Polyester staple fiber cutting device

Abstract

The utility model discloses a polyester staple fiber cutting device, which relates to the technical field of cutting devices, and comprises a blanking box and a rotatable driving roller mounted at the top of an inner cavity of the blanking box, and further comprises a fixed shaft, two ends of the fixed shaft are fixedly connected with the inner wall of the blanking box, and an eccentric shaft sleeve is fixedly sleeved on the outer wall of the blanking box; the middle part of the cutter seat is movably connected with a telescopic cutting blade; the connecting assembly is arranged between the cutter seat and the fixing shaft, and the cutter seat is movably connected with the fixing shaft through the connecting assembly and can rotate around the outer wall of the fixing shaft. The cutting blade capable of rotating around the fixed shaft is arranged on the outer wall of the fixed shaft and matched with the upper connecting assembly and the eccentric shaft sleeve, so that the cutting blade extends outwards when rotating to the position under the guiding action of the eccentric shaft sleeve, and fiber bundles in the conveying process are cut off; and the fiber bundles can be continuously cut off in the conveying process, so that the working efficiency of cutting off short fibers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting devices, in particular to a polyester staple fiber cutting device. Background Art

[0002] Currently, according to processing requirements, polyester staple fibers need to be cut into corresponding lengths, and the cutting process of polyester staple fibers is generally completed on a cutting device.

[0003] In the prior art, for example, a utility model patent with authorization announcement number CN215241093U discloses a regenerated polyester staple fiber cutting device, which replaces the traction device in the traditional fiber cutting device with a pressure roller extrusion structure as a driving structure for feeding the fiber bundle. In the process of feeding, the fiber bundle has a large force area and uniform force, and is not easily broken, thereby protecting the fiber bundle.

[0004] However, the above-mentioned cutting device still has the following problems when in use: the cutting of the short fibers is performed by an electric push rod to push the cutting plate to fit with the lining plate, and then a small motor drives the driving screw to rotate, so that the movable cutter moves along the cutting plate, and the blade cuts the fiber bundle; the transmission of the fiber bundle needs to be stopped during cutting, which affects the cutting efficiency, and other electrical appliances are required to cooperate with the drive, the manufacturing cost is high, and it is difficult to meet the use requirements. Therefore, a polyester short fiber cutting device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a polyester staple fiber cutting device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyester staple fiber cutting device, comprising a feed box and a rotatable driving roller installed on the top of the inner cavity of the feed box, and also comprising:

[0007] A fixed shaft is located below the driving roller, with both ends of the fixed shaft fixedly connected to the inner wall of the material box, and an eccentric shaft sleeve is fixedly sleeved on the outer wall of the material box;

[0008] A cutter seat, wherein a retractable cutting blade is movably connected to the middle of the cutter seat, and the tail end of the cutting blade is arranged in close contact with the outer wall of the eccentric sleeve;

[0009] A connecting component is arranged between the cutter seat and the fixed shaft. The cutter seat is movably connected to the fixed shaft through the connecting component and can rotate around the outer wall of the fixed shaft.

[0010] Preferably, the connecting assembly includes a supporting frame, both ends of the outer wall of the supporting frame are fixedly connected to fixing rods, one end of the fixing rod is fixedly connected to a connecting sleeve, the connecting sleeve is rotatably sleeved on the outer wall of the fixed shaft, and a mounting through hole is opened in the middle of the fixing rod, and the mounting through hole is used for the movable insertion and positioning of the cutting seat on the fixing rod.

[0011] Preferably, a transmission gear is fixedly connected to the outer wall of the connecting sleeve located at the same position on the fixed shaft, and the outer walls of the two transmission gears are meshed and connected.

[0012] Preferably, both ends of the cutter seat are fixedly connected with elastic compression springs, and one end of the elastic compression spring is fixedly connected to the outer wall of the supporting frame.

[0013] Preferably, a wheel mounting groove is formed on a side of the cutter seat facing the eccentric sleeve, a rotatable auxiliary roller is movably connected in the wheel mounting groove, and an outer wall of the auxiliary roller extends to the outside of the wheel mounting groove and fits with the outer wall of the eccentric sleeve.

[0014] Preferably, a raw material roller is fixedly installed on the top of the material box, and a transmission trough is fixedly provided below the material box.

[0015] Technical effects and advantages of the utility model:

[0016] The utility model provides a cutting blade that can rotate around the fixed shaft on the outer wall of the fixed shaft, and cooperates with the upper connecting component and the eccentric shaft sleeve, so that the cutting blade is guided by the eccentric shaft sleeve and extends outward when it rotates to a position, thereby cutting the fiber bundle in the transmission process, so that the fiber bundle can continuously complete the cutting operation in the transmission process, thereby improving the working efficiency of cutting short fibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the feed box of the utility model.

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A.

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point B.

[0021] Figure 5 It is a schematic diagram of the local three-dimensional structure of the eccentric sleeve of the utility model.

[0022] In the figure: 100, unloading box; 101, driving roller; 102, raw material roller; 103, transmission trough; 200, eccentric shaft sleeve; 300, fixed shaft; 301, connecting shaft sleeve; 302, fixing rod; 303, supporting frame; 304, transmission gear; 305, cutting knife seat; 306, cutting blade; 307, elastic compression spring; 308, wheel mounting groove; 309, auxiliary roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-5The polyester staple fiber cutting device shown in the figure comprises a feed box 100 and a rotatable driving roller 101 installed on the top of the inner cavity of the feed box 100. The driving rollers 101 are two and are arranged in parallel and spaced apart. At the same time, a driving motor is also installed on the outer wall of the feed box 100 to drive the driving rollers 101 to rotate, so as to realize the automatic transmission of the fiber bundle. A raw material roller 102 is fixedly installed on the top of the feed box 100. The raw material roller 102 can be used for winding the fiber bundle to be cut and plays a role of loading. A transmission slot 103 is fixedly provided at the bottom, and the transmission slot 103 can be connected to the conveyor belt on the production line, so that the cut fiber bundle falls into the transmission slot 103, and then enters the conveyor belt of the production line for transmission. It also includes a fixed shaft 300, a cutter seat 305 and a connecting component located below the driving roller 101. The two ends of the fixed shaft 300 are fixedly connected to the inner wall of the unloading box 100, and the outer wall of the unloading box 100 is fixedly sleeved with an eccentric shaft sleeve 200. The middle part of the cutter seat 305 is movably connected with a retractable cutter. The cutting blade 306, the tail end of the cutting blade 306 is arranged to fit with the outer wall of the eccentric sleeve 200, and the connecting component is arranged between the cutting seat 305 and the fixed shaft 300. The cutting seat 305 is movably connected to the fixed shaft 300 through the connecting component and can rotate around the outer wall of the fixed shaft 300. During the rotation of the cutting seat 305 equipped with the cutting blade 306 around the fixed shaft 300, due to the guiding effect of the eccentric sleeve 200, when the cutting seat 305 is rotated to the cutting position (the two cutting blades 306 are in a vertical position with the fiber bundle transmitted downward), it is guided and driven by the eccentric sleeve 200, so that the cutting seat 305 drives the cutting blade 306 to extend outward on the connecting component, so that the two cutting blades 306 move toward each other and contact with the fiber bundle in the transmission process to achieve the purpose of cutting. At the same time, with the continuous rotation of the cutting blade 306, the continued transmission of the fiber bundle can be avoided. In this way, the fiber bundle can be cut at intervals during the continuous transmission process, which helps to improve work efficiency.

[0025] It should be noted that the connecting component includes a carrier frame 303, both ends of the outer wall of the carrier frame 303 are fixedly connected to a fixing rod 302, one end of the fixing rod 302 is fixedly connected to a connecting sleeve 301, the connecting sleeve 301 is rotatably sleeved on the outer wall of the fixing shaft 300, a mounting through hole is opened in the middle of the fixing rod 302, the mounting through hole is used for the movably plugging and positioning of the cutter seat 305 on the fixing rod 302, the outer wall of the connecting sleeve 301 located at the same position on the fixing shaft 300 is fixedly connected to a transmission gear 304, and the outer walls of the two transmission gears 304 are meshed and connected. In this embodiment, the middle part of the carrier frame 303 is a through hole with a mounting through hole, and the cutter seat 305 is movably plugged into the mounting through hole, so that the cutter seat 305 can be telescopic on the carrier frame 303, and the carrier frame 3 03 Through the cooperation of the fixed rod 302 and the connecting sleeve 301, the connecting sleeve 301 can be used to rotate on the outer wall of the fixed shaft 300, thereby driving the carrier 303 to rotate around the fixed shaft 300. The transmission gear 304 on the outer wall of the connecting sleeve 301 can enable the carriers 303 on the two fixed shafts 300 to rotate synchronously in the opposite direction. In addition, the connecting sleeve 301 on one of the fixed shafts 300 can be connected to the driving roller 101 through a transmission component such as a chain and a sprocket or a synchronous belt and a synchronous pulley, so that the driving roller 101 can be rotated while driving the cutting blade 306 to rotate, so that the two can rotate synchronously, so that the rotation rate of the cutting blade 306 can be matched with the transmission rate of the fiber bundle, and no blocking effect caused by the different speeds of the two can be caused.

[0026] Furthermore, both ends of the cutter seat 305 are fixedly connected with elastic compression springs 307, one end of the elastic compression spring 307 is fixedly connected to the outer wall of the carrier 303, and the setting of the elastic compression spring 307 allows the carrier 303 and the cutter seat 305 to be elastically retracted, so that the tail end of the cutter seat 305 can always fit the outer wall of the eccentric sleeve 200, and at the same time, the rotation of the cutter seat 305 and the eccentricity difference of the outer wall of the eccentric sleeve 200 can make the cutter seat 305 move to the cutting position. The cutter seat 305 can extend downward to achieve stable cutting of the fiber bundle. A wheel mounting groove 308 is provided on the side of the cutter seat 305 facing the eccentric sleeve 200. A rotatable auxiliary roller 309 is movably connected in the wheel mounting groove 308. The outer wall of the auxiliary roller 309 extends to the outside of the wheel mounting groove 308 and fits with the outer wall of the eccentric sleeve 200. The wheel mounting groove 308 cooperates with the auxiliary roller 309 to reduce the friction resistance between the outer wall of the eccentric sleeve 200, thereby helping to reduce energy consumption.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polyester staple fiber cutting device, comprising a feed box (100) and a rotatable driving roller (101) installed at the top of the inner cavity of the feed box (100), characterized in that: Also includes: A fixed shaft (300) is located below the driving roller (101), with both ends of the fixed shaft (300) fixedly connected to the inner wall of the material discharge box (100), and an eccentric shaft sleeve (200) is fixedly sleeved on the outer wall of the material discharge box (100); A cutter seat (305), wherein a retractable cutting blade (306) is movably connected to the middle of the cutter seat (305), and the tail end of the cutting blade (306) is arranged in close contact with the outer wall of the eccentric shaft sleeve (200); A connecting component is arranged between the cutter seat (305) and the fixed shaft (300); the cutter seat (305) is movably connected to the fixed shaft (300) through the connecting component and can rotate around the outer wall of the fixed shaft (300).

2. A polyester staple fiber cutting device according to claim 1, characterized in that: The connection assembly comprises a carrier (303), both ends of the outer wall of the carrier (303) are fixedly connected to fixed rods (302), one end of the fixed rod (302) is fixedly connected to a connecting shaft sleeve (301), the connecting shaft sleeve (301) is rotatably sleeved on the outer wall of the fixed shaft (300), and a mounting through hole is opened in the middle of the fixed rod (302), and the mounting through hole is used for the movable insertion and positioning of the cutter seat (305) on the fixed rod (302).

3. The polyester staple fiber cutting device according to claim 2, characterized in that: The outer wall of the connecting shaft sleeve (301) located at the same position on the fixed shaft (300) is fixedly connected with a transmission gear (304), and the outer walls of the two transmission gears (304) are meshed and connected.

4. The polyester staple fiber cutting device according to claim 2, characterized in that: Both ends of the cutter seat (305) are fixedly connected to elastic compression springs (307), and one end of the elastic compression spring (307) is fixedly connected to the outer wall of the supporting frame (303).

5. The polyester staple fiber cutting device according to claim 1, characterized in that: A wheel mounting groove (308) is provided on a side of the cutter seat (305) facing the eccentric shaft sleeve (200), and a rotatable auxiliary roller (309) is movably connected in the wheel mounting groove (308), and an outer wall of the auxiliary roller (309) extends to the outside of the wheel mounting groove (308) and fits with the outer wall of the eccentric shaft sleeve (200).

6. The polyester staple fiber cutting device according to claim 5, characterized in that: A raw material roller (102) is fixedly mounted on the top of the material discharge box (100), and a transmission trough (103) is fixedly disposed below the material discharge box (100).

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