A cooling device for blow molding plastic bottles

By designing an adjustable cooling device, the problem of uneven cooling of plastic bottles was solved, achieving uniform cooling and improving product quality and production efficiency.

CN224465237UActive Publication Date: 2026-07-07

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Filing Date
2025-06-20
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing plastic bottle blow molding cooling devices have a fixed cooling structure, which cannot be adjusted according to the specifications of the plastic bottles, resulting in uneven cooling and affecting the dimensional accuracy and quality of the products.

Method used

A cooling device comprising an adjusting cylinder, a transmission bracket, and a cooling seat is designed. The piston movement of the adjusting cylinder drives the transmission bracket and the cooling seat to rotate, thereby adjusting the position and angle of the cooling seat to accommodate plastic bottles of different sizes.

Benefits of technology

It achieves uniform cooling of plastic bottles of different specifications, improves the dimensional accuracy and appearance quality of the products, shortens the cooling time, reduces the defect rate, and improves production efficiency and economic benefits.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of cooling device for plastic bottle blow molding, it is related to blow molding cooling technical field, it solves the problem that due to cooling device needs to carry out cooling treatment to different specifications plastic bottle, but the cooling structure of commonly used cooling device is usually fixed design, cannot be adjusted according to the specification of plastic bottle, lead to the phenomenon of uneven cooling of plastic bottle problem.A kind of cooling device for plastic bottle blow molding, it includes: the inside of the device base is symmetrically rotated with six groups of adjusting cylinder;When facing the cooling operation of multiple different specifications plastic bottles, operator only needs to start adjusting cylinder, when the piston of adjusting cylinder moves, under the driving of transmission support, cooling seat starts to move slowly and rotates by certain angle, to ensure the dimensional accuracy, physical properties and appearance quality consistency of product, can also effectively shorten cooling time.
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Description

Technical Field

[0001] This utility model belongs to the field of blow molding cooling technology, and more specifically, it relates to a cooling device for blow molding plastic bottles. Background Technology

[0002] Cooling devices used in plastic bottle blow molding are one of the key pieces of equipment in the process. Their main function is to rapidly reduce the temperature of the bottle body after the plastic preform has been blow molded, so as to set its shape and thus ensure the dimensional accuracy, surface quality and physical properties of the plastic bottle.

[0003] During the use of cooling devices, since the cooling devices need to cool plastic bottles of different sizes, the cooling structure of commonly used cooling devices is usually a fixed design, which cannot be adjusted according to the size of the plastic bottles, resulting in uneven cooling of the plastic bottles. Utility Model Content

[0004] This disclosure relates to a cooling device for blow molding plastic bottles, which solves the problem mentioned in the background art that the cooling device needs to cool plastic bottles of different specifications, but the cooling structure of commonly used cooling devices is usually a fixed design and cannot be adjusted according to the specifications of the plastic bottles, resulting in uneven cooling of the plastic bottles.

[0005] This utility model discloses a cooling device for blow molding plastic bottles, which is achieved by the following specific technical means:

[0006] This utility model provides a cooling device for blow molding of plastic bottles, comprising: a device base, wherein six sets of adjusting cylinders are symmetrically rotated inside the device base; the device base further comprises: a device top plate, the device top plate being rectangular in shape and fixed to the top of the device base; and two connecting seats, the connecting seats being rectangular in shape and symmetrically fixed to the top of the device top plate.

[0007] As a preferred embodiment of this utility model, the device base further includes: a connector, which is fixedly installed in the middle of one side of the connector; one end of the connector is connected to an external air supply device; and a support column, which is rectangular in shape and has four supports, which are symmetrically fixed to the bottom of the device base.

[0008] As a preferred embodiment of this utility model, the device base further includes: a support base, which is rectangular in shape and fixed to the bottom of the support column; and four fixing heads, which are symmetrically and integrally arranged on both sides of the support base.

[0009] As a preferred embodiment of this utility model, the device base further includes a transmission belt, which rotates in the middle of the device base.

[0010] As a preferred embodiment of this utility model, the adjusting cylinder further includes: a transmission bracket, which rotates at one end of the piston rod of the adjusting cylinder; a cooling seat, which rotates at one end of the transmission bracket; and the cooling seats at one end of every three sets of adjusting cylinders are rotatably connected.

[0011] As a preferred embodiment of this utility model, the adjusting cylinder further includes: a cooling nozzle, which is fixed to one side of the cooling seat; a connecting seat, which is fixedly installed on the top of the cooling seat; the connecting seat and the connecting seat are connected by a connecting pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When cooling various sizes of plastic bottles, the operator simply activates the adjusting cylinder. As the piston moves, the transmission bracket shifts and changes angle accordingly. Driven by the transmission bracket, the cooling seat slowly moves and rotates at a certain angle. With this movement and rotation, the cooling seat's position and relative angle to the plastic bottle change significantly. Previously, cooling dead zones or uneven cooling areas due to different bottle sizes are effectively improved by adjusting the cooling seat's position and angle. For smaller, finer-diameter plastic bottles, the cooling seat can... By rotating and adjusting the angle, the cooling air or cooling medium can be blown more directly and evenly to all parts of the plastic bottle, avoiding the problem of cooling air concentrating in a certain area due to the small diameter of the plastic bottle. For larger plastic bottles with thicker diameters, the cooling base can be moved to expand the cooling range, ensuring that the entire surface of the plastic bottle is fully cooled. This ensures the consistency of the product's dimensional accuracy, physical properties, and appearance quality, and can also effectively shorten cooling time, improve production efficiency, and reduce the product defect rate caused by uneven cooling, bringing significant economic benefits and quality improvement to enterprises. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall axial three-dimensional structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the disassembled structure of the device base of this utility model.

[0016] Figure 3 This is a schematic diagram of the cooling seat structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the cooling nozzle structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the adjusting cylinder structure of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Device base; 101. Device top plate; 102. Connecting seat; 103. Connecting head; 104. Support column; 105. Support base; 106. Fixing head; 107. Transmission belt; 2. Adjusting cylinder; 201. Transmission bracket; 202. Cooling seat; 203. Cooling nozzle; 204. Connecting seat. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Example: As attached Figure 1 To be continued Figure 5 As shown:

[0023] This utility model provides a cooling device for blow molding of plastic bottles, comprising: a device base 1, with six sets of adjusting cylinders 2 symmetrically rotating inside the device base 1; the device base 1 further comprising: a device top plate 101, the device top plate 101 being rectangular in shape and fixed to the top of the device base 1; two connecting seats 102, the connecting seats 102 being rectangular in shape and symmetrically fixed to the top of the device top plate 101; and a connecting head 103, the connecting head 103 being fixedly installed in the middle of one side of the connecting seat 102; one end of the connecting head 103 is connected to... The external air conditioning supply equipment is connected in the same way; support column 104, the support column 104 is rectangular column structure, and the number of support columns 104 is set to four, and the support columns 104 are symmetrically fixed to the bottom of the device base 1; support base 105, the support base 105 is rectangular seat structure, and the support base 105 is fixed to the bottom of the support column 104; fixing head 106, the fixing head 106 is arc head structure, and the number of fixing heads 106 is set to four, and the fixing heads 106 are symmetrically and integrally set on both sides of the support base 105; transmission belt 107, the transmission belt 107 rotates in the middle of the device base 1.

[0024] The adjusting cylinder 2 also includes: a transmission bracket 201, which rotates around one end of the piston rod of the adjusting cylinder 2; a cooling seat 202, which rotates around one end of the transmission bracket 201; the cooling seats 202 at one end of every three sets of adjusting cylinders 2 are rotatably connected; a cooling nozzle 203, which is fixed to one side of the cooling seat 202; and a connecting seat 204, which is fixedly installed on the top of the cooling seat 202; the connecting seat 204 is connected to the connecting seat 102 via a connecting pipe.

[0025] The specific usage and function of this embodiment are as follows: When cooling the blow-molded plastic bottle, the plastic bottle is placed on the conveyor belt 107 so that the conveyor belt 107 can transfer the plastic bottle to the middle of the cooling seat 202. The external cold air supply device is activated to transfer cold air to the cooling seat 202 through the connecting seat 102. The cooling seat 202 then sprays out the cold air through the cooling nozzle 203 to cool the plastic bottle.

[0026] When cooling plastic bottles of different sizes, the adjusting cylinder 2 can be activated. The adjusting cylinder 2 will drive the cooling seat 202 to move and rotate through the transmission bracket 201. The position and angle of the cooling seat 202 will change, and can be adjusted according to the specifications of the plastic bottles to improve the uniformity of cooling treatment of the plastic bottles by the cooling seat 202.

Claims

1. A cooling device for blow molding plastic bottles, characterized in that, include: The device base (1) has six sets of adjusting cylinders (2) that rotate symmetrically inside; the device base (1) also includes: a device top plate (101), which is rectangular in shape and fixed to the top of the device base (1); and a connecting seat (102), which is rectangular in shape and has two connecting seats (102), which are symmetrically fixed to the top of the device top plate (101). The adjusting cylinder (2) further includes: a transmission bracket (201), which rotates at one end of the piston rod of the adjusting cylinder (2); a cooling seat (202), which rotates at one end of the transmission bracket (201); and the cooling seats (202) at one end of every three sets of adjusting cylinders (2) are rotatably connected.

2. The cooling device for blow molding of plastic bottles as described in claim 1, characterized in that: The device base (1) also includes: a connector (103), which is fixedly installed in the middle of one side of the connector (102); one end of the connector (103) is connected to the external air supply equipment; and a support column (104), which is rectangular in shape and has four columns, which are symmetrically fixed to the bottom of the device base (1).

3. The cooling device for blow molding of plastic bottles as described in claim 2, characterized in that: The device base (1) further includes: a support base (105), which is rectangular in shape and fixed to the bottom of the support column (104); and a fixing head (106), which is arc-shaped and has four fixing heads (106) integrated on both sides of the support base (105).

4. The cooling device for blow molding of plastic bottles as described in claim 3, characterized in that: The device base (1) also includes a transmission belt (107), which rotates in the middle of the device base (1).

5. The cooling device for blow molding of plastic bottles as described in claim 1, characterized in that: The adjusting cylinder (2) also includes a cooling nozzle (203), which is fixed to one side of the cooling seat (202).

6. The cooling device for blow molding of plastic bottles as described in claim 5, characterized in that: The adjusting cylinder (2) also includes a connecting seat (204), which is fixedly installed on the top of the cooling seat (202); the connecting seat (204) and the connecting seat (102) are connected by a connecting pipe.