CN209923587U - An automatic thread trimming mechanism used in narrow spaces - Google Patents

Abstract

The utility model discloses an automatic thread trimming mechanism used in a narrow space, which comprises a rocker arm, a balance block, a motor, a horn tip, a thread groove, a first transmission rod, a second transmission rod, a driving bevel gear, a driven bevel gear, a transmission mechanism, a connecting mechanism, a needle plate, a cylindrical gear, a transmission gear and a guide post, wherein the balance block is fixed at one end of the rocker arm, the horn tip is arranged at the other end of the rocker arm, the motor is arranged in the rocker arm, the driving bevel gear is arranged at the output end of the motor, the first transmission rod is rotatably arranged at the side edge of the rocker arm, the driving bevel gear is arranged at the top end of the first transmission rod, and the driving bevel gear is meshed with the driving bevel gear, the automatic thread trimming mechanism has a small and exquisite integral sewing structure, is convenient for sewing in a, not only improves sewing efficiency, but also can automatically cut thread, and saves the use of inner thread.

Description

An automatic thread trimming mechanism used in narrow spaces

technical field

The utility model relates to the technical field of industrial sewing machines, in particular to an automatic thread trimming mechanism used in a narrow space.

Background technique

Industrial sewing machine is a sewing machine suitable for sewing workpieces for mass production in sewing factories or other industrial sectors. Factories that require sewing machines such as clothing, shoes and hats use industrial sewing machines. The main working principle of existing industrial sewing machines is to use a The sewing thread forms a stitch on the sewing material, so that one or more layers of sewing material are interlaced or sewed together. After the sewing is finished, the sewing thread needs to be cut by the thread trimming mechanism, and the existing thread trimming methods are all The use of finishing thread trimming has low efficiency, and it is inconvenient to cut the inner thread when sewing shoes with a narrow inner space. automatic thread trimming mechanism.

Utility model content

The purpose of the present invention is to provide an automatic thread trimming mechanism used in a narrow space, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides the following technical solutions: an automatic thread trimming mechanism used in a small space, including a rocker arm, a balance block, a motor, a horn tip, a knife groove, a first transmission rod, a second transmission rod, Drive bevel gear, drive bevel gear, driving bevel gear, driven bevel gear, transmission mechanism, connecting mechanism, needle plate, cylindrical gear, transmission gear and guide column, one end of the rocker arm is fixed with a balance block, and the other end of the rocker arm is A horn tip is installed, a motor is installed inside the rocker arm, a drive bevel gear is installed at the output end of the motor, a first transmission rod is rotatably installed on the side of the rocker arm, and a transmission bevel gear is installed at the top of the first transmission rod , and the transmission bevel gear is meshed with the drive bevel gear, the side of the rocker arm is rotatably installed with a second transmission rod, and the corresponding ends of the first transmission rod and the second transmission rod are respectively installed with a driving bevel gear and a driven bevel gear , and the driving bevel gear and the driven bevel gear are meshed and connected, a guide post is installed on one side of the tip of the horn, and the guide post is connected with the second transmission rod through a connecting mechanism, the tip of the horn is rotated and installed with a transmission gear, and the guide The column is connected with the transmission gear through a transmission mechanism. A cylindrical gear is rotatably installed inside the horn tip, and the cylindrical gear is meshed with the transmission gear. A needle plate is installed on the top of the horn tip, and the edge of the cylindrical gear is fixed at the corresponding position of the needle plate. Slots.

Preferably, the transmission mechanism includes a synchronous wheel and a synchronous belt, a synchronous wheel is installed on the end of the guide column corresponding to the end of the transmission gear shaft, and the synchronous wheel is connected by a synchronous belt.

Preferably, the transmission mechanism includes a driving gear, the driving gear is mounted on the end of the guide column, and the driving gear is in meshing connection with the transmission gear.

Preferably, the connection mechanism includes a universal joint, and the guide post and the second transmission rod are connected through the universal joint.

Preferably, the connection mechanism includes a universal transmission shaft, and the guide post and the second transmission rod are connected in a driving manner through the universal transmission shaft.

Preferably, the connecting mechanism includes a bevel gear, the corresponding ends of the guide post and the second transmission rod are both mounted with bevel gears, and the guide post and the second transmission rod are meshed and connected by the bevel gear.

Compared with the prior art, the beneficial effect of the present utility model is that the motor is turned on to drive the drive bevel gear, the first transmission rod is rotated through the transmission of the drive bevel gear, and then the first transmission rod is rotated through the transmission of the driving bevel gear and the driven bevel gear. The second transmission rod rotates, the second transmission rod rotates the guide column through the universal joint, the guide column drives the synchronous wheel to rotate, and the transmission gear rotates through the transmission of the synchronous belt. The overall sewing structure of this automatic thread trimming mechanism is compact, which is convenient for sewing work in narrow spaces. Driven by the motor, the transmission mechanism is driven to make the knife groove rotate to perform thread trimming work, which not only improves the sewing efficiency, but also has automatic thread trimming function and saves money. Use of internal lines.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the structural schematic diagram of the drive transmission mechanism of the present invention;

Fig. 3 is the structural schematic diagram of the needle plate of the present utility model;

Figure 4 is a schematic diagram of the utility model knife groove structure;

5 is a schematic diagram of the bevel gear transmission structure of the present invention;

6 is a schematic diagram of the synchronous transmission structure of the utility model;

FIG. 7 is a schematic diagram of the universal transmission structure of the utility model.

In the figure: 1, rocker arm; 2, balance weight; 3, motor; 4, horn tip; 5, knife groove; 6, first transmission rod; 7, second transmission rod; Gear; 10. Driving bevel gear; 11. Driven bevel gear; 12. Transmission mechanism; 13. Connecting mechanism; 14. Needle plate; 15. Spur gear; 16. Transmission gear; 17. Guide post; 18. Driving gear; 19. Universal joint; 20. Universal drive shaft; 21. Synchronous wheel; 22. Timing belt; 23. Bevel gear.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

1-4, the present utility model provides a technical solution: an automatic thread trimming mechanism used in a narrow space, comprising a rocker arm 1, a balance block 2, a motor 3, a horn tip 4, a knife groove 5, a first Transmission rod 6, second transmission rod 7, driving bevel gear 8, transmission bevel gear 9, driving bevel gear 10, driven bevel gear 11, transmission mechanism 12, connecting mechanism 13, needle plate 14, cylindrical gear 15, transmission gear 16 and guide column 17, one end of the rocker arm 1 is fixed with a balance block 2, and the other end of the rocker arm 1 is mounted with a horn tip 4, a motor 3 is installed inside the rocker arm 1, a drive bevel gear 8 is installed at the output end of the motor 3, and the side of the rocker arm 1 is installed A first transmission rod 6 is installed while rotating, and a transmission bevel gear 9 is installed at the top of the first transmission rod 6, and the transmission bevel gear 9 is meshed with the driving bevel gear 8. The side of the rocker arm 1 is rotated and installed with a second transmission rod 7, The corresponding ends of the first transmission rod 6 and the second transmission rod 7 are respectively installed with a driving bevel gear 10 and a driven bevel gear 11, and the driving bevel gear 10 and the driven bevel gear 11 are meshed and connected, and a guide post is installed on one side of the horn tip 4. 17, and the guide column 17 is connected with the second transmission rod 7 through the universal joint 19, the end of the horn tip 4 is rotatably installed with a transmission gear 16, and the end of the guide column 17 and the end of the shaft of the transmission gear 16 are correspondingly installed with a synchronous wheel 21, and The synchronizing wheel 21 is connected by the synchronous belt 22, the spur gear 15 is rotatably installed inside the horn tip 4, and the spur gear 15 is meshed with the transmission gear 16. The top of the horn tip 4 is installed with the needle plate 14, and the edge of the spur gear 15 corresponds to the position of the needle plate 14. A knife groove 5 is fixed.

The motor 3 is turned on to drive the drive bevel gear 8 to drive, the first drive rod 6 is rotated through the drive of the drive bevel gear 9, and then the second drive rod 7 is rotated through the drive of the drive bevel gear 10 and the driven bevel gear 11, and the second drive The rod 7 rotates the guide post 17 through the universal joint 19, the guide post 17 drives the synchronous wheel 21 to rotate, and the transmission gear 16 rotates through the transmission of the synchronous belt 22. Thread cutting work.

Example 2

Referring to FIG. 4 , the transmission mechanism 12 is replaced by the driving gear 18 for the synchronous wheel 21 and the synchronous belt 22 .

Example 3

Please refer to FIG. 5 , the connecting mechanism 13 adopts a bevel gear 23 , and the corresponding ends of the guide post 17 and the second transmission rod 7 are equipped with bevel gears 23 .

Example 4

Please refer to FIG. 6 , the connection mechanism 13 adopts a universal transmission shaft 20 , and the guide post 17 and the second transmission rod 7 are connected by transmission through the universal transmission shaft 20 .

Example 5

Please refer to FIG. 7 , the connection mechanism 13 adopts a universal joint 19 , and the guide post 17 and the second transmission rod 7 are connected through the universal joint 19 for transmission.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. An automatic thread trimming mechanism used in a narrow space, comprising a rocker arm (1), a balance block (2), a motor (3), a horn tip (4), a knife groove (5), a first transmission rod (6) ), second transmission rod (7), driving bevel gear (8), transmission bevel gear (9), driving bevel gear (10), driven bevel gear (11), transmission mechanism (12), connecting mechanism (13) , a needle plate (14), a cylindrical gear (15), a transmission gear (16) and a guide column (17), characterized in that: one end of the rocker arm (1) is fixed with a balance block (2), and the rocker arm (1) ) A horn tip (4) is installed at the other end, a motor (3) is installed inside the rocker arm (1), a drive bevel gear (8) is installed at the output end of the motor (3), and a side of the rocker arm (1) is installed A first transmission rod (6) is installed while rotating, and a transmission bevel gear (9) is installed at the top of the first transmission rod (6), and the transmission bevel gear (9) is meshed with the driving bevel gear (8). A second transmission rod (7) is rotatably installed on the side of the rocker arm (1), and a driving bevel gear (10) and a driven cone are respectively installed at the corresponding ends of the first transmission rod (6) and the second transmission rod (7). gear (11), and the driving bevel gear (10) is meshed with the driven bevel gear (11), a guide post (17) is rotatably installed on one side of the horn tip (4), and the guide post (17) passes through the connecting mechanism ( 13) Connected to the second transmission rod (7), the end of the horn tip (4) is rotatably installed with a transmission gear (16), and the guide post (17) is connected to the transmission gear (16) through the transmission mechanism (12) for transmission, A cylindrical gear (15) is rotatably installed inside the horn tip (4), and the cylindrical gear (15) is meshed with the transmission gear (16). A needle plate (14) is installed on the top of the horn tip (4). (15) A knife groove (5) is fixed at a position corresponding to the edge of the needle plate (14). 2. An automatic thread trimming mechanism used in a narrow space according to claim 1, characterized in that: the transmission mechanism (12) comprises a synchronous wheel (21) and a synchronous belt (22), and the guide post (17) A synchronizing wheel (21) is installed on the end portion corresponding to the end portion of the rotating shaft of the transmission gear (16), and the synchronizing wheel (21) is connected through a synchronizing belt (22). 3. An automatic thread trimming mechanism used in a narrow space according to claim 1, characterized in that: the transmission mechanism (12) comprises a driving gear (18), and the driving gear (18) is installed on the guide gear (18). The end of the column (17), and the driving gear (18) is meshed with the transmission gear (16). 4. An automatic thread trimming mechanism used in a narrow space according to claim 1, characterized in that: the connecting mechanism (13) comprises a universal joint (19), and the guide post (17) is connected to the second The transmission rod (7) is connected through the universal joint (19). 5. An automatic thread trimming mechanism used in a narrow space according to claim 1, characterized in that: the connecting mechanism (13) comprises a universal drive shaft (20), and the guide post (17) is connected to the first The two transmission rods (7) are connected through a universal transmission shaft (20). 6. An automatic thread trimming mechanism used in a narrow space according to claim 1, characterized in that: the connecting mechanism (13) comprises a bevel gear (23), and the guide post (17) is connected to the second Bevel gears (23) are installed on opposite ends of the transmission rod (7), and the guide post (17) and the second transmission rod (7) are meshed and connected through the bevel gear (23).

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