PET bottle preform preheating system

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) bottle preform preheating, in particular to a PET bottle preform preheating system, which comprises a working table, a preheater positioned above the working table, a moving component and a cooling mechanism, wherein the moving component is arranged at the top of the working table in a sliding manner and is used for fixing a bottle preform and driving the bottle preform to transmit; the cooling mechanism is arranged at the top of the workbench, located on the side face of the moving assembly and used for dissipating heat of the bottleneck position of the bottle preform. Through the arrangement of the cooling mechanism, the cooling mechanism can quickly cool the bottle neck of a bottle preform through cooling liquid, and the cooling liquid absorbing overheat flows into the heat dissipation box through the rotation of the spiral blade to dissipate heat; and after heat dissipation is completed, the bottle blank enters the cooling pipe again through the other end of the heat dissipation box to cool the bottle neck of the bottle blank, so that the cooling effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of PET preforms preheating, in particular to a PET preform preheating system. Background Art

[0002] When processing PET preforms, they are mainly processed by a blow molding machine. The blow molding process of the blow molding machine is divided into two parts: preheating and blow molding. During preheating, the preform is irradiated by infrared high-temperature lamp tubes to heat and soften the blank part of the preform. In order to maintain the shape of the bottle mouth, the bottle mouth of the preform does not need to be heated.

[0003] Chinese patent with publication number CN214521869U discloses a PET preform preheating system, including a base and infrared high-temperature lamp tubes. The upper surface of the base is fixedly connected with a placement table. The right side of the placement table is provided with a mounting plate. The left side of the mounting plate is fixedly connected with the infrared high-temperature lamp tubes. The lower surface of the mounting plate is fixedly connected with a support block. The upper surface of the base is fixedly connected with two side plates. The opposite surfaces of the two side plates are fixedly connected with a sliding rod. The outer side of the sliding rod is movably sleeved inside the bottom end of the support block. In this PET preform preheating system, by providing a connecting plate, an adjusting bolt and an adjusting plate, the angle of the adjusting plate can be adjusted by rotating the adjusting bolt, so as to adjust the irradiation angle of the infrared high-temperature lamp tubes, solving the problem that the existing device cannot concentrate the irradiation light when irradiating and preheating a specified part of the PET preform.

[0004] However, the above-mentioned disclosed solution has the following deficiencies: The existing PET preforms cannot protect the bottleneck during preheating, so the bottleneck will also be heated and softened under the influence of heat transfer. The bottleneck does not need to be changed during the processing of the preform, which will affect the subsequent blow molding of the preform. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a PET preform preheating system for the problem that the bottleneck of the preform cannot be cooled in the background art.

[0006] The technical solution of the utility model: A PET preform preheating system includes a workbench and a preheater located above the workbench; it also includes:

[0007] A moving component, slidably arranged on the top of the workbench, used to fix the preform and drive the preform to move;

[0008] And a cooling mechanism, arranged on the top of the workbench and on the side of the moving component, used to dissipate heat from the bottleneck position of the preform.

[0009] Preferably, the moving component includes a conveyor belt and a placement block;

[0010] The conveyor belt is slidably arranged on the outside of the workbench, and the placing block is arranged on the top of the conveyor belt.

[0011] Preferably, the cooling mechanism includes a fixing plate, a connecting block, a heat absorption component, a heat dissipation component and a transmission component;

[0012] The connecting block is arranged on the top of the workbench, and the fixing plate is arranged on the top of the connecting block;

[0013] The heat absorption component is arranged on the top of the fixing plate and on the side, and is used to absorb the heat at the bottleneck of the preform during preheating;

[0014] The heat dissipation component is arranged on the top of the workbench and on the side far from the heat absorption component, and is used to dissipate the heat of the coolant after heat absorption and re-enter the heat absorption component for utilization;

[0015] The transmission component is arranged on the top of the heat dissipation component and is used to drive the heat absorption component and the heat dissipation component to operate.

[0016] Preferably, the heat absorption component includes a cooling pipe, a heat conducting sheet, a connecting shaft and a spiral blade;

[0017] The cooling pipe is arranged on the top of the fixing plate, the heat conducting sheet is arranged on the side of the cooling pipe, the spiral blade is rotatably arranged inside the cooling pipe, and the connecting shaft is arranged inside the spiral blade.

[0018] Preferably, the transmission component includes a connecting piece, a motor, a first rotating shaft, a third rotating shaft and a driving wheel;

[0019] The connecting piece is arranged on the side of the workbench, the motor is arranged at the end of the connecting piece far from the workbench, the first rotating shaft is arranged at the output end of the motor, the driving wheel is arranged at the end of the first rotating shaft far from the motor, a first belt is arranged on the outside of the driving wheel, a first rotating wheel is arranged on the side of the belt far from the driving wheel, a second rotating shaft is arranged at the center of the first rotating wheel, a second rotating wheel is arranged at the end of the second rotating shaft far from the first rotating wheel, a second belt is arranged on the outside of the second rotating wheel, and a third rotating wheel is arranged on the side of the second belt far from the first rotating wheel;

[0020] The third rotating shaft is arranged at the end of the motor far from the first rotating shaft, and a first bevel gear is arranged on the outside of the third rotating shaft.

[0021] Preferably, the heat dissipation component includes a heat dissipation box, a fourth rotating shaft, a stirring blade and a second bevel gear;

[0022] The heat dissipation box is arranged on the top of the fixing plate, the fourth rotating shaft is rotatably arranged inside the heat dissipation box, the stirring blade is arranged on the outside of the fourth rotating shaft, and the second bevel gear is arranged on the top of the fourth rotating shaft.

[0023] Compared with the prior art, the utility model has the following beneficial technical effects: Through the setting of the cooling mechanism, the cooling mechanism can quickly cool the bottleneck of the preform through the coolant, and make the coolant after absorbing heat flow into the heat dissipation box through the rotation of the spiral blade for heat dissipation. After the heat dissipation is completed, it re-enters the cooling pipe from the other end of the heat dissipation box to cool the bottleneck of the preform. Such a cooling effect is better. Since the bottleneck is a key part of the PET preform, its shape and size have an important impact on the subsequent blow molding and the use performance of the final product. Through the cooling protection, it can ensure that the bottleneck part maintains a stable shape during the preheating process and avoid deformation or dimensional changes due to overheating. And during the blow molding process, the PET preform needs to be evenly stretched to form the final bottle shape. If the temperature of the bottleneck part is too high during preheating, it may cause uneven stretching in this area during blow molding, thus affecting the overall quality and appearance of the bottle. Through the cooling protection, it can ensure that the bottleneck part can be stretched synchronously and evenly with other parts during blow molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0025] Figure 2 is Figure 1 a schematic internal structure diagram;

[0026] Figure 3 is a schematic structural diagram of the cooling mechanism;

[0027] Figure 4 is a schematic internal structure diagram of the cooling mechanism.

[0028] Reference numerals: 1, workbench; 2, preheater; 301, fixing plate; 302, connecting block; 303, heat conducting sheet; 304, cooling pipe; 305, heat dissipation box; 306, spiral blade; 307, connecting shaft; 308, third runner; 309, second belt; 310, second runner; 311, second rotating shaft; 312, first runner; 313, first belt; 314, driving wheel; 315, first rotating shaft; 316, motor; 317, connecting member; 318, third rotating shaft; 319, first bevel gear; 320, second bevel gear; 321, fourth rotating shaft; 322, stirring blade; 401, conveyor belt; 402, placing block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Embodiment 1

[0030] As Figures 1-2 shown, a PET preform preheating system proposed by the utility model includes a workbench 1, a preheater 2 located above the workbench 1, a moving component, and a cooling mechanism:

[0031] The moving component is slidably arranged on the top of the workbench 1 and is used to fix the preform and drive the preform to move;

[0032] The cooling mechanism is arranged on the top of the workbench 1 and on the side of the moving component, and is used to dissipate heat from the bottleneck position of the preform.

[0033] The moving component includes a conveyor belt 401 and placing blocks 402; the conveyor belt 401 is slidably arranged on the outside of the workbench 1, the placing blocks 402 are arranged on the top of the conveyor belt 401, there are multiple placing blocks 402, and the distance between each placing block 402 is the same. The placing blocks 402 are made of rubber and are slightly larger than the bottle mouth in size, so that the preform can be inverted on the placing blocks 402 by the machine for subsequent processing.

[0034] Embodiment 2

[0035] As Figures 3-4 shown, a PET preform preheating system proposed by the present utility model, compared with Embodiment 1, this embodiment details the structure of the cooling mechanism:

[0036] The cooling mechanism includes a fixing plate 301, a connecting block 302, a heat absorption component, a heat dissipation component, and a transmission component; the connecting block 302 is arranged on the top of the workbench 1, and the fixing plate 301 is arranged on the top of the connecting block 302; the heat absorption component is arranged on the top of the fixing plate 301 and on the side, and is used to absorb the heat at the bottleneck of the preform during preheating; the heat dissipation component is arranged on the top of the workbench 1 and on the side away from the heat absorption component, and is used to dissipate the heat of the coolant after absorbing heat and re-enter the heat absorption component for utilization; the conveying component is arranged on the top of the heat dissipation component and is used to drive the heat absorption component and the heat dissipation component to operate. The heat absorption component includes a cooling pipe 304, a heat conducting sheet 303, a connecting shaft 307, and a spiral blade 306; the cooling pipe 304 is arranged on the top of the fixing plate 301, the heat conducting sheet 303 is arranged on the side of the cooling pipe 304, the spiral blade 306 is rotatably arranged inside the cooling pipe 304, the connecting shaft 307 is arranged inside the spiral blade 306, and the spiral blade 306 can rotate driven by the conveying component, so that the coolant inside the cooling pipe 304 flows, so that it can continuously exchange with the coolant in the heat dissipation component, making the heat dissipation effect better. The transmission component includes a connecting piece 317, a motor 316, a first rotating shaft 315, a third rotating shaft 318, and a driving wheel 314; the connecting piece 317 is arranged on the side of the workbench 1, the motor 316 is arranged at one end of the connecting piece 317 away from the workbench 1, the first rotating shaft 315 is arranged at the output end of the motor 316, the driving wheel 314 is arranged at one end of the first rotating shaft 315 away from the motor 316, a first belt 313 is arranged on the outside of the driving wheel 314, a first rotating wheel 312 is arranged on the side of the belt away from the driving wheel 314, a second rotating shaft 311 is arranged at the center of the first rotating wheel 312, a second rotating wheel 310 is arranged at one end of the second rotating shaft 311 away from the first rotating wheel 312, a second belt 309 is arranged on the outside of the second rotating wheel 310, a third rotating wheel 308 is arranged on the side of the second belt 309 away from the first rotating wheel 312, and the side of the third rotating wheel 308 is connected to the connecting shaft 307. Therefore, after the motor 316 is started, it can drive the driving wheel 314 to rotate through the first rotating shaft 315, the driving wheel 314 drives the first rotating wheel 312 to rotate through the first belt 313, the first rotating wheel 312 drives the second rotating wheel 310 to rotate through the second rotating shaft 311, the second rotating wheel 310 drives the third rotating wheel 308 to rotate through the second belt 309, and the third rotating wheel 308 can drive the connecting shaft 307 to rotate, thereby driving the spiral blade 306 to rotate inside the cooling pipe 304; the third rotating shaft 318 is arranged at one end of the motor 316 away from the first rotating shaft 315, a first bevel gear 319 is arranged on the outside of the third rotating shaft 318, the third rotating shaft 318 drives the two first bevel gears 319 to rotate, and the first bevel gear 319 can drive the heat dissipation component to work.The heat dissipation component includes a heat dissipation box 305, a fourth rotating shaft 321, stirring blades 322 and a second bevel gear 320; the heat dissipation box 305 is arranged on the top of the fixed plate 301. The heat dissipation box 305 is an open box body, which can quickly dissipate the heat of the coolant flowing into the heat dissipation box 305. The fourth rotating shaft 321 is rotatably arranged inside the heat dissipation box 305. The stirring blades 322 are arranged outside the fourth rotating shaft 321. The second bevel gear 320 is arranged on the top of the fourth rotating shaft 321. The second bevel gear 320 and the first bevel gear 319 can mesh. Therefore, when the motor 316 drives the two first bevel gears 319 to rotate, the second bevel gear 320 will be driven to rotate. The second bevel gear 320 drives the stirring blades 322 to rotate through the fourth rotating shaft 321. The rotation of the stirring blades 322 can stir the coolant inside the heat dissipation box 305, so as to evenly dissipate the heat of the internal coolant, and thus the heat dissipation effect is better.

[0037] In summary, when the present utility model is in use, the machine reversely buckles the preform on the placing block 402 and fixes its position through the placing block 402. Then the conveyor 401 drives the preform to move forward. When it moves to the position of the preheater 2, the preheating process starts. At the same time, the motor 316 drives the first rotating shaft 315 and the third rotating shaft 318 to rotate. The rotation of the first rotating shaft 315 drives the driving wheel 314 to rotate. The driving wheel 314 drives the first runner 312 to rotate through the first belt 313. The first runner 312 drives the second runner 310 to rotate through the second rotating shaft 311. The second runner 310 drives the third runner 308 to rotate through the second belt 309. The third runner 308 can drive the connecting shaft 307 to rotate, so as to drive the spiral blade 306 to rotate in the cooling pipe 304, making the coolant inside the cooling pipe 304 flow, so that it can continuously exchange with the coolant in the heat dissipation box 305, making the heat dissipation effect better. At the same time, the third rotating shaft 318 drives the two first bevel gears 319 to rotate. When the first bevel gears 319 rotate, the second bevel gear 320 will be driven to rotate. The second bevel gear 320 drives the stirring blades 322 to rotate through the fourth rotating shaft 321. The rotation of the stirring blades 322 can stir the coolant inside the heat dissipation box 305, so as to evenly dissipate the heat of the internal coolant, and thus the heat dissipation effect is better.

[0038] The embodiments of the present utility model have been described in detail above with reference to the drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the spirit of the present utility model within the knowledge scope of those skilled in the art to which it belongs.

Claims

1. A PET preform preheating system, comprising a workbench (1) and a preheater (2) located above the workbench (1); characterized in that: Also includes: A moving component is slidably arranged on the top of the workbench (1) and is used to fix the bottle preform and drive the bottle preform to move; And a cooling mechanism is arranged on the top of the workbench (1) and located on the side of the moving component, and is used to dissipate heat at the bottleneck position of the bottle preform.

2. The PET preform preheating system according to claim 1, characterized in that: The moving assembly includes a conveyor belt (401) and a placement block (402); The conveyor belt (401) is slidably arranged on the outer side of the workbench (1), and the placement block (402) is arranged on the top of the conveyor belt (401).

3. The PET preform preheating system according to claim 1, characterized in that: The cooling mechanism comprises a fixing plate (301), a connecting block (302), a heat absorbing component, a heat dissipating component and a transmission component; The connecting block (302) is arranged on the top of the workbench (1), and the fixing plate (301) is arranged on the top of the connecting block (302); The heat absorption component is arranged on the top and side of the fixing plate (301) and is used to absorb the heat at the bottleneck of the bottle preform during preheating; The heat dissipation component is arranged on the top of the workbench (1) and is located on a side away from the heat absorption component, and is used to dissipate the heat of the cooling liquid that has absorbed the heat and re-enter the heat absorption component for use; The transmission component is arranged on the top of the heat dissipation component and is used to drive the heat absorption component and the heat dissipation component to operate.

4. The PET preform preheating system according to claim 3, characterized in that: The heat absorption component includes a cooling tube (304), a heat conducting sheet (303), a connecting shaft (307) and a spiral blade (306); The cooling pipe (304) is arranged on the top of the fixing plate (301), the heat conducting sheet (303) is arranged on the side of the cooling pipe (304), the spiral blade (306) is rotatably arranged on the inner side of the cooling pipe (304), and the connecting shaft (307) is arranged on the inner side of the spiral blade (306).

5. The PET preform preheating system according to claim 4, characterized in that: The transmission assembly includes a connecting member (317), a motor (316), a first rotating shaft (315), a third rotating shaft (318) and a driving wheel (314); A connecting member (317) is arranged on a side of the workbench (1), a motor (316) is arranged at an end of the connecting member (317) away from the workbench (1), a rotating shaft (315) is arranged at an output end of the motor (316), a driving wheel (314) is arranged at an end of the rotating shaft (315) away from the motor (316), a belt (313) is arranged on the outer side of the driving wheel (314), a rotating wheel (312) is arranged on the side of the belt away from the driving wheel (314), a rotating shaft (311) is arranged at the axis of the rotating wheel (312), a rotating wheel (310) is arranged on the end of the rotating shaft (311) away from the rotating wheel (312), a belt (309) is arranged on the outer side of the rotating wheel (310), and a rotating wheel (308) is arranged on the side of the belt (309) away from the rotating wheel (312); The rotating shaft three (318) is arranged at an end of the motor (316) away from the rotating shaft one (315), and a bevel gear one (319) is arranged on the outer side of the rotating shaft three (318).

6. The PET preform preheating system according to claim 1, characterized in that: The heat dissipation assembly includes a heat dissipation box (305), a fourth rotating shaft (321), a stirring blade (322) and a second bevel gear (320); The heat dissipation box (305) is arranged on the top of the fixed plate (301), the rotating shaft (321) is rotatably arranged on the inner side of the heat dissipation box (305), the stirring blade (322) is arranged on the outer side of the rotating shaft (321), and the bevel gear (320) is arranged on the top of the rotating shaft (321).

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