Cotton layer conveying mechanism and lint cleaning machine

Abstract

The present invention discloses a cotton layer conveying mechanism and a lint cleaning machine, wherein the cotton layer conveying mechanism comprises: two cotton stripping rollers, one of which is a front cotton stripping roller, and the other is a rear cotton stripping roller located at the rear side of the front cotton stripping roller and forming a cotton feeding gap with the front cotton stripping roller; two cotton feeding rollers located at a given distance below the two cotton stripping rollers, one of which is a front cotton feeding roller, and the other is a rear cotton feeding roller located at the rear side of the front cotton feeding roller and forming a cotton feeding gap with the front cotton feeding roller; a crossbeam located at the rear side of the space between the rear cotton stripping roller and the rear cotton feeding roller, and the end of the crossbeam is assembled with the side wall plate where the cotton box is located through an adjustable structure, and the position of the crossbeam can be adjusted; a scraper is installed on the crossbeam, and the upper part of the scraper is sealed and dynamically matched with the rear side of the rear cotton stripping roller, and the lower part of the scraper is sealed and dynamically matched with the rear side of the rear cotton feeding roller. Based on the present invention, the conveying is stable.

Description

Technical Field

[0001] The invention relates to a cotton layer conveying mechanism in a lint cleaning machine for conveying a cotton layer from a dust cage mesh surface to a licker-in roller, and also relates to a lint cleaning machine equipped with the cotton layer conveying mechanism. Background Art

[0002] Citations in order of publication:

[0003] The first patent document: Chinese patent document CN2793106Y, titled "Improved Lint Cleaning Machine", published on July 5, 2006;

[0004] The second patent document: Chinese patent document CN205258699U, named as needle-type lint cleaning machine, published on May 25, 2016;

[0005] The third patent document: Chinese patent document CN209906945U, named as a lint cleaning machine, published on 2020.01.07.

[0006] The first patent document is an earlier patent document on lint cleaning machines in China. Its background technology section gives a relatively clear description of the development history of lint cleaning machines in my country. Furthermore, in the lint cleaning machine further disclosed in the first patent document, the cotton layer adsorbed by the dust cage is peeled off by a pair of cotton stripping rollers located on the lower side of the dust cage, and then the peeled cotton layer is clamped by a pair of cotton feeding rollers located below the cotton stripping rollers and transported downward. The transportation and cleaning of lint will generate wind force. In order to ensure the smooth transportation of cotton batts, it is necessary to close the given area, such as the sealing provided by the sealing plate between the rear cotton stripping roller and the cotton feeding roller located on the rear side in the first patent document. The first patent document does not give specific instructions and markings, but it is well known in the art that the sealing plate mostly uses rigid plates. Since the roller and the sealing plate need to be in contact to form a good sealing effect, the contact will inevitably cause wear and lead to sealing failure. At the same time, since the sealing plate is fixed and cannot be adjusted, and the lint cleaning machine has a large machine width, the middle part of the sealing plate is prone to flexural deformation, the sealing effect is relatively poor, and it is not adjustable.

[0007] The second patent document and the third patent document have the same technology, and the cotton feeding roller is omitted in the structure, so there will be no problem of sealing between the cotton stripping roller and the cotton feeding roller on the back side. Omitting the cotton feeding roller will make the overall structure more compact, but in this field, the same roller will have different individual structures and geometric dimensions due to different usage environments. Referring to the first patent document, it can be clearly seen from its drawings that the diameter of the cotton stripping roller is larger than the diameter of the cotton feeding roller. Specifically, when the cotton batt is peeled off from the dust cage by the cotton stripping roller, the peeling performance is considered, and the roller diameter should not be too small. The cotton feeding roller clamps the peeled cotton batt downward to stabilize the falling direction of the cotton batt, so that the cotton batt can be fed to the licker-in roller more stably.

[0008] It is understandable that if only one pair of rollers is retained, the rollers are used as both stripping rollers and feeding rollers. Inevitably, they should have the diameter and geometric structure of the stripping rollers. The triangle area formed between the two rollers and the licker-in roller is relatively large, and the length of the cotton batt overhang is long, which is not conducive to maintaining the stability of cotton batt feeding, resulting in uneven thickness of the cotton layer on the licker-in roller, affecting the cleaning effect of the debris removal knife. In addition, the locally thicker cotton layer is inevitably closer to the debris removal knife, which may cause more cotton fibers to be discharged with the debris, which is the so-called white cotton discharge phenomenon. Summary of the invention

[0009] In view of this, an object of the present invention is to provide a cotton layer conveying mechanism with a relatively stable conveying state. The present invention also provides a lint cleaning machine.

[0010] In an embodiment of the present invention, a cotton layer conveying mechanism is provided, which is an assembly for conveying a cotton layer from a dust cage to a licker-in roller in a lint cleaning machine, and the cotton layer conveying mechanism comprises:

[0011] Two stripping rollers, one is a front stripping roller, and the other is a rear stripping roller located at the rear side of the front stripping roller and forming a cotton feeding gap between the front stripping roller;

[0012] Two cotton feeding rollers are located at a given distance below the two cotton stripping rollers, one of which is a front cotton feeding roller, and the other is a rear cotton feeding roller located at the rear side of the front cotton feeding roller and forming a cotton feeding gap between the front cotton feeding roller and the front cotton stripping roller;

[0013] The crossbeam is located at the rear side of the space between the rear cotton stripping roller and the rear cotton feeding roller, and the end of the crossbeam and the side wall panel where the cotton box is located are assembled through an adjustable structure, so that the position of the crossbeam can be adjusted;

[0014] The scraper is installed on the crossbeam, the upper part of the scraper is in sealed dynamic cooperation with the rear side of the rear cotton stripping roller, and the lower part of the scraper is in sealed dynamic cooperation with the rear side of the rear cotton feeding roller.

[0015] Optionally, the adjustable structure is constructed as follows:

[0016] One of the ends of the cross beam and the corresponding side wall plate is provided with an elongated hole, and the other is provided with a bolt hole;

[0017] The long holes and bolt holes are used to fit the bolts for assembly.

[0018] Optionally, the scraper includes:

[0019] Plate body, used for assembling the scraper on the beam;

[0020] The matching part is provided at each end of the plate body, and is a component or structural part for matching between the scraper and the rear cotton stripping roller or the rear cotton feeding roller.

[0021] Optionally, the plate body and the matching portion are constructed as one body, and the scraper is correspondingly an elastic sealing component or a polytetrafluoroethylene slide plate; or

[0022] The plate body is a rigid component, and the matching part is an elastic sealing component, which is fixed to the plate body by screws, rivets or bonding.

[0023] Optionally, the diameter of the stripping roller is 110-200 mm, and the diameter of the feeding roller is 50-100 mm;

[0024] Accordingly, the diameter relationship between the stripping roller and the feeding roller is positively correlated; or

[0025] The feed roller is positively correlated with the machine width of the lint cleaning machine.

[0026] Optionally, the given distance is the distance between the midpoint of the centerline connecting the two stripping rollers and the midpoint between the centerlines connecting the two feeding rollers;

[0027] The given distance is 100~300mm.

[0028] Optionally, the two stripping rollers are located on both sides of the middle section of the dust cage passing through its own axis;

[0029] Wherein, the front stripping roller is offset downward relative to the rear stripping roller.

[0030] Optionally, the amount by which the front stripping roller is offset downward relative to the rear stripping roller is 0.037 to 0.040 times the radius of the stripping roller.

[0031] Optionally, the front cotton feeding roller is fixed in a direction opposite to the rear cotton feeding roller;

[0032] The rear feed roller floats in a direction opposite to the front feed roller.

[0033] Optionally, the supporting member supporting the rear feed roller is guided by a guiding member or a guiding structure in a direction opposite to the front feed roller;

[0034] An elastic support is arranged on the side of the rear cotton feeding roller opposite to the front cotton feeding roller.

[0035] In an embodiment of the present invention, a lint cleaning machine equipped with the above-mentioned cotton layer conveying mechanism is also provided.

[0036] In an embodiment of the present invention, a position-adjustable crossbeam-loaded scraper is used, and the scraper provides sealing for the space between the rear cotton stripping roller and the rear cotton feeding roller. On the one hand, the scraper is loaded by a crossbeam with relatively high rigidity, and can maintain a good shape in the transverse direction of the lint cleaning machine, thereby being able to effectively avoid wind and ensure the stability of the lint during its downward movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a lint cleaning machine in one embodiment.

[0038] Figure 2 It is a schematic diagram of the structure of the cotton layer conveying mechanism of the lint cleaning machine in one embodiment.

[0039] Figure 3 The figure is a schematic diagram of the assembly structure of the front and rear cotton feeding rollers on the lint cleaning machine in one embodiment.

[0040] In the figure: 1. Support leg, 2. Straightening plate, 3. Flanging, 4. Air supply port, 5. Taker-in roller, 6. Straightening knife, 7. Lower cotton box, 8. Upper cotton box, 9. Front sealing rubber, 10. Front stripping roller, 11. Front wall plate of air duct, 12. Dust cage, 13. Air duct, 14. Cotton inlet, 15. Sealing rubber, 16. Rear stripping roller, 17. Rear sealing rubber, 18. Lower support plate, 19. Roller scraper assembly, 20. Front feeding roller, 21. Rear feeding roller, 22. Sealing plate, 23. Straightening plate , 24. Cotton picking plate assembly, 25. Cotton outlet, 26. Air supply plate, 27. Mounting seat, 28. Long hole, 29. Bolt, 30. Nut, 31. Flat washer, 32. Spring washer, 33. Bolt, 34. Nut, 35. Flat washer, 36. Bolt hole, 37. Mounting plate, 38. Crossbeam, 39. Scraper, 40. Sealing rubber, 41. Support, 42. Front feeding roller shaft, 43. Rear feeding roller shaft, 44. Guide hole, 45. Bearing seat, 46. Spring guide column assembly. DETAILED DESCRIPTION

[0041] Since most cotton processing machines rely on wind power for transportation, they often need to be configured with a relatively closed box in terms of structure. The panels located around the box to build the box are usually called wall panels.

[0042] In terms of orientation, based on the flow of materials, the cotton processing machinery has a definite front and back, and a corresponding left and right.

[0043] Cleaning machines are divided into lint cleaning machines and seed cotton cleaning machines. The cotton layer conveying mechanism provided in the embodiment of the present invention is suitable for lint cleaning machines.

[0044] Figure 1 The lint cleaning machine structure shown is a common lint cleaning machine structure, but it is not the only lint cleaning machine structure. However, in most lint cleaning machines, the two stripping rollers used to strip the lint absorbed on the dust cage 12 and the two feeding rollers used to transport the lint stripped by the two stripping rollers downward are roughly in an up and down relationship in orientation, but the position will deviate in the horizontal direction depending on different choices.

[0045] Figure 2 The structure shown is Figure 1 The local structure is recorded as the cotton layer conveying mechanism, which is an assembly used to convey the cotton layer from the dust cage to the licker-in roller in the lint cleaning machine. Figure 2 As can be seen from the structure shown, the cotton layer conveying mechanism includes two cotton stripping rollers, two cotton feeding rollers, and a roller scraper assembly for dynamic sealing on the rear side.

[0046] Figure 2 In the machine, the two stripping rollers are arranged front and back in the direction, usually mounted on the left and right wall plates through bearings. Figure 2 Among them, one is the front stripping roller 10, and the other is the rear stripping roller 16 located at the rear side of the front stripping roller 10 and forming a cotton conveying gap between the front stripping roller 10.

[0047] It can be understood that the component that strips the lint from the dust cage 12 is mainly the rear stripping roller 16, and the front stripping roller 10 rotates in opposite directions to the rear stripping roller 16 to clamp and transport the lint stripped by the rear stripping roller 16 downward.

[0048] Generally speaking, there is a certain height difference between the front cotton stripping roller 10 and the rear cotton stripping roller 16. When the front cotton stripping roller 10 and the rear cotton stripping roller 16 are separated on both sides of the vertical symmetry plane of the dust cage 12 passing through its axis, a gap is left between the front cotton stripping roller 10 and the dust cage 12, and it turns in the opposite direction to the dust cage 12.

[0049] The rear stripping roller 16 is often in a state of being basically in contact with the dust cage 12 so as to strip the lint from the dust cage 12 . The rear stripping roller 16 and the dust cage 12 generally rotate in the same direction.

[0050] Regarding the height difference, according to the corresponding reference system, the two stripping rollers are located on both sides of the middle section of the dust cage 12 passing through its own axis;

[0051] The front stripping roller 10 is offset downward relative to the rear stripping roller 16, and the offset is based on the axis of the two stripping rollers.

[0052] Preferably, the amount of the front stripping roller 10 that is offset downward relative to the rear stripping roller 16 is 0.037 to 0.040 times the radius of the stripping roller.

[0053] Simply using two cotton stripping rollers will make the state of the cotton layer transported downward unstable, especially since the individual cotton stripping rollers are relatively large. If they are directly matched with the licker-in roller 5, the triangular area formed will be relatively large. In other words, the uncontrollable spatial distance through which the cotton lint passes is relatively large. After the unstable cotton layer is entangled by the licker-in roller 5, the thickness of the cotton layer formed on the licker-in roller 5 is uneven, resulting in a poor cleaning effect and damage to the cotton fibers. The discharged impurities contain more cotton fibers, which is the so-called white cotton discharge phenomenon.

[0054] For this purpose, a pair of cotton feeding rollers needs to be arranged below the two cotton stripping rollers. Relatively speaking, the individual cotton feeding rollers are relatively small, and the triangular area formed thereby is relatively small. In addition, based on the pulling generated by the clamping, the unstable state formed by the downward sending of the two cotton stripping rollers is eliminated, which is equivalent to pulling the cotton layer between the two cotton stripping rollers and the two cotton feeding rollers, so that this part of the cotton layer is straightened, which is conducive to forming a cotton layer with relatively uniform thickness on the licker-in roller 5.

[0055] In particular, by adjusting the speed, the linear speed of the feeding roller can be made slightly greater than the linear speed of the stripping roller. The aforementioned straightening is further manifested as elongation, and the thickness of the cotton layer on the licker-in roller 5 can be adjusted.

[0056] It can be understood that a thinner cotton layer is conducive to improving the trash removal rate and can improve the adaptability of the trash removal knife 6, especially the number of the trash removal knives 6 can be further reduced.

[0057] More specifically, one of the two cotton feeding rollers is a front cotton feeding roller 20 , and the other is a rear cotton feeding roller 21 located at the rear side of the front cotton feeding roller 20 and forming a cotton feeding gap with the front cotton feeding roller 20 .

[0058] In order to reduce the influence of wind and make the cotton layer more stable during its downward movement, the rear sides of the rear cotton stripping roller 16 and the rear cotton feeding roller 21 need to be sealed.

[0059] exist Figure 2 In the structure shown, a crossbeam 38 is provided, and a scraper 39 is installed on the crossbeam 38. The upper part of the scraper 39 is movably matched with the rear side of the rear cotton stripping roller 16, and the lower part is movably matched with the rear side of the rear cotton feeding roller 21 to form a seal.

[0060] The cross beam 38 can be made of rectangular steel pipes, or profiles such as channel steel. Figure 2 In the structure shown, the cross section of the crossbeam 38 is roughly a right-angled trapezoidal structure to adapt to the shape and position relationship between the rear cotton stripping roller 16 and the rear cotton feeding roller 21.

[0061] The two ends of the cross beam 38 can be plates, which are welded to the body of the cross beam 38 by welding. The plates are directly or indirectly connected to the wall panels on the corresponding sides. The connection is an adjustable connection, which can be adjusted to a position, so that the position of the cross beam 38 can be adjusted, so that the components located on the cross beam 38 can be adjusted.

[0062] Regarding the position adjustment structure of the beam 38, an adjustment structure by means of a mechanism may be adopted. For example, the two ends of the beam 38 are respectively driven by a linear motion mechanism, and when adjusting, the related linear motion mechanism is driven to achieve the position adjustment of the beam 38.

[0063] In some embodiments, the adjustable structure is configured as:

[0064] One of the ends of the cross beam 38 and the corresponding side wall plate is provided with an elongated hole, and the other end is provided with a bolt hole;

[0065] The long holes and bolt holes are used to fit the bolts for assembly.

[0066] Mounting fasteners can be found on Figure 2 The bolt 33, nut 34 and flat washer 35 may be replaced by a spring washer, and the flat washer 35 and the spring washer may be used together.

[0067] The elongated hole may be a straight hole or an arc-shaped hole.

[0068] The structure of the scraper 39 can be a single structure or an assembled structure. In some embodiments, the scraper 39 includes a plate body and a matching part, wherein the plate body is used for assembling the scraper 39 on the cross beam 38. The assembly between the plate body and the cross beam 38 can be connected by screws or by an adhesive structure. Today, when metal glue technology is relatively mature, the non-detachable connection between some plate structures, in addition to welding, is more commonly achieved by bonding with metal glue.

[0069] For screw connection, a plurality of screw holes may be opened on the plate body, and the plate body may be fixed on the crossbeam 38 using screws.

[0070] Furthermore, riveting, for example, can also be used.

[0071] It is not easy to adjust the assembly error of a rigid plate body. Therefore, the matching part is provided at each end of the plate body, and is a component or structural part for matching between the scraper and the rear cotton stripping roller 16 or the rear cotton feeding roller 21 .

[0072] The matching portion, when used as a component, is adapted to the aforementioned assembly structure of the scraper 39 , and when used as a structural portion, is adapted to the aforementioned single body structure of the scraper 39 .

[0073] When used as a single structure, the scraper 39 itself can be a relatively rigid structure. As a plate body, it has a certain elasticity, which can reduce the impact of assembly errors and manufacturing errors.

[0074] In some embodiments, the plate body and the matching portion are constructed as one body, that is, the scraper 39 adopts a single body structure, and the scraper 39 is correspondingly an elastic sealing component, such as a rubber sheet, and a polytetrafluoroethylene slide plate can also be used.

[0075] In some embodiments, the plate body is a rigid component, such as a steel plate, and the matching part is an elastic sealing component, such as rubber, and the elastic sealing component is fixed to the plate body by screws, rivets or bonding.

[0076] As mentioned above, due to different purposes, although both are rollers, the stripping roller and the feeding roller are not the same, which is common knowledge in the art. In the embodiment of the present invention, the diameter of the stripping roller is 110-200 mm, and the diameter of the feeding roller is 50-100 mm, in other words, the stripping roller is relatively larger.

[0077] Accordingly, in some embodiments, the diameter relationship between the stripping roller and the feeding roller is positively correlated, that is, the larger stripping roller is adapted to the larger feeding roller, and the smaller stripping roller is adapted to the smaller feeding roller.

[0078] However, in most applications, the feed roller is actually positively correlated with the machine width of the lint cleaning machine. If a larger machine width is equipped with a smaller diameter feed roller, the feed roller will bend and deform, and will swing under high-speed rotation conditions. Increasing the diameter of the feed roller can improve the overall rigidity.

[0079] In fact, from the perspective of cotton feeding stability, the smaller the diameter of the cotton feeding roller is, the better, and the distance between the clamping point of the cotton feeding roller and the licker-in roller 5 can be reduced.

[0080] In addition, the aforementioned given distance refers to the distance between the midpoint of the connecting line of the two stripping rollers and the midpoint of the connecting line of the two feeding rollers;

[0081] The given distance is 100~300mm.

[0082] In some embodiments, the front cotton feed roller 20 is fixed in a direction relative to the rear cotton feed roller 21; correspondingly, the rear cotton feed roller 21 floats in a direction relative to the front cotton feed roller 20, so that when the cotton layer is relatively thick, the rear cotton feed roller 21 moves in the opposite direction to the front cotton feed roller 20, thereby increasing the cotton feeding gap and reducing damage to the support structure of the cotton feed roller.

[0083] exist Figure 3In the structure shown, the supporting member supporting the rear feed roller 21 is guided by a guiding member or a guiding structure in a direction opposite to the front feed roller 20, as shown in FIG. Figure 3 The guide hole 44 shown in FIG. 4 is correspondingly configured as a bearing seat 45 , and the bearing seat 45 is guided in the guide hole 44 .

[0084] Furthermore, an elastic support is provided on a side of the rear feeding roller 21 opposite to the front feeding roller 20 .

[0085] about Figure 3 In the structure shown, there is a spring guide column assembly 46, which is shown as a structure at one end of the rear feed roller shaft 43, for example, and the same structure exists at the other end of the rear feed roller shaft 43.

[0086] The spring guide column assembly 46 is installed on the corresponding side wall plate, and the push rod of the spring guide column assembly 46 is supported on the rear side of the bearing seat 45 to provide a floating support portion for the bearing seat 45.

Claims

1. A cotton layer conveying mechanism is an assembly for conveying cotton layers from a dust cage to a licker-in roller in a lint cleaning machine, characterized in that: The cotton layer conveying mechanism comprises: Two stripping rollers, one is a front stripping roller, and the other is a rear stripping roller located at the rear side of the front stripping roller and forming a cotton feeding gap between the front stripping roller; Two cotton feeding rollers are located at a given distance below the two cotton stripping rollers, one of which is a front cotton feeding roller, and the other is a rear cotton feeding roller located at the rear side of the front cotton feeding roller and forming a cotton feeding gap between the front cotton feeding roller and the front cotton stripping roller; The crossbeam is located at the rear side of the space between the rear cotton stripping roller and the rear cotton feeding roller, and the end of the crossbeam and the side wall panel where the cotton box is located are assembled through an adjustable structure, so that the position of the crossbeam can be adjusted; A scraper is mounted on the crossbeam, the upper portion of the scraper is in sealed dynamic cooperation with the rear side of the rear cotton stripping roller, and the lower portion of the scraper is in sealed dynamic cooperation with the rear side of the rear cotton feeding roller; The scraper comprises: Plate body, used for assembling the scraper on the beam; The matching part is provided at each end of the plate body, and is a component or structural part for matching between the scraper and the rear stripping roller or the rear feeding roller; The plate body and the matching part are constructed as one body, and the scraper is correspondingly an elastic sealing component or a polytetrafluoroethylene sliding plate; or The plate body is a rigid component, and the matching part is an elastic sealing component, which is fixed to the plate body by screws, rivets or bonding; The given distance is the distance between the midpoint of the center line connecting the two stripping rollers and the midpoint of the center line connecting the two feeding rollers; The given distance is 100~300mm; The two stripping rollers are located on both sides of the middle section of the dust cage passing through its own axis; Wherein, the front stripping roller is offset downward relative to the rear stripping roller; The adjustable structure is constructed as follows: One of the ends of the cross beam and the corresponding side wall plate is provided with an elongated hole, and the other is provided with a bolt hole; The long holes and bolt holes are used to fit the bolts for assembly.

2. The cotton layer conveying mechanism according to claim 1, characterized in that: The diameter of the stripping roller is 110~200mm, and the diameter of the feeding roller is 50~100mm; Accordingly, the diameter relationship between the stripping roller and the feeding roller is positively correlated; or The feed roller is positively correlated with the machine width of the lint cleaning machine.

3. The cotton layer conveying mechanism according to claim 1, characterized in that: The amount of the front stripping roller's downward offset relative to the rear stripping roller is 0.037 to 0.040 times the radius of the stripping roller.

4. The cotton layer conveying mechanism according to claim 1, characterized in that: The front feeding roller is fixed in a direction relative to the rear feeding roller; The rear feed roller floats in a direction opposite to the front feed roller.

5. The cotton layer conveying mechanism according to claim 4, characterized in that: The supporting member supporting the rear feed roller is guided by a guide member or a guide structure in a direction opposite to the front feed roller; An elastic support is arranged on the side of the rear cotton feeding roller opposite to the front cotton feeding roller.

6. A lint cleaning machine equipped with the cotton layer conveying mechanism according to any one of claims 1 to 5.

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