Shunt for three-layer co-extrusion wire production
By designing a three-layer co-extrusion production wire splitter, the time and material waste of frequent color change in cable production is solved, efficient and accurate color change and uniform extrusion are achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202421644940.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-11
AI Technical Summary
During the production process of cable extrusion, the main color or color bar needs to be frequently replaced. Traditional methods require the production line to be suspended, the machine head is manually cleaned and debugged, resulting in wasted time and raw materials, and increasing production costs.
A three-layer co-extrusion production wire splitter is designed, including the main body parts of the shunt, a die sleeve, a two-core equalized pressure split sleeve and an inner die core seat. Through the design of the glue injection runner and inclination angle interface, the uniform flow of raw materials and the equalized pressure of the extrusion pressure are achieved, thereby achieving efficient and accurate color change.
The uniform extrusion of the wire surface is achieved, which reduces waste in the production process, improves production efficiency, reduces production costs, and can achieve rapid color change without stopping within a shorter than 10 meters.
Smart Images
Figure CN223013850U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of producing electric wires, in particular to a shunt for producing electric wires with three layers of co-extrusion. Background Art
[0002] Cable is a general term for optical cables, electrical cables and other items. Cables have many uses, mainly used for control installation, connecting equipment, transmitting electricity and other multiple functions. They are common and indispensable in daily life. As the main medium for transmitting information and energy, the importance of cables is self-evident.
[0003] When factories are producing cables through extrusion, they often need to change the main color or color strip. The traditional method is to stop the production line, manually clean the die head, and then restart the machine for debugging / production. This not only takes a long time to adjust the die head and masterbatch, but also wastes a lot of raw materials. Each link also increases labor, which invisibly increases production costs. Therefore, in the cable production process, how to achieve color change efficiently and accurately has always been a problem that plagues companies. Utility Model Content
[0004] The utility model aims to provide a shunt for producing electric wires by three-layer co-extrusion, so as to realize efficient and accurate color change.
[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a three-layer co-extruded shunt for producing electric wires, including a shunt main body component, the interior of the shunt main body component is sequentially sleeved with a mold sleeve seat, a two-core pressure-equalizing shunt sleeve, and an inner mold core seat from the left end to the right end, a mold sleeve is arranged inside the mold sleeve seat, and an inner mold core is sleeved inside the mold sleeve seat, the two-core pressure-equalizing shunt sleeve, and the inner mold core seat; the shunt main body component is provided with three glue injection channels.
[0006] Furthermore, the centers of two of the three glue injection channels are located in the same plane as the center of the diverter main body component, and the other glue injection channel is connected to the glue injection port of the middle insulating layer.
[0007] Furthermore, the two injection channels are in the same plane as the center of the diverter main body component, one of which is arranged in the gap between the two-core pressure equalizing diverter sleeve and the mold sleeve seat, and the other is arranged in the gap between the two-core pressure equalizing diverter sleeve and the inner mold core seat.
[0008] Furthermore, the glue injection channel arranged in the gap between the two-core pressure-equalizing shunt sleeve and the inner mold core seat is connected to the glue injection port of the inner insulating layer, and the glue injection channel arranged in the gap between the two-core pressure-equalizing shunt sleeve and the mold sleeve seat is connected to the glue injection port of the outer insulating layer.
[0009] Further, the glue injection runner inlet connected to the glue injection port of the intermediate insulating layer is the intermediate insulating layer inlet, and the intermediate insulating layer inlet is set as a crescent-shaped inlet. At the same time, the two-core voltage equalizing and flow dividing sleeve and the intermediate insulating layer glue injection runner connected to the intermediate insulating layer inlet are provided with annular round chamfers.
[0010] Further, the diverter further includes a diverter sleeve rotating gear and a diverter sleeve linear gear.
[0011] Further, the diverter sleeve rotating gear is connected to the right end of the diverter main body component, the diverter sleeve linear gear is connected to the diverter sleeve rotating gear, and when the diverter sleeve linear gear moves, it drives the diverter sleeve rotating gear to move, and then the diverter sleeve rotating gear drives the diverter main body component to rotate.
[0012] Further, the contact interfaces of the die sleeve, die sleeve seat with the inner die core and the two-core voltage equalizing and flow dividing sleeve are inclined angles, the contact interface of the inner die core and the die sleeve is an inclined angle, the contact interfaces of the two-core voltage equalizing and flow dividing sleeve with the die sleeve, die sleeve seat and inner die core seat are inclined angles, and the contact interface of the inner die core seat and the two-core voltage equalizing and flow dividing sleeve is an inclined angle. The angle of the inclined angle is inclined 10 - 15° with respect to the vertical plane.
[0013] Further, the angle of the inclined angle is inclined 12.4° with respect to the vertical plane.
[0014] Further, the contact interfaces of the die sleeve, die sleeve seat with the inner die core and the two-core voltage equalizing and flow dividing sleeve and the contact interfaces of the two-core voltage equalizing and flow dividing sleeve with the inner die core and inner die core seat are provided with an interface gap of 0.05 - 0.1 mm.
[0015] In summary, the device structure of the present utility model is reasonably designed. By applying the technical solution of the present utility model, the following beneficial effects are achieved: The diverter main body component is provided with three glue injection runners. At the same time, a die sleeve seat, a two-core voltage equalizing and flow dividing sleeve, and an inner die core seat are sequentially sleeved inside the diverter main body component from the left end to the right end. A die sleeve is arranged inside the die sleeve seat, and an inner die core is sleeved inside the die sleeve seat, two-core voltage equalizing and flow dividing sleeve, and inner die core seat. Through the gap design between the components, the uniform flow of raw materials during the extrusion process is realized, making the surface of the extruded wire uniform, and at the same time, the extrusion pressure is equalized, so as to realize the uniform distribution of the three-color skin and the inner layer insulation during the three-layer co-extrusion process. Brief Description of the Drawings
[0016] Figure 1 is a schematic cross-sectional structure diagram of the diverter for producing wires of the present utility model;
[0017] Figure 2 is an exploded structure diagram of the diverter for producing wires of the present utility model;
[0018] Figure 3 It is a schematic structural diagram of the annular round chamfer of the present utility model;
[0019] Explanation of the reference numerals in the drawings: 1 - shunt main body component; 2 - die sleeve seat; 3 - die sleeve; 4 - two-core voltage equalizing shunt sleeve; 5 - inner die core; 6 - inner die core seat; 7 - glue injection port for the inner insulating layer; 8 - glue injection port for the middle insulating layer; 9 - confluence port for the middle insulating layer; 10 - glue injection port for the outer insulating layer; 11 - rotating gear teeth of the shunt sleeve; 12 - linear gear of the shunt sleeve. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model, but it does not constitute a limitation to the protection scope of the present utility model.
[0021] In the present utility model, for a clearer description, the following is stated: When the observer observes facing the attached Figure 1 drawing, the front left side of the observer is set as the front, the rear right side of the observer is set as the rear, the left rear side of the observer is set as the left, the right front side of the observer is set as the right, the upper side of the observer is set as the upper, and the lower side of the observer is set as the lower. It should be noted that the terms "front end", "rear end", "left side", "right side", "middle part", "upper side", "lower side", etc. in the text indicate the orientation or positional relationship based on the orientation or positional relationship set by the attached drawing, and are only for the purpose of clearly describing the present utility model, rather than indicating or implying that the indicated structure or component parts must have a specific orientation and be constructed in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", "fourth" are only used for the purpose of clear or simplified description, and cannot be understood as indicating or implying relative importance or quantity.
[0022] See Figures 1 - 3 , the present utility model provides a shunt for three-layer co-extrusion production of wires, including a shunt main body component 1. Inside the shunt main body component 1, a die sleeve seat 2, a two-core voltage equalizing shunt sleeve 4, and an inner die core seat 6 are sequentially sleeved from the left end to the right end. Inside the die sleeve seat 2, there is a die sleeve 3, and an inner die core 5 is sleeved inside the die sleeve seat 2, the two-core voltage equalizing shunt sleeve 4, and the inner die core seat 6; the shunt main body component 1 is provided with three glue injection channels.
[0023] Specifically, the centers of two of the three glue injection channels are in the same plane as the center of the shunt main body component 1, and the other glue injection channel is connected to the glue injection port 8 for the middle insulating layer; for the two glue injection channels that are in the same plane as the center of the shunt main body component 1, one glue injection channel is arranged in the gap between the two-core voltage equalizing shunt sleeve 4 and the die sleeve seat 2, and the other glue injection channel is arranged in the gap between the two-core voltage equalizing shunt sleeve 4 and the inner die core seat 6.
[0024] Specifically, the glue injection runner disposed in the gap between the two-core voltage-sharing shunt sleeve 4 and the inner die core seat 6 is connected to the glue injection port 7 of the inner insulating layer, and the glue injection runner disposed in the gap between the two-core voltage-sharing shunt sleeve 4 and the die sleeve seat 2 is connected to the glue injection port 10 of the outer insulating layer.
[0025] As a preferred embodiment of the present utility model, the glue injection runner convergence inlet connected to the glue injection port 8 of the middle insulating layer is the middle insulating layer convergence inlet 9. The middle insulating layer convergence inlet 9 is set as a crescent-shaped convergence inlet, and the crescent-shaped convergence inlet is distributed at the two-core voltage-sharing shunt sleeve 4. At the same time, the two-core voltage-sharing shunt sleeve 4 and the middle insulating layer glue injection runner connected to the middle insulating layer convergence inlet 9 are provided with an annular round chamfer.
[0026] See Figure 1 、 Figure 3 , the mark R is the place where the annular round chamfer is provided. Through the design of providing the annular round chamfer R on the two-core voltage-sharing shunt sleeve 4 and the middle insulating layer glue injection runner connected to the middle insulating layer convergence inlet 9, the extrusion pressure equalization of the raw materials during the production extrusion process is realized, so as to realize the uniform distribution of the outer color skin and the inner insulating layer during the three-layer co-extrusion process. This is the equalization device setting of the present utility model.
[0027] As a preferred embodiment of the present utility model, the diverter further includes a diverter sleeve rotating gear 11 and a diverter sleeve linear gear 12; the diverter sleeve rotating gear 11 is connected to the right end of the diverter main body component 1, the diverter sleeve linear gear 12 is connected to the diverter sleeve rotating gear 11, and when the diverter sleeve linear gear 12 moves linearly, it drives the diverter sleeve rotating gear 11 to move, and then the diverter sleeve rotating gear 11 drives the diverter main body component 1 to rotate.
[0028] When the diverter main body component 1 rotates, the positions of the glue injection runners located in the diverter main body component 1 will also rotate and change accordingly. Because there are two centers of the glue injection runners in the glue injection runner and they are in a plane with the center of the diverter main body component 1, when the diverter main body component 1 rotates, the positions of these two glue injection runners can be interchanged by rotation, so that the online switching of the outer color skin and the inner color skin can be realized.
[0029] As a preferred embodiment of the present utility model, the contact interfaces between the die sleeve 3, the die sleeve seat 2 and the inner die core 5, the two-core voltage-sharing shunt sleeve 4 are inclined angles. The contact interface between the inner die core 5 and the die sleeve 3 is an inclined angle. The contact interfaces between the two-core voltage-sharing shunt sleeve 4 and the die sleeve 3, the die sleeve seat 2, the inner die core seat 6 are inclined angles. The contact interface between the inner die core seat 6 and the two-core voltage-sharing shunt sleeve 4 is an inclined angle, and the inclined angle is 12.4° inclined to the vertical plane.
[0030] The setting of this contact interface as an inclined angle is designed along the taper angle line, and the self-centering without adjustment is realized through an inclination of 12.4° to the vertical plane.
[0031] Specifically, the contact interface between the mold sleeve 3, the mold sleeve seat 2 and the inner mold core 5, the two-core equalizing and diverting sleeve 4, and the contact interface between the two-core equalizing and diverting sleeve 4 and the inner mold core 5, the inner mold core seat 6 is set to have a gap of 0.05-0.1mm. Considering the change of the object due to thermal expansion and contraction, the gap between the interfaces is reserved, and the contact of the interface is set to a material with a thermal expansion coefficient of 1.2*10-5 / ℃.
[0032] When in use, the utility model improves the original screw structure for adjusting the eccentricity of the machine head, uses the taper for self-centering, and realizes the function of eccentricity adjustment-free during wire production. The installation position of each component is reasonably and accurately positioned by calculating and matching the taper, and the gap design between the components is realized, and the raw materials flow evenly during the extrusion process, which solves the problem that the original plastic passes through the two-core support point and causes the surface of the wire to be extruded. By using an annular chamfer on the two-core equalizing flow distribution sleeve 4 and the circular chamfer R of the mold core seat, the raw materials can obtain extrusion pressure equalization during the production extrusion process, thereby realizing the uniform distribution of the three-color skin and the inner insulation during the three-layer co-extrusion process.
[0033] At the same time, in order to reduce waste and improve production efficiency. The utility model is equipped with three different flow channels of the diverter, and the rubber materials of different colors are accurately introduced through two auxiliary extruders to achieve instant color change. This design not only avoids the waste of color mixing, but also ensures the purity and efficiency of the color change process. It can achieve rapid color change without stopping within the shortest 10 meters, greatly reducing the waste of cables and raw materials, improving the production efficiency of the enterprise and saving production costs.
[0034] The production process is as follows: the glue injection port is divided into three routes: inner, middle and outer. The first route is injected from the glue injection port 7 of the inner insulating layer through the glue injection channel in the mold gap between the two-core pressure-equalizing shunt sleeve 4 and the inner mold core seat 6 to the surface of the conductor. The second route is injected from the glue injection port 8 of the middle insulating layer through the crescent-shaped confluence port of the shunt sleeve main part through the glue injection channel in the mold gap between the two-core pressure-equalizing shunt sleeve 4 and the inner mold core seat 6 to the surface of the innermost insulation to form a middle layer insulation. The third route is injected from the glue injection port 10 of the outer insulating layer through the glue injection channel in the gap between the two-core pressure-equalizing shunt sleeve 4 and the mold sleeve seat 2 and the annular chamfer R angle design of the two-core pressure-equalizing shunt sleeve 4 and the mold core seat to evenly distribute the outermost color skin, which is brought together through the mold sleeve 3 to achieve three-layer co-extrusion and tight connection of the extruded three-layer extruded skin.
[0035] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.
Claims
1. A three-layer co-extrusion shunt for producing electric wires, comprising a shunt main body component, characterized in that: The interior of the main body of the flow divider is sleeved with a mold sleeve seat, a two-core pressure-equalizing flow divider sleeve, and an inner mold core seat in sequence from the left end to the right end, the mold sleeve seat is provided with a mold sleeve, and the mold sleeve seat, the two-core pressure-equalizing flow divider sleeve, and the inner mold core seat are sleeved with an inner mold core; The main body of the flow divider is provided with three glue injection channels, wherein the centers of two of the glue injection channels and the center of the main body of the flow divider are in the same plane, and the other glue injection channel is connected to the glue injection port of the middle insulating layer; The diverter also includes a diverter sleeve rotating gear and a diverter sleeve linear gear; the diverter sleeve rotating gear is connected to the right end of the diverter main body component, and the diverter sleeve linear gear is connected to the diverter sleeve rotating gear. When the diverter sleeve linear gear moves, it drives the diverter sleeve rotating gear teeth to move, and then the diverter sleeve rotating gear teeth drive the diverter main body component to rotate to achieve the interchange of the injection channel position.
2. According to claim 1, a three-layer co-extrusion shunt for producing electric wires, characterized in that: The two injection channels are located in the same plane as the center of the main body of the diverter, one of which is arranged in the gap between the two-core pressure-equalizing diverter sleeve and the mold sleeve seat, and the other is arranged in the gap between the two-core pressure-equalizing diverter sleeve and the inner mold core seat.
3. A three-layer co-extrusion shunt for producing electric wires according to claim 2, characterized in that: The glue injection channel arranged in the gap between the two-core pressure-equalizing shunt sleeve and the inner mold core seat is connected to the glue injection port of the inner insulating layer, and the glue injection channel arranged in the gap between the two-core pressure-equalizing shunt sleeve and the mold sleeve seat is connected to the glue injection port of the outer insulating layer.
4. A three-layer co-extrusion shunt for producing electric wires according to claim 3, characterized in that: The injection flow channel confluence port connected to the intermediate insulating layer injection port is the intermediate insulating layer confluence port, and the intermediate insulating layer confluence port is configured as a crescent-shaped confluence port. At the same time, the two-core equalizing shunt sleeve connected to the intermediate insulating layer confluence port and the intermediate insulating layer injection flow channel are configured with annular chamfers.
5. A three-layer co-extrusion shunt for producing electric wires according to any one of claims 1 to 4, characterized in that: The contact interface between the mold sleeve, the mold sleeve seat and the inner mold core, the two-core pressure equalizing and diverter sleeve is an inclination angle, the contact interface between the inner mold core and the mold sleeve is an inclination angle, the contact interface between the two-core pressure equalizing and diverter sleeve and the mold sleeve, the mold sleeve seat, and the inner mold core seat is an inclination angle, the contact interface between the inner mold core seat and the two-core pressure equalizing and diverter sleeve is an inclination angle, and the inclination angle is 10-15° inclined from the vertical plane.
6. A three-layer co-extrusion shunt for producing electric wires according to claim 5, characterized in that: The inclination angle is 12.4° from the vertical plane.
7. A three-layer co-extrusion shunt for producing electric wires according to claim 6, characterized in that: The contact interfaces between the mold sleeve, the mold sleeve seat and the inner mold core, the two-core pressure equalizing and diverting sleeve, and the contact interfaces between the two-core pressure equalizing and diverting sleeve and the inner mold core, the inner mold core seat are set with a gap of 0.05-0.1mm.