Cotton blending machine

Abstract

The utility model relates to a cotton blending machine which comprises a cotton blending box body, the inlet end of the cotton blending box body communicates with a weighing bin used for discharging and sensing a certain weight to achieve feeding, a discharging pipe is arranged above the weighing bin in the vertical direction, and a feeding pipe is arranged on the discharging pipe in the horizontal direction; a weighing bin is arranged in the cotton mixing box, a conveying assembly for conveying cotton materials into the cotton mixing box is arranged in the weighing bin, a first roller set for grabbing the cotton materials and conducting preliminary mixing is arranged in the cotton mixing box, a second roller set for conducting secondary mixing on the cotton materials is arranged in the cotton mixing box, and an adjusting mechanism for adjusting the roller spacing in the first roller set and the roller spacing in the second roller set is arranged on the cotton mixing box. The cotton blending device has the effect that cotton blending is more sufficient.

Description

Technical Field

[0001] This application relates to the technical field of cotton mixing machines, and particularly to a cotton mixing machine. Background Art

[0002] The cotton mixing machine is one of the widely used machines in the textile industry. In order to produce finished products with different properties, raw materials with different properties are often mixed with each other. In terms of the mixing technology and method of different raw materials, the requirements for different products will also be different.

[0003] Chinese Patent with the publication number CN203546240U discloses a cotton mixing machine. By separately feeding cotton products with different densities into the cotton mixing bin and then using the wind force provided by the gas for full mixing, it achieves the beneficial effect of high input and high return while ensuring that cotton products with different densities can be evenly and stably mixed.

[0004] In view of the above related technologies, the cotton mixing machine mixes a large amount of cotton materials. The characteristics of different cotton materials, such as fiber length and fineness, are different. However, the rollers in the cotton mixing machine cannot be adjusted in position, which may cause some cotton materials to agglomerate, disperse, and be insufficiently and unevenly mixed, presenting deficiencies. Utility Model Content

[0005] In order to make the cotton mixing more sufficient and uniform to ensure the quality of cotton mixing, this application provides a cotton mixing machine.

[0006] The cotton mixing machine provided by this application adopts the following technical solutions:

[0007] A cotton mixing machine includes a cotton mixing box body. The inlet end of the cotton mixing box body is communicated with a weighing bin for feeding materials and sensing a certain weight to achieve feeding. A blanking pipe is vertically opened above the weighing bin. A feeding pipe is horizontally opened on the blanking pipe, and the feeding pipe is tangent to the blanking pipe. A transportation component for transporting cotton materials into the cotton mixing box body is arranged in the weighing bin. A first roller group for grasping cotton materials and performing preliminary mixing is arranged in the cotton mixing box body. A second roller group for re-mixing cotton materials is arranged in the cotton mixing box body. An adjusting mechanism for adjusting the roller distance in the first roller group and the roller distance in the second roller group is arranged on the cotton mixing box body.

[0008] By adopting the above technical solution, the cotton material enters and drops along the blanking pipe into the weighing bin, and is transported to the cotton mixing box by the transportation component. It is repeatedly mixed by the first roller group and the second roller group. During the mixing process, the roller distance is adjusted by the adjusting mechanism to meet the processing requirements of different raw materials, ensuring that the fibers can be fully mixed and processed, and guaranteeing the cotton mixing quality. In addition, the cotton material is input from the previous process into the feed pipe. The feed pipe is tangent to the blanking pipe to prevent a large amount of cotton material from directly hitting the blanking pipe when entering the feed pipe. It drops under the action of the gravity of the cotton material itself and the wind force of the cotton pumping machine in the previous process, preventing blockage.

[0009] Optionally, a weighing module is provided at the bottom of the weighing bin. The transportation component includes a first conveyor belt. The first conveyor belt is arranged along the length direction of the weighing bin. The first conveyor belt extends into the cotton mixing box. A shutter is provided near the connection between the cotton mixing box and the weighing bin. The shutter is rotatably connected to the weighing bin.

[0010] By adopting the above technical solution, when a certain weight of cotton material is sensed in the weighing bin, the shutter opens, and the first conveyor belt transports the cotton material into the cotton mixing box for cotton mixing. While cotton mixing is carried out in the cotton mixing box, blanking can be carried out in the weighing bin, improving the working efficiency of the cotton mixer.

[0011] Optionally, the first roller group includes an upper cotton grabbing roller and a lower cotton grabbing roller that are arranged at intervals up and down and rotate. The second roller group includes a first cotton grabbing roller, a second cotton grabbing roller, and a third cotton grabbing roller that are arranged along the top wall direction of the cotton mixing box. A driving component for driving each cotton grabbing roller to rotate is provided on the cotton mixing box.

[0012] By adopting the above technical solution, the cotton material that drops into the weighing bin passes through the first conveyor belt. When a certain amount of cotton material accumulates on the first conveyor belt, the weighing module senses a certain weight and opens the shutter. The cotton material is transported into the cotton mixing box by the first conveyor belt for cotton mixing, and then the weighing bin is refilled again, realizing simultaneous filling and stirring, thereby improving the cotton mixing efficiency. The cotton material flowing from the weighing bin will be grabbed and dispersed and mixed by the lower cotton grabbing roller. Subsequently, the cotton material moves from the upper cotton grabbing roller to the first cotton grabbing roller. During this period, part of the cotton material drops into the second conveyor belt through the gap between the upper cotton grabbing roller and the first cotton grabbing roller, and the remaining cotton material also drops into the second conveyor belt after being mixed by the second roller group. Subsequently, the dropped cotton material will be grabbed again by the lower cotton grabbing roller for repeated mixing, ensuring full and uniform mixing and guaranteeing the cotton mixing quality.

[0013] Optionally, an adjustment groove for the sliding movement of the upper cotton grabbing roller, the first cotton grabbing roller, and the second cotton grabbing roller is provided on the cotton mixing box body. The adjusting mechanism includes an adjusting screw rod, which is arranged on the cotton mixing box body along the direction of the adjustment groove, and the adjusting screw rod is rotationally matched with the cotton mixing box body. Sliding blocks are arranged at the ends of the upper cotton grabbing roller, the first cotton grabbing roller, and the second cotton grabbing roller, and the sliding blocks are threadedly connected to the adjusting screw rod. A guiding rod is inserted into the sliding block, and the guiding rod is fixedly arranged with the cotton mixing box body.

[0014] By adopting the above technical solution, by rotating the adjusting screw rod, since the screw rod is rotationally connected to the cotton mixing box body and the sliding block is threadedly connected to the adjusting screw rod, the movement of the sliding block in the direction of the adjusting screw rod can be realized, and the roller spacing can be adjusted, so that the subsequent cotton mixing is more sufficient and uniform, ensuring the cotton mixing quality. At the same time, adjusting the roller spacing can prevent the synchronous belt from loosening during long-term operation and achieve the effect of tensioning.

[0015] Optionally, the driving assembly includes a first driving motor, the output shaft of the first driving motor is connected to the rotating shaft of the upper cotton grabbing roller, a synchronous belt is sleeved on the rotating shafts of the upper cotton grabbing roller and the lower cotton grabbing roller together, a second driving motor is arranged in the cotton mixing box body, and the output shaft of the second driving motor is synchronously rotated with the first cotton grabbing roller and the second cotton grabbing roller through a synchronous belt, and the second cotton grabbing roller and the third cotton grabbing roller are synchronously rotated through a synchronous belt.

[0016] By adopting the above technical solution, the cotton grabbing roller and the driving motor are driven by a synchronous belt. During long-term operation, the synchronous belt may become loose, resulting in a reduction in transmission efficiency. The synchronous belt can be re-tensioned by adjusting the spacing of the cotton grabbing rollers. Secondly, by adjusting the spacing, different soft and hard cotton materials can be better mixed, improving the mixing effect; finally, when installing the cotton grabbing rollers, the spacing between two adjacent rollers may be too large or too small, resulting in poor cotton mixing effect. By adjusting the roller spacing, the spacing between the two rollers can be made more uniform, improving the cotton mixing effect.

[0017] Optionally, a second conveyor belt is arranged at the bottom of the cotton mixing box body along the length direction of the cotton mixing box body, and the height of the second conveyor belt is lower than that of the first conveyor belt.

[0018] By adopting the above technical solution, the cotton material conveyed from the weighing bin moves onto the second conveyor belt. By setting the second conveyor belt lower than the first conveyor belt, it is convenient for the cotton material to move. In addition, when the cotton material is mixed between the first roller group and the second roller group for the first time, the cotton material will fall onto the second conveyor belt and pass through the first roller group again for re-mixing, ultimately realizing repeated cotton mixing to improve the cotton mixing effect. In actual work, the staff can set the cotton mixing time to control the cotton mixing effect.

[0019] Optionally, the cotton grabbing rollers are evenly provided with cotton grabbing teeth, and the cotton grabbing teeth between the upper cotton grabbing roller and the lower cotton grabbing roller are staggered, the cotton grabbing teeth between the first cotton grabbing roller and the second cotton grabbing roller are staggered, the cotton grabbing teeth between the second cotton grabbing roller and the third cotton grabbing roller are staggered, the cotton grabbing teeth are trapezoidal, and the side of the cotton grabbing teeth away from the cotton grabbing roller is the narrow side.

[0020] By adopting the above technical solution, since the cotton grabbing rollers are staggered, during the cotton mixing process, the cotton material moves, disperses and mixes in the gaps between the cotton grabbing teeth. By adjusting the distance between the cotton grabbing rollers, the fiber composition of the final product is ensured to be uniform, and the product quality is improved.

[0021] Optionally, a maintenance opening is provided on the side wall of the weighing bin, and a maintenance bin door is hinged on the side wall of the maintenance opening.

[0022] By adopting the above technical solution, since the weighing bin and the cotton mixing box body are hermetically arranged, the setting of the maintenance opening enables the operator to conveniently enter the interior of the cotton mixing box for equipment maintenance, cleaning and inspection, ensuring the normal operation of the equipment and extending its service life.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By providing the adjusting screw, the moving block, the guiding rod and the adjusting groove, by rotating the adjusting screw rod, since the screw rod is rotatably connected to the cotton mixing box body, and the sliding block is threadedly connected to the adjusting screw rod, the movement of the sliding block in the direction of the adjusting screw rod can be realized, the roller spacing is adjusted, so that the subsequent cotton mixing is more sufficient and uniform, and the cotton mixing quality is guaranteed. At the same time, adjusting the roller spacing can prevent the synchronous belt from loosening due to long-term work, achieving the effect of tensioning;

[0025] 2. By providing the second conveyor belt, the first roller group and the second roller group, the cotton material moves to the end through the second conveyor belt, is grabbed by the first roller group for mixing, and moves to the second roller group, and then falls back onto the second conveyor belt under the action of gravity, shortening the cotton mixing time and improving the processing efficiency of the cotton mixer. The cotton mixing process is made more uniform and meticulous, further improving the cotton mixing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present application.

[0027] Figure 2 is a schematic structural diagram showing the first conveyor belt, the maintenance bin door and the baffle door in the weighing bin in the embodiment of the present application.

[0028] Figure 3 is a cross-sectional view of the feed pipe and the blanking pipe in the embodiment of the present application.

[0029] Figure 4It is a schematic diagram of the positional relationship between the second conveyor belt and the first conveyor belt in the embodiment of the present application.

[0030] Figure 5 It is an enlarged view of a part of the adjusting mechanism in the embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structures of the first roller group and the second roller group in the embodiment of the present application.

[0032] Figure 7 It is an enlarged view of the structure of the cotton grabbing teeth in the embodiment of the present application.

[0033] Explanation of reference numerals: 1, cotton mixing box body; 2, weighing bin; 3, blanking pipe; 4, feeding pipe; 5, sliding block; 6, adjusting screw; 7, guide rod; 8, maintenance bin door; 9, support frame; 10, weighing module; 11, first conveyor belt; 12, shutter; 13, cylinder; 14, second conveyor belt; 15, upper cotton grabbing roller; 16, lower cotton grabbing roller; 17, first driving motor; 18, synchronous belt; 19, first cotton grabbing roller; 20, second cotton grabbing roller; 21, third cotton grabbing roller; 22, second driving motor; 23, adjusting groove; 24, hydraulic cylinder; 25, cotton grabbing teeth; 26, cotton outlet; 27, cotton extraction fan. Detailed implementation manners

[0034] The following further elaborates on the present application Figures 1-6 in detail with reference to the accompanying

[0035] The embodiment of the present application discloses a cotton mixer. Referring to Figure 1 、 Figure 2 and Figure 3 , a cotton mixer includes a cotton mixing box body 1. The inlet end of the cotton mixing box body 1 is open and communicated with a weighing bin 2, and the weighing bin 2 is enclosed. A blanking pipe 3 is vertically opened at the top of the weighing bin 2, and the blanking pipe 3 is a circular pipe. A feeding pipe 4 is arranged tangentially to the top of the blanking pipe 3, and the feeding pipe 4 is horizontally arranged. In addition, in order to facilitate the operator to enter the interior of the cotton mixer, a maintenance opening (not shown in the figure) is opened on the side wall of the weighing bin 2, and a maintenance bin door 8 is connected to the side wall of the maintenance opening. One end of the maintenance bin door 8 is rotatably connected to the maintenance opening through a rotating shaft.

[0036] Referring to Figure 1 、 Figure 2 and Figure 4, a support frame 9 is provided at the bottom of the weighing bin 2, a weighing module 10 is provided at the bottom of the support frame 9, and the bottom of the weighing module 10 contacts the ground. A transport assembly for transporting cotton material into the cotton mixing box body 1 is provided in the weighing bin 2. The transport assembly includes a first conveyor belt 11. The first conveyor belt 11 is arranged along the length direction of the weighing bin 2. The first conveyor belt 11 communicates with the inside of the cotton mixing box body 1 and is driven by a motor. When the weighing bin 2 detects a certain weight of cotton material, the motor drives the first conveyor belt 11 to transport the cotton material into the cotton mixing box body 1.

[0037] Refer to Figure 1 and Figure 4 , a retaining door 12 is provided between the cotton mixing box body 1 and the weighing bin 2. The retaining door 12 is located above the first conveyor belt 11 and near the end of the first conveyor belt 11. The retaining door 12 is rotatably arranged on the weighing bin 2 through a rotating shaft. A cylinder 13 is fixedly arranged on the side wall of the weighing bin 2. The cylinder 13 is arranged obliquely. The tail of the cylinder 13 is hinged to the cotton mixing box body 1. One end of the piston rod of the cylinder 13 is higher than the tail of the cylinder 13. The piston rod of the cylinder 13 is hinged to the retaining door 12. When a certain amount of cotton material accumulates in the weighing bin 2, the first conveyor belt 11 operates, and the cylinder 13 pushes the retaining door 12 to open, so that the cotton material can be smoothly transported into the cotton mixing box body 1.

[0038] Refer to Figure 1 , Figure 4 and Figure 5 , a second conveyor belt 14 is arranged along the length direction at the bottom of the cotton mixing box body 1. The second conveyor belt 14 is arranged in parallel with the first conveyor belt 11. The height of the second conveyor belt 14 is lower than that of the first conveyor belt 11, and one end of the second conveyor belt 14 is staggered directly below the first conveyor belt 11.

[0039] Refer to Figure 1 , Figure 5 and Figure 6 , a first roller group for grasping the cotton material on the second conveyor belt and performing preliminary mixing is provided in the cotton mixing box body 1. The first roller group includes an upper cotton grabbing roller 15 and a lower cotton grabbing roller 16. The upper cotton grabbing roller 15 and the lower cotton grabbing roller 16 are arranged at an interval up and down. The lower cotton grabbing roller 16 is arranged at an interval from the second conveyor belt 14. The upper cotton grabbing roller 15 and the lower cotton grabbing roller 16 are arranged along the width direction of the cotton mixing box body 1 and are rotatably connected to the cotton mixing box body 1. A driving assembly for driving each cotton grabbing roller to rotate is fixedly arranged on the cotton mixing box body 1. The driving assembly includes a first driving motor 17. The first driving motor 17 drives the lower cotton grabbing roller 16 through a synchronous belt. A synchronous belt 18 is sleeved outside the rotating shafts of the lower cotton grabbing roller 16 and the upper cotton grabbing roller 15. An adjusting groove 23 for the upper cotton grabbing roller 15 to move is formed on the side wall of the cotton mixing box body 1. The upper cotton grabbing roller 15 is slidably matched with the adjusting groove 23.

[0040] Refer to Figure 1 , Figure 5 and Figure 6, the second roller group includes a first cotton grabbing roller 19, a second cotton grabbing roller 20 and a third cotton grabbing roller 21. The first cotton grabbing roller 19, the second cotton grabbing roller 20 and the third cotton grabbing roller 21 are arranged in sequence along the top wall direction of the cotton mixing box body 1. A second driving motor 22 is fixedly arranged on the outer side wall of the cotton mixing box body 1. The output shaft of the second driving motor 22 is synchronously rotated with the first cotton grabbing roller 19 and the second cotton grabbing roller 20 through a synchronous belt 18, and the second cotton grabbing roller 20 is synchronously rotated with the third cotton grabbing roller 21 through the synchronous belt 18. An adjusting groove 23 for the movement of the first cotton grabbing roller 19 and the second cotton grabbing roller 20 is formed on the cotton mixing box body 1, and the first cotton grabbing roller 19 and the second cotton grabbing roller 20 are in sliding fit with the adjusting groove 23.

[0041] Referring to Figure 1 , Figure 5 and Figure 6 , an adjusting mechanism for adjusting the positions of the upper cotton grabbing roller 15, the first cotton grabbing roller 19 and the second cotton grabbing roller 20 is arranged on the cotton mixing box body 1. The adjusting mechanism includes a sliding block 5. The sliding block 5 is arranged at both ends of the upper cotton grabbing roller 15, the first cotton grabbing roller 19 and the second cotton grabbing roller 20. An adjusting screw rod 6 and a guide rod 7 are arranged through the sliding block 5. The adjusting screw rod 6 and the guide rod 7 are oppositely arranged on the sliding block 5, and the adjusting screw rod 6 and the guide rod 7 are arranged along the direction of the adjusting groove 23 where each cotton grabbing roller is located. The adjusting screw rod 6 is in threaded fit with the sliding block 5, and the guide rod 7 is in sliding fit with the sliding block 5. The guide rod 7 is fixedly arranged on the outer side wall of the cotton mixing box body 1, and the adjusting screw rod 6 is rotatably arranged on the outer side wall of the cotton mixing box body 1.

[0042] Referring to Figure 4 , Figure 5 and Figure 6 , cotton grabbing teeth 25 are uniformly arranged on the cotton grabbing rollers. The cotton grabbing teeth 25 between the upper cotton grabbing roller 15 and the lower cotton grabbing roller 16 are arranged staggeredly, the cotton grabbing teeth 25 between the first cotton grabbing roller 19 and the second cotton grabbing roller 20 are arranged staggeredly, and the cotton grabbing teeth 25 between the second cotton grabbing roller 20 and the third cotton grabbing roller 21 are arranged staggeredly. The cotton grabbing teeth 25 are trapezoidal, and the side of the cotton grabbing teeth 25 far away from the cotton grabbing roller is the narrow side.

[0043] Referring to Figure 1 , a cotton outlet 26 is formed above the cotton mixing box body 1. After the cotton material is processed by the cotton mixing machine, the mixed cotton is pumped out of the cotton mixing box body 1 by a cotton pumping fan 27 arranged above the cotton mixing machine and conveyed to the next process equipment.

[0044] The implementation principle of a cotton mixing machine in an embodiment of the present application is as follows: When the cotton material enters the weighing bin 2 through the blanking pipe 3 and the feeding pipe 4 and reaches a certain weight, the weighing module 10 at the bottom of the weighing bin 2 will sense this change and activate the transportation component to send the cotton material into the cotton mixing box body 1. Inside the cotton mixing box body 1, the rotational movement of the cotton grabbing rollers evenly grabs and mixes the cotton material;

[0045] The cotton material is initially grabbed and mixed in the first roller group. The staggered arrangement of the upper cotton grabbing roller 15 and the lower cotton grabbing roller 16 enables the cotton material to be fully mixed between the two. Subsequently, the cotton material enters the second roller group, and through the further mixing by three side-by-side arranged cotton grabbing rollers, the uniformity of the cotton material is significantly improved. During the whole process, the cotton material will fall onto the second conveyor belt 14 from the gap between the first roller group and the second roller group and behind the second roller group, so as to carry out reciprocating cotton mixing and improve the cotton mixing efficiency;

[0046] During the cotton mixing process, since the cotton grabbing roller and the driving motor are driven by a synchronous belt 18, the synchronous belt 18 may become loose after long-term operation, resulting in a reduction in transmission efficiency. The tension of the synchronous belt 18 is re-tightened by rotating the adjusting screw 6 to adjust the spacing of the cotton grabbing roller. Secondly, by adjusting the spacing, cotton materials with different softness and hardness can be better mixed to improve the mixing effect. Finally, since when the cotton grabbing rollers are installed, the spacing between two adjacent rollers may be too large or too small, resulting in a poor mixing effect during cotton mixing. By adjusting the roller spacing, the spacing between the two rollers can be made more uniform, improving the cotton mixing effect and the versatility of the equipment.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cotton mixing machine, comprising a cotton mixing box body (1), characterized in that, The inlet end of the cotton mixing box body (1) is communicated with a weighing bin (2) for feeding materials and realizing feeding when a certain weight is sensed. A blanking pipe (3) is vertically opened above the weighing bin (2), and a feeding pipe (4) is horizontally opened on the blanking pipe (3), and the feeding pipe (4) is arranged tangentially to the blanking pipe (3). A transportation component for transporting cotton materials into the cotton mixing box body (1) is arranged in the weighing bin (2). A first roller group for grasping cotton materials and performing preliminary mixing is arranged in the cotton mixing box body (1). A second roller group for remixing cotton materials is arranged in the cotton mixing box body (1). An adjusting mechanism for adjusting the roller distance in the first roller group and the roller distance in the second roller group is arranged on the cotton mixing box body (1).

2. The cotton blender according to claim 1, characterized in that, A weighing module (10) is arranged at the bottom of the weighing bin (2). The transportation component includes a first conveyor belt (11). The first conveyor belt (11) is arranged along the length direction of the weighing bin (2). The first conveyor belt (11) extends into the cotton mixing box body (1). A retaining door (12) is arranged near the cotton mixing box body (1) and the weighing bin (2). The retaining door (12) is rotatably connected to the weighing bin (2).

3. The cotton blender according to claim 1, wherein The first roller group includes an upper cotton grabbing roller (15) and a lower cotton grabbing roller (16) which are arranged at intervals up and down and rotatably. The second roller group includes a first cotton grabbing roller (19), a second cotton grabbing roller (20) and a third cotton grabbing roller (21) which are arranged along the top wall direction of the cotton mixing box body (1). A driving component for driving each cotton grabbing roller to rotate is arranged on the cotton mixing box body (1).

4. A cotton blending machine according to claim 3, characterized in that, Adjusting grooves for sliding the upper cotton grabbing roller (15), the first cotton grabbing roller (19) and the second cotton grabbing roller (20) are opened on the cotton mixing box body. The adjusting mechanism includes an adjusting screw rod (6). The adjusting screw rod (6) is arranged on the cotton mixing box body (1) along the direction of the adjusting groove (23), and the adjusting screw rod (6) is rotationally matched with the cotton mixing box body (1). Sliding blocks (5) are arranged at the ends of the upper cotton grabbing roller (15), the first cotton grabbing roller (19) and the second cotton grabbing roller (20). The sliding blocks (5) are threadedly connected with the adjusting screw rod (6). A guiding rod (7) is arranged in the sliding block (5). The guiding rod (7) is fixedly arranged with the cotton mixing box body (1).

5. The mixing machine according to claim 4, characterized in that, The driving component includes a first driving motor (17). The output shaft of the first driving motor (17) is connected to the rotating shaft of the upper cotton grabbing roller (15). The rotating shafts of the upper cotton grabbing roller (15) and the lower cotton grabbing roller (16) are jointly sleeved with a synchronous belt (18). A second driving motor (22) is arranged in the cotton mixing box body (1). The output shaft of the second driving motor (22) is synchronously rotated with the first cotton grabbing roller (19) and the second cotton grabbing roller (20) through a synchronous belt (18). The second cotton grabbing roller (20) and the third cotton grabbing roller (21) are synchronously rotated through a synchronous belt (18).

6. The mixing cotton machine according to claim 2, characterized in that, A second conveyor belt (14) is arranged at the bottom of the blending box body (1) along the length direction of the blending box body (1), and the height of the second conveyor belt (14) is lower than that of the first conveyor belt (11).

7. A cotton blending machine according to claim 4, characterized in that, Cotton grabbing teeth (25) are evenly arranged on each cotton grabbing roller. The cotton grabbing teeth (25) between the upper cotton grabbing roller (15) and the lower cotton grabbing roller (16) are arranged staggeredly. The cotton grabbing teeth (25) between the first cotton grabbing roller (19) and the second cotton grabbing roller (20) are arranged staggeredly. The cotton grabbing teeth (25) between the second cotton grabbing roller (20) and the third cotton grabbing roller (21) are arranged staggeredly. The cotton grabbing teeth (25) are trapezoidal, and the side of the cotton grabbing teeth (25) away from the cotton grabbing roller is the narrow side.

8. A cotton blending machine according to claim 1, characterized in that, A maintenance opening is formed in the side wall of the weighing bin (2), and a maintenance bin door (8) is hinged to the side wall of the maintenance opening.

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