Search

CN-224210464-U - Single spiral exhaust extruder for producing medical PET (polyethylene terephthalate) sheet

CN224210464UCN 224210464 UCN224210464 UCN 224210464UCN-224210464-U

Abstract

The utility model discloses a single-screw exhaust extruder for producing medical PET sheets, which comprises a supporting box, wherein a screw cylinder is fixedly connected to the front end shaft center part of the supporting box, a feed hopper is arranged at the feeding end of the screw cylinder, a driving shaft is arranged at the rear end shaft center part of the supporting box, and one end of the driving shaft penetrates through the rear end of the supporting box and is fixedly connected with three sections of screws. This single spiral exhaust extruder of medical PET sheet production, after the plastic passes through trompil inner tube position, gas can be through the perforation introduction communicating pipe that trompil inner tube outer wall was seted up in, is passing through communicating pipe with gas and introducing the row hole discharge of intercommunication, wherein the condition that the perforation that the plastic was offered to trompil inner tube outer wall was blockked up can not appear, because the trompil inner tube can extrude the perforation in the transmission plastic, even the plastic of jam at perforation position also can be broken through.

Inventors

  • XU HAO
  • MA YANLI

Assignees

  • 浙江长兴铭迪智能装备有限公司

Dates

Publication Date
20260508
Application Date
20250609

Claims (6)

  1. 1. A single-screw exhaust extruder for producing medical PET sheets comprises a supporting box (1) and is characterized in that a screw cylinder (4) is fixedly connected to the front end shaft center of the supporting box (1), a feed hopper (2) is installed at the feed end of the screw cylinder (4), a driving shaft (3) is installed at the rear end shaft center of the supporting box (1), one end of the driving shaft (3) penetrates through the rear end of the supporting box (1) and is fixedly connected with a screw three-section (15), one end, far away from the driving shaft (3), of the screw three-section (15) is fixedly connected with a screw two-section (14), one end, far away from the screw three-section (15), of the screw two-section (14) is provided with a screw one-section (13), and an exhaust disc assembly (12) is arranged between the screw one-section (13) and the screw two-section (14).
  2. 2. The single-screw exhaust extruder for producing medical PET sheets according to claim 1, wherein one end of the screw cylinder (4) far away from the supporting box (1) is provided with a first fixing plate (5), all surrounding parts of one end of the first fixing plate (5) far away from the screw cylinder (4) are fixedly connected with guide posts (8), and the outer wall of the guide posts (8) is slidably connected with a movable plate (6).
  3. 3. The single-screw exhaust extruder for producing medical PET sheets according to claim 2, wherein a front plate (11) is arranged at one end of the movable plate (6) far away from the first fixed plate (5), the front plate (11) is in sliding connection with the outer wall of the guide post (8), and the top of the guide post (8) is fixedly connected with the second fixed plate (10).
  4. 4. The single-screw exhaust extruder for producing medical PET sheets according to claim 3, wherein a push rod is arranged at the center of the top of the second fixing plate (10), the bottom of the push rod penetrates through the top of the second fixing plate (10) and is fixedly connected with the surface of the front plate (11), and an air cylinder (9) is arranged at the pushing end of the push rod.
  5. 5. The single-screw exhaust extruder for producing medical PET sheets according to claim 1, wherein the exhaust disc assembly (12) comprises a mounting disc (16), an inner shaft sleeve (18) is arranged at the central part of the mounting disc (16), an open-pore inner tube (20) is fixedly connected to the shaft center part of the inner shaft sleeve (18), a communicating tube (21) is fixedly connected to the open-pore part, and bolt holes (19) are formed in the periphery of the upper surface of the inner shaft sleeve (18).
  6. 6. The single-screw exhaust extruder for producing medical PET sheets according to claim 5, wherein a communicating pipe (21) is arranged on the outer wall of the perforated inner pipe (20), a row hole (17) is formed on the outer wall of the mounting plate (16), and the communicating pipe (21) is installed in a communicating manner with the row hole (17).

Description

Single spiral exhaust extruder for producing medical PET (polyethylene terephthalate) sheet Technical Field The utility model relates to the field of exhaust extruders, in particular to a single-screw exhaust extruder for producing medical PET (polyethylene terephthalate) sheets. Background In the medical field, polymer materials are widely used because of their excellent properties, and polyethylene terephthalate (PET) sheets are important in medical packaging, medical device components, and the like due to their good mechanical properties, chemical stability, transparency, and biocompatibility. With the continuous development of medical technology, higher requirements are put on the quality and production efficiency of medical PET sheets. Conventional PET sheet production extrusion equipment has some limitations in the production process. Firstly, the PET raw material easily absorbs moisture in the processing process, and the existence of the moisture can cause the problems of bubble generation, degradation and the like in the extrusion process of the sheet, thereby influencing the performance and appearance quality of the sheet. Disclosure of utility model The utility model aims to provide a single-screw exhaust extruder for producing medical PET sheets, which solves the problems in the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a single spiral exhaust extruder of medical PET sheet production, includes the supporting box, the front end hub portion position fixedly connected with screw rod section of thick bamboo of supporting box, the feeder hopper is installed to screw rod section of thick bamboo feed end, the drive shaft is installed to the rear end hub portion position of supporting box, the rear end of supporting box is run through to the one end of drive shaft to fixedly connected with screw rod syllogic, the one end fixedly connected with screw rod second section of drive shaft is kept away from to the screw rod syllogic, screw rod first section is installed to the one end that screw rod syllogic was kept away from to the screw rod second section, be provided with the exhaust disc assembly between screw rod first section and the screw rod second section. As a further scheme of the utility model, a first fixing plate is arranged at one end of the screw rod barrel far away from the supporting box, guide posts are fixedly connected to the periphery of one end of the first fixing plate far away from the screw rod barrel, and a movable plate is connected to the outer wall of the guide post in a sliding manner. As a still further scheme of the utility model, a front plate is arranged at one end of the movable plate far away from the first fixed plate, the front plate is in sliding connection with the outer wall of the guide post, and the top of the guide post is fixedly connected with the second fixed plate. As a still further proposal of the utility model, a push rod is arranged at the center of the top of the second fixed plate, the bottom of the push rod penetrates through the top of the second fixed plate and is fixedly connected with the surface of the front plate, and an air cylinder is arranged at the pushing end of the push rod. As a still further scheme of the utility model, the exhaust disc assembly comprises a mounting disc, an inner shaft sleeve is arranged at the central part of the mounting disc, an open-pore inner tube is arranged at the axial center part of the inner shaft sleeve, a communicating pipe is fixedly connected at the open-pore part, and bolt holes are formed around the upper surface of the inner shaft sleeve. As a still further scheme of the utility model, the outer wall of the perforated inner pipe is provided with a communicating pipe, the outer wall of the mounting plate is provided with a row hole, and the communicating pipe is communicated with the row hole. Compared with the prior art, the utility model has the beneficial effects that: The utility model discloses, install the exhaust disc assembly between screw rod one section and screw rod two sections, after the plastic passes through trompil inner tube position, in the perforation that gas can be offered through trompil inner tube outer wall was led into communicating pipe, pass through communicating pipe with gas and pass into the hole discharge of intercommunication, wherein the condition that the perforation that the plastic offered the trompil inner tube outer wall was blocked up can not appear, because the trompil inner tube can extrude the perforation in the transmission plastic, even block up the plastic at perforation position also can be broken through, its structure is more optimized, the design is more reasonable. Drawings Fig. 1 is a schematic structural view of a single screw venting extruder for the production of medical PET sheets. Fig. 2 is a cross-sectional view of a single screw vented