JP3981691B2 - Automatic binding machine - Google Patents

Description

    The present invention relates to an automatic binding and knotting machine that binds and binds, for example, one pair of socks, gloves, clothing or underwear, labeling, price tagging, and the like.

Labels displaying materials, sizes, prices, etc. are used to bind items to be sewn, such as socks and gloves, which are in the distribution process, underwear or clothing, Is designed to be performed with chain stitches.
In the case of chain stitching, since only one thread is entangled, pulling the thread end may cause it to slip off.

Therefore, the applicant of the present invention, as a sewing machine that can be bound using a single thread, allows the needle bar to swing within a certain range with the upper end portion being the center of swinging, and the needle bar has its swing range. An automatic binding and knotting machine was proposed in which the two stitched yarns were bundled and cut together on the lower surface of the workpiece to be moved up and down while being positioned at each outer end. (Patent Document 1)
Japanese Utility Model Sho 61-77967

  However, in the above-mentioned conventional one, the needle bar advances and retreats at an angle inclined with respect to the base surface, and the needle is stabbed into the sewing object in a substantially C shape, so that it is stabbed under the base. Equipment that forms the binding knot by increasing the space between the left and right loopers that hold the yarn, and the movement area of the thread stitch to bring the second stitch closer to the first stitch when gathering the yarn on the lower surface. There is a problem that the occupied space for arranging the space becomes large.

  The present invention has been proposed in view of such a point, and the entire space of the automatic binding machine is configured to be compact by reducing the space occupied by the devices constituting the binding section on the lower side of the base. It is characterized by.

  In order to achieve the above-mentioned object, according to the present invention, a needle bar having a needle attached to the tip is disposed at one end of the arm so as to be movable up and down and parallel to the lateral direction. A yarn that arranges a pair of loopers and moves one of the yarns located on the opposing surface side of the first looper and the second looper to the other yarn side between the pair of loopers and the lower surface of the needle plate Place the thread cutter and place the thread knot mechanism between the thread cutter and the pair of loopers in a state where the tip of the thread cutter can enter. The thread tightening needle is arranged in a state where it can be withdrawn from and retracted from the thread ring formed at the tip of the yarn knotting mechanism, and the second thread is in a state where it can be withdrawn and retracted along the needle plate below the needle plate. It features a cutting knife.

  In the present invention, since a needle bar formed by attaching a needle to the tip is disposed so as to be able to translate in the lateral direction at one end of the arm, the needle is stabbed in parallel with the workpiece. The interval between the yarns positioned along the needle trajectory is also constant, and the operating range of the device constituting the binding knot can be reduced, so that the space occupied by the device can be set narrow, and automatic binding is performed. The entire machine can be downsized.

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a schematic perspective view showing the upper mechanism of the automatic binding machine, and FIG.
In this automatic binding machine, a head (2) is arranged on a table (1), and a needle bar base (4) translates laterally at the tip of an arm (3) of the head (2). It is possible to arrange. A needle bar (5) is assembled to the needle bar base (4) so as to be movable up and down, and a needle (6) is fixed to the lower end of the needle bar (5) so as to be replaceable.

  The needle bar base (4) is fitted on and supported by a pair of parallel slide shafts (7) disposed laterally on the front end surface of the arm (3) at a predetermined interval in the vertical direction and slidably. In conjunction with the up-and-down movement of the needle bar (5), the needle bar (5) is configured to swing back and forth via the parallel slide link (8) in a state of reciprocating once for every two reciprocations of the needle bar (5).

  A needle plate (10) having a needle insertion hole (9) is disposed on the table (1) corresponding to the raising / lowering region of the needle (6). A pair of loopers (11) and (12) are arranged on the left and right sides of the needle plate (10) in a state where the loopers (11) and (12) can be withdrawn in the front-rear direction. A thread blade (13) is disposed between the pair of loopers (11), (12) and the lower surface of the needle plate (10). This thread cutter (13) is configured such that one of the threads (T) positioned on the opposite surface side of the first looper (11) positioned on the left side and the second looper (12) positioned on the right side is replaced with the other thread side. It acts to move to. Then, the thread tying mechanism (14) is arranged between the thread saw blade (13) and the pair of loopers (11) and (12) in a state where the tip part can enter, and the thread tying mechanism (14) is disposed inside the thread tying mechanism (14). Install the thread trimming knife (15) so that it can be moved back and forth, and place the thread clamp needle (16) in a state where it can be moved back and forth with respect to the thread ring formed at the tip of the thread knotting mechanism (14). A second thread trimming knife (17) is arranged on the lower side of the plate (10) so as to be able to withdraw and retract along the needle plate (10).

  Reference numeral (18) in the figure is a presser plate for pressing the sewing product (C) against the needle plate (10) so as to prevent it from moving, and (19) is a holder for temporarily holding the yarn end.

This automatic binding and knotting machine performs closed knotting in the steps shown in FIGS.
That is, the first looper (11) enters the loop of the first stitch formed through the workpiece (C) and below the needle plate (10), and the loop of the first stitch is moved by the first looper. To capture. (See Figure 3)

  When the first stitch is removed, the thread receiving spring (20) is brought into contact with the side surface of the first looper (11) to hold the thread (T), thereby holding the thread (T) and the first looper (11 ) Is moved downward by a predetermined distance. On the other hand, when the needle (6) that has moved upward and has come out of the sewing product (C) reaches the vicinity of the top dead center position, the needle bar (5) moves sideways to the position of the second needle on the right side, and the needle bar (5) Moves down and stabs the second stitch. Then, the second looper (12) enters the loop of the second needle formed on the lower side of the needle plate (10) through the second needle (6) passing through the workpiece (C), and 2 The loop of the stitch is captured by the second looper (12). (See Figure 4)

  When pulling out the second stitch, the thread stitch 13 enters between the pair of second stitches and brings the second stitch left side thread into a state along the first stitch. (See Figure 5)

  Next, the thread knotting mechanism (14) enters between the lower surface of the needle plate (10) and the loopers (11) (12), and the first and second stitches are positioned along each other. 2 is wound around the tip of the yarn knotting mechanism (14). (See Figure 6)

  From the inside of the thread knotting mechanism (14) with two threads wrapped around the tip, the thread trimming knife (15) incorporated in this thread knotting mechanism (14) advances and captures the two threads. The thread trimming knife (15) retreats into the thread knotting mechanism (14) while catching the thread, and cuts the tip side portion of the thread that is gripped during the retraction operation. (See Figure 7)

  Next, the thread clamp needle (16) is advanced, the thread loop formed by winding the thread around the thread knotting mechanism (14), the thread loop is moved to the needle plate (10) side, and the thread end Retract the thread knot mechanism (14) while tightening the knot with the thread trimming knife (15) and tighten the knot. (See Figure 8)

  When the thread knotting mechanism (14) retracts and the thread trimming knife (15) incorporated in the thread knotting mechanism (14) reaches the position where the thread is released, the second thread trimming knife (17) is advanced. (Refer to Fig. 9) Cut the thread at the tip side shorter than the knot with the No. 2 thread trimming knife (17), and retract the No. 2 thread trimming knife (17) and on the upper side of the needle plate (10), The thread harness (21) is activated and the remaining thread is removed from the sewing product (C), and the thread end is held by the holder (19), and the presser plate (18) is raised for one cycle. Is over. (See Figure 10)

  In the above-described embodiment, the needle bar base (4) in which the needle bar (5) is assembled so as to be movable up and down is arranged at the tip of the arm (3) so as to be movable in the horizontal direction. Since the needle (6) is exchangeably fixed to the lower end portion, the needle (6) will pierce the article to be sewn (C) vertically, and 1 on the lower side of the needle plate (10). The distance between the needle thread and the second needle thread can be set narrow, and the position where the needle tip reaches can be kept close to the sewing center. It becomes possible to arrange the operating area of the thread blade (13) for grouping the yarns and the position of the thread knotting mechanism (14) and the thread clamping needle (16) closer to each other. ) The occupied space in the lower part can be narrowed.

  INDUSTRIAL APPLICABILITY The present invention can be used for binding a pair of socks or gloves, labeling clothes or underwear, and attaching a price tag.

It is a schematic perspective view which shows the upper mechanism of an automatic binding machine. It is a taking-out front view of the principal part. It is a figure which shows the 1st procedure of a binding process. It is a figure which shows the 2nd procedure of a binding process. It is a figure which shows the 3rd procedure of a binding process. It is a figure which shows the 4th procedure of a binding process. It is a figure which shows the 5th procedure of a binding process. It is a figure which shows the 6th procedure of a binding process. It is a figure which shows the 7th procedure of a binding process. It is a figure which shows the 8th procedure of a binding process.

Explanation of symbols

3 ... arm, 5 ... needle bar, 6 ... needle, 10 ... needle plate, 11/12 ... looper (11 ... first looper, 12 ... second looper), 13 ... thread cutter, 14 ... thread knotting mechanism, 15 ... thread cut knife, 16 ... thread clamp needle, 17 ... second thread trimming knife, T ... thread.

Claims (1)

A needle bar (5) with a needle (6) attached to the tip is arranged on one end of the arm (3) so that it can be moved up and down and translated in the horizontal direction. The loopers (11) and (12) are arranged so that the first looper (11) and the second looper (12) face each other between the pair of loopers (11) and (12) and the lower surface of the needle plate (10). A thread cutter (13) that moves one of the yarns (T) located on the surface side to the other thread side is arranged, and between this thread cutter (13) and a pair of loopers (11) (12) The thread tying mechanism (14) is disposed in a state where the tip of the thread tying can be inserted into the thread tying mechanism (14), and a thread cutting knife (15) is movably mounted inside the thread tying mechanism (14) so as to be movable back and forth. ) Place the thread clamp needle (16) in a state where it can be withdrawn from and retracted from the thread ring formed at the tip of An automatic binding and knotting machine in which a second thread trimming knife (17) is placed in the state.

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