providing the brake lever 12 that interlocks with the second lever 9 at its original position,
Unnecessary winding force can be eliminated.

Effects of the Invention As described above, the present invention converts the rotational force of the winding wheel into a second
By providing a brake lever that is released at the lever's home position, no tensile force is applied to the top tape after winding of the top tape is completed, which prevents the top tape from breaking and adversely affecting the positioning accuracy of the carrier tape. In chip-type electronic component mounting machines,
This has led to the realization of a stable supply of electronic components. Therefore, there is an effect of improving cost reduction and high quality of circuit board formation.

[Brief explanation of the drawing]

Fig. 1 is a side view of a tape winding device showing an embodiment of the present invention, Fig. 2 is a perspective view of a taped chip type electronic component, and Fig. 3 is a side view of a conventional tape winding device. . 1... Chip type electronic component 3... Top tape 4
... Winding wheel 6 ... First lever 8 ... First spring 9 ... Second
Lever 11...Second spring 12...Brake lever

Claims (1)

[Claims] (1) A take-up wheel that winds the top tape of the taped chip-type electronic component, a first lever engaged to rotate the take-up wheel, and a first lever that receives driving force from the electronic component mounting machine main body; a second lever that swings by flipping up the first lever; a first spring that is attached to the first lever and generates a winding force; and a second spring that is attached to the second lever that generates a force to return the lever to its home position. 2 springs and
A sizing tape winding device comprising: a brake lever that applies a brake to a winding wheel in conjunction with the second lever;