JPH0126791Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a pile forming device for tufted carpets.

[Conventional technology]

Conventionally, tufted carpets are made by piercing the pile warp threads through the base fabric with needles to form long piles and short piles, cutting only the long piles and mixing loop piles and cut piles, and the prescribed method of tufted carpets. Tufted carpets, which are made by cutting off part of the long pile to create cut pile, and which is a mixture of loop pile and cut pile, are known (in 1973).
-31752).

A part of the pile of the predetermined length is cut to form a carpet containing a mixture of loop pile and cut pile in the following manner.

As shown in FIG. 4, the pile warp threads 3 that have been pierced through the base fabric 2 with the needle 1 are connected to the hooks 5 at the tip of the looper 4, which is moving left and right in FIG. 4 in conjunction with the vertical movement of the needle 1. , protrusion 7 of leaf spring 6
The pile warp threads 3 are interposed between the hooks 5 and 5, and the pile warp threads 3 are secured to the hooks 5. The tip of the pile 8 held on the hook 5 is cut by a knife 9 that moves up and down to form a cut pile 10. When the pile to be cut is formed, the protruding piece 7 of the leaf spring 6 is in the A position to prevent the pile 8 locked to the hook 5 from falling off from the hook 5. Next, when forming a pile that will not be cut, by retracting the protruding piece 7 of the leaf spring 6 to position B and performing needling as described above, the loop that is locked to the hook 5 will be caused by the back and forth swinging movement of the looper 4. As a result, it comes off the hook 5 and is not cut.

[Problem that the invention attempts to solve]

When forming a pile using the above conventional method, the pile length is always constant, and only when the formed loop comes off the hook of the looper, the loop is not cut and becomes a loop pile, and when it does not come off, it becomes a cut pile. Become.

Therefore, the heights of both cut piles and loop piles are substantially constant, and piles with different heights cannot both be used as cut piles.

The device of the present invention aims to solve this problem.

[Means for solving problems]

A leaf spring having a protrusion at its tip is disposed opposite to the looper so that the protrusion can move oppositely between the tip and base of the hook of the looper, and the looper and the leaf spring are connected to the needle. a high pile cutter that is supported to move forward and backward, and that cuts the pile that is locked to the hook of the looper at a position where the looper and the leaf spring advance relative to the needle; A low pile cutter is provided to cut the pile that has come off the looper, and the long pile that is attached to the hook of the looper and the short pile that has come off the hook of the looper are cut with each cutter. Both long and short piles are called cut piles.

[Effect]

The high cut pile is created as follows. The pile warp threads pierced through the base by the needles are caught by the hooks of the advanced looper, and a pile is formed by the upward movement of the needles. This pile is sequentially moved from the newly formed pile to the base of the hook and is cut by a high pile cutter installed near the hook.

Low-cut piles are created as follows, and the pile warp threads are locked to the hooks of the looper using needles in the same way as for high-cut piles, but the pile warp threads are under more tension than when forming a high pile. The yarn is fed with the yarn being added.
When the thread is caught on the hook of the looper, the protruding piece of the leaf spring retreats to the base of the hook of the looper, so the pile warp threads caught on the hook may be under a large tension. As the looper retreats, it immediately comes off the looper and forms a low pile. Then, the pile is cut by a low pile cutter located near the low pile removed from the looper to form a low cut pile.

In this way, the cut pile can be a mixture of high cut pile and low cut pile.

〔Example〕

An embodiment of the device of the present invention will be explained with reference to FIGS. 1 to 3.

A needle 1 is located above the base fabric 2, and is repeatedly moved up and down by a mechanism (not shown) to pass the pile warp threads 3 through the underside of the base fabric 2. A looper 4 has a hook 5 at its upper end, and a leaf spring 6 is slidably fitted into a horizontal groove 12 provided in a base 11. An L-shaped protrusion 7 is formed at the tip of the leaf spring 6, and the side of the protrusion 7 is brought into elastic contact with the side of the hook 5. The leaf spring 6 is moved left and right by a mechanism not shown, so that the protrusion 7 at the tip can be moved between the A position and the B position shown in FIG.

Reference numeral 9 denotes a pile cutter provided on the side of the hook 5, and is used to cut a high pile 8 that is fixed to the hook 5, which will be described later. Further, a low pile cutter 13 is provided above the hook 5 of the looper 4 and between the base fabric 2 and the high pile cutter 9.

Now, when the needle 1 moves up and down and pierces the pile warp 3 through the base fabric 2, the looper 4, which is reciprocating left and right in conjunction with the up and down movement of the needle 1, moves the pile warp 3 guided by the needle 1. is passed between the projecting piece 7 and the hook 5 and is engaged with the hook 5 to form a high pile 8. Then, as the needle punch progresses, the high pile 8 that is locked on the hook 5 is cut by the high pile cutter 9 and becomes a cut pile 10.
becomes. The pile warp threads 3 are guided by the needles 1 under appropriate tension during the above-described high pile formation.

To form a low pile, the pile warp threads 3 are engaged with the hooks 5 of the looper 4 in the same manner as described above, but at this time the protruding piece 7 of the leaf spring 6 is retracted to the B position. Then, the amount of the pile warp yarns 3 fed is reduced, and when the pile warp yarns 3 are pierced through the base fabric 2 by the needles 1, tension is applied to the yarns, and the yarns are locked to the hooks 5 of the looper 4. In this state, when the looper 4 moves backward in accordance with the movement of the needle, the pile, which was locked to the hook 5 of the looper 4 under strong tension, is released from the hook 5 without being pressed by the protrusion 7 of the leaf spring 6. This results in a low pile 14 as shown by the dotted line in Figure 2. The low pile 14 is cut by the low pile cutter 13 as the base fabric 2 advances to form a low cut pile 1.
It becomes 5.

[Effect] In the device of the present invention, the hook of the leaf spring that is in contact with the hook of the looper that locks the pile warp is retracted when forming a low pile, and the pile warp is under tension. Since the pile warp can be locked to the hook of the looper, the pile can be detached from the hook of the looper when the looper retreats, resulting in a low pile.
Since it can be cut with a low-pile cutter, it is possible to cut both high-pile and low-pile with a conventional high-pile cutter, making it possible to obtain a carpet that has both high-cut pile and low-cut pile in one base fabric. .

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the device of the present invention when forming a high pile, and FIG. 2 shows a schematic side view of the device when forming a low pile.
FIG. 3 is a cross section of a cut pile produced by the device of the present invention, and FIG. 4 is a schematic side view of the conventional device. 1... Needle, 2... Base fabric, 3... Pile warp, 4... Looper, 5... Hook, 6... Leaf spring, 7... Projection, 8... Pile, 9... High pile cutter , 10...high cut pile, 13...
...Low pile cutter, 14...Low pile, 1
5...Low cut pile.

Claims (1)

[Scope of utility model registration request] A leaf spring having a protrusion at its tip is disposed opposite to the looper so that the protrusion can move oppositely between the tip and base of the hook of the looper, and the looper and the leaf spring are connected to the needle. A high pile cutter that is supported so as to be movable forward and backward and that cuts the pile that is engaged with the hook of the looper at a position where the looper and the leaf spring are advanced relative to the needle; A low pile cutter is provided between the base fabric and the long pile cutter to cut the pile that comes off the hook when the leaf spring moves to the base of the hook. A pile forming device for a tufted carpet machine, characterized in that both the long and short piles are cut into cut piles by cutting both the short pile and the short pile that have come off the hook of the looper with respective cutters.