Automatic needle screening equipment

Abstract

The utility model discloses automatic needle screening equipment, and relates to the technical field of knitting needle production equipment. A bearing block assembly is slidably connected to the middle of the bottom plate and comprises a second connecting block, second sliding grooves are symmetrically formed in the second connecting block, a plurality of clamping block assemblies are fixedly connected to the sides, provided with the second sliding grooves, of the second connecting block, and the second sliding grooves in the same side communicate with inner cavities of the clamping block assemblies; the upper end of the second connecting block is connected with a needle screening box assembly in a sliding mode, and the needle screening box assembly comprises a connecting box. The bearing block assembly can be driven by the driving assembly to reciprocate, then the needle screening box assembly can be driven by the bearing block assembly to reciprocate, knitting needles placed at the needle screening box assembly can be screened, after screening is completed, position limitation on a sliding plate can be relieved by rotating the clamping block assembly, and therefore the knitting needles can be screened conveniently. And then a worker can separate the needle screening box assembly from the bearing block assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting needle production equipment, in particular to an automatic needle screening device. Background Art

[0002] Knitting needles, as an indispensable loop-forming part in knitting machines, are manufactured through a process that embodies precise mechanical technology and rigorous quality control. These tiny parts made of steel wire or steel belt not only carry the mission of weaving yarn into exquisite coils, but are also key factors in ensuring the quality and production efficiency of knitted fabrics. The structure and shape of the knitting needles have a direct impact on the knitting loop-forming process. Any slight deviation may have an immeasurable impact on the production efficiency and product quality of the knitting machine. Therefore, the design and production of knitting needles play a pivotal role in the knitting machine manufacturing industry.

[0003] However, in the production process of knitting needles, a common problem is the inconsistency of the directions of the heads and tails of the knitting needles. This inconsistency not only brings great troubles to the subsequent knitting needle processing processes, such as weaving and assembly, but also causes many inconveniences in the packaging stage. The traditional solution is to rely on manual adjustment of the direction of the knitting needles, but this method is inefficient, requires large labor input, and it is difficult to ensure the accuracy and consistency of the adjustment results.

[0004] Although there are needle screening machines with automatic needle screening functions on the market, these devices have improved the automation level of the production process to a certain extent, but after the screening is completed, its operation process is still not efficient enough. Specifically, after the screening is completed, the existing needle screening machines usually need to go through a shutdown process, waiting for the staff to manually intervene and remove the screened needles from the equipment. Then, after taking out these needles, the staff can put new needles to be screened into the equipment for the next round of screening operations. Such an operation process not only directly leads to a waste of production time, because shutdown, waiting and restarting all require extra time, thereby affecting the operation efficiency of the entire production line.

[0005] Chinese patent document CN214398721U discloses a needle screening machine for knitting needle arrangement, the needle screening machine comprises a chassis, a driving motor, a needle screening box, a transmission assembly and a transmission rod, the needle screening box is installed on the upper end of the chassis, bearings are installed on both sides of the needle screening box, a limiting slide rail is provided on the upper end of the chassis, the bearings are placed in the limiting slide rail, a needle screening plate is installed in the needle screening machine, a plurality of needle screening holes are provided on the needle screening plate, one end of the transmission rod is connected to the needle screening box, the other end of the transmission rod is connected to the transmission assembly, the driving motor drives the transmission assembly, and the driving motor drives the needle screening box to swing through the transmission assembly and the transmission rod; but there are still the following defects in the implementation process:

[0006] Although the device in the above-mentioned document can arrange the knitting needles with inconsistent heads and tails into the same direction, replace manual operation and improve work efficiency, the device in the above-mentioned document needs to be shut down after completing the screening of the knitting needles, waiting for the staff to manually intervene and remove the screened knitting needles from the equipment. Then, after taking out these knitting needles, the staff can put new knitting needles to be screened into the equipment for the next round of screening operations. Such an operation process not only directly leads to a waste of production time. Utility Model Content

[0007] The purpose of the utility model is to provide an automatic needle screening device to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A kind of automatic needle screening equipment comprises a support frame; a placing plate is fixedly connected to the middle part of the support frame, and the upper end of the placing plate is fixedly connected to a motor, one side of the support frame is rotatably connected to a rotating shaft, and the rotating shaft and the motor output rod are jointly fixedly connected to a pulley one, the upper end of the support frame is fixedly connected to a bottom plate, and the side of the bottom plate close to the rotating shaft is fixedly connected to a driving assembly, and the middle part of the bottom plate is slidably connected to a bearing block assembly, and the bearing block assembly comprises a connecting block two, and the connecting block two is symmetrically provided with a slide groove two, and the side of the connecting block two provided with the slide groove two is fixedly connected with a plurality of block assemblies, and the slide groove two on the same side is communicated with the inner cavity of the block assembly, and the lower end of the connecting block two is fixedly connected with a moving block, and the upper end of the connecting block two is slidably connected with a screening needle box assembly, and the screening needle box assembly comprises a connecting box, and the lower end of the connecting box is symmetrically fixedly connected with a slide plate, and the side of the slide plate close to the block assembly is provided with a plurality of limiting holes, and the slide plate on the same side is slidably connected to the inner cavity of the slide groove two.

[0010] A further improvement of the technical solution of the utility model is that a plurality of screen cylinder assemblies are plugged into the upper part of the connection box, the screen cylinder assembly includes an outer shell 2, a partition is fixedly connected to the middle of the inner cavity of the outer shell 2, the partition is provided with a plurality of screen holes, the inner cavity diameter of the screen holes is larger than the diameter of the knitting needle head, and the inner cavity diameter of the screen holes is smaller than the diameter of the knitting needle tail.

[0011] The above-mentioned technical scheme is adopted, in which the diameter of the sieve hole is set to be larger than the diameter of the knitting needle head and smaller than the diameter of the knitting needle tail, so that when the knitting needle is screened, when the tail of the knitting needle is facing downward, it cannot fall into the inner cavity of the sieve hole, and when the head of the knitting needle is facing downward, it will fall into the inner cavity of the sieve hole, and then the knitting needle in the inner cavity of the second shell will appear, and the horizontal height of the knitting needle with the tail facing downward is higher than the horizontal height of the knitting needle with the head facing downward, so that the knitting needle can be screened.

[0012] A further improvement of the technical solution of the utility model is that the driving component includes a rotating shaft and four mounting columns, the rotating shaft is symmetrically fixedly connected with connecting wheels, the two connecting wheels are rotatably connected with connecting block one, the two connecting blocks one are commonly fixedly connected to the bottom plate, the end faces of the rotating shaft are fixedly connected with swing wheels, the sides of the two swing wheels away from each other are fixedly connected with the mounting columns, the two mounting columns on the side away from the rotating shaft are commonly fixedly connected with connecting block two, and the two mounting columns on the same side are commonly rotatably connected with a transmission rod.

[0013] The above technical solution is adopted, in which the two swing wheels can be driven to rotate by the rotation of the rotating shaft, and then the mounting column is used to drive the mounting column to reciprocate, thereby driving the supporting block assembly to reciprocate, and then the screening needle box assembly is driven by the supporting block assembly to screen the knitting needles.

[0014] A further improvement of the technical solution of the utility model is that a second pulley is fixedly connected to the rotating shaft and the rotary shaft.

[0015] The above technical solution is adopted, in which pulley two is fixedly connected to the rotating shaft through the rotating shaft, so that pulley one can be driven by the motor to operate, and then pulley one is used to drive the rotating shaft to rotate, so that the rotating shaft can be driven to rotate by pulley two.

[0016] A further improvement of the technical solution of the utility model is that a slide groove 1 is provided in the middle of the bottom plate.

[0017] The above technical solution is adopted, in which a slide groove 1 is provided, so that the moving position of the bearing block assembly can be limited by the slide groove 1.

[0018] A further improvement of the technical solution of the utility model is that the clamping block assembly includes a shell 1, which is fixedly connected to a connecting block 2, a convex block is slidably connected to an inner cavity of the shell 1, a threaded block is threadedly connected to the inner cavity of the shell 1, and the shell 1 is rotatably connected to the threaded block.

[0019] The above technical solution is adopted, in which the threaded block is threadedly connected to the outer shell, and the threaded block is rotatably connected to the protrusion, so that the protrusion can be driven to move in the inner cavity of the outer shell by rotating the threaded block, and then the protrusion can be pushed to move toward the limiting hole, and then the position of the slide plate is limited by the protrusion.

[0020] A further improvement of the technical solution of the utility model is that the moving block is symmetrically fixedly connected with a sliding block, the sliding block is T-shaped, and the inner cavity of the sliding groove on the same side is slidably connected with the sliding block.

[0021] The above-mentioned technical scheme is adopted, in which a slider is symmetrically fixedly connected to a moving block, and then the slider is slidably connected to a slide groove, so that the moving trajectory of the slider can be limited by the slide groove to prevent the slider from leaving the track during the movement, thereby affecting the screening of the knitting needles by the device.

[0022] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0023] 1. The utility model provides an automatic needle screening device, which can drive the bearing block assembly to perform reciprocating motion through a driving assembly, and then can use the bearing block assembly to drive the screening needle box assembly to perform reciprocating motion, so that the knitting needles placed at the screening needle box assembly can be screened. After the screening is completed, the position limitation of the slide plate can be released by rotating the clamping block assembly. Then the staff can separate the screening needle box assembly from the bearing block assembly, and then place the screening needle box assembly with new knitting needles to be screened on the upper end of the bearing block assembly, and let the slide plate slide in the inner cavity of the second slide groove, so as to limit the position of the screening needle box assembly by utilizing the cooperation of the clamping block assembly and the limiting hole, so that the device can continue to screen the knitting needles, and then the staff can remove the knitting needles that have just completed the screening when the device continues to run, and then place new knitting needles to be screened into the inner cavity of the screen cylinder assembly, thereby saving production time and improving the efficiency of the entire production line.

[0024] 2. The utility model provides an automatic needle screening device, which is connected by a connecting box and a plurality of screen cylinder assemblies, so that the screen cylinder assembly can be replaced according to knitting needles of different sizes or shapes, and then the device can screen needles of different sizes or shapes, thereby improving the practicability and universality of the device, and the threaded block is threadedly connected to the outer shell, and the threaded block is rotatably connected to the protrusion, so that the protrusion can be driven to move in an inner cavity of the outer shell by rotating the threaded block, and then the protrusion can be pushed to move toward the direction of the limiting hole, and then the position of the slide plate can be limited by the protrusion, thereby shortening the time required for limiting the position of the screen needle box assembly, and the force applied by the protrusion to the limiting hole can be adjusted according to different requirements, thereby further improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of a bearing block assembly of the utility model;

[0028] Figure 3 This is a schematic diagram of a screen needle box assembly of the utility model;

[0029] Figure 4 It is a schematic diagram of the drive assembly of the utility model;

[0030] Figure 5 It is a schematic diagram of the bottom plate of the utility model;

[0031] Figure 6 This is a schematic diagram of a card block assembly of the utility model;

[0032] Figure 7 It is a schematic diagram of a moving block of the utility model;

[0033] Figure 8 It is a schematic diagram of the screen drum assembly of the utility model;

[0034] In the figure: 1. support frame; 2. placement plate; 3. motor; 4. pulley 1; 5. pulley 2; 6. drive assembly; 61. rotating shaft; 62. connecting wheel; 63. connecting block 1; 64. swing wheel; 65. mounting column; 651. transmission rod; 7. bottom plate; 71. slide slot 1; 8. bearing block assembly; 81. connecting block 2; 82. slide slot 2; 83. clamping block assembly; 831. shell 1; 832. protrusion; 833. threaded block; 84. moving block; 841. slider; 9. sieve needle box assembly; 91. connecting box; 92. slide plate; 921. limiting hole; 93. sieve cylinder assembly; 931. shell 2; 932. partition; 933. sieve hole. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the embodiments: Example 1

[0036] like Figure 1-8 As shown, the utility model provides an automatic needle screening device, including a support frame 1; a placement plate 2 is fixedly connected to the middle of the support frame 1, a motor 3 is fixedly connected to the upper end of the placement plate 2, a rotating shaft is rotatably connected to one side of the support frame 1, the rotating shaft and the output rod of the motor 3 are jointly fixedly connected to a pulley 4, a bottom plate 7 is fixedly connected to the upper end of the support frame 1, a driving assembly 6 is fixedly connected to the side of the bottom plate 7 close to the rotating shaft, a bearing block assembly 8 is slidably connected to the middle of the bottom plate 7, and the bearing block assembly 8 includes a connecting block 2 81, and the connecting block 2 81 is symmetrically provided with Slide groove 2 82 and connecting block 2 81 are both fixedly connected with a plurality of block assemblies 83 on one side of which the slide groove 2 82 is opened. The slide groove 2 82 on the same side is communicated with the inner cavity of the block assembly 83. The lower end of the connecting block 2 81 is fixedly connected with a moving block 84. The upper end of the connecting block 2 81 is slidably connected with a screen needle box assembly 9. The screen needle box assembly 9 includes a connecting box 91. The lower end of the connecting box 91 is symmetrically fixedly connected with a slide plate 92. A plurality of limiting holes 921 are opened on the side of the slide plate 92 close to the block assembly 83. The slide plate 92 on the same side is slidably connected with the inner cavity of the slide groove 2 82.

[0037] In this embodiment, the entire device can be supported by the support frame 1, the motor 3 can be supported and connected by the placement plate 2, the rotating shaft can be driven to rotate by the cooperation of the pulley 1 4 and the motor 3, the driving assembly 6 can drive the bearing block assembly 8 to reciprocate, and then drive the screening needle box assembly 9 to screen the knitting needles, the screening needle box assembly 9 can be supported by the connecting block 2 81, the slide plate 92 can be limited by the cooperation of the slide groove 2 82 and the block assembly 83, the moving block 84 can be slidably connected to the bottom plate 7, and the moving trajectory of the bearing block assembly 8 can be limited by the bottom plate 7. Example 2

[0038] like Figure 2 , Figure 4 , Figure 5 , Figure 7 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the driving component 6 includes a rotating shaft 61 and four mounting columns 65, the rotating shaft 61 is symmetrically fixedly connected with a connecting wheel 62, the two connecting wheels 62 are rotatably connected with a connecting block 1 63, the two connecting blocks 1 63 are commonly fixedly connected to the bottom plate 7, the end faces of the rotating shaft 61 are fixedly connected with a swing wheel 64, the two swing wheels 64 are fixedly connected to the mounting column 65 on the sides away from each other, the two mounting columns 65 on the side away from the rotating shaft 61 are commonly fixedly connected to the connecting block 2 81, the two mounting columns 65 on the same side are rotatably connected with a transmission rod 651, the rotating shaft 61 and the rotating shaft are commonly fixedly connected with a pulley 2 5, a slide groove 1 71 is opened in the middle of the bottom plate 7, the moving block 84 is symmetrically fixedly connected with a slider 841, the slider 841 is T-shaped, and the inner cavity of the slide groove 1 71 on the same side is slidably connected to the slider 841.

[0039] In this embodiment, when it is necessary to screen the knitting needles, first, the staff controls the operation of the motor 3 through the controller, and utilizes the cooperation between the output rod of the motor 3 and the pulley 1 4 to drive the rotating shaft to rotate, and then utilizes the cooperation between the rotating shaft and the pulley 2 5 to drive the rotating shaft 61 to rotate. Under the action of the rotating shaft 61, the connecting wheel 62 will be driven to rotate in the inner cavity of the connecting block 1 63, and then the connecting wheel 62 is supported and limited by the connecting block 1 63. The rotation of the rotating shaft 61 can drive the swing wheel 64 to rotate, and then the mounting column 65 can be driven to reciprocate, so that under the cooperation of the transmission rod 651 and the mounting column 65 on the other side, the connecting block 2 81 will be driven to reciprocate, so that the moving block 84 can be driven to move in the inner cavity of the bottom plate 7, and then the slider 841 is driven to slide back and forth in the inner cavity of the slide groove 1 71, and the moving trajectory of the slider 841 is limited by the slide groove 1 71. Example 3

[0040] like Figure 3 , Figure 8 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a plurality of screen cylinder assemblies 93 are plugged into the upper part of the connection box 91, and the screen cylinder assembly 93 includes an outer shell 931, and a partition 932 is fixedly connected to the middle of the inner cavity of the outer shell 931, and the partition 932 is provided with a plurality of screen holes 933, and the inner cavity diameter of the screen hole 933 is larger than the diameter of the knitting needle head, and the inner cavity diameter of the screen hole 933 is smaller than the diameter of the knitting needle tail.

[0041] In this embodiment, when the connecting block 81 moves, due to the sliding connection between the slide plate 92 and the slide groove 82, the block assembly 83 and the limiting hole 921 cooperate to limit the position of the connecting box 91, so that when the connecting block 81 moves back and forth, the screen cylinder assembly 93 will be driven to move back and forth, thereby driving the knitting needles placed in the inner cavity of the shell 931 to swing back and forth, and then the diameter of the screen hole 933 is set to be larger than the diameter of the knitting needle head and smaller than the diameter of the knitting needle tail, so that when the knitting needles are screened, the knitting needles with the tail facing down cannot fall into the inner cavity of the screen hole 933, and the knitting needles with the head facing down will fall into the inner cavity of the screen hole 933, and then the horizontal height of the knitting needles with the tail facing down is higher than the horizontal height of the knitting needles with the head facing down, so that the knitting needles can be screened. Example 4

[0042] like Figure 6 As shown, based on Example 1, the utility model provides a technical solution: preferably, the block assembly 83 includes a shell 831, the shell 831 is fixedly connected to the connecting block 81, the inner cavity of the shell 831 is slidably connected with a protrusion 832, the inner cavity of the shell 831 is threadedly connected with a threaded block 833, and the shell 831 is rotatably connected to the threaded block 833.

[0043] In this embodiment, when the screening of the knitting needles is completed and the screened knitting needles need to be removed, the control device stops moving, and then the staff applies a force to the connecting box 91 to drive the screening needle box assembly 9 to separate from the supporting block assembly 8, thereby driving the slide plate 92 to slide in the inner cavity of the slide groove 82, and then the slide plate 92 applies a force to the protrusion 832, thereby pushing the protrusion 832 to move in the direction of the threaded block 833, and then the protrusion 832 no longer contacts the inner cavity of the limiting hole 921, thereby releasing the position limit of the protrusion 832 on the slide plate 92, and then the supporting block assembly 8 can be separated from the screening needle box assembly 9, and then the screening needle box assembly 9 containing the new knitting needles to be screened is placed on the upper end of the connecting block 81, and the slide plate 92 is connected to the slide groove. The two 82 are slidingly connected, and then the spring force on the protrusion 832 will push the protrusion 832 to move in the direction of the limiting hole 921, and then push the protrusion 832 to contact the inner cavity of the limiting hole 921, so that under the cooperation of the protrusion 832 and the limiting hole 921, the position of the slide plate 92 can be limited, and then the supporting block assembly 8 and the screening needle box assembly 9 can be temporarily connected as a whole, and then the controller controls the motor 3 to run, and then drives the device to repeat the above steps to screen the new knitting needles. While screening the new knitting needles, the staff can remove the screened knitting needles from the inner cavity of the screen cylinder assembly 93, and then put new knitting needles to be screened into the inner cavity of the screen cylinder assembly 93, thereby saving time and improving production efficiency.

[0044] The following is a detailed description of the working principle of the automatic needle screening equipment.

[0045] like Figure 1-8 As shown, when the knitting needles need to be screened, first, the staff controls the motor 3 to run through the controller, and uses the cooperation between the output rod of the motor 3 and the pulley 1 4 to drive the rotating shaft to rotate, and then uses the cooperation between the rotating shaft and the pulley 2 5 to drive the rotating shaft 61 to rotate. Under the action of the rotating shaft 61, the connecting wheel 62 will be driven to rotate in the inner cavity of the connecting block 1 63, and then the connecting block 1 63 is used to support and limit the connecting wheel 62. The rotation of the rotating shaft 61 can drive the swing wheel 64 to rotate, and then the mounting column 65 can be driven to reciprocate, so that under the cooperation of the transmission rod 651 and the mounting column 65 on the other side, the connecting block 2 81 will be driven to reciprocate, so that the moving block 84 can be driven to move in the inner cavity of the bottom plate 7, and then the slider 841 is driven to slide back and forth in the inner cavity of the slide groove 1 71, and the moving trajectory of the slider 841 is limited by the slide groove 1 71;

[0046] When the second connecting block 81 moves, due to the sliding connection between the slide plate 92 and the second slide groove 82, the block assembly 83 and the limiting hole 921 cooperate to limit the position of the connecting box 91, so that when the second connecting block 81 moves back and forth, the screen cylinder assembly 93 will be driven to move back and forth, thereby driving the knitting needles placed in the inner cavity of the second shell 931 to swing back and forth, and then the diameter of the screen hole 933 is set to be larger than the diameter of the knitting needle head and smaller than the diameter of the knitting needle tail, so that when the knitting needles are screened, the knitting needles with the tail facing down cannot fall into the inner cavity of the screen hole 933, and the knitting needles with the head facing down will fall into the inner cavity of the screen hole 933, and then the horizontal height of the knitting needles with the tail facing down is higher than the horizontal height of the knitting needles with the head facing down, so that the knitting needles can be screened;

[0047] When the screening of the knitting needles is completed and the screened knitting needles need to be removed, the control device stops moving, and then the staff applies a force to the connecting box 91 to drive the screening needle box assembly 9 to separate from the supporting block assembly 8, thereby driving the slide plate 92 to slide in the inner cavity of the second slide groove 82, and then the slide plate 92 applies a force to the protrusion 832, thereby pushing the protrusion 832 to move in the direction of the threaded block 833, and then the protrusion 832 no longer contacts the inner cavity of the limiting hole 921, thereby releasing the position limit of the protrusion 832 on the slide plate 92, and then the supporting block assembly 8 can be separated from the screening needle box assembly 9, and then the screening needle box assembly 9 containing the new knitting needles to be screened is placed on the upper end of the connecting block 81, and the slide plate 92 is slid into the second slide groove 82. Dynamic connection, and then under the action of the spring on the protrusion 832, the protrusion 832 will be pushed to move in the direction of the limiting hole 921, and then the protrusion 832 will be pushed to contact the inner cavity of the limiting hole 921, so that under the cooperation of the protrusion 832 and the limiting hole 921, the position of the slide plate 92 can be limited, and then the supporting block assembly 8 and the screening needle box assembly 9 can be temporarily connected as a whole, and then the controller controls the motor 3 to run, and then drives the device to repeat the above steps to screen the new knitting needles. While screening the new knitting needles, the staff can remove the knitting needles that have completed the screening from the inner cavity of the screen cylinder assembly 93, and then put new knitting needles to be screened into the inner cavity of the screen cylinder assembly 93, thereby saving time and improving production efficiency.

[0048] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An automatic needle screening device, comprising a support frame (1); characterized in that: The support frame (1) is fixedly connected to a placement plate (2) in the middle, and a motor (3) is fixedly connected to the upper end of the placement plate (2). A rotating shaft is rotatably connected to one side of the support frame (1), and the rotating shaft and the output rod of the motor (3) are fixedly connected to a pulley (4). The support frame (1) is fixedly connected to a bottom plate (7) at the upper end, and a driving assembly (6) is fixedly connected to the side of the bottom plate (7) close to the rotating shaft. A bearing block assembly (8) is slidably connected to the middle of the bottom plate (7), and the bearing block assembly (8) comprises a second connecting block (81), and the second connecting block (81) is symmetrically provided with a second slide groove (82). The second connecting block (81) is provided with a plurality of sliding grooves (82). 81) has a plurality of block assemblies (83) fixedly connected to one side of a second slide groove (82), the second slide groove (82) on the same side is in communication with the inner cavity of the block assembly (83), the lower end of the second connection block (81) is fixedly connected with a moving block (84), the upper end of the second connection block (81) is slidably connected with a screen needle box assembly (9), the screen needle box assembly (9) comprises a connection box (91), the lower end of the connection box (91) is symmetrically fixedly connected with a slide plate (92), a plurality of limiting holes (921) are provided on a side of the slide plate (92) close to the block assembly (83), and the slide plate (92) on the same side is slidably connected with the inner cavity of the second slide groove (82).

2. The automatic needle screening device according to claim 1, characterized in that: A plurality of sieve cylinder assemblies (93) are plugged into the upper part of the connection box (91), and the sieve cylinder assemblies (93) comprise a second outer shell (931), a partition plate (932) is fixedly connected to the middle of the inner cavity of the second outer shell (931), and the partition plate (932) is provided with a plurality of sieve holes (933), the inner cavity diameter of the sieve holes (933) being larger than the diameter of the knitting needle head, and the inner cavity diameter of the sieve holes (933) being smaller than the diameter of the knitting needle tail.

3. The automatic needle screening device according to claim 1, characterized in that: The driving assembly (6) comprises a rotating shaft (61) and four mounting columns (65); the rotating shaft (61) is symmetrically fixedly connected to connecting wheels (62); the two connecting wheels (62) are both rotatably connected to connecting blocks (63); the two connecting blocks (63) are jointly fixedly connected to the bottom plate (7); the end surfaces of the rotating shaft (61) are both fixedly connected to swing wheels (64); the two swing wheels (64) are both fixedly connected to the mounting columns (65) on the sides away from each other; the two mounting columns (65) on the side away from the rotating shaft (61) are jointly fixedly connected to connecting blocks (81); and the two mounting columns (65) on the same side are jointly rotatably connected to a transmission rod (651).

4. The automatic needle screening device according to claim 3, characterized in that: The rotating shaft (61) and the rotary shaft are fixedly connected to a second pulley (5).

5. The automatic needle screening device according to claim 1, characterized in that: A sliding groove (71) is provided in the middle of the bottom plate (7).

6. The automatic needle screening device according to claim 1, characterized in that: The clamping block assembly (83) comprises a first shell (831), the first shell (831) being fixedly connected to the second connecting block (81), the inner cavity of the first shell (831) being slidably connected to a protrusion (832), the inner cavity of the first shell (831) being threadedly connected to a threaded block (833), and the first shell (831) being rotatably connected to the threaded block (833).

7. The automatic needle screening device according to claim 5, characterized in that: The moving block (84) is symmetrically fixedly connected with a sliding block (841), the sliding block (841) is T-shaped, and the inner cavity of the sliding groove 1 (71) on the same side is slidably connected to the sliding block (841).

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