CN210420310U

CN210420310U - Passive yarn cutting assembly for doffing robot

Info

Publication number: CN210420310U
Application number: CN201921410841.4U
Authority: CN
Inventors: 刘继东; 邬元海
Original assignee: Luoyang Fangzhi Measurement & Control Co ltd
Current assignee: Luoyang Fangzhi Measurement & Control Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-04-28
Anticipated expiration: 2029-08-28

Abstract

A passive yarn cutting assembly for a doffing robot comprises a mounting frame and a combined cutting edge arranged on the mounting frame, wherein the combined cutting edge comprises a straight edge which is horizontally and fixedly arranged, and the cutting edge of the straight edge faces upwards so that yarns are cut off by the straight edge in the falling process of a full bobbin; the combined blade also comprises a plurality of side blades fixedly arranged along the length direction of the straight blade, so that yarns which cannot be contacted with the straight blade are cut by the side blades in the advancing process of the doffing robot; the straight edge cutting edge is higher than the root of the side edge. The utility model discloses used cutter does not need power drive for fixed knot constructs, and is with low costs, the trouble is few to because it is the passive form and cuts the yarn, also can not gather into the pencil with many yarns, consequently compare in active yarn subassembly that cuts, it is better to cut the yarn effect.

Description

Passive yarn cutting assembly for doffing robot

Technical Field

The utility model belongs to the technical field of spinning equipment, concretely relates to yarn subassembly is cut to passive form that doffing robot used.

Background

The doffing work of the spun yarn is an important component of the production of a spun yarn workshop, and the full bobbin on the spinning machine needs to be taken down, broken and inserted with the empty bobbin. Doffing is mainly completed by manpower or a corresponding doffer, and because manual doffing needs a large amount of labor, the cost is high, the labor intensity is high, and certain potential safety hazards exist, the doffer is mainly adopted to complete the doffing at present. The doffing machine can also be called a doffing trolley or a doffing robot and generally comprises a yarn pulling mechanism, a bobbin inserting mechanism and a travelling mechanism, wherein the yarn pulling mechanism realizes the grabbing and the collection of full bobbins, the bobbin inserting mechanism realizes the ordered loading of empty bobbins, the travelling mechanism is matched with the automatic positioning and the travelling of yarn pulling and bobbin inserting actions, and the doffing machine is further provided with a yarn cutting assembly used for cutting off yarns between the full bobbins and a spinning machine in the falling process of the full bobbins.

At present, a yarn cutting assembly on a doffing robot is generally provided with a linear track on the doffing robot, a cutter driven by a motor or an air cylinder can reciprocate on the linear track, and the yarn cutting assembly is positioned between a yarn pulling mechanism and a spinning frame, so that yarns drawn by the spinning frame can cross the linear track in the falling process of a full bobbin, and the cutter can cut off the yarns by moving along the linear track.

However, the above-mentioned current yarn cutting assembly is relatively expensive, and its yarn cutting effect is not ideal, because the existing doffing robot generally has a plurality of yarn grasping air bags, for example 10 yarn grasping air bags, one yarn pulling action will simultaneously pull out 10 full bobbins, and correspondingly there will be 10 yarns, if the cutter cannot cut off the yarns one by one, but causes several yarns to gather into a bundle, it will be difficult to cut off them, as the doffing robot continues to move forward, the full yarns which have been pulled out and fall into the yarn basket will be pulled out of the basket, and this will affect the operation of doffing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a yarn subassembly is cut to passive form that doffing robot used, used cutter do not need power drive for fixed knot constructs, and with low costs, the trouble is few to because the yarn is cut to the passive form, also can not gather many yarns into the pencil, consequently compare in the active yarn subassembly that cuts, cut the yarn effect better.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a passive yarn cutting assembly for a doffing robot comprises a mounting frame and a combined cutting edge arranged on the mounting frame, wherein the combined cutting edge comprises a straight edge which is horizontally and fixedly arranged, and the cutting edge of the straight edge faces upwards so that yarns are cut off by the straight edge in the falling process of a full bobbin; the combined blade also comprises a plurality of side blades fixedly arranged along the length direction of the straight blade, so that yarns which cannot be contacted with the straight blade are cut by the side blades in the advancing process of the doffing robot; the straight edge cutting edge is higher than the root of the side edge.

The straight edge is the cutting edge of a blade horizontally arranged, and the blade is fixed on the mounting frame.

The side blades are blades on two sides of sawteeth on the serrated knife, the serrated knife is fixed on the mounting frame, a blade is fixed on a knife body of the serrated knife, and the blades are straight blades.

The rear end of the mounting rack is also provided with a vertical cutting edge, the cutting edge of the vertical cutting edge faces the advancing direction of the doffing robot, and the length of the vertical cutting edge is larger than that of the side edge, so that yarns which do not enter the combined cutting edge cutting area are cut off by the vertical cutting edge in the advancing process of the doffing robot.

The number of the blades is one or more.

The utility model has the advantages that: the utility model discloses a combination cutting edge is fixed structure, at the in-process that cuts off the yarn, need not to provide power, also need not control system's control, just so can be on keeping basic cutting function's basis, save equipment manufacturing cost and use cost, and because full spool self has basis weight, consequently full spool can the tractive yarn, make the yarn fall and cut off on straight sword, and to some yarn that can not fall on straight sword, if the yarn falls between two side sword, so also can be cut off by the side sword at doffing robot walking in-process, if the yarn position is higher, can not fall between the side sword, so advance the in-process at doffer people, also can be cut off by vertical cutting edge, the yarn when just so can guaranteeing full spool doffing can in time be cut off.

Drawings

Fig. 1 is a schematic structural view of the present invention in embodiment 1;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of the present invention in example 1;

the labels in the figure are: 1. mounting rack, 2, blade, 3, serrated knife, 4, straight edge, 5, side edge, 6, sawtooth, 7, vertical blade.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.

Example 1: a passive yarn cutting assembly for a doffing robot is mounted on one side of the doffing robot and is positioned between a yarn pulling mechanism and a spinning frame when in use, and in the process of pulling off a full bobbin by the yarn pulling mechanism and loosening the full bobbin to enable the full bobbin to freely fall to a collecting box, the passive yarn cutting assembly cuts off yarns connected between the full bobbin and the spinning frame, so that the full bobbin is separated from the spinning frame.

In order to achieve the above effects, the passive yarn cutting assembly comprises a mounting frame 1 and a combined cutting edge, the mounting frame 1 is fixed on the doffing robot, the combined cutting edge comprises a straight edge 4 horizontally and fixedly arranged and a plurality of side edges 5 arranged along the length direction of the straight edge 4, in this embodiment, the straight edge 4 is the cutting edge of a blade 2, the cutting edge of the straight edge 4 faces upwards so as to cut the fallen yarns, and the blade 2 can be one or a plurality of blades connected in sequence; the side edges 5 are cutting edges on two sides of sawteeth 6 on the serrated knife 3, the serrated knife 3 is installed on the installation frame 1, the blade 2 is fixed on a knife body of the serrated knife 3 through screws, and the cutting edge of the straight edge 4 is higher than the root part of the side edge 5, namely the straight edge 4 is exposed from a gap between every two adjacent sawteeth 6.

In the process that the doffing robot advances along the spinning frame, the yarn grabbing air bag of the yarn pulling mechanism grabs a full bobbin and loosens the full bobbin from the upper part of the collecting box, the full bobbin freely falls, yarns connected between the full bobbin and the spinning frame collide with the straight edge 4 and are cut off by the straight edge 4, if a certain yarn is higher in position, the yarn cannot contact with the straight edge 4 but falls between the adjacent sawteeth 6, and therefore the side edges 5 on the sawteeth 6 cut off the yarns along with the advancing of the doffing robot.

Example 2: on the basis of the embodiment 1, the rear end of the mounting frame 1 is further provided with a vertical blade 7, the cutting edge of the vertical blade 7 faces the advancing direction of the doffing robot, and the length of the vertical blade 7 is greater than that of the side blade 5, so that yarns which do not enter the combined blade cutting area are cut by the vertical blade 7 in the advancing process of the doffing robot.

The vertical edge 7 in this embodiment is directed to the fact that the yarn, when passing over the yarn cutting assembly, is positioned higher than the teeth 6 and cannot fall between two teeth 6, where it is cut by the vertical edge 7.

The remaining structure of the yarn cutting assembly in this example is the same as that of example 1.

It should be noted that in fig. 1 and 3, all the saw teeth are not shown on the saw blade in all, so as to highlight the saw tooth effect, but it should be understood that in actual use, the saw blade is provided with continuous saw teeth from left to right.

Claims

1. The utility model provides a yarn subassembly is cut to passive form that doffing robot used which characterized in that: the combined cutting edge comprises a mounting frame (1) and a combined cutting edge arranged on the mounting frame (1), wherein the combined cutting edge comprises a straight edge (4) which is horizontally and fixedly arranged, and the cutting edge of the straight edge (4) faces upwards so that yarns are cut off by the straight edge (4) in the falling process of a full bobbin; the combined blade also comprises a plurality of side blades (5) fixedly arranged along the length direction of the straight blade (4), so that yarns which cannot be contacted with the straight blade (4) are cut by the side blades (5) in the advancing process of the doffing robot; the cutting edge of the straight edge (4) is higher than the root of the side edge (5).

2. The passive yarn cutting assembly for a doffing robot according to claim 1 wherein: the straight edge (4) is the cutting edge of the blade (2) which is horizontally arranged, and the blade (2) is fixed on the mounting frame (1).

3. The passive yarn cutting assembly for a doffing robot according to claim 1 wherein: the side blades (5) are blades on two sides of sawteeth (6) on the serrated knife (3), the serrated knife (3) is fixed on the mounting frame (1), a blade (2) is fixed on a knife body of the serrated knife (3), and the blade (2) is the straight blade (4).

4. The passive yarn cutting assembly for a doffing robot according to claim 1 wherein: the rear end of the mounting rack (1) is also provided with a vertical cutting edge (7), the cutting edge of the vertical cutting edge (7) faces the advancing direction of the doffing robot, and the length of the vertical cutting edge (7) is larger than that of the side edge (5), so that yarns which do not enter a combined cutting edge cutting area are cut off by the vertical cutting edge (7) in the advancing process of the doffing robot.

5. A passive yarn cutting assembly for a doffing robot according to claim 2 or 3 wherein: the number of the blades (2) is one or more.