阅读说明：本技术 间色可分离型异形电缆挤塑外模套 (Extrusion molding outer die sleeve for special-shaped cable with separable secondary colors ) 是由 吴迪 侯凤 樊子谦 胡贵宝 蔺海峰 高波 李玉凯 阎思语 周法庭 于 2021-09-30 设计创作，主要内容包括：本申请公开了一种间色可分离型异形电缆挤塑外模套,包括：模套主体,内具有外模腔；出料单元,包括出料主体,出料主体上设有若干模套廊,相邻模套廊之间具有连接通道,连接通道的一侧具有向内突出的凸起部；间色环道槽,呈环形设于模套主体的外表面；引流槽,具有引流槽入口和引流槽出口,引流槽入口位于间色环道槽的内壁上,引流槽出口位于模套廊的内壁上,间色环道槽、引流槽、模套廊连通；其中,模套廊具有进料口,引流槽出口远离进料口；通过在模套主体的外表面设置间色环道槽,将引流槽与间色环道槽、模套廊连通,使得模套在调整偏心时可以360°旋转,而间色胶料始终位于间色环道槽内,保证了模具的生产效率。(The application discloses secondary color detachable type dysmorphism cable extrusion molding outer die sleeve, include: the die sleeve main body is internally provided with an outer die cavity; the discharging unit comprises a discharging main body, a plurality of die sleeve galleries are arranged on the discharging main body, a connecting channel is arranged between every two adjacent die sleeve galleries, and a protruding part protruding inwards is arranged on one side of the connecting channel; the intermediate color ring channel groove is annularly arranged on the outer surface of the die sleeve main body; the drainage groove is provided with a drainage groove inlet and a drainage groove outlet, the drainage groove inlet is positioned on the inner wall of the metachromatic ring groove, the drainage groove outlet is positioned on the inner wall of the die sleeve gallery, and the metachromatic ring groove, the drainage groove and the die sleeve gallery are communicated; wherein, the die sleeve gallery is provided with a feed inlet, and the outlet of the drainage groove is far away from the feed inlet; through setting up the intercolor ring way groove at the surface of die sleeve main part, with drainage groove and intercolor ring way groove, die sleeve corridor intercommunication for the die sleeve can 360 rotations when the adjustment is eccentric, and the intercolor sizing material is located the intercolor ring way inslot all the time, has guaranteed the production efficiency of mould.)

1. The utility model provides a secondary color detachable type dysmorphism cable extrusion molding outer die sleeve which characterized in that includes:

the die sleeve main body is internally provided with an external die cavity with one open end;

the discharging unit comprises a discharging main body, the discharging main body is connected with the die sleeve main body, a plurality of die sleeve galleries are arranged on the discharging main body, a connecting channel is arranged between every two adjacent die sleeve galleries, one side of the connecting channel is provided with a bulge part protruding inwards, and the die sleeve galleries and the connecting channel penetrate through the discharging main body and are communicated with the outer die cavity;

the intermediate color ring channel groove is annularly arranged on the outer surface of the die sleeve main body;

the drainage groove is provided with a drainage groove inlet and a drainage groove outlet, the drainage groove inlet is positioned on the inner wall of the metachromatic ring groove, the drainage groove outlet is positioned on the inner wall of the die sleeve gallery, and the metachromatic ring groove, the drainage groove and the die sleeve gallery are communicated; wherein, the die sleeve corridor has a feed inlet, the drainage groove export is kept away from the feed inlet.

2. The extrusion molding outer die sleeve of the secondary color separable special-shaped cable as claimed in claim 1, wherein the front end face of the discharging body is further provided with an inward recessed rotary positioning hole.

3. The extrusion-molded outer die sleeve of a secondary color separable type special-shaped cable according to claim 1, wherein the cross section of the protrusion is triangular.

4. The extruded external mold for a secondary color separable profile cable of claim 1, wherein the mold chase lanes are cylindrical.

5. The extrusion molding outer die sleeve of the secondary color separable special-shaped cable as claimed in claim 4, wherein the outlet of the drainage groove is arc-shaped.

6. The extrusion-molded outer die sleeve for secondary color separable special-shaped cables as claimed in claim 1, wherein the die sleeve body and the outer die cavity are both in a circular truncated cone shape, and the outer diameters of the die sleeve body and the outer die cavity decrease from the opening to the discharging unit.

Technical Field

The application relates to the technical field of cable manufacturing equipment, in particular to an extrusion molding outer die sleeve of a secondary color separable type special-shaped cable.

Background

It is necessary to design a two-core (8-shaped) or multi-core separable cable, in which one core is required to have secondary color lines. In order to realize the production of secondary colors, the original mold design is that a drainage groove is arranged at a position right above a mold sleeve (corresponding to a secondary color extruding machine above a machine head), secondary color rubber materials are drained into main color rubber materials through the drainage groove and are extruded together with the main color rubber materials through a mold sleeve gallery to form secondary color strips.

However, this solution has two disadvantages: (1) when the eccentric adjustment of an extrusion molding die of a special-shaped (non-circular) cable is carried out, not only the die sleeve needs to be adjusted up and down, left and right, but also the mode of rotating the die sleeve is sometimes needed, and once the original die sleeve is rotated, the material injection position of the secondary color extruder deviates from the notch, so that secondary color sizing material cannot be extruded normally; (2) the drainage groove of original die sleeve is direct top-down leading-in to die sleeve corridor inboard, and the exit makes the secondary color sizing material mix the back with the primary color sizing material earlier, extrudes through the die sleeve corridor again, and the width and the position of secondary color strip can receive the influence and the change of secondary color machine and host computer sizing material pressure, lead to the width, proportion and the position of unable accurate regulation secondary color strip, and the waste secondary color sizing material more of this mode, often because extrude that pressure control mismatch causes the secondary color to disappear or the too dark.

In addition, to realize the separation of two cores (or multiple cores), the original mold is to reduce the width of the joint of the two cores (or multiple cores), and the joint is cut open by a blade during the actual separation and torn along the opening direction. However, this solution has three drawbacks: (1) if the connecting part is narrow, the connection is unstable, the appearance is poor and the like easily occur in the production process, and if the connecting part is wide, the connecting part is not easy to tear; (2) before tearing, a blade is needed to cut an opening of more than 10cm, and then the opening is torn by hands, so that the operation is complicated and labor-consuming, and danger exists; (3) the risk of deckle edges, irregularity and even damage to the cable core exists during tearing. Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

The application provides a secondary color detachable type dysmorphism cable extrusion molding outer die sleeve can overcome prior art's not enough. The application provides the following technical scheme:

the utility model provides a secondary color detachable type dysmorphism cable extrusion molding outer die sleeve, includes:

the die sleeve main body is internally provided with an external die cavity with one open end;

the discharging unit comprises a discharging main body, the discharging main body is connected with the die sleeve main body, a plurality of die sleeve galleries are arranged on the discharging main body, a connecting channel is arranged between every two adjacent die sleeve galleries, one side of the connecting channel is provided with a bulge part protruding inwards, and the die sleeve galleries and the connecting channel penetrate through the discharging main body and are communicated with the outer die cavity;

the intermediate color ring channel groove is annularly arranged on the outer surface of the die sleeve main body;

the drainage groove is provided with a drainage groove inlet and a drainage groove outlet, the drainage groove inlet is positioned on the inner wall of the metachromatic ring groove, the drainage groove outlet is positioned on the inner wall of the die sleeve gallery, and the metachromatic ring groove, the drainage groove and the die sleeve gallery are communicated; wherein, the die sleeve corridor has a feed inlet, the drainage groove export is kept away from the feed inlet.

Optionally, the front end surface of the discharging main body is further provided with an inward-recessed rotary positioning hole.

Optionally, the cross-section of the boss is triangular.

Optionally, the die sleeve gallery is cylindrical.

Optionally, the drainage groove outlet is arcuate.

Optionally, the die sleeve main body and the outer die cavity are both in a circular truncated cone shape, and the outer diameters of the die sleeve main body and the outer die cavity decrease progressively from the opening to the discharging unit.

The application has the following beneficial effects:

1. through setting up the intercolor ring channel groove at the surface of die sleeve main part, with drainage groove and intercolor ring channel groove, die sleeve corridor intercommunication for the die sleeve can 360 rotations when the adjustment is eccentric, and the intercolor sizing material is located the intercolor ring channel inslot all the time, and the production efficiency of mould has been guaranteed in rethread drainage groove extrusion.

2. The position of keeping away from the feed inlet with the export setting of drainage groove at die sleeve corridor inner wall for all there is certain length's die sleeve corridor around the drainage groove exports, so extrude the back at the die sleeve corridor of dominant colour sizing material through drainage groove the place ahead, will intermingle the look sizing material through the drainage groove and extrude dominant colour sizing material surface, make between look thickness more even controllable, practiced thrift between look sizing material.

3. The convex parts protruding inwards are arranged on the connecting channel, so that grooves are formed in the connecting positions between the adjacent cable cores, tearing is facilitated, the edges of tearing openings are neat, uniform and symmetrical, and the cable cores on two sides are not damaged.

The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

Drawings

FIG. 1 is a schematic side view of an extruded outer jacket of a secondary color separable profiled cable provided in an embodiment of the present application;

FIG. 2 is a side perspective view of an extruded outer jacket of a secondary color separable profiled cable provided in an embodiment of the present application;

FIG. 3 is a schematic front view of an extruded outer jacket of a secondary color separable profiled cable according to an embodiment of the present application;

fig. 4 is a rear schematic view of an extruded outer jacket of a secondary color separable profiled cable according to an embodiment of the present application.

Wherein: 100-secondary color separable special-shaped cable extrusion molding outer die sleeve, 1-die sleeve main body, 11-outer die cavity, 111-opening, 2-discharging unit, 21-discharging main body, 22-die sleeve gallery, 221-feeding hole, 23-connecting channel, 231-bulge, 24-rotary positioning hole, 3-secondary color ring channel groove, 4-drainage groove, 41-drainage groove inlet and 42-drainage groove outlet.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. 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. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1 to 4, a preferred embodiment of the present application provides a secondary color separable profiled cable extrusion outer mold 100, wherein the outer mold 100 at least includes a mold body 1, a discharging unit 2, a secondary color loop groove 3 and a drainage groove 4. The die sleeve body 1 has an outer cavity 11 with an opening 111 at one end, and the outer cavity 11 is used for accommodating a die core (not shown). In the present embodiment, the die sleeve body 1 and the outer die cavity 11 are both in a truncated cone shape, and the outer diameters of the die sleeve body 1 and the outer die cavity 11 decrease from the opening 111 to the discharging unit 2. Of course, in other embodiments, the shapes of the die sleeve body 1 and the outer die cavity 11 may be other, such as a cylindrical shape or an irregular shape, which is not limited in this application.

In the production of the conventional secondary color cable, a drainage groove is formed in a position right above a die sleeve (corresponding to a secondary color plastic extruding machine), secondary color rubber is drained into primary color rubber through the drainage groove and extruded together with the primary color rubber through a die sleeve gallery to form a secondary color strip. If the cable is a special-shaped cable, when the extrusion molding die needs to adjust eccentricity and the die sleeve is rotated, as only one position on the original die sleeve is grooved, once the original die sleeve is rotated, the material injection position of the secondary color extruding machine deviates from the groove opening, and secondary color sizing materials cannot be extruded normally. To solve this problem, in one embodiment, a halftone annular groove 3 is provided on the outer surface of the die case body 1 near the discharging unit 2, such that the halftone annular groove 3 is annularly provided on the outer surface of the die case body 1. In practical production, the intermediate color circular channel 3 is connected with a material injection position of an intermediate color extruding machine (not shown in the figure), and the intermediate color rubber is extruded into the intermediate color circular channel 3 from the material injection position, so that when the die sleeve 100 rotates, the material injection position of the intermediate color extruding machine is constantly positioned in the intermediate color circular channel 3, and the 100360-degree rotation of the die sleeve is ensured without influencing the extrusion of the intermediate color strips.

In addition, by adding the secondary color circular channel grooves 3, the pressure of the secondary color sizing material is more uniform when the secondary color sizing material is injected into the drainage grooves 4, and the uniformity of the secondary color strips is ensured.

The discharging unit 2 comprises a discharging main body 21, the discharging main body 21 is located at the front end of the die sleeve main body 1 and connected with the die sleeve main body 1, and the primary color rubber material is extruded out of the discharging main body 21 through the outer die cavity 11 of the die sleeve main body 1 and the secondary color rubber material through the secondary color ring groove 3 and the drainage groove 4 to form the secondary color cable. Specifically, be equipped with a plurality of die sleeve galleries 22 on ejection of compact main part 21, die sleeve gallery 22 runs through ejection of compact main part 21 and communicates with external mold cavity 11, and meanwhile, die sleeve gallery 22 still communicates with drainage groove 4 and intercolor ring way groove 3, and the owner look sizing material is extruded from die sleeve gallery 22 with the intercolor sizing material. Alternatively, the number of the die case lanes 22 is not limited to two, and may be two or more. When the number of the die sleeve lanes 22 is two, the secondary color cable is a two-core cable; when the number of the die sleeve lanes 22 is more than two, the secondary color cable is a multi-core cable. In this embodiment, the die chase lane 22 is cylindrical, which allows for more uniform extrusion of the gum material from within the die chase lane 22.

And a connecting channel 23 is arranged between the adjacent die sleeve galleries 22, and after production is finished, the adjacent cable cores need to be torn according to actual requirements. In order to tear the adjacent cable cores conveniently, the width of a connecting neck between the adjacent cable cores is reduced, the connecting neck is scratched by a blade during actual separation, and the connecting neck is torn along the opening direction. However, the above-described method has the following drawbacks: (1) if the width of the connecting neck is narrow, the connection is unstable, and the appearance is poor easily in the production process; if the width of the connecting neck is wide, the connecting neck is not easy to tear; (2) before tearing, a blade is needed to cut an opening of more than 10cm, and then the opening is torn by hands, so that the operation is complicated and labor-consuming, and danger exists; (3) when the cable is torn, the risk of burrs, irregularity and even damage to the cable core can exist. In order to solve the above-mentioned defects, in one embodiment, an inwardly protruding protrusion 231 is disposed on one side of the connection channel 23, the connection channel 23 penetrates through the discharging body 21 and is communicated with the outer mold cavity 11, and correspondingly, an inwardly recessed groove is formed on the formed connection neck, so that the cable can be easily torn only by tearing the cable at the groove.

Alternatively, in order to enable easier tearing of the cable, in one embodiment, the cross-section of the protrusion 231 is provided in a triangular shape.

Drainage groove 4 has drainage groove entry 41 and drainage groove export 42, and drainage groove entry 41 is located between on the inner wall of look ring groove 3, and drainage groove export 42 is located die sleeve corridor 22's inner wall, and between look ring groove 3, drainage groove 4, die sleeve corridor 22 intercommunication for will be between look sizing material from between look ring groove 3, through drainage groove 4, finally extrude in die sleeve corridor 22. The drainage groove outlets 42 are arcuately disposed on the inner wall of the die sleeve gallery 22. In this embodiment, the width of drainage groove outlet 42 can specifically set up according to specific needs, and the width broad of drainage groove outlet 42 corresponds, and the width of secondary color stripe will be broad, and the width of drainage groove outlet 42 is narrower, and the width of secondary color stripe will be narrower correspondingly. In addition, the position of the drainage groove outlet 42 is not unique, and can be specifically set according to specific requirements, and the application does not limit the position.

In order to ensure that the secondary color sizing material and the primary color sizing material cannot be mixed, the qualification rate of products is improved, and the width and the thickness of the secondary color strip are controlled more accurately, in one embodiment, the die sleeve gallery 22 is provided with a feed port 221, and the drainage groove outlet 42 is arranged at a position far away from the feed port 221, so that the die sleeve gallery 22 with a certain length is arranged at the front and the rear of the drainage groove outlet 42, and then after the primary color sizing material is extruded through the die sleeve gallery 22 in front of the drainage groove outlet 42, the secondary color sizing material is extruded to the surface thin layer of the primary color sizing material through the drainage groove outlet 42.

The traditional method for adjusting the die sleeve and the core deviation of the die core can only be noticed by rotating the die core or during installation, but cannot rotate the die sleeve, so that the adjustment process of the core deviation is redundant and tedious. In this embodiment, the inwardly recessed rotary positioning hole 24 is formed in the front end surface of the discharging main body 21, so that the die case 100 can be easily rotated only by clamping a tool in the rotary positioning hole 24 when the core deviation is adjusted, thereby adjusting the core deviation. In the present embodiment, the number of the rotation positioning holes 24 is set to two.

In summary, the present application has the following beneficial effects:

1. through setting up the intercolor ring channel groove at the surface of die sleeve main part, with drainage groove and intercolor ring channel groove, die sleeve corridor intercommunication for the die sleeve can 360 rotations when the adjustment is eccentric, and the intercolor sizing material is located the intercolor ring channel inslot all the time, and the production efficiency of mould has been guaranteed in rethread drainage groove extrusion.

2. The position of keeping away from the feed inlet with the export setting of drainage groove at die sleeve corridor inner wall for all there is certain length's die sleeve corridor around the drainage groove exports, so extrude the back at the die sleeve corridor of dominant colour sizing material through drainage groove the place ahead, will intermingle the look sizing material through the drainage groove and extrude dominant colour sizing material surface, make between look thickness more even controllable, practiced thrift between look sizing material.

3. The convex parts protruding inwards are arranged on the connecting channel, so that grooves are formed in the connecting positions between the adjacent cable cores, tearing is facilitated, the edges of tearing openings are neat, uniform and symmetrical, and the cable cores on two sides are not damaged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.