CN210788633U - Semicircular conductor drawing die - Google Patents

Abstract

The utility model discloses a semicircular conductor drawing die utensil, establish the die sleeve outside the mold core including mold core and cover, the mold core center is equipped with along the axial and draws the passageway, draw the passageway and divide into transposition district, transition zone, workspace, sizing district and export district along drawing the direction in proper order, the inner face in transposition district is circular, and the bore court in transposition district the transition zone direction reduces in proper order, the inner face in workspace and sizing district is semi-circular, and the bore of workspace reduces towards sizing district direction gradually, and sizing district bore keeps unchangeable, the inner face court of transition district the workspace direction bore reduces smooth connection in proper order transposition district and workspace, the bore court in export district is kept away from sizing district direction increases in proper order. The utility model discloses can avoid the rotatory strand of transposition to damage, guarantee conductor shaping precision simultaneously, improve the cable compactness, reduce material cost.

Description

Semicircular conductor drawing die

Technical Field

The utility model relates to a cable conductor produces technical field, concretely relates to semi-circular conductor drawing die.

Background

In order to reduce the outer diameter of the cable and reduce the amount of filling materials, materials such as wrapping, lining, armor and outer sheath are often used, the stranded conductor is pressed into a fan-shaped conductor, a tile-shaped conductor and a semicircular conductor, so that the space between single wires can be effectively reduced, and the combination is tighter after cabling. The existing semicircular pressing device mainly adopts a semicircular drawing die and a pinch roller die, the first traditional semicircular drawing die is only suitable for a monofilament drawing annealing process and cannot be applied to a drawing process of a stranded conductor, because a folded yarn needs to do rotary feeding action around a central line in the drawing process, and the rotary folded yarn is easily cut by an acute angle of the die to cause yarn breakage; the appearance of the product produced by the second type of pinch roller die can not accurately meet the semi-circular requirement, and the compactness of the whole cable structure is influenced.

Therefore, it is necessary to develop a semicircular conductor drawing die suitable for a stranded conductor drawing process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a semi-circular conductor drawing die, this mould can avoid the rotatory strand damage of transposition, guarantees the conductor shaping precision simultaneously, improves the cable compactness, reduces material cost.

In order to realize the purpose, the technical scheme of the utility model is that:

the utility model provides a semi-circular conductor drawing die utensil, establishes the die sleeve outside the mold core including mold core and cover, the mold core center is equipped with along the axial and draws the passageway, draw the passageway and divide into transposition district, transition district, workspace, sizing district and export district along drawing the direction in proper order, the inner face in transposition district is circular, and the bore court in transposition district the transition district direction reduces in proper order, the inner face in workspace and sizing district is semi-circular, and the bore court sizing district direction of workspace reduces gradually, and sizing district bore keeps unchangeable, the inner face court in transition district the workspace direction bore reduces smooth connection in proper order transposition district and workspace, the bore court in export district is kept away from sizing district direction increases in proper order.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a certain twisting space for the conductor in the twisting area and the transition area of the drawing channel, the strand is in rotary feeding action in the twisting area and the transition area and gradually transits to the working area, and the strand is prevented from directly entering the working area to collide with a die to cause the strand breaking;

2. the inner surface of the twisting area of the utility model is round without acute angle, which effectively prevents the thin monofilament in the plied yarn from being cut by the acute angle of the die to cause yarn breakage in the twisting process, thereby ensuring the quality of the product;

3. the transition area of the utility model is smoothly connected with the twisting area and the working area, so as to avoid the thin monofilaments of the folded yarns from colliding with the inner surface to cause yarn breakage in the twisting process;

4. the utility model discloses the semi-circular inner face that the stranded conductor reduces gradually through the workspace bore compresses tightly gradually, later keeps semi-circular shape that compresses tightly through the sizing district, later leaves the mould through the export district and accomplishes the operation that compresses tightly, can guarantee the product appearance degree of accuracy to guarantee whole cable structure's compactness, reduce filling material, around material costs such as package, inside lining, armor and oversheath.

The utility model discloses a further improvement scheme as follows:

further, the length of the twisting zone is 5-10 mm.

By adopting the scheme, the phenomenon that the twisted area is too short and the thin monofilaments in the twisting process touch the acute angle at the end part of the drawing channel to cause filament breakage is avoided; meanwhile, the overlong twisting area is avoided, and the manufacturing cost of the mold core is increased.

Further, the length of the working zone is 1-1.5 times of the length of the sizing zone.

By adopting the scheme, the lengths of the working area and the sizing area influence the deformation time and the shaping time of the stranded conductor, and the ratio of the deformation time to the shaping time is controlled to be 1: 1-1.5, and ensures the stable forming of the stranded conductor.

Further, the length of the sizing area is 0.8-1 times of the diameter of the semicircular inner surface of the sizing area.

By adopting the scheme, the length of the sizing area is controlled to be equal to the diameter of the inner surface of the semicircle (namely, the diameter of the formed conductor is 0.8-1 times), the forming time of the stranded conductor is ensured, the forming stability is influenced by too short forming time, and the waste of the mold core material is caused by too long forming time.

Further, the mold core is the ladder cylindrical, and the mold core includes coaxial big aperture section and small aperture section, the die sleeve cover is established small aperture section interference fit is fixed, the die sleeve forms the cylinder with the mold core cooperation.

By adopting the scheme, the die and the die core directly adopt an interference fit fixing mode, the cost is reduced, and the installation and the disassembly are convenient.

Furthermore, the circumferential surface of the die sleeve is provided with positioning holes.

By adopting the scheme, the die is positioned and fixed on the rack through the positioning holes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic view of another perspective structure according to an embodiment of the present invention.

Fig. 3 is a schematic sectional structure diagram of an embodiment of the present invention.

Shown in the figure:

1. a mold core; 101. a large-caliber section; 102. a small-caliber section; 103. a drawing channel; 104. a stranding region; 105. a transition zone; 106. a working area; 107. a sizing zone; 108. an exit zone;

2. a mold; 201. and (7) positioning the holes.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-3, the semicircular conductor drawing die 2 provided in this embodiment includes a die core 1 and a die sleeve sleeved outside the die core 1.

The mold core 1 is in a stepped cylindrical shape, the mold core 1 comprises a large-caliber section 101 and a small-caliber section 102 which are coaxial, the mold sleeve is sleeved on the small-caliber section 102 and is fixed in an interference fit mode, and the mold sleeve and the mold core 1 are matched to form a cylinder.

The die 2 and the die core 1 are directly fixed in an interference fit mode, so that the cost is reduced, and the installation and the disassembly are convenient.

The peripheral surface of the die sleeve is provided with a positioning hole 201, and the die 2 is positioned and fixed on the frame through the positioning hole 201.

The center of the mold core 1 is provided with a drawing channel 103 along the axial direction, and the drawing channel 103 is sequentially divided into a twisting zone 104, a transition zone 105, a working zone 106, a sizing zone 107 and an outlet zone 108 along the drawing direction.

The inner surface of the twisted zone 104 is circular, and the caliber of the twisted zone 104 decreases in sequence towards the transition zone 105. The length of the twisting zone 104 is 5-10mm, so that the phenomenon that the thin monofilaments in the twisting process touch the acute angle at the end part of the drawing channel 103 to cause filament breakage due to the fact that the twisting zone 104 is too short is avoided; while avoiding an excessively long stranding region 104 increases the manufacturing costs of the mold core 1.

The inner surfaces of the working area 106 and the sizing area 107 are both semicircular, the caliber of the working area 106 gradually decreases towards the sizing area 107, and the caliber of the sizing area 107 is kept unchanged.

The length of the working zone 106 is 1-1.5 times the length of the sizing zone 107.

The lengths of the working zone 106 and the sizing zone 107 influence the deformation time and the setting time of the stranded conductor, and the ratio of the deformation time to the setting time is controlled to be 1: 1-1.5, and ensures the stable forming of the stranded conductor.

The length of the diameter-defining region 107 is 0.9 times the diameter of the semicircular inner surface of the diameter-defining region 107.

The length of the sizing area 107 is controlled to be 0.9 times of the diameter of the inner surface of the semicircle (namely the diameter of the formed conductor), so that the forming time of the stranded conductor is ensured, the forming stability is influenced by too short forming time, and the material of the mold core 1 is wasted by too long forming time.

The inner surface of the transition region 105 is reduced in diameter toward the working region 106, and the smooth connection twisting region 104 and the working region 106 are sequentially reduced in diameter.

The diameter of the exit zone 108 increases in the direction away from the sizing zone 107.

In the embodiment, the twisting zone 104 and the transition zone 105 of the drawing channel 103 give a certain twisting space to the conductor, and the strands are in rotary feeding motion in the twisting zone 104 and the transition zone 105 and gradually transition to the working zone 106, so that the strands are prevented from directly entering the working zone 106 and colliding with the die 2 to cause yarn breakage;

the inner surface of the twisting area 104 is round without an acute angle, so that filament breakage caused by acute-angle cutting of thin monofilaments in the plied yarns by the die 2 in the twisting process is effectively prevented, and the quality of products is further ensured;

in this embodiment, the transition region 105 smoothly connects the twisting region 104 and the working region 106, so as to avoid filament breakage caused by collision of thin monofilaments of the strands against the inner surface during twisting;

the semi-circular inner face that this embodiment stranded conductor bore through work area 106 reduces gradually compresses tightly, later keeps semi-circular shape of compressing tightly through sizing district 107, later leaves mould 2 through export district 108 and accomplishes the operation of compressing tightly, can guarantee the product appearance degree of accuracy to guarantee whole cable structure's compactness, reduce filling material, around materials costs such as package, inside lining, armor and oversheath.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (6)

1. The utility model provides a semi-circular conductor drawing die, its characterized in that establishes the die sleeve outside the mold core including mold core and cover, the mold core center is equipped with along the axial and draws the passageway, draw the passageway and divide into transposition district, transition area, workspace, sizing district and export district along drawing the direction in proper order, the inner face in transposition district is circular, and the bore court in transposition district the transition area direction reduces in proper order, the inner face in workspace and sizing district is semi-circular, and the bore of workspace reduces towards sizing district direction gradually, and sizing district bore keeps unchangeable, the inner face court of transition district the workspace direction bore reduces smooth connection in proper order transposition district and workspace, the bore court in export district is kept away from sizing district direction increases in proper order.

2. The semi-circular conductor drawing die of claim 1, wherein the length of said twisted zone is 5-10 mm.

3. The semi-circular conductor drawing die of claim 1, wherein the length of said working zone is 1-1.5 times the length of said sizing zone.

4. The semicircular conductor drawing die as claimed in claim 1, wherein the length of the sizing area is 0.8-1 times the diameter of the semicircular inner face of the sizing area.

5. The semicircular conductor drawing die according to claim 1, wherein the die core is in a stepped cylindrical shape and comprises a large-caliber section and a small-caliber section which are coaxial, the die sleeve is sleeved on the small-caliber section and fixed in an interference fit manner, and the die sleeve and the die core are matched to form a cylinder.

6. The semi-circular conductor drawing die as claimed in claim 1, wherein the die sleeve has positioning holes formed on a peripheral surface thereof.

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