CN111793913A

CN111793913A - Scissors device

Info

Publication number: CN111793913A
Application number: CN202010788675.2A
Authority: CN
Inventors: 陈学生; 汤少平; 张叶辉
Original assignee: Jiangxi Hefeng Electronic Machinery Co ltd
Current assignee: Jiangxi Hefeng Electronic Machinery Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-10-20
Anticipated expiration: 2040-08-07
Also published as: CN111793913B

Abstract

The invention discloses a scissor device, comprising: a mounting frame; the scissors assembly comprises a first driving mechanism, a fixed knife and a movable knife, the first driving mechanism is mounted on the mounting frame through a first fixing plate, the fixed knife is fixed on the first fixing plate, one end of the movable knife is hinged to the fixed knife, and the other end of the movable knife is hinged to the first driving mechanism so as to rotate relative to the fixed knife under the driving of the first driving mechanism, so that the movable knife and the fixed knife are opened and closed to cut embroidery materials; and the controller is connected with the first driving mechanism to control the operation of the first driving mechanism. Compared with the prior art, the scissors device provided by the invention has the advantages that the movable knife and the fixed knife are opened and closed through the first driving mechanism, embroidery threads with different thread diameters or different types can be cut, the thread cutting action is rapidly completed, the adaptability is strong, and the universality is better.

Description

Scissors device

Technical Field

The invention relates to the field of embroidery equipment, in particular to a scissor device.

Background

The embroidery machine is the most advanced embroidery machine of the present generation, and can realize the high speed and high efficiency of the traditional manual embroidery. However, in the prior art, a scissors device for cutting an embroidery material in an embroidery machine can only cut a thin thread, that is, only a sewing material with a relatively small thread diameter can be cut, and the universality is poor when other embroidery materials with a relatively large thread diameter or other types of threads are cut continuously.

In view of the above, it is desirable to provide a scissors device with better versatility to solve the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a scissors device with better universality.

To solve the above technical problem, the present invention provides a scissors device, comprising:

a mounting frame;

the scissors assembly comprises a first driving mechanism, a fixed knife and a movable knife, the first driving mechanism is mounted on the mounting frame through a first fixing plate, the fixed knife is fixed on the first fixing plate, one end of the movable knife is hinged to the fixed knife, and the other end of the movable knife is hinged to the first driving mechanism so as to rotate relative to the fixed knife under the driving of the first driving mechanism, so that the movable knife and the fixed knife are opened and closed to cut embroidery materials;

and the controller is connected with the first driving mechanism to control the operation of the first driving mechanism.

The further technical scheme is as follows: the movable cutter comprises a cutter holder and a cutting edge, the cutter holder comprises a first connecting plate and a second connecting plate, the second connecting plate is formed by upwards extending the first connecting plate, the top end of the second connecting plate is hinged to a first driving mechanism, the cutting edge is located on the first connecting plate, and one end of the cutting edge is hinged to the fixed cutter.

The further technical scheme is as follows: the scissors device further comprises a first sliding driving mechanism, the first sliding driving mechanism comprises a first sliding device and a second cylinder, the second cylinder is fixed at the upper end of the mounting frame through a second fixing plate, the first sliding device comprises a first guide rail and a first sliding block, the first guide rail and the first sliding block are fixed on the mounting frame, the first sliding block is located above the scissors assembly and connected with the second cylinder, and the scissors assembly slides on the first guide rail under the driving of the second cylinder, so that the scissors assembly is driven to move up and down.

The further technical scheme is as follows: first slip actuating mechanism is still including last limiting plate and anticreep limiting plate, last limiting plate and anticreep limiting plate are located the upper and lower both ends of first guide rail respectively to the gliding position of restriction first slider.

The further technical scheme is as follows: the anti-falling limiting plate comprises a first limiting plate and a second limiting plate formed by inwards extending from the right side of the first limiting plate, and the inner side face of the second limiting plate is tightly attached to the guide surface of the first guide rail.

The further technical scheme is as follows: the scissors device further comprises a second sliding device, the second sliding device comprises a second guide rail and a second sliding block, the second guide rail and the second sliding block are fixed on the mounting frame, the first fixing plate is installed on the second sliding block through a fourth connecting plate, and the second sliding block can slide on the second guide rail under the driving of the first sliding block, so that the scissors assembly is driven to move up and down.

The further technical scheme is as follows: the second sliding device further comprises a lower limiting plate which is located below the second guide rail and used for limiting the sliding distance of the fourth connecting plate, the first guide rail is fixed to one side of the fourth connecting plate through a third fixing plate, the scissors device further comprises a third sliding device, the third sliding device comprises a third guide rail fixed to the fourth connecting plate and a third sliding block, the first fixing plate is installed on the third sliding block through a third connecting plate, the first sliding block is located above the third connecting plate and is abutted to the third connecting plate under the driving of the first air cylinder so as to drive the fourth connecting plate to move, the end faces of the first sliding block and the third connecting plate are oblique planes, and the third connecting plate is driven to move rightwards along the third guide rail through the first sliding block when the end faces of the fourth connecting plate are abutted to the lower limiting plate.

The further technical scheme is as follows: the scissors device further comprises a spring, one end of the spring is connected with the first guide rail, and the other end of the spring is connected with the third connecting plate so as to reset the third connecting plate when the piston rod of the second air cylinder retracts.

The further technical scheme is as follows: and a right limiting plate is arranged on the fourth connecting plate to limit the position of the third connecting plate moving along the third guide rail.

The further technical scheme is as follows: the first driving mechanism comprises a first air cylinder and a connecting driving block, and the connecting driving block is connected to a piston rod of the first air cylinder and hinged to the movable knife.

Compared with the prior art, the fixed knife in the scissors device is fixed on the first fixing plate, one end of the movable knife is hinged on the fixed knife, the other end of the movable knife is hinged on the first driving mechanism which is arranged on the mounting frame through the first fixing plate, so that the movable knife and the fixed knife can rotate relative to the first driving mechanism and the fixed knife under the driving of the first driving mechanism, the movable knife and the fixed knife can be opened and closed, embroidery materials are cut, namely, the movable knife and the fixed knife can be opened and closed through the first driving mechanism, embroidery threads with different thread diameters or different types can be cut, the thread cutting action can be rapidly completed, the adaptability is strong, and the universality is better.

Drawings

FIG. 1 is a schematic structural diagram of a scissors assembly according to an embodiment of the present invention.

FIG. 2 is a perspective view of a scissors device according to an embodiment of the present invention.

Fig. 3 is a perspective view of the scissors assembly of the present invention in another working state.

Fig. 4 is a schematic front view of the scissor arrangement of fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.

Referring to fig. 1-4, fig. 1-4 illustrate one embodiment of the scissors assembly 1 of the present invention, and the spring 60 is not shown in fig. 2-4 in order to more clearly show the relationship between the first slider 3012 and the third connecting plate 503. In the embodiment shown in the drawings, the scissors device 1 includes a mounting frame 10, a scissors assembly 20 and a controller, wherein the scissors assembly 20 includes a first driving mechanism 201, a fixed knife 202 and a movable knife 203, the first driving mechanism 201 is mounted on the mounting frame 10 through a first fixing plate 204, the fixed knife 202 is fixed on the first fixing plate 204, one end of the movable knife 203 is hinged to the fixed knife 202, and the other end of the movable knife 203 is hinged to the first driving mechanism 201, so as to rotate relative to the first driving mechanism 201 and the fixed knife 202 under the driving of the first driving mechanism 201, thereby realizing the opening and closing of the movable knife 203 and the fixed knife 202 to cut embroidery materials; the controller is connected to the first driving mechanism 201 to control the operation of the first driving mechanism 201. Specifically, in this embodiment, the first driving mechanism 201 includes a first cylinder 2011 and a connecting driving block 2012, and the connecting driving block 2012 is connected to a piston rod 2013 of the first cylinder 2011 and is hinged to the movable blade 203 through a second pin 2034; preferably, the control module is implemented based on a PLC, while in certain other embodiments, the control module may be implemented based on a control chip such as an ARM, a DSP, or the like. Based on the above design, the fixed knife 202 in the scissors device 1 of the present invention is fixed on the first fixing plate 204, one end of the movable knife 203 is hinged on the fixed knife 202, and the other end is hinged on the first driving mechanism 201 installed on the mounting frame 10 through the first fixing plate 204, so as to rotate relative to the first driving mechanism 201 and the fixed knife 202 under the driving of the first driving mechanism 201, thereby realizing the opening and closing of the movable knife 203 and the fixed knife 202, so as to cut embroidery materials, i.e., the opening and closing between the movable knife 203 and the fixed knife 202 is realized through the first driving mechanism 201, so as to cut embroidery threads with different thread diameters or different types, and to quickly complete thread cutting action, with strong adaptability and good versatility.

In some embodiments, the movable blade 203 includes a blade holder 2031 and a blade 2032, the blade holder 2031 includes a first connecting plate 311 and a second connecting plate 312 extending upward from a position of the first connecting plate 311, a top end of the second connecting plate 312 is hinged to the connecting driving block 2012, the blade 2032 is located on the first connecting plate 311, and one end of the blade 2032 is hinged to the fixed blade 202 through a first pin 2033. Based on the design, when the piston rod 2013 of the first cylinder 2011 extends, the movable knife 203 rotates downwards, and the distance between the cutting edge 2032 and the fixed knife 202 is reduced, so that embroidery materials are cut.

In some embodiments, the scissors device 1 further includes a first sliding driving mechanism 30 and a second sliding device 40, the first sliding driving mechanism 30 includes a first sliding device 301 and a second cylinder 302, the second cylinder 302 is fixed to the upper end of the mounting block 10 through a second fixing plate 303, and a magnetic sensor 307 is disposed on the second cylinder 302 to detect the operating state of the second cylinder 302, the first sliding device 301 includes a first rail 3011 fixed to the mounting block 10 and a first slider 3012, the first slider 3012 is located above the scissors assembly 20 and connected to the second cylinder 302 to slide on the first rail 3011 under the driving of the second cylinder 302; the second sliding device 40 includes a second guide rail 401 fixed on the mounting frame 10 and a second sliding block 402, the first fixing plate 204 in the scissors assembly 20 is mounted on the second sliding block 402 through a fourth connecting plate 403, and the second sliding block 402 can slide on the second guide rail 401 under the driving of the first sliding block 3012, so as to drive the scissors assembly 20 to move up and down.

With continued reference to fig. 3 and 4, further, the first sliding driving mechanism 30 further includes an upper limiting plate 305 and an anti-dropping limiting plate 306, where the upper limiting plate 305 and the anti-dropping limiting plate 306 are respectively located at the upper end and the lower end of the first guide rail 3011 to limit the sliding position of the first slider 3012. Specifically, the anti-slip limiting plate 306 includes a first limiting plate 3061 and a second limiting plate 3062 formed by extending inward from the right side of the first limiting plate 3061, in this embodiment, the first rail 3011 is fixed to one side of the fourth connecting plate 403 through a third fixing plate 304, and the inner side of the second limiting plate 3062 is tightly attached to the side of the third fixing plate 304 to limit the downward sliding position of the first slider 3012. Preferably, the first slider 3012 includes a connecting block 121 and a driving block 122, the connecting block 121 is rectangular, is located on the first rail 3011 and can move up and down along the first rail 3011, and the driving block 122 is located on the connecting block 121 and has a length longer than that of the connecting block 121.

In the embodiment shown in the drawings, the second sliding device 40 further includes a lower limiting plate 404 located below the second guide rail 401 and used for limiting the sliding distance of the fourth connecting plate 403, the scissors device 1 further includes a third sliding device 50, the third sliding device 50 includes a third guide rail 501 fixed on the fourth connecting plate 403 and a third slider 502, the first fixing plate 204 is mounted on the third slider 502 through a third connecting plate 503, the first slider 3012 is located above the third connecting plate 503 and abuts against the third connecting plate 503 under the driving of the first cylinder 2011 so as to drive the fourth connecting plate 403 to move, that is, the driving block 122 abuts against the third connecting plate 503 to provide a downward force, since the third connecting plate 503 is fixed on the fourth connecting plate 403 through the third slider 502, the fourth connecting plate 403 is driven to move downward, and the end faces of the driving block 122 abutting against the third connecting plate 503 are both chamfered faces, so that the third connecting plate 503 is driven to move rightward along the third guide rail 501 by the first slider 3012 when the lower end surface of the fourth connecting plate 403 abuts against the lower limit plate 404, and a right limit plate 405 is provided on the fourth connecting plate 403 to limit the position of the third connecting plate 503 moving along the third guide rail 501.

Further, the scissors device 1 further comprises a spring 60, one end of the spring 60 is connected to the first rail 3011, and the other end of the spring is connected to the third connecting plate 503, so as to reset the third connecting plate 503 when the piston rod of the second cylinder 302 retracts. Understandably, a connecting rod may be respectively disposed on the first rail 3011 and the third connecting plate 503, and both ends of the spring 60 may be respectively hooked on the two connecting rods. Based on the above design, when the second cylinder 302 extends, and the first slider 3012 moves downward, the driving block 122 abuts against the third connecting plate 503 to drive the fourth connecting plate 403 to move downward, and after the fourth connecting plate 403 abuts against the lower limiting plate 404, the driving block 122 continues to move downward, so that the third connecting plate 503 moves laterally to the right to drive the scissors assembly 20 to move laterally so that the embroidery material is located between the fixed knife 202 and the knife edge 2032, at this time, the spring 60 is stretched, the driving block 122 is located between the third connecting block 121 and the first guide rail 3011, and when the piston rod of the second cylinder 302 retracts, and the driving block 122 moves upward above the third connecting plate 503, the third connecting plate 503 moves laterally to the left under the action of the spring 60, and returns to the initial position.

The working principle of the scissors device 1 of the invention is described in detail below:

initially, as shown in fig. 1 and fig. 2, the first slider 3012 is located at the top end of the first rail 3011, the third connecting block 121 is located at the leftmost side of the third rail 501, and the chamfered surface of the driving block 122 abuts against the third connecting block 121, when operating, the controller controls the second cylinder 302 to operate, the piston rod of the second cylinder 302 extends, the first slider 3012 moves downward along the first rail 3011, because the third connecting plate 503 is fixed on the fourth connecting plate 403 by the third slider 502, the fourth connecting plate 403 is driven to move downward along the second rail 401 along the second slider 402, when the lower end surface of the fourth connecting plate 403 abuts against the lower limiting plate 404, the fourth connecting plate 403 stops moving (as shown in fig. 3 and fig. 4), because the end surfaces of the driving block 122 abutting against the third connecting plate 503 are both chamfered surfaces, when the first slider 3012 continues to move downward, the third connecting plate 503 is driven to move rightward along the third rail 501, so as to drive the scissors assembly 20 to move transversely to make the embroidery located between the stationary knife 202 and the knife edge 2032, at this time, the spring 60 is stretched, and the magnetic sensor 307 sends a signal to the controller, the controller controls the first cylinder 2011 to work, the piston rod 2013 of the first cylinder 2011 extends, the driving block 2012 is connected to drive the knife 203 to rotate around the first pin 2033 and the second pin 2034, the knife edge 2032 fixed on the first connecting plate 311 is closed with the stationary knife 202 to cut the embroidery, then the first cylinder 2011 retracts, the knife edge 2032 is separated from the stationary knife 202, the opening and closing of the knife edge 2032 and the stationary knife 202 are repeated, the embroidery can be cut continuously, after the embroidery is cut, the second cylinder 302 retracts under the driving of the controller, the driving block 122 moves upwards, when the connecting plate returns to its initial position, the third cylinder 503 moves transversely to the left under the action of the spring 60, and returns to the initial position, at this time, the piston rod 2013 of the first cylinder continues to retract, because the first slider 3012 is located on the top of the first guide track 3011, the first guide track 3011 is driven to move up, and thus the fourth connecting plate 403 is driven to move up, so that the fourth connecting plate 403 can return to the initial position.

In conclusion, the scissors device of the invention realizes the opening and closing between the movable knife and the fixed knife through the first driving mechanism, can cut embroidery threads with different thread diameters or different types, and can quickly finish the thread cutting action, thereby having strong adaptability and better universality.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims

1. A scissor arrangement, the scissor arrangement comprising:

a mounting frame;

2. The scissor apparatus of claim 1, wherein: the movable cutter comprises a cutter holder and a cutting edge, the cutter holder comprises a first connecting plate and a second connecting plate, the second connecting plate is formed by upwards extending the first connecting plate, the top end of the second connecting plate is hinged to a first driving mechanism, the cutting edge is located on the first connecting plate, and one end of the cutting edge is hinged to the fixed cutter.

3. The scissor apparatus of claim 1, wherein: the scissors device further comprises a first sliding driving mechanism, the first sliding driving mechanism comprises a first sliding device and a second cylinder, the second cylinder is fixed at the upper end of the mounting frame through a second fixing plate, the first sliding device comprises a first guide rail and a first sliding block, the first guide rail and the first sliding block are fixed on the mounting frame, the first sliding block is located above the scissors assembly and connected with the second cylinder, and the scissors assembly slides on the first guide rail under the driving of the second cylinder, so that the scissors assembly is driven to move up and down.

4. The scissor apparatus of claim 3, wherein: first slip actuating mechanism is still including last limiting plate and anticreep limiting plate, last limiting plate and anticreep limiting plate are located the upper and lower both ends of first guide rail respectively to the gliding position of restriction first slider.

5. The scissor apparatus of claim 4, wherein: the anti-falling limiting plate comprises a first limiting plate and a second limiting plate formed by inwards extending from the right side of the first limiting plate, and the inner side face of the second limiting plate is tightly attached to the guide surface of the first guide rail.

6. The scissor apparatus of claim 3, wherein: the scissors device further comprises a second sliding device, the second sliding device comprises a second guide rail and a second sliding block, the second guide rail and the second sliding block are fixed on the mounting frame, the first fixing plate is installed on the second sliding block through a fourth connecting plate, and the second sliding block can slide on the second guide rail under the driving of the first sliding block, so that the scissors assembly is driven to move up and down.

7. The scissor apparatus of claim 6, wherein: the second sliding device further comprises a lower limiting plate which is located below the second guide rail and used for limiting the sliding distance of the fourth connecting plate, the first guide rail is fixed to one side of the fourth connecting plate through a third fixing plate, the scissors device further comprises a third sliding device, the third sliding device comprises a third guide rail fixed to the fourth connecting plate and a third sliding block, the first fixing plate is installed on the third sliding block through a third connecting plate, the first sliding block is located above the third connecting plate and is abutted to the third connecting plate under the driving of the first air cylinder so as to drive the fourth connecting plate to move, the end faces of the first sliding block and the third connecting plate are oblique planes, and the third connecting plate is driven to move rightwards along the third guide rail through the first sliding block when the end faces of the fourth connecting plate are abutted to the lower limiting plate.

8. The scissor apparatus of claim 7, wherein: the scissors device further comprises a spring, one end of the spring is connected with the first guide rail, and the other end of the spring is connected with the third connecting plate so as to reset the third connecting plate when the piston rod of the second air cylinder retracts.

9. The scissor apparatus of claim 7, wherein: and a right limiting plate is arranged on the fourth connecting plate to limit the position of the third connecting plate moving along the third guide rail.

10. The scissor apparatus of claim 1, wherein: the first driving mechanism comprises a first air cylinder and a connecting driving block, and the connecting driving block is connected to a piston rod of the first air cylinder and hinged to the movable knife.