Carding machine upper and lower roller cleaning device and carding machine

Abstract

The utility model provides a carding machine upper and lower roller cleaning device and a carding machine, which comprise a left wall plate, a right wall plate, an upper roller, a lower pressing roller, an upper scraper, a lower scraper, two scraper seats, a cylinder and a driving part, the upper scraper and the lower scraper are respectively arranged on the corresponding scraper seats, and the device is characterized in that a certain gap is kept between the blade of the lower scraper and the surface of the lower roller. A proper gap is kept between the lower scraper and the lower roller to clean the roller, the scraper can cut air flow on the boundary layer of the roller, and impurities, short fibers, dust and the like in the air flow are separated out and sucked away by the air suction device below. The problems that in the prior art, due to contact between a scraper and the surface of a roller and improper adjustment, roller winding and overload faults are caused, the service life of the scraper is short, and noise generated by the scraper and the roller is large are solved, the structure is simple, and adjustment, operation and use are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of textile machinery manufacturing technology, and relates to the improvement of carding machines, specifically a cleaning device for the upper and lower rollers of a carding machine and a carding machine. Background Technology

[0002] The carding machine is a crucial part of the cotton spinning process. Its preceding process is the opening and cleaning machine, and its subsequent process is the drawing frame. It is mainly used to card pure cotton, chemical fibers, and their blends. The raw material is fed into the cotton box, and through a series of mechanical actions, the crimped cotton fibers are carded into a basically straight fiber state, and impurities are removed, ultimately forming a sliver for use in subsequent spinning processes.

[0003] Existing carding machine pressure roller devices, including upper and lower pressure rollers, are used to crush and remove fine impurities and defects remaining in the cotton web. During operation, short fibers and impurities often accumulate and adhere to the roller surface. Furthermore, due to static electricity generated by friction, some short fibers and impurities are more prone to accumulation and adhesion. Therefore, a roller scraper component that can effectively remove short fibers and impurities is needed.

[0004] Chinese Patent (Application No.: 201821628609.3) discloses a roller scraper component, specifically relating to the field of carding machine technology. It includes one cylinder, a first connecting rod, a second connecting rod, a third connecting rod, an upper scraper holder, and a lower scraper holder. The middle part of the first connecting rod is fixedly connected to the upper end of the piston rod of the cylinder. The upper and lower ends are respectively hinged to the middle part of the second connecting rod and one end of the third connecting rod. Springs are connected to the other ends of both the second and third connecting rods and are fixed to the frame. Upper and lower scrapers are respectively mounted on the upper and lower scraper holders and each has a fixed shaft. The second and third connecting rods each have several first mounting holes along their width. One end of the fixed shaft is detachably mounted in each of the first mounting holes. One end of the second connecting rod and the middle part of the third connecting rod are respectively fixed to the upper and lower scraper holders via the fixed shafts. This patent can effectively remove short fibers and impurities from the roller and also extend the service life of the upper and lower scrapers.

[0005] However, both this patented method and existing carding machines rely entirely on scrapers pressing against the rollers for cleaning, removing impurities adhering to the roller surface. This method places extremely high demands on the scraper material and flatness; improper scraper adjustment can cause problems such as roller entanglement. Improper scraper and roller adjustment increases friction, increasing roller rotation resistance, potentially leading to increased motor load or even overload, affecting production continuity. Therefore, careful adjustment of the scraper and roller tension is crucial during roller cleaning; excessive tightness increases load, while insufficient looseness results in poor cleaning. Currently, carding machine output and speed have significantly increased, and with rising roller speeds, the noise generated by the scraper pressing against the rollers also increases. Furthermore, the aforementioned patent suffers from complex structure, inconvenient manufacturing, and high cost.

[0006] Therefore, there is an urgent need in this field to design a cleaning device for the upper and lower rollers of a carding machine and a carding machine in which the structure is simple and the operation is convenient. This device can solve the problems of roller entanglement, overload failure, short service life of the scraper and roller caused by improper contact and adjustment between the scraper and the roller surface, as well as the problem of excessive noise generated by the scraper and roller. Utility Model Content

[0007] To address the aforementioned problems in the prior art, this utility model provides a cleaning device for the upper and lower rollers of a carding machine and a carding machine itself. It solves the problems of roller entanglement, overload failure, short scraper lifespan, and excessive noise generated by the scraper and rollers caused by improper contact and adjustment between the scraper and roller surfaces. Furthermore, it is convenient to adjust, operate, and use.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A cleaning device for the upper and lower rollers of a carding machine includes a left wall plate, a right wall plate, an upper roller, a lower roller, an upper scraper, a lower scraper, two scraper seats, a cylinder, and a driving component. The two ends of the two scraper seats are respectively rotatably mounted on the left wall plate and the right wall plate. The upper scraper and the lower scraper are respectively mounted on the corresponding scraper seats. The device is characterized in that the blade of the lower scraper maintains a certain gap with the surface of the lower roller.

[0010] Improvement to the above technical solution: The gap between the blade of the lower scraper and the surface of the lower roll in the working state is 0.1-0.8mm.

[0011] Further improvements to the above technical solution: The cylinder is vertically arranged and installed on the left or right wall panel. The telescopic rod at the upper end of the cylinder is connected to the scraper seat where the upper scraper is located via the upper scraper connecting rod. The scraper seat where the lower scraper is located is detachably connected to one end of the lower scraper connecting rod. The other end of the lower scraper connecting rod is mounted on the left or right wall panel via a fixed seat. Alternatively, the other end of the lower scraper connecting rod is connected to the fixed end of the cylinder or the telescopic rod at the lower end of the cylinder.

[0012] Further improvements to the above technical solution: The ends of the lower and upper scraper connecting rods that connect to the scraper seat are both semi-circular connecting ends. Each semi-circular connecting end has a central circular hole, and two arc grooves are symmetrically arranged around the central circular hole on the semi-circular connecting end. The scraper seat is equipped with an eccentric shaft and two fastening bolts. The scraper seat containing the lower scraper is rotatably connected to the lower scraper connecting rod via the eccentric shaft. The two fastening bolts pass through the two arc grooves respectively and are tightened with nuts. Similarly, the scraper seat containing the upper scraper is rotatably connected to the upper scraper connecting rod via the eccentric shaft. The two fastening bolts pass through the two arc grooves respectively and are tightened with nuts.

[0013] A further improvement to the above technical solution: the angle between the plane where the lower scraper is located and the vertical plane is in the range of 10°-30°.

[0014] Further improvement to the above technical solution: The scraper holder includes a scraper holder body and a scraper fixing plate. The scraper fixing plate is provided with screw holes. The scraper holder body is provided with a concave portion. The concave portion is provided with screw holes. An insertion gap is formed between the concave portion of the scraper holder body and the scraper fixing plate. The lower scraper or the upper scraper is inserted into the insertion gap and the lower scraper or the upper scraper is detachably fixed to the scraper holder with screws.

[0015] Further improvements to the above technical solution: The left and right ends of the scraper holder are respectively provided with a scraper connecting left shaft and a scraper connecting right shaft. A long bushing is fitted on the scraper connecting left shaft, and a short bushing is fitted on the scraper connecting right shaft. Two shaft holes are provided on the left and right walls, respectively. The left and right ends of the scraper holder where the upper scraper is located are respectively inserted into the two higher shaft holes on the left and right walls, respectively. The left and right ends of the scraper holder where the lower scraper is located are respectively inserted into the two lower shaft holes on the left and right walls.

[0016] A carding machine includes a cylinder, a doffer, a stripping roller, a cleaning roller, and an upper and lower roller cleaning device, characterized in that the upper and lower roller cleaning device adopts the above-mentioned carding machine upper and lower roller cleaning device, and a suction device is provided below the carding machine upper and lower roller cleaning device.

[0017] Compared with the prior art, this utility model has the following advantages and positive effects:

[0018] This invention utilizes the airflow generated by the high-speed rotation of the rollers to clean them by maintaining an appropriate angle and gap between the scraper and the rollers. The scraper can cut the airflow on the roller's surface layer, separating impurities, short fibers, and dust, which are then sucked away by the suction device below.

[0019] (1) This utility model solves the problems of roller entanglement, overload failure, short service life of the scraper and the roller caused by improper contact and adjustment between the scraper and the roller in the prior art, as well as the problem of high noise generated by the scraper and the roller, which greatly improves the cleaning efficiency, optimizes the fiber quality, and lays a good foundation for the subsequent spinning process.

[0020] (2) This utility model is applicable to various types of carding machines and is not affected by the width of the carding machine;

[0021] (3) The equipment stability of this utility model is enhanced, which can improve operating efficiency, extend equipment life and reduce maintenance costs;

[0022] (4) The present invention has a simple structure, low cost, and is easy to adjust and operate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the relative positions of the upper and lower roller cleaning devices of a carding machine according to Embodiment 1 of this utility model in the carding machine;

[0024] Figure 2 This is a schematic diagram showing the positions of some components on the carding machine in Embodiment 1 of the cleaning device for the upper and lower rollers of a carding machine according to this utility model;

[0025] Figure 3 This is a schematic diagram of an embodiment 1 of the cleaning device for the upper and lower rollers of a carding machine, which is installed on the wall panel of the carding machine.

[0026] Figure 4 This is a schematic diagram showing the cooperation between the lower roller, the lower scraper, and the scraper seat in Embodiment 1 of the cleaning device for the upper and lower rollers of a carding machine according to this utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the assembly of the lower scraper and scraper seat in Embodiment 1 of the cleaning device for the upper and lower rollers of a carding machine according to this utility model.

[0028] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the cleaning device for the upper and lower rollers of a carding machine according to the present invention.

[0029] The numbers in the diagram are: 1. Lower roller; 2. Lower scraper; 3. Scraper seat; 4. Lower scraper connecting rod; 5. Fixing seat; 6. Scraper fixing plate; 7. Cylinder; 8. Upper roller; 9. Upper scraper connecting rod; 10. Upper scraper; 11. Fixing screw; 12. Peeling roller; 13. Doffer; 14. Cleaning roller; 15. Left scraper connecting shaft; 16. Right scraper connecting shaft; 17. Long shaft bushing; 18. Short shaft bushing. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] See Figures 1-5 Embodiment 1 of the cleaning device for the upper and lower rollers of a carding machine according to this utility model includes a left wall plate, a right wall plate, an upper roller 8, a lower roller 1, an upper scraper 10, a lower scraper 2, two scraper seats 3, a cylinder 7, and a driving component. The two ends of the two scraper seats 3 are respectively rotatably mounted on the left wall plate and the right wall plate. The upper scraper 10 and the lower scraper 2 are respectively mounted on the corresponding scraper seats 3. The blade of the lower scraper 2 maintains a certain gap with the surface of the lower roller 1.

[0032] Furthermore, the gap between the blade of the lower scraper 2 and the surface of the lower roll 1 in the working state is 0.1-0.8 mm, and preferably 0.2-0.4 mm.

[0033] Furthermore, the aforementioned cylinder 7 is vertically positioned and fixed to the left or right wall panel. Specifically, the lower end of cylinder 7 is hinged to the left or right wall panel, and the telescopic rod at the upper end of cylinder 7 is connected to the scraper seat 3 containing the upper scraper via the upper scraper connecting rod 9. Specifically, the telescopic rod at the upper end of cylinder 7 is vertically positioned, and the upper scraper connecting rod 9 is horizontally positioned. The telescopic rod at the upper end of cylinder 7 and the upper scraper connecting rod 9 are fixedly connected by bolts. The other end of the upper scraper connecting rod 9 is detachably connected to the scraper seat 3 containing the upper scraper 10. The scraper seat 3 containing the lower scraper 2 is detachably connected to one end of the lower scraper connecting rod 4, which is horizontally positioned. The other end of the lower scraper connecting rod 4 is fixedly connected to the fixing seat 5 with bolts. The fixing seat 5 is positioned on the left or right wall panel.

[0034] Furthermore, the ends of the lower scraper connecting rod 4 and the upper scraper connecting rod 9 that connect to the corresponding scraper seat 3 are both semi-circular connecting ends. A central circular hole is provided on the semi-circular connecting end, and two arc grooves are symmetrically arranged around the central circular hole. An eccentric shaft and two fastening bolts are provided on the scraper seat 3. The scraper seat 3 where the lower scraper 2 is located is rotatably connected to the lower scraper connecting rod 4 via the eccentric shaft. The two fastening bolts pass through the two arc grooves respectively and are tightened with nuts. Similarly, the scraper seat 3 where the upper scraper 10 is located is rotatably connected to the upper scraper connecting rod 9 via the eccentric shaft. The two fastening bolts pass through the two arc grooves respectively and are tightened with nuts. After loosening the nuts, the tilt angle of the lower scraper 2 can be adjusted by rotating the scraper seat 3.

[0035] Preferably, the angle between the plane containing the lower scraper 2 and the vertical plane is in the range of 10°-30°. To facilitate precise adjustment of the tilt angle of the lower scraper 2, graduations are provided on the edges of the two arc grooves on the semi-circular connecting end of the lower scraper connecting rod 4.

[0036] Furthermore, the aforementioned scraper holder 3 includes a scraper holder body and a scraper fixing plate 6. The scraper fixing plate 6 has screw holes, and the scraper holder body has a recessed portion with screw holes. An insertion gap is formed between the recessed portion of the scraper holder body and the scraper fixing plate 6. The lower scraper 2 or upper scraper 10 is inserted into the insertion gap. After screws 11 are inserted into the screw holes and screw holes, the lower scraper 2 or upper scraper 10 is detachably fixed to the corresponding scraper holder 3.

[0037] Specifically: The left and right ends of the two scraper holders 3 are respectively provided with a scraper connecting left shaft 15 and a scraper connecting right shaft 16. A long bushing 17 is fitted onto the scraper connecting left shaft 15, and a short bushing 18 is fitted onto the scraper connecting right shaft 16. Two shaft holes are provided on the left and right walls, one above the other. The left and right ends of the scraper holder 3 containing the upper scraper 10 are respectively inserted into the two higher shaft holes on the left and right walls, and the left and right ends of the scraper holder 3 containing the lower scraper 2 are respectively inserted into the two lower shaft holes on the left and right walls.

[0038] See Figure 6 This invention relates to a second embodiment of a cleaning device for the upper and lower rollers of a carding machine. The main difference between this embodiment and the first embodiment is that in the second embodiment, the scraper seat 3 where the lower scraper 2 is located is detachably connected to one end of the lower scraper connecting rod 4, while the other end of the lower scraper connecting rod 4 is connected to the fixed end of the cylinder 7 or the telescopic rod at the lower end of the cylinder 7. The remaining structure of the second embodiment is the same as that of the first embodiment, so it will not be described again.

[0039] See Figures 1-6An embodiment of the carding machine of the present invention includes a cylinder, a doffer 13, a stripping roller 12, a cleaning roller 14, and an upper and lower roller cleaning device. The upper and lower roller cleaning device adopts the carding machine upper and lower roller cleaning device of the above embodiment 1 or embodiment 2. A suction device is provided below the upper and lower roller cleaning device of the carding machine.

[0040] When the carding machine of this invention is working, the upper scraper 10 is close to the surface of the upper roller 8, removing short fibers and impurities from the upper roller 8. The telescopic rod at the top of the cylinder 7 intermittently drives the upper scraper 10 to briefly leave the surface of the upper roller 8, allowing the accumulated short fibers and impurities to be sucked away by the suction device. Meanwhile, the lower scraper 2 does not contact the surface of the lower roller 1, and the gap between the two is in the range of 0.1-0.8mm (preferably about 0.3mm). Utilizing the airflow generated by the high-speed rotation of the lower roller 1, the lower scraper 2 cleans the lower roller 1 by maintaining an appropriate angle and gap with the lower roller 1. The lower scraper 2 can cut the boundary layer airflow of the lower roller 1, separating the impurities, short fibers, and dust, which are then sucked away by the suction device below.

[0041] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A cleaning device for the upper and lower rollers of a carding machine, comprising a left wall plate, a right wall plate, an upper roller, a lower roller, an upper scraper, a lower scraper, two scraper seats, a cylinder, and a driving component, wherein the two ends of the two scraper seats are respectively rotatably mounted on the left wall plate and the right wall plate, and the upper scraper and the lower scraper are respectively mounted on the corresponding scraper seats, characterized in that, The blade of the lower scraper maintains a certain gap with the surface of the lower roll.

2. The carding machine upper and lower roller cleaning device according to claim 1, characterized in that, The gap between the blade of the lower scraper and the surface of the lower roll in the working state is in the range of 0.1-0.8 mm.

3. The carding machine upper and lower roller cleaning device according to claim 1 or 2, characterized in that, The cylinder is vertically arranged and installed on the left or right wall panel. The telescopic rod at the upper end of the cylinder is connected to the scraper seat where the upper scraper is located via the upper scraper connecting rod. The scraper seat where the lower scraper is located is detachably connected to one end of the lower scraper connecting rod. The other end of the lower scraper connecting rod is mounted on the left or right wall panel via a fixed seat. Alternatively, the other end of the lower scraper connecting rod is connected to the fixed end of the cylinder or the telescopic rod at the lower end of the cylinder.

4. The carding machine upper and lower roller cleaning device according to claim 3, characterized in that, Both the lower and upper scraper connecting rods have a semi-circular connection end that connects to the scraper seat. The semi-circular connection end has a central circular hole, and two arc grooves are symmetrically arranged around the central circular hole. The scraper seat has an eccentric shaft and two fastening bolts. The scraper seat containing the lower scraper is rotatably connected to the lower scraper connecting rod via the eccentric shaft. The two fastening bolts pass through the two arc grooves and are secured with nuts. Similarly, the scraper seat containing the upper scraper is rotatably connected to the upper scraper connecting rod via the eccentric shaft. The two fastening bolts pass through the two arc grooves and are secured with nuts.

5. The carding machine upper and lower roller cleaning device according to claim 1 or 2, characterized in that, The angle between the plane where the lower scraper is located and the vertical plane ranges from 10° to 30°.

6. The carding machine upper and lower roller cleaning device according to claim 4, characterized in that, The angle between the plane where the lower scraper is located and the vertical plane ranges from 10° to 30°.

7. The carding machine upper and lower roller cleaning device according to claim 1 or 2, characterized in that, The scraper holder includes a scraper holder body and a scraper fixing plate. The scraper fixing plate is provided with screw holes. The scraper holder body is provided with a concave portion and a screw hole is provided on the concave portion. An insertion gap is formed between the concave portion of the scraper holder body and the scraper fixing plate. The lower scraper or the upper scraper is inserted into the insertion gap and is detachably fixed to the scraper holder with screws.

8. The carding machine upper and lower roller cleaning device according to claim 1 or 2, characterized in that, The scraper holder has a scraper connecting left shaft and a scraper connecting right shaft at its left and right ends, respectively. The scraper connecting left shaft is fitted with a long bushing, and the scraper connecting right shaft is fitted with a short bushing. The left and right wall panels each have two shaft holes at their top and bottom. The scraper holder where the upper scraper is located is inserted into the two higher shaft holes on the left and right wall panels, respectively. The scraper holder where the lower scraper is located is inserted into the two lower shaft holes on the left and right wall panels, respectively.

9. The carding machine upper and lower roller cleaning device according to claim 7, characterized in that, The scraper holder has a scraper connecting left shaft and a scraper connecting right shaft at its left and right ends, respectively. The scraper connecting left shaft is fitted with a long bushing, and the scraper connecting right shaft is fitted with a short bushing. The left and right wall panels each have two shaft holes at their top and bottom. The scraper holder where the upper scraper is located is inserted into the two higher shaft holes on the left and right wall panels, respectively. The scraper holder where the lower scraper is located is inserted into the two lower shaft holes on the left and right wall panels, respectively.

10. A carding machine, comprising a cylinder, a doffer, a stripping roller, a cleaning roller, and an upper and lower roller cleaning device, characterized in that, The upper and lower roller cleaning device is the carding machine upper and lower roller cleaning device according to any one of claims 1-9, and a suction device is provided below the carding machine upper and lower roller cleaning device.

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