TWI670402B - Open-type circular knitting machine for knitwear with take-down group and collecting group of the fabric - Google Patents

Abstract

A circular knitting machine having an "open" type and configured for producing fabrics and collecting them into an open configuration, i.e., in a single layer, for use in knitwear. The machine comprises a roll of cloth and/or a collection set movably received in a collection space and capable of opening and stretching the fabric produced by the machine, and winding it into a single layer and continuously at least one Collect the roller. The integral web and/or collection set is rotatably mounted and suspended from a base frame or a needle carrying device whereby it is suspended vertically in the collection space.

Description

Open circular knitting machine for knitwear with fabric removal and collection set

The present invention relates to a circular knitting machine for a knitwear having a type called "open" and a base frame having a reduced size. In particular, the present invention relates to a base frame for the open circular knitting machine. Further, the present invention relates to an open circular knitting machine provided with a take-down and/or collection set of fabrics produced by the machine. The invention further relates to a roll and/or collection set that is intended to be mounted in an open circular knitting machine. Furthermore, the invention relates to a tensioning roller for a roll and/or collection set of the open circular knitting machine.

The present invention relates to the technical field of a circular knitting machine for use in knitwear, which belongs to a type in the field which is referred to by the term "open type". This type comprises a circular knitting machine provided with at least one needle carrying device, a moving cam device for manipulating the needle, and in particular a roll and collection set capable of collecting the fabric produced by the machine Form a single layer, typically by winding it onto a roller. A single layer of fabric from the needle carrying device and collected by the web and collection set can be obtained by cutting and opening the tubular fabric (in most cases, the machine should be continuously produced) A tubular fabric is produced, or it can be produced directly "openly", i.e., in a single continuous layer of fabric (having a predetermined width). In other words, the roll and collection set collects (by winding it on a roller) a single layer of fabric rather than a cylindrically unrolled tubular fabric: the single layer of fabric has a continuous strip configuration of a particular width And can be obtained by opening a tubular structure by continuous cutting parallel to the longitudinal direction of the production fabric, or from a machine that has been opened to the outside, which results in a machine for identifying the type of machine. "open" language.

Open knit machines can sometimes include the ability to collect only groups, i.e., lack of rolls. This is true, for example, for machines in which the web is directly executed on the needle bed of the needle; in this case, the fabric produced by the needle carrier device falls into the collection group, typically by a winding The fabric is wound onto a roller. In any event, an open machine can be defined as a circular knitting machine in which the fabric produced is "openly" collected, i.e., in a single layer, and wound onto a collecting roller.

The circular knitting machine of the present invention may be of a single needle bed type (having a single needle cylinder) or a double needle bed type (having a needle cylinder and a needle board) in various aspects.

The present invention teaches the patentable scope of an "open" knitting machine, and thus specifically identifies a knitting machine having the features described above for an open machine, the features of which are clearly and singularly identified and defined in the reference field. This type is clearly understandable to the expert lines in the field. In light of the relevant reference art, the terms used in the scope of the patent application should therefore be correctly interpreted. In particular, the features of the machine according to the invention that are open are to be understood as a precise technical feature, which constitutes a limitation and should not be construed as a purely exemplary example of a knitting machine in many existing forms, which is claimed in the patent application. Further technical features are set.

In the field of knitting machines for knitwear, "open" type circular knitting machines are conventional. These machines are provided with a special base frame which constitutes the load-bearing structure of the machine and which supports and houses all the machine components, in particular the knitting head (including the needle-carrying device, the handling device for most knitting needles and knitting needles) and the roll With the collection group. The base frame is further capable of stably positioning the machine at a designated work site.

Open machines typically have a needle carrying device, i.e., a needle cylinder or a needle plate having a diameter of 30-40 turns, but other examples of existence have a smaller diameter, such as 24 inches. With a diameter of more than 40 inches, the knitting machine is oversized, which makes it difficult to implement and transfer.

As indicated above, the open circular knitting machine typically produces a tubular fabric that is opened by a longitudinal cut performed by a cutter and then opened and stretched outwardly to provide a single The layer is wound on a collecting roller. Thus, the lateral dimension of the open fabric collected on the roller and under the cylinder is relative to the "flattened" and uncut tubular product (ie, the fabric that is closed to form a two layer bonded to the side) Double the diameter presented. The opening of the fabric thus results in a considerable increase in machine obstruction under the cylinder, i.e. in the area in which the web and/or collection set is accommodated. This area must have no structure and movement that can interfere with the roll and/or collection group. The structural element is of a size that can be used to collect an open fabric that is stretched outwardly to its overall width. This is the fact that the base frame of the open type knitting machine of the conventional type has a considerable degree of hindrance.

Open circular knitting machines of the prior art each have a three-legged base frame disposed around the roll and/or the collection set and supporting a support ring thereon, the knitting head being mounted with the needle cylinder On the support ring. The three leg systems are typically angularly equidistant, i.e., they are at an angle of 120° to each other. Typically, one of the three arm members constitutes a main leg that is relatively large relative to the other two "lateral" legs and houses the handling device of the machine. This base frame structure imparts a stable support to the overall machine, taking into account the heavy weight of the structure, the large size and the presence of the device in motion. Conventional structures are designed to prevent overturning of the machine and to limit vibration.

The base frame of the three-legged version of the conventional type has a series of defects. First, it is apparent that the circular configuration of the three legs determines a large number of obstacles in the width and length of the machine, i.e., the two mutually perpendicular obstructions of the knitting machine in plan view. Typically, the length of the machine is defined along the axis of the collecting roller of the fabric and passes through the main leg, while the width is defined as the lateral extension of the sides to the maximum of the legs. In general, the obstruction of the machine can outline the rectangle having only the sides of the length and width described above, and is a function of the size and configuration of the three legs; the structure of the conventional base frame has a large size in length and width. .

The heavy weight of the base frame of the conventional machine is a very large problem in the field of open knitting machines, since the maximum size used to implement the machine is limited to allowing the machine to be transported by standard means (and not particularly Delivery) and the need to simply deliver at a moderate cost. In particular, there is a rigid standard for cargo transport systems that does not allow for exceeding a certain size in length and width. These standards are linked to the dimensions of the containers used for cargo transport and to the dimensions of conveyors such as trucks, trains and heavy trucks, particularly the width of these containers and devices (which typically cannot exceed 230-240 cm).

Thus, in a machine of the conventional type having a three-legged base frame, the need not to exceed these limits is translated into the difficulty of realizing the machine to produce a fabric having a width greater than a certain limit, since the width of the collected fabric corresponds to The size of the roll and/or collection set, and even more corresponding to the outer dimensions of the base frame housing the set. This is extremely unfavorable, as the desire is to be able to produce and "openly" collect fabrics with even larger widths.

Conventional machines include further defects in the construction of the three legs of the base frame, including the poor accessibility of the knitting head and the needle carrier. This causes a decrease in the productivity of the machine because the structure makes it difficult for the operator to intervene, such as in the case of a broken wire or a needle. As such, the installation and maintenance of such devices of the machine can be time consuming and difficult due to the presence of such legs of the base frame.

In order to remedy the defects determined by the base frame of the three legs, the Applicant has in the past realized an open circular knitting machine having a three-legged base frame with a non-constant angle therebetween, ie, a non-borrowing 120° configuration . In this solution, each of the two-sided legs forms an angle greater than 120° with the main leg (arranged along the longitudinal axis of the machine), for example 135°, and the angle between the two legs is less than 120°, for example 90°. In other words, it seems as if the two sides of the legs have been rotated backwards, reducing the angle contained between them. Such as As a result, it is possible to reduce the width of the machine by a limited amount while increasing the length. This is beneficial because the increase in length does not pose a problem by itself, since the transport dimensions are primarily limited in width and they are quite adequate in length.

A further conventional solution, which attempts to remedy the problem of three leg obstructions, is described in patent EP1253230. This patent exemplifies a three-legged base frame having a fixed main leg (configured along the longitudinal axis of the machine) and two symmetrical sides between the transport configuration and a job configuration relative to the longitudinal axis To the legs. The lateral legs may vary in their radial extent (relative to the central axis of the machine) to facilitate proximity to the central support ring (which therefore has a smaller width dimension) in the delivery configuration and its distance from the operational configuration farther. For each lateral leg, the change in radial extent is obtained by a pair of horizontal rods (or "extensions") that will be used for each leg when the lateral legs are in the operational configuration The upper and lower ends are connected to the support legs and at the base of the base frame, and when the legs are in the transport configuration, they are removed by mounting the lateral legs directly to the base of the support ring and the base frame . It should be noted that in the operational configuration, the radial distance of the lateral leg of the central support ring obtained by the extensions imparts a free space to be provided beneath the cylinder, which imparts to the roll and collects The group's accommodation and function; in this way, the machine works correctly. Conversely, the transport configuration can only be used for this project: the lateral walls are in fact mounted close to the cylinder (to reduce the obstruction in width and facilitate transport) and occupy the distribution and collection The space in which the device rotates.

However, the applicant found that even for the modified version of the open type The base frame of the knitting machine, having legs arranged at a non-constant angle or having a detachable leg as described in patent No. EP1253230, still cannot completely overcome such defects and can still be modified in various ways. In particular, conventional solutions can only partially limit the obstruction in the width of the open knitting machine; this indicates that the associated conveying problem continues. Further, the problem of poorly engraftable connection with the knitting head and the needle-carrying device is important for rapid intervention on the machine, and is only moderated and unresolved.

Further, such solutions provide a base frame, particularly as described in the patent EP 1 253 030, having a structure that is difficult to implement and/or requires complex operations to organize the machine for its transport and action.

The open circular knitting machine typically comprises a device, known in the art as a roll and collection set, which collects the fabric produced by the knitting machine into a single layer on a collecting layer. The roll and collection set can be further used to "stretch" the fabric from the needle carrier to ensure that it decreases as the fabric is produced at the needle position; in some machines, the fabric roll will be directly adjacent The needle carrier device takes place and the set is only used to collect the fabric (which has been tensioned).

In an open machine for producing a tubular fabric (i.e., a fabric that is not directly "opened out"), the web and/or collection set includes cutting means capable of longitudinally cutting the production of the needle-carrying device The tubular fabric is such that the tubular fabric is "open" and thus can be wound into a single layer on the collecting roller.

The roll and collection set may comprise further means, such as a flattening device for a tubular fabric, an opening means for cutting the subsequently opened fabric, and for controlling the advancement of the fabric on its path toward the collecting roller. Roller and synchronizer for movement of the actuator and various components.

The roll and collection set is typically mounted to the machine below the needle carrying device (in a collection space specifically assigned to the set) and is capable of being securely rotated with the needle carrier to facilitate the production of the fabric And collecting the fabric into a roll or an overlapping folded layer.

Examples of rolls and collections for open knitting machines are exemplified in the patent documents EP 0 456 576, EP 0 696 658 and WO 00/50678. In particular, the webs and collection sets have a frame that supports all of the components of the set and is disposed in the machine below the knit head. The integral frame is rigidly rotated with the needle carrying device and further disposed on the lower base of the machine by a support device (including, for example, a bearing) that carries weight while imparting rotation; the support device in the lower member can be Startup (for example by a motor) is used to determine the rotation of the overall frame.

Applicants have found that conventional types of open knitting machines, particularly those of these machines, have drawbacks and can be modified in a variety of ways. First, the conventional roll set has a large size of weight and obstruction. Further, its insertion into the machine requires complex and expensive connections and moving devices, particularly because of the overall load supporting the roll and collection set during rotation, and the need to move synchronously relative to the needle carrier.

These problems increase when it is considered that an open knitting machine typically has a large diameter needle-carrying device, which requires an equally large number of complex rolls and collection sets.

Conventional types of rolls and collections typically have at least one stretcher roller or tensioning roller inside, which intercepts the weave upstream of the collecting roller The material is configured to progressively open in its width direction whereby the fabric reaches the collection roller in its most open and stretched configuration over its entire width. Examples of stretcher rollers having this object are exemplified in the patent documents EP 0534917 and WO 00/50678: the rollers have two groove portions which extend helically from the center towards the ends of the roller in opposite directions.

However, Applicants have found that conventional stretcher rollers have certain limitations and drawbacks.

Further, conventional types of stretcher rollers are unable to effectively form a complete pull of the fabric before it reaches the collection roller; this results in accumulation of folds, wrinkles, and/or unwanted overlaps on the collection rollers of the fabric. It can damage the fabric and its associated quality, complicate the subsequent completion or packaging operations performed on the fabric, or may require further adjustment of the fabric on the collecting roller.

Further, the conventional type of stretcher roller cannot modify the body and size of the stretch performed on the fabric; different grades of stretch cannot be set toward the end of the roller, and the fabric passes through the stretcher roller On different parts.

Moreover, these conventional types of stretcher rollers are characterized by a complex structure and high manufacturing and maintenance costs.

Further, since conventional stretcher rollers have limited efficiency in lateral stretching of the fabric, they have an effect on the overall roll and the performance of the collection set; this typically requires the use of a plurality of stretcher rollers, or Large size stretcher rollers have the effect of increasing complexity and/or size and/or achieving the cost of the roll and collection set.

Conventional stretcher roller performance limitations result in reduced overall size and efficiency of the outer edge of the collection set stretch fabric, while tending to collapse or roll up on them in the longitudinal direction, forming a cigarette-like roll on each side. .

Applicants have also discovered that in conventional rolls and collections, the various components that cooperate with the fabric are from the needle-carrying device to the collecting roller, ie, the opening device, the tensioner roller, the tensioning roller, and the traction roller. Arranged in a non-optimal manner to create a roll that is misaligned and/or wrinkled in the fabric, particularly on the lateral edges of the fabric, and determines a non-uniform winding on the collecting roller.

In this case, various aspects and/or embodiments that support the present invention are directed to providing an open circular knitting machine for a knitwear, a roll for the open circular knitting machine, and And/or a collection set, and a stretcher roller for the roll and/or collection set of the open circular knitting machine, which is capable of eliminating one or more of the above mentioned drawbacks.

A further object of the present invention is to provide an open circular knitting machine characterized by a smaller base frame, in particular a smaller width, than conventional solutions.

It is a further object of the present invention to provide an open circular knitting machine that can be easily transported.

It is a further object of the present invention to provide an open circular knitting machine that is capable of achieving and collecting open fabrics having a wide width, particularly greater than the maximum width achievable with conventional machines, while retaining delivery using standard types of conveyors. possibility.

It is a further object of the present invention to provide an open circular needle A loom is characterized by a high degree of advancing property of the knitting head and the knitting needle cylinder.

It is a further object of the present invention to provide an open circular knitting machine characterized by greater productivity relative to conventional machines.

A further object of the present invention is to provide an open circular knitting machine for knitwear characterized by a simple and rational structure.

A further object of the present invention is to provide an open circular knitting machine characterized by high convenience in manufacturing and/or installation and/or setting and/or maintenance.

It is a further object of the present invention to provide an open circular knitting machine that is provided with a roll of cloth and/or collection set and is characterized by a simple and rational structure.

It is a further object of the present invention to provide an open circular knitting machine for use in knitwear wherein the web and/or collection set is efficiently supported and set to rotate.

It is a further object of the present invention to provide an open circular knitting machine for knitwear in which the web and/or collection set is rotatably mounted in the machine in an innovative manner.

It is a further object of the present invention to provide a roll and/or collection set for an open circular knitting machine that avoids the formation of misalignment and/or wrinkles in the collected fabric, and in particular to avoid curling The lateral edges of the fabric.

It is a further object of the present invention to provide a roll and/or collection set for an open circular knitting machine that enables uneven and flat winding of the fabric onto the collecting roller.

It is a further object of the present invention to provide a tensioning roller for a roll and/or collection set of an open circular knitting machine that effectively opens and stretches the fabric.

It is a further object of the present invention to provide a stretcher roller for a roll and/or collection set of an open circular knitting machine that reduces the space required within the roll and/or collection set for use in An effective fabric stretching is performed before it is wound onto the collecting roller.

It is a further object of the present invention to provide a stretcher roller for a roll and/or collection of open circular knitting machines that is versatile and adaptable to a variety of fabric requirements and to different types and sizes of fabric.

It is a further object of the present invention to provide a tensioning roller for a roll and/or collection set of an open circular knitting machine that is simple and/or economical to manufacture.

These and other objects, which will be more fully apparent in the accompanying description process, are for use in knitwear by one or more of the claims in the accompanying patent application. Open circular knitting machine, a roll and/or collection set for an open circular knitting machine, and a stretcher roller for a roll and/or collection of an open circular knitting machine Essentially, each of the claims is individually (without a relative dependency) or combined with other claims, and in accordance with various combinations, including the accompanying aspects and/or embodiments of the scope of the above-identified patent application. .

In a first aspect, the present invention relates to an open circular knitting machine which is constructed to fabricate fabrics and to openly collect the weaves. The fabric, that is, the fabric is collected into a single layer.

In one aspect, the knitting machine includes a base frame that forms the load bearing structure of the machine.

In one aspect, the knitting machine comprises a knitting head mounted on the base frame and provided with at least one needle carrying device in the form of a needle cylinder or a needle plate, and a plurality of movably mounted The at least one needle carries the needle of the device and is provided with manipulation means for selectively activating the plurality of needles to impart fabric production.

In one aspect, the base frame includes: a support upper ring or member on which the knitting head is mounted such that the needle carrying device is rotatable about a substantially vertical central axis; a lower base or a cross substrate, Designated to be at least partially disposed on the ground; two and only two support legs are spaced apart from each other at two different and lateral positions, interposed and connected between the upper ring and the lower base such that the upper ring Vertically overlapping and spaced apart from the lower substrate, and such that a collection space therebetween is vertically defined, without the elements of the base frame and designated to movably receive the fabric produced by the knitting machine A roll and/or collection set corresponding to two other side configurations of the upper ring and the lower substrate or the intersecting substrate, thereby laterally defining the collection space.

In the face of the needle carrying device, preferably a needle carrying cylinder, having a large diameter of 24 inches and/or greater than 26 inches and/or greater than 30 inches and/or greater than 36 inches and/or greater than 40 inches. .

In its further independent orientation, the present invention relates to a An open circular knitting machine for knitwear, and configured to produce fabrics and to openly collect the fabric, i.e., in a single layer, the machine comprising: a base frame that constitutes the load-bearing structure of the machine and Including a support upper ring or member, a lower base or a cross base, and at least two support legs interposed between the upper ring and the lower base at a position that is at least two different and laterally spaced apart The upper ring system vertically overlaps and is spaced apart from the lower substrate such that a collection space therebetween is vertically defined, without the elements of the base frame and is designated to movably receive the fabric produced by the knitting machine a roll of cloth and/or collection set; a knit head mountable to the upper ring and provided with at least one rotating needle carrying device in the form of a needle cylinder or a needle plate having a plurality of movable a knitting needle mounted on at least one needle-carrying device, and having a manipulation device for selectively activating the plurality of needles to impart production to the fabric; a roll of cloth and/or a collection group that is movable In the collection space and configured and pre-set to at least open and stretch, or even possibly tensioned by the needle-carrying device, the fabric produced by the machine is wound into a single layer and continuously On at least one collection roller.

In an orientation, preferably according to the previous face, the integral roll and/or collection set is rotatably mounted and suspended from the base frame or the needle carrier, thereby vertically suspended in the collection space .

In one aspect, the needle carrying device is a needle carrying cylinder or a needle carrier.

In one aspect, the knitting machine has a single needle bed type comprising a single needle carrier or a double needle bed type comprising two weaves The needle carrying device is a needle cylinder and a needle plate.

In a further independent aspect, the invention relates to a stretcher roller or tensioning roller, a roll and/or collection set for a circular knitting machine for open knitwear, which is organized for production The fabric is collected in an open configuration, i.e., in a single layer, the stretcher rollers are designated to be mounted to the frame of the roll and/or collection set in an intermediate position, one of the knitting machines A needle carrying device is interposed between the collection roller for one of the fabrics and is configured with one of its longitudinal axes that is substantially parallel to the axis of rotation of the collection roller.

In one orientation, the stretcher rollers are configured to interact with the fabric advancing toward the collection roller such that the fabric passes over, is in contact with, and is in contact with at least a portion of the stretcher roller The stretcher rollers are configured to stretch the fabric toward the opposite lateral ends of the stretcher roller.

In one aspect, the stretcher roller includes a rod mountable to the frame and having a respective longitudinal axis, and a plurality of sectors rotatably mounted to the rod for rotation on the rod, each The bearing bush is independent of the other bearing bushes and rotates around one other axis.

In one orientation, each bearing shell is deployed in a different unfolding plane that is inclined transversely rather than perpendicularly relative to the longitudinal axis of the rod of the tensioner roller.

In one orientation, the individual axes of rotation of the bearing pads are perpendicular to the individual deployment planes.

In a further independent aspect, the present invention relates to a roll and/or collection set for an open circular knitting machine, which is configured for use in forming Fabricating and unwinding the fabric, i.e., in a single layer, the web and/or collection set being movably received in one of the collection spaces of the knitting machine and configured and pre-configured to be at least open And stretching, possibly drawing the fabric produced by the needle-carrying device of the knitting machine from the needle-carrying device, and winding the fabric into a single layer and continuously on at least one collecting roller.

In one aspect, the roll and/or collection set includes a support frame mountable to the base of the knitting machine and configured to rotate securely with the needle carrying device.

In a further aspect, the roll and/or collection set comprises means for opening the fabric, the fabric being directly obtained by the needle carrier device in a single layer or by cutting the needle carrier device Obtained from the tubular fabric, the outward opening device comprises at least one outwardly opening crossbar, which is preferably fixedly mounted to the frame and structure to open the sides of the fabric to the outside at a distance, the fabric being The fabric descends into the collection space and opens onto the outwardly opening crossbar toward a collecting roller, and extends in a width across the outwardly opening crossbar as a single layer of fabric.

In one aspect, the roll and/or collection set includes at least one collection roller rotatably mounted to the frame and designated to receive fabric from the outward opening device and collect the fabric thereon in a single layer and continuously The collecting roller is rotatable about a different axis of rotation.

In one aspect, the roll and/or collection set includes at least one return roller operatively interposed between the outward opening device of the open fabric and the collection roller along a path of advancement of the fabric, Returning roller is configured to receive the fabric from the opening device and to fabricate the fabric A single layer is sent toward the collection roller, which is rotatable about a different axis of rotation.

In one aspect, the roll and/or collection set includes at least one stretcher roller or tensioning roller mounted to the frame in an operable intermediate position between the outward opening device and the collecting roller. And configured with a longitudinal axis that is substantially parallel to the rotation of the collection roller, the tensioner roller is configured to interact with the fabric advancing toward the collection roller to flatten the fabric toward the stretcher roller The fabric is widened at the opposite ends.

In a face, the return roller has a different rotating shaft disposed on a first vertical plane, and the collecting roller has one of the plurality of rotating shafts disposed on a second vertical plane, and the tensioning roller has a longitudinal direction thereof The shaft is placed on a third vertical plane.

In a face, the at least one tight roller is positioned in the roll and/or collection set such that a distance between the third plane and the first plane is at least equal to the second plane and the first plane The distance between the second and third planes is in the same half space defined by the first plane.

Each of the above-described aspects of the present invention may be viewed individually or in combination with any of the scope of the patent application or other such aspects.

1‧‧‧Knitting machine

2‧‧‧Base frame

3‧‧‧Sheung Wan

4‧‧‧ Lower base or cross base

4a‧‧‧First installation section

4b‧‧‧Second installation section

4c‧‧‧ central part

5,6‧‧‧ legs

5a, 6a‧‧‧ lower end

5b, 6b‧‧‧ upper end

7a, 7b‧‧‧ lateral part

8‧‧‧ holding ring

8a‧‧‧External ring

8b‧‧‧Internal ring

11,12‧‧‧ erect parts

13,14‧‧‧Intersection

15,16,17,18‧‧ hood

19a, 19b‧‧‧ stiffeners

30‧‧‧Roll and/or collection group

31‧‧‧Collection wheel

33‧‧‧Support frame

34‧‧‧ beams

35,36‧‧‧ lateral support plate

40‧‧‧Installation device

41‧‧‧ mounting bracket

42‧‧‧Transfer device

45‧‧‧Fixed devices

46‧‧‧ screws

50‧‧‧Opening device

51‧‧‧Opening pole

52,53‧‧‧

54‧‧‧ central part

55, 56‧‧‧ Straight line

57‧‧‧ Guide ring

60‧‧‧ Stretcher Roller

61,62‧‧‧ lateral end

63‧‧‧ pole

64‧‧‧ central part

65‧‧‧ bearing bush

66‧‧‧Expand plane

66a‧‧‧Rotary axis

68‧‧‧First set of bearing pads

69‧‧‧Second set of bearing pads

70‧‧‧Relay wheel

71‧‧‧First vertical plane

72‧‧‧ second vertical plane

73‧‧‧ third vertical plane

80‧‧‧Rolling fabric device

81,82‧‧‧ traction roller

90‧‧‧ Pulling device

91,92,93‧‧‧ Pull the wheel

95‧‧‧flattening device

96‧‧‧ pole

A‧‧‧ center axis

C‧‧‧contact line

H‧‧‧Knitting head

L‧‧‧ vertical axis

O‧‧‧needle bearing device

P‧‧‧ longitudinal plane

S‧‧‧ collection space

T‧‧‧ fabric

Α‧‧‧first tilt angle

The features and advantages of the present invention will be more fully apparent from the detailed description of the accompanying claims. Circular knitting machine for knitwear, a roll and/or collection set for an open circular knitting machine according to one of the invention, and an open circle according to one of the inventions A roll of a knitting machine and/or a tensioner roller for a collection set. The description will be made by way of non-limiting example with reference to the accompanying drawings, in which: FIG. 1 is a possible embodiment of a circular knitting machine for an open knitwear according to the present invention. Figure 2 is a top view of the machine of Figure 1; Figure 3 is a side view of the machine of Figure 1; Figure 4 is an exploded view of the machine of Figure 1; Figure 5 is a closed machine with a closed cover A perspective view of the machine completed in the configuration; Figure 6 illustrates a further perspective view of the machine of Figure 5, wherein the covers mounted on one side of the machine are shown as an open configuration; Figure 7 illustrates an open view in accordance with the present invention A perspective view of one of the possible embodiments of a roll and/or collection set of a circular knitting machine comprising, for example, a fabric produced by the knitting and collecting of the set; Figure 8 is a top view of the set of Figure 7 from above; Figure 9 Figure 10 is a front view of the group of Figure 7; Figure 11 is a side view of the group of Figure 7; Figure 11 is a view of the group of Figure 7 taken along plane XI-XI and with a cross-section of some components removed; Figure 12 Figure 11 is an exploded perspective view of the group of Figure 7; Figure 13 is for an open circular knitting machine in accordance with the present invention A schematic side view of the embodiment of the cloth and / or collecting group one possible embodiment; FIG. 14 for an open system of the circular knitting machine cloth according to the invention and / or A schematic view of one of the collection groups for further example side view; FIG. 15 is a perspective view of one possible embodiment of a stretcher roller for a roll and/or collection set of an open knitting machine in accordance with the present invention; Figure 15 is a front view of a portion of the tensioning roller; Figure 16 is a perspective view of a further possible embodiment of the open circular knitting machine of the present invention having a roll and/or collection set; Figure 17 is a view 16 is a perspective view from below; FIG. 18 is a perspective view of a portion of the circular knitting machine of FIG. 16; FIG. 19 is a further possible embodiment of an open circular knitting machine according to the present invention. Figure 20 is a further perspective view of the open circular knitting machine of Figure 19; Figure 21 is a perspective view of the circular knitting machine of Figure 19; The detail is from above and a larger scale perspective.

Referring to the drawings, reference numeral 1 generally designates a circular knitting machine for an open type knitwear according to the present invention, and reference numeral 30 denotes a roll for the open knitting machine according to the present invention. And/or collection set; reference numeral 60 represents a stretcher roller for a roll and/or collection set of an open knitting machine in accordance with the present invention. In general, the same reference numbers are used for the same or similar elements, possibly in various embodiments thereof.

A first embodiment of a knitting machine according to the present invention is shown in Figures 1-6. in. The circular knitting machine 1 comprises a base frame 2 constituting a load-bearing structure of the machine, and a knitting head mounted on the base frame and provided with at least one knitting needle carrying device O, and a plurality of movable mountings thereon A needle of a needle-carrying device, and a manipulation device capable of selectively activating the plurality of needles to impart a production of the fabric T. The needle carrier device O can be a needle cylinder (shown schematically in Figures 16-21) or a needle plate. The needles of the needle carrier device do not show details and are well known in the art and in the art of reference.

The base frame 2 comprises a ring or upper support element 3 on which the knitting head is mounted such that the needle carrier O can be rotated about a substantially vertical central axis A and comprises a lower base or intersecting base 4, designated as at least part Placed on the ground. The base frame further comprises two and only two support legs 5 and 6.

The two support legs 5 and 6 are interposed between the upper ring 3 and the lower base 4, and are interposed and connected at two different and laterally spaced positions such that the upper ring system vertically overlaps the lower base. a roll of cloth and/or collection thereon and spaced apart therefrom, such that a collection space S therebetween is vertically defined without elements of the base frame and designated to movably receive the fabric produced by the knitting machine Group 30.

The two legs are located on the other side of the upper ring and the lower base or the intersecting base, thereby laterally defining the collection space S. The upper support element 3 is preferably annular, but may take on a different shape as long as the shape is suitable for supporting the knit target and laterally supported by the base leg.

Knitting machine 1 is preferably configured to collect fabric from a single collection device by means of a roll that is movably mounted to the base frame and/or collected Group, the following will be more fully explained. The upper support ring 3 is preferably coaxial with the central axis A. The two legs 5 and 6 preferably have a substantially vertical deployment and are configured to stably support the upper ring to avoid tipping of the machine in any operational configuration. The two leg systems are preferably aligned along the longitudinal plane P and the central axis A of the needle carrying device is parallel and preferably disposed on the longitudinal plane P. The longitudinal plane P is preferably substantially vertical. The two legs 5 and 6 are preferably aligned along the longitudinal plane P to form two equal 180[deg.] angles therebetween between them (see in particular Figure 2). The knitting machine preferably has an overall length defined as a barrier along the longitudinal plane (P), the exterior being defined by the two legs 5, 6 and having an overall width defined as Obstruction of the machine in which the longitudinal plane P is in the vertical direction: the overall length and width define the maximum obstruction of the knitting machine.

The first leg 5 of the two legs preferably extends perpendicularly between the lower end 5a and the other upper end 5b. The lower end 5a is connected and mounted to the first mounting portion 4a of the cross base 4, and the upper end 5b is connected and Installed on the upper ring 3. The second leg 6 of the two legs preferably extends perpendicularly between a lower end 6a and an upper end 6b, and the lower end 6a is connected and mounted to the second mounting portion 4b of the intersecting base and is mounted with the first The portion 4a is opposite, and the upper end 6b is connected to and mounted to the upper ring at a relative position with respect to the first leg. The first leg 5 and the second leg 6 are preferably substantially identical and have a particular height between their lower and upper ends. The lower leg ends 5a and 6a of the two legs are preferably perpendicular to the intersecting base 4. The cross substrate preferably includes a central portion 4c extending between the first mounting portion 4a and the second mounting portion 4b and centered on the central axis A of the needle carrying device O.

The cross-substrate 4 preferably further comprises one or desired lateral portions 7a, 7b that are firmly constrained and coplanar with the central portion 4c and with respect to the longitudinal plane P of the knitting machine from two opposite halves of the central portion The opposite sides of the plane extend.

The needle carrier device O preferably has a diameter greater than 24 inches and/or greater than 26 inches and/or greater than 30 inches and/or greater than 36 inches and/or greater than 40 inches.

The base frame 2 preferably has a unitary closed polygonal structure which is unfolded on the longitudinal plane P. The polygon preferably has a rectangular shape with four sides, one of which has an upper side formed by the upper ring 3 and a lower side The cross base 4 is constructed, and the two sides are composed of two support legs 5 and 6.

The base frame 2 preferably has an inlet structure defined by the support ring 3 in the upper portion, defined by the intersecting base 4 in the lower portion, and defined by the two support legs 5 and 6 in the lateral direction, thereby defining An open channel defined transversely and vertically to the longitudinal plane P and defined by the two support legs 5 and 6 along the longitudinal plane, the channel receiving the roll and/or collection set 30.

The overall width of the base frame of the knitting machine described above is less than 230 cm.

The two legs 5 and 6 preferably have a width perpendicular to the longitudinal plane L which is less than 100 cm and/or less than 75 cm and/or less than 50 cm and/or less than 25 cm. The two legs preferably have a width perpendicular to the longitudinal plane that is greater than 10 cm and/or greater than 15 cm and/or greater than 20 cm. The two legs preferably extend laterally symmetrically in the two half planes defined by the longitudinal plane P. The cross substrate 4 preferably has a lateral extension that is at least equal to one or both of the half planes identified by the longitudinal plane P Wait for the width of the two legs. Where the lateral extension is equal to the width of the legs, the intersecting base has only the central portion 4c and lacks the lateral portions 7a and 7b. The cross-substrate 4 preferably has one or both of the two half-planes defined by the lateral extension in the longitudinal plane P, which is substantially equal to the lateral extension of the needle-carrying device O, ie equal to The needle carries the diameter of the device. In this case, the individual plan views of the needle carrying device O and the cross substrate 4 are substantially the same.

The cross-substrate 4 preferably has one or both of the two half-planes defined by the lateral extension in the longitudinal plane P, which is substantially equal to the lateral extension of the upper ring. In this case, the individual obstructions in the plan view of the upper ring 3 and the intersecting substrate are substantially identical.

The cross-substrate 4 preferably extends laterally beyond the lateral width of the two legs, at least 10 cm and/or 20 cm and/or 40 cm and/or on one or both of the two half planes identified by the longitudinal plane P. Or 60cm and / or 80cm and / or 100cm. The cross-substrate 4 preferably has an individual overall width that is perpendicular to the longitudinal plane P, greater than 50 cm and/or greater than 100 cm and/or greater than 150 cm and/or greater than 200 cm.

The lateral obstruction of the cross-substrate 4 is preferably symmetrical with respect to the longitudinal plane P.

The individual widths of the intersecting substrates 4 are preferably defined as an overall lateral obstruction of the laterally directed portions 7a and 7b of the intersecting substrate. The needle carrying device is preferably mounted coaxially on the upper ring 3, the ring having a central opening through which the fabric T produced by the machine progressively descends into the collection space S. Each of the two legs 5 and 6 preferably includes a vertical Expanding the upright members 11, 12, having the lower edges of the legs 5a and 6a, and a horizontally extending cross member 13, 14 terminating at the upper ends of the legs 5b and 6b; the cross members 13 and 14 are opposite to the upper ring At an opposite end, it is firmly bonded to the top of the individual uprights such that the legs assume an angular configuration, i.e., an L-shape.

Each of the two cross members 13 and 14 is preferably capable of laterally spacing the upright members 11 or 12 of the individual legs relative to the upper ring 3 for increasing the extension of the collection space S in the direction of the longitudinal plane P. The two cross members are positioned above the collection space S and the two vertical members are positioned on the side of the collection space S. The upper ring 3 is preferably mounted to the two legs 5 and 6, and more preferably mounted on the intersection of the two legs (see the drawing).

Figure 4 is an exploded view of one of the possible embodiments of the substrate frame 2, in which various components of its composition are visible. For each of the illustrated two legs 5 and 6, the individual uprights 11, 12 and the individual cross members 13, 14 are achieved by cutting and bending a metal sheet. Each leg is obtained by combining individual cross members on individual uprights to form a single unit. Each leg couples its components during the steps implemented by the base frame, and the connection between the uprights and the cross members is a non-removable version. Further, each leg, once combined and fixed to the upper ring and the lower cross-substrate, is maintained at a single configuration within the base frame during transport and during operation of the machine.

The two legs 5 and 6 preferably have a cross-section that is polygonal in shape and preferably rectangular in the horizontal plane.

The base frame 2 preferably includes an additional sealing ring 8 relative to The upper ring is mounted on the upper ends of the two legs 5 and 6 at a lower position and preferably coaxial with the upper ring.

The additional ring 8 preferably has a central opening through which the fabric T produced by the machine and from the needle carrying device O passes and progressively descends into the collection space S. The additional ring 8 is preferably mounted under the two cross members 13 and 14 of the two legs 5 and 6. The base frame 2 preferably includes one or more reinforcing plates 19a and 19b, preferably having an angular configuration, each of which is inserted and connected between the lower end of the other leg and the individual mounting portion of the intersecting base for reinforcement and stabilization. The base frame. The needle carrying device is preferably a needle cylinder or a needle plate. Preferably, the base frame 2, and even more preferably the integral knitting machine 1, is substantially symmetrical with respect to the longitudinal plane P. The dimensions and configuration of the two legs 5 and 6 and the intersecting base 4 are preferably such as to determine the maximum impediment of one of the knitting machines by using standard sized conveying means, such as containers or heavy trucks, when the base frame is assembled Give delivery.

As shown in the examples of Figures 5 and 6, the base frame preferably includes at least one closure of the collection space S movably mounted to at least one of the two legs and configured for relative to the longitudinal direction. The plane P laterally closes the collection space.

The cover is preferably positioned laterally beyond the lateral extension of the intersecting substrate on the side of the collection space.

The at least one cover is preferably movably mounted to the base frame between at least a closed configuration (Fig. 5) and an open configuration (Fig. 6), wherein the closed configuration prevents the collection space The advancement, and the open configuration thereof, allows access to the collection space laterally with respect to the longitudinal plane P. to In one face, the at least one cover is rotatably mounted to at least one of the two legs 5 and 6 for rotation between the closed configuration and the open configuration. The knitting machine may comprise two covers, preferably identical to each other, arranged on opposite sides of the base frame with respect to the longitudinal plane P and configured to close the collection in the two half-planes defined by the longitudinal plane P Space, each of the two covers is disposed outside of the intersecting substrate. As shown in the examples of Figures 5 and 6, the knitting machine 1 advantageously comprises two pairs of covers 15 and 16, 17 and 18, preferably identical to each other. Each pair of hoods are disposed on respective sides of the base frame 2 with respect to the longitudinal plane P and are configured to enclose the collection space in one of the half planes defined by the longitudinal plane P. Each of the two pairs of covers is disposed outside of the intersecting substrate. Each of the two pairs of covers includes a first cover (15 or 17) rotatably mounted to at least one of the legs of the base frame and configured to be substantially opposite the longitudinal plane Closing half of the collection space in the individual half-plane, and a second cover (16 or 18) rotatably mounted to the other leg of the base frame and configured to close the first cover The other half of the collection space installed in it. In each of the two pairs of covers, the first and second covers are rotatably mounted to the two legs of the base frame for opening in opposite directions, and are provided from individual sides of the base frame The access to the collection space is closed and used to contact each other.

The covers impart a safety effect to the knitting machine: in fact, the roll and/or collection set operates by rotating in the collection space, and thus it is necessary to make the collection space inaccessible during the action of the machine, In order to avoid accidental contact when moving the device. On the contrary, the covers must also allow for the receipt. The interior of the collection space is used for the organization and maintenance of the machine and for the loading/unloading of the collection rollers for the fabric; this is why the covers can be individually or selectively, manually or automatically open.

The cross-substrate 4 shown in the example in the figure has a polygonal shape (in plan view) and is assembled (by screws, welding or other fastening means) of a set of rods or longitudinal members and plates. achieve. The intersecting substrate can include one or more seating feet (preferably height adjustable) for proper positioning of the base frame on the floor.

Knitting machine 1 typically includes control means, which are of a conventional type and have not been described in detail in the details, and are organized to manage the function of the overall machine. The control device is preferably associated with one of the two legs (e.g., housed within one or both of the two legs).

The following is a description of an embodiment of a further knitting machine according to the invention, with particular reference to Figures 7-12 and 16-21.

An open circular knitting machine 1 for knitwear comprises a base frame 2 of the above type, i.e. having an upper support element or ring 3, a lower base or cross base 4, at least two support legs 5 and 6 and a missing A collection space S of the elements of the base frame (defined to be vertically between the upper ring and the intersecting substrate and horizontally between the legs). The collection space movably houses a roll of cloth and/or collection set 30 of the fabric T produced by the knitting machine. The knitting machine 1 comprises a knitting head H mounted on the upper support ring and provided with at least one rotating needle carrying device O, in the form of a needle cylinder or a needle plate, having a plurality of movably mounted thereon a knitting needle for a needle-carrying device, and a control device capable of selectively activating the plurality of knitting needles and imparting fabric production Conventional types, such as steering cams, are not illustrated).

The knitting machine 1 further comprises a roll of cloth and/or collection set 30 movably received in the collection space S and configured to at least open and stretch, or even possibly by the needle carrier device O. The fabric is produced and wound into a single layer and continuously on at least one collection roller 31.

In this particular aspect of the invention, the integral web and/or collection set 30 is rotatably mounted and suspended from the base frame 2 or the needle carrier device O, thereby vertically suspended within the collection space S (eg, Figure 16-21).

Note that this aspect of the invention relates to a knitting machine having an arbitrary base frame having two, three or more legs (for example, a base frame belonging to the prior art); from this point of view, the drawing only An exemplary manner shows that the roll and/or collection set 20 is suspended in a machine having a two-legged base frame.

The knitting head H is mounted on the support upper ring 3, whereby the needle carrying device O is rotatable about a substantially vertical central axis A. The web and/or collection set 30 is suspended from the base frame or needle carrier to rotate with the needle carrier O in a stable or angular coordinate manner.

In this embodiment, the needle carrying device, preferably a needle cylinder, preferably has a diameter of more than 24 inches and/or greater than 26 inches and/or greater than 30 inches and/or greater than 36 inches. / or a diameter greater than 40 。.

The roll and/or collection set 30 lacks support means for attaching the set to the underside and/or side of the base frame; in particular, it lacks the attachment of the roll and/or collection set to the underside of the base frame Substrate or cross substrate And/or supporting devices of the legs of the base frame.

As shown in Figures 7-12, for example, the roll and/or collection set 30 preferably includes a support frame 33 that houses the collection means of the fabric produced by the machine and the possible rolls of fabric produced by the machine. Apparatus: The support frame 33 includes a mounting device 40 mountable to the base frame 2 or the needle carrier device O and an overall load that is structurally and dimensionally supportable to support the roll and/or collection set.

The term "load" includes the weight of the roll and/or collection set 30 and the weight of the fabric T collected on at least one collection roller 31, and is also determined by the rotation of the roll and/or collection set and transmitted to the The base frame or the needle carries the stress of the device.

The mounting device 40 is preferably uniquely disposed in an upper portion of the frame 33 and is not present under the frame and/or laterally.

The roll and/or collection set 30 is all suspended from the base frame and has an overall weight, as defined above, supported by the base frame in the interior, or the roll and/or collection set 30 are all suspended from the needle. The carrier device and the overall weight are all supported by the needle carrier device.

As shown in the example of Figures 16-18, the mounting device 40 preferably includes at least one mounting bracket 41 that directly connects the frame of the roll and/or collection set 33 to the needle carrier device O for the roll And/or the collection set and the needle carrier device are secured; the mounting bracket supports the overall weight of the roll and/or collection set and simultaneously acts as a movement to the needle carrier device of the roll and/or collection set Transfer means whereby the rotation of the needle carrier and the roll and/or collection set occurs synchronously and coaxially, i.e., the needle around the central axis The angular rotation determined by one of the carrier devices corresponds to the same angular rotation of the roll and/or collection set about the axis.

The at least one mounting bracket 41 is preferably secured to a single continuous bearing pad of the needle carrier device O, the bearing pad having a inclusion between 10° and 180° and/or between 20° and 150° and / or comprised between 30 ° and 120 ° and / or comprised between 45 ° and 90 ° angular extension with respect to the central axis A.

In a further embodiment (not shown), the mounting device includes a pair of mounting brackets that connect the frame of the roll and/or collection set directly to the needle carrier in two distinct and separate positions Preferably, the needle carrying device is diametrically opposed to each other.

In a further embodiment, independent of the previous embodiment and as illustrated in the examples of Figures 19-21, the base frame 2 includes a guide retaining ring 8 mounted relative to the upper ring 3 and coaxially mounted thereto In the lower position, the guide retaining ring 8 has a central opening through which the fabric T produced by the machine and from the needle carrying device O is progressively lowered into the collecting space S. The guide retaining ring 8 includes an outer ring 8a that is fixedly and securely constrained to the base frame, and an inner ring 8b that is coaxially and rotatably mounted to the outer ring. The outer ring 8a and the inner ring 8b of the guiding retaining ring 8 preferably together implement a fifth wheel or bearing, which is preferably of the swivel type.

The mounting device 40 preferably includes a securing means 45 that directly connects the frame 33 of the roll and/or collection set 30 to the inner ring 8b of the retaining ring 8, thereby securing the roll and/or collection set 30 and the inner ring . In this case, the securing means 45 at least partially supports the load of the web and/or collection set.

Referring to the embodiment shown in the example of Figures 19-21, the mounting device 40 preferably includes a separate drive transport device 42 that connects the needle carrier device O to the frame 33 of the roll and/or collection set, whereby the needle carrier device, the roll and/or collection set, and the The rotation of the inner ring occurs synchronously and coaxially, i.e., the angular rotation determined by one of the needle carrier devices about the central axis A corresponds to the same of the roll and/or collection set 30 and the inner ring about the axis. Angle rotation.

The securing means 45 are preferably configured to support the overall load of the web and/or collection set 30, and the transport means 42 are configured to transport the rotation of the needle carrying device to the web and/or collection. The group and the inner ring are not supported by the load. In the latter case, as shown in the examples of Figures 19 and 20, the transfer device comprises a bracket or rod fixed to the needle carrier and a pull of an inner ring 8b secured to the retaining ring 8. Pin: the draw pin is engaged in a seat at the base frame of the bracket such that during rotation of the needle carrying device, the bracket pulls the pin and the integral inner ring 8a of the retaining ring Thus, the frame of the web and/or collection set is secured; by doing so, the rotation of the needle carrier is correspondingly transferred to the web and/or collection set. Note that the bracket-pull pin coupling is only used to synchronously transfer rotation from the needle carrier device to the roll and/or collection set, while the load is all supported by the fixture 45 (direct connection frame) 33 to the inner ring 8b) of the retaining ring 8.

In an alternative aspect of the former, the fixtures 45 are grouped to form a fraction of the load used to support the web and/or collection set, and the transport device 42 is configured to transport the needles Rotation of the carrier device to the roll and/or collection set and to the inner ring while supporting the fixed device The remaining fraction of the supported load.

The fraction supported by the fixture is preferably greater than 80% of the load and/or greater than 60% of the load and/or greater than 40% of the load, and/or correspondingly distributed by the transfer device. Below 20% of the load and / or below 40% of the load and / or below 60% of the load.

The frame 33 preferably includes a beam 34 positioned substantially horizontally in the collection space S and a pair of lateral support plates 35 and 36 secured to opposite sides of the beam 34 and facing each other. The lateral support plates 35 and 36 are preferably positioned substantially vertically. The beam 34 and the lateral plates 35 and 36 preferably support the collection means of the fabric produced by the machine and/or the tensioning device of the fabric produced by the machine and/or the tension of the fabric produced by the machine Device.

The beam 34 preferably extends longitudinally below the needle carrier device O, substantially symmetrical with respect to the central axis A of the needle carrier device and parallel to the central axis.

The fixture 45 preferably includes one or more screws 46, or one or more weld seams or equivalent means for directly securing the beam of the frame to the inner ring 8b of the ring 8 above the base frame 2.

The securing means may preferably comprise an individual mounting bracket to the frame of the inner ring of the retaining ring.

The web and/or collection set 30 preferably has an overall empty weight, i.e., has a collecting roller 31 but does not have a fabric produced by the machine, and is the weight of the fabric that can be wound up on the collecting roller 31 by the maximum amount. The class is substantially equal thereto and/or has an overall empty weight comprised between 90% and 110% of the weight of the maximum amount of fabric that can be wound on the collecting roller 31, or Between 80% and 120%, or between 70% and 130%, or between 50% and 150%, or between 20% and 200%. Also in the circular knitting machine of this embodiment, the knitting needle carrying device may be a knitting needle cylinder and a needle plate, and the knitting machine may be a single bed type (including a single needle carrying device) or a double bed type. (Including two needle-bearing devices, one needle cylinder and one needle plate).

As shown in Figures 7-21, the roll and/or collection set 30 preferably includes a collection roller 31 rotatably mounted to the frame 33 for rotation about an otherwise substantially horizontal axis of rotation; as described above, the collection roller 31 A fabric T produced by the knitting machine designated for collection, winding thereon and forming a single continuous layer. A collecting roller 31 extends between the longitudinal ends, and the collecting roller is rotatably mounted to the lateral plates 35 and 36 at the longitudinal ends. The axis of rotation of the collecting roller 31 is preferably deployed longitudinally parallel to the beam 34 of the frame 33.

In a possible embodiment, the roll and/or collection set may comprise a substantially flattening device 95 from the fabric T of the knitting machine in the form of a closed tubular knitwear produced by the knitting head. Time.

The flattening device 95 preferably includes a pair of rods 96 or rollers configured to be substantially horizontal to the collection space S below the needle carrier device O or above the collection roller 31, the pair of rods or rollers being laterally The arrangement is preferably perpendicular to the axis of rotation of the collection roller.

The rods 96 or rollers are preferably flanked to each other thereby defining a substantially linear passage for the tubular fabric T that is substantially flattened in one of the closures that determine the diameter of the tubular fabric along its diameter.

In a possible embodiment (not shown), the roll and/or collection The set may comprise a cutting device disposed downstream of the flattening device and capable of longitudinally cutting the tubular fabric produced by the knitting machine along a preferred vertical busbar, whereby the tubular fabric can be subsequently opened and wound A single layer is formed on the collecting roller.

The web and/or collection set 30 preferably includes an opening device 50 directly from the web in which the needle carrying device is in a single layer or by the tubular fabric produced by cutting the needle carrying device. The outward opening device 50 includes at least one outwardly opening rod 51 that is mounted and preferably secured to the frame and that is configured to progressively distance an opening for determining the two sides of the fabric, the fabric passing through the outwardly opening rod 51. The fabric which descends into the collection space S toward the collecting roller 31 and which extends in width across the outer opening rod is a single layer.

The open bar 51 preferably extends longitudinally between the two other ends 52 and 53, each mounted on an individual lateral panel of the frame and laterally extending from a front side of one of the beams 34 of the frame 33. The outwardly opening lever preferably has a curved configuration and progressively emerges from the two other ends spaced from the beam, thereby having a central portion 54 or point having a maximum distance from the beam and capable of guiding a The drop in the central portion of the fabric in a single layer.

The outer open lever 51 is preferably substantially symmetrical with respect to a vertical plane passing through the central axis of the needle carrying device and perpendicular to the axis of rotation of the collecting roller.

The outer open lever 51 preferably has a generally rounded V-shaped configuration, i.e., it has a curved central portion 54 or a circumferential arc, and two linear portions 55 and 56, in opposite directions from both sides of the central portion Disagreement, And each terminates on an individual lateral panel 35 and 36 of the frame 33. The open lever 51 is preferably disposed substantially horizontally in the roll and/or collection set 30. The central portion 54 or point is preferably secured to the frame by one or more central rods. The outer open lever 51 is preferably mounted to the frame 33 such that its lateral extension can be adjusted relative to the beam, particularly the maximum distance of the central portion or point, which can be adjusted relative to the beam 34 of the frame.

The roll and/or collection set 30 preferably further includes a guide ring 57, preferably fixedly mounted to the frame 33 in an upper position on the outwardly opening rod 51, the guide ring being configured for The guide is produced by the knitting machine directly from the needle-carrying device in a single layer or by a reduction in the fabric T obtained by cutting the tubular fabric produced by the needle-carrying device O.

The guide ring 57 is preferably provided with a hole in which the fabric is lowered, preferably sliding on the inside of the guide ring. The guide ring imparts a relief from the needle carrier device to the tension present at the exit in the fabric, which tends to wrap around the central axis of the machine or spiral material and is undesirable; thus, the fabric reaches The cutting device (if present) and the outward opening device have no internal tension and are perpendicular to the needle carrier device.

The guide ring 57 preferably extends laterally from the front side of the beam and extends outwardly from the beam 51 relative to the beam, the guide ring overlapping the outwardly opening rod 57.

The guide ring 57 is preferably disposed substantially horizontally in the roll and/or collection set 30.

Preferably, the guide ring is spaced a distance above the outward opening rod 57, comprised between 1 cm and 100 cm and/or contained between 5 cm and 50 cm. Between and/or included between 10cm and 30cm.

The outer open rod 51 and the guide ring 57 are preferably positioned in the roll and/or collection set 30 such that the fabric T from the needle carrying device descends through the outer open rod and toward the collecting roller. Previously, it descends inside the guide ring, crossing the hole of the guide ring, and below the guide ring.

The guide ring 57 preferably has a substantially circular configuration and is secured to the frame 33 for substantially coaxial alignment with the needle carrier device O. The guide ring 57 is preferably fixed to a central portion of the beam 33.

Some embodiments of a roll of cloth and/or collection set are now described for a circular knitting machine further oriented in accordance with the present invention, with particular reference to the schematic representations of Figures 13 and 14.

In view of the various embodiments of the roll and/or collection set of the present invention, the combination of a base frame according to the present invention is illustrated as being independent of the circular knitting machine shown in the example of the drawings and can be used in any open type. Circular knitting machines, even in conventional versions and/or in place of conventionally known rolls and/or collection sets.

Further note that the phrase "rolling and/or collecting set" identifies the set with reference to the open circular knitting machine, characterized in that it produces an "open" fabric, which is formed into a single layer and wound onto a collecting roller. Collected (thus preventing free fall or free collection of fabric under the needle carrier). From this point of view, the roll and/or collection group will of course be related to the collection of the fabric on the basis of the action of the open machine, and the winding operation of the fabric from the needle-bearing device may be selected. (although widely used in the longitudinal production of tubular fabric cutting open machines for external Open to form a single layer) that can be assigned to the roll and/or collection group (which in this case becomes a "roll and collection group") due to operations in the open type machine or directly On the needle carrying device (in this case, the web and/or collection set becomes a collection set that receives a fabric that has been tensioned and collects the fabric).

The roll and/or collection set 30 for an open circular knitting machine comprises an open configuration obtained directly from the needle carrier device in a single layer or by cutting a tubular fabric produced by the needle carrier device The opening device 50 of the fabric T. The outward opening device includes at least one outwardly opening rod 51, preferably fixedly mounted to the frame 33, and configured to determine an opening by progressively spaced apart from the sides of the fabric, the fabric passing over the outward opening rod The fabric is lowered toward a collecting roller 31 and extends across the width to form a single layer of fabric on the outwardly opening rod. The roll and/or collection set includes at least one collection roller 31 rotatably mounted to the frame and designated to receive fabric from the outward opening device and collect the fabric thereon into a single continuous layer, the collection roller capable of Rotate around a different axis of rotation.

The roll and/or collection set 30 further includes at least one relay roller 70 operatively interposed between the outward opening device of the fabric and the collection roller along a path of advancement of the fabric, the relay roller The fabric from the opener is received and delivered to the collection roller in a single layer. The relay roller is rotatable about a different axis of rotation and the relay roller is longitudinally stretched along the individual axis of rotation.

The roll and/or collection set 30 further includes at least one stretcher roller 60 or tensioning roller mounted to the frame in an operable intermediate position An individual longitudinal axis L substantially parallel to the axis of rotation of the collecting roller is disposed between the opening device 50 and the collecting roller. The stretcher roller 60 is configured to interact with the fabric T advancing toward the collection roller for flattening it, widening it between the ends 61, 62 on either side of the stretcher roller .

As shown in the example of FIGS. 13 and 14, the relay roller 70 has an individual rotating shaft disposed on a first vertical plane 71. The collecting roller 31 has an individual rotating shaft disposed on a second vertical plane 72, and The stretcher roller 60 has a longitudinal axis L disposed on a third vertical plane 73.

The stretcher roller 60 is positioned in the roll and/or collection set such that the distance between the third plane and the first plane is at least equal to the distance between the second plane 72 and the first plane 71, and The two planes 72 and the third plane 73 are in the same half space defined by the first plane 71.

The distance between the third plane 73 and the first plane 71 is preferably exactly equal to the distance between the second plane 72 and the first plane 71. In other words, the stretcher roller 60 is vertically aligned with the collection roller 31 (as shown in Figure 13, wherein the stretcher roller 60 is shown on one of the continuous lines below the collection roller).

The stretcher roller 60 is preferably positioned below the collection roller 31.

As shown in FIGS. 13 and 14, the first vertical plane and/or the second vertical plane and/or the third vertical plane are parallel to a central axis of the needle carrier device O.

In an alternative embodiment, the stretcher roller 60 is positioned in the roll and/or collection set 30 such that the distance between the third plane 73 and the first plane 71 is greater than the second plane 72 and the first plane. The distance between 71. In other words The stretcher roller 60 is located in the roll and/or collection set 30 at a forward position relative to the collection roller 31, i.e., on the opposite side of the collection roller relative to the relay roller 70. This embodiment is shown in Figure 13 with the stretcher roller 60 attached to one of the dashed lines below the collection roller (and advanced relative to the collection roller).

The stretcher roller 60 is positioned in the roll and/or collection group and is laterally spaced from the relay roller, that is, on a vertical plane about a central axis of the needle carrier device, greater than Collect the individual lateral distance of the roller from the relay roller.

Preferably, the individual rotating shafts of the collecting roller 31 opposite to the relay roller, the individual rotating shafts of the collecting roller 31, the individual rotating shafts of the relay roller 70, and the longitudinal axis L of the tensioner roller 60 are preferably parallel to each other, preferably Level.

The roll and/or collection set may preferably comprise a device for rolling the fabric 80 to wind the fabric onto the collecting roller 31, configured to impart advancement of the fabric T from the needle carrier device O, and for continuous use. The fabric is wound on the collecting roller 31 in a uniform and even manner.

The apparatus for rolling fabric 80 preferably includes at least one traction roller 81 movably mounted to the frame for contact with a contact line C of the collecting roller 31 transverse to the fabric, the traction roller 81 The set is configured to rotate to impart a corresponding rotation to the collection roller and to determine the continuous winding of the fabric on the collection roller.

The traction roller 81 is preferably positioned in the roll and/or collection set and is vertically aligned with and preferably below the collection roller.

At least one stretcher roller 60 is positioned on the roll and/or collected The group is vertically aligned with the traction roller and is preferably located thereunder.

The traction rollers 81 are preferably rotatable about an individual axis of rotation disposed on a fourth vertical plane. The stretcher roller 60 is positioned in the roll and/or collection set such that the distance between the third plane 73 and the first plane 71 is at least equal to the distance between the fourth plane and the first plane 71.

The traction roller 81 is preferably positioned in the roll and/or collection set and is laterally spaced from the relay roller 70, i.e., in a vertical plane about a central axis of the needle carrier device, At least equal to the individual lateral distance of the traction roller and the relay roller, and/or wherein the third plane and the fourth plane coincide with each other.

At least one stretcher roller 60 is positioned in the roll and/or collection set such that the distance between the third plane 73 and the first plane 71 is greater than the distance between the fourth plane and the first plane.

At least one stretcher roller 60 is preferably positioned in the roll and/or collection set in a forward position relative to the traction roller, i.e., opposite one of the traction rollers relative to the relay roller 70 On the side.

The at least one stretcher roller is preferably positioned in the roll and/or collection set and is laterally spaced from the relay roller, i.e., in a plane perpendicular to a central axis of the needle carrier device The upper side is larger than the lateral distance of the traction roller and the relay roller.

As shown in the example of FIG. 14, the device 80 for rolling fabric preferably includes a first traction roller 81 and a second traction roller 82, both of which act on a different contact line C and on the collection roller. Passing a rotation to the collecting roller and determining a continuous winding of the fabric on the collecting roller, the weaving The contact lines C defined by the first and second traction rollers are transversely intersected.

The at least one stretcher roller is interposed between the first traction roller 81 and a second traction roller 82.

At least one stretcher roller 60 is located in the roll and/or collection set at an intermediate position between the first traction roller 81 and the second traction roller 82.

At least one stretcher roller 60 is preferably positioned in the roll and/or collection set and is laterally spaced from the relay roller, i.e., one perpendicular to a central axis of the needle carrier device The plane is larger than the individual lateral distance of the first traction roller and the relay roller, and smaller than the individual lateral distance of the second traction roller and the relay roller.

The relay roller 70 can also preferably be a stretcher roller, in which case the roll and/or collection set has two stretcher rollers 60.

The roll and/or collection set 30 can comprise a conventional type of stretcher roller 60 (or two stretcher rollers, in which case the relay roller also has the function of a stretcher roller), ie, according to One or two stretcher rollers that are further contemplated by one of the present invention will be described below.

In the illustrated embodiment of the roll and/or collection set illustrated in Figures 7-12, the stretcher roller 60 also performs the function of a relay roller; in fact (see, in particular, Figures 7, 8, 1 and 11), The stretcher roller 60 is positioned downstream of the outward opening device and in a retracted position relative to the collecting roller, the stretcher roller is capable of receiving the opened fabric from the outward opening device and A single (and flat) layer is sent to the collecting roller.

The roll and/or collection set of the present invention may preferably additionally comprise the orientation of the fabric T continuously produced by the pull device 90 to the needle carrier device O. Pulling in the downward direction, the pulling device determines a tight drop of the fabric into the collection space S. The pulling device 90 preferably includes one or more pulling rollers that are coupled in series with each other and that act on the fabric to force it toward the collecting roller 31. In Figures 13 and 14, three pull rollers 91, 92 and 93 are shown by way of example, positioned in series with one another and sequentially intersected by fabric T.

The roll and/or collection set of the present invention may preferably additionally comprise cutting means (e.g., of a conventional type, not shown) disposed downstream of the flattening means 95 (as described above) and capable of A preferred vertical bus bar longitudinally cuts the tubular fabric T produced by the knitting machine, whereby it can be subsequently opened to the outside and wound into a single layer on the collecting roller 31.

The roll and/or collection set can include an actuator (eg, an electric motor or a pneumatic actuator) that imparts rotation to different components of the set, such as a stretcher roller, a relay roller, a pull roller, Traction rollers and/or collection rollers. For example, the roll and/or collection set can include individual actuators acting on the collection roller (or traction roller) to allow it to rotate and determine the winding of the fabric thereon.

With particular reference to Figures 15 and 15a, the following is a description of a stretcher roller further oriented in accordance with one aspect of the present invention, independent of the previous orientation, and designated for use in the roll and/or collection of the open circular knitting machine. In the group.

The stretcher roller 60 or the tensioning roller is designated to be mounted on a roll of cloth and/or the frame 33 of the collection set 30 at an intermediate position between the needle carrier device O of the knitting machine and the fabric used for the fabric Between the collecting rollers 31, and a further longitudinal axis L is arranged, the longitudinal axis being substantially parallel to the axis of rotation of the collecting roller 31.

The stretcher roller 60 is configured to interact with the fabric T advancing toward the collecting roller 31 such that the fabric passes over, is in contact with, and is in contact with at least a portion of the stretcher roller and is configured to stretch The fabric faces the opposite lateral ends 61 and 62 of the stretcher roller.

The stretcher rollers are configured to progressively open the fabric passing over the stretcher rollers in a width such that the fabric is open when it reaches the collecting roller 31 and is evenly drawn over its entire length. Stretch. In addition, the stretcher rollers are constructed to resist the tendency of the portion of the fabric adjacent the outer edges of the fabric to be rolled longitudinally, i.e., in the direction of sliding of the fabric. The stretcher roller 60 includes a rod 63 mountable to the frame and having a longitudinal axis L, and a plurality of bearing pads 65 rotatably mounted to the rod 63 for rotation on the rod, each bearing bush being independent of the other bearing bushes One other rotating shaft 66a. Each bearing pad 65 is deployed on a different deployment plane 66 that is inclined transversely rather than perpendicularly relative to the longitudinal axis L of the rod of the stretcher roller 63.

In other words, each of the bearing pads is configured to be non-perpendicular to the rod and to rotate about one of the axes of rotation that is inclined relative to the longitudinal axis L of the rod 63. In addition, the individual axes of rotation of the pads 65 are perpendicular to the individual deployment planes 66, and each of the pads 65 rotate about their axis of rotation when resting on the individual deployment planes 66.

Each of the bearing pads 65 is preferably rotatably mounted to the rod 63 so as to be free to idle about the axis of rotation of the shaft. In other words, the bearing pad 65 is preferably not activated by the actuator and is free to rotate about its axis of rotation 66a in both directions of rotation. Each of the bearing pads is rotated by and in contact with the fabric T by the effect of the fabric advancing toward the collecting roller 31. In other words, the rotation of each bearing bush occurs by the effect of pulling the advancing fabric thereon.

The rotational speed of each bearing pad 65 is preferably equal to the advancement speed of the fabric at all points where it contacts the fabric T.

As shown in FIG. 15, a plurality of bearing pads 65 preferably include a first set of bearing pads 68 and a second set of bearing pads 69 having bushings 65 having individual unfolding planes 66 all relative to the drawing. The longitudinal axis of the rod of the roller is at a first first angle of inclination a, and the second set of bushings 69 has a bearing 65 having an individual deployment plane 66 all of which is relative to the longitudinal axis L of the rod of the tensioner roller. An identical second angle of inclination.

The first set of bearing pads 68 preferably extends from a central portion 64 of the rod of the tensioner roller to a first end 61 of the tensioner roller, and a second set of bearing pads 69 extend from the central portion of the rod To a second end 62 of the stretcher roller opposite the first end 61.

The first angle of inclination a and the second angle of inclination are preferably mirrored or opposite with respect to a vertical axis of the longitudinal axis L or with respect to a central portion 64 of the rod.

Each of the bearing pads 65 of the first set of bushings 68 is preferably configured to apply a tensile force toward the first end 61 of the stretcher roller on the portion of the fabric in contact therewith, and a second set of bearing pads 69 Each bearing pad 65 is configured to exert a tensile force on a respective portion of the fabric T in contact therewith toward the second end 62 of the stretcher roller such that the overall fabric T is wider in width than the stretcher roller The first end 61 and the second end 62 are completely open or stretched.

The first angle of inclination of the unfolding plane 66 of the bearing pad 65 of the first set of bushings 68 is preferably equal to an angle that is less than 89° and/or less than 87° and/or less than 85° with respect to the longitudinal axis of the rod. And / or less than 80 °, and the system is greater than 50° and/or greater than 60° and/or greater than 70°.

The second angle of inclination is preferably mirrored to the first angle of inclination relative to a vertical axis of the longitudinal axis and is equal to the angle of the first angle of inclination.

The total value of the smaller angle formed by the unfolding plane 66 of the bushings of the first set of bushings 68 and the longitudinal axis of the stretcher rollers 60, and the unfolding plane 66 of the bushings of the second set of bushings 69 The value of the larger angle formed by the longitudinal axis of the stretcher roller is preferably substantially 180 degrees.

The algebraic total of the smaller angle formed by the unfolding plane 66 of the bearing pad 65 of the first set of bushings 68 and the longitudinal axis L of the stretcher roller, and the unfolding plane 66 of the bearing pad 65 of the second set of bushings 69 The value of the individual smaller angle formed by the longitudinal axis L of the stretcher roller is preferably 0°, i.e., the value of the smaller angle formed by the plane of unfolding of the first set of bearings and the longitudinal axis L, and The values of the smaller angles formed by the unfolded planes of the second set of bushings and the longitudinal axis L are equal and opposite to each other.

Similarly, each bearing pad 65 preferably has its axis of rotation inclined at an angle greater than 1° and/or greater than 3° and/or greater than 5° and/or greater than 10° with respect to the longitudinal axis of the rod and Less than 40° and/or less than 30° and/or less than 20°.

The stretcher roller 60 is preferably mounted in the roll and/or collection set 30 such that the fabric T is retractably wound onto the exterior of the stretcher roller before it is wrapped around the stretcher roller 60. a contact portion of the surface, the contact portion being continuous and extending a predetermined angle less than full rotation, starting from the fabric to contact an attachment wire of the stretcher roller, until the fabric is detached from the stretcher roller and A path to the collection roller 31 is removed from the path. The connection The contact portion changes instantaneously on each bearing pad and remains constant in the space relative to the rod of the stretcher roller 60.

The stretcher roller 60 is preferably mounted in the roll and/or collection set such that the fabric T is wound thereon until the contact portion of the stretcher roller corresponds to the bearing pad 65 of the first set 68 An individual bearing pad portion capable of moving the superimposed fabric toward the first end of the stretcher roller during rotation of the bearing pads, and a portion of the respective bearing pad 65 corresponding to the second set of bearing pads 69 capable of rotating on the bearing pads The superimposed fabric is moved toward the second end 62 of the stretcher roller.

Stretcher roller 60 is preferably mounted in the roll and/or collection set 30 such that the bearing pad portion of the first set of bearing pads 68 corresponding to the contact portion faces the first end 61 of the stretcher roller, and The bearing portion of the second set of bearing pads 69 corresponding to the contact portion faces the second end 62 of the tensioner roller such that the fabric T is in the path along the contact portion of the tensioner roller from the first The set of bushings 68 and the second set of bushings 69 are laterally open and stretched toward the ends of the stretcher rollers.

During advancement of the fabric between the attachment line and the detachment line, each of the bearing pads 65 of the stretcher roller 60 preferably laterally stretches the fabric in contact therewith by a certain amount along the longitudinal axis L of the roller. The basis weight is proportional to the angle of inclination of the individual deployment planes of the bearing pads relative to the longitudinal axis L of the rod and to the angle and surface extension of the contact portion between the attachment line and the detachment line.

The rod 63 is preferably affixed to the frame 33 of the web and/or collection set 30 such that the fabric T between the attachment and detachment lines of the stretcher roller, The portion in contact with the bearing pads of the first set of bushings 68 is progressively drawn toward the first end 61 of the tensioner roller, and the portion in contact with the bearing pads of the second set of bearing pads 69 is progressively drawn toward the tensioner. The second end 62 of the roller.

The stretcher roller 60 is preferably configured to be mounted to the frame of the roll and/or support set, maintaining the longitudinal axis L of the rod fixed and varying the angular position of the rod, thereby being relative to the fabric T The attachment wire and the detachment line modify the angular position of the bearing pad 65. As such, it is possible to vary the effects of the bearing pads on the fabric while increasing or decreasing the lateral stretching performed by the bearing pads.

In an alternative embodiment (not shown), the stretcher roller 60 is mounted to the frame 33 of the roll and/or collection set such that the bearing pad 65 exerts a force against the central portion 64 of the stem 63 and determines the fabric. The narrowing of T, i.e., the reduction or closure of the width as the fabric passes over the roller.

As shown in Figures 15 and 15a, each of the bearing pads has a disc, wheel or roller configuration, which in particular has a circular cross section.

Each bearing pad 65 preferably has a substantially annular outer bearing pad. All of the bearing pads 65 of the first set of bearing pads 68 are identical to each other, and all of the bearing pads 65 of the second set of bearing pads 69 are identical to each other. Still more preferably, all of the bearing pads 65 of the stretcher roller 60 are identical to one another, as shown by the example in the figures, and may only have a change in relative tilt angle relative to one of them mounted on the rod 63. The bearing pad 65 is preferably realized by molding, for example, a plastic material.

The bearing pad 65 is preferably configured to avoid sliding of the fabric T on the outer surface such that the fabric does not slide over the pad between its extension and the escape line. Or running, but it is constant The ground is in contact with the outer surface of the bearing pads and thus toward the ends 61 and 62 of the stretcher roller.

The bearing pads 65 are preferably coated with rubber on their outer surface, or other material suitable for increasing the grip of the fabric on the bearing pads and the tension applied by the bearing pads to the fabric.

Each bearing pad 65 is preferably mounted to the rod by a flat bearing that is rotatable about the bearing and that is firmly restrained internally to the rod of the tensioner roller. Preferably, the rod has a polygonal section (preferably non-circular) and the bearing of each bearing has a central bore shaped to complement the stem section, thereby avoiding rotation of the bearing on the stem and/or The guide bushes are guided to the rod at the correct angle of inclination.

The planar bearing is preferably a bushing or the flat bearing is a bushing or bearing made of a self-lubricating high-tech polymer, has a low coefficient of friction and contains a metal and a metal alloy.

The individual bearing pads 65 of the first set of bushings 68 and the second set of bushings 69 are laterally joined and preferably in substantial contact with each other. The stretcher roller may only have one or more longitudinal portions with a bearing between the first end 61 and the second end 62 of the roller in which the stretching of the fabric T toward the width of the collecting roller 31 is intended to be performed. 65.

In the roll and/or collection set, the stretcher roller is preferably disposed laterally (preferably vertically) at a point in the direction of advancement of the fabric T, wherein the fabric contacts the stretcher roller 60 At this point, it begins to advance around the roller 60. The stretcher roller 60 is preferably mounted to the frame 33 of the roll and/or collection set 30 between an opening device 50 and the collecting roller 31. In the location.

Observing the above-mentioned stretcher roller, the object of the invention, which can advantageously be used inside a roll set according to the invention, such as the roll set of Figure 7, or the roll described with reference to Figure 13 or Group, or a set of rolls as described with reference to Figures 16-18 or 19-21. In general, the stretcher roller 60 of the present invention can be used with any open type circular knitting machine, including replacement of stretcher rollers already present in the machine, in accordance with the present inventors and the prior art.

The invention, as it is contemplated, is susceptible to numerous modifications and variations, all of which fall within the scope of the inventive concept, and the components mentioned may be replaced by other technically equivalent elements. This invention provides important advantages. Primarily, the invention excludes certain deficiencies of the prior art.

Further, the two leg base frames impart a circular knitting machine that achieves an open pattern with a smaller overall size, particularly a smaller width, than conventional solutions.

Further, the open knit machine having two leg base frames imparts transport to facilitate the machine itself, and in particular to transport machines having the entire base frame installed, including the use of a standard type of conveyor.

A further advantage of the open knit machine having two leg base frames relates to the higher advancing of the machine, and in particular the possibility of accessing the collection space and accessing the knitting head and the needle carrier device .

A further advantage of the open knit machine having two leg base frames is the possibility of quickly and easily performing the loading and unloading operations of the fabric produced and collected by the roll and/or collection set.

The open knitting machine with two leg base frames The advantage of the step is to increase the width (or the pulling) of the fabric that can be produced by the machine, by increasing the longitudinal dimension of the machine without increasing the likelihood of its lateral obstruction; in other words, the machine can be significantly Longitudinally elongated without causing a considerable degree of relaxation in the lateral direction.

The open knitting machine having two leg base frames is further characterized by a simple and rational structure and simplifies the operation of actually implementing, installing, setting and repairing the machine.

Further, the open knitting machine having two leg base frames gives an increase in productivity relative to conventional machines.

The present invention further provides various embodiments of the web and/or collection set that are capable of providing numerous advantages. Essentially, the roll and/or collection set of the present invention is characterized by a simple, compact and sensible structure and allows the mounting of the machine on the base frame from the point of view of supporting the load and from the carrier carrying device relative to the needle. The idea of synchronous rotation can be done efficiently.

Further, the roll and/or collection set of the present invention is capable of effectively and uniformly opening and stretching the fabric to avoid the formation of wrinkles and curling of the edges of the collected fabric.

The present invention further provides a stretcher roller that then provides numerous advantages.

First, the stretcher roller of the present invention imparts complete opening and effective stretching of the fabric and in a planar configuration avoids and prevents the formation of wrinkles and folding along the overall width of the fabric. Further, the stretcher roller imparts the advantageous effect of allowing the fabric to uniformly stretch the fabric before it reaches the collection roller, resulting in stretching of the fabric.

Further, the stretcher roller eliminates the problem of roll-up of the lateral side of the fabric, and in particular the problem of the art of open knitting machines.

At the same time, the stretcher roller imparts a reduced space on the interior of the web and/or collection set for performing effective outward stretching prior to winding the fabric around the collection roller; The rolls and collection groups are generally dense.

A further advantage of the stretcher roller of the present invention is its modularization, which is achieved by the use of a plurality of independently mountable differential bushings. This modularity increases the versatility of the stretcher rollers, which translates into a variety of forms of treatable fabric and greater flexibility in a variety of sizes. This versatility is the choice of stretching (in width) of the portion of the fabric, as well as the laterally stretched entities applied to the fabric. Furthermore, the structure of the stretcher roller, in particular its modularization, makes it simple to implement and represents an overall cost that is characterized by a modest performance and quality.

Claims (10)

An open circular knitting machine for knitwear, which is configured to produce fabrics and collect them in an open configuration, i.e., in a single layer, the machine comprising: a base frame that constitutes the load of the machine The structure includes a support upper ring or member, a lower base or a cross base, and at least two support legs, the support legs being inserted into the upper ring in at least two different and laterally spaced positions The lower substrates are connected to each other such that the upper ring system vertically overlaps and is spaced apart from the lower substrate, and a collecting space between the upper ring and the lower substrate is vertically defined, and the collecting space does not have the base frame An element, and a roll and collection set designated to movably receive the fabric produced by the knitting machine; a knit head mountable to the upper ring and provided in the form of a needle cylinder or a needle plate a rotatable at least one needle carrying device, provided with a plurality of knitting needles movably mounted to the at least one needle carrying device, and provided for selectively activating the plurality of knitting needles to impart weaving a handling device for producing; a roll of cloth and a collection set movably received in the collection space and configured and pre-set to at least open and stretch, or even possibly by the needle carrier device a fabric produced by the machine, which is wound into a single layer and continuously wound on at least one collecting roller; wherein the integral roll and collection set are rotatably mounted and suspended The base frame or the needle carrying device is thereby suspended vertically in the collection space. A knitting machine according to claim 1, wherein the knitting head is mounted to the upper support ring such that the needle carrying device is rotatable about a substantially vertical central axis, wherein the knitting machine further comprises at least one of the following restrictions : (i) the roll and collection set is suspended from the base frame or the needle carrying device to rotate with the needle carrying device in a stable or angular coordinate manner; and (ii) preferably a weave The needle carrying device of the needle cylinder has a diameter greater than 24 inches. The knitting machine of claim 1 or 2, wherein the roll and collection set lacks support means for at least one of joining and centering to at least one of a lower portion and a side of the base frame, in particular There is a lack of support means for attaching the roll and collection set to at least one of: (a) a base or cross-substrate of the base frame; and (b) the support legs of the base frame. A knitting machine according to claim 1 or 2, further comprising at least one of the following restrictions: (iii) the roll and collection set comprises a support frame that houses a collection device for the fabric produced by the machine And a roll device accommodating the fabric produced by the machine, the support frame including mounting means fixed to the base frame or the needle carrying device, and configured and sized to be suspended Support the entire roll and collection group Body load, wherein the overall load comprises the weight of the roll and the collection set and the fabric collected on the at least one collection roller, and is determined by the rotation of the roll and the collection set and transmitted to the base frame or The needle carries the stress of the device; (iv) the mounting device is uniquely disposed at an upper portion of the support frame and is not present below, laterally or both of the frame; (v) the roll And the collection group is all suspended from the base frame and the integral load system is all supported by the base frame; (vi) the roll and the collection group are all suspended from the needle carrier device, and the overall load system is all Supported by a needle carrier device. A knitting machine according to claim 4, further comprising at least one of the following restrictions: (vii) the mounting device comprises at least one mounting bracket that directly connects the frame of the roll and collection set to the knitting needle Carrying a device to stabilize the roll and collection set with the needle carrying device, the at least one mounting bracket supporting the overall load of the roll and the collection set, and simultaneously serving as the roll carrying device to the roll And a drive transport device of the collection group, whereby the needle carrier device and the rotation of the web assembly and the collection group occur synchronously and coaxially, that is, an angle determined by one of the needle carrier devices around the central axis Rotating, corresponding to the same angular rotation of the web and collection set about the same axis; and (viii) the at least one mounting bracket is fixed to a single continuous bearing of the needle carrying device, the bearing has an inclusion An angular extension between 10° and 180° with respect to the central axis. The knitting machine of claim 4, further comprising at least one of the following constraints: (ix) the base frame includes a retaining ring mounted to the support ring relative to the upper ring and coaxially therewith In a lower position, the retaining ring has a central bore, wherein the fabric produced by the machine and the fabric from the needle carrying device progressively descends into the collection space through the central aperture, and the retaining ring includes an outer portion a ring and an inner ring fixed to and firmly constrained to the base frame, the inner ring being coaxially and rotatably mounted to the outer ring; and (x) an outer ring of the retaining ring And the inner ring as a whole realizes a fifth wheel or bearing which is preferably a rotary type. The knitting machine of claim 6, further comprising at least one of the following restrictions: (xi) the mounting device includes a securing device that directly connects the support frame of the roll and collection set to the inner ring of the retaining ring Thereby securing the roll and collection set with the inner ring, the fixed device at least partially supporting the load of the roll and the collection set; and (xii) the mounting device further comprising a separately driven transfer device, Attaching the needle carrying device to the support frame of the roll and collection set or to the inner ring of the retaining ring such that the needle carrying device, the roll and the collection set, and the rotation of the inner ring are synchronously Coaxially occurring, i.e., angular rotation determined by one of the needle carrier devices about the central axis, corresponds to angular rotation of the roll and collection set and the inner circumference of the same axis. The knitting machine of claim 7, further comprising at least one of the following restrictions (xiii), wherein the fixing device is configured to support an overall load of the roll and the collection set, and the conveying device is formed Used to convey the rotation of the needle carrier device to the roll and collection set and to the inner ring without supporting the load; and (xiv) alternatively, the fixture is configured to support the roll a fraction of the load of the cloth and the collection set, and the transport device is configured to transmit the rotation of the needle carrier to the roll and collection set and to the inner ring, and simultaneously support the fixed device Supporting the remaining fraction of the load; (xv) the fraction supported by the fixed device is greater than 40% of the load; and (xvi) the remaining fraction supported by the transmitting device is correspondingly low 60% of the load. The knitting machine of claim 7, further comprising at least one of the following constraints: (xvii) the support frame includes a beam and a pair of lateral support plates positioned substantially horizontally in the collection space And the pair of lateral support plates are fixed on opposite sides of the beam and face each other, the lateral support plates are substantially vertically positioned, and the beams and the lateral support plates are supported by the machine. At least one of the collection device of the fabric and the fabric device of the fabric produced by the machine; (xviii) the beam extends longitudinally below the needle carrier device and The central axis of the needle carrying device is substantially symmetrical and parallel to the central axis; (xix) the fixing device comprises one or more screws, or one or more weld beads or equivalent means for Attaching the beam of the support frame directly to the inner ring of the retaining ring of the base frame; and (xx) the securing means can include an individual mounting bracket for mounting the frame to the inner ring of the retaining ring . The knitting machine of claim 1 or 2, further comprising at least one of the following restrictions: (xxi) the roll and the collection group having at least one of the following: (a) an overall empty weight, ie having the Collecting the rollers but not having the fabric produced by the machine, the overall empty weight and the maximum amount of fabric that can be wound on the collecting roller are at the level of the fabric or substantially equal, and (b) an overall empty weight The weight is comprised between 20% and 200% by weight of the maximum amount of fabric that can be wound on the collecting roller; (xxii) the needle carrying device is a needle cylinder or a needle plate; (xxiii) the knitting machine is a single needle bed type comprising a single needle carrier device, or a double needle bed type comprising two needle carrier devices, wherein the two needle carrier devices are each a needle Cylinder and a needle plate.