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CN-224210512-U - Single-layer foaming machine head of supercritical fluid foaming blow molding machine

CN224210512UCN 224210512 UCN224210512 UCN 224210512UCN-224210512-U

Abstract

The application relates to the technical field of supercritical fluid foaming, in particular to a single-layer foaming machine head of a supercritical fluid foaming blow molding machine, which comprises a mounting plate, wherein an outer die body is arranged at the lower part of the mounting plate in a fixed structure mode, a lower die mouth is arranged at the lower part of the outer die body, an inner die body is arranged in the lower die mouth, the inner die body is connected with a lifting core rod to drive the inner die body to move vertically, the lifting core rod is connected with a first power piece, an inner core rod, a middle core rod and an outer core rod are sequentially sleeved between the lifting core rod and the outer die body from inside to outside, the upper ends of the inner core rod and the middle core rod are respectively fixedly connected with the mounting plate, the outer core rod is connected with a second power piece to enable the outer core rod to slide vertically, two V-shaped guide grooves are symmetrically formed in the outer peripheral surface of the inner core rod, two ends of the two V-shaped guide grooves are communicated, rotary shearing flow of a spiral flow channel is converted into axial laminar flow, foam hole breakage is reduced, the outer peripheral surface of the inner core rod at the upper part of the V-shaped guide groove is provided with an arc-shaped guide groove, and the end part of the V-shaped guide groove is communicated with the arc guide groove.

Inventors

  • ZHANG JIANQUN
  • DAI QIANG
  • ZHANG CHAO
  • YANG RUFANG

Assignees

  • 山东通佳智能装备有限公司

Dates

Publication Date
20260508
Application Date
20250418

Claims (7)

  1. 1. A single-layer foaming machine head of a supercritical fluid foaming blow molding machine, which is characterized by comprising: The device comprises a mounting plate (1), wherein an outer die body (2) is arranged at the lower part of the mounting plate (1) in a fixed structure mode, and a lower die mouth (3) is arranged at the lower part of the outer die body (2); the inner die body (4), the inner die body (4) is set up in the lower die mouth (3); The lifting core rod (5), the lifting core rod (5) is connected with the inner die body (4) to drive the inner die body (4) to move vertically; The first power piece (6), the first power piece (6) is connected with the lifting rod (5) to drive the lifting rod to move; The inner core rod (7), the middle core rod (8) and the outer core rod (9), wherein the inner core rod (7), the middle core rod (8) and the outer core rod (9) are sequentially sleeved between the lifting core rod (5) and the outer die body (2), the upper ends of the inner core rod (7) and the middle core rod (8) are fixedly connected with the mounting plate (1) respectively, and the outer core rod (9) is vertically arranged between the middle core rod (8) and the outer die body (2) in a sliding manner; The second power piece (10), the second power piece (10) links to each other with outer core rod (9) in order to drive it to move; The V-shaped guide grooves (11), the two V-shaped guide grooves (11) are symmetrically arranged on the outer circumferential surface of the inner core rod (7), and the two ends of the two V-shaped guide grooves (11) are communicated; the arc-shaped guide groove (12), the arc-shaped guide groove (12) is arranged on the outer peripheral surface of the inner core rod (7) at the upper part of the V-shaped guide groove (11), and the arc-shaped guide groove (12) is communicated with the end part of the V-shaped guide groove (11); And a feed inlet (13) communicated with the arc-shaped guide chute (12) is also arranged.
  2. 2. The single-layer foaming machine head of the supercritical fluid foaming blow molding machine according to claim 1, wherein the depth of the arc-shaped guide groove (12) is larger than that of the V-shaped guide groove (11).
  3. 3. The single-layer foaming machine head of the supercritical fluid foaming blow molding machine according to claim 2, wherein the bottom of the arc-shaped guide groove (12) is in a slope-shaped structure and transits to the bottom of the V-shaped guide groove (11).
  4. 4. A single-layer foaming machine head of a supercritical fluid foaming blow molding machine according to claim 3, wherein the width of the arc-shaped guide groove (12) is larger than that of the V-shaped guide groove (11).
  5. 5. The single-layer foaming machine head of the supercritical fluid foaming blow molding machine according to claim 1 is characterized in that a sleeve (14) is arranged between the mounting plate (1) and the outer mold body (2) in a fixed structure mode, the sleeve (14) is sleeved outside the middle core rod (8), and the outer core rod (9) is arranged at the lower part of the sleeve (14); the feed inlet (13) passes through the sleeve (14) and the middle core rod (8) to be communicated with the middle part of the arc-shaped guide chute (12).
  6. 6. The single-layer foaming machine head of the supercritical fluid foaming blow molding machine according to claim 5, wherein a fixed rod (15) connected with a second power piece (10) is arranged above the mounting plate (1), the second power piece (10) is a discharging oil cylinder, a push rod (16) is fixedly arranged on an output shaft of the discharging oil cylinder, and the push rod (16) penetrates through the sleeve (14) to be connected with the outer core rod (9).
  7. 7. The single-layer foaming machine head of the supercritical fluid foaming blow molding machine according to claim 6, wherein the discharging oil cylinder is fixedly connected with the first power piece (6), and the first power piece (6) is a wall thickness adjusting oil cylinder.

Description

Single-layer foaming machine head of supercritical fluid foaming blow molding machine Technical field: the application relates to the technical field of supercritical fluid foaming, in particular to a single-layer foaming machine head of a supercritical fluid foaming blow molding machine. The background technology is as follows: Chinese patent No. 201920164308.8-a supercritical fluid extrusion blow molding foaming molding apparatus, which comprises a feeding system, a twin screw extruder, an air inlet valve, a pressure air pump, a connector I, a dynamic mixer, a connector II, a melt pump, a connector III, a single screw extruder, a crosshead and a blow mold. The feeding system is arranged at a feeding section of the double-screw extruder, the air inlet valve is connected with the pressure air pump and a melting section of the double-screw extruder through the air conveying pipe, the connector I is connected with the double-screw extruder and the dynamic mixer, the connector II is connected with the dynamic mixer and the melt pump, the connector III is connected with the melt pump and the single-screw extruder, the right-angle machine head is arranged at a discharging end of the single-screw extruder, and the blow molding die is arranged below the right-angle machine head. The device is suitable for thermoplastic polymers, realizes the production of extrusion blow molding foaming products by using supercritical fluid, and has the characteristics of simple structure, reduced cost, environmental protection, convenient operation and control and the like. However, the right-angle machine head used by the supercritical fluid blow molding machine is still a spiral runner machine head of a common blow molding machine, such as a die head with a variable storage bin structure in the application number of CN202123150577.5 of my company, and when the die head is used for producing a melt fused with the supercritical fluid, foam holes are easily broken in the foaming process in the die head, so that the product quality is affected. The utility model comprises the following steps: In order to solve the technical problems, the utility model provides a single-layer foaming machine head of a supercritical fluid foaming blow molding machine, and solves the technical problems that the existing machine head is easy to cause cell breakage in actual production and affects the product quality. In order to solve the technical problems, the utility model adopts the following technical scheme: A supercritical fluid foaming blow molding machine single layer foaming machine head, comprising: The lower part of the mounting plate is provided with an outer die body in a fixed structure mode, and the lower part of the outer die body is provided with a lower die mouth; the inner die body is arranged in the mouth of the lower die; the lifting core rod is connected with the inner die body to drive the inner die body to move vertically; the first power piece is connected with the lifting rod to drive the lifting rod to move; The inner core rod, the middle core rod and the outer core rod are sequentially sleeved between the lifting core rod and the outer die body, the upper ends of the inner core rod and the middle core rod are fixedly connected with the mounting plate respectively, and the outer core rod is vertically arranged between the middle core rod and the outer die body in a sliding manner; the second power piece is connected with the outer core rod to drive the outer core rod to move; the two V-shaped guide grooves are symmetrically formed in the outer circumferential surface of the inner core rod, and two ends of the two V-shaped guide grooves are communicated; the arc-shaped guide groove is formed in the outer peripheral surface of the inner core rod at the upper part of the V-shaped guide groove and is communicated with the end part of the V-shaped guide groove; and a feed inlet communicated with the arc-shaped guide chute is also formed. Further, the arc-shaped guide chute is larger than the V-shaped guide chute. Further, the bottom of the arc-shaped guide chute is in a slope-shaped structure and transits to the bottom of the V-shaped guide chute. Further, the width of the arc-shaped guide chute is larger than that of the V-shaped guide chute. Further, a sleeve is arranged between the mounting plate and the outer die body in a fixed structure mode, the sleeve is sleeved outside the middle core rod, and the outer core rod is arranged at the lower part of the sleeve; The feeding hole passes through the sleeve and the middle core rod and is communicated with the middle part of the arc-shaped guide chute. Further, a fixed rod connected with a second power piece is arranged above the mounting plate, the second power piece is a discharging oil cylinder, a push rod is fixedly arranged on an output shaft of the discharging oil cylinder, and the push rod penetrates through the sleeve and is connected with the outer core rod. Further, the d