JPS6156892A - Cutter - 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] Industrial applications The present invention relates to a cutter for cutting thread 2, paper, cloth, etc.

BACKGROUND OF THE INVENTION For example, in textile machines, cutters for cutting yarn are generally made of iron-based metal materials.

Problems to be Solved by the Invention The power of the above-mentioned iron-based metals cannot be avoided due to long-term use, wear of the cutting edge, corrosion due to rust, etc., and periodic replacement of parts or lubrication is necessary. There is a need to do. Also,
Synthetic fibers, such as polyester fibers, are mixed with conductive fine powder to dissipate static electricity, or are mixed with fine titanium oxide powder to make them matte. Conventional iron-based metals have short lifespans and cannot prevent uncut errors due to wear.

The present invention aims to solve the various problems mentioned above.

A foolproof way to solve a problem In the present invention, the cutting edge is made of ceramics.

Embodiments FIGS. 1 to 7 show examples in which the present invention is applied to a shutter cutter for an automatic winder.

FIG. 6 shows a schematic configuration of the automatic wine goo. A shaft or pipe (2) and a suction pipe (3) are installed between each side frame (1), and a winding unit y
) (4) is rotatably supported on the shaft (2), and during automatic wine goo operation, the unit (4) is also placed on the pipe (3) and fixed as appropriate. Note that the pipe (3) is connected to a blower (not shown), and a suction air current is constantly applied thereto.

The rewinding of the yarn from the spinning bobbin (B) to the package CP) in the winding unit (4) involves the rewinding of the yarn (Yl) from the bobbin (B) on the bed (5) to the guide (
After passing through 6), apply appropriate tension to the thread with tensor (7),
After passing through a detection device (8) that also detects and cuts yarn unevenness such as slabs and detects yarn running, the yarn is wound onto a package (P) rotated by a quilling/ding drum (9).

At this time, when the detection device (8) detects yarn unevenness in the yarn, a canter installed near the detection device (8) is activated to cut the running yarn (Yl) and stop one winding. Meanwhile, the yarn guiding relay pipe (10) is activated.

The thread (YE) on the bobbin (B) side is carried by another thread guide arm (11), and the thread (yp) on the package (P) side is carried by another thread guide arm (11).
is guided to a yarn splicing device (12) installed at a position away from the normal yarn running path (Yl), and after splicing is performed by the yarn splicing device (12), rewinding of the yarn is resumed.

Also, since fluid such as compressed air is used in the yarn splicing device, a conduit (
14) is connected, and compressed fluid is supplied from the pipe (13).

As shown in FIG. 7, the winding unit (4) includes a suction duct (18), a driving shaft (19), cams (20), (21), (22), and the like. A suction mouth (11) and a relay pipe (10) are connected to the suction duct (18) via hollow shafts (16) and (17), respectively, and the suction duct (18) is connected to the suction pipe (3). ) is provided with a shutter cutter (23) communicating with the shutter cutter (23).

The shutter cutter (23) to which the present invention is applied is
It is shown in Figure 5. In Figure 3.4, the shutter cutter (
The end of the flange (23&) forms a flange-like part (23&), and the groove (23b) provided in the flange-like part (23a) has an elastic annular force, a tar guide (23&) made of a material such as nylon, for example. 24) is fixed. Movable blade (25
) and the fixed blade (26) are provided facing each other, and the perforation (25a) provided in the movable blade (25) and the fixed blade (26)
The perforation (26a) provided in ) is inserted into the bush (28) fixed to the bottle (27), and the hole (26a) is
Due to the urging force of the spring (31) interposed between the retaining ring (29) at the tip and the washer (3), the movable blade (25) and the fixed blade (26) are moved between the base (28a) of the bush (28) and the washer (3). It is sandwiched between the two to ensure more secure contact between the two.

On the other hand, a hole (25b) bored at the end of the movable blade (25)
The pin (33) installed on the crankshaft (32) is inserted through the blade, and as the crankshaft (32) rotates, the movable blade (25) swings around the pin (27) as a fulcrum. It is configured like this.

The shutter force, the flannel part 2 (23a) of the tar (23)
), the force fixed in the groove (23b) of the tar guide (24
) is in contact with the back surface of the movable blade (25), that is, the surface opposite to the contact surface with the fixed blade (26), and the fixed blade (26)
The tip of the spring (35) inserted into the slot (34)
), a pressing force is applied by the urging force of the movable blade (25).
This allows the fixed blade (26) to come into even tighter contact with the blade.

Therefore, when the thread (Y) is being wound, the movable blade (25) is closed, the airflow flowing in the direction of the arrow (36) in FIG. 3 is blocked, and the suction mouth (11) and The space between the relay pipe (1) and the suction pipe (3) is closed, but even if air pressure is applied to the movable blade (25), the annular cutter guide (24), spring (31), ( The movable blade (25) and the fixed blade (26) are brought into close contact with each other by the urging force of the shutter cutter (23) and the movable blade (25) by the cutter guide (24). The back side is also airtight, creating a shutter cutter with no air leaks.

In addition, the movable blade (25) and the fixed blade (2) are made of fine ceramic, wood, e.g. zirconia (ZrO2).
A cutting edge piece (37) composed of a sintered body whose main component is
38) is removably fixed. That is, as shown in Figure 1.2, the movable blade (25) and the fixed blade (26)
) is provided with a cutting groove (39) for fixing the cutting edge piece on a part of the opposing side (
4 were formed, and the kerfs (3) were fixed on the surfaces (39a) and (40a) with the blade edge piece mounting surface (39a) (40a) tilted θ. Blade tip piece (37)
The blade edge (37a) (3sa) of (38) is in close contact with each other to ensure thread cutting. The cutting edge pieces (37) and (38) have a trapezoidal cross section perpendicular to the longitudinal direction as shown in Fig. 2, and the short side of the trapezoid has an inclined mounting surface (39a).
) (40a) and fixed with screws (41), (42), etc. That is, by forming the trapezoidal shape, if one of the cutting edge edges (37a) is damaged or worn, the screw (4
If 1) is removed and the blade edge piece (37a) is reversed so that the longitudinal direction is reversed and installed, a new blade edge (37b) can be used, and one blade edge piece can be used twice. Furthermore, as shown in FIG.
5) Seat hole (25C) on the fixed blade side of the shaft through hole (25b)
, and the bottom surface (25d) has an angle (el) cutting edge piece (37
) side>1 and the seat hole (25C)
Insert the cylindrical push-piece (43) into the bush (
The structure is such that the movable blade (25) and the fixed blade (26) are in close contact with each other with 43) in the middle. That is, when the movable blade (25) is turned toward the fixed blade side, that is, when it is closed, the angle (e
l) The movable blade (25) is pressed against the fixed blade (26), and when the movable blade (25) and the fixed blade (26) open, there is a slight margin between the movable blade (25) and the fixed blade (2), which acts to reduce the frictional force. It is something to do.

For example, the above-mentioned sintered zirconia (ZrO2) may be used as the ceramic or the base that constitutes the blade edge pieces (37) (38).
, alumina (A1203), oxide ceramics such as sintered titania (TiO), or composite oxide ceramics such as alumina zirconia (AI!2o3-Zr02) are applicable, but the cutter for thread cutting and folding described above is applicable. Sintered zirconia (ZrO2), which has a strong fφ, high hardness, and can be used for a long period of time without lubrication, is preferred, as is alumina zirconia (Az 203=Zr02).

For example, the above zirconia (ZrO2) has a porosity of 0.3%.
, hardness (Hv): 1200HV, bending strength: 100kg
/rwn2, thermal conductivity 0.004 Ca67cm, s
ee, oc and insulation are also dogs.

In addition, oxide-based ceramics such as the above-mentioned zirconia.

However, non-oxide ceramics such as silicon carbide (S
iC), silicon nitride (313N4), boron nitride (BN
) etc. are also applicable.

Figure 8.9 shows the yarn splicing device shown in Japanese Patent Application Laid-open No. 57-81068, which is installed in the automatic winder (Oka) shown in Figure 6. Cutter (50a) that cuts the yarn end at a fixed position
(50b) are provided on both sides of the yarn splicing member (51)), and the cutting edges (54) and (55) of the fixed blade (52) and movable blade (53) that constitute the cutters (50a) and (50b) are also provided. Like the gloss cutter (23), it is made of a ceramic material such as zirconia.

That is, the yarn end (YP) (YB) guided to the vicinity of the yarn splicing member (51) by the relay pipe (1) and the connecting mouth (11) shown in FIG.
) (57), and then a pair of upper and lower thread shifting levers (58) and (59) rotate to release one thread (
yp) are guide grooves (60) (61) thread joining holes (62),
The other yarn (YB) is inserted into the guide grooves (63) (64) and the yarn splicing hole (62).The movable blade (53) of the sob operates to cut each yarn end, and the untwisting nozzle (65) (Each yarn end is suctioned and untwisted into the yarn pulling lever (58).
(59), the untwisted yarn ends are pulled out by the operation of the yarn presser lever (67), and are set so as to be overlapped in the yarn joining hole (62). In this state, the yarn splicing is performed by the action of the compressed air flow injected into the yarn splicing hole (62).

In such a yarn splicing device, the quality of cutting the yarn end has a great effect on the strength and appearance of the seam formed, and in order to maintain stable sharpness over a long period of time, the above-mentioned ceramic,
A cutter with a cutting edge made of wood is extremely effective in terms of wear resistance and no need for lubrication.

Effects of the Invention As described above, in the present invention, the cutting edge of the cutter made of thread, cloth, paper, etc. is made of a thin wire, so the lifespan is greatly extended compared to the conventional cutter made of iron-based metal materials. It is maintenance-free and does not allow rust, oil, etc. to adhere to the material to be cut.

P 1. A plan view showing the movable blade and fixed blade of the Shanotar force, which is the first embodiment of Fugenmei. Figure 2 is a front view of the same, and Figure 3.
The figure is a cross-sectional side view of the shutter cutter, Figure 4 is a view from the right side of Figure 3, Figure 5 is a partial cross-sectional front view showing the installation status of the movable blade and fixed blade, and Figure 6 is the shutter cutter. 7 is a diagram showing the mounting position of the shutter cutter, and FIG. 8 is a schematic front view of the construction of a yarn splicing device showing another embodiment to which the present invention is applied. FIG. 9 is a plan view of the same.

(25) (53)...Movable blade (26) (54)...Fixed blade (37) (38), (54) (55)...Ceramic cutting edge piece 5th decoy 26' 25b $ 1 Figure 3rd ward

Claims (1)

[Claims] A cutter characterized by a cutting edge made of ceramics.