A bottom mold for bottle blowing machine

Abstract

A bottom mold of a bottle blowing machine is quickly disassembled and assembled through two male joints on a quick-change base body and a female joint on a specific bottom mold locking mechanism, which is very convenient for quick replacement of the bottom mold; a water inlet hole and a water outlet hole are arranged on the bottom core seat, and the water inlet hole and the water outlet hole are connected to the corresponding male joints on the quick-change base body through pipelines respectively. Since the male joint is docked with the female joint on the bottom mold locking mechanism, the water pipe joint is connected to the female joint on the bottom mold locking mechanism, so cooling water can flow from the bottom mold locking mechanism into the space between the bottom surface of the bottom core and the upper surface of the bottom core seat to cool the bottom of the blown bottle embryo, and the used water flows back to the other female joint of the bottom mold locking mechanism and then flows out. Through the connection of the male and female joints and the setting of the pipeline, the water pipe joint is led to the bottom mold locking mechanism, and the bottom mold locking mechanism does not need to be replaced frequently, avoiding the operation of reconnecting the water pipe joint when replacing the bottom mold, which is conducive to the quick replacement of the bottom mold.

Description

Technical Field

[0001] The invention relates to a bottom mold for a bottle blowing machine. Background Art

[0002] The bottom mold in the bottle blowing machine is connected to the bottom mold locking mechanism, which is mainly used to assist in the bottom molding of the bottle preform. During the bottle blowing process, the lower surface of the bottom mold needs to be cooled by cooling water to further cool the bottom of the bottle preform to prevent the bottom of the bottle from sticking to the bottom mold due to high temperature, resulting in the inability to demold. However, the existing cooling water inlet and outlet holes are all set on the bottom mold, so the water pipe joints are all connected to the bottom mold. Since different bottom molds need to be replaced during the production process to blow different bottle preforms, the water pipe joints need to be reconnected, which is inconvenient to operate. Summary of the invention

[0003] The present invention aims to provide a bottom mold of a bottle blowing machine which can avoid reconnecting a water pipe joint when replacing the bottom mold, is more conducive to rapid replacement of the bottom mold, and is easy to operate.

[0004] A bottom mold for a bottle blowing machine described in the present invention includes a quick-change base body, a pair of male connectors are inserted into the bottom surface of the quick-change base body, a bottom core seat is connected to the upper surface of the quick-change base body, a water inlet hole and a water outlet hole connected to the internal pipeline of the bottom core seat are arranged on the upper surface of the bottom core seat, a bottom core with a bottle bottom cavity is also connected to the upper surface of the bottom core seat, a space for water flow is provided between the bottom surface of the bottom core and the upper surface of the bottom core seat, and the water inlet hole and the water outlet hole on the bottom core seat are respectively connected to the corresponding male connectors on the quick-change base body through pipelines.

[0005] The bottom mold of a bottle blowing machine described in the present invention is quickly disassembled and assembled through two male joints on a quick-change base body and a female joint on a specific bottom mold locking mechanism, which is very convenient for quick replacement of the bottom mold, easy to operate, and saves time; a water inlet hole and a water outlet hole are arranged on the bottom core seat, and the water inlet hole and the water outlet hole are connected to the corresponding male joint on the quick-change base body through pipelines respectively. Since the male joint is docked with the female joint on the bottom mold locking mechanism, the water pipe joint is connected to the female joint on the bottom mold locking mechanism, so that cooling water can flow from the bottom mold locking mechanism into the space between the bottom surface of the bottom core and the upper surface of the bottom core seat to cool the bottom core, thereby cooling the bottom of the blown bottle embryo, and the used water flows back to the other female joint of the bottom mold locking mechanism and then flows out. Through the connection of the male and female joints and the setting of the pipeline, the water pipe joint is led to the bottom mold locking mechanism, and the bottom mold locking mechanism does not need to be replaced frequently, so the operation of reconnecting the water pipe joint when replacing the bottom mold is effectively avoided, which is more conducive to the quick replacement of the bottom mold and more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the structure of the present invention.

[0007] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0008] Figure 3 It is a schematic diagram of the bottom surface structure of the bottom core.

[0009] Figure 4 This is a schematic diagram of the cooling water inlet and outlet pipes. DETAILED DESCRIPTION

[0010] A bottom mold for a bottle blowing machine, such as Figure 1 and Figure 2 As shown, it includes a quick-change base body 1, a pair of male connectors 21 are inserted into the bottom surface of the quick-change base body 1, a bottom core seat 2 is connected to the upper surface of the quick-change base body 1, and a water inlet hole 3 and a water outlet hole 4 connected to the internal pipeline of the bottom core seat 2 are arranged on the upper surface of the bottom core seat 2. A bottom core 6 with a bottle bottom cavity 5 is also connected to the upper surface of the bottom core seat 2, and a space 7 for water flow is provided between the bottom surface of the bottom core 6 and the upper surface of the bottom core seat 2, and the water inlet hole 3 and the water outlet hole 4 on the bottom core seat 2 are respectively connected to the corresponding male connector 21 on the quick-change base body 1 through pipelines.

[0011] like Figure 3 As shown, a spiral protrusion 8 for guiding the flow of water is provided on the bottom surface of the bottom core 6 and in the space 7 for the flow of water, and the inner circle 9 of the spiral protrusion 8 is connected with the water inlet hole 3 on the bottom core seat 2, and the outer circle 10 of the spiral protrusion 8 is connected with the water outlet hole 4 on the bottom core seat 2. Water flows into the inner circle 9 of the spiral protrusion 8 from the water inlet hole 3 on the bottom core seat 2, and then the water flows gradually toward the outer circle 10 of the spiral protrusion 8 along the shape of the spiral protrusion 8, until it flows out from the water outlet hole 4 on the bottom core seat 2 corresponding to the outer circle 10 of the spiral protrusion 8, and the cycle is repeated to complete the cooling of the bottom core 6. Due to the unique structure of the spiral protrusion 8, the water flow is guided, so that the bottom of the bottle in the bottom core 6 can be uniformly cooled, and the problem of the bottom of the bottle adhering to the bottom cavity 5 of the bottle and being unable to be demolded due to uneven cooling can be avoided, so that the bottle can be demolded normally. By making the cooling water gradually flow from the core of the spiral protrusion 8 toward the outer circle, the cooling water can first cool the center of the bottom core 6. Because the center of the bottom of the bottle embryo is thicker when it is blown, the temperature is also the highest. The temperature of the cooling water just entering the space 7 is the lowest. Therefore, the core of the bottom core 6 is cooled first, which can effectively further ensure that the bottle can be demoulded normally. The temperature of the cooling water that has cooled the core of the bottom core 6 gradually increases, and gradually flows to the periphery of the bottom core 6 under the guidance of the spiral protrusion 8 to cool the thinner part of the bottom of the bottle, effectively ensuring that the entire bottle bottom with uneven thickness is evenly cooled.

[0012] The upper surface of the bottom core seat 2 is provided with a boss 11, the water outlet 4 and the water inlet 3 are provided on the boss 11, there is a space 7 for water flow between the boss 11 and the bottom surface of the bottom core 6, a positioning ring 12 is sleeved on the outer wall of the boss 11, and the outer edge of the bottom surface of the bottom core 6 is connected to the upper surface of the positioning ring 12. Since the boss 11 is provided on the bottom core seat 2, and the bottom surface of the bottom core 6 is supported on the boss 11, the outer edge of the bottom surface of the bottom core 6 is suspended. In order to ensure that the bottom core 6 and the bottom core seat 2 are quickly positioned and connected, a positioning ring 12 that can contact the outer edge of the bottom surface of the bottom core 6 and the upper surface of the bottom core seat 2 at the same time is provided, and assembly holes 13 are provided on the upper surface of the positioning ring 12, the outer edge of the bottom surface of the bottom core 6, and the surface of the bottom core seat 2. After the bolts or screws pass through the assembly holes 13 on the bottom surface outer edge of the bottom core seat 2, the positioning ring 12 and the bottom surface outer edge of the bottom core 6, the three are fastened together to achieve quick positioning and installation of the bottom core 6.

[0013] An annular groove 26 is provided on the outer wall of the positioning ring 12, and the annular groove 26 cooperates with the bottom mold clamping plate to connect the bottom mold with the left mold and the right mold of the molding bottle body, so that the left and right molds and the bottom mold can be positioned and fixed to each other during the mold closing process.

[0014] A base 14 is connected to the upper surface of the quick-change base body 1, and the bottom core seat 2 is connected to the upper surface of the base 14. The height of the bottom core 6 can be adjusted by changing the height of the base 14, so that the bottom core 6 can adapt to bottles of different heights.

[0015] The base 14 is provided with a countersunk hole 15, and an annular protrusion 16 is provided on the upper surface of the quick-change base body 1. The small-diameter end of the countersunk hole 15 is sleeved on the outer wall of the annular protrusion 16. The small-diameter end of the countersunk hole 15 cooperates with the annular protrusion 16 of the quick-change base body 1 to achieve a quick positioning connection of the base 14.

[0016] A base cover 17 is provided on the upper surface of the base 14, and the base core seat 2 is connected to the upper surface of the base 14 through the base cover 17. Relative mounting holes 18 are provided at the four corners of the upper surface of the base 14 and on the base cover 17, and the two are connected as a whole by bolts or screws, and a through hole 19 is also provided between the base cover 17 and the bottom surface of the base core seat 2, and the two are also connected as a whole by bolts or screws. In addition, the protrusion on the bottom surface of the base cover 17 is assembled with the large diameter end of the countersunk hole 15 on the base 14 to realize the installation and positioning of the base cover 17. The through hole is provided in the middle of the base cover 17 to reduce its weight. Since the center of the bottom core 6 that fits perfectly with the left and right molds during actual mold closing may deviate from the center of the bottom mold determined when the base body 14 is installed, the base cover 17 and the base 14 are first positioned and assembled during actual installation, and the bottom core seat 2 and the base cover 17 only need to be screwed from bottom to top through the through hole 19 through screws and other fasteners. At this time, they are not locked, so that the bottom core seat and the parts thereon can still move within a certain range. After debugging, after determining the actual position of the bottom core center, the base cover 17 and the bottom core seat 2 are screwed from bottom to top.

[0017] A steel ball lock sleeve 20 is also embedded in the bottom surface of the quick-change base body 1, and the steel ball lock sleeve 20 is also connected to the quick-change base body 1 by bolts and screws. The steel ball lock sleeve 20 is provided to quickly align and connect with a specific bottom mold locking mechanism.

[0018] like Figure 4As shown, it is a schematic diagram of the cooling water inlet and outlet pipelines. A quick-change base water inlet hole 22 and a quick-change base water outlet hole 23 are respectively arranged at positions opposite to the two male connectors 21 on the quick-change base body 1, and a plurality of base water inlet and outlet holes 27 are arranged on the base 14, one of the base water inlet and outlet holes 27 is opposite to the quick-change base water inlet hole 22 on the quick-change base body 1, and one of the base water inlet and outlet holes 27 is opposite to the quick-change base water outlet hole 23 on the quick-change base body 1. The provision of an even number of base water inlet and outlet holes 27 can not only form a symmetrical and beautiful component structure, but also enable the base 14 to be placed arbitrarily or aligned with the quick-change base body 1, which is more convenient for assembly; the base cover 17 is provided with a base cover water inlet hole 24 and The base cover has a water outlet hole 25, wherein the base cover water inlet hole 24 is opposite to one of the base water inlet and outlet holes 27 on the base 14, and the base cover water outlet hole 25 is opposite to another of the base water inlet and outlet holes 18 on the base 14. A base inlet hole connected to the internal water inlet pipe of the base core seat 2 is provided on the bottom surface of the base core seat 2, and a base outlet hole connected to the internal water outlet pipe of the base core seat 2 is also provided on the bottom surface of the base core seat 2. The base inlet hole is opposite to the base cover water inlet hole 24 on the base cover 17, and the base outlet hole is opposite to the base cover water outlet hole 25 on the base cover 17, while the water inlet hole 3 on the base core seat 2 is connected to the internal water inlet pipe, and the water outlet hole 4 is connected to the internal water outlet pipe. Figure 4 As shown by the vertical upward arrow below the middle quick-change base body 1, cooling water flows in from the male connector 21 opposite to the quick-change base water inlet hole 22 on the quick-change base body 1, and flows through one of the base water inlet and outlet holes 27 on the base 14, the base cover water inlet hole 24 on the base cover 17, and the bottom core seat water inlet hole on the bottom core seat 2, and then flows through the water inlet pipe inside the bottom core seat and the water inlet hole on the bottom core seat 2 into the water supply flow space 7 between the bottom surface of the bottom core 6 and the upper surface of the bottom core seat 2, so that the water flow can be guided by the spiral protrusion 8 to cool the bottom core 6; then, the cooling water flows into the water outlet pipe inside the bottom core seat 2 through the water outlet hole 4 on the bottom core seat 2, and flows out through the bottom core seat water outlet hole, the base cover water outlet hole 25, another base water inlet and outlet hole 27, the quick-change base water outlet hole 23, and the male connector 21 connected to the quick-change base water outlet hole 23 in turn, as shown in FIG. Figure 4 As shown by the vertical downward arrow below the middle quick-change base body 1. The quick-change base water inlet hole 22, the quick-change base water outlet hole 23, the base cover water inlet hole 24 and the base cover water outlet hole 25 are all countersunk holes, which are convenient for setting a sealing ring on the step surface of the countersunk hole to prevent water leakage.

Claims

1. A bottom mold for a bottle blowing machine, characterized in that: The invention comprises a quick-change base body (1), a pair of male joints (21) are inserted into the bottom surface of the quick-change base body (1), a bottom core seat (2) is connected to the upper surface of the quick-change base body (1), a water inlet hole (3) and a water outlet hole (4) connected to the internal pipeline of the bottom core seat (2) are arranged on the upper surface of the bottom core seat (2), a bottom core (6) with a bottle bottom cavity (5) is also connected to the upper surface of the bottom core seat (2), and a space (7) for water flow is provided between the bottom surface of the bottom core (6) and the upper surface of the bottom core seat (2) ), the water inlet hole (3) and the water outlet hole (4) on the bottom core seat (2) are respectively connected to the corresponding male joint (21) on the quick-change base body (1) through pipelines, and a spiral protrusion (8) for guiding the flow of water is provided on the bottom surface of the bottom core (6) and in the space (7) for the water flow, the inner ring (9) of the spiral protrusion (8) is connected to the water inlet hole (3) on the bottom core seat (2), and the outer ring (10) of the spiral protrusion (8) is connected to the water outlet hole (4) on the bottom core seat (2). ), the upper surface of the bottom core seat (2) is provided with a boss (11), the water outlet hole (4) and the water inlet hole (3) are provided on the boss (11), a space (7) for water flow is provided between the boss (11) and the bottom surface of the bottom core (6), a positioning ring (12) is sleeved on the outer wall of the boss (11), the outer edge of the bottom surface of the bottom core (6) is connected to the upper surface of the positioning ring (12), an annular groove (26) is provided on the outer wall of the positioning ring (12), and the quick-change base body (1) is provided with a plurality of holes (26) on the outer wall of the positioning ring (12). ) is connected to the upper surface of the base (14), the base core seat (2) is connected to the upper surface of the base (14), a countersunk hole (15) is provided on the base (14), an annular protrusion (16) is provided on the upper surface of the quick-change base body 1, a small-diameter end of the countersunk hole (15) is sleeved on the outer side wall of the annular protrusion (16), a base cover (17) is provided on the upper surface of the base (14), and the base core seat (2) is connected to the upper surface of the base (14) through the base cover (17).

2. A bottom mold for a bottle blowing machine according to any one of claim 1, characterized in that: A steel ball lock sleeve (20) is also embedded on the bottom surface of the quick-change base body (1).

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