A heating component for a pet preform blow molding apparatus

Abstract

The utility model discloses a heating component for PET bottle embryo blow molding device, including bottle embryo heating frame body, the inside of bottle embryo heating frame body is equipped with bottle embryo turnover frame, one end of bottle embryo turnover frame is equipped with turnover shaft, the surface one end of bottle embryo turnover frame is equipped with bottle mouth positioning seat, the inside of bottle mouth positioning seat is equipped with U type bayonet, one side of turnover shaft is equipped with limit frame, the below of the other side of turnover shaft is equipped with lower limit strip, the surface both sides of bottle embryo turnover frame are equipped with upper limit block. The utility model in this way, the movable infrared heating tube is equipped with the lifting adjustment mechanism, this structure can make movable infrared heating tube directly into the inside of bottle embryo, make the inside of bottle embryo heat more evenly, avoid the problem that the heat distribution is uneven possibly caused by external heating, also, reduce the distance and time of heat transfer, improve heating efficiency, shorten heating time to improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of PET preform processing equipment, specifically a heating component for a PET preform blow molding device. Background Technology

[0002] PET preforms are produced by filling a mold with raw material under specific temperature and pressure conditions, and then processing it in an injection molding machine to form a preform with a certain thickness and height corresponding to the mold. PET is a high molecular weight polymer, and its most important characteristic is its molecular weight. Molecular weight refers to the uniform number of molecules in a PET molecular chain. The longer the number of molecular chains, the better the physical properties of PET. PET preforms are a typical injection-molded product. Under specific temperature and pressure conditions, raw material is filled into a mold using an injection molding machine to form a preform with a specific thickness and height. This preform is usually made of plastic, has a uniform texture, and possesses good insulation properties.

[0003] The heating components of existing PET preform blow molding devices still have certain drawbacks in use. In traditional heating methods, the contact distance between the heating element and different sections of the preform is not uniform, resulting in uneven heating of different sections. The material is prone to stretching in areas with high temperatures, which can easily lead to thin walls and affect the quality of bottle processing. Summary of the Invention

[0004] The purpose of this invention is to provide a heating component for a PET preform blow molding device, in order to solve the problem mentioned in the background art that the traditional heating method for heating the preform results in uneven contact distance between the heating component and different sections of the preform, leading to uneven heating of different sections, and the material is prone to stretching in areas with high temperature, which can easily cause thin walls and affect the quality of bottle processing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heating component for a PET preform blow molding device, comprising a preform heating frame, a preform flipping frame inside the preform heating frame, a flipping shaft at one end of the preform flipping frame, a bottle nozzle positioning seat at one end of the surface of the preform flipping frame, a U-shaped bayonet inside the bottle nozzle positioning seat, a limiting frame on one side of the flipping shaft, a lower limiting strip below the other side of the flipping shaft, upper limiting blocks on both sides of the surface of the preform flipping frame, and a retaining device at the upper rear end of the preform heating frame. The heat-insulating protective cover has infrared heating elements on both sides inside. Below the infrared heating elements is a new type of heat-insulating plate. The bottom of the heat-insulating protective cover has a support frame. Heating grooves are located on both sides inside the support frame. A movable infrared heating tube is located above the inside of the heating groove. The bottom end of the movable infrared heating tube is connected to a first cylinder. Fixed frames are located at the front ends of both sides of the preform heating frame. A nozzle is located at the top inside the fixed frame and is connected to a second cylinder. Molds are located on both sides of the lower end of the fixed frame.

[0006] In a further embodiment, the preform flipping frame and the flipping shaft are fixedly connected by a triangular reinforcing plate, and the bottle mouth positioning seat is fixedly connected to the preform flipping frame by screws.

[0007] In a further embodiment, the preform flipping frame is provided with a fixing port at the connection position with the bottle mouth positioning seat, and the movable infrared heating tube is slidably connected to the preform flipping frame.

[0008] In a further embodiment, the flipping shaft is directly connected to the drive motor, and the preform flipping frame is welded to the flipping shaft.

[0009] In a further embodiment, the bottom surface of the limiting frame is welded to the support frame, and the top surface of the limiting frame is inlaid to the preform flipping frame.

[0010] In a further embodiment, the upper limit block and the lower limit strip are connected by inlay, and the upper limit block is connected to the preform flipping frame by welding, and the cross-section of the upper limit block is set to a circular structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the movable infrared heating tube is set as a height-adjustable mechanism. This structure allows the movable infrared heating tube to be directly inserted into the interior of the preform, making the interior of the preform more evenly heated and avoiding the problem of uneven heat distribution that may be caused by external heating. At the same time, it also reduces the distance and time of heat transfer, improves heating efficiency, and shortens heating time, thereby improving production efficiency. In addition, the bottle nozzle positioning seat is set inside the preform flipping frame. This structure can transport the heated preforms to the blow molding area, avoiding contact between workers and the heated preforms, preventing workers from being burned, improving production safety, and reducing the time spent on back-and-forth picking and placing operations, making it more time-saving and labor-saving. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a heating component for a PET preform blow molding device according to the present invention; Figure 2 This is a schematic diagram of the upward flipping structure of the preform flipping frame of this utility model; Figure 3 This is a front view of a heating component for a PET preform blow molding apparatus according to the present invention; Figure 4 This is a front view of the thermal insulation protective cover of this utility model; Figure 5 This is a top view of the bottle nozzle positioning seat of this utility model; Figure 6 This is a side view of a heating component for a PET preform blow molding apparatus according to the present invention.

[0013] In the diagram: 1. Support frame; 2. Heating tank; 3. First cylinder; 4. Movable infrared heating tube; 5. Insulation protective cover; 6. Infrared heating element; 7. Preform flipping frame; 8. Upper limit block; 9. Flipping shaft; 10. Mold; 11. Fixed frame; 12. Nozzle; 13. Second cylinder; 14. Limit frame; 15. Nozzle positioning seat; 16. Drive motor; 17. Preform heating frame; 18. Triangular reinforcing plate; 19. New type of insulation board; 20. Lower limit strip; 21. U-shaped bayonet. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figure 1-6This utility model provides an embodiment of a heating component for a PET preform blow molding device, comprising a preform heating frame 17, a preform flipping frame 7 inside the preform heating frame 17, a flipping shaft 9 at one end of the preform flipping frame 7, a bottle nozzle positioning seat 15 at one end of the surface of the preform flipping frame 7, a U-shaped bayonet 21 inside the bottle nozzle positioning seat 15, a limiting frame 14 on one side of the flipping shaft 9, a lower limiting strip 20 below the other side of the flipping shaft 9, upper limiting blocks 8 on both sides of the surface of the preform flipping frame 7, a heat preservation protective cover 5 at the upper rear end of the preform heating frame 17, infrared heating elements 6 on both sides inside the heat preservation protective cover 5, a novel heat preservation plate 19 below the infrared heating elements 6, a support frame 1 at the bottom end of the heat preservation protective cover 5, heating grooves 2 on both sides inside the support frame 1, a movable infrared heating tube 4 above the interior of the heating groove 2, the bottom end of the movable infrared heating tube 4 connected to a first cylinder 3, and the front ends of both sides of the preform heating frame 17 being provided with... A fixed frame 11 is provided, with a nozzle 12 at the top of the interior of the fixed frame 11. The nozzle 12 is connected to the second cylinder 13. Molds 10 are provided on both sides of the lower end of the interior of the fixed frame 11. The preform flipping frame 7 is used to change the orientation of the preform processing. The flipping shaft 9 is used to rotate and adjust the preform flipping frame 7. The nozzle positioning seat 15 is used to fix the nozzle of the preform. The limiting frame 14 is used to limit and position the upward flipping position of the preform flipping frame 7. The upper limit block 8 is used to limit and position the downward flipping position of the preform flipping frame 7. The lower limit strip 20 is used to position the upper limit block 8. The heat preservation cover 5 is used to increase the heat preservation effect. The support frame 1 is used to increase the support of the heat preservation cover 5. The heating tank 2 is used to install the movable infrared heating tube 4. The movable infrared heating tube 4 is used to heat the interior of the preform. The fixed frame 11 is used to assemble and fix the nozzle 12 and the mold 10. The mold 10 is used to process and shape the preform.

[0016] The preform flipping frame 7 and the flipping shaft 9 are fixedly connected by a triangular reinforcing plate 18, and the bottle mouth positioning seat 15 is fixedly connected to the preform flipping frame 7 by screws. The triangular reinforcing plate 18 is used to increase the firmness of the preform flipping frame 7.

[0017] The preform flipping frame 7 is provided with a fixing port at the connection position with the bottle mouth positioning seat 15, and the movable infrared heating tube 4 is slidably connected to the preform flipping frame 7. The fixing port allows the movable infrared heating tube 4 to operate in coordination.

[0018] The flipping shaft 9 is directly connected to the drive motor 16, and the preform flipping frame 7 is welded to the flipping shaft 9. The welding connection is used to increase the firmness of the installation of the preform flipping frame 7 and the flipping shaft 9.

[0019] The bottom surface of the limiting frame 14 is connected to the support frame 1 by welding, and the top surface of the limiting frame 14 is connected to the preform flipping frame 7 by inlay. The welding connection is used to increase the firmness of the connection between the bottom surface of the limiting frame 14 and the support frame 1.

[0020] The upper limit block 8 and the lower limit strip 20 are connected by inlay, and the upper limit block 8 and the preform flipping frame 7 are connected by welding. The cross-section of the upper limit block 8 is set as a circular structure. The inlay connection facilitates the separation operation of the upper limit block 8 and the lower limit strip 20. The welding connection is used to increase the firmness of the installation of the upper limit block 8 and the preform flipping frame 7.

[0021] Working principle: In use, the bottle preform is inserted into the bottle mouth positioning seat 15 through the U-shaped bayonet 21 and fixed. The drive motor 16 converts electrical energy into mechanical energy to drive the rotating shaft 9 to rotate clockwise, causing the bottle preform rotating frame 7 to rotate upward and place the bottle preform inside the heat preservation protective cover 5 with the bottle mouth facing downward. The first cylinder 3 drives the movable infrared heating tube 4 to rise upward and insert it into the interior of the bottle preform. The movable infrared heating tube 4 and the infrared heating element 6 efficiently heat the inside and outside of the bottle preform. After heating, the bottle preform rotating frame 7 is rotated downward so that the bottle mouth faces upward. The second cylinder 13 drives the blowing nozzle 12 to move downward so that the blowing nozzle 12 is embedded with the bottle mouth for blowing. At the same time, the heated bottle preform is extruded and shaped by the mold 10. The processed bottle can then be taken out.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heating component for a PET preform blow molding apparatus, comprising a preform heating frame (17), characterized in that: The preform heating frame (17) is equipped with a preform flipping frame (7) inside. One end of the preform flipping frame (7) is equipped with a flipping shaft (9). One end of the surface of the preform flipping frame (7) is equipped with a bottle mouth positioning seat (15). The bottle mouth positioning seat (15) is equipped with a U-shaped bayonet (21) inside. One side of the flipping shaft (9) is equipped with a limiting frame (14). The lower side of the flipping shaft (9) is equipped with a lower limiting strip (20). The two sides of the surface of the preform flipping frame (7) are equipped with upper limiting blocks (8). The upper rear end of the preform heating frame (17) is equipped with a heat preservation protective cover (5). The two sides inside the heat preservation protective cover (5) are equipped with infrared heating elements (6). The infrared heating element (6) is provided with a new type of heat preservation plate (19) below it. The bottom end of the heat preservation protective cover (5) is provided with a support frame (1). The two sides inside the support frame (1) are provided with heating grooves (2). The upper part inside the heating groove (2) is provided with a movable infrared heating tube (4). The bottom end of the movable infrared heating tube (4) is connected to the first cylinder (3). The front end of both sides of the preform heating frame (17) is provided with a fixed frame (11). The top of the inside of the fixed frame (11) is provided with a nozzle (12). The nozzle (12) is connected to the second cylinder (13). The two sides of the lower end of the inside of the fixed frame (11) are provided with molds (10).

2. The heating component for a PET preform blow molding apparatus according to claim 1, characterized in that: The preform flipping frame (7) and the flipping shaft (9) are fixedly connected by a triangular reinforcing plate (18), and the bottle mouth positioning seat (15) is fixedly connected to the preform flipping frame (7) by screws.

3. A heating component for a PET preform blow molding apparatus according to claim 1, characterized in that: The preform flipping frame (7) is provided with a fixed opening at the position where it is connected to the bottle mouth positioning seat (15), and the movable infrared heating tube (4) is slidably connected to the preform flipping frame (7).

4. A heating component for a PET preform blow molding apparatus according to claim 1, characterized in that: The flipping shaft (9) is directly connected to the drive motor (16), and the preform flipping frame (7) is welded to the flipping shaft (9).

5. A heating component for a PET preform blow molding apparatus according to claim 1, characterized in that: The bottom surface of the limiting frame (14) is connected to the support frame (1) by welding, and the top surface of the limiting frame (14) is connected to the preform flipping frame (7) by inlay.

6. A heating component for a PET preform blow molding apparatus according to claim 1, characterized in that: The upper limit block (8) and the lower limit strip (20) are connected by inlay, and the upper limit block (8) and the preform flipping frame (7) are connected by welding, and the cross-section of the upper limit block (8) is set as a circular structure.

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