Bottle blank temperature adjusting device

Abstract

The utility model discloses a bottle blank temperature adjusting device which comprises a cooling module and a plurality of heating modules, the heating modules and the cooling modules are arranged in a stacked mode. Bottle blanks to be subjected to temperature adjustment are placed in the heating modules and the cooling modules; the heating modules and the cooling modules are respectively used for adjusting the temperature of different positions of the bottle blank. Accurate adjustment of temperatures of different height areas of a bottle blank is achieved, the heating module ensures uniform temperature rise, the cooling module cools quickly, heat interference is prevented in combination with the heat insulation ring, and the forming quality of a complex bottle type is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of bottle preform temperature control technology, and in particular to a bottle preform temperature control device. Background Technology

[0002] In existing technology, the one-step injection stretch blow molding process for producing plastic bottles has four stations: injection molding, temperature control, stretch blow molding, and demolding. First, a preform at a suitable temperature is injection molded at the injection molding station, cooled, and demolded. Then, at the second station, the temperature control station, a heating coil surrounds the cooling tank to heat and adjust the preform's temperature. The purpose of temperature control is to ensure the preform's temperature distribution is suitable for subsequent blow molding, thus preventing defects in the finished bottle. However, for special bottle shapes, such as those with complex shapes, uneven thickness, or special structures, simple heating can lead to overheating in certain areas, resulting in uneven temperature distribution and affecting molding quality. Summary of the Invention

[0003] According to an embodiment of the present invention, a preform temperature control device is provided, comprising: a cooling module and several heating modules;

[0004] Several heating and cooling modules are stacked together;

[0005] The preform to be heated is placed inside several heating and cooling modules;

[0006] Several heating and cooling modules are used for temperature control at different positions of the preform.

[0007] Furthermore, a first heat insulation ring is provided between adjacent heating modules, and a second heat insulation ring is provided between adjacent heating modules and cooling modules.

[0008] Furthermore, the heating module includes: a heating tank and an electric heating coil;

[0009] An electric heating coil is installed on the heating tank, and the preform to be heated is placed inside the heating tank;

[0010] An electric heating coil heats the heating tank, thereby heating the bottle preform.

[0011] Furthermore, an electric heating coil surrounds the outer surface of the heating tank.

[0012] Furthermore, the cooling module includes: a cooling tank, a mounting plate, an inlet connector, and an outlet connector;

[0013] The preform to be conditioned is placed inside the cooling tank, and cooling grooves are formed on the outer surface of the cooling tank;

[0014] The mounting plate is fixed to the cooling tank and surrounds the cooling tank;

[0015] The inlet and outlet connectors are mounted opposite each other on the fixed plate and are connected to the cooling tank.

[0016] External cooling medium enters the cooling tank through the inlet connector to cool the cooling tank, and then exits through the outlet connector.

[0017] Furthermore, the cooling medium is water.

[0018] Furthermore, the cooling tank is annular.

[0019] Furthermore, a pair of sealing rings are provided between the fixing plate and the cooling tank, with the pair of sealing rings respectively located on the upper and lower sides of the cooling tank.

[0020] According to the bottle preform temperature control device of this utility model embodiment, the temperature of different height areas of the bottle preform can be accurately adjusted. The heating module ensures uniform heating, the cooling module cools down quickly, and the heat insulation ring prevents thermal interference, which significantly improves the molding quality of complex bottle shapes.

[0021] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of the preform temperature control device according to an embodiment of the present utility model;

[0023] Figure 2 This is a side view of the preform temperature control device according to an embodiment of the present invention. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0025] First, combine Figures 1-2 The bottle preform temperature control device according to an embodiment of the present invention is used for temperature control of bottle preforms and has a wide range of applications.

[0026] like Figures 1-2 As shown, the bottle preform temperature control device of this utility model embodiment includes: a cooling module and several heating modules.

[0027] Specifically, such as Figures 1-2As shown, in this embodiment, several heating modules and cooling modules are stacked. The cooling modules can be placed between the heating modules or on the upper and lower sides of the heating modules according to usage requirements. The heating and cooling modules form a segmented and layered temperature control, which can independently regulate the temperature of different height areas of the preform. Different parts of the preform along the axial direction (height direction) (such as the bottle mouth, bottle body, and bottle bottom) can be set with heating or cooling modes respectively. Different thermal management can be carried out for different areas of special bottle shapes to avoid local overheating or overcooling. The preform to be heated is placed in the heating and cooling modules. The heating and cooling modules are used to adjust the temperature of different positions of the preform.

[0028] Specifically, such as Figures 1-2 As shown, in this embodiment, a first heat insulation ring 11 is provided between adjacent heating modules, and a second heat insulation ring 12 is provided between adjacent heating modules and cooling modules. The first heat insulation ring 11 and the second heat insulation ring 12 can isolate the heat conduction between adjacent temperature control modules and prevent heat crosstalk.

[0029] Specifically, such as Figures 1-2 As shown, in this embodiment, the heating module includes a heating tank 21 and an electric heating coil 22. The electric heating coil 22 is disposed on the heating tank 21, and the preform to be heated is placed inside the heating tank 21. The electric heating coil 22 heats the heating tank 21, indirectly heating the preform inside. The tank body acts as a heat buffer layer, which can smooth out the local high temperature points of the electric heating coil 22, making the preform heated more evenly.

[0030] Furthermore, such as Figures 1-2 As shown, in this embodiment, the electric heating coil 22 surrounds the outer surface of the heating tank 21.

[0031] Specifically, such as Figures 1-2 As shown, in this embodiment, the cooling module includes: a cooling tank 31, a fixing plate 32, an inlet connector 33, and an outlet connector 34. The preform to be temperature-controlled is placed inside the cooling tank 31, and a cooling groove 35 is formed on the outer surface of the cooling tank 31. The fixing plate 32 is fixed to the cooling tank 31 and surrounds it. The inlet connector 33 and the outlet connector 34 are positioned opposite each other on the fixing plate 32 and communicate with each other through the cooling groove 35. External cooling medium enters the cooling groove 35 through the inlet connector 33 to cool the cooling tank 31, and then exits through the outlet connector 34. In this embodiment, the cooling medium is water, which is inexpensive and highly controllable. Different cooling intensities are achieved by adjusting the water temperature. The cooling groove 35 is annular, ensuring comprehensive cooling of the cooling tank 31 by the cooling water, improving the circumferential temperature uniformity of the preform, and indirectly cooling the preform.

[0032] Furthermore, such as Figures 1-2As shown, in this embodiment, a pair of sealing rings 36 are provided between the fixing plate 32 and the cooling tank 31. The pair of sealing rings 36 are respectively provided on the upper and lower sides of the cooling tank 35. The sealing rings 36 ensure the sealing between the fixing plate 32 and the cooling tank 31 and prevent cooling water from leaking between the fixing plate 32 and the cooling tank 31.

[0033] In use, the electric heating coil 22 and the cooling medium are adjusted to the set temperature, and then the cooling medium is introduced into the cooling tank 35 through the inlet interface. The preform to be heated is placed in the heating tank 21 and the cooling tank 31 to achieve temperature adjustment.

[0034] Above, refer to Figures 1-2 The present invention describes a preform temperature control device according to an embodiment of the present invention, which enables precise temperature adjustment of different height areas of the preform, with a heating module ensuring uniform heating, a cooling module rapidly cooling down, and a heat insulation ring preventing thermal interference, thereby significantly improving the molding quality of complex bottle shapes.

[0035] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0036] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A bottle preform conditioning apparatus characterized by, The device comprises a cooling module and a plurality of heating modules. The plurality of heating modules and the cooling module are arranged in layers. The bottle preform to be tempered is placed in the plurality of heating modules and the cooling module. The plurality of heating modules and the cooling module are respectively used for tempering different positions of the bottle preform. A first heat insulation ring is arranged between adjacent heating modules, and a second heat insulation ring is arranged between adjacent heating modules and the cooling module. The heating module comprises a heating tank and an electric heating ring. The electric heating ring is arranged on the heating tank, and the bottle preform to be tempered is placed in the heating tank. The electric heating ring heats the heating tank, thereby heating the bottle preform. The cooling module comprises a cooling tank, a fixing plate, an inlet joint and an outlet joint. The bottle preform to be tempered is placed in the cooling tank, and the outer surface of the cooling tank is provided with a cooling groove. The fixing plate is fixed on the cooling tank and surrounds the cooling tank. The inlet joint and the outlet joint are oppositely arranged on the fixing plate and are in communication with the cooling groove. An external cooling medium enters the cooling groove through the inlet joint to cool the cooling tank, and then is output through the outlet joint.

2. The bottle blank temperature adjusting apparatus according to claim 1, wherein The electric heating ring surrounds the outer surface of the heating tank.

3. The bottle blank tempering apparatus as claimed in claim 1, wherein The cooling medium is water.

4. The bottle blank tempering apparatus as claimed in claim 1, wherein The cooling groove is annular.

5. The bottle blank tempering apparatus as claimed in claim 4, wherein A pair of sealing rings is arranged between the fixing plate and the cooling tank, and the pair of sealing rings are respectively arranged on the upper and lower sides of the cooling groove.

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