Polyethylene terephthalate (PET) sheet production extruder

Abstract

The utility model discloses a PET (Polyethylene Terephthalate) sheet production extruder and belongs to the technical field of PET sheet production equipment. Comprising a hopper, a heated extrusion barrel is arranged below the hopper, a supporting seat is arranged at the bottom of the heated extrusion barrel, a dustproof shell is arranged on one side of the supporting seat, and a semiconductor refrigerator is arranged at the upper end of the dustproof shell. The utility model solves the problems that the extrusion equipment in the prior art cannot perform molding processing simultaneously after extruding raw materials, needs to perform processing independently, is low in working efficiency, is easy to block when the raw materials enter the blanking section from the hopper, and cannot perform pre-compression blanking on the raw materials, and the raw materials can be quickly molded after being extruded, so that the working efficiency is improved, and the production cost is reduced. The stirring rod is driven by the rotating shaft to stir the raw materials in the hopper, the phenomena that a pre-extrusion channel is blocked and discharging is difficult are avoided, the spiral blade is driven by the rotating shaft to conduct pre-compression discharging on the raw materials entering the pre-extrusion channel, and the extrusion efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PET sheet production equipment, in particular to a PET sheet production extruder. Background Art

[0002] PET sheet is a new popular plastic product, which needs to be extruded by an extruder during production;

[0003] A Chinese patent with announcement number CN217293432U discloses a PET sheet extruder: the patent has multiple heating rods distributed in a ring shape in a screw, and the screw can rotate, thereby driving the heating rods to rotate to form a dynamic and relatively uniform heating field, thereby making the material in the barrel heated more evenly.

[0004] However, although the above technology solves the problem of uneven heating of materials, it still has the following defects:

[0005] Existing extrusion equipment cannot perform molding processing at the same time after extruding the raw materials, and needs to be processed separately, which has low work efficiency, and the raw materials are easily blocked when entering the feeding section from the hopper, and the raw materials cannot be pre-compressed and fed. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0007] To this end, one purpose of the utility model is to propose a PET sheet production extruder, which enables the raw materials to be quickly formed after being extruded, thereby improving work efficiency. The stirring rod stirs the raw materials in the hopper driven by the rotating shaft to avoid clogging of the pre-extrusion channel and difficulty in feeding. The spiral blades pre-compress and feed the raw materials entering the pre-extrusion channel driven by the rotating shaft, thereby further improving the extrusion efficiency.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PET sheet production extruder, comprising a hopper, a heated extrusion barrel is arranged below the hopper, a support seat is arranged at the bottom of the heated extrusion barrel, a dustproof shell is arranged on one side of the support seat, a semiconductor refrigerator is arranged on the upper end of the dustproof shell, the hopper is fixedly connected to the heated extrusion barrel through a pre-extrusion channel, a first motor is installed on the upper end of the hopper, a feed pipe is arranged on one side of the first motor, and a rotating shaft is arranged on the output end of the first motor.

[0009] Preferably, a stirring rod and a spiral blade are respectively provided on the outer wall of the rotating shaft, the spiral blade is located inside the pre-extrusion channel, and the stirring rod is located inside the hopper.

[0010] Preferably, a second motor is installed on one side of the heated extrusion barrel, a screw conveying rod is provided on the output end of the second motor, and an extrusion cavity is fixedly provided on one end of the heated extrusion barrel away from the second motor.

[0011] Preferably, an inlet and outlet slot is provided on one side of the dustproof shell, a sealing cover is provided on one side of the inlet and outlet slot, and the sealing cover is rotatably connected to the dustproof shell through a hinge.

[0012] Preferably, a forming die is provided inside the dustproof shell, a discharge pipe is provided at the bottom of the extrusion cavity, and one end of the discharge pipe extends to the inside of the dustproof shell.

[0013] Preferably, an air outlet pipe is connected to the bottom of the semiconductor refrigerator, an air guide cover is connected to the lower end of the air outlet pipe, and a mesh cover is arranged inside the air guide cover.

[0014] Preferably, an induced draft fan is installed inside the air outlet pipe, guide fins are arranged above the induced draft fan, and a drying layer is arranged below the induced draft fan.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model enables the raw materials to be quickly formed after being extruded, thereby improving work efficiency. The stirring rod stirs the raw materials in the hopper under the drive of the rotating shaft to avoid clogging of the pre-extrusion channel and difficulty in feeding. The spiral blades pre-compress and feed the raw materials entering the pre-extrusion channel under the drive of the rotating shaft, thereby further improving the extrusion efficiency.

[0017] 2. The utility model reduces the pollution of the raw material molding environment by setting up a dustproof shell, cools the air through a semiconductor refrigerator, and blows the air to the molding mold through the mesh cover in the air guide cover under the action of the guide fins and the induced draft fan, so that the PET sheet can be quickly shaped. The drying layer is used to remove moisture from the humid air to obtain dry air, so that the PET sheet molding effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the heated extrusion barrel of the utility model;

[0020] Figure 3 It is a cross-sectional view of the hopper and the pre-extrusion channel of the utility model;

[0021] Figure 4 This is a cross-sectional view of the dustproof housing of the utility model;

[0022] Figure 5It is a schematic diagram of the internal structure of the air outlet pipe of the utility model.

[0023] In the figure: 1. hopper; 2. heated extrusion barrel; 3. dustproof shell; 4. semiconductor refrigerator; 101. pre-extrusion channel; 102. feed pipe; 103. first motor; 104. rotating shaft; 105. stirring rod; 106. spiral blade; 201. support seat; 203. second motor; 204. spiral conveying rod; 205. extrusion cavity; 206. discharge pipe; 301. sealing cover; 302. inlet and outlet slot; 303. forming mold; 401. outlet pipe; 402. guide fin; 403. induced draft fan; 404. drying layer; 405. air guide hood; 406. mesh cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In order to solve the technical problems in the prior art that the extrusion equipment cannot perform molding processing at the same time after extruding the raw materials, and needs to be processed separately, the work efficiency is low, and the raw materials are easily blocked when entering the feeding section from the hopper, and the raw materials cannot be pre-compressed and discharged, please refer to Figure 1-5 , providing the following technical solutions:

[0026] In this embodiment, a PET sheet production extruder includes a hopper 1, a heated extrusion barrel 2 is arranged below the hopper 1, a support seat 201 is arranged at the bottom of the heated extrusion barrel 2 for supporting the heated extrusion barrel 2, a dustproof shell 3 is arranged on one side of the support seat 201, a semiconductor refrigerator 4 is arranged on the upper end of the dustproof shell 3, the hopper 1 is fixedly connected to the heated extrusion barrel 2 through a pre-extrusion channel 101, a first motor 103 is installed at the upper end of the hopper 1, a feed pipe 102 is arranged on one side of the first motor 103, a rotating shaft 104 is arranged on the output end of the first motor 103, the raw material is fed into the hopper 1 through the feed pipe 102, the first motor 103 is started, and its output end drives the rotating shaft 104 to rotate.

[0027] In this embodiment, a stirring rod 105 and a spiral blade 106 are respectively provided on the outer wall of the rotating shaft 104. The spiral blade 106 is located inside the pre-extrusion channel 101, and the stirring rod 105 is located inside the hopper 1. The stirring rod 105 stirs the raw materials in the hopper 1 under the drive of the rotating shaft 104 to avoid clogging of the pre-extrusion channel 101 and difficulty in feeding. The spiral blade 106 pre-compresses and feeds the raw materials entering the pre-extrusion channel 101 under the drive of the rotating shaft 104, thereby further improving the extrusion efficiency.

[0028] In this embodiment, a second motor 203 is installed on one side of the heated extrusion barrel 2, and a spiral conveying rod 204 is provided on the output end of the second motor 203. An extrusion cavity 205 is fixedly provided at one end of the heated extrusion barrel 2 away from the second motor 203. A heating device for heating the raw material is provided on the outer wall of the heated extrusion barrel 2. By starting the second motor 203, the second motor 203 drives the spiral conveying rod 204 to drive and extrude the heated granular raw material into the extrusion cavity 205.

[0029] In this embodiment, an inlet and outlet groove 302 is provided on one side of the dustproof shell 3, a cover 301 is provided on one side of the inlet and outlet groove 302, and the cover 301 is rotatably connected to the dustproof shell 3 through a hinge, and a handle is provided on the outer wall of the cover 301, and the cover 301 is flipped by the handle so that the molding mold 303 can be taken out from the inlet and outlet groove 302.

[0030] A forming mold 303 is arranged inside the dustproof shell 3, a discharge pipe 206 is arranged at the bottom of the extrusion cavity 205, and one end of the discharge pipe 206 extends to the inside of the dustproof shell 3. A regulating valve is arranged in the discharge pipe 206 to realize quantitative feeding to the forming mold 303.

[0031] In this embodiment, an air outlet pipe 401 is connected to the bottom of the semiconductor refrigerator 4, and an air guide cover 405 is connected to the lower end of the air outlet pipe 401. A mesh cover 406 is provided inside the air guide cover 405. The semiconductor refrigerator 4 is used to quickly cool the molding mold 303 for molding.

[0032] An induced draft fan 403 is installed inside the air outlet pipe 401, a guide fin 402 is arranged above the induced draft fan 403, and a drying layer 404 is arranged below the induced draft fan 403. The cooled air is blown toward the forming mold 303 through the mesh cover 406 in the air guide cover 405 under the guidance of the guide fin 402 and the induced draft fan 403. The drying layer 404 is used to remove moisture from the humid air to obtain dry air, so that the PET sheet forming effect is better.

[0033] Working principle: When in use, first feed the granular raw material into the hopper 1 through the feed pipe 102, start the first motor 103, and its output end drives the rotating shaft 104 to rotate. The stirring rod 105 stirs the raw material in the hopper 1 under the drive of the rotating shaft 104 to avoid clogging the pre-extrusion channel 101 and difficulty in feeding. The spiral blade 106 pre-compresses the raw material entering the pre-extrusion channel 101 under the drive of the rotating shaft 104. After the raw material reaches the heated extrusion barrel 2, start the second motor 203, and the second motor 203 drives the spiral conveying rod 204 to transmit the heated granules. The raw material is extruded into the extrusion cavity 205, and by opening the regulating valve, the raw material falls into the forming mold 303 inside the dustproof shell 3 through the discharge pipe 206 to wait for shaping. By starting the semiconductor refrigerator 4, the cooled air is guided by the guide fins 402 and the induced draft fan 403 through the mesh cover 406 in the air guide cover 405 to the forming mold 303. The drying layer 404 is used to remove moisture from the humid air to obtain dry air, so that the PET sheet molding effect is better. Finally, the cover 301 is turned over by the handle to take the forming mold 303 out of the inlet and outlet slot 302.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PET sheet production extruder, comprising a hopper (1), characterized in that: A heated extrusion barrel (2) is arranged below the hopper (1), a support seat (201) is arranged at the bottom of the heated extrusion barrel (2), a dustproof shell (3) is arranged on one side of the support seat (201), a semiconductor refrigerator (4) is arranged on the upper end of the dustproof shell (3), the hopper (1) is fixedly connected to the heated extrusion barrel (2) through a pre-extrusion channel (101), a first motor (103) is installed on the upper end of the hopper (1), a feed pipe (102) is arranged on one side of the first motor (103), a rotating shaft (104) is arranged on the output end of the first motor (103), a stirring rod (105) and a spiral blade (106) are arranged on the outer wall of the rotating shaft (104), the spiral blade (106) is located inside the pre-extrusion channel (101), and the stirring rod (105) is located inside the hopper (1).

2. A PET sheet production extruder according to claim 1, characterized in that: A second motor (203) is installed on one side of the heated extrusion barrel (2), a screw conveying rod (204) is provided on the output end of the second motor (203), and an extrusion chamber (205) is fixedly provided on the end of the heated extrusion barrel (2) away from the second motor (203).

3. A PET sheet production extruder according to claim 1, characterized in that: An inlet and outlet slot (302) is provided on one side of the dustproof housing (3), a sealing cover (301) is provided on one side of the inlet and outlet slot (302), and the sealing cover (301) is rotatably connected to the dustproof housing (3) via a hinge.

4. A PET sheet production extruder according to claim 2, characterized in that: A forming die (303) is arranged inside the dustproof housing (3), a discharge pipe (206) is arranged at the bottom of the extrusion cavity (205), and one end of the discharge pipe (206) extends to the inside of the dustproof housing (3).

5. A PET sheet production extruder according to claim 1, characterized in that: An air outlet pipe (401) is connected to the bottom of the semiconductor refrigerator (4), an air guide cover (405) is connected to the lower end of the air outlet pipe (401), and a mesh cover (406) is arranged inside the air guide cover (405).

6. A PET sheet production extruder according to claim 5, characterized in that: An induced draft fan (403) is installed inside the air outlet pipe (401), a guide fin (402) is arranged above the induced draft fan (403), and a drying layer (404) is arranged below the induced draft fan (403).

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