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CN-121179700-B - High-temperature flat die body machine head

CN121179700BCN 121179700 BCN121179700 BCN 121179700BCN-121179700-B

Abstract

The invention relates to the technical field of cable injection molding die heads, in particular to a high Wen Bianping small die head, which comprises a die core and a die core, wherein the die core is sleeved with a die sleeve, the die core is sleeved with a main body, the die core and the die sleeve are sleeved in the die core, threading holes and discharging holes for conveying metal core wires are respectively formed in the center positions of the die core and the die sleeve, a wire stabilizing part comprising a bearing end seat and a magnetic suspension end head is arranged in the die core, and a tightening part sprays a molding agent to melt coated on the metal core wires through a high-pressure cavity so as to flatten the surface. The invention is provided with the buffer space, is beneficial to solving the problem that the machine head needs to be lengthened due to uneven dispersion caused by cone angle, can resist the high temperature conducted by the machine head, has no abrasion particles, and can purge pollutants in a nitrogen environment, thereby driving deionized water or dilute silicone oil emulsion or UV curing agent in the high-pressure cavity to spray the metal core wire coated with the melt, and playing the roles of accelerating solidification, leveling the surface and stabilizing the structure.

Inventors

  • CHEN AN

Assignees

  • 惠州市新泰欣宏精密模具有限公司

Dates

Publication Date
20260508
Application Date
20251103

Claims (9)

  1. 1. The utility model provides a flat die body aircraft nose of high temperature, includes mold core (1) and core (3), and the cover is equipped with die sleeve (2) on mold core (1), and cover main part (4) on core (3), mold core (1) and die sleeve (2) all suit in core (3), its characterized in that: The automatic feeding and discharging device is characterized in that threading holes (101) and discharging holes (201) for conveying metal core wires are respectively formed in the center positions of the die core (1) and the die sleeve (2), a wire stabilizing part (10) comprising a bearing end seat (1001) and a magnetic suspension end head (1002) is arranged in the die core (1), the bearing end seat (1001) and the magnetic suspension end head (1002) are rotationally connected, the wire stabilizing part (10) drives the metal core wires to rotate through the threading holes (101) in the magnetic suspension end head (1002) to improve concentricity, an injection molding gap (5) is formed between the die core (1) and the die sleeve (2), a positioning head (102) and a limiting head (202) are respectively arranged at the head positions of the die core (1) and the die sleeve (2), a buffer space (6) is formed between the positioning head (102) and the limiting head (202), and a melt formed by melting plastic waste material circulates onto the metal core wires through the injection molding gap (5) and the buffer space (6); An injection molding groove (301) communicated with the buffer space (6) is formed in the movement (3), and a connecting hole (401) communicated with the injection molding groove (301) is formed in the main body (4); A gland (8) is arranged on the die sleeve (2), a tightening part (11) matched with the wire stabilizing part (10) is arranged in the gland (8), the tightening part (11) comprises a synchronous end head (1103) and a high-pressure cavity (1109), and the tightening part (11) sprays a molding agent to a melt coated on the metal core wire through the high-pressure cavity (1109) to flatten the surface; The wire stabilizing part (10) further comprises a hollow annular cavity (1004), an electromagnetic stator (1006), a nitrogen hollow tube (1008) and a samarium cobalt rotor permanent magnet ring (1009), the nitrogen hollow tube (1008) is fixedly arranged in the hollow annular cavity (1004), the samarium cobalt rotor permanent magnet ring (1009) is rotatably arranged in the nitrogen hollow tube (1008), the samarium cobalt rotor permanent magnet ring (1009) is rotatably abutted against the magnetic suspension end (1002), the electromagnetic stator (1006) is fixedly arranged on the hollow annular cavity (1004), a controllable rotating magnetic field is generated after variable frequency current is introduced, the electromagnetic stator (1006) is electrified to generate the rotating magnetic field to drive the samarium cobalt rotor permanent magnet ring (1009) to rotate, and then the synchronous rotation of the magnetic suspension end (1002) abutted against the rotor is realized, so that the metal core wire in the threading hole (101) is slowly rotated around the axis of the metal core wire while advancing.
  2. 2. The high Wen Bianping small die head according to claim 1, wherein the die core (1) is of conical configuration.
  3. 3. The high Wen Bianping small die head according to claim 2, wherein a core locating pin for fixedly connecting the locating head (202) is provided in the locating head (102).
  4. 4. A high Wen Bianping die head according to claim 3, characterised in that a mould runner spacer (601) supporting the buffer space (6) is provided between the locating head (102) and the spacing head (202), the mould core locating pin passing through the mould runner spacer (601).
  5. 5. The high Wen Bianping small die head according to claim 4, wherein a direction positioning pin (302) for connecting the positioning head (102) is provided in the movement (3), and a movement positioning screw (303) and a movement positioning pin (304) for connecting the main body (4) are provided in the movement (3).
  6. 6. The high Wen Bianping small die head as recited in claim 5, wherein wear resistant rubber rings are provided on the samarium cobalt rotor permanent magnet ring (1009) and the magnetic suspension end head (1002).
  7. 7. The high Wen Bianping die head as claimed in claim 6, wherein a guide circular groove (1101) is formed in the gland (8), and the gland (8) is provided with a hollow end seat (1102) of a rotary sleeve synchronous end head (1103) through the guide circular groove (1101).
  8. 8. The high Wen Bianping die head according to claim 7, wherein the number of high-pressure cavities (1109) is 2-6, and 2-6 high-pressure cavities (1109) are equidistantly arranged on the hollow end seat (1102) around the circumference of the synchronous end head (1103).
  9. 9. The high Wen Bianping die head according to claim 8, wherein the high-pressure chamber (1109) is of a three-way structure, and a one-way valve is provided in an outer port of the high-pressure chamber (1109) remote from the guide circular groove (1101).

Description

High-temperature flat die body machine head Technical Field The invention relates to the technical field of cable injection molding die heads, in particular to a high Wen Bianping die head. Background With the rapid increase of the demand of the market for fluoroplastic cables, the demands of extruder heads and dies for high-temperature resistant insulating materials such as silicone rubber, fluoroplastic such as polytetrafluoroethylene, FEP, PFA and the like, and polyether-ether-ketone and the like are rapidly increased. In order to meet the environmental protection production under the existing conditions, the plastic wastes are recycled, and the molten plastic wastes are particularly injected onto the cable through an injection molding machine to form a wrapping layer. The cable injection molding die head is formed by coating a plastic sheath on a metal core wire through injection molding, and as shown in fig. 15 and fig. 16 of the specification, the cable injection molding die head comprises a die core 100 and a die sleeve 200, wherein the die sleeve 200 is sleeved on the die core 100, an injection molding gap 300 is reserved between the die core 100 and the die sleeve, the metal core wire passes through the die core 100, the injection molding gap 300 coats the plastic sheath on the metal core wire, and then a main body 400 and a machine core 500 are arranged to be matched to encapsulate the die core 100 and the die sleeve 200, so that the precise injection molding die head is formed. The existing machine head mainly adopts a longer conical glue feeding structure, so that the residence time of the glue in the machine head can be increased, and the glue can be dispersed, mixed and plasticized for a more sufficient time, so that the purposes of improving the uniformity and compactness of the glue are achieved. In the extrusion molding process, the rubber material can be subjected to strong extrusion and shearing action when being pressed into a small-diameter die from a large-diameter machine barrel, and the longer conical structure can enable the rubber material to be better adapted to the change, so that more sufficient shearing and mixing are obtained. The taper angle can influence extrusion pressure and speed, the taper angle is large, the extrusion speed is high, the semi-finished product is smooth and compact, and the shrinkage rate is large. To compensate for such uneven dispersion due to the taper angle, the nose is usually intentionally lengthened to allow sufficient time for the dispersion of the gum material within the nose, thereby improving the quality of the product. This just also leads to current aircraft nose structure generally longer, and the big problem of plastics waste material consumptive material volume causes the plastics waste in the cable processing of moulding plastics seriously extravagant. The utility model provides a novel injection molding machine that possesses self-cooling die body aircraft nose like the application number CN202221446446.3 of current high temperature resistant corrosion-resistant aircraft nose, wherein self-cooling die body aircraft nose includes the internal thread connecting seat, tip backup pad, cavity extrusion head, connecting screw hole, quick detach cooling frame structure and business turn over water pipe, for extension fuse-element cooling time, generally adopt normal atmospheric temperature toper advances gluey structure, aircraft nose overall dimension is longer, and the appearance of the consumable mould that uses is also longer, because the alloy material price that this type of aircraft nose and mould used is high, causes the manufacturing cost of cable producer to be high. Meanwhile, the traditional injection molding die head adopts a single traction effect to convey the metal core wire, the guide limit is realized only by virtue of a threading hole with the caliber slightly larger than that of the metal core wire, the metal core wire can be subjected to the influence of the acting force such as melt impact and the like to shake in the injection molding process, even the metal core wire which is in contact with the high-temperature melt can be subjected to expansion with heat and contraction with cold to a certain extent, the metal core wire which is lack of stable protection is difficult to be effectively contacted with the melt, the melt cannot form a complete coating effect on the metal core wire, and the melt can also cause the problems of burrs, concave-convex and the like on the surface due to the vibration effect after the injection molding die head is led out, so that the quality of injection molding products of the metal core wire cannot be ensured. Disclosure of Invention The invention aims to solve the problems that in the prior art, the injection molding die head structure process causes more material consumption of a melt and the injection molding quality of a cable is affected due to lack of stability, and provides a high Wen