CN85104451A

CN85104451A - Positive lock foil blades

Info

Publication number: CN85104451A
Application number: CN 85104451
Authority: CN
Inventors: 森纳特; 格特斯乔
Original assignee: Beloit Corp
Current assignee: Beloit Corp
Priority date: 1985-06-11
Filing date: 1985-06-11
Publication date: 1986-12-10

Abstract

In paper machine shaping district, be positioned foil blades with the closely related position of copper mesh of dewatering, make chopping board locate and chopping board is bearing in the tool rest of operating position, charging component between tool rest and chopping board, chopping board tightly is fixed on operating position, when inflation, avoid shaking, loosen chopping board during venting and make it to skid off from transverse machine.

Description

Positive lock foil blades

This invention is the improvement of relevant papermaking equipment, and a kind of more precisely positive lock foil blades mechanism promptly provides a kind of improved foil blades structure and knife rest, makes the edge of a knife be rigidly fixed to operating position, and also can unload.

In papermaking machine, there is a mobile forming net to accept the paper pulp that flows down from the slope, weir of flow box, paper pulp dewaters by papermaking wire-cloth the time.Dewater unit generally includes a chopping board, is soft material or hard material above it, and chopping board is accurately located, and forms the relief angle of and machine papermaking net aspect, causes depressor area like this, helps paper pulp to dewater by papermaking wire-cloth.Keep the constant position of angle concerns it is very important between foil blades and the papermaking wire-cloth.Foil blades will wear and tear when machine run, therefore should have a kind of special arrangement that foil blades can be unloaded, and changes the edge of a knife of repairing.Common way is with a T shape bar supporting edge of a knife, and the edge of a knife can be unloaded from the direction with the machine traversed by.The loose fit that conventional foil blades and the tolerance between the T shape bar knife rest are generally 0.008 " to 0.20 ".Loose fit before this foil blades and the T shape bar causes the edge of a knife shaking on T shape bar knife rest, to cause the residual water of paper, stained and fiber pushing away on the edge of a knife long-pending, and the possible drawn grain of the paper of Sheng Chaning consequently.And, because retree shape may take place in the distortion sky that cause unsuitable location between the edge of a knife and the papermaking wire-cloth.If minimizing tolerance, the edge of a knife are good at again taking out from knife rest.The purpose of this invention just provides a kind of improved foil blades knife rest, and knife rest has a positive lock mechanism, can be accurately firm in operating position foil blades.

This invention is except the clamping foil blades, and this cutter frame structure also can be used for the clamping chopping board, the deflection edge of a knife, and the forming board edge of a knife, the forming shoe edge of a knife, etc.For the convenience of narrating, this paper only illustrates with foil blades.But this is not the purposes that limits it just in order to narrate.

Another purpose of this invention is to provide a kind of positive lock mechanism for foil blades (or other other mechanisms that move below near papermaking wire-cloth), wherein there is a special clamper in running, to be rigidly fixed to the precalculated position to mechanism, all right uncoupling gear unloads apace easily or changes.

Another purpose of this invention provides a kind of improved mechanism such as foil blades and clamper; they can be locked when operation; the advantage that is easy to clear up is structurally arranged; retaining mechanism can not loosen or wear and tear when moving continuously; and can convert the multilayer edge of a knife, the ceramic edge of a knife or additional switching part to, and do not increase the shutdown tool change time.

The further purpose of this invention provides the bearing of a kind of improved edge of a knife or other mechanisms and retaining mechanism, and this bearing can be in operation and very accurately foil blades be located, and can absorb impact and vibrations to a certain extent.

The characteristics of this invention provide a kind of foil blades that is contained on a kind of structure clamper, and the shape of clamper makes it to slide on T shape tool rest.The structure of tool rest is the T-slot that and machine traversed by are arranged, and the inside has inflatable member that tool holder stiffness ground is positioned on the tool rest, just can loosen knife rest after the venting, makes the knife rest slip.

Other purpose, advantage and characteristics are revealed the specification of example preferably in the principle of explaining invention, can come into plain view when claim and drawing.Wherein:

The drawing explanation

Fig. 1 is according to the principle of this invention foil blades of drawing and the vertical cross-section diagram that props up seat mechanism;

Fig. 2 is the schematic diagram that shows the fourdrinier wire part of foil blades relative position.In fact the ratio of edge of a knife assembly wants big with the ratio of other parts.

Fig. 3 intends mutually with Fig. 1, but content is another form of invention.

The follow-on vertical cross-section diagram of Fig. 4 foil blades.

Example explanation preferably

As shown in Figure 2, paper machine foil blades assembly 10 is below mobile fourdrinier wire 12.The papermaking fourdrinier wire is by the layer roller 15 of breast roll 13 and tail.Copper mesh forms web plate W.Be the dewater unit edge of a knife 10 and suction box 14 below the copper mesh, in addition more dewater unit is arranged in actual paper machine, the people who is proficient in technology fully understands this situation.For paper pulp is placed on the net, the head box on a band slope is arranged, paper pulp dewaters downwards by papermaking wire-cloth and drip pan or other water containers.

Fig. 1 foil blades mechanism of drawing in detail is among the figure on the operating position of knife-edge support below papermaking wire-cloth.The edge of a knife has a hard upper surface 16, and upper surface 16 has one to introduce planar section 16a and rear edge part 16b, rear edge part below copper mesh and copper mesh shape in an angle, cause negative pressure, promote dewatering of pulp on the copper mesh.

As mentioned above, the structure of invention is particularly suitable for supporting foil blades, but should be clear and definite be, it also is applicable to other mechanisms, as the deflection edge of a knife, and the forming board edge of a knife, the forming shoe edge of a knife etc., for the convenience on narrating, only mention the supporting foil blades here, this is just in order to narrate rather than limit its purposes.

Below the chopping board cutter number a groove 17a is arranged, the edge of a knife is contained on the knife rest 18 by this groove.Knife rest is contained on the tool rest 19, and tool rest is supported on the frame 27.Can understand more clearly that from detailed explanation edge of a knife assembly 17 is designed to laterally to skid off tool rest 29 so that unload the F edge of a knife and the knife rest assembly to part.

Knife rest assembly 18 has a upper tool post 19, and upper tool post 19 has a convex 19a to stretch among the notch 17a of the edge of a knife.The edge of a knife and 19a bond together, or anchor on the 19a of knife rest, such as using silicon rubber 20.The edge of a knife 17 is generally made with very hard material, must all support equably on the length, and therefore being bonded on the knife rest is the method for a feasible set edge of a knife 17.

The method of knife-edge support on knife rest 18 is not important, the mechanical means production that this assembly can be different.The edge of a knife and knife rest such as knife rest, can be produced by manufactory, and as buying as an assembly with knife rest 29, comprise the relevant part that some are concrete, and these parts are to constitute according to conspicuous principle from the process of narrating these parts.

Knife rest 19 has the limit 19b that stretches out downwards, and these two limits of stretching out ride on the middleware 21 of knife rest assembly.Middleware 21 has the limit 21b that stretches downwards, these two limit 21b in the lower end in the bending inwards of 21b place, be buckled in following 22 of the knife rest assembly below.Last part and middleware weld on its whole length or weld together.

In order to support the whole knife rest assembly and the edge of a knife, be provided with a knife rest 29 continuous and the machine traversed by, tool rest is made with stainless steel or other suitable materials.Be intervally distributed with screw hole on the tool rest, tool rest be securely fixed on the frame with screw 26.

Tool rest roughly is the T type, and respectively there is the lower surface of the side muscle that crosses out on both sides facing to shoulder 29b, and lower surface is processed into the thrust surface of bending flange 22c in the lower slide.

Tool rest 29 has a continuous central channel, and there is charging component 24 the inside.Charging component has one to cut down door system inflation and venting, represents with 25 on the figure.Charging component is a continuous empty inner tube of a tyre.When solid line was represented to inflate on the figure, pneumatic tyre is the top upwards, and the knife rest assembly is fixed on the operating position.When pneumatic tyre was exitted, shown in Fig. 1 dotted line, the knife rest assembly loosened and falls, and the part 22 of knife rest falls and is parked in above the tool rest 29.With regard to the power between the removal copper mesh and the edge of a knife, it can easily laterally be taken out the edge of a knife like this.For this purpose, the groove that flange 22c forms is wideer than side muscle 29a, makes knife rest is located on the tool rest quite loosely after the pneumatic tyre venting.This just makes foil blades to skid off below copper mesh from the direction with the machine traversed by, changes new foil blades assembly.

Figure 3 shows that the supporting device of another kind of form.Foil blades 35 or other kindred organizations are contained on the knife rest 36.The upwards interior bending in knife rest both sides forms two relative grooves 42 and 43.These two grooves are being accepted the outwards

outstanding muscle

40 and 41 in tool rest 37 the higher authorities both sides.Tool rest 37 is fixed on the frame 39 by screw spaced apart 38.

Side muscle

40 and 41 thinner than

groove

42 and 43 is so the side muscle can slide in groove loosely.For chopping board 35 is positioned on the tool rest 30 rigidly, on tool rest, putting charging component 45 in the elongated groove 44.When charging component 45 was inflated to position shown in the solid line, knife rest 36 was pushed to the top, makes

side muscle

40 and 41 be locked in tightly on the flange of groove 42 and 43.When pneumatic tyre 45 was exitted to the position shown in the dotted line, the side muscle in the groove loosened, and the knife rest assembly 36 and the edge of a knife 35 thereof can be loosely from taking out and change with the direction of machine traversed by.After knife rest and the edge of a knife were changed, pneumatic tyre 45 inflations made between knife edge and knife rest and the tool rest 37 to hold out against.Like this, charging component 45 applies a kind of lasting clamp pressure foil blades 35 is fixed on the operating position.Becoming flexible of charging component stretching part, waterproof, play cushioning effect, part is fastened on the corresponding position.Pneumatic tyre 45 can be elongated integral body, or section between being divided into, with suitable a mechanism's inflation or the venting cut down.

Fig. 4 represents the form of a kind of modification of inventing, and foil blades 50 is made by the polyethylene material of an integral body here.All the edge of a knife 50 is processed into a single piece with the knife rest 36 with shape Fig. 3.The flange 51 and 52 that the whole edge of a knife and knife rest 50 have introversion to stretch out

forms groove

53 and 54, is bearing on the tool rest and with charging component 24 and tightly locatees, and method is identical with Fig. 1, Fig. 3.Charging component 24 is with shown in Figure 1 identical, but the charging component of Fig. 3 also can adopt.

Be in operation, tool rest 29 anchors on the frame 27.The foil blades assembly installs on the tool rest from the direction cunning with the machine traversed by, below the edge of a knife all is inserted in copper wire.This sliding dress is easily, because the groove at side panel 29a place is much wideer than muscle.After the chopping board knife rest was in place, charging component 24 upwards compressed following part 22 by cutting down 25 inflations.The flange 22c of interior bending and shoulder 29b interlock are located chopping board securely.Like this, charging component applies a kind of lasting clamp pressure foil blades 17 is anchored at operating position securely.Charging component also plays cushioning effect.Charging component is stretching part loosening also, waterproof and fiber.Chopping board is difficult for being stained with other things of knot or fiber facing to following surface concerning tool rest.And this structure can also be processed together with the not tight part of other most of tolerances.

Foil blades 17 can be located on fore-and-aft direction securely, that is to say to locate securely on machine direction, because the suitable distance location that tool rest flange 29a can laterally leave.The possibility that foil blades shakes is in fact very little.And prevent to shake also and can realize by the pressure of the inflating rubber tire that is positioned at the tool rest center.

In the mill, the accurate location of foil blades is only relevant with the upper surface of part flange 22c under the knife rest.Behind so accurate location, after charging component 24 inflations, the edge of a knife all can be raised to suitable height on the length.And the angle of the edge of a knife can keep correctly constant on machine direction.The edge of a knife will be in correct and suitable operation height on its whole length, and because the vertical power that inflatable inner tube applies forces the edge of a knife to get the straight line that rigidity tool rest 29 is determined, thereby the edge of a knife does not just have crooked possibility.

The edge of a knife is in the accurate location of upright position, and the nose angle degree of the edge of a knife and copper mesh remains unchanged, and just guaranteed the dehydration by copper mesh, eliminated web plate possibility inhomogeneous and inhomogeneous dehydration on the copper mesh width.And this structure has not only guaranteed the accurate location of operating time, can also loosen very soon, and the edge of a knife is laterally transferred to below copper mesh.The isolated foreign matter that may occur of pneumatic rubber seal, and do not need accurate inflation, as long as reach can be the edge of a knife jack-up that makes progress for its pressure, it is just enough that knife rest is close to the degree of tool rest.In sum, may find out that we provide a kind of foil blades mounting and clamping system of improved paper machine, reach above-mentioned purpose and advantage, and structural advance is arranged.

Errata

Errata

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Claims

The invention claim that we require:

1, in the paper machine shaped portion system:

Accept paper pulp and to the mobile papermaking wire-cloth of dewatering of pulp;

The head box that the slope, weir is arranged is sprinkling upon carton on the copper mesh;

The device of the water that acceptance takes off from copper mesh;

Engage with copper mesh, below copper mesh, be in operating position and the member machine traversed by of reservation;

The clamping tool rest of above-mentioned member, member supporting on operating position;

Charging component between tool rest and the member withstands on member on the operating position during inflation, loosens member during venting;

Make the means of charging component inflation, venting.
2, by claim 1 that constitute with the system paper machine shaped portion in:

Comprise a kind of knife rest assembly, make member top loading securely, and and charging component that member is clamped on the operating position engage;

This member extends the domatic of predetermined angular in the motion of defluent direction of water and copper mesh.
3, in the paper machine formation system that constitutes by claim 1:

Hold the groove of charging component between knife rest assembly and the tool rest;

At machine works direction supporting knife rest assembly and in the means that after the venting are member and knife rest assembly guiding when machine direction is removed;
4, the positive lock mechanism of paper machine comprises:

Dewatering element is used in that groove helps water from the transmission of paper pulp by copper mesh to extension below the forming net when dehydration;

Supporting member is in mechanism's location tool rest of operating position;

Charging component between tool rest and member holds out against member at operating position during inflation, loosens member during venting.
5, the paper machine positive lock mechanism that constitutes by claim 4:

Wherein the tool rest of member be positioned at copper mesh below, member is on tool rest, the last plane and the copper mesh of member cause dehydrating effect in an angle.
6, the paper machine positive lock mechanism that constitutes by claim 4:

Its intermediate slide has the continuous groove of and machine traversed by, and charging component is that a continuous integral body is positioned at groove, between tool rest and member.
7, the paper machine positive lock mechanism that constitutes by claim 4:

Comprise member is rigidly fixed to knife rest assembly on it, charging component is between knife rest assembly and tool rest;

This knife rest assembly has a carriage and tool rest to engage, and member and knife rest assembly can laterally be skidded off from off the net when venting.
8, the paper machine that constitutes by claim 4 is just at retaining mechanism:

Comprise a kind of knife rest assembly, member is contained on the knife rest densely, and the knife rest assembly can skid off so that unload lower member and knife rest assembly from transverse machine on tool rest.
9, the paper machine positive lock mechanism that constitutes by claim 4:

Comprise a kind of member knife rest assembly thereon, tool rest has the face that faces toward shoulder downwards, and the knife rest assembly has the flange below reaching on the shoulders, and member can laterally be skidded off from tool rest.
10, the method for a mechanism relevant with copper mesh of clamping in paper machine comprises:

Make member when closely moving, locating, assist to dewater the paper pulp from copper mesh with mobile fourdrinier wire;

Make member upwards with charging component towards the copper mesh direction;

Chocking construction, limiting member moves to the predetermined operating position relevant with copper mesh towards copper mesh when inflation;

During the charging component inflation member is remained on operating position, loosen member during venting.
11, press the method for mechanism relevant in the step clamping paper machine of claim 10 with copper mesh:

Take out member from transverse machine when comprising the charging component venting, insert the member of changing, inflation again is the member locking positioning of changing.
12, paper machine positive lock foil blades mechanism comprises following system:

There is plane surface also to become the chopping board of an angle of cut with mobile copper mesh;

The upper tool post of chopping board, and the means that chopping board are connected upper tool post;

The intermediate slide that is connected with upper tool post;

Lower slide, following inwardly bending relatively downwards;

Tool rest, both sides cross out the side muscle, and the side muscle is downwards facing to shoulder, in chopping board operating position and this flange engages;

Constitute the means of tool rest longitudinal extension groove;

Charging component in this groove engaged in when inflation and lower slide, and flange and shoulder are engaged, and securely chopping board was fixed on operating position;

Make the means of charging component inflation, venting.
13, the paper machine positive lock foil blades mechanism that constitutes by claim 12:

Be included in the pressure face on the charging component, be used for engaging with lower slide.
14, paper machine positive lock mechanism comprises following system:

A member is positioned and mobile copper mesh fluid-tight engagement, helps online dewatering of pulp;

The charging component that member is made progress towards the copper mesh direction;

Chocking construction, limiting member moves to the scheduled operation position towards copper mesh when inflation.
15, paper machine positive lock mechanism comprises following system:

Member, when primary importance the motion of its upper surface and mobile copper mesh closely related, when the second place, leave copper mesh downwards;

The tool rest of supporting member, and the clamping means between tool rest and the control member remain on primary importance to member when operation, drop on the second place under the member when unloading lower member.
16, the positive lock mechanism that constitutes by claim 15:

Clamping means wherein are, during the charging component inflation member are remained on primary importance, during venting member are loosened dropping to the second place.
17, paper machine positive lock foil blades mechanism comprises following system:

Upper surface is the plane basically, becomes an angle of cut with mobile copper mesh, and constitutes falling bodies with skate machine, promptly comprises the chopping board of two grooves that introversion is relative;

The tool rest that flanged pin and above-mentioned groove match;

The charging component of lock foil blades in the above-mentioned tool rest.