CN112276180B - Efficient machining process for central group of circular weft knitting machine - Google Patents

Efficient machining process for central group of circular weft knitting machine Download PDF

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Publication number
CN112276180B
CN112276180B CN202011146635.4A CN202011146635A CN112276180B CN 112276180 B CN112276180 B CN 112276180B CN 202011146635 A CN202011146635 A CN 202011146635A CN 112276180 B CN112276180 B CN 112276180B
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knitting machine
circular knitting
driving device
triangle
driving
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CN112276180A (en
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李阿扁
赖槿峰
刘奇峰
李俊聪
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Zhangzhou Yongliang Knitting Machinery Co ltd
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Zhangzhou Yongliang Knitting Machinery Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

The invention provides an efficient machining process for a central group of a circular knitting machine, which comprises the following steps: (1) annularly arranging a plurality of triangular blanks to form a looped triangular blank; (2) fixing the looping triangular blank; (3) processing a convex needle path for a knitting needle to slide on the inner side wall of the knitting triangle blank; (4) carrying out parameter detection on the triangular single body with the convex needle path; in the step (2), the positioning device fixes the looping triangular blank; in the step (3), the inner side wall of the knitting cam blank is processed by the rotary milling device, the positioning device rotates to drive the knitting cam blank to rotate, and the rotary milling device processes a convex needle channel for sliding of a knitting needle on the inner side wall of the knitting cam blank. The invention improves the processing efficiency of the triangle, detects the triangle and effectively prolongs the service life of the knitting needle.

Description

Efficient machining process for central group of circular weft knitting machine
Technical Field
The invention relates to the technical field of machining of a central group of a circular knitting machine, in particular to an efficient machining process of the central group of the circular knitting machine.
Background
Circular knitting machine, known as circular weft knitting machine. The circular knitting machine has the advantages of multiple knitting systems, high rotating speed, high yield, quick pattern change, good fabric quality, few working procedures and strong product adaptability, so the circular knitting machine is developed quickly, the central group of the circular knitting machine is the heart of the circular knitting machine and mainly comprises a needle cylinder, a knitting needle, a triangle, a triangular seat and other parts, and the triangular seat is fixed on a fixed part of the central group and is used for driving the triangle on the triangular seat to move up and down.
The triangle is also called as "shan jiao" or "Ling jiao". According to different requirements of knitting varieties of circular knitting machines, the knitting needles and the sinkers are controlled to do reciprocating motion in the needle cylinder grooves. The cam is provided with five types of stitch cam (full stitch cam), tuck cam (half stitch cam), floating cam (plain stitch cam), anti-string cam (fat cam) and pin cam (proofing cam).
In the prior art, a needle path for a knitting needle to slide is usually processed on a single triangular block, and then a plurality of triangular blocks which are processed independently are arranged on a triangular seat to form a stitch-forming triangular.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide an efficient machining process for a central group of a circular knitting machine, which aims to solve the problem that in the background art, a needle path for a knitting needle to slide is machined on a single triangular block in the machining of the triangular block, so that the machining efficiency is low.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-efficiency processing technology of a central group of a circular weft knitting machine comprises the following steps:
(1) annularly arranging a plurality of triangular blanks to form a looped triangular blank;
(2) fixing the looping triangular blank;
(3) processing a convex needle path for a knitting needle to slide on the inner side wall of the knitting triangle blank;
(4) carrying out parameter detection on the triangular single body with the convex needle path;
in the step (2), the positioning device fixes the looping triangular blank;
in the step (3), the rotary milling device processes the inner side wall of the knitting cam blank, the positioning device rotates to drive the knitting cam blank to rotate, and the rotary milling device processes a convex needle channel for a knitting needle to slide on the inner side wall of the knitting cam blank.
Further, in the step (2), the positioning device comprises a positioning component for positioning the looping triangular blank.
Further, the locating component comprises a bearing part for bearing the looping triangular blank and a limiting part for limiting the looping triangular blank on the bearing part.
Further, the bearing part comprises a bearing ring for bearing a plurality of triangular blank monomers.
Further, the limiting part comprises a limiting ring; the upper surface of the limiting ring extends inwards to form a limiting bulge; an accommodating cavity for accommodating the looping triangular blank is formed between the limiting ring and the bearing ring; and the plurality of triangular blank monomers are clamped in the accommodating cavity one by one to form a looped triangular blank.
Further, the height dimension of the accommodating cavity is equal to the height dimension of the single triangular blank.
Further, the depth dimension of the accommodating cavity is smaller than the thickness dimension of the triangular blank monomer.
Furthermore, the positioning assembly further comprises a lifting device for driving the limiting part to lift.
Further, elevating gear includes the connecting portion of being connected with spacing portion to and the first power drive of drive connecting portion lift.
Further, the connecting part comprises a plurality of connecting blocks; it is a plurality of the connecting block encircles the spacing ring setting, and is a plurality of the connecting block is connected in the lateral wall of spacing ring.
Furthermore, a plurality of connecting blocks surround the spacing ring and are arranged at equal intervals.
Furthermore, the first power driving device comprises a plurality of power screw rods which are in one-to-one correspondence with the connecting blocks and a plurality of power motors which are in one-to-one correspondence with the power screw rods; the upper surface of the connecting block is provided with a threaded connecting through hole, one end of the power screw rod is rotatably connected with the connecting block through the threaded connecting through hole, and the other end of the power screw rod is connected with the output end of the power motor.
Further, the positioning device also comprises a first rotation driving device for driving the positioning assembly to rotate.
Further, the first rotary driving device comprises a first gear and a first motor for driving the first gear to rotate; the bearing ring is characterized in that an inner gear meshed with a first gear is arranged on the inner side wall of the bearing ring, the first gear is rotatably connected with the bearing ring through the inner gear, and the output end of the first motor is connected with the first gear.
Further, in the step (3), an arc-shaped convex needle path for the knitting needle to slide is processed on the inner side wall of the knitting triangle blank.
Further, the rotary milling device comprises a rotary milling component for carrying out rotary milling on the inner side wall of the looped triangular blank.
Further, the rotary milling part comprises a rotary milling gun which gradually carries out rotary milling on the inner side wall of the looped triangular blank.
Further, the rotary milling gun includes a rotary milling head in contact with a surface of the looped triangular blank.
Further, the rotary milling part also comprises a first rotary driving device for driving the rotary milling gun to rotate; the output end of the first rotary driving device is connected with the rotary milling gun.
Further, the rotary milling device also comprises a first movement driving device which drives the rotary milling component to move along a preset track.
Further, the first moving driving device comprises a first telescopic driving device for driving the rotary milling component to move along the radial direction, and a first lifting driving device for driving the rotary milling component to move along the height direction.
Further, in the step (4), the detection parameter includes roughness of the surface of the raised needle track.
Further, the upper surface of the triangular convex needle channel is detected through a roughness measuring device.
Further, roughness measurement device carries out the tight fixed device that supports in top including the level setting is used for the triangular support bracket of bearing, to the triangle on the support bracket, carries out frictional force measuring device that frictional force measured to the arch of triangle to and the mechanism that snatchs that overturns after the triangle on the support bracket snatchs.
Further, the friction force measuring device comprises a detecting device which is vertically arranged and used for measuring the protrusion; the detection device comprises a detection head which is contacted with the upper surface of the bulge and slides along a first direction; the detection head comprises a detection piece contacted with the upper surface of the bulge, a slide rail connected with the detection piece in a sliding way, and an elastic support part arranged between the detection piece and the slide rail in an extending way; an inner cavity for the sliding of the detection sheet is formed in the sliding rail; one end of the detection sheet is provided with a clamping block clamped with the slide rail; the propping device comprises a propping rod of a propping triangle, a second power driving device for driving the propping rod to prop and fix and a second lifting driving device for driving the propping rod to lift; the output end of the second lifting driving device is connected with a second power driving device, and the output end of the second power driving device is connected with an abutting rod; the upper surface of the supporting bracket is provided with a containing groove for containing a triangle, one side of the containing groove is provided with a first inlet which corresponds to one end of the bulge and allows the detection head to slide into the bulge, and the other side of the containing groove is provided with a first outlet which corresponds to the other end of the bulge and allows the detection head to slide out of the bulge; the first inlet is provided with a sliding-in end and a sliding-out end, the width from the sliding-in end to the sliding-out end is gradually reduced, and the width of the sliding-out end is equal to the width between two ends of the detection sheet; the bottom surface of the containing groove is provided with a limiting groove for the propping rod to penetrate and prop against the triangle; the length direction of the limiting groove is perpendicular to the length direction of the triangle.
Further, the slide rail comprises a cylindrical sleeve; the cylindrical sleeve is vertically arranged, the interior of the cylindrical sleeve is hollow, and the lower end of the cylindrical sleeve is provided with a through hole through which the detection piece passes; the detection piece penetrates through the through hole and extends into the cylindrical sleeve, and the clamping block of the detection piece is clamped with the bottom wall of the cylindrical sleeve.
Further, the elastic supporting part is vertically arranged between the top end of the detection piece and the inner wall of the top end of the cylindrical sleeve.
Further, the width dimension of the first outlet is larger than the width dimension between two ends of the detection sheet.
Further, the first inlet and the first outlet form a transition track for transition of the detection head; the width dimension of the transition track is larger than the width dimension between the two ends of the detection sheet.
Furthermore, one side of the containing groove is provided with a notch for the grabbing mechanism to grab the triangle.
Further, the detection device also comprises a friction force sensing device for detecting the magnitude of the friction force; the friction force sensing device comprises a connecting seat, a first pressing plate, a second pressing plate, a compression spring and a friction force sensor; one end of the first pressing plate is hinged to the connecting seat, and the other end of the first pressing plate is connected with the detection head; one end of the second pressing plate is fixedly connected with the connecting seat, the compression spring is horizontally arranged between the first pressing plate and the second pressing plate, and the friction force sensor is arranged at one end of the compression spring.
Furthermore, the detection device is also provided with a return device for returning the detection head; the return device comprises a return seat, a return rod, a return block and an elastic return component arranged in the return seat; a cavity for accommodating the return block is formed in the return seat, and the lower end face of the return seat is provided with an opening for the return rod to slide; the return block is connected with the cavity in a sliding manner; one end of the return rod is connected with the return block, and the other end of the return rod is connected with the connecting seat; the elastic return component is arranged in the cavity and is propped against the two sides of the return block.
Furthermore, the elastic return component comprises a first return spring and a second return spring which are horizontally arranged in the return seat; the first return spring is arranged on one side of the return block, and the second return spring is arranged on the other side of the return block.
Further, the friction force measuring device further comprises a third power driving device for driving the detecting device to detect along the first direction, and a third lifting driving device for driving the detecting device to lift.
Further, the third power driving device comprises a driving rod, a driven rod and a second motor for driving the driving rod to swing; one end of the driving rod is connected with the output end of the second motor, and the other end of the driving rod is hinged with the driven rod; one end of the driven rod is connected with the return device.
Further, the grabbing mechanism comprises a grabbing device for grabbing the triangle, a second rotary driving device for driving the grabbing device to rotate, a second moving driving device for driving the grabbing device to move, and a fourth lifting driving device for driving the grabbing device to lift; the output end of the second rotary driving device is connected with the grabbing device, the output end of the second movable driving device is connected with the second rotary driving device, and the output end of the fourth lifting driving device is connected with the second movable driving device.
Further, the grabbing device comprises a grabbing part for grabbing the triangle and an opening and closing driving device for driving the grabbing part to open and close.
Further, the grabbing part comprises a first grabbing hand for grabbing one side of the triangle and a second grabbing hand for grabbing the other side of the triangle; the opening and closing driving device comprises a bidirectional opening and closing air cylinder; the first output end of the bidirectional opening and closing air cylinder is connected with the first gripper, and the second output end of the bidirectional opening and closing air cylinder is connected with the second gripper.
After the structure is adopted, the efficient processing technology of the central group of the circular knitting machine, provided by the invention, has the following beneficial effects:
the plurality of the triangular blanks are annularly arranged into the looping triangular blank, and a convex needle path for a knitting needle to slide is processed on the inner side wall of the looping triangle at one time during processing, so that the processing efficiency of triangular processing is improved; meanwhile, parameter detection is carried out on the processed triangle, whether the roughness of the protrusion of the triangle meets the standard for the sliding of the knitting needle is detected, the knitting needle is protected, and the service life of the knitting needle is prolonged.
Drawings
FIG. 1 is a schematic perspective view of a positioning device and a rotary milling device of a high-efficiency machining process of a center group of a circular knitting machine according to the present invention;
FIG. 2 is a schematic perspective view of a first rotary driving device of the high-efficiency processing technique of a center group of a circular knitting machine according to the present invention;
FIG. 3 is a schematic perspective view of a limiting part of the high-efficiency processing technique of a center group of a circular knitting machine according to the present invention;
FIG. 4 is a schematic perspective view of a roughness measuring device for a high-efficiency machining process of a center group of a circular knitting machine according to the present invention;
FIG. 5 is a schematic top view of a support bracket and a propping device for a high-efficiency machining process of a center group of a circular knitting machine according to the present invention;
FIG. 6 is a schematic structural diagram of a friction force measuring device of the high-efficiency processing technology of a center group of a circular knitting machine in a front view;
FIG. 7 is a schematic perspective view of a grabbing mechanism of the high-efficiency processing technology of a center group of a circular knitting machine according to the present invention;
FIG. 8 is a schematic cross-sectional view of the inspection head of the high-efficiency machining process of the center set of the circular knitting machine according to the present invention;
fig. 9 is a schematic structural view of a friction force sensing device of the high-efficiency processing technology of the central group of the circular knitting machine.
In the figure: 1-positioning device, 11-positioning component, 111-bearing part, 112-limiting part, 1111-bearing ring, 1121-limiting ring, 1122-limiting protrusion, 113-lifting device, 1131-connecting part, 1132-first power driving device, 11311-connecting block, 11321-power screw rod, 11322-power motor, 12-first rotary driving device, 121-first gear, 122-first motor, 114-internal gear, 2-rotary milling device, 21-rotary milling component, 211-rotary milling gun, 2111-rotary milling head, 212-first rotary driving device, 22-first movement driving device, 221-first telescopic driving device, 222-first lifting driving device, 4-bearing bracket, 5-friction force measuring device, 6-grabbing mechanism, 7-abutting device, 41-containing groove, 42-first inlet, 43-first outlet, 44-transition track, 45-notch, 46-limiting groove, 51-detecting device, 511-detecting head, 5111-detecting piece, 5112-sliding rail, 5113-elastic supporting component, 51111-clamping block, 512-friction force sensing device, 5121-connecting seat, 5122-first pressing plate, 5123-second pressing plate, 5124-compression spring, 5125-friction force sensor, 513-returning device, 5131-returning seat, 5132-returning rod, 52-third power driving device, 53-third lifting driving device, 521-driving rod, 522-driven rod, 523-second motor, 61-grabbing device, 62-second rotation driving device, 63-second movement driving device, 64-fourth lifting driving device, 611-grabbing part, 612-opening and closing driving device, 6111-first gripper, 6112-second gripper, 71-propping rod and 72-second power driving device.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
As shown in fig. 1 to 9, the efficient processing technology of the circular knitting machine center group comprises the following steps:
(1) annularly arranging a plurality of triangular blanks to form a looped triangular blank;
(2) fixing the looping triangular blank;
(3) processing a convex needle path for a knitting needle to slide on the inner side wall of the knitting triangle blank;
(4) carrying out parameter detection on the triangular single body with the convex needle path;
in the step (2), the positioning device 1 fixes the looping triangular blank;
in the step (3), the rotary milling device 2 processes the inner side wall of the stitch cam blank, the positioning device 1 rotates to drive the stitch cam blank to rotate, and the rotary milling device 2 processes a convex needle path for a knitting needle to slide on the inner side wall of the stitch cam blank.
Therefore, the plurality of the triangular blanks are annularly arranged into the looping triangular blank, and the convex needle channel for the sliding of the knitting needle is processed on the inner side wall of the looping triangle at one time during processing, so that the processing efficiency of triangular processing is improved; meanwhile, parameter detection is carried out on the processed triangle, whether the protruding roughness of the triangle meets the standard for the sliding of the knitting needle or not is detected, the knitting needle is protected, and the service life of the knitting needle is prolonged.
Preferably, in step (2), the positioning device 1 comprises a positioning assembly 11 for positioning the looping triangular blank. The positioning assembly 11 is used for positioning the stitch cams formed by a plurality of single triangular blank.
Preferably, the positioning assembly 11 includes a bearing portion 111 for bearing the looping triangular blank, and a limiting portion 112 for limiting the looping triangular blank on the bearing portion 111. After a plurality of triangle blanks are sequentially placed on the bearing part 111 to form a looping triangle, the limiting part 112 limits the looping triangle, and displacement of a triangle blank monomer in the processing process is avoided.
Preferably, in order to facilitate the placement of the individual triangular blank, the bearing part 111 includes a bearing ring 1111 for bearing a plurality of individual triangular blank.
Preferably, the position-limiting portion 112 includes a position-limiting ring 1121; a limit protrusion 1122 extends inwards from the upper surface of the limit ring 1121; an accommodating cavity for accommodating the looping triangular blank is formed between the limiting ring 1121 and the bearing ring 1111; the plurality of triangular blank monomers are clamped in the accommodating cavity one by one to form the looped triangular blank. The triangular blank is placed in the accommodating cavity to form a looping triangle fixed in the accommodating cavity, the limiting protrusions 1122 are in contact with the upper surface of the triangular blank, and the triangular blank is fixed on the bearing ring 1111.
Preferably, in order to make the location effect better, the height dimension of holding chamber equals the height dimension of triangle blank monomer.
Preferably, in order to facilitate the machining of the side wall of the triangular blank, the depth dimension of the accommodating cavity is smaller than the thickness dimension of the triangular blank monomer.
Preferably, the positioning assembly 11 further includes a lifting device 113 for driving the limiting portion 112 to lift. The lifting device 113 is used for conveniently fixing a plurality of triangular blanks on the bearing ring 1111 and taking out the triangular blanks after the processing is finished.
Preferably, the lifting device 113 includes a connecting portion 1131 connected to the limiting portion 112, and a first power driving device 1132 for driving the connecting portion 1131 to lift. The first power driving device 1132 drives the connecting part 1131 to move up and down, and the connecting part 1131 drives the limiting part 112 to move up and down, so that the purpose of clamping the looping triangle is achieved.
Preferably, in order to make the elevating movement more stable, the connection portion 1131 includes a plurality of connection blocks 11311; the plurality of connecting blocks 11311 are disposed around the limiting ring 1121, and the plurality of connecting blocks 11311 are connected to the outer side wall of the limiting ring 1121.
Preferably, in order to stabilize the elevating movement, the connecting blocks 11311 are disposed around the limiting ring 1121 at equal intervals.
Preferably, the first power driving means 1132 includes a plurality of power screws 11321 corresponding to the respective connecting blocks 11311 one to one, and a plurality of power motors 11322 corresponding to the respective power screws 11321 one to one; the upper surface of connecting block 11311 is formed with threaded connection through-hole, and power screw 11321's one end passes through threaded connection through-hole and connecting block 11311 and rotates to be connected, and power screw 11321's the other end links together with the output of power motor 11322. And when the power motor 11322 is started, the power screw 11321 rotates to drive the corresponding connecting block 11311 to move up and down, so that the purpose of lifting the limiting part 112 is realized.
Preferably, the positioning device 1 further comprises a first rotation driving device 12 for driving the positioning assembly 11 to rotate. Through first rotary driving device 12, at the uniform velocity rotational positioning subassembly 11, positioning subassembly 11 is rotatory to be driven the triangle of circling at the uniform velocity and is rotated, and the rotatory cutting device of being convenient for processes out protruding needle way on the inside wall of triangle blank of circling.
Preferably, the first rotary driving device 12 includes a first gear 121, and a first motor 122 for driving the first gear 121 to rotate; an internal gear 114 engaged with the first gear 121 is arranged on the inner side wall of the bearing ring 1111, the first gear 121 is rotatably connected with the bearing ring 1111 through the internal gear 114, and the output end of the first motor 122 is connected with the first gear 121. The first motor 122 drives the first gear 121 to rotate, the first gear 121 is meshed with the internal gear 114 to drive the internal gear 114 to rotate, and the internal gear 114 rotates to drive the positioning assembly 11 to rotate.
Preferably, in the step (3), an arc-shaped convex needle path for a knitting needle to slide is processed on the inner side wall of the knitting triangle blank; specifically, the knitting needle is provided with a groove matched with the convex needle channel, and the knitting needle is in sliding connection with the convex needle channel through the groove. The knitting needle is matched with the raised needle channel through the groove, so that the purpose of operation is realized.
Preferably, in order to facilitate the machining of the inner side wall of the triangular blank, the rotary milling device 2 comprises a rotary milling part 21 for rotary milling the inner side wall of the looped triangular blank.
Preferably, in order to facilitate the machining of the inner side wall of the triangular blank, the rotary milling part 21 comprises a rotary milling gun 211 for progressively rotary milling the inner side wall of the looped triangular blank.
Preferably, to facilitate machining of the inside wall of the triangular blank, the rotary milling gun 211 includes a rotary milling head 2111 that contacts the surface of the looped triangular blank.
Preferably, the rotary milling unit 21 further comprises a first rotary driving device 212 for driving the rotary milling gun 211 to rotate; the output of the first rotary drive 212 is coupled to the rotary milling gun 211. The first rotary driving device 212 is driven to rotate the rotary milling head 2111 of the rotary milling component 21, so as to gradually and rotatably cut off the inner side wall of the triangular blank, and specifically, the first rotary driving device 212 is driven by a motor.
Preferably, the rotary milling unit 2 further comprises first movement driving means 22 for driving the rotary milling member 21 along a predetermined trajectory. After the rotary milling part 21 is driven by the mobile driving device to gradually cut into the inner side wall of the triangular blank by a preset depth, the inner side wall of the looping triangle is gradually processed into a closed-loop arc-shaped convex needle path by surrounding the looping triangle.
Preferably, the first movement driving device 22 includes a first telescopic driving device 221 for driving the rotary milling part 21 to move in the radial direction, and a first elevation driving device 222 for driving the rotary milling part 21 to move in the height direction. The first telescopic driving device 221 drives the rotary milling component 21 to gradually cut into the inner side wall by a preset depth, and the first lifting driving device 222 drives the rotary milling component 21 to gradually machine the inner side wall into an arc-shaped convex needle track.
Preferably, in order to ensure the degree of wear of the knitting needle during operation on the raised needle track, in step (4), the detection parameter comprises the roughness of the surface of the raised needle track.
Preferably, the upper surface of the triangular convex needle path is detected by a roughness measuring device. The upper surface of the raised needle channel is detected, so that the degree of friction damage between the knitting needle and the upper surface when the knitting needle works on the raised needle channel is ensured.
Preferably, the roughness measuring device comprises a supporting bracket 4 which is horizontally arranged and used for supporting a triangle, a propping device 7 which tightly props and fixes the triangle on the supporting bracket 4, a friction force measuring device 5 which measures the friction force of the protrusion of the triangle, and a grabbing mechanism 6 which overturns after grabbing the triangle on the supporting bracket 4. The triangle is placed on the supporting bracket 4, the propping device 7 tightly props the triangle to prevent the triangle from displacing in the detection process, and the friction force measuring device 5 measures the friction force of the upper surface of the bulge.
Preferably, the friction measuring device 5 comprises a detecting device 51 vertically arranged for measuring the protrusion; the detecting device 51 includes a detecting head 511 which is in contact with the upper surface of the projection and slides in a first direction; the detection head 511 comprises a detection piece 5111 contacted with the upper surface of the bulge, a sliding rail 5112 connected with the detection piece 5111 in a sliding way, and an elastic supporting part 5113 stretched between the detection piece 5111 and the sliding rail 5112; an inner cavity for the sliding of the detection sheet 5111 is formed in the sliding rail 5112; one end of the detection piece 5111 is provided with a clamping block 51111 clamped with the sliding rail 5112; the propping device 7 comprises a propping rod 71 of a propping triangle, a second power driving device 72 for driving the propping rod 71 to prop and fix, and a second lifting driving device for driving the propping rod 71 to lift; the output end of the second lifting driving device is connected with the second power driving device 72, and the output end of the second power driving device 72 is connected with the abutting rod 71; the upper surface of the support bracket 4 is provided with a receiving groove 41 for receiving the triangle, one side of the receiving groove 41 is provided with a first inlet 42 corresponding to one end of the bulge and allowing the detection head 511 to slide into the bulge, and the other side is provided with a first outlet 43 corresponding to the other end of the bulge and allowing the detection head 511 to slide out of the bulge; the first inlet 42 has a sliding-in end and a sliding-out end, the width from the sliding-in end to the sliding-out end gradually decreases, and the width of the sliding-out end is equal to the width between two ends of the detection piece 5111; the bottom surface of the accommodating groove 41 is provided with a limit groove 46 for the propping rod 71 to penetrate and prop against the triangle; the length direction of the limiting groove 46 is perpendicular to the length direction of the triangle. Placing the triangle in the containing groove 41 of the support bracket 4, driving the propping rod 71 to move upwards by the second lifting driving device of the propping device 7, after the triangle passes through the limiting groove 46, driving the propping rod 71 to slide in the limiting groove 46 by the second driving device 72, propping and fixing one side of the triangle, detecting the friction force on the upper surface of the triangle from the first direction by the detecting head 511 of the detecting device 51 of the friction force measuring device 5, after the detection is qualified, moving the propping rod 71 backwards for a certain distance (avoiding scraping the propping rod 71 and the triangle), then moving downwards, grabbing the triangle by the grabbing mechanism 6, then lifting to a preset position, turning the triangle 180 degrees, placing the triangle into the containing groove 41 again, propping and fixing the other side of the triangle by the propping rod 71, detecting the second friction force detection on the upper surface of the triangle from the first direction by the detecting head 511, after the detection, moving the propping rod 71 backwards for a certain distance, then moving downwards, stopping the supporting and fixing operation of the triangle, and completing the detection of the friction force on the upper surface of the bulge; the elastic supporting part 5113 enables the detection piece 5111 to be better contacted with the upper surface of the bulge, so that the detection error is reduced; the detection piece 5111 is slidably connected with the sliding rail 5112, so that when the detection piece 5111 is pressed downwards, the downward pressure is buffered through the sliding rail 5112 and the elastic supporting component 5113, the detection piece 5111 is not easy to damage, and the service life of the detection head 511 is prolonged.
Preferably, the sliding track 5112 comprises a cylindrical sleeve; the cylindrical sleeve is vertically arranged, the interior of the cylindrical sleeve is hollow, and the lower end of the cylindrical sleeve is provided with a through hole through which the detection piece 5111 passes; the detection piece 5111 passes through the through hole and extends into the cylindrical sleeve, and the clamping block 51111 of the detection piece 5111 is clamped with the bottom wall of the cylindrical sleeve. When the detection piece 5111 is placed to the upper surface of the bulge, the pressure applied to the detection piece 5111 and the upper surface in contact is better buffered when the detection piece 5111 is downward, so that the detection piece 5111 is in close contact with the upper surface of the bulge and rises in the cylindrical sleeve, the detection piece 5111 is prevented from being broken due to the overlarge downward pressure, the service life of the detection piece 5111 is prolonged, meanwhile, when the detection head 511 is lifted, the detection piece 5111 is clamped with the inner wall of the bottom of the cylindrical sleeve, and the detection piece 5111 is prevented from falling.
Preferably, the elastic supporting member 5113 is vertically disposed between the top end of the sensing piece 5111 and the inner wall of the top end of the cylindrical sleeve. The elastic supporting member 5113 enables the detection piece 5111 to be tightly attached to the upper surface of the bulge, so that the precision of friction force measurement is improved.
Preferably, the width dimension of the first outlet 43 is greater than the width dimension between both ends of the sensing piece 5111. So that the detection piece 5111 does not collide when it slides out of the first outlet 43.
Preferably, the first inlet 42 and the first outlet 43 are formed with a transition track 44 that the detection head 511 transitions; the width dimension of the transition track 44 is greater than the width dimension between the ends of the detection plate 5111. Through transition track 44, the purpose that detection device 51 returns to the initial position after detecting protruding upper surface is realized, and the width size of transition track 44 is greater than the width size between detection piece 5111 both ends, avoids detecting head 511 to pass through the friction and damage in transition track 44, prolongs the life of detecting head 511.
Preferably, one side of the receiving groove 41 is provided with a notch 45 for the grabbing mechanism 6 to grab a triangle. The grabbing mechanism 6 realizes the purpose of grabbing the triangle and turning the triangle through the gap 45.
Preferably, the detecting device 51 further comprises a friction force sensing device 512 for detecting the magnitude of the friction force; the friction force sensing device 512 comprises a connecting seat 5121, a first pressure plate 5122, a second pressure plate 5123, a compression spring 5124 and a friction force sensor 5125; one end of the first pressing plate 5122 is hinged to the connecting seat 5121, and the other end is connected with the detection head 511; one end of the second pressing plate 5123 is fixedly connected with the connecting seat 5121, the compression spring 5124 is horizontally installed between the first pressing plate 5122 and the second pressing plate 5123, and the friction force sensor 5125 is installed at one end of the compression spring 5124. When the detection head 511 detects on the upper surface of the protrusion, the detection piece 5111 of the detection head 511 is subjected to a backward friction force, so that the first pressure plate 5122 is subjected to the backward friction force to move backward, the first pressure plate 5122 moves backward to drive the compression spring 5124 to move backward and compress the second pressure plate 5123, the friction force sensor 5125 receives the force from the compression of the compression spring 5124, and the friction force sensor 5125 determines the magnitude of the friction force on the upper surface of the protrusion.
Preferably, the detecting device 51 is further provided with a returning device 513 for returning the detecting head 511; the return device 513 comprises a return seat 5131, a return rod 5132, a return block and an elastic return component arranged in the return seat 5131; a cavity for accommodating the return block is formed in the return seat 5131, and the lower end face of the return seat is provided with an opening for the sliding of the return rod 5132; the return block is connected with the cavity in a sliding way; one end of the return rod 5132 is connected with the return block, and the other end is connected with the connecting seat 5121; the elastic return component is arranged in the cavity and is propped against the two sides of the return block. When the detection head 511 enters the transition track 44 and contacts with the transition track 44, the return rod 5132 moves left and right in the return seat 5131 to drive the detection head 511 to move left and right, so as to buffer the force generated when the detection head 511 contacts with the transition track 44, thereby better protecting the detection head 511 from being damaged.
Preferably, the elastic return means includes a first return spring and a second return spring horizontally installed in the return seat 5131; the first return spring is arranged on one side of the return block, and the second return spring is arranged on the other side of the return block. Through first return spring and second return spring, realize the purpose to return pole 5132 return, and then realize the purpose to detecting head 511 return.
Preferably, the friction force measuring device 5 further includes a third power driving device 52 for driving the detecting device 51 to detect in the first direction, and a third elevation driving device 53 for driving the detecting device 51 to elevate. The third power driving device 52 drives the detecting device 51 to enter the first inlet 42 to detect the friction force of the upper surface of the protrusion, and the third lifting driving device 53 achieves the purpose of lifting the detecting device 51, so as to avoid interference with the grabbing mechanism 6.
Preferably, the third power driving means 52 includes a driving link 521, a driven link 522, and a second motor 523 for driving the driving link 521 to swing; one end of the driving rod 521 is connected with the output end of the second motor 523, and the other end of the driving rod 521 is hinged with the driven rod 522; one end of the driven rod 522 is connected to the return means 513. The second motor 523 drives the driving lever 521 to rotate, and the driving lever 521 drives the driven lever 522 to swing along a predetermined track, so that the driven lever 522 drives the detecting device 51 to slide along the predetermined track.
Preferably, the grabbing mechanism 6 comprises a grabbing device 61 for grabbing the triangle, a second rotation driving device 62 for driving the grabbing device 61 to rotate, a second movement driving device 63 for driving the grabbing device 61 to move, and a fourth lifting driving device 64 for driving the grabbing device 61 to lift; the output end of the second rotation driving device 62 is connected to the gripping device 61, the output end of the second movement driving device 63 is connected to the second rotation driving device 62, and the output end of the fourth elevation driving device 64 is connected to the second movement driving device 63. The grabbing device 61 is driven to move downwards by the fourth lifting driving device 64, after the grabbing device 61 grabs the triangle, the grabbing device rises to a preset height, the second rotating driving device 62 is driven to rotate the grabbing device 61 by 180 degrees, the triangle is rotated by 180 degrees, after the triangle is rotated, the second moving driving device 63 is driven to move for a preset distance, the fourth lifting driving device 64 is driven to move downwards, the triangle is placed into the accommodating groove 41, the purpose of rotating the triangle is achieved, and secondary detection is convenient to the upper surface of the triangle protrusion.
Preferably, the grasping means 61 includes a grasping member 611 that grasps the triangle, and an opening and closing driving means 612 that drives the grasping member 611 to open and close. The opening/closing driving unit 612 is driven to make the grasping member 611 grasp the triangle.
Preferably, the gripping part 611 includes a first grip 6111 gripping one side of the triangle, and a second grip 6112 gripping the other side of the triangle; the opening and closing driving device 612 comprises a bidirectional opening and closing cylinder; the first output end of the bidirectional opening and closing cylinder is connected with the first gripper 6111, and the second output end of the bidirectional opening and closing cylinder is connected with the second gripper 6112. The bidirectional opening and closing cylinder drives the first gripper 6111 and the second gripper 6112 to grip the triangle.
The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.

Claims (38)

1. The efficient machining process of the central group of the circular weft knitting machine is characterized by comprising the following steps of:
(1) annularly arranging a plurality of triangular blanks to form a looped triangular blank;
(2) fixing the looping triangular blank;
(3) processing a convex needle path for a knitting needle to slide on the inner side wall of the knitting triangle blank;
(4) carrying out parameter detection on the triangular single body with the convex needle path;
in the step (2), the positioning device fixes the looping triangular blank;
in the step (3), the rotary milling device processes the inner side wall of the knitting cam blank, the positioning device rotates to drive the knitting cam blank to rotate, and the rotary milling device processes a convex needle channel for a knitting needle to slide on the inner side wall of the knitting cam blank.
2. The efficient machining process of the central group of the circular knitting machine according to claim 1, characterized in that: in the step (2), the positioning device comprises a positioning assembly for positioning the looping triangular blank.
3. The efficient machining process of the circular knitting machine center group according to claim 2, characterized in that: the positioning assembly comprises a bearing part for bearing the looping triangular blank and a limiting part for limiting the looping triangular blank on the bearing part.
4. The efficient machining process of the central group of the circular knitting machine according to claim 3, characterized in that: the bearing part comprises a bearing ring for bearing a plurality of triangular blank monomers.
5. The efficient machining process of the central group of the circular knitting machine according to claim 4, characterized in that: the limiting part comprises a limiting ring; the upper surface of the limiting ring extends inwards to form a limiting bulge; an accommodating cavity for accommodating the looping triangular blank is formed between the limiting ring and the bearing ring; and the plurality of triangular blank monomers are clamped in the accommodating cavity one by one to form a looped triangular blank.
6. The efficient machining process of the central group of the circular knitting machine according to claim 5, characterized in that: the height dimension of the accommodating cavity is equal to that of the single triangular blank.
7. The efficient machining process of the central group of the circular knitting machine according to claim 6, characterized in that: the depth dimension of the accommodating cavity is smaller than the thickness dimension of the triangular blank monomer.
8. The efficient machining process of the central group of the circular knitting machine according to claim 7, characterized in that: the positioning assembly further comprises a lifting device for driving the limiting part to lift.
9. The efficient machining process of the circular knitting machine center group according to claim 8, characterized in that: the lifting device comprises a connecting part connected with the limiting part and a first power driving device for driving the connecting part to lift.
10. The efficient machining process of the central group of the circular knitting machine according to claim 9, characterized in that: the connecting part comprises a plurality of connecting blocks; a plurality of the connecting block encircles the setting of spacing ring, and is a plurality of the connecting block is connected in the lateral wall of spacing ring.
11. The efficient processing technology of the circular knitting machine center group according to claim 10, characterized in that: a plurality of the connecting blocks surround the limiting ring and are arranged at equal intervals.
12. The efficient processing technology of the central group of the circular knitting machine according to claim 11, characterized in that: the first power driving device comprises a plurality of power screw rods which are in one-to-one correspondence with the connecting blocks and a plurality of power motors which are in one-to-one correspondence with the power screw rods; the upper surface of the connecting block is provided with a threaded connecting through hole, one end of the power screw rod is rotatably connected with the connecting block through the threaded connecting through hole, and the other end of the power screw rod is connected with the output end of the power motor.
13. The efficient processing technology of the central group of the circular knitting machine according to claim 12, characterized in that: the positioning device also comprises a first rotary driving device for driving the positioning component to rotate.
14. The efficient processing technology of the circular knitting machine center group according to claim 13, characterized in that: the first rotary driving device comprises a first gear and a first motor for driving the first gear to rotate; the bearing ring is characterized in that an inner gear meshed with a first gear is arranged on the inner side wall of the bearing ring, the first gear is rotatably connected with the bearing ring through the inner gear, and the output end of the first motor is connected with the first gear.
15. The efficient processing technology of the circular knitting machine center group according to claim 14, characterized in that: in the step (3), an arc-shaped convex needle path for a knitting needle to slide is processed on the inner side wall of the knitting triangle blank.
16. The efficient machining process of the central group of the circular knitting machine according to claim 15, characterized in that: the rotary milling device comprises a rotary milling component for rotationally milling the inner side wall of the looped triangular blank.
17. The efficient processing technology of the circular knitting machine center group according to claim 16, characterized in that: the rotary milling part comprises a rotary milling gun which gradually performs rotary milling on the inner side wall of the looped triangular blank.
18. The efficient processing technology of the central group of the circular knitting machine according to claim 17, characterized in that: the rotary milling gun comprises a rotary milling head which is in contact with the surface of the looping triangular blank.
19. The efficient processing technology of the circular knitting machine center group according to claim 18, characterized in that: the rotary milling part also comprises a first rotary driving device for driving the rotary milling gun to rotate; the output end of the first rotary driving device is connected with the rotary milling gun.
20. The efficient processing technology of the circular knitting machine center group according to claim 19, characterized in that: the rotary milling device also comprises a first movement driving device which drives the rotary milling component to move along a preset track.
21. The efficient processing technology of the circular knitting machine center group according to claim 20, characterized in that: the first moving driving device comprises a first telescopic driving device and a first lifting driving device, wherein the first telescopic driving device drives the rotary milling part to move along the radial direction, and the first lifting driving device drives the rotary milling part to move along the height direction.
22. The efficient processing technology of the circular knitting machine center group according to claim 21, characterized in that: in step (4), the detection parameter includes roughness of the surface of the raised needle track.
23. The efficient processing technology of the circular knitting machine center group according to claim 22, characterized in that: and detecting the upper surface of the triangular convex needle channel by a roughness measuring device.
24. The efficient processing technology of the circular knitting machine center group according to claim 23, characterized in that: the roughness measuring device comprises a supporting bracket horizontally arranged and used for supporting a triangle, a supporting device for tightly supporting and fixing the triangle on the supporting bracket, a friction force measuring device for measuring the friction force of the protrusion of the triangle, and a grabbing mechanism for grabbing and overturning the triangle on the supporting bracket.
25. The efficient processing technology of the circular knitting machine center group according to claim 24, characterized in that: the friction force measuring device comprises a detecting device which is vertically arranged and used for measuring the protrusion; the detection device comprises a detection head which is contacted with the upper surface of the bulge and slides along a first direction; the detection head comprises a detection piece contacted with the upper surface of the bulge, a slide rail connected with the detection piece in a sliding manner, and an elastic supporting part arranged between the detection piece and the slide rail in an extending manner; an inner cavity for the sliding of the detection sheet is formed in the sliding rail; one end of the detection sheet is provided with a clamping block clamped with the slide rail; the propping device comprises a propping rod of a propping triangle, a second power driving device for driving the propping rod to prop and fix and a second lifting driving device for driving the propping rod to lift; the output end of the second lifting driving device is connected with a second power driving device, and the output end of the second power driving device is connected with an abutting rod; the upper surface of the supporting bracket is provided with a containing groove for containing a triangle, one side of the containing groove is provided with a first inlet which corresponds to one end of the bulge and allows the detection head to slide into the bulge, and the other side of the containing groove is provided with a first outlet which corresponds to the other end of the bulge and allows the detection head to slide out of the bulge; the first inlet is provided with a sliding-in end and a sliding-out end, the width from the sliding-in end to the sliding-out end is gradually reduced, and the width of the sliding-out end is equal to the width between two ends of the detection piece; the bottom surface of the containing groove is provided with a limiting groove for the propping rod to penetrate and prop against the triangle; the length direction of the limiting groove is perpendicular to the length direction of the triangle.
26. The efficient processing technology of the central group of the circular knitting machine as claimed in claim 25, characterized in that: the slide rail comprises a cylindrical sleeve; the cylindrical sleeve is vertically arranged, the interior of the cylindrical sleeve is hollow, and the lower end of the cylindrical sleeve is provided with a through hole through which the detection piece passes; the detection piece penetrates through the through hole and extends into the cylindrical sleeve, and a clamping block of the detection piece is clamped with the bottom wall of the cylindrical sleeve.
27. The efficient processing technology of the central group of the circular knitting machine according to claim 26, characterized in that: the elastic supporting component is vertically arranged between the top end of the detection piece and the inner wall of the top end of the cylindrical sleeve.
28. The efficient processing technology of the central group of the circular knitting machine according to claim 27, characterized in that: the width dimension of the first outlet is larger than the width dimension between two ends of the detection sheet.
29. The efficient processing technology of the circular knitting machine center group according to claim 28, characterized in that: the first inlet and the first outlet are provided with transition tracks for transition of the detection head; the width dimension of the transition track is larger than the width dimension between the two ends of the detection sheet.
30. The efficient processing technology of the circular knitting machine center group according to claim 29, characterized in that: one side of the containing groove is provided with a notch for the grabbing mechanism to grab the triangle.
31. The efficient processing technology of the central group of the circular knitting machine as claimed in claim 30, characterized in that: the detection device also comprises a friction force sensing device for detecting the magnitude of the friction force; the friction force sensing device comprises a connecting seat, a first pressing plate, a second pressing plate, a compression spring and a friction force sensor; one end of the first pressing plate is hinged to the connecting seat, and the other end of the first pressing plate is connected with the detection head; one end of the second pressing plate is fixedly connected with the connecting seat, the compression spring is horizontally arranged between the first pressing plate and the second pressing plate, and the friction force sensor is arranged at one end of the compression spring.
32. The efficient processing technology of the central group of the circular knitting machine as claimed in claim 31, characterized in that: the detection device is also provided with a return device for returning the detection head; the return device comprises a return seat, a return rod, a return block and an elastic return component arranged in the return seat; a cavity for accommodating the return block is formed in the return seat, and the lower end face of the return seat is provided with an opening for the return rod to slide; the return block is connected with the cavity in a sliding manner; one end of the return rod is connected with the return block, and the other end of the return rod is connected with the connecting seat; the elastic return component is arranged in the cavity and is propped against the two sides of the return block.
33. The efficient processing technology of the circular knitting machine center group according to claim 32, characterized in that: the elastic return component comprises a first return spring and a second return spring which are horizontally arranged in the return seat; the first return spring is arranged on one side of the return block, and the second return spring is arranged on the other side of the return block.
34. The efficient processing technology of the central group of the circular knitting machine as claimed in claim 33, characterized in that: the friction force measuring device further comprises a third power driving device and a third lifting driving device, wherein the third power driving device is used for driving the detecting device to detect along the first direction, and the third lifting driving device is used for driving the detecting device to lift.
35. The efficient processing technology of the circular knitting machine center group according to claim 34, characterized in that: the third power driving device comprises a driving rod, a driven rod and a second motor for driving the driving rod to swing; one end of the driving rod is connected with the output end of the second motor, and the other end of the driving rod is hinged with the driven rod; one end of the driven rod is connected with the return device.
36. The efficient processing technology of the central group of the circular knitting machine as claimed in claim 35, characterized in that: the grabbing mechanism comprises a grabbing device for grabbing the triangle, a second rotary driving device for driving the grabbing device to rotate, a second moving driving device for driving the grabbing device to move, and a fourth lifting driving device for driving the grabbing device to lift; the output end of the second rotary driving device is connected with the grabbing device, the output end of the second movable driving device is connected with the second rotary driving device, and the output end of the fourth lifting driving device is connected with the second movable driving device.
37. The efficient processing technology of the circular knitting machine center group according to claim 36, characterized in that: the grabbing device comprises a grabbing part for grabbing the triangle and an opening and closing driving device for driving the grabbing part to open and close.
38. The efficient processing technology of the circular knitting machine center group according to claim 37, characterized in that: the grabbing component comprises a first grabbing hand for grabbing one side of the triangle and a second grabbing hand for grabbing the other side of the triangle; the opening and closing driving device comprises a bidirectional opening and closing air cylinder; the first output end of the bidirectional opening and closing air cylinder is connected with the first gripper, and the second output end of the bidirectional opening and closing air cylinder is connected with the second gripper.
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Application publication date: 20210129

Assignee: Fujian Yonghong Knitting Machinery Co.,Ltd.

Assignor: ZHANGZHOU YONGLIANG KNITTING MACHINERY CO.,LTD.

Contract record no.: X2023980049728

Denomination of invention: An Efficient Processing Technology for Center Group of Circular Weft Machine

Granted publication date: 20220527

License type: Common License

Record date: 20231205