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CN-224224515-U - Extrusion blow molding equipment for PFA film adhesive tape

CN224224515UCN 224224515 UCN224224515 UCN 224224515UCN-224224515-U

Abstract

The utility model discloses PFA film adhesive tape extrusion blow molding equipment, which comprises an equipment main body, wherein an annular mouth mold is arranged at the bottom end of the equipment main body, a film blank is arranged at the inner side of the annular mouth mold, an air outlet is formed in the bottom end of the film blank, an inner cooling cylinder is arranged at the bottom end of the film blank, a spiral diversion channel is formed in the outer wall of the inner cooling cylinder, a blowing pipe is arranged at the top of the inner cooling cylinder, an outer cooling cylinder is arranged at the bottom end of the equipment main body at the outer side of the annular mouth mold, a cooling air cavity is formed in the bottom of the outer cooling cylinder, and equidistant blowing holes are formed in the inner wall of the outer cooling cylinder at the position of the cooling air cavity. The utility model adopts a cooling mode of combining external cooling and internal cooling, improves the integral cooling effect of the film bubble, is beneficial to shaping the film bubble, and improves the cooling efficiency and the quality stability of the PFA film adhesive tape.

Inventors

  • TANG JING
  • SHAO ZHENYA
  • XIE SHUANGCAI

Assignees

  • 泰州市晨光塑业有限公司

Dates

Publication Date
20260512
Application Date
20250427

Claims (8)

  1. 1. The utility model provides a PFA film sticky tape extrusion blow molding equipment, includes equipment main part (1), annular bush (2) are installed to the bottom of equipment main part (1), membrane base (3) are installed to the inboard of annular bush (2), just the bottom of membrane base (3) is provided with air outlet (11), a serial communication port, interior cooling tube (4) are installed to the bottom of membrane base (3), just be provided with spiral water conservancy diversion passageway (12) on the outer wall of interior cooling tube (4), the top of interior cooling tube (4) is provided with blowpipe (13), outer cooling tube (5) are installed to equipment main part (1) bottom in annular bush (2) outside, just the bottom of outer cooling tube (5) is provided with cooling air chamber (6), be provided with equidistant blast hole (14) on the inner wall of cooling air chamber (5), blast hole (14) and cooling air chamber (6) intercommunication, one side of equipment main part (1) is installed and is handled case (7), and on the outer wall (7) of cooling air inlet box (8) are handled to one side is installed to air inlet (9) on the outer wall of cooling air chamber (7).
  2. 2. The extrusion blow molding equipment for PFA film adhesive tape according to claim 1, wherein the blowing pipe (13) is embedded in the spiral diversion channel (12), and the blowing pipe (13) is of a flat structure.
  3. 3. The PFA film adhesive tape extrusion blow molding equipment according to claim 1, wherein a dust removing filter plate (18) is arranged in the cold air treatment box (7), and the bottom end of the dust removing filter plate (18) extends into a first positioning seat (17) at the bottom of the cold air treatment box (7).
  4. 4. The PFA film adhesive tape extrusion blow molding equipment according to claim 3, wherein the top end of the dust removal filter plate (18) penetrates through a first open groove (21) at the top end of the cold air treatment box (7) and is fixedly connected with the cold air treatment box (7) through a bolt, a first sealing gasket (22) is adhered to the inner wall of the first open groove (21), and the first sealing gasket (22) is tightly adhered to the dust removal filter plate (18).
  5. 5. The PFA film adhesive tape extrusion blow molding equipment according to claim 3, wherein a moisture absorption plate (20) is arranged in the cold air treatment box (7) at one side of the dust removal filter plate (18), and the bottom end of the moisture absorption plate (20) extends into a second positioning seat (19) at the bottom of the cold air treatment box (7).
  6. 6. The PFA film adhesive tape extrusion blow molding equipment according to claim 5, wherein the top end of the moisture absorption plate (20) penetrates through a second open groove (23) at the top end of the cold air treatment box (7) and is fixedly connected with the cold air treatment box (7) through a bolt, a second sealing gasket (24) is adhered to the inner wall of the second open groove (23), and the second sealing gasket (24) is tightly adhered to the moisture absorption plate (20).
  7. 7. A PFA film tape extrusion blow molding apparatus as recited in claim 1, wherein said main air outlet pipe (9) is communicated with said blowing pipe (13) through a first air guiding branch pipe (15), and said main air outlet pipe (9) is communicated with said cooling air chamber (6) through a second air guiding branch pipe (16).
  8. 8. The extrusion blow molding equipment for PFA film adhesive tape according to claim 1, wherein a pulling roll (10) is mounted at the bottom of the equipment body (1).

Description

Extrusion blow molding equipment for PFA film adhesive tape Technical Field The utility model relates to the technical field of PFA film adhesive tape production, in particular to PFA film adhesive tape extrusion blow molding equipment. Background PFA is used as a high-performance fluoroplastic, has the corrosion resistance of Polytetrafluoroethylene (PTFE) and the processing convenience of thermoplastic materials, is suitable for manufacturing high-temperature-resistant and chemical-corrosion-resistant film products, and is a technology for processing a poly (perfluoroethylene-Propylene) (PFA) resin into a film or an adhesive tape by using an extrusion blow molding process, and finally forms a PFA film adhesive tape finished product through resin melting and extrusion, inflation molding, cooling shaping, flattening and rolling. Extrusion blow molding is one of the key links, and the expansion film bubble needs to be cooled and shaped in time during blow molding, however, the existing extrusion blow molding equipment generally only cools from the outside, and the heat accumulation in the film bubble is difficult to radiate, so that the integral cooling effect of the film bubble is not ideal enough, the shaping of the film bubble is not facilitated, and the quality stability of the PFA film adhesive tape production is affected, so that improvement is needed. Disclosure of utility model The utility model aims to provide a PFA film adhesive tape extrusion blow molding device for solving the problems in the background art. In order to achieve the above purpose, the PFA film adhesive tape extrusion blow molding equipment comprises an equipment main body, wherein an annular mouth mold is arranged at the bottom end of the equipment main body, a film blank is arranged on the inner side of the annular mouth mold, an air outlet is formed in the bottom end of the film blank, an inner cooling cylinder is arranged at the bottom end of the film blank, a spiral diversion channel is formed in the outer wall of the inner cooling cylinder, a blow pipe is arranged at the top of the inner cooling cylinder, an outer cooling cylinder is arranged at the bottom end of the equipment main body on the outer side of the annular mouth mold, a cooling air cavity is formed in the bottom of the outer cooling cylinder, equidistant blow holes are formed in the inner wall of the outer cooling cylinder at the position of the cooling air cavity and are communicated with the cooling air cavity, a cold air treatment box is arranged on one side of the equipment main body, an air inlet pipe is arranged on the outer wall of the other side of the cold air treatment box, and a main air outlet pipe is arranged on the outer wall of the other side of the cold air treatment box. Preferably, the blowing pipe is embedded in the spiral diversion channel, and the blowing pipe is of a flat structure. Preferably, the inside of cold wind treatment case is provided with the dust removal filter plate, just the bottom of dust removal filter plate extends to in the first positioning seat of cold wind treatment case bottom, and the dust removal filter plate removes dust to gas, reduces the pollution of dust to the membrane bubble. Preferably, the top of the dust removal filter plate penetrates through a first open slot at the top of the cold air treatment box and is fixedly connected with the cold air treatment box through a bolt, a first sealing gasket is adhered to the inner wall of the first open slot, the first sealing gasket is tightly attached to the dust removal filter plate, and the tightness of the dust removal filter plate and the first open slot is improved. Preferably, the inside moisture absorption board that is provided with of cold wind treatment case of dust removal filter plate one side, just the bottom of moisture absorption board extends to in the second positioning seat of cold wind treatment case bottom, and the moisture absorption board is dry gas. Preferably, the top of the moisture absorption plate penetrates through the second opening groove at the top of the cold air treatment box and is fixedly connected with the cold air treatment box through a bolt, and a second sealing gasket is adhered to the inner wall of the moisture absorption plate, and the second sealing gasket is tightly attached to the moisture absorption plate, so that the tightness of the moisture absorption plate and the second opening groove is improved. Preferably, the air outlet main pipe is communicated with the blowing pipe through a first air guide branch pipe, and the air outlet main pipe is communicated with the cooling air cavity through a second air guide branch pipe. Preferably, a traction roller is arranged at the bottom of the equipment main body, so that the PFA film adhesive tape can be conveniently pulled. Compared with the prior art, the utility model has the beneficial effects that: The cooling gas is conveyed to the inside of the cold air treatment box thro