TWI640668B - Sewing machine thread cutting device with movable suction pipe - Google Patents

Abstract

A sewing machine tangential device with a movable suction pipe, the tangential device is applied to a sewing machine, the sewing machine comprises a working platform, a working arm corresponding to the working platform and a sewing tool set mounted on the working arm The tangential device has a driver mounted on the arm, a tangential cutter mounted on the actuator, and a suction tube mounted on the actuator. When the sewing tool set pulls a wire on the surface of the work platform to perform a sewing operation, the actuator moves the cutter and the suction pipe together, so that the wire cutter cuts the wire while the wire is sucked The tube is moved with the tangential cutter to approach and absorb the cut portion of the wire, thereby solving the problem that the fixed suction pipe cannot approach and absorb the cut portion of the wire in the conventional embodiment.

Description

Sewing machine thread cutting device with movable suction pipe

The invention relates to a sewing machine tangential device with a movable suction tube, in particular to a tangential device capable of moving a suction tube with a tangential cutter to surely absorb a cut portion of the wire.

With the rapid development of today's technology, the development of various technical fields has gradually become highly specialized. As far as the technical field of the sewing machine is concerned, the sewing machine is distinguished by a plurality of different types of machines depending on the execution function, such as a sewing machine that specializes in the hem and a sewing machine for the quilting operation. Among them, from the use of the sewing machine, it can be found that since the sewing machine has the action of cutting the wire during the sewing operation, most of the sewing machines today are provided with an intake pipe that absorbs the wire.

In the case of the Republic of China Patent No. M373930, the sewing machine of the sewing machine has a sewing tool set, a first cutting knife, a second cutting knife, and a first sewing machine. An air suction pipe, a second suction pipe, a clamping device and a pneumatic actuation mechanism. During the use of the sewing machine, the sewing tool set will sew a wire to two fabrics to perform the seaming operation on the two fabrics. On the other hand, the first cutter cuts the two fabrics, the second cutter cuts the wire, the first suction pipe absorbs the cut portion of the two fabrics, and the second suction pipe Will cut the cut portion of the wire.

Further, the Patent No. I523988 of the Republic of China Patent Publication No. I523988 discloses a sewing machine having a dust suction device including a plurality of feed teeth, a cloth cutting device, a first suction pipe, a second suction pipe, and a a first air ejecting pipe and a second air ejecting pipe. When the sewing machine is actually used, the cloth cutting device can cut the cloth, and the first suction pipe and the second suction pipe can suck the cut portion of the cloth.

In addition, the Patent No. M332686 of the Republic of China Patent Publication No. M332686 discloses a guiding device for a sewing machine, the guiding device comprising a base, a needle holder and a head, the head being provided with a presser device, The needle device and a cloth edge shearing device are provided with an air suction pipe and a blowing pipe. When the guiding device is actually used, the blowing pipe can assist in blowing the waste cloth edge to facilitate the suction pipe to absorb the waste cloth edge.

However, from the technical contents of the above three patent cases, it can be found that the techniques disclosed in the I523988 and M332686 patents are not used for absorbing the cut portion of the wire. In addition, the technique of the M373930 patent is such that the second suction pipe is easily fixed to the side of the sewing machine, so that the second suction pipe can easily absorb the wire due to the falling position not close to the cut portion of the wire. The cut off part.

The main object of the present invention is to solve the problem that the intake pipe cannot reliably absorb the cut portion of the wire in the conventional embodiment.

In order to achieve the above object, the present invention provides a sewing machine tangential device with a movable suction tube, which is applied to a sewing machine, which includes a working platform, a working arm corresponding to the working platform, and a mounting arm. And a sewing tool set for pulling a wire to perform a sewing operation on the working platform, wherein the wire cutting device has a belt device mounted on the arm, a tangential cutter mounted on the belt, and a a wire suction tube mounted on the actuator, the wire cutting device having a first state in which the actuator is not activated to form a gap between the wire cutter and the work platform, and activating the wire cutter to drive the wire cutter The suction tube is displaced in the direction of the work platform to cause the suction tube to absorb the second state of the wire cut portion.

In one embodiment, the actuator has a bushing, a shaft mounted on the bushing, and a seat body disposed on the shaft and provided by the suction pipe and the wire cutter. Wherein, the sleeve is assembled with the shaft to form a solenoid valve or a pneumatic cylinder.

In one embodiment, the work platform has a horizontal plane facing the arm and a vertical plane extending from the horizontal plane to be parallel to the tangential cutter and in surface contact with the tangential cutter in the second state.

In one embodiment, the suction tube has a flat mouth that faces the tangential cutter and is flat.

In an embodiment, the suction tube has a flow guiding portion disposed at the body of the suction tube and connected to a gas conveying device.

Through the above embodiments, the present invention has the following characteristics as compared with the conventional ones:

According to the present invention, the wire cutter and the suction pipe are both mounted on the carrier, so that the wire cutter can move the wire cutter to move close to and absorb the wire while the wire cutter cuts the wire. The cut portion is thereby solved by the problem that the fixed intake pipe cannot be brought close to the wire cut portion for absorption in the conventional embodiment.

The detailed description and technical contents of the present invention are described as follows:

Referring to FIG. 1 to FIG. 5, the present invention provides a sewing machine tangential device with a movable suction tube, and the tangential device can be used with a sewing machine 1. The sewing machine 1 includes a working platform 11 , an arm 12 , and a sewing tool set 13 . The arm 12 is mounted on the working platform 11 and is disposed corresponding to the working platform 11 to face each other. The sewing tool set 13 is mounted on the arm 12 and extends to the surface of the work platform 11. Specifically, the sewing machine 1 can perform a sewing operation through the work platform 11, the arm 12, and the sewing tool set 13, and the sewing machine 1 can be any type of sewing machine. On the other hand, referring to FIG. 4 and FIG. 5 together, the tangential device has a driver 14, a wire cutter 15 and a suction pipe 16, which is mounted on the arm 12 and is not located in the work. Directly above the platform 11, the tangential cutter 15 is mounted on the actuator 14 and is substantially parallel to the sides of the working platform 11 and is substantially in the same line. The suction tube 16 is mounted on the actuator 14 and is not located there. Directly above the work platform 11. The actuator 14 can perform a telescopic movement to simultaneously lift and lower the tangential cutter 15 and the suction tube 16. In one embodiment, the actuator 14 has a sleeve 141, a shaft 142, and a body 143. The shaft 142 is disposed in the sleeve 141 and extends out of the sleeve 141. The base 143 is disposed on the sleeve 141. The shaft 142 is exposed at one end of the sleeve 141 and is provided for the tangential cutter 15 and the suction tube 16, and the sleeve 141 can drive the shaft 142 to perform a telescopic movement. The shaft 142 can be used for expansion and contraction. The tangential cutter 15 and the suction pipe 16 are lifted and lowered by the seat body 143. Specifically, the sleeve 141 and the shaft 142 can be assembled to form a solenoid valve or a pneumatic cylinder. Thus, the solenoid valve or the pneumatic cylinder can be operated between the sleeve 141 and the shaft 142. The principle is such that the sleeve 141 drives the shaft 142 to perform a telescopic movement. </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; The technical contents of the TW I383079 and TW I464311 patents are incorporated.

The basic embodiment of the sewing machine 1 and the tangential device can be clearly understood from the above paragraphs. Next, the present invention will further explain the use of the sewing machine 1 and the tangential device and the possible implementations that may occur during use. Referring to FIG. 1 to FIG. 5, during the use of the sewing machine 1 and the thread cutting device, the working platform 11 can be provided with two fabrics (not shown) and a wire 2, which can be used for the sewing tool set 13 2 sewing the two fabrics to perform sewing work on the two fabrics. In detail, when the sewing tool set 13 is performing the sewing operation, the portion of the wire 2 that is not sewn to the two fabrics protrudes outside the working platform 11 and is located below the actuator 14 (see FIG. 4). In addition, the actuator 14 is switched between a first state and a second state to telescope the tangential cutter 15 and the suction tube 16. In the first state, as shown in FIG. 4, a gap 17 is formed between the tangential cutter 15 and the work platform 11, that is, the tangential cutter 15 is not in contact with the work platform 11. In the second state, the squeegee 15 drives the tangential cutter 15 to move downward together with the suction tube 16, and the tangential cutter 15 cuts the wire 2 during the descending process. The suction tube 16 is cut. A suction airflow is generated to absorb the cut portion of the wire 2. Specifically, the working platform 11 can have a horizontal surface 111 facing the arm 12 and a vertical surface 112 bent by the horizontal plane 111. The vertical surface 112 is parallel to the tangential cutter 15, and the tangential cutter 15 is In the second state, the vertical surface 112 is in surface contact. The vertical surface 112 may be a cutter surface that is cut with the wire cutter 2 to cut the wire 2, and the work platform 11 may be provided with a casing (not shown) covering the vertical surface 112. In addition, when the squeegee 15 is lowered without interlocking the tangential cutter 15, the tangential cutter 15 can perform rotational adjustment and lateral position adjustment at a horizontal level substantially in the same longitudinal plane as the vertical plane 112, with respect to the tangential cutter 15 For a technique of adjusting the position, please refer to the TW 201643293 patent file previously filed by the applicant of the present application. On the other hand, as shown in FIG. 3 to FIG. 5, the suction tube 16 can have a flow guiding portion 161 disposed at the body of the suction tube 16, and a suction tube 16 disposed toward the cutting thread cutter. And a flat-shaped nozzle 162. The flow guiding portion 161 defines a guide channel (not shown) opposite to the nozzle 162 in the inside of the suction tube 16, and the guiding portion 161 can be connected to a gas delivery device (not shown) for the gas delivery device to inject high velocity gas into the flow channel, and the suction pipe 16 can generate a suction airflow to absorb by the high velocity gas flowing in the opposite direction of the nozzle 162 The cut portion of the wire 2. Regarding the technique of how the suction tube 16 absorbs the cut portion of the wire 2, please refer to the TW M373930 patent filed by the applicant of the present application. content. In summary, since the tangential cutter 15 and the suction pipe 16 are both mounted on the actuator 14, the actuator 14 can be driven by the tangential cutter 15 to cut the wire 2 while the suction pipe 16 can be used. The tangential cutter 15 is moved to approach and absorb the cut portion of the wire 2, thereby solving the problem that the fixed suction pipe cannot be brought close to the wire cut portion for absorption in the conventional embodiment.

In addition, it should be particularly noted that the dotted line portion shown in FIG. 1 to FIG. 5 of the present invention is only for the feature portion of the actuator 14, the tangential cutter 15 and the suction tube 16 which are drawn in solid lines in the present invention. More prominently shown in Figures 1 through 5, as described herein.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

1. . . . . . . . . . . . . Sewing machine 11. . . . . . . . . . . . . Work platform 111. . . . . . . . . . . . . Water level 112. . . . . . . . . . . . . Vertical surface 12. . . . . . . . . . . . . Arm 13. . . . . . . . . . . . . Sewing tool set 14. . . . . . . . . . . . . Puller 141. . . . . . . . . . . . . Bushing 142. . . . . . . . . . . . . Shaft 143. . . . . . . . . . . . . Seat 15. . . . . . . . . . . . . Wire cutter 16. . . . . . . . . . . . . Suction tube 161. . . . . . . . . . . . . Diversion section 162. . . . . . . . . . . . . Nozzle 17. . . . . . . . . . . . . Clearance 2. . . . . . . . . . . . . Wire

Figure 1 is a perspective view of the present invention. Figure 2 is a partial perspective view of the present invention. Figure 3 is a partial exploded view of the present invention. Figure 4 is a partial side elevational view (I) of the present invention. Figure 5 is a partial side elevational view (ii) of the present invention.

Claims (6)

A sewing machine tangential device with a movable suction pipe is applied to a sewing machine. The sewing machine comprises a working platform, a working arm corresponding to the working platform, and a device mounted on the working arm and pulled by the working platform. A sewing tool set for performing a sewing operation of a wire rod, wherein: the thread cutting device has a belt mounted on the arm, a cutter cutter mounted on the belt, and a suction device mounted on the belt a wire tube having a first state in which the actuator is not actuated to form a gap between the wire cutter and the work platform, and activating the actuator to drive the wire cutter and the suction pipe toward the working platform The direction is displaced such that the suction tube absorbs the second state of the wire cut portion. The sewing machine tangential device with a movable suction tube according to claim 1, wherein the actuator has a sleeve, a shaft mounted on the sleeve, and a shaft disposed on the shaft for the suction tube and The seat body of the tangential cutter. The sewing machine tangential device with a movable suction tube according to claim 2, wherein the sleeve is assembled with the shaft to form a solenoid valve or a pneumatic cylinder. The sewing machine tangential device with a movable suction tube according to claim 1, 2 or 3, wherein the working platform has a horizontal plane facing the arm and a bend extending from the horizontal plane parallel to the tangential cutter and In the second state, a vertical surface that is in surface contact with the tangential cutter. A sewing machine tangential device having a movable suction tube according to claim 4, wherein the suction tube has a flat mouth facing the tangential cutter. The sewing machine tangential device with a movable suction tube according to claim 4, wherein the suction tube has a flow guiding portion disposed at the pipe body of the suction pipe and connected to a gas conveying device.