阅读说明：本技术 用于缝纫残线的自动化剪切装置及其输气结构 (Automatic shearing device for sewing residual thread and gas transmission structure thereof ) 是由 林聖智 鄭兆閔 游仁亨 于 2020-04-01 设计创作，主要内容包括：本申请实施例提供一种用于缝纫残线的自动化剪切装置及其输气结构,该自动化剪切装置包括输气结构、致动器及切刀结构,输气结构包括壳盖,在壳盖内部设有输气管,输气管包括吸气段及输送段,并在壳盖开设有连通吸气段和输送段的进气孔及连通输送段的排气孔,在吸气段远离输送段的端部具有吸入口；致动器固定在壳盖内；切刀结构设置在致动器的上方,切刀结构包括刀座、固定刀及与固定刀配合剪切的活动刀,其中,吸入口形成在固定刀和活动刀的剪切处的下方位置。借此,可节省人力的作业成本及提高生产效能。(The embodiment of the application provides an automatic shearing device for sewing a residual thread and an air conveying structure of the automatic shearing device, the automatic shearing device comprises an air conveying structure, an actuator and a cutter structure, the air conveying structure comprises a shell cover, an air conveying pipe is arranged in the shell cover, the air conveying pipe comprises an air suction section and a conveying section, an air inlet hole communicated with the air suction section and the conveying section and an air exhaust hole communicated with the conveying section are formed in the shell cover, and a suction inlet is formed in the end part, far away from the conveying section, of the air suction section; the actuator is fixed in the shell cover; the cutter structure is arranged above the actuator and comprises a cutter holder, a fixed cutter and a movable cutter which is matched with the fixed cutter for shearing, wherein the suction inlet is formed at the lower position of the shearing position of the fixed cutter and the movable cutter. Therefore, the labor cost can be saved and the production efficiency can be improved.)

1. An automated cutting device for sewing remnant thread, comprising:

the air conveying structure comprises a shell cover, wherein an air conveying pipe is arranged in the shell cover, the air conveying pipe comprises an air suction section and a conveying section communicated with the air suction section, an air inlet communicated with the air suction section and the conveying section and an air exhaust communicated with the conveying section are formed in the shell cover, and a suction inlet is formed in the end part, far away from the conveying section, of the air suction section;

an actuator fixed in the housing cover; and

and the cutter structure is arranged above the actuator and comprises a cutter seat, a fixed cutter fixedly arranged on the cutter seat and a movable cutter driven by the actuator and matched with the fixed cutter for shearing, wherein the suction inlet is formed at the position below the shearing position of the fixed cutter and the movable cutter.

2. The automatic trimming apparatus for sewing remnant lines as claimed in claim 1, wherein the housing cover is provided with a carrying seat, the actuator is fixed on the carrying seat, the actuator has a transmission shaft and a driving gear fixed on the transmission shaft, the cutter structure further comprises a sector gear connected with the movable cutter and driven by the driving gear in an intermeshing manner.

3. The automatic trimming apparatus for sewing remnant wire according to claim 2, wherein the cutter structure further comprises a shaft seat fixed to the actuator, a plurality of positioning ribs are provided inside the housing cover and on the outer periphery of the air duct, and the cutter seat is erected between the positioning ribs and fixed above the shaft seat.

4. The automatic cutting device for sewing remnant wire according to claim 3, wherein the movable cutter has a shaft and a blade connected to the shaft, the shaft is sequentially inserted through the cutter holder and the sector gear and rotatably pivoted to the shaft holder, the cutter holder is provided with a blade receiving groove, and the blade is received in the blade receiving groove.

5. The automatic trimming apparatus for sewing remnant lines of claim 1, further comprising a needle board holder fixed to the cutter holder and covering above the case cover.

6. The automatic trimming device for sewing remnant thread of claim 5, wherein the needle bed is provided with a fixed blade-receiving groove for receiving the fixed blade and a notch communicating with the fixed blade-receiving groove, the notch being formed at a position above the suction port.

7. The air conveying structure of the automatic shearing device is characterized by comprising a shell cover, wherein an air conveying pipe is arranged in the shell cover, the air conveying pipe comprises an air suction section and a conveying section communicated with the air suction section, the shell cover is provided with an air inlet communicated with the air suction section and the conveying section and an air exhaust hole communicated with the conveying section, and the end part of the air suction section, far away from the conveying section, is provided with a suction inlet.

8. The air delivery structure of an automated shearing apparatus as recited in claim 7, wherein said air suction segment is a passive air suction channel.

9. The air conveying structure of an automatic shearing device as claimed in claim 7, wherein the housing cover and the air conveying pipe are integrally formed, and a plurality of reinforcing ribs and a plurality of positioning ribs are arranged inside the housing cover and on the outer periphery of the air conveying pipe.

10. The air delivery structure of an automatic shearing apparatus as recited in claim 7, wherein a joint is formed at a position corresponding to said air discharge hole, said joint being formed at a side of said housing cover.

Technical Field

The application relates to the technical field of sewing machines, in particular to an automatic shearing device for sewing residual threads and an air conveying structure thereof.

Background

The sewing machine is classified into two types, which are a Lock sewing (Lock sewing) and a Chain sewing (Chain sewing) in which a sewing portion of a fabric is fed along a sewing direction of an upper surface of a needle plate, a stitch is formed under the needle plate by at least one needle that holds a needle thread and moves up and down, the stitch is caught by advancing a hook that performs a forward and backward movement in a direction substantially orthogonal to a vertical movement path of the needle, and the caught stitch is looped (looped) with other threads by the hook thread held by the hook, thereby forming a stitch of the Chain sewing at the sewing portion of the fabric.

The chain seam is mainly applied to decorative sewing of underwear, lappets, sleeves and the like, in order to avoid the loosening of the sewing thread, when the chain seam is sewn on the upper surface and the lower surface of a cloth, the length of the chain seam is far longer than that of the cloth, the cloth is exposed outside to form sewing residual threads, then the sewing residual threads are cut one by one through manpower by scissors, a proper length is reserved to be used as reverse folding, and finally the reverse folding sewing residual threads are sewn and fixed by a lock seam sewing machine.

However, the existing method for processing the sewing waste thread needs a lot of manpower to operate, so that the labor cost cannot be effectively reduced; in addition, the manual operation method also has a low production efficiency, and the quality stability is difficult to control and ensure.

In view of the above, the present inventors have made extensive studies to solve the above problems in combination with the application of the above teachings, and thus have an object of improvement.

Disclosure of Invention

The application aims to provide an automatic shearing device for sewing residual threads and an air conveying structure thereof, which can save labor operation cost and improve production efficiency.

In order to achieve the above object, an embodiment of the present application provides an automatic shearing apparatus for sewing a residual thread, including an air conveying structure, an actuator, and a cutter structure, where the air conveying structure includes a housing cover, an air conveying pipe is arranged inside the housing cover, the air conveying pipe includes an air suction section and a conveying section communicated with the air suction section, an air inlet communicated with the air suction section and the conveying section and an air outlet communicated with the conveying section are arranged on the housing cover, and a suction inlet is arranged at an end of the air suction section far from the conveying section; the actuator is fixed in the shell cover; the cutter structure is arranged above the actuator and comprises a cutter seat, a fixed cutter fixedly arranged on the cutter seat and a movable cutter driven by the actuator and matched with the fixed cutter for shearing, wherein the suction inlet is formed at the lower position of the shearing position of the fixed cutter and the movable cutter.

In order to achieve the above object, an embodiment of the present application further provides an air conveying structure of an automatic shearing apparatus, which includes a housing cover, an air conveying pipe is arranged inside the housing cover, the air conveying pipe includes an air suction section and a conveying section communicated with the air suction section, an air inlet communicated with the air suction section and the conveying section and an air outlet communicated with the conveying section are arranged on the housing cover, and a suction inlet is arranged at an end of the air suction section far away from the conveying section.

The embodiment of the application has the following beneficial effects: the air delivery pipe is hidden in the shell cover, so that the volume of the air delivery structure can be greatly reduced, and the air delivery structure is suitable for processing small pipe orifices of clothes and trousers for infants. The fixed knife is arranged in the fixed knife containing groove of the needle board seat, and the blade of the movable knife which is matched with the fixed knife for shearing can be lifted to be adjacent to the upper surface of the needle board seat, so that the sheared thread end is short, attractive and flat. The air suction section is designed as a passive air suction channel, so that the arrangement cost of an air suction device can be saved, the air suction effect of the air suction section is achieved in an air blowing mode, and the air suction device is more economical and practical in the aspects of use efficiency and the like.

Drawings

Fig. 1 is a schematic diagram of a needle board seat and the separation of each component structure according to an embodiment of the present application.

Fig. 2 is an exploded view of an automated shearing device according to an embodiment of the present application.

Fig. 3 is a schematic perspective view of a gas delivery structure according to an embodiment of the present application.

FIG. 4 is a cross-sectional view of a gas delivery structure of an embodiment of the present application.

Fig. 5 is a schematic view of an assembly of the automatic cutting device according to the embodiment of the present application applied to a sewing machine.

Fig. 6 is a combination view of the automated cutting apparatus according to the embodiment of the present application applied to another view of the sewing machine.

Fig. 7 to 13 are sectional views (a) to (b) showing the use states of the automatic cutting device according to the embodiment of the present application applied to a sewing machine.

Description of reference numerals:

10-gas transmission structure;

11-a shell cover;

12-gas conveying pipe;

121-a suction segment;

1211-suction inlet;

122-a conveying section;

13-an air intake;

14-a vent hole;

15-reinforcing ribs;

16-a positioning rib;

17-a linker;

18-a carrier seat;

20-an actuator;

21-a transmission shaft;

22-a drive gear;

30-cutter structure;

31-a tool apron;

311-blade containing groove;

32-a stationary knife;

33-a movable knife;

331-shaft;

332-a blade;

34-sector gear;

35-shaft seat;

40-needle board seat;

41-fixed cutter accommodating groove;

42-notch;

8-sewing machine;

81-arm;

82-a base;

83-air inlet pipe;

84-a wire arrangement pipe;

85-a pressing tool;

9-distributing;

91-chain suture;

92-sewing the residual thread.

Detailed Description

The following description and technical contents of the embodiments of the present application are described with reference to the accompanying drawings, which, however, are provided for reference and illustration purposes only and are not intended to limit the embodiments of the present application.

Referring to fig. 1 to 4, an embodiment of the present application provides an automatic cutting device for sewing a residual thread, which mainly includes an air feeding structure 10, an actuator 20 and a cutter structure 30.

As shown in fig. 3 and 4, the air delivery structure 10 includes a housing cover 11, which is substantially U-shaped and has a three-dimensional structure, an air delivery pipe 12 is disposed inside the housing cover 11, the air delivery pipe 12 mainly includes an air suction section 121 and a conveying section 122 communicated with the air suction section 121, an air inlet 13 communicated with the air suction section 121 and the conveying section 122 and an air outlet 14 communicated with the conveying section 122 are disposed at two side edges of the housing cover 11, and an air inlet 1211 is disposed at an end of the air suction section 121 away from the conveying section 122.

The suction segment 121 is not formed by suction using a suction device, but is formed by blowing gas from the gas inlet 13, passing through the delivery segment 122, and then outputting the gas from the gas outlet 14, and in the process of flowing the gas, the gas in the suction segment 121 is carried away by the gas in the delivery segment 122, so that a passive suction channel is formed in the suction segment 121.

Further, the housing cover 11 and the air pipe 12 may be integrally formed, and a plurality of reinforcing ribs 15 and a plurality of positioning ribs 16 are provided inside the housing cover 11 and on the outer periphery of the air pipe 12. In addition, a contact 17 is formed at a position corresponding to the exhaust hole 14, and the contact 17 is formed at a side of the case cover 11. A load bearing seat 18 is provided at the bottom of the case cover 11.

The actuator 20 can be fixed in the housing cover 11, and can be an electric cylinder, a pneumatic cylinder or other actuating elements, in this embodiment, a pneumatic cylinder, which is locked on the bearing seat 18 by a screw fastening element such as a screw, the actuator 20 has a transmission shaft 21 and a driving gear 22 fixed on the transmission shaft 21.

The cutter structure 30 is disposed above the actuator 20 and formed in the inner space of the housing cover 11, and the cutter structure 30 mainly includes a cutter holder 31, a fixed cutter 32, a movable cutter 33, a sector gear 34 and a shaft seat 35; the tool holder 31 is installed between the positioning ribs 16 and locked above the shaft seat 35 by a screw fastener, and a blade receiving slot 311 is formed at the upper portion of the tool holder 31.

The fixed knife 32 is locked on the knife holder 31 through a screw element, the shaft seat 35 is locked on the actuator 20 through a screw 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 through the knife holder 31 and the sector gear 34 and is rotatably pivoted with the shaft seat 35, the sector gear 34 can be in meshed transmission with the driving gear 22, the blade 332 can be accommodated in the blade accommodating groove 311 and formed below the fixed knife 32, and after being transmitted by the driving gear 22 through the sector gear 34, the shaft 331 is rotated to drive the blade 332 to be matched with the fixed knife 32 for shearing.

Wherein the suction inlet 1211 of the suction segment 121 may be formed at a position below a cutting point of the blades 332 of the stationary blade 32 and the movable blade.

Further, the automatic cutting device for sewing residual thread according to the embodiment of the present application further includes a needle plate seat 40 that can be fastened to the cutter seat 31 through a screw fastening element and covers the upper portion of the housing cover 11, the needle plate seat 40 is provided with a fixed blade receiving slot 41 for receiving the fixed blade 32 and a notch 42 communicating with the fixed blade receiving slot 41, and the notch 42 can be formed at a position right above the suction port 1211.

Referring to fig. 5 and 6, the automatic cutting device for sewing a residual thread according to the embodiment of the present application may be installed on a sewing machine 8, the sewing machine 8 has a machine arm 81 and a base 82, the automatic cutting device may be installed at a front position of the base 82 and is communicated with the air inlet 13 through an air inlet pipe 83, a thread discharging pipe 84 is connected to the joint 17 and is communicated with the air outlet 14, and the sewing machine 8 further includes a presser 85 and other related devices.

Referring to fig. 7 to 10, in operation, the cloth 9 is placed on the needle board base 40, the cloth 9 has a chain stitch line 91 and a sewing residual line 92 extending from the chain stitch line 91 and protruding to the outside of the cloth 9, the sewing residual line 92 is aligned with the notch 42 (as shown in fig. 7), and after the operating pedal is stepped on (not shown), the presser 85 moves downward and presses the cloth 9 (as shown in fig. 8), while the actuator 20 is not actuated, the driving gear 22 and the sector gear 34 maintain a meshed state, and the blade 332 of the movable knife 33 is located in the blade accommodating groove 311 and is disposed at a side away from the fixed knife 32 (as shown in fig. 9 and 10).

As shown in fig. 11 to 13, the air is supplied to the air inlet 13 through the air inlet pipe 83, and after the air flows through the air supply section 122, a passive air suction channel is formed inside the air suction section 121, so that the sewing residual thread 92 is sucked into the air suction section 121 from the suction opening 1211; the driving gear 22 of the actuator 20 drives the sector gear 34 to rotate, so that the shaft 331 of the movable knife 33 rotates along with the sector gear 34, and drives the blade 332 and the fixed knife 32 to cut the residual sewing thread 92 together, the cut residual sewing thread 92 is discharged from the conveying section 122 along the thread discharging pipe 84, the uncut residual sewing thread 92 drags the cloth 9 toward the needle plate and the needle bar through the presser 85, at this time, the uncut residual sewing thread 92 is folded under the cloth 9, and finally the uncut residual sewing thread 92 is fixed under the cloth 9 through the sewing.

In summary, the automatic cutting device for sewing residual thread and the air delivery structure thereof according to the embodiment of the present application can achieve the expected use purpose, solve the problems in the prior art, and completely meet the requirements of the patent application due to the novelty and the advancement, so that the application is proposed according to the patent law, and the examination and the authorization are given to ensure the rights of the inventor.