CN85105487A - Vertical cutting method of tubular fibrous product and used device - Google Patents
Vertical cutting method of tubular fibrous product and used device Download PDFInfo
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- CN85105487A CN85105487A CN85105487.0A CN85105487A CN85105487A CN 85105487 A CN85105487 A CN 85105487A CN 85105487 A CN85105487 A CN 85105487A CN 85105487 A CN85105487 A CN 85105487A
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- blade
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- otch
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Abstract
The present invention is related to the cutting tubular fibrous product.More particularly, be applicable to and on such tube wall, cut out together step-like joint-cutting along the longitudinal.
Using such method cuts out two accurate radial slots that slightly stagger on the shell wall, and is cutting out additional cut with the vertical substantially direction in radial cuts plane.
The present invention also comprises the device that produces above-mentioned otch, comprising the cutting tool of being made up of two blades (2,3) and an auxiliary blade (17).
Description
The present invention is related to the cutting tubular fibrous product, more particularly, is the method for vertically cutting along step-like minute tangent plane on the tube wall of this goods and used equipment.
The present invention is particularly suitable for cutting insulation shell, is promptly made and scribbled the cylindric hollow shell of polymer-binder by fiber.
This is that the shell of matrix can be used for pipe insulation with the mineral fibres as glass fibre and so on.This shell is longitudinally cut, launch back wall on pipeline, and then close up and get final product.The shell that but installs like this might produce thermal loss in the two intermarginal slits of leaving of its otch.If the otch plane is radially, the easier generation of so such heat loss.
Therefore, make an effort, in cutting during thermal-insulating pipe case, but otch is made cascaded surface as far as possible so that shell when closing up the both side edges phase lap of otch hand over, thereby the possibility that reduces to form heat bridge suppresses heat loss.
Existing a kind of known method can longitudinally be left the stairstepping otch that connects tube wall on the thermal-insulating pipe case that with the mineral fibres is matrix.
According to this method, cut into certain depth respectively from the inwall and the outside wall surface of shell, thereby form two parallel cuts substantially radially.These two otch are not all cut the shell wall, but an interior edge or a terminal that ends in the shell wall respectively arranged.For the otch on the shell wall is connected, need on shell, apply shearing force in the position near two parallel cuts, this shearing force acts on two materials between the otch, thereby this material is torn.
Yet this method exists the state of tearing the position on some shortcomings, particularly shell can not be satisfactory really.This a part of tube wall on the shell is compressed when cutting twice parallel cuts, is subjected to unexpected stretching then again, and such stress effect causes the separation of fibre structure easily, thereby makes kerf irregular.The actual manufacture process of shell is as follows: coat binding agent on the net what fiber was made into, the fleece that has soaked into binding agent around to a strong mandrel.The reel of coiled is put into the polymerization baking oven so that the binding agent polymerization.The structure that obtains like this has certain cohesion, and is survivable.
The purpose of this invention is to provide a kind of method, with at columnar fibre, particularly be matrix and scribble on the thermal-insulating pipe case of polymer-binder with the mineral fibres, leave step-like otch, thereby reduce to form on the heat-insulation layer possibility of heat bridge, further, the shape of this otch is rule fully, the unlikely change that causes fibre structure.
For this purpose, the present invention proposes a kind of like this method of leaving the stairstepping longitudinal cut, that is: radially cut simultaneously into from the inner surface and the outer surface of shell wall, to form two stagger mutually some distance and otch parallel to each other, and, in shell wall thickness scope, tangentially or perpendicular to the direction of radial slot also cut, cut out an auxiliary incision, so that the inner edge of two radial slots is coupled together.
From a bit, the present invention relates to a kind of method that forms joint-cutting, in order to cut the shell wall, this method requires to make between shell and the cutting tool that relative motion is arranged, and this cutting tool is made up of two main blades and an auxiliary blade.Two main blades distance and being placed in two mutual substantially parallel planes that staggers each other a bit, the outer wall of a blade cuts shell, the inwall of another blade cuts shell, otch all radially, auxiliary blade then be installed in vertical substantially plane, plane, above-mentioned main blade place in so that cut out with the vertical substantially otch of above-mentioned radial slot.
The relative position of auxiliary blade and shell is all remaining within the scope of shell wall thickness this blade through adjusting on the whole Cutting Length, thereby guarantees that auxiliary or tangential otch is all the time in the shell wall.
Another characteristics of the present invention are, its method produces a compression stress that acts on inner and outer wall simultaneously on the shell wall, middle part at the shell wall, on the width roughly suitable with two main blade place interplanar spacings, the synthetic maximum that reaches of this counter stress, simultaneously, owing to auxiliary blade is outwards pushed the fiber tomography open, also to shell wall effect one rightabout stress.Therefore, when cutting operation is finished, that is link to each other with tangential slit when the inner edge of two parallel cuts, make when forming the joint-cutting that connects on the shell wall, the central region of shell wall reaches certain stress equilibrium, thereby has reduced the danger of shell wall destruction.
Moreover except above-mentioned very favourable mechanics effect, the installing auxiliary blade also helps and keeps stablizing of relative position between the shell be cut and the cutter for same constant.
In fact, at present current cutting method, in the method that cuts out the straight line joint-cutting, the relative motion between shell and cutter is by cutter is fixed, and the mode that shell is longitudinally moved obtains.Such condition helps working continuously, and in the process of insulation package, can then cut after with the fiber that soaks into binding agent shell being shaped.
But, when carrying out such operation,, tend to occur abnormal relative motion on plane, blade place and along the longitudinal between the axis of the shell by blade.This unusual motion may occur in two ways: a kind of horizontal motion, another kind are that the position of blade in the shell wall thickness range changes, thereby make cutting irregular, and the joint-cutting that the result obtains on the total length of shell is not a straight line.
Install an accessory, on the direction vertical, apply active force simultaneously with vertical direction of relative movement of blade and shell, with the relative motion guiding between this cutting tool that comes to form for the shell that is cut with by blade, make the needed position of each self-sustaining of shell and cutter, so just can avoid above-mentioned shortcoming well.This accessory both can be in horizontal plane to the stabilization of the relative position of shell and cutter, also can be in vertical plane.
According to a kind of more favourable embodiment of the present invention, can reach equilibrium of forces in the larger context, rather than only be confined to the zone in the middle of the shell wall.In this embodiment, except tangential cutter, adopt four radially blade rather than two cut, thereby both can obtain desired stairstepping joint-cutting, the stress that fibre structure is subjected to is littler.
More particularly, on the certain position in the shell wall thickness range, adopt two additional cutters: one blade sensing shell outer wall, to join with the otch of cutting from outer wall; In another cutting edge point tube, to join with the otch of cutting from inwall.
The manufacture method of cutter for same can guarantee acting in agreement of cutting operation.As previously mentioned, the otch of tangential direction is to be cut out by the auxiliary blade that is contained in perpendicular in the plane of two main blades.Obtain the turnover of needed radial slot for otch from this tangential direction, two fins are housed on auxiliary blade, go up fin for one, be positioned at from the plane, place of the blade of outside wall surface cutting shell, a following fin is positioned at from the plane at the blade place of internal face cutting shell.
The advantage of this embodiment of the present invention is with respect to the plane at half place of wall thickness, can reach gratifying stress equilibrium on the shell wall that is cut.
The present invention also with a kind of like this method of cutting cylindraceous fibre, that is cutting is that the method for matrix and the thermal-insulating pipe case that scribbles polymer-binder is relevant with the mineral fibres, according to the method, on the symmetrical wall of the tube wall that cuts out the stairstepping joint-cutting along the shell y direction, also cut out one straight slits simultaneously, this otch cut the part that the depth degree only accounts for the shell wall thickness.
The invention still further relates to the device of implementing said method.This device comprises by two main blades and the tooling that auxiliary blade is formed.Two main blades are arranged in two substantially parallel planes, some distances that staggers each other, and the root of cutter is fixed on the upper limb of bottom knife, and the knife back of each blade part all is fixed on the blade holder.This auxiliary blade is arranged on the extension of linkage section of two main blades.Can also adorn a blade on the blade holder of bottom knife, be used for the wall of the hollow shell opposite side of this cylindrical shape is cut an into part.
By below in conjunction with accompanying drawing 1 to 7 detailed description of being done, can be more clearly visible further characteristics of the present invention and strong point.Fig. 1 has showed a kind of specific example that cuts the device of shell according to method of the present invention to Fig. 7.Among these figure:
Fig. 1 is schematic front view, the position of expression cutter sweep in shell;
Fig. 2 is the front view of the cutter of design according to the present invention;
Shown in Figure 3 is the kerf of axially seeing from shell;
Fig. 4 is the enlarged drawing of the auxiliary tangential knife blade shown in Fig. 1;
Fig. 5 be among Fig. 4 D to view;
Fig. 6 be among Fig. 2 C to partial view;
Fig. 7 is along A-A line side cross sectional view among Fig. 2.
How Fig. 1 implements if helping to understand cutting method of the present invention.The cutter 1 of illustrated reality comprises two blades 2 and 3, and blade 2 is fixed on the blade holder 4 that links to each other with a blade support, and this blade support does not draw, and 3 on blade is contained on the blade holder 5.In this embodiment, be that cutter is fixed, do along the moving of its longitudinal axis 7 and drive the shell 6 that is cut by the unillustrated mechanism of a cover, its direction of motion such as arrow F show, and obtain relative motion between shell 6 and the cutter with this.Two blades 2 and 3 are separated by joint face P.By the unillustrated suitable mechanism of a cover, blade and blade support can be moved, in a vertical plane so that the position of cutter is regulated in the wall thickness of Qie Ge shell and position as required.
The pipe thickness of shell 6 is, is to carry out on two positions of its tube wall to its cutting, i.e. position 8 and 9.Connect plane P preferably be in corresponding to tube wall 8 thickness half, promptly be about the position of 1/2e, so that tangential knife blade can be aimed at the middle part of tube wall.From accompanying drawing as seen, on blade holder 5, the back of blade 2 has installed a blade 10 additional, is used for cutting out on tube wall 9 straight slits 21(Fig. 3 of a certain depth).
Method proposed by the invention mainly is the cutting that is related to tube wall 8, so described herein focusing on by on blade 2 and 3 cutters of being formed.Blade 2 and 3, and blade 10, each self-contained blade part 11,12 and 13 that has sloping edge 14,15,16.
Figure 2 shows that cutter 1 body.Draw once more among the figure blade 2 and blade 3, their knife edge part 11 with 12 by being connected plane P separately.Auxiliary blade 17 is fixed on this connection plane P, and the back will be called outstanding cutter to this blade, can be clear that from Fig. 4 and Fig. 5, and this blade comprises a flat part 18, and its blade 19 can cut out the otch 20 of tangential direction.In the both sides of this flat part 18 fin 22 and 23 are arranged respectively, one of them, fin 22 is located at this below, plane.Can see from Fig. 4 and Fig. 5, these fins be shaped as triangle.Two fins each have a cutting part 24 and 25, and the blade 26 and 27 of each part all is wedge shape, goes thereby can promptly carve in the material that is cut.The existence of these fins could be drawn blade 2 and blade 3 simultaneously respectively from the outer surface of shell wall 8 and the cutting action of inner surface just, thereby from half of shell 8 wall thickness e, promptly tangential slit 20 places outwards form radial slot 28 and 29.
The ideal form of cutter should be blade 2 and blade 3 be connected the plane P structure on two sides with respect to this plane symmetry fully, She Ji advantage is can make to cut the stress equilibrium be engraved on the fibrous inner structure when carrying out and be optimized like this.The blade 14 of blade 2 and the leading edge of fin 22 26 folded angles equal the angle between the blade 15 of the leading edge 27 of fin 23 and blade 3, and cutting edge 14 is parallel with 27, and cutting edge 15 is parallel with 26.Because these devices are arranged, guaranteed to reach force balance connecting plane P both sides every bit on the shell wall thickness direction of radial slot 20s.
Angle between the blade 14 of blade 2 and the blade 15 of blade 3 is spent to more favourable between 50 degree 30, preferably gets about 40 degree.The blade 14 of blade 2 and the blade 27 of fin 23, the blade 15 of blade 3 and the blade 26 of fin 22 are all spent between 25 degree 15 with respect to connecting the folded angle of plane P separately, and to be advisable about 20 degree.
The size of cutter for same should be according to the wall thickness of the shell of required cutting and shell internal diameter and change to some extent.Utilize device of the present invention, the shell size range that can cut is: wall thickness between 20 millimeters to 150 millimeters, from 50 to 350 millimeters approximately of bores.Other each several part of device all need not change, as long as cutter is pulled down from blade holder, changes another pair cutter and gets final product.
CPME854304
Errata
Claims (13)
1, a kind of method, be used on tubular fibrous product, be to leave step-like vertical joint-cutting on matrix and the cylindric shell that scribbles polymer-binder with the fiber particularly, the method is characterised in that, the shell wall is radially cut from its outer side surface and interior sidewall surface simultaneously, twice slightly stagger and otch parallel to each other to leave, the per pass otch all has an interior edge that ends at the shell pars intramuralis, in addition, in the shell wall along with the vertical substantially direction in above-mentioned radial cuts plane, cut out additional cut one, thus the interior edge that makes radial slot therewith additional cut join mutually.
2, a kind of method, be used on tubular fibrous product, be to leave step-like vertical joint-cutting on matrix and the cylindric shell that scribbles polymer-binder with the fiber particularly, according to the method, make between above-mentioned tubular body and the cutting tool and produce relative motion, used cutting tool comprises two main blades and an auxiliary blade, described two main blades some distances that staggers mutually, be arranged in two mutual substantially parallel planes, can be respectively radially cut out otch from the internal face and the outside wall surface of tubular body, described auxiliary blade be installed in vertical substantially plane, plane, above-mentioned main blade place in, thereby can cut out and the vertical substantially otch of above-mentioned radial slot.
3, the method for claim 1, Using such method, in the above-mentioned otch of cutting, also the inside from the shell wall cuts out two additional radial slots, wherein one to shell wall lateral expansion, and join with the otch from outside wall surface incision, another internal face to shell stretches, and joins with the otch that adds from internal face.
4, as claim 1 each described method in the claim 3, the method is regulated with respect to the position of shell auxiliary blade, and this blade is positioned within the wall thickness range of the shell that needs cutting.
5, method as claimed in claim 4 is characterized in that described blade faces the middle part of shell wall.
6, along the method for a stairstepping line cutting cylinder shape fibre, particularly cutting with the fiber is the method for matrix and the cylindrical shape shell that scribbles polymer-binder, method whereby in whole process, acts on the kilter that stress on the shell wall is in symmetrical distribution all the time.
7, implement the device of the method that each proposed in the claim 1 to 3, it is characterized in that: this device is by a cover cutting tool and the mechanism that produces relative motion between this cutter and the tubular body is formed; Described cutting tool comprises two blades (2,3) and an auxiliary blade or outstanding cutter (17), cutting edge portion is (11,12) blade (2,3) some distances that staggers mutually are arranged in two substantially parallel planes, interconnect the position during these two blades assemblings and form one and connect plane (P), this connects the middle part of plane (P) facing to shell wall section to be cut, and above-mentioned auxiliary blade or outstanding cutter (17) promptly are arranged on the extension of this plane (P).
8, device as claimed in claim 7 is characterized in that the cutting edge (14,15,19) that blade (2,3,17) cutting edge portion (11,12,18) separately all has wedge shape.
9, as each described device in claim 7 or 8, be used for implementing the method that one of claim 4 or 5 are proposed, device is characterised in that, set up two fins (22 on the outstanding cutter (17), 23), wherein a fin (22) is positioned on outstanding cutter (17) plane, place, and another fin (23) is positioned under outstanding cutter (17) plane, place.
10, device as claimed in claim 9 is characterized in that, described fin (22,23) has leg-of-mutton profile, and has separately from the initial cutting part (24,25) of wedge shape cutting edge (26,27).
11, device as claimed in claim 10, it is characterized in that: the cutting edge (14) of blade (2) and the cutting edge (27) of fin (23) equal the cutting edge (15) of blade (3) and the cutting edge (26) of fin (22) and are connected the angle of plane (P) with respect to this with respect to the angle that is connected plane (P).
12, device as claimed in claim 11 is characterized in that: above-mentioned angle is about 20 degree.
13, as each described device in the claim 7 to 12, it is characterized in that: the angle between the cutting edge (14) of blade (2) and the cutting edge (15) of blade (3) is about 40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85105487.0A CN1005324B (en) | 1985-07-17 | 1985-07-17 | Method for longitudinal cutting of tubular fibrous product, and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85105487.0A CN1005324B (en) | 1985-07-17 | 1985-07-17 | Method for longitudinal cutting of tubular fibrous product, and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85105487A true CN85105487A (en) | 1987-03-25 |
| CN1005324B CN1005324B (en) | 1989-10-04 |
Family
ID=4794510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85105487.0A Expired CN1005324B (en) | 1985-07-17 | 1985-07-17 | Method for longitudinal cutting of tubular fibrous product, and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005324B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111511512A (en) * | 2017-06-22 | 2020-08-07 | 斯瓦蒙卢森堡有限责任公司 | Device and method for slitting a tube longitudinally |
-
1985
- 1985-07-17 CN CN85105487.0A patent/CN1005324B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111511512A (en) * | 2017-06-22 | 2020-08-07 | 斯瓦蒙卢森堡有限责任公司 | Device and method for slitting a tube longitudinally |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1005324B (en) | 1989-10-04 |
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