CN112062462B

CN112062462B - MPO multifilament wire drawing auxiliary device of super high squareness degree

Info

Publication number: CN112062462B
Application number: CN202010718861.9A
Authority: CN
Inventors: 廖亦戴; 姜博文; 徐昭; 金戈; 张振; 李冬; 黎龙辉; 孙赛林; 周新; 张珈玮
Original assignee: North Night Vision Technology Co Ltd
Current assignee: North Night Vision Technology Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2022-07-08
Anticipated expiration: 2040-07-23
Also published as: CN112062462A

Abstract

The invention provides an MPO multifilament drawing auxiliary device with ultrahigh squareness, which is arranged on the end face of a drawing furnace and comprises an outer clamp; the inner clamp is smaller than the outer clamp in size, and the outer clamp and the inner clamp are diagonally arranged with each other, so that the outer clamp at least partially clamps the inner clamp and a square enclosure is formed between the outer clamp and the inner clamp; the sliding blocks are arranged in the square enclosure, and the sliding blocks are adjacent to each other in pairs to form a square hole in the center position; each edge of outer clamp and interior clamp all is provided with the L type groove that runs through and sets up the mechanism that pushes away in L type inslot, push away tight mechanism and can switch with the release state in L type groove, wherein under the release state, push away tight pole and receive the clamping spring effect, on slider side vertically direction, be located one side of spout, keep contacting and compressing tightly with the slider that corresponds, under the lock state, push away tight pole and overcome clamping spring elasticity and with slider and chucking on the another side in L type groove by the operation to guarantee holistic squareness.

Description

MPO multifilament wire drawing auxiliary device of super high squareness degree

Technical Field

The invention relates to the technical field of MPO (MPO) of microporous optical elements, in particular to an MPO multifilament drawing auxiliary device with ultrahigh squareness.

Background

The micro-pore optics (MPO) is a glancing incidence type high-energy ray focusing optical element and can focus photons in wave bands such as x-ray and ultraviolet. As shown in fig. 1, a microstructure of MPO, which is a glass sheet having a porous structure and consisting of millions of square micro-pores having a size of the order of micrometers, has an extremely low roughness on the inner wall surfaces of the micro-pores. The MPO shapes can be divided into two types, namely a plane MPO and a spherical surface MPO, wherein the plane MPO can converge divergent light, and the spherical surface MPO can converge parallel light. Among all X-ray optical elements known so far, MPO has a minimum volume and mass while ensuring a large field of view and high resolution.

The multifilament of micropore optical element is drawn and belongs to the field of glass processing, the squareness of MPO multifilament greatly contributes to the angular resolution of MPO, the MPO micropore array structure developed by MPO multifilament with ultrahigh squareness has good characteristics, and the performance indexes such as the angular resolution of MPO are improved. In combination with the drawing process of the MPO multifilament bar shown in fig. 2, namely, the diameter-changing process, the control difficulty of the squareness of the MPO multifilament bar at present is very high, the drawn multifilament bar is difficult to meet the technical requirements in a high-temperature environment, the yield is low, how to ensure that the drawing of the MPO multifilament bar has a stable appearance and the multifilament bar is not damaged is the difficulty of drawing the MPO multifilament bar with ultrahigh squareness at present.

Disclosure of Invention

The invention aims to provide a drawing auxiliary device suitable for drawing an MPO multifilament with ultrahigh squareness, which is used for controlling the ultrahigh squareness during the drawing of a multifilament bar, ensuring the squareness of the drawn multifilament and ensuring that the section size difference (a-b) of the multifilament is within 1 um.

In order to achieve the above object, a first aspect of the present invention provides an ultrahigh squareness MPO multifilament drawing assisting device, which is provided at an end face of a drawing furnace and includes:

an outer clip configured in an L-shape;

an inner clamp configured in an L-shape and having an overall dimension smaller than the outer clamp, the outer and inner clamps being diagonally mounted to each other such that the outer clamp at least partially clamps the inner clamp and forms a square enclosure between the outer and inner clamps;

the sliding blocks are arranged in the square enclosure, the sliding blocks are adjacent to each other in pairs to form a square hole located in the center, and the square hole forms a through hole of the multi-filament rod;

wherein, each edge of the outer clip and the inner clip is provided with a through L-shaped groove and a pushing mechanism arranged in the L-shaped groove, the L-shaped groove penetrates through the sectional planes of the outer clip and the inner clip in the end face direction of the wire drawing furnace, the pushing mechanism comprises a cap arranged on the outer surface of the outer clamp/the inner clamp, a clamping spring arranged in the cap and a pushing rod abutted against the clamping spring, the push rod is arranged to be operable from the surface of the inner/outer clamp to control the switching between its locked state and its released state in the L-shaped groove, wherein in the release state, the push rod is under the action of the clamping spring, is positioned in one side of the sliding groove in the direction vertical to the side surface of the sliding block and keeps in contact with and tightly presses the corresponding sliding block, in the locked state, the push rod is operated to overcome the elastic force of the clamping spring to be clamped with the sliding block on the other side of the L-shaped groove.

Preferably, the outer clip has two equal-length right-angle sides forming a right angle, the free ends of the two right-angle sides are further respectively provided with a wrapping part connected with the right-angle sides at a certain included angle, and the included angle range is 100-135 degrees.

Preferably, the inner clip has two equal length legs forming a right angle, the free ends of the legs having a transition portion adapted to the wrap portion of the outer clip, the wrap portion wrapping around the exterior of the transition portion in a nested fit relationship.

Preferably, the part of the wrapping part, which is jointed with the corresponding right-angled edge, forms a right-angled recess in the angle direction towards the sliding block, and the free end of the wrapping part forms a right-angled rectangle.

Preferably, the transition portion of the inner clip is configured in a Z-shape in cross-section and has three mutually perpendicular sides, a first side forming a first rectangular corner with an intermediate second side being included in the right-angled recess, the intermediate second side forming with a third side of the sides a right-angled rectangle having a second rectangular corner at least partially wrapping around the free end of the wrapping portion.

Preferably, the L-shaped groove has a first groove perpendicular to the side of the slider and a second groove perpendicular to the first groove, wherein in the release state, the tightening rod is located in the first groove, and in the lock state, the tightening rod is clamped in the second groove.

Preferably, the first slot has a length greater than a length of the second slot.

Preferably, the push lever is slidable in the L-shaped groove, and has an operating portion protruding out of the L-shaped groove, the operating portion being provided for operation from the outside to switch the position and state of the push lever.

Preferably, the outer edge of the inner clamp is further provided with a bevel edge at the position where the right-angle edges of the inner clamp are combined, the outer side of the bevel edge is correspondingly provided with a clamping block, the clamping block is inserted into a hole at a preset position on the end face of the wire drawing furnace through a fixing column to be fixed, the end faces of the bevel edge opposite to the clamping block are uniformly and correspondingly provided with accommodating holes, and each pair of accommodating holes is internally provided with a return spring.

Preferably, the slider is a cuboid quartz slider.

Preferably, the inner clip and the outer clip are made of stainless steel.

Thus, the invention has significant advantages over the prior art:

1. the quartz sliding block of the multifilament bar is accurately hooped through the inner clamp and the outer clamp, the polished quartz sliding block is particularly selected to be extremely low in surface roughness, the contact surface of the sliding block and the multifilament bar is extremely smooth, the surface of the multifilament bar cannot be damaged, the quartz sliding block is high in softening point and extremely low in expansion coefficient, the sliding block cannot be slightly deformed in a high-temperature environment, and then the multifilament bar is guaranteed to be square all the time;

2. the inner clamp and the outer clamp which tighten the sliding blocks can be made of stainless steel, the inner side surfaces of the inner clamp and the outer clamp are in contact with the side surfaces of the sliding blocks, 4 sliding blocks are guaranteed to be extruded at the same time, and then the extruded composite wire rod is guaranteed to be square;

3. the clamping block which clamps the inner clamp and the outer clamp tightened by the sliding block is provided with a spring hole, a spring is arranged in the spring hole, one end of the spring is contacted with the end face of the spring hole of the clamping block, the other end of the spring is contacted with the inner clamp, the inner clamp and the outer clamp can be elastically clamped through the spring, the multifilament bar can smoothly pass through the auxiliary device when the size of the multifilament bar is slightly increased, and the multifilament bar cannot be scratched on the surface because the multifilament bar is large in size and difficult to pass through the auxiliary device;

4. a interior clamp, outer clamp all design for tightening up the slider have L type spout, place push rod and clamping spring in this spout, and one end face and the spring contact of push rod, another terminal surface and slider contact. When the size of the compound filament rod is increased slightly, the spring is extruded to slide in the sliding groove, and when the size of the multifilament rod is recovered to be normal, the pusher slides in the sliding groove under the action of the spring, so that the end face of the pusher is always tightly attached to the sliding block, the seamless attachment of the 4 sliding blocks is ensured, the squareness of the compound filament rod is improved, and the multifilaments after being drawn at high temperature are ensured to have higher squareness.

5. The drawing auxiliary device suitable for drawing the MPO multifilament with the ultrahigh squareness can be deployed in the drawing of a multifilament bar, the squareness of the drawn multifilament is ensured, and the section size difference (a-b) of the multifilament is within 1 um.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments according to the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a microstructure diagram of MPO.

FIG. 2 is a schematic drawing of an MPO multifilament rod drawing process.

FIG. 3 is a schematic structural view of an ultrahigh squareness MPO multifilament drawing auxiliary device of the present invention.

FIG. 4 is an axial view of the ultrahigh squareness MPO multifilament drawing auxiliary device of the present invention.

FIG. 5 is a top view of the ultrahigh squareness MPO multifilament drawing auxiliary device of the present invention.

FIG. 6 is a partial schematic view of the slider portion of the ultrahigh squareness MPO multifilament drawing assisting device of the present invention.

FIG. 7 is a schematic view of the pushing mechanism of the ultrahigh squareness MPO multifilament drawing auxiliary device of the present invention.

FIG. 8 is a partially schematic view of the return spring portion of the ultrahigh squareness MPO multifilament drawing aid of the present invention.

FIG. 9 is a front view of the outer clip of the ultrahigh squareness MPO multifilament drawing assisting device of the present invention.

FIG. 10 is a front view of the inner clip of the ultrahigh squareness MPO multifilament drawing assisting device of the present invention.

FIG. 11 is an isometric view of a push bar of the ultrahigh-squareness MPO multifilament drawing aid.

Fig. 12 is an isometric view of the clamping block of the ultrahigh-aspect MPO multifilament drawing aid of the present invention.

Detailed Description

In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. Additionally, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.

In connection with the ultra-high squareness MPO multifilament drawing auxiliary devices of the exemplary embodiments shown in fig. 3 to 8, the MPO multifilament drawing auxiliary devices are disposed at the end face of the drawing furnace, and are used for drawing ultra-high squareness MPO multifilaments in a high temperature environment. When traditional multifilament of drawing, at the seam department that multifilament stick and stove circle were sealed and fill raw sticky tape, because of raw sticky tape material is polytetrafluoroethylene, material self has high temperature resistant incombustible and advantage such as smooth, can regard as filling material, nevertheless raw sticky tape easily takes place to shrink and sclerosis under high temperature, leads to the regional square appearance of compound silk stick that it encloses to suffer destruction and then leads to the multifilament squareness precision of drawing to be relatively poor.

In the embodiment of the invention, the ultrahigh squareness is ensured by adopting the inner clamp, the outer clamp and the clamping block, and meanwhile, the polished slide block made of quartz material is used for enclosing the multifilament bar into a square shape, and on the basis of not damaging the advantages of the surface smoothness of the multifilament bar and the like, the drawn multifilament is ensured to have ultrahigh-precision squareness.

As shown in fig. 3 to 5, the ultrahigh squareness auxiliary device for drawing MPO multifilament according to the present invention includes an auxiliary clamping device composed of an outer clamp 10, an inner clamp 20, and a slider 30. Referring to fig. 3 and 6, four sliders 30 surround a square hole formed in the center of the slider to clamp the square multifilament bar 100 and ensure squareness of the bar entering the drawing furnace below.

The four sliders 30 are all made of quartz materials with low expansion coefficients, are made into cuboid shapes, and particularly, the surface roughness of the quartz sliders is extremely low after polishing and grinding, the contact surfaces of the sliders and the multifilament bars are extremely smooth, and the surfaces of the multifilament bars cannot be damaged.

In fig. 3, reference numeral 110 denotes the drawn ultrahigh squareness multifilament. Reference numeral 200 denotes a drawing furnace.

In the embodiment of the invention, the wire drawing furnace is just a wire drawing furnace in the prior art.

Referring to the figures, the outer clip 10 and the inner clip 20 are preferably both made of stainless steel and are each in the shape of a right angle L.

The overall dimensions of the inner clamp 20 are smaller than the outer clamp, so that when installed, the outer clamp 10 and the inner clamp 20 are mounted diagonally to each other, such that the outer clamp at least partially clamps the inner clamp and encloses between the outer clamp and the inner clamp, forming a square enclosure in the middle, and the slider 30 is located within the square enclosure and is constrained and limited by the outer clamp and the inner clamp.

Referring to fig. 3 to 5 and fig. 6, the plurality of sliders are adjacent to each other two by two to form a centrally located square hole which constitutes a passing hole of the multifilament bar 100.

As shown in fig. 3 and fig. 9 and 10, an L-shaped groove 50 is formed through each side of the outer clip 10 and the inner clip 20, and a tightening mechanism 60 is disposed in the L-shaped groove.

The L-shaped groove 50 penetrates through the sectional planes of the outer clamp and the inner clamp in the direction of the end face of the wire drawing furnace. As shown, the L-shaped groove has long and short sides, i.e., a first groove 51 perpendicular to the side of the slider 30 and a second groove 52 perpendicular to the first groove.

As shown, the pushing mechanism comprises a cap 61 arranged on the outer surface of the outer/inner clamp, a clamping spring 62 arranged inside the cap, and a pushing lever 63 abutting against the clamping spring, the pushing lever being arranged to be operable from the surface of the inner/

outer clamp

10, 20 to control the switching of the locking and releasing states thereof in the L-shaped groove. Preferably, the tightening lever 63 has an operating portion 63A protruding out of the L-shaped groove to facilitate position and state adjustment and switching by an operator from the outside.

In connection with the illustration, the thrust rod has a first contact portion 63B for thrusting against the slider and a second contact portion 63C for engaging to the clamping spring. In order to ensure the thrust surface, the two contact parts are both in a cylindrical structure, and the sectional dimension of the first contact part is larger than that of the second contact part.

As shown in fig. 7 and 8, in the released state, the tightening rod 63 is under the action of the clamping spring 62, and is located in one side of the sliding groove in the direction perpendicular to the side surface of the sliding block 30, and keeps in contact with and pressed against the corresponding sliding block; in the locking state, the pushing rod is operated to overcome the elastic force of the clamping spring and is clamped with the sliding block on the other side of the L-shaped groove.

In combination, the locking lever is shown in a released condition in which it is located in the first slot 51 and in a locked condition in which it is captured in the second slot 52.

Preferably, the length of the first slot is greater than the length of the second slot.

So, when pushing rod 62 was in the release position, clamping spring 62 was in the extension state, and clamping spring will push rod top tightly for paste each other tightly between each slider, enclose the multifilament stick into in a square region, thereby guarantee the squareness of multifilament stick. When the switching is needed, the pushing rod is pressed towards the direction of the clamping spring by an operator to be separated from the sliding block, and is transversely pushed into the second slot position to be clamped.

Preferably, the outer clip 10 has two equal-length right-angle sides 11 forming a right angle, and wrapping portions 12 connected with the right-angle sides at a certain included angle are respectively arranged at free ends of the two right-angle sides, and the included angle range is 100 degrees and 135 degrees.

The inner clip 20 has two equal length cathetuses 21 forming a right angle, the free end of the cathetuses 21 has a transition portion 22 fitting with the wrapping portion of the outer clip, the wrapping portion 12 wraps outside the transition portion 22 and the two are in a nesting fit relationship.

As shown in connection with fig. 5, the part of the wrap 12 that engages the corresponding cathetus forms a right-angled recess 13 in the angular direction towards the slider, and the free end 14 of the wrap is rectangular at right angles.

With reference to fig. 5, the transition portion 22 of the inner clip 20 is Z-shaped in cross-section and has three mutually perpendicular sides, a first corner of convex form formed by the first side 22A and the second side 22B of the middle being included in the right-angled recess, the second side 22B of the middle forming with the third side 22C of the edge a second corner of concave form, which is a right-angled rectangle at least partially enveloping the free end of the envelope. Therefore, a right-angle nesting and limiting relation is formed between the two, and the squareness of the center is guaranteed.

Referring to fig. 12, an inclined edge 23 is further formed at the position where the outer edge of the inner clamp 20 is combined with the right-angle edge, a clamping block 80 is correspondingly arranged outside the inclined edge, and the clamping block 80 is inserted into a hole at a predetermined position on the end surface of the wire drawing furnace through a fixing column 81 for fixing. Correspondingly, receiving openings 83 are provided uniformly in a corresponding pair on the end face of the oblique side opposite the clamping block, in each pair of receiving openings a return spring 82 is provided.

In this way, when the multifilament is drawn, the multifilament bar is slowly pushed into the drawing furnace by the pushing mechanism, and since the multifilament bar is bundled by the monofilaments, the single-filament scarves are not absolutely standard (zero error), and therefore, the outer dimensions of the multifilament bar slightly fluctuate in the axial direction. With reference to fig. 12, the invention adopts the return spring as a guarantee execution component for resetting after the sliding block is expanded due to the size fluctuation of the multifilament rod, the resetting is performed after the size fluctuation of the yarn diameter, the sliding block is required to be reset, that is, the multifilament rod is always surrounded by the sliding block, the multifilament rod can be guaranteed to be extruded in real time, and the multifilament rod can be guaranteed to be always extruded into a square state in the whole multifilament drawing process by combining the guarantee of the squareness, so that the drawn multifilament has the requirement of ultrahigh squareness.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. The MPO multifilament wire-drawing auxiliary device with ultrahigh squareness is characterized in that the MPO multifilament wire-drawing auxiliary device is arranged on the end face of a wire-drawing furnace and comprises:

an outer clip configured in an L-shape;

wherein, each edge of the outer clip and the inner clip is provided with a through L-shaped groove and a pushing mechanism arranged in the L-shaped groove, the L-shaped groove penetrates through the sectional planes of the outer clip and the inner clip in the end face direction of the wire drawing furnace, the pushing mechanism comprises a cap arranged on the outer surface of the outer clamp/the inner clamp, a clamping spring arranged in the cap and a pushing rod abutted against the clamping spring, the push rod is arranged to be operable from the surface of the inner/outer clamp to control the switching between its locked state and its released state in the L-shaped groove, wherein in the release state, the push rod is under the action of the clamping spring, is positioned in one side of the sliding groove in the direction vertical to the side surface of the sliding block and keeps in contact with and pressed against the corresponding sliding block, in the locked state, the push rod is operated to overcome the elastic force of the clamping spring to be clamped with the sliding block on the other side of the L-shaped groove.

2. The MPO multifilament drawing auxiliary device of claim 1, wherein the outer clip has two equal-length right-angle sides forming a right angle, the free ends of the two right-angle sides are respectively provided with a wrapping part connected with the right-angle sides at a certain included angle, and the included angle ranges from 100 degrees to 135 degrees.

3. The MPO multifilament drawing auxiliary device of claim 2, wherein the inner clip has two equal length cathetuses forming a right angle, the free end of the cathetuses having a transition portion fitting with the wrapping portion of the outer clip, the wrapping portion wrapping outside the transition portion and in a nested fit relationship.

4. The ultrahigh squareness MPO multifilament drawing aid of claim 3 wherein the regions where the wrap portions engage the corresponding cathetuses form right angle depressions in the angular direction toward the slider, and the free ends of the wrap portions are right angle rectangles.

5. The ultrahigh squareness MPO multifilament drawing aid of claim 4 wherein the transition portion of the inner clip is configured in a Z-shape in cross-section and has three mutually perpendicular sides, a first rectangular corner formed by a first side and an intermediate second side being included in the right-angled depression, the intermediate second side and an edge third side forming a right-angled rectangle having a second rectangular corner at least partially wrapping the free end of the wrapping portion.

6. The MPO multifilament drawing auxiliary device of claim 1, wherein the L-shaped groove has a first groove perpendicular to the side of the slider and a second groove perpendicular to the first groove, wherein in the release state, the pushing rod is located in the first groove, and in the locked state, the pushing rod is clamped in the second groove.

7. The ultrahigh squareness MPO multifilament drawing aid of claim 6 wherein the length of the first slot is greater than the length of the second slot.

8. The ultrahigh squareness MPO multifilament drawing assist device according to claim 6, wherein the pushing lever is slidable in the L-shaped groove and has an operating portion protruding out of the L-shaped groove, the operating portion being provided for operation from outside to switch a position and a state of the pushing lever.

9. The MPO multifilament drawing auxiliary device of any one of claims 1-8, characterized in that the outer edge of the inner clamp is formed with a bevel edge at the position where the right-angle edges are combined, the outer side of the bevel edge is correspondingly provided with a clamping block, the clamping block is inserted into a hole at a preset position on the end face of the drawing furnace through a fixing column for fixing, the end face of the bevel edge opposite to the clamping block is uniformly provided with a corresponding accommodating hole, and a return spring is arranged in each accommodating hole.

10. The MPO multifilament drawing auxiliary device of any one of claims 1-8, wherein the slide block is a cuboid quartz slide block.