JPH0136948Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a special pile flocking sewing machine called a so-called foot drag, in which piles are implanted in the base fabric. This invention relates to a pile flocking sewing machine that continuously forms a loop pile by engaging thread with a looper.

<Prior art> When a highly twisted pile yarn is used and the loop pile is made long, a twisted loop pile is formed and a new type of foot drag can be obtained.

However, when a conventional sewing machine with a loop is used, a disadvantage is that the loop pile formed later becomes entangled with the loop pile formed earlier. Furthermore, there was also a drawback that the piles of the flocked loop pile were uneven.

In order to solve this problem, the Special Public Interest Publication No. 60-37213
A pile flocking sewing machine described in the above publication has been proposed.

<Problem to be solved by the invention> However, in this pile flocking sewing machine, both the first and second loopers are moved back and forth continuously. Therefore, even if the second looper is locking the old loop pile until the first looper receives the new loop pile, the second looper is locked until the first looper engages with the new loop pile. It has already begun its retreat. As a result, the old loop pile may fall out from the tip of the second looper during the second looper's backward movement. In this way, if the second looper starts to move backward first and the old loop pile comes off from the tip of the second looper, the needle will get stuck inside the old loop and the old and new loops will become entangled, or the needle will become stuck. While inserting the new loop into the base fabric, the pile yarn of the old loop is pulled back, causing the problem that the old loop becomes shorter.

<Means for Solving the Problems> Therefore, the present invention solves the above problems by providing a pile flocking sewing machine having the following configuration.

The pile flocking sewing machine of the present invention uses a substantially L-shaped looper arranged on substantially the same plane and having a key-shaped tip in order to form one long loop pile from highly twisted pile yarn. I have two.

The first looper has a key-shaped tip to receive the pile thread from the sewing machine needle through which the pile thread is inserted, and continuously rotates and reciprocates within a predetermined rotation angle with the base end as a rotation axis. This is what we do.

The second looper is larger than the first looper, has a key-shaped distal end, and is bifurcated. It performs rotational reciprocating motion. This pivot position is behind the pivot position of the first looper and the sewing machine needle, and the amplitude of the intermittent rotational reciprocating motion of the second looper is greater than the amplitude of the continuous rotational reciprocating motion of the first looper. It is configured to be.

As a result of the above, the sewing machine needle with the pile thread inserted descends and is passed through the base fabric, and then the first looper moves forward and the tip of the first looper is inserted into the loop of the pile thread. After receiving the pile yarn and engaging the first looper with the pile yarn, the second looper that had stopped in front of the first looper engages the old loop pile that was engaged in front of the first looper. Get rid of it, the first
When returning to the back of the loopa and moving forward again,
The new loop pile that is engaged with the first looper is engaged with the groove at the tip, is taken over from the first looper, and the new loop pile is engaged with the first looper.
The second looper remains stopped at the position in front of the first looper until the needle is carried forward to the front of the looper and stopped again, and then the sewing machine needle descends again and the first looper moves backward and forwards to receive the pile thread. It is characterized by

<Operation> The first looper and the second looper perform continuous rotational reciprocating motion and intermittent rotational reciprocating motion, respectively, according to the above-described configuration. At this time, since the shaft support position of the second looper is behind the shaft support position of the first looper and the sewing machine needle, the new loop pile that is engaged with the first looper is engaged with the groove at the tip, and the Accepted from Roopa,
The forward movement of the first looper until it is brought to the front and stopped again is performed in a downward arc. As a result, the new loop pile engaged with the second looper is slightly pulled downward, so the second looper
It will not come out of the looper carelessly. and,
While the first looper forms a new loop pile, the second looper continues to hold and lock the old loop pile at the front position of the first looper by the action of a positive cam, so that the long pile loops are implanted. The piles do not intertwine at all and can be formed to a uniform length. Furthermore, when the second looper, which has been stopped in front of the first looper, moves backward, its tip portion moves backward while rising, so that the loop pile can be reliably engaged and disengaged.
Further, the second looper is larger than the first looper, and the amplitude of the intermittent rotational reciprocation of the second looper is larger than the amplitude of the continuous rotational reciprocation of the first looper. Therefore, the second looper retreats and moves forward quickly with a large amplitude, and as a result, the second looper is strongly pulled out from the old loop pile, allowing reliable engagement and disengagement.

<Example> The attached FIG. 1 is a left side view of a pile flocking sewing machine with a looper according to the present invention. Sewing machine head 1
A base fabric 2 is placed on top of the base fabric 2 with the direction of arrow A as the traveling direction (forward), and a highly twisted pile yarn 3 is flocked thereon with a sewing machine needle 4 to form a long loop pile 5. be done. There are two loopers, the smaller one being the first looper 6 and the larger one being the second looper 7.

FIG. 2 is a partial perspective view of the operating state of the looper of the pile flocking sewing machine with a looper according to the present invention. The first looper 6...6 has a substantially L-shape with a key-shaped tip, and a swing arm 1 which is also pivotally connected to the other end of the rod 9 which is pivotally connected to the crank mechanism 8.
The base end of the L-shape is attached to the first looper shaft 11 to which the looper 0 is fixed. Therefore, the first looper 6...6
As the crank mechanism rotates, the tip continuously moves back and forth.

On the other hand, the second loopers 7...7 have a substantially L-shape with a key-shaped tip, and as shown in FIG. 5, the tip portions 22 and 23 are bifurcated. The base end of the second looper 7 is attached to the second looper shaft. The operation of this second looper shaft 17 is as follows:
Chain 1 from the crankshaft 12 of the crank mechanism 8
3, the camshaft 14 is rotated, and the operation of the positive cam 15 attached to the camshaft 14 is transmitted to the second looper shaft 17 via the swing arm 16.

The pivot position of the base end of the second looper 7 is behind the pivot position of the first looper 6 and the sewing machine needle 4.

FIG. 3 shows the shape of the positive cam 15,
Reference numeral 18 indicates a shaft, and reference numeral 19 indicates a groove cut into the disk.
The shape of this groove 19 controls the operation of the second looper. That is, α is 100°, and the second looper remains stationary for the remaining 260°, and moves quickly forward and backward in increments of 50°, which is 1/2 of 100°.

4. FIGS. 1 to 6 are schematic side views showing the operating states of the first and second loopers of the pile flocking sewing machine according to the present invention.

In FIG. 4, the sewing machine needle 4a is located above the base fabric 2 and is rising. The first looper 6a is moving backward, and the second looper 7a is moving forward.

During the transition from FIG. 4 1 to FIG. 4 2, the base fabric 2 moves forward (in FIG. 4, the left side is the forward direction), and the sewing machine needle 4
a is inserted into the lower part.

In FIG. 4 3, the sewing machine needle 4c is rising and the first
The looper 6c moves forward and engages the pile yarn 3c with the first looper 6c to form a new loop pile. During this time (FIGS. 4 1 to 4 3), the second loopers 7a, 7b, 7c are stopped at the forward position while engaging the loop pile. Moreover, the tip is bifurcated, and the amplitude of the intermittent rotational reciprocating motion of the second looper is larger than the amplitude of the continuous rotational reciprocating motion of the first looper. Sewing machine needles 4a, 4b, 4
It can be kept far away from the operating position of c.

4 In FIG. 4, the second looper 7d is moved backward and the old loop pile 20 that was previously engaged is disengaged, but at this time, the new loop pile 21 that was engaged with the first looper 6d is used. (push out), so the old loop pile 20 is replaced by the new loop pile 21
There is no risk of it getting inside. That is, the second looper 7d is pushed out by the previous old loop pile 20 that is engaged with the second looper 7d that is retreating, and is pushed relatively forward from the tip of the second looper 7d.
Smoothly engage and disengage from d. Moreover, since the pivot position of the base end of the second looper 7d is behind the pivot position of the first looper and the sewing machine needle, when the second looper 7d, which had stopped in front of the first looper, makes a backward movement, , its tip part rises and retreats,
The loop pile can be reliably engaged and disengaged. Further, the second looper is larger than the first looper, and the second looper is larger than the first looper.
The amplitude of the intermittent rotational reciprocation of the looper is configured to be larger than the amplitude of the continuous rotational reciprocation of the first looper. Therefore, a large amplitude is created quickly, and the second loop pile is moved from the old loop pile.
The looper 7d is pulled out strongly, allowing reliable engagement and disengagement.

FIG. 4 shows a state in which the second looper 7e is further retreated.

FIG. 4 shows that the second looper 7f moves forward again and re-engages the new loop pile 21', which was engaged with the first looper 6f, with the second looper 7f. Note that, as shown in FIGS. 1 and 2, the second looper 7 has two forked tips 22 and 23, and one tip 22 is slightly bent in the lateral direction.

Therefore, if the second looper 7 is arranged so as to operate on substantially the same plane as the first looper 6, the first looper 7
When re-engaging from the looper 6 to the second looper 7 and retracting the second looper 7, it is handled by the loop pile of the first looper 6, allowing smooth engagement and disengagement without getting entangled. Note that the position of the first looper relative to the sewing machine needle and the second looper relative to the first looper may be arranged on either the left or the right.

As described above, both loopers sequentially repeat the operations shown in FIG. 4, thereby performing flocking of piles one after another. The feature of the present invention is that while the first looper is engaged with the pile yarn, the second looper quickly moves back and forth (Fig. 4 4 to 6), and the loop pile is transferred to the second looper. engages, stops in front of the first looper, and then
The looper remains engaged with the old loop pile until it forms a new loop pile (FIGS. 4, 1 to 3).

It is the positive cam that ensures the intermittent movement of the second looper, and in this embodiment, as shown in FIG. In this time, the time required for round trip is 1/3.6 of the total, and the stopping time is 2.6/3.6 of the total. During this locking time, the sewing machine needle 4 descends, the first looper 6 fully engages the flocked loop pile, and the second looper 7 continues to hold the old loop pile in the forward position. Therefore, while the new loop pile is being formed, the old loop pile is held at the front position by the second looper and will not come off, so the new and old loop piles will never get tangled, and the hair of each loop pile will also be reduced. Therefore, it can be formed uniformly.

<Effects of the invention> According to the pile flocking sewing machine according to the invention, unlike conventional ones, while the first looper forms a new loop pile, the second looper is moved to the front position of the first looper by the action of the positive cam. Since the old loop pile is held and kept locked, the implanted long-haired loop pile can be formed to have a uniform length without intertwining with each other at all.

In particular, since the pivot position of the second looper is behind the pivot position of the first looper and the sewing machine needle, its forward movement is performed in a downward arc, and as a result, it engages with the second looper. Since the loop pile is slightly pulled downward, it will not accidentally come off from the second looper.

On the other hand, when the second looper makes a backward movement, its tip portion moves backward while rising, so that the loop pile can be reliably engaged and disengaged. Also, the second
The looper is larger than the first looper, and is configured such that the amplitude of the intermittent rotational reciprocating motion of the second looper is larger than the amplitude of the continuous rotational reciprocating motion of the first looper. The retreat and advance are done quickly with large amplitudes, and as a result, the second looper is strongly pulled out from the old loop pile.
This enables reliable engagement and disengagement.

As described above, the present invention can reliably manufacture a desired truck due to its structural features.

[Brief explanation of the drawing]

1 to 5 illustrate an embodiment of the present invention, and FIG. 1 is a left side view of a pile flocking sewing machine;
Figure 2 is a partially transparent perspective view of the pile flocking sewing machine, Figure 3 is a plan view of the positive cam used to operate the second looper, and Figures 4 to 6 are schematic side views showing the operating states of both loopers. 1 is a front view of the second looper, and FIG. 5 2 is a plan view of the second looper. Codes in the figure: 2...Base fabric, 3...Pile yarn, 4...
...Sewing machine needles, 5, 20, 21, 21', 24...
Loop pile, 6...first looper, 7...second looper, 15...positive cam.

Claims (1)

[Scope of Claim for Utility Model Registration] In a pile flocking sewing machine that continuously forms a loop pile by engaging the pile yarn implanted in the base fabric with a sewing machine needle to a looper, In order to form a loop pile, there are two approximately L-shaped loopers arranged on approximately the same plane and each having a key-shaped tip. The distal end is formed into a key shape in order to receive the pile yarn from the base end, and the second looper continuously rotates and reciprocates within a predetermined rotation angle using the base end as a rotation axis, and the second looper is larger than the first looper. , the distal end portion is formed into a key shape, and the distal end is further formed into two forks, and this second looper performs intermittently rotating reciprocating motion by a positive cam with the base end as a rotation axis,
Its pivot position is behind the pivot position of the first looper and the sewing machine needle, and the amplitude of the intermittent rotational reciprocating motion of the second looper is larger than the amplitude of the continuous rotational reciprocating motion of the first looper. As a result, the sewing machine needle with the pile thread inserted therethrough descends, and after the thread is passed through the base fabric, the first looper moves forward, and the tip of the first looper is inserted into the loop of the pile thread. After the first looper is inserted and receives the pile yarn, and the first looper is engaged with the pile yarn, the second looper, which was stopped in front of the first looper, When the loop pile is engaged and disengaged, returns to the rear of the first looper, and moves forward again, the new loop pile that is engaged with the first looper is engaged with the groove at the tip, takes over from the first looper, and moves forward again. The second looper stopped at a position in front of the first looper until the first looper moved backward and forward to receive the pile thread. A pile flocking sewing machine that is characterized by the fact that it remains as it is.