CN110923933B - Fabric pull-down device for computerized flat knitting machine - Google Patents
Fabric pull-down device for computerized flat knitting machine Download PDFInfo
- Publication number
- CN110923933B CN110923933B CN201911257989.3A CN201911257989A CN110923933B CN 110923933 B CN110923933 B CN 110923933B CN 201911257989 A CN201911257989 A CN 201911257989A CN 110923933 B CN110923933 B CN 110923933B
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- claw
- base
- upper shield
- rod
- knitting machine
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- 239000004744 fabric Substances 0.000 title claims abstract description 52
- 238000009940 knitting Methods 0.000 title claims abstract description 24
- 210000000078 claw Anatomy 0.000 claims abstract description 84
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 3
- 238000007792 addition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/88—Take-up or draw-off devices for knitting products
- D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Abstract
The invention relates to a fabric pull-down device for a computerized flat knitting machine, which is arranged below a front needle bed and a rear needle bed of the computerized flat knitting machine in pairs, wherein a catch claw is provided with a needle for hooking fabrics, and a base is fixedly arranged on the computerized flat knitting machine; the upper shield is arranged above the base, and a slotted hole capable of exposing a needle on the catching claw is formed in the front side surface of the upper shield; a catch claw is provided with a driving motor, the driving motor is arranged on the base, and in the process that the driving motor drives the catch claw to descend, the catch claw inclines towards the front side surface close to the upper shield and needles for hooking fabrics are exposed from the slotted holes. Each catching claw is independently controlled by a driving motor, and the lifting of the catching claws can be determined according to the characteristics of the fabrics, so that the quality of the fabrics is higher; the pull-down device is more stable than the pull force of a common rotary roller, and when the front needle bed and the rear needle bed respectively weave cloth pieces, the pull-down device respectively pulls the front cloth piece and the rear cloth piece downwards so that the pull force of the two cloth pieces is the same.
Description
Technical Field
The invention relates to the field of computerized flat knitting machines, in particular to a fabric pull-down device for a computerized flat knitting machine.
Background
A fabric pulling-down device for pulling down a fabric hanging down from a tooth portion formed between a front needle bed and a back needle bed of a flat knitting machine, for example, patent publication No. CN106192187B discloses a pulling-down device for a fabric, in which a catching and pulling-down mechanism is a means for driving a pulling-down cam to rotate in a specific direction to move a catching member up and down to pull down the fabric, that is, a means for rotating a roller, but there is a disadvantage that a pulling force generated by the rotating roller is unstable, for example, when the front and back needle beds respectively knit fabric pieces, the pulling force of the rotating roller is affected by sliding friction between the fabric pieces to make the pulling force uneven to make different lengths of the fabric pieces, and therefore, improvement and optimization of the existing pulling-down device are necessary.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the fabric pull-down device for the computerized flat knitting machine, which has reasonable structural design, can independently control each catching claw and has stable pulling force.
The invention solves the problems by adopting the following technical scheme: a fabric drop-down device for computerized flat knitting machine arranges in pairs in the below of front needle bed and back needle bed of flat knitting machine, fabric drop-down device includes base, last guard shield and a plurality of catch claw, be provided with the needle that is used for hooking the fabric on the catch claw, its characterized in that: the device also comprises a driving motor for driving the catching claw to move up and down; the base is fixedly arranged on the flat knitting machine; the upper shield is arranged above the base, and a slotted hole capable of exposing a needle on the catching claw is formed in the front side surface of the upper shield; a catch claw is provided with a driving motor, the driving motor is arranged on the base, and in the process that the driving motor drives the catch claw to descend, the catch claw inclines towards the front side surface close to the upper shield, and needles for hooking fabrics are exposed from the slotted holes.
Preferably, a catch pawl is provided with a pawl base; the catching claw is hinged to the upper end of the claw base, and the lower end of the claw base is connected with a screw rod sliding block; the output end of the driving motor is provided with a vertical lead screw; the screw rod sliding block is arranged on the screw rod, and the screw rod sliding block are in transmission connection. The claw base is driven to move up and down in a screw transmission mode, and the device has the advantages of stable movement and high precision.
Preferably, a counterweight is arranged on one side of the claw base.
Preferably, a tilting rod is arranged on one side of the capturing claw; the tilting rod is vertically arranged, the upper part of the tilting rod is fixedly connected with the capturing claw, and the tail part of the tilting rod is tilted in a direction away from the front side surface of the upper shield.
Preferably, the one tilting lever is provided with a tilting lever top plate, the tilting lever top plate is arranged on the base and acts on the tail of the tilting lever, and when the capturing claw rises to a certain height, the tilting lever top plate abuts against the tail of the tilting lever, so that the tail of the tilting lever moves in a direction close to the front side surface of the upper shield, namely, the capturing claw is driven to rotate in a direction far away from the front side surface of the upper shield, and the capturing claw is completely positioned in the upper shield.
Preferably, the one tilting rod is provided with a push rod electromagnet, the push rod electromagnet is arranged on the base and acts on the tail of the tilting rod, and when the capturing claw rises to a certain height, the push rod of the push rod electromagnet stretches out to lean against the tail of the tilting rod, so that the tail of the tilting rod moves in the direction close to the front side surface of the upper shield, namely, the capturing claw is driven to rotate in the direction away from the front side surface of the upper shield, and the capturing claw is completely positioned in the upper shield.
Preferably, a pair of fabric pulldown devices are installed below the front needle bed and the rear needle bed of the flat knitting machine in such a manner that the front sides of the upper shields of the two are opposite to each other, and a vertical passage of fabric is formed between the front sides of the two upper shields.
Preferably, the base is also provided with a rear shield, the upper shield is in an inverted J shape, and the upper shield is connected with the top of the rear shield.
Preferably, the warping rod is divided into an upper part, a middle part and a tail part, wherein the joint of the middle part and the tail part adopts arc section transition, and correspondingly, the front end surface of the top plate of the warping rod is an arc surface; the front end face of the warping rod top plate is used for propping against the tail of the warping rod, and the arc surface is designed to enable the warping rod top plate to smoothly and without interference to prop against the tail of the warping rod in the rising process of the warping rod.
Preferably, the driving motor is a servo motor.
In the invention, each catching claw is independently controlled by a driving motor, the upward and downward movement of the catching claws is controlled by the transmission of the screw rod, and when the catching claws rise to a certain height, the tilting rod is pressed by the tilting rod top plate or the push rod electromagnet, so that the catching claws enter the upper shield to stop working, and the yarn hooking is prevented.
Compared with the prior art, the invention has the following advantages and effects: each catching claw is independently controlled by a driving motor, and the lifting of the catching claws can be determined according to the characteristics of the fabrics, so that the quality of the fabrics is higher; the pull-down device is more stable than the pull force of a common rotary roller, and when the front needle bed and the rear needle bed respectively weave cloth pieces, the pull-down device respectively pulls the front cloth piece and the rear cloth piece downwards so that the pull force of the two cloth pieces is the same.
Drawings
In order to more clearly illustrate the embodiments of the invention or the solutions in the prior art, a brief description will be given below of the drawings that are needed in the description of the embodiments or the prior art, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a part of a fabric pull-down device in embodiment 1 of the present invention.
Fig. 2 is another perspective view of a part of the fabric pull-down device of embodiment 1 of the present invention (with the rear cover removed).
Fig. 3 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 4 is a schematic side view of a fabric pull-down device according to embodiment 1 of the present invention.
Fig. 5 is a schematic view showing a structure in which a catching pawl is mounted on a pawl base in embodiment 1 of the present invention.
Fig. 6 is a schematic illustration of the relative installation of a pair of fabric pulldown devices.
Fig. 7 is a diagram illustrating the process of raising the catch pawl in example 1.
Fig. 8 is a schematic perspective view of a part of a fabric pull-down device in embodiment 2 of the present invention.
Fig. 9 is a schematic side view of fig. 8.
Fig. 10 is a diagram illustrating the process of raising the catching pawl in example 2.
Reference numerals illustrate: the device comprises a base 1, an upper shield 2, a slotted hole 21, a catching claw 3, a needle 31, a driving motor 4, a claw base 5, a screw slider 6, a screw 7, a balancing weight 8, a tilting rod 9, an arc section 91, a tilting rod top plate 10, a push rod electromagnet 11 and a rear shield 12.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Example 1.
See fig. 1-7.
The embodiment discloses a fabric pull-down device for a computerized flat knitting machine, which is arranged below a front needle bed and a rear needle bed of the computerized flat knitting machine in pairs, and comprises a base 1, an upper shield 2, a plurality of catching claws 3 and a driving motor 4 for driving the catching claws 3 to move up and down, wherein the driving motor 4 adopts a servo motor.
In this embodiment, a needle 31 for hooking the fabric is provided on the catch claw 3, and the base 1 is fixedly mounted on the flat knitting machine. The upper shield 2 is mounted above the base 1, and has a slot 21 formed in its front side surface to expose the needle 31 on the catch claw 3.
In this embodiment, a catch claw 3 is provided with a driving motor 4, the driving motor 4 is mounted on the base 1, and the catch claw 3 is inclined toward the front side surface near the upper shield 2 and the needle 31 for hooking the fabric is exposed from the slot 21 during the process of the driving motor 4 driving the catch claw 3 to descend. Specifically, a catch claw 3 is provided with a claw base 5; the catching claw 3 is hinged to the upper end of the claw base 5, and the lower end of the claw base 5 is connected with a screw rod sliding block 6; the output end of the driving motor 4 is provided with a vertical lead screw 7; the screw rod slide block 6 is arranged on the screw rod 7, and the screw rod slide block and the screw rod are in transmission connection. The claw base 5 is driven to move up and down in a screw transmission mode, and the device has the advantages of stable movement and high precision.
In this embodiment, a counterweight 8 is disposed on one side of the claw base 5, and the addition of the counterweight 8 can greatly increase the pull-down force of the capturing claw 3. In this embodiment, the catching jaw 3 is heavier at the head than at the tail, and the catching jaw 3 rotates to one side about its hinge point with the jaw base 5 in the absence of other external forces, so that the needle 31 for catching the fabric is exposed from the slot 21 during the descent.
In the embodiment, a tilting rod 9 is arranged on one side of the capturing claw 3; the tilting rod 9 is vertically arranged, the upper part of the tilting rod is fixedly connected with the capturing claw 3, and the tail part of the tilting rod is tilted in a direction away from the front side surface of the upper shield 2. The tilting lever 9 is provided with a tilting lever top plate 10, the tilting lever top plate 10 is arranged on the base 1, and acts on the tail part of the tilting lever 9, when the capturing claw 3 rises to a certain height, the tilting lever top plate 10 abuts against the tail part of the tilting lever 9, so that the tail part of the tilting lever 9 moves towards the direction close to the front side surface of the upper shield 2, namely, the capturing claw 3 is driven to rotate towards the direction far away from the front side surface of the upper shield 2, and the capturing claw 3 is completely positioned in the upper shield 2.
In this embodiment, the warpage rod 9 is divided into an upper part, a middle part and a tail part, wherein the connection part of the middle part and the tail part adopts an arc section 91 for transition, and correspondingly, the front end surface of the warpage rod top plate 10 is an arc surface; the front end face of the warping rod top plate 10 is used for abutting against the tail of the warping rod 9, and the arc surface is designed to enable the warping rod top plate 10 to abut against the tail of the warping rod 9 smoothly and without interference in the rising process of the warping rod 9.
In this embodiment, a pair of fabric pulldown devices are installed below the front needle bed and the rear needle bed of the flat knitting machine in such a manner that the front sides of the upper shields 2 of the two are opposed to each other, and a vertical passage of the fabric is formed between the front sides of the two upper shields 2. The base 1 is also provided with a rear shield 12, the upper shield 2 is in an inverted J shape, and the upper shield 2 is connected with the top of the rear shield 12.
In this embodiment, each capturing claw 3 is individually controlled by a driving motor 4, and the capturing claws 3 are controlled to move up and down through the transmission of a screw rod, and when the capturing claws rise to a certain height, the tilting rod 9 is pressed by the tilting rod top plate 10, so that the capturing claws 3 enter the upper shield 2 to stop working, and yarn hooking is prevented.
Example 2.
Referring to fig. 8 to 10, the present embodiment 2 differs from embodiment 1 in that: a stick-up lever 9 is provided with a push rod electromagnet 11, the push rod electromagnet 11 is arranged on the base 1 and acts on the tail of the stick-up lever 9, when the catch claw 3 rises to a certain height, the push rod of the push rod electromagnet 11 stretches out to lean against the tail of the stick-up lever 9, so that the tail of the stick-up lever 9 moves in a direction close to the front side surface of the upper shield 2, namely, the catch claw 3 is driven to rotate in a direction far away from the front side surface of the upper shield 2, and the catch claw 3 is completely positioned in the upper shield 2.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present invention. Equivalent or simple changes of the structure, characteristics and principle of the present invention are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The utility model provides a fabric drop-down device for computerized flat knitting machine, arranges in pairs in the below of front needle bed and back needle bed of flat knitting machine, fabric drop-down device includes base (1), last guard shield (2) and a plurality of catch claw (3), be provided with on catch claw (3) and be used for catching needle (31) of fabric, its characterized in that: the device also comprises a driving motor (4) for driving the catching claw (3) to move up and down; the base (1) is fixedly arranged on the flat knitting machine; the upper shield (2) is arranged above the base (1), and a slotted hole (21) capable of exposing a needle (31) on the catching claw (3) is formed on the front side surface of the upper shield; a catching claw (3) is provided with a driving motor (4), the driving motor (4) is arranged on the base (1), and in the process that the driving motor (4) drives the catching claw (3) to descend, the catching claw (3) inclines towards the front side surface close to the upper shield (2) and a needle (31) for hooking fabrics is exposed from the slotted hole (21); a catch claw (3) is provided with a claw base (5); the catching claw (3) is hinged to the upper end of the claw base (5), and the lower end of the claw base (5) is connected with a screw rod sliding block (6); the output end of the driving motor (4) is provided with a vertical lead screw (7); the screw slider (6) is arranged on the screw (7) and is in transmission connection with the screw; one side of the claw base (5) is provided with a balancing weight (8); a tilting rod (9) is arranged at one side of the capturing claw (3); the tilting rod (9) is vertically arranged, the upper part of the tilting rod is fixedly connected with the capturing claw (3), and the tail part of the tilting rod is tilted in a direction away from the front side surface of the upper shield (2); the device comprises a base (1), a lifting rod (9) and a lifting rod top plate (10), wherein the lifting rod top plate (10) is arranged on the base (1) and acts on the tail of the lifting rod (9), when the capturing claw (3) rises to a certain height, the lifting rod top plate (10) abuts against the tail of the lifting rod (9) to enable the tail of the lifting rod (9) to move towards the direction close to the front side surface of the upper shield (2), namely, the capturing claw (3) is driven to rotate towards the direction far away from the front side surface of the upper shield (2), and therefore the capturing claw (3) is completely located in the upper shield (2); the device comprises a base (1), a lifting rod (9) and a push rod electromagnet (11), wherein the push rod electromagnet (11) is arranged on the base (1) and acts on the tail of the lifting rod (9), when the capturing claw (3) rises to a certain height, a push rod of the push rod electromagnet (11) stretches out to lean against the tail of the lifting rod (9), so that the tail of the lifting rod (9) moves in a direction close to the front side surface of the upper shield (2), namely the capturing claw (3) is driven to rotate in a direction far away from the front side surface of the upper shield (2), and the capturing claw (3) is completely positioned in the upper shield (2); the warping rod (9) is divided into an upper part, a middle part and a tail part, wherein the joint of the middle part and the tail part adopts an arc section (91) for transition, and correspondingly, the front end surface of the warping rod top plate (10) is an arc surface; the front end face of the warping rod top plate (10) is used for propping against the tail of the warping rod (9).
2. The fabric pull-down device for a computerized flat knitting machine as claimed in claim 1, wherein: a pair of fabric pull-down devices are arranged below a front needle bed and a rear needle bed of the flat knitting machine in a mode that front side surfaces of two upper shields (2) are opposite, and a vertical channel of fabric is formed between the front side surfaces of the two upper shields (2).
3. The fabric pull-down device for a computerized flat knitting machine as claimed in claim 1, wherein: the base (1) is also provided with a rear shield (12), the upper shield (2) is in an inverted J shape, and the upper shield (2) is connected with the top of the rear shield (12).
4. The fabric pull-down device for a computerized flat knitting machine as claimed in claim 1, wherein: the driving motor (4) adopts a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911257989.3A CN110923933B (en) | 2019-12-10 | 2019-12-10 | Fabric pull-down device for computerized flat knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911257989.3A CN110923933B (en) | 2019-12-10 | 2019-12-10 | Fabric pull-down device for computerized flat knitting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110923933A CN110923933A (en) | 2020-03-27 |
| CN110923933B true CN110923933B (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911257989.3A Active CN110923933B (en) | 2019-12-10 | 2019-12-10 | Fabric pull-down device for computerized flat knitting machine |
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| Country | Link |
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| CN (1) | CN110923933B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183449A (en) * | 1996-11-06 | 1998-07-14 | Shima Seiki Mfg Ltd | Knit fabric-lowering device in flat knitting machine |
| JP2007231463A (en) * | 2006-03-01 | 2007-09-13 | Shima Seiki Mfg Ltd | Knit fabric pull-down device and knit fabric pull-down unit |
| EP2141271A1 (en) * | 2008-07-01 | 2010-01-06 | H. Stoll GmbH & Co. KG | Knitted fabric take-down device |
| CN202430437U (en) * | 2011-12-31 | 2012-09-12 | 江苏雪亮电器机械有限公司 | Braided fabric traction system for computerized flat knitting machine with low machine number |
| JP2016211090A (en) * | 2015-04-30 | 2016-12-15 | 株式会社島精機製作所 | Knitted fabric pull-down device |
| JP2016216876A (en) * | 2015-05-25 | 2016-12-22 | 株式会社島精機製作所 | Knitted fabric pull-down device |
| CN108642695A (en) * | 2018-07-04 | 2018-10-12 | 宁波慈星股份有限公司 | A kind of pulling device of knitting machine |
| CN110129979A (en) * | 2019-05-07 | 2019-08-16 | 桐乡市巨星针织机械制造有限公司 | A kind of braided fabric pulling device of electromagnetic drive |
| CN211734652U (en) * | 2019-12-10 | 2020-10-23 | 桐乡市强隆机械有限公司 | Fabric pull-down device for computerized flat knitting machine |
-
2019
- 2019-12-10 CN CN201911257989.3A patent/CN110923933B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183449A (en) * | 1996-11-06 | 1998-07-14 | Shima Seiki Mfg Ltd | Knit fabric-lowering device in flat knitting machine |
| JP2007231463A (en) * | 2006-03-01 | 2007-09-13 | Shima Seiki Mfg Ltd | Knit fabric pull-down device and knit fabric pull-down unit |
| EP2141271A1 (en) * | 2008-07-01 | 2010-01-06 | H. Stoll GmbH & Co. KG | Knitted fabric take-down device |
| CN202430437U (en) * | 2011-12-31 | 2012-09-12 | 江苏雪亮电器机械有限公司 | Braided fabric traction system for computerized flat knitting machine with low machine number |
| JP2016211090A (en) * | 2015-04-30 | 2016-12-15 | 株式会社島精機製作所 | Knitted fabric pull-down device |
| JP2016216876A (en) * | 2015-05-25 | 2016-12-22 | 株式会社島精機製作所 | Knitted fabric pull-down device |
| CN108642695A (en) * | 2018-07-04 | 2018-10-12 | 宁波慈星股份有限公司 | A kind of pulling device of knitting machine |
| CN110129979A (en) * | 2019-05-07 | 2019-08-16 | 桐乡市巨星针织机械制造有限公司 | A kind of braided fabric pulling device of electromagnetic drive |
| CN211734652U (en) * | 2019-12-10 | 2020-10-23 | 桐乡市强隆机械有限公司 | Fabric pull-down device for computerized flat knitting machine |
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| CN110923933A (en) | 2020-03-27 |
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