Polypropylene staple fiber drafting and folding machine

Abstract

The utility model discloses a polypropylene staple fiber drafting and folding machine which comprises a folding machine body, an amplification cylinder and a limiting column, a rotating shaft is fixedly installed at the power output end of the folding machine body, a drafting roller used for drafting polypropylene staple fibers is fixedly installed at the end, away from the power output end, of the rotating shaft, and the amplification cylinder is detachably connected to the outer portion of the drafting roller in a sleeved mode. The opening end of the amplification cylinder is annularly distributed and rotationally provided with a connecting strip through a torsional spring, the end, away from the amplification cylinder, of the connecting strip is fixedly provided with a hook plate, the outer wall of the rotating shaft is annularly distributed and fixedly provided with fixing rings matched with the hook plate, and one end of the limiting column is fixedly connected with the end, away from the rotating shaft, of the drafting roller; a penetrating hole matched with the limiting column is formed in one end, far away from the opening end of the amplification cylinder, of the amplification cylinder. According to the utility model, all the parts are matched with one another, so that the operation diameter of the drawing roller can be changed more conveniently, and the production requirement of changing the surface tension of polypropylene staple fibers can be better met.

Description

TECHNICAL FIELD

[0001] The utility model relates to polypropylene short fiber drafting technical field especially relates to a polypropylene short fiber drafting and silk folding machine. BACKGROUND

[0002] The polypropylene short fiber drafting and silk folding machine is also a key equipment for secondary chemical fiber production of the polypropylene after consumption, and is mainly used for folding the fiber tows after drafting into uniform tows, facilitating subsequent winding and cutting processes.

[0003] According to different uses of the polypropylene short fiber, the surface tension of the polypropylene short fiber needs to be changed according to the uses during the reproduction of the polypropylene short fiber, and the existing technology generally changes the surface tension by replacing drafting rollers with different diameters, and the increase of the diameter of the drafting roller reduces the wrap angle (contact angle) between the fiber and the roller, thereby reducing the tension of the polypropylene short fiber, and vice versa, the decrease of the diameter of the drafting roller increases the tension of the polypropylene short fiber, but the drafting roller to be replaced is detachably connected to the power output end of the silk folding machine through a plurality of bolts and nuts, and when the drafting roller is replaced, not only the cooperation of tools is needed, but also the working personnel need to change the working angle for many times, and since the space between the drafting roller and the power output end of the silk folding machine is relatively small, the position of the tool needs to be adjusted for many times when the nut is rotated using the tool, so that the replacement of the drafting roller is time-consuming and laborious, and the improvement of the working efficiency is affected. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a polypropylene short fiber drafting and silk folding machine, which aims at solving the problems in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The polypropylene short fiber drafting and silk folding machine comprises:

[0007] The silk folding machine body is fixedly installed with a rotating shaft at the power output end, and the rotating shaft is fixedly installed with a drafting roller for drafting the polypropylene short fiber at one end away from the power output end;

[0008] The amplification cylinder is detachably sleeved outside the drafting roller, the open end of the amplification cylinder is annularly distributed and rotatably installed with a connecting strip through a torsion spring, one end of the connecting strip away from the amplification cylinder is fixedly installed with a hook plate, and the outer wall of the rotating shaft is fixedly installed with a fixed ring matched with the hook plate in an annular distribution;

[0009] The limiting column is fixedly connected at one end to one end of the drafting roller away from the rotating shaft, and one end of the amplification cylinder away from the open end thereof is provided with a penetrating hole matched with the limiting column.

[0010] As a further description of the above technical scheme:

[0011] The outer wall of the limiting column is fixedly provided with a fixing strip in a ring shape, and the inner wall of the penetrating hole is provided with a plurality of limiting grooves matched with the fixing strip in a ring shape.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the amplification cylinder is rotatably provided with a plurality of rollers in contact with the outer wall of the drafting roller.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the opening end of the amplification cylinder is provided with an annular groove, the central axis of the annular groove and the central axis of the penetrating hole coincide with each other, and the inner wall of the opening end of the annular groove is fixedly provided with a pressing spring, the inner cavity of the annular groove is slidably provided with a pressing ring connected with one end of the pressing spring, and the diameter of the pressing ring is not greater than the diameter of the drafting roller.

[0016] As a further description of the above technical solution:

[0017] The pressing spring is provided in a circular truncated cone structure, and the small end of the pressing spring is fixedly connected with one end of the pressing ring.

[0018] As a further description of the above technical solution:

[0019] The one end of the limiting disc close to the rotating shaft is fixedly provided with a limiting disc, the diameter of the limiting disc is greater than the diameter of the amplification cylinder, and the one end of the limiting disc is provided with a plurality of penetrating grooves matched with the connecting strip in a ring shape.

[0020] The utility model has the following beneficial effects:

[0021] The utility model discloses the installation and replacement of the amplification cylinder outside the drafting roller, which can directly change the operation diameter of the drafting roller, and the amplification cylinder is detachably installed with the drafting roller through the hook plate and the fixing ring, so that the change of the operation diameter of the drafting roller is more convenient, and the production demand of the surface tension change of the polypropylene short fiber can be better met. DRAWINGS

[0022] Figure 1 It is the perspective view of the utility model;

[0023] Figure 2 It is the assembly drawing of the amplification cylinder and the drafting roller of the utility model;

[0024] Figure 3 It is the assembly drawing of the amplification cylinder and the roller of the utility model;

[0025] Figure 4 It is the utility model Figure 1 The structure enlarged view of the place A in the utility model;

[0026] Figure 5For the utility model Figure 2 The structure enlarged view of B in the middle;

[0027] Figure 6 For the utility model Figure 3 The structure enlarged view of C in the middle.

[0028] Legend:

[0029] 1, rotating shaft;2, expansion cylinder;3, limiting disc;4, limiting column;5, drawing roller;6, connecting strip;7, hook plate;8, roller;9, top pressure ring;10, top pressure spring;11, fixed strip;12, fixed ring. Specific implementation

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Referring to Figures 1-6 An embodiment provided by the utility model: polypropylene staple fiber drawing and plying machine, comprising: a plying machine body, an expansion cylinder 2 and a limiting column 4.

[0032] Among them, the power output end of the plying machine body is fixedly installed with a rotating shaft 1, and the end, away from the power output end, of the rotating shaft 1 is fixedly installed with a drawing roller 5 for drawing polypropylene staple fiber, and a plurality of driving motors are installed inside the plying machine body, and the power output end of each driving motor is fixedly installed with a drawing roller 5, polypropylene staple fiber passes through a plurality of drawing rollers 5 in turn, and the speed difference of a plurality of drawing rollers 5 is controlled by a driving motor, so that the polypropylene staple fiber is stretched to the required fineness and strength, and then a plurality of polypropylene staple fibers are combined into one, forming uniform tows (this is prior art, and no more description is made here).

[0033] Among them, the diameter of the drawing roller 5 is the minimum diameter when polypropylene staple fiber is piled in the prior art, and the tension of the polypropylene staple fiber when piled by using the drawing roller 5 is at a maximum value.

[0034] The expansion cylinder 2 is detachably sleeved outside the drafting roller 5, the open end of the expansion cylinder 2 is annularly distributed, the connecting strip 6 is rotatably installed through a torsion spring, the hook plate 7 is fixedly installed at the end of the connecting strip 6 away from the expansion cylinder 2, the outer wall of the rotating shaft 1 is annularly distributed and fixedly installed with the fixed ring 12 matched with the hook plate 7, when it is needed to reduce the tension of the polypropylene staple fiber, the expansion cylinder 2 is sleeved outside the drafting roller 5 away from the rotating shaft 1, when the expansion cylinder 2 slides a distance, the connecting strip 6 is held and pressed, until the end of the hook plate 7 away from the connecting strip 6 and the fixed ring 12 are clamped with each other, the fixing of the connecting strip 6 is realized, the expansion cylinder 2 can rotate with the rotating shaft 1 and the drafting roller 5, thereby the wrap angle of the polypropylene staple fiber is reduced, the surface tension of the polypropylene staple fiber can be changed according to the use, thereby the time and effort required to change the surface tension of the polypropylene staple fiber are reduced.

[0035] The diameter of the expansion cylinder 2 can be replaced according to the value of the tension coefficient required to change the polypropylene staple fiber, the maximum diameter of the expansion cylinder 2 is not greater than the maximum diameter of the polypropylene staple fiber used in the prior art, so that the expansion cylinder 2 with different diameters can be replaced according to the production needs of the enterprise.

[0036] The end of the limiting column 4 is fixedly connected with the end of the drafting roller 5 away from the rotating shaft 1, the end of the expansion cylinder 2 away from the open end is provided with the insertion hole matched with the limiting column 4, after the multiple hook plates 7 and the multiple fixed rings 12 are clamped with each other, the limiting column 4 is inserted into the inner cavity of the insertion hole, thereby the installation position of the expansion cylinder 2 is limited, the central axis of the expansion cylinder 2 and the central axis of the drafting roller 5 are overlapped with each other, the deviation of the rotation center of the expansion cylinder 2 is prevented, and the stability of the expansion cylinder 2 during drafting of the polypropylene staple fiber is improved.

[0037] The outer wall of the limiting column 4 is annularly distributed and fixedly installed with the fixed strip 11, the inner wall of the insertion hole is annularly distributed and provided with the multiple limiting grooves matched with the fixed strip 11, through the cooperation of the multiple fixed strips 11 and the multiple limiting grooves, the expansion cylinder 2 can be re-limited, the expansion cylinder 2 can rotate synchronously with the drafting roller 5, and the stability of the rotation of the expansion cylinder 2 is improved.

[0038] The inner wall of the expansion cylinder 2 is annularly distributed and rotatably installed with the multiple rollers 8 in contact with the outer wall of the drafting roller 5, the multiple rollers 8 are provided with multiple rows along the inner wall of the expansion cylinder 2, after the expansion cylinder 2 is sleeved outside the drafting roller 5, the outer walls of the multiple rollers 8 are simultaneously attached to the outer wall of the drafting roller 5, the expansion cylinder 2 can be supported through the multiple rollers 8, and the stability of the expansion cylinder 2 during rotation with the drafting roller 5 is improved.

[0039] When the amplification cylinder 2 moves along the axis direction of the drafting roller 5, the roller 8 rotates along the axis direction of itself, which reduces the friction when the amplification cylinder 2 moves along the axis direction of the drafting roller 5 and improves the smoothness when the amplification cylinder 2 moves.

[0040] The amplification cylinder 2 is provided with an annular groove away from the inner wall of the open end of itself, the central axis of the annular groove and the central axis of the through hole coincide with each other, and the annular groove is fixedly installed with a jacking spring 10 away from the inner wall of the open end of itself, the inner cavity of the annular groove is slidably installed with a jacking ring 9 connected with one end of the jacking spring 10, the diameter of the jacking ring 9 is not greater than the diameter of the drafting roller 5, when the hook plate 7 and the fixed ring 12 are engaged with each other, one end of the jacking ring 9 and one end of the drafting roller 5 are in close contact with each other, and when the jacking ring 9 is extruded by the drafting roller 5, the jacking spring 10 is compressed, when the hook plate 7 and the fixed ring 12 are disengaged, the amplification cylinder 2 is pushed to move in the direction of the rotating shaft 1, until the hook plate 7 is separated from the inside of the fixed ring 12, the compression amount of the jacking spring 10 reaches the maximum value, and then the amplification cylinder 2 is pushed in the opposite direction, the jacking spring 10 releases its elastic potential energy and converts it into kinetic energy for resetting the jacking ring 9.

[0041] The jacking spring 10 is provided in a circular truncated cone structure, and the small end of the jacking spring 10 is fixedly connected with one end of the jacking ring 9, which can improve the compression amount of the jacking spring 10 and increase the movable distance of the jacking ring 9.

[0042] The drafting roller 5 is fixedly installed with a limiting disc 3 close to one end of the rotating shaft 1, the diameter of the limiting disc 3 is greater than the diameter of the amplification cylinder 2, and one end of the limiting disc 3 is annularly provided with a plurality of through grooves matched with the connecting strips 6, when the amplification cylinder 2 moves along the axis direction of the drafting roller 5, one end of the plurality of connecting strips 6 can pass through the plurality of through grooves, until the hook plate 7 moves to the upper side of the plurality of fixed rings 12, which is conducive to limiting the installation position of the plurality of connecting strips 6 through the plurality of through grooves.

[0043] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A polypropylene staple draft and lapping machine characterized in that, Include: The body of the filament winding machine, the power output end is fixedly installed with rotating shaft (1), the end away from the power output end of rotating shaft (1) is fixedly installed with the draft roller (5) for drafting the polypropylene short fiber; Expansion cylinder (2), detachably sleeved outside the draft roller (5), the opening end of the expansion cylinder (2) is annularly distributed through the torsional spring and is installed with the connecting strip (6), the end away from the expansion cylinder (2) of the connecting strip (6) is fixedly installed with the hook plate (7), the outer wall of the rotating shaft (1) is annularly distributed and is fixedly installed with the fixed ring (12) matched with the hook plate (7); Limiting column (4), one end and the end away from the rotating shaft (1) of the draft roller (5) is fixedly connected, the end away from the opening end of the expansion cylinder (2) is provided with the through hole matched with the limiting column (4).

2. The polypropylene staple draft cabling machine of claim 1 wherein: The outer wall of the limiting column (4) is annularly distributed and is fixedly installed with the fixed strip (11), the inner wall of the through hole is annularly distributed and is provided with a plurality of limiting grooves matched with the fixed strip (11).

3. The polypropylene staple draft cabling machine of claim 1 wherein: The inner wall of the expansion cylinder (2) is annularly distributed and is rotatably installed with a plurality of rollers (8) in contact with the outer wall of the draft roller (5).

4. The polypropylene staple draft cabling machine of claim 1 wherein: The inner wall of the opening end of the expansion cylinder (2) is provided with an annular groove, the central axis of the annular groove and the central axis of the through hole coincide with each other, and the inner wall of the opening end of the annular groove is fixedly installed with the pressing spring (10), the inner cavity of the annular groove is slidably installed with the pressing ring (9) connected with one end of the pressing spring (10), the diameter of the pressing ring (9) is not greater than the diameter of the draft roller (5).

5. The polypropylene staple draft cabling machine of claim 4 wherein: The pressing spring (10) is provided as a circular truncated cone structure, and the small head end of the pressing spring (10) is fixedly connected with one end of the pressing ring (9).

6. The polypropylene staple draft cabling machine of claim 1 wherein: The end close to the rotating shaft (1) of the draft roller (5) is fixedly installed with the limiting disc (3), the diameter of the limiting disc (3) is greater than the diameter of the expansion cylinder (2), and the end of the limiting disc (3) is annularly distributed and is provided with a plurality of through grooves matched with the connecting strip (6).

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