Cooling and cleaning device for cable extruder head

Abstract

The utility model discloses a cooling and cleaning device for a head of a cable extruder, and relates to the technical field of cable material extrusion equipment. Comprising an air compressor, a cooling mechanism and a cleaning mechanism, the cooling mechanism and the cleaning mechanism communicate with the air compressor, and the cooling mechanism is arranged on a machine head body and used for cooling the machine head body; the cleaning mechanism comprises a gland arranged on the die sleeve of the machine head body and an air blowing pipe obliquely arranged on the gland and corresponding to the discharging port of the die sleeve, the air compressor is communicated with the air blowing pipe through a pipeline, and the gland is provided with an outlet communicated with the discharging port in the axial direction. The cooling mechanism is arranged on the machine head body and used for cooling the machine head body, and the situation that the machine head is overheated is avoided; the pressing cover and the air blowing pipe of the cleaning mechanism correspond to the discharging port of the die sleeve, and when material slag exists at the discharging port of the die sleeve, the material slag can be blown away under the action of the air blowing pipe, so that material slag accumulation can be avoided, and the problem of forming a material ring can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable material extrusion equipment, in particular to a cooling and cleaning device for a cable extruder head. Background Art

[0002] In order to ensure good flame retardant properties, low-smoke halogen-free flame-retardant cable materials contain a large proportion of flame retardants in their material components. The presence of flame retardants makes it easy for cables to have excessive shear heat during high-speed extrusion, resulting in foaming and decomposition of the material, as well as die accumulation. Foaming and decomposition of the material will directly affect the mechanical and electrical properties of the cable, while die accumulation will cause the material ring to adhere to the cable insulation surface, affecting the surface quality of the cable insulation, and even damaging the cable insulation when the material ring is removed.

[0003] Temperature control and die slag cleaning during high-speed extrusion have become the key control factors in the extrusion process of low-smoke halogen-free flame-retardant cables. Most extruder heads are not equipped with cooling devices. When low-smoke halogen-free flame-retardant cables are extruded at high speed, the head is prone to overheating. In order to ensure the quality of the cable, the production speed has to be reduced or auxiliary cooling has to be used to cool the head, which affects the cable production efficiency. In addition, auxiliary cooling cannot achieve closed-loop temperature control, which can easily lead to head temperature out of control.

[0004] Some imported machine heads are equipped with an oil circulation temperature control system to ensure good temperature control of the machine head. This system requires a separate set of oil circulation equipment, is expensive, and is inconvenient to maintain, making it difficult to promote on a large scale. Utility Model Content

[0005] The utility model aims to provide a cooling and cleaning device for a cable extruder head, so as to solve the problems that the die of the existing low-smoke halogen-free cable extruder head is prone to material accumulation and the head temperature is difficult to control, thereby affecting the surface quality of cable insulation and cable production efficiency.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A cooling and cleaning device for a cable extruder die head, comprising: an air compressor, and a cooling mechanism and a cleaning mechanism respectively connected to the air compressor, wherein the cooling mechanism is arranged on a die body and used to cool the die body;

[0008] The cleaning mechanism includes a pressure cover arranged on the mold sleeve of the head body and a blowing pipe obliquely arranged on the pressure cover and corresponding to the discharge port of the mold sleeve. The air compressor is connected to the blowing pipe through a pipeline, and the pressure cover is axially provided with an outlet connected to the discharge port.

[0009] The air compressor of the utility model is used to provide cold air for the cooling mechanism and the cleaning mechanism. The cooling mechanism is arranged on the machine head body to cool the machine head body to avoid overheating of the machine head. The pressure cover and the blowing pipe of the cleaning mechanism, the blowing pipe corresponds to the discharge port of the mold sleeve. When slag is generated during the extrusion process of the cable insulation or sheath material, the slag at the discharge port of the mold sleeve can be blown away by the blowing pipe, thereby avoiding the accumulation of slag and effectively avoiding the problem of forming a material ring, thereby ensuring the surface quality of the cable insulation.

[0010] Furthermore, the cleaning mechanism also includes a cone which is arranged on the mold sleeve of the head body and is connected to the discharge port. The cone is located inside the gland, and the small diameter end of the cone corresponds to the air blowing pipe.

[0011] Furthermore, the cone angle of the cone is 90° to 120°, and the major diameter of the cone is 1 / 5 to 1 / 3 of the outer diameter of the mold sleeve.

[0012] Furthermore, the cone is provided with a tapered hole and a straight hole in sequence along the axial direction, the tapered hole corresponds to the discharge port, and the maximum diameter of the tapered hole is equal to the minimum diameter of the discharge port.

[0013] Furthermore, at least two of the above-mentioned air blowing pipes are provided, and all the air blowing pipes are relatively arranged on the gland and located outside the cone.

[0014] Furthermore, the cooling mechanism includes an air outlet assembly surrounded by the outside of the head body and a clamping member arranged on the air outlet assembly and pressed against the outer wall of the head body. The air compressor is connected to the air outlet assembly through a pipeline, and a solenoid valve is arranged on the air compressor.

[0015] Furthermore, the above-mentioned air outlet components are provided as at least one group.

[0016] Furthermore, the above-mentioned air outlet assembly includes a connecting pipe surrounded by the outside of the head body, and air outlet nozzles evenly spaced on the connecting pipe, the air outlets of all the air outlet nozzles are facing the end of the head body, and the fastening member is arranged on the connecting pipe.

[0017] The utility model has the following beneficial effects:

[0018] 1. The gland and the air blow pipe of the cleaning mechanism of the utility model correspond to the discharge port of the die sleeve in the die body. When the cable insulation or sheath material has slag generated during the extrusion process, the slag generated at the discharge port of the die sleeve can be blown away by the air blow pipe, thereby avoiding the accumulation of slag and effectively avoiding the problem of forming a material ring, thereby ensuring the surface quality of the cable insulation.

[0019] 2. The utility model sets a cone on the die sleeve of the machine head body, the large diameter end of the cone is connected to the die sleeve, and the maximum diameter of the tapered hole on the cone is equal to the minimum diameter of the discharge port. The cable insulation or sheath material is extruded from the straight hole, and the small diameter end of the cone is close to the position of the air blowing pipe, so that when the air blowing pipe is blowing, the slag can move from the conical surface of the cone, and the conical surface of the cone can guide the movement of the slag and prevent the blown slag from entering the die sleeve.

[0020] 3. In the cooling mechanism of the utility model, the connecting pipe is pressed against the outer wall of the machine head body by a pressing piece, cold air is introduced into the connecting pipe through an air compressor, and then the machine head body is cooled down by the cold air sprayed from the air outlet nozzle. The solenoid valve is used to control the opening and closing between the air compressor and the pipeline, so as to cool down the machine head body and avoid overheating of the machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the cooling and cleaning device for the cable extruder head;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the cleaning mechanism and the head body;

[0023] Figure 3 for Figure 2 A is an enlarged structural diagram of FIG.

[0024] In the figure: 1. cooling mechanism; 11. air outlet assembly; 111. connecting pipe; 112. air outlet nozzle; 12. fastening member; 2. cleaning mechanism; 21. pressure cover; 211. outlet; 22. air blowing pipe; 23. cone; 231. tapered hole; 232. straight hole; 3. machine head body; 31. mold sleeve; 32. discharge port. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figures 1 to 3 As shown, the utility model provides a cooling and cleaning device for a cable extruder head, comprising: an air compressor, and a cooling mechanism 1 and a cleaning mechanism 2 respectively connected to the air compressor, the cooling mechanism 1 being arranged on a head body 3 for cooling the head body 3 to avoid overheating of the head body 3; the cleaning mechanism 2 being used for blowing air to a discharge port 32 of a die sleeve 31 on the head body 3 to avoid material accumulation in the die sleeve 31 on the head body 3.

[0027] Specifically, the cleaning mechanism 2 includes a gland 21 disposed on the die sleeve 31 of the machine head body 3 and a blow pipe 22 obliquely disposed on the gland 21 and corresponding to the discharge port 32 of the die sleeve 31. The air compressor is connected to the blow pipe 22 through a pipeline, and the gland 21 is provided with an outlet 211 connected to the discharge port 32 along the axial direction. The gland 21 is embedded in the die sleeve 31 of the machine head body 3, and the air compressor is connected to the blow pipe 22 through a pipeline to provide cold air for the blow pipe 22. The gland 21 is provided with an oblique installation hole for installing the blow pipe 22, and the blow pipe 22 is embedded in the oblique installation hole on the gland 21; at least two blow pipes 22 are provided, and all the blow pipes 22 are relatively disposed on the gland 21 and located on the outside of the cone 23, wherein the side of the cone 23 away from the die sleeve 31 is the outside. In this embodiment, the number of the air blowing pipes 22 is 2, and they are symmetrically arranged on the gland 21 from top to bottom. In other embodiments of the utility model, the number of the air blowing pipes 22 can also be 3 or 4, and they are evenly distributed along the circumference of the gland 21. The cleaning mechanism 2 also includes a cone 23 arranged on the die sleeve 31 of the head body 3 and connected to the discharge port 32. The cone 23 is located inside the gland 21, and the small diameter end of the cone 23 corresponds to the air blowing pipe 22. In this embodiment, the cone angle of the cone 23 is 90° to 120°, the large diameter of the cone 23 is 1 / 5 to 1 / 3 of the outer diameter of the die sleeve 31, the cone 23 is embedded in the die sleeve 31, and the diameter of the outlet 211 on the gland 21 is greater than the maximum diameter of the cone 23; the cone 23 is sequentially provided with a tapered hole 231 and a straight hole 232 along the axial direction, the tapered hole 231 corresponds to the discharge port 32, and the maximum diameter of the tapered hole 231 is equal to the minimum diameter of the die outlet of the die sleeve 31. The cable insulation material or sheath material passes through the discharge port 32 and the tapered hole 231 of the die sleeve 31 in sequence and is extruded from the straight hole 232. The air blowing pipe 22 is connected to the air compressor and blows air to the outer edge of the straight hole 232. The conical surface of the cone 23 can be guided. When there is material slag when the cable is extruded, the material slag can be blown away under the action of the air blowing pipe 22, thereby avoiding the accumulation of material slag and the formation of material rings; at the same time, the cone 23 can also be cooled.

[0028] like Figure 1As shown, the cooling mechanism 1 includes an air outlet component 11 arranged outside the machine head body 3 and a fastening member 12 arranged on the air outlet component 11 and pressed against the outer wall of the machine head body 3. The air compressor is connected to the air outlet component 11 through a pipeline, and a solenoid valve is arranged on the air compressor. The air outlet component 11 is connected to the air compressor through a pipeline, and the solenoid valve is used to control the opening and closing of the pipeline. When the air compressor is turned on and the solenoid valve is opened, the air compressor delivers cold air to the air outlet component 11 through the pipeline, and the machine head body 3 is cooled down through the air outlet component 11; the air outlet component 11 is at least set as one group. In this embodiment, the air outlet component 11 is set in two groups, and they are respectively arranged on the outer walls of both ends of the machine head body 3. Both groups of air outlet components 11 are connected to the pipeline; in other embodiments of the utility model, the air outlet component 11 can also be set as 3 groups, 4 groups, etc. The air outlet assembly 11 includes a connecting pipe 111 arranged around the outside of the head body 3, and air outlet nozzles 112 evenly spaced on the connecting pipe 111. The air outlets of all the air outlet nozzles 112 are facing the end of the head body 3. The fastening member 12 is arranged on the connecting pipe 111. The fastening member 12 adopts a fastening bolt. The connecting pipe 111 is provided with a mounting block (not shown) for installing the fastening bolt. There are 4 fastening members 12, and the fastening members 12 are used to fix the connecting pipe 111 on the head body 3. In this embodiment, two groups of air outlet components 11 are located at both ends of the head body 3, and an air outlet can be opened on the air outlet nozzle 112. The air outlets of the air outlet nozzles 112 on the two groups of air outlet components 11 can be respectively directed toward the two ends of the head body 3, and the air outlets of the air outlet nozzles 112 on the two groups of air outlet components 11 can also be directed toward the same end of the head body 3. The air outlets of the air outlet nozzles 112 on the two groups of air outlet components 11 can also be arranged relatively to each other, so that convection wind is formed on the surface of the head body 3, so as to better cool down the head body 3; two air outlets corresponding to the two ends of the head body 3 can also be opened on the air outlet nozzle 112, and the air outlets of the air outlet nozzles 112 on the two groups of air outlet components 11 are both directed toward the two ends of the head body 3. The above are different settings of the air outlet on the air outlet nozzle 112, which depends on actual use and is not specifically limited here.

[0029] The connecting pipe 111 is arranged around the outer wall of the machine head body 3, and the air compressor and the solenoid valve are turned on. The air compressor delivers cold air to the connecting pipe 111 through the pipeline, and finally sprays it out through the air outlet of the air outlet nozzle 112, thereby cooling the machine head body 3. At the same time, a temperature control meter can also be set on the machine head body 3, and the temperature of the machine head body 3 can be adjusted by the temperature control meter combined with the cooling mechanism 1.

[0030] The cooling and cleaning device for the cable extruder head of the utility model realizes temperature regulation on the head body 3 and removal of material residues from the mold sleeve 31 through the arrangement of the cooling mechanism 1 and the cleaning mechanism 2, thereby ensuring efficient and stable extrusion of the low-smoke halogen-free flame-retardant cable and improving the quality of the low-smoke halogen-free flame-retardant cable.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling and cleaning device for a cable extruder head, characterized in that: include: An air compressor, and a cooling mechanism (1) and a cleaning mechanism (2) respectively connected to the air compressor, wherein the cooling mechanism (1) is arranged on the handpiece body (3) and is used to cool the handpiece body (3); The cleaning mechanism (2) comprises a pressure cover (21) arranged on a mold sleeve (31) of a machine head body (3) and an air blowing pipe (22) obliquely arranged on the pressure cover (21) and corresponding to a material outlet (32) of the mold sleeve (31); the air compressor is connected to the air blowing pipe (22) via a pipeline; and the pressure cover (21) is provided with an outlet (211) in an axial direction and connected to the material outlet (32).

2. The cooling and cleaning device for the cable extruder head according to claim 1, characterized in that: The cleaning mechanism (2) further comprises a cone (23) which is arranged on the mold sleeve (31) of the head body (3) and is connected to the discharge port (32); the cone (23) is located inside the pressure cover (21); and the small diameter end of the cone (23) corresponds to the blowing pipe (22).

3. The cooling and cleaning device for the cable extruder head according to claim 2, characterized in that: The cone angle of the cone (23) is 90° to 120°, and the major diameter of the cone (23) is 1 / 5 to 1 / 3 of the outer diameter of the mold sleeve (31).

4. The cooling and cleaning device for the cable extruder head according to claim 2, characterized in that: The cone (23) is provided with a tapered hole (231) and a straight hole (232) in sequence along the axial direction; the tapered hole (231) corresponds to the discharge port (32), and the maximum diameter of the tapered hole (231) is equal to the minimum diameter of the discharge port (32).

5. The cooling and cleaning device for the cable extruder head according to claim 2, characterized in that: At least two of the air blowing pipes (22) are provided, and all of the air blowing pipes (22) are arranged relatively on the gland (21) and are located outside the cone (23).

6. The cooling and cleaning device for a cable extruder head according to any one of claims 1 to 5, characterized in that: The cooling mechanism (1) comprises an air outlet component (11) arranged outside the machine head body (3) and a fastening member (12) arranged on the air outlet component (11) and fastened to the outer wall of the machine head body (3); the air compressor is connected to the air outlet component (11) through a pipeline, and a solenoid valve is arranged on the air compressor.

7. The cooling and cleaning device for the cable extruder head according to claim 6, characterized in that: The air outlet components (11) are arranged as at least one group.

8. The cooling and cleaning device for the cable extruder head according to claim 6, characterized in that: The air outlet assembly (11) comprises a connecting pipe (111) arranged around the outside of the machine head body (3), and air outlet nozzles (112) arranged on the connecting pipe (111) at even intervals, the air outlets of all the air outlet nozzles (112) are oriented toward the end of the machine head body (3), and the fastening member (12) is arranged on the connecting pipe (111).

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