JP3221084U - Sewing thread cutting device having movable thread suction pipe - Google Patents

Abstract

An object of the present invention is to provide a yarn cutting device capable of reliably sucking a cut portion of a yarn by moving a yarn suction pipe along with a yarn cutting cutter.
A sewing machine provided with a movable thread suction pipe applied to a sewing machine 1 comprising a table 11, an arm 12 provided corresponding to the table, and a stitch tool set 13 attached to the arm The yarn trimming apparatus includes an actuator 14 mounted on an arm, a yarn trimming cutter 15 mounted on the actuator, and a yarn suction tube 16. When the stitching tool set pulls the thread on the table surface to perform the stitching operation, the actuator moves the thread cutting cutter, and the thread suction pipe cuts the thread simultaneously with the thread cutting cutter moving in conjunction with the thread cutting cutter. At the same time, aspirate the cut portion of the thread.
[Selected figure] Figure 3

Description

  The present invention relates to a sewing thread cutting device provided with a movable thread suction pipe, and more particularly to a thread cutting device capable of reliably sucking a cut portion of a thread by moving the thread suction pipe along with a thread cutter.

  With the advanced development of science and technology, the development of each technology field is also gradually moving towards high-level specialty. In view of the technical field of sewing machines, sewing machines are classified into many different types of machines depending on the function to be performed, such as sewing machines dedicated to hem sewing and sewing machines for patchwork operations. Among these, as can be seen from the use process of the sewing machine, the sewing machine has an operation of cutting the thread at the time of the stitching operation, so most of the present sewing machines are provided with suction pipes for sucking the thread.

  In response, Taiwan Patent Publication No. M 373 930 patent discloses a sewing machine with a flat-stitched edge cloth discharge device, said sewing machine comprising a stitch tool set, a first cutter, a second cutter, a first And a second suction pipe, a holding device, and an air pressure operating mechanism. In the process of using the sewing machine, the stitching tool set sews two cloths with a single thread to perform a flat sewing operation on the two cloths. On the other hand, the first cutter cuts the two sheets of cloth, the second cutter cuts the yarn, and the first suction pipe sucks the cut parts of the two sheets of cloth, and the second cutter The suction tube sucks the cut portion of the thread.

  Also, the Taiwan Patent Publication No. I 523988 patent discloses a sewing machine provided with a dust suction device, which sewing machine comprises a plurality of cloth feed teeth, a cloth cutting device, a first suction pipe, and a second suction pipe. And a first air jet pipe and a second air jet pipe. In the sewing machine, the cloth cutting device can cut the cloth during actual use, and the first suction pipe and the second suction pipe can suction the cut portion of the cloth.

  Taiwan Patent Publication No. M332686 patent discloses a guide device for a sewing machine, the guide device includes a machine base, a needle plate, and a sewing machine head, and the sewing machine head has a cloth pressing device, A sewing needle device and a cloth edge cutting device are provided, and the cloth edge cutting device is provided with a suction pipe and a blowout pipe. The guide device assists the blowing pipe to feed the end edge during actual use so that the suction pipe can easily suck the end edge.

  However, as can be seen from the technical content of the above three patents, none of the techniques disclosed in the I523988 and M332686 patents is for aspirating the cut portion of the yarn. In the technique described in the M373930 patent, since the second suction pipe is fixed to one side of the sewing machine, the second suction pipe is not close to the dropping position of the cut portion of the thread. , It is not possible to reliably aspirate the cut portion of the yarn.

  The main object of the present invention is to solve the problem that the suction tube in the prior embodiment can not reliably aspirate the cut portion of the yarn.

  In order to achieve the above object, the present invention provides a sewing thread cutting device provided with a movable thread suction pipe, comprising: a table, an arm provided corresponding to the table, and the arm A sewing thread cutting device provided with a movable thread suction pipe applied to a sewing machine provided with a stitch tool set mounted and capable of performing a stitching operation by pulling a thread at the table, the thread cutting device comprising: An actuator mounted on the arm, a thread cutting cutter mounted on the actuator, and a thread suction pipe mounted on the actuator, the thread cutting device activating the actuator And a first state in which a gap is formed between the thread cutting cutter and the table, and the actuator is activated to And a second state in which interlocked so that the yarn suction pipe by thread suction tube is moved in the direction of the table sucks the cutting portion of the thread, characterized in that.

  In one embodiment, the actuator comprises a sleeve, a shaft mounted on the sleeve, and a pedestal provided on the shaft and used to provide the yarn suction tube and the yarn cutter. Among them, the sleeve and the shaft are assembled as an electromagnetic valve or an air cylinder.

  In one embodiment, the table has a horizontal surface with one side facing the arm, and a bend extending from the horizontal surface and extending parallel to the thread cutter and in the second state a surface for the thread cutter And a vertical surface in contact with the

  In one embodiment, the yarn suction tube has a flat tube port facing the yarn cutter.

  In one embodiment, the yarn suction tube has a guiding portion provided at the yarn suction tube main portion and provided for connection with the air feeding device.

  According to the above embodiment, the present invention has the following advantages over the prior art.

  In the present invention, since the yarn cutting cutter and the yarn suction pipe are both mounted on the actuator, the actuator cuts the yarn at the same time as the yarn cutter cuts the yarn suction pipe along with the yarn cutting cutter. Since it moves so as to move close to each other and to work together to suction the cut portion of the yarn, the fixed suction tube in the conventional embodiment can not suction close to the cut portion of the yarn. Solve.

FIG. 1 is a schematic view of the present invention. FIG. 1 is a partial schematic view of the present invention. FIG. 1 is a partially exploded schematic view of the present invention. It is a partial side schematic diagram (one) at the time of implementation of the present invention. It is a part side schematic diagram (2) at the time of implementation of this invention.

  The detailed description and technical contents of the present invention will be described as follows in conjunction with the drawings.

  See FIGS. 1-5. The present invention provides a sewing thread cutting device provided with a movable thread suction pipe, and the thread cutting device can be used in combination with the sewing machine 1. The sewing machine 1 includes a table 11, a sewing machine arm 12, and a stitch tool set 13. The sewing machine arm 12 is mounted on the table 11 and provided corresponding to the table 11 so as to face each other. The stitch tool set 13 is mounted on the sewing machine arm 12 and extends to the surface of the table 11. Specifically, the sewing machine 1 can perform a stitching operation by the table 11, the arm 12, and the stitch tool set 13, and the sewing machine 1 can be any kind of sewing machine. Also, please refer to FIG. 4 and FIG. 5 together. The yarn cutting device comprises an actuator 14, a yarn cutting cutter 15, and a yarn suction pipe 16. The actuator 14 is mounted on the arm 12 and not directly above the table 11. The thread cutting cutter 15 is mounted on the actuator 14 and positioned substantially on the same straight line parallel to the side surface of the table 11, and the thread suction tube 16 is mounted on the actuator 14 and the table 11. It is not located directly above. Among these, the actuator 14 executes an expansion and contraction operation to interlock at the same time so that the thread cutting cutter 15 and the thread suction pipe 16 move up and down. In one embodiment, the actuator 14 comprises a sleeve 141, a shaft 142 and a seat 143, the shaft 142 being provided in the sleeve 141 and extending outside the sleeve 141. The pedestal 143 is provided at one end of the shaft 142 exposed from the sleeve 141, and is used for mounting the thread cutting cutter 15 and the thread suction tube 16. The sleeve 141 is the shaft 142. And the shaft 142 is interlocked so that the thread cutting cutter 15 and the yarn suction pipe 16 are moved up and down by the pedestal 143 at the time of expansion and contraction. Specifically, since the sleeve 141 and the shaft 142 can be assembled and configured as an electromagnetic valve or an air cylinder, the space between the sleeve 141 and the shaft 142 can be made of the electromagnetic valve or the air cylinder. According to the operating principle, the sleeve 141 drives the shaft 142 to expand and contract. For the technique of how the actuator 14 drives the shaft 142 to extend and retract through the sleeve 141, please refer to the TW I383079 and TW I464311 patents previously filed by the applicant of the present invention. Here, the present invention incorporates the technical contents of the TW I383079 and TW I464311 patents in a full text citation mode.

  In the above paragraph, the basic embodiment of the sewing machine 1 and the thread cutting device is clarified, but subsequently, in the present invention, it occurs in use process and process of using the sewing machine 1 and the thread cutting device Further possible embodiments will be described. See FIGS. 1-5. In the process of using the sewing machine 1 and the thread cutting device, two cloths (not shown) and a thread 2 can be placed on the table 11, and the stitching tool set 13 is a thread 2. The two cloths can be stitched to perform stitching on the two cloths. In detail, when the stitching tool set 13 performs a stitching operation, a portion of the thread 2 which is not sewn to the two cloths protrudes outside the table 11 and is positioned below the actuator 14 (Shown in FIG. 4), and by switching between the first state and the second state, the actuator 14 expands and contracts the thread cutting cutter 15 and the thread suction pipe 16. In the first state, as shown in FIG. 4, a gap is formed between the thread cutter 15 and the table 11, that is, the thread cutter 15 is in contact with the table 11. Absent. In the second state, the actuator 14 interlocks to move the yarn cutting cutter 15 and the yarn suction tube 16 downward and moves the yarn cutting cutter 15 while cutting the yarn 2 in the process of lowering. The yarn suction pipe 16 generates a suction air flow to suction the cut portion of the yarn 2. Specifically, the table 11 may have a horizontal surface 111 with one surface facing the arm 12 and a vertical surface 112 bent and extended from the horizontal surface 111, the vertical surface 112. Is parallel to the thread cutting cutter 15, and the thread cutting cutter 15 is in surface contact with the vertical surface 112 when in the second state. Among them, the vertical surface 112 may be a blade surface for cutting the yarn 2 in cooperation with the thread cutting cutter 15, and a casing (not shown) covering the vertical surface 112 on the table 11 Can be worn. In addition, when the actuator 14 is not interlocked to lower the thread cutting cutter 15, the thread cutting cutter 15 performs rotational adjustment and lateral position adjustment at a horizontal height to substantially adjust with the vertical surface 112. For the technique of being able to be positioned in the same longitudinal plane, and how the thread cutter 15 adjusts the position, see the TW 2016 43293 patent filed by the applicant of the present invention earlier. I want to be Here, in the present invention, the technical contents of the TW 2016 43293 patent are incorporated by a method of full text citation. Further, as shown in FIGS. 3 to 5, the yarn suction pipe 16 is provided to the guiding portion 161 provided at the main portion of the yarn suction pipe 16 and the yarn suction pipe 16 and the yarn cutting cutter 15. The flow guiding portion 161 may have a flat-shaped pipe opening portion 162, and the flow guiding portion 161 may be a flow guiding path (not shown) in the inside of the yarn suction pipe 16 facing in the opposite direction to the pipe opening portion 162. (Not shown) is formed, and the flow guiding portion 161 is connected to an air supply device (not shown) so that the air supply device can inject high-speed gas into the flow passage. The yarn suction pipe 16 can generate a suction air flow by high-speed gas flowing in the opposite direction to the pipe opening portion 162 to suction the cut portion of the yarn 2. For the technique of how the actuator 16 aspirates the cut portion of the thread 2, reference is made to the TW M 373 930 patent previously filed by the applicant of the present invention. Here, the present invention incorporates the technical contents of the TW M 373 930 patent in the form of full text citation. In summary, since both the yarn cutting cutter 15 and the yarn suction pipe 16 are attached to the actuator 14, the actuator 14 is such that the yarn suction pipe 16 is cut at the same time as the yarn cutting cutter 15 cuts the yarn 2. As it moves along with the thread cutting cutter 15 and moves close together and sucks the cut portion of the thread 2, in the fixed type suction tube in the conventional embodiment, it approaches the cut portion of the thread Solve the problem of not being able to aspirate.

  Further, to be particularly described, the broken line portions shown in FIGS. 1 to 5 of the present invention are characteristic of the actuator 14, the thread cutting cutter 15, the thread suction pipe 16, etc. It is to say that it is stated here that it is for making a part stand out in FIGS. 1 to 5. Although the present invention has been described above in detail, the above description is only one preferred embodiment of the present invention, and the scope of implementation of the present invention can not be limited by this, and the present invention is not limited. Equal changes and additions made by the claims of the utility model registration are all within the scope covered by the claims of the utility model registration of the present invention.

DESCRIPTION OF SYMBOLS 1 sewing machine 11 table 111 horizontal surface 112 vertical surface 12 arm 13 stitch tool set 14 actuator 141 sleeve 142 shaft 143 base 15 thread cutting cutter 16 thread suction pipe 161 guiding part 162 pipe port 17 gap 2 thread

Claims (4)

A movable type applied to a sewing machine comprising a table, an arm provided corresponding to the table, and a stitch tool set attached to the arm and capable of performing a stitching operation by pulling a thread at the table A sewing thread cutting device provided with a thread suction pipe, wherein
The thread cutting device includes an actuator mounted on the arm, a thread cutting cutter mounted on the actuator, and a thread suction pipe mounted on the actuator, and the thread cutting device includes: A first state in which a gap is formed between the thread cutter and the table without activating the actuator, and the thread cutter and the yarn suction tube are moved in the direction of the table by activating the actuator And a second state in which the yarn suction tube interlocks so as to suction the cut portion of the yarn.   The actuator comprises a sleeve, a shaft mounted on the sleeve, and a pedestal provided on the shaft and used to provide the yarn suction pipe and the yarn cutting cutter. A sewing thread cutting device comprising the movable thread suction pipe according to Item 1.   The table has a horizontal surface, one surface of which faces the arm, and a vertical surface which bends and extends from the horizontal surface and is parallel to the thread cutter and contacts the thread cutter in the second state. A sewing thread cutting device provided with the movable type thread suction pipe according to claim 1 or 2, characterized in that:   The movable yarn suction tube according to claim 3, characterized in that the yarn suction tube has a guiding portion provided in the yarn suction tube main portion and connected to the air feeding device. Sewing thread cutting device.