阅读说明：本技术 一种喷丝板加工用扩孔针 (Reaming needle for spinneret plate machining ) 是由 张晓斌 石锡祥 张金贤 雷杰 于 2020-07-08 设计创作，主要内容包括：本发明公开一种喷丝板加工用扩孔针,应用于加工喷丝板的喷丝孔,包括针杆,针杆的下端设有一能伸入到喷丝板的预制通孔内并对预制通孔的内壁进行挤压扩孔使形成喷丝孔的扩孔作用部。本发明通过扩孔针的扩孔作用部能对喷丝板上的预制通孔内壁进行挤压扩孔,使在喷丝孔内壁上形成有与喷丝孔内壁一体成型的、能提高喷丝孔内壁硬度的致密层以提高喷丝板的使用寿命。(The invention discloses a reaming needle for processing a spinneret plate, which is applied to processing a spinneret hole of the spinneret plate and comprises a needle rod, wherein the lower end of the needle rod is provided with a reaming action part which can extend into a prefabricated through hole of the spinneret plate and extrude and ream the inner wall of the prefabricated through hole to form the spinneret hole. The invention can extrude and ream the inner wall of the prefabricated through hole on the spinneret plate through the reaming action part of the reaming needle, so that a compact layer which is integrally formed with the inner wall of the spinneret hole and can improve the hardness of the inner wall of the spinneret hole is formed on the inner wall of the spinneret plate, thereby prolonging the service life of the spinneret plate.)

1. The utility model provides a spinneret processing is with reaming needle, is applied to spinneret orifice (41) of processing spinneret (4), its characterized in that: the spinneret plate comprises a needle rod (1), wherein the lower end of the needle rod (1) is provided with a hole expansion action part (2) which can stretch into a prefabricated through hole of a spinneret plate (4) and extrude and expand the inner wall of the prefabricated through hole to form a spinneret hole (41).

2. The reaming needle for spinneret processing according to claim 1, characterized in that: the reaming action part (2) comprises a first round table (21), a first ball table (22), a cylinder (23), a second ball table (24) and a second round table (25), and the first round table (21), the first ball table (22), the cylinder (23), the second ball table (24) and the second round table (25) are sequentially connected in a smooth transition mode from top to bottom to form a waist-drum-shaped structure with thick middle and thin two ends.

3. The reaming needle for spinneret processing according to claim 2, characterized in that: the diameter of the lower bottom surface of the second round platform (25) is slightly smaller than the preset diameter of the prefabricated through hole in the spinneret plate (4), and the diameter of the cylinder (23) is slightly larger than the preset diameter of the prefabricated through hole in the spinneret plate (4).

4. The reaming needle for spinneret processing according to claim 3, characterized in that: the diameter of the cylinder (23) is 0.2 mm-0.5 mm, and the height of the cylinder (23) is 0.01 mm-0.1 mm.

5. The reaming needle for spinneret processing according to claim 4, wherein: the diameter of the cylinder (23) is 0.3mm, and the height of the cylinder (23) is 0.04 mm.

6. The reaming needle for spinneret processing according to claim 5, wherein: the diameter of the cylinder (23) is configured to be 0.01mm to 0.04mm larger than the preset diameter of the preformed through hole on the spinneret plate (4).

7. The reaming needle for spinneret processing according to claim 6, wherein: the taper of the second round platform (25) is configured to be 1: 5-3: 5.

8. The reamer needle for processing a spinneret plate according to any one of claims 1 to 7, wherein: the reaming needle for processing the spinneret plate further comprises a needle handle (3), and the upper end of the needle rod (1) is connected with the needle handle (3).

9. The reaming needle for spinneret processing according to claim 8, wherein: the needle handle (3), the needle rod (1) and the hole expansion action part (2) are integrally processed and formed by hard metal materials.

Technical Field

The invention relates to the technical field of spinneret plate processing tools, in particular to a reaming needle for spinneret plate processing.

Background

The processing process of the spinneret holes of the existing spinneret plate is generally as follows: firstly, positioning a spinneret plate body, then fixing points and punching holes on a punching horizontal position part reserved on the spinneret plate body to form spinneret holes, then detaching and cleaning the spinneret plate body, then repositioning the spinneret plate body and sharpening the punching horizontal position part, then detaching and cleaning the spinneret plate body again, then polishing the inner wall of each spinneret hole in a fluid polishing mode, and finally deburring. The hardness of the hole wall of the spinneret hole of the spinneret plate manufactured by the processing method is not strong enough, and the service life of the spinneret plate is short in practical use, so that the whole spinneret plate needs to be replaced about two weeks, and the production cost is high. Chinese document CN101177793 (application date: 14/05/2008) discloses a spinneret plate for melt spinning, wherein the surface or inner surface of the spinneret plate is covered with a nano-scale or sub-nano-scale oxide film with a thickness of 0.8-28 μm, or a thin metal layer with a thickness of 0.1-0.25 mm is embedded in the spinneret hole of the spinneret plate. Because the surface or the inner surface of the spinneret plate of the technical scheme is covered with the nano-scale or sub-nano-scale oxide film or the metal thin layer is embedded in the spinneret orifice, the degradation and the degeneration of the molten polymer passing through the spinneret plate can be avoided, the damage of corrosive substances and impurities of the melt to the inner surface of the spinneret orifice can be avoided, the service life of the spinneret plate is prolonged, and the rejection rate of fibers is reduced. However, in the technical scheme, a nano-scale or sub-nano-scale oxide film with the thickness of 0.8-28 mu m is covered on the surface or the inner surface of the spinneret plate, or a metal thin layer with the thickness of 0.1-0.25 mm is embedded in a spinneret orifice of the spinneret plate, so that the processing process is complex, and the processing cost is high.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the reaming needle for processing the spinneret plate, which can extrude and ream the inner wall of the prefabricated through hole on the spinneret plate through the reaming action part of the reaming needle, so that the compact layer which is integrally formed with the inner wall of the spinneret hole and can improve the hardness of the inner wall of the spinneret hole is formed on the inner wall of the spinneret hole, and the service life of the spinneret plate is prolonged.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a reaming needle is used in spinneret processing, is applied to the spinneret orifice of processing spinneret, includes the needle bar, and the lower extreme of needle bar is equipped with one and can stretch into in the prefabricated through-hole of spinneret and extrude reaming messenger and form the reaming effect portion of spinneret orifice to the inner wall of prefabricated through-hole.

Further, reaming effect portion includes first round platform, first ball platform, cylinder, second ball platform and second round platform, and first round platform, first ball platform, cylinder, second ball platform and second round platform are smooth transition connection in proper order from top to bottom and form thick in the middle of, the slim waist drum-shaped structure in both ends.

Furthermore, the diameter of the lower bottom surface of the second round platform is slightly smaller than the preset diameter of the prefabricated through hole in the spinneret plate, and the diameter of the cylinder is slightly larger than the preset diameter of the prefabricated through hole in the spinneret plate.

Furthermore, the diameter of the cylinder is 0.2 mm-0.5 mm, and the height of the cylinder is 0.01 mm-0.1 mm.

Further, the diameter of the cylinder was 0.3mm, and the height of the cylinder was 0.04 mm.

Further, the diameter size of the cylinder is configured to be 0.01mm to 0.04mm larger than the preset diameter size of the preformed through hole on the spinneret plate.

Furthermore, the taper of the second round table is configured to be 1: 5-3: 5.

Further, the reaming needle for processing the spinneret plate further comprises a needle handle, and the upper end of the needle rod is connected with the needle handle.

Further, the needle handle, the needle rod and the hole expansion action part are integrally processed and formed by hard metal materials.

The reaming needle for processing the spinneret plate has the advantages that:

1. when the hole expanding action part of the hole expanding needle extrudes and expands the prefabricated through hole of the spinneret plate, a compact layer which is integrally formed with the inner wall of the spinneret hole and can improve the hardness of the inner wall of the spinneret hole can be formed on the inner wall of the spinneret hole so as to prolong the service life of the spinneret plate.

2. The reaming action part is of a waist drum-shaped structure, so that when the reaming action part goes deep into the prefabricated through hole of the spinneret plate for extrusion reaming, the part above the cylinder of the reaming action part does not directly contact with the hole wall, the friction action of the reaming action part and the hole wall can be reduced, and the reaming action part of the reaming needle can extrude and ream the inner wall of the prefabricated through hole on the spinneret plate without high-strength pressure.

Drawings

Fig. 1 is a schematic perspective view of a reamer needle according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

FIG. 3 is a front view of a reamer needle according to an embodiment of the present invention.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Fig. 5 is a cross-sectional view showing the structure of a spinneret after reaming by the reaming needle according to the embodiment of the present invention.

Fig. 6 is a partially enlarged view of fig. 5 at C.

Description of reference numerals:

1. the needle bar 2, the reaming action part 21, the first round table 22, the first ball table 23, the cylinder 24, the second ball table 25, the second round table 3, the needle handle 4, the spinneret plate 41, the spinneret hole 42 and the compact layer.

Detailed Description

The invention is further described with reference to the following figures and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 6, in the present embodiment, a reaming needle for processing a spinneret plate 4 is applied to process a spinneret hole 41 of a spinneret plate 4, and includes a needle rod 1, wherein a reaming action portion 2 capable of extending into a preformed through hole of the spinneret plate 4 and performing extrusion reaming on an inner wall of the preformed through hole to form the spinneret hole 41 is disposed at a lower end of the needle rod 1. When the pre-fabricated through hole of the spinneret plate 4 is extruded and reamed by the reaming part 2 of the reaming needle of the embodiment, the compact layer 42 which is integrally formed with the inner wall of the spinneret hole 41 and can improve the hardness of the inner wall of the spinneret hole 41 can be formed on the inner wall of the spinneret hole 41 to prolong the service life of the spinneret plate 4.

Referring to fig. 4 to 6, in the present embodiment, preferably, the hole enlarging acting portion 2 includes a first circular truncated cone 21, a first ball table 22, a cylinder 23, a second ball table 24, and a second circular truncated cone 25, and the first circular truncated cone 21, the first ball table 22, the cylinder 23, the second ball table 24, and the second circular truncated cone 25 are connected in a smooth transition manner from top to bottom in sequence to form a waist-drum-shaped structure with a thick middle and thin two ends. In this embodiment, reaming effect portion 2 is waist drum-shaped structure, and like this, when reaming effect portion 2 deepened and extrudeed in the prefabricated through-hole of spinneret 4, the part on the cylinder 23 of reaming effect portion 2 will not with pore wall direct contact, can reduce the frictional action of reaming effect portion 2 and pore wall, need not to utilize high strength pressure just can make reaming effect portion 2 of reaming needle extrude the reaming to the prefabricated through-hole inner wall on the spinneret 4.

Referring to fig. 4 to 6, in the embodiment, the diameter of the lower bottom surface of the second circular truncated cone 25 is slightly smaller than the preset diameter of the preformed through hole on the spinneret plate 4, and the diameter of the cylinder 23 is slightly larger than the preset diameter of the preformed through hole on the spinneret plate 4. Preferably, the diameter of the cylinder 23 is 0.2mm to 0.5mm, and the height of the cylinder 23 is 0.01mm to 0.1 mm. And the diameter size of the cylinder 23 is configured to be 0.01mm to 0.04mm larger than the preset diameter size of the prepared through-hole on the spinneret 4.

Referring to fig. 4 to 6, in the present embodiment, preferably, the diameter of the cylinder 23 is 0.3mm, and the height of the cylinder 23 is 0.04 mm. The pre-set diameter size of the pre-formed through holes on the spinneret plate 4 is configured to be 0.28mm, it being understood that the diameter size of the cylinder 23 is configured to be 0.02mm larger than the pre-set diameter size of the pre-formed through holes on the spinneret plate 4.

Referring to fig. 4 to 6, in the present embodiment, the taper of the second truncated cone 25 is configured to be 1:5 to 3: 5. Preferably, in the present embodiment, the taper of the second round table 25 is configured to be 2: 5. In the process of extending the reaming action part 2 into the prefabricated through hole on the spinneret plate 4 for extrusion reaming, the taper of the second circular truncated cone 25 at the lower end of the reaming action part 2 needs to be reasonably configured, and it can be understood that when the taper of the second circular truncated cone 25 is larger, the second circular truncated cone 25 is more blunt, the inclination angle of the side surface of the second circular truncated cone 25 relative to the vertical direction is larger, and the change of the outer diameter is fast; and when the taper of the second round platform 25 is smaller, the second round platform 25 is sharper, the inclination angle of the side surface of the second round platform relative to the vertical direction is smaller, and the change of the outer diameter is gentle. Therefore, in the extrusion reaming process, if the taper of the second circular truncated cone 25 is too large, the inner wall of the preformed through hole on the spinneret plate 4 will be rapidly extruded and enlarged by the reaming action part 2, which may cause damage to the hole wall and further reduce the service life of the spinneret plate 4, while if the taper of the second circular truncated cone 25 is too small, although the process of extruding and enlarging the inner wall of the preformed through hole of the spinneret plate 4 may be more gradual and may reduce the possibility of damage to the hole wall, the processing speed may be greatly affected, which may cause the processing cycle to be lengthened, therefore, in this embodiment, it is preferable to configure the taper of the second circular truncated cone 25 as 2:5, which may reduce the possibility of damage to the hole wall in the extrusion reaming process as much as possible on the premise of ensuring the extrusion processing efficiency, and may further improve.

Referring to fig. 1 and 3, in the embodiment, preferably, the reaming needle for spinneret plate processing further includes a needle handle 3, and the upper end of the needle rod 1 is connected to the needle handle 3. Preferably, the needle shaft 3, the needle bar 1 and the hole enlarging function portion 2 are integrally formed of a hard metal material. Preferably, the needle handle 3, the needle bar 1 and the reaming action part 2 are integrally formed by tungsten steel, however, those skilled in the art will understand that in other embodiments, the needle handle 3, the needle bar 1 and the reaming action part 2 can be integrally formed by other materials having the same performance as tungsten steel, and are not limited to tungsten steel disclosed in the present embodiment.

The extrusion reaming process comprises the following steps: firstly, a plurality of prefabricated through holes with the diameter of 0.28mm are prefabricated on a spinneret plate 4 by a drill, then a hole expanding action part 2 of a hole expanding needle is aligned with each prefabricated through hole and extends into the hole, and the hole diameter of each prefabricated through hole is expanded to form a spinneret hole 41 with the diameter of 0.3mm through the extrusion and hole expanding action of a cylinder 23 with the diameter of 0.3mm on the hole expanding action part 2 on the inner wall of the prefabricated through hole. Wherein, in order to improve the reaming precision, can be with the needle handle 3 fixed connection of reaming needle on the arm, drive the reaming needle through the arm and extrude the reaming to each prefabricated through-hole on the spinneret 4 automatically one by one.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and these modifications or substitutions do not make the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention, so that all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.