A flatness detection device for a flat knitting machine

Abstract

A kind of flatness detection device of flat knitting machine gripper needle, including platform and rake being arranged on platform, rake is provided with gripper needle, the platform is equipped with sliding mechanism and drive mechanism, the sliding mechanism includes slide rail and the sliding block being slidably connected on slide rail, sliding block is fixedly connected with frame table seat;The drive mechanism includes transmission assembly and the pressing block being synchronously driven with transmission assembly, and the clamping groove being formed on frame table seat is matched with pressing block, and frame table seat is slid on slide rail by pressing block;Compared with prior art, by transmission assembly driving pressing block to move, and by the clamping of pressing block and frame table seat, the movement of pressing block drives frame table seat to slide on slide rail is realized, while frame table seat moves and drives detection mechanism to move, the automated movement of detection mechanism is realized, by the clamping of frame table seat and pressing block and the fixed connection of sliding block and frame table seat, the movement stability of frame table seat is ensured, so as to improve the measurement accuracy of detection mechanism.

Description

A flatness detection device for pin gripping on a flat knitting machine Technical Field

[0001] This invention relates to the field of knitting machinery technology, and more specifically to a flatness detection device for needle gripping on a flat knitting machine. Background Technology

[0002] Flat knitting machine (or simply flat knitting machine) is a type of knitting machinery. It generally refers to a horizontal knitting machine, meaning a machine that uses a horizontal knitting needle bed for knitting. Flat knitting machines, according to their development, include hand-cranked flat knitting machines, semi-automatic flat knitting machines, and computerized flat knitting machines (computerized jacquard machines, computerized collar knitting machines, computerized glove knitting machines, and other simple computerized flat knitting machines). They are also classified by system: single-system computerized flat knitting machines, double-system computerized flat knitting machines, triple-system computerized flat knitting machines, and quadruple-system computerized flat knitting machines. Furthermore, they are classified by the number of knitting heads: headless, single-head, double-head, and multi-head.

[0003] The flat knitting machine is the main production equipment for wool sweaters, consisting of more than 130 parts. The specifications of the flat knitting machine are based on its needle type and length. The needle type refers to the number of grooves per inch (2.54 cm) on the needle plate; the length is the total horizontal distance (in inches) of the needle plate with needle grooves, i.e., the effective length of the needle plate. Flat knitting machine specifications are: 3x40, 7x40, 9x40, 12x40, and 14x40. The numbers indicate the needle type and length, respectively. The main components of the flat knitting machine are the frame, rake, needle holder, guide rail, auger, and pattern board. The flat knitting machine has very high requirements for the flatness of the needle bed base. The flatness of the needle bed base affects the placement of the needle plate and directly affects the quality of the fabric. A coordinate measuring machine (CMM) is usually used to measure the flatness of the needle bed base; however, this instrument is complex and cumbersome to operate, requiring skilled operators and increasing the difficulty of measuring the flatness of the needle bed base.

[0004] Currently, in the production process of the flat knitting machine, in order to measure whether each gripper on the rake is in a plane, a long flat plate is usually used to approach a group of grippers, and then a feeler gauge is used to fill the gaps to obtain the height difference data. The measurement efficiency is relatively low, and it relies too much on human factors. The operator's skill level directly affects the accuracy of the measurement. Summary of the Invention

[0005] The present invention aims to overcome the defects in the prior art and provide a flatness detection device for a flat knitting machine that can automatically detect the flatness of the needle gripper.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a flatness detection device for a flat knitting machine needle gripper, comprising a platform and a rake disposed on the platform, the rake being equipped with a needle gripper; a sliding mechanism and a driving mechanism are mounted on the platform; the sliding mechanism includes a slide rail and a slider slidably connected to the slide rail, the slider being fixedly connected to a gauge holder; the driving mechanism includes a transmission component and a pressure block that drives synchronously with the transmission component; the gauge holder has a locking groove adapted to the pressure block, the pressure block driving the gauge holder to slide on the slide rail; the pressure block and the slider are disposed on opposite sides of the gauge holder; the gauge holder is also provided with a detection mechanism corresponding to the rake; a control system electrically connected to the driving mechanism and the detection mechanism is also provided on the platform.

[0007] As a preferred embodiment of the present invention, the sliding mechanism further includes a plurality of slide rail pads disposed at the bottom of the slide rail, and the slide rail pads are arranged along the length of the slide rail. A slide rail stop is provided at one end of the slide rail, and a zero-position sensor is provided at the other end of the slide rail. The slide rail stop is used to prevent the slider from sliding out of the slide rail during movement, and the zero-position sensor is used for zero-point positioning of the slider, thereby ensuring that the detection mechanism can accurately move to the corresponding gripper position.

[0008] As a preferred embodiment of the present invention, the driving mechanism includes a motor bracket and a driven wheel base set at both ends of the transmission component. A servo motor for driving the transmission component is mounted on the motor bracket, and a movable adjustable support is provided on the driven wheel base. The adjustable support is used to adjust the position of the transmission component, thereby making the detection mechanism run more smoothly.

[0009] As a preferred embodiment of the present invention, the transmission assembly includes a driven pulley, a driving pulley, and a synchronous belt. The driven pulley and the driving pulley are disposed at opposite ends of the synchronous belt. The driven pulley is rotatably connected to the adjusting support, and the driving pulley is connected to the output shaft of the servo motor, thereby realizing the autonomous operation of the detection mechanism, avoiding manual intervention, and improving detection efficiency.

[0010] As a preferred embodiment of the present invention, a drag chain groove is provided on one side of the synchronous belt, and a drag chain connected to the detection mechanism is provided in the drag chain groove. The end of the drag chain is fixedly connected to the frame base. The cooperation between the drag chain and the detection mechanism can improve the smooth operation of the detection mechanism and ensure the accuracy of the measurement.

[0011] As a preferred embodiment of the present invention, the detection mechanism includes a meter frame mounted on a meter holder, a meter clamp mounted on the meter frame, a contact displacement sensor mounted on the meter clamp, a measuring plate mounted on the end of the contact displacement sensor, and the measuring plate abutting against the gripper pin.

[0012] As a preferred embodiment of the present invention, the contact displacement sensor is provided with a vacuum tube at its tail end, which is connected to a vacuum generator. The vacuum generator is mounted on a stand. The contact displacement sensor is also electrically connected to a communication cable for transmitting measurement data at its tail end. Through the cooperation of the measuring plate, the contact displacement sensor and the vacuum generator, the detection of the gripper pin is realized.

[0013] As a preferred embodiment of the present invention, through slots are formed on both sides of the snap-fit ​​groove to facilitate the placement of the timing belt. The timing belt, pressure block and the frame base are always synchronously driven to ensure the synchronous movement of the frame base and the timing belt, thereby realizing the autonomous movement of the detection mechanism.

[0014] As a preferred embodiment of the present invention, the platform is provided with a fixed seat for adjusting the position of the rake, and the rake is mounted on the fixed seat.

[0015] As a preferred embodiment of the present invention, the fixed seat, slide rail, timing belt, and drag chain are arranged along the length direction of the platform, and the fixed seat, slide rail, timing belt, and drag chain are parallel to each other, which can improve the accuracy of the detection of the flatness of the gripper pin.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The pressure block is moved by the transmission component and is engaged with the meter holder, so that the pressure block drives the meter holder to move on the slide rail. At the same time, the movement of the meter holder drives the movement of the detection mechanism, realizing the automated movement of the detection mechanism. The engagement between the meter holder and the pressure block and the fixed connection between the slider and the meter holder ensure the movement stability of the meter holder, thereby improving the measurement accuracy of the detection mechanism.

[0018] 2. The slider and the pressure block are positioned opposite each other on opposite sides of the meter holder, so that the meter holder is pressed down by the slider and the pressure block during the movement of the meter holder, thus ensuring the stability of the meter holder's movement. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of the present invention;

[0020] Figure 2 is an enlarged structural schematic diagram of point A in the present invention;

[0021] Figure 3 is an exploded view of the present invention;

[0022] Figure 4 is a schematic diagram of the testing mechanism during operation;

[0023] Figure 5 is a schematic diagram of the structure for measuring the retraction of the plate;

[0024] Figure 6 is a schematic diagram of the structure for measuring the extension of the plate.

[0025] Reference numerals: Platform 1, Rake 2, Gripper 201, Fixed base 202, Sliding mechanism 3, Slide rail 301, Slide rail pad 302, Slider 303, Slide rail stop 304, Zero position sensor 305, Table holder 306, Snap-fit ​​groove 307, Drive mechanism 4, Driven wheel base 401, Adjusting support 402, Driven wheel 403, Motor bracket 404, Servo motor 405, Drive pulley 406, Synchronous belt 407, Cable track 408, Cable track 409, Pressure block 4010, Detection mechanism 5, Vacuum generator 501, Table holder 502, Table clamp 503, Contact displacement sensor 504, Measuring plate 505, Vacuum tube 506, Communication cable 507. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] As shown in Figures 1-6, a flatness detection device for a flat knitting machine includes a platform 1 and a rake 2 mounted on the platform 1. A needle 201 is mounted on the rake 2. A sliding mechanism 3 and a driving mechanism 4 are installed on the platform 1. The sliding mechanism 3 includes a slide rail 301 and a slider 303 slidably connected to the slide rail 301. A frame holder 306 is fixedly connected to the slider 303. The driving mechanism 4 includes a transmission component and a pressure block 4010 that drives synchronously with the transmission component. The frame holder 306 has a locking groove 307 adapted to the pressure block 4010. The pressure block 4010 drives the frame holder 306 to slide on the slide rail 301. The pressure block 4010 and the slider 303 are located on opposite sides of the frame holder 306. The frame holder 306 also has a detection mechanism 5 corresponding to the rake 2. A control system 6 electrically connected to the driving mechanism 4 and the detection mechanism 5 is also provided on the platform 1.

[0028] The transmission component drives the gauge holder 306 and the slider 303 to move on the slide rail 301, thereby driving the detection mechanism 5 to move. The locking groove 307 is formed at the upper end of the gauge holder 306, and the pressure block 4010 engages with the locking groove 307. The slider 303 moves along the length of the slide rail 301. One end of the gauge holder 306 extends a portion toward the transmission component. The detection mechanism 5 is located directly above the slider 303. The transmission component is installed on the extension of the gauge holder 306 to ensure that the transmission component and the detection mechanism 5 do not interfere with each other during operation.

[0029] The sliding mechanism 3 also includes several slide rail pads 302 disposed at the bottom of the slide rail 301, and the slide rail pads 302 are arranged along the length of the slide rail 301. A slide rail stop 304 is provided at one end of the slide rail 301, and a zero-position sensor 305 is provided at the other end of the slide rail 301. The upper end of the slide rail pad 302 is fixedly connected to the slide rail 301, and the lower end of the slide rail pad 302 abuts against the platform 1. The slide rail pads 302 are evenly arranged at the bottom of the slide rail 301. In actual operation, the slide rail pads 302 can improve the stability of the slide rail 301, thereby enhancing the stability of the detection mechanism 5 during movement. The slide rail stop 304 is fixed at the end of the slide rail 301 to prevent the slider 303 from detaching from the slide rail 301 during the movement of the slider 303. The zero-position sensor 305 is used for zero-point positioning of the slider, thereby ensuring that the detection mechanism 5 can accurately move to the corresponding gripper 201 position.

[0030] The drive mechanism 4 includes a motor bracket 404 and a driven wheel base 401 disposed at both ends of the transmission component. A servo motor 405 that drives the transmission component is mounted on the motor bracket 404. A movable adjustable support 402 is provided on the driven wheel base 401. The motor bracket 404 is fixedly connected to the platform 1, the driven wheel base 401 is fixedly connected to the platform 1, and the servo motor 405 is fixedly connected to the motor bracket 404 by bolts.

[0031] The transmission assembly includes a driven pulley 403, a driving pulley 406, and a synchronous belt 407. The driven pulley 403 and the driving pulley 406 are located at opposite ends of the synchronous belt 407. The driven pulley 403 is rotatably connected to the adjusting support 402, and the driving pulley 406 is connected to the output shaft of the servo motor 405.

[0032] Driven wheel 403 is mounted on adjusting support 402 and moves with the adjustment support 402. Synchronous belt 407 is sleeved on driven wheel 403 and driving pulley 406. Servo motor 405 drives driving pulley 406 to rotate, thereby driving synchronous belt 407 to rotate, thus realizing the movement of detection mechanism 5. At the same time, the forward and reverse rotation of servo motor 405 drives synchronous belt 407 to rotate in the corresponding direction.

[0033] The adjusting support 402 is bolted to the driven pulley base 401 and is used to adjust the position of the driven pulley 403. In actual operation, when the timing belt 407 is too tight or loose, the bolt on the adjusting support 402 is rotated, causing the adjusting support 402 to move in the direction of or in the opposite direction of the servo motor 405, thereby driving the driven pulley 403 to move, thus achieving the loosening or tightening of the timing belt 407.

[0034] A cable chain groove 408 is provided on one side of the synchronous belt 407. A cable chain 409 connected to the detection mechanism is provided in the cable chain groove 408. One end of the cable chain 409 is fixedly connected to the frame base 306, and the other end of the cable chain 409 is fixedly connected to the cable chain groove 408. The cable chain groove 408 is fixedly set on the platform 1 and is located on one side of the transmission component and adjacent to the transmission component. The cable chain 409 moves synchronously with the frame base 306 in the cable chain groove 408, so that the detection mechanism 5 moves more smoothly during operation, thereby improving the accuracy of detection. At the same time, the cable chain 409 can collect the cables in the detection mechanism 5 to avoid the cables affecting the movement of the transmission component.

[0035] The testing mechanism 5 includes a meter holder 502 set on a meter holder 306, a meter clamp 503 on the meter holder 502, a contact displacement sensor 504 installed on the meter clamp 503, a measuring plate 505 installed at the end of the contact displacement sensor 504, and the measuring plate 505 abutting against the gripper 201.

[0036] The gauge clamp 503 is disposed on the top of the gauge holder 502 and is fixedly connected to the gauge holder 502. The gauge clamp 503 has a mounting hole for mounting the contact displacement sensor 504. The contact displacement sensor 504 passes through the mounting hole and is fixedly connected to the gauge clamp 503. The contact displacement sensor 504 is a telescopic structure. The measuring plate 505 is fixedly connected to the contact displacement sensor 504 and is vertically disposed at the end of the contact displacement sensor 504. The surface of the measuring plate 505 is parallel to the rake 2, thereby improving the accuracy of detecting the flatness of the gripper 201.

[0037] The contact displacement sensor 504 is connected to a vacuum tube 506 at its tail end. The vacuum tube 506 is connected to a vacuum generator 501, which is fixedly mounted on the mounting base 306. The contact displacement sensor 504 is also electrically connected to a communication cable 507 for transmitting measurement data. The communication cable 507 passes through a cable chain 409 and is electrically connected to the control system 6. The measuring plate 505 at the end of the contact displacement sensor 504 extends under the action of the vacuum generator 501 and contacts the head of the gripper pin 201. The measurement data is transmitted back to the control system 6 through the communication cable 507. After the measurement is completed, the measuring plate 505 at the end of the contact displacement sensor 504 is vacuumed back through the vacuum tube 506 under the action of the vacuum generator 501.

[0038] The extension of the mounting bracket 306 extends between the upper and lower sides of the synchronous belt 407. The locking groove 307 has through grooves on both sides to facilitate the placement of the synchronous belt 407, thereby fixing the mounting bracket 306, the pressure block 4010, and the synchronous belt 407 together, thus realizing that the synchronous belt 407, the pressure block 4010, and the mounting bracket 306 are always synchronously driven.

[0039] Platform 1 is provided with a fixed seat 202 for adjusting the position of rake 2. Rake 2 is installed on fixed seat 202 by bolts. At the same time, fixed seat 202 can accommodate multiple rakes 2, so that the entire rake 2 is arranged on fixed seat 202.

[0040] The fixed base 202, slide rail 301, timing belt 407, and drag chain 409 are arranged along the length of platform 1, and the fixed base 202, slide rail 301, timing belt 407, and drag chain 409 are parallel to each other.

[0041] In actual use:

[0042] The entire rake 2 is fixed on the fixed base 202, parallel to the slide rail 301; the slide rail 301 has a standard slider 303, and the meter holder 306 is fixed together with the slider 303; the meter holder 306 is connected to the meter frame 502, and the meter clamp 503 fixed on the meter frame 502 is equipped with a contact displacement sensor 504; one end of the meter holder 306 on the slider 303 extends out and is engaged with the timing belt 407 by a pressure block 4010, thereby connecting the meter holder 306, the pressure block 4010, and the timing belt 407 into a whole; the driving pulley 406 and the driven pulley 403 are fitted onto the two ends of the timing belt 407, and the output shaft of the servo motor 405 is connected to the driving pulley 406. The forward and reverse rotation of the servo motor 405 drives the timing belt 407 to move; the meter holder 306, the slider 303, etc., move together, thus enabling... The contact displacement sensor 504 moves back and forth along the slide rail 301. Based on the positioning of the servo motor 405, it stops precisely when it reaches the position of the gripper needle 201 to be measured. The measuring plate 505 at the end of the contact displacement sensor 504 extends under the action of the vacuum generator 501. The measuring plate 505 contacts the head of the gripper needle 201, and the measurement data is transmitted back to the control system 6 through the communication cable 507. After the measurement is completed, the measuring plate 505 at the end of the contact displacement sensor 504 is vacuumed back through the vacuum tube 506 under the action of the vacuum generator 501. Then the servo motor 405 runs and sends the contact displacement sensor 504 to the next gripper needle 201 position for measurement. The whole process is repeated to complete the flatness measurement of the gripper needles 201 of the entire rake 2 on the fixed base 202.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0044] Although this document frequently uses reference numerals from the figures, such as platform 1, rake 2, gripper 201, fixed base 202, sliding mechanism 3, slide rail 301, slide rail pad 302, slider 303, slide rail stop 304, zero-position sensor 305, gauge holder 306, snap-fit ​​groove 307, drive mechanism 4, driven wheel base 401, adjusting support 402, driven wheel 403, motor bracket 404, servo motor 405, drive pulley 406, synchronous belt 407, cable chain groove 408, cable chain 409, pressure block 4010, detection mechanism 5, vacuum generator 501, gauge holder 502, gauge clamp 503, contact displacement sensor 504, measuring plate 505, vacuum tube 506, and communication cable 507, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A flatness detection device for a flat knitting machine needle gripper, comprising a platform (1) and a rake (2) disposed on the platform (1), wherein a needle gripper (201) is disposed on the rake (2), characterized in that, The platform (1) is equipped with a sliding mechanism (3) and a driving mechanism (4). The sliding mechanism (3) includes a slide rail (301) and a slider (303) slidably connected to the slide rail (301). A table holder (306) is fixedly connected to the slider (303). The driving mechanism (4) includes a transmission component and a pressure block (4010) that is synchronously driven with the transmission component. A snap-fit ​​groove (307) adapted to the pressure block (4010) is formed on the table holder (306). The pressure block (4010) drives the table holder (306) to slide on the slide rail (301). The pressure block (4010) and the slider (303) are arranged on opposite sides of the table holder (306). The table holder (306) is also equipped with a detection mechanism (5) corresponding to the rake (2). The platform (1) is also equipped with a detection mechanism (5) corresponding to the rake (2). A control system (6) electrically connects the drive mechanism (4) and the detection mechanism (5); the detection mechanism (5) includes a meter holder (502) set on the meter holder (306), a meter clamp (503) set on the meter holder (502), a contact displacement sensor (504) installed on the meter clamp (503), a measuring plate (505) installed at the end of the contact displacement sensor (504), and the measuring plate (505) abutting against the gripper (201); the tail of the contact displacement sensor (504) is provided with a vacuum tube (506), the vacuum tube (506) is connected to a vacuum generator (501), the vacuum generator (501) is set on the meter holder (306), and the tail of the contact displacement sensor (504) is also electrically connected to a communication cable (507) for transmitting measurement data.

2. The flatness detection device for the needle gripper of a flat knitting machine according to claim 1, characterized in that, The sliding mechanism (3) also includes a plurality of slide rail pads (302) disposed at the bottom of the slide rail (301), and the slide rail pads (302) are arranged along the length of the slide rail (301). A slide rail stop (304) is provided at one end of the slide rail (301), and a zero position sensor (305) is provided at the other end of the slide rail (301).

3. The flatness detection device for the needle gripper of a flat knitting machine according to claim 1, characterized in that, The drive mechanism (4) includes a motor bracket (404) and a driven wheel base (401) set at both ends of the transmission component. A servo motor (405) for driving the transmission component is installed on the motor bracket (404), and a movable adjustable support (402) is provided on the driven wheel base (401).

4. The flatness detection device for the needle gripper of a flat knitting machine according to claim 3, characterized in that, The transmission assembly includes a driven pulley (403), a driving pulley (406), and a synchronous belt (407). The driven pulley (403) and the driving pulley (406) are located at opposite ends of the synchronous belt (407). The driven pulley (403) is rotatably connected to the adjusting support (402), and the driving pulley (406) is connected to the output shaft of the servo motor (405).

5. The flatness detection device for the needle gripper of a flat knitting machine according to claim 4, characterized in that, The synchronous belt (407) has a drag chain groove (408) on one side, and a drag chain (409) connected to the detection mechanism is provided in the drag chain groove (408). The end of the drag chain (409) is fixedly connected to the frame base (306).

6. The flatness detection device for the needle gripper of a flat knitting machine according to claim 4, characterized in that, The snap-fit ​​groove (307) has through slots on both sides to facilitate the placement of the timing belt (407), and the timing belt (407), pressure block (4010) and frame base (306) are always synchronously driven.

7. The flatness detection device for the needle gripper of a flat knitting machine according to claim 5, characterized in that, The platform (1) is provided with a fixed seat (202) for adjusting the position of the rake (2), and the rake (2) is installed on the fixed seat (202).

8. The flatness detection device for the needle gripper of a flat knitting machine according to claim 7, characterized in that, The fixed base (202), slide rail (301), timing belt (407), and drag chain (409) are arranged along the length of the platform (1), and the fixed base (202), slide rail (301), timing belt (407), and drag chain (409) are parallel to each other.

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