High temperature elastic trimmer head

Abstract

The utility model discloses a high temperature elasticity fine adjustment machine head, including the inner mould and the outer mould of setting in the inner mould end, including the main part and the movement core of setting in the main part inside, the interval of inner mould and outer mould has injection interval, the main part is provided with annular deformation groove, the deformation groove divides the main part and is separated the installation department for installing the movement core and the deformation department for installing the outer mould, the deformation department is provided with the annular array of a plurality of fine adjustment screws, the fine adjustment screw passes through the deformation department and the deformation groove and is connected with the installation department screw thread, the deformation department outer sleeve is equipped with the eye mould heating ring. The utility model discloses through adjusting the connecting position between the outer mould gland and the deformation department, can adjust the front and back distance between the inner mould and the outer mould, through the fine adjustment screw drive deformation department to produce different degree deformation with deformation groove can adjust the injection interval between the inner mould and the outer mould. The inner mould and the outer mould can simply carry out the fine adjustment operation, and the outer mould is heated evenly, and the temperature in the machine head is even, and the plasticizing effect of the glue material is good.

Description

Technical Field

[0001] This utility model relates to the field of cable extrusion head technology, and in particular to a high-temperature elastic micro-adjustment head. Background Technology

[0002] With the rapid growth in market demand for fluoroplastic cables, such as aerospace cables, nuclear power cables, and high-voltage wire harness processing, as well as the extrusion of insulation layers for high-voltage cables (requiring temperatures above 150°C) inside electric vehicle battery packs, the demand for extrusion heads and dies used for fluoroplastics such as silicone rubber, polytetrafluoroethylene (PTFE), FEP, PFA, and high-temperature resistant insulation materials such as polyetheretherketone (PEEK) has surged. In particular, the demand for high-speed data signal cables, high-temperature resistant high-speed data transmission cables, field military cables, and automotive wiring harnesses for AI artificial intelligence, humanoid robots, and urban big data center servers places stringent requirements on injection molding precision.

[0003] Existing high-temperature and corrosion-resistant die heads generally adopt a similar conical glue inlet structure to those used at room temperature, such as Figure 1 As shown, the core 100 and outer mold 200 are installed inside the main body 300. The main body 300 has a hollowed-out area 400 corresponding to the area of ​​the outer mold 200. Utilizing the elasticity of the steel after the main body 300 is hollowed out, a deformation zone 500 is generated at the hollowed-out position. The deformation zone 500 is deformed by adjusting screws 600, which tightens or loosens the pressure of the deformation zone 500 on the outer mold 200. Four adjusting screws 600 on the side are used to adjust the outer mold 200, thereby adjusting the distance between the outer mold 200 and the core 100. This existing die head, due to the presence of the hollowed-out area 400, causes temperature transfer deviations. The high temperature of the heating coil 700 cannot be effectively conducted to the outer mold 200, resulting in uneven temperature within the die head and poor plasticization of the rubber compound. Therefore, we need a die head that can conduct heat evenly and allows for fine-tuning of the distance between the core and the outer mold. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature elastic fine-tuning head.

[0005] To achieve the above objectives, a high-temperature elastic fine-tuning head includes an inner mold and an outer mold sleeved at the end of the inner mold, a main body and a core sleeved inside the main body. The inner mold is tapered and fixed to the inner conical hole at the front end of the core. The core is tapered and tightly fitted to the cone of the main body. An injection gap is provided between the inner mold and the outer mold. The inner mold is provided with a thread hole, and the outer mold is provided with a discharge hole corresponding to the thread hole. The main body is provided with an annular deformation groove, which divides the main body into a mounting part for mounting the core and a deformation part for mounting the outer mold. An outer mold cover is sleeved on the outer mold and threadedly connected to the front end of the deformation part. The deformation part is provided with a plurality of fine-tuning screws arranged in an annular array with the discharge hole as the center. The fine-tuning screws pass through the deformation part and the deformation groove and are threadedly connected to the mounting part. An eye mold heating coil is sleeved on the deformation part.

[0006] The main body is separated into an installation section and a deformation section by a deformation groove. The inner mold is mounted to the installation section via a core mechanism, and the outer mold is mounted to the deformation section via an outer mold cap. The front-to-back distance between the inner and outer molds can be adjusted by adjusting the connection position between the outer mold cap and the deformation section. The injection gap between the inner and outer molds can be adjusted by using fine-tuning screws to drive the deformation section to deform to different degrees through the deformation groove. The heating ring for the eye mold is located at the deformation section, eliminating uneven heating of the outer mold. The inner and outer molds of the machine head can be easily fine-tuned, and the outer mold is heated evenly, resulting in uniform temperature within the machine head and good plasticizing of the plastic material.

[0007] Preferably, the rear end of the mounting part is provided with a movement cover for fixing the movement, and the movement cover is threadedly connected to the mounting part.

[0008] The movement cover is threaded to the mounting part, which facilitates the installation and removal of the movement, provides good fixation, and ensures a high degree of tightness between the movement and the body.

[0009] Preferably, the rear end of the mounting part is further provided with a plurality of heating holes arranged in a ring around the core for mounting the heating rod, and the rear end of the mounting part is provided with a rear baffle for sealing the heating rod, the rear baffle being connected to the mounting part by screws.

[0010] The ring array of heating holes is used to install any existing heating rod, which provides uniform heating to the core and inner mold, preventing the molten plastic from cooling down and affecting the injection molding effect. The back baffle is used to encapsulate the heating rod.

[0011] Preferably, the front end of the mounting part is provided with a front baffle for sealing the heating rod, the front baffle is connected to the mounting part by screws, and the front baffle part extends into the deformation groove.

[0012] The front and rear baffles are used to encapsulate the heating rod, which is simple to operate. Moreover, when machining the heating holes, the mounting part only needs to perform through hole machining, without the need to calculate the length of the heating rod for fixed-distance drilling, which is convenient to process. The front baffle extends into the deformation groove, saving space and also limiting the deformation head from excessive deformation.

[0013] Preferably, the mounting section is provided with a power cord box for connecting the heating rod lead wire.

[0014] The power cord box facilitates the arrangement of power cords for multiple heating elements.

[0015] Preferably, the front end of the deformable part is provided with an eye mold cover plate for positioning the eye mold heating coil, and the eye mold cover plate is screwed to the deformable part.

[0016] Preferably, the outer part of the mechanism is provided with a melting chamber, which is connected to the injection gap, and the mounting part is provided with a feed hole that is connected to the melting chamber.

[0017] Preferably, the mounting part is threadedly connected to a flange, the flange is provided with an injection hole, and the injection hole communicates with the feed hole.

[0018] Preferably, the flange outer sleeve is provided with a flange heating coil.

[0019] Preferably, the main body, the eye mold heating coil, and the flange heating coil are each connected to a temperature sensing bracket for mounting a temperature sensor.

[0020] Compared with the prior art, the beneficial effects of this utility model are: The main body of this invention is divided into an installation section and a deformation section by a deformation groove. The inner mold is mounted on the installation section via a core mechanism, and the outer mold is mounted on the deformation section via an outer mold cap. The front-to-back distance between the inner and outer molds can be adjusted by adjusting the connection position between the outer mold cap and the deformation section. The injection gap between the inner and outer molds can be adjusted by using fine-tuning screws to drive the deformation section to deform to different degrees via the deformation groove. The heating ring for the eye mold is located at the deformation section, eliminating uneven heating of the outer mold. The machine head allows for simple fine-tuning between the inner and outer molds, and the outer mold is heated evenly, resulting in uniform temperature within the machine head and good plasticizing of the plastic material. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram illustrating the background technology of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model.

[0024] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0025] Figure 4 This is a partial structural schematic diagram of the present invention.

[0026] Figure 5 This is a partial structural schematic diagram of the present invention.

[0027] Figure 6 This is a partial structural schematic diagram of the present invention.

[0028] Figure 7 This is a schematic diagram of the partial explosion structure of this utility model.

[0029] Figure 8 This is a schematic diagram of the partial explosion structure of this utility model. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0031] This utility model provides a high-temperature elastic fine-tuning head, such as Figures 1-8As shown, the device includes an inner mold 1 and an outer mold 2 fitted at the end of the inner mold 1, a main body 3 and a core 4 fitted inside the main body 3. The inner mold 1 is tapered and fixed to the inner conical hole at the front end of the core 4. The core 4 is tapered and tightly fitted to the cone of the main body 3, thereby installing the inner mold 1 and the core 4 inside the main body 3. There is an injection gap 12 between the inner mold 1 and the outer mold 2. The inner mold 1 is provided with a wire hole 11, and the outer mold 2 is provided with a discharge hole 21 corresponding to the wire hole 11. The injection gap 12 is connected to the discharge hole 21. The metal core wire passes through the wire hole 11. The metal core wire is wrapped with a plastic outer sheath in the injection gap 12 and the product cable is extruded from the discharge hole 21. The main body 3 is provided with an annular deformation groove 31, which divides the main body 3 into a mounting part 32 for mounting the movement 4 and a deformation part 33 for mounting the outer mold 2. The movement 4 and the inner mold 1 are mounted in the mounting part 32, and the outer mold 2 is mounted in the deformation part 33. The outer mold 2 is fitted with an outer mold cover 22, which is threaded to the front end of the deformation part 33. By adjusting the connection position between the outer mold cover 22 and the deformation part 33 through the threaded connection, the distance between the outer mold 2 and the inner mold 1 can be adjusted. The deformation part 33 is provided with an outlet... The material hole 21 has multiple fine-tuning screws 5 arranged in a central ring array. These screws 5 pass through the deformation part 33 and the deformation groove 31 and are threadedly connected to the mounting part 32. By adjusting the tightness of the fine-tuning screws 5, the degree of deformation of the deformation part 33 within the deformation groove 31 can be adjusted, thereby fine-tuning the injection gap 12 between the inner mold 1 and the outer mold 2. The deformation part 33 is fitted with a mold heating ring 6, which directly heats the outer mold 2, preventing uneven heating in the hollowed-out areas during heat transfer. The rear end of the mounting part 32 has a mechanism cover 41 for fixing the mechanism 4. The mechanism cover 41 is threadedly connected to the mounting part 32, pressing and fixing the mechanism 4 to the mounting part 32 to ensure a tight fit.

[0032] Considering the heat preservation treatment of the molten plastic by the core 4 and the inner mold 1, the rear end of the mounting part 32 is also provided with multiple heating holes 7 arranged in a ring array around the core 4 for mounting heating rods (not shown in the figure). The heating rods in the ring array heat the core 4 and the inner mold 1 to prevent the temperature of the molten plastic from dropping and affecting the injection molding effect. The rear end of the mounting part 32 is provided with a back baffle 71 for sealing the heating rods. The back baffle 71 is connected to the mounting part 32 by screws. The back baffle 71 encapsulates the heating rods to prevent them from being exposed. At the same time, the back baffle 71 also has a heat preservation effect.

[0033] The mounting part 32 is provided with a front baffle 72 for sealing the heating rod at its front end. The front baffle 72 is connected to the mounting part 32 by screws, and part of the front baffle 72 extends into the deformation groove 31. The front baffle 72 and the rear baffle 71 are used to encapsulate the heating rod, which is simple to operate. Moreover, when processing the heating hole 7, the mounting part only needs to perform through hole processing, without the need to calculate the length of the heating rod for fixed-distance drilling, which is convenient to process. The front baffle 72 extends into the deformation groove 31, saving space and also preventing the deformation part 33 from being excessively deformed.

[0034] Considering the wiring problem of multiple heating rods, the mounting part 32 is provided with a power cord box 73 for connecting the heating rod leads. The power cords of the heating rods can be bundled in the power cord box 73 and connected to the power source through the power cord box 73.

[0035] Considering the accuracy requirements for the installation of the eye mold heating coil 6, the front end of the deformation part 33 is provided with an eye mold cover plate 61 for positioning the eye mold heating coil 6. The eye mold cover plate 61 is screwed to the deformation part 33. The eye mold heating coil 6 is positioned by the eye mold cover plate 61, and at the same time, it can prevent the eye mold heating coil 6 from accidentally falling off.

[0036] The outer side of the core 4 is provided with a melting chamber 42. After the core 4 is installed with the main body 3, the inner wall of the main body 3 is sealed to the melting chamber 42 to prevent molten plastic from leaking through the gap. The melting chamber 42 is connected to the injection gap 12. The mounting part 32 is provided with a feed hole 34 that is connected to the melting chamber 42. During injection molding, the molten plastic is fed through the feed hole 34 and flows into the injection gap 12 through the melting chamber 42 to encapsulate the metal core wire.

[0037] Considering that the machine head needs to be connected to the injection molding machine for injection molding, the mounting part 32 is threadedly connected to the flange 8, the flange 8 is provided with an injection hole 81, the injection hole 81 is connected to the feed hole 37, and the injection molding machine performs injection molding operation through the injection hole 81 of the flange 8.

[0038] The flange 8 is fitted with a flange heating ring 9, which keeps the molten plastic inside the flange 8 warm.

[0039] The main body 3, eye mold heating ring 6, and flange heating ring 9 are each connected to a temperature sensing bracket 10 for installing temperature sensors (not shown in the figure). By installing any existing temperature sensor through the temperature sensing bracket 10, the temperature of the main body 3, eye mold heating ring 6, and flange heating ring 9 can be monitored in real time to ensure that the temperature meets the standard.

[0040] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A high-temperature elastic fine-tuning head, characterized in that, The device includes an inner mold and an outer mold fitted at the end of the inner mold, a main body and a movement fitted inside the main body. The inner mold is tapered and fixed to the inner conical hole at the front end of the movement. The movement is tapered and tightly fitted to the cone shape of the main body. There is an injection gap between the inner mold and the outer mold. The inner mold is provided with a thread hole. The outer mold is provided with a discharge hole corresponding to the thread hole. The main body is provided with an annular deformation groove. The deformation groove divides the main body into a mounting part for mounting the movement and a deformation part for mounting the outer mold. The outer mold is fitted with an outer mold cap. The outer mold cap is threaded to the front end of the deformation part. The deformation part is provided with a plurality of fine-tuning screws arranged in a ring around the discharge hole. The fine-tuning screws pass through the deformation part and the deformation groove and are threaded to the mounting part. The deformation part is fitted with an eye mold heating coil.

2. The high-temperature elastic fine-tuning head according to claim 1, characterized in that, The rear end of the mounting section is provided with a movement cover for fixing the movement, and the movement cover is threadedly connected to the mounting section.

3. The high-temperature elastic fine-tuning head according to claim 1, characterized in that, The rear end of the mounting part is also provided with multiple heating holes arranged in a ring around the core for mounting the heating rod. The rear end of the mounting part is provided with a back baffle for sealing the heating rod. The back baffle is connected to the mounting part by screws.

4. The high-temperature elastic fine-tuning head according to claim 3, characterized in that, The front end of the mounting part is provided with a front baffle for sealing the heating rod. The front baffle is connected to the mounting part by screws, and part of the front baffle extends into the deformation groove.

5. A high-temperature elastic fine-tuning head according to claim 4, characterized in that, The mounting section is equipped with a power cord box for connecting the heating rod lead wire.

6. The high-temperature elastic fine-tuning head according to claim 1, characterized in that, The front end of the deformable part is provided with an eye mold cover plate for positioning the eye mold heating coil, and the eye mold cover plate is screwed to the deformable part.

7. A high-temperature elastic fine-tuning head according to claim 6, characterized in that, The outer part of the mechanism is provided with a melting chamber, which is connected to the injection gap, and the mounting part is provided with a feed hole that is connected to the melting chamber.

8. A high-temperature elastic fine-tuning head according to claim 7, characterized in that, The mounting part is threadedly connected to a flange, and the flange is provided with an injection hole, which is connected to the feed hole.

9. A high-temperature elastic fine-tuning head according to claim 8, characterized in that, The flange outer sleeve is equipped with a flange heating coil.

10. A high-temperature elastic fine-tuning head according to claim 9, characterized in that, The main body, the eye mold heating coil, and the flange heating coil are each connected to a temperature sensing bracket for mounting a temperature sensor.

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