Shielding net extrusion mechanism

Abstract

The utility model relates to the technical field of cable processing, in particular to a shielding net extruding mechanism which comprises an outer driving disc, an inner driving disc and a plurality of clamping pieces, the outer driving disc and the inner driving disc are both of an annular structure, the outer driving disc and the inner driving disc are coaxially arranged, and the tops of the clamping pieces face the center position close to the inner driving disc. The middle part of the clamping piece is pivoted on the inner driving disc, and the tail part of the clamping piece is pivoted on the outer driving disc; the multiple clamping pieces are configured in the mode that when the outer driving disc and the inner driving disc rotate relatively in one direction, the tops of the multiple clamping pieces are gathered towards the center, and when the outer driving disc and the inner driving disc rotate relatively in the other direction, the tops of the multiple clamping pieces are diffused towards the direction away from the center. According to the utility model, the clamping distance is changed in the approaching process of the plurality of clamping pieces, so that clamping and net expanding of cable shielding nets of various specifications are realized, and compared with the prior art, the applicability of clamping the shielding nets is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable processing technical field especially relates to a shielding net extrusion mechanism. BACKGROUND

[0002] Shielded cable is the transmission line that uses metal mesh braid layer to wrap signal line, and the braid layer is generally red copper or tin-plated copper, which can effectively filter unnecessary electromagnetic interference. However, when the shielded cable is processed, such as crimping of the terminal, the shielding net at the end needs to be cut off first. Since the shielding net is in the shape of mesh braid, how to ensure the accuracy during cutting becomes a problem to be solved.

[0003] In the prior art, a shielding net cutting device is disclosed in Chinese patent application No. CN109787070A published on May 21, 2019. After the outer insulating skin is peeled off, the end of the shielding net is expanded to a horn shape by clamping of two net expansion clamping pieces, and then a section of the shielding net is cut off by insertion of a tubular cutter.

[0004] However, the inventor found that when the shielding net is extruded and expanded, a net expansion clamping piece of one specification is only suitable for a shielding cable of one diameter size, and the applicability is poor. UTILITY MODEL CONTENTS

[0005] In view of at least one of the above technical problems, the utility model provides a shielding net extrusion mechanism, which improves the applicability of extruding the shielding net through structural improvement.

[0006] According to a first aspect of the utility model, a shielding net extrusion mechanism is provided, which comprises an outer driving disc, an inner driving disc and a plurality of clamping pieces. The outer driving disc and the inner driving disc are both annular structures, and the outer driving disc is coaxially arranged with the inner driving disc. The top of the clamping piece is towards the center position close to the inner driving disc, the middle part of the clamping piece is pivoted to the inner driving disc, and the tail part of the clamping piece is pivoted to the outer driving disc. When the outer driving disc and the inner driving disc are relatively rotated towards one direction, the tops of the plurality of clamping pieces are gathered towards the center. When the outer driving disc and the inner driving disc are relatively rotated towards the other direction, the tops of the plurality of clamping pieces are diffused away from the center.

[0007] In some embodiments of the utility model, the faces where the inner driving disc, the outer driving disc and the clamping pieces are pivoted are arranged on the same plane.

[0008] In some embodiments of the utility model, the outer driving disc is a rotating disc, and the inner driving disc is a fixed disc.

[0009] In some embodiments of the utility model, the outer driving disc has a section of tooth on the outer edge in the circumferential direction for driving the outer driving disc to rotate.

[0010] In some embodiments of the utility model, the outer driving disc has a connecting hole for rotationally connecting with the clamping piece, and the connecting hole is a groove arranged obliquely.

[0011] In some embodiments of the utility model, the clamping piece is arranged with at least three in the circumferential direction.

[0012] In some embodiments of the utility model, the clamping piece is arranged with six in the circumferential direction, so that the top of the clamping piece forms a hexagonal clamping structure.

[0013] In some embodiments of the utility model, the clamping piece sequentially comprises a straight line segment, an outer bent line segment, an inner bent line segment and a blade tip segment, the outer bent line segment is bent outwardly relative to the straight line segment, the inner bent line segment is bent inwardly relative to the outer bent line segment, and the inner side of the blade tip segment is a clamping side.

[0014] In some embodiments of the utility model, the thickness of the blade tip segment is gradually thinned in the direction close to the inner side.

[0015] The utility model discloses the beneficial effects are: the utility model discloses the tail of clamping piece is pivoted on the outer driving disc, and the middle part of clamping piece is pivoted on the inner driving disc, so that when the relative rotation of outer driving disc and inner driving disc, multiple clamping pieces close to the center, the distance of clamping changes in the process of closing, and then the clamping of the cable shielding net of various specifications is realized, compared with the prior art, improve the applicability of clamping shielding net. ACCURACY

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0017] Figure 1 It is the structural schematic view when the shielding net extrusion mechanism of the embodiment of the utility model contracts;

[0018] Figure 2 It is the structural schematic view when the shielding net extrusion mechanism of the embodiment of the utility model expands;

[0019] Figure 3 It is the front view of the shielding net extrusion mechanism of the embodiment of the utility model;

[0020] Figure 4 It is the front view of the clamping piece in the embodiment of the utility model;

[0021] Figure 5 It is the three-dimensional structure schematic view of the clamping piece in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and are not intended to be limiting.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this description and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "and / or", "at least one of", and "one or more of" as used herein refer to and encompass any one of the items in the list or combination of any of the items in the list.

[0025] As Figures 1 to 5 The shielding net extrusion mechanism shown in the figure, including outer drive disc 1, inner drive disc 2 and a plurality of clamping pieces 3, wherein: outer drive disc 1 and inner drive disc 2 are annular structure, outer drive disc 1 and inner drive disc 2 coaxial setting, the top of clamping piece 3 is close to the center position of inner drive disc 2, the middle part of clamping piece 3 is pivoted on inner drive disc 2, the tail of clamping piece 3 is pivoted on outer drive disc 1;A plurality of clamping pieces 3 are configured to rotate in one direction relative to outer drive disc 1 and inner drive disc 2, the top of a plurality of clamping pieces 3 is close to the center of the gathering, when rotating in the other direction, the top of a plurality of clamping pieces 3 is diffused in the direction away from the center.

[0026] It should be pointed out here that in some embodiments of the utility model, there are various forms when specifically driving the clamping pieces 3, it can be only driving the outer driving disc 1, it can also be only driving the inner driving disc 2, or driving the outer driving disc 1 and the inner driving disc 2 in the opposite direction synchronously, and the specific driving mode also has various forms, for example, it can be driven through a belt or a synchronous belt, or driven through a gear, etc.; when specifically clamping the shielding net, first, the cable with the shielding net exposed is stretched to the center position of the inner driving disc 2, at this time, the plurality of clamping pieces 3 are in the shape of opening, as shown in Figure 2 , then relatively rotating the outer driving disc 1 and the inner driving disc 2, so that the clamping pieces 3 relatively gather, to contact and press the shielding net, realizing the pressing expansion of the shielding net, preparing for the subsequent cutting of the shielding net.

[0027] In the above embodiment, the tail of the clamping piece 3 is pivoted on the outer driving disc 1, and the middle part of the clamping piece 3 is pivoted on the inner driving disc 2, so that when the outer driving disc 1 and the inner driving disc 2 relatively rotate, the plurality of clamping pieces 3 gather towards the center, the clamping distance changes in the gathering process, and then the clamping and expansion of the cable shielding net of various specifications are realized, compared with the prior art, the applicability of clamping the shielding net is improved.

[0028] On the basis of the above embodiment, the faces where the inner driving disc 2 and the outer driving disc 1 are pivoted with the clamping piece 3 are arranged on the same plane. Arranging on the same plane facilitates the driving of the clamping piece 3, improves the smoothness of driving the clamping piece 3, and avoids the occurrence of knife jumping between the clamping pieces 3. In some embodiments of the utility model, in order to simplify the driving mode, as shown in Figure 2 , the outer driving disc 1 is a rotating disc, and the inner driving disc 2 is a fixed disc. The outer edge of the outer driving disc 1 has a section of teeth 11 in the circumferential direction for driving the rotation of the outer driving disc 1. Through this kind of setting, only the inner driving disc 2 needs to be fixed, then a gear is driven on the outer driving disc 1 by a motor, the gear is engaged with the section of teeth 11, in this way, the rotation of the motor can drive the rotation of the outer driving disc 1 in the positive and negative directions relative to the inner driving disc 2.

[0029] In some embodiments of the utility model, in order to reduce the stress concentration of the clamping piece 3, please continue to refer to Figure 2 , the outer driving disc 1 has a connecting hole 12 rotatably connected with the clamping piece 3, and the connecting hole 12 is an inclined slot. Through the setting of the inclined slot, the clamping piece 3 can be closer to the center when gathering, so as to further improve the applicability.

[0030] It should be pointed out here that in some embodiments of the utility model, the number of clamping pieces 3 can be set by the person skilled in the art as required, and the clamping pieces 3 are arranged in at least three in the circumferential direction. The person skilled in the art can set three, four, five, six or even more as required. In some embodiments of the utility model, considering the reliability of clamping and the convenience of installation and manufacturing, the clamping pieces 3 are arranged in six in the circumferential direction, so that the top of the clamping piece 3 forms a hexagonal clamping structure. As shown in Figure 2 and Figure 3 Six clamping pieces 3 are gathered in the center to form a hexagonal shape, so that uniform clamping in the circumferential direction is realized when the shielding net is clamped, thereby improving the reliability of the shielding net expansion.

[0031] In the embodiments of the utility model, the specific structure of the clamping piece 3 is as shown in Figure 4 and Figure 5 The clamping piece 3 comprises a straight line segment 31, an outer bent line segment 32, an inner bent line segment 33 and a blade tip segment 34 in sequence, the outer bent line segment 32 is bent outward relative to the straight line segment 31, the inner bent line segment 33 is bent inward relative to the outer bent line segment 32, the blade tip segment 34 is a triangular structure, of course, it should be pointed out here that the blade tip segment 34 can also be other structure forms, and the inner side of the blade tip segment 34 is the clamping side. In the embodiments of the utility model, the bending of the outer bent line segment 32, the inner bent line segment 33 and the blade tip segment 34 forms a shape similar to half a crescent-shaped curved knife, which can make the inner side of the blade tip segment 34 close to the angle parallel to the diameter of the inner driving disc 2, thereby realizing reliable clamping; in some embodiments of the utility model, in order to further improve the clamping effect, the thickness of the blade tip segment 34 gradually thins in the direction close to the inner side. Of course, it should be pointed out here that in some embodiments of the utility model, in order to avoid that the inner side of the blade tip segment 34 cuts off the shielding net, the inner side of the blade tip segment 34 is set as a blunt knife, and through the gradually thinning setting, the contact area of the inner side with the shielding net can be reduced, and the expansion angle of the shielding net can be improved.

[0032] Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A shielding net extrusion mechanism characterized by comprising: The device comprises an outer driving disc, an inner driving disc and a plurality of clamping pieces, wherein: the outer driving disc and the inner driving disc are annular structures, the outer driving disc is coaxial with the inner driving disc, the top of the clamping piece is close to the center of the inner driving disc, the middle of the clamping piece is pivotally connected to the inner driving disc, and the tail of the clamping piece is pivotally connected to the outer driving disc; when the outer driving disc and the inner driving disc rotate in one direction, the tops of the plurality of clamping pieces gather towards the center, and when the outer driving disc and the inner driving disc rotate in the other direction, the tops of the plurality of clamping pieces spread away from the center. The outer driving disc is a rotating disc, and the inner driving disc is a fixed disc; the outer edge of the outer driving disc has a section of teeth in the circumferential direction for driving the rotation of the outer driving disc, a gear is driven by a motor, the gear is engaged with the teeth, and the rotation of the motor drives the rotation of the outer driving disc in the forward and reverse directions relative to the inner driving disc.

2. The shielding mesh extrusion mechanism of claim 1, wherein, The surfaces of the inner driving disc, the outer driving disc and the clamping pieces are arranged in the same plane.

3. The shielding mesh extrusion mechanism of claim 1, wherein, The outer driving disc has a connecting hole for rotating connection with the clamping piece, and the connecting hole is an inclined slot.

4. The shielding mesh extrusion mechanism of claim 1, wherein, The clamping pieces are arranged in at least three in the circumferential direction.

5. The shielding mesh extrusion mechanism of claim 1, wherein, The clamping pieces are arranged in six in the circumferential direction, so that the tops of the clamping pieces form a hexagonal clamping structure.

6. The shielding mesh extrusion mechanism of claim 1, wherein, The clamping piece comprises a straight line segment, an outer fold line segment, an inner fold line segment and a blade tip segment in sequence, the outer fold line segment is bent outward relative to the straight line segment, the inner fold line segment is bent inward relative to the outer fold line segment, and the inner side of the blade tip segment is a clamping side.

7. The shielding net extrusion mechanism according to claim 6, wherein The thickness of the blade tip segment gradually decreases in the direction close to the inner side.

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