CN110512347B - Weaving method of double-needle-cylinder loom - Google Patents

Abstract

The invention provides a knitting method of a double-needle-cylinder loom, the double-needle-cylinder loom comprises a support frame, an upper needle cylinder, a lower needle cylinder, a fixing device positioned in the needle cylinder, a detection device positioned on the side surface of the needle cylinder, a thread feeding device and a scissors device, and the knitting method comprises the following steps: the method comprises the following steps that firstly, a knitting program is set according to the requirements of knitting products, a main control system drives an upper needle cylinder and a lower needle cylinder to synchronously rotate, and knitting crochet hooks do reciprocating motion between axial grooves of the upper needle cylinder and the lower needle cylinder to knit fabrics; secondly, according to a preset program, when the knitting time reaches a first preset time, the main control system controls the fixing device to start to alternately operate in a first state and a second state; and step three, when the knitting time reaches second preset time, stopping the rotation of the upper needle cylinder and the lower needle cylinder, controlling the loom to finish the knitting program by the main control system, and enabling the fixing device to enter a third state. The whole weaving procedure flow is smooth, and the whole working efficiency of the weaving machine is improved.

Description

Weaving method of double-needle-cylinder loom

Technical Field

The invention relates to the technical field of knitting, in particular to a knitting method of a double-needle-cylinder loom.

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 footing that rests on the ground and supports the lower needle cylinder so that it can rotate about its own axis, which is oriented vertically. The footing also supports, by means of a column that stands vertically from the footing, an upper needle cylinder, which is arranged above and coaxially with respect to a lower needle cylinder.

Patent application No. 201280054689.5 in the prior art discloses a double-cylinder circular machine for manufacturing knitted hosiery items, which comprises means for rotating an arm with respect to a cylinder about the axis of a main shaft, providing the transition of an upper needle cylinder from an active position, in which it is arranged coaxially with a lower needle cylinder, to an inactive position, in which its axis is spaced laterally with respect to the axis of the lower needle cylinder, and vice versa, the rotating means being constituted by the same main motor.

The double-needle-cylinder weaving machine in the prior art is easy to have the phenomena that the abnormal working state of a weaving crochet hook can not be detected by a detection device in the weaving process, the fixation to fabrics is not good, elastic yarns are easy to break and the like in the weaving process, and the quality of the fabrics is finally influenced.

Disclosure of Invention

In view of the above, the present invention is directed to a knitting method of a double-cylinder loom, so as to solve the problems in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a knitting method of a double-needle-cylinder loom, which comprises a support frame, an upper needle cylinder, a lower needle cylinder, a fixing device positioned inside the needle cylinder, a detection device positioned on the side surface of the needle cylinder, a thread feeding device and a scissors device, and comprises the following steps:

the method comprises the following steps that firstly, a knitting program is set according to the requirements of knitting products, a main control system drives an upper needle cylinder and a lower needle cylinder to synchronously rotate, and knitting crochet hooks do reciprocating motion between axial grooves of the upper needle cylinder and the lower needle cylinder to knit fabrics;

secondly, according to a preset program, when the knitting time reaches a first preset time, the main control system controls the fixing device to start to alternately operate in a first state and a second state;

and step three, when the knitting time reaches second preset time, stopping the rotation of the upper needle cylinder and the lower needle cylinder, controlling the loom to finish the knitting program by the main control system, and enabling the fixing device to enter a third state.

Further, the first preset time and the second preset time are set according to the total length of the finished fabric.

Further, the fixing device in the second step comprises a drawing device and a tensioning device, the drawing device comprises a first cutting sleeve and a second cutting sleeve, the first state is that the second cutting sleeve compresses the fabric, and the second state is that the first cutting sleeve compresses the fabric.

Further, the first state is: the four sliding blocks and the four sliding rods in the traction device rotate along with the upper needle cylinder, the sliding block connected with the first sliding rod rotates to the position of the wave crest part, the sliding block connected with the second sliding rod rotates to the position of the wave trough part, and the fabric is pressed on the top of the tensioning bowl in the tensioning device through the second clamping sleeve in the traction device.

Further, the second state is: the four sliding blocks and the four sliding rods in the traction device rotate along with the upper needle cylinder, the sliding block connected with the second sliding rod rotates to the position of the wave crest part, the sliding block connected with the first sliding rod rotates to the position of the wave trough part, and the fabric is pressed on the top of the tensioning bowl in the tensioning device through the first clamping sleeve in the traction device.

Further, the third state of the fixing device is that the fixing device stops running, and the specific process includes: the main control system controls the traction device to move upwards relative to the upper needle cylinder until the traction device is separated from the tensioning device.

And further, the third step also comprises that the master control system controls the scissors device to move towards the direction close to the needle cylinder, the driving assembly drives the scissors assembly to cut off the yarn between the yarn feeding device and the knitting crochet needle, the driving assembly drives the scissors assembly to reset to finish knitting, and the loom enters a transferring and turning stitch procedure.

Furthermore, the driving assembly is a single-cylinder driving assembly with bidirectional ventilation, wherein the scissors assembly is driven to cut yarns by positive ventilation, and the scissors assembly is driven to reset by negative ventilation.

Furthermore, the first state further comprises that the sliding block connected with the first sliding rod drives the first sliding rod and the first clamping sleeve to move upwards, and meanwhile, the sliding block connected with the second sliding rod drives the second sliding rod and the second clamping sleeve to move downwards.

Furthermore, the second state further comprises that the sliding block connected with the second sliding rod drives the second sliding rod and the second clamping sleeve to move upwards, and meanwhile, the sliding block connected with the first sliding rod drives the first sliding rod and the first clamping sleeve to move downwards.

The knitting method of the double-needle-cylinder loom provided by the invention has the advantages that the whole knitting program flow is smooth, whether the knitting crochet hook works abnormally can be quickly detected through improving the detection device, the wear rates of the knitting crochet hook and the probe are reduced, and the integral working efficiency of the loom is improved. The fixing device is improved, different parts of the fabric are compressed alternately through the clamping sleeves with different sizes, the fabric can be well fixed in the weaving process, meanwhile, the risk of breakage of the stretch yarn is reduced, and the product quality is guaranteed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. 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 drawing of a double cylinder loom draft apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a double cylinder loom draw apparatus according to an embodiment of the present invention;

FIG. 4 is an exploded view of a double cylinder loom draft gear according to an embodiment of the present invention;

FIG. 5 is a partial enlarged view of portion A of FIG. 1;

FIG. 6 is a partial enlarged view of the portion B in FIG. 2;

FIG. 7 is a schematic view of a slider structure according to an embodiment of the present invention;

fig. 8 is a schematic view of the first ferrule and the second ferrule cooperating with each other when the pulling assembly is in the first state according to the embodiment of the present invention;

fig. 9 is a schematic view of the first ferrule and the second ferrule cooperating with each other when the pulling assembly is in the second state according to the embodiment of the present invention;

FIG. 10 is a schematic view of the structure of a tensioning device of a double-cylinder loom according to an embodiment of the present invention;

FIG. 11 is a schematic view of the track assembly of the tensioning device of the double-cylinder loom according to the embodiment of the present invention;

FIG. 12 is a schematic view of the explosive structure of the tensioning device of the double-needle loom according to the embodiment of the present invention;

FIG. 13 is a schematic view of a sinker structure of a double-cylinder knitting machine according to an embodiment of the present invention;

FIG. 14 is an enlarged view of a portion of the portion C of FIG. 11;

FIG. 15 is a schematic view of the structure of a thread feeding device of a double-cylinder loom according to an embodiment of the present invention;

FIG. 16 is a schematic structural view of a thread feeding assembly of the double-cylinder loom in a retracted state according to the embodiment of the present invention;

FIG. 17 is a schematic view showing the internal structure of the cylinder in the retracted state of the thread feeding assembly of the double-cylinder loom in accordance with the embodiment of the present invention;

FIG. 18 is a schematic structural view of a thread feeding assembly of the double-cylinder loom in an extended state according to the embodiment of the present invention;

FIG. 19 is a schematic view showing the internal structure of the cylinder in an extended state of the thread feeding assembly of the double-cylinder loom in accordance with the embodiment of the present invention;

FIG. 20 is a schematic structural diagram of a double-cylinder loom detecting device according to an embodiment of the present invention;

FIG. 21 is a schematic structural view of a scissors assembly of the double-cylinder loom according to the embodiment of the present invention;

FIG. 22 is a schematic view of a scissors assembly and a driving assembly of the double-cylinder knitting machine according to the embodiment of the present invention;

FIG. 23 is a schematic view of the internal structure of the cylinder of the scissors assembly of the double-cylinder loom according to the embodiment of the present invention;

FIG. 24 is a schematic view of the structure of the stitch forming mechanism outside the lower cylinder of the double-cylinder loom in accordance with the embodiment of the present invention;

FIG. 25 is a schematic exploded view of a corner module of a double-cylinder knitting machine according to an embodiment of the present invention;

FIG. 26 is a schematic view of a double-cylinder loom according to an embodiment of the present invention from another perspective.

Description of reference numerals:

1-support frame, 2-upper needle cylinder, 3-lower needle cylinder, 4-base, 5-upper needle cylinder mounting plate, 6-lower needle cylinder mounting plate, 7-transmission shaft, 8-pulling device, 80-central tube, 81-pulling component, 811-first cutting sleeve, 812-second cutting sleeve, 8111-boss, 8112-first sleeve, 8113-first connecting hole, 8121-platform, 8122-second sleeve, 8123-second connecting hole, 82-fixing component, 821, 822-fixing cylinder, 8211-sliding groove, 8212-sliding block, 8213-connecting part, 8214-bending part, 8215-mounting groove, 8216-bearing, 8217-first opening, 8218-second opening, 83-sliding component, 831-first sliding rod, 832-second slide bar, 833-catch hole, 9-tensioning device, 91-tensioning device, 910-rail device, 911-lower tensioning cylinder, 912-upper tensioning cylinder, 913-central cylinder, 914-upper cover, 915-lower cover, 9151-bulge, 9152-depression, 916-tensioning bowl, 9161-bowl, 9162-extension, 92-drop tube, 93-base, 931-mounting groove, 932-oil tube, 10-fixing sleeve, 11-fixing rod, 12-rail, 121-crest, 122-trough, 100-fabric, 13-sinker, 131-arc body, 132-bulge, 14-looping mechanism, 141-corner device, 142-selection device, 143-annular fixed plate, 144-edge, 145-outer edge, 18-detection device, 181-probe assembly, 182-fixed support, 183-probe, 184-connecting rotating shaft, 185-sensing device, 186-travel switch, 19-wire feeding device, 190-fixed plate, 191-wire feeding assembly, 192-transmission mechanism, 193-wire feeding structure, 1921-cylinder, 1922-worm, 1923-turbine, 1931-rocker, 1932-travel plate, 20-scissor device, 201-scissor assembly and 202-driving assembly

Detailed Description

It should be noted that 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 ly indicating 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, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination 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 embodiments with reference to the attached drawings.

As shown in fig. 1 and 26, the present embodiment provides a double-cylinder loom comprising a support frame 1, a cylinder, a fixing device located inside the cylinder, a detecting device 18 located on the side of the cylinder, a thread feeding device 19 and a scissors device 20. The needle cylinder comprises an upper needle cylinder 2 and a lower needle cylinder 3, and the supporting frame 1 comprises a base 4 for resting on the ground to play a supporting role, an upper needle cylinder mounting plate 5 and a lower needle cylinder mounting plate 6 which are positioned on the upper part of the base 4. The needle cylinder comprises an upper needle cylinder 2 and a lower needle cylinder 3, the position of the upper needle cylinder 2 close to the top end is connected with the bottom end of the lower needle cylinder 3 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.

As shown in fig. 2 to 9, the fixing device includes a pulling device 8 disposed inside the upper needle cylinder 2 and a tensioning device 9 disposed inside the lower needle cylinder 3, the pulling device 8 is used for pressing the fabric close to the edge onto the tensioning device 9 inside the lower needle cylinder 3 when the fabric is knitted, and the pulling device 8 is configured as a pressure type structure with a large ferrule and a small ferrule, that is, the fabric is pressed downward by the pulling device 8 through pressure. After a certain period of knitting, the drawing device 8 moves downwards relative to the upper needle cylinder 2, so that the bottoms of the large and small cutting sleeves press the part of the fabric close to the stitch against the tensioning device 9, and towards the end of knitting, the drawing device 8 moves upwards, leaves the tensioning device 9, and the fabric falls down to stop falling down the sock tube. Through fixing device's setting in this embodiment, guarantee the planarization of fabric product, especially to the longer fabric of length, promote product quality, the tractive device who adopts moreover compares with prior art, does not need manual operation, reduces the power consumption cost.

The invention further defines the specific structure of the pulling device, the pulling device 8 comprises a central tube 80, a pulling component 81 and a fixing component 82 arranged at the upper part, the central tube 80, the pulling component 81 and the fixing component 82 are coaxially arranged, and the pulling component 81 is sleeved outside the lower end of the central tube 80 and used for pressing the fabric. The pulling assembly 81 is fixedly connected with the fixing assembly 82 through a sliding assembly 83. The fixed component 82 is sleeved outside the upper end of the central tube 80 and used for driving the traction component 81 to move up and down, so that the power device can drive the upper needle cylinder 2 and the traction device 8 inside the upper needle cylinder to rotate synchronously, and the traction component 81 can move up and down.

The pulling assembly 81 comprises a first ferrule 811 and a second ferrule 812, the first ferrule 811 being disposed inside the second ferrule 812, and the first ferrule 811 having a length greater than the second ferrule 812. The sliding assembly 83 comprises a sliding rod which is divided into a first sliding rod 831 and a second sliding rod 832, the first sliding rod 831 drives the first clamping sleeve 811 to move up and down, the second sliding rod 832 drives the second clamping sleeve 812 to move up and down, so that the first clamping sleeve 811 and the second clamping sleeve 812 are driven by different sliding rods to move up and down relatively, the pressing of different parts of a fabric is realized, and the flatness of the whole quality of the fabric product is ensured. Preferably, the first sliding rod 831 and the second sliding rod 832 are alternately arranged and are respectively arranged in two numbers, so that the two first sliding rods 831 are opposite to each other, and the two second sliding rods 832 are opposite to each other, thereby facilitating the realization of the balance control of the first clamping sleeve 811 and the second clamping sleeve 812, ensuring the stable operation of the double-cylinder loom and reducing the failure rate of equipment.

Further, the first ferrule 811 comprises a boss 8111 located at the upper portion and a first sleeve 8112 located at the lower portion, and the boss 8111 is disposed at the top of the first sleeve 8112 and extends away from the upper syringe central axis a. A first connection hole 8113 is formed in the boss 8111, a first sliding rod 831 penetrates through the first connection hole 8113, and a fixing portion is arranged at one end, extending into the first connection hole 8113, of the first sliding rod 831 and used for fixedly connecting the first sliding rod 831 and the boss 8111 of the first sleeve 811.

Preferably, this embodiment is equipped with the rubber circle respectively in the bottom cover of first cutting ferrule and second cutting ferrule, compresses tightly the fabric by the rubber circle, compares with the tractive device of metal material, reduces the wearing and tearing to the fabric, improves product quality.

Further, the second ferrule 812 includes a platform 8121 and a second sleeve 8122, the platform 8121 is disposed on the top of the second sleeve 8122 and extends to approach the upper needle central axis a. And the boss 8111 diameter at the top of the first ferrule 811 is not larger than the inner diameter of the second sleeve 8121, the boss 8111 is located inside the region formed by the platform 8121 and the second sleeve 8122, so that the first ferrule 811 can move up and down inside the second ferrule 812. A second connecting hole 8123 is formed in the platform 8121, a second sliding rod 832 penetrates through the second connecting hole 8123, and a fixing portion is arranged at one end, extending into the second connecting hole 8123, of the second sliding rod 832 and used for fixedly connecting the second sliding rod with the platform of the second clamping sleeve.

Preferably, the sliding assembly 83 further includes a spring, the spring is respectively sleeved on the first sliding rod 831 and the second sliding rod 832, the first sliding rod 831 and the second sliding rod 832 are provided with a blocking hole 833, the blocking hole 833 is inserted into the blocking hole 833 through a plug to control the telescopic blocking position of the spring, the downward movement distance of the first cutting sleeve 811 and the second cutting sleeve 812 can be conveniently controlled according to the thickness of the fabric, and the application range is wide.

The fixing assembly 82 includes a fixing plate 822 and a fixing cylinder 821, and sliding grooves 8211 are provided at a position of the fixing cylinder 821 near an upper portion, and the number of the sliding grooves 8211 is equal to the number of the sliding rods. Preferably, the number of the sliding grooves 8211 is four. The fixed tray 822 is used for limiting the upward movement distance of the sliding block 8212 in the sliding groove 8211 and preventing the sliding block from being separated from the mounting groove. At spout 8211 internally mounted slider 8212, slider 8212's one end is to keeping away from last cylinder central axis a's direction protrusion, and slider 8212's the other end is connected with the slide bar, and slider 8212 highly is less than spout 8211's height for slider 8212 can slide from top to bottom in spout 8211 is inside, thereby realizes that slider 8212 drives the slide bar, drives first cutting ferrule 811 or second cutting ferrule 812 by the slide bar again and reciprocates, makes at the in-process of weaving, and first cutting ferrule and second cutting ferrule compress tightly the fabric in turn.

Further, the slider 8212 includes a connecting portion 8213 and a bending portion 8214, the bending portion 8214 is an L-shaped structure, one end of the L-shaped bending portion 8214 is connected to the connecting portion 8213, and the other end is parallel to the connecting portion 8213. An installation groove 8215 is formed between the connection portion 8213 and the bent portion 8214, and a bearing 8216 is installed in the installation groove 8215. A first opening 8217 is formed in the bent portion 8214, a second opening 8218 is formed in a portion, corresponding to the first opening 8217, of the connecting portion 8213, and the connecting shaft penetrates through the first opening 8217, a center hole of the bearing 8216 and the second opening 8218 to mount the bearing on the slider 8212, so that the bearing 8216 can rotate along the connecting shaft while moving up and down along with the slider 8212.

Furthermore, a third opening is further formed in the connecting portion 8213, the third opening is perpendicular to the second opening 8218, and the sliding rod penetrates through the third opening and is fixedly connected with the sliding block 8212, so that the sliding block 8212 drives the sliding rod to move up and down.

As part of the embodiment of the present invention, in this embodiment, a fixing sleeve 10 is further disposed on the upper portion of the upper syringe mounting plate 5, and the fixing sleeve 10 is sleeved on the outer portion of the upper syringe 2 near the upper end and disposed coaxially with the upper syringe 2. The fixing sleeve 10 is fixedly connected with the support frame 1 through a fixing rod 11. Further, the fixing sleeve 10 is sleeved outside the fixing component 82 of the pulling device 8, so that the fixing component 82 can rotate inside the fixing sleeve 10.

An annular rail 12 is provided at the tip end of the fixed sleeve 10, and a bearing 8216 in the slider 8212 abuts on the rail 12 and can roll along the rail 12. The rail 12 is provided with a wave-shaped structure, so that the sliding block 8212 can move up and down in the rolling process along the rail 12, and the first cutting sleeve or the second cutting sleeve is driven to move. Preferably, a pair of crest portions 121 and a pair of trough portions 122 are provided on the track 12, the crest portions 121 and the trough portions 122 are alternately arranged such that the two crest portions 121 are oppositely arranged in the radial direction of the fixed sleeve 10 and the two trough portions 122 are also oppositely arranged in the radial direction of the fixed sleeve 10. And a smooth transition is arranged between the crest part 121 and the trough part 122, so that a blocking phenomenon in the rotation process of the traction device is prevented, and the running stability of the equipment is improved.

As shown in fig. 10 to 14, the tensioning device 9 comprises a base 93, a hose 92 arranged 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 tensioning assembly 91 comprises a lower tensioning cylinder 911, an upper tensioning cylinder 912, a tensioning bowl 916 and a track assembly 910 for guiding the movement of the sinker 13. 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 13 between two curved surfaces, guarantees that sinker stable installation is inside tensioning unit 91. Further, the sinker 13 includes an arc body 131 and a protrusion 132, the tip of the arc body 131 is provided with a hook, the protrusion 132 is provided at a position of the arc body 131 near the bottom end, the arc body 131 is located between two curved surfaces of the track assembly 910 and the upper tensioning barrel 912, and the protrusion 132 is located in the track assembly 910.

The rail assembly 910 includes an upper cover 914 and a lower cover 915, and a gap is provided between the upper cover 914 and the lower cover 915, the gap accommodating the boss 132 of the sinker 13 therein, the gap forming a wave-shaped rail guiding the movement of the sinker 13. 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 protruding portion 132 of the sinker 13 reaches the peak position of the wavy track, the hook-shaped portion of the arc-shaped body 131 moves in the direction toward the upper end and away from the central axis b to drive the elastic yarn on the knitting crochet needle to move back, so that, in the process of rotating the lower needle cylinder 3 for one circle, the sinker 13 moves twice in the direction toward the upper end and away from the central axis b to complete the elastic yarn back-off twice, thereby avoiding the elastic yarn from being too tensioned and broken and ensuring the elasticity of the fabric.

Further, a tensioning bowl 916 is arranged close to the central axis b, and the top of the tensioning bowl 916 abuts against the bottom of said first or second ferrule 811, 812 when the fixture is in operation. The tensioning bowl 916 includes a top bowl portion 9161 and a bottom extension portion 9162, the bowl portion 9161 is radially configured to match the shape of the upper cover 914, and the extension portion 9162 is configured as 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 13 and the track subassembly 910, reduce the frictional resistance between sinker 13 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.

As part of the embodiment of the present invention, the fitting relationship between the tension device and the pulling device in the fixing device is described as follows:

firstly, during the weaving process of the loom, according to a predetermined program, after a certain period of time of weaving, the main control system controls the fixing device to start working while weaving, controls the pulling device 8 to start moving downwards relative to the upper needle cylinder until the sliding block in the pulling device 8 abuts on the annular track 12 of the fixing sleeve 10, and simultaneously, enables the bottom of the pulling component 81 to abut on the top of the tensioning component 91.

Secondly, in the process of rotating and knitting the upper needle cylinder 2, the four sliding blocks 8212 and the four sliding rods in the drawing device 8 rotate together with the upper needle cylinder 2, when the sliding block 8212 connected with the first sliding rod 831 rotates to the position of the wave crest 121 and the sliding block 8212 connected with the second sliding rod 832 rotates to the position of the wave trough 122, the first state is recorded, at the moment, the sliding block connected with the first sliding rod 831 drives the first sliding rod 831 and the first sleeve chuck 811 to move upwards, meanwhile, the sliding block connected with the second sliding rod 832 drives the second sliding rod 832 and the second sleeve chuck 812 to move downwards, the rubber ring at the bottom of the second sleeve chuck 812 compresses the fabric at the top of the tension bowl 916 in the tension device 9, and the second sleeve 812 drives the tension bowl 916 to rotate together with the drawing device 8, and the fabric is compressed by the second sleeve 812;

when the slider 8212 connected to the second sliding rod 832 rotates to the position of the wave crest 121 and the slider 8212 connected to the first sliding rod 831 rotates to the position of the wave trough 122, the second state is recorded, at this time, the slider 8212 connected to the second sliding rod 832 drives the second sliding rod 832 and the second ferrule 812 to move upwards, the slider connected to the first sliding rod 831 drives the first sliding rod 831 and the first ferrule 811 to move downwards, the rubber ring at the bottom of the first ferrule 811 presses the fabric on the top of the tension bowl 916 inside the tension device 9, and the first ferrule 811 drives the tension bowl 916 to rotate along with the traction device 8, and the first ferrule 811 presses the fabric.

Thirdly, according to a preset program, when the knitting work is finished, the control device controls the traction device 8 to move upwards, and the first cutting sleeve or the second cutting sleeve is separated from the tensioning bowl.

Realize first cutting ferrule and second cutting ferrule from this and compress tightly the different positions of fabric on overspeed device tensioner's tensioning bowl in turn, further guarantee the roughness for the line is clear, improves whole aesthetic feeling. The rubber ring is sleeved at the bottom of the first clamping sleeve and the bottom of the second clamping sleeve, and the fabric is tightly pressed on the hard tensioning device through the rubber ring, so that the friction to the fabric is reduced, and the quality of the fabric product is improved. And through improving the structure of the tensioning device, in the process that the lower needle cylinder rotates for a circle, the sinker moves towards the upper end and away from the direction of the central axis b twice, so that twice elastic yarn ring retreating is completed, the elastic yarn is prevented from being too tensioned and broken, and the elasticity of the fabric is further ensured.

As shown in fig. 1 and 15 to 19, the present invention further provides a thread feeding device 19 of a double-cylinder loom as a part of the embodiment of the present invention, wherein the thread feeding device 19 is provided on the side surfaces of the upper cylinder 2 and the lower cylinder 3 for feeding a yarn for knitting to knitting crochet needles. The wire feeding device 19 includes a wire feeding unit 191 and a fixing plate 190 for fixing the wire feeding unit 191. Preferably, the number of the thread feeding components 191 is set according to the number of the yarns used in the knitting process, and may be plural.

The wire feeding assembly 191 is set to be in a way that an airflow drives a worm to drive a worm wheel to drive and drive the stroke plate of the wire feeding assembly 19 to do fan-shaped motion, and compared with the structure that the stroke plate does linear motion in the prior art, the wire feeding assembly can effectively avoid mutual collision between the stroke plates.

Further, the wire feeding assembly 191 comprises a transmission mechanism 192 and a wire feeding structure 193, the transmission mechanism 192 is provided as a worm and gear structure driven by an air cylinder, specifically, the transmission mechanism 192 comprises an air cylinder 1921, a worm wheel 1923 and a worm 1922, and the worm wheel 1923 is connected with a stroke plate 1932 of the wire feeding structure 193 through a rocker arm 1931.

An accommodating cavity for accommodating the worm 1922 is formed in the air cylinder 1921, the worm 1922 in the accommodating cavity is driven to move by air flow, the worm 1922 drives the worm wheel 1923 to rotate, and the connecting piece is driven to rotate by rotation of the worm wheel 1923. When airflow acts on the left end of the worm 1922, the worm 1922 is driven to move linearly to the right, the worm 1922 drives the worm wheel 1923 to rotate anticlockwise, the rocker arm 1931 fixedly connected with the worm wheel 1923 rotates anticlockwise, and the stroke plate 1932 is driven to rotate until the stroke plate 1932 extends out completely, so that wire feeding is achieved; when the airflow acts on the right end of the worm 1922, the worm 1922 is driven to move linearly leftwards, the worm 1922 drives the worm wheel 1923 to rotate clockwise, the rocker arm 1931 fixedly connected with the worm wheel 1923 rotates clockwise, and the stroke plate 1932 is driven to rotate to the retraction state. In a motion period of the worm gear, the motion track of the stroke plate 1932 is a sector plane, so that collision between adjacent stroke plates is effectively avoided, the running stability of the loom is improved, and the failure rate is reduced.

As shown in fig. 20, the detecting device 18 is used for detecting whether the knitting crochet hook is in failure, so as to facilitate maintenance and replacement of the knitting crochet hook in time and improve production efficiency.

Further, the detecting device 18 includes a probe assembly 181 and a fixing support 182, and the probe assembly 181 is fixed on the side surface of the syringe through the fixing support 182. The probe assembly 181 is installed on the upper portion of the fixed support 182, the probe assembly 181 includes a probe 183, a connecting rotating shaft 184 and a sensing device 185, the probe 183 is installed on the fixed support 182 through the connecting rotating shaft 184, the tip of the probe 183 extends out to sense whether the knitting crochet needle works abnormally, and one end of the probe 183 away from the tip abuts against a travel switch 186 of the sensing device 185. When the knitting crochet needle works abnormally, and a coil on the knitting crochet needle is accumulated, the tip of the probe 183 touches the coil, so that the probe 193 rotates by taking the connecting rotating shaft 184 as the center, and meanwhile, one end, far away from the tip, of the probe 183 touches the travel switch 186 of the sensing device 185, so that the sensing device 185 sends out an alarm prompt to prompt a maintenance worker to overhaul and replace the knitting crochet needle.

Specifically, when the loom starts to weave, the master control system controls the cylinder to eject the probe 183, and monitors a weaving crochet needle; after weaving is finished, the main control system controls the air cylinder to withdraw the probe 183, and the next process of the weaving machine is not influenced.

The detection device provided by the embodiment is different from a test method in the prior art in which the probe directly touches the knitting crochet hook, and the probe touches the coil to sense whether the knitting crochet hook works abnormally, so that the wear rates of the knitting crochet hook and the probe are reduced, and the overall working efficiency of the loom is improved.

As shown in fig. 21 to 23, the scissors device 20 is disposed on the side of the needle cylinder and near the thread feeding device 19, the scissors device 20 includes a scissors assembly 201 and a driving assembly 202, and the driving assembly 202 drives the scissors assembly to cut or reset the thread. Further, the driving assembly 202 is configured as a bidirectional ventilation single cylinder driving assembly, wherein the forward ventilation drives the scissors assembly 201 to cut the yarn, and the reverse ventilation drives the scissors assembly 201 to reset, thereby achieving normal and stable operation of the scissors device 20. Compare the double-cylinder drive arrangement who resets by a cylinder drive trimming, another cylinder drive among the prior art, the scissors device of this embodiment has avoided appearing two cylinder opposite vertex and has made the phenomenon that the scissors card is pause, improves the smoothness nature of loom work.

As shown in fig. 1 and fig. 24 to 25, the present embodiment further provides a looping mechanism 14, wherein the looping mechanism 14 is wrapped outside the upper needle cylinder 2 and the lower needle cylinder 3 and used for guiding the movement of the knitting crochet needle and the reciprocating movement between the upper needle cylinder and the lower needle cylinder.

Taking the following example of the knitting mechanism 14 outside the needle cylinder, said knitting mechanism comprises an angular assembly 141 and a selection device 142. The corner assembly 141 is mounted on the annular fixing plate 143, the corner assembly 141 includes a plurality of corners 144, and a gap is formed between the corners 144, and the gap forms a track for guiding the motion of the slider. The slider reciprocates between different tracks and drives the knitting crochet needle to reciprocate between the upper needle cylinder 2 and the lower needle cylinder 3.

The outer edge 145 of the edge 144 is set to be a spiral nonlinear curved surface, so that the friction force between the guide pin sheet and the edge is reduced, the wear rate of the edge assembly is reduced, and the weaving efficiency is improved.

The nonlinear curved surface is a quadric surface, or a rotating curved surface or the combination of the quadric surface and the rotating curved surface. The rotating curved surface is a curved surface formed by rotating a plane curve around a fixed straight line on the plane for a circle, the quadric surface is a curved surface represented by a ternary quadratic equation and comprises a cylindrical surface, an elliptic cylindrical surface, a hyperbolic cylindrical surface, a parabolic cylindrical surface, a conical surface, an elliptic conical surface, a spherical surface, an ellipsoid surface, an elliptic paraboloid, a single-leaf hyperbolic surface, a double-leaf hyperbolic surface and a hyperbolic paraboloid, and the side wall surface of the triangular block at least comprises one of the above curved surface forms when the surface is the quadric surface. Compared with the surface with the projection line being circular arc or straight line on the plane, the slider can move more stably and smoothly with high speed.

The selection device 142 is arranged on the annular fixing plate 143, and the pushing in and the withdrawing from the knife are controlled by the selection device 142, so that the slider is transferred to and fro between different tracks, and the knitting crochet needle is guided to be transferred from one needle cylinder to the other needle cylinder.

Specifically, the selection device 142 is set to be a cylinder driving structure controlled by a solenoid valve, and the knife switch is driven to be pushed in and withdrawn by the cylinder driving structure.

The present invention also provides, as part of the embodiments of the present invention, a knitting method of a double-cylinder loom,

step 1: firstly, setting a knitting program according to the requirements of knitting products, driving an upper needle cylinder 2 and a lower needle cylinder 3 to synchronously rotate by a main control system after a loom starts to operate, driving a slider and a slider by a power device to drive a knitting crochet hook to do reciprocating motion between axial grooves of the upper needle cylinder 2 and the lower needle cylinder 3 so as to knit fabrics, and simultaneously ejecting a detection device by a driving device to reach a detection part so as to realize synchronous monitoring in the knitting process;

further, the knitting crochet needle performs the reciprocating motion between the upper needle cylinder 2 and the lower needle cylinder 3 by the following processes:

first, when the crochet hook is transferred to the upper needle cylinder by the lower needle cylinder by system control, selecting arrangement 142 pushes the lower portion plug-in strip of lower needle cylinder 3, and the track that 3 pivoted in-process sliders of lower needle cylinder 3 formed along the edges and corners subassembly moves, and when the slider in the lower needle cylinder moved the position to lower portion plug-in strip, because the effect slider that blocks of lower portion plug-in strip can only move along upper portion track, realized the orbital transfer of slider from this, drive simultaneously and weave the crochet hook and transfer to the upper needle cylinder from the lower needle cylinder.

When the crochet hook is transferred from the upper needle cylinder to the lower needle cylinder under the system control, the upper switch blade of the upper needle cylinder 2 is pushed by the selection device 142, the guide needle rotates along the track formed by the edge and corner component in the rotating process of the upper needle cylinder, and when the guide needle in the upper needle cylinder rotates to the position of the upper switch blade, the guide needle can only move along the lower track due to the blocking effect of the upper switch blade, thereby realizing the transfer of the guide needle track, and simultaneously driving the crochet hook to be transferred from the upper needle cylinder to the lower needle cylinder.

Step 2: according to a preset program, when the knitting time reaches a first preset time, the main control system controls the fixing device to alternately operate in a first state and a second state, and simultaneously, the knitting crochet needle continuously reciprocates between the axial grooves of the upper needle cylinder 2 and the lower needle cylinder 3 to knit.

Further, the first state is: the four sliders 8212 and the four sliding rods of the drawing device 8 rotate with the upper needle cylinder 2, the slider 8212 connected to the first sliding rod 831 rotates to the position of the wave crest 121, the slider 8212 connected to the second sliding rod 832 rotates to the position of the wave trough 122, and the fabric is pressed by the second ferrule 812 of the drawing device 8 on top of the tensioning bowl 916 inside the tensioning device 9.

The second state is: the four sliders 8212 and the four sliding rods of the drawing device 8 rotate with the upper needle cylinder 2, the slider connected to the second sliding rod 832 rotates to the position of the wave crest 121, the slider 8212 connected to the first sliding rod 831 rotates to the position of the wave trough 122, the fabric is pressed by the first ferrule 811 of the drawing device 8 on top of the tensioning bowl 916 inside the tensioning device 9.

And step 3: when the knitting time reaches the second preset time, the upper needle cylinder 2 and the lower needle cylinder 3 stop rotating, the main control system controls the loom to finish the knitting program, and the fixing device enters a third state.

Further, the third state of the fixing device is that the fixing device stops running, and the specific process includes: the master control system controls the movement of the drawing means upwards with respect to the upper needle cylinder 2 until the drawing means 8 disengage from the tensioning means 9.

Further, the main control system controls the scissors device 20 to move towards the direction close to the needle cylinder, the driving assembly 202 drives the scissors assembly 201 to cut off the yarn between the yarn feeding device 19 and the knitting crochet needle, the driving assembly 202 drives the scissors assembly 201 to reset, knitting is completed, and the loom enters a transferring and turning stitch procedure.

Further, the first preset time and the second preset time can be set according to the total length of the finished fabric. Preferably, the first predetermined time is reached when the length of knitted fabric droops to the extension 9162 of the tensioning bowl 916. The second preset time is the second preset time when the length of the woven fabric reaches the total length of the finished fabric.

The knitting method of the double-needle-cylinder loom provided by the embodiment enables the whole knitting procedure to be smooth, can quickly detect whether the knitting crochet hook works abnormally or not through the improvement of the detection device, reduces the wear rate of the knitting crochet hook and the probe, and improves the whole working efficiency of the loom. The fixing device is improved, different parts of the fabric are compressed alternately through the clamping sleeves with different sizes, the fabric can be well fixed in the weaving process, meanwhile, the risk of breakage of the stretch yarn is reduced, and the product quality is guaranteed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. A knitting method of a double-cylinder loom comprising a support frame (1), an upper cylinder (2), a lower cylinder (3), fixing means inside the cylinders and detecting means (18) on the lateral surfaces of the cylinders, thread feeding means (19) and scissors means (20), characterized in that it comprises:

the method comprises the following steps that firstly, a knitting program is set according to the requirements of knitting products, a main control system drives an upper needle cylinder (2) and a lower needle cylinder (3) to synchronously rotate, and knitting crochet hooks do reciprocating motion between axial grooves of the upper needle cylinder (2) and the lower needle cylinder (3) to knit fabrics;

secondly, according to a preset program, when the knitting time reaches a first preset time, the main control system controls the fixing device to start to alternately operate in a first state and a second state;

the fixing device in the second step comprises a drawing device (8) and a tensioning device (9), the drawing device (8) comprises a first cutting sleeve (811) and a second cutting sleeve (812), the first state is that the second cutting sleeve (812) presses the fabric, the second state is that the first cutting sleeve (811) presses the fabric,

step three, when the knitting time reaches second preset time, the upper needle cylinder (2) and the lower needle cylinder (3) stop rotating, the main control system controls the loom to finish the knitting procedure, and the fixing device enters a third state;

the third state of the fixing device is that the fixing device stops running.

2. The knitting method of a double-cylinder loom according to claim 1, characterized in that said first preset time and said second preset time are set according to the total length of the finished fabric.

3. Method for knitting by a double-cylinder loom according to claim 1, characterized in that said first state is: four sliders (8212) and four sliding rods in the pulling device (8) rotate along with the upper needle cylinder (2), the slider (8212) connected with the first sliding rod (831) rotates to the position of the crest portion (121), the slider (8212) connected with the second sliding rod (832) rotates to the position of the trough portion (122), and the fabric is pressed on the top of the tensioning bowl (916) in the tensioning device (9) by a second clamping sleeve (812) in the pulling device (8).

4. Method for knitting by a double-cylinder loom according to claim 1, characterized in that said second state is: four sliders (8212) and four sliding rods in the pulling device (8) rotate together with the upper needle cylinder (2), the slider connected with the second sliding rod (832) rotates to the position of the crest portion (121), the slider (8212) connected with the first sliding rod (831) rotates to the position of the trough portion (122), and the fabric is pressed on the top of the tension bowl (916) inside the tension device (9) by a first ferrule (811) in the pulling device (8).

5. The knitting method of a double-cylinder loom according to claim 1, characterized in that the third state of the holding device is a stop of the holding device, and the specific process comprises: the main control system controls the traction device (8) to move upwards relative to the upper needle cylinder (2) until the traction device (8) is separated from the tension device (9).

6. The knitting method of the double-cylinder loom according to claim 1, characterized in that the third step further comprises the main control system controlling the scissors device (20) to move towards the direction close to the cylinder, the driving assembly (202) drives the scissors assembly (201) to cut the yarn between the yarn feeding device (19) and the knitting crochet hook, the driving assembly (202) drives the scissors assembly (201) to reset, knitting is completed, and the loom enters the transferring and turning stitch procedure.

7. Method for knitting with a double-cylinder loom according to claim 6, characterized in that the drive assembly (202) is provided as a double-vented single-cylinder drive assembly, wherein the scissors assembly (201) is driven by positive ventilation to cut the yarn and the scissors assembly (201) is driven by negative ventilation to return.

8. The knitting method of the double-cylinder loom according to claim 3, characterized in that the first state further comprises the slide block connected with the first slide rod (831) moving the first slide rod (831) and the first ferrule (811) upward, and the slide block connected with the second slide rod (832) moving the second slide rod (832) and the second ferrule (812) downward.

9. The method of claim 4, wherein the second state further comprises the slide block connected to the second slide rod (832) moving the second slide rod (832) and the second ferrule (812) upward, and the slide block connected to the first slide rod (831) moving the first slide rod (831) and the first ferrule (811) downward.

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