CN211057363U

CN211057363U - Double-needle-cylinder loom tensioning device

Info

Publication number: CN211057363U
Application number: CN201921431737.3U
Authority: CN
Inventors: 丁孝君; 宿新春
Original assignee: Zhejiang Yexiao Machinery Science & Technology Co ltd
Current assignee: Zhejiang Yexiao Machinery Science & Technology Co ltd
Priority date: 2019-04-10
Filing date: 2019-08-30
Publication date: 2020-07-21
Anticipated expiration: 2029-08-30

Abstract

The utility model provides a double-cylinder loom overspeed device tensioner, double-cylinder loom includes support frame, last cylinder and lower cylinder, the transmission shaft is passed through to the bottom of going up cylinder and lower cylinder and is connected, the transmission shaft drives the cylinder and the coaxial rotation of lower cylinder the inside overspeed device tensioner that sets up of cylinder down, set up track assembly in the overspeed device tensioner, track assembly is used for guiding the removal of sinker, contain at least one crest on track assembly's the track. Twin-cylinder loom overspeed device tensioner, set up the motion track of sinker into the wave that has two crests for cylinder rotates the in-process of round under, the sinker removes twice to the direction that central axis b was just kept away from to the upper end, accomplishes twice elastic filament and moves back the circle, avoids the elastic filament too tensioning and fracture, guarantees the elasticity of fabric. The tensioning barrel is arranged to be of a split structure, so that parts can be maintained and replaced conveniently in the working and running process of the weaving machine, and the service life of the equipment is prolonged.

Description

Double-needle-cylinder loom tensioning device

Technical Field

The utility model relates to the technical field of knitting, in particular to double-cylinder loom overspeed device tensioner.

Background

Knitting machines with needles arranged on a circular needle cylinder for the production of circular weft-knitted fabrics, circular knitting machines for short. The circular loom consists of mainly yarn feeding mechanism, weaving mechanism, drawing-winding mechanism and driving mechanism. Circular knitting machines include both single-needle cylinder and double-needle cylinder types. The single needle cylinder is only woven by the next needle cylinder; the prepared fabric rib top is double-layer, and the single-needle-cylinder loom has more thread ends and feels slightly tight when in jacquard. The double needle cylinders adopt an upper needle cylinder and a lower needle cylinder to work simultaneously, and the manufactured fabric rib top is single-layer and comfortable; and the double-needle cylinder jacquard has no thread end; with regard to the weaving effect and the overall wearing comfort of the sock, the double-needle sock is more comfortable than a single-needle sock by one grade, and many users have higher requirements on the quality of the sock and can appoint to do double-needle socks.

Double-cylinder circular machines generally comprise a supporting structure, which is mainly composed of a base, which rests on the ground and supports the lower needle cylinder so that it can rotate about its own axis, which is oriented vertically. The base also supports an upper needle cylinder, arranged above and coaxially with respect to the lower needle cylinder, by means of a column standing vertically from the base.

Patent publication No. CN103946432B of the prior art discloses a tensioning device for a double-cylinder circular machine, a first step consisting in conveying or retaining all the needles in a lower needle cylinder, in the upper heads of which the loops of the last formed row of knitting of the manufacture are engaged, tensioning the manufacture downwards in the lower needle cylinder; a second step comprising moving all the needles to tuck-stitch positions; a third step consisting in pushing up the portion of the article engaged with the needles; a fourth step consisting in disengaging the sinkers from the manufacture so that the latter moves, due to the upward thrust, the loops of the last row of knitting in the upper head of the needles; a fifth step, which consists in lifting the needles to the drop-stitch position, keeps the article pushed upwards so as to keep the loops of the last row of knitting in the upper heads of the needles. The arrangement of the tensioning devices of this prior art allows the sinkers to be housed inside the lower needle cylinder with their prongs moving towards and away from the axis of the lower needle cylinder, achieving knockover. However, in the actual use process, when the double-needle-cylinder loom weaves fabrics, the needle cylinder rotates for one circle and only carries out one-time knocking-over, namely, the elastic silk thread is only released for one time, so that the elastic silk thread is easy to break, and the socks lose elasticity.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a tensioning device for a double-cylinder loom, so as to solve the problems in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

A double-needle-cylinder loom tensioning device comprises a support frame, an upper needle cylinder and a lower needle cylinder, wherein the bottom ends of the upper needle cylinder and the lower needle cylinder are connected through a transmission shaft, the transmission shaft drives the upper needle cylinder and the lower needle cylinder to coaxially rotate, a tensioning device is arranged in the lower needle cylinder, a track assembly is arranged in the tensioning device and used for guiding a sinker to move, and at least one wave crest is arranged on a track of the track assembly.

Further, the rail assembly includes an upper cover and a lower cover, and a gap is provided between the upper cover and the lower cover, the gap forming a rail guiding the movement of the sinker.

Furthermore, the bottom surface of the upper cover body and the top surface of the lower cover body are both provided with irregular wave-shaped structures, the top surface of the lower cover body is provided with convex parts and concave parts, and the convex parts and the concave parts are alternately arranged.

Furthermore, the part of the bottom surface of the upper cover body corresponding to the protruding part of the lower cover body is provided with a concave structure, and the part of the bottom surface of the upper cover body corresponding to the concave part of the lower cover body is provided with a convex structure.

Further, overspeed device tensioner includes the base, sets up at the inside hose that falls of base and the tensioning component that is located the base top, base, hose that falls and tensioning component coaxial arrangement.

Further, the tensioning assembly comprises a lower tensioning barrel, an upper tensioning barrel, a tensioning bowl and a track assembly for guiding the sinker to move, wherein the lower tensioning barrel is arranged at the top of the base and is fixedly connected with the base.

Furthermore, the inner surface of the upper tensioning cylinder, which is close to the central axis b, is set to be a curved surface, the outer surface of the track assembly, which is far away from the central axis b, is also set to be a curved surface, and an installation part for installing a sinker is formed between the two curved surfaces.

Further, the tensioning bowl is arranged at a position close to the central axis b, the tensioning bowl comprises a bowl-shaped part at the top end and an extension part at the bottom, the bowl-shaped part is arranged in a radial shape and matched with the shape of the upper cover body, and the extension part is arranged in a cylindrical structure.

Further, be provided with the mounting groove on the lateral wall of base, the mounting groove is inside sunken, and the inside hidden installation oil pipe of mounting groove, the top and the track subassembly intercommunication of oil pipe.

Further, the interior of the sock falling pipe is a mirror surface.

Twin-cylinder loom overspeed device tensioner, set up the motion track of sinker into the wave that has two crests for cylinder rotates the in-process of round under, the sinker removes twice to the direction that central axis b was just kept away from to the upper end, accomplishes twice elastic filament and moves back the circle, avoids the elastic filament too tensioning and fracture, guarantees the elasticity of fabric. The tensioning barrel is arranged to be of a split structure, so that parts can be maintained and replaced conveniently in the working and running process of the weaving machine, and the service life of the equipment is prolonged.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic structural view of a double-cylinder loom according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a tensioning device of a double-cylinder loom according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a track assembly of a tensioning device of a double-cylinder loom according to an embodiment of the present invention;

FIG. 4 is a schematic view of the explosion structure of the tensioning device of the double-cylinder loom according to the embodiment of the present invention;

FIG. 5 is a schematic structural view of a sinker of a double-cylinder loom according to an embodiment of the present invention;

Fig. 6 is a partially enlarged view of a portion a in fig. 3.

Description of reference numerals:

1-support, 2-upper needle cylinder, 3-lower needle cylinder, 4-base, 5-upper needle cylinder mounting plate, 6-lower needle cylinder mounting plate, 7-drive shaft, 8-pulling device, 9-tensioning device, 91-tensioning assembly, 910-track assembly, 911-lower tensioning cylinder, 912-upper tensioning cylinder, 913-central cylinder, 914-upper cover, 915-lower cover, 9151-boss, 9152-recess, 916-tensioning bowl, 9161-bowl, 9162-extension, 92-drop hose, 93-base, 931-mounting groove, 932-oil tube, 10-sinker, 101-arc body, 102-boss.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present embodiment provides a double-cylinder loom, which comprises a support frame 1, an upper cylinder 2 and a lower cylinder 3, wherein the support frame 1 comprises a base 4 for resting on the ground for supporting, an upper cylinder mounting plate 5 and a lower cylinder mounting plate 6 which are arranged on the base 4. The upper needle cylinder 2 and the lower needle cylinder 3 are connected through a transmission shaft 7, and the transmission shaft 7 drives the upper needle cylinder 2 and the lower needle cylinder 3 to coaxially rotate.

A plurality of axial grooves are provided on the lateral surface of the upper needle cylinder 2 and on the lateral surface of the lower needle cylinder 3, and the axial grooves on the lateral surface of the upper needle cylinder 2 are aligned with the axial grooves on the lower needle cylinder 3, inside which are housed the knitting crochet needles that can be mutually transferred on command between the axial grooves of the lower needle cylinder and the axial grooves of the upper needle cylinder, achieving the pick-up of the yarn and the formation of the fabric.

The drawing device 8 is arranged in the upper needle cylinder 2, the tensioning device 9 is arranged in the lower needle cylinder 3, the central shaft of the lower needle cylinder 3 is an axis b, and the tensioning device 9 is positioned in the center of the lower needle cylinder 3 and is coaxially arranged with the lower needle cylinder 3. When the fabric is knitted, the traction device 8 in the upper needle cylinder 2 compresses the position of the edge of the fabric coil on the upper end of the tension device 9 in the lower needle cylinder 3, so that the flatness of the fabric is ensured, and the quality of a knitted product is improved.

As shown in fig. 2 to 6, in particular, the tensioning device 9 includes a base 93, a hose 92 disposed inside the base 93, and a tensioning assembly 91 located at the top end of the base 93. The base 93, the drop tube 92 and the tensioning assembly 91 are coaxially arranged. The base 93 is a cylindrical structure and used for supporting and protecting the top tensioning assembly 91 to a certain extent and improving the working stability of the top tensioning assembly. The interior of the sock dropping pipe 92 is provided with a mirror surface, so that the surface roughness is improved, the friction with the fabric is reduced, and the quality of the fabric is improved.

Further, the tension assembly 91 includes a lower tension cylinder 911, an upper tension cylinder 912, a tension bowl 916, and a rail assembly 910 for guiding the movement of the sinker 10. Lower part tensioning barrel 911 sets up at the top of base 93, with base 93 fixed connection, and lower part tensioning barrel 911 mainly used supports upper portion tensioning barrel 912, increases the stability of the whole operation of tensioning assembly, and on the other hand sets up the tensioning barrel to split type structure convenience and maintains the change, lifting means life at the in-process of loom work operation.

The internal surface that upper portion tensioning cylinder 912 is close to central axis b sets up to the curved surface, and track subassembly 910 keeps away from central axis b's surface also sets up to the curved surface, forms the installation department that is used for installing sinker 10 between two curved surfaces, guarantees that the sinker is stably installed inside tensioning unit 91. Further, the sinker 10 includes an arc-shaped body 101 and a protrusion 102, wherein a hook is disposed at a tip end of the arc-shaped body 101, the protrusion 102 is disposed at a position of the arc-shaped body 101 near a bottom end, the arc-shaped body 101 is located between two curved surfaces of the track assembly 910 and the upper tensioning barrel 912, and the protrusion 102 is located in the track assembly 910.

The track assembly 910 includes an upper cover 914 and a lower cover 915, with a gap provided between the upper cover 914 and the lower cover 915, the gap receiving the boss 102 of the sinker 10 therein, the gap forming a wave-shaped track guiding the movement of the sinker 10. The bottom surface of the upper cover body 914 and the top surface of the lower cover body 915 are both provided with irregular wave-shaped structures, and the structure of the top surface of the lower cover body 915 is taken as an example: the upper surface of the lower cover body 915 is provided with convex parts 9151 and concave parts 9152, the convex parts 9151 and the concave parts 9152 are alternately arranged, the number of the convex parts 9151 is two, and the two convex parts 9151 are separated by the concave parts 9152; in cooperation with the structure of the top surface of the lower cover body 915, the portion of the bottom surface of the upper cover body 914 corresponding to the protruding portion 9151 of the lower cover body 915 is configured to be a concave structure, and the portion of the bottom surface of the upper cover body 914 corresponding to the concave portion 9152 of the lower cover body 915 is configured to be a convex structure, so that the formed wave-shaped track has two wave crests. When the convex part 102 of the sinker 10 reaches the peak position of the wavy track, the hook-shaped part of the arc-shaped body 101 moves towards the upper end and away from the direction of the central axis b to drive the elastic threads on the knitting crochet needle to move back, so that in the process that the lower needle cylinder 3 rotates for one circle, the sinker 10 moves towards the upper end and away from the direction of the central axis b twice to finish twice elastic thread loop return, the elastic threads are prevented from being too tensioned and broken, and the elasticity of the fabric is ensured.

Further, the tension bowl 916 is disposed near the central axis b, the tension bowl 916 includes a top bowl portion 9161 and a bottom extension portion 9162, the bowl portion 9161 is disposed radially to match the shape of the upper cover 914, and the extension portion 9162 is disposed in a cylindrical structure. The extension portion 9162 separates the fabric from the track assembly 910, prevents the upper and lower edges of the gap of the track assembly 910 from scraping the fabric, and improves the smoothness of the fabric. And the tension bowl 916 also provides some sealing, a central cylinder 913 is provided between the extension 9162 of the tension bowl 916 and the lower tension cylinder 911, and the top end of the central cylinder 913 is used to support the track assembly.

Preferably, this embodiment is provided with mounting groove 931 on the lateral wall of base 93, and mounting groove 931 is inside sunken, and the inside hidden installation oil pipe 932 of mounting groove 931, oil pipe 932's top and track subassembly intercommunication have the lubrication action to the clearance between sinker 10 and the track subassembly 910, reduce the frictional resistance between sinker 10 and the track subassembly 910, improve the smoothness that the complete machine was woven. And set up oil pipe into hidden structure, reduce the occupation of oil pipe to needle section of thick bamboo inner space down, and then for base 93 and inside leg of falling socks provide sufficient space, guarantee that the fabric is level and smooth.

The double-needle-cylinder loom tensioning device provided by the embodiment sets the motion track of the sinker into a wave shape with two wave crests, so that in the process of rotating the lower needle cylinder for a circle, the sinker moves twice in the direction of the upper end and away from the central axis b, twice elastic yarn returning is completed, the elastic yarn is prevented from being excessively tensioned and breaking, and the elasticity of the fabric is ensured. The tensioning barrel is arranged to be of a split structure, so that parts can be maintained and replaced conveniently in the working and running process of the weaving machine, and the service life of the equipment is prolonged.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double needle cylinder loom overspeed device tensioner, double needle cylinder loom includes support frame (1), goes up needle cylinder (2) and lower needle cylinder (3), the bottom of going up needle cylinder (2) and lower needle cylinder (3) is connected through transmission shaft (7), transmission shaft (7) drive go up needle cylinder (2) and lower needle cylinder (3) coaxial rotation, its characterized in that, in needle cylinder (3) inside tensioning device (9) down sets up track subassembly (910) in tensioning device (9), track subassembly (910) are used for guiding the removal of sinker (10), contain at least one crest on the track of track subassembly (910).

2. Double-cylinder loom tensioning device according to claim 1, characterized in that the rail assembly (910) comprises an upper cover (914) and a lower cover (915), a gap being provided between the upper cover (914) and the lower cover (915), the gap forming a rail guiding the movement of the sinker (10).

3. Double-cylinder loom tensioning device according to claim 2, characterized in that the bottom surface of the upper cover body (914) and the top surface of the lower cover body (915) are both provided with an irregular wave-shaped structure, and in that the top surface of the lower cover body (915) is provided with projections (9151) and recesses (9152), said projections (9151) and recesses (9152) being arranged alternately.

4. Double-cylinder loom tensioning device according to claim 3, characterized in that the region of the underside of the upper cover (914) corresponding to the raised portion (9151) of the lower cover (915) is provided as a concave structure, and the region of the underside of the upper cover (914) corresponding to the recessed portion (9152) of the lower cover (915) is provided as a convex structure.

5. Double-cylinder loom tensioning device according to claim 1, characterized in that the tensioning device (9) comprises a base (93), a drop tube (92) arranged inside the base (93) and a tensioning assembly (91) at the top end of the base (93), the drop tube (92) and the tensioning assembly (91) being arranged coaxially.

6. Double-cylinder loom tensioning device according to claim 5, characterized in that the tensioning assembly (91) comprises a lower tensioning cylinder (911), an upper tensioning cylinder (912), a tensioning bowl (916) and a rail assembly (910) guiding the movement of the sinker (10), the lower tensioning cylinder (911) being arranged on top of the base (93) and being fixedly connected to the base (93).

7. Double-cylinder loom tensioning device according to claim 6, characterized in that the inner surface of the upper tensioning cylinder (912) close to the central axis b is provided as a curved surface and the outer surface of the track assembly (910) remote from the central axis b is also provided as a curved surface, between which a mounting for the sinker (10) is formed.

8. Double-cylinder loom tensioning device according to claim 6, characterized in that the tensioning bowl (916) is arranged close to the central axis b, the tensioning bowl (916) comprising a top bowl (9161) and a bottom extension (9162), the bowl (9161) being arranged radially, matching the shape of the upper cover (914), the extension (9162) being arranged as a cylindrical structure.

9. Double-cylinder loom tensioning device according to claim 5, characterized in that a mounting groove (931) is provided on the outer side wall of the base (93), said mounting groove (931) being recessed inwards, the mounting groove (931) being internally concealed with a mounting oil pipe (932), the top of the oil pipe (932) being in communication with the track assembly.

10. Double-cylinder loom tensioning device according to claim 5, characterized in that the drop tube (92) is internally provided as a mirror surface.