TWM598317U - Automatic cutting device for sewing residual thread and its gas transmission structure - Google Patents

Abstract

This model relates to an automatic shearing device for sewing residual threads. It includes an air delivery structure, an actuator and a cutter structure. The air delivery structure includes a shell cover. An air delivery tube is arranged inside the shell cover. The air delivery tube includes an air suction Section and conveying section, and the housing cover is provided with an air inlet connecting the suction section and the conveying section and an exhaust hole communicating with the conveying section. There is a suction port at the end of the suction section away from the conveying section; the actuator is fixed in Inside the shell cover; the cutting knife structure is arranged above the actuator, the cutting knife structure includes a knife seat, a fixed knife and a movable knife that cooperates with the fixed knife to cut, wherein the suction port is formed at the cutting position of the fixed knife and the movable knife The position below. In this way, labor cost can be saved and production efficiency can be improved.

Description

Automatic shearing device for sewing residual thread and its gas transmission structure

This model relates to a sewing machine technology, in particular to an automatic cutting device for sewing residual thread and its air delivery structure.

Sewing machines are classified according to the form of sewing, which can be roughly divided into two categories: Lock Stitching and Chain Stitching. Chain stitching is to sew the sewing part of the fabric along the upper surface of the needle plate on the one hand. Feeding in the direction of travel, on the other hand, by holding the needle thread and moving up and down at least one needle to form a needle loop under the needle plate, and perform the forward and retreat movement in a direction substantially orthogonal to the needle up and down movement path Before the thread hook, the needle thread loop is captured, and the caught needle thread loop is looped with other threads by the thread hook thread held by the thread hook, thereby forming the stitches of the chain stitch in the sewing part of the cloth.

Among them, chain stitches are mostly used in decorative sewing such as underwear, plackets, sleeves, etc., and in order to avoid the loosening of the stitches, the length of the chain stitches when sewing on the upper and lower surfaces of the fabric will be much longer than the length of the fabric. And the fabric is exposed to form a sewing residual thread, and then the sewing residual thread is cut one by one with scissors by human power, and a suitable length is reserved for the reflex, and finally the lock stitch sewing machine is used to fold the aforementioned reflex Sewing residual thread to be sewn fixed.

However, the existing methods of handling residual sewing threads require a lot of manpower to perform operations, which leads to an ineffective reduction in labor costs. In addition, the aforementioned manpower operation method also appears to be quite low in production efficiency and stable in quality. Sex is more difficult to control and ensure.

In view of this, the creator of the new type has focused on researching and cooperating with the application of theories in order to solve the above-mentioned problems in order to solve the above problems, which has become the goal of the new type of creator's improvement.

One purpose of the present invention is to provide an automatic shearing device for sewing residual thread and its gas transmission structure, which can save labor cost and improve production efficiency.

In order to achieve the above-mentioned purpose, the present invention provides an automatic cutting device for sewing residual threads, which includes an air delivery structure, an actuator, and a cutting knife structure. The air delivery structure includes a shell cover, and an inside of the shell cover is provided. There is an air pipe, the air pipe includes a suction section and a conveying section connected to the suction section, and the shell cover is provided with an air inlet that communicates the suction section and the conveying section and the conveying section An exhaust hole, with a suction port at the end of the suction section away from the conveying section; the actuator is fixed in the housing cover; the cutter structure is arranged above the actuator, the cutter structure It includes a knife holder, a fixed knife fixed on the knife holder, and a movable knife driven by the actuator and cut in cooperation with the fixed knife, wherein the suction port is formed on the fixed knife and the scissors of the movable knife The lower position of the cut.

In order to achieve the above-mentioned purpose, the present invention also provides a gas transmission structure of an automatic shearing device, which includes a shell cover, and a gas transmission pipe is arranged inside the shell cover. The gas transmission pipe includes a suction section and a suction section connected to the suction section. A conveying section, and an air inlet connecting the suction section and the conveying section and an exhaust hole connecting the conveying section are opened on the cover, and an end of the suction section away from the conveying section is provided suction point.

The new model also has the following functions. By concealing the air delivery pipe inside the shell cover, the volume of the air delivery structure can be greatly reduced, and it is suitable for the processing of small nozzles of infant clothes. The fixed knife is accommodated in the fixed knife accommodating groove of the needle plate seat, and the blade of the movable knife that is cut in cooperation with the fixed knife can be raised to be adjacent to the upper surface of the needle plate seat, so that the cut thread is short and beautiful smooth. Using the suction section as a passive suction channel design can not only omit the installation cost of the suction device, but also achieve the suction effect of the suction section by blowing air, which is more economical in terms of use efficiency.

The detailed description and technical content of the present invention are described as follows with the drawings. However, the drawings are only provided for reference and explanation, and are not intended to limit the present invention.

Please refer to FIG. 1 to FIG. 4, the present invention provides an automatic cutting device for sewing residual thread, which mainly includes an air delivery structure 10, an actuator 20 and a knife structure 30.

3 and 4, the gas transmission structure 10 includes a shell cover 11, which is roughly a U-shaped three-dimensional structure, inside the shell cover 11 is provided with a gas pipe 12, the gas pipe 12 mainly includes a suction section 121 and A conveying section 122 communicating with the suction section 121, and an air inlet 13 connecting the suction section 121 and the conveying section 122 and an exhaust hole 14 communicating with the conveying section 122 are opened at two side positions of the housing cover 11. There is a suction port 1211 at the end of the suction section 121 away from the conveying section 122.

The suction section 121 is not formed by using a suction device for suction. Instead, gas is blown in from the intake hole 13 and then output from the exhaust hole 14 through the conveying section 122. During the aforementioned gas flow , The gas inside the suction section 121 is taken away by the gas in the aforementioned conveying section 122, thereby forming a passive suction channel inside the suction section 121.

Further, the shell cover 11 and the gas pipe 12 are formed integrally, and a plurality of reinforcing ribs 15 and a plurality of positioning ribs 16 are provided in the shell cover 11 and the outer periphery of the gas pipe 12. In addition, a joint 17 is formed at a position corresponding to the vent hole 14, and the joint 17 is formed at the side of the cover 11. In addition, a bearing seat 18 is provided at the bottom of the cover 11.

The actuator 20 is fixed in the housing cover 11, and it can be an electric cylinder, a pneumatic cylinder or other actuating elements. This embodiment is a pneumatic cylinder, which is locked on the aforementioned bearing by screws and other screw elements. On the seat 18, the actuator 20 has a transmission shaft 21 and a driving gear 22 fixedly connected to the transmission shaft 21.

The cutter structure 30 is arranged above the actuator 20 and formed in the inner space of the housing cover 11. The cutter structure 30 mainly includes a cutter seat 31, a fixed knife 32, a movable knife 33, a sector gear 34 and a shaft The seat 35; the knife seat 31 is erected between the aforementioned positioning ribs 16 and is locked above the shaft seat 35 through a screw fixing element, and a blade receiving groove 311 is provided on the upper part of the knife seat 31.

The fixed knife 32 is locked on the knife holder 31 through a screw fixing element, and the shaft base 35 is locked on the actuator 20 through a screw fixing element. The movable knife 33 has a shaft 331 and a blade 332 connected to the end of the shaft 331 , The shaft 331 sequentially penetrates the blade holder 31 and the sector gear 34 and is pivotally connected to the shaft holder 35 rotatably. The sector gear 34 meshes with the drive gear 22 for transmission. The blade 332 is accommodated in the aforementioned blade accommodating groove 311 and It is formed under the fixed knife 32 and is driven by the drive gear 22 through the sector gear 34 to rotate the shaft 331 and at the same time drive the blade 332 to cooperate with the fixed knife 32 to cut.

The suction port 1211 of the suction section 121 is formed at a position below the cutting position of the fixed knife 32 and the blade 332 of the movable knife.

Further, the automatic cutting device for sewing residual thread of the present invention also includes a needle plate seat 40, which is locked on the knife seat 31 through a screw fixing element and covers the upper part of the shell cover 11. The needle plate seat 40 is provided with A fixed knife receiving groove 41 for receiving the fixed knife 32 and a notch 42 communicating with the fixed knife receiving groove 41 are formed directly above the suction port 1211.

Please refer to Figures 5 and 6, the new automatic cutting device for sewing residual thread can be installed on a sewing machine 8. The sewing machine 8 has a machine arm 81 and a base 82, the automatic cutting device is installed Set at the front end of the base 82, and communicate with the aforementioned air inlet 13 through an air inlet pipe 83, a cable pipe 84 connects the aforementioned connector 17 and communicates with the aforementioned air outlet 14, the sewing machine 8 also includes a presser 85 and others Related devices.

Please refer to Figures 7 to 10, during operation, a cloth 9 is placed above the needle plate seat 40. The cloth 9 has a chain stitch 91 and a chain stitch 91 extending from the chain stitch 91 and protruding to the outside of the cloth 9. Sewing residual thread 92, position the sewing residual thread 92 at the position of the notch 42 (as shown in Figure 7), after stepping on the operating pedal (not shown in the figure), the presser 85 will move downward and press the fabric 9 (as shown in Figure 8) (Shown), the actuator 20 has not actuated at this time, the drive gear 22 and the sector gear 34 maintain a meshing state, and the blade 332 of the movable knife 33 is located in the blade pocket 311 and deviated from the side of the fixed knife 32. (As shown in Figure 9 and Figure 10).

Please refer to Figures 11 to 13, the air is delivered to the air inlet 13 through the air inlet pipe 83. After the air flows through the conveying section 122, a passive air suction channel is formed inside the air suction section 121, thereby sewing The residual thread 92 is sucked into the suction section 121 from the suction port 1211; the sector gear 34 is driven to rotate through the drive gear 22 of the actuator 20, which will make the shaft 331 of the movable knife 33 follow the sector gear 34 to rotate and drive the blade 332 The sewing residual thread 92 is cut together with the fixed knife 32, the sewing residual thread 92 after being cut will be discharged from the conveying section 122 along the direction of the arranging pipe 84, and the uncut sewing residual thread 92 will pass through the pressing tool 85. Bring the fabric 9 to the direction of the needle plate and needle bar. At this time, the sewing residual thread 92 that has not been cut will be folded under the fabric 9 along the way, and finally the sewing residual that has not been cut is removed by sewing. The thread 92 is fixed under the cloth 9.

In summary, the new type of automatic shearing device for sewing residual thread and its air delivery structure can indeed achieve the expected purpose of use, and solve the lack of conventional knowledge, and because of its novelty and progress, it is fully in line with the new For patent application requirements, an application is filed in accordance with the Patent Law. Please check and grant the patent in this case to protect the rights of the creator of the new type.

10: Gas transmission structure

11: Shell cover

12: Air pipe

121: Inspiratory section

1211: suction port

122: Conveying section

13: Air intake

14: Vent

15: reinforcement ribs

16: positioning rib

17: Connector

18: bearing seat

20: Actuator

21: drive shaft

22: drive gear

30: Cutter structure

31: knife holder

311: blade pocket

32: fixed knife

33: active knife

331: Axle

332: Blade

34: sector gear

35: Axle seat

40: Needle plate seat

41: Fixed knife pocket

42: gap

8: Sewing machine

81: Arm

82: Base

83: intake pipe

84: cable pipe

85: Press tool

9: Cloth

91: chain stitch

92: Sewing residual thread

Figure 1 is a schematic diagram of the separation of the needle plate base of the present invention and each component structure.

Figure 2 is an exploded view of the new automatic shearing device.

Figure 3 is a perspective view of the gas delivery structure of the present invention.

Figure 4 is a cross-sectional view of the gas transmission structure of the present invention.

Figure 5 is a schematic diagram of the new automatic shearing device applied to the sewing machine assembly.

Figure 6 is another perspective view of the combination of the new automatic cutting device applied to the sewing machine.

Figures 7 to 13 are cross-sectional views of the new automatic shearing device applied to the sewing machine (1) to (7).

10: Gas transmission structure

11: Shell cover

20: Actuator

30: Cutter structure

31: knife holder

311: blade pocket

32: fixed knife

33: active knife

40: Needle plate seat

41: Fixed knife pocket

42: gap

Claims (10)

An automatic cutting device for sewing residual thread, including: A gas transmission structure includes a shell cover, a gas pipe is arranged inside the shell cover, the gas pipe includes a suction section and a conveying section connected to the suction section, and the housing cover is provided with the suction section Section and an air inlet of the conveying section and an air vent communicating with the conveying section, with a suction port at the end of the suction section away from the conveying section; The actuator is fixed in the cover; and The cutting knife structure is arranged above the actuator. The cutting knife structure includes a knife seat, a fixed knife fixed on the knife seat, and a movable knife driven by the actuator and cooperating with the fixed knife for cutting , Wherein the suction port is formed at a position below the shearing point of the fixed knife and the movable knife. The automatic cutting device for sewing residual thread according to claim 1, wherein the shell cover is provided with a bearing seat, the actuator is fixed on the bearing seat, and the actuator has a transmission shaft and fixedly connected to the bearing seat. A drive gear of the transmission shaft, the cutter structure further includes a sector gear, and the sector gear train is connected to the movable knife and meshes with the drive gear for transmission. The automatic cutting device for sewing residual thread according to claim 2, wherein the cutter structure further includes a shaft seat, the shaft seat is fixed on the actuator, in the housing cover and the outer circumference of the air pipe The edge is provided with a plurality of positioning ribs, and the tool seat is erected between the positioning ribs and fixed above the shaft seat. The automatic cutting device for sewing residual thread according to claim 3, wherein the movable cutter has a shaft and a blade connected to the shaft, and the shaft passes through the cutter seat and the sector gear in sequence and can The shaft seat is pivotally connected in rotation, and the knife seat is provided with a blade pocket, and the blade is accommodated in the blade pocket. The automatic cutting device for sewing residual thread as described in claim 1, further comprising a needle plate seat fixed on the knife seat and covering the upper part of the shell cover. The automatic cutting device for sewing residual thread according to claim 5, wherein the needle plate seat is provided with a fixed knife receiving slot for the fixed knife to accommodate and a notch communicating with the fixed knife receiving slot, the The notch is formed at a position above the suction port. A gas transmission structure of an automatic shearing device includes a shell cover, and a gas transmission pipe is arranged inside the shell cover. The gas transmission pipe includes an air suction section and a conveying section connected to the air suction section, and is provided in the housing cover There is an air inlet hole connecting the suction section and the conveying section and an exhaust hole communicating with the conveying section, and a suction port is arranged at the end of the suction section away from the conveying section. The gas transmission structure of the automatic shearing device according to claim 7, wherein the suction section is a passive suction channel. The gas transmission structure of an automatic shearing device according to claim 7, wherein the casing cover and the gas transmission pipe are integrally formed, and a plurality of reinforcing ribs and a plurality of positioning ribs are provided inside the casing cover and the outer periphery of the gas transmission pipe . According to the gas delivery structure of the automatic shearing device according to claim 7, wherein a joint is formed at a position corresponding to the vent hole, and the joint is formed at the side of the cover.

Images