WO2021047165A1

WO2021047165A1 - Bottom die of bottle blowing machine

Info

Publication number: WO2021047165A1
Application number: PCT/CN2020/081549
Authority: WO
Inventors: 吴志刚; 黄孝林; 邓文洲
Original assignee: 广州达意隆包装机械股份有限公司
Priority date: 2019-09-10
Filing date: 2020-03-27
Publication date: 2021-03-18
Also published as: CN110744803A

Abstract

A bottom die of a bottle blowing machine is disclosed. Two male connectors on a quick-change base body and female connectors on the specific bottom die locking mechanism can be quickly disassembled and assembled, greatly facilitating the quick change of the bottom die; a bottom core seat is provided with a water inlet hole and a water outlet hole, and the water inlet hole and the water outlet hole are respectively in communication with the corresponding male connectors on the quick-change base body by means of pipelines; and as the male connectors are butted with the female connectors on the bottom die locking mechanism, and water pipe connectors are connected to the female connectors on the bottom die locking mechanism, cooling water can flow from the bottom die locking mechanism into the space between the bottom surface of a bottom core and the upper surface of the bottom core seat to cool the bottom of a blown preform, and the used water flows back to another female connector of the bottom die locking mechanism and then flows out. By means of the connection of the male and female connectors and the arrangement of the pipelines, the water pipe connectors are led to the bottom die locking mechanism, and the bottom die locking mechanism does not need to be replaced frequently, thereby avoiding the operation of reconnecting the water pipe connectors when replacing the bottom die, and facilitating the quick change of the bottom die.

Description

Bottom mold of bottle blowing machine

Technical field

The invention relates to a bottom mold of a bottle blowing machine.

Background technique

The bottom mold in the bottle blowing machine is connected to the bottom mold locking mechanism and is mainly used to assist the bottom forming of the preform. During the blowing process, cooling water is required to cool the bottom surface of the bottom mold to further cool the bottom of the preform to prevent the bottom of the bottle from sticking to the bottom mold due to high temperature, resulting in failure to demold. However, the existing cooling water inlet and outlet holes are all set on the bottom mold. Therefore, the water pipe joints are all connected to the bottom mold. Since different preforms need to be replaced during the production process, different bottom molds need to be replaced. It is inconvenient to reconnect the water pipe joints.

Summary of the invention

The invention aims to provide a bottom mold of a bottle blowing machine that can avoid reconnection of the water pipe joint when the bottom mold is replaced, which is more conducive to rapid replacement of the bottom mold and convenient operation.

The bottom mold of the bottle blowing machine of the present invention includes a quick-change base body, a pair of male joints 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, and the upper surface of the bottom core seat A water inlet and a water outlet communicating with the internal pipeline of the bottom core seat are provided, and a bottom core with a bottle bottom cavity is also connected to the upper surface of the bottom core seat, and there is water supply between the bottom surface of the bottom core and the upper surface of the bottom core seat In the flow space, the water inlet hole and the water outlet hole on the bottom core seat are respectively communicated with the corresponding male joints on the quick-change base body through pipelines.

The bottom mold of the bottle blowing machine according to the present invention can be quickly disassembled and assembled through two male joints on the 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 and convenient operation , Save time; the bottom core seat is provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively communicated with the corresponding male connector on the quick-change base body through the pipeline, because the male connector is locked with the bottom mold The female connector on the tightening mechanism is butted, and the water pipe connector is connected to the female connector on the bottom mold locking mechanism. Therefore, the cooling water can flow from the bottom mold locking mechanism to the bottom surface of the bottom core and the upper surface of the bottom core seat. In the space of the bottom mold, the bottom core is cooled to cool the bottom of the blown preform, 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. Therefore, the operation of reconnecting the water pipe joint when replacing the bottom mold is effectively avoided. It is more conducive to the quick replacement of the bottom mold and the operation is more convenient.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is an exploded schematic diagram of Fig. 1.

Figure 3 is a schematic diagram of the bottom surface of the bottom core.

Figure 4 is a schematic diagram of the cooling water inlet and outlet pipelines.

detailed description

A bottom mold of a bottle blowing machine, as shown in Figures 1 and 2, 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, and a bottom is connected to the upper surface of the quick-change base body 1. The upper surface of the core seat 2, the bottom core seat 2 is provided with a water inlet 3 and a water outlet 4 connecting the internal pipes of the bottom core seat 2, and a bottom core 6 with a bottle bottom cavity 5 is also connected to the upper surface of the bottom core seat 2. There is a space 7 for water flow between the bottom surface of the bottom core 6 and the upper surface of the bottom core seat 2. The water inlet 3 and the water outlet 4 on the bottom core seat 2 are connected to the quick-change base body 1 through a pipeline, respectively. The corresponding male connector 21 is connected.

As shown in Figure 3, on the bottom surface of the bottom core 6 and in the space 7 where the water flow flows, there is provided a spiral protrusion 8 for guiding the flow direction of the water flow. The inner ring 9 of the spiral protrusion 8 is on the bottom core seat 2 The water inlet hole 3 is connected, and the outer ring 10 of the spiral protrusion 8 is communicated with the water outlet hole 4 on the bottom core seat 2. The water flow flows from the water inlet 3 on the bottom core seat 2 into the inner ring 9 of the spiral protrusion 8, and then the water flow gradually flows along the shape of the spiral protrusion 8 to the outer ring 10 of the spiral protrusion 8 until the spiral protrusion 8 The water outlet hole 4 on the bottom core seat 2 corresponding to the outer ring 10 of 8 flows out, and the cycle is like this to complete the cooling of the bottom core 6. Due to the unique structure of the spiral protrusion 8 that guides the flow of water, it can ensure uniform cooling of the bottom of the bottle in the bottom core 6 and prevent the bottom part of the bottle from sticking to the bottom cavity 5 due to uneven cooling and cannot be demolded. Problem, to ensure that the bottle can be demolded normally. The cooling water is gradually moved from the core of the spiral protrusion 8 to the outer ring flow channel, so that the cooling water can cool the center of the bottom core 6 first. When the preform is blown, the center of the bottom is thicker, so the temperature The temperature of the cooling water just entering the space 7 is the lowest, so the core of the bottom core 6 is cooled first, which can effectively further ensure that the bottle can be demolded normally, and the temperature of the cooling water that has cooled the core 6 gradually rises It is high, as the spiral protrusion 8 gradually flows to the periphery of the bottom core 6 to cool the thinner part of the bottom of the bottle, effectively ensuring that the entire bottom of the bottle with uneven thickness is uniformly cooled.

The upper surface of the bottom core seat 2 is provided with a boss 11, the water outlet hole 4 and the water inlet 3 are provided on the boss 11, and 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 side wall of the boss 11, and the outer edge of the bottom surface of the bottom core 6 is connected with the upper surface of the positioning ring 12. Since the bottom core seat 2 is provided with a boss 11, and the bottom surface of the bottom core 6 is partially 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 , Set the positioning ring 12 that can be in contact with 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, 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 Assembling holes 13 are provided. After the bolts or screws pass through the bottom core seat 2, the positioning ring 12 and the bottom core 6 assembling holes 13 on the outer edge of the bottom surface, the three are fastened together to realize the rapid positioning and installation of the bottom core 6. .

An annular groove 26 is provided on the outer side wall of the positioning ring 12. Through the cooperation of the annular groove 26 and the bottom mold clamping plate, the bottom mold is connected with the left and right molds of the molded bottle body, so that the left and right molds of the molding bottle are connected to each other during the mold clamping process. The mold and the bottom mold realize mutual positioning and fixation.

A base 14 is connected to the upper surface of the quick-change base body 1, and the bottom core base 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 bottle shapes of different heights.

The base 14 is provided with a counterbore 15, a ring-shaped protrusion 16 is provided on the upper surface of the quick-change base body 1, and the small diameter end of the counterbore 15 is sleeved on the outer side wall of the ring-shaped protrusion 16. The small diameter end of the counterbore 15 is matched with the annular protrusion 16 of the quick-change base body 1 to realize the quick positioning connection of the base 14.

An upper base cover 17 is provided on the upper surface of the base 14, and the bottom core holder 2 is connected to the upper surface of the base 14 through the upper base cover 17. The four corners of the upper surface of the base 14 and the upper cover 17 of the base are provided with opposite mounting holes 18, which are connected into one body by bolts or screws, and the upper cover 17 of the base is connected to the bottom surface of the bottom core seat 2. There is also a through hole 19 between them, and the two are also connected together by bolts or screws. In addition, the protrusions on the bottom surface of the upper cover 17 of the base and the large diameter end of the counterbore 15 on the base 14 are assembled as a whole to realize the installation and positioning of the upper cover 17 of the base. A through hole is provided in the middle of the upper cover 17 of the base, which can reduce its weight. Since the center of the bottom core 6 that is intact with the left and right molds during actual mold clamping may deviate from the center of the bottom mold set when the base body 14 is installed, during actual installation, the base cover 17 and the base 14 The positioning and assembly are completed first, and the bottom core holder 2 and the base upper cover 17 only need to be screwed from bottom to top through the through hole 19 with screws and other fasteners. At this time, the bottom core holder and its upper cover The part can still move within a certain range. After debugging, the actual position of the center of the bottom core is determined, and then the screws of the base cover 17 and the bottom core seat 2 are tightened from bottom to top.

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

As shown in Figure 4, which is a schematic diagram of the cooling water inlet and outlet pipelines, the quick-change base body 1 is provided with a quick-change base water inlet 22 and a quick-change base water outlet 23 at positions opposite to the two male joints 21, respectively. The base 14 is provided with a plurality of base water inlet and outlet holes 27, one of the base water inlet and outlet holes 27 is opposite to the quick-change base water inlet 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 body 1 The water outlet holes 23 of the quick-change base on 1 are opposed to each other, and an even number of base water inlet and outlet holes 27 can not only form a symmetrical and beautiful parts structure, but also allow the base 14 to be placed at will or align with the quick-change base body 1 for assembly. It is more convenient; the base cover 17 is provided with a base cover water inlet 24 and a base cover water outlet 25, wherein the base cover water inlet 24 is opposite to one of the base water inlet and outlet holes 27 on the base 14, and the base The upper cover water outlet 25 is opposite to the other of the base water inlet and outlet holes 18 on the base 14. The bottom core holder 2 is provided with a bottom core holder water inlet communicating with the water inlet pipe inside the bottom core holder 2. 2 The bottom surface of the bottom core seat 2 is also provided with a bottom core seat outlet hole communicating with the inner water outlet pipe of the bottom core seat 2. The bottom core seat inlet hole is opposite to the base upper cover water inlet 24 on the base upper cover 17, and the bottom core seat The water outlet hole is opposite to the water outlet hole 25 of the base upper cover on the base upper cover 17, and the water inlet hole 3 on the bottom core seat 2 communicates with the water inlet pipe inside, and the water outlet hole 4 communicates with the water outlet pipe inside. As shown by the vertical upward arrow below the quick-change base body 1 in Fig. 4, the cooling water flows in from the male connector 21 opposite to the quick-change base water inlet 22 on the quick-change base body 1, and flows through the base 14 accordingly. After one of the base water inlet and outlet holes 27, the base upper cover water inlet 24 on the base upper cover 17, and the bottom core seat water inlet hole on the bottom core seat 2, the bottom core seat is passed through the water inlet pipe inside the bottom core seat. The water inlet on the seat 2 flows into the space 7 where the water flow flows 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; Subsequently, the cooling water flows into the water outlet pipe inside the bottom core holder 2 through the water outlet hole 4 on the bottom core holder 2, and sequentially passes through the bottom core holder water outlet, the base cover water outlet 25, and the other base water inlet and outlet 27 The water outlet hole 23 of the quick-change base and the male joint 21 butted with the water outlet hole 23 of the quick-change base flow out, as shown by the vertical downward arrow below the quick-change base body 1 in FIG. 4. The quick-change base water inlet 22, the quick-change base water outlet 23, the base upper cover water inlet 24, and the base upper cover water outlet 25 are all countersunk holes, which facilitate the installation of a sealing ring on the step surface of the counterbore, Prevent water leakage.

Claims

A bottom mold of a bottle blowing machine, which is characterized in that 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), and the upper surface of the quick-change base body (1) Connected to the bottom core seat (2), the upper surface of the bottom core seat (2) is provided with a water inlet (3) and a water outlet (4) connected to the inner pipe of the bottom core seat (2), on the upper surface of the bottom core seat (2) A bottom core (6) with a bottle bottom cavity (5) is also connected. There is a space (7) for water flow between the bottom surface of the bottom core (6) and the upper surface of the bottom core seat (2), so The water inlet (3) and the water outlet (4) on the bottom core seat (2) are respectively communicated with the corresponding male joints (21) on the quick-change base body (1) through pipelines.
The bottom mold of a bottle blowing machine according to claim 1, characterized in that: on the bottom surface of the bottom core (6) and in the space (7) where the water flow flows, there is provided a spiral protrusion ( 8), the inner ring (9) of the spiral protrusion (8) communicates with the water inlet (3) on the bottom core seat (2), and the outer ring (10) of the spiral protrusion (8) is connected to the bottom core seat (2) The outlet hole (4) on the upper part is connected.
The bottom mold of a bottle blowing machine according to claim 2, characterized in that: the upper surface of the bottom core seat (2) is provided with a boss (11), the water outlet (4) and the water inlet (3) ) Is set on the boss (11), there is a space (7) for the water flow between the boss (11) and the bottom surface of the bottom core (6), and a positioning ring (7) is sleeved on the outer side wall of the boss (11) 12), the outer edge of the bottom surface of the bottom core (6) is connected with the upper surface of the positioning ring (12).
The bottom mold of a bottle blowing machine according to claim 3, wherein an annular groove (26) is provided on the outer side wall of the positioning ring (12).
The bottom mold of a bottle blowing machine according to any one of claims 1-4, characterized in that: a base (14) is connected to the upper surface of the quick-change base body (1), and the bottom core base (2) is connected On the upper surface of the base (14).
The bottom mold of a bottle blowing machine according to claim 5, characterized in that: the base (14) is provided with a counterbore (15), and a ring-shaped protrusion (16) is provided on the upper surface of the quick-change base body 1. ), the small diameter end of the counterbore (15) is sleeved on the outer side wall of the annular protrusion (16).
The bottom mold of a bottle blowing machine according to claim 5, characterized in that: an upper base cover (17) is provided on the upper surface of the base (14), and the bottom core seat (2) passes through the upper cover (17) of the base Connected to the upper surface of the base (14).
The bottom mold of a bottle blowing machine according to any one of claims 1-4 or 6-7, characterized in that: a steel ball lock sleeve (20) is embedded on the bottom surface of the quick-change base body (1).