CN211734651U

CN211734651U - Knitting pull-down device of computerized flat knitting machine

Info

Publication number: CN211734651U
Application number: CN201922203558.0U
Authority: CN
Inventors: 韩徐斌; 安勇强; 俞惠钟; 钟佳明; 张锋; 王靖敏
Original assignee: Tongxiang Qianglong Machinery Co Ltd
Current assignee: Tongxiang Qianglong Machinery Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-10-23
Anticipated expiration: 2029-12-10

Abstract

The utility model relates to a knitting fabric pull-down device of a computerized flat knitting machine, which comprises a base, an upper shield, a plurality of catching claws and a driving motor, wherein the catching claws are provided with needles for catching a fabric, the driving motor is arranged on the base, and the base is fixedly arranged on the flat knitting machine; the upper shield is arranged above the base, and the front side surface of the upper shield is provided with a slotted hole which can expose the needle on the catching claw; two adjacent catching claws are driven by a driving motor to do ascending motion; the catching claw descends due to its own weight, and in the process of descending, the catching claw is inclined to the front side surface close to the upper shield and the needle for catching the fabric is exposed from the slotted hole. One driving motor controls the two catching claws to ascend, and the first cam is reasonably arranged on the double output shafts of the driving motor, so that one catching claw does ascending motion while the other catching claw does descending motion, the tension is stable and stable, and the woven fabric is not easy to deviate and have different lengths.

Description

Knitting pull-down device of computerized flat knitting machine

Technical Field

The utility model relates to a computerized flat knitting machine field, specifically say, relate to a knitting fabric pull-down device of computerized flat knitting machine.

Background

For example, in patent publication No. CN106192187B, a catching and pulling-down mechanism in the pulling-down device is a rotary roller type in which a catching member is driven to move up and down by driving a pulling-down cam to rotate in a specific direction, but the pulling force generated by the rotary roller type is unstable, and when weaving fabric pieces on front and rear needle beds, for example, the pulling force of the rotary roller is affected by sliding friction between the fabric pieces to produce fabric pieces of different lengths, so it is necessary to improve and optimize the conventional pulling-down device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a knitting pull-down device of computerized flat knitting machine that structural design is reasonable, the pulling force is steady.

The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a knitting pull-down device of computerized flat knitting machine, arranges the below at the front needle bed and the back needle bed of flat knitting machine in pairs, knitting pull-down device includes the base, goes up guard shield and a plurality of and catches the claw, be provided with the needle that is used for catching the fabric on catching the claw, its characterized in that: the catching claw is arranged on the upper end of the bracket; the driving motor is arranged on a base, and the base is fixedly arranged on the flat knitting machine; the upper shield is arranged above the base, and a slot hole which can expose the needle on the catching claw is formed in the front side surface of the upper shield; two adjacent catching claws are driven by a driving motor to do ascending motion; the catching claw descends due to its own weight, and in the process of descending, the catching claw is inclined to the front side surface close to the upper shield and the needle for catching the fabric is exposed from the slotted hole.

Preferably, the base is further 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, one catching claw is provided with one claw base; the catching claw is hinged to the upper end of the claw base, a guide rail sliding block is mounted on the back face of the claw base and mounted on a guide rail, and the guide rail is connected with the rear shield.

Preferably, a roller is installed at the bottom end of the claw base; the driving motor is horizontally arranged and is arranged on the base, the driving motor is provided with double output shafts, a first cam is arranged on each output shaft, and the first cam is matched with the roller; the driving motor drives the first cams arranged at the two ends of the driving motor to rotate, and the rotation of the first cams drives the two claw bases to move up and down respectively through the rollers.

Preferably, a counterweight is arranged on one side of the claw base, and the counterweight is used for increasing the gravity borne by the catching claw in the descending process, so that the downward pulling force is increased.

Preferably, one side of the catching claw is provided with a tilting rod; the raising rod is vertically arranged, the upper portion of the raising rod is fixedly connected with the capturing claw, and the tail portion of the raising rod is raised in the direction far away from the front side face of the upper shield.

Preferably, driving motor has dual output shaft, all installs No. two cams on every output shaft, and No. two cams act on the afterbody of the stick-up pole of two adjacent seizure claw one side installations respectively, the seizure claw is at the ascending in-process, and the afterbody of stick-up pole is supported by the tip of No. two cams, makes the afterbody of stick-up pole to the direction that is close to the upper shield leading flank remove, drives promptly and catches the claw and to take place to rotate to the direction of keeping away from the upper shield leading flank to make the seizure claw be located the upper shield completely, prevent to catch the claw and take the braid at the in-process mistake that rises.

Preferably, the pair of fabric pull-down devices are installed below the front needle bed and the back needle bed of the flat knitting machine in such a manner that the front sides of the upper shields of the two devices are opposed to each other, and a vertical passage of the fabric is formed between the front sides of the upper shields.

Preferably, the driving motor is a servo motor.

Preferably, the back of the claw base is provided with a station selection block, the station selection block is provided with a full-stroke clamping groove, a half-stroke clamping groove and an out-of-work clamping groove which are sequentially arranged from top to bottom, each claw base is provided with a station triangle and a station selection electromagnet, the station triangles are connected with the station selection electromagnets, the station selection electromagnets are installed on the bases, and the station selection electromagnets drive the station triangles to rotate, so that the station triangles are clamped into the full-stroke clamping groove, the half-stroke clamping groove or the out-of-work clamping groove. The specific station selection process comprises the following steps: when the catching claw rises to the highest position, the working position triangle is enabled to generate action and is clamped into the non-working clamping groove, and the catching claw is limited to descend, namely the catching claw does not work; when the catching claw works and descends to a half-stroke distance, the working position triangle acts to be clamped into the half-stroke clamping groove to limit the catching claw to continuously descend, and at the moment, the catching claw finishes a half stroke; when the catching claw works and descends to the full-stroke distance, if the catching claw does not participate in the work next time, the station triangle is enabled to move and clamped into the full-stroke clamping groove, and if the catching claw continues to participate in the work next time, the station triangle does not make a selection.

Compared with the prior art, the utility model, have following advantage and effect: a driving motor controls two catching claws to ascend, the two catching claws do not ascend or descend at the same time, a first cam is reasonably arranged on a double output shaft of the driving motor, one catching claw does ascending motion, the other catching claw does descending motion, all the catching claws are divided into two groups, woven fabrics are pulled down in sequence alternately, the pulling force is stable and stable, and the woven fabrics are not prone to deviation and different in length.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a part of a braid pull-down device in an embodiment of the present invention.

Fig. 2 is another perspective view of a portion of a fabric pull-down device (with the rear cover removed) in an embodiment of the invention.

Fig. 3 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 4 is an enlarged schematic view of a part B in fig. 2 (mainly illustrating a mounting position of the station selection electromagnet).

Fig. 5 is an enlarged schematic view of the structure at B in fig. 2 (mainly illustrating the installation position of the station triangle).

FIG. 6 is a view showing a structure in which a claw for catching, a guide slider, and a weight member are mounted on a claw base.

FIG. 7 is a schematic view showing a driving motor connected to two catching claws.

Fig. 8 is a diagram illustrating a raising process of the catching paw.

FIG. 9 is a schematic view of the position triangle snapped into the inoperative channel with the catch pawl in the inoperative position.

FIG. 10 is a schematic view of the position triangle snapped into the half-stroke snap-in slot with the catch pawl in the half-stroke position.

FIG. 11 is a schematic view of the catch pawl in the full stroke position, with the catch pawl not engaged in the next operation, and the station triangle snapped into the full stroke snap slot.

FIG. 12 is a schematic illustration of the catch pawl in the full stroke position, with the catch pawl continuing to engage the work the next time, the station triangle is not selected.

Description of reference numerals: 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 guide rail slide block 6, a guide rail 7, a roller 8, a first cam 9, a balancing weight 10, a raising rod 11, a second cam 12, a station selection block 13, a full-stroke clamping groove 131, a half-stroke clamping groove 132, a non-working clamping groove 133, a station triangle 14, a station selection electromagnet 15 and a rear shield 16.

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 are not intended to limit the present invention.

Example 1.

See fig. 1-12.

The embodiment discloses a knitting fabric pull-down device of a computerized flat knitting machine, which is arranged below a front needle bed and a back needle bed of the 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 and is arranged on the base 1. A needle 31 for hooking the fabric is arranged on the catching claw 3, and the base 1 is fixedly arranged on the flat knitting machine; the upper shield 2 is mounted above the base 1, and has a slot 21 formed in a front side surface thereof to expose the needle 31 of the catch pawl 3. 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. A pair of fabric pull-down devices are installed below the front needle bed and the back needle bed of the flat knitting machine in such a manner that the front sides of the upper shields 2 are opposite to each other, and a vertical passage for fabric is formed between the front sides of the upper shields 2.

In this embodiment, one driving motor 4 drives two adjacent capturing claws 3 to perform an ascending motion, but the ascending motion of the two adjacent capturing claws 3 is not performed synchronously, one of the capturing claws 3 performs an ascending motion, and the other capturing claw 3 performs a descending motion under the action of its own weight. During the lowering of the catching claw 3, the catching claw 3 is inclined toward the front side close to the upper hood 2 and its needle 31 for catching the cloth is exposed from the slot hole 21.

In this embodiment, one claw base 5 is provided for one capturing claw 3; the catching claw 3 is hinged at the upper end of a claw base 5, a guide rail sliding block 6 is installed on the back surface of the claw base 5, the guide rail sliding block 6 is installed on a guide rail 7, and the guide rail 7 is connected with a rear shield 12. A roller 8 is mounted to the bottom end of the claw base 5. A weight block 10 is further disposed on one side of the claw base 5, and the weight block 10 is used to increase the gravity applied to the capturing claw 3 during the descending process, so as to increase the pulling force.

In this embodiment, the driving motor 4 is horizontally arranged and installed on the base 1, the driving motor 4 has two output shafts, a first cam 9 is installed on each output shaft, and the first cam 9 is matched with the roller 8. The driving motor 4 drives the first cams 9 installed at the two ends of the driving motor to rotate, and the rotation of the first cams 9 drives the two claw bases 5 to ascend respectively through the idler wheels 8. Two first cams 9 are arranged in a central symmetry manner, so that one capturing claw 3 performs a lifting action, and the other capturing claw 3 performs a descending action under the self-weight. When the claw 3 is lifted, the first cam 9 pushes the roller 8 upward, so that the claw base 5 is lifted along the guide rail 7.

In this embodiment, a raising rod 11 is installed at one side of the capturing claw 3; the tilting rod 11 is vertically arranged, the upper part of the tilting rod is fixedly connected with the catching claw 3, and the tail part of the tilting rod tilts towards the direction far away from the front side surface of the upper shield 2. Still all install No. two cams 12 on the output shaft at driving motor 4 both ends in this embodiment, two No. two cams 12 act on the afterbody of the stick up pole 11 of 3 one side installations of two adjacent seizure claws respectively, it rises the in-process to catch claw 3, the afterbody of stick up pole 11 is supported by the tip of No. two cams 12, the afterbody that makes stick up pole 11 removes to the direction that is close to the 2 leading flank of last guard shield, drive promptly and catch claw 3 and take place to rotate to the direction of keeping away from the 2 leading flanks of last guard shield, thereby make and catch claw 3 and be in last guard shield 2 completely.

Fig. 8 shows the ascending process of the catching claw 3 under the action of the first cam 9, and in the ascending process, the tilting rod 11 gradually drives the catching claw 3 to retreat into the upper shield 2 under the action of the second cam 12 so as to prevent the braid from being mistakenly taken in the ascending process.

In this embodiment, the back surface of the claw base 5 is provided with a station selection block 13, the station selection block 13 is provided with a full-stroke slot 131, a half-stroke slot 132 and a non-working slot 133 which are sequentially arranged from top to bottom, each claw base 5 is provided with a station triangle 14 and a station selection electromagnet 15, the station triangle 14 is connected with the station selection electromagnet 15, the station selection electromagnet 15 is arranged on the base 1, and the station selection electromagnet 15 drives the station triangle 14 to rotate, so that the station triangle 14 is clamped into the full-stroke slot 131, the half-stroke slot 132 or the non-working slot 133.

Referring to fig. 9 to 12, the process of selecting a specific station is: when the catching claw 3 rises to the highest position, the working position triangle 14 acts to be clamped into the non-working clamping groove 133, and the catching claw 3 is limited to descend, namely the catching claw 3 does not work; when the catching claw 3 works, in the descending process, when the position is descended to the half stroke distance, the station triangle 14 acts to be clamped into the half stroke clamping groove 132, the catching claw 3 is limited to continuously descend, and at the moment, the catching claw 3 finishes the half stroke; when the catching claw 3 is in operation, in the process of descending, when the catching claw 3 is descended to the full stroke distance, if the catching claw 3 does not participate in the operation next time, the station cam 14 is operated to be clamped into the full stroke clamping groove 131, and if the catching claw 3 continues to participate in the operation next time, the station cam 14 does not make a selection.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the patent idea of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a knitting pull-down device of computerized flat knitting machine, arranges in pairs in the below of the front needle bed and the back needle bed of flat knitting machine, knitting pull-down device includes base (1), last guard shield (2) and a plurality of catches claw (3), be provided with needle (31) that are used for catching on the fabric on catching claw (3), its characterized in that: the device also comprises a driving motor (4) for driving the catching claw (3) to ascend; the driving motor (4) is arranged on the base (1), and the base (1) is fixedly arranged on the flat knitting machine; the upper shield (2) is arranged above the base (1), and the front side surface of the upper shield is provided with a slotted hole (21) which can expose a needle (31) on the catching claw (3); two adjacent catching claws (3) are driven by a driving motor (4) to do ascending motion; the catching claw (3) is lowered by its own weight, and during the lowering, the catching claw (3) is inclined toward the front side surface close to the upper shield (2) and its needle (31) for catching the fabric is exposed from the slot (21).

2. The knit fabric pull-down device of the computerized flat knitting machine according to claim 1, characterized in that: the base (1) is further provided with a rear shield (16), the upper shield (2) is in an inverted J shape, and the upper shield (2) is connected with the top of the rear shield (16).

3. The knit fabric pull-down device of the computerized flat knitting machine according to claim 2, characterized in that: a catching claw (3) is provided with a claw base (5); catch claw (3) and articulate in the upper end of claw base (5), the back mounted of claw base (5) has guide rail slider (6), and guide rail slider (6) are installed on a guide rail (7), guide rail (7) are connected with back guard shield (16).

4. The knit fabric pull-down device of the computerized flat knitting machine according to claim 3, characterized in that: the bottom end of the claw base (5) is provided with a roller (8); the driving motor (4) is horizontally arranged and mounted on the base (1), the driving motor (4) is provided with double output shafts, a first cam (9) is mounted on each output shaft, and the first cam (9) is matched with the roller (8); the driving motor (4) drives the first cam (9) arranged at the two ends to rotate, and the first cam passes through the roller (8),

the rotation of the two first cams (9) drives the two claw bases (5) to ascend respectively.

5. The knit fabric pull-down device of the computerized flat knitting machine according to claim 3, characterized in that: and one side of the claw base (5) is provided with a balancing weight (10).

6. The knit fabric pull-down device of the computerized flat knitting machine according to claim 1, characterized in that: a warping rod (11) is arranged on one side of the capturing claw (3); the raising rod (11) is vertically arranged, the upper part of the raising rod is fixedly connected with the catching claw (3), and the tail part of the raising rod is raised towards the direction far away from the front side surface of the upper shield (2).

7. The knit fabric pull-down device of the computerized flat knitting machine according to claim 6, wherein: driving motor (4) have dual output shaft, all install No. two cam (12) on every output shaft, two No. two cam (12) act on respectively two adjacent tails of sticking up pole (11) of catching claw (3) one side installation, catching claw (3) at the in-process that rises, the tip of No. two cam (12) supports the afterbody of sticking up pole (11), makes the afterbody of sticking up pole (11) to the direction removal of being close to last guard shield (2) leading flank, drives promptly and catches claw (3) and take place to rotate to the direction of keeping away from last guard shield (2) leading flank to make catching claw (3) be in last guard shield (2) completely.

8. The knit fabric pull-down device of the computerized flat knitting machine according to claim 1, characterized in that: the pair of fabric pull-down devices are arranged below a front needle bed and a back needle bed of the flat knitting machine in a mode that the front side surfaces of the upper shields (2) of the pair of fabric pull-down devices are opposite, and a vertical passage of fabric is formed between the front side surfaces of the two upper shields (2).

9. The knit fabric pull-down device of the computerized flat knitting machine according to claim 1, characterized in that: the driving motor (4) adopts a servo motor.

10. The knit fabric pull-down device of the computerized flat knitting machine according to claim 3, characterized in that: the back mounting of claw base (5) has station selection piece (13), has full stroke draw-in groove (131), half stroke draw-in groove (132) and the draw-in groove of not working (133) that top-down set gradually on this station selection piece (13), and every claw base (5) disposes a station triangle (14) and station selection electro-magnet (15), station triangle (14) and station selection electro-magnet (15) are connected, and station selection electro-magnet (15) are installed on base (1), and station selection electro-magnet (15) are rotatory through driving station triangle (14) to make station triangle (14) block to in full stroke draw-in groove (131), half stroke draw-in groove (132) or the draw-in groove of not working (133).