CN110241466B

CN110241466B - Cutter head assembly and spinning panel scraper

Info

Publication number: CN110241466B
Application number: CN201910573411.2A
Authority: CN
Inventors: 卢思源
Original assignee: Suzhou Langke Intelligent Manufacturing Co ltd
Current assignee: Suzhou Langke Intelligent Manufacturing Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2024-06-18
Anticipated expiration: 2039-06-28
Also published as: CN110241466A

Abstract

The invention discloses a cutter head assembly, which comprises a cutter seat and at least two blades, wherein the cutter seat is arranged along an axis in a rotating way, the at least two blades are arranged on the cutter seat, when the cutter head assembly rotates to work, the cutting edge of each blade rotates along the axis of the cutter seat to form a round or circular rotating track, the rotating tracks of all the blades are overlapped to form a scraping track of the cutter head assembly, the outer diameter of the scraping track is d, the at least two blade groups are included, each blade group comprises at least one blade with the same rotating track of the cutting edge, at least one adjacent blade groups are overlapped with each other, and the cutting edge length of at least one blade is less than or equal to 1/3 d.

Description

Cutter head assembly and spinning panel scraper

Technical Field

The invention relates to the field of spinning equipment, in particular to a cutter head assembly and a spinning panel scraper.

Background

In the chemical fiber production process, polyester melt (about 300 ℃) is rapidly sprayed out from a spinning panel with a plurality of spinning holes under the action of pressure, and then cooled into filaments under the action of cooling air. Under the working environment of high temperature and high pressure, generally about 24 hours, polyester sublimates, degradation products and dirt formed after the crystal of a release agent (silicone oil) is mixed can be accumulated on the spinneret panel around the spinneret hole, and the dirt can slowly block small holes on the spinneret panel after accumulation, so that the problem of insufficient roundness or complete blocking of the small holes is caused.

At present, a cutter head device of a spinning panel scraper (patent publication number: CN 207109162U) is provided, which can enable a blade to be well attached to the surface of a spinning panel, and has higher scraping efficiency. However, in the using process, the cutter head still has a certain problem of incomplete scraping: referring to fig. 6, the microscopic surface state of the spinneret plate 6 is not a plane surface due to a deformation of the spinneret plate caused by the high-temperature and high-pressure polyester melt. And because of the problem of machining precision, each different spinning panel has different deformation surfaces, and the cutting edge of the existing scraper 2 is difficult to be completely attached to the surface of the spinning panel 6, so that the same scraper head is difficult to scrape all the spinning panels to a qualified degree at one time. The current solution to this technical problem is to increase the scraping positive pressure between the scraper 2 and the spinneret plate 6, and to deform the scraper 2 and the spinneret plate 6 by increasing the pressure, so that the scraper 2 and the spinneret plate 6 are more attached to each other, but the scraper 2 is easily worn by this way, and the spinneret holes 7 on the spinneret plate 6 deform when used for a long time, so that the service life of the spinneret plate 6 is shortened.

Accordingly, there is a need for a cutter head assembly and a spinneret plate scraper that overcomes the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a cutter head assembly and a spinning panel scraper with good scraping effect.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a tool bit subassembly, its includes along the axis rotation setting the blade holder and set up at least two scrapers on the blade holder the tool bit subassembly rotates during operation, every the cutting edge of scraper along the axis of blade holder rotates back shaping circular or circular annular rotation orbit, all the rotation orbit of scraper overlaps the back and forms the scraping orbit of tool bit subassembly, the external diameter of scraping the orbit is d, the scraper includes two at least scraper groups, every the scraper group includes at least one that the rotation orbit of cutting edge is the same the scraper, and adjacent at least partial coincidence of rotation orbit of scraper group has at least one the cutting edge length of scraper is less than or equal to 1/3d.

Preferably, the length of the edge of at least one scraper in each scraper group is less than or equal to 1/3d.

Further preferably, the blade head assembly has a plurality of blades having a length of the blade edges of 1/3d or less, and a rotational locus of the blades covers the scraping locus.

Preferably, the blade edge of the scraper is a straight blade edge.

Preferably, the number of doctor blade sets is 2-3.

Preferably, the number of the scrapers of the scraper group is 2-4

Preferably, the number of blades of each of said blade sets is the same.

Preferably, the blades of each blade group are uniformly arranged in a circumferential direction around the axis of the blade holder.

Preferably, an adjusting device for adjusting the distance and the angle between the scraper and the surface of the tool apron is arranged between the scraper and the tool apron.

A spinneret plate scraper having the above-described cutter head assembly.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

Because the length of the blade edge of the scraper is shorter, the scraper can better attach to the surface of the spinning panel compared with the scraper with the existing length, can better scrape the spinning panel and can not damage the spinning panel.

Drawings

FIG. 1 is a schematic view of a cutter head assembly according to a first embodiment;

FIG. 2 is a schematic view of a blade scraping area according to the first embodiment;

FIG. 3 is a schematic view of a blade scraping area of a second embodiment;

FIG. 4 is a schematic view of a blade scraping area of a third embodiment;

FIG. 5 is a schematic view of a blade scraping area of a fourth embodiment;

FIG. 6 is a schematic view of a prior art doctor blade doctoring;

fig. 7 is a schematic view of the doctor blade of the invention.

In the above figures: 1. a tool apron; 2. a scraper; 3. a blade; 4. an adjusting device; 5. scraping the area; 6. a spin-coating panel; 7. a spinneret orifice; A-J, scraper group.

Detailed Description

The invention is further described below with reference to an embodiment shown in the drawings in which:

Embodiment one: referring to fig. 1, the present embodiment discloses a cutter head assembly of a spinneret plate scraper. The device comprises a disc-shaped cutter holder 1 and 8 scrapers 2 arranged on the cutter holder 1, wherein the disc-shaped cutter holder 1 is arranged in a rotating manner, and the distance and the angle between the scrapers 2 and the surface of the cutter holder 1 are adjusted through an adjusting device 4 with an elastic piece, so that the cutting edge 3 of the scrapers 2 can be better attached to the surface of a spinning panel.

Specifically, the diameter of the tool holder 1 of the present embodiment is 80mm, the blades 3 of the doctor blade 2 are all straight blades 3, and the lengths of the blades 3 are 28mm. The doctor blades 2 are divided into 3 doctor blade groups, namely a doctor blade group A which is arranged close to the axis of the tool apron 1 and comprises two doctor blades 2, a doctor blade group B which is arranged close to the avoidance doctor blade group A and comprises two doctor blades 2, and a doctor blade group C which is arranged at the periphery and comprises 4 doctor blades 2, as shown in the figure 1. Referring to fig. 2, the rotational trajectories of the blade edges 3 of the blade group a and the blade group B have partially overlapping portions, and the blade group C simultaneously has partially overlapping portions with the rotational trajectories of the blade edges 3 of the blade group a and the blade group B.

When the cutter head assembly works, after the rotation tracks of all the cutter blades 3 are overlapped, an annular scraping area 5 with the diameter of 100mm is formed on the spinning panel.

Embodiment two: referring to fig. 3, the cutter head assembly of this embodiment is substantially the same as the first embodiment except that: the cutter head assembly of this embodiment has 3 blade groups, namely a blade group D of 3 blades 3 of 65mm in length, a blade group E of 3 blades 3 of 30mm in length, and a blade group F of 3 blades 3 of 30mm in length.

When the cutter head assembly of the embodiment works, after the rotation tracks of all the cutter blades 3 are overlapped, an annular scraping area 5 with the diameter of 120mm is formed on the spinning face plate.

Embodiment III: referring to fig. 4, the cutter head assembly of this embodiment is substantially the same as the first embodiment except that: the cutter head assembly of this embodiment has two blade groups, namely a blade group G of 3 blades 3 of 40mm in length and a blade group H of 3 blades 3 of 40mm in length.

Embodiment four: referring to fig. 5, the cutter head assembly of this embodiment is substantially the same as the first embodiment except that: the blades 3 of the doctor blade 2 of the present embodiment are circular arc-shaped and are divided into two doctor blade groups, namely, a doctor blade group I consisting of 1 doctor blade 2 having a length of 30mm and a doctor blade group J consisting of 1 doctor blade 3 having a length of 40 mm.

When the cutter head assembly of the embodiment works, after the rotation tracks of all the cutter blades 3 are overlapped, a circular scraping area 5 with the diameter of 100mm is formed on the spinning face plate.

Referring to fig. 7, in the above embodiment, since the cutter head assembly adopts the scraper 2 with the shorter length of the blade 3, the error of the blade 3 when the blade is attached to the spinneret panel 6 is reduced, so that the gap between the blade 3 and the spinneret panel 6 is smaller, the scraping is more thorough, and the damage to the spinneret panel 6 is smaller.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a tool bit subassembly, its is used for spouting the striking off on silk panel surface, and includes along the axis rotation setting the blade holder and set up two at least scrapers on the blade holder the tool bit subassembly rotates during operation, every the cutting edge of scraper along the axis rotation back shaping circular or circular ring shape rotation orbit of blade holder, all the rotation orbit of scraper overlaps the back and forms the striking off orbit of tool bit subassembly, strike off the external diameter of orbit and be d, its characterized in that: the scraping knife comprises at least two scraping knife groups, each scraping knife group comprises at least one scraping knife with the same rotation track of the cutting edge, at least part of the rotation tracks of the adjacent scraping knife groups are mutually overlapped, and the length of the cutting edge of at least one scraping knife is less than or equal to 1/3d so as to reduce the error of the cutting edge when the cutting edge is attached to the spinning panel;

the length of the edge of at least one scraper in each scraper group is less than or equal to 1/3d;

An adjusting device for adjusting the distance and the angle between the scraper and the surface of the tool apron is arranged between the scraper and the tool apron.

2. A tool bit assembly according to claim 1, wherein: the tool bit assembly is provided with a plurality of scrapers with blades with lengths less than or equal to 1/3d, and the scraping track is covered by the rotating track of the scrapers.

3. A tool bit assembly according to claim 1, wherein: the blade of the scraper is a straight blade.

4. A tool bit assembly according to claim 1, wherein: the number of the scraper groups is 2-3.

5. A tool bit assembly according to claim 1, wherein: the number of the scrapers of the scraper group is 2-4.

6. A tool bit assembly according to claim 1, wherein: the number of blades of each blade group is the same.

7. A tool bit assembly according to claim 1, wherein: the scrapers of each scraper group are uniformly distributed in the circumferential direction around the axis of the cutter holder.

8. A spinneret panel scraper, characterized in that: having a cutter head assembly according to any one of claims 1-7.