Bottle blowing mold cooling structure and bottle blowing mold

Abstract

The utility model provides a bottle blowing mould cooling structure and a bottle blowing mould, the bottle blowing mould is provided with two half bottle body mould shells which are oppositely combined, the side wall of each half bottle body mould shell is internally provided with an external cooling water channel, and the external cooling water channel comprises a cooling water channel arranged in the side wall of each half bottle body mould shell; a water inlet and a water outlet are formed in the two ends of the cooling water channel respectively, and an overflow opening and a backflow opening are formed in the inner side wall of the half-bottle-body mold shell. The external cooling water path has a first communication state and a second communication state: in the first communication state, plugs are arranged in the overflow port and the reflux port, and the water inlet is communicated with the water outlet through the cooling water channel; in the second communication state, a plug is arranged in the cooling water channel, the water inlet is communicated with the overflow port through at least part of the cooling water channel, and the water outlet is communicated with the backflow port through at least part of the cooling water channel. The mold shell solves the problem that a mold shell with a cooling water path structure cannot be used for fixing a resin bottle body mold with a water path structure inside, and the application range of the mold shell is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle blowing molds, in particular to a bottle blowing mold cooling structure and a bottle blowing mold. Background Art

[0002] The heat exchange system in the bottle blowing mold is crucial to the quality and efficiency of product molding, so the selection of cooling pipelines and cooling media is very important, and the best cooling pipeline should be designed according to the characteristics of the product. For example, a split PET bottle blowing mold is designed to directly form a bottle body mold and a fixed mold shell for the bottle appearance. The bottle body mold for the bottle appearance can be made by 3D resin printing or machined from metal materials. In other words, the fixed mold shell made of metal can fix both the resin bottle body mold and the metal bottle body mold. During the bottle blowing process, the heated preform will bring a lot of heat, and the thermal conductivity of the resin material is much smaller than that of the metal material. Therefore, the cooling requirements of the resin bottle body mold and the metal bottle body mold are different. The resin bottle body mold is designed with a cooling water channel inside to enhance its cooling efficiency, and the metal bottle body mold only needs to cool the mold shell.

[0003] However, in the prior art, a cooling water channel is usually only provided in the side wall of a metal fixed mold shell. If the fixed mold shell is used to fix a resin bottle body mold having an internal water channel structure, it is necessary to design a connection between the internal and external water channels. If the fixed mold shell is used to fix a metal bottle body mold without an internal water channel structure, it is necessary to form a separate water channel structure in the fixed mold shell. In summary, it is currently urgent to design a dual-purpose cooling water channel structure in the fixed mold shell. Utility Model Content

[0004] The utility model aims to provide a bottle blowing mold cooling structure and a bottle blowing mold, so as to solve the problem that a mold shell with a cooling water channel structure in the prior art cannot be used to fix a resin bottle body mold with a water channel structure inside, thereby improving the application range of the mold shell.

[0005] The above technical objectives of the utility model are mainly achieved through the following technical means:

[0006] On the one hand, the utility model provides a cooling structure for a bottle blowing mold, wherein the bottle blowing mold has two half-bottle body mold shells that are relatively combined, and an external cooling water circuit is provided in the side wall of each half-bottle body mold shell, wherein the external cooling water circuit includes a cooling water channel provided in the side wall of the half-bottle body mold shell, and both ends of the cooling water channel are respectively formed with a water inlet and a water outlet on the outer side wall of the half-bottle body mold shell, and an overflow port and a reflux port are provided on the inner side wall of the half-bottle body mold shell, and the overflow port and the reflux port are respectively connected with the water inlet and the water outlet through at least a part of the cooling water channel;

[0007] The external cooling water channel has a first connection state and a second connection state:

[0008] In the first connected state, the overflow port and the return port are both provided with plugs, and the water inlet and the water outlet are connected through the cooling water channel;

[0009] In the second connected state, a plug is provided in the cooling water channel, the water inlet is communicated with the overflow port through at least a portion of the cooling water channel, and the water outlet is communicated with the return port through at least a portion of the cooling water channel.

[0010] The cooling structure of the bottle blowing mold described in the utility model has two different connection states for the external cooling water channel arranged on the half-bottle body mold shell, which are respectively used to cooperate with different types of bottle body molds. The half-bottle body mold shell can use its own external cooling water channel to cool the bottle blank in the bottle body mold, and can also switch to a mode of directly passing cooling water into the bottle body mold to cool the bottle blank through the internal cooling water channel of the bottle body mold itself. The above two different connection states can be switched according to actual needs, thereby increasing the application range of the mold shell.

[0011] In a preferred embodiment of the present invention, the bottle blowing mold also has two half-bottle body molds fixed in the two half-bottle body mold shells; in the second connected state, an internal cooling water circuit is provided in the side wall of the half-bottle body mold, and the internal cooling water circuit has an overflow interface and a reflux interface formed on the outer side wall of the half-bottle body mold, the overflow interface is connected to the overflow port, and the reflux interface is connected to the reflux port.

[0012] In this embodiment, the two half-bottle body molds are pressed and fixed in the two half-bottle body mold shells, and at the same time, the connection between the inner cooling water channel and the outer cooling water channel is realized, ensuring that in the second connected state, the cooling water in the outer cooling water channel can smoothly flow into the inner cooling water channel.

[0013] In a preferred embodiment of the present invention, the water inlet and the water outlet are located at the same end of the half-bottle body mold.

[0014] In this embodiment, the water inlet and the water outlet are arranged on the same side of the half-bottle body mold, so that the external cooling water channel has an overall symmetrical structure, thereby improving the uniformity of the cooling effect of the half-bottle body mold; at the same time, the water inlet and the water outlet arranged on the same side can also facilitate the installation and arrangement of the water pipes.

[0015] In a preferred embodiment of the present invention, the cooling water channel includes a first channel, a second channel and a third channel connected in sequence, one end of the first channel and one end of the third channel respectively form the water inlet and the water outlet, the first channel and the third channel extend along the length direction of the half bottle body mold, and the second channel is located at the end of the half bottle body mold away from the water inlet; the water flow direction in the first channel is opposite to the water flow direction in the third channel.

[0016] In this embodiment, the first channel and the third channel connected by the second channel play a major cooling role. The cooling water enters the first channel through the water inlet and flows along the first direction. After passing through the second channel, it enters the third channel and flows in the opposite direction of the first direction, and then flows out from the water outlet. That is, a cooling water channel with an overall U-shaped loop is opened in the half-bottle body mold shell, which can bring better cooling effect.

[0017] In a preferred embodiment of the present utility model, the cooling water channel also includes a water inlet channel opened at the water inlet and a water outlet channel opened at the water outlet, the water inlet channel is connected to the first channel, and the water outlet channel is connected to the third channel.

[0018] In this embodiment, the positions of the first channel and the third channel are usually relatively fixed. In order to facilitate appropriate adjustment of the positions of the water inlet and the water outlet, a water inlet channel and a water outlet channel are respectively opened at one end of the first channel and the third channel; at the same time, the setting of the water inlet channel and the water outlet channel can also enhance the cooling effect of the mold shell.

[0019] In a preferred embodiment of the present invention, the first channel, the third channel, the water inlet channel and the water outlet channel are all straight-flow channels machined through machining.

[0020] In this embodiment, the corresponding direct current channel is drilled on the half-bottle body mold shell by directly drilling holes, so the processing and manufacturing cost is relatively low and the manufacturing and molding efficiency of the cooling water channel is high.

[0021] In a preferred embodiment of the present invention, the water inlet channel and the second channel are perpendicular to the first channel, and the water outlet channel and the second channel are perpendicular to the first channel.

[0022] In this embodiment, the water flow direction in the water inlet channel, the second channel and the water outlet channel is perpendicular to the water flow direction in the first channel and the second channel, that is, the cooling water can flow in the length direction and the width direction of the half-bottle body mold at the same time, thereby improving the uniformity of the cooling effect at different positions of the half-bottle body mold.

[0023] In a preferred embodiment of the present invention, the cooling water channel includes a first channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel and a third channel connected in sequence, one end of the first channel and one end of the third channel respectively form the water inlet and the water outlet, the first channel, the third channel, the fifth channel and the seventh channel extend along the length direction of the half bottle body mold, the fourth channel and the eighth channel are located at one end of the half bottle body mold away from the water inlet, and the sixth channel is located at one end of the water inlet.

[0024] In this embodiment, a U-shaped water channel structure is formed between the first channel, the fourth channel and the fifth channel, an inverted U-shaped water channel structure is formed between the fifth channel, the sixth channel and the seventh channel, and a U-shaped water channel structure is also formed between the seventh channel, the eighth channel and the third channel. The multiple U-shaped water channels formed can enable the cooling water to flow back and forth multiple times in the length direction of the half-bottle body mold, thereby improving its cooling effect.

[0025] In a preferred embodiment of the present utility model, the cooling water channel also includes a water inlet channel opened at the water inlet and a water outlet channel opened at the water outlet, the water inlet channel is connected to the first channel, and the water outlet channel is connected to the third channel.

[0026] In this embodiment, the positions of the first channel and the third channel are usually relatively fixed. In order to facilitate appropriate adjustment of the positions of the water inlet and the water outlet, a water inlet channel and a water outlet channel are respectively opened at one end of the first channel and the third channel; at the same time, the setting of the water inlet channel and the water outlet channel can also enhance the cooling effect of the mold shell.

[0027] In a preferred embodiment of the present utility model, the first channel, the third channel, the fourth channel, the fifth channel, the sixth channel, the seventh channel, the eighth channel, the water inlet channel and the water outlet channel are all direct current channels machined through machining.

[0028] In this embodiment, the corresponding direct current channel is drilled on the half-bottle body mold shell by directly drilling holes, so the processing and manufacturing cost is relatively low and the manufacturing and molding efficiency of the cooling water channel is high.

[0029] In a preferred embodiment of the present utility model, the water inlet channel and the fourth channel are perpendicular to the first channel, the fourth channel and the sixth channel are perpendicular to the fifth channel, the sixth channel and the eighth channel are perpendicular to the seventh channel, and the water outlet channel of the eighth channel is perpendicular to the third channel.

[0030] In this embodiment, the water flow direction in the water inlet channel, the fourth channel, the sixth channel, the eighth channel and the water outlet channel is perpendicular to the water flow direction in the first channel, the second channel, the fifth channel and the seventh channel, that is, the cooling water can flow in the length direction and the width direction of the half bottle body mold at the same time, thereby improving the uniformity of the cooling effect at different positions of the half bottle body mold.

[0031] In a preferred embodiment of the present invention, the water flow direction in the first channel is opposite to the water flow direction in the third channel, the water flow direction in the fifth channel is opposite to the water flow direction in the seventh channel, and the water flow direction in the first channel is opposite to the water flow direction in the fifth channel.

[0032] On the other hand, the utility model also provides a bottle blowing mold, which includes:

[0033] Two half-bottle body mold shells are relatively combined, and the above-mentioned bottle blowing mold cooling structure is arranged in both of the half-bottle body mold shells;

[0034] Two half-bottle body molds are relatively matched, and the two half-bottle body molds are arranged in the two half-bottle body mold shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0036] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0037] Figure 1 This is a structural schematic diagram of the half-bottle body mold shell of the utility model in a first connected state;

[0038] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0039] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the middle BB direction;

[0040] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure in the CC direction;

[0041] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure in the middle DD direction;

[0042] Figure 6 This is a structural schematic diagram of the half-bottle body mold shell of the utility model in the second connected state;

[0043] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along the EE direction;

[0044] Figure 8 for Figure 6 Schematic diagram of the cross-sectional structure in the FF direction;

[0045] Fig. 9 for Figure 6 Schematic diagram of the cross-sectional structure along the GG axis;

[0046] Fig.10 for Figure 6 A schematic diagram of the cross-sectional structure along the middle HH direction;

[0047] Fig.11 It is a structural schematic diagram of another embodiment of the utility model;

[0048] Fig.12 for Fig.11 Schematic diagram of the cross-sectional structure along the II direction;

[0049] Fig.13 for Fig.11 Schematic diagram of the cross-sectional structure along the JJ axis;

[0050] Fig.14 for Fig.11 Schematic diagram of the cross-sectional structure along the KK axis.

[0051] Description of reference numerals:

[0052] 100, half bottle body mold shell;

[0053] 10. cooling water channel; 11. first channel; 12. second channel; 13. third channel; 14. fourth channel; 15. fifth channel; 16. sixth channel; 17. seventh channel; 18. eighth channel;

[0054] 20. Water inlet; 21. Water inlet channel;

[0055] 30. water outlet; 31. water outlet channel;

[0056] 40. Overflow port; 41. Overflow channel;

[0057] 50. reflux port; 51. reflux channel;

[0058] 60. The first plug; 61. The second plug; 62. The third plug; 63. The fourth plug; 64. The fifth plug; 65. The sixth plug; 66. The seventh plug; 67. The eighth plug; 68. The ninth plug. DETAILED DESCRIPTION

[0059] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0060] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0062] Implementation method 1:

[0063] like Figures 1 to 10 As shown, a cooling structure of a bottle blowing mold is provided. The bottle blowing mold has two half-bottle body mold shells 100 that are relatively combined. An external cooling water path is provided in the side wall of each half-bottle body mold shell 100. The external cooling water path includes a cooling water channel 10 provided in the side wall of the half-bottle body mold shell 100. Two ends of the cooling water channel 10 are formed on the outer side wall of the half-bottle body mold shell 100 to form a water inlet 20 and a water outlet 30, respectively. An overflow port 40 and a return port 50 are provided on the inner side wall of the half-bottle body mold shell 100. The overflow port 40 and the return port 50 are respectively connected to the water inlet 20 and the water outlet 30 through at least part of the cooling water channel 10.

[0064] The external cooling water channel has a first connection state and a second connection state:

[0065] In the first connected state, the overflow port 40 and the return port 50 are both provided with a first plug 60, and the water inlet 20 and the water outlet 30 are connected through the cooling water channel 10;

[0066] In the second connection state, a plug is provided in the cooling water channel 10 , the water inlet 20 is communicated with the overflow port 40 through at least a portion of the cooling water channel 10 , and the water outlet 30 is communicated with the return port 50 through at least a portion of the cooling water channel 10 .

[0067] The cooling structure of the bottle blowing mold described in the utility model has two different connection states for the external cooling water channel arranged on the half-bottle body mold shell 100, which are respectively used to cooperate with different types of bottle body molds. The half-bottle body mold shell 100 can use its own external cooling water channel to cool the bottle blank in the bottle body mold, and can also switch to a mode of directly passing cooling water into the bottle body mold to cool the bottle blank through the internal cooling water channel of the bottle body mold itself. The above two different connection states can be switched according to actual needs, thereby increasing the application range of the mold shell.

[0068] The specific structure and different connection states of the external cooling water channel of the bottle blowing mold cooling structure of the utility model will be described in detail below.

[0069] The two opposing half-bottle body molds 100 are both provided with external cooling water circuits. Since the external cooling water circuits in the two half-bottle body molds 100 are basically the same, for the sake of convenience of explanation, the accompanying drawings only schematically show the structure of one of the half-bottle body molds 100, and the following text also only describes in detail the structure of the external cooling water circuit in one half-bottle body mold 100.

[0070] Specifically, Figure 1 and Figure 2 As shown, adjacent water inlets 20 and water outlets 30 are provided on the outer side wall of one end of the half-bottle body mold 100. The water inlet 20 and the water outlet 30 are arranged on the same side of the half-bottle body mold 100, so that the external cooling water path is symmetrical as a whole, improving the uniformity of the cooling effect of the half-bottle body mold 100; at the same time, the water inlet 20 and the water outlet 30 arranged on the same side can also facilitate the installation and arrangement of the external water pipe.

[0071] One or more cooling water channels 10 connected to the water inlet 20 and the water outlet 30 are opened in the side wall of the half-bottle body mold 100. The cooling water channel 10 is a continuous hole opened in the half-bottle body mold 100 for cooling water to flow. It can be opened according to actual cooling needs, and the specific conducting direction of the cooling water channel 10 is no longer specifically limited here; of course, the present invention also provides two cooling water channels 10 with different structures in the preferred embodiment below.

[0072] The water inlet 20 can be connected to an external cooling water supply pipe (not shown in the figure), and the water outlet 30 can be connected to an external cooling water return pipe (not shown in the figure). The cooling water in the cooling water supply pipe enters the cooling water channel 10 through the water inlet 20, and can cool the bottle embryo while flowing in the cooling water channel 10, and then flows into the cooling water return pipe through the water outlet 30.

[0073] Further, such as Figure 1 and Figure 3 As shown, an overflow port 40 and a return port 50 are provided on the inner side wall of the half-bottle body mold shell 100, and both the overflow port 40 and the return port 50 are connected to the cooling water channel 10. In the extending direction of the cooling water channel 10, the overflow port 40 is arranged close to the water inlet 20, that is, the overflow port 40 can be connected to the water inlet 20 through a part of the cooling water channel 10; along the extending direction of the cooling water channel 10, the return port 50 is arranged close to the water outlet 30, that is, the return port 50 is connected to the water outlet 30 through a part of the cooling water channel 10.

[0074] According to different cooling requirements of the mold, the external cooling water channel in the half-bottle body mold shell 100 has two different connection states.

[0075] In the first connected state, two half-bottle molds (not shown) are fixed in the two half-bottle molds 100. The half-bottle molds are usually made of metal materials with high thermal conductivity. Therefore, no corresponding cooling water channel is provided in the side wall of the half-bottle mold. That is, only the external cooling water channel in the half-bottle mold 100 can meet the cooling requirements. At this time, the external cooling water channel is in the first connected state, corresponding to Figures 1 to 5 The structure shown.

[0076] Specifically, Figure 1 and Figure 3 As shown, the entire cooling water channel 10 is in a fully conductive state, and a first plug 60 is provided in the overflow port 40 and the return port 50 for blocking the overflow port 40 and the return port 50 to prevent the cooling water in the cooling water channel 10 from flowing out through the overflow port 40 or the return port 50. Figure 1 As shown, the flow direction of the cooling water is: water inlet 20 → entire cooling water channel 10 → water outlet 30 .

[0077] In the second connected state, two half-bottle molds are fixed in the two half-bottle molds 100. The half-bottle molds are usually made of resin materials with low thermal conductivity. The external cooling water path in the half-bottle mold 100 cannot meet the cooling requirements. Therefore, an internal cooling water path is opened in the side wall of the half-bottle mold. The internal cooling water path is connected to the overflow port 40 and the return port 50 on the half-bottle mold 100. The cooling water flowing into the water inlet 20 can flow into the internal cooling water path through the overflow port 40, and the cooling water in the internal cooling water path can flow to the water outlet 30 through the return port 50. At this time, the external cooling water path is in the second connected state, corresponding to Figures 6 to 10 The structure described.

[0078] Specifically, Figure 6 and Figure 8 As shown, at this time, the cooling water channel 10 is in a cut-off state, and two second plugs 61 are provided in the cooling water channel 10. Along the flow direction of cooling water in the cooling water channel 10, one of the second plugs 61 is provided at the downstream position of the overflow port 40, and the other second plug 61 is provided at the upstream position of the reflux port 50, that is, the two second plugs 61 can block part of the cooling water channel 10 between the overflow port 40 and the reflux port 50, thereby blocking the direct connection between the water inlet 20 and the water outlet 30 through the cooling water channel 10. The first plug 60 is not provided in the overflow port 40 and the reflux port 50. The inner cooling water channel in the half-bottle body mold has an overflow interface and a reflux interface formed on the outer wall of the half-bottle body mold. The overflow interface can be connected to the overflow port 40, and the reflux interface can be connected to the reflux port 50. The cooling water flowing into the inner cooling water channel from the overflow interface can flow out through the reflux interface. At this time, Figure 6 and Figure 8 As shown, the flow direction of cooling water is: water inlet 20 → part of cooling water channel 10 → overflow port 40 → overflow interface → internal cooling water channel → reflux interface → reflux port 50 → part of cooling water channel 10 → water outlet 30.

[0079] The structure and technical effects of the preferred embodiment of the bottle blowing mold cooling structure of the utility model will be further described below.

[0080] According to one embodiment of the present utility model, Figures 11 to 14 As shown, the cooling water channel 10 includes a first channel 11, a second channel 12 and a third channel 13 which are connected in sequence. A water inlet 20 and a water outlet 30 are formed at one end of the first channel 11 and one end of the third channel 13 respectively. The first channel 11 and the third channel 13 extend along the length direction of the half-bottle body mold 100, and the second channel 12 is located at the end of the half-bottle body mold 100 away from the water inlet 20; the water flow direction in the first channel 11 is opposite to the water flow direction in the third channel 13.

[0081] The first channel 11 and the third channel 13 connected by the second channel 12 play a major cooling role. The cooling water enters the first channel 11 through the water inlet 20 and flows in the first direction. After passing through the second channel 12, it enters the third channel 13 and flows in the opposite direction of the first direction, and then flows out from the water outlet 30. That is, a cooling water channel 10 in an overall U-shape is opened in the half-bottle body mold shell 100, which can bring better cooling effect.

[0082] Specifically, Figure 1 As shown, the first channel 11 and the third channel 13 are both direct current channels extending along the length direction of the half-bottle body mold 100, and the first channel 11 and the third channel 13 are both formed by mechanical drilling; in this embodiment, the first channel 11 and the third channel 13 both pass through both ends of the half-bottle body mold 100, that is, the first channel 11 and the third channel 13 are both through long holes. The third plugs 62 are provided at both ends of the first channel 11 and the third channel 13, and the third plugs 62 can close both ends of the first channel 11 and the third channel 13.

[0083] like Fig.11 and Fig.12 As shown, a water inlet channel 21 is provided at the upper end of the half-bottle body mold 100, which is perpendicular to and connected to the first channel 11 and is formed by mechanical drilling; the water inlet channel 21 is a through hole extending in the tangential direction of the half-bottle body mold 100, one end of the through hole forms a water inlet 20, and the other end is provided with a fifth plug 64 for blocking the connection between the water inlet channel 21 and the outside world. A water outlet channel 31 is also provided at the upper end of the half-bottle body mold 100, which is perpendicular to and connected to the third channel 13 and is formed by mechanical drilling; the water outlet channel 31 is a through hole extending in the tangential direction of the half-bottle body mold 100, one end of the through hole forms a water outlet 30, and the other end is also provided with a fifth plug 64 for blocking the connection between the water outlet channel 31 and the outside world. The water inlet channel 21 and the water outlet channel 31 are symmetrically arranged with respect to the center of the half-bottle body mold 100, and the water inlet 20 and the water outlet 30 are adjacent.

[0084] Further, such as Fig.11 and Fig.14As shown, a second channel 12 connecting the first channel 11 and the third channel 13 is provided at the lower end of the half-bottle body mold 100, which is formed by mechanical drilling; the second channel 12 includes two long holes extending along two different tangential directions starting from the middle position of the half-bottle body mold 100, the other ends of the two long holes do not pass through the side wall of the half-bottle body mold 100, and the two long holes are connected, one of the long holes is perpendicular to and connected with the first channel 11, and the other long hole is perpendicular to and connected with the third channel 13. A fourth plug 63 is provided at the intersection of the two long holes (that is, the position where the second channel 12 passes through the half-bottle body mold 100) to block the connection between the second channel 12 and the outside.

[0085] Furthermore, Fig.11 and Fig.13 As shown, an overflow channel 41 extending in the tangential direction thereof is provided at a position near the upper end of the half-bottle body mold 100, and is formed by mechanical drilling; one end of the overflow channel 41 does not pass through the side wall of the half-bottle body mold 100, and a sixth plug 65 is provided at the other end thereof for blocking the connection between the overflow channel 41 and the outside. Among them, along the length direction of the half-bottle body mold 100, the overflow channel 41 is located between the water inlet channel 21 and the second channel 12 and is provided close to the water inlet channel 21, the overflow channel 41 is perpendicular to and connected to the first channel 11, and an overflow port 40 connected to the overflow channel 41 is provided at a position corresponding to the overflow channel 41 on the inner side wall of the half-bottle body mold 100.

[0086] A reflux channel 51 extending in the tangential direction is also provided near the upper end of the half-bottle body mold 100 and is formed by mechanical drilling; one end of the reflux channel 51 does not pass through the side wall of the half-bottle body mold 100, and a sixth plug 65 is provided at the other end to block the connection between the reflux channel 51 and the outside. In the longitudinal direction of the half-bottle body mold 100, the reflux channel 51 is located between the water outlet channel 31 and the second channel 12 and is provided close to the water outlet channel 31; the reflux channel 51 is perpendicular to and connected to the third channel 13, and a reflux port 50 connected to the reflux channel 51 is provided on the inner side wall of the half-bottle body mold 100 at a position corresponding to the reflux channel 51.

[0087] In this embodiment, when the external cooling water channel is in the first connected state, Fig.11 As shown, the flow direction of cooling water is:

[0088] Water inlet 20 →water inlet channel 21 →first channel 11 →second channel 12 →third channel 13 →water outlet channel 31 →water outlet 30 .

[0089] When the external cooling water channel is in the second connected state, the two second plugs 61 are respectively arranged at the lower end of the first channel 11 and the lower end of the third channel 13, and one of them is located above the connection position of the first channel 11 and the second channel 12, and the other is located above the connection position of the third channel 13 and the second channel 12; that is, along the flow direction of the cooling water, one of them is arranged upstream of the connection position of the first channel 11 and the second channel 12, and the other is arranged downstream of the connection position of the third channel 13 and the second channel 12. At this time, the flow direction of the cooling water is:

[0090] Water inlet 20 → first channel 11 → overflow channel 41 → overflow port 40 → overflow interface → internal cooling water channel → reflux interface → reflux port 50 → reflux channel 51 → third channel 13 → water outlet 30 .

[0091] According to one embodiment of the present utility model, Figures 1 to 5 As shown, another cooling water channel structure with better cooling effect is provided. In this embodiment, the cooling water channel 10 includes a first channel 11, a fourth channel 14, a fifth channel 15, a sixth channel 16, a seventh channel 17, an eighth channel 18 and a third channel 13 connected in sequence, one end of the first channel 11 and one end of the third channel 13 form a water inlet 20 and a water outlet 30 respectively, the first channel 11, the third channel 13, the fifth channel 15 and the seventh channel 17 extend along the length direction of the half-bottle body mold 100, the fourth channel 14 and the eighth channel 18 are located at the end of the half-bottle body mold 100 away from the water inlet 20, and the sixth channel 16 is located at one end of the water inlet 20. The cooling water channel 10 also includes a water inlet channel 21 opened at the water inlet 20 and a water outlet channel 31 opened at the water outlet 30, the water inlet channel 21 is connected to the first channel 11, and the water outlet channel 31 is connected to the third channel 13.

[0092] A U-shaped water channel structure is formed between the first channel 11, the fourth channel 14 and the fifth channel 15, an inverted U-shaped water channel structure is formed between the fifth channel 15, the sixth channel 16 and the seventh channel 17, and a U-shaped water channel structure is also formed between the seventh channel 17, the eighth channel 18 and the third channel 13. Multiple U-shaped water channels can make the cooling water flow back and forth multiple times in the length direction of the half-bottle body mold shell 100, thereby improving its cooling effect.

[0093] The water inlet channel 21, the first channel 11, the third channel 13, the water outlet channel 31, the overflow channel 41 and the reflux channel 51 are arranged as follows: Fig.11 The embodiments shown are the same and will not be described again here. Only the structures of the fourth channel 14, the fifth channel 15, the sixth channel 16, the seventh channel 17 and the eighth channel 18 will be described below.

[0094] like Figure 1and Figure 4 As shown, a fourth channel 14 extending along its tangential direction is opened at the lower end of the half-bottle body mold 100, and the fourth channel 14 is a long straight hole processed by mechanical drilling. One end of the long straight hole does not pass through the side wall of the half-bottle body mold 100, and an eighth plug 67 is provided at the other end thereof for blocking the connection between the fourth channel 14 and the outside; the fourth channel 14 is perpendicular to and connected with the first channel 11 and the fifth channel 15.

[0095] An eighth channel 18 extending along its tangential direction is also opened at the lower end of the half-bottle body mold 100. The eighth channel 18 is a long straight hole processed by mechanical drilling. One end of the long straight hole does not pass through the side wall of the half-bottle body mold 100, and the other end is also provided with an eighth plug 67 for blocking the connection between the eighth channel 18 and the outside world; the eighth channel 18 is perpendicular to and connected with the third channel 13 and the seventh channel 17.

[0096] Further, such as Figure 1 As shown, a fifth channel 15 and a seventh channel 17 extending along the length direction of the half-bottle body mold shell 100 are also provided between the first channel 11 and the third channel 13. The fifth channel 15 and the eighth channel 18 are long straight holes processed by mechanical drilling. The upper ends of the fifth channel 15 and the seventh channel 17 do not pass through the top of the half-bottle body mold shell 100. A seventh plug 66 is provided at the lower end of the fifth channel 15 to block the connection between the fifth channel 15 and the outside world, and a seventh plug 66 is also provided at the lower end of the seventh channel 17 to block the connection between the seventh channel 17 and the outside world. Among them, the fifth channel 15 is perpendicular to and connected with the fourth channel 14, and the seventh channel 17 is perpendicular to and connected with the eighth channel 18.

[0097] Furthermore, Figure 1 and Figure 3 As shown, a sixth channel 16 is provided between the upper end of the fifth channel 15 and the upper end of the seventh channel 17 to connect the two. The sixth channel 16 extends along the tangential direction of the half-bottle body mold shell 100. It is a long straight hole processed by mechanical drilling. One end of the long straight hole does not pass through the side wall of the half-bottle body mold shell 100, and the other end is provided with a ninth plug 68 to block the connection between the sixth channel 16 and the outside. The sixth channel 16 is perpendicular to and connected with the fifth channel 15, and the sixth channel 16 is perpendicular to and connected with the seventh channel 17.

[0098] In this embodiment, when the external cooling water channel is in the first connected state, Figure 1 As shown, the flow direction of cooling water is:

[0099] Water inlet 20 →water inlet channel 21 →first channel 11 →fourth channel 14 →fifth channel 15 →sixth channel 16 →seventh channel 17 →eighth channel 18 →third channel 13 →water outlet channel 31 →water outlet 30 .

[0100] When the external cooling water circuit is in the second connected state, Figure 6 As shown, two second plugs 61 are respectively arranged at the lower end of the first channel 11 and the lower end of the third channel 13, and one of them is located above the connection position of the first channel 11 and the fourth channel 14, and the other is located above the connection position of the third channel 13 and the eighth channel 18; that is, along the flow direction of the cooling water, one is arranged upstream of the connection position of the first channel 11 and the fourth channel 14, and the other is arranged downstream of the connection position of the third channel 13 and the eighth channel 18. At this time, the flow direction of the cooling water is:

[0101] Water inlet 20 → first channel 11 → overflow channel 41 → overflow port 40 → overflow interface → internal cooling water channel → reflux interface → reflux port 50 → reflux channel 51 → third channel 13 → water outlet 30 .

[0102] Implementation method 2:

[0103] A bottle blowing mold comprises: two relatively matched half-bottle body mold shells 100, each of which is provided with a bottle blowing mold cooling structure as described in the first embodiment; and two relatively matched half-bottle body molds, wherein the two half-bottle body molds are arranged in the two half-bottle body mold shells 100.

[0104] The specific structure of the half-bottle body mold shell 100 has been described in detail in the first embodiment, and will not be repeated here; a bottle blowing contour is formed inside the two relatively half-bottle body molds, and the side walls thereof may be provided with corresponding internal cooling water channels or no internal cooling water channels according to actual needs.

[0105] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A cooling structure for a bottle blowing mold, wherein the bottle blowing mold has two half-bottle body mold shells that are relatively combined, characterized in that: An external cooling water circuit is provided in the side wall of each half-bottle body mold, and the external cooling water circuit includes a cooling water channel provided in the side wall of the half-bottle body mold, and two ends of the cooling water channel are respectively formed with a water inlet and a water outlet on the outer side wall of the half-bottle body mold, and an overflow port and a reflux port are provided on the inner side wall of the half-bottle body mold; The external cooling water channel has a first connection state and a second connection state: In the first connected state, the overflow port and the return port are both provided with plugs, and the water inlet and the water outlet are connected through the cooling water channel; In the second connected state, a plug is provided in the cooling water channel, the water inlet is communicated with the overflow port through at least a portion of the cooling water channel, and the water outlet is communicated with the return port through at least a portion of the cooling water channel.

2. The bottle blowing mold cooling structure according to claim 1, characterized in that: The bottle blowing mold also has two half-bottle body molds fixed in the two half-bottle body mold shells; In the second connected state, an internal cooling water circuit is provided in the side wall of the half-bottle body mold, and the internal cooling water circuit has an overflow interface and a reflux interface formed on the outer side wall of the half-bottle body mold, the overflow interface is connected to the overflow port, and the reflux interface is connected to the reflux port.

3. The bottle blowing mold cooling structure according to claim 1, characterized in that: The water inlet and the water outlet are located at the same end of the half-bottle body mold shell.

4. The bottle blowing mold cooling structure according to claim 1, characterized in that: The cooling water channel includes a first channel, a second channel, and a third channel connected in sequence, one end of the first channel and one end of the third channel respectively form the water inlet and the water outlet, the first channel and the third channel extend along the length direction of the half bottle body mold, and the second channel is located at the end of the half bottle body mold away from the water inlet; the water flow direction in the first channel is opposite to the water flow direction in the third channel.

5. The bottle blowing mold cooling structure according to claim 4, characterized in that: The cooling water channel also includes a water inlet channel opened at the water inlet and a water outlet channel opened at the water outlet, the water inlet channel is connected to the first channel, and the water outlet channel is connected to the third channel.

6. The bottle blowing mold cooling structure according to claim 5, characterized in that: The first channel, the third channel, the water inlet channel and the water outlet channel are all direct current channels machined through machining.

7. The bottle blowing mold cooling structure according to claim 5 or 6, characterized in that: The water inlet channel and the second channel are perpendicular to the first channel, and the water outlet channel and the second channel are perpendicular to the first channel.

8. The bottle blowing mold cooling structure according to claim 1, characterized in that: The cooling water channel includes a first channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel and a third channel which are connected in sequence. One end of the first channel and one end of the third channel form the water inlet and the water outlet respectively. The first channel, the third channel, the fifth channel and the seventh channel extend along the length direction of the half-bottle body mold. The fourth channel and the eighth channel are located at one end of the half-bottle body mold away from the water inlet, and the sixth channel is located at one end of the water inlet.

9. The bottle blowing mold cooling structure according to claim 8, characterized in that: The cooling water channel also includes a water inlet channel opened at the water inlet and a water outlet channel opened at the water outlet, the water inlet channel is connected to the first channel, and the water outlet channel is connected to the third channel.

10. The bottle blowing mold cooling structure according to claim 9, characterized in that: The first channel, the third channel, the fourth channel, the fifth channel, the sixth channel, the seventh channel, the eighth channel, the water inlet channel and the water outlet channel are all direct current channels machined through machining.

11. The bottle blowing mold cooling structure according to claim 9 or 10, characterized in that: The water inlet channel and the fourth channel are perpendicular to the first channel, the fourth channel and the sixth channel are perpendicular to the fifth channel, the sixth channel and the eighth channel are perpendicular to the seventh channel, and the water outlet channel of the eighth channel is perpendicular to the third channel.

12. The bottle blowing mold cooling structure according to claim 8, characterized in that: The water flow direction in the first channel is opposite to the water flow direction in the third channel, the water flow direction in the fifth channel is opposite to the water flow direction in the seventh channel, and the water flow direction in the first channel is opposite to the water flow direction in the fifth channel.

13. A bottle blowing mold, characterized in that: include: Two half-bottle body mold shells are relatively combined, and the two half-bottle body mold shells are both provided with a bottle blowing mold cooling structure as described in any one of claims 1 to 12; Two half-bottle body molds are relatively matched, and the two half-bottle body molds are arranged in the two half-bottle body mold shells.

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