CN221605095U - Rubber coating extrusion molding subassembly and extruder - Google Patents

Abstract

The application discloses an encapsulation extrusion molding assembly and an extruder, wherein the encapsulation extrusion molding assembly comprises a die holder, a diversion die core, a central shaft and a die core assembly, the die holder is provided with an encapsulation area, and the encapsulation area penetrates through the die holder; the guide mold core is arranged in the rubber coating area, the guide area is arranged on the outer side wall of the guide mold core and/or the inner side wall of the rubber coating area, the rubber feeding communication area is arranged on the side wall of the mold base, and the rubber feeding communication area is communicated with the guide area; the central shaft is arranged on the diversion mold core and is hollow along the axial direction of the central shaft; the mold core component is arranged in the rubber coating area and is positioned at one end of the central shaft inserted into the diversion mold core, the core wire penetrates through the center shaft and the mold core assembly; the inner side wall of the diversion mold core and/or the outer side wall of the center shaft are/is provided with a vacuum area, the side wall of the center shaft is provided with a vacuum communication area, and the vacuum communication area penetrates through the side wall of the center shaft and is communicated with the vacuum area and the hollow area of the center shaft. The application can be widely applied to the technical field of encapsulation molding equipment.

Description

Rubber coating extrusion molding subassembly and extruder

Technical Field

The application relates to the technical field of rubber coating forming equipment, in particular to a rubber coating extrusion forming assembly and an extruder.

Background

The coating layer on the surface of the wire is generally obtained by coating liquid silica gel on the surface of a core wire in an extrusion molding mode, the core wire passes through an extrusion die, and the liquid silica gel in the extrusion die is extruded and coated on the surface of the core wire. However, in the related art, in the wire formed by encapsulation, there are defects such as bubbles or air holes after the silica gel is solidified, which affect the quality of the wire.

Disclosure of utility model

In order to solve at least one of the technical problems, the application provides an encapsulation extrusion molding assembly and an extruder, and the adopted technical scheme is as follows.

The extruder provided by the application comprises a preheating component, an encapsulation extrusion molding component and a wire diameter detection component, wherein the preheating component comprises a heater which is used for preheating a core wire; the preheated core wire enters the rubber coating extrusion molding assembly; the wire diameter detection assembly is used for detecting the diameter of the encapsulated wire rod.

In certain embodiments of the present application, the extruder comprises a feed guide assembly, the core wire entering the preheating assembly under the guidance of the feed guide assembly; the feeding guide assembly comprises a redirecting guide wheel and at least one pair of limiting rolling elements, the limiting rolling elements are arranged between the redirecting guide wheel and the preheating assembly, and core wires pass through the limiting rolling elements arranged in pairs.

The rubber coating extrusion molding assembly comprises a die holder, a flow guiding die core, a center shaft and a die core assembly, wherein the die holder is provided with a rubber coating area, and the rubber coating area penetrates through the die holder; the guide mold core is arranged in the rubber coating area, a guide area is arranged on the outer side wall of the guide mold core and/or the inner side wall of the rubber coating area, a rubber feeding communication area is arranged on the side wall of the mold base, and the rubber feeding communication area is communicated to the guide area; the middle shaft is arranged on the diversion mold core and is hollow along the axial direction of the middle shaft; the die core assembly is arranged in the rubber coating area, the die core assembly is positioned at one end of the central shaft, which is inserted into the diversion die core, and the core wire penetrates through the central shaft and the die core assembly; the inner side wall of the diversion mold core and/or the outer side wall of the center shaft is/are provided with a vacuum area, the side wall of the center shaft is provided with a vacuum communication area, and the vacuum communication area penetrates through the side wall of the center shaft and is communicated with the vacuum area and the hollow area of the center shaft.

In some embodiments of the present application, a vacuum connection hole is provided on a side wall of the diversion mold core, and the vacuum connection hole penetrates through the side wall of the diversion mold core and is communicated with the vacuum area.

In some embodiments of the present application, the vacuum communication area is disposed near an end of the central shaft, where the guide mold core is inserted, on a side wall of the central shaft.

In some embodiments of the present application, the mold core assembly includes an inner mold core disposed at an end of the central shaft and an outer mold core disposed at an outlet of the encapsulation zone, a gap being left between the inner mold core and the outer mold core to form a cavity.

In some embodiments of the present application, the outer side wall of the inner mold core is provided with a tapered side wall, the outer mold core is provided with a concave tapered side wall, and a tapered cavity is formed between the outer side wall of the inner mold core and the inner side wall of the outer mold core.

In certain embodiments of the present application, the overmold assembly includes an adjustment member disposed at an outlet end of the overmold region, the adjustment member configured to adjust a distance between the outer mold core and the inner mold core.

In some embodiments of the present application, the encapsulation extrusion molding assembly includes an incoming wire guide die disposed at an end of the central shaft remote from the die core assembly, through which a core wire extends.

In some embodiments of the present application, a circulating water channel is disposed on a side wall of the die holder.

The embodiment of the application has at least the following beneficial effects: in the extruder, before the core wire enters the encapsulation extrusion molding assembly, the core wire is heated by a preheating assembly, and water vapor on the surface of the core wire is removed; in the encapsulation extrusion molding assembly, air on the surface of the core wire is removed by utilizing a negative pressure environment formed by a vacuum area, so that air holes or bubbles are prevented from being generated during encapsulation. The application can be widely applied to the technical field of encapsulation molding equipment.

Drawings

The described and/or additional aspects and advantages of embodiments of the present application will become apparent and readily appreciated from the following description taken in conjunction with the accompanying drawings. It should be noted that the embodiments shown in the drawings below are exemplary only and are not to be construed as limiting the application.

Fig. 1 is a structural view of an extruder.

Fig. 2 is a cross-sectional view of an encapsulated extrusion molding assembly.

Reference numerals: 1100. a die holder; 1101. a glue feeding communication area; 1200. a diversion mold core; 1201. a vacuum connection hole; 1300. a center shaft; 1301. a vacuum communication region; 1401. an inner mold core; 1402. an outer mold core; 1500. an adjusting member; 1600. a wire inlet guide die; 2000. a preheating assembly; 3000. a wire diameter detection assembly; 4100. a redirecting guide wheel; 4200. and a limit rolling piece.

Detailed Description

Embodiments of the present application are described in detail below with reference to fig. 1-2, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that, if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used as directions or positional relationships based on the directions shown in the drawings, the directions are merely for convenience of description and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present application. Features defining "first", "second" are used to distinguish feature names from special meanings, and furthermore, features defining "first", "second" may explicitly or implicitly include one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The application relates to an extruder, which is used for extruding and wrapping liquid silica gel on the outer side of a core wire, wherein the extruder comprises a preheating component 2000 and an encapsulation extrusion molding component, the preheating component 2000 is used for preheating the core wire, taking out air and water vapor on the surface of the core wire, and the preheated core wire enters the encapsulation extrusion molding component. With reference to the drawing, the preheating assembly 2000 is located above the rubber coating extrusion molding assembly, the core wire sequentially and continuously passes through the preheating assembly 2000 and the rubber coating extrusion molding assembly from top to bottom, and the liquid silica gel is uniformly wrapped on the surface of the core wire.

It will be appreciated that the preheating assembly 2000 includes a heater for preheating the core. Referring to the drawings, the preheating assembly 2000 includes a preheating tank in which a heater is disposed, the heater forming a high temperature environment in the preheating tank, and a core wire penetrating the preheating tank.

Further, the heater is provided in a ring-shaped heat generating structure, and the core wire passes through the center of the heater so that the outer periphery of the core wire is uniformly heated in the heater. Specifically, the heater is provided as a heating collar or a heating cylinder. Or alternatively designed as: the heater sets up to the hot plate, and the inside wall of preheating cabinet four sides all is provided with the hot plate.

As an embodiment, the extruder includes a feed guide assembly positioned at a feed side of the preheating assembly 2000, and the core wire enters the preheating assembly 2000 under the guide of the feed guide assembly so that the core wire can accurately enter the preheating assembly 2000.

Referring to the drawings, a feed guide assembly is positioned above the preheating assembly 2000, and includes a redirection pulley 4100 around which the core wire bypasses the redirection pulley 4100 to redirect the core wire vertically downward. It will be appreciated that the peripheral side wall of the redirect pulley 4100 is circumferentially provided with grooves.

Further, the feeding guide assembly comprises at least one pair of limit rollers 4200, wherein the limit rollers 4200 are arranged between the direction-changing guide pulley 4100 and the preheating assembly 2000, the core wire passes through the pair of limit rollers 4200, and the orientation of the core wire entering the preheating assembly 2000 is adjusted by the pair of limit rollers 4200. It will be appreciated that in the case where the limit rollers 4200 are provided in at least two pairs, each pair of limit rollers 4200 is disposed in turn from top to bottom, and the core wire passes through pair by pair.

In some examples, the axial direction of the shaft of limit roller 4200 is staggered with the axial direction of the shaft of redirect pulley 4100.

As one embodiment, the extruder includes a wire diameter detection assembly 3000, the wire diameter detection assembly 3000 being used to detect the diameter of the encapsulated wire. Referring to the drawings, the wire diameter detecting assembly 3000 is disposed below the encapsulation extrusion molding assembly.

The wire diameter detection assembly 3000 is arranged on the frame of the extruder through a sliding block and a guide rail, the sliding block is arranged on the guide rail in a sliding manner, and the guide rail is horizontally arranged, so that the wire diameter detection assembly 3000 can horizontally move to adjust the position.

Other configurations and operations of the extruder are well known to those of ordinary skill in the art and will not be described in detail herein, the structure of the over-molded extrusion assembly will be described below.

The application relates to an encapsulation extrusion molding assembly, which comprises a die holder 1100, a diversion die core 1200, a central shaft 1300 and a die core assembly, wherein the die holder 1100 is provided with an encapsulation area, the diversion die core 1200 is arranged in the encapsulation area, the central shaft 1300 is arranged on the diversion die core 1200, the central shaft 1300 is hollow along the axial direction of the central shaft 1300, the die core assembly is arranged in the encapsulation area, the die core assembly is positioned at one end of the central shaft 1300, into which the diversion die core 1200 is inserted, and a core wire penetrates through the central shaft 1300 and the die core assembly. It will be appreciated that as the core wire passes through the core assembly, the liquid silicone in the core assembly wraps around the outer side of the core wire to form a wire having an encapsulation and passes out of the core assembly.

Referring to the drawings, the encapsulation area penetrates through the die holder 1100 from top to bottom, the diversion die core 1200 is inserted into the encapsulation area, the lower end of the center shaft 1300 is inserted into the diversion die core 1200, and the die core assembly is located at the lower end of the center shaft 1300. Further, the inner side wall of the encapsulation area is provided with a conical wall, a diversion area is arranged between the outer side wall of the diversion mold core 1200 and the inner side wall of the encapsulation area, the side wall of the mold base 1100 is provided with a glue feeding communication area 1101, the glue feeding communication area 1101 is communicated to the diversion area, the glue feeding communication area 1101 is provided with a filter plate or a filter screen, and under the supply of a feeding system, liquid silica gel flows into the diversion area from the glue feeding communication area 1101 and flows to the mold core assembly from the diversion area. Specifically, a gap is left between the outer side wall of the diversion mold core 1200 and the inner side wall of the encapsulation area, the liquid silica gel flows downwards to the mold core assembly in the gap, and a sealing ring is arranged between the inner side wall of the encapsulation area and the outer side wall of the diversion mold core 1200 at the upper part of the encapsulation area.

Further, a vacuum area is formed between the inner sidewall of the guide mold core 1200 and the outer sidewall of the center shaft 1300, and the diameter of the inner sidewall of the guide mold core 1200 is larger than that of the outer sidewall of the center shaft 1300, so that the space between the inner sidewall of the guide mold core 1200 and the outer sidewall of the center shaft 1300 is formed as the vacuum area. With reference to the drawings, a vacuum communication area 1301 is provided on the side wall of the central shaft 1300, and the vacuum communication area 1301 penetrates through the side wall of the central shaft 1300 and communicates with the vacuum area and the hollow area of the central shaft 1300. The vacuum area generates negative pressure under the action of the negative pressure generator so as to suck air in the center shaft 1300 to form a vacuum environment and prevent air holes or bubbles from being formed during encapsulation.

In one embodiment, the vacuum communication area 1301 is disposed near the end of the central shaft 1300 where the diversion mold core 1200 is inserted, which is also the end of the central shaft 1300 where the mold core assembly is located, on the side wall of the central shaft 1300. In this case, vacuum communication 1301 creates a negative pressure suction to the air near the mandrel assembly to draw air clean of the mandrel surface as much as possible as the mandrel enters the mandrel assembly.

It can be appreciated that the side wall of the diversion mold core 1200 is provided with a vacuum connection hole 1201, the vacuum connection hole 1201 penetrates through the side wall of the diversion mold core 1200 and is communicated to the vacuum area, and the vacuum connection hole 1201 is connected with the negative pressure pump through a pipeline. Referring to the drawings, the vacuum connection hole 1201 is provided near the upper end of the guide mold core 1200.

Regarding the vacuum zone, there are at least the following alternatives:

in some alternative examples, the inner sidewall of the diversion core 1200 is provided with a vacuum zone. Specifically, the vacuum region recess is formed in the inner sidewall of the diversion mold core 1200.

In other alternative examples, the outer sidewall of bottom bracket 1300 is provided with a vacuum region. Specifically, a vacuum region recess is formed in the outer sidewall of bottom bracket 1300.

With respect to the supplementary explanation of the flow guiding region, the diameter of the inner sidewall of the encapsulation region is larger than the diameter of the outer sidewall of the flow guiding mold core 1200, so that the space between the inner sidewall of the encapsulation region and the outer sidewall of the flow guiding mold core 1200 is formed as the flow guiding region, and the liquid silica gel is uniformly dispersed in the flow guiding region. In another aspect, there are at least the following alternatives for the flow directing region:

In some alternative examples, the outer side wall of the flow guiding mold core 1200 is provided with a flow guiding area, specifically, a flow guiding area is concavely formed on the outer side wall of the flow guiding mold core 1200, and the flow guiding area includes a plurality of flow guiding grooves forming branches, so that the liquid silica gel is dispersed on the outer side wall of the flow guiding mold core 1200 along each flow guiding groove.

In other alternative examples, the inner side wall of the encapsulation area is provided with a diversion area, specifically, the diversion area is concavely formed on the inner side wall of the encapsulation area, and the diversion area comprises a plurality of diversion trenches forming branches, so that the liquid silica gel is dispersed on the inner side wall of the encapsulation area along each diversion trench.

As an embodiment, the mold core assembly comprises an inner mold core 1401 and an outer mold core 1402, wherein the core wire sequentially passes through the inner mold core 1401 and the outer mold core 1402, the inner mold core 1401 is arranged at the end part of the center shaft 1300, the inner mold core 1401 is in sealing connection with the center shaft 1300, the outer side wall of the inner mold core 1401 is in sealing connection with the inner side wall of the guide mold core 1200, the outer mold core 1402 is arranged at the outlet of the encapsulation area, a sealing ring is arranged between the outer side wall of the outer mold core 1402 and the inner side wall of the encapsulation area, the outer mold core 1402 corresponds to the inner mold core 1401 in position, and a gap is reserved between the inner mold core 1401 and the outer mold core 1402 to form a cavity. Specifically, the liquid silica gel gathers in cavity department from the water conservancy diversion district to when the heart yearn is worn out from external mold core 1402, the liquid silica gel wraps up in the outside of heart yearn, forms the rubber coating.

Referring to the drawings, the outer side wall of the inner mold core 1401 is provided as a tapered side wall, the outer mold core 1402 has a tapered side wall concave inward, a tapered cavity is formed between the outer side wall of the inner mold core 1401 and the inner side wall of the outer mold core 1402, and through holes are formed at the tips of the inner mold core 1401 and the outer mold core 1402 for the core wires to pass through the inner mold core 1401 and the outer mold core 1402. It will be appreciated that in the conical cavity, the liquid silicone gradually converges at the tip of the outer die core 1402.

In some examples, the inner core 1401 and outer core 1402 are replaceable to replace the inner core 1401 and outer core 1402 with multiple apertures to accommodate cores of different wire diameters.

As one embodiment, the distance of the outer mold core 1402 relative to the inner mold core 1401 is adjustable to adjust the size of the cavity between the outer mold core 1402 and the inner mold core 1401. Specifically, the encapsulation extrusion molding assembly includes an adjusting member 1500, and in combination with the accompanying drawings, an outlet end of an encapsulation area is disposed on an outer side wall of the die holder 1100, the outlet end is located on a lower side wall of the die holder 1100, the adjusting member 1500 is disposed on the outlet end, the adjusting member 1500 is in threaded connection with a side wall of the outlet end, and the adjusting member 1500 is used for adjusting a distance between the outer die core 1402 and the inner die core 1401.

In some examples, the inner side wall of the adjusting member 1500 is provided with an internal thread, the outer side wall of the outlet end is provided with an external thread, and the inner side wall of the adjusting member 1500 is provided with a limiting portion protruding from the inner side wall of the adjusting member 1500, the limiting portion is provided as an annular structure, the limiting portion abuts against the outer mold core 1402 located at the outlet end, the adjusting member 1500 is rotated, and the height of the adjusting member 1500 at the bottom of the mold holder 1100 is adjustable, so that the distance between the outer mold core 1402 and the inner mold core 1401 is adjusted by the limiting portion abutting against the outer mold core 1402.

In some alternative examples, the outer sidewall of the regulator 1500 is provided with external threads, the inner sidewall of the outlet end is provided with internal threads, and the top of the regulator 1500 abuts the outer die core 1402.

As an implementation manner, the encapsulation extrusion molding assembly comprises a wire inlet guide die 1600, the wire inlet guide die 1600 is arranged at one end, far away from the die core assembly, of the center shaft 1300, the core wire penetrates through the wire inlet guide die 1600, and the core wire is centered in the center shaft 1300 and is positioned at the center axis of the inner cavity of the center shaft 1300 under the action of the wire inlet guide die 1600. Further, a sealing ring is arranged between the outer side wall of the wire inlet guide die 1600 and the inner side wall of the center shaft 1300.

Further, the wire inlet guide die 1600 can be detached and replaced to replace the wire inlet guide die 1600 with different apertures, and the wire inlet guide die is adapted to core wires with different wire diameters.

As an embodiment, a circulation waterway is provided on a side wall of the mold base 1100, and is connected with a water pipe, and hot water is introduced into the circulation waterway to insulate the mold base 1100 and prevent the silica gel from solidifying in the mold base 1100.

In the description of the present specification, if a description appears that makes reference to the term "one embodiment," "some examples," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., it is intended that the particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.

In the description of the present application, the terms "and" if used in the singular are intended to mean "and" as opposed to "or". For example, the patent name "a A, B" describes that what is claimed in the present application is: a technical scheme with a subject name A and a technical scheme with a subject name B.

Claims (10)

1. An encapsulated extrusion molding assembly, characterized in that: comprising

The die holder (1100) is provided with an encapsulation area, and the encapsulation area penetrates through the die holder (1100);

the die comprises a guide die core (1200), wherein the guide die core (1200) is arranged in the encapsulation area, a guide area is arranged on the outer side wall of the guide die core (1200) and/or the inner side wall of the encapsulation area, a glue inlet communication area (1101) is arranged on the side wall of the die holder (1100), and the glue inlet communication area (1101) is communicated to the guide area;

The middle shaft (1300) is arranged on the diversion mold core (1200), and the middle shaft (1300) is hollow along the axial direction of the middle shaft (1300);

The mold core assembly is arranged in the encapsulation area, the mold core assembly is positioned at one end of the center shaft (1300) inserted into the diversion mold core (1200), and a core wire penetrates through the center shaft (1300) and the mold core assembly;

The inner side wall of the diversion mold core (1200) and/or the outer side wall of the center shaft (1300) is/are formed with a vacuum area, the side wall of the center shaft (1300) is provided with a vacuum communication area (1301), and the vacuum communication area (1301) penetrates through the side wall of the center shaft (1300) and is communicated with the vacuum area and the hollow area of the center shaft (1300).

2. The overmolded assembly of claim 1 wherein: the side wall of the flow guide mold core (1200) is provided with a vacuum connecting hole (1201), and the vacuum connecting hole (1201) penetrates through the side wall of the flow guide mold core (1200) and is communicated to the vacuum area.

3. The overmolded assembly according to claim 1 or 2, characterized in that: and the vacuum communication area (1301) is arranged at one end, close to the middle shaft (1300), of the guide mold core (1200) inserted into the middle shaft (1300).

4. The overmolded assembly of claim 1 wherein: the mold core assembly comprises an inner mold core (1401) and an outer mold core (1402), wherein the inner mold core (1401) is arranged at the end part of the center shaft (1300), the outer mold core (1402) is arranged at the outlet of the encapsulation area, and a gap is reserved between the inner mold core (1401) and the outer mold core (1402) to form a cavity.

5. The overmolded assembly of claim 4 wherein: the outer side wall of the inner mold core (1401) is provided with a conical side wall, the outer mold core (1402) is provided with a concave conical side wall, and a conical cavity is formed between the outer side wall of the inner mold core (1401) and the inner side wall of the outer mold core (1402).

6. The overmolded assembly of claim 4 or 5 wherein: the encapsulation extrusion molding assembly comprises an adjusting piece (1500), wherein the adjusting piece (1500) is arranged at the outlet end of the encapsulation area, and the adjusting piece (1500) is used for adjusting the distance between the outer die core (1402) and the inner die core (1401).

7. The overmolded assembly of claim 1 wherein: the rubber coating extrusion molding assembly comprises an incoming wire guide die (1600), the incoming wire guide die (1600) is arranged at one end, far away from the die core assembly, of the center shaft (1300), and a core wire penetrates through the incoming wire guide die (1600).

8. The overmolded assembly of claim 1 wherein: the side wall of the die holder (1100) is provided with a circulating waterway.

9. An extruder, characterized in that: comprising

A preheating assembly (2000), the preheating assembly (2000) comprising a heater for preheating the core;

The overmolded assembly of any of claims 1 to 8 wherein the preheated core wire enters the overmolded assembly;

And the wire diameter detection assembly (3000) is used for detecting the diameter of the encapsulated wire rod.

10. The extruder of claim 9 wherein: the extruder comprises a feeding guide assembly, and a core wire enters the preheating assembly (2000) under the guide of the feeding guide assembly; the feeding guide assembly comprises a redirecting guide wheel (4100) and at least one pair of limit rolling elements (4200), wherein the limit rolling elements (4200) are arranged between the redirecting guide wheel (4100) and the preheating assembly (2000), and core wires pass through the space between the limit rolling elements (4200) arranged in pairs.