Multi-strand cable coating device

Abstract

The utility model discloses a multi-strand cable coating device, and relates to the technical field of cable production. The injection molding device comprises an injection molding device body, a conveying pipe is fixedly connected to the bottom of the injection molding device body, a wrapping shell is fixedly connected to the bottom end of the conveying pipe, an injection molding cavity is formed in the front side of the wrapping shell, an adjusting guide pipe is movably connected to the inner wall of the injection molding cavity, and an adjusting assembly is arranged at the rear end of the adjusting guide pipe; a cooling assembly is arranged at the front end of the wrapping shell, and a linkage assembly is arranged between the adjusting assembly and the cooling assembly. The front end of the adjusting guide pipe and the front end of the injection molding cavity are both arranged to be conical, when the adjusting assembly drives the adjusting guide pipe, the distance between the adjusting guide pipe moving in the injection molding cavity and the front end of the injection molding cavity can be adjusted, and plastic is formed at the front end of the adjusting guide pipe and the front end of the injection molding cavity; therefore, the wall thickness of the plastic pipe extruded between the adjusting guide pipe and the injection molding cavity can be adjusted according to the requirements of different cables.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable production, and in particular relates to a multi-strand cable covering device. Background Art

[0002] During the cable production process, an extrusion-type coating die is used for forming. This molding method mainly covers the wire or core wire with plastic by extrusion. The plastic coating on the wire or core wire is cooled by a cooling device to form an insulating layer. This method of applying the insulating layer to the wire or core wire not only improves production efficiency and ensures the insulation performance and structural integrity of the cable, but also provides good waterproof performance, thereby enhancing the overall quality and reliability of the cable.

[0003] The working principle of the extrusion coating head is to extrude plastic into a tube. At this time, the guide rod is used to form the inner surface of the tube, and the die is used to form the outer surface. At the same time, the wire or core wire can pass through the inside of the guide rod and make the formed tube directly cover the outer surface of the wire or core wire. The wall thickness of the formed tube is mainly determined by the distance between the middle guide rod and the die. Since the distance between the guide rod and the die is fixed in the existing technology, the wall thickness of the formed tube cannot be adjusted according to the requirements of different cables when the formed tube is coated on the outside of the wire or core wire through the extrusion coating head.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] In view of the problems in the related art, the present invention proposes a multi-strand cable covering device to overcome the above technical problems existing in the existing related art.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a multi-strand cable sheathing device, comprising an injection molding device body 1, a transport tube 2 fixedly connected to the bottom of the injection molding device body 1, a coating shell 3 fixedly connected to the bottom end of the transport tube 2, an injection molding cavity 4 is opened on the front side of the coating shell 3, an adjustment guide tube 5 is movably connected to the inner wall of the injection molding cavity 4, an adjustment component 6 is provided at the rear end of the adjustment guide tube 5, a cooling component 7 is provided at the front end of the coating shell 3, and a linkage component 8 is provided between the adjustment component 6 and the cooling component 7.

[0008] Furthermore, the front ends of the injection cavity 4 and the adjustment guide tube 5 are both tapered, a driving cavity 9 is opened on the rear side of the covering shell 3 , and the rear end of the adjustment guide tube 5 is located inside the driving cavity 9 .

[0009] Furthermore, the adjustment component 6 includes a driving screw 601, which is fixedly connected to the adjustment guide tube 5. The inner wall of the driving cavity 9 is fixedly connected to a limiting plate 602. Two limiting plates 602 are provided. The limiting plates 602 are movably connected to the driving screw 601. A driven gear 603 is provided between the two limiting plates 602, and the driven gear 603 is threadedly connected to the driving screw 601.

[0010] Furthermore, the adjustment component 6 further includes a limit frame 604 , which is fixedly connected to the driving screw 601 . A limit groove 605 is provided on the inner wall of the driving cavity 9 , and the limit frame 604 is movably connected to the limit groove 605 .

[0011] Furthermore, the cooling assembly 7 includes a cooler 701, which is fixedly mounted on the bottom of the covering shell 3. A cooling cavity 702 is provided at the front end of the covering shell 3. A cooling pipe 703 is provided inside the cooling cavity 702. Both ends of the cooling pipe 703 are fixedly connected to the cooler 701.

[0012] Furthermore, the cooling assembly 7 further includes a throttle valve 704 , which is fixedly mounted on the back of the cooling machine 701 , and the throttle valve 704 is fixedly mounted together with the cooling pipe 703 .

[0013] Furthermore, the linkage assembly 8 includes a motor 801, which is fixedly mounted on the bottom of the covering shell 3. The output end of the motor 801 is fixedly connected to a linkage rod 802. The outer surface of the linkage rod 802 is fixedly connected to a driving gear 803. A linkage groove 804 is provided at the bottom of the covering shell 3. The driving gear 803 is meshed with the driven gear 603 through the linkage groove 804. One end of the linkage rod 802 is fixedly connected to the valve stem on the throttle valve 704.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model drives the adjustment component so that the front end of the adjustment guide tube can move linearly inside the injection molding cavity. Since the front ends of the adjustment guide tube and the injection molding cavity are both tapered, the distance between the adjustment guide tube and the front end of the injection molding cavity can be adjusted when the adjustment guide tube moves. In addition, the plastic is molded at the front ends of the adjustment guide tube and the injection molding cavity, so that the wall thickness of the plastic tube extruded from between the adjustment guide tube and the injection molding cavity can be adjusted according to the requirements of different cables.

[0016] 2. The utility model drives the linkage rod by the motor. At this time, the linkage rod can drive the driving screw to rotate through the driving gear and the driven gear, so that the distance between the adjustment guide tube and the front end of the injection cavity can be adjusted. At the same time, the rotating linkage rod can drive the valve stem on the throttle valve to rotate, so that the cross-section of the throttle valve can be adjusted, and the flow rate of the coolant flowing inside the cooling tube can be adjusted. In summary, when the distance between the adjustment guide tube and the front end of the injection cavity is adjusted, the flow rate of the coolant inside the cooling tube will change accordingly, so that no matter how the wall thickness of the adjustment guide tube and the plastic tube extruded from the front end of the injection cavity changes, the coolant inside the cooling tube can cool it to a suitable temperature, so that the extruded plastic tube can be better sheathed on the outer surface of the core wire.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the external outline structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the linkage assembly structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the package shell of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the adjustment guide tube of the utility model;

[0023] Figure 5 This is a schematic diagram of the cooling assembly structure of the present utility model;

[0024] Figure 6 For the utility model Figure 5 A is an enlarged structural diagram.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Injection molding device body; 2. Transport tube; 3. Covering shell; 4. Injection molding cavity; 5. Adjustment guide tube; 6. Adjustment assembly; 601. Driving screw tube; 602. Limiting plate; 603. Driven gear; 604. Limiting frame; 605. Limiting groove; 7. Cooling assembly; 701. Cooling machine; 702. Cooling cavity; 703. Cooling tube; 704. Throttle valve; 8. Linkage assembly; 801. Motor; 802. Linkage rod; 803. Driving gear; 804. Linkage groove; 9. Driving cavity. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the utility model embodiments in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the utility model embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of utility model protection.

[0028] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] See also Figures 1-6 As shown, the utility model is a multi-strand cable sheathing device, including an injection molding device body 1, the bottom of the injection molding device body 1 is fixedly connected to a transport tube 2, the bottom end of the transport tube 2 is fixedly connected to a sheathing shell 3, an injection molding cavity 4 is opened on the front side of the sheathing shell 3, the inner wall of the injection molding cavity 4 is movably connected to an adjustment guide tube 5, the rear end of the adjustment guide tube 5 is provided with an adjustment component 6, the front end of the sheathing shell 3 is provided with a cooling component 7, and a linkage component 8 is provided between the adjustment component 6 and the cooling component 7.

[0030] By driving the linkage component 8, the adjustment component 6 drives the adjustment guide tube 5 to move back and forth inside the injection cavity 4. At this time, the distance between the front end of the adjustment guide tube 5 and the front end of the injection cavity 4 can be adjusted along with one end of the adjustment guide tube 5. At the same time, under the drive of the linkage component 8, the flow rate of the coolant inside the cooling component 7 can be adjusted according to the distance between the adjustment guide tube 5 and the front end of the injection cavity 4.

[0031] By driving the adjustment component 6, the position of the adjustment guide tube 5 and the front end of the injection cavity 4 can be adjusted. This setting allows the wall thickness of the plastic tube extruded from between the adjustment guide tube 5 and the injection cavity 4 to be adjusted according to the requirements of different cables; through the linkage component 8, the adjustment guide tube 5 at one end of the adjustment component 6 and the flow rate of the coolant inside the cooling component 7 can be adjusted at the same time. This setting allows the flow rate of the coolant inside the cooling component 7 to increase when the distance between the adjustment guide tube 5 and the front end of the injection cavity 4 increases, so that no matter how the wall thickness of the plastic tube extruded from the injection cavity 4 and the front end of the adjustment guide tube 5 changes, the cooling effect of the cooling component 7 on it can always be in the best state.

[0032] In one embodiment, for the above-mentioned injection cavity 4, the front ends of the injection cavity 4 and the adjustment guide tube 5 are both conically arranged, a driving cavity 9 is opened on the rear side of the covering shell 3, and the rear end of the adjustment guide tube 5 is inside the driving cavity 9.

[0033] When the adjustment guide tube 5 moves inside the injection cavity 4, the entire adjustment guide tube 5 can continuously move toward the inside of the driving cavity 9. At this time, the distance between the adjustment guide tube 5 and the tapered position at the front end of the injection cavity 4 can be adjusted as the adjustment guide tube 5 moves. The front ends of the injection cavity 4 and the adjustment guide tube 5 are both tapered, so when adjusting the wall thickness of the extruded plastic pipe, it is sufficient to move the adjustment guide tube 5 in a straight line.

[0034] In one embodiment, for the above-mentioned adjustment component 6, the adjustment component 6 includes a driving screw 601, which is fixedly connected to the adjustment guide tube 5, and the inner wall of the driving cavity 9 is fixedly connected to a limiting plate 602, and two limiting plates 602 are provided. The limiting plates 602 are movably connected to the driving screw 601, and a driven gear 603 is provided between the two limiting plates 602. The driven gear 603 is threadedly connected to the driving screw 601, and the adjustment component 6 also includes a limiting frame 604, which is fixedly connected to the driving screw 601, and a limiting groove 605 is provided on the inner wall of the driving cavity 9, and the limiting frame 604 is movably connected to the limiting groove 605.

[0035] By rotating the driven gear 603, the driven gear 603 rotates in place under the limitation of the two limit plates 602, and the limit groove 605 limits the driving screw 601 through the limit frame 604. As the driven gear 603 rotates, the driving screw 601 engaged with it can move linearly inside the driving cavity 9, and at the same time, the adjustment guide tube 5 also moves linearly under the drive of the driving screw 601. In summary, with the assistance of the two limit plates 602, the limit groove 605 and the limit frame 604, the stability can be guaranteed when the driven gear 603 adjusts the position of the front end of the adjustment guide tube 5 through the driving screw 601. At the same time, the core wire can pass through the inside of the limit frame 604, the driving screw 601 and the adjustment guide tube 5, so that the extruded plastic pipe can be normally coated on the outer surface of the core wire.

[0036] In one embodiment, for the above-mentioned cooling component 7, the cooling component 7 includes a cooler 701, which is fixedly installed on the bottom of the covering shell 3. A cooling cavity 702 is provided at the front end of the covering shell 3. A cooling pipe 703 is provided inside the cooling cavity 702. Both ends of the cooling pipe 703 are fixedly connected to the cooler 701. The cooling component 7 also includes a throttle valve 704, which is fixedly installed on the back of the cooler 701. The throttle valve 704 is fixedly installed with the cooling pipe 703.

[0037] The coolant can flow inside the cooling cavity 702 through the cooling pipe 703, and the flowing coolant can cool the plastic tube extruded from the injection cavity 4 and the front end of the adjustment guide tube 5. The coolant inside the cooling pipe 703 can circulate through the cooler 701, and the cooler 701 can cool the heat carried by the flowing coolant, so that the overall cooling effect of the coolant inside the cooling pipe 703 can be guaranteed. At the same time, by rotating the throttle valve 704, the cross-section of the coolant that can pass through the throttle valve 704 can be adjusted. At this time, under the condition of unchanged hydraulic pressure, as the cross-section becomes smaller, the coolant flow rate inside the cooling pipe 703 can be increased, so that the overall cooling effect of the cooling component 7 can be adjusted.

[0038] In one embodiment, for the above-mentioned linkage assembly 8, the linkage assembly 8 includes a motor 801, the motor 801 is fixedly installed at the bottom of the covering shell 3, the output end of the motor 801 is fixedly connected to a linkage rod 802, the outer surface of the linkage rod 802 is fixedly connected to the driving gear 803, and a linkage groove 804 is provided at the bottom of the covering shell 3. The driving gear 803 is meshed with the driven gear 603 through the linkage groove 804, and one end of the linkage rod 802 is fixedly connected to the valve stem on the throttle valve 704.

[0039] By driving the motor 801, the motor 801 can drive the linkage rod 802 to rotate. At this time, the linkage rod 802 can drive the driven gear 603 to rotate through the driving gear 803, so that the driven gear 603 drives the adjustment guide tube 5 to move through the driving screw 601. At the same time, the rotating linkage rod 802 can drive the valve stem on the throttle valve 704 to rotate, so that the cross-section of the throttle valve 704 can be adjusted, and the flow rate of the coolant flowing inside the cooling tube 703 can be adjusted. In summary, when the distance between the adjustment guide tube 5 and the front end of the injection cavity 4 is adjusted, the flow rate of the coolant inside the cooling tube 703 will change accordingly, so that no matter how the wall thickness of the adjustment guide tube 5 and the plastic tube extruded from the front end of the injection cavity 4 changes, the coolant inside the cooling tube 703 can cool it to a suitable temperature, so that the extruded plastic tube can be better sheathed on the outer surface of the core wire.

[0040] Through the above technical solution, 1. By driving the adjustment component 6, the front end of the adjustment guide tube 5 can be moved linearly inside the injection cavity 4. Since the front ends of the adjustment guide tube 5 and the injection cavity 4 are both tapered, the distance between the adjustment guide tube 5 and the front end of the injection cavity 4 can be adjusted when the adjustment guide tube 5 moves. In addition, the plastic is molded at the front ends of the adjustment guide tube 5 and the injection cavity 4, so that the wall thickness of the plastic tube extruded from between the adjustment guide tube 5 and the injection cavity 4 can be adjusted according to the needs of different cables; 2. By driving the linkage rod 802 by the motor 801, the linkage rod 802 can drive the driving screw 601 through the driving gear 803 and the driven gear 603. Rotation makes it possible to adjust the distance between the adjusting guide tube 5 and the front end of the injection cavity 4, and at the same time, the rotating linkage rod 802 can drive the valve stem on the throttle valve 704 to rotate, so that the cross-section of the throttle valve 704 can be adjusted, and the flow rate of the coolant flowing inside the cooling tube 703 can be adjusted. In summary, when the distance between the adjusting guide tube 5 and the front end of the injection cavity 4 is adjusted, the flow rate of the coolant inside the cooling tube 703 will change accordingly, so that no matter how the wall thickness of the plastic tube extruded from the adjusting guide tube 5 and the front end of the injection cavity 4 changes, the coolant inside the cooling tube 703 can cool it to a suitable temperature, so that the extruded plastic tube can be better sheathed on the outer surface of the core wire.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the utility model. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The preferred embodiments do not describe all details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. This specification selects and describes these embodiments in detail to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-strand cable covering device, comprising an injection molding device body (1), characterized in that: The bottom of the injection molding device body (1) is fixedly connected to a transport tube (2), the bottom end of the transport tube (2) is fixedly connected to a covering shell (3), an injection cavity (4) is provided on the front side of the covering shell (3), an adjustment guide tube (5) is movably connected to the inner wall of the injection cavity (4), an adjustment component (6) is provided at the rear end of the adjustment guide tube (5), a cooling component (7) is provided at the front end of the covering shell (3), and a linkage component (8) is provided between the adjustment component (6) and the cooling component (7).

2. A multi-strand cable covering device according to claim 1, characterized in that: The front ends of the injection cavity (4) and the adjustment guide tube (5) are both tapered, a driving cavity (9) is provided on the rear side of the covering shell (3), and the rear end of the adjustment guide tube (5) is located inside the driving cavity (9).

3. A multi-strand cable covering device according to claim 2, characterized in that: The adjustment assembly (6) comprises a driving solenoid (601), the driving solenoid (601) being fixedly connected to the adjustment guide tube (5), the inner wall of the driving cavity (9) being fixedly connected to a limiting plate (602), two limiting plates (602) being provided, the limiting plates (602) being movably connected to the driving solenoid (601), a driven gear (603) being provided between the two limiting plates (602), and the driven gear (603) being threadedly connected to the driving solenoid (601).

4. A multi-strand cable covering device according to claim 3, characterized in that: The regulating assembly (6) further comprises a limit frame (604), wherein the limit frame (604) is fixedly connected to the driving screw (601), and a limit groove (605) is provided on the inner wall of the driving cavity (9), and the limit frame (604) is movably connected to the limit groove (605).

5. A multi-strand cable covering device according to claim 4, characterized in that: The cooling assembly (7) comprises a cooling machine (701), wherein the cooling machine (701) is fixedly mounted on the bottom of the covering shell (3), a cooling cavity (702) is provided at the front end of the covering shell (3), a cooling pipe (703) is provided inside the cooling cavity (702), and both ends of the cooling pipe (703) are fixedly connected to the cooling machine (701).

6. A multi-strand cable covering device according to claim 5, characterized in that: The cooling assembly (7) further comprises a throttle valve (704), wherein the throttle valve (704) is fixedly mounted on the back of the cooling machine (701), and the throttle valve (704) is fixedly mounted together with the cooling pipe (703).

7. A multi-strand cable covering device according to claim 6, characterized in that: The linkage assembly (8) comprises a motor (801), the motor (801) being fixedly mounted on the bottom of the covering shell (3), the output end of the motor (801) being fixedly connected to a linkage rod (802), the outer surface of the linkage rod (802) being fixedly connected to a driving gear (803), a linkage groove (804) being provided at the bottom of the covering shell (3), the driving gear (803) being meshed with the driven gear (603) through the linkage groove (804), and one end of the linkage rod (802) being fixedly connected to a valve stem on a throttle valve (704).

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