Cotton short fiber content detection sample preparation machine

Abstract

The application provides a cotton short fiber rate detection sample preparation machine, which comprises a rack, a controller, a drafting mechanism, a cotton winding mechanism, a cotton picking mechanism and a circulating cotton guiding mechanism arranged on the rack and controlled by the controller; the cotton winding mechanism is located on the discharging side of the drafting mechanism and has a winding roller for winding cotton fibers; the peripheral wall of the winding roller has needle slots penetrating through the axial direction thereof; the cotton picking mechanism is located on the side of the winding roller and is provided with a picking needle adapted to penetrate into the needle slots, the picking needle being used for picking off the cotton fibers wound on the winding roller; one end of the circulating cotton guiding mechanism is close to the winding roller, and the other end extends below the drafting mechanism to the feeding end of the drafting mechanism, and is used for stripping the cotton fibers from the winding roller and feeding them into the drafting mechanism again. The cotton short fiber rate detection sample preparation machine provided by the application does not need manual operation in the whole sample preparation process, which not only saves time and labor and saves labor, but also can significantly improve the sample preparation efficiency compared with the manual cotton fiber picking and stripping mode.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cotton processing, and particularly relates to a cotton short fiber rate detection sample preparation machine. BACKGROUND

[0002] The short fiber rate is one of important indexes for measuring the quality of cotton fibers, refers to the percentage of the weight (or the number) of the short fibers with a length shorter than a certain limit in the total weight (or the total number) of the fibers, and directly affects the spinning quality and the spinning cost. Before the short fiber rate detection, the cotton sample is first stretched and prepared by a sample preparation machine. The patent CN202221498060.7 discloses a quick cotton fiber sample preparation machine, which is a mainstream cotton fiber sample preparation equipment in the current industry. The main working process is that the cotton sample is fed into the stretching mechanism, stretched into a bundle of cotton fibers by the stretching roller, and then wound on the roller. Then the cotton strip is peeled off from the roller and fed into the stretching mechanism again. Usually, the cotton sample needs to be stretched at least six times to obtain the final detection sample. The existing defects of the sample preparation machine are that the cotton fibers need to be manually picked out from the collection roller, and then peeled off. Then the peeled cotton fibers are put into the feeding tray of the stretching mechanism again. The whole sample preparation process cannot be automated, and manual operation is time-consuming and laborious, which seriously affects the sample preparation efficiency. SUMMARY

[0003] The cotton short fiber rate detection sample preparation machine provided by the embodiments of the application aims to improve the sample preparation efficiency of the cotton short fiber rate detection sample and reduce the occupation of manual labor.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: a cotton short fiber rate detection sample preparation machine is provided, which comprises a rack, a controller, and a stretching mechanism, a winding mechanism, a picking mechanism, and a circulating guide mechanism arranged on the rack and controlled by the controller. The winding mechanism is located on the discharge side of the stretching mechanism and has a roller for winding the cotton fibers. The peripheral wall of the roller has a needle slot penetrating along the axial direction thereof. The picking mechanism is located on the side of the roller and is provided with a picking needle adapted to penetrate into the needle slot. The picking needle is used to break the cotton fibers wound on the roller. One end of the circulating guide mechanism is close to the roller, and the other end extends below the stretching mechanism to the feeding end of the stretching mechanism, so as to peel the cotton fibers from the roller and feed them into the stretching mechanism again.

[0005] In a possible implementation manner, the winding mechanism comprises:

[0006] A sliding seat is slidably connected to the rack in the stretching direction of the cotton fibers, and the roller is rotatably connected to the sliding seat.

[0007] A first driving member is arranged on the rack and electrically connected to the controller. The output end of the first driving member is in transmission connection with the sliding seat, and is used to drive the sliding seat to move the roller to the first position or the second position.

[0008] A second driving member is arranged on the sliding seat and electrically connected to the controller, an output end of the second driving member is in transmission connection with the roller, and the second driving member is used to drive the roller to rotate;

[0009] The first position is close to a discharging end of the drafting mechanism, and is used for winding and collecting the cotton fibers discharged by the drafting mechanism by the roller; and the second position is close to a feeding end of the circulating guide mechanism, and is used for aligning the needle with the needle slot and making the cotton fibers picked by the needle enter the circulating guide mechanism.

[0010] In some embodiments, a detection sensor is arranged on the sliding seat, the detection sensor is electrically connected to the controller, and an end surface of the roller is eccentrically provided with a detection hole; wherein when the roller is in the second position and rotates to be axially aligned with the needle slot, a sensing end of the detection sensor is aligned with the detection hole to obtain a detection signal, and the controller is used to control the second driving member to stop moving when the detection signal is received.

[0011] For example, the first driving member includes:

[0012] A first motor is fixedly connected to the rack and electrically connected to the controller;

[0013] A lead screw is rotationally connected to the rack along the drafting direction and connected to an output end of the first motor;

[0014] A sliding block is sleeved on the lead screw and threadedly matched with the lead screw, and the sliding block is axially slidably connected to the rack along the lead screw;

[0015] The sliding seat is fixedly connected to the sliding block.

[0016] For example, the cotton picking mechanism includes:

[0017] A fixed frame is fixedly connected to the rack and located at a side of the roller;

[0018] A needle seat is axially slidably connected to the fixed frame and provided with the needle;

[0019] A third driving member is arranged on the fixed frame and electrically connected to the controller, an output end of the third driving member is connected to the needle seat, and the third driving member is used to drive the needle seat to move to make the needle pass into or away from the needle slot.

[0020] For example, the third driving member includes:

[0021] A third motor is fixedly connected to the fixed frame and provided with a gear on an output end thereof;

[0022] A rack is fixedly connected to the needle seat and in meshing connection with the gear.

[0023] In some embodiments, the fixed frame or the rack is provided with a needle guide hole suitable for the needle to pass through.

[0024] In a possible implementation, the circulating cotton guiding mechanism comprises a first conveying belt and a second conveying belt which are synchronously and reversely operated, and a cotton guiding channel suitable for clamping the conveyed cotton fibers is formed between the first conveying belt and the second conveying belt; one end of the cotton guiding channel is close to the licker-in roller to form an inlet for guiding the cotton fibers broken on the licker-in roller into the cotton guiding channel, and the other end of the cotton guiding channel is close to the inlet end of the drafting mechanism to form an outlet for feeding the cotton fibers into the drafting mechanism.

[0025] For example, the first conveying belt has a first clamping surface facing the second conveying belt, the second conveying belt has a second clamping surface facing the first conveying belt, and the cotton guiding channel is formed between the second clamping surface and the first clamping surface; the first conveying belt further has a feeding conveying surface, one end of the feeding conveying surface is connected with the outlet, and the other end of the feeding conveying surface is connected with the inlet end of the drafting mechanism, so as to feed the cotton fibers discharged from the outlet into the drafting mechanism.

[0026] For example, the first conveying belt sequentially surrounds a plurality of first rotating rollers to form the first clamping surface, the feeding conveying surface, and a avoiding space suitable for accommodating the drafting mechanism; the second conveying belt sequentially surrounds a plurality of second rotating rollers and a plurality of first rotating rollers to form the second clamping surface.

[0027] The fourth driving member and the fifth driving member are electrically connected with the controller, respectively, the output end of the fourth driving member is in transmission connection with one of the first rotating rollers, and the output end of the fifth driving member is in transmission connection with one of the second rotating rollers.

[0028] The cotton short fiber rate detection sample preparation machine has the following beneficial effects: compared with the prior art, the cotton short fiber rate detection sample preparation machine, after the cotton sample passes through the drafting mechanism, the cotton fibers in the form of a bundle are wound on the licker-in roller of the licker-in mechanism, then the cotton fibers are broken by the pick needle of the licker-in mechanism inserted into the needle slot in the peripheral wall of the licker-in roller, the broken position of the cotton fibers enters the circulating cotton guiding mechanism, and after one rotation of the licker-in roller, the whole cotton fibers can be stripped off, and the stripped cotton fibers are fed into the drafting mechanism again through the circulating cotton guiding mechanism for the next drafting, and the final detection sample can be obtained by repeating the corresponding drafting times according to the sample preparation requirements, the whole process does not need manual operation, which not only saves time and labor and saves labor, but also significantly improves the sample preparation efficiency compared with the manual stripping of the cotton fibers. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The accompanying drawings illustrate the cotton short fiber rate detection sample preparation machine provided by the embodiments of the present application;

[0030] Figure 2 The accompanying drawings illustrate the cotton short fiber rate detection sample preparation machine provided by the embodiments of the present application;

[0031] Figure 3A schematic diagram of the three-dimensional structure of the cotton rolling mechanism and the cotton picking mechanism used in the embodiment of the present application;

[0032] Figure 4 A schematic diagram of the three-dimensional structure of the cotton rolling mechanism and the cotton picking mechanism used in the embodiment of the present application; Figure 3 A schematic diagram of the three-dimensional structure of the cotton rolling mechanism and the cotton picking mechanism used in the embodiment of the present application;

[0033] Figure 5 A schematic diagram of the three-dimensional structure of the cotton rolling mechanism and the cotton picking mechanism used in the embodiment of the present application; Figure 3 A schematic diagram of the three-dimensional structure of the cotton rolling mechanism and the cotton picking mechanism used in the embodiment of the present application;

[0034] Figure 6 A schematic diagram of the structure of the first conveying belt used in the embodiment of the present application;

[0035] Figure 7 A schematic diagram of the structure of the second conveying belt used in the embodiment of the present application.

[0036] In the figure: 10, frame; 20, controller; 30, drafting mechanism; 40, cotton rolling mechanism; 400, lapping roller; 401, needle slot; 402, detection hole; 41, sliding seat; 411, detection sensor; 42, first driving member; 421, first motor; 422, lead screw; 423, sliding block; 43, second driving member; 431, second motor; 432, synchronous wheel; 433, synchronous belt; 50, cotton picking mechanism; 500, picking needle; 51, fixed frame; 511, needle guide hole; 52, needle seat; 53, third driving member; 531, third motor; 532, gear; 533, rack; 60, circulating cotton guide mechanism; 601, feeding inlet; 602, discharging outlet; 61, first conveying belt; 611, first clamping surface; 612, feeding conveying surface; 613, first rotating roller; 6131, rotating roller one; 6132, rotating roller two; 6133, rotating roller three; 6134, rotating roller four; 6135, rotating roller five; 6136, rotating roller six; 6137, rotating roller seven; 614, fourth driving member; 62, second conveying belt; 621, second clamping surface; 622, second rotating roller; 6221, rotating roller eight; 6222, rotating roller nine; 6223, rotating roller ten; 6224, rotating roller eleven; 6225, rotating roller twelve; 623, fifth driving member. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0038] It should be noted that when an element is referred to as being "set on", "connected to" 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 for the convenience of describing the present application and simplifying 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" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "a plurality of", "several" is two or more, unless otherwise explicitly specified.

[0039] Please refer to Figures 1 to 7 The cotton short fiber rate detection sample preparation machine provided by the present application will be described. The cotton short fiber rate detection sample preparation machine comprises a rack 10, a controller 20, and a drafting mechanism 30, a cotton winding mechanism 40, a cotton picking mechanism 50, and a circulating cotton guiding mechanism 60 arranged on the rack 10 and controlled by the controller 20. The cotton winding mechanism 40 is located on the discharge side of the drafting mechanism 30 and has a roving roller 400 for winding cotton fibers. The peripheral wall of the roving roller 400 has a needle slot 401 penetrating along the axial direction thereof. The cotton picking mechanism 50 is located on the side of the roving roller 400 and is provided with a picking needle 500 adapted to penetrate into the needle slot 401. The picking needle 500 is used to break the cotton fibers wound on the roving roller 400. One end of the circulating cotton guiding mechanism 60 is close to the roving roller 400, and the other end extends below the drafting mechanism 30 to the feeding end of the drafting mechanism 30, for stripping the cotton fibers from the roving roller 400 and re-feeding them into the drafting mechanism 30.

[0040] It should be noted that the above-mentioned drafting mechanism 30 is based on a plurality of drafting rollers with different rotating speeds, and the rotating speed difference of the drafting rollers generates a drafting force on the cotton fibers. The drafting mechanism 30 has the same structure as the drafting mechanism 30 used in the prior art, and will not be described in detail here.

[0041] It should be understood that the action logic of the drafting mechanism 30, the cotton rolling mechanism 40, the cotton picking mechanism 50, and the circulating cotton guiding mechanism 60 in the embodiment is controlled by the controller 20; the specific working process is that the cotton sample is sent to the drafting mechanism 30 for the first time, the cotton fibers in the form of a bundle are formed by the drafting mechanism 30 and are wound on the rotating velvet roller 400, after all the cotton sample passes through the drafting mechanism 30 and is wound on the velvet roller 400, the cotton picking mechanism 50 is actuated to make the picking needle 500 penetrate into the needle groove 401, and then the distance between the picking needle 500 and the velvet roller 400 is increased, which can be achieved by the movement of the cotton rolling mechanism 40, the movement of the cotton picking mechanism 50, or the movement of both, so that the picking needle 500 breaks the cotton fibers; the broken part of the cotton fibers falls into the circulating cotton guiding mechanism 60, and then the velvet roller 400 rotates one revolution while the circulating cotton guiding mechanism 60 is running, so that the cotton fibers are separated from the velvet roller 400 and all enter the circulating cotton guiding mechanism 60, the circulating cotton guiding mechanism 60 delivers the cotton fibers to the feeding end of the drafting mechanism 30 and feeds the cotton fibers into the drafting mechanism 30 for the second time, and the above process is repeated according to the required drafting times of the sample preparation standard, usually six times, so that the final test sample is obtained.

[0042] Compared with the prior art, the cotton sample is wound on the velvet roller 400 of the cotton rolling mechanism 40 after passing through the drafting mechanism 30, then the picking needle 500 of the cotton picking mechanism 50 is inserted into the needle groove 401 in the wall of the velvet roller 400 to break the cotton fibers, the broken part of the cotton fibers enters the circulating cotton guiding mechanism 60, and the velvet roller 400 rotates one revolution to strip the whole cotton fibers, and the stripped cotton fibers are fed into the drafting mechanism 30 again by the circulating cotton guiding mechanism 60 for the next time of drafting, and the final test sample is obtained by repeating the corresponding drafting times according to the sample preparation requirements, the whole process does not need manual operation, which not only saves time and labor and saves labor, but also significantly improves the sample preparation efficiency compared with the manual stripping of cotton fibers.

[0043] In some embodiments, referring to Figure 2 and Figure 3The winding mechanism 40 comprises a sliding base 41, a first driving member 42 and a second driving member 43. The sliding base 41 is slidingly connected to the frame 10 along the drawing direction of the cotton fibers by the drawing mechanism 30, and a linter roller 400 is rotatably connected to the sliding base 41. The first driving member 42 is arranged on the frame 10 and electrically connected to the controller 20. The output end of the first driving member 42 is drivingly connected to the sliding base 41, and is used to drive the sliding base 41 to move the linter roller 400 to a first position or a second position. The second driving member 43 is arranged on the sliding base 41 and electrically connected to the controller 20. The output end of the second driving member 43 is drivingly connected to the linter roller 400, and is used to drive the linter roller 400 to rotate. The first position is close to the discharging end of the drawing mechanism 30, and is used to make the linter roller 400 wind and collect the cotton fibers discharged by the drawing mechanism 30. The second position is close to the feeding end of the circulating cotton guide mechanism 60, and is used to make the picking needle 500 aligningly insert into the needle slot 401, and make the cotton fibers picked by the picking needle 500 enter the circulating cotton guide mechanism 60.

[0044] The first driving member 42 and the second driving member 43 can be servo motors or stepping motors. After the cotton fibers are completely wound on the linter roller 400, the first driving member 42 drives the sliding base 41 to move away from the drawing mechanism 30 to the second position, and then the second driving member 43 drives the linter roller 400 to rotate to the angle at which the needle slot 401 aligns with the picking needle 500. After the picking needle 500 penetrates into the needle slot 401, the first driving member 42 reversely moves to make the linter roller 400 move away from the picking needle 500, so that the picking needle 500 breaks the cotton fibers. After the picking needle 500 breaks the cotton fibers, the picking needle 500 is reset. Then, the first driving member 42 drives the sliding base 41 to move to the second position again, and the circulating cotton guide mechanism 60 starts to operate at the same time. Meanwhile, the second driving member 43 drives the linter roller 400 to rotate one round. During the rotation of the linter roller 400, the broken end of the cotton fibers falls into the circulating cotton guide mechanism 60, and the circulating cotton guide mechanism 60 generates clamping and conveying force on the cotton fibers, so that the cotton fibers are completely stripped from the linter roller 400 and enter the circulating cotton guide mechanism 60, and the cotton fibers are fed into the drawing mechanism 30 again by the circulating cotton guide mechanism 60. At the same time, the first driving member 42 drives the sliding base 41 to move to the first position close to the drawing mechanism 30, so that the cotton fibers discharged by the drawing mechanism 30 are wound on the rotating linter roller 400 again. Thus, the cotton fibers can be automatically broken by the reciprocating movement of the winding mechanism 40 and the picking needle 500, and the cotton fibers can be automatically stripped from the linter roller 400 by the rotation of the linter roller 400 and the conveying force of the circulating cotton guide mechanism 60 on the cotton fibers. The repeated and multiple cycle drawing process of the cotton fibers can be realized without manual operation, which saves time and labor and is efficient.

[0045] Specifically, referring to Figure 3 and Figure 4The slide 41 is provided with a detection sensor 411, the detection sensor 411 is electrically connected with the controller 20, and the end surface of the fiber roller 400 is eccentrically provided with a detection hole 402; wherein when the fiber roller 400 is in the second position and rotates to the needle groove 401 axially aligned with the picking needle 500, the sensing end of the detection sensor 411 is aligned with the detection hole 402 to obtain a detection signal, and the controller 20 is used to control the second driving part 43 to stop moving when the detection signal is received.

[0046] The detection sensor 411 can be a proximity sensor or a reflective distance sensor, which triggers a detection signal when aligned with the detection hole 402 and feeds back to the controller 20. The controller 20 controls the second driving part 43 to stop moving according to the received detection signal, so that the fiber roller 400 forms a stationary state with the needle groove 401 axially aligned with the picking needle 500, so that the picking needle 500 can move axially and smoothly into the needle groove 401. By setting the detection sensor 411 to sense the position of the detection hole 402, the alignment control of the needle groove 401 and the picking needle 500 is realized, the control logic is simple and stable, and the alignment accuracy of the picking needle 500 and the needle groove 401 can be guaranteed, thereby improving the stability of the picking needle 500 into the needle groove 401.

[0047] As a specific embodiment of the first driving part 42, please refer to Figure 5 The first driving part 42 includes a first motor 421, a lead screw 422 and a sliding block 423; the first motor 421 is fixedly connected to the rack 10 and electrically connected with the controller 20; the lead screw 422 is rotatably connected to the rack 10 along the drafting direction and connected with the output end of the first motor 421; the sliding block 423 is sleeved on the lead screw 422 and threadedly matched with the lead screw 422, and the sliding block 423 is slidably connected to the rack 10 along the axial direction of the lead screw 422; wherein the slide 41 is fixedly connected to the sliding block 423.

[0048] The first motor 421 can be a servo motor or a stepper motor, which drives the lead screw 422 to rotate, and then drives the sliding block 423 to slide on the rack 10 through the thread matching relationship between the lead screw 422 and the sliding block 423, so that the slide 41 connected to the sliding block 423 moves along the drafting direction to the first position or the second position. The use of motor combined with threaded transmission can ensure the position accuracy of the first motor 421 driving the sliding block 423 to move, because the accuracy of the fiber roller 400 reaching the second position is directly related to the alignment accuracy of the picking needle 500 and the needle groove 401, so that the above driving mode can improve the running stability of the picking mechanism 50, and avoid the phenomenon of picking needle caused by the failure of the picking needle 500 to align with the needle groove 401.

[0049] The specific structure of the second driving part 43 is as follows Figure 3As shown, it comprises a second motor 431 electrically connected with the controller 20, two synchronous wheels 432 respectively sleeved on the output end of the second motor 431 and the roller shaft of the roller 400; the two synchronous wheels 432 are connected through a synchronous belt 433. Here, the second motor 431 can be a synchronous motor or a servo motor, the second motor 431 drives the roller 400 to rotate through the synchronous belt 433, so as to realize stable transmission and accurate control, which is beneficial to improve the control accuracy of the rotation angle of the roller 400, and ensures that the needle slot 401 can be aligned with the needle 500 to avoid the phenomenon of needle collision.

[0050] In some possible implementation manners, please refer to Figure 3 and Figure 4 The picking mechanism 50 comprises a fixed frame 51, a needle seat 52 and a third driving member 53; wherein the fixed frame 51 is fixedly connected to the rack 10 and located at the side of the roller 400; the needle seat 52 is slidingly connected to the fixed frame 51 along the axial direction of the roller 400 and is provided with the needle 500; the third driving member 53 is arranged on the fixed frame 51 and is electrically connected with the controller 20, the output end of the third driving member 53 is connected with the needle seat 52, for driving the needle seat 52 to move so as to make the needle 500 penetrate into or separate from the needle slot 401.

[0051] Here, the third driving member 53 can be a telescopic air cylinder or an electric push rod, the needle 500 connected with the needle seat 52 penetrates into the needle slot 401 by driving the needle seat 52 to move through the third driving member 53, after the needle 500 breaks the cotton fiber, the needle seat 52 is reversely driven to move by the third driving member 53 so as to make the needle 500 separate from the needle slot 401, thereby avoiding the influence of the needle 500 on the smoothness of the cotton fiber peeling from the roller 400.

[0052] Specifically, the third driving member 53 of the embodiment adopts the structure as Figure 4 shown, the third driving member 53 comprises a third motor 531 and a rack 533; wherein the third motor 531 is fixedly connected to the fixed frame 51 and the output end is sleeved with a gear 532; the rack 533 is fixedly connected to the needle seat 52 and is in meshing connection with the gear 532. Since the position accuracy of the axial movement of the needle 500 is low, here the third motor 531 can adopt a conventional motor, of course, a servo motor or a stepping motor can also be adopted, the gear 532 is driven to rotate through the third motor 531, so as to make the rack 533 driven to move by the gear 532 rolling and pressing, and then the needle seat 52 connected with the rack 533 drives the needle 500 to move, which is simple and compact in structure and stable in movement.

[0053] In order to avoid the part of the needle 500 far away from the needle seat 52 from bending down or shaking, please refer to Figure 4The fixed frame 51 or the rack 10 is provided with a guide needle hole 511 suitable for the pick 500 to pass through. The straightness of the pick 500 is ensured by radially constraining the pick 500 through the guide needle hole 511, and the pick 500 is prevented from shaking, thereby improving the stability of the pick 500 entering the needle groove 401, and avoiding the stoppage of the machine to affect the sample preparation efficiency.

[0054] As a specific embodiment of the above-mentioned circulating cotton guide mechanism 60, please refer to Figure 2 、 Figure 6 and Figure 7 The circulating cotton guide mechanism 60 includes a first conveying belt 61 and a second conveying belt 62 which are synchronously and reversely operated, and a cotton guide channel suitable for clamping and conveying cotton fibers is formed between the first conveying belt 61 and the second conveying belt 62. One end of the cotton guide channel is close to the roller 400 to form a feeding port 601, which is used to guide the cotton fibers broken by the pick 500 on the roller 400 into the cotton guide channel. The other end of the cotton guide channel is close to the feeding end of the drafting mechanism 30 to form a discharging port 602, which is used to feed the cotton fibers into the drafting mechanism 30.

[0055] The belt surfaces of the first conveying belt 61 and the second conveying belt 62 are in close contact with each other and are synchronously and reversely operated, thereby forming a cotton guide channel capable of clamping and conveying cotton fibers. After the cotton fibers are broken by the pick 500, the broken part of the cotton fibers falls into the feeding port 601 of the cotton guide channel. Then, under the clamping and conveying traction of the cotton guide channel, the cotton fibers are completely stripped from the rotating roller 400, and the cotton guide channel with the clamping function can convey the cotton fibers along a curved path, so that the cotton fibers return to the feeding end of the drafting mechanism 30 after circling the drafting mechanism 30, without manual operation to realize the stripping and transfer of the cotton fibers, thereby saving manpower and improving the sample preparation efficiency.

[0056] It should be noted that the first conveying belt 61 has a first clamping surface 611 facing the second conveying belt 62, and the second conveying belt 62 has a second clamping surface 621 facing the first conveying belt 61, and the cotton guide channel is formed between the second clamping surface 621 and the first clamping surface 611. The first conveying belt 61 also has a feeding conveying surface 612, one end of which is connected to the discharging port 602, and the other end is connected to the feeding end of the drafting mechanism 30, which is used to feed the cotton fibers discharged from the discharging port 602 into the drafting mechanism 30.

[0057] In order to improve the sample preparation efficiency, the peeling and transferring speed of the cotton fibers can be accelerated as much as possible, so the first conveying belt 61 and the second conveying belt 62 are adapted to adopt a faster running speed, and therefore the speed of the cotton fibers discharged from the discharge port 602 is much faster than the feeding speed of the drafting mechanism 30. In this case, if the cotton fibers are directly fed from the discharge port 602 to the drafting mechanism 30, a blockage phenomenon will occur. Therefore, part of the belt surface of the first conveying belt 61 is used as a feeding conveying surface 612, and the cotton fibers fall on the feeding conveying surface 612 after being discharged from the discharge port 602. The cotton fibers can slip on the feeding conveying surface 612 due to the lack of pressure, so that the drafting mechanism 30 is changed from passive forced feeding to active feeding, thereby avoiding the problem of blockage of the feeding end of the drafting mechanism 30 caused by forced feeding, and improving the smoothness of the sample preparation process.

[0058] Specifically, please refer to Figure 2 、 Figure 6 and Figure 7 , the first conveying belt 61 successively surrounds a plurality of first rotating rollers 613 to form a first clamping surface 611, a feeding conveying surface 612, and forms an avoidance space suitable for accommodating the drafting mechanism 30; the second conveying belt 62 successively surrounds a plurality of second rotating rollers 622 and a plurality of first rotating rollers 613 to form a second clamping surface 621; the rack 10 is provided with a fourth driving member 614 and a fifth driving member 623 which are respectively electrically connected with the controller 20, the output end of the fourth driving member 614 is in transmission connection with one of the first rotating rollers 613, and the output end of the fifth driving member 623 is in transmission connection with one of the second rotating rollers 622.

[0059] The first clamping surface 611 of the first conveying belt 61 and the second clamping surface 621 of the second conveying belt 62 share a plurality of first rotating rollers 613, thereby forming a state in which the first clamping surface 611 and the second clamping surface 621 are in close contact with each other to clamp and convey the cotton fibers. In order to ensure the compactness of the overall structure, the first rotating rollers 613 are used to guide the path of the first conveying belt 61 to form an avoidance space, thereby forming a structure in which the first conveying belt 61 surrounds the drafting mechanism 30, reducing the space occupation. In order to meet the synchronous directional running requirement of the first conveying belt 61 and the second conveying belt 62, they are respectively provided with independent driving, that is, one of the first rotating rollers 613 is driven to rotate by the fourth driving member 614, and one of the second rotating rollers 622 is driven to rotate by the fifth driving member 623, thereby ensuring the stability of the clamping and conveying of the cotton fibers.

[0060] It should be noted that the wrap angle between the first rotating roller 613 connected with the output end of the fourth driving member 614 and the first conveying belt 61 is not less than ninety degrees, and the wrap angle between the second rotating roller 622 connected with the output end of the fifth driving member 623 and the second conveying belt 62 is not less than ninety degrees, so as to ensure that the whole first conveying belt 61 can be driven to operate stably by driving one first rotating roller 613, and the whole second conveying belt 62 can be driven to operate stably by driving one second rotating roller 622, thereby improving the compactness of the transmission structure.

[0061] Specifically, referring to Figure 6 , each first rotating roller 613 is rotating roller one 6131, rotating roller two 6132, rotating roller three 6133, rotating roller four 6134, rotating roller five 6135, rotating roller six 6136, and rotating roller seven 6137; the belt surface of the first conveying belt 61 passes through rotating roller one 6131, rotating roller four 6134, rotating roller seven 6137, rotating roller two 6132, rotating roller six 6136, rotating roller five 6135, rotating roller three 6133 in turn and returns to rotating roller one 6131 to form a closed loop, wherein the belt surface of the first conveying belt 61 located between rotating roller three 6133 and rotating roller five 6135, between rotating roller five 6135 and rotating roller six 6136, and between rotating roller six 6136 and rotating roller two 6132 forms a first clamping surface 611, and the belt surface located between rotating roller three 6133 and rotating roller one 6131 forms a feeding conveying surface 612.

[0062] Referring to Figure 7 , each second rotating roller 622 is rotating roller eight 6221, rotating roller nine 6222, rotating roller ten 6223, rotating roller eleven 6224, and rotating roller twelve 6225; the second conveying belt 62 is guided by rotating roller three 6133, rotating roller five 6135, and rotating roller six 6136 of the first conveying belt 61, so as to form a closed loop of the second conveying belt passing through rotating roller eight 6221, rotating roller three 6133, rotating roller five 6135, rotating roller six 6136, rotating roller nine 6222, rotating roller ten 6223, rotating roller eleven 6224, and rotating roller twelve 6225 in turn and returning to rotating roller eight 6221; the belt surface of the second conveying belt 62 located between rotating roller eight 6221 and rotating roller three 6133, between rotating roller three 6133 and rotating roller five 6135, between rotating roller five 6135 and rotating roller six 6136, and between rotating roller six 6136 and rotating roller nine 6222 forms a second clamping surface 621.

[0063] The feeding port 601 is formed between rotating roller two 6132 and rotating roller nine 6222, the discharging port 602 is formed between rotating roller eight 6221 and rotating roller three 6133, and rotating roller one 6131 is located at the feeding end of the drafting mechanism 30 for feeding; the fourth driving member 614 is in transmission connection with rotating roller four 6134, and the fifth driving member 623 is in transmission connection with rotating roller ten 6223.

[0064] The working process of the cotton short fiber rate detection sample preparation machine provided by the embodiment is as follows:

[0065] The cotton sample for sample preparation is placed on the conveying feeding surface, the cotton sample enters the drafting mechanism 30 and is drafted by the drafting roller to form a bundle of cotton fibers, the bundle of cotton fibers is wound on the licker-in roller 400 in the first position, after the winding of the cotton fibers is completed, the first driving member 42 drives the licker-in roller 400 to move to the second position, and after the sensing end of the detection sensor 411 is aligned with the detection hole 402 to obtain a detection signal, the controller 20 controls the second driving member 43 to stop rotating, at this time, the needle slot 401 is aligned with the picking needle 500, the third driving member 53 drives the needle holder 52 to move to make the picking needle 500 penetrate into the needle slot 401, then the first driving member 42 drives the licker-in roller 400 to move to the first position, so that the picking needle 500 breaks the cotton fibers, then the first driving member 42 drives the licker-in roller 400 to return to the second position, so that the broken position of the cotton fibers enters the feeding port 601 of the circulating cotton guide mechanism 60, then the first conveying belt 61 and the second conveying belt 62 are used to clamp and convey the cotton fibers to generate a traction force, so that the process of one rotation of the licker-in roller 400 can strip the cotton fibers, then the cotton fibers pass through the cotton guide channel to reach the feeding conveying surface 612, and in the process, the first driving member 42 drives the licker-in roller 400 to return to the first position to prepare to re-wind the cotton fibers drafted next time, and the cotton fibers on the feeding conveying surface 612 start to be fed into the drafting mechanism 30 to be drafted next time, and the process is repeated six times to obtain the final cotton fiber sample for short fiber rate detection.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sample preparation machine for detecting cotton short fiber content, characterized in that, It includes a frame, a controller, and a drafting mechanism, a cotton winding mechanism, a cotton picking mechanism, and a circulating cotton guiding mechanism located on the frame and controlled by the controller; The cotton winding mechanism is located on the discharge side of the drafting mechanism and has a flocking roller for winding cotton fibers, the peripheral wall of which has a needle groove extending through its axial direction. The cotton picking mechanism is located on the side of the pile roller and is provided with a picking needle suitable for inserting into the needle groove. The picking needle is used to pick off the cotton fibers wound on the pile roller. One end of the circulating cotton guiding mechanism is close to the pile roller, and the other end extends below the drafting mechanism to the feed end of the drafting mechanism, for peeling the cotton fibers off the pile roller and refeeding them into the drafting mechanism; The cotton-picking mechanism includes: A fixing frame is fixedly connected to the machine frame and located on the side of the wool roller; The needle holder is slidably connected to the fixed frame along the axial direction of the wool roller and is provided with the picking needle; A third driving component is disposed on the fixed frame and electrically connected to the controller. The output end of the third driving component is connected to the needle holder and is used to drive the needle holder to move so that the picking needle enters or leaves the needle groove. The cotton rolling mechanism includes: A slide block is slidably connected to the frame along the stretching direction of the cotton fibers by the stretching mechanism, and the pile roller is rotatably connected to the slide block; A first driving component is disposed on the frame and electrically connected to the controller. The output end of the first driving component is connected to the slide block for driving the slide block to move the wool roller to a first position or a second position. The second driving component is disposed on the slide and electrically connected to the controller. The output end of the second driving component is connected to the pile roller drive and is used to drive the pile roller to rotate. The first position is close to the discharge end of the drafting mechanism, which is used to allow the pile roller to wind and collect the cotton fibers discharged by the drafting mechanism; the second position is close to the feed end of the circulating cotton guiding mechanism, which is used to allow the picking needle to be aligned and inserted into the needle groove, and to allow the cotton fibers picked by the picking needle to enter the circulating cotton guiding mechanism.

2. The cotton short fiber rate detection sample preparation machine as described in claim 1, characterized in that, The slide is equipped with a detection sensor, which is electrically connected to the controller. The end face of the wool roller is eccentrically provided with a detection hole. When the wool roller is in the second position and rotates until the needle groove is axially aligned with the picking needle, the sensing end of the detection sensor aligns with the detection hole to obtain a detection signal. The controller is used to control the second drive member to stop moving when it receives the detection signal.

3. The cotton short fiber rate detection sample preparation machine as described in claim 1, characterized in that, The first driving element includes: The first motor is fixedly connected to the frame and electrically connected to the controller; The lead screw is rotatably connected to the frame along the stretching direction and is connected to the output end of the first motor; A slider is sleeved on the lead screw and threadedly engaged with the lead screw; the slider is slidably connected to the frame along the axial direction of the lead screw. The slide block is fixedly connected to the slider.

4. The cotton short fiber content detection sample preparation machine as described in claim 1, characterized in that, The third driving component includes: The third motor is fixedly connected to the fixed frame and has a gear sleeved at its output end; A rack is fixedly connected to the pin seat and meshes with the gear.

5. The cotton short fiber content detection sample preparation machine as described in claim 1, characterized in that, The fixing frame or the machine frame is provided with a guide hole suitable for the picking needle to pass through.

6. The cotton short fiber content detection sample preparation machine as described in any one of claims 1-5, characterized in that, The circulating cotton guiding mechanism includes a first conveyor belt and a second conveyor belt that run synchronously in opposite directions. A cotton guiding channel suitable for clamping and conveying the cotton fibers is formed between the first conveyor belt and the second conveyor belt. One end of the cotton guiding channel is close to the pile roller to form a feed port, which is used to introduce the cotton fibers that have been broken off on the pile roller into the cotton guiding channel. The other end of the cotton guiding channel is close to the feed end of the drafting mechanism to form a discharge port, which is used to feed the cotton fibers into the drafting mechanism.

7. The cotton short fiber content detection sample preparation machine as described in claim 6, characterized in that, The first conveyor belt has a first clamping surface facing the second conveyor belt, and the second conveyor belt has a second clamping surface facing the first conveyor belt. The cotton guiding channel is formed between the second clamping surface and the first clamping surface. The first conveyor belt also has a feeding conveying surface, one end of which is connected to the discharge port and the other end of which is connected to the feed end of the drafting mechanism, for feeding cotton fibers discharged from the discharge port into the drafting mechanism.

8. The cotton short fiber content detection sample preparation machine as described in claim 7, characterized in that, The first conveyor belt sequentially surrounds multiple first rollers to form the first clamping surface and the feeding conveying surface, and forms a clearance space suitable for accommodating the stretching mechanism; the second conveyor belt sequentially surrounds multiple second rollers and several first rollers to form the second clamping surface; The frame is equipped with a fourth drive unit and a fifth drive unit that are electrically connected to the controller respectively. The output end of the fourth drive unit is connected to one of the first rollers, and the output end of the fifth drive unit is connected to one of the second rollers.

Images