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CN-224224492-U - Vacuum sizing water jacket for plastic mother film extrusion production line

CN224224492UCN 224224492 UCN224224492 UCN 224224492UCN-224224492-U

Abstract

The utility model relates to a vacuum sizing water jacket for a plastic mother film extrusion production line, which comprises a vacuum shell, a sizing sleeve arranged in the vacuum shell, a water ring sealing sleeve arranged on the outer side of the vacuum sizing sleeve in a surrounding manner, a cooling water inlet communicated with the water ring sealing sleeve, a cooling inclined hole arranged at a preset inclined angle along the pipe wall of the sizing sleeve, a vacuum suction port arranged on the vacuum shell, a cooling water outlet arranged at the bottom of the water ring sealing sleeve, a spray pipeline arranged on the shell, and a spray pipeline, wherein the spray pipeline comprises a folding piece arranged on the inner side of the vacuum shell, a plurality of mounting plates linearly arranged in the folding piece, and folding nozzles fixedly arranged on the plurality of mounting plates, the spray pipeline is folded or unfolded through the folding piece, the folding piece is contracted and arranged in the shell, and a plurality of folding nozzles arranged in the folding piece can be driven to incline according to the insertion and unfolding of the sizing sleeve, so that the folding nozzles and the cooling inclined holes have the same inclined angle.

Inventors

  • LI DONGDONG
  • WANG HUI
  • SUN WEIDONG
  • Mo Yulei
  • CAO YUANYUAN
  • ZHOU KAIXIANG
  • WU JIAXIAN
  • CAO YUJIN

Assignees

  • 浙江众成包装材料股份有限公司

Dates

Publication Date
20260512
Application Date
20250514

Claims (6)

  1. 1. The utility model provides a vacuum sizing water jacket for plastic film extrusion line, includes, vacuum housing (100), set up in sizing sleeve pipe (101) in vacuum housing (100), encircle set up in water ring seal cover (102) in sizing sleeve pipe (101) outside, with water ring seal cover (102) intercommunication cooling water import (103), follow cooling inclined hole (104) that sizing sleeve pipe (101) pipe wall set up with preset inclination, set up in vacuum suction port (105) on vacuum housing (100), set up in cooling water export (106) of water ring seal cover (102) bottom, and set up in spray line (107) on vacuum housing (100), its characterized in that: The spraying pipeline (107) comprises a folding piece (107 a) arranged on the inner side of the vacuum shell (100), a plurality of mounting plates (107 b) linearly arranged in the folding piece (107 a), and folding nozzles (107 c) fixedly arranged on the plurality of mounting plates (107 b); The spraying pipeline (107) is folded or unfolded through the folding piece (107 a), the folding piece (107 a) is contracted and arranged in the vacuum shell (100), and can be unfolded according to the insertion of the sizing sleeve (101) to drive a plurality of folding nozzles (107 c) arranged in the folding piece (107 a) to incline, so that the folding nozzles (107 c) and the cooling inclined holes (104) have the same inclination angle.
  2. 2. The vacuum sizing water jacket for the plastic mother film extrusion production line according to claim 1, wherein the sizing sleeve (101) is further provided with a positioning piece (108), the sizing sleeves (101) with different diameters can drive folding pieces (107 a) to be unfolded, and the positioning piece (108) comprises: The fixed plate (108 a), one side of the fixed plate (108 a) is fixedly connected with the sizing sleeve (101); the positioning round table (108 b) is fixedly connected with the other side of the fixed plate (108 a); The positioning through hole (108 c) penetrates through the fixing plate (108 a) and the positioning round table (108 b) and is coaxially communicated with the inner cavity of the sizing sleeve (101); The positioning sleeve (108 d) is sleeved on the outer side of the positioning round table (108 b), the diameter of the inner cavity of the positioning sleeve (108 d) is the same as that of the inner cavity of the sizing sleeve (101), and the inner inclined surface of the positioning sleeve is clamped with the inclined surface of the positioning round table (108 b) to realize positioning; And one end of the connecting rod (108 e) is rotatably connected with the end part of the folding piece (107 a) through a hinge, the other end of the connecting rod is connected with the positioning sleeve (108 d), and the positioning sleeve (108 d) is pushed outwards by the insertion force of the sizing sleeve (101) to drive the folding piece (107 a) to be unfolded synchronously.
  3. 3. Vacuum sizing water jacket for plastic mother film extrusion line according to claim 2, characterized in that the vacuum housing (100) is provided inside with vertical nozzles (109).
  4. 4. A vacuum sizing water jacket for a plastic mother film extrusion line as recited in claim 3, characterized in that a lifting rod (110) is further provided on the vertical nozzle (109).
  5. 5. Vacuum sizing water jacket for plastic mother film extrusion line according to claim 2, characterized in that the folding piece (107 a) comprises a mounting block (107 a-1) fixedly arranged inside the vacuum housing (100); a sliding rail (107 a-2) vertically arranged on the mounting block (107 a-1); A connecting rod group (107 a-3), one end of which is hinged to the mounting block (107 a-1) and the other end of which is rotatably connected with the connecting rod (108 e); A slide rod (107 a-4) arranged in the slide rail (107 a-2) and abutting against the end of the link group (107 a-3); And a compression spring (107 a-5) sleeved on the sliding rod (107 a-4), wherein one end of the compression spring is abutted against the mounting block (107 a-1), and the other end of the compression spring is abutted against the sliding rod (107 a-4).
  6. 6. The vacuum sizing water jacket for the plastic mother film extrusion production line according to claim 1, wherein an observation hole (111) is formed in the vacuum shell (100) for observing the spraying condition of the tube blank.

Description

Vacuum sizing water jacket for plastic mother film extrusion production line Technical Field The utility model relates to the technical field of molding equipment, in particular to a vacuum sizing water jacket for a plastic mother film extrusion production line. Background In the extrusion molding process of plastic pipes, the pipes are extruded by an extruder at high temperature and then are subjected to sizing and cooling so as to ensure that the external diameter of the pipes is accurate, the surface of the pipes is smooth and the internal structure of the pipes is compact. The vacuum sizing water jacket is used as an important component of an extrusion production line, and is used for rapidly shaping and cooling pipes by forming a negative pressure environment and a cooling water film around the sizing sleeve. The existing vacuum sizing water jacket is mainly provided with a cooling straight hole on the sizing sleeve for spraying cooling water to cool the pipe blank, but because the cooling straight hole is perpendicular to the sizing sleeve wall, when the pipe blank is easy to be in violent scouring contact with the cooling water flow in the moving process, the surface of the pipe blank is damaged or scratched, impurities are formed, the cooling water is polluted, and the cooling efficiency and the forming precision of the subsequent sizing sleeve are affected. In addition, traditional cooling sprays the structure and is fixed usually, can't carry out nimble adjustment according to the tubular product of different specifications, leads to cooling inequality easily, reduces the uniformity and the shaping quality of finished product tubular product. Disclosure of utility model The utility model aims to provide a vacuum sizing water jacket for a plastic mother film extrusion production line, which aims to solve the problems in the prior art. The vacuum sizing water jacket for the plastic mother film extrusion production line comprises a vacuum shell, a sizing sleeve arranged in the vacuum shell, a water ring sealing sleeve surrounding the outer side of the vacuum sizing sleeve, a cooling water inlet communicated with the water ring sealing sleeve, a cooling inclined hole arranged at a preset inclined angle along the pipe wall of the sizing sleeve, a vacuum suction port arranged on the vacuum shell, a cooling water outlet arranged at the bottom of the water ring sealing sleeve, and a spray pipeline arranged on the shell, wherein the spray pipeline comprises a folding piece arranged on the inner side of the vacuum shell, a plurality of mounting plates linearly arranged in the folding piece and a plurality of folding nozzles fixedly arranged on the mounting plates, the spray pipeline is folded or unfolded through the folding piece, the folding piece is contracted and arranged in the shell, and can drive the folding nozzles arranged in the folding piece to incline according to the insertion and unfolding of the sizing sleeve, so that the folding nozzles have the same inclined angle as the cooling inclined holes. The sizing sleeve is also provided with a positioning piece, the sizing sleeves with different diameters can drive the folding piece to be unfolded, the positioning piece comprises a fixing plate, a positioning round table and a positioning through hole, one side of the fixing plate is fixedly connected with the sizing sleeve, the positioning round table is fixedly connected with the other side of the fixing plate, the positioning through hole penetrates through the fixing plate and the positioning round table and is coaxially communicated with the inner cavity of the sizing sleeve, the positioning sleeve is sleeved on the outer side of the positioning round table, the inner cavity of the positioning sleeve is the same as the inner cavity of the sizing sleeve in diameter and is clamped with the inclined surface of the positioning round table through the inner inclined surface of the positioning sleeve to realize positioning, one end of the connecting rod is rotatably connected with the end of the folding piece through hinging, the other end of the connecting rod is connected with the positioning sleeve, and the sizing sleeve inserting force pushes the positioning sleeve outwards to drive the folding piece to be unfolded synchronously. Preferably, a vertical nozzle is arranged on the inner side of the vacuum shell, and the spraying direction of the vertical nozzle is perpendicular to the axial direction of the sizing sleeve to cool the front end of the inclined spraying section. Preferably, the vertical nozzle is further provided with a lifting rod. Preferably, the folding piece comprises a mounting block fixedly arranged on the inner side of the vacuum shell, a sliding rail vertically arranged on the mounting block, a connecting rod group, a sliding rod, a compression spring and a compression spring, wherein one end of the connecting rod group is hinged to the mounting block, the other end of the conn