CN1549879A

CN1549879A - Device and method for opening the edge of a tubular knitted article or similar

Info

Publication number: CN1549879A
Application number: CNA028168194A
Authority: CN
Inventors: 安东尼奥・马格尼; 安东尼奥·马格尼
Original assignee: Golden Lady SpA
Current assignee: Golden Lady SpA
Priority date: 2001-08-28
Filing date: 2002-08-19
Publication date: 2004-11-24
Also published as: RU2004109137A; EP1421236A1; JP2005501187A; MXPA04001817A; CA2458557A1; WO2003018903A1; KR20040035746A; BR0212231A; ITFI20010163A1; US20040244431A1; PL368621A1

Abstract

The device comprises: a tubular member (5A; 5B) in which the articles are inserted; a plurality of mobile gripping members (49) mobile between a first closed position and a second open position, arranged on one outlet end of said tubular member; and guiding and orienting means (71, 73) associated to said outlet end of said tubular member, for guiding and orienting the tubular article inserted in said tubular member towards said gripping members.

Description

Be used for the apparatus and method that fabric tube or analog expand the limit

Technical field

The present invention relates to a kind of be used for the cylindrical shape object whole while expanding device, the cylindrical shape object is fabric tube for example, for example stocking or socks or the like.

Background technology

In the production of socks, stocking, panty hose and other fabric tube, usually occur object is expanded the limit to carry out the needs of many machine operations.These objects use Knitting Machinery, typically use circular knitter to be woven, and it unloads the semi-finished product object, and an initial line and the whole limit of these objects all are open.Limit must be sewn or connect the undertoe with the sealing object subsequently at end this.

This action need is configured to object on the sewing machine element, and object is discharged into for example one basket or other container by knitting machine in advance.This is usually by manually or by the complicated machinery induction system realizing.Same, this object needs to be expanded the limit to carry out the operation in other environment subsequently, for example flatiron socks or pairing socks before packing.

Summary of the invention

The objective of the invention is to make a kind of device, be used for simple, reliable end or the edge that also automatically expands out the cylindrical shape object, promptly typically expand the edge of opening socks or stocking.

According to a further aspect in the invention, another goal of the invention is to realize a kind of method, is used for simply, and the initial line that rises of fabric tube is opened in reliable and expansion automatically, is typically stocking or socks.

Those skilled in the art will know these and other goal of the invention and advantage by reading following content, and in fact they obtain by a device, comprises a pipe, and object is inserted into therein; A plurality of motor elements that between first closing position and second enable possition, move, it is configured in a port of export of said pipe; And the guiding and the bearing unit that are combined in the said port of export of said pipe, be used to guide the said pipe that is inserted into orientation towards said gripping elements.

This cylindrical shape object thereby be directed along pipe, so the edge of object arrives the gripping elements that it is expanded the limit.

A particularly advantageous embodiment according to apparatus of the present invention, this guiding and bearing unit comprise two balance formed bodies, its each outlet from pipe is extended towards the inside of pipe, and said balance formed body defines a passage that is used for said object mutually.The cross section of passage can be elongated so that layout circle tubular object makes its edge in being folded and flattening an of predetermined direction, and it is by longitudinal tensile strain decision of this channel cross-section.This has simplified gripping and the expansion limit of cylindrical shape object by gripping elements.Like this, four gripping elements of 90 ° of configurations of one-tenth can be by favourable imagination mutually around an axle.First gripping elements is to being arranged in the bearing of trend of cylindrical shape object passage, and two other gripping elements is arranged in each orthogonal direction.

According to of the present invention one current may first-selected embodiment, each of said two drip moldings provides an inclined lead and a directed face towards said object source direction, the inclined plane of two drip moldings has opposite oblique.For example, this guide surface can provide a straight substantially part and a spiral helicine substantially part.This shape makes and arrives at object and become it is configured in by guiding and the length that limits of bearing unit, the required part of narrow passage inside.In addition, this drip molding each a flat sides set can be provided.These two flat faces are preferably parallel to each other and be parallel to the axis of pipe, and they define the cross section that is elongated of cylindrical shape object in the side.

In an advantageous particularly embodiment of the present invention, each of said two formed bodies is made up of three parts; Constitute two lateral parts of one with a motor element about said pipe, and the mid portion with said pipe formation one; Said pipe and said element move mutually, so that the port of export of this element from pipe separated.Advantageously, this moving component can be provided for inserting the groove of gripping elements.

According to possible configuration, gripping elements can be supported by a circulus around the pipe axis, and is equipped with parts that are parallel to said pipe axis.Expanding the limit parts can be installed on this circulus to open the edge that is expanded the cylindrical shape object of opening in advance by gripping elements.This gripping elements for example can comprise many extending shanks that are parallel to the pipe axis.These shanks can move about the latter's axis is parallel, on the outer surface of pipe the inner edge of cylindrical shape object is routed up.

In a particularly advantageous embodiment, this gripping elements be operated at first control by two shaping gripping elements form in order to grip and open first of cylindrical shape object grip right, grip after moving said first, control second pair of gripping elements, it compensates mutually to grip and to open the cylindrical shape object.

This gripping elements is suction element preferably, but can make in any other mode, for example with clamp form or other mechanical device.

For the cylindrical shape object is sucked in the pipe, this pipe can advantageously be connected to a suction tube, and its opening is positioned at the relative direction of said gripping elements about the said pipe port of export.Yet according to an alternate embodiment, this suction can be by directly being obtained when holding assembly is pneumatic form.In this case, the port of export of pipe is connected with shutoff device with interception, and it prevents that the cylindrical shape object from deviating from and also prevent the suction of intake-gas from the outside.If suction obtains by the suction tube that is installed in the pipe port of export temporarily, install one and prevent that the cylindrical shape object from entering the interception parts of suction tube, so that the cylindrical shape object stops with gripping elements.

According to of the present invention be used for expanding open an Elastic Circular tubular object, the particularly method at a circular knitting object edge, comprise with the next stage:

One end air-flow of-Chao pipe transmits said object;

-according to a plurality of gripping elements edge-oriented with said object in a precalculated position;

-opening gripping elements expands out said object edge whereby.

Be described in additional claim according to the other favorable characteristics of apparatus of the present invention embodiment and form, and following by more detailed description.

In the following description, the element that the orientation of object and positioner and being used for expands out the object edge is described at the context of a special device, and this special device is used for object is transferred to the second place and the special entity sealing toe that vice versa from primary importance with one.Yet this respect is not what restricted.It is understood that the present invention can be implemented and can be inserted in the different devices in a different environment, also can only be used to expand open the object that is transferred to other form machinery subsequently.

Description of drawings

The present invention will better be understood by subsequently description and enclosed accompanying drawing, and it shows a special non-limiting example of the present invention.In the accompanying drawings more specifically:

-Fig. 1 is one and is used to rout up inner edge, the perspective view of the device of transmission and closed circle tubular object;

-Figure 1A has shown a perspective view, and it is similar to the view shown in Fig. 1 but has removed some parts;

-Fig. 2 has shown a perspective view that is equipped with at the knitting machine that installs shown in Fig. 1 and 2;

-Fig. 3 has shown a perspective view that is used to expand out the gripping elements part of object;

-Fig. 4 has shown among a Fig. 3 part from the perspective view of different points of observation, shows to be used for the expansion that the inside of cylindrical shape object is routed up is opened and clamping element,

-Fig. 5 has shown an independent perspective view that is used for the device of object channeling conduct and orientation, and this object is supplied to and expands the device of opening, routing up inner edge and seal in the undertoe zone,

-Fig. 6 A and 6B have shown that along two transversal perspective views of two vertical orthogonal planes of a pipe this pipe has the grip device and the device that is used for channeling conduct of cylindrical shape object and orientation that is used to expand out the cylindrical shape object,

-Fig. 7 has shown the effect on guiding and the bearing unit object in entering pipe,

-Fig. 8 A has shown a perspective cross-sectional view according to a pipe fore-and-aft plane,

-Fig. 8 B has shown the terminal part perspective view of a pipe support and pneumatic transfer tube,

-Fig. 9 A and 9B have shown two possible positions that can be configured in wherein when the cylindrical shape object arrives the pipe end, it must rout up inner edge at undertoe before subsequent step is closed in this position,

-Figure 10 to 13 has shown four successive stages that expand the limit operation, the elastic edge that comprises the cylindrical shape object in a cross section perpendicular to the pipe axis,

-Figure 14 to 18 has shown the successive stages that is positioned at cylindrical shape object elastic edge reverse operating on the pipe outer surface in longitudinal cross-section,

-Figure 19 and 20 is longitudinal cross-sections, has shown the successive stages that is positioned at cylindrical shape object reverse operating on the pipe outer surface,

-Figure 21 A to 21D has shown four successive stages of the operation that is used to adjust cylindrical shape object edge,

-Figure 22 has shown the pipe of on the outer surface the object inner edge being routed up before second station that undertoe is closed being transferred to,

-Figure 23 to 28 shown the successive stages of the tensioning operation that is used for closed toe with the longitudinal cross-section view and had the beginning of unloading phase of the object of closed toe,

-Figure 29 and 30 is the transversal perspective views along two orthogonal fore-and-aft planes of the pipe that has guiding and bearing unit in different embodiment.

The specific embodiment

Fig. 1,1A and 2 have shown that this device can be applicable to knitting machine, is typically circular knitter, is used for the production of cylindrical shape object, for example socks, stocking or analog according to a device of the present invention.This device refers generally to generation by Reference numeral 1, and the Reference numeral 2 among Fig. 2 has schematically referred to the circular knitter of the known type of coupling apparatus 1.

Device 1 shows one and is supporting two pipe 5A parallel to each other, the support 3 of 5B.This support 3 is parallel to two pipe 5A around one, the axle A-A rotation of 5B axis, the rotatablely moving by actuator 7 controls that are configured in fixed frame 9 tops and supported by fixed frame 9 of support 3.This can carry out moving upward of support before rotatablely moving, and thereby moving upward of pipe mounted thereto taken place, to avoid and to be centered around of the collision (in rotary course) of two pipes than the mechanical part of end portion.

This support Rotate 180 ° on axle A-A, two

pipe

5A, 5B alternately are positioned at two positions side by side.This motion can be an alternating movement, or rotatablely moves the intermittence of a no reverse rotation.

Expand the limit device and be configured in Figure 1A, the primary importance that pipe is positioned among the 1B.This expansion limit device comprises gripping elements and expands the limit device that it is used for remaining on the elastic edge that primary importance is supplied to each object that enters pipe, opens elastic edge to expand on the outer surface of pipe itself.In addition, be provided for the device on the outer surface of pipe, cylindrical shape object inner edge routed up.Being combined among Fig. 1 of these setting elements totally referred to by Reference numeral 1, and for a more clear part that in Figure 1A, removes these elements.

Angular orientation device and tensioning apparatus are configured in the second place, said tensioning apparatus and angular orientation device are totally referred to by Reference numeral 13, undertoe with tractive cylindrical shape object seals, and locking device 15, special is Sewing machines, is used for by making or the undertoe of other operation (for example sew up) sealing object.

Being used to prepare and being used to seal various stages of object undertoe will be following by more detailed description.

The cylindrical shape object 2 that is made by Knitting Machinery 2 is conducted to device 1 by a pneumatic transfer pipe 17, this pneumatic transfer pipe 17 has a crooked 17A of the terminal with 90 ° of angle configurations, the crooked 17A of terminal is towards the pipe 5A that is in primary importance temporarily, the first end of 5B, just pipe 5A is in Fig. 1,1A, the position in 2.This pneumatic transfer pipe 17 is connected to a conduit 19 of drawing than lower part from Knitting Machinery 2 syringes.The blocking apparatus that is referred generally to generation by Reference numeral 21 is configured between pipe 17 and the conduit 19.

Collection is made by machine 2 and from required as described below generation of suction force of object that knitting needle unloads, keeps interception element 21

open pipe

5A or 5B to produce by be in primary importance temporarily.

This cylindrical shape object is transferred to primary importance in the second place once more by Sewing machines 15 sealing back, and is sucked by a pneumatic unloading conduit 23 and removes.For this purpose, conduit 23 is connected to pneumatic transfer pipe 17, and is connected to an accessory 25, and accessory 25 is connected to an aspirator (not shown).

Object is sucked out from the pipe 5A or the 5B inside of being inserted again after closed toe, and transmits to arrive a box 27 along pipe 17 with along conduit 23, is removed in a known mode at it.In this stage, blocking apparatus 21 is closed.Unload finish object after, new object is sucked from conduit 19 and transfer tube 17.

Press following work to the device that this point is described.First object that is made by machine 2 is inhaled into to arrive pipe 5A by conduit 19 and transfer tube 17.Because object makes by machine 2, start from elastic edge and undertoe finally, when it arrives pipe 5A elastic edge formerly and undertoe after, just with respect to the downstream of direction of advance.Arrive pipe 5A than after the end portion, this object is by being referred generally to generation and inner edge being routed up on the outer surface of pipe 5A by parts in greater detail hereinafter by Reference numeral 11.

Behind the location, support 3 rotates 180 ° and pipe 5A, and the state of 5B is from inside to outside routed up, so pipe 5A is in the second place and pipe 5B is brought to primary importance.At this, the undertoe of object is pulled and sews up according to being similar to method that disclose among the EP-A-1118700 or similar substantially.

During tensioning and sew application, be inserted into the pipe 5B that temporarily is in primary importance from another object of machine 2.Closed toe is from inside to outside routed up and prepared to this object at the outer surface of pipe 5B.

Seal first object and after primary importance is located second object in the second place, support 3 rotates 180 ° once more with

pipe

5A, and 5B goes to the configuration shown in Fig. 1.First object is sucked and unloads allowing the introducing of next object along pipe 17 and conduit 23, and the undertoe of second object is closed in the second place.

Object can be routed up inner edge for the second time after first or the second place that are equipped with the device that is used to carry out operation as described below are in closed toe.

As mentioned above, know that very device 1 can be by processing the " locked in " operation of two objects realization undertoes simultaneously two positions, object passes through mechanism 3 between them, 5A, 5B transmission.In this case, this two of action need sealing is overlapping.Therefore, what closed toe needed has been reduced total time, and install 1 can seal from all objects of the knitting machine 2 of its associating.

Fig. 3 to 7 has shown in detail and has been used for the cylindrical shape object is expanded limit and the parts of routing up inner edge that this cylindrical shape object is supplied with by pneumatic transfer pipe 17 respectively and entered one or another

pipe

5A, 5B inside.

The combination of parts 11 is supported by a circulus 31, this circulus and the pipe 5A that temporarily is in primary importance, and 5B is coaxial.This circulus 31 is being parallel to pipe 5A by one, and (Fig. 1 1A) supports the slide block 33 of motion on the vertical guide rail 36 of 5B axis.This circulus support a plurality of can radially movable pressurizers 35, its each be connected with each actuator 37 (especially referring to Fig. 4).As being described better hereinafter, pressurizer 35 is routed up cylindrical shape object inner edge and is had other miscellaneous function on the outer surface of

pipe

5A or 5B.

Above pressurizer 35 radially, circulus 31 supports four linear actuators 39, cylinder-piston actuater for example, and the moving of each slide block 41 that its control is moved along guide rail 43, it is perpendicular to pipe 5A, the axis of 5B.Each slide block 41 has a corresponding pneumatic gripping elements.First gripping elements to (balance mutually) is referred to by Reference numeral 45A, and second pair gripping elements is referred to by Reference numeral 45B.The motion of gripping elements and slide block 41 is referred to by double-head arrow f41.

Each gripping elements is equipped with a dust collecter 47 that is applied to manage 49 first end, and second end of pipe 49 is connected to an aspiration by a flexible pipe.For this flexible pipe of the succinct purpose of accompanying drawing and aspiration are not illustrated.

Other shank 51 of branch (in detail referring to Fig. 6 A and 6B) and each gripping elements 45A, 45B connects.These shanks are formed for expanding out the expansion limit device at the edge of the undertoe cylindrical shape object that must be closed with respect to object.

Each shank is supported by the slide block 53 of a motion on guide rail 55, and this guide rail and each slide block 41 are one.Each slide block 53 is fastened to an annex 59 with each slide block 41 one by a stiff spring 57, and therefore four shanks 51 are compacted towards the axis of circulus 31 and

pipe

5A and 5B, and this is for will be in the following purpose that is described.

A moving cell 31 is configured in the below of circulus.This moving cell comprises the upper end of the suction tube 61 that is supported by support 63, and this support 63 is movable and controlled according to double-head arrow f63 by an actuator (schematically being referred to by Reference numeral 64) at vertical direction.Pipe 61 is connected to a suction source by a flexible pipe (but not shown in figures).

As clear description the among Fig. 5, it has shown the suction tube 61 of isolating with other assembly of device, and the upper part of suction tube 61 has formed and has been used for gripping elements 45A, the groove that 45B passes through, and it is referred to by Reference numeral 65.Below groove 65, suction tube 61 provides an interception element 67 of being made up of a grid, is sucked the inside that the cylindrical shape object enters pipe with prevention.

By Reference numeral 71A, four shaping annexes that 71B and 73A, 73B refer to are placed in and are on the suction tube 61 between four grooves 65 respectively.Annex 71A and 73A be symmetry mutually.Same, annex 71B and 73B also are mutual symmetries.

Symmetrical mutually shaping

annex

71C, 73C is installed in each pipe 5A, the inside of 5B, and in Fig. 5, demonstrate and each pipe isolation.Shaping annex 71C, the shape of 73C and shaping annex 71A, 71B, 73A, the 73B complementation, and constitute one with suction tube 61, so annex 71C is inserted into annex 71A, formed body of formation between the 71B, its shape be inserted into annex 73A as annex 73C, in the time of between the 73B by annex 73A, the shape symmetry of the formed body that 73B, 73C form.Two are symmetrically body refer generally to generation by Reference numeral 71 and 73 in Fig. 6 A and 6B, and wherein they are shown like them and are made up of single parts, and each pipe 5A wherein, and 5B has been removed to clearly illustrate the shape of formed body.

Suction tube 61 can move along the direction of double-head arrow f63 with respect to pipe 5A that is in device 1 primary importance or 5B temporarily, allows the cylindrical shape object by holding assembly 45A, and the expansion limit of 45B is as hereinafter clear description.

Formed body 71,73 passes through in conjunction with

annex

71A, 71B, and 71C and 73A, 73B, 73C forms, and is formed for arriving

pipe

5A or 5B channeling conduct of cylindrical shape object and the directed device than end portion.For this purpose, formed body 71 and 73 presents 3 main differing formed.Each formed body presents one by Reference numeral S ₇₁And S ₇₃First face of cylinder that refers to is in correspondence with each other in the inboard face of cylinder of pipe 5A or 5B.In addition, each formed body presents one by Reference numeral X ₇₁And X ₇₃Orientation that refers to and guide surface.The development on these surfaces is straight substantially, and regional dip in the above, below zone shape substantially in the shape of a spiral.Surface X ₇₁And X ₇₃Towards the end of pipe, from then on the end enters the fabric tube that will be directed and guide.In addition, each formed body 71,73 presents one by Reference numeral Y ₇₁And Y ₇₃The 3rd flat surface that refers to, it is parallel to each other and be parallel to each pipe 5A, and the axis of 5B limits the knitted article passage area, this passage area is being positioned near pipe 5A, and the lower region of two formed bodies of the 5B port of export has elongated cross section.

Formed body 71 and 73 structure and shape are carried out orientation and guiding to the cylindrical shape object that arrives

pipe

5A or 5B inside.Be in the formed body 71 of cylindrical shape object position, the effect of 73 structure form is clearly described in Fig. 7 A to 7F, wherein Fig. 7 A is two formed bodies 71,73 perspective view, Fig. 7 B to 7F is basis several cross sections perpendicular to several planes of

pipe

5A or 5B axis, wherein these planes are among Fig. 7 A by Reference numeral B, C, D, the position that E, F refer to.In these figure, Reference numeral M refers to the cylindrical shape object, and it illustrates a lateral cross of the elastic edge of object itself.In Fig. 7 A, it is four layers and with respect to surperficial Y by folding that object M is shown as elastic edge ₇₁, Y ₇₃Be vertically oriented.This is a kind of possible configuration that object can have when the pneumatic transfer pipe is come.Generally speaking, object M will always be arrived with approximate folding in such a way, but have any angle direction on the pipe axis.

According to pushing ahead object M and surperficial X on the arrow formed body that fM is shown in 71,73 ₇₁And X ₇₃Bump against, therefore object is compelled to go to respect to the initial direction rotation and is 90 ° direction to the maximum, just is configured to be parallel to surperficial Y ₇₁, Y ₇₃Do not consider the position of object M when object M and formed body 71,73 interference, the surperficial X of formed body ₇₁, X ₇₃Cause possible rotation object being delivered to the final position that refers to by Reference numeral M1, or deliver to the position of this position Rotate 180 relatively °, just as shown in Fig. 7 A to 7F, always be parallel to surperficial Y ₇₁, Y ₇₃This point has promoted by the expansion limit of formerly putting down in writing parts and has routed up object inner edge, following marginal data.

As shown in Figure 6A and 6B and among Fig. 8 A in detail shown in, it has shown pipe 5A, the upper end of 5B, pipe each by in two and outer coaxial circle tube element mutually form, in Fig. 8 A, refer to by Reference numeral 5X and 5Y.Circle tube element 5X can be in a bit of distance of slides within of the circle tube element 5Y that is directly supported by support 3.Spiral compression spring 6 is contained in two circle tube element 5X, and is in the gap between the 5Y and be tending towards oppressing inner cylindrical element 5X upwards, just outstanding from the top of circle tube element 5Y.(perhaps more accurate is their part 71C to formed

body

71,73, and 73C) with each pipe 5A, the inner cylindrical element 5X of 5B constitutes one.

By demonstration in Fig. 8 B and at parts described below, inner cylindrical element 5X can be pushed down and slide in pipe 5Y, overcomes the elastic force of spring 6 thus.

(see Fig. 8 B) for this purpose, pneumatic transfer pipe 17 is finished by a telescopic elongated portion 17C with collar 17D.The downward elongation of part 17C is by 18 controls of a pair of cylinder-piston actuater, and one of them actuator 18 can be seen in Fig. 8 B and at Fig. 1,1A, and two actuators can be seen in 2.By moving down part 17C, collar 17D rests on the corresponding collar 5Z by downward promotion circle tube element 5X, and collar 5Z and the inner cylindrical element 5X of pipe 5A that temporarily is in primary importance or 5B constitute one.This makes inner cylindrical element 5X telescopically slide with respect to outer cylindrical element 5Y, and with pneumatic transfer pipe 17 pneumatic pipe 5A or the 5B of being connected to, is transferred to

pipe

5A or 5B with the object with machine 2 from transfer tube 17.Circle tube element 5X, the scalable relatively sliding function of 5Y will be illustrated at the paragraph that description is used for routing up the method for cylindrical shape object inner edge.

Device is used for that the cylindrical shape object is positioned at the pipe 5A that is in primary importance or 5B and goes up following being illustrated that operate in order to closed toe subsequently.

Operation described below can alternatively realize on the pipe 5A or on pipe 5B.Operation reference circle cylindrical part 5A described here is explained.We suppose that pipe 5A will receive cylindrical shape object M from machine 2.Actuator 7 makes support 3 be in the certain angle position, so that press Fig. 1, and the position configuration pipe 5A among the 1A.Actuator 63 suction tube 61 that moves up, this makes the annex 71A with its formation one, and the inside that 71B, 73A, 73B enter pipe 5A (has

annex

71C, 73C) to finish formed body 71,73.Extensible member 17D is fallen will manage 17 to be connected with the inside of pipe 5A is pneumatic.In conduit 19, transfer tube 17 and pipe 5A, produce vacuum by suction tube 61 (blocking apparatus 21 is opened).In case be done by machine 2 knitting objects, it is discharged by knitting needle and is sucked towards pipe 5A.Object is opened by expansion along elastic edge and undertoe.It moves along pneumatic channel, elastic edge preceding and undertoe after.

Vacuum pulling cylindrical shape object M in pneumatic route runs into grid 67 up to it, and grid 67 constitutes one with suction tube 61.Owing to form the formed body 71 of guiding and bearing unit, 73 existence, object arrives pipe 5A with free position, when it contacts with grid 67, it is with a configuration of two states schematically providing among Fig. 9 A and the 9B, Fig. 9 A and 9B are near gripping elements 45A, the vertical cross-section of 45B about pipe 5A axis.

With respect to the arrival gripping elements 45A of object M, 45B is as shown in Figure 9A and 9B location in advance: balance gripping elements 45A is bigger with respect to balance gripping elements 45B distance.Parts 45A is along corresponding to by surperficial Y ₇₁, Y ₇₃On the larger sized direction of formed body 71,73, arrange in line, and parts 45B arranges in a straight line on larger sized direction perpendicular to this than the cross section gap of the prolongation of lower part qualification.

Because gripping elements 45A, 45B directly is configured in grid 67 tops, they are in such position, wherein processed from the elastic edge of the socks of knitting machine 2 or other cylindrical shape object, and this edge of gripping that they can be as described below and on the outer surface of pipe 5A, its inner edge being routed up.

As object M arrival Fig. 9 A, when one shown in the 9B or another position, the swabbing action in suction tube 61 can be stopped, and balance gripping elements 45B can be closed and compress cylindrical shape object M as shown in Figure 10 mutually.After having arrived this position, swabbing action can be activated by gripping elements 45B, so that they can grip the edge of cylindrical shape object at two equilibrium regions.Simultaneously, suction tube 61 can by actuator 63 be moved downward and away from.Like this, around gripping elements 45A, 45B has produced a gap, and said gripping elements is positioned at the below of pipe 5A than low edge.

The expansion limit of holding assembly 45B moves through each actuator 39 controls, thereby expands and open the cylindrical shape object M that is hanging down the position of inlet outburst area from pipe 5A being in shown in Figure 11.

Subsequently, gripping elements 45A is adjacent to each other and compress the edge of cylindrical shape object M in being contained in two zones between the gripping elements 45B, as shown in Figure 12.Compress between two gripping elements 45A front surfaces after the cylindrical shape object M, gripping elements 45A is activated by produce a swabbing action in inside, so the cylindrical shape object is engaged by element.The complete opening that motion causes being in the object M of position shown in Figure 13 is opened in gripping elements 45A expansion subsequently.

Figure 14 has shown the longitudinal cross-section of pipe 5A when the elastic edge of object M is opened in expansion.Reference numeral MB refers to the elastic edge of object, and Reference numeral MP refers to undertoe, just will be closed the edge that the back forms the object closed toe in the device second place.Figure 15 and 20 has shown the operation that is used for routing up on pipe 5A according to same cross section cylindrical shape object M inner edge.

In Figure 15, shank 51 has been inserted into the expansion of cylindrical shape object M and has opened among the MB of limit.Shank maintains the edge after gripping component failure, and the fabric of edge MB is not investing gripping elements admittedly.Actuator 39 is opened shank 51 and is arrived the position as shown in Figure 16 shown in arrow among Figure 15.Four shanks 51 this moment (having only two in them appears in the viewgraph of cross-section) are in such position of opening more greatly so that the edge MB of object M is crossed from the porch of pipe 5A.Do not get rid of and expand the limit operation, for example by equally being single group grip device of mechanical type yet by the diverse ways realization.Yet configuration described herein is reliable especially, because it avoids injuring by accident the fabric that constitutes object.

As shown in Figure 14 and 15, when the edge MB of object M was opened in expansion, inner cylindrical element 5X was in retracted position, just along circle tube element 5Y indentation.This obtains (Fig. 8 B) by ring set 17D and the part 17C that upwards returns pneumatic transfer pipe 17.On the contrary, in Figure 16, inner cylindrical element 5X is pushed into lower position once more, and just its inlet aligns with the inlet of outer cylindrical element 5Y.This motion has changed annex 71C, the position of 73C, and annex 71C, 73C and circle tube element 5X constitute one with respect to the low porch of pipe 5A.

The circulus 31 of supporting needle rod 51 makes the elastic edge MB of object M rout up inner edge on the outer surface of pipe 5A according to moving upward of arrow f31, as shown in Figure 17 and 18.Shank 51 is by indentation.

Rout up on the outer surface of pipe 5A after the edge MB of object M, radially pressurizer compresses edge itself once more, and the structure 31 that also supports said radially pressurizer moved up in addition (seeing accompanying drawing 19,20).Like this, radially pressurizer 35 moves cylindrical shape object M, make its from the inside of pipe 5A to outer surface, the inner edge of cylindrical shape object M is routed up, it also takes away the edge MP that the edge by the undertoe that will be closed forms on the pipe outer surface.The stroke more than one of structure 31 may need in the situation than surplus spare, wherein expand the limit radially pressurizer 35 be moved downward and moved up once more and make radially that pressurizer 35 is enclosed on the pipe 5A.

When the edge MP that is used to form closed toe is brought on the outer surface of pipe 5A, just when object M has routed up on inner edge and the outer surface at pipe fully, one is that the support with support cylinder shape parts 5A rises, rotates 180 ° and be reduced to the second place and be performed in order to the operation of closed toe.

As preliminary step (preliminarly), edge MP may need to be aligned and to be parallel to the ingress edge of pipe 5A.This step operation can first or the second place is performed and in Figure 21 A to 21D by diagram.In Figure 21 A, object M is routed up inner edge fully on the outer surface of pipe 5A, and the edge MP that is used to form closed toe is by interim, the irregular retracted position that is configured in respect to pipe 5A terminal edges.The consistent below that is configured in edge MP of radial compaction device 35, and the outer surface of convergence pipe with the terminal area of pipe.They be raised then with edge MP can and and make this edge segment distance that upwards slides, this segment distance is enough to guarantee that edge MP leans against (Figure 21 B) on all pressurizers 35.Like this, edge MP is approximate to be arranged on the desirable circumference, and this circumference top is cut in radially pressurizer 35.At this moment, pressurizer 35 is expanded to open and moved up in addition arrives a directly height (Figure 21 C) above edge MP, and is closed to be pressed on the cylindrical shape object M.In with the next stage, the pressurizer of cutting out is lowered to align with the low terminal edges of pipe 5A in Figure 21 D configuration.This process can be controlled, for example by the optical pickocff (not shown).In Figure 21 D, edge MP in one plane arranges, the axis normal of this plane and pipe and its comprise pipe 5A than low edge.Being used to adjust edge MP makes the process of its alignment can be realized that described similar presser foot is installed in said position and is used for other function as described below in the second place by similar radial compaction device.

Figure 22 has shown the longitudinal cross-section of pipe 5A after operation, and this operation is that the edge MP that routed up the object inner edge and make object before 180 ° of swinging mountings 3 aligns, and this support transmission pipe 5A is to the second place.

Figure 23 and 27 had shown before closed toe the operation at second place tensioning cylindrical shape object.

A circulus 81 that is similar to structure 31 is configured in the second place and supports (seeing Fig. 1 and 2) by a slide block that moves 83 on upright guide rail 85.This circulus 81 has radially pressurizer 87, and pressurizer 87 is similar to radially pressurizer 35 and each actuator 37 by actuator 89 operations.The circulus 81 that has a radially pressurizer mounted thereto can be done the angle and rotate on its axis, its axis be positioned at the pipe 5A of the second place or the axis of 5B temporarily and coincide.This angular movement provides (Fig. 1-2) by an actuator 90.

Like this, radial compaction device 87 is pressed against on the outer surface of pipe M, the edge MP of cylindrical shape object can be located by the angle with respect to pipe 5A, to obtain to be connected to form two edges of closed toe, and they being begun the seam radially relative along the terminal area of circle tube element 5Y with two from outer cylindrical element 5Y edge or groove 5D aligns, it can be found out in Figure 25 especially.If pipe 5A is fixed by certain angle with respect to support 3, perhaps its angle orientation is known, and the angle position of groove 5D is known in advance.Photoelectric tube or other optical pickocff 91 (shown in Figure 25) can be used the correct angle position with identification cylindrical shape object M, and for example the yarn by a knitting suitable color makes marks.The angle directional operation that this cylindrical shape object is mounted the pipe on it with respect to object also can first rather than the second place be implemented.In addition, it also can keep constant being implemented of object angle by slewing circle tubular parts and by the radial compaction device.Generally speaking, angle is directed by the mutual moving article of pipe is obtained relatively subsequently, and wherein fixed part can be that one of them also can be another.

Afterwards or in said operating period, two carriage 13A that belong to tensioning apparatus 13 can be introduced in the inside (Figure 24,25) of pipe from the bottom at angle adjustment cylindrical shape object M (Figure 23,24).After angle orientation, carriage 13A can be opened (Figure 26), radially passes the relative groove 5D of diametric(al) to the edge MP of outer lug with the tensioning object, as shown in Figure 26 from pipe 5A.Carriage 13A takes pipe below to and enters a zone in the edge that will be tensioned that moves downward subsequently, it is made by Sewing machines 15 or other suitable device in this zone, the guillotine that the fabric that other device for example is equipped with an edge MP passes therein." locked in " operation is implemented by this way, itself is known and will not describe at this.

After closed toe, object M can be routed up inner edge once more and enter among the pipe 5A and be removed.This operation is performed by the radial compaction device once more.In the illustrated embodiment, owing to have only one to be used to supply with the new object that will be closed and to be used to remove the pneumatic transfer pipe 17 that has sealed object, the object inner edge routed up and away from second step operate in primary importance and be performed, wherein pipe 5A returns by 180 ° of rotations of support 3.Therefore in this case, when a suction that makes progress was resulted from the inside of pipe 5A, radial compaction device 35 was carried out second step operation of routing up the object inner edge.Figure 28 has shown that inner edge for the second time routs up the initial period of operation, and its one or more alternated travels by radial compaction device 35 obtain, and are sucked up to elastic edge MB and enter pipe 5A.

Possible situation at second place unloading sealing object is not excluded.For example, be similar to being drawn into pipe and can being mounted of transfer tube 17, and be configured in the top of transmitting device and the pipe 5A that temporarily is in the second place or 5B in line.Like this, second step of routing up cylindrical shape object inner edge after closed toe operates in the second place and is performed by radial compaction device 87.

Nature, in this case, the distribution in each stage will be different between two positions.In any case this order will require to expand out the operation of elastic edge MB and the operation of closed toe MP must be performed two different positions, just in the primary importance and the second place.Remaining operation can be in these two positions on the other hand, and one or another are performed, and as required or operator's selection distribute, consider to minimize the needs of closed toe required time all the time.Especially, the angular orientation of object (Figure 23,24) can be performed in primary importance, and circulus 31 moves angle in this case.The adjustment of edge MP (Figure 21 A-21D) can be carried out by the radial compaction device 87 that is positioned at the second place in principle.As described, the object inner edge is routed up and second step operation that it unloads can be carried out in the second place.

Figure 29 has shown different embodiment that install with 30 according to two viewgraph of cross-section, and these two figure are similar to the cross sectional view that shows among Fig. 6 A and the 6B.The parts that identical Reference numeral refers to and Fig. 6 A, the same or corresponding among the 6B.This second embodiment is with previous different, and it has different configurations with respect to guiding more than the grip device and bearing unit.In this example, pipe 5A, the terminal part of 5B (bottom) is made up of an inner frusto-conical surface 101, the elastic edge MB of its aimming circle tubular object towards with holding assembly 45A, four peripheries 103 of the corresponding configuration of 45B.By this way, the edge of cylindrical shape object is stretched on the axis of other pipe and by grip device and grips.This solution is than the previous advantage that has still less, because the position that the cylindrical shape object is organized is not determined, and gripping elements 45A, a plurality of repeating motions of 45B may need it is expanded limit.

Second embodiment is different with last embodiment, also because provide a collar 8 to reduce pipe 5A, the cross section of 5B in first embodiment.The collar has the importing cross section that is shaped to promote passing through of cylindrical shape object.This point prevents that the object collision from entering in the formed body 71,73, and it is adjusted for orientation subsequently by the product that restriction enters.

Notice that accompanying drawing only provides by embodiment, and many variations can be performed in structure of the present invention and embodiment in this imagination, it does not depart from the scope of the present invention.The Reference numeral that occurs in additional claim has such effect, and it is convenient to understand claim and do not limit the protection domain that claim is advocated with reference to specification.

Claims

1. one kind is used for the device that the edge of Elastic Circular tubular object, particularly fabric tube is opened in expansion, and it is characterized in that: it comprises a pipe that inserts object therein; Expand a plurality of gripping elements that move between the open position at first detent position and second, it is configured in a port of export of said pipe; And the guiding and the bearing unit that are incorporated into the said port of export of said pipe, be used to guide with directed be inserted into the cylindrical shape object of said pipe towards said gripping elements.

2. device as claimed in claim 1, it is characterized in that: said guiding and bearing unit comprise the formed body of two balances, its said port of export from pipe extends towards the inside of pipe, and the formed body of said balance defines a passage that is used for said object mutually.

3. as the said device of claim 2, it is characterized in that: said passage presents the cross section of an elongation.

4. as the one or more described device of above-mentioned claim, it is characterized in that: four gripping elements become 90 ° of configurations mutually around an axis.

5. as claim 3 or 4 described devices, it is characterized in that: two compensation mutually of said gripping elements, it is arranged according to the larger-diameter direction that is basically parallel to said channel cross-section, and two other gripping elements compensates mutually, and it is arranged according to being basically perpendicular to said larger-diameter direction.

6. as the one or more described device of claim 2 to 5, it is characterized in that: each of said two formed bodies presents an inclined lead and a directed face towards said object source direction, and the inclined plane of two formed bodies has opposite oblique.

7. device as claimed in claim 6 is characterized in that: each said inclined plane has a straight substantially part and a spiral substantially part.

8. device as claimed in claim 7 is characterized in that: said two formed bodies have two straight sides, and its side defines the cross section passage of said elongation.

9. as claim 7 or 8 described devices, it is characterized in that: the said flat sides set of said formed body is parallel to each other basically and be parallel to the axis of pipe.

10. as the one or more described device of claim 2 to 9, it is characterized in that: each said formed body presents the side of a substantially cylindrical, and its shape is consistent with the shape of the inner surface of pipe.

11. one or more described device as claim 2 to 10, it is characterized in that: each of said two formed bodies is made up of three parts: constitute two lateral parts of one with a motor element about said pipe, and with a mid portion of said pipe formation one; Said pipe and said element can reverse motions, so that the port of export of element from pipe separated.

12. device as claimed in claim 11 is characterized in that: said motor element has the groove that is used to insert said gripping elements.

13. device as claimed in claim 12, it is characterized in that: said motor element has two said bases, the gripping elements that it is used for disposing between the two positions, the said element of each of itself and said two formed bodies constitutes one, when motor element during in the sealing of the port of export of said pipe, each of said two grooves constitutes the other gauge of various piece of one by each formed body with pipe.

14. the one or more described device of claim as described above, it is characterized in that: said gripping elements is supported by a circulus, and this circulus is around the axis of pipe and have a motion that is parallel to said pipe axis.

15. the one or more described device of claim is characterized in that: install and expand the limit element, so that expand the edge of opening said cylindrical shape object as described above.

16. device as claimed in claim 15 is characterized in that: said expansion limit device is included in the shank of the axis direction extension that is basically parallel to said pipe.

17. as claim 14 and 15 described devices, it is characterized in that: said expansion limit device is supported by said motion circulus.

18. as claim 16 and 17 described devices, it is characterized in that: it comprises many and the same number of said shank of gripping elements.

19. as the described device of claim 16,17 or 18, it is characterized in that: said shank has one in the first mutual detent position and second motion of expanding between the open position.

20. device as claimed in claim 19 is characterized in that: said shank said first and the said second place between motion be basically parallel to said gripping elements in its motion between first and second positions separately.

21. device as claimed in claim 14 at least is characterized in that: described gripping elements is installed on the slide block, this slide block with said motion circulus all-in-one-piece guide rail on slide, said slide block is driven by separately actuator.

22. as claim 17 and 21 described devices, it is characterized in that: said shank is connected to said slide block by elasticity.

23. the one or more described device of claim as described above, it is characterized in that: said gripping elements is operating as the motion that is moved to small part.

24. as claim 4 and 23 described devices, it is characterized in that: said gripping elements is operated like this, by initial control be used to grip by two and expand out that the balance gripping elements of cylindrical shape object forms first grip right, and, grip after moving said first, by controlling the right motion of second gripping elements, this gripping elements compensation is mutually opened the cylindrical shape object with gripping and expansion.

25. as claim 19 and 24 described devices, it is characterized in that: said shank with the right motion of said second gripping elements mutually coordinated mode be operated, said second gripping elements is to bringing the object that is kept and opened by expansion subsequently by said gripping elements into.

26. the one or more described device of claim as described above, it is characterized in that: said gripping elements is a suction element.

27. the one or more described device of claim as described above, it is characterized in that: said pipe can be connected to a suction tube, and its inlet is configured in said gripping elements about the opposite side of the port of export of said pipe.

28. device as claimed in claim 27 is characterized in that: it is included in the device of interception cylindrical shape object between gripping elements and the suction tube inlet.

29. as claim 11 and 24 or 11 and 28 described devices, it is characterized in that: said suction tube is connected to said motor element.

30. device as claimed in claim 14 at least, it is characterized in that: the said motion circulus that supports said gripping elements comprises the radial compaction device, is used to engage said object and makes it along with said motion circulus is slided on the outer surface of said pipe about the motion of said pipe.

31. the one or more described device of claim as described above is characterized in that: it comprises and is used to the sensor of checking object to be gripped by said gripping elements.

32. the one or more described device of claim as described above, it is characterized in that: said pipe is made up of two cylinder elements, these two cylinder elements are to insert in another and axially-movable mutually with one, and at least a portion of said guiding and bearing unit and inner most cylinder element constitute one.

33. device as claimed in claim 32 is characterized in that: outermost cylinder element presents a slit of developing and be parallel to the pipe axis from the port of export.

34. the one or more described device of claim as described above, it is characterized in that: an inside that is used to reduce be configured in the collar of the channel cross-section of pipe said pipe is in the downstream of said guiding and bearing unit in the direction of advance of cylindrical shape object.

35. the one or more described device of claim as described above, it is characterized in that: the said guiding of cylindrical shape object and bearing unit present a frustum of a cone, and it has four faces of cylinder consistent with said gripping elements.

Open an Elastic Circular tubular object, the particularly method at the edge of a fabric tube 36. be used for expanding, comprise with the next stage:

-towards the said object of an end pneumatic transfer of pipe;

-edge-oriented with said object in a precalculated position about many gripping elements;

-by with will be kept said object by the consistent said gripping elements in the edge that expansion is opened;

-expand and open gripping elements, expand the said edge of opening object whereby.

37. method as claimed in claim 36 comprised with the next stage:

-open a plurality of expansion opening apparatus of insertion in the edge in the expansion of said object;

-make it consistent by said expansion opening apparatus tensioning object with its edge;

-by the said expansion opening apparatus on said pipe outer surface the edge of inner is routed up.

38. method as claimed in claim 37 is included in the stage of routing up whole object inner edges on the outer surface of said pipe;

39. one or more described method as claim 36 to 38, wherein the said edge of object is directed to show such form, it is approximately perpendicular to the right first direction aligned with each other of the first said balance gripping elements, and wherein second gripping elements is to being aligned and compensating along second direction, and it is in fact perpendicular to said first direction.

40. method as claimed in claim 39, wherein said object by said first gripping elements to engagement and be stretched along said first direction, and second pair of gripping elements and object is spaced apart is fixed; And wherein the second pair of gripping elements be subsequently near object, grips object and in said second direction it is stretched.

41. as the one or more described method of claim 36 to 40, this object of the pneumatic engagement of wherein said gripping elements.