JPH0559656A - Tufting machine and knife - Google Patents

Abstract

PURPOSE:To surely form cut pile without causing miss cut shearing both upper and lower piled-based loops by cooperation of both a top and a bottom knives independently acting without interference and both a top and a bottom pile engaging levers. CONSTITUTION:At a knife part in a tufting machine for planting upper and lower piles, a protruded part of a knife 14 for flat board-like upper stage is set a knife 44 for a flat board-like lower stage, a gap between an edge of a knife tip 51 of the knife 44 for lower stage and a side of the knife 14 for upper stage is formed, and a knife tip 21 of the knife 14 for upper stage is superimposed on the top of the knife tip 51 of the knife 44 for lower stage in a state of that the knife tip of the knife for upper stage is projected from the knife tip of the knife for lower stage, and both the knife tips 21 and 51 are fitted to a knife block 66 so that both the knife tips are brought into contact with sides of both pile engaging levers 19 and 49. Both the knives 14 and 44 surely cut a pile-based loop 12 engaged with the upper pile latching lever 19 and a pile-based loop 42 engaged with the lower pile pile latching lever 49 in cooperation of loopers 11 and 41 without causing miscutting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pile thread loop 12.4 which is inserted into a base cloth 68 by a single needle 69.
2 Pile locking rods 19 that are received by hooking ...
・ 49 ………… is attached in a vertical multi-stage, and the pile thread loops 12 ・ 42 are changed by changing the tension of the pile thread 67 following the pile thread loops 12 ・ 42 …….
...... Supply amount (length) is changed (US Pat. No. 3,138,812)
6) Or, those pile locking rods 19 and 49 ...
.. are selectively projected and retracted toward the axis O--O of the needle 69 (Japanese Patent Laid-Open No. 59-179862) to form the pile 13
・ The length of 43 ……… is changed from the base cloth 68 to the pile locking rod 19.
It relates to a tufted machine for height pile construction, in which a pattern is drawn on the pile surface according to the height difference between the piles, depending on the distance to 49 ...

[0002]

2. Description of the Related Art Pile thread loops 12 and 42 which are locked by several pile locking rods 19 and 49 which are mounted in a multi-tiered manner.
To cut the piles into cut piles 13 and 43, engage them with the cutting edges 20 and 50 of those pile locking rods.
When driving a large number of knives up and down, the cutting edge of the knives meshes with the cutting edges 20 and 50 of the upper and lower pile locking rods slightly, so when continuously operating the tufted machine, the pile thread loop 12 and 42 There is a miscut that is not sheared.

Therefore, the inventor of the present invention has two knives 1 which are engaged with the cutting edges 20 and 50 of the upper and lower pile locking rods, respectively.
4 and 44 of the knife 14 that meshes with the upper cutting edge 20 and the cutting edge 21 of the knife 14 that meshes with the lower cutting edge 50 of the knife 44
A tufted machine for high and low pile planting was developed in which miscuts were prevented by projecting to the upper side of No. 1 and overlapping them (JP-A-2-112462).

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
A blade edge 50 protruding upward is formed at 462, and a side surface of the knife 14 (hereinafter, referred to as upper knife) that acts on the upper pile locking rod 19 (hereinafter, referred to as upper pile locking rod). 16 and the lower pile locking rod 49 (hereinafter,
It is called the lower pile locking rod. It is disclosed as an embodiment that a gap 70 is formed between the edge 44 of the knife 44 (hereinafter, referred to as the lower knife) that acts on (1).
The present invention discloses specific means for carrying out the above-mentioned prior invention by providing the gap 70 between the side surface 16 of the upper knife 14 and the end edge 45 of the lower knife 44 as described above. ..

[0005]

That is, in the present invention, (a)
Two pile locking rods 19 and 49 each having a cutting edge that cooperates with a knife to shear the pile thread loop at the lower edge are divided into two upper and lower stages, and (b) mesh with those cutting edges 20 and 50 to Edge 1 of blade edge 21/51 for shearing pile thread loop 12/42 locked by pile locking rod 19/49
Two flat knives 14 ・ 44 formed on 5 ・ 45
The blade edge 21 of the one knife 14 projects above the blade edge 51 of the other knife 44 and is overlapped.
(C) Cutting edge 2 of one knife 14 protruding above the upper side
Multi-cut pile planting tufts 1 mounted so that one acts on the cutting edge 20 of the upper pile locking rod 19 and the other cutting edge 51 of the knife 44 acts on the cutting edge 50 of the lower pile locking rod 49. In the machine, (d) an edge 15 of a side surface 16 of the upper knife 14 that contacts the side surface of the upper pile locking rod 19 has a side surface 3 of the upper pile locking rod.
A knife having a cutting edge 21 that is raised toward 0 and has a cutting edge 21 that meshes with a cutting edge 20 of a pile locking rod 19 is used at an edge 15 that follows a side surface 18 of the raised portion 17, and (e) the lower pile Lower stage knife 4 that contacts the side surface 46 of the locking rod 49
A gap 70 is formed between the edge 45 on which the fourth cutting edge 51 is formed and the side surface 16 of the upper knife 14.

The knife 14 according to the present invention is provided on the opposite side of the side surface 18 on which the cutting edge 21 of the edge 15 is formed in order to eliminate friction between the edge 15 and the adjacent pile locking rod. It is preferable to form a slope 25 on the side surface 24, which is continuous with the edge 15.

By the way, a knife (14.44) in a tufted machine that cooperates with a pile locking rod to shear a pile yarn loop to form a cut pile is disclosed in US Pat.
As described in 9, the length direction is set to a constant angle α.
(Approximately 12 degrees) Tilt the width direction by a constant angle β (approximately 5 degrees
The edge (15.45) having the cutting edge (21.51) is pressed against the side surface (30.60) of the pile locking rod and attached to the knife block (66).

Therefore, when the knife 14 is applied to a tufting machine for planting high and low piles, in order to press the upper and lower cutting edges 21 and 51 against the side surfaces 16 and 46 of the upper and lower pile locking rods 19 and 49, the present invention is concerned. The knife 14 is used as an upper knife, the raised portion 17 is directed toward the lower knife 44, and the cutting edge 21 thereof is projected above the cutting edge 51 of the lower knife 44 and is attached to the knife block 66 by being superimposed on the lower knife 44. It will be.

In a state in which these knives 14 and 44 cooperate with the upper and lower pile locking rods 19 and 49, the upper knife 14 has a protruding ridge 17 from the upper pile locking rod 19. Since it is pushed back by receiving the reaction force of, the gap 70 is formed between the overlapping end edge 45 of the lower knife 49 and the side surface 16 of the upper knife 14.
Will be possible.

For this reason, even if the upper and lower knives 14 and 44 are piled up and inserted into the fitting holes 65 of the looper block 66 to be mounted, the lower stage knife 44 holds the cutting edge 21 of the upper stage knife 14 to the upper stage pile locking rod. The upper knife 14 does not act to push it back from the upper blade 19, but the upper knife 14 presses against the upper pile locking rod 19 with its own elastic force to shear the pile yarn loop 12. On the other hand, the lower knife 44 is not elastically urged by the upper knife 14 but presses against the lower pile locking rod 19 with its own elastic force to cooperate with the lower pile locking rod 49. And the upper and lower knives 14.4
4 will act on the upper and lower pile locking rods 19 and 40 independently without interfering with each other.

Thus, the raised portion 17 of the upper knife 14 is
Is a gap 70 that eliminates interference between the upper and lower knives 14 and 44.
However, in order to eliminate the interference between the knives 14 and 44 more effectively,
A notch 2 that extends from the cutting edge 21 of the upper knife 14 to a position beyond the cutting edge 51 of the lower knife 44.
3 is attached, and when the upper and lower knives 14 and 44 are piled up and attached to the knife block 66, the cutting edge 51 of the lower knife 44 should not be hidden under the upper knife 14 and appear in the notch 23. Also, the intermediate portion of the upper knife 14 that overlaps the lower knife 44 is raised to the same side surface side as the raised portion 17 to be thickened, and the raised portion 1 on the edge side thereof is formed.
Forming a groove 29 between the ridge 7 and the raised portion 28 of the intermediate portion is also a means for effectively carrying out the present invention.

In order to form the groove 29 between the ridge 17 on the edge side of the upper knife 14 and the ridge 28 in the middle portion in this way, cutting the side surface 16 of the knife base is also one method. However, the flat plate 64 may be inserted between the upper and lower knives 14 and 44.

The ridge 17 can thus be provided when cutting the side surface 16 of the knife body, but the edge 15 of the knife body is
Can be formed by bending (FIG. 10), or can be formed by adhering a blade piece 63 of cemented carbide or the like to the side surface 16 of the edge 15 of the knife body (FIG. 11).

When the knife 14 according to the present invention is applied to a tufted machine for planting high and low piles, the high pile 43 formed by being locked by the lower pile locking rod 49 and sheared by the lower knife 44 is When it moves to the rear of the tufted machine together with the base cloth 68, it comes into contact with the side edge 22 continuing from the cutting edge 21 of the upper knife 14.

At this time, the high pile 43 and the upper knife 14
In order to eliminate friction with the upper pile 43, the fluff of the high pile 43 and the side surface 18 of the upper knife 14 and the upper pile locking rod 1
9 and the side surface 30 of the both to fit the two cutting edges 20, 21
In order to prevent the meshing of the blades from being impaired, the side surface 2 opposite to the side surface on which the blade edge 21 of the upper knife 14 is formed.
4 is preferably formed with a slope 26 continuing from the side edge 22.

Further, the knives 14 and 44 are inclined in the lengthwise and widthwise directions on the side surfaces 30 and 60 of the pile locking rods 19 and 49 at a constant angle α and β, as described above. With the upper and lower knives 14 and 44 stacked,
The rear side edge 31 of the upper knife 14 on the outside of the upper knife 14 comes too close to the adjacent loopers 11 and rubs against each other, and the side surface 24 of the upper knife 14 is pressed by the adjacent loopers 11, resulting in the knife 14・ 44 and pile locking rod 19
・ Easily spoils the engagement with 49.

In order to avoid such a risk, the notch 2 is provided at a position away from the end edge 15 of the side edge 31 of the upper knife 14.
7 is preferably attached so that the rear side edge 31 of the upper knife 14 does not rub against the adjacent looper 11.

As the lower knife 44, a conventional flat plate knife is used, and when the cutting edge 51 is consumed, the edge 45 may be shaved and the cutting edge 51 may be reattached.

However, in the upper knife 14, the edge 1
Since the ridge 17 is gradually scraped away and disappears by polishing 5, the ridge 17, the notches 21 and 27, and the slopes 25 and 26 are formed on the upper and lower ends 15A and 15A of the knife base.
It is economical to form B symmetrically in the vertical direction.

In that case, as shown in FIG.
It is advisable to bend the entire length direction from the edge 15A to the edge 15B of the knife 14 by a predetermined angle .theta.

[0021]

1 shows a tufted machine for multi-stage cut pile planting equipped with a knife 14 according to the present invention, in which two pile locking rods 19 and 49 are divided into upper and lower stages. Pile thread loop 12.4 that meshes with the blade edges 20/50 and their pile locking rods 19/49 lock
Two flat plate-shaped knives 14 and 44 having cutting edges 21 and 51 for shearing 2 formed on the edges 15 and 45 are superposed on each other by projecting the cutting edge 21 of one knife 14 above the cutting edge 51 of the other knife 44. , The cutting edge 21 of the knife 14 protruding to the upper side is the cutting edge 2 of the upper pile locking rod 19.
0, and the blade edge 51 of the other knife 44 is attached so as to act on the blade edge 50 of the lower pile locking rod 49, and the side surface of the upper knife 14 that contacts the side surface of the upper pile locking rod 19 The edge 15 of the pile 16 is bulged toward the side surface 30 of the upper pile locking rod, and the edge 15 following the side surface 18 of the raised portion 17 is provided with the cutting edge 2 of the pile locking rod 19.
Between the side edge 16 of the upper knife 14 and the edge 45 of the lower knife 44, which is formed with the cutting edge 21 and is in contact with the side surface 46 of the lower pile locking rod 49. A gap 70 is formed in the.

Upper and lower edges 15A.1 of the upper knife 14
5B is provided with a notch 23 in a side edge 22 continuing from the cutting edge 21 so as to be symmetrical with respect to the upper and lower points, and a side surface 24 opposite to the side surface 18 on which the cutting edge 21 is formed has a slope 25 continuing from the edge 15. An inclined surface 26 is attached to the side edge 22 and a notch 27 is formed at a portion of the rear side edge 31 away from the end edge 15.

An intermediate portion between the upper and lower end edges 15A and 15B is raised on the same side surface side as the raised portion 17 to be thickened, and a flat plate is provided between the raised portion 17 on the edge side and the raised portion 28 in the intermediate portion. It is a band-shaped shallow groove 29 that is recessed in.

The knife block 66 is formed of a channel material having a dovetail groove 40 sandwiched between upper and lower groove wall surfaces 61 with a groove edge 62 protruding like a claw, as disclosed by the present inventor in Japanese Patent Laid-Open No. 62-97961. The upper and lower groove wall surfaces 61 have insertion holes 65 into which two upper and lower knives 14 and 44 can be inserted.
Is attached.

In the dovetail groove 40, the elastic resin plate 39, the hard abutting plate 38, and the abutting plate 37 are sequentially applied to the side edges 22 of the knives 14 and 44 inserted into the fitting holes 65. Push screw 3 that is inserted and pushed out from the abutting plate 37
6, the elastic resin plate 39 is pressed against the side edges 22 of the knives 14 and 44 via the hard abutting plate 38, and as a result, the knives 14 and 44 are fixed to the knife block 66.

The upper and lower pile locking rods 19 and 49 are divided into separate loopers 11 and 12, respectively.

The upper looper 11 is a looper block 5
Notch 5 at the rear end that is inserted into the fitting hole 9
The projection 56 of the cover plate 57 is press-fitted into the cover 8 and is thereby gripped so as not to slip out of the fitting hole of the looper block 59.

The lower looper 41 is disclosed in
No. 9-179862 and Japanese Patent Publication No. 61-35303 (JP-A-58-144162), a piano wire 55 is used.
The tip of the lower pile locking rod 49 and the tip of the upper pile locking rod 19 are vertically aligned with each other so that the needle can be driven to project and retract by being inserted into the lower insertion hole of the looper block 59. When the pile yarn loop (42) formed by 69 is received and in the retracted state, the tip of the lower pile locking rod 49 is located at a position retracted from the tip of the upper pile locking rod 19, and the needle The pile yarn loop (12) formed by 69 is not received, but the pile yarn loop (12) is received by the upper pile locking rod 19.

The pile thread loop 42 received by the lower pile locking rod 19 is the cutting edge 5 of the lower pile locking rod 49.
0 and the blade edge 51 of the lower knife 44 are sheared to form the high cut pile 43.

On the other hand, the pile thread loop 12 received by the upper pile locking rod 49 is sheared by the cutting edge 20 of the upper pile locking rod 19 and the cutting edge 21 of the upper knife 14 to form the low cut pile 13. It will be.

Lower looper 41 with this piano wire 55
As described in JP-A-59-179862 and JP-B-61-35303 mentioned above, the indentation drive is selectively performed every stitch cycle, whereby the high cut pile 43 and the low cut pile 13 are driven. The desired pattern with a border is drawn on the pile surface.

[0032]

As described above, in the tufted machine according to the present invention, the upper and lower cutting edges 21 and 51 are provided with the upper and lower pile locking rods 19.
In order to press the side surfaces 16 and 46 of 49, the knife 14 according to the present invention is used as an upper knife and the raised portion 1 thereof is used.
7 toward the lower knife 44, and the blade edge 21 thereof is projected above the blade 51 of the lower knife 44 so that the lower knife 44
It will be mounted on the knife block 66 by overlapping with each other, but in the state where the pair of knives 14 and 44 cooperate with the upper and lower pile locking rods 19 and 49, respectively,
The upper knife 14 receives the reaction force from the upper pile locking rod 19 at the protruding ridge 17 and is pushed back, so that the edge 4 of the overlapping lower knife 49 is overlapped.
5 and a side surface 16 of the upper knife 14, a gap 70 is formed.

For this reason, even if the upper and lower knives 14 and 44 are piled up and inserted into the fitting holes 65 of the looper block 66 to be mounted, the lower-stage knife 44 holds the cutting edge 21 of the upper-stage knife 14 to the upper-stage pile locking rod. The upper knife 14 does not act to push it back from the upper blade 19, but the upper knife 14 presses against the upper pile locking rod 19 with its own elastic force to shear the pile yarn loop 12. On the other hand, the lower knife 44 is not elastically urged by the upper knife 14 but presses against the lower pile locking rod 19 with its own elastic force to cooperate with the lower pile locking rod 49. And the upper and lower knives 14.4
Since 4 acts independently on the upper and lower pile locking rods 19 and 40 without interfering with each other, the pile thread loop 12 locked to the upper pile locking rod 19 and the lower pile locking rod 19 With the pile yarn loop 42 locked to 19, it is surely sheared without miscut.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a tufted machine according to the present invention.

2 is a plan view of a knife block appearing in section AB of the tufted machine according to the present invention shown in FIG. 1. FIG.

3 is a front view of a knife block and a looper appearing in a cross section CD of the tufted machine according to the present invention illustrated in FIG. 1. FIG.

4 is a plan view of a knife attached to the tufted machine according to the present invention shown in FIG. 1. FIG.

FIG. 5 is a front view of the knife according to the present invention shown in FIG.

FIG. 6 is a bottom view of the knife according to the present invention shown in FIG.

FIG. 7 is an enlarged side view of the cooperating portion of the knife and the looper of the tufted machine according to the present invention shown in FIG.

8 is a cross-sectional view taken along the line EF of the knife and the looper according to the present invention shown in FIG.

9 is a sectional view taken along the line GH of the knife and the looper according to the present invention shown in FIG.

FIG. 10 is a sectional view of an essential part of a knife according to the present invention.

FIG. 11 is a sectional view of an essential part of the knife according to the present invention.

[Explanation of symbols]

 11 Looper 12 Pile Thread Loop 13 Cut Pile 14 Knife 15 Edge 16 Side 17 Protrusion 18 Side of Protrusion 19 Pile Locking Rod 20 Looper Edge 21 Knife Edge 22 Side Edge 23 Notch 24 Side 25 Slope 26 Bevel 27 Notch 28 Raised part 29 Groove 30 Side surface 31 Side edge 36 Push screw 37 Hitting plate 38 Hard hitting plate 39 Elastic resin plate 40 Dovetail groove 41 Looper 42 Pile thread loop 43 Pile 44 Knife 45 End edge 46 Side face 49 Pile locking rod 50 Looper Blade Edge 51 Knife Blade Edge 55 Piano Wire 56 Projection 57 Lid Plate 58 Notch 59 Looper Block 60 Side Surface 61 Groove Wall Surface 62 Groove Edge 63 Blade Piece 64 Flat Plate 65 Fitting Hole 66 Knife Block 67 Pile Thread 68 Base Cloth 69 Needle 70 Gap

Claims (8)

[Claims] 1. A pile yarn loop 12 together with a looper 11.
The side edge 16 of the edge 15 of the flat knife 14 that is sheared into the cut pile 13 is raised, and the edge 15 following the side 18 of the raised portion 17 is attached to the edge of the pile locking rod 19 of the looper 11. A tufted knife 14 characterized in that a cutting edge 21 that meshes with 20 is formed. 2. The above-mentioned claim 1 having a notch 23 in a side edge 22 following the cutting edge 21 of the knife 14 according to the above-mentioned claim 1.
Knife 14 according to. 3. The inclined surface 25 following the end edge 15 is formed on the side surface 24 opposite to the side surface 18 on which the cutting edge 21 of the knife 14 is formed, according to claim 1 above. Knife 14. 4. The side edge 22 is formed on the side surface 24 opposite to the side surface on which the cutting edge 21 of the knife 14 according to claim 1 is formed.
The knife (14) according to claim 1, wherein a slope (26) is formed following the knife (14). 5. The knife 14 according to claim 1, wherein the side edge 31 of the knife 14 according to claim 1 has a notch 27 at a position apart from the end edge 15. 6. The knife 14 according to claim 1, wherein the blade edge 21 according to claim 1 is formed on both upper and lower edges 15A and 15B of the knife 14. 7. The upper and lower edge margins 15 according to claim 6 above.
The intermediate portion of A · 15B is raised on the same side surface side as the raised portion 17 to be thickened, and a groove 29 is formed between the raised portion 17 on the edge side and the raised portion 28 of the intermediate portion. Knife 14 according to item 6. 8. (a) Two pile locking rods 19 each having a cutting edge on a lower edge thereof which cooperates with a knife to shear a pile yarn loop.
・ 49 is divided into upper and lower tiers, and their cutting edges 20 ・
A blade edge 21 that meshes with 50 and shears the pile thread loops 12 and 42 locked by those pile locking rods 19 and 49.
Two flat knives 1 with 51 formed on the edges 15 and 45
The cutting edges 21 of one knife 14 protrude from the cutting edge 21 of the other knife 44 to the upper side of the cutting edge 51 of the other knife 44, and the cutting edges 2 of the one knife 14 projecting to the upper side.
Multi-cut pile planting tufts 1 mounted so that one acts on the cutting edge 20 of the upper pile locking rod 19 and the other cutting edge 51 of the knife 44 acts on the cutting edge 50 of the lower pile locking rod 49. In the machine, (b) the side surface 1 of the upper knife 14 that contacts the side surface of the upper pile locking rod 19
The edge 15 of 6 is raised toward the side surface 30 of the upper pile locking rod, and the edge 2 continuing from the side surface 18 of the raised portion 17 meshes with the cutting edge 20 of the pile locking rod 19
1 is formed, and (c) between the side edge 16 of the upper knife 14 and the end edge 45 of the lower knife 44 that is in contact with the side surface 46 of the lower pile locking rod 49 and on which the cutting edge 51 of the lower knife 44 is formed. A tufted machine having a gap 70 formed therein.