Yarn cutting device of sewing machine

Abstract

The utility model discloses a yarn cutting device of a sewing machine. The fixing device comprises a first fixing frame and a second fixing frame, wherein the top of the first fixing frame is connected with the second fixing frame through a screw. The first fixing frame is provided with the extending shell, the limiting hole, the embedding bolt and the spring, when the installation length of the device needs to be adjusted, the extending shell can be pulled through external force to adjust the position of the fixing plate, meanwhile, when the embedding bolt is aligned to the limiting hole, the spring is driven by elastic potential energy to drive the embedding bolt to move upwards, and the device is fixed. The embedded bolt is connected to the inner side of the wrapping rod in an embedded mode, is inserted into the limiting hole under driving of elastic potential energy of the spring and is fixed after length adjustment of the extending shell is completed, the device is suitable for different types of sewing machines, and the application range of the sewing machine yarn cutting device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of yarn cutting for sewing machines, in particular to a yarn cutting device for sewing machines. Background Art

[0002] As a modern commonly used fabric processing component, the sewing machine's main function is to pass the yarn through the outer surface of the external fabric, and complete the connection between the two groups of fabrics through the yarn. After the sewing machine fabric is sewn, the yarn cannot be cut according to the needs of use, and the user is often required to manually pick up scissors to operate, which affects the use experience of the sewing machine. The sewing machine yarn cutting device, as a cutting auxiliary component, has the main function of being installed on the working platform surface of the sewing machine, and wrapping the output end of the sewing machine to its inner side. When sewing is completed, the sewing machine yarn can be cut by driving the blade by external force, and there is no need to manually use scissors to cut the yarn.

[0003] Compared with the existing yarn cutting device for sewing machines, the utility model adds a position adjustment component. During the use of the device, the fixed position of the yarn cutting device for the sewing machine can be adjusted according to the needs of use. At the same time, it is suitable for sewing machines with different working platform sizes, thereby improving the user experience of the yarn cutting device for sewing machines. Utility Model Content

[0004] The utility model aims to provide a yarn cutting device for a sewing machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: comprising a first fixing frame and a second fixing frame, wherein the top of the first fixing frame is connected to the second fixing frame by screws;

[0006] A connecting groove is provided on both sides of the first fixed frame and the second fixed frame, an embedding rod is embedded in the inner side of the connecting groove, a shielding piece is installed on the outer side of the embedding rod, a transmission handle is installed on one side of a group of shielding pieces, a first cutting piece is installed on the inner side of the two groups of embedding rods, and a second cutting piece is installed on the inner side of the second fixed frame.

[0007] Preferably, an extension shell is installed on the back side of the first fixing frame, and the outer surface of the extension shell is wrapped and connected with a shielding shell.

[0008] Preferably, a plurality of limiting holes are formed on the outer surface of the shielding shell.

[0009] Preferably, a plurality of wrapping rods are installed inside the extension shell, and an embedding bolt is embedded in the inner side of the wrapping rod, and the embedding bolt is embedded in the limiting hole.

[0010] Preferably, a spring is installed inside the wrapping rod, and the tail end of the spring extends to the inside of the engaging bolt.

[0011] Preferably, a fixing plate is installed at the bottom of the shielding shell.

[0012] Preferably, nine groups of threaded fixing holes are formed through the outer surface of the fixing plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with an extension shell, a limiting hole, an engaging bolt and a spring. When the installation length of the device needs to be adjusted, the position of the fixing plate can be adjusted by pulling the extension shell with external force. At the same time, when the engaging bolt is aligned with the limiting hole, the spring drives the engaging bolt to move upward under the drive of elastic potential energy. The engaging bolt is engaged and connected to the inner side of the wrapping rod and is inserted into the interior of the limiting hole under the drive of the elastic potential energy of the spring. The extension shell is fixed after the length adjustment is completed. The utility model is suitable for different types of sewing machines, thereby improving the application scope of the yarn cutting device of sewing machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a yarn cutting device for a sewing machine according to the utility model;

[0016] Figure 2 for Figure 1 A schematic structural diagram of a cross-sectional connection portion of a first fixing frame;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the extended shell cross-section connection part;

[0018] Figure 4 for Figure 1 A schematic structural diagram of a first cutting piece connection portion;

[0019] Figure 5 for Figure 3 Schematic diagram of the structure of the connection part at A.

[0020] In the figure: 1. first fixed frame; 2. second fixed frame; 3. connecting groove; 4. engaging rod; 5. shielding plate; 6. transmission handle; 7. first cutting blade; 8. second cutting blade; 9. extension shell; 10. shielding shell; 11. limiting hole; 12. wrapping rod; 13. engaging bolt; 14. spring; 15. fixing plate; 16. threaded fixing hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides a technical solution: comprising a first fixing frame 1 and a second fixing frame 2, the top of the first fixing frame 1 is connected to the second fixing frame 2 by screws, the first fixing frame 1 provides fixing points for the second fixing frame 2, the connecting groove 3 and the extension shell 9 installed on its outer surface, the second fixing frame 2 is installed to the top of the first fixing frame 1 by screws, and provides fixing points for the second cutting piece 8 installed on its inner side, and when the device is fixed, the first fixing frame 1 and the second fixing frame 2 are moved to the top of the external sewing platform, and then the cloth is moved to the top of the first fixing frame 1, and at the same time, the space between the first fixing frame 1 and the second fixing frame 2 is used for the sewing machine to sew the cloth. The first fixing frame 1 and the second fixing frame 2 are provided with connecting grooves 3 on both sides, and the connecting grooves 3 are provided on both sides of the first fixing frame 1 and the second fixing frame 2, so as to provide connection points for the connecting rods 4 connected thereto and ensure the mobility of the connecting rods 4, and the connecting rods 4 are connected thereto and connected thereto on the inner side thereof, and the connecting rods 4 are connected thereto and connected thereto on the inner side thereof, so as to provide fixing points for the shielding sheets 5 installed thereon and the first cutting sheets 7 installed thereon, and the shielding sheets 5 are installed thereon and the shielding sheets 5 are installed thereon, so as to shield the outer side of the connecting rods 4 and prevent the connecting rods 4 from being moved in the connecting grooves 3. The inner side moves laterally, and at the same time provides a fixing point for the transmission handle 6 installed on its outer surface. A transmission handle 6 is installed on one side of a group of shielding plates 5. The transmission handle 6 is installed on one side of the shielding plate 5. When the yarn needs to be cut, the transmission handle 6 can be pulled by external force. At this time, the transmission handle 6 drives the first cutting piece 7 to move along the connecting groove 3 through the shielding plate 5 and the interlocking rod 4. The first cutting piece 7 is installed on the inner side of the two groups of interlocking rods 4. The first cutting piece 7 moves laterally under the drive of the transmission handle 6, and produces pressure on the yarn inside the first fixed frame 1 and the second fixed frame 2, and cooperates with the second cutting piece 8 to complete the cutting of the sewing machine yarn. The inner side of the second fixed frame 2 A second cutting blade 8 is installed on the side, and the second cutting blade 8 is installed to the inner side of the second fixed frame 2. When the yarn moves from the outer surface of the first cutting blade 7 to the outer surface of the second cutting blade 8, the second cutting blade 8 cooperates with the first cutting blade 7 to complete the cutting of the yarn. A fixing plate 15 is installed at the bottom of the shielding shell 10, and the fixing plate 15 is installed to the bottom of the shielding shell 10 to provide a fixing point for the threaded fixing holes 16 penetrated through the outer surface of the fixing plate 15. Nine groups of threaded fixing holes 16 are penetrated through the outer surface of the fixing plate 15. Before using the device, insert the external bolts into the threaded fixing holes 16, and insert the external bolts into the outer surface of the external sewing machine working platform to complete the fixation of the entire device.

[0023] Working principle: first, insert the external bolt into the threaded fixing hole 16, and insert the external bolt into the outer surface of the external sewing machine working platform to complete the fixation of the entire device. At this time, move the cloth to the top of the first fixed frame 1. At the same time, through the space between the first fixed frame 1 and the second fixed frame 2, a sewing space is provided for the sewing machine to sew the cloth. After the cloth is sewn, pull the transmission handle 6 by external force. At this time, the transmission handle 6 drives the first cutting blade 7 to move along the connecting groove 3 through the shielding plate 5 and the engaging rod 4. The first cutting blade 7 generates pressure on the yarn inside the first fixed frame 1 and the second fixed frame 2, and cooperates with the second cutting blade 8 to complete the cutting of the sewing machine yarn.

[0024] See also Figure 1 , Figure 3 and Figure 5 The utility model provides a technical solution: it includes a first fixed frame 1 and an extension shell 9, the back of the first fixed frame 1 is installed with the extension shell 9, the extension shell 9 is installed to the back of the first fixed frame 1, and provides a fixing point for the shielding shell 10 wrapped and connected to its outer surface, and also provides a fixing point for the wrapping rod 12 installed inside it, the outer surface of the extension shell 9 is wrapped and connected with the shielding shell 10, the shielding shell 10 is wrapped and connected to the outer surface of the extension shell 9, and provides a fixing point for the limiting hole 11 opened on its outer surface, and also provides a fixing point for the fixing plate 15 installed at the bottom thereof, when it is necessary to adjust the installation length of the device, the position of the fixing plate 15 can be adjusted by pulling the extension shell 9 by external force, a plurality of limiting holes 11 are opened on the outer surface of the shielding shell 10, and the limiting holes 11 are opened to the outer surface of the shielding shell 10, when the wrapping rod 12 is inserted into the limiting hole 11, the installation length of the device can be adjusted by pulling the extension shell 9 by external force, After the length of the extension shell 9 is adjusted and fixed, a plurality of wrapping rods 12 are installed inside the extension shell 9. The wrapping rods 12 are installed inside the extension shell 9 to provide a connection point for the embedding bolt 13 embedded in the inner side thereof, and at the same time provide a fixing point for the spring 14 installed inside thereof. The inner side of the wrapping rod 12 is embedded with the embedding bolt 13, and the embedding bolt 13 is embedded with the limiting hole 11. The embedding bolt 13 is embedded with the inner side of the wrapping rod 12 and is inserted into the limiting hole 11 under the drive of the elastic potential energy of the spring 14. After the length of the extension shell 9 is adjusted and fixed, a spring 14 is installed inside the wrapping rod 12, and the tail end of the spring 14 extends to the inside of the embedding bolt 13. When the spring 14 contracts, the elastic potential energy is accumulated inside. When the embedding bolt 13 is aligned with the limiting hole 11, the spring 14 drives the embedding bolt 13 to move upward under the drive of the elastic potential energy.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A yarn cutting device for a sewing machine, comprising a first fixing frame (1) and a second fixing frame (2), characterized in that: The top of the first fixing frame (1) is connected to the second fixing frame (2) via screws; Both sides of the first fixed frame (1) and the second fixed frame (2) are provided with connecting grooves (3), the inner side of the connecting grooves (3) is connected with an inserting rod (4), the outer side of the inserting rod (4) is provided with a shielding sheet (5), one side of a group of the shielding sheets (5) is provided with a transmission handle (6), the inner side of the two groups of the inserting rods (4) is provided with a first cutting sheet (7), and the inner side of the second fixed frame (2) is provided with a second cutting sheet (8).

2. A yarn cutting device for a sewing machine according to claim 1, characterized in that: An extension shell (9) is installed on the back of the first fixing frame (1), and the outer surface of the extension shell (9) is wrapped and connected with a shielding shell (10).

3. A yarn cutting device for a sewing machine according to claim 2, characterized in that: The outer surface of the shielding shell (10) is provided with a plurality of limiting holes (11).

4. A yarn cutting device for a sewing machine according to claim 2, characterized in that: A plurality of wrapping rods (12) are installed inside the extension shell (9), and an embedding bolt (13) is embedded in the inner side of the wrapping rod (12), and the embedding bolt (13) is embedded in the limiting hole (11).

5. A yarn cutting device for a sewing machine according to claim 4, characterized in that: A spring (14) is installed inside the wrapping rod (12), and the tail end of the spring (14) extends to the inside of the engaging bolt (13).

6. A yarn cutting device for a sewing machine according to claim 2, characterized in that: A fixing plate (15) is installed at the bottom of the shielding shell (10).

7. A yarn cutting device for a sewing machine according to claim 6, characterized in that: Nine groups of threaded fixing holes (16) are formed through the outer surface of the fixing plate (15).

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