A needle picking device for defective products in the production of textile knitting needles

Abstract

A needle picking device for defective products in textile knitting needle production, belonging to the technical field of sorting equipment. In order to solve the problem that the existing material distributor cannot effectively and quickly detect the qualification of knitting needles during the coarse and fine sorting of knitting needles, and thus cannot sort out defective products; through the cooperation of the needle placing inclined table and the arc-shaped limiting plate, the knitting needles stacked on the top of the needle placing inclined table slide onto the turning plate in the blanking channel in sequence intermittently and orderly. With the help of a size scanner, the thickness of the knitting needles is identified. The turning plate deflects selectively so that the knitting needles slide to a specified adjustment box at the bottom of the blanking box on the turning plate. The knitting needles fall vertically into the inner hole of the installation bobbin in the detection cylinder at the bottom of the adjustment box, thereby causing changes in the magnetic field and eddy current of the detection coil on the outer wall of the installation bobbin. The detection alarm determines and identifies defective knitting needles according to the eddy current changes. The knitting needles slide out of the sorting box through different sorting channels on the sorting inclined plate, thus completing the sorting of defective knitting needles, which is convenient and practical.

Description

Technical Field

[0001] The present invention relates to the technical field of sorting equipment, and specifically, to a needle picking device for defective products in textile knitting needle production. Background Art

[0002] Knitting needles are the core parts of knitting machines, used to knit yarns into coils and connect the coils in series to form knitted fabrics. Whether the knitting needles meet the standards during production directly affects the quality of the knitted fabrics. Therefore, the detection and sorting of knitting needles are particularly important.

[0003] The patent document with the publication number CN208960411U discloses a thick and thin knitting needle sorting machine, which includes a frame, a screening and sorting device, a material receiving device, a controller, a control panel, and a power supply module; a workbench is provided on the frame, and the screening and sorting device is arranged on one side of the workbench, and a material receiving device is provided on the workbench; the screening and sorting device includes a housing, a storage box arranged inside the housing, a positioning mechanism arranged inside the housing, and a material guiding mechanism arranged inside the housing. The positioning mechanism includes a positioning plate, a sliding groove, and a first servo motor. The material guiding mechanism includes a first telescopic rod, a discharge chute, a slider, and a second servo motor; the material receiving device includes a material receiving box, a driving motor, a second telescopic rod, and a sliding rail. The sorting machine detects standard parts, thick parts, and thin parts through the screening and sorting device, and at the same time automatically places the screened standard parts, thick parts, and thin parts into the corresponding material receiving cavities through the material receiving mechanism, greatly improving the screening and sorting efficiency and saving manpower and material resources. However, although the existing sorting machine can sort the thickness of knitting needles, it cannot effectively and quickly detect whether there are defects such as cracks on the surfaces of many knitting needles, so as to sort out the defective products among them.

[0004] Therefore, we introduce a needle picking device for defective products in textile knitting needle production. Summary of the Invention

[0005] The purpose of the present invention is to provide a needle picking device for defective products in textile knitting needle production, aiming to solve the problem in the above background art that when the existing sorting machine sorts the thickness of knitting needles, it cannot effectively and quickly detect the qualification of knitting needles, so as to sort out the defective products.

[0006] To achieve the above object, the present invention provides the following technical solutions: A defective product selection and needle discharging device for textile knitting needles, including a sorting box, a maintenance door and a PLC controller arranged on the outer wall of the sorting box. One end of the top of the sorting box is provided with a feeding box. A needle swinging inclined table is fixedly connected to the bottom plate on one side of the feeding box. A feeding channel is arranged between the end of the needle swinging inclined table and the inner wall of the feeding box. An arc-shaped limiting plate is fixedly connected to the inner wall of the feeding box above the end of the needle swinging inclined table. On both sides of the bottom of the feeding box corresponding to the feeding channel, adjustment boxes are respectively fixedly connected. On both sides of the bottom port of each adjustment box, fixing rods are fixedly connected. The bottom of the fixing rods is fixedly connected to both side walls at the top of the detection cylinder. The detection cylinder is suspended in the sorting box. An installation wire cylinder is fixedly connected inside the detection cylinder. A detection coil is wound around the outer wall of the installation wire cylinder. A detection alarm is fixedly connected to the outer wall of the detection cylinder. A sorting inclined plate is arranged between the inner walls of the sorting box below the detection cylinder. The end of the sorting inclined plate extends through and outside the sorting box. A turning plate is movably arranged between the inner walls of the feeding channel. A size scanner is fixedly connected to the inner wall of the feeding box below the arc-shaped limiting plate. The size scanner is suspended directly above the turning plate.

[0007] Further, the end of the arc-shaped limiting plate is suspended above the end of the needle swinging inclined table. An installation cavity is arranged inside the needle swinging inclined table. A T-shaped plate penetrates through the needle swinging inclined table corresponding to the end of the arc-shaped limiting plate. The bottom plate of the T-shaped plate is suspended in the installation cavity. Both sides of the bottom plate of the T-shaped plate are movably sleeved on the outer wall of the guiding rod. A buffer spring is wound around the outer wall of the guiding rod below the bottom plate of the T-shaped plate. A traction rope is fixedly connected to the middle of the lower end of the bottom plate of the T-shaped plate. The traction rope is wound around the outer wall of the wire winding wheel arranged on the bottom plate of the installation cavity, and its end is fixedly connected to the electric piston expansion rod.

[0008] Further, the end of the electric piston expansion rod is fixedly connected to the bottom plate of the installation cavity. When the buffer spring maintains a normal diastolic state, the top of the T-shaped plate extends above the needle swinging inclined table and fits the bottom of the end of the arc-shaped limiting plate. At this time, the traction rope is taut, and the electric piston expansion rod is in the maximum extended state.

[0009] Further, the inside of the adjustment box is arranged in a funnel shape. A guiding needle tube is fixedly connected to the bottom of the funnel. The lower end of the guiding needle tube extends to the outside of the bottom of the adjustment box, and the guiding needle tube is correspondingly suspended above the middle hole of the installation wire cylinder.

[0010] Further, a ring-shaped tube is arranged near the top of the side wall of the funnel cavity of the adjustment box. One end of the outer wall of the ring-shaped tube is communicated with the air inlet valve tube. Air cylinders are evenly spaced and fixedly connected to the inner side outer wall of the ring-shaped tube. The end of the air cylinder is sleeved with a piston rod. The end of the piston rod extends into the funnel cavity of the adjustment box, and its end is fixedly connected to an adjustment top block.

[0011] Furthermore, an annular cavity is provided inside the detection cylinder below the installation bobbin. The bottom of the annular cavity is filled with fluorescent liquid. A telescopic support is movably connected to the lower end of the top plate of the annular cavity. The end of the telescopic support is movably connected to a marking roller. An electric telescopic rod is movably connected to the side wall of the moving rod of the marking roller, and the end of the electric telescopic rod is movably connected to the inner wall of the annular cavity. A communication hole is provided on the side wall of the annular cavity near the middle hole.

[0012] Furthermore, the communication hole is provided on the side wall of the annular cavity above the fluorescent liquid, and the communication hole corresponds to the marking roller. The marking roller is suspended above the fluorescent liquid at the communication hole. A moving plug board is provided inside the detection cylinder between the annular cavity and the installation bobbin, and the moving board of the moving plug board is suspended above the middle hole of the annular cavity.

[0013] Furthermore, the turning plate includes a buffer plate movably arranged between the inner walls of the blanking channel and a guiding groove arranged at the top of the buffer plate. The two ends of the buffer plate respectively correspond to the adjustment boxes on both sides of the bottom of the blanking box. A winding disc is movably arranged on the inner wall of the blanking channel below the middle shaft of the buffer plate through a rotating shaft. Adjusting ropes are respectively wound on the outer wall of the winding disc, and the ends of the adjusting ropes are fixedly connected to the bottom of the end of the buffer plate.

[0014] Furthermore, two groups of the same adjusting ropes are wound on the outer wall of the winding disc, and the two groups of adjusting ropes are respectively wound in opposite directions. After the two groups of adjusting ropes are wound the same number of turns, they are then connected to the buffer plate.

[0015] Furthermore, a long partition board is fixedly connected to the middle of the top slope of the sorting inclined plate. Short partition boards are respectively fixedly connected to the top slopes of the sorting inclined plate on both sides of the long partition board. A limiting rod is fixedly connected to the outer wall of one side of the upper end of the short partition board in an inclined manner. An annular guiding plate is movably sleeved on the outer wall of the limiting rod. A guiding chute is provided on the outer wall of one side of the short partition board, and a moving block is movably engaged in the guiding chute. An active connecting rod is movably connected to the outer wall of the moving block, and the other end of the active connecting rod is movably connected to the side wall of the end of one end of the annular guiding plate. The outer wall of the lower end of the moving block on the inclined side is fixedly connected to a hydraulic telescopic rod on the side wall of the short partition board.

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

[0017] An out-needle device for selecting defective products in the production of textile knitting needles proposed by the present invention, through the cooperation of a needle-arranging inclined table and an arc-shaped limiting plate, enables the knitting needles stacked on the top of the needle-arranging inclined table to slide onto the turning plate in the blanking channel in sequence intermittently and orderly. After the size scanner on the inner wall of the blanking box identifies the thickness of the knitting needles, the turning plate deflects selectively, so that the knitting needles with different thicknesses slide onto the designated adjustment box at the bottom of the blanking box on the turning plate. The knitting needles fall vertically into the inner hole of the installation spool in the detection cylinder at the bottom of the adjustment box, thereby causing changes in the magnetic field and eddy current of the detection coil on the outer wall of the installation spool. The detection alarm determines and identifies defective products based on the changes in the magnetic field and eddy current of the detection coil caused by the knitting needles. After the knitting needles are identified, they fall onto the sorting inclined plate, and the qualified and defective knitting needles slide out of the sorting box through different sorting channels according to the thickness, thus completing the sorting of defective knitting needles, which is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the internal structure of the sorting box of the present invention;

[0020] Figure 3 is a schematic diagram of the installation structure of the blanking box and the detection cylinder of the present invention;

[0021] Figure 4 is a cross-sectional view of the blanking box of the present invention;

[0022] Figure 5 is a schematic diagram of the structure of the detection cylinder of the present invention;

[0023] Figure 6 is a schematic diagram of the installation structure of the detection cylinder and the installation spool of the present invention;

[0024] Figure 7 is of the present invention Figure 4 enlarged schematic diagram of part A;

[0025] Figure 8 is a schematic diagram of the installation structure of the marking roller of the present invention;

[0026] Figure 9 is a schematic diagram of the structure of the turning plate of the present invention;

[0027] Figure 10 is a cross-sectional view of the adjustment box of the present invention;

[0028] Figure 11 is of the present invention Figure 10 enlarged schematic diagram of part B;

[0029] Figure 12 is a schematic diagram of the structure of the sorting inclined plate of the present invention;

[0030] Figure 13 Schematic diagram of the installation structure of the short partition board and the annular guide board of the present invention.

[0031] In the figure: 1, sorting box; 2, maintenance door; 3, PLC controller; 4, blanking box; 5, pendulum needle inclined table; 51, installation cavity; 52, T-shaped plate; 53, guide rod; 54, buffer spring; 55, traction rope; 56, wire winding wheel; 57, electric piston telescopic rod; 6, arc-shaped limiting plate; 7, adjustment box; 71, guide needle tube; 72, annular tube; 73, intake valve tube; 74, air cylinder; 75, piston rod; 76, adjustment top block; 8, fixed rod; 9, detection cylinder; 901, moving plug board; 91, annular cavity; 92, fluorescent liquid; 93, telescopic bracket; 94, marking roller; 95, electric telescopic rod; 96, communication hole; 10, installation wire reel; 11, detection coil; 12, detection alarm; 13, sorting inclined plate; 131, long partition board; 132, short partition board; 133, limiting rod; 134, annular guide board; 135, guide chute; 136, moving block; 137, movable connecting rod; 138, hydraulic telescopic rod; 14, turning plate; 141, buffer plate; 142, guide groove; 143, wire reel; 144, adjusting rope; 15, dimension scanner. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 , a defective product sorting and needle-taking device applied to the production of textile knitting needles, including a sorting box 1, a maintenance door 2 and a PLC controller 3 are sequentially arranged on the outer wall of the front end cover of the sorting box 1, and a blanking box 4 is arranged at one end of the top of the sorting box 1, and the lower end of the blanking box 4 penetrates and extends into the sorting box 1.

[0034] In order to solve the problem that the existing material sorting machine cannot effectively and quickly detect the qualification of knitting needles during the rough and fine sorting of knitting needles, so as to sort out defective products, please refer to Figures 1 - 7 and Figures 9 - 11 , the following preferred technical solutions are provided:

[0035] On one side of the bottom plate of the blanking box 4, a swing needle inclined platform 5 is fixedly connected. The knitting needles are sequentially placed on the top of the swing needle inclined platform 5. A blanking channel is arranged between the end of the swing needle inclined platform 5 and the inner wall of the blanking box 4. And on the inner wall of the blanking box 4 above the end of the swing needle inclined platform 5, an arc-shaped limiting plate 6 is fixedly connected. On both sides of the bottom of the blanking box 4 corresponding to the blanking channel, adjustment boxes 7 are respectively fixedly connected. On both sides of the bottom port of each adjustment box 7, fixed rods 8 are fixedly connected. The bottom of the fixed rod 8 is fixedly connected to both side walls at the top of the detection cylinder 9. The detection cylinder 9 is suspended in the sorting box 1. And inside the detection cylinder 9, an installation wire cylinder 10 is fixedly connected. A detection coil 11 is wound around the outer wall of the installation wire cylinder 10. A detection alarm 12 is fixedly connected to the outer wall of the detection cylinder 9. The detection coil 11 is energized, and the detection coil 11 is electrically connected to the detection alarm 12. Between the inner walls of the sorting box 1 below the detection cylinder 9, a sorting inclined plate 13 is arranged. The end of the sorting inclined plate 13 extends through and to the outside of the sorting box 1. A turning plate 14 is movably arranged between the inner walls of the blanking channel. On the inner wall of the blanking box 4 below the arc-shaped limiting plate 6, a dimension scanner 15 is fixedly connected. The dimension scanner 15 is suspended directly above the turning plate 14.

[0036] The end of the arc-shaped limiting plate 6 is suspended above the end of the swing needle inclined platform 5. The knitting needles slide and blank through the gap between the bottom of the end of the arc-shaped limiting plate 6 and the top of the swing needle inclined platform 5. An installation cavity 51 is arranged inside the swing needle inclined platform 5. A T-shaped plate 52 is arranged through the swing needle inclined platform 5 corresponding to the end of the arc-shaped limiting plate 6. The bottom plate of the T-shaped plate 52 is suspended in the installation cavity 51. The outer walls of both sides of the bottom plate of the T-shaped plate 52 are movably sleeved on the outer wall of the guide rod 53. A buffer spring 54 is wound around the outer wall of the guide rod 53 below the bottom plate of the T-shaped plate 52. In the middle of the lower end of the bottom plate of the T-shaped plate 52, a traction rope 55 is fixedly connected. The traction rope 55 is wound around the outer wall of a wire winding wheel 56 arranged on the bottom plate of the installation cavity 51, and its end is fixedly connected to the electric piston telescopic rod 57.

[0037] The end of the electric piston telescopic rod 57 is fixedly connected to the bottom plate of the installation cavity 51. And when the buffer spring 54 maintains a normal diastolic state, the top of the T-shaped plate 52 extends above the swing needle inclined platform 5 and fits the bottom of the end of the arc-shaped limiting plate 6. At this time, the traction rope 55 is taut, and the electric piston telescopic rod 57 is in the maximum extended state. The electric piston telescopic rod 57 is controlled by the PLC controller 3 to start. It makes a reciprocating movement, and uses the traction rope 55 to pull the T-shaped plate 52 to move up and down reciprocally on the outer wall of the guide rod 53 based on the wire winding wheel 56. The vertical plate of the T-shaped plate 52 moves up and down reciprocally on the top of the end of the swing needle inclined platform 5. With the blocking of the arc-shaped limiting plate 6, the knitting needles neatly stacked on the top of the swing needle inclined platform 5 slide down intermittently in sequence, and thus fall into the blanking channel to complete automatic blanking.

[0038] The flipping plate 14 includes a buffer plate 141 movably arranged between the inner walls of the blanking channel and a guiding groove 142 arranged at the top of the buffer plate 141. The two ends of the buffer plate 141 are respectively arranged corresponding to the adjustment boxes 7 on both sides of the bottom of the blanking box 4. And on the inner wall of the blanking channel below the middle shaft of the buffer plate 141, a wire reel 143 is movably arranged through a rotating shaft. The rotating shaft is externally connected to a forward and reverse rotating motor. Adjusting ropes 144 are respectively wound on the outer wall of the wire reel 143. The ends of the adjusting ropes 144 are fixedly connected to the bottom of the end of the buffer plate 141. There are two groups of the same adjusting ropes 144 wound on the outer wall of the wire reel 143. The two groups of adjusting ropes 144 are respectively wound in opposite directions. And after the two groups of adjusting ropes 144 are wound the same number of turns, they are then connected to the buffer plate 141. The rotating motor drives the wire reel 143 to rotate. The wire reel 143 winds up one side of the adjusting rope 144 and releases the other side, thereby driving the buffer plate 141 to deflect. After the buffer plate 141 receives the slipping knitting needles, it deflects to project the knitting needles in the guiding groove 142 at its top into the designated adjustment box 7, thus completing the sorting and feeding after the thickness identification of the knitting needles.

[0039] The inside of the adjustment box 7 is arranged in a funnel-shaped structure. A guiding needle tube 71 is fixedly connected to the bottom of the funnel. The lower end of the guiding needle tube 71 extends to the outside of the bottom of the adjustment box 7. And the guiding needle tube 71 is correspondingly suspended above the middle hole of the installation bobbin 10.

[0040] An annular tube 72 is arranged near the top of the side wall of the funnel cavity of the adjustment box 7. One end of the outer wall of the annular tube 72 is communicated with an air inlet valve tube 73. Air cylinders 74 are evenly and spacedly fixedly connected to the inner outer wall of the annular tube 72. A piston rod 75 is sleeved at the end of the air cylinder 74. The end of the piston rod 75 extends into the funnel cavity of the adjustment box 7. The end of the piston rod 75 is fixedly connected to an adjustment top block 76. The adjustment top block 76 includes structures such as a hemispherical shape, a triangular prism shape, and a wedge shape, which are convenient for guiding the knitting needles to slide vertically. The knitting needles slide into the funnel cavity of the adjustment box 7 and slide along the inner wall of the funnel cavity. Then the air inlet valve tube 73 ventilates the annular tube 72, so that the piston rod 75 at the end of the air cylinder 74 inside the annular tube 72 pops out. The piston rod 75 uses the adjustment top block 76 at its end to push the upper part of the knitting needles in the funnel cavity, so that the knitting needles can stably enter the guiding needle tube 71 vertically and avoid the knitting needles getting stuck in the funnel cavity.

[0041] Specifically, after the knitting needles at the top of the swing needle inclined platform 5 intermittently slide past the bottom of the end of the arc-shaped limiting plate 6 in sequence, they intermittently fall onto the turning plate 14 in sequence. The knitting needles are placed flat on the top of the turning plate 14. Then, the size scanner 15 scans and identifies the sizes of the knitting needles. After judging the thickness sizes of the knitting needles, the turning plate 14 turns, so that the knitting needles on its top slide obliquely, and thus fall into the adjustment box 7 corresponding to the thickness of the knitting needles at the bottom of the blanking box 4 in sequence according to the thickness division. The knitting needles are vertically adjusted and slide in the adjustment box 7, and vertically fall into the corresponding detection cylinder 9 at the bottom of the adjustment box 7. The knitting needles enter the middle hole of the installation bobbin 10 in the detection cylinder 9. The detection coil 11 on the outer wall of the installation bobbin 10 generates magnetic field changes and eddy currents when the knitting needles fall. The detection alarm 12 detects according to the magnetic field and eddy current changes of the detection coil 11 when the knitting needles fall, so as to determine the surface cracks, cracks and other defects of the knitting needles, and thus complete the detection and identification of defective knitting needles while sorting knitting needles of different thicknesses, which is convenient and practical.

[0042] In order to facilitate the effective identification of the defective products detected by the knitting needles, such as Figure 6 and Figure 8 shown, the following preferred technical solutions are provided:

[0043] An annular cavity 91 is arranged inside the detection cylinder 9 below the installation bobbin 10. A fluorescent liquid 92 is contained at the bottom of the annular cavity 91. The lower end of the top plate of the annular cavity 91 is movably connected with a telescopic support 93. The end of the telescopic support 93 is movably connected with a marking roller 94. An electric telescopic rod 95 is movably connected to the side wall of the moving rod of the marking roller 94. The end of the electric telescopic rod 95 is movably connected to the inner wall of the annular cavity 91, and a communication hole 96 is formed in the side wall of the annular cavity 91 close to the middle hole.

[0044] The communication hole 96 is arranged on the side wall of the annular cavity 91 above the fluorescent liquid 92. The communication hole 96 corresponds to the marking roller 94. The marking roller 94 is suspended above the fluorescent liquid 92 at the communication hole 96. A movable plug plate 901 is arranged inside the detection cylinder 9 between the annular cavity 91 and the installation bobbin 10. The movable plug plate 901 is driven by a hydraulic rod at the end, or an electric plug valve is arranged to complete the blocking and communication of the channel between the middle holes of the installation bobbin 10 and the annular cavity 91. The moving plate of the movable plug plate 901 is suspended above the middle hole of the annular cavity 91.

[0045] Specifically, after the knitting needle enters the inner hole of the installation bobbin 10, it falls on the movable plug board 901. According to the quality detection structure of the knitting needle by the detection coil 11, when the quality of the knitting needle is qualified, the movable plug board 901 retracts, and the knitting needle directly slides down from the middle hole of the annular cavity 91 and then falls on the sorting inclined plate 13 for discharging; when the knitting needle is detected as a defective product, the electric telescopic rod 95 extends to drive the telescopic support 93 to extend and deflect, moves the marking roller 94 from the communication hole 96 to the middle hole of the annular cavity 91, and then controls the movable plug board 901 to retract. After the knitting needle falls into the middle hole of the annular cavity 91, the knitting needle slides over the side wall of the marking roller 94, and the fluorescent liquid 92 contaminated on the marking roller 94 is coated on the knitting needle, marking the defective knitting needle by using the luminescence characteristics of the fluorescent liquid 92, so as to effectively identify it during the sorting of knitting needles, which is convenient and fast.

[0046] In order to realize the effective sorting of defective knitting needles, as Figure 2 and Figures 12 - 13 shown, the following preferred technical solutions are provided:

[0047] A long partition board 131 is fixedly connected to the middle part of the top inclined surface of the sorting inclined plate 13. Short partition boards 132 are respectively fixedly connected to the top inclined surfaces of the sorting inclined plate 13 on both sides of the long partition board 131. The long partition board 131 and the short partition boards 132 divide the sorting inclined plate 13 into four equal parts. A limiting rod 133 is fixedly connected to the outer wall of one side of the upper end of the short partition board 132 in an inclined manner. An annular guiding plate 134 is movably sleeved on the outer wall of the limiting rod 133. The annular guiding plate 134 is inclined and suspended at the port of the defective product channel formed by the long partition board 131 and the short partition boards 132, and between the short partition board 132 and the inner wall of the sorting box 1. A guiding sliding groove 135 is formed in the outer wall of one side of the short partition board 132, and a moving block 136 is movably engaged in the guiding sliding groove 135. One end of the outer wall of the moving block 136 is movably connected to an activity connecting rod 137, and the other end of the activity connecting rod 137 is movably connected to the side wall of one end of the annular guiding plate 134. The outer wall of one side of the lower end of the moving block 136 inclined is fixedly connected to a hydraulic telescopic rod 138 on the side wall of the short partition board 132.

[0048] Specifically, knitting needles with different thicknesses fall from the bottom port of the detection cylinder 9 onto the sorting inclined plate 13 after being detected, and fall on both sides of the long partition plate 131. When the quality of the knitting needles is qualified, the fallen knitting needles slide along the inclined surface of the sorting inclined plate 13, contact the inclined annular guide plate 134, and slide into the qualified product channel formed by the long partition plate 131, the short partition plate 132 and the inner wall of the sorting box 1 under the guidance of the annular guide plate 134, and then slide out of the sorting box 1 for collection; when defective products appear, the hydraulic telescopic rod 138 is activated, and the hydraulic telescopic rod 138 extends to push the moving block 136 along the guide chute 135. The moving block 136 uses the movable connecting rod 137 to push the annular guide plate 134 to deflect and slide on the outer wall of the limiting rod 133, so that the annular guide plate 134 deflects and is suspended obliquely at the port of the qualified product channel. The defective products of knitting needles with different thicknesses falling on both sides of the long partition plate 131 are guided by the annular guide plate 134, slide into the defective product channel and slide out of the sorting box 1 for collection, realizing the effective sorting of defective products of knitting needles with different thicknesses, which is convenient and practical.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A defective product sorting and needle picking device for textile knitting needles, comprising a sorting box (1), a maintenance door (2) and a PLC controller (3) arranged on the outer wall of the sorting box (1). One end of the top of the sorting box (1) is provided with a feeding box (4), and it is characterized in that: On one side of the bottom plate of the blanking box (4), a swinging needle inclined platform (5) is fixedly connected. There is a blanking channel between the end of the swinging needle inclined platform (5) and the inner wall of the blanking box (4). And on the inner wall of the blanking box (4) above the end of the swinging needle inclined platform (5), an arc-shaped limiting plate (6) is fixedly connected. On both sides of the bottom of the blanking box (4) corresponding to the blanking channel, adjustment boxes (7) are respectively fixedly connected. On both sides of the bottom port of each adjustment box (7), fixing rods (8) are fixedly connected. The bottom of the fixing rods (8) is fixedly connected to the two side walls at the top of the detection cylinder (9). The detection cylinder (9) is suspended in the sorting box (1). And inside the detection cylinder (9), an installation wire cylinder (10) is fixedly connected. A detection coil (11) is wound around the outer wall of the installation wire cylinder (10). On the outer wall of the detection cylinder (9), a detection alarm (12) is fixedly connected. Between the inner walls of the sorting box (1) below the detection cylinder (9), a sorting inclined plate (13) is arranged. The end of the sorting inclined plate (13) extends through to the outside of the sorting box (1). A turning plate (14) is movably arranged between the inner walls of the blanking channel. On the inner wall of the blanking box (4) below the arc-shaped limiting plate (6), a dimension scanner (15) is fixedly connected. The dimension scanner (15) is suspended directly above the turning plate (14); The inside of the adjustment box (7) is arranged in a funnel-shaped structure. At the bottom of its funnel, a guiding needle tube (71) is fixedly connected. The lower end of the guiding needle tube (71) extends to the outside of the bottom of the adjustment box (7). And the guiding needle tube (71) is correspondingly suspended above the middle hole of the installation wire cylinder (10); Inside the detection cylinder (9) below the installation wire cylinder (10), an annular cavity (91) is arranged. The bottom of the annular cavity (91) is filled with fluorescent liquid (92). The lower end of the top plate of the annular cavity (91) is movably connected with a telescopic support (93). The end of the telescopic support (93) is movably connected with a marking roller (94). On the side wall of the moving rod of the marking roller (94), an electric telescopic rod (95) is movably connected. The end of the electric telescopic rod (95) is movably connected to the inner wall of the annular cavity (91). And on the side wall of the annular cavity (91) close to the middle hole, a communication hole (96) is opened; The communication hole (96) is arranged on the side wall of the annular cavity (91) above the fluorescent liquid (92). The communication hole (96) corresponds to the marking roller (94). The marking roller (94) is suspended above the fluorescent liquid (92) at the communication hole (96). And inside the detection cylinder (9) between the annular cavity (91) and the installation wire cylinder (10), a moving plug board (901) is arranged. The moving board of the moving plug board (901) is suspended above the middle hole of the annular cavity (91); The turning plate (14) includes a buffer plate (141) movably arranged between the inner walls of the blanking channel and a guiding groove (142) arranged on the top of the buffer plate (141). The two ends of the buffer plate (141) respectively correspond to the adjustment boxes (7) on both sides of the bottom of the blanking box (4).

2. The needle picking device for defective products in textile knitting needle production according to claim 1, wherein: The end of the arc-shaped limiting plate (6) is suspended above the end of the pendulum needle inclined table (5). An installation cavity (51) is arranged inside the pendulum needle inclined table (5). A T-shaped plate (52) is arranged through the pendulum needle inclined table (5) corresponding to the end of the arc-shaped limiting plate (6). The bottom plate of the T-shaped plate (52) is suspended in the installation cavity (51). The outer walls of both sides of the bottom plate of the T-shaped plate (52) are movably sleeved on the outer wall of the guide rod (53). A buffer spring (54) is wound around the outer wall of the guide rod (53) below the bottom plate of the T-shaped plate (52). A traction rope (55) is fixedly connected to the middle of the lower end of the bottom plate of the T-shaped plate (52). The traction rope (55) is wound around the outer wall of the wire winding wheel (56) arranged on the bottom plate of the installation cavity (51), and its end is fixedly connected to the electric piston expansion rod (57).

3. The needle picking device for defective product selection applied to textile knitting needle production according to claim 2, characterized in that: The end of the electric piston expansion rod (57) is fixedly connected to the bottom plate of the installation cavity (51). When the buffer spring (54) maintains a normal diastolic state, the top of the T-shaped plate (52) extends above the pendulum needle inclined table (5) and fits against the bottom of the end of the arc-shaped limiting plate (6). At this time, the traction rope (55) is taut, and the electric piston expansion rod (57) is in the maximum elongation state.

4. The needle picking device for defective product selection applied to textile knitting needle production according to claim 1, wherein: An annular pipe (72) is arranged near the top of the side wall of the funnel cavity of the adjustment box (7). One end of the outer wall of the annular pipe (72) is communicated with the air inlet valve pipe (73). Air cylinders (74) are evenly and spacedly fixedly connected to the inner outer wall of the annular pipe (72). A piston rod (75) is sleeved at the end of the air cylinder (74). The end of the piston rod (75) extends into the funnel cavity of the adjustment box (7), and its end is fixedly connected to an adjustment top block (76).

5. An out-of-needle device for selecting defective products applied to the production of textile knitting needles according to claim 1, characterized in that: A wire winding disc (143) is movably arranged on the inner wall of the blanking channel below the middle shaft rod of the buffer plate (141) through a rotating shaft. Adjusting ropes (144) are respectively wound around the outer wall of the wire winding disc (143). The ends of the adjusting ropes (144) are fixedly connected to the bottom of the end of the buffer plate (141).

6. The needle picking device for defective products in textile knitting needle production according to claim 5, characterized in that: Two groups of the adjusting ropes (144) wound around the outer wall of the wire winding disc (143) are wound in the same way. The two groups of adjusting ropes (144) are respectively wound in the reverse direction, and after the two groups of adjusting ropes (144) are wound the same number of turns, they are connected to the buffer plate (141).

7. An out-of-needle device for selecting defective products in the production of textile knitting needles according to claim 1, characterized in that: A long partition plate (131) is fixedly connected to the middle of the top slope of the sorting inclined plate (13). Short partition plates (132) are respectively fixedly connected to the top slopes of the sorting inclined plate (13) on both sides of the long partition plate (131). A limiting rod (133) is fixedly connected to the outer wall of one side of the upper end of the short partition plate (132). An annular guiding plate (134) is movably sleeved on the outer wall of the limiting rod (133). A guiding chute (135) is arranged on the outer wall of one side of the short partition plate (132). A moving block (136) is movably engaged in the guiding chute (135). An active connecting rod (137) is movably connected to the outer wall of the moving block (136). The other end of the active connecting rod (137) is movably connected to the side wall of the end of one end of the annular guiding plate (134). The outer wall of the lower end of the inclined side of the moving block (136) is fixedly connected to the hydraulic expansion rod (138) on the side wall of the short partition plate (132).

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