JP2645983B2 - Tape chip collecting device for belt loop sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is characterized in that chips generated when a long tape for forming a belt loop (hereinafter simply referred to as "tape") in a belt loop sewing machine are cut are reliably collected. And a chip collecting device in a belt loop sewing machine.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 and 5, a chip collecting box for a sewing machine exclusively for belt loop sewing is provided below a cutting mechanism 17 for cutting a tape M provided at a front end of a tape delivery table 15. By providing the tape 30, the tape M sent from the tape feeding table 15 can be used to cut the tape M
As shown in FIG. 3, when cross-shaped and cut as shown in FIG.
Triangular chips R dropped from the cut portion of the tape M
And L are collected in the waste bin 30.

[0003]

In this conventional chip collecting method, a part of the triangular chip pieces R and L generated from the cut tape does not fall into the chip box 30 and the cutting is performed. It scattered in both directions of the mechanism 17 and fell on the sewing board 26 of the sewing machine and the sewing machine table 27. Therefore, the chips that did not fall into the waste bin 30 had to be swept up after the work was completed.

Further, as shown in FIGS. 4 and 5, the receiving port 31 of the dust box 30 is extended to a position immediately below the sewing machine bed 25 in order to reliably collect the falling chips R and L. When the operator performs the belt loop sewing operation toward the sewing machine, a part of the lower body (foot, knee, etc.) of the operator touches the outside of the waste box 30 and is in the way.

[0005]

SUMMARY OF THE INVENTION The present invention has solved the above-mentioned problems, and does not take any means for receiving the chips of the tape dropped from the conventional tape cutting mechanism 17 in the chip storage box 30. The generated chips are blown down to the funnel 5 by the air blowing nozzles 2 and 4, and the blown chips are guided to and collected at an arbitrary position by the bellows hose 10 connected to the funnel 5 and a rear part thereof. Is what you do.

That is, in the present invention, a tape delivery table 15 provided with a long tape cutting mechanism 17 is provided above the side of the sewing machine bed 25, and the tape chips are left and right above and behind the cutting mechanism 17. Air blowing nozzles 2 and 4 that blow down to the right are provided, while below the cutting mechanism 17,
A funnel 5 is provided in which the left and right guide plates 6 and 7 are raised and protruded to both sides of the cutting mechanism 17, and a bellows hose 10 is provided below the funnel 5 so as to extend rearward. The chips from the tape blown down by the nozzles 2 and 4 into the funnel 5
A tape chip collecting device for a belt loop sewing machine, wherein the tape cutting device is guided to a position below a rear portion of the tape feeding table 15 which does not hinder an operator via a bellows hose.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the present invention includes a pair of upper and lower horizontally rotatable 55-degree pivots at the front end of a tape feeding table 15 having rollers 16 for feeding a tape M to front receiving plates 21 and 21. A tape cutting mechanism 17 having a fixed blade 18 and a movable blade 19 is provided. An air pipe 1 is provided vertically at the upper left front of the cutting mechanism 17, and an air blowing nozzle 2 of the air pipe 1 is shown in FIG. As shown in the drawing, when the fixed blade 18 is turned rightward, the compressed air is blown in a direction indicated by an arrow A substantially in front of the fixed blade 18 and substantially toward the right half of the tape M.

Therefore, the movable blade 19 is lowered by the action of the compressed air blown out from the air blowing nozzle 2 to move the chip R on the right side of the tape cut into an X shape outward to the right side of the fixed blade 18. I try to blow it down.

Also, at the upper left rear of the cutting mechanism 17,
An air pipe 3 is provided vertically, and an air blowing nozzle 4 of the air pipe 3 has a fixed blade 1 as shown in FIG.
When the right side of the movable blade 19 is directed to the right side, the movable blade 19 is provided so as to blow out the compressed air in a direction perpendicular to the left edge of the movable blade 19 and in a direction indicated by an arrow B toward the center of the tape M. Therefore,
By the action of the compressed air blown out from the air blowing nozzle 4 and repelling against the movable blade 19, the chip L on the left side of the tape cut in the X shape is blown off to the left outside of the fixed blade 18.

In addition, below the cutting mechanism 17, FIG.
As shown in FIG. 2, a box-shaped funnel 5 for receiving the chip pieces R and L of the tape is provided, and the funnel 5 has guide plates 6 and 7 protruding in the right and left upper portions in a rising shape. When fixed to the lower end of the delivery table 15, the left and right guide plates 6 and 7 are in a state of projecting to both sides of the cutting mechanism 17.

Accordingly, as shown in FIG. 3, the tape chips R and L cut in an X-shape by the horizontal rotation of the pair of upper and lower fixed blades 18 and the movable blade 19 of the cutting mechanism 17 form the air. When the fixed blade 18 is blown down to the right and left sides by the action of the compressed air pressure blown out from the blowout nozzles 2 and 4, the chip pieces R and L strike the overhanging left and right guide plates 6 and 7. This ensures that the funnel 5 falls into the funnel 5. As shown in FIG. 2, the rear end of the lower end of the funnel 5 is formed in a pipe shape.

A bellows hose 10 is connected to a pipe-shaped portion formed at the rear of the lower end of the funnel 5,
As shown in FIG. 1, the bellows hose 10 is bent downwardly at the rear of the tape delivery table 15 and its lower end is connected to the suction port of the venturi tube 11 fixed to the lower surface of the sewing machine table 27 via the bracket 14. Have been.

Further, a bellows hose 12 is connected to an exhaust port of the venturi tube 11, and a lower end of the hose 12 is connected to a dust box 13 provided in a leg 28 of a sewing machine table 27.

The operation of each mechanism in the embodiment of the present invention is performed by driving a pulse motor and a pneumatic cylinder, and the operation sequence is controlled by microcomputer control or sequence control.

[0015]

As shown in FIG. 1, when the tape M is sent out from the tape feed base 15 to the tape receiving plates 21 and 21 arranged in front of the tape feed base 15 by the drive of the feed roller 16, the movable blade 19 is lowered. Cut leftward as indicated by the two-dot chain line in FIG. Next, after the movable blade 19 is raised, the movable blade 19 is horizontally turned about 55 degrees in the counterclockwise direction together with the fixed blade 18.

Then, compressed air is blown toward the movable blade 19 and the fixed blade 18 from the air blowing nozzles 2 and 4 provided on the left front and the left rear of the cutting mechanism 17, and is provided on the lower surface of the sewing machine table 27 at the same time. The venturi tube 11 thus started starts the suction operation.

Next, the movable blade 19 is lowered again and cuts rightward as shown by the solid line in FIG. At this time, in the triangular chip pieces R and L generated in the cut portion of the tape M, the right chip piece R is caused by the action of compressed air blown from the air blowing nozzle 2 provided on the left front of the cutting mechanism 17. It is blown down to the right side of the fixed blade 18 and then hits the guide plate 6 which protrudes to the upper right side of the funnel 5, while the chip pieces L on the left side are air blowouts provided on the left rear side of the cutting mechanism 17. The compressed air blown out from the nozzle 4 blows down the left side of the fixed blade 18 and then falls into the funnel 5 by hitting the guide plate 7 projecting to the upper left side of the funnel 5. .

When the triangular chip pieces R and L fall into the funnel 5, the chip pieces R and L are sucked by the venturi tube 11 provided on the lower surface of the sewing machine table 27.
Is sucked into the bellows hose 10. Thereafter, the chip pieces pass through the venturi tube 11 and the bellows hose 12 and enter the dust box 13 connected to the lower end of the bellows hose 12.

In the following, when the tape M is cut, the above-described chip suction operation is automatically repeated each time the chip pieces R and L of the tape are generated.

[0020]

According to the present invention, when cutting the tape M, the generated chip pieces are blown down to the right and left sides of the fixed blade 18 by the action of compressed air blown from the air blowing nozzles 2 and 4, and By hitting both guide plates 6 and 7 on the upper part of the funnel 5 projecting on both sides of the fixed blade 18, it is ensured that the funnel 5 is dropped into the funnel 5. Board 2
6 and the sewing machine table 27, and there is no need to sweep and collect the chips after the belt loop sewing operation.

Further, according to the present invention, the chip pieces of the tape are
The chip is reliably dropped into the box-shaped funnel 5 provided below the cutting mechanism 17, and the chip pieces are passed through the bellows hose 10 from the pipe at the lower rear portion of the funnel 5 to the tape delivery table 15 which does not hinder the worker. Guide to the lower rear position,
After that, since the dust is collected directly in the dust box 13 provided in the leg 28 of the sewing machine table 27,
When the operator performs the belt loop sewing operation toward the sewing machine bed 25, a part of the lower body (foot, knee, etc.) of the operator touches the outside of the waste box 30 as in the related art, and is in the way. There is no one.

[Brief description of the drawings]

FIG. 1 is a left side view of a state in which a chip collecting device of the present invention is provided on a sewing machine.

FIG. 2 is a perspective view of a main part of the chip collecting device of the present invention.

FIG. 3 is a plan view of a main part of the chip collecting device of the present invention.

FIG. 4 is a perspective view showing a conventional chip collecting state.

FIG. 5 is a front view showing a conventional chip collecting state.

[Explanation of symbols]

 2 air blowing nozzle 4 air blowing nozzle 5 funnel 6 guide plate 7 guide plate 10 bellows hose 15 tape feeder 17 cutting mechanism 25 sewing machine bed

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-1-284285 (JP, A) JP-A-4-108080 (JP, U) JP-A-1-160975 (JP, U) JP-A-1 164976 (JP, U) Jpn.

Claims (1)

(57) [Claims] 1. A tape delivery table 15 having a long tape cutting mechanism 17 is provided above a side portion of a sewing machine bed 25. Chips of the tape are left and right above and behind the cutting mechanism 17. Air blow nozzles 2 and 4 to blow down are provided, while a funnel 5 is provided below the cutting mechanism 17 by raising and projecting left and right guide plates 6 and 7 to both sides of the cutting mechanism 17. 5, a bellows hose 10 is provided to extend to the rear, and a cutting mechanism 17 is provided.
From the funnel 5 through a bellows hose to the tape feeder table 1 which cuts off the chips of the tape blown down to the funnel 5 by the air blowing nozzles 2 and 4 from the funnel 5.
5. A tape chip collecting device for a belt loop sewing machine, wherein the chip is collected at a position below a rear portion of the sewing machine.