Cable heating extrusion equipment

Abstract

The utility model discloses cable heating extrusion equipment. According to the utility model, the piston ring is arranged in front of the annular through groove, the whole horizontal movement under stress is realized by means of the elastic piece, and the cable material can be filled in the circumferential direction before the movement, so that the circumferential uniform discharging is realized, and particularly, the cable core is coated in the initial insulating layer discharging stage. Meanwhile, compared with the problem of rapid cooling after the previous cable material coating process, the embodiment of the utility model adopts a mode of changing the length of the extending (stretching) cooling channel to flexibly deal with the problem.

Description

Technical Field

[0001] The utility model relates to the technical field of cable preparation, and specifically relates to a cable heating and extrusion device. Background Art

[0002] A cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. The wires are coated with an external insulating layer through an extrusion device, and then the cable will be put into use. During the production and manufacturing process of the cable, in order to improve the use effect of the wire and cable, multiple layers of materials will be coated on the outside of the wire and cable. However, most traditional automatic extrusion devices for wire and cable materials can only extrude a single layer of material to be coated on the outside of the inner core, and then cool it through a water bath, and then coat the next layer of material through the next extrusion device. The process is relatively complex. There are only circumferential through grooves conventionally, and there is a path difference when the extrusion cylinder initially discharges circumferentially, which easily causes the cable core to move forward slowly (continuous process) before the circumferential uniform discharge is completed, resulting in uneven coating on the surface of the cable core in the initial stage and causing waste.

[0003] In order to solve the above problems, this case is born. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a cable heating and extrusion device, which solves the problems put forward in the above background art.

[0006] (II) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A cable heating and extrusion device includes a support frame, an inner extrusion cylinder member and an outer extrusion cylinder member are arranged on the support frame, spiral extrusion cylinders for extruding cable materials are respectively connected to the inner extrusion cylinder member and the outer extrusion cylinder member, and both the discharging sides of the inner extrusion cylinder member and the outer extrusion cylinder member are connected with a coolant circulation cylinder for cooling. The inner extrusion cylinder member includes an inner extrusion cylinder. An inlet is formed at the connection between the inner extrusion cylinder and the spiral extrusion cylinder. A circumferential through groove is opened on the inner extrusion cylinder near the inlet. A piston ring is arranged in front of the circumferential through groove. Under normal conditions, the piston ring blocks the circumferential through groove and moves horizontally as a whole by means of a spring after the extrusion force of the cable material is achieved.

[0008] Preferably, a water inlet and a water outlet are respectively arranged on both sides of the coolant circulation cylinder. A circumferential groove is opened on the coolant circulation cylinder to allow the incoming cold water to fill the inner wall of the coolant circulation cylinder.

[0009] Preferably, an annular block is connected to the connecting side of the outer extrusion cylinder. The size of the annular block is adapted to the circumferential groove, and the axial length of the cold water arranged in the coolant circulation cylinder is changed by controlling the length inserted into the circumferential groove.

[0010] Preferably, the piston ring divides the circumferential wall of the inner extrusion cylinder. The space on the side of the feeding port is smaller than the other side and forms a filling space.

[0011] Preferably, the size of the piston ring is larger than the circumferential through groove so as to be able to completely block it.

[0012] (III) Beneficial effects

[0013] After adopting the above technical solutions, compared with the prior art, the present utility model has the following advantages: The cable heating and extrusion equipment of the present utility model is provided with a piston ring in front of the circumferential through groove, and the elastic member is used to realize the movement of the whole level under force, and the cable material can be circumferentially filled before moving, so as to achieve circumferentially uniform discharging, especially for the coating of the cable core during the initial insulation layer discharging stage.

[0014] At the same time, for the problem of rapid cooling after the previous cable material coating process, this embodiment adopts the method of changing the length of the extended (telescopic) cooling channel to flexibly respond. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present utility model;

[0016] Figure 2 It is a schematic cross-sectional view of the improved part of the present utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the inner extrusion cylinder part of the present utility model.

[0018] In the figure: 1, support frame; 2, inner extrusion cylinder part; 21, inner extrusion cylinder; 22, piston ring; 23, spring; 24, feeding port; 25, filling space; 26, circumferential through groove; 3, outer extrusion cylinder part; 4, coolant circulation cylinder; 5, inlet; 6, outlet; 7, spiral extrusion cylinder; 8, card seat; 9, water inlet; 10, water outlet; 11, circumferential block; 12, circumferential groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0020] As Figure 1-2As shown: A cable heating and extrusion device includes a support frame 1, an inner extrusion cylinder part 2 and an outer extrusion cylinder part 3 provided on the support frame 1. The cable core is introduced from the inlet 5 on one side of the inner extrusion cylinder part 2 and finally led out from the outlet 6 side of the outer extrusion cylinder part 3. Spiral extrusion cylinders 7 for extruding corresponding cable materials are respectively connected to the inner extrusion cylinder 21 and the outer extrusion cylinder through clamping seats 8, and a conventional screw extruder is used in cooperation to extrude the heated cable material.

[0021] Cooling liquid circulation cylinders 4 are connected to the discharging sides of the inner extrusion cylinder part 2 and the outer extrusion cylinder part 3 for cooling. Among them, a single-layer material is extruded from the inner extrusion cylinder 21 and coated on the outer side of the cable core, and then cooled by a water bath, and then coated with the next layer of material through the next extrusion cylinder.

[0022] Water inlets 9 and water outlets 10 (cold water continuously enters and is discharged after absorbing heat during flow) are respectively provided on both sides of the cooling liquid circulation cylinder 4, and a circumferential groove 12 is formed on the cooling liquid circulation cylinder 4, so that the entering cold water can fill the inner wall of the cooling liquid circulation cylinder 4 to realize the cooling of the inner cable material. Secondly, there is a problem of rapid cooling after the previous cable material coating process. In this embodiment, the method of changing the length of the extended (telescopic) cooling channel is adopted to flexibly respond. That is, an annular block is connected to the connection side of the subsequent outer extrusion cylinder part 3. The annular block is adapted to the size of the circumferential groove 12, so that the inserted length can be controlled (by axially moving the overall structure of the latter part of the cooling liquid circulation cylinder 4) to change the axial length (and cooling time) of the cold water arranged in the cooling liquid circulation cylinder 4, so that the cable material can be cooled when it enters the next layer of material coating, which is more beneficial to the subsequent material coating.

[0023] Secondly, when the cable core is moved from the inlet 5 to the coated cable material, if there is only a circumferential through groove 26, due to the path difference during the initial circumferential discharging of the extrusion cylinder, it is easy to cause the cable core to slowly move forward (in a continuous and uninterrupted process) before the circumferential uniform discharging is completed, resulting in uneven coating on the surface of the cable core in the initial stage and the end stage, leading to waste.

[0024] Therefore, as shown in the appendix Figure 3 As shown, the inner extrusion cylinder part 2 is improved. It includes an inner extrusion cylinder 21. A piston ring 22 is arranged in front of the circumferential through groove 26, and the force (receiving the cable material) is realized through the spring 23 to move horizontally as a whole, and the cable material can be filled circumferentially before moving, so as to achieve circumferential uniform discharging, especially for the coating of the cable core in the initial stage of the preliminary insulation layer discharging.

[0025] The inner extrusion cylinder 21 is provided with a feeding port 24 for extruding cable materials. The piston ring 22 divides the circumferential wall of the inner extrusion cylinder 21, and the space on the side of the feeding port 24 is smaller to form a filling space 25. Secondly, under normal conditions, the piston ring 22 blocks the circumferential through groove 26 formed in the inner extrusion cylinder 21, and its size is slightly larger than that of the circumferential through groove 26 so as to be able to completely block it. Moreover, the elastic coefficient of the spring 23 is preferably selected to be small, that is, it can move after being stressed.

[0026] Based on the above embodiments, through the above description, relevant staff can completely make various changes and modifications without departing from the idea of this invention. The technical scope of this new type of use is not limited to the content in the specification, and its protection scope must be determined according to the scope of the claims.

Claims

1. A cable heating and extrusion device, comprising a support frame, an inner extrusion cylinder member and an outer extrusion cylinder member are arranged on the support frame, spiral extrusion cylinders for extruding cable materials are respectively connected to the inner extrusion cylinder member and the outer extrusion cylinder member, and cooling liquid circulation cylinders are connected to the discharge sides of the inner extrusion cylinder member and the outer extrusion cylinder member for cooling, and it is characterized in that: The inner extrusion barrel member includes an inner extrusion barrel. An inlet is formed at the connection between the inner extrusion barrel and the spiral extrusion barrel. The inner extrusion barrel is provided with a circumferential through groove on the side close to the inlet. A piston ring is arranged in front of the circumferential through groove. Under normal conditions, the piston ring seals the circumferential through groove and moves horizontally as a whole after realizing the extrusion pressure of the cable material by means of a spring.

2. The cable heating and extrusion device according to claim 1, wherein: Water inlets and water outlets are respectively arranged on both sides of the coolant circulation barrel. A circumferential groove is formed on the coolant circulation barrel to allow the incoming cold water to fill the inner wall of the coolant circulation barrel.

3. The cable heating and extrusion device according to claim 2, characterized in that: An annular block is connected to the connecting side of the outer extrusion barrel member. The annular block is adapted to the size of the circumferential groove, and the axial length of the cold water arranged in the coolant circulation barrel is changed by controlling the length inserted into the circumferential groove.

4. A cable heating and extrusion device according to claim 1, characterized in that: The piston ring separates the circumferential wall of the inner extrusion barrel. The space on the side of the inlet is smaller than the other side and forms a filling space.

5. A cable heating and extrusion device according to claim 1, characterized in that: The size of the piston ring is larger than that of the circumferential through groove so as to be able to completely seal it.

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