JPS58127681A - Electromotive yarn picking apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electric thread picking device that automatically picks up remaining threads formed at the beginning and end of sewing of sewn products such as clothing.

A serrated cover is provided opposite the fixed blade of the serrated thread removal blade, which is composed of an electric hair clipper type fixed blade and a movable blade,
A device that picks up remaining threads standing on the fabric surface by suctioning from the gap between the fixed blade and the cover is disclosed in the patent application filed in 1973 by the present inventor. This was proposed in No. 15-50911. The thread-picking device was not suitable if it was simply a repurposed clipper, but after various improvements, it was possible to make it suitable for use on the bottom side. The main points of improvement are that a similar serrated cover is used opposite the fixed blade of an electric hair clipper, and the tip of the serrated bar is made at an acute angle and slightly curved inward, and the sliding between the fixed blade and movable blade is improved. The main features include supplying lubricating oil to the moving parts to prevent the blade from seizing, and appropriately adjusting the gap between the fixed blade and the serrated cover and the suction force.

However, subsequent studies revealed that the residual thread cutting quality of this device was significantly affected by the shape of the tip of the lower blade, that is, the fixed blade, the shape of the tip of the serrated cover, the gap between them, and the oiling performance. It has come to this.

The configuration and effects of the present invention will be explained in detail below with reference to the drawings.

Figure 1 is a bottom view of the device, Figure 2 is a side view, and Figure 3 is a bottom view of the device.
The figure is an internal abbreviated view of the section AA in FIG. 2. FIG. 4 is an enlarged sectional view of the vicinity of the fixed blade tip.

As is clear from the figure, this device is of a clipper type and uses a straight saw blade consisting of a fixed blade (1) and a movable blade (2) to pick thread. A serrated cover (3) is provided opposite the fixed blade (1), and a gap (4) between the fixed blade (1) and the serrated cover (3) is provided.
), a cylindrical wind tunnel case (7) extending from the wind tunnel (5) to the hose connection part (6) is placed over the clipper case (8).

The wind tunnel (5) and the oil supply case αO are separated by a partition plate (9) between the clipper case (8) and the wind tunnel case (7).

The basic shape of the movable blade (2) is the same as a normal hair clipper, and no special processing is required.The movable blade (2) is driven by a plastic movable blade mounting arm that vibrates from side to side at high speed using an eccentric crank (6) rotated by a motor αη. (To) and fix the fixed blade (
1) This is a shape commonly used in sliding clippers. However, in order to endure long-term use, it is necessary to increase the motor output and supply lubricating oil to the sliding surfaces of the fixed blade (1) and movable blade (2), especially the latter. If the oil supply is cut off, the blade will seize, resulting in
It is impossible to use it continuously for 0 minutes. Therefore, in this device, an oil supply case 00 is provided to continuously supply oil to the sliding surfaces 0→ of the fixed blade (1) and the movable blade (2).

As shown in Figures 2 and 3, the refueling case 00 in this case is not a plastic tube installed in parallel with the wind tunnel (5), and a guide tube αυ, which is softer than the tube of the refueling case αQ, is installed at the tip of this tube. , a method is adopted in which lubricating oil is supplied to the lubricating cloth α held in the gap between the sliding surface α→ by passing the core thread Q through the inside of the guide tube.

The fact that it is preferable that the cover facing the serrated fixed teeth is also a serrated cover is already mentioned in the proposed method. It was also disclosed that this method is even more suitable.

However, in subsequent studies, it was found that the standing of the remaining threads was slightly uneven, and as a result of various studies, it was found that the tip of the fixed blade (1) was also inward in the same way as the tip of the serrated cover (3). It was discovered that complete standing can be achieved by making the curved surface zero.

Curved surface Q8) The pattern H is shown in the enlarged view of the tip of the fixed blade in FIG. It is preferable that the tip of the fixed blade of the clipper be flat so that the tip lies on the bottom surface of the fixed blade (1), but in the case of the present invention, the tip must be curved inward and warped. There is a significant difference in the difficulty in picking and removing the remaining threads. The number of teeth of the serrated cover (3) or the fixed blade (1) varies slightly depending on the thickness of the remaining thread, and for the remaining thread of thick fabrics with a large thread thickness, it is 36 mm wide and 11 mm wide.
The appropriate size is 36 ayg if the thread is thin.
It would be more efficient to increase the number of sheets (width per) to 17 sheets. Therefore, in the case of both thick and thin materials, an intermediate number of sheets, about 13, is appropriate.

The clipper-type electric thread picking device improved as described above can be used at the beginning and end of sewing, such as when performing upper knot stitches, etc. using 5 threads with 3 threads or 6 threads with 4 threads. Even if there are many remaining threads attached to the fabric, all of them will immediately stand up and be sucked up, making it possible to pick the threads instantly. For example, when shorts are used as a thread-picking sample, 6 threads are used for the waistband, so a total of 12 remaining threads are tangled in the overlapping part of the sewing start and sewing ends, and the fabric is wrapped around the waist. On both sides of the hem, a triangular rubber knitted belt is sewn with 8 threads each on the top and bottom, and a total of 16 threads on the left and right sides, with a large number of unsightly threads remaining at each sewing edge. Reveal. If such shorts were sewn by hand in the conventional manner using thread clipping scissors, even an experienced person would only be able to process 50 shorts per hour, but with this machine, only 50 shorts can be processed per hour. The thread picking is completed in just 4 to 5 minutes, and the finished product is extremely good. In addition, in this device, if the curved surface of the fixed blade tip (10
The fact that the workpiece did not stand up 0% was a cause of decreased work efficiency and poor finish quality. In addition, with this device, oiling the thread-picking blade is an absolute requirement, and the installation of the oiling device makes it possible to work for long periods of time.It also prevents the scattering of cotton waste into the air, which tends to occur during thread-picking work. Improvements to this device have resulted in many excellent effects, including the ability to create a cleaner work environment.

[Brief explanation of drawings]

FIG. 1 is a bottom view of the device, FIG. 2 is a side view, and FIG. 3 is an internal omitted cross-sectional view taken along line A--A in FIG. FIG. 4 is an enlarged view of the vicinity of the tip of the fixed blade. (1) Fixed blade (2) Movable blade (3) Serrated cover (4) Gap (5) Wind tunnel <11 Oil supply case θ
Guide tube αe Oil supply cloth of oil supply core thread α
α8), (IQ curved hematuria Upper applicant Matsuki Clothing Co., Ltd. agent Patent attorney Hiromibe Mori 7- Figure 1 507- No. 30

Claims (1)

[Claims] 1 Consists of a linear serrated thread-picking blade consisting of a fixed blade and a movable blade, a serrated cover facing the thread-picking blade, and an air suction unit that sucks air into the interior from the gap between the cover and the thread-picking blade. The device is characterized in that the serrated tips of the fixed blade and the cover that face each other are curved inward, and a lubricating case is provided for continuously lubricating the sliding surfaces of the fixed blade and the movable blade. Device.