JPH0661973U - Lap forming machine - Google Patents

Abstract

(57) [Abstract] [Purpose] When forming a wrap by winding a fleece or the like on a bobbin placed on a pair of winding drums, it is possible to easily discharge the air caught in the fleece or the like, thus providing high quality. Is to form a wrap. [Configuration] provided large number air discharge groove 12 of the inner surfaces of the pair of wrap plates P _1, P ₂ constituting the lap forming machine radially depth along the transverse direction of the air discharge groove 12 With respect to the rotation direction of the lap plates P _{1 and} P ₂ , the depth is gradually reduced toward the rear side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wrap forming machine that facilitates discharge of entrapped air when winding a fleece or the like on a bobbin mounted on a pair of winding drums to form a wrap.

[0002]

[Prior art]

First, an outline of the configuration of a lap forming machine such as a sliver wrap machine or a ribbon wrap machine will be described with reference to FIGS. 11 and 12. The pair of winding drums D _{1 and} D ₂ are driven and rotated in the same direction, and the pair of lap plates P ′ _{1 and} P ′ ₂ are arranged on both sides thereof so as to be vertically movable. Each lap plate P _'1, P' ₂ are their respective bobbin chuck cylinder 1a, and is rotatably supported by the 1b of the piston rod (not shown). The pair of lap plates P ′ _{1 and} P ′ ₂ are in a state of sandwiching both sides of the bobbin B, and are integrally attached to this. The upper ends of the lifting racks 2a and 2b are integrally attached to the bobbin chuck cylinders 1a and 1b, respectively. Pinions 4 (only one of which is shown in the figure) are attached to the portions of the horizontally supported rotating shaft 3 that face the elevating racks 2a and 2b, respectively. The racks 2a and 2b are in mesh with each other. Another pinion 5 is attached to one end of the rotating shaft 3. The pressurizing cylinder 6 is arranged so that its piston rod 7 is orthogonal to the rotating shaft 3 and is horizontal, and the rack 8 attached to the tip of the piston rod 7 and the pinion 5 mesh with each other. ing.

The bobbin B is arranged between a pair of winding drums D _{1 and} D ₂ to wind up the layered fleece F. The fleece F is drafted by a draft device and Due to the improved parallelism of the fibers that make up the fiber, the fibers forming the wrap layer formed by the wrap forming machine enter the layer of the wrap just wound and rewind it. In some cases, licking, which is a phenomenon that makes the layers of the wrap indistinguishable, may occur. If this licking occurs, it cannot be spun in the subsequent process. In order to prevent such licking, a set of two calender rollers 9 is arranged on the upstream side of the pair of winding drums D _{1 and} D ₂ to apply the release roller F before being wound onto the bobbin B. The air contained in the fleece F is discharged by pressure compression and wound around the bobbin B.

The fleece F compressed and compressed by the calendar roller 9 moves on the upstream winding drum D ₂ and is wound around the bobbin B. Bobbin B has its both end portions are attached together to wrap the plate P _'1, P' ₂ of a pair, the lap plate P _'1, P' ₂ is out of the piston rod 7 of the pressurizing cylinder 6 Since the bobbin B moves up and down by the piston rods (not shown) of the bobbin chuck cylinders 1a and 1b, the bobbin B is moved by the pressurizing force Q of the pressurizing cylinder 6 into the drums D1 _and D1. _It is pressed by ₂ (see Fig. 12).

In this way, the bobbin B is paired with the pair of winding drums D._1,D₂Since the fleece F is wound on the upper side, the calender roller 9 and the winding drum D on the upstream side are wound.₂A predetermined distance is generated between the fleece F and the fleece F compressed by the calender roller 9 and the winding drum D.₂While moving up, it expands rapidly again including air. This expanded fleece F is the winding drum D₂The portion on which the component of the pressurizing force Q of the pressurizing cylinder 6 acts (that is, the wrap L wound around the bobbin B is the winding drum D).₂Is compressed under pressure). And the downstream winding drum D ₁ Is again expanded while being transferred to the winding drum D.₁In the portion where the component force of the pressing force of the pressurizing cylinder 6 acts, the pressure is compressed again. Take-up drum D₁The fleece F pressed and compressed by the expands, and each winding drum D_1,D₂Rewinding drum D by rotating₂Reach the pressurized part of. By repeating this, the wrap L is wound up.

Further, the winding of the lap in the lap forming machine is performed by placing the bobbin B on the pair of winding drums D _{1 and} D ₂ and rotating the bobbin B in a driven manner. Therefore, as the diameter of the wrap L wound around the bobbin B increases, the portion of the lap L that comes into contact with the winding drums D _{1 and} D ₂ increases and the portion dents. The slack is generated in the portion immediately after the portion in contact with the winding drums D _{1 and} D ₂ .

When the fleece F transferred on the winding drum D ₂ approaches the pressurizing portion, the fleece F overlaps the outermost layer of the lap L and is transferred downstream. Then, the fleece F and the wrap L wound around the bobbin B are pressed and compressed in an overlapping state. In this way, when the fleece F and the wrap L are pressurized and compressed, the air contained in the fleece F and inflating the fleece F sandwiches the bobbin B at both end edges thereof. to have a pair of wrap plates P _'1, P' ₂ in contact (between the respective lap plate P _'1, P' ₂ and each winding drum D _1, D ₂ at the time of bobbin clamping about 1 mm gap is formed), the layer side of the wrap L (the upper side with respect to the fleece F immediately before being wound up), and the winding drum D ₂ side (the fleece F immediately before being wound up). It is discharged toward the bottom of the standard).

As described above, the air contained in the fleece F is effectively discharged rearward when the fleece F is compressed and compressed, but the fleece F moves above the take-up drum D ₂ . When it is transferred, it is accompanied by air. Most of this entrained airflow is discharged rearward between the outer layer of the wrap L and the fleece F, but a part of it is introduced between the free layer F and the outer layer of the wrap L. Then, the air flowing between the fleece F and the wrap L contacts the lap L wound around the bobbin B and both end edges of the fleece F with the lap plates P ′ _{1 and} P ′ ₂ as described above. Therefore, between the fibers of the fleece F, which are extruded rearward (on the winding drum D ₂ side), and the fleece F of the outer layer of the lap L, a lateral side (lap plate P divided into those that are pushed to _'1, P' ₂ side).

[0009] Among the side of the air flowing between the the fleece F and the lap L that is extruded (Rappupure over preparative P _'1, P' ₂ side), each lap plate P _'1, P 'although being discharged toward the outer side of the _2, the air is the lap plate P'_'2 and from between the both end edges of the fleece F the lap plate P' _1, P _1, P _'2 While being extruded toward the side of, the fibers with uniform parallelism may be disturbed, and the surface (outer peripheral side) may be disturbed to give a fluffy state, and licking may occur when rewound. Further, the lap plate P _'1, P' ₂ of the inner surface of a conventional wrap forming machines, because that was in planar inflow air each lap plate P as described above _'1, P' ₂ and fleece When discharged toward the outer peripheral side of the lap plates P ′ _{1 and} P ′ ₂ from between the both end edges of F, the fleece F is disturbed because it is not discharged smoothly. Licking may occur when the wrap L formed by winding is wound back. These adverse effects become more prominent as the winding speed increases. Further, the air that has entered between the wrap L and the fleece F may not be pushed out to the outside as described above, but may remain in the state of being accumulated between the fibers forming the fleece F. The wrap L formed by winding the fleece F containing such air is too soft, and there is also a problem that a wrap having a large diameter cannot be formed.

[0010]

[Problems to be solved by the device]

 In view of the above-mentioned problems, the present invention provides a method for forming a wrap by winding a fleece or the like on a bobbin mounted on a pair of winding drums by a simple improvement of the lap plate constituting the lap forming machine. In addition, the problem is to make it easy to discharge the air caught in the fleece or the like to form a high quality wrap.

[0011]

[Means for Solving the Problems]

 In order to solve this problem, the means adopted by the present invention is a pair of winding drums, and the bobbins mounted on the pair of winding drums are clamped at both end surfaces of the pair of winding drums and are integrally attached thereto. A pair of lap plates and a pressurizing cylinder for urging the pair of lap plates downward via a thrust transmission mechanism, and the lap wound on the bobbin by the pressurizing cylinder. In a lap forming machine configured to wind a wrap by rotating the bobbin while pressing the pair of take-up drums, a plurality of air discharge grooves are radially provided on the inner surface of each lap plate. That is, the depth along the transverse direction of the air discharge groove is gradually shallowed toward the rear side with respect to the rotation direction of the lap plate.

[0012]

[Function of the device]

 Of the air that flows with the fleece and flows between the fleece and the lap, it is not pushed backward but flows between the fleece and the lap and is pushed out to the side, or included in the fleece or wrap When the air is compressed, it is pushed out to the side without being discharged backward when it reaches the lap plate, and then passes through the air discharge groove formed on the inner surface of the lap plate to the outer circumference of the lap plate. Flowing to the side. Since the depth of the air discharge groove along the transverse direction is gradually shallower toward the rear side along the rotation direction of the lap plate, the air discharge groove passes through the air discharge groove to the outer peripheral side of the lap plate. The airflow that is about to flow toward the outside smoothly flows to the outside in cooperation with the rotating action of the lap plate and is discharged to the outside. Therefore, the wrap of the outer layer regulated by the wrap plate and the fibers at both ends of the fleece are not disturbed by the accompanying air flow. Also, since the cross-sectional shape of the air discharge groove is as described above, the fibers of the outer layer of the wrap formed by the increase in the winding diameter while repeating compression and expansion are not damaged and a good quality wrap is formed. Be done.

[0013]

【Example】

Hereinafter, the present invention will be described in more detail with reference to examples. The same parts as those described in the above-mentioned "Prior Art" are designated by the same reference numerals, and only the characteristic parts of the present invention will be described while avoiding duplicated description. 1 to 3, the both ends of the bobbin B are sandwiched, and the center portions of the pair of disc-shaped lap plates P _{1 and} P ₂ arranged on the sides of the winding drums D _{1 and} D ₂ are located in the center portions. A boss hole 11 for inserting a boss (not shown) is provided, and a large number of air discharge grooves 12 (six in the embodiment) are formed on the inner surface of the boss hole 11 at equal intervals in the circumferential direction. It is provided along the radial direction. As shown in detail in FIG. 4, the cross-sectional shape of the air discharge groove 12 is such that the depth gradually increases toward the rear side with respect to the rotation direction of the lap plates P _{1 and} P _2. It is shallow. Since the pair of lap plates P _{1 and} P ₂ are each formed with the air discharge groove 12 on the inner surface (the surfaces facing each other in the arranged state), the shape including the cross-sectional shape thereof The air discharge grooves 12 formed on the inner surfaces of the pair of lap plates P _{1 and} P ₂ are symmetrical to each other.

Then, the wrap L wound around the bobbin B is pressed by the winding drums D _{1 and} D ₂ by the pressure of the pressurizing cylinder 6, and the fleece F is wound up. Here, as described in the section “Prior Art”, the air contained in the fleece F is discharged to the outer layer side of the wrap L when it is pressurized and compressed by the winding drum D _2. And the air discharged to the winding drum D ₂ side, and most of the air discharged to the outer layer side of the wrap L is the same as the air flow entrained in the wound fleece F. The remaining airflow is discharged from between the outer layer of the wrap F and the outer layer of the wrap L, and only the remaining airflow enters the fleece F together with a part of the above-mentioned associated airflow. Further, the air contained in the fleece F and the part of the accompanying air flow discharged to the take-up drum D ₂ side flow to both ends of the fleece F and then to the respective lap plates P _1, P. It is effectively discharged to the outside through the air discharge groove 12 provided in ₂ . Here, the air discharge groove 12 provided in the lap plate P _1, P ₂ is provided in the radial direction of the plate P _1, P _2, moreover the direction of rotation of the lap plate P _1, P ₂ Since the depth becomes gradually shallower toward the rear side with respect to the reference, the air flow discharged to the take-up drum D ₂ side acts on the cross-sectional shape of the air discharge groove 12 described above. Together with the rotating action of the lap plates P _{1 and} P ₂ , they smoothly flow to the outside through each air discharge groove 12 without generating turbulence and are discharged. For this reason, the fibers forming both ends of the fleece F just before being wound up are not disturbed by the air flow.

Further, the air that is accompanied by the fleece F and enters the fleece F is pushed out laterally through the fibers of the outer layer of the fleece F or the wrap L at the time of compression and compression, and each lap plate After reaching P _{1 and} P _{2 , the} air is guided to the air discharge groove 12 provided therein, and is smoothly discharged to the outside by the same action as described above. Therefore, the fibers at both ends of the fleece F and the wrap L are not disturbed by the exhaust air flow. The outer layer of the wrap L is also compressed by the winding drum D ₁ and then expanded again with air, and together with the newly wound fleece F, is compressed again at the winding drum D _2. Therefore, the air that is not discharged to the outside at the time of compression but remains inside is pushed out laterally through the fibers of the wrap L or the fleece F, as in the case of the fleece F described above, After reaching the lap plates P _{1 and} P _{2 ,} they are guided to the air discharge groove 12 provided in the lap plates P _{1 and} P ₂ and discharged to the outside.

Further, since the cross-sectional shape of the air discharge groove 12 provided on the inner surface of each lap plate P _1, P ₂ is as described above, both ends of the lap L and the fleece F are lap plates P _1, P _{2 .} Even when it comes into contact with P ₂ , the fibers constituting it do not get clogged in the air discharge groove 12, and the fibers of the outer layer of the wrap formed by increasing the winding diameter while repeating compression and expansion are the wrap plates P _1, P. _The fiber is not damaged when it comes into close contact with 2. On the other hand, when the shape of the air discharge groove 12 is a shallow rectangular shape, the fibers may be caught at both ends of the groove in the width direction, and the fibers may be damaged. Incidentally, the cross-sectional shape of the air discharge groove 12, that have become gradually shallower towards the side where the behind in its depth as described above with respect to the rotational direction of the lap plate P _1, P ₂ over the entire width However, as shown in FIG. 5 and FIG. 6, only the rearward portion of the groove with respect to the rotation direction of the lap plates P _{1 and} P ₂ in the width direction of the groove is tapered, or is made gentle. Even with an arc shape, the airflow that passes through this part is smoothly discharged.

Further, regarding the formation direction of the air discharge groove 12 provided on the inner side surface of each lap plate P _1, P ₂ , after the air contained in the outer layer of the fleece F or the lap L is pushed out to the side. However _, it is not always necessary to align them exactly in the radial direction as in the above-mentioned embodiment because it is easy to discharge them to the outside. For example, as shown in FIG. 7, concentric with the lap plates P _{1 and} P _2. A circle having a small radius may be arranged along the tangential direction, or the air discharge groove 12 itself may be formed in a spiral shape as shown in FIG. In particular, when the groove itself is formed in a spiral shape, the groove is likely to be located in the vicinity of the compressed portion of the lap because of the geometrical reason. Therefore, even if the number of formed grooves is small, the lap plate P _1, P ₂ It has the unique effect of being able to effectively discharge the air that has reached the area.

Further, in the above embodiment, the air discharge groove 12 is formed on the inner surface of the lap plate P _1, P ₂ by machining, but the forming method is not limited at all, and as a result, the air discharge groove 12 is formed. A groove may be formed. For example, as shown in FIGS. 9 and 10, a large number of fan-shaped divided pieces 14 are fixed to the inside of the substrate 13 by bolts 15 and nuts 16, and the air discharge groove 12 is provided between adjacent divided pieces 14. May be formed. In this case, one side end surface of each divided piece 14 is formed to be inclined with respect to the plate surface, whereby the depth of the air discharge groove 12 formed between the divided pieces 14 is increased. Can be varied as described above.

[0019]

[Effect of device]

 According to the present invention, a large number of air discharge grooves are provided in the inner surface of each lap plate constituting the lap forming machine in the radial direction, and the depth along the transverse direction is set in the rotational direction of the lap plate. Since the depth was gradually decreased toward the rear side along the air, the air that was entrained by the fleece and flowed between the fleece and the lap was not pushed out to the rear, but flowed in between the fleece and the lap. , Those that are pushed out to the side, or the air contained in the fleece and the wrap that is pushed out to the side without being discharged backwards during its compression, will reach this inner surface after reaching the lap plate. It flows to the outer peripheral side of the lap plate through the formed air discharge groove, and in the meantime, the action due to the groove shape of the air discharge groove and the rotation action of the lap plate are combined, and the smoothness is provided to the rear side. It flows. Therefore, the outer layer wrap regulated by the wrap plate and the fibers at both ends of the fleece are not disturbed by the accompanying airflow. This and the fact that the air discharge groove has the above-mentioned shape prevents both ends of the wrap contacting the lap plate from being damaged, and a good quality wrap is formed. In addition, the air that is contained in the fleece and that is pushed out laterally inside it, and the air that is accompanied by the fleece and flows into the outer layer of the wrap and that is pushed out laterally inside it, Since the air is effectively discharged at the lap plate, the amount of air contained in the wrap is reduced and a large diameter wrap can be wound up.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a lap forming machine according to the present invention.

FIG. 2 is a perspective view showing a pair of lap plates P _{1 and} P ₂ .

FIG. 3 is a front view of a lap plate P ₁ .

FIG. 4 is an enlarged cross-sectional view taken along line XX of FIG. 3, showing a cross-sectional shape of the air discharge groove 12.

FIG. 5 is a view showing another cross-sectional shape of the air discharge groove 12.

FIG. 6 is a view showing still another cross-sectional shape of the air discharge groove 12.

FIG. 7 is a lap plate P having a large number of air discharge grooves 12 formed tangentially to a small circle concentric with itself.
It is a top view of ₁ .

FIG. 8 is a front view of the lap plate P ₁ in which a large number of spiral air discharge grooves 12 are formed.

FIG. 9 is a perspective view of a lap plate P ₁ in which a plurality of fan-shaped divided pieces 14 are fixed to a substrate 13 and an air discharge groove 12 is formed.

FIG. 10 is an enlarged cross-sectional view of a portion of the air discharge groove 12 of the same.

FIG. 11 is an overall perspective view of a conventional lap forming machine.

FIG. 12 is a principle diagram for explaining the winding of the wrap L.

[Explanation of symbols]

B: bobbin D _1, D _2: the winding drum L: Wrap P _1, P _2: Wrap plate 6: pressurizing cylinder 12: air discharge groove

Claims (2)

[Scope of utility model registration request] 1. A pair of take-up drums, a pair of lap plates integrally attached to the both ends of bobbins mounted on the pair of take-up drums so as to sandwich the bobbins, and thrust transmission. A pressurizing cylinder for urging the pair of lap plates downward through a mechanism, while pressing the lap wound on the bobbin by the pressurizing cylinder against the pair of winding drums, In a lap forming machine having a structure in which a bobbin is driven to rotate to wind a wrap, a large number of air discharge grooves are provided in an inner surface of each lap plate in a radial direction, and a depth along a transverse direction of the air discharge grooves is set. A lap forming machine characterized in that the lap plate is gradually shallowed toward a rear side of the lap plate based on a rotation direction of the lap plate. 2. The lap forming machine according to claim 1, wherein an air discharge groove is provided in a spiral shape on the inner surface of each lap plate.