CN2171461Y

CN2171461Y - Improved bar cutter

Info

Publication number: CN2171461Y
Application number: CN 93223819
Authority: CN
Inventors: 黄国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-09
Filing date: 1993-09-09
Publication date: 1994-07-13
Anticipated expiration: 2003-09-09

Abstract

The utility model relates to an improved bar cutter which is in the shape of a disk and can be arranged on a rotary locating rod each of whose ends is provided with a high frequency vibrator such as an ultrasonic vibrator and a mechanical vibrator to make the locating rod move forwards and backwards. By using the utility model, the cutting ability of the bar cutter can be increased, and the quality of the cut strip yarn is better. Because the bar cutter is in the shape of a disk and is in the rotary state, the bar cutter can be used at each point of the cutting operation to extend the service life of the bar cutter. The replacement of the bar cutter is very convenient, each bar cutter does not need aiming accurately, and the utility model has the advantages of innovation and practicability.

Description

Improved bar cutter

The utility model relates to a kind of improved slitting knife, refers to that especially a kind of slitting knife each point that makes fully is applied to cutting action, and the improvement design of effect such as tool is easy to operate, the slitting effect is good.

Please referring to shown in Figure 7, plastics extruder 50 1 sides are provided with barrel 51 at present, can in barrel 51, placement be granular plastic raw materials in right amount during manufacturing, borrow the heating plate of extruder 50 periphery settings that raw material is heated and be liquid, and borrow the screw rod in the extruder 50 that liquid charging stock is pushed to shaping mould 52 places, borrow shaping mould 52 promptly to can be made into diaphragm, after this diaphragm cools off through cooling bath 53, then get banding machine 54 and diaphragm is cut the plastic strip that is strip through drawing again, again through an elongator 55 and to coiling machine 56 places, the strip yarn can be wound on the wheel shaft afterwards; The strip plastics yarn that quality is good must possess the advantage that matter is close, intensity is good, specification is consistent.

And to get banding machine be with slitting knife diaphragm to be carried out the slitting program drawing of cooperating with the plastics extruder among Fig. 7, there is disappearance in the structural design of slitting knife only at present, so diversified in specifications, non-situation that is concordant linearity in end limit that the strip yarn that cuts out exists, and the service life of slitting knife is not long, promptly must change blade every one period short time; Please referring to shown in Figure 8, present being seen slitting knife is on circular backstay 60 and the fixing blade 61 of columns, the knife edge angle of blade 61 is on the path of diaphragm process, when the film yarn 70 that is spurred by coiling machine passes through blades 61, promptly cut the plastics yarn that forms strip by knife edge angle, use after a period of time when if knife edge angle is blunt, the adjusting device 62 of then borrowing worm screw, worm gear to form is adjusted the angle of inclination of blade, knife edge face with diverse location cuts, if during the equal rust of whole blade, then must change blade one by one; Why above-mentioned slitting knife exists not long problem in service life, be the work that fully is not applied to yarn cutting because of the every bit of slitting knife, but according to selecting probability, the work of borrowing fixing single-point to cut, and if the work of cutting continuously with fixing single-point, promptly easily make knife edge face be easy to rust, reduced the service life of slitting knife; And when carrying out slitting work, the film yarn is to be pulled state, the strength that draws can cause great frictional force by the tool setting sharp angle, therefore after using a period of time, easily make knife edge angle rust, and if when in time not adjusting the angle of blade or changing blade, promptly can be because of cutting the bad strip yarn diversified in specifications that cuts out, and the end limit that makes the strip yarn is non-is concordant linearity, and the quality of plastics yarn is reduced; Extremely many because of the blade of installing on the backstay side by side in addition, if each blade must be taken off one by one when desire is changed, newer blade is loaded onto one by one, more must relend after loading onto and adjust angle, the position consistency that action makes each blade, for the operator, be the structure of a troublesome poeration.

And must change the disappearance of blade often at present slitting knife, in abroad once the someone design a kind of improvement slitting knife, please referring to shown in Figure 9, this Yarn cutter is that ring is established several blades 81 on backstay 80, blade still is fixed during yarn cutting, can carry out cutting action with a blade to yarn earlier, treat this blade rust after, with another blade yarn is cut after again backstay 80 slightly being rotated an angle, again blade is all changed after the equal rust of the blade of bar periphery to be positioned; Though design can make the time of changing blade elongate only whereby, right its is still with fixing single-point and cuts, the knife edge also fails fully to use, so still have the problem of the easy rust of the knife edge, therefore still have puzzlement not long, bad in service life to exist, and because of each blade of changing is more, and must through the adjustment program corresponding each sheet be aimed at again, the adjustment mode bothers more.

Main purpose of the present utility model is: a kind of improved slitting knife is provided, its be on backstay the installing can with the backstay interlock and the rotation discoid slitting knife, the knife edge every bit with cylindrical that slitting knife can be continuous is cut the film yarn be strip, so prolonged the service life of slitting knife, and the cutting power of slitting knife is increased, make the good strip yarn of quality.

Another main purpose of the utility model design is: a kind of improved slitting knife is provided, and it is the design that also can be connected with high frequency vibrator by the backstay axle center, makes the disk slitting knife except that terrible rotation, and displacement before and after also getting is to increase the effect of cutting.

The utility model provides a kind of improved slitting knife, this slitting knife is to be installed in drawing of plastics extruder rear end to get on the banding machine, can borrow slitting knife that the film yarn is carried out cutting action, to form the strip yarn, it is characterized in that: this slitting knife is in the form of annular discs, periphery is a knife edge face, and slitting knife is to be installed on the rotatable backstay, makes slitting knife get rotation simultaneously.

Aforesaid improved slitting knife is characterized in that: backstay one end can be connected high frequency vibrator simultaneously, gets front and back displacement simultaneously when making the backstay rotation.

Aforesaid improved slitting knife is characterized in that: slitting knife must cooperate with an anvil bar, makes the slitting effect better.

Aforesaid improved slitting knife is characterized in that: slitting knife or anvil bar all can be the rotation of fixed, fixed rotating speed or three kinds of patterns of speed variable rotation.

And the utility model structure and existing slitting knife maximum different be in, slitting knife of the present utility model is discoid and rotatable design, design can make the slitting knife each point all can be applied to cutting action whereby, but not cut with fixing single-point, so adding all frictional force in slitting knife when advancing, diaphragm reduces to minimum degree, the cutting power of knife edge face is increased, and can speed increase the effect of cutting, other cooperates the setting of vibrator, more can make slitting knife possess better cutting effect, the strip yarn that makes formation is the specification unanimity not only, and ora terminalis is concordant linearity, provides a speed fast, the yarn cutting structure that effect is good.

Moreover, borrow improvement design of the present utility model, existing slitting knife possesses slitting knife need not change and change the advantage that the back slitting knife need not be aimed at often, because of the utility model is the frictional force that produces when reducing cutting with speed, so the probability of slitting knife knife edge surface wear can reduce many, the relative service life that can prolong slitting knife, and must change slitting knife the time, be disc-shaped design also because of slitting knife of the present utility model, so only slitting knife will be loaded onto one by one and be got final product, need not be after loading onto again through alignment procedure, so make the replacing program easier, in addition all can be fixed because of slitting knife and anvil bar, the fixed rotating speed rotation, three kinds of patterns of speed variable rotation, the operator can and need according to different working conditions to select to be provided with.

Further specify architectural feature of the present utility model below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the stereo appearance figure of the utility model disk slitting knife.

Fig. 2 is the schematic diagram that the utility model disk slitting knife cooperates with transmission device.

Fig. 3 is the schematic side view that the utility model disk slitting knife cooperates with the ultrasonic vibrator.

Fig. 4 is the front elevational schematic that the utility model disk slitting knife cooperates with the ultrasonic vibrator.

Fig. 5 is the schematic side view that the utility model disk slitting knife cooperates with the eccentric motor vibrator.

Fig. 6 is the front elevational schematic that the utility model disk slitting knife cooperates with the eccentric motor vibrator.

Fig. 7 is the schematic diagram of plastics extruder.

Fig. 8 is the floor map of existing slitting knife.

Fig. 9 is the floor map of another existing slitting knife.

Please referring to shown in Figure 1, slitting knife 10 of the present utility model is in the form of annular discs, circumferential surface is very sharp keen knife edge face 11, ora terminalis and be the knife edge angle 12 of tip shape, and slitting knife 10 is to compel to be formed on the

backstay

20,10 of each slitting knives are with top system dish 21 intervals, make the distance of 10 of slitting knives certain, if desire to make the distance of 10 of each slitting knives to strengthen or dwindle, the top system dish 21 that only must change different size get final product, and the number of slitting knife 10 can be complied with required and increases and decreases on the backstay.

Please cooperate referring to Figure 1 and Figure 2, backstay 20 1 ends must be connected transmission device 30, the slitting knife 10 of borrowing transmission device 30 to drive backstay 20 and compeling to be formed on the backstay 20 rotates with fixed rotating speed, or rotate with speed variable, and the transmission device shown in scheming to go up is the design of reduction gearing motor, when film yarn 40 contacts with slitting knife 10, can borrow the slitting knife 10 of rotation that 40 cuttings of film yarn are the strip kenel; Backstay 20 each end in addition of the present utility model also must be connected high frequency vibrator, and cooperate with an anvil bar, high frequency vibrator can be Fig. 3, ultrasonic shown in Fig. 4 is vibrator 31 back and forth, also can be Fig. 5, eccentric motor vibrator 32 shown in Fig. 6, please cooperate earlier referring to Fig. 3 and shown in Figure 4, ultrasonic vibrator 31 back and forth must borrow sliding sleeve 311 and backstay 20 axle center to articulate, and the axle center of backstay 20 and be connected a reduction gearing motor 221 with shaft coupling 22, motor can be d.c. motor or frequency conversion type motor, and in backstay 20 appropriate location clampings one gear 222, gear 222 meshes with the gear 231 of anvil bar 23 1 ends, and anvil bar 23 peripheries form and slitting knife 10 corresponding grooves 232, when motor 221 rotations, can drive backstay 20 and anvil bar 23 with the rotation of fixed rotating speed or speed variable, and by ultrasonic back and forth vibrator 31 make backstay 20 produce vibration.

Please cooperate again referring to Fig. 5 and shown in Figure 6, eccentric motor vibrator 32 also is to articulate by sliding sleeve 321 and backstay 20 axle center, and the axle center of backstay 20 and be connected a reduction gearing motor 221 with shaft coupling 22, motor can be d.c. motor or frequency conversion type motor, and in backstay 20 appropriate location clampings one gear 222, gear 222 meshes with the gear 231 of anvil bar 23 1 ends, and anvil bar 23 peripheries form and slitting knife 10 corresponding grooves 232, when motor 221 rotations, can drive backstay 20 and anvil bar 23 with fixed rotating speed or speed variable rotation, and make backstay 20 produce vibration by eccentric motor vibrator 32; Event must make backstay 20 do the action of front and back displacement in certain limit, and cooperate the setting of shaft coupling and sliding sleeve by the setting of above-mentioned vibrator, and backstay still can be shifted front and back in rotation, makes the effect of cutting better.

Claims

1, a kind of improved slitting knife, this slitting knife is to be installed in drawing of plastics extruder rear end to get on the banding machine, can borrow slitting knife that the film yarn is carried out cutting action, to form the strip yarn, it is characterized in that: this slitting knife is in the form of annular discs, periphery is a knife edge face, and slitting knife is to be installed on the rotatable backstay, makes slitting knife get rotation simultaneously.

2, modified form slitting knife according to claim 1 is characterized in that: backstay one end can be connected high frequency vibrator simultaneously, gets front and back displacement simultaneously when making the backstay rotation.

3, modified form slitting knife according to claim 1 is characterized in that: slitting knife must cooperate with an anvil bar, makes the slitting effect better.

4, according to claim 1 or 3 described modified form slitting knives, it is characterized in that: slitting knife or anvil bar all can be the rotation of fixed, fixed rotating speed or three kinds of patterns of speed variable rotation.