Cotton picking head, cotton picker and cotton picking method

Abstract

The invention relates to the technical field of cotton picking, and discloses a cotton picking head which comprises a rack, at least one movement mechanism, two oppositely-arranged cotton picking mechanisms and a blowing mechanism, the movement mechanism is connected with the rack, and the movement mechanism is provided with a movement end capable of moving relative to the rack; the two cotton picking mechanisms are arranged at the moving end of the moving mechanism and the rack respectively, or the two cotton picking mechanisms are both arranged at the moving end of the moving mechanism, and each cotton picking mechanism comprises a plurality of squeezing parts arranged at intervals; the blowing mechanism is connected with the rack and provided with blowing holes. Cotton flaps and cotton hulls are separated in an extrusion and airflow matching mode, and the principle is essentially different from the principle that cotton is hooked and pulled through hook teeth. The extrusion part does not rotate, cotton is picked in an extrusion and airflow matching mode, and the situation that cotton fibers are shortened due to the fact that cotton petals are pulled through hook teeth is avoided; neps are prevented from being increased due to rotation action; the adhesion of impurities and cotton fibers caused by rotating hook teeth is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cotton picking, and in particular to a cotton picking head, a cotton picking machine and a cotton picking method. Background Art

[0002] The cotton picking head is a device used to separate the cotton husk from the cotton petals.

[0003] The current cotton picking heads include horizontal spindle pickers and brush roller pickers. The horizontal spindle pickers hook the cotton with rotating spindles and then pull it out from the cotton plants. The brush roller pickers use a pair of counter-rotating flexible picking rollers that are tilted 30 degrees horizontally to knock the cotton off the plants through high-frequency flexible impact. However, the mixture picked by this device still needs to be cleaned with the hook teeth on the cleaning roller. In essence, the hook tooth grabbing step is postponed.

[0004] There are three unavoidable side effects of picking cotton with hook teeth: 1. The number of short fibers and ropes increases. When the hook teeth pull the cotton petals, only the fibers hooked by the hook teeth are stressed, which can easily tear the cotton petals apart or break them, forming short fibers and ropes; 2. The number of cotton neps increases, especially for horizontal spindle pickers. The high-speed rotating fine picking will twist the cotton fibers and increase the number of cotton neps, whether in the cotton picking or cotton withdrawal process. 3. There are many impurities kneaded into the fiber web. The hook teeth penetrate into the fiber web, bringing the impurities into the rotational motion for further kneading and twisting, making the impurities and cotton fibers adhere more firmly. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies, and to provide a cotton picking head, a cotton picking machine and a cotton picking method, so as to solve the technical problem that hook teeth are needed to pick cotton in the prior art.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a cotton picking head, comprising: frame; at least one motion mechanism, the motion mechanism being connected to the frame and having a motion end capable of moving relative to the frame; Two cotton picking mechanisms are arranged opposite to each other, the two cotton picking mechanisms are arranged at the moving end of the moving mechanism and the frame respectively, or the two cotton picking mechanisms are arranged at the moving end of the moving mechanism, the cotton picking mechanism comprises a plurality of squeeze parts arranged at intervals, and the squeeze parts of the two cotton picking mechanisms can be driven by the moving end of the moving mechanism to move closer to or farther from each other; The blowing mechanism is connected to the frame and has a blowing hole, wherein the air outlet direction of the blowing hole is toward the extrusion part.

[0007] In one embodiment, the pressing portion is elastic and can bend elastically after abutting against an object.

[0008] In one embodiment, the pressing portion is inclined toward the top of the frame.

[0009] In one embodiment, during the movement of the moving end of the moving mechanism, there are movement components along the horizontal direction and the vertical direction.

[0010] In one of the embodiments, the blowing mechanism further comprises an air inlet passage connected to the blowing hole; and the frame is provided with a cotton outlet relative to the blowing hole.

[0011] In one embodiment, the cotton picking head also includes a valve, which is arranged in the air inlet duct and is used to control the opening and closing of the air inlet duct. There is a linkage between the valve and the motion mechanism. When the moving ends of the two motion mechanisms drive the extrusion parts in the two cotton picking mechanisms to approach each other, the valve is driven to gradually decrease through the linkage until the flow channel is closed; when the moving ends of the two motion mechanisms drive the extrusion parts in the two cotton picking mechanisms to move away from each other, the valve is opened through the linkage and the opening of the valve is gradually increased to the maximum.

[0012] In one embodiment, the valve comprises a rotating shaft, a valve plate, a crank and a connecting rod, the rotating shaft is rotatably connected to the air inlet, the valve is connected to the rotating shaft and is built into the air inlet, the valve plate and the air inlet are combined to form a flow channel for air flow; one end of the crank is connected to the rotating shaft, and one end of the connecting rod is rotatably connected to the other end of the crank; The motion mechanism is connected to the crank; When the two motion mechanisms drive the two cotton picking mechanisms to approach each other, the motion mechanisms drive the valve plate to gradually decrease through the connecting rod and the crank until the flow channel is closed; when the two motion mechanisms drive the two cotton picking mechanisms to move away from each other, the motion mechanisms drive the valve to open through the connecting rod and the crank and the flow channel controls the flow area of ​​the flow channel to gradually increase to the maximum.

[0013] In one embodiment, the frame is formed with a passage for the cotton plants to pass through; The two cotton picking mechanisms are arranged on both sides of the passage; The cotton picking head also includes any one of a first brush plate, a brush roller and a soft plate roller arranged on both sides of the entrance of the channel, and also includes a second brush plate arranged on both sides of the exit of the channel.

[0014] In one embodiment, the extrusion portion is cylindrical, the diameter of the extrusion portion is 3-10 mm, the length of the extrusion portion is 20-100 mm, and the distance between adjacent extrusion portions is 8-20 mm.

[0015] In one embodiment, there are two motion mechanisms, both of which are connected to the frame, and the two motion mechanisms have two motion ends that can approach and move away from each other; the motion mechanism includes a support part, a transmission member and a driving member, the driving member is fixed to the frame and connected to the support part via the transmission member, and is used to drive the two support parts of the two motion mechanisms to reciprocate towards and away from each other via the transmission member; the two cotton picking mechanisms are respectively arranged at the motion ends of the two motion mechanisms.

[0016] In a second aspect, the present invention further provides a cotton machine, comprising the above-mentioned cotton picking head.

[0017] In a third aspect, the present invention further provides a cotton picking method, using the above-mentioned cotton picking head, comprising the following steps: The motion mechanism drives the two cotton picking mechanisms to move back and forth, and the squeezing parts on the two cotton picking mechanisms beat the cotton bolls, so that the cotton shells and cotton petals of the cotton bolls are separated; The air blowing mechanism blows out an air flow, and the air flow takes away the cotton petals separated from the cotton shell.

[0018] Compared with the prior art, the cotton picking head, cotton picking machine and cotton picking method provided by the present invention, when the cotton picking head is used for cotton picking, the motion mechanism drives the two cotton picking mechanisms to approach each other, and the squeezing parts on the two cotton picking mechanisms approach each other. At first, the space between the squeezing parts on both sides is relatively large, and the cotton branches and cotton bolls are relatively free. At this time, the effect of the squeezing parts on the cotton branches and cotton bolls is mainly beating and vibrating. When the squeezing parts on both sides press the cotton branches and cotton bolls to a certain extent, the squeezing parts have a punching effect on the cotton petals. When the squeezing parts on both sides completely press the cotton stalks and cotton bolls, those squeezing parts that make invalid impacts have a retaining effect on the cotton bolls. Under the squeezing of multiple squeezing parts, the cotton shell and the cotton petals in the cotton bolls are separated, which is essentially different from the principle of hooking cotton with hook teeth.

[0019] The extrusion part does not rotate, and uses extrusion to separate the cotton petals from the cotton shell, avoiding the use of hooks to pull the cotton petals, which will shorten the cotton fibers; avoid using rotation to increase the number of cotton knots; avoid using rotating hooks to cause impurities to stick to the cotton fibers. The original state and quality of the cotton petals are maintained as much as possible, and impurities are avoided from being rubbed into the cotton fiber net, reducing the generation of regenerative impurities that are difficult to clean.

[0020] By setting up an air blowing mechanism, the air blowing mechanism blows out air flow toward the extrusion part through the air blowing hole, and the air flow has the following effects: first, the air flow can directly blow away the mature cotton petals that have been loosened or fallen off; second, the air flow can cooperate with the cotton picking mechanism, and after the extrusion part squeezes the cotton petals to separate them from the cotton shells, the air flow can blow away the cotton petals in time to avoid the cotton petals from being subjected to multiple squeezing and impacts; third, the air flow can blow the separated cotton petals toward a preset location for easy collection to avoid the cotton petals falling to the ground without being collected.

[0021] The low-amplitude and high-frequency impact of the extrusion part and the pulse airflow impact blown by the blowing mechanism are coordinated to achieve gradient picking, which not only ensures the quality of cotton, but also guarantees the clean picking rate and reduces power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a cotton picking head provided by an embodiment of the present invention; Figure 2 is a schematic structural diagram of a cotton picking head provided by an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a movement mechanism, a cotton picking mechanism and a valve in a cotton picking head provided by an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a movement mechanism, a cotton picking mechanism and a valve in a cotton picking head provided by an embodiment of the present invention.

[0023] Description of reference numerals: Frame 1; cotton outlet 11; first brush plate 12; second brush plate 13; Movement mechanism 2; support part 21; transmission member 22; fixed rod 221; second connecting rod 222; fixed shaft 223; second rotating shaft 224; second crank 225; third connecting rod 226; driving member 23; Cotton picking mechanism 3; squeezing part 31; Blowing mechanism 4; blowing hole 41; air inlet 42; Valve 5; first rotating shaft 51; valve plate 52; first crank 53; first connecting rod 54. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of 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.

[0025] In order to solve the technical problem in the prior art that a cotton picking head needs to use hook teeth to pick cotton, the present invention provides a cotton picking head, a picking machine and a cotton picking method, which do not need to use hook teeth to pick cotton.

[0026] It should be noted that the cotton picking head described in the present invention is used for but not limited to cotton picking, etc. For the convenience of explanation, in the present invention, only the application of the cotton picking head to cotton picking is taken as an example for explanation, and the principle of applying the cotton picking head to other types of equipment is essentially the same as the principle applied to cotton picking, which will not be elaborated here.

[0027] See also Figure 2 , Figure 2 It is a structural schematic diagram of a cotton picking head in one embodiment of the present invention, a cotton picking head includes a frame 1, at least one moving mechanism 2, two relatively arranged cotton picking mechanisms 3 and a blowing mechanism 4, the moving mechanism 2 is connected to the frame 1, and the moving mechanism 2 has a moving end that can move relative to the frame; the two cotton picking mechanisms 3 are respectively arranged at the moving end of the moving mechanism 2 and the frame 1, or the two cotton picking mechanisms 3 are arranged at the moving end of the moving mechanism 2; the cotton picking mechanism 3 includes a plurality of spaced-apart squeezing parts 31, the squeezing parts 31 of the two cotton picking mechanisms 3 can approach or move away from each other under the drive of the moving end of the moving mechanism 2, the blowing mechanism 4 is connected to the frame 1, and has a blowing hole 41, and the air outlet direction of the blowing hole 41 is toward the squeezing part 31.

[0028] Specifically, when cotton is picked with a cotton picking head, the motion mechanism 2 drives the two cotton picking mechanisms 3 to approach each other, and the squeezing parts 31 on the two cotton picking mechanisms 3 approach each other. Initially, the space between the squeezing parts 31 on both sides is relatively large, and the cotton branches and cotton bolls are relatively free. At this time, the squeezing parts 31 act mainly on the cotton branches and cotton bolls by beating and vibrating. When the squeezing parts 31 on both sides press the cotton branches and cotton bolls to a certain extent, the squeezing parts 31 play a punching role on the cotton petals. When the squeezing parts 31 on both sides completely press the cotton stalks and cotton bolls, those squeezing parts 31 that perform ineffective impacts play a role in securing the cotton bolls. The cotton husk and the cotton petals in the cotton bolls are separated by squeezing and airflow, which is essentially different from the principle of using hook teeth to pull cotton.

[0029] The squeezing part 31 does not rotate, and uses squeezing and airflow to separate the cotton petals from the cotton shell, avoiding the use of hooks to pull the cotton petals, which may shorten the cotton fibers; avoiding the use of rotating motion to increase the number of cotton knots; avoiding the use of rotating hooks to cause the impurities to adhere to the cotton fibers. The original state and quality of the cotton petals are maintained as much as possible, and the impurities are avoided from being kneaded into the cotton fiber net, reducing the generation of regenerative impurities that are difficult to clean.

[0030] By setting up the blowing mechanism 4, the blowing mechanism 4 blows out airflow toward the squeezing part 31 through the blowing hole 41, and the airflow has the following effects: first, the airflow can directly blow away the mature cotton petals that have been loosened or fallen off; second, the airflow can cooperate with the cotton picking mechanism 3, and after the squeezing part 31 squeezes the cotton petals to separate from the cotton shell, the airflow can blow away the cotton petals in time to avoid the cotton petals from being subjected to multiple squeezing and impacts; third, the airflow can blow the separated cotton petals toward a preset location for easy collection to avoid the cotton petals falling to the ground without being collected.

[0031] The low-amplitude and high-frequency impact of the squeezing part 31 and the pulsed airflow impact blown out by the blowing mechanism 4 are coordinated to achieve gradient picking, which can ensure the quality of cotton, the clean picking rate and reduce power consumption.

[0032] It should be understood that the number of the blowing holes 41 can be single or multiple. When the number of the blowing holes 41 is single, it can be set to be a long strip, a rectangle, a circle, etc. When the number of the blowing holes 41 is multiple, the multiple blowing holes 41 can be distributed in a matrix or arranged in other forms.

[0033] It should be understood that when there is one motion mechanism 2, the two cotton picking mechanisms 3 are respectively arranged at the motion ends of the motion mechanism 2 and the frame 1; when there are two motion mechanisms 2, the two cotton picking mechanisms 3 are respectively arranged at the motion ends of the two motion mechanisms 2. The motion mechanism 2 can also be set to have two motion ends, such as a hydraulic cylinder, a pneumatic cylinder and an electric push rod with two output shafts that can approach and move away from each other, and the two cotton picking mechanisms 3 are arranged at the two motion ends of the motion mechanism 2. The two motion ends of a single motion mechanism 2 can also drive the two cotton picking mechanisms 3 to approach and move away from each other.

[0034] It should be understood that the extrusion portion 31 can be a rigid structure or a flexible and elastic structure. If a rigid extrusion portion 31 is used, the rigid extrusion portion 31 may puncture the cotton shell, resulting in some cotton petals being unable to be separated from the cotton shell. For this reason, in one of the embodiments, the extrusion portion 31 is elastic and can bend elastically after abutting against an object.

[0035] In this embodiment, the squeezing part 31 does not adopt point-to-point visual picking, but can only perform blind punching. Blind punching means that most of the squeezing parts 31 cannot directly contact the cotton bolls, and make invalid impacts. Some squeezing parts 31 directly impact the cotton bolls, which are effective impacts. In this application, the invalid impacts are utilized. When a cotton picking head is used for cotton picking, the motion mechanism 2 drives the two cotton picking mechanisms 3 to approach and move away, forming a reciprocating motion, and the cotton bolls are impacted by the reciprocating motion of the cotton picking mechanisms 3. During the impact process, in the front section of each impact stroke, the space between the squeezing parts 31 on both sides is large, and the cotton branches and cotton bolls are relatively free. At this time, the effect of the squeezing part 31 on the cotton branches and cotton bolls is mainly flapping vibration. The reciprocating motion of the squeezing part 31 cooperates with the invalid impact to produce a flapping vibration effect, and with the cooperation of the airflow, some cotton petals that are not firmly connected to the cotton shell are separated in time. At the end of each stroke, the squeezing part 31 that performs ineffective impact fixes the cotton stalk and the cotton shell, and the squeezing part 31 continues to be compressed and deformed, so that the squeezing part 31 that performs effective impact has the function of further pressing and smoothing the cotton boll. The local creeping deformation of the squeezing part 31 after being pressed is transformed into a separation action of relative displacement of the cotton petals and the cotton shell, that is, the squeezing part 31 that performs ineffective impact is equivalent to a person using one hand to stabilize the cotton shell, and the squeezing part 31 that performs effective impact is equivalent to a person using the other hand to smooth and pull off the cotton petals. Multiple squeezing parts 31 cooperate to achieve the effect of imitating hand picking. In addition, the structure in which the reciprocating action and the squeezing part 31 are arranged at intervals can minimize the negative effects of ineffective impact, avoid breaking the cotton branches to produce large-sized impurities, avoid breaking the cotton stalks and cotton shells to cause green juice to contaminate the cotton, and avoid producing whiskers and broken leaves, etc., which is essentially different from the principle of using hook teeth to pull cotton.

[0036] In this embodiment, compared with the rigid extrusion part 31, the elastic extrusion part 31 in this embodiment has unexpected technical effects.

[0037] The material of the extrusion portion 31 may be polyurethane, rubber, silicone, latex, etc., or other similar engineering plastics with flexibility and elasticity.

[0038] During the growth of cotton bolls on cotton plants, the split opening of the cotton bolls is generally facing upwards. In order to facilitate the separation of the cotton petals from the cotton shell, specifically, Figure 3 and Figure 4 As shown, in one embodiment, the pressing portion 31 is inclined toward the top of the frame 1 .

[0039] In this embodiment, the squeezing part 31 is tilted toward the top of the frame 1, firstly to facilitate the passage of cotton, and secondly, when picking cotton, after the squeezing parts 31 on both sides abut against the cotton petals, as the squeezing parts 31 on both sides continue to approach, the squeezing parts 31 on both sides continue to have a combined force to pull upward slightly, so as to facilitate the separation of the cotton petals from the cotton shell as soon as possible.

[0040] Among them, the extrusion part 31 is inclined toward the top of the frame 1, which means that the extrusion part 31 gradually inclines toward the top of the frame 1 in the direction away from the moving end, and along the direction away from the moving end, the distance between the extrusion part 31 and the moving end of the moving mechanism 2 gradually increases.

[0041] It should be understood that when the motion mechanism 2 drives the two cotton picking mechanisms 3 to move, the motion mechanism 2 can drive the cotton picking mechanisms 3 to move horizontally or diagonally. Figure 3 and Figure 4 As shown, in one of the embodiments, during the movement of the moving end of the moving mechanism 2, there are movement components in the horizontal direction and the vertical direction.

[0042] In this embodiment, when the motion mechanism 2 drives the cotton picking mechanism 3 to move, the cotton picking mechanism 3 has motion components in the horizontal direction and the vertical direction. The motion component in the horizontal direction enables the cotton picking mechanism 3 to move closer to or away from each other; and the motion component in the vertical direction can drive the squeezing part 31 to move upward, so that the squeezing parts 31 on both sides have a small upward pulling action by combined force, which facilitates the separation of the cotton petals from the cotton shell as soon as possible.

[0043] In order to collect the cotton petals after picking, Figure 1 and Figure 2 As shown, in one embodiment, the blowing mechanism 4 further comprises an air inlet 42 connected with the blowing hole 41 ; and the frame 1 is provided with a cotton outlet 11 relative to the blowing hole 41 .

[0044] During the process of collecting cotton petals, air is blown into the air inlet 42, and the air enters the blowing hole 41 through the air inlet 42, and is blown toward the cotton plants from the blowing hole 41 to form an airflow. The airflow can carry the loosened cotton petals away from the cotton plants, thereby separating the cotton petals from the cotton plants. The separated cotton petals are discharged through the cotton outlet 11 under the blowing of the airflow, and the discharged cotton petals are collected by other equipment.

[0045] It should be understood that the blowing hole 41 can be oriented toward any position of the extrusion portion 31, such as Figure 2 As shown, specifically, in one embodiment, the blowing hole 41 is disposed below the extrusion portion 31 .

[0046] It should be understood that in order to reduce the waste of airflow, Figure 3 and Figure 4As shown, in one of the embodiments, the cotton picking head also includes a valve 5, which is arranged in the air inlet 42 and is used to control the opening and closing of the air inlet 42. There is a linkage between the valve 5 and the motion mechanism 2. When the moving ends of the two motion mechanisms 2 drive the extrusion parts 31 in the two cotton picking mechanisms 3 to approach each other, the valve 5 is driven to gradually decrease and close the flow channel through the linkage; when the moving ends of the two motion mechanisms 2 drive the extrusion parts 31 in the two cotton picking mechanisms 3 to move away from each other, the valve 5 is opened through the linkage and the opening of the valve 5 is gradually increased to the maximum.

[0047] By setting the valve 5, the valve 5 can close and open the flow channel. When the cotton petal and the cotton shell need to be separated, the valve 5 is opened. When the cotton petal and the cotton shell do not need to be separated, the valve 5 is closed to reduce the waste of airflow. However, it is still necessary to control when to open and close the valve 5. For this reason, in this embodiment, on the basis of setting the valve 5, the valve 5 is further linked with the motion mechanism 2. When the moving ends of the two motion mechanisms 2 drive the squeezing parts 31 in the two cotton picking mechanisms 3 to approach each other, the squeezing parts 31 do not contact the cotton bolls, and the cotton petals and the cotton shells are not separated. In this process, there is no need to form an airflow through the blowing mechanism. Therefore, the valve 5 is driven to gradually reduce and close the flow channel through linkage to reduce the waste of airflow. When the moving ends of the two motion mechanisms 2 drive the squeezing parts 31 in the two cotton picking mechanisms 3 to move away from each other, the squeezing parts 31 have completed squeezing, and the separation of the cotton petal and the cotton shell is realized. At this time, the valve 5 is opened through linkage and the opening of the valve 5 is gradually increased to the maximum, so that airflow is formed in the frame 1, and the cotton petal and the cotton shell are driven to separate through the airflow.

[0048] It should be understood that the valve 5 can be a mechanical valve or an electronic valve, and the valve 5 and the motion mechanism 2 can be linked through a mechanical structure or through circuit and program control. Specifically, Figure 3 and Figure 4 As shown, in one embodiment, the valve 5 includes a first rotating shaft 51, a valve plate 52, a first crank 53 and a first connecting rod 54, the first rotating shaft 51 is rotatably connected to the air inlet 42, the valve 5 is connected to the first rotating shaft 51 and is built into the air inlet 42, and the valve plate 52 and the air inlet 42 are combined to form a flow channel for air to pass through; one end of the first crank 53 is connected to the first rotating shaft 51, and one end of the first connecting rod 54 is rotatably connected to the other end of the first crank 53; the motion mechanism 2 is connected to the first crank 53; when the two motion mechanisms 2 drive the two cotton picking mechanisms 3 to approach each other, the motion mechanism 2 drives the valve plate 52 to gradually reduce and close the flow channel through the first connecting rod 54 and the first crank 53; when the two motion mechanisms 2 drive the two cotton picking mechanisms 3 to move away from each other, the motion mechanism 2 drives the valve 5 to open through the first connecting rod 54 and the first crank 53 and the flow area of ​​the flow channel control flow channel gradually increases to the maximum.

[0049] In order to realize the linkage between the motion mechanism 2 and the valve 5, in this embodiment, by providing a first crank 53 and a first connecting rod 54, the mechanical structure composed of the first crank 53 and the first connecting rod 54 realizes the linkage between the motion mechanism 2 and the valve 5. When the two motion mechanisms 2 drive the two cotton picking mechanisms 3 to approach each other, the motion mechanism 2 drives the valve plate 52 to gradually reduce the flow channel through the first connecting rod 54 and the first crank 53 until the flow channel is closed; when the two motion mechanisms 2 drive the two cotton picking mechanisms 3 to move away from each other, the motion mechanism 2 drives the valve 5 to open through the first connecting rod 54 and the first crank 53 and the flow area of ​​the flow channel control flow channel gradually increases to the maximum.

[0050] It should be understood that the motion mechanism 2 can be a linear reciprocating drive mechanism, such as a screw, a linear cylinder, an electric push rod, etc. The motion mechanism 2 can also be a reciprocating drive mechanism with an arc-shaped motion trajectory, and the motion mechanism 2 can also be a point-type motion mechanism 2, etc. Specifically, Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment, there are two motion mechanisms 2, both of which are connected to the frame 1, and the two motion mechanisms 2 have two motion ends that can approach and move away from each other; the motion mechanism 2 includes a support portion 21, a transmission member 22 and a driving member 23, the driving member 23 is fixed to the frame 1, and is connected to the support portion 21 via the transmission member 22, and is used to drive the two support portions 21 in the two motion mechanisms 2 to reciprocate towards and away from each other via the transmission member 22; two cotton picking mechanisms 3 are respectively arranged on the support portions 21 of the two motion mechanisms 2.

[0051] In this embodiment, by providing a support part 21, a transmission part 22 and a driving part 23, the driving part 23 can drive the two cotton picking mechanisms 3 to move back and forth through the transmission part 22 and the support part 21, so that the squeezing part 31 on the cotton picking mechanism 3 can reciprocate toward the cotton plant in the form of pulses, constantly simulating the process of human hands pulling the cotton petals in small amplitudes, avoiding pulling the cotton in large amplitudes, maximizing the fiber length of the cotton packaging, and avoiding the cotton petals from being stretched or scattered.

[0052] The support part 21 may be a plate, block, or bracket that can support the extrusion part 31; the transmission part 22 may be a connecting rod crank mechanism, a cam mechanism, a gear rack mechanism, a reciprocating oil cylinder, a cylinder, or other mechanisms that can realize the reciprocating motion or swinging motion of the extrusion part 31; the driving part 23 may be a driving motor, a hydraulic motor, or the like. Specifically, Figure 3 and Figure 4As shown, in one embodiment, the transmission member 22 includes two fixed rods 221, two second connecting rods 222, two fixed shafts 223, a second rotating shaft 224, a second crank 225, and a third connecting rod 226. The two fixed rods 221 are arranged at intervals, and one end is connected to the frame 1. One end of the two third connecting rods 226 is hinged to the other end of the two fixed rods 221 respectively. The two fixed shafts 223 are arranged at intervals, and both are connected to the support part 21. The fixed shaft 223 is rotatably connected to the other end of the third connecting rod 226. One end of the second rotating shaft 224 is connected to the output shaft of the driving member 23. One end of the second crank 225 is connected to the other end of the second rotating shaft 224. One end of the third connecting rod 226 is hinged to the other end of the second crank 225 and the other end of the first connecting rod 54. The other end of the third connecting rod 226 is hinged to the middle part of the second connecting rod 222.

[0053] When it is necessary to drive the extrusion part 31 to move, the driving member 23 is started, and the driving member 23 drives the second rotating shaft 224 to rotate, the second rotating shaft 224 drives the second crank 225 to rotate, and the second crank 225 drives the third connecting rod 226 to move, and the third connecting rod 226 drives the first rotating shaft 51 and the valve plate 52 to rotate via the first connecting rod 54 and the first crank 53, and the third connecting rod 226 drives the support part 21 to move via the second connecting rod 222 and the two fixed shafts 223. Since the two fixed shafts 223 are connected to the two fixed rods 221 via the two second connecting rods 222, the angle between the support part 21 and the horizontal plane remains unchanged during the movement, and the support part 21 rotates around the hinge point at one end of the second connecting rod 222, so that the support part 21 drives the extrusion part 31 to have movement components along the horizontal direction and the vertical direction.

[0054] It should be understood that the frame 1 can be a frame of any shape and structure, and the frame 1 can be formed by splicing plates and profiles. Figure 1 As shown, in one of the embodiments, the frame 1 is an internally hollow shell, and the frame 1 forms a channel for cotton plants to pass through, and the channel is connected to the interior of the frame 1; two cotton picking mechanisms 3 are arranged on both sides of the channel; the cotton picking head also includes a first brush plate 12, any one of a brush roller and a soft plate roller arranged on both sides of the entrance of the channel, and also includes a second brush plate 13 arranged on both sides of the outlet of the channel.

[0055] By setting up a channel, the channel can allow cotton plants to pass through the frame 1 and allow the cotton plants to pass between the two cotton picking mechanisms 3; by setting up any one of the first brush plate 12, the brush roller and the soft plate roller on both sides of the entrance of the channel, the cotton plants can be guided into the channel; by setting a brush plate at the outlet of the channel, the second brush plate 13 can effectively prevent the picked cotton from flowing out from the outlet, ensuring that the cotton is completely collected in the cotton picker.

[0056] It should be understood that the shape, size, and spacing between the extrusion parts 31 will affect the cotton picking effect. In order to achieve a better cotton picking effect, specifically, in one embodiment, Figure 3 and Figure 4 As shown, in one embodiment, the extrusion portion 31 is cylindrical, the diameter of the extrusion portion 31 is 3-10 mm, the length of the extrusion portion 31 is 20-100 mm, and the distance between adjacent extrusion portions 31 is 8-20 mm.

[0057] It should be understood that the extrusion portion 31 may also be in other shapes, such as a polygonal column, etc.; it should be understood that the above dimensions may be adjusted according to the differences in cotton varieties in different regions.

[0058] By setting the extrusion part 31 into a cylindrical shape, the sharp corners when the extrusion part 31 contacts the cotton shell and the cotton plant can be reduced, thereby reducing the damage to the cotton fibers caused by the sharp corners; by setting the diameter, length and distance between adjacent extrusion parts 31 of the extrusion part 31, the cotton picking effect of the extrusion part 31 can be ensured.

[0059] Specifically, in one embodiment, the diameter of the extrusion portion 31 is 4 mm, the length of the extrusion portion 31 is 45 mm, the distance between adjacent extrusion portions 31 is 9 mm, and the extrusion portion 31 is inclined upward by 30°.

[0060] In a second aspect, the present invention further provides a cotton machine, comprising the above-mentioned cotton picking head. Since the cotton machine adopts the cotton picking head in the above-mentioned embodiment, the technical effect of the cotton machine can refer to the above-mentioned embodiment.

[0061] In a third aspect, the present invention further provides a cotton picking method, using the above-mentioned cotton picking head, comprising the following steps: The motion mechanism 2 drives the two cotton picking mechanisms 3 to move back and forth, and the squeezing parts 31 on the two cotton picking mechanisms 3 beat the cotton bolls, so that the cotton shells and cotton petals of the cotton bolls are separated; The air blowing mechanism 4 blows out an air flow 41, and the air flow takes away the cotton petals separated from the cotton shell.

[0062] In one embodiment, the two motion mechanisms 2 drive the two cotton picking mechanisms 3 to approach each other, and the elastic squeezing parts 31 on the two cotton picking mechanisms 3 abut against and squeeze the cotton shells, and the squeezing parts 31 on both sides squeeze the cotton shells and separate the cotton petals; The blowing mechanism blows out an airflow, and the airflow carries away the cotton petals separated from the cotton shell; The two movement mechanisms 2 drive the two cotton picking mechanisms 3 away from each other.

[0063] The squeezing part 31 does not adopt point-to-point visual picking, but can only perform blind punching. Blind punching means that most of the squeezing parts 31 cannot directly contact the cotton bolls, and perform ineffective punching. Some squeezing parts 31 directly punch the cotton bolls, which are effective punching. In the present application, the ineffective punching is utilized. When a cotton picking head is used for cotton picking, the two motion mechanisms 2 drive the two cotton picking mechanisms 3 to approach and move away, forming a reciprocating motion, and the cotton bolls are punched by the reciprocating motion of the cotton picking mechanisms 3. During the punching process, in the front section of each punching stroke, the space between the squeezing parts 31 on both sides is relatively large, and the cotton branches and cotton bolls are relatively free. At this time, the effect of the squeezing part 31 on the cotton branches and cotton bolls is mainly flapping vibration. The reciprocating motion of the squeezing part 31 cooperates with the ineffective punching to produce a flapping vibration effect, and with the cooperation of the airflow, some cotton petals that are not firmly connected to the cotton shell are separated in time; in each At the end of the stroke, the squeezing part 31 that performs ineffective impact fixes the cotton stalk and the cotton shell, and the squeezing part 31 continues to be compressed and deformed, so that the squeezing part 31 that performs effective impact can further press and smooth the cotton boll, and transform the local creeping deformation of the squeezing part 31 after being pressed into a separation action of relative displacement of the cotton petals and the cotton shell, that is, the squeezing part 31 that performs ineffective impact is equivalent to a person using one hand to stabilize the cotton shell, and the squeezing part 31 that performs effective impact is equivalent to a person using the other hand to smooth and pull off the cotton petals. Multiple squeezing parts 31 cooperate to achieve the effect of imitating hand picking. In addition, the structure in which the reciprocating action and the squeezing part 31 are arranged at intervals can minimize the negative effects of the ineffective impact, avoid breaking the cotton branches to produce large-sized impurities, avoid breaking the cotton stalks and cotton shells to cause green juice to contaminate the cotton, and avoid producing whiskers and excessive broken leaves, which is essentially different from the principle of using hook teeth to pull cotton.

[0064] The squeezing part 31 does not rotate, and uses squeezing and airflow to pick cotton, avoiding using hook teeth to pull the cotton petals, which will shorten the cotton fibers; avoiding using rotating movements to increase the number of cotton knots; avoiding using rotating hook teeth to cause impurities to adhere to the cotton fibers. The original state and quality of the cotton petals are maintained as much as possible, and impurities are avoided from being rubbed into the cotton fiber net, reducing the generation of regenerative impurities that are difficult to clean.

[0065] By setting up the blowing mechanism 4, the blowing mechanism 4 blows out airflow toward the squeezing part 31 through the blowing hole 41, and the airflow has the following effects: first, the airflow can directly blow away the mature cotton petals that have been loosened or fallen off; second, the airflow can cooperate with the cotton picking mechanism 3, and after the squeezing part 31 squeezes the cotton petals to separate from the cotton shell, the airflow can blow away the cotton petals in time to avoid the cotton petals from being subjected to multiple squeezing and impacts; third, the airflow can blow the separated cotton petals toward a preset location for easy collection to avoid the cotton petals falling to the ground without being collected.

[0066] The low-amplitude and high-frequency impact of the squeezing part 31 and the pulsed airflow impact blown out by the blowing mechanism 4 are coordinated to achieve gradient picking, which can ensure the quality of cotton, the clean picking rate and reduce power consumption.

[0067] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 invention.

[0068] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0069] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

[0070] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0071] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cotton picking head, characterized in that: include: frame; at least one motion mechanism, the motion mechanism being connected to the frame and having a motion end capable of moving relative to the frame; Two cotton picking mechanisms are arranged opposite to each other, the two cotton picking mechanisms are arranged at the moving end of the moving mechanism and the frame respectively, or the two cotton picking mechanisms are arranged at the moving end of the moving mechanism, the cotton picking mechanism comprises a plurality of squeeze parts arranged at intervals, and the squeeze parts of the two cotton picking mechanisms can be driven by the moving end of the moving mechanism to move closer to or farther from each other; The blowing mechanism is connected to the frame and has a blowing hole, wherein the air outlet direction of the blowing hole is toward the extrusion part.

2. The cotton picking head according to claim 1, characterized in that: The pressing portion is elastic and can be elastically bent after abutting against an object.

3. The cotton picking head according to claim 2, characterized in that: The pressing portion is arranged to be inclined toward the top of the frame.

4. The cotton picking head according to claim 2, characterized in that: During the movement of the moving end of the moving mechanism, there are movement components along the horizontal direction and the vertical direction.

5. The cotton picking head according to claim 1, characterized in that: The blowing mechanism also has an air inlet channel connected to the blowing hole; The frame is provided with a cotton outlet relative to the air blowing hole.

6. The cotton picking head according to claim 5, characterized in that: It also includes a valve, which is arranged in the air inlet duct and is used to control the opening and closing of the air inlet duct. There is a linkage between the valve and the motion mechanism. When the moving ends of the two motion mechanisms drive the squeezing parts in the two cotton picking mechanisms to approach each other, the valve is driven to gradually decrease through the linkage until the flow channel is closed; when the moving ends of the two motion mechanisms drive the squeezing parts in the two cotton picking mechanisms to move away from each other, the valve is opened through the linkage and the opening of the valve is gradually increased to the maximum.

7. The cotton picking head according to claim 6, characterized in that: The valve comprises a rotating shaft, a valve plate, a crank and a connecting rod, wherein the rotating shaft is rotatably connected to the air inlet, the valve is connected to the rotating shaft and is built into the air inlet, and the valve plate and the air inlet are combined to form a flow channel for air flow to pass through; one end of the crank is connected to the rotating shaft, and one end of the connecting rod is rotatably connected to the other end of the crank; The motion mechanism is connected to the crank; When the two motion mechanisms drive the two cotton picking mechanisms to approach each other, the motion mechanisms drive the valve plate to gradually decrease through the connecting rod and the crank until the flow channel is closed; when the two motion mechanisms drive the two cotton picking mechanisms to move away from each other, the motion mechanisms drive the valve to open through the connecting rod and the crank and the flow channel controls the flow area of ​​the flow channel to gradually increase to the maximum.

8. The cotton picking head according to claim 1, characterized in that: The frame is formed with a passage for the cotton plants to pass through; The two cotton picking mechanisms are arranged on both sides of the passage; The cotton picking head also includes any one of a first brush plate, a brush roller and a soft plate roller arranged on both sides of the entrance of the channel, and also includes a second brush plate arranged on both sides of the exit of the channel.

9. The cotton picking head according to claim 1, characterized in that: The extrusion part is cylindrical, the diameter of the extrusion part is 3-10 mm, the length of the extrusion part is 20-100 mm, and the distance between adjacent extrusion parts is 8-20 mm.

10. The cotton picking head according to claim 1, characterized in that: There are two motion mechanisms, both of which are connected to the frame, and the two motion mechanisms have two motion ends that can move closer to and farther from each other; the motion mechanism includes a support part, a transmission member and a driving member, the driving member is fixed to the frame and connected to the support part via the transmission member, and is used to drive the two support parts of the two motion mechanisms to move closer to and farther from each other via the transmission member; The two cotton picking mechanisms are respectively arranged at the moving ends of the two moving mechanisms.

11. A cotton machine, characterized in that: The cotton picking head comprises the cotton picking head according to any one of claims 1 to 10.

12. A cotton picking method, characterized in that: Using the cotton picking head as described in any one of claims 1 to 10 comprises the following steps: The motion mechanism drives the two cotton picking mechanisms to move back and forth, and the squeezing parts on the two cotton picking mechanisms beat the cotton bolls, so that the cotton shells and cotton petals of the cotton bolls are separated; The air blowing mechanism blows out an air flow, and the air flow takes away the cotton petals separated from the cotton shell.

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