Cotton picking mechanism and cotton sliver sampling machine

Abstract

The utility model provides a cotton picking mechanism and a cotton sliver sampling machine. The cotton picking mechanism comprises a sliding seat and a needle picking assembly, the sliding base is slidably connected to the rack in the drafting direction of the drafting mechanism and used for bearing the collecting clearer roller and driving the collecting clearer roller to be close to or away from the drafting mechanism. The needle picking assembly is slidably connected to the rack in the axial direction of the clearer collecting roller and provided with cotton picking needles extending in the axial direction of the clearer collecting roller, and the cotton picking needles are suitable for being inserted into needle grooves in the circumferential wall of the clearer collecting roller; when the sliding seat drives the clearer collecting roller to be far away from the drafting mechanism and the clearer collecting roller rotates until the needle groove is axially aligned with the cotton picking needle, the cotton picking needle penetrates into the needle groove, so that the cotton picking needle picks off cotton slivers wound on the clearer collecting roller when the sliding seat is close to the drafting mechanism. According to the cotton picking mechanism and the cotton sliver sampling machine, the cotton picking needle can be inserted into the needle groove in the clearer collecting roller to be matched with the movement of the sliding seat to pick off cotton slivers, and compared with a manual cotton picking mode, the cotton picking mechanism and the cotton sliver sampling machine can remarkably improve the sampling efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cotton processing technical field, concretely relates to a cotton picking mechanism and cotton sliver sample preparation machine. BACKGROUND

[0002] Short fiber rate is one of important indexes for measuring cotton fiber quality, refers to the weight (or number) of short fiber in cotton fiber which is shorter than certain limit accounts for the total weight (or total number) of fiber, and short fiber rate directly influences spinning quality and spinning cost. Before detection of short fiber rate, first, cotton sample is drafted and sampled by sample preparation machine, and the working process of the sample preparation machine is that cotton sample is fed into drafting mechanism, drafted into sliver by drafting roller, wound on collection roller, then the sliver is peeled from the collection roller and fed into the drafting mechanism again, and usually needs to be drafted repeatedly for at least six times to obtain the sliver sample.

[0003] At present, the sample preparation machine has the defects that the sliver (cotton fiber bundle) wound on the collection roller needs to be cut or broken by manual operation, and then the sliver is peeled from the collection roller along the circumferential direction of the collection roller, which is time-consuming and laborious and affects the sampling efficiency. UTILIZY MODEL CONTENT

[0004] The utility model embodiment provides a cotton picking mechanism and cotton sliver sample preparation machine, aims at improving sampling efficiency.

[0005] To achieve the above object, the utility model adopts the technical scheme of: first, a cotton picking mechanism is provided, which comprises a sliding seat and a picking needle assembly; the sliding seat is slidingly connected to a rack along the drafting direction of a drafting mechanism, and the sliding seat is used for bearing a collection roller and driving the collection roller to approach or move away from the drafting mechanism; the picking needle assembly is slidingly connected to the rack along the axial direction of the collection roller, and has a cotton picking needle extending along the axial direction of the collection roller, and the cotton picking needle is adapted to be inserted into a needle slot on the peripheral wall of the collection roller; wherein, when the sliding seat drives the collection roller to move away from the drafting mechanism and the collection roller rotates to the axial alignment of the needle slot and the cotton picking needle, the cotton picking needle penetrates into the needle slot, so that the cotton picking needle breaks the sliver wound on the collection roller when the sliding seat approaches the drafting mechanism.

[0006] In combination with the first aspect, in a possible implementation manner, a rotary driving member and a detection sensor are arranged on the sliding seat, and an end surface of the collection roller is provided with a sensing hole deviating from the rotation axis thereof; the output end of the rotary driving member is in transmission connection with the collection roller, and the sensing end of the detection sensor is located on the rotation movement track of the sensing hole around the rotation axis; wherein, when the collection roller rotates to the axial alignment of the sensing hole and the sensing end of the detection sensor, the cotton picking needle is axially aligned with the needle slot.

[0007] In some embodiments, the picking needle assembly comprises:

[0008] A mounting seat is fixedly connected to the rack;

[0009] A sliding block is connected to the mounting base along the axial direction of the collecting roller, and the picking needle is connected to the sliding block.

[0010] A linear driving member is arranged on the mounting base and has an output end connected to the sliding block.

[0011] In an example, the linear driving member includes:

[0012] A first motor is fixedly connected to the frame and has an output end provided with a gear;

[0013] A rack is fixedly connected to the sliding block along the axial direction of the picking needle and is in meshing connection with the gear.

[0014] In an example, the mounting base is provided with a linear guide rail, and the sliding block is in sliding connection with the linear guide rail.

[0015] In some embodiments, the mounting base is provided with a needle guide hole, which is axially aligned with the picking needle and is adapted to allow the picking needle to pass through.

[0016] In combination with the first aspect, in a possible implementation, the frame is provided with a telescopic driving member and a slide rail; the sliding base is in sliding connection with the slide rail and is connected to the output end of the telescopic driving member.

[0017] In an example, the telescopic driving member includes:

[0018] A second motor is fixedly connected to the frame and is located at one end of the slide rail;

[0019] A lead screw is rotatably connected to the slide rail and is connected to the output end of the second motor;

[0020] A guide base is sleeved on the lead screw and is in threaded connection with the lead screw, the guide base is in sliding connection with the slide rail and is fixedly connected to the sliding base.

[0021] In an example, the sliding base is rotatably connected with two collecting rollers and two groups of picking needle assemblies, and the picking needles of the two groups of picking needle assemblies are respectively used to pass into the needle grooves of the two collecting rollers.

[0022] The advantages of the cotton picking mechanism provided by this utility model are as follows: Compared with the prior art, the cotton picking mechanism of this utility model first slides the slide block to drive the collecting roller closer to the stretching mechanism during sample preparation, so that the cotton sample can be wound on the collecting roller after passing through the stretching mechanism. After the winding is completed, slide the slide block to drive the collecting roller away from the stretching mechanism. Then, rotate the collecting roller to the angle where the needle groove is aligned with the picking needle. Slide the picking needle assembly to let the picking needle insert into the needle groove. Then, the slide block drives the collecting roller to move closer to the stretching mechanism again, so that the picking needle picks off the cotton strip wound on the collecting roller. Then, the picking needle assembly moves in the opposite direction to reset, so that the picking needle retracts and the collecting roller can be rotated to peel off the cotton strip. Compared with the manual cotton picking method, it not only saves time and labor and reduces personnel occupation, but also significantly improves the peeling speed, thereby improving the sample preparation efficiency.

[0023] Secondly, this utility model embodiment also provides a cotton sliver sample making machine, including the above-mentioned cotton picking mechanism.

[0024] The beneficial effects of the cotton sliver sample preparation machine provided by this utility model are as follows: Compared with the prior art, the cotton sliver sample preparation machine of this utility model adopts the above-mentioned cotton picking mechanism. During sample preparation, the sliding slide first drives the collecting roller to approach the stretching mechanism, so that the cotton sample can be wound on the collecting roller after passing through the stretching mechanism. After the winding is completed, the sliding slide drives the collecting roller away from the stretching mechanism. Then, the collecting roller is rotated to the angle where the needle groove is aligned with the picking needle. The picking needle assembly is then slid to allow the picking needle to insert into the needle groove. Then, the sliding slide drives the collecting roller to move closer to the stretching mechanism, so that the picking needle picks off the cotton sliver wound on the collecting roller. Then, the picking needle assembly moves in the opposite direction to reset, so that the picking needle retracts and the collecting roller can be rotated to peel off the cotton sliver. Compared with the manual cotton picking method, it not only saves time and labor and reduces personnel occupation, but also significantly improves the peeling speed, thereby improving the sample preparation efficiency. Attached Figure Description

[0025] Figure 1 A three-dimensional structural schematic diagram of the swab sample making machine provided in an embodiment of this utility model;

[0026] Figure 2 A three-dimensional structural diagram of the cotton-picking mechanism provided in an embodiment of this utility model;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0028] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0029] In the figure: 10, slide; 11, rotary drive; 12, detection sensor; 20, drafting mechanism; 30, frame; 31, telescopic drive; 311, second motor; 312, screw; 313, guide seat; 32, slide rail; 40, collecting roller; 401, needle slot; 402, induction hole; 50, picking needle assembly; 500, picking needle; 51, mounting seat; 511, linear guide rail; 512, needle guide hole; 52, sliding block; 53, linear drive; 531, first motor; 532, gear; 533, rack. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0031] It should be noted that when an element is referred to as "provided on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or several features. In the description of the present application, the meaning of "a plurality of", "several" is two or more, unless otherwise specifically limited.

[0032] Please refer to Figures 1 to 4The cotton picking mechanism provided by this utility model will now be described. The cotton picking mechanism includes a slide block 10 and a picking needle assembly 50. The slide block 10 is slidably connected to the frame 30 along the drafting direction of the drafting mechanism 20. The slide block 10 is used to support the collecting roller 40 and drive the collecting roller 40 to move closer to or away from the drafting mechanism 20. The picking needle assembly 50 is slidably connected to the frame 30 along the axial direction of the collecting roller 40 and has a picking needle 500 extending along the axial direction of the collecting roller 40. The picking needle 500 is adapted to be inserted into the needle groove 401 on the peripheral wall of the collecting roller 40. When the slide block 10 drives the collecting roller 40 away from the drafting mechanism 20 and the collecting roller 40 rotates until the needle groove 401 is axially aligned with the picking needle 500, the picking needle 500 penetrates the needle groove 401 so that the picking needle 500 breaks the cotton sliver wound on the collecting roller 40 when the slide block 10 approaches the drafting mechanism 20.

[0033] It should be explained that in this embodiment, one or more needle grooves 401 are opened on the peripheral wall of the collecting roller 40 for the picking needle 500. The picking needle 500 can enter the space between the cotton sliver wrapped around the peripheral wall of the collecting roller 40 and the peripheral wall of the collecting roller 40 by inserting the picking needle 500. When the slide block 10 drives the collecting roller 40 to approach the stretching mechanism 20, the distance between the collecting roller 40 and the picking needle 500 increases, thereby breaking the cotton sliver.

[0034] It should be noted that in this embodiment, the actions of the slide block 10 and the picking needle assembly 50 are both controlled by the control system of the sample making machine. Specifically, after the cotton sliver is completely wound around the collecting roller 40, the control system controls the slide block 10 to drive the collecting roller 40 away from the stretching mechanism 20, and controls the collecting roller 40 to rotate to the angle where the needle groove 401 is axially aligned with the picking needle 500. Then, the control system controls the picking needle assembly 50 to move so that the picking needle 500 enters the needle groove 401. Then, the control system controls the slide block 10 to move in the opposite direction so that the collecting roller 40 is away from the picking needle 500. Thus, the picking needle 500 is used to pick the cotton sliver at the position of the needle groove 401, and the cotton sliver can be peeled off from the collecting roller 40 without manual cutting or picking.

[0035] Compared with the prior art, the cotton picking mechanism provided by the embodiment can make the cotton sample pass through the drafting mechanism 20 and then be wound on the collection roller 40, and then the slide 10 drives the collection roller 40 to move away from the drafting mechanism 20, and then the collection roller 40 is rotated to an angle at which the needle slot 401 is aligned with the cotton picking needle 500, and then the cotton picking needle 500 is inserted into the needle slot 401 by sliding the needle assembly 50, and then the slide 10 drives the collection roller 40 to move towards the drafting mechanism 20 again, so that the cotton picking needle 500 cuts the sliver wound on the collection roller 40, and then the needle assembly 50 is reset in the reverse direction to make the cotton picking needle 500 retract, and then the collection roller 40 is rotated to strip the sliver. Compared with the manual cotton picking method, the cotton picking mechanism provided by the embodiment can save time and labor, reduce the number of personnel, and significantly improve the stripping speed and the sample preparation efficiency.

[0036] In some embodiments, referring to Figure 2 and Figure 3 , the slide 10 is provided with a rotary drive 11 and a detection sensor 12, and the end surface of the collection roller 40 is provided with a sensing hole 402 offset from the rotation axis of the collection roller 40; the output end of the rotary drive 11 is in transmission connection with the collection roller 40, and the sensing end of the detection sensor 12 is located on the rotation track of the sensing hole 402 around the rotation axis; when the collection roller 40 is rotated to the state that the sensing hole 402 is axially aligned with the sensing end of the detection sensor 12, the cotton picking needle 500 is axially aligned with the needle slot 401.

[0037] The detection sensor 12 can be a reflective distance sensor, and the rotary drive 11 can be a servo motor or a stepper motor. When the detection sensor 12 is aligned with the collection roller 40 at a position other than the sensing hole 402, the detection sensor 12 can receive the signal reflected by the end surface of the collection roller 40. When the collection roller 40 is rotated to the state that the sensing hole 402 is aligned with the sensing end of the detection sensor 12, the detection sensor 12 cannot obtain the reflected signal. Therefore, the rotary drive 11 can be controlled to stop rotating by the control system, so that the collection roller 40 is stationary in the state that the needle slot 401 is aligned with the cotton picking needle 500. At this time, the cotton picking needle 500 can be accurately inserted into the needle slot 401 by the action of the needle assembly 50, thereby realizing automatic cotton picking and saving labor.

[0038] As a specific embodiment of the above-mentioned needle assembly 50, referring to Figure 2 and Figure 3 , the needle assembly 50 includes a mounting seat 51, a sliding block 52, and a linear drive 53; the mounting seat 51 is fixedly connected to the rack 30; the sliding block 52 is slidably connected to the mounting seat 51 along the axial direction of the collection roller 40, and the cotton picking needle 500 is connected to the sliding block 52; and the linear drive 53 is arranged on the mounting seat 51 and has an output end connected to the sliding block 52.

[0039] The linear driving member 53 can be a linear motor or a combination of a rotary motor and a transmission member. The linear driving member 53 drives the slider 52 to move along the axial direction of the collecting roller 40, so that the picking needle 500 fixed to the slider 52 penetrates into or withdraws from the needle groove 401, without manual operation, which is labor-saving and efficient.

[0040] Specifically, as shown in Figure 3 The linear driving member 53 includes a first motor 531 and a rack 533. The first motor 531 is fixedly connected to the rack 30, and the output end is provided with a gear 532. The rack 533 is fixedly connected to the slider 52 along the axial direction of the picking needle 500, and is in meshing connection with the gear 532. The first motor 531 can be a servo motor or a stepping motor. The first motor 531 drives the gear 532 to rotate and roll the rack 533, so as to drive the rack 533 to move axially and drive the slider 52 to slide on the mounting seat 51. The structure is simple and compact, and the movement is stable and reliable.

[0041] In some possible implementation manners, as shown in Figure 3 The mounting seat 51 is provided with a linear guide rail 511, and the slider 52 is slidingly connected to the linear guide rail 511. The linear guide rail 511 and the slider 52 cooperate to ensure the straightness of the movement of the slider 52, so as to avoid the movement deflection of the slider 52 and the needle striking phenomenon of the picking needle 500, and improve the precision of the insertion of the picking needle 500 into the needle groove 401.

[0042] It should be noted that, as shown in Figure 3 The mounting seat 51 is provided with a needle guide hole 512, which is axially aligned with the picking needle 500 and is adapted to be penetrated by the picking needle 500. Since the picking needle 500 has an elongated straight structure, the suspended end thereof away from the slider 52 is prone to downward deflection. The needle guide hole 512 is arranged to guide and support the picking needle 500, so as to ensure the straightness of the picking needle 500, avoid the downward deflection of the suspended end of the picking needle 500 and the needle striking phenomenon, and improve the precision and stability of the insertion of the picking needle 500 into the needle groove 401.

[0043] In some embodiments, as shown in Figure 2 The rack 30 is provided with a telescopic driving member 31 and a slide rail 32, and the slide base 10 is slidingly connected to the slide rail 32 and connected to the output end of the telescopic driving member 31. The telescopic driving member 31 can be an electric push rod or an air cylinder. The telescopic driving member 31 drives the slide base 10 to move along the slide rail 32, so as to drive the collecting roller 40 to approach or move away from the drafting mechanism 20. The structure is simple and compact, and the movement is stable and reliable.

[0044] Specifically, the optional structure of the telescopic driving member 31 in the embodiment is as shown in Figure 4As shown, the telescopic driving member 31 comprises a second motor 311, a screw rod 312 and a guide seat 313; the second motor 311 is fixedly connected to the rack 30 and located at one end of the slide rail 32; the screw rod 312 is rotationally connected to the slide rail 32 and connected with the output end of the second motor 311; the guide seat 313 is sleeved on the screw rod 312 and threadedly cooperates with the screw rod 312, and the guide seat 313 is slidingly connected to the slide rail 32 and fixedly connected with the slide base 10.

[0045] The second motor 311 can be a servo motor or a step motor, which drives the screw rod 312 to rotate, so as to drive the guide seat 313 to slide along the slide rail 32 by the screw rod 312 and the guide seat 313 threadedly cooperating, and then drive the slide base 10 connected to the guide seat 313 to move linearly, which has high movement precision and is convenient for precise control.

[0046] It should be noted that, referring to Figure 1 and Figure 2 , the slide base 10 is rotationally connected with two collecting rollers 40 and two sets of picking needle assemblies 50, and the picking needles 500 of the two sets of picking needle assemblies 50 are respectively used for corresponding needle grooves 401 penetrating into the two collecting rollers 40. The two sets of picking needle assemblies 50 are respectively used for penetrating into the corresponding needle grooves 401 on the outer sides of the two collecting rollers 40 to pick cotton, so that the length of the picking needles 500 can be prevented from being too long, so that the picking needles 500 can have sufficient bending stiffness to break the cotton sliver.

[0047] Based on the same inventive concept, in combination with Figures 1 to 4 , it is understood that the embodiments of the present application also provide a cotton sliver sample preparation machine, and the above picking mechanism.

[0048] Compared with the prior art, the cotton sliver sample preparation machine provided by the utility model adopts the above picking mechanism, the slide base 10 is first slid to drive the collecting roller 40 to approach the drafting mechanism 20 when sample preparation, so that the cotton sample can be wound on the collecting roller 40 after passing through the drafting mechanism 20, and the slide base 10 is slid to drive the collecting roller 40 to move away from the drafting mechanism 20 after winding is completed, then the collecting roller 40 is rotated to an angle at which the needle groove 401 is aligned with the picking needle 500, the picking needle assembly 50 is slid to make the picking needle 500 inserted into the needle groove 401, then the slide base 10 drives the collecting roller 40 to move towards the drafting mechanism 20 again, so that the picking needle 500 breaks the cotton sliver wound on the collecting roller 40, then the picking needle assembly 50 is reversely moved to reset the picking needle 500, and the collecting roller 40 is rotated to peel off the cotton sliver, which not only saves time and effort, but also reduces personnel occupation, and can significantly improve the peeling speed and the sample preparation efficiency.

[0049] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cotton-picking mechanism, characterized in that, include: A slide block is slidably connected to the frame along the drafting direction of the drafting mechanism. The slide block is used to support the collecting roller and drive the collecting roller to move closer to or away from the drafting mechanism. The picking needle assembly is slidably connected to the frame along the axial direction of the collecting lint roller, and has picking needles extending along the axial direction of the collecting lint roller, the picking needles being adapted to insert into needle grooves on the peripheral wall of the collecting lint roller; Specifically, when the slide moves the collecting roller away from the drafting mechanism and the collecting roller rotates until the needle groove is axially aligned with the picking needle, the picking needle enters the needle groove so that the picking needle breaks the cotton sliver wound on the collecting roller when the slide approaches the drafting mechanism.

2. The cotton-picking mechanism as described in claim 1, characterized in that, The slide block is provided with a rotary drive and a detection sensor. The end face of the collecting roller is provided with a sensing hole offset from its rotation axis. The output end of the rotary drive is connected to the collecting roller in a transmission manner. The sensing end of the detection sensor is located on the rotational trajectory of the sensing hole around the rotation axis. When the collecting roller rotates to the point where the sensing hole and the sensing end of the detection sensor are axially aligned, the cotton picking needle is axially aligned with the needle groove.

3. The cotton-picking mechanism as described in claim 1, characterized in that, The needle-picking assembly includes: Mounting base, fixedly connected to the frame; A slider is slidably connected to the mounting base along the axial direction of the collecting roller, and the cotton picking needle is connected to the slider; A linear drive is mounted on the mounting base and its output end is connected to the slider.

4. The cotton-picking mechanism as described in claim 3, characterized in that, The linear drive component includes: The first motor is fixedly connected to the frame, and its output end is equipped with a gear; A rack is fixedly connected to the slider along the axial direction of the cotton-picking needle and meshes with the gear.

5. The cotton-picking mechanism as described in claim 3, characterized in that, The mounting base is provided with a linear guide rail, and the slider is slidably connected to the linear guide rail.

6. The cotton-picking mechanism as described in claim 3, characterized in that, The mounting base is provided with a guide needle hole, which is axially aligned with the cotton picking needle and is suitable for the cotton picking needle to pass through.

7. The cotton-picking mechanism as described in claim 1, characterized in that, The frame is equipped with a telescopic drive component and a slide rail; the slide block is slidably connected to the slide rail and connected to the output end of the telescopic drive component.

8. The cotton-picking mechanism as described in claim 7, characterized in that, The telescopic drive component includes: The second motor is fixedly connected to the frame and located at one end of the slide rail; The lead screw is rotatably connected to the slide rail and is connected to the output end of the second motor; A guide seat is sleeved on the lead screw and threadedly engaged with the lead screw. The guide seat is slidably connected to the slide rail and fixedly connected to the slide block.

9. The cotton-picking mechanism as described in any one of claims 1-8, characterized in that, The slide is rotatably connected to two collecting cotton rollers and two sets of picking needle assemblies. The picking needles of the two sets of picking needle assemblies are respectively used to enter the needle grooves of the two collecting cotton rollers.

10. A cotton sliver sample making machine, characterized in that, Includes the cotton-picking mechanism as described in any one of claims 1-9.

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