CN1155748C

CN1155748C - Thread gripper and cutting device for knitting machine

Info

Publication number: CN1155748C
Application number: CNB991208633A
Authority: CN
Inventors: F・施密德; F·施密德; B·科赫
Original assignee: H Stoll GmbH and Co KG
Current assignee: H Stoll GmbH and Co KG
Priority date: 1998-09-30
Filing date: 1999-09-30
Publication date: 2004-06-30
Anticipated expiration: 2019-09-30
Also published as: EP0990724A2; CN1249370A; DE19844833A1; DE59910051D1; EP0990724B1; JP2000110054A; JP3143873B2; PT990724E; EP0990724A3

Abstract

Thread gripper and cutting device (10)for knitting machine have clamping and cutting positions (11 -18), a yarn distributing mechanism 30 is capable of capturing at least a yarn F2 located in clamping and cutting positions (11 -18) which is transverse of longitudinal plane.

Description

Clamp that knitting machine is used and cutting facility

Technical field

The present invention relates to a kind of clamp and cutting facility that confession knitting machine, particularly straight-bar machines use, it disposes many clamps and cutting position and has a yarn distributor gear at least, so that guide an one thread to enter into a clamp and trimming position at least.

Background technology

Clamp and cutting facility that the knitting machine of all models uses have been well-known.Only when changing the line of another kind of color or quality, just need to cut off and clamp knitting line.Circular knitting machine is changed yarn and can be carried out under complete knitting speed.The clamp and the cutting facility that are installed on this machine have a finger shape element usually, and it is not that yarn is distributed to knitting needle, retracts from knitting needle exactly.Yarn can be cut off by a blade or scissors on the stop place, and by the wire-clamping device clamping of various planforms.And on the swinging straight-bar machines, every one thread comes out and must cut off from needle-bar, is reintroduced on the another side needle-bar again.Therefore the clamp used of this knitting machine and cutting facility have a clamp element of following the tracks of thread-carrier, and it is clamped and is in the yarn that tensioning state is not cut off as yet.Clamping element also plays the thread guide eyelet that comes out that makes yarn keep below thread-carrier, and first knitting needle of another needle-bar can be clamped line and weaves like this.When yarn was knitted into knitted fabric on new needle-bar after, the loose thread that also is in the wire-clamping device was promptly thrown off.

When on straight-bar machines, producing cylindric finished product knitted fabric and so-called " the full shaping " knitwear, be to need clamp and cutting facility, each knitted fabric of formation is separated with knitting line.In addition, aspect horizontal colour bar knitted fabric, if replace along the knitted fabric edge of side up to the coil of next same color striped, having only a short loose thread at the origin-to-destination of a color region, is advantageous for the later deburring on knitted fabric limit.

DE-OS 37 15 297 patent applicants (women) introduce the cutting facility that a kind of straight-bar machines is used.On this device, many one threads have only when thread-carrier has been fed into many pins of fabric edge just to be cut off.So only need little wire-clamping device.But according to the formed knitting areas height of weaving thread, can on the knitted fabric edge, produce the loose thread of different length, later ready-made clothes be made added to the difficulties.

Described in JP 59-33787 patent by cam machinery control clamping-cutting device, it has the scissors of a wire-clamping device of controlling respectively and an independent control.Adopt this device, all are in the knitting line of processing knitted fabric can once be clamped and be cut off, thereby this device can also be applied to " Quan Chengxin " knitted fabric.

The described a kind of clamping-cutting device of JP 5-222652 is very similar with that a kind of device of JP 59-33787.A cutting facility is provided with two wire-clamping devices, so also can be applicable to process these yarns of cylindrical shape finished product knitted fabric.These yarns are clamped by a clamp position and are cut off after coat-sleeve is shaped, and other yarn is being subjected to another clamp position clamping and is being cut off after whole knitted fabric is made into.These yarns can not individually be admitted in each two clamp position of two the clamp positions on needle-bar one side or the both sides of a needle-bar, need use color yarn more than 4 kinds during as the corresponding horizontal colour bar knitted fabric of processing.In addition, this clamp figure place that is used for knitted fabric is not enough, because of this knitted fabric formed with so-called " broach is initial ".Many individual this clamps and cutting facility are settled side by side, have enlarged the end of a thread length of clamp position to the clamp position, also require thread-carrier that a corresponding stroke of being wider than avris knitted fabric end is arranged simultaneously.

Summary of the invention

Task of the present invention is to create a kind of clamp and cutting facility for straight-bar machines, many one threads can be clamped and is cut off with it, and this moment, relevant the end of a thread almost was an equal length.

According to the present invention, this task is to finish with this clamp noted earlier and cutting facility, and promptly these clamp positions and cutting position system is placed in perpendicular to needle-bar longitudinally on plane.Owing to adopt this device, be in a plane, perpendicular to needle-bar longitudinally the yarn of all clamp positions and cutting position cut off, so loose thread is an equal lengths.In addition, the configuration of this clamp position and cutting position only needs the additional longitudinally installing space of very little machine.

Another big advantage is that thread-carrier enters clamp and cutting facility for guide, need only be in the side through the extremely short stroke of the terminal operation one of knitted fabric.Mode is preferably, and a yarn distributor gear can be set, and it is shaped as one and is contained in upward rotatable element of supporting, has a hook-type tip and clamp position and cutting position and can be placed on a circular arc of the yarn distributor gear point of rotation.A yarn distributor gear only is set, and not only cost is suitable but also manipulation is simple.More excellent mode is, the yarn distributor gear is to admit one or more line at the top position of rotation, and yarn is consigned to clamp position and cutting position at an above-mentioned bottom point of rotation, between the pin collocation point of straight-bar machines and clamp position, a bigger height difference can be arranged like this.This advantage is, also can be fed into reliably in the knitting needle from the moving yarn of opening of clamp displacement by thread-carrier, and these knitting needles have a bigger clamp to space than the limit needle set of needle-bar.

If at least one yarn distributor gear has an independent transmission, then can obtain more advantage.The mechanism speed of critical condition can be subjected to Optimal Control when admitting yarn and paying yarn.For this reason, the design that transmission mechanism can be such makes the tuck of yarn, and clamping and cut off fast and finish promptly is attached to the moving slide of thread-carrier and is and can move by clamping-cutting device not reducing under the braiding speed.The slide of multisystem also can be at full throttle through clamp and cutting facility operation, and the yarn of each system was held and cut off this moment.Clamp and cutting facility can also not depend on the position of slide with independent transmission device, throw off the yarn that is held again.

A kind of embodiment of preferential selection is, clamp position and cutting position always have the clamp and the trimming sheet pin of a strap clamp line face that longitudinally can touch and shear surface, and this moment, the clamp face of this sheet pin was when clamp and trimming sheet pin enter and the surface of a pinch roll is meshing with each other.A kind of like this clamp and trimming sheet pin are born multiple function.Its admits the knitting line be positioned at the yarn groove at least from a yarn distributor gear, is held in wire clamp on its clamp face and cuts off yarn with the cutting knife acting in conjunction on its shear surface.In shear history, there is not loose line segment to fall, because line segment is collected in clamp trimming zone.

Mode is preferably, and the clamping face of clamp and trimming sheet pin and the surface of pinch roll can be designed to the rational intermeshing surface texture of shape.No matter could guarantee that so all kinds of its rugosity of knitting line and surface property are all by clamping reliably.Equally, the knitting line of many different rugosity of a clamping and structure also is possible.At this moment, the yarn of another thread-carrier also can be by each clamp with the clamping of trimming sheet pin, cut-out with separate.Also the yarn of a plurality of thread-carriers can be clamped in clamping and cut-out on a clamp position and the cutting position.One is contained in the last rotatable cutting knife of supporting and presses on the shear surface of clamp and trimming sheet pin with the seamless unoccupied place of spring force.Make cutting knife press to the spring of the shear surface of pin, can simultaneously whole pins be pressed to pinch roll, so just can reach the mechanical structure of a simple especially clamp position and cutting position.Advantage in addition is, when clamp and trimming sheet pin after clamping and cutting off a yarn or threads, the loose thread that one or more band is positive is separated when pin is released from the clamp position.Separation for yarn end does not need attachment device like this.Every clamp and trimming sheet pin can be individually, but best way is to drive by a shared transmission device.Here transmission device can be equipped a selection mechanism in a suitable manner, is used for the clamp and the trimming sheet pin of different clamps position and cutting position, and it plays simultaneously and prevents that clamp and trimming sheet pin from colliding mutually.

Description of drawings

Below with regard to appended figure, a preferred embodiment of clamp of the present invention and cutting facility is described in detail.

Detailed view in the left needle-bar stub area of a straight-bar machines of Fig. 1;

The detailed view that Fig. 2 a-2d is positioned at the different operating position according to the clamp and the cutting facility of Fig. 1 straight-bar machines;

Fig. 3 a-3b is according to the clamp of the clamp of Fig. 2 and cutting facility and the front view and the side view of trimming sheet pin;

Fig. 4 is according to the clamp position of the clamp of Fig. 2 and cutting facility and the detailed view of cutting position;

Fig. 5 is used for the clamp position of clamp and cutting facility and the transmission device schematic diagram of cutting position according to Fig. 2;

Fig. 6 is according to the clamp of Fig. 2 and the selection mechanism schematic diagram of cutting facility;

The corresponding needle-bar schematic diagram of the yarn of clamping being introduced straight-bar machines of Fig. 7 and Fig. 4.

The specific embodiment

Fig. 1 represents the fragment figure in a needle-bar NB of straight-bar machines longitudinal side left end zone, and a clamp and cutting facility 10 are housed in this zone.Device 10 also can be installed in the two ends of right-hand member or the needle-bar NB of needle-bar NB.A thread-carrier FF1 is with on the knitted fabric of not drawing in detail on figure of first one thread F1 introducing that is positioned at needle-bar NB.Yarn F1 also participates in next step braiding process.A thread-carrier FF2 introduces the second one thread F2, and braiding this moment process just in time finishes.Clamp and cutting facility 10 are given in yarn F2 delivered, but do not cut off as yet.

The clamp of Fig. 2 a-2d key diagram 1 and the mechanism of cutting facility 10.Clamp and cutting facility have 8 clamp positions and cutting position 11-18 in described example.These positions be arranged adjacent in one plane, and as shown in Figure 1, be on the fore-and-aft plane perpendicular to needle-bar NB.Clamp position and cutting position are placed on the circular arc of the point of rotation D that centers on a yarn distributor gear 30 in addition.Yarn distributor gear 30 has a hook-type tip 31, shown in Fig. 2 b.With it with a yarn, refer to the yarn F2 in the thread-carrier FF2 zone here and can be subjected on NK top, intertwined point two mutually the pin 35 of the needle-bars of face-off grasp.Meanwhile, first clamp position clamp tangent line sheet pin 40 is released.And then yarn distributor gear 30 is rotated down and yarn F2 is delivered to the yarn groove 41 interior (seeing Fig. 2 c) of clamp and trimming sheet pin 40.Fig. 2 d has showed how clamp and trimming sheet pin 40 are pulled to extreme lower position.Yarn F2 is clamped and is cut off in this position.This yarn breaks and moves to thread-carrier FF2 from clamp and tangent line sheet pin 40.The yarn distributor gear is got back to its original position again.

Fig. 3 represents the partial cross section front view and according to the clamp of Fig. 2 and the side view of trimming sheet pin 40.Yarn groove 41 (seeing Fig. 3 b) is as embedding yarn.Projection 44 limiting grooves 41 outsides are played simultaneously and are stoped yarn when clamp trimming sheet pin 40 return movements, can skid off from yarn groove 41.In addition, clamp and trimming sheet pin 40 have the clamp face 42 of an avris (Fig. 3 a), can common one or more yarn of clamping with a pinch roll 70 (Fig. 4).Being provided with a shear surface 43, a cutting knife 60 (Figure 40) is housed on this face with pin 40 1 sides that clamp face 42 stands facing each other mutually.When yarn was thrown off from the clamp position, yarn can be transferred out when pin 40 is released from the clamp position with the front 45 of pin 40.

Fig. 4 has showed outside the clamp trimming sheet pin 40, has also showed pinch roll 70, and the latter can join yarn of clamp face 42 clampings or the threads with pin 40.To this, the surface of pinch roll 70 has a kind of shape reasonably to affact the clamp face 42 of pin 40, and it is bearing on the roller 53 and can rotates, thereby does not hinder the discrepancy campaign of pin 40.In a parts of bearings 50, cutting knife is bearing on the axle 51, can rotate, and cutting knife 60 is pressed on its blade 61 seamless unoccupied places on the shear surface 43 of pin 40 by a spring 52.The power that while spring 52 applies also affacts pin 40, makes pin press to pinch roll 70 and clamps yarn.

Fig. 5 has showed the setting of many clamps of a preferred co-rotation and trimming pin.A motor of not drawing is pressed the direction driven wheel 77 of arrow 76.Cog belt 74 is at the uniform velocity to transmit the motion to gear 71,72 and 73.A mechanism that does not draw in detail is meshed with the bolt that is installed in each gear 71,72,73,77, and rotatablely moving of gear 71,72,73,77 is sent to the converting motion of clamp and trimming sheet pin.

Fig. 6 has represented 40/1 to 40/8 selection mechanism of 8 clamp altogether that are used for 8 clamps and cutting position and cutting position.One does not have gear 85 of illustrated Motor Drive to press two direction of rotation operations shown in the arrow 86.Select like this slide plate 80 just can be on an arc-shaped rail to the right or be moved to the left.Taking special configurations selected element 81,82,83,84,85 in selecting on the slide plate, can only be that a clamp and trimming sheet pin 40/1 to 40/8 move via the mechanism that does not provide on the figure thereby reach all the time.Selected element 81 affacts clamp and trimming sheet pin 40/1,40/2; Selected element 82 affacts clamp and trimming sheet pin 40/3; Selected element 83 affacts clamp and trimming sheet pin 40/4; Selected element 84 then affacts clamp and trimming sheet pin 40/5,40/6, and selected element 85 affacts clamp and trimming sheet pin 40/7,40/8.

Fig. 7 represents to enter the braiding process again according to being positioned at the yarn F that clamp position and cutting position 11 to 18 be held and cut off among Fig. 4.At first, yarn F is clamped in the centre of clamp shown in dotted line and trimming sheet pin 40 and pinch roll 70, and and then thread-carrier FF passes through needle-bar NB to the right, and yarn F enters knitted fabric through several coils.Then clamp and trimming sheet pin 40 are driven, thereby yarn and thread head F outwards carries from bite with the top front face 45 of clamp and trimming sheet pin 40.

Claims

1. a kind of clamp and the cutting facility used of knitting machine, dispose many clamps and cutting position (11～18) and have a yarn distributor gear (30) at least, be used for guiding at least one one thread (F, F2) enter into a clamp and cutting position (11～18), it is characterized in that these clamps and cutting position (11～18) are placed in one perpendicular to needle-bar longitudinally on the plane.

2. according to the described clamp and the cutting facility of claim 1, it is characterized in that, the form of described line distributor gear (30) is one and is contained in upward rotatable element of supporting, be with a hook-type tip (31), and clamp and cutting position (11～18) are placed on the circular arc around the point of rotation (D) of yarn distributor gear (30).

3. according to the described clamp and the cutting facility of claim 2, it is characterized in that yarn distributor gear (30) is to admit single line or many lines at the top position of rotation, and at the position of rotation of bottom yarn is delivered to clamp and cutting position (11～18).

4. according to one of claim 1 to 3 described clamp and cutting facility, it is characterized in that at least one yarn distributor gear (30) has a single transmissioning mechanism.

5. clamp according to claim 4 and cutting facility, it is characterized in that, transmission mechanism is design like this, promptly make attached thread-carrier (FF1, FF2) Yun Dong slide can move not reducing under the braiding speed to go up at clamp and cutting facility (10), thereby finish yarn (F, tuck F2), clamping and cut off apace.

6. according to one of claim 1 to 3 described clamp and cutting facility, it is characterized in that, clamp position and cutting position (11～18) always have one vertically can release, and with the clamp and the trimming sheet pin (40) of a clamp face (42) and a shear surface (43), the clamp face (42) of this sheet pin (40) is at clamp and trimming sheet pin (40) when entering and a pinch roll (70) face surface interaction.

7. according to the clamp and the cutting facility of claim 6, it is characterized in that the rational intermeshing surface texture of surface design forming shape of the clamp face (42) of clamp and trimming sheet pin (40) and pinch roll (70).

8. clamping according to claim 6 and cutting facility is characterized in that, one is loaded on supporting and goes up rotatable cutting knife is pressed to clamp and trimming sheet pin (40) with the seamless unoccupied place of spring force shear surface (43).

9. clamp according to Claim 8 and cutting facility is characterized in that, make the spring (52) that cutting knife (60) is pressed to the shear surface (43) of sheet pin (40) simultaneously whole sheet pins (40) be pressed to calender roller (70).

10. clamp according to claim 6 and cutting facility is characterized in that, (F F2) afterwards, separates at sheet pin (40) the end of a thread with its front (45) when come out in the clamp position with cutting off a yarn in clamping for clamp and trimming sheet pin (40).

11. clamp according to claim 6 and cutting facility is characterized in that, are provided with a common transmission device for many clamps and trimming sheet pin (40/1～40/8).

12. the cutting facility of clamp according to claim 11, it is characterized in that, transmission device is equipped with a selection mechanism that is used for the clamp and the trimming sheet pin (40/1～40/8) of each clamp position and cutting position (11～18), and this mechanism can prevent the collision each other of clamp and trimming sheet pin (40/1～40/8) in addition.