CN216193141U - Yarn clamping device for circular knitting machine - Google Patents
Yarn clamping device for circular knitting machine Download PDFInfo
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- CN216193141U CN216193141U CN202122308032.6U CN202122308032U CN216193141U CN 216193141 U CN216193141 U CN 216193141U CN 202122308032 U CN202122308032 U CN 202122308032U CN 216193141 U CN216193141 U CN 216193141U
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Abstract
The utility model discloses a yarn clamping device for a circular knitting machine, which comprises a scissor bar, a yarn pressing piece and a movable plate, wherein the yarn pressing piece is positioned above the scissor bar; the yarn pressing piece is driven to move back and forth by the driving mechanism; the front end of the yarn pressing piece is a yarn pressing part, the side face of the front end of the scissor rod is provided with an opening, when the yarn pressing piece moves, the yarn pressing part moves to the other side face or exceeds the other side face from one side face of the opening, and the yarn pressing part and the upper edge of the other side face form a yarn clamping position. The utility model has simple integral structure and low cost, can quickly clamp the cut yarn after being matched with the yarn cutting device, and the spring piece can improve the pressing force of the yarn pressing piece so that the yarn pressing piece does not fall off.
Description
Technical Field
The utility model belongs to the technical field of knitting machinery, and particularly relates to a yarn clamping device for a circular knitting machine.
Background
In circular knitting machines equipped with a half dial, such as hosiery machines, seamless underwear machines and the like, some yarns are required to be clamped and cut off during knitting due to the requirements of the knitting process, and in the conventional circular knitting machines, the yarns to be cut off are generally clamped by a clamp and then cut off by serrated disc scissors on the half dial as the needle cylinder rotates. However, after the thread clamp is used for a long time, the clamping force on the yarn is reduced, and the yarn cannot be clamped quickly and effectively, so that the knitting work of the machine is influenced.
Disclosure of Invention
In order to solve the problems, the utility model provides the yarn clamping device for the circular knitting machine, which has a simple structure and large yarn clamping force and can quickly clamp yarns.
Therefore, the technical scheme of the utility model is as follows: the yarn clamping device for the circular knitting machine comprises a scissor bar, a yarn pressing piece and a movable plate, wherein the yarn pressing piece is positioned above the scissor bar, the movable plate is positioned below the scissor bar, the tail end of the yarn pressing piece is connected with the movable plate, a first long groove hole is formed in the scissor bar, a sliding block capable of sliding along the first long groove hole is arranged in the first long groove hole, and the yarn pressing piece, the sliding block and the movable plate are fixed into a whole through bolts; the driving mechanism is used for pushing the movable plate to move back and forth along the first long slotted hole, a pushing block is arranged below the tail end of the movable plate, and the driving mechanism acts on the pushing block; the yarn pressing piece is elastic, the front end of the yarn pressing piece is a yarn pressing part, and the yarn pressing part is attached to the top surface of the scissor bar; an opening is arranged on the side face of the front end of the scissor bar, the opening is provided with two side faces, one side close to the yarn pressing piece is a first side face, and the other side is a second side face; the yarn pressing piece and the movable plate move synchronously, the yarn pressing part at the front end of the yarn pressing piece moves from the first side face of the opening to the second side face or exceeds the second side face, and the yarn pressing part and the upper edge of the second side face form a yarn clamping position.
Preferably, a spring piece is further arranged above the yarn pressing piece, the tail end of the spring piece is fixedly connected with the yarn pressing piece, the front end of the spring piece is bent towards the yarn pressing piece to form a lower pressing surface, the lower pressing surface abuts against the yarn pressing part of the yarn pressing piece, and the yarn pressing part is tightly attached to the top surface of the scissor rod.
Preferably, the yarn pressing part is a clamping edge close to the opening of the scissor rod, the lower pressing surface is provided with an inward-concave arc notch close to the opening of the scissor rod, and the distance between the arc notch and the opening is greater than the distance between the clamping edge and the opening.
Preferably, the driving mechanism comprises a thread cutting cylinder and a thread releasing cylinder, the direction of the force applied to the pushing block by the thread cutting cylinder and the thread releasing cylinder is opposite, and the pushing block drives the yarn pressing sheet to move back and forth along the first long slotted hole.
Preferably, a second slotted hole is formed in the yarn pressing plate, a groove is formed in one side, facing the scissors rod, of the movable plate, a first through hole is formed in the scissors rod, the first positioning pin is arranged in the first through hole of the scissors rod, the upper end of the first positioning pin is arranged in the second slotted hole of the yarn pressing plate and can move in the second slotted hole, and the lower end of the first positioning pin is arranged in the groove of the movable plate and can move in the groove.
Preferably, the scissors further comprise a second positioning pin, a second through hole is formed in the scissors rod, the second positioning pin is arranged in the second through hole, and the lower end of the second positioning pin is arranged in the groove of the movable plate and can move in the groove; the second positioning pin and the first positioning pin are parallel to each other.
When the novel yarn cutting device is used, the novel yarn cutting device is required to be matched with the yarn cutting device, and the scissor rod is arranged above the yarn cutting device. The opening at the front end of the scissor bar is a threading position, yarns pass through the opening, and in a normal state, the yarn pressing piece is in an initial position, namely, the yarn pressing part of the yarn pressing piece does not enter the opening position, so that the yarns can pass through the opening to be woven normally; when the yarns need to be cut and clamped, the cylinder rod of the yarn cutting cylinder extends out to act on the pushing block of the movable plate to push the yarn pressing sheet to move towards the opening position, the yarn pressing part at the front end of the yarn pressing sheet moves to the second side face or exceeds the second side face from the first side face of the opening, the yarns in the opening are pushed to the second side face, and the yarn pressing part is tightly attached to the edge of the upper portion of the second side face to play a yarn clamping effect, so that the yarns can be clamped easily. Meanwhile, the yarn cutting device below the scissor rod can cut yarns.
In order to increase the yarn clamping effect of the yarn pressing sheet, a spring piece can be added above the yarn pressing sheet, the spring piece can increase the pressing force of the yarn pressing sheet, and an inwards concave arc notch is formed in the position, close to the opening of the scissor rod, of the spring piece, so that the acting force of the clamping edge on the yarn can be reduced, and the clamping edge is prevented from breaking the yarn.
The utility model has simple integral structure and low cost, can quickly clamp the cut yarn after being matched with the yarn cutting device, and the spring piece can improve the pressing force of the yarn pressing piece so that the yarn pressing piece does not fall off; the first positioning pin and the second positioning pin can position the movement of the yarn pressing piece, limit the movement track of the yarn pressing piece and ensure the stable reset of the yarn pressing piece.
Drawings
The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention
FIG. 1 is a schematic structural view of a pair of multi-purpose scissors;
FIG. 2 is a side sectional view of the multi-purpose scissors in an initial state;
fig. 3 is a side sectional view of the working state of the multi-purpose scissors.
Labeled as: the yarn cutting device comprises a scissor bar 1, a first long slotted hole 11, an opening 12, a first side surface 13, a second side surface 14, a cutting sheet 2, a pushing block 21, a cutting surface 22, a groove 23, a yarn pressing sheet 3, a yarn pressing part 31, a clamping edge 32, a second long slotted hole 33, a sliding block 4, a spring sheet 5, a lower pressing surface 51, an arc notch 52, a third long slotted hole 53, a first positioning pin 6, a second positioning pin 7 and a bolt 8.
Detailed Description
See the drawings. In the embodiment, the yarn pressing device and the yarn cutting device are integrated to form the multifunctional scissors, and the movable plate on the yarn pressing device is changed into the cutting sheet capable of cutting yarns. Multifunctional scissors includes scissors pole 1, shearing piece 2 and presses yarn piece 3, and shearing piece 2 is located scissors pole 1 below, presses yarn piece 3 to be located scissors pole 1 top, and 2 rear ends of shearing piece link to each other with pressing yarn piece 3. The yarn cutting device comprises a cutter bar 1, a yarn pressing sheet 3, a cutting sheet 2, a bolt 8, a first long groove hole 11, a sliding block 4, a first long groove hole 11, a second long groove hole 4, a second long groove hole 2, a second long groove hole 4, a second long groove hole 2, a third long groove hole and a fourth long groove hole, wherein the sliding block 4 can slide along the first long groove hole 11; a driving mechanism for pushing the shear blade to move back and forth along the first long slotted hole is further arranged behind the shear blade 2, a pushing block 21 is arranged below the rear end of the shear blade 2, and the driving mechanism acts on the pushing block to push the shear blade back and forth. The driving mechanism can be a thread cutting cylinder and a thread releasing cylinder which are opposite in direction, the direction of the force given to the pushing block by the thread cutting cylinder and the thread releasing cylinder is opposite, and the pushing block can move back and forth along the first long slotted hole.
For convenience of description, one end of the scissors cutting the yarn is defined as "front" and the other end is defined as "rear", the front end of the scissors rod 1 is provided with a lateral opening 12, the yarn passes through the opening, and the opening is provided with two side surfaces, wherein the first side surface 13 is arranged on the opposite rear side, and the second side surface 14 is arranged on the other side. The front end of the shear blade 2 is provided with a shear surface 22, the upper part of the shear blade is attached to the bottom surface of the shear rod, and the included angle between the shear surface 22 and the bottom surface of the shear rod 1 is less than or equal to 90 degrees; during the movement of the cut yarn, the cutting plane moves from the first side surface to the second side surface or beyond the second side surface of the opening, and the cutting plane intersects with the lower edge of the second side surface to form a cutting position A of the cut yarn.
The yarn pressing piece 3 has elasticity, the rear end of the yarn pressing piece 3 is fixedly connected with the shearing piece 2, the front end of the yarn pressing piece 3 is a yarn pressing part 31, the yarn pressing part is attached to the top surface of the cutter rod, the yarn pressing piece 3 can move synchronously with the shearing piece 2, and the yarn pressing part 3 can move to the second side surface or exceed the second side surface from the first side surface of the opening and is matched with the upper edge of the second side surface to clamp yarns. In order to provide pressing force for the yarn pressing piece 3, a spring piece 5 is arranged above the yarn pressing piece, the tail end of the spring piece 5 is fixedly connected with the yarn pressing piece 3, the front end of the spring piece 5 is bent towards the yarn pressing piece to form a lower pressing surface 51, the lower pressing surface 51 is abutted against the yarn pressing part 31 of the yarn pressing piece, and the yarn pressing part is tightly attached to the top surface of the scissor rod. The yarn pressing part is provided with a clamping edge 32 close to the opening of the scissor rod, and the lower pressing surface 51 is provided with a concave arc notch 52 close to the opening of the scissor rod, so that the acting force of the clamping edge on the yarn can be reduced, and the clamping edge is prevented from breaking the yarn. The distance between the arc notch 52 and the opening and the distance between the shearing surface 22 and the opening are both larger than the distance between the clamping edge 32 and the opening, that is, the clamping edge 32 is closer to the opening, the clamping edge is at the forefront when moving, and the yarn pressing sheet can clamp the yarn before the yarn is cut by the shearing surface, so that the yarn is prevented from falling off.
For moving stability, a second long slotted hole 33 is formed in the yarn pressing sheet 3, a third long slotted hole 53 is formed in the spring piece 5, a groove 23 is formed in one side, facing the scissor rod, of the scissor piece 2, the second long slotted hole and the third long slotted hole are opposite to the groove in position, and a first through hole and a second through hole which are located on the same straight line are formed in the scissor rod; the yarn cutting device also comprises a first positioning pin 6 and a second positioning pin 7, wherein the upper end of the first positioning pin 6 is arranged in the second long slotted hole 33 of the yarn pressing sheet 3 and can move in the second long slotted hole 33, and the lower end of the first positioning pin 6 is arranged in the groove 23 of the cutting sheet 2 and can move in the groove. The second positioning pin 7 is arranged in the second through hole, and the lower end of the second positioning pin 7 is arranged in the groove 23 of the shear blade and can move in the groove; the second positioning pin and the first positioning pin are parallel to each other. First, second locating pin can fix a position shearing piece and yarn pressing piece, inject the removal orbit between them, guarantee to cut the piece and the yarn pressing piece is stabilized and is reset.
When the yarn cutting device is used, the opening 12 at the front end of the cutter bar 1 is a yarn threading position, yarns penetrate through the opening, the cutting sheet 2 is in an initial position under a normal state, namely, a cutting surface at the front end of the cutting sheet does not enter the opening position, and the yarns can penetrate through the opening and are woven normally; when the yarns need to be cut, the air cylinder rod of the thread cutting air cylinder extends out to act on the pushing block 21 of the cut piece, the cut piece 2 is pushed to move towards the opening position, the cutting surface 22 at the front end of the cut piece 2 moves to the second side surface or exceeds the second side surface from the first side surface of the opening, the yarns in the opening are pushed to the second side surface, and the cutting surfaces and the bottom edges of the second side surface are mutually staggered to achieve the cutting effect, so that the yarns can be easily cut. When the required shearing piece is pushed out of the opening position, the air cylinder rod of the pay-off air cylinder gives a force opposite to one direction to the pushing block to push the shearing piece to move backwards, so that the shearing surface at the front end of the shearing piece leaves the opening position of the shearing tool rod, and the shearing piece returns to the original position.
And in order to facilitate the next use of the yarn, the yarn pressing piece 3 above the scissor rod can play a role in clamping the yarn. The tail end of the yarn pressing piece is fixed with the shearing piece into a whole and can move synchronously with the shearing piece, when the shearing piece moves forwards to shear the yarns, the yarn pressing piece moves synchronously, and then the yarn pressing part at the front end of the yarn pressing piece is matched with the edge of the upper part of the second side face to clamp the yarns. The elastic yarn pressing piece 3 can ensure that the clamping edge of the yarn pressing part and the upper edge of the second side do not cut yarns and only clamp the yarns. The spring piece 5 can increase the pressing force of the yarn piece, and the spring piece is provided with an inwards concave arc notch close to the opening of the scissor rod, so that the acting force of the clamping edge on the yarn can be reduced, the yarn cannot be broken by the clamping edge, and the pressing force can be kept.
Claims (6)
1. Yarn clamping device is used to circle machine, its characterized in that: the yarn pressing device comprises a scissor bar, a yarn pressing piece and a movable plate, wherein the yarn pressing piece is positioned above the scissor bar, the movable plate is positioned below the scissor bar, the tail end of the yarn pressing piece is connected with the movable plate, a first long groove hole is formed in the scissor bar, a sliding block capable of sliding along the first long groove hole is arranged in the first long groove hole, and the yarn pressing piece, the sliding block and the movable plate are fixed into a whole through bolts; the driving mechanism is used for pushing the movable plate to move back and forth along the first long slotted hole, a pushing block is arranged below the tail end of the movable plate, and the driving mechanism acts on the pushing block; the yarn pressing piece is elastic, the front end of the yarn pressing piece is a yarn pressing part, and the yarn pressing part is attached to the top surface of the scissor bar; an opening is arranged on the side face of the front end of the scissor bar, the opening is provided with two side faces, one side close to the yarn pressing piece is a first side face, and the other side is a second side face; the yarn pressing piece and the movable plate move synchronously, the yarn pressing part at the front end of the yarn pressing piece moves from the first side face of the opening to the second side face or exceeds the second side face, and the yarn pressing part and the upper edge of the second side face form a yarn clamping position.
2. A yarn clamping device for a circular knitting machine as claimed in claim 1, wherein: the yarn pressing device is characterized in that a spring piece is further arranged above the yarn pressing piece, the tail end of the spring piece is fixedly connected with the yarn pressing piece, the front end of the spring piece bends towards the yarn pressing piece to form a pressing surface, the pressing surface abuts against the yarn pressing part of the yarn pressing piece, and the yarn pressing part is tightly attached to the top surface of the scissor rod.
3. A yarn clamping device for a circular knitting machine as claimed in claim 2, wherein: the yarn pressing portion is provided with a clamping edge close to the opening of the scissor rod, the lower pressing face is provided with an inwards concave arc notch close to the opening of the scissor rod, and the distance between the arc notch and the opening is larger than the distance between the clamping edge and the opening.
4. A yarn clamping device for a circular knitting machine as claimed in claim 1, wherein: the driving mechanism comprises a thread cutting cylinder and a thread releasing cylinder, the direction of the force applied to the pushing block by the thread cutting cylinder and the thread releasing cylinder is opposite, and the pushing block drives the yarn pressing sheet to move back and forth along the first long slotted hole.
5. A yarn clamping device for a circular knitting machine as claimed in claim 1, wherein: the yarn pressing piece is provided with a second slotted hole, one side of the movable plate, which faces the yarn cutting rod, is provided with a groove, the yarn cutting rod is provided with a first through hole, the first positioning pin is arranged in the first through hole of the yarn cutting rod, the upper end of the first positioning pin is arranged in the second slotted hole of the yarn pressing piece and can move in the second slotted hole, and the lower end of the first positioning pin is arranged in the groove of the movable plate and can move in the groove.
6. A yarn clamping device for a circular knitting machine according to claim 5, characterized in that: the scissors rod is provided with a second through hole, the second positioning pin is arranged in the second through hole, and the lower end of the second positioning pin is arranged in the groove of the movable plate and can move in the groove; the second positioning pin and the first positioning pin are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308032.6U CN216193141U (en) | 2021-09-24 | 2021-09-24 | Yarn clamping device for circular knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308032.6U CN216193141U (en) | 2021-09-24 | 2021-09-24 | Yarn clamping device for circular knitting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216193141U true CN216193141U (en) | 2022-04-05 |
Family
ID=80921562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122308032.6U Active CN216193141U (en) | 2021-09-24 | 2021-09-24 | Yarn clamping device for circular knitting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216193141U (en) |
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2021
- 2021-09-24 CN CN202122308032.6U patent/CN216193141U/en active Active
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