Sampling machine for detecting cotton short fiber rate

Abstract

The invention provides a cotton short fiber rate detection sampling machine. The cotton short fiber rate detection sampling machine comprises a rack, a controller, and a drafting mechanism, a cotton rolling mechanism, a cotton picking mechanism and a circulating cotton guiding mechanism which are arranged on the rack and controlled by the controller, the cotton winding mechanism is located on the discharging side of the drafting mechanism and provided with a clearer roller used for winding cotton fibers, and the peripheral wall of the clearer roller is provided with a needle groove penetrating in the axial direction of the clearer roller. The cotton picking mechanism is located on the side of the clearer roller and provided with a picking needle suitable for penetrating into the needle groove, and the picking needle is used for picking off cotton fibers wound on the clearer roller. One end of the circulating cotton guide mechanism is close to the clearer roller, and the other end of the circulating cotton guide mechanism extends to the feeding end of the drafting mechanism from the lower portion of the drafting mechanism and is used for stripping cotton fibers from the clearer roller and feeding the cotton fibers into the drafting mechanism again. According to the cotton short fiber rate detection sampling machine, manual operation is not needed in the whole sampling process, time and labor are saved, labor is saved, and the sampling efficiency can be remarkably improved compared with the mode that cotton fibers are picked and stripped manually.

Description

Technical Field

[0001] The invention belongs to the technical field of cotton processing, and in particular relates to a cotton short fiber rate detection and sampling machine. Background Art

[0002] The staple rate is one of the important indicators for measuring the quality of cotton fibers. It refers to the percentage of the weight (or number of roots) of short fibers shorter than a certain limit in the cotton fibers to the total weight (or total number of roots). The staple rate directly affects the spinning quality and spinning cost. The first thing to do before testing the staple rate is to stretch the cotton sample through a sample making machine. Patent CN202221498060.7 discloses a rapid cotton fiber sample making machine, which is the mainstream cotton fiber sample making equipment currently used in the industry. Its main working process is that the cotton sample is fed into the drafting mechanism, stretched by the drafting roller to form a tow-like cotton fiber, and then wound on the velvet roller. Then, the cotton strips are peeled off from the velvet roller and fed into the drafting mechanism again. It usually takes at least six repeated draftings to obtain the final test sample. The defect of the current sample making machine is that it is necessary to manually pick out the cotton fibers on the collecting roller and then peel them off, and then put the peeled cotton fibers back into the feed tray of the drafting mechanism. The entire sample making process cannot be automated, and manual operation is time-consuming and labor-intensive, which seriously affects the sample making efficiency. Summary of the invention

[0003] The embodiment of the present invention provides a cotton short fiber rate detection sample making machine, which aims to improve the sample making efficiency of cotton short fiber rate detection samples and reduce manpower occupation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a cotton short fiber rate detection sampling machine, including a frame, a controller, and a drafting mechanism, a cotton rolling mechanism, a cotton picking mechanism, and a circulating cotton guiding mechanism arranged on the frame and controlled by the controller; the cotton rolling mechanism is located on the discharge side of the drafting mechanism and has a velvet roller for winding cotton fibers, and the peripheral wall of the velvet roller has a needle groove penetrating along its axial direction; the cotton picking mechanism is located on the side of the velvet roller and is provided with a picking needle suitable for penetrating the needle groove, and the picking needle is used to pick and cut the cotton fibers wound on the velvet roller; one end of the circulating cotton guiding mechanism is close to the velvet roller, and the other end extends from the bottom of the drafting mechanism to the feeding end of the drafting mechanism, which is used to peel the cotton fibers from the velvet roller and re-feed them into the drafting mechanism.

[0005] In a possible implementation, the cotton rolling mechanism includes: A slide is slidably connected to the frame along the drafting direction of the drafting mechanism on the cotton fibers, and a velvet roller is rotatably connected to the slide; A first driving member is disposed on the frame and electrically connected to the controller, and an output end of the first driving member is transmission-connected to the slide seat, and is used to drive the slide seat to drive the velvet roller to move to the first position or the second position; A second driving member is disposed on the slide and electrically connected to the controller, and an output end of the second driving member is transmission-connected to the velvet roller for driving the velvet roller to rotate; Among them, the first position is close to the discharge end of the drafting mechanism, which is used to make the velvet roller wind and collect the cotton fibers discharged from the drafting mechanism; the second position is close to the feed end of the circulating cotton guiding mechanism, which is used to align the picking needle and insert it into the needle groove, and make the cotton fibers cut by the picking needle enter the circulating cotton guiding mechanism.

[0006] In some embodiments, a detection sensor is provided on the slide seat, and the detection sensor is electrically connected to the controller. A detection hole is eccentrically provided on the end face of the velvet roller. When the velvet roller is in the second position and rotates until the needle groove is aligned with the needle picking axis, the sensing end of the detection sensor is aligned with the detection hole to obtain a detection signal. The controller is used to control the second driving member to stop moving when the detection signal is received.

[0007] Exemplarily, the first driving member includes: A first motor, fixedly connected to the frame and electrically connected to the controller; A lead screw is rotatably connected to the frame along the stretching direction and is connected to the output end of the first motor; The slider is sleeved on the lead screw and matched with the lead screw thread, and the slider is slidably connected to the frame along the axial direction of the lead screw; Wherein, the sliding seat is fixedly connected to the sliding block.

[0008] For example, the cotton picking mechanism includes: A fixed frame, fixedly connected to the frame and located on the side of the velvet roller; The needle seat is slidably connected to the fixing frame along the axial direction of the velvet roller and is provided with a picking needle; The third driving member is arranged on the fixing frame and is electrically connected to the controller. The output end of the third driving member is connected to the needle seat to drive the needle seat to move so that the picking needle can penetrate into or be pulled out of the needle slot.

[0009] Exemplarily, the third driving member includes: A third motor is fixedly connected to the fixing frame and has a gear sleeve on its output end; The rack is fixedly connected to the needle seat and meshed with the gear.

[0010] In some embodiments, a guide needle hole suitable for the needle to pass through is provided on the fixing frame or the frame.

[0011] In one possible implementation, the circulating cotton guiding mechanism includes a first conveyor belt and a second conveyor belt running synchronously in opposite directions, and a cotton guiding channel suitable for clamping and conveying 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 velvet roller to form a feed port, and the feed port is used to introduce the cotton fibers cut off from the velvet roller into the cotton guiding channel, and the other end of the cotton guiding channel is close to the feed end of the drafting mechanism to form a discharge port, and the discharge port is used to feed the cotton fibers into the drafting mechanism.

[0012] Exemplarily, 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, and a 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 the feeding conveying surface is connected to the discharge port, and the other end is connected to the feed end of the drafting mechanism, which is used to feed the cotton fibers discharged from the discharge port into the drafting mechanism.

[0013] For example, the first conveyor belt sequentially surrounds a plurality of first rollers to form a first clamping surface, a feeding and conveying surface, and forms an escape space suitable for accommodating the drafting mechanism; the second conveyor belt sequentially surrounds a plurality of second rollers and a plurality of first rollers to form a second clamping surface; The frame is provided with a fourth driving member and a fifth driving member which are electrically connected to the controller respectively. The output end of the fourth driving member is drivingly connected to one of the first rollers, and the output end of the fifth driving member is drivingly connected to one of the second rollers.

[0014] The beneficial effect of the cotton short fiber rate detection sample making machine provided by the present invention is that compared with the prior art, in the cotton short fiber rate detection sample making machine of the present invention, the bundle-like cotton fibers formed after the cotton sample passes through the stretching mechanism are wound on the velvet roller of the cotton winding mechanism, and then the picking needle of the cotton picking mechanism is inserted into the needle groove of the peripheral wall of the velvet roller to pick and cut the cotton fibers, and after the broken end of the cotton fibers enters the circulating cotton guiding mechanism, the velvet roller rotates one circle to peel off the cotton fibers as a whole, and the peeled cotton fibers are re-fed into the stretching mechanism through the circulating cotton guiding mechanism for the next stretching, and the final test sample can be obtained by repeating the corresponding number of stretching times according to the sample preparation requirements. The whole process does not require manual operation, which not only saves time, effort and labor, but also can significantly improve the sample preparation efficiency compared with the manual cotton fiber picking and stripping method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a cotton short fiber rate detection sample making machine provided in an embodiment of the present invention; Figure 2 A schematic cross-sectional view of a cotton short fiber rate detection sample making machine provided in an embodiment of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the cotton rolling mechanism and the cotton picking mechanism used in the embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle; Figure 5 for Figure 3 A schematic diagram of the local enlarged structure at B in the middle; Figure 6 A schematic diagram of the structure of a first conveyor belt used in an embodiment of the present invention; Figure 7This is a schematic structural diagram of the second conveyor belt used in an embodiment of the present invention.

[0016] In the figure: 10, frame; 20, controller; 30, drafting mechanism; 40, cotton rolling mechanism; 400, velvet roller; 401, needle groove; 402, detection hole; 41, slide seat; 411, detection sensor; 42, first driving member; 421, first motor; 422, lead screw; 423, slide block; 43, second driving member; 431, second motor; 432, synchronous wheel; 433, synchronous belt; 50, cotton picking mechanism; 500, picking needle; 51, fixing frame; 511, needle guide hole; 52, needle seat; 53, third driving member; 531, third motor; 532, gear; 533, rack; 60, circulating cotton guiding mechanism; 601, feeding port; 602, discharging port; 61, first conveyor belt; 611, first clamping surface; 612, feeding conveying surface; 613, first roller; 6131, roller one; 6132, roller two; 6133, roller three; 6134, roller four; 6135, roller five; 6136, roller six; 6137, roller seven; 614, fourth driving member; 62, second conveyor belt; 621, second clamping surface; 622, second roller; 6221, roller eight; 6222, roller nine; 6223, roller ten; 6224, roller eleven; 6225, roller twelve; 623, fifth driving member. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it may 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", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" and the like are used for descriptive purposes only, 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 "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0019] Please also read Figures 1 to 7, the cotton short fiber rate detection sample making machine provided by the present invention is now described. The cotton short fiber rate detection sample making machine comprises a frame 10, a controller 20, and a drafting mechanism 30, a cotton rolling mechanism 40, a cotton picking mechanism 50, and a circulating cotton guiding mechanism 60 arranged on the frame 10 and controlled by the controller 20; the cotton rolling mechanism 40 is located at the discharge side of the drafting mechanism 30 and has a velvet roller 400 for winding cotton fibers, and the peripheral wall of the velvet roller 400 has a needle groove 401 penetrating along its axial direction; the cotton picking mechanism 50 is located on the side of the velvet roller 400 and is provided with a picking needle 500 suitable for penetrating the needle groove 401, and the picking needle 500 is used to pick and cut the cotton fibers wound on the velvet roller 400; one end of the circulating cotton guiding mechanism 60 is close to the velvet roller 400, and the other end extends from the bottom of the drafting mechanism 30 to the feeding end of the drafting mechanism 30, which is used to peel the cotton fibers from the velvet roller 400 and re-feed the drafting mechanism 30.

[0020] It should be noted that the above-mentioned stretching mechanism 30 is based on a plurality of stretching rollers with different rotation speeds, and utilizes the rotation speed difference of the stretching rollers to generate a stretching force on the cotton fibers. The stretching mechanism 30 has the same structure as the stretching mechanism 30 used in the prior art and will not be described in detail here.

[0021] It should be understood that in this embodiment, 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 are controlled by the controller 20; the specific working process is that the cotton sample is sent into the drafting mechanism 30 for the first drafting, and the tow-like cotton fibers formed by the drafting mechanism 30 are wound on the rotating velvet roller 400. When all the cotton samples have passed through the drafting mechanism 30 and are 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. The specific increase method can be the movement of the cotton rolling mechanism 40, or The cotton picking mechanism 50 may move, or both may move away from each other at the same time, so that the picking needle 500 picks and breaks the cotton fibers; the broken ends of the cotton fibers fall into the circulating cotton guiding mechanism 60, and then the velvet roller 400 rotates one circle 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, and the circulating cotton guiding mechanism 60 transports the cotton fibers to the feed end of the drafting mechanism 30 and feeds the cotton fibers into the drafting mechanism 30 for a second drafting, and the above process is repeated according to the number of drafting times required by the sample preparation standard, usually repeated six times, to obtain the final test sample.

[0022] Compared with the prior art, the cotton short fiber rate detection sample making machine provided in the present embodiment is that the bundle-like cotton fibers formed by the cotton sample passing through the drafting mechanism 30 are wound on the velvet roller 400 of the cotton winding mechanism 40, and then the picking needle 500 of the cotton picking mechanism 50 is inserted into the needle groove 401 on the peripheral wall of the velvet roller 400 to pick and cut the cotton fibers. After the broken end of the cotton fibers enters the circulating cotton guiding mechanism 60, the velvet roller 400 rotates one circle to peel off the cotton fibers as a whole, and the peeled cotton fibers are re-fed into the drafting mechanism 30 through the circulating cotton guiding mechanism 60 for the next drafting. The final test sample can be obtained by repeating the corresponding number of drafting times according to the sample preparation requirements. The whole process does not require manual operation, which not only saves time, effort and labor, but also can significantly improve the sample preparation efficiency compared with the manual cotton fiber picking and stripping method.

[0023] In some embodiments, see Figure 2 and Figure 3 The cotton rolling mechanism 40 includes a slide 41, a first driving member 42 and a second driving member 43; the slide 41 is slidably connected to the frame 10 along the drafting direction of the cotton fiber by the drafting mechanism 30, and a velvet roller 400 is rotatably connected to the slide 41; the first driving member 42 is arranged on the frame 10 and is electrically connected to the controller 20, and the output end of the first driving member 42 is transmission-connected to the slide 41, and is used to drive the slide 41 to drive the velvet roller 400 to move to the first position or the second position; the second driving member 43 is arranged on the slide 41 and is electrically connected to the controller 20, and the output end of the second driving member 43 is transmission-connected to the velvet roller 400, and is used to drive the velvet roller 400 to rotate; wherein, the first position is close to the discharge end of the drafting mechanism 30, and is used to make the velvet roller 400 wind and collect the cotton fibers discharged by the drafting mechanism 30; the second position is close to the feed end of the circulating cotton guiding mechanism 60, and is used to align the picking needle 500 and insert it into the needle groove 401, and make the cotton fibers picked up by the picking needle 500 enter the circulating cotton guiding mechanism 60.

[0024] The first driving member 42 and the second driving member 43 can both adopt servo motors or stepper motors. After the cotton fibers are all wound around the velvet roller 400, the first driving member 42 drives the slide 41 away from the drafting mechanism 30 to the second position, and then the second driving member 43 drives the velvet roller 400 to rotate to the angle where the needle groove 401 is aligned with the picking needle 500. After the picking needle 500 penetrates the needle groove 401, the first driving member 42 moves in the opposite direction to move the velvet roller 400 away from the picking needle 500, so that the picking needle 500 picks the cotton fibers, and the picking needle 500 resets after picking the cotton fibers. Then the first driving member 42 drives the slide 41 to move to the second position again, and then the circulating cotton guiding mechanism 60 starts to operate. At the same time, the second driving member 43 drives the velvet roller 400 to rotate one circle. During the rotation of the velvet roller 400, the broken position of the cotton fibers falls into the circulating cotton guiding mechanism 6 0, and utilize the circulating cotton guiding mechanism 60 to generate a clamping and conveying force on the cotton fibers, so that the cotton fibers are completely peeled off from the velvet roller 400 and enter the circulating cotton guiding mechanism 60, and the circulating cotton guiding mechanism 60 feeds the cotton fibers into the drafting mechanism 30 again, and at the same time, the first driving member 42 drives the slide 41 to move again to reach the first position close to the drafting mechanism 30, so that the cotton fibers discharged from the drafting mechanism 30 are wound onto the rotating velvet roller 400 again; thus, the reciprocating motion of the cotton winding mechanism 40 cooperates with the picking needle 500 to automatically pick the cotton fibers, and at the same time, the rotation of the velvet roller 400 and the conveying force of the circulating cotton guiding mechanism 60 on the cotton fibers are utilized to automatically peel the cotton fibers from the velvet roller 400, and the repeated and multiple cycle drafting process of the cotton fibers can be realized without manual operation, which is time-saving, labor-saving and efficient.

[0025] For details, see Figure 3 and Figure 4 A detection sensor 411 is provided on the slide seat 41, and the detection sensor 411 is electrically connected to the controller 20. A detection hole 402 is eccentrically provided on the end face of the velvet roller 400. When the velvet roller 400 is in the second position and rotates until the needle groove 401 is 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 member 43 to stop moving when receiving the detection signal.

[0026] Here, the detection sensor 411 can specifically be a proximity sensor or a reflective distance sensor. When the detection sensor 411 is aligned with the detection hole 402, a detection signal is triggered and fed back to the controller 20. The controller 20 controls the second driving member 43 to stop moving according to the received detection signal, so that the velvet roller 400 forms a static state in which the needle groove 401 and the picking needle 500 are axially aligned, thereby allowing the picking needle 500 to move axially and smoothly penetrate the needle groove 401; here, the alignment control of the needle groove 401 and the picking needle 500 is realized by setting the detection sensor 411 to sense the position of the detection hole 402. The control logic is simple and stable, which can ensure the alignment accuracy of the picking needle 500 and the needle groove 401, thereby improving the stability of the picking needle 500 inserting into the needle groove 401.

[0027] As a specific implementation of the first driving member 42, please refer to Figure 5 The first driving member 42 includes a first motor 421, a lead screw 422 and a slider 423; the first motor 421 is fixedly connected to the frame 10 and electrically connected to the controller 20; the lead screw 422 is rotatably connected to the frame 10 along the stretching direction, and is connected to the output end of the first motor 421; the slider 423 is sleeved on the lead screw 422 and threadedly matched with the lead screw 422, and the slider 423 is slidably connected to the frame 10 along the axial direction of the lead screw 422; wherein the slide seat 41 is fixedly connected to the slider 423.

[0028] The first motor 421 can specifically be a servo motor or a stepper motor, which drives the lead screw 422 to rotate through the first motor 421, and then utilizes the threaded matching relationship between the lead screw 422 and the slider 423 to drive the slider 423 to slide on the frame 10, so that the slide 41 connected to the slider 423 moves toward the first position or the second position along the stretching direction. The motor is combined with the threaded transmission method to ensure the position accuracy of the slider 423 driven by the first motor 421. Since the accuracy of the velvet roller 400 reaching the second position is directly related to the alignment accuracy of the picking needle 500 and the needle groove 401, the above-mentioned driving method can improve the operating stability of the cotton picking mechanism 50, and avoid the needle collision phenomenon caused by the needle 500 being unable to align with the needle groove 401.

[0029] The specific structure of the second driving member 43 is as follows: Figure 3 As shown, it includes a second motor 431 electrically connected to the controller 20, two synchronous wheels 432 respectively sleeved on the output end of the second motor 431 and the roller shaft of the velvet roller 400; the two synchronous wheels 432 are connected by a synchronous belt 433. Here, the second motor 431 can be a synchronous motor or a servo motor. The second motor 431 drives the velvet roller 400 to rotate through the synchronous belt 433, so as to achieve stable transmission and precise control, which is conducive to improving the control accuracy of the rotation angle of the velvet roller 400, ensuring that the needle groove 401 can align with the pick needle 500 to avoid the needle collision phenomenon.

[0030] For some possible implementations, see Figure 3 and Figure 4 The cotton picking mechanism 50 includes a fixed frame 51, a needle seat 52 and a third driving member 53; wherein the fixed frame 51 is fixedly connected to the frame 10 and is located on the side of the velvet roller 400; the needle seat 52 is slidably connected to the fixed frame 51 along the axial direction of the velvet roller 400 and is provided with a picking needle 500; the third driving member 53 is provided on the fixed frame 51 and is electrically connected to the controller 20, and the output end of the third driving member 53 is connected to the needle seat 52, for driving the needle seat 52 to move so that the picking needle 500 penetrates into or withdraws from the needle groove 401.

[0031] Here, the third driving member 53 can be a telescopic cylinder or an electric push rod. The third driving member 53 drives the needle seat 52 to move so that the picking needle 500 connected to the needle seat 52 penetrates into the needle groove 401. After the picking needle 500 picks off the cotton fiber, the third driving member 53 drives the needle seat 52 to move in the opposite direction so that the picking needle 500 is pulled out of the needle groove 401, thereby preventing the picking needle 500 from affecting the smoothness of peeling the cotton fiber from the velvet roller 400.

[0032] Specifically, the third driving member 53 of this embodiment is as follows: Figure 4 In the structure shown, the third driving member 53 includes a third motor 531 and a rack 533; wherein the third motor 531 is fixedly connected to the fixing frame 51 and a gear 532 is sleeved on the output end; the rack 533 is fixedly connected to the needle seat 52 and meshed with the gear 532. Since the positional accuracy of the axial movement of the picking needle 500 is low, the third motor 531 can be a conventional motor, and of course a servo motor or a stepping motor can also be used. The third motor 531 drives the gear 532 to rotate, so that the gear 532 rolls and drives the rack 533 to produce axial movement, and then the needle seat 52 connected to the rack 533 drives the picking needle 500 to move, and the structure is simple and compact, and the movement is stable.

[0033] In order to prevent the portion of the needle 500 away from the needle seat 52 from bending, falling or shaking, please refer to Figure 4 The fixing frame 51 or the frame 10 is provided with a guide pin hole 511 suitable for the pick pin 500 to pass through. The guide pin hole 511 is provided to radially constrain the pick pin 500 to ensure the straightness of the pick pin 500 and prevent the pick pin 500 from shaking, thereby improving the stability of the pick pin 500 entering the needle groove 401 and preventing the needle from hitting and causing machine downtime to affect the sample preparation efficiency.

[0034] As a specific implementation of the above-mentioned circulating cotton guiding mechanism 60, please refer to Figure 2 , Figure 6 and Figure 7The circulating cotton guiding mechanism 60 includes a first conveyor belt 61 and a second conveyor belt 62 which run synchronously in opposite directions, and a cotton guiding channel suitable for clamping and conveying cotton fibers is formed between the first conveyor belt 61 and the second conveyor belt 62; one end of the cotton guiding channel is close to the velvet roller 400 to form a feed port 601, and the feed port 601 is used to introduce the cotton fibers cut on the velvet roller 400 into the cotton guiding channel, and the other end of the cotton guiding channel is close to the feed end of the drafting mechanism 30 to form a discharge port 602, and the discharge port 602 is used to feed the cotton fibers into the drafting mechanism 30.

[0035] The belt surfaces of the first conveyor belt 61 and the second conveyor belt 62 are pressed against each other and run synchronously in opposite directions, thereby forming a cotton guiding channel that can clamp and transport cotton fibers. After the picking needle 500 picks the cotton fibers, the broken parts of the cotton fibers fall into the feed port 601 of the cotton guiding channel, and then the clamping and transporting traction force of the cotton fibers in the cotton guiding channel causes the cotton fibers to be completely peeled off from the rotating velvet roller 400, and the cotton guiding channel with a clamping effect can transport the cotton fibers along a curved path, so that the cotton fibers go around the drafting mechanism 30 from the feed port 601 and then return to the feed end of the drafting mechanism 30, and the stripping and transfer of the cotton fibers can be achieved without manual operation, thereby saving manpower and improving sample preparation efficiency.

[0036] It should be noted that the above-mentioned first conveyor belt 61 has a first clamping surface 611 facing the second conveyor belt 62, and the second conveyor belt 62 has a second clamping surface 621 facing the first conveyor belt 61, and a cotton guiding channel is formed between the second clamping surface 621 and the first clamping surface 611; the first conveyor belt 61 also has a feeding conveying surface 612, one end of the feeding conveying surface 612 is connected to the discharge port 602, and the other end is connected to the feeding end of the drafting mechanism 30, which is used for feeding the cotton fibers discharged from the discharge port 602 into the drafting mechanism 30.

[0037] In order to improve the sample preparation efficiency, the stripping and transfer speed of the cotton fibers can be accelerated as much as possible. Therefore, the first conveyor belt 61 and the second conveyor belt 62 are suitable for adopting a faster running speed. Therefore, the speed at which the cotton fibers are 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, blockage will occur. Therefore, part of the belt surface of the first conveyor belt 61 is used as the feeding conveying surface 612. After the cotton fibers are discharged from the discharge port 602, they fall on the feeding conveying surface 612. Due to the lack of pressure on the feeding conveying surface 612, the cotton fibers can slip relative to the feeding conveying surface 612, thereby changing the drafting mechanism 30 from passive forced feeding to active feeding, thereby avoiding the blockage problem of the feeding end of the drafting mechanism 30 caused by forced feeding, and improving the fluency of the sample preparation process.

[0038] For details, please refer to Figure 2 , Figure 6 and Figure 7The first conveyor belt 61 sequentially surrounds a plurality of first rollers 613 to form a first clamping surface 611, a feeding and conveying surface 612, and forms an escape space suitable for accommodating the drafting mechanism 30; the second conveyor belt 62 sequentially surrounds a plurality of second rollers 622 and a plurality of first rollers 613 to form a second clamping surface 621; the frame 10 is provided with a fourth driving member 614 and a fifth driving member 623 which are electrically connected to the controller 20 respectively, the output end of the fourth driving member 614 is transmission-connected to one of the first rollers 613, and the output end of the fifth driving member 623 is transmission-connected to one of the second rollers 622.

[0039] A plurality of first rollers 613 are shared between the first clamping surface 611 of the first conveyor belt 61 and the second clamping surface 621 of the second conveyor belt 62, thereby forming a state in which the first clamping surface 611 and the second clamping surface 621 are pressed against each other to clamp and convey the cotton fibers. At the same time, in order to ensure the compactness of the overall structure, the first rollers 613 are used to guide the path of the first conveyor belt 61 to form an avoidance space, thereby forming a structure in which the first conveyor belt 61 is arranged around the stretching mechanism 30 to reduce space occupancy. On this basis, in order to meet the requirements of synchronous operation of the first conveyor belt 61 and the second conveyor belt 62, each of them is provided with its own independent drive, that is, one of the first rollers 613 is driven to rotate by the fourth drive member 614, and one of the second rollers 622 is driven to rotate by the fifth drive member 623, thereby ensuring the stability of the cotton fiber clamping and conveying.

[0040] It should be noted that the wrap angle between the first roller 613 connected to the output end of the fourth driving member 614 and the first conveyor belt 61 is not less than ninety degrees, and the wrap angle between the second roller 622 connected to the output end of the fifth driving member 623 and the second conveyor belt 62 is not less than ninety degrees, thereby ensuring that the entire first conveyor belt 61 can be driven to run stably by driving a first roller 613, and the entire second conveyor belt 62 can be driven to run stably by driving a second roller 622, thereby improving the compactness of the transmission structure.

[0041] For details, see Figure 6, each first roller 613 is roller one 6131, roller two 6132, roller three 6133, roller four 6134, roller five 6135, roller six 6136, and roller seven 6137; the belt surface of the first conveyor belt 61 passes around roller one 6131, roller four 6134, roller seven 6137, roller two 6132, roller six 6136, roller five 6135, and roller three 6133 in turn and returns to roller one 6131 to form a closed loop, wherein the belt surface of the first conveyor belt 61 located between roller three 6133 and roller five 6135, between roller five 6135 and roller six 6136, and between roller six 6136 and roller two 6132 forms a first clamping surface 611, and the belt surface located between roller three 6133 and roller one 6131 forms a feeding and conveying surface 612.

[0042] See also Figure 7 The second rollers 622 are roller eight 6221, roller nine 6222, roller ten 6223, roller eleven 6224, and roller twelve 6225. The second conveyor belt 62 is guided by roller three 6133, roller five 6135, and roller six 6136 of the first conveyor belt 61, thereby forming a second conveyor belt that sequentially passes by roller eight 6221, roller three 6133, roller five 6135, and roller six 6136. 136. Roller nine 6222, roller ten 6223, roller eleven 6224, and roller twelve 6225 return to the closed loop of roller eight 6221; the second conveyor belt 62 is located between roller eight 6221 and roller three 6133, between roller three 6133 and roller five 6135, between roller five 6135 and roller six 6136, and between roller six 6136 and roller nine 6222, and the belt surfaces form a second clamping surface 621.

[0043] A feed port 601 is formed between roller two 6132 and roller nine 6222, a discharge port 602 is formed between roller eight 6221 and roller three 6133, and roller one 6131 is located at the feed end of the stretching mechanism 30 for feeding; the fourth driving member 614 is transmission connected to roller four 6134, and the fifth driving member 623 is transmission connected to roller ten 6223.

[0044] The working process of the cotton short fiber rate detection sample making machine provided in this embodiment is as follows: The cotton sample for sample preparation is placed on the conveying and feeding surface, and the cotton sample enters the drafting mechanism 30 and is drafted by the drafting roller to form a bundle of cotton fibers, which are wound on the velvet roller 400 in the first position. After all the cotton fibers are wound, the first driving member 42 drives the velvet roller 400 to move to the second position, and after the sensing end detected by 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 groove 401 is aligned with the picking needle 500, and the third driving member 53 drives the needle seat 52 to move so that the picking needle 500 penetrates the needle groove 401, and then the first driving member 42 drives the velvet roller 400 to move to the first position, so that the picking needle 500 picks the cotton fibers, and then the first driving member 42 drives the velvet roller 400 to move to the first position, so that the picking needle 500 cuts the cotton fibers. The movable member 42 drives the velvet roller 400 to return to the second position again, so that the broken end of the cotton fiber enters the feed port 601 of the circulating cotton guiding mechanism 60, and then the first conveyor belt 61 and the second conveyor belt 62 are used to clamp and convey the cotton fiber to generate traction force, so that the velvet roller 400 rotates one circle to pull and peel off the cotton fiber, and then the cotton fiber passes through the cotton guiding channel to reach the feeding conveying surface 612, and in this process, the first driving member 42 drives the velvet roller 400 to return to the first position again to prepare to rewind the cotton fiber that has been stretched for the next time, and the cotton fiber on the feeding conveying surface 612 begins to be fed into the stretching mechanism 30 for the next stretching, and this cycle is repeated six times to obtain the final cotton fiber sample for short fiber rate detection.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cotton short fiber rate detection and sampling machine, characterized in that: It includes a frame, a controller, and a drafting mechanism, a cotton rolling mechanism, a cotton picking mechanism, and a circulating cotton guiding mechanism which are arranged on the frame and controlled by the controller; The cotton winding mechanism is located at the discharge side of the drafting mechanism and has a velvet roller for winding cotton fibers, and the peripheral wall of the velvet roller has a needle groove penetrating along the axial direction thereof; The cotton picking mechanism is located on the side of the velvet roller and is provided with a picking needle suitable for penetrating into the needle groove, and the picking needle is used to pick and cut the cotton fibers wound on the velvet roller; One end of the circulating cotton guiding mechanism is close to the velvet roller, and the other end extends from below the drafting mechanism to the feeding end of the drafting mechanism, so as to peel the cotton fibers from the velvet roller and re-feed them into the drafting mechanism.

2. The cotton short fiber rate detection sample making machine according to claim 1, characterized in that: The cotton rolling mechanism comprises: A slide seat is slidably connected to the frame along the drafting direction of the cotton fibers by the drafting mechanism, and the velvet roller is rotatably connected to the slide seat; A first driving member, disposed on the frame and electrically connected to the controller, wherein an output end of the first driving member is transmission-connected to the slide seat, and is used to drive the slide seat to drive the velvet roller to move to the first position or the second position; A second driving member is disposed on the slide and electrically connected to the controller, and an output end of the second driving member is drivingly connected to the velvet roller for driving the velvet roller to rotate; Among them, the first position is close to the discharge end of the drafting mechanism, which is used for the velvet roller to wind and collect the cotton fibers discharged from the drafting mechanism; the second position is close to the feed end of the circulating cotton guiding mechanism, which is used for the picking needle to be aligned and inserted into the needle groove, and the cotton fibers cut by the picking needle to enter the circulating cotton guiding mechanism.

3. The cotton short fiber rate detection sample making machine according to claim 2, characterized in that: A detection sensor is provided on the slide seat, and the detection sensor is electrically connected to the controller. A detection hole is eccentrically provided on the end face of the velvet roller. When the velvet roller is in the second position and rotates until the needle groove is aligned with the needle picking axis, the 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 receiving the detection signal.

4. The cotton short fiber rate detection sample making machine according to claim 2, characterized in that: The first driving member comprises: A first motor, fixedly connected to the frame and electrically connected to the controller; A lead screw, rotatably connected to the frame along the stretching direction, and connected to an output end of the first motor; A slider, sleeved on the lead screw and matched with the lead screw thread, the slider is slidably connected to the frame along the axial direction of the lead screw; Wherein, the sliding seat is fixedly connected to the sliding block.

5. The cotton short fiber rate detection sample making machine according to claim 2, characterized in that: The cotton picking mechanism comprises: A fixed frame, fixedly connected to the frame and located on the side of the velvet roller; A needle seat, slidably connected to the fixing frame along the axial direction of the velvet roller and provided with the picking needle; A third driving member is disposed on the fixing frame and is electrically connected to the controller. An output end of the third driving member is connected to the needle seat to drive the needle seat to move so that the picking needle can penetrate into or be withdrawn from the needle slot.

6. The cotton short fiber rate detection sample making machine according to claim 5, characterized in that: The third driving member comprises: A third motor, fixedly connected to the fixing frame and having an output end sleeved with a gear; The rack is fixedly connected to the needle seat and meshed with the gear.

7. The cotton short fiber rate detection sample making machine according to claim 5, characterized in that: The fixing frame or the frame is provided with a guide needle hole suitable for the picking needle to pass through.

8. The cotton short fiber rate detection sample making machine according to any one of claims 1 to 7, characterized in that: The circulating cotton guiding mechanism includes a first conveyor belt and a second conveyor belt running synchronously in opposite directions, and 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 velvet roller to form a feed port, and the feed port is used to introduce the cotton fibers cut off from the velvet roller into the cotton guiding channel, and the other end of the cotton guiding channel is close to the feed end of the drafting mechanism to form a discharge port, and the discharge port is used to feed the cotton fibers into the drafting mechanism.

9. The cotton short fiber rate detection sample making machine according to claim 8, 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, and 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 the feeding conveying surface is connected to the discharge port, and the other end is connected to the feeding end of the drafting mechanism, and is used for feeding the cotton fibers discharged from the discharge port into the drafting mechanism.

10. The cotton short fiber rate detection sample making machine according to claim 9, characterized in that: The first conveyor belt sequentially surrounds a plurality of first rollers to form the first clamping surface, the feeding and conveying surface, and forms an escape space suitable for accommodating the drafting mechanism; the second conveyor belt sequentially surrounds a plurality of second rollers and a plurality of the first rollers to form the second clamping surface; The frame is provided with a fourth driving member and a fifth driving member which are electrically connected to the controller respectively, the output end of the fourth driving member is drivingly connected to one of the first rollers, and the output end of the fifth driving member is drivingly connected to one of the second rollers.

Images