Cooling structure of bottle-shaped bottom die
By designing a spiral cooling channel on the bottom mold of the bottle, the problem of short coolant flow path in traditional cooling structures is solved, achieving uniform heat dissipation and rapid cooling, thus improving the production efficiency and product quality of large-capacity bottles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional bottle-shaped bottom mold cooling structures have short coolant flow paths and uneven distribution, leading to localized heat accumulation in the mold and affecting the preform forming speed and quality. In particular, insufficient cooling in the production of large-capacity bottles can easily cause preform deformation or prolong the forming cycle.
The design adopts a spiral cooling channel, combined with independent inlet and outlet channels. By machining continuous spiral grooves on the inner arc surface of the bottom mold body and covering it with a circulating water channel base, a spiral cooling channel is formed, which extends the flow path of the coolant and achieves uniform heat dissipation.
It significantly improves heat exchange efficiency, ensures uniform temperature in all areas of the mold, avoids preform deformation, shortens cooling time, and improves blow molding efficiency, making it suitable for large-scale production of large-capacity bottles.
Smart Images
Figure CN224012947U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blow molding technology, and more specifically, to a cooling structure for a bottle-shaped bottom mold. Background Technology
[0002] In the field of blow molding, the cooling efficiency of the bottle mold base directly affects the preform forming speed and product quality. Traditional bottom mold cooling structures often employ straight or simple annular channels, resulting in short and uneven coolant flow paths. This leads to localized heat accumulation in the mold, especially in the production of large-capacity bottles, where insufficient cooling can easily cause preform deformation or prolong the forming cycle. While existing technologies have improved channel designs, they still suffer from limited cooling coverage and low heat exchange efficiency. Utility Model Content
[0003] The present invention provides a cooling structure for a bottle-shaped bottom mold, which enables uniform heat dissipation and rapid cooling to meet the high-efficiency production requirements of large-capacity bottles.
[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:
[0005] A cooling structure for a bottle-shaped bottom mold includes a bottom mold body with a spherical inner cavity. The outer arc surface of the bottom mold body is provided with a plurality of forming punches. The cooling structure also includes a circulating water channel base, which is provided with independent water inlet channels and water outlet channels.
[0006] The inner arc surface of the bottom mold body is machined with a spiral groove that continuously rotates at least three times.
[0007] The circulating water channel base covers the opening of the spiral groove through a sealing mating surface, together forming a spiral cooling flow channel;
[0008] The outlet end of the water inlet channel is sealed and connected to the inlet end of the spiral cooling channel, and the inlet end of the water outlet channel is sealed and connected to the outlet end of the spiral cooling channel, forming a closed coolant circulation path.
[0009] Preferably, the inlet end of the spiral cooling channel is located at the center of the bottom mold body, and the outlet end is located at the edge of the inner arc surface of the bottom mold body.
[0010] Preferably, the circulating water channel base is composed of three unit bases that are detachably connected in sequence. Each unit base is provided with a unit inlet section and a unit outlet section. The unit inlet sections of two adjacent unit bases are connected to form the inlet channel, and the unit outlet sections of two adjacent unit bases are connected to form the outlet channel.
[0011] Preferably, the water outlet section of the intermediate unit base is provided with a water outlet branch leading to the outside, and the extended end of the water outlet branch is provided with a detachable sealing plug.
[0012] Preferably, several base mounting holes are arranged on the edge end unit base away from the bottom die body.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] The spiral cooling flow channel formed by the spiral groove and the circulating water channel base, the cooling liquid can spiral at least three turns along the bottom die inner cavity, the contact time and the coverage area are prolonged, the heat exchange efficiency is significantly improved, the multi-turn loop design of the spiral flow channel ensures that the temperature of each area of the mold is balanced, the bottle blank deformation problem caused by local overheating is avoided, the circulating water channel base and the bottom die body are integrated through the sealing fitting surface, the installation process is simplified, and the complexity of the external pipeline is reduced, the heat of the mold is quickly taken away, the cooling time is shortened, the bottle blowing efficiency is improved, and it is especially suitable for large capacity bottle type mass production.
[0015] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the following will be the embodiment of the utility model, and the attached drawings will be described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, on the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.
[0017] Figure 1 It is the cooling structure three-dimensional schematic view of the bottle type bottom die described in the embodiment;
[0018] Figure 2 It is the first cross-sectional schematic view of the cooling structure of the bottle type bottom die described in the embodiment;
[0019] Figure 3 It is the second cross-sectional schematic view of the cooling structure of the bottle type bottom die described in the embodiment;
[0020] Figure 4 It is the inside schematic view of the bottom die body described in the embodiment;
[0021] Figure 5 It is the outside schematic view of the bottom die body described in the embodiment;
[0022] In the drawing: 1-bottom die body, 11-spiral groove, 12-forming punch, 2-spiral cooling flow channel, 3-circulating water channel base, 31-water inlet channel, 32-water outlet channel, 33-base mounting hole. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.
[0024] Please refer to Figures 1-5 The embodiment provides a cooling structure of a bottle type bottom die, which comprises a circulating water channel base 3 and a bottom die body 1 with a spherical inner cavity.
[0025] The outer arc surface of the bottom die body 1 is provided with a plurality of Figure 5 The forming punch 12 shown in the figure, the circulating water channel base 3 is provided with a water inlet channel 31 and a water outlet channel 32 which are independent of each other, the inner arc surface of the bottom die body 1 is processed with a helical groove 11 which spirals three turns continuously, as shown in the figure Figure 4 The circulating water channel base 3 covers the opening of the helical groove 11 through a sealing fitting surface, and together forms a helical cooling flow channel 2. The outlet end of the water inlet channel 31 is sealingly connected with the inlet end of the helical cooling flow channel 2, and the inlet end of the water outlet channel 32 is sealingly connected with the outlet end of the helical cooling flow channel 2, forming a closed cooling liquid circulation path.
[0026] The cooling structure processes the helical groove 11 which spirals three turns continuously on the inner arc surface of the bottom die body 1, and forms the helical cooling flow channel 2 by covering with the circulating water channel base 3, and combines the closed circulation design of the independent water inlet channel 31 and water outlet channel 32, prolongs the cooling liquid flow path. The helical flow channel increases the contact area and time of the cooling liquid with the mold, realizes efficient heat exchange, the closed circulation path avoids leakage, ensures the continuous and stable flow of the cooling liquid, and significantly improves the cooling efficiency and uniformity.
[0027] In the embodiment, the inlet end of the helical cooling flow channel 2 is located at the center of the bottom die body 1, and the outlet end is located at the edge of the inner arc surface of the bottom die body 1, so as to guide the cooling liquid to spiral and diffuse from the center to the periphery. The structure utilizes the centrifugal flow characteristics to make the cooling liquid uniformly cover the entire spherical inner cavity, eliminates local heat accumulation, further optimizes the cooling uniformity, and reduces the risk of bottle blank deformation.
[0028] In the embodiment, the circulating water channel base 3 is detachably connected by three unit bases in sequence, and each unit base is provided with a unit water inlet section and a unit water outlet section, as shown in Figure 2 And Figure 4 The unit water inlet sections of the two adjacent unit bases are connected in communication to form the water inlet channel 31, and the unit water outlet sections of the two adjacent unit bases are connected in communication to form the water outlet channel 32. Among them, the modular design facilitates the installation, disassembly and maintenance of the base, enhances the flexibility and expandability of the system.
[0029] In the embodiment, the unit water outlet section of the intermediate unit base is provided with a water outlet branch leading to the outside world, and the outer end of the water outlet branch is detachably provided with a sealing plug to realize branch drainage or pressure regulation. The design can flexibly control the flow of cooling liquid through the water outlet branch or quickly drain water during system maintenance, improve the operation convenience of the system, and avoid sealing failure caused by pressure fluctuation.
[0030] In the embodiment, as shown in Figure 1 The edge unit base away from the bottom mold body 1 is provided with a plurality of base mounting holes 33 to realize the installation of the circulating water channel base 3 at the target mounting point through bolts and other fasteners.
[0031] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A cooling structure for a bottle-shaped bottom mold, comprising a bottom mold body (1) having a spherical inner cavity, wherein the outer arc surface of the bottom mold body (1) is provided with a plurality of forming punches (12), characterized in that: It also includes a circulating water channel base (3), which is provided with an independent water inlet channel (31) and a water outlet channel (32). The inner arc surface of the bottom mold body (1) is machined with a spiral groove (11) that continuously rotates at least three times. The circulating water channel base (3) covers the opening of the spiral groove (11) through the sealing mating surface, together forming a spiral cooling channel (2); The outlet end of the water inlet channel (31) is sealed and connected to the inlet end of the spiral cooling channel (2), and the inlet end of the water outlet channel (32) is sealed and connected to the outlet end of the spiral cooling channel (2), forming a closed coolant circulation path.
2. The cooling structure of the bottle-shaped bottom mold according to claim 1, characterized in that, The inlet end of the spiral cooling channel (2) is located at the center of the bottom mold body (1), and the outlet end is located at the edge of the inner arc surface of the bottom mold body (1).
3. The cooling structure of the bottle-shaped bottom mold according to claim 1, characterized in that, The circulating water channel base (3) is composed of three unit bases that are detachably connected in sequence. Each unit base is provided with a unit inlet section and a unit outlet section. The unit inlet sections of two adjacent unit bases are connected to form the inlet channel (31), and the unit outlet sections of two adjacent unit bases are connected to form the outlet channel (32).
4. The cooling structure of the bottle-shaped bottom mold according to claim 3, characterized in that, The water outlet section of the intermediate unit base is provided with a water outlet branch leading to the outside, and the extended end of the water outlet branch is detachably equipped with a sealing plug.
5. The cooling structure of the bottle-shaped bottom mold according to claim 3, characterized in that, A number of base mounting holes (33) are provided on the edge unit base away from the bottom mold body (1).