SU1632914A1 - Device for removing thread from tubes - Google Patents

Abstract

The invention relates to equipment for the textile industry, namely, a device for removing filaments from cartridges, which allows the device to expand its technological capabilities. The device comprises a frame on which a plate is fixed with guide columns mounted on it, and a mounting mandrel in the center of the plate. The upper ends of the columns are connected to a plate with a sleeve fixed in its center, carrying a spring-loaded mandrel. one is located on diameters determined in accordance with the diameters of the chuck and winding. Cutting knives are used for the final cutting of the threads from the cartridge. A cartridge with a thread is installed on the mandrel, with the traverse going down, the cutting knives cut the thread into sections, which are then used, for example, in the production of nonwoven fabric. The resulting fiber is removed through a diffuser. 6 silt (O C

Description

The invention relates to the textile industry and can be used to remove filaments from cylindrical and conical cartridges.

The aim of the invention is to expand the technological capabilities of the device.

FIG. 1 shows the device, a general view in section; in fig. 2 is a section A-A in FIG. one; in fig. 3-6 are schemas for cutting threads with a different number of cutting knives, from two to eight.

The device comprises a frame 1, on which the plate 2 is fixed with guide columns 3 installed on it, and an adjusting mandrel 4 is located in the center of the hole. The upper ends of the columns are connected to the plate 5 with a sleeve 6 fixed in its center supporting the spring-loaded mandrel 7. On plate 5 is fixed hydraulic cylinders 8, which are

the reciprocating movement of the yoke 9, on which the knife head 10 is mounted, is pivoted for ease of maintenance. On the knife head an even number of holders 11 with split knives 12 are mounted. Part of the knives are installed one at a time so that their cutting edges are located on diameter d ,, + 0.1 MM; diss; dn-f- + 0.5 mm, and the remaining knives are that their cutting edges are located on the diameter

SЈ

OS

to;

her

J

-Ayx + 1 ,.

where dn is the diameter of the cartridge, the threads from which are to be removed,

BUT,

- maximum winding diameter

threads. For adjusting knives after regrinding SERVERS screw 13

In order to avoid damage to the cartridge itself, the first group of knives is adjusted so that their cutting edges do not touch its outer part. To do this, it is enough not to bring the cutting edge to the cartridge by 0.05-0.25 mm. For the final cutting of the thread from the cartridge, cutting spring-loaded circular knives 14 are used. Depending on the type of threads, the size of the cartridges and the technology adopted, a different number of cutting and cutting knives is adopted.

To prevent under-cutting and sliding of the last threads from the cartridge with cutting knives with inaccurate adjustment along the axis of the cartridge, an emphasis 15 mounted on the mandrel 4 for threads with slots for passage of the knives is used. The cut threads are removed through a diffuser 16 connected to a pneumatic system (not shown).

The device works as follows.

On the mandrel 4, the cartridge is installed with the thread to be cut and the hydraulic cylinders 8 are turned on. Traverse 9 releases the spring-loaded mandrel 7 located in the sleeve 6 and fixes the cartridge at the other end. Upon further movement of the crosshead along the guide columns 3 located on the cutter head 10 in the holders 11, the split knives 12 cut through the layers of thread wound on the cartridge. The cutting knife located behind the cutting knife, when approaching the cartridge, is first taken away from the cartridge by the device in order not to cut into it and not damage the surface, and then presses the spring on the cartridge and completely cuts off the entire thread from it (layer 0.05-0.25 mm ). The resulting filaments fall into the diffuser 16 and are removed from there by a fan.

In order to remove the threads from the conical cartridges, the holders 11 are bonded to the copiers and, when the knife head is moved along the cartridge, its cone shape is monitored. Depending on the maximum winding diameter of the yarns, the design and the diameter of the chuck dn, one or another arrangement of knives is selected according to the diameters within the limits of inequalities. The length of the thread segments L is thus obtained as follows:

, D) 1 rmax.

  - max-rep

Rschks, At-Ј- Lor, -,

at

P

Ј „, PR.K.

f 2n

2n (dn + 0, l mm) with dn-r-0.1 mm

priashs N Јot,

(Ds +). P

Lair

n (DwrKT-drt).

at dn + 0.5 MM Lore

2n 2n (dn + 0.5 mm)

where n is the number of cutting knives.

This arrangement of knives provides the smallest difference in the size of the segments. Thus, the proposed design of the device for removing filaments from the cartridges allows to reduce the cost of the fiber obtained by cutting and expands

technological capabilities of the device by combining the operations of cutting threads and their grinding. This eliminates the need for additional fiber shredding equipment and reduces labor costs.

thirty

Claims (1)

Invention Formula A device for removing filaments from cartridges, containing a device for fixing cartridges, a knife head with split and cutting blades, associated with a mechanism for reciprocating its movement along the axis of the cartridge, characterized in that in order to expand technological capabilities, the knife head has additional cutting knives when In this case, all the cutting knives are installed evenly around the axis of the chuck so that the cutting edges of the knives are arranged alternately in circumference with diameters selected according to the diameter of the chuck and the maximum winding diameter of the thread on it. eight SP VA 4Hen Phage.1 Aa Faye. 2 PhieA Sign Figz Fig 5