Cotton catching machinery
A) Classification of cotton grabbing machines:
① According to the cotton grabbing method:
a) Top grabbing type: The beater grabs the cotton block from the top of the cotton bale. All domestic machines belong to this type.
b) Bottom gripping type: The cotton bale is placed on top, and the gripping device grabs the cotton block from the bottom of the cotton bale.
②According to the operating mode of the cotton catching car:
a) Circular type: for circular leisure, such as FA002.
b) Reciprocating straight-line type: reciprocating straight-line leisure, such as FA006, FA009, A1/2, etc.
1. Mechanism and function of cotton picking machine
(1) FA002 series and FA003 disc type cotton picking machine
Can sort cotton, cotton-type chemical fiber, medium-length chemical fiber (below 76mm) . It is mainly composed of cotton catching trolley 4, cotton conveying pipeline 5, ground rail 1, interior wall panels 8, exterior wall panels 3, etc.
1. Cotton catching trolley: It consists of beater 2 (composed of zigzag blade, partition plate, beater shaft, end plate, etc.) and rib 9. It is connected by brackets and operates along the ground rail. It runs clockwise, and its operation is controlled by the next completed power tube. The cotton grabbing trolley drops 3 to 6 mm every one week of operation. When the cotton grabbing trolley is running, the ribs are pressed tightly on the cotton bales. The tooth tips of the cotton grabbing beaters extend out of the ribs to grab the cotton pieces one by one, relying on the cotton condenser or fan on the lower machine. The generated air flow is sent to the next machine through the cotton pipeline. When the beater encounters a traffic jam while running around the flower, the speed relay (centrifugal switch) mounted on the frame sends a signal, and the beater and trolley motors immediately stop and will be restarted after the operator troubleshoots the problem. The centrifugal switch is driven by a beater belt pulley. When the beater rotates, drag the centrifugal switch. If the beater slows down for some reason during operation (such as the beater winding around the flowers and is stuck in traffic), the centrifugal switch contacts will separate, the driving motor will stop rotating, the beater will be positioned, and the raw material cannot be grasped; if the beater speed picks up, the centrifugal switch will The switch is closed, the traveling motor is started, and the thug resumes grabbing raw materials.
2. Cotton catching beater: It consists of beater shaft, spacer plate (31 pieces in total), zigzag blade, end plate, etc.
The number of blade teeth on each partition is divided into three groups from the inside to the outside:
The inner group (1~12 pieces): each piece has 9 teeth;
The middle group (13~20 pieces) ): Each piece has 12 teeth;
The outer group (21~31 pieces): Each piece has 15 teeth.
The purpose of the dense arrangement of blade teeth: to reduce the opening difference between the inner and outer cotton blocks when picking cotton, thereby improving the uniformity of opening.
３. The handpiece frame is supported by four screw rods. The two outer screw rods are fixed on the handpiece frame and the nuts rotate. The two inner screw rods rotate and the nuts are fixed. On the phone stand. When the nuts in the two outer screw rods and the two inner screw rods rotate synchronously, the beater is driven to lift and relax. The cotton catching trolley rotates once and the beater descends once. The extreme position of the trolley lifting is controlled by the limit travel switch.
４. Wall panels: The outer wall panels are fixed on the ground and have an entry door, mainly to prevent the raw materials from scattering and collapsing; the inner wall panels rotate together with the cotton catching car.
5. FA002 model can be used in parallel with two units. Its purpose:
It can increase the number of mixed cotton bales, so that various components can be evenly mixed, which helps to improve the mixing quality; it can make the weight of cotton pieces output by the bale grabber small and uniform. The FA003 model inherits the advantages of the FA002 model and increases the number of packages, which is beneficial to further improving the mixing effect.
(2) FA006 and FA009 series reciprocated plucker
1. Composition: Mainly composed of cotton grabber 2, straight trolley 8 and turret 7. Working characteristics:
The cotton grabber moves back and forth along two ground rails 13 for leisure.
The cotton catching beater 3 can catch cotton when the straight trolley is making a round trip and two-way trip, and it can also catch cotton when the straight trolley is making a one-way trip. When the trolley reaches one end and adjusts its direction, the cotton grabber will drop by one cotton picking depth, and the amount of drop can be adjusted from 2 to 10mm.
Cotton bales can be laid on both sides of the ground rail. The cotton bales on each side can be divided into four groups, with an interval of about 1 meter between groups. While one side is catching cotton, cotton bales can be placed on the other side. If the turret is rotated 180° relative to the trolley, cotton production can be continued on the new side.
The fixed conveying pipe 11 is located between the two ground rails and is made of steel plates. In order to meet the needs of the trolley transporting cotton, the upper part of the rectangular pipe is opened and covered with a flat belt. One end of the covering belt 10 is fixed, and the other end is connected to the winding wheel of the trolley. The belt moves in and out as the trolley moves, so that the length of the conveying pipe changes with the movement of the trolley. And when the height difference of the newly laid cotton bales does not exceed 300mm, the cotton grabbing machine can automatically level them.
The output of FA006 series is above 1200kg/h, which can be automatically adjusted according to the blowroom cotton production line. Each side can be divided into 2 to 4 groups to arrange cotton bales of different raw materials. Automatic grouping and grabbing during work, FA006C model can realize a cotton picking machineAt the same time, we supply two blowroom cotton production lines. When cotton bales of different heights need to be produced at the same time, they can be arranged in groups and automatically leveled by the cotton picking machine when picking up (that is, for taller cotton bales, increase the picking depth of the picking roller within a certain number of times until it is Reach the normal cotton bale height), and finally catch the cotton bale at the same time. However, the flat bale process is an unstable period for the cotton blending quality of the reciprocating cotton picking machine. Because during the flat wrapping process, a certain component is over-captured or a certain component is vacant at the same time, the openness of the cotton bundle is also unstable.
The captured cotton bundles pass through the cotton conveying pipe and are sent to the front machine by the air flow generated by the front cotton condenser or cotton conveying fan.
The number of stacked packages is more than FA002, more Features of the mark and multi-bale row reciprocating cotton picking machine:
It has column performance and can mix multiple bales of cotton.
The speed of the cotton picker is high (up to 1250rpm), and the weight of the picked cotton pieces is small, which lays the foundation for detailed mixing, impurity removal and uniformity.
It is easy to change varieties.
High output and high degree of automation.
Composition of the cotton grabber: There are two cotton grabbers 3 inside the cotton grabber 2 (each cotton grabber is equipped with several toothed cutterheads), two sets of ribs 4 and three cotton pressing rollers 5. The two cotton-grabbing beaters turn in opposite directions, and the inclination of the disc teeth is also opposite. Therefore, when grabbing cotton, the front beater grabs cotton in the forward direction, and the rear beater grabs cotton in the reverse direction.
The double-hand structure has more grabbing points than the single-hand structure, and the grabbing cotton is smaller. However, the double beaters are fixed and installed in parallel, so that when the cotton grabbing head moves back and forth to grab cotton, on the same cotton grabbing working surface, the front beater grabs cotton in the forward direction, and the rear beater grabs cotton in the reverse direction. The cotton layer at the front beater is tighter. , the cotton layer at the rear beater is loose due to the grabbing and opening of the front beater, and there are raised cotton bundles, so the rear beater is easier to grasp the cotton than the front beater. If the distance between the two blades and the cotton grabbing working surface is the same, the cotton pieces grabbed by the front beater will be slightly smaller, and the cotton pieces grabbed by the rear beater will be slightly larger. In order to improve the fine cotton picking performance of the cotton picking machine, an upside-down device for the reciprocating cotton picking machine was successfully developed.
This device makes the front beater blade close to the cotton grabbing working surface, and the rear beater automatically rises, slightly further away from the cotton picking working surface than the front beater. When the cotton grabbing head changes direction, the cotton grabbing head drops a certain distance, and the double beaters simultaneously Swing, the rear beater approaches the cotton grabbing working surface and becomes a front beater, and the front beater moves away from the cotton picking working surface and becomes a rear beater, thereby maintaining the cotton grabbing performance of the front beater and weakening the cotton grabbing ability of the rear beater, making the two The cotton pieces captured by the beater are even and consistent.
The function of the ribs: cooperate with the cotton pressing roller to press the cotton pile to prevent it from being grabbed in pieces.
The ribs are installed under the beater, and the distance the blade head rises from the ribs is adjustable. The two sets of ribs are staggered and pressed on the surface of the cotton pile. When the ribs and the pressing roller are pressing the cotton pile, the beater blades successively grab the raw cotton on the surface of the cotton pile and open it into smaller cotton pieces.
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