Variable-speed carding device of cotton yarn combing machine

Abstract

The utility model discloses a variable-speed carding device of a cotton yarn comber, which comprises a frame, a carding shaft and a driving shaft are rotatably connected onto the frame, a plurality of gears are mounted on the carding shaft, a plurality of limit strips are arranged on the driving shaft, and a plurality of driving wheels are slidably connected onto the driving shaft through the limit strips. Through cooperative arrangement of a plurality of gears and a driving wheel, the originally engaged gears and the driving wheel are separated by two driving mechanisms respectively, and meanwhile, the other group of gears which are cooperatively arranged are engaged with the driving wheel through pushing, so that when speed change is needed, the moving distance of the driving gears can be ignored; the problem that the rotating speed is reduced in the moving speed change process under the condition of a single driving gear is solved; through the cooperative arrangement of the plurality of gears and the driving gear, the driving gear does not need to slide over the plurality of gears to complete the adjustment in the adjustment with larger speed change, so that the efficiency is improved, and the abrasion caused by sliding over the plurality of gears is reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of variable speed combing of combing machines, in particular to a variable speed combing device for a cotton yarn combing machine. Background Art

[0002] A combing machine refers to a machine used to implement the combing process during the spinning process. Its main function is to remove shorter fibers, remove tangled particles (neps, hair particles, grass scraps, cocoon skin, etc.) in the fibers, and further straighten and parallelize the fibers, ultimately making a combed sliver with a relatively uniform thickness. When combing the cotton layer, the combing machine generally uses a variable speed combing method in order to better remove impurities in the cotton layer and obtain high-quality combed sliver.

[0003] Some combing machines in the prior art use a variable speed combing method in which the gear on the combing shaft is meshed with several driving gears with different numbers of teeth to change the speed (or the driving gear is meshed with several gears on the combing shafts with different numbers of teeth). However, in the process of adjusting the speed, the speed of the gear on the combing shaft will decrease when it slides from meshing with one driving gear to meshing with another driving gear, which may cause a speed change failure. Utility Model Content

[0004] Based on this, it is necessary to provide a variable speed combing device for a cotton yarn combing machine in response to the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a variable speed combing device of a cotton yarn combing machine, comprising a frame, a combing shaft and a driving shaft are rotatably connected to the frame, a plurality of gears are installed on the combing shaft, a plurality of limit bars are provided on the driving shaft, a plurality of driving wheels are slidably connected to the driving shaft through the limit bars, the number of teeth of the plurality of driving wheels are different, the driving wheels correspond to the gears one by one, two driving mechanisms are installed on the frame, the driving mechanism comprises a threaded rod, the threaded rod is rotatably connected to the frame, a rotating driving device is installed on the frame, the output end of the rotating driving device is drivingly connected to the threaded rod, a slide groove is provided on the frame, a sliding frame is slidably connected in the slide groove, the sliding frame is threadedly connected to the threaded rod, an extrusion block is slidably connected to the sliding frame, a linear actuator is installed on the sliding frame, and the output end of the linear actuator is connected to the extrusion block.

[0006] Preferably, both sides of the extrusion block are universally connected with universal beads.

[0007] Preferably, a second rotary drive device is installed on the frame, and an output end of the second rotary drive device is drivingly connected to the drive shaft.

[0008] Preferably, a plurality of protrusions are provided on the driving shaft.

[0009] Preferably, the output end of the rotary drive device is transmission-connected to the threaded rod via a coupling 1.

[0010] Preferably, the output end of the second rotary drive device is drivingly connected to the drive shaft via a second coupling.

[0011] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0012] Through the coordinated arrangement of multiple gears and driving wheels, two driving mechanisms are used to separate the originally meshed gears from the driving wheels respectively, and at the same time, another set of coordinated gears are pushed to mesh with the driving wheels, so that when speed change is required, the distance moved by the driving gear can be ignored, avoiding the problem of speed reduction during the moving speed change in the case of a single driving gear;

[0013] By cooperating with the drive gear, the drive gear no longer needs to slide over several gears to complete the adjustment in a large speed change, thereby improving efficiency and reducing wear caused by sliding over several gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0015] Figure 2 It is a front cross-sectional view of an embodiment of the utility model;

[0016] Figure 3 A side cross-sectional view of an embodiment of the utility model;

[0017] Figure 4 A three-dimensional diagram of a combing shaft and a driving shaft according to an embodiment of the present utility model;

[0018] Figure 5 A three-dimensional diagram of a sliding frame according to an embodiment of the present invention;

[0019] In the figure, 1, frame; 2, combing shaft; 3, driving shaft; 4, gear; 5, limit strip; 6, driving wheel; 7, threaded rod; 8, rotary driving device; 9, slide groove; 10, sliding frame; 11, extrusion block; 12, linear actuator; 13, universal ball; 14, rotary driving device 2; 15, protrusion; 16, coupling 1; 17, coupling 2. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0021] See also Figures 1 to 5 The embodiment of the present application provides a variable speed combing device for a cotton yarn combing machine, including a frame 1, a combing shaft 2 and a driving shaft 3 are rotatably connected to the frame 1, a plurality of gears 4 are installed on the combing shaft 2, a plurality of limit bars 5 are provided on the driving shaft 3, a plurality of driving wheels 6 are slidably connected to the driving shaft 3 through the limit bars 5, the number of teeth of the plurality of driving wheels 6 are different, and the driving wheels 6 correspond to the gears 4 one by one, and two driving mechanisms are installed on the frame 1, the driving mechanism includes a threaded rod 7, the threaded rod 7 is rotatably connected to the frame 1, a rotating driving device 8 is installed on the frame 1, the rotating driving device 8 can be a servo motor, and the output end of the rotating driving device 8 is transmission-connected to the threaded rod 7, a slide groove 9 is provided on the frame 1, a sliding frame 10 is slidably connected in the slide groove 9, the sliding frame 10 is threadedly connected to the threaded rod 7, an extrusion block 11 is slidably connected to the sliding frame 10, a linear actuator 12 is installed on the sliding frame 10, the linear actuator 12 can be an electric cylinder, and the output end of the linear actuator 12 is connected to the extrusion block 11.

[0022] In this embodiment, the threaded rod 7 is driven to rotate by the rotary drive device 8, so that the slide frame 10 can slide in the slide groove 9 on the frame 1. When the two sets of driving mechanisms drive the slide frame 10 to slide to the currently meshed gear 4 and the driving wheel 6, and the driving wheel 6 with a changing speed that needs to be pushed, the linear actuator 12 drives the extrusion block 11 to extend, so that when the threaded rod 7 drives the slide frame 10 to slide again, the extrusion block 11 can collide and squeeze the driving wheel 6 and push it on the driving shaft 3. When adjusting, the currently meshed gear 4 and the driving wheel 6 are first pushed by the slide frame 10 to push the driving wheel 6 So that it is no longer in meshing, when the driving wheel 6 is about to separate from the gear 4, another driving mechanism pushes the driving wheel 6 that needs to be adjusted to move to the corresponding gear 4, and finally, the separation and engagement of different groups of gears 4 and the driving wheel 6 are carried out synchronously, and finally the speed change of the combing shaft 2 is completed. After the adjustment is completed, the linear actuator 12 drives the extrusion block 11 to retract, so as to facilitate the next speed change adjustment; the extrusion block 11 slides on the sliding frame 10, avoiding damage to the linear actuator 12 when pushing the driving wheel 6; the setting of the limit strip 5 enables the driving wheel 6 to be driven by the driving shaft 3 to rotate and slide on the driving shaft 3 at the same time.

[0023] In some embodiments, in order to reduce the friction between the extrusion block 11 and the driving wheel 6 when the extrusion block 11 pushes the driving wheel 6 , universal beads 13 are universally connected on both sides of the extrusion block 11 .

[0024] In some embodiments, in order to facilitate driving the driving shaft 3 to rotate, a second rotating driving device 14 is installed on the frame 1, and the output end of the second rotating driving device 14 is drivingly connected to the driving shaft 3.

[0025] In some embodiments, in order to prevent the driving wheel 6 from sliding on the driving shaft 3, a plurality of protrusions 15 are provided on the driving shaft 3. The protrusions 15 are thin layers of flexible material, which will not affect the sliding of the driving wheel 6, and will not cause the driving wheel 6 to move again due to the protrusions 15 after the sliding stops.

[0026] In some embodiments, in order to facilitate the rotation driving device 8 to drive the threaded rod 7 to rotate, the output end of the rotation driving device 8 is arranged to be transmission-connected with the threaded rod 7 through a coupling 16.

[0027] In some embodiments, in order to facilitate the second rotary drive device 14 to drive the drive shaft 3 to rotate, the output end of the second rotary drive device 14 is arranged to be transmission-connected to the drive shaft 3 via a second coupling 17 .

[0028] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A variable speed combing device for a cotton yarn combing machine, comprising a frame (1), to which a combing shaft (2) and a driving shaft (3) are rotatably connected, characterized in that: The combing shaft (2) is provided with a plurality of gears (4), the driving shaft (3) is provided with a plurality of limit bars (5), the driving shaft (3) is slidably connected with a plurality of driving wheels (6) via the limit bars (5), the plurality of driving wheels (6) have different numbers of teeth, the driving wheels (6) correspond to the gears (4) one by one, the frame (1) is provided with two driving mechanisms, the driving mechanisms include a threaded rod (7), the threaded rod (7) is rotatably connected to the frame (1), a rotary drive device (8) is installed on the frame (1), the output end of the rotary drive device (8) is transmission-connected to the threaded rod (7), a slide groove (9) is provided on the frame (1), a sliding frame (10) is slidably connected in the slide groove (9), the sliding frame (10) is threadedly connected to the threaded rod (7), an extrusion block (11) is slidably connected to the sliding frame (10), a linear actuator (12) is installed on the sliding frame (10), the output end of the linear actuator (12) is connected to the extrusion block (11).

2. The variable speed combing device for a cotton yarn combing machine according to claim 1, characterized in that: Universal beads (13) are universally connected on both sides of the extrusion block (11).

3. The variable speed combing device for a cotton yarn combing machine according to claim 1, characterized in that: A second rotary drive device (14) is mounted on the frame (1), and an output end of the second rotary drive device (14) is drivingly connected to the drive shaft (3).

4. The variable speed combing device for a cotton yarn combing machine according to claim 1, characterized in that: The drive shaft (3) is provided with a plurality of protrusions (15).

5. The variable speed combing device for a cotton yarn combing machine according to claim 1, characterized in that: The output end of the rotary drive device (8) is transmission-connected to the threaded rod (7) via a coupling 1 (16).

6. The variable speed combing device for a cotton yarn combing machine according to claim 3, characterized in that: The output end of the second rotary drive device (14) is transmission-connected to the drive shaft (3) via a second coupling (17).

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