Rotary bottle blowing machine with bottle bottom cooling device

Abstract

The utility model discloses a rotary bottle blowing machine with a bottle bottom cooling device, and belongs to the technical field of PET bottle production. Comprising a conveying star wheel, a heating machine, a first mechanical clamping hand, a bottle blowing mold, a second mechanical clamping hand and a bottle bottom cooling device, and the bottle bottom cooling device comprises a compressed air recycling assembly, a compressed air cooling channel and a bottle bottom cooling assembly; in the working process, the compressed air recycling assembly conveys recycled compressed air to the compressed air cooling channel, the compressed air is conveyed to the bottle bottom cooling assembly after being cooled through the compressed air cooling channel, and the bottle bottom cooling assembly uses the cooled compressed air for cooling the bottom of a bottle. The situation that the bottle bottom shrinks to a certain degree when not cooled in time, and consequently the performance and quality of the bottle are affected is prevented, recycled compressed air cools the bottle bottom after being cooled through the compressed air cooling channel, extra compressed air consumption is not increased, and an extra refrigerating device is not needed either.

Description

Technical Field

[0001] The utility model relates to the technical field of PET bottle production, in particular to a rotary bottle blowing machine with a bottle bottom cooling device. Background Art

[0002] The process of blowing PET bottles by a blow molding machine is to first use a heating machine to heat the preform to a certain temperature to soften the preform, and then put it into the blow molding mold to stretch and blow it into shape using high-pressure air. After the preform is blown into a bottle, the bottom of the bottle will be cooled and shaped inside the blow molding mold. The effect of cooling the bottom of the bottle will determine the performance of the bottle. The process time required for cooling the bottom of the bottle is also an important factor limiting the production capacity of the blow molding machine. Generally, the bottom of the bottle still has a certain amount of residual temperature after leaving the mold. Before filling carbonated beverages, the bottom of the bottle needs to be sprayed with cold water to cool it down so that the bottom of the bottle can obtain better performance and be suitable for filling.

[0003] The existing bottle blowing machines have the following disadvantages:

[0004] 1. Before the bottle enters the bottom cooling station in the filling area, it has already left the mold, and it takes a certain amount of time for the robot to transport it. If the bottom of the bottle is not cooled in time, it will shrink to a certain extent, affecting the performance and quality of the bottle; 2. Spraying cooling water on the bottom of the bottle causes a waste of water resources and refrigeration energy. Utility Model Content

[0005] The purpose of the utility model is to provide a rotary bottle blowing machine with a bottle bottom cooling device to solve one or all of the following problems existing in the existing bottle blowing machines:

[0006] 1. Before the bottle enters the bottom cooling station in the filling area, it has already left the mold. It takes a certain amount of time for the robot to transport it. If the bottom of the bottle is not cooled in time, it will shrink to a certain extent, affecting the performance and quality of the bottle;

[0007] 2. Spraying cooling water on the bottom of the bottle causes waste of water resources and refrigeration energy.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A rotary bottle blowing machine with a bottle bottom cooling device comprises a conveying star wheel, a heating machine, a mechanical gripper 1, a bottle blowing mold and a mechanical gripper 2. The preform enters the heating machine from the input end of the conveying star wheel for heating. The mechanical gripper 1 clamps the heated preform to the bottle blowing mold for blowing into a bottle. The mechanical gripper 2 clamps the blown bottle to the next process according to a predetermined trajectory. The bottle bottom cooling device is also included, which is used to cool the bottle bottom when the mechanical gripper 2 clamps the bottle to the next process according to a predetermined trajectory. The bottle bottom cooling device comprises:

[0010] A compressed air recovery component, which is arranged in the bottle blowing mold and is used to recover excess compressed air during the bottle blowing process of the bottle blowing mold;

[0011] A compressed air cooling channel is provided in parallel with the bottle mouth cooling water channel on the heating machine;

[0012] A bottle bottom cooling assembly, which is arranged just below the movement track of the bottle;

[0013] Among them, the compressed air recovery component transports the recovered compressed air to the compressed air cooling channel, and the compressed air is cooled by the compressed air cooling channel and then transported to the bottle bottom cooling component, and the bottle bottom cooling component uses the cooled compressed air to cool the bottom of the bottle.

[0014] As a further solution of the utility model: the bottle bottom cooling assembly includes an air duct and a plurality of nozzles, the air duct is correspondingly arranged on the movement trajectory of the bottle, and the plurality of nozzles are evenly arranged on the top of the air duct.

[0015] As a further solution of the utility model: the air outlet of the compressed air cooling channel is connected to the air inlet of the air duct through a pipeline.

[0016] As a further solution of the utility model: the compressed air recovery component includes a recovery ring pipe and a delivery pipe, the air outlet of the recovery ring pipe is connected to the air inlet of the delivery pipe, and the air outlet of the delivery pipe is connected to the air inlet of the compressed air cooling channel.

[0017] As a further solution of the utility model: it comprises a plurality of the mechanical grippers 1, and the plurality of the mechanical grippers 1 are arranged along a circular line with the gripping openings facing outwards.

[0018] As a further solution of the utility model: it comprises a plurality of the mechanical grippers 2, and the plurality of the mechanical grippers 2 are arranged along a circular line with the gripping openings facing outwards.

[0019] The utility model has the following beneficial effects:

[0020] The utility model provides a bottle bottom cooling device, which includes a compressed air recovery component, a compressed air cooling channel and a bottle bottom cooling component. When working, the compressed air recovery component conveys the recovered compressed air to the compressed air cooling channel, and the compressed air is conveyed to the bottle bottom cooling component after being cooled through the compressed air cooling channel. The bottle bottom cooling component uses the cooled compressed air to cool the bottle bottom, so as to prevent the bottle bottom from shrinking to a certain extent if it is not cooled in time and affecting the performance and quality of the bottle. The recovered compressed air is cooled through the compressed air cooling channel to cool the bottle bottom, so that no additional compressed air consumption is increased and no additional refrigeration device is needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a rotary bottle blowing machine with a bottle bottom cooling device of the utility model;

[0023] Figure 2 This is a top view schematic diagram of the bottle bottom cooling assembly of the utility model;

[0024] Figure 3 This is a front view schematic diagram of a bottle bottom cooling assembly (part) of the utility model;

[0025] Figure 4 It is a cross-sectional schematic diagram of the bottle mouth cooling water channel and the compressed air cooling channel of the utility model.

[0026] In the figure: 1. conveying star wheel; 2. heating machine; 21. bottle mouth cooling water channel; 22. heating light box; 3. mechanical gripper 1; 4. bottle blowing mold; 5. mechanical gripper 2; 6. bottle blank; 7. bottle bottom cooling device; 71. compressed air recovery component; 711. recovery ring pipe; 712. conveying pipe; 72. compressed air cooling channel; 73. bottle bottom cooling component; 731. air duct; 732. nozzle; 8. bottle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.

[0029] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] See also Figure 1-4 As shown, the utility model provides a rotary bottle blowing machine with a bottle bottom cooling device, including a conveying star wheel 1, a heating machine 2, a mechanical gripper 3, a bottle blowing mold 4, a mechanical gripper 5 and a bottle bottom cooling device 7.

[0031] During operation, the arranged preforms 6 enter the heating machine 2 one by one from the input end of the conveying star wheel 1 for heating. The multiple heating light boxes 22 arranged relatively to each other in the heating machine 2 heat the preforms 6 in turn. After heating, they are conveyed to the output end of the star wheel. The mechanical gripper 1 3 clamps the heated preforms 6 one by one from the output end of the star wheel to the blowing mold 4 to be blown into bottles. The multiple blowing molds 4 circulate to blow the multiple preforms 6. The mechanical gripper 2 5 clamps the blown bottles 8 according to a predetermined trajectory to the filling machine star wheel or the air delivery channel.

[0032] When the mechanical gripper 2 5 grips the blown bottle 8 along a predetermined trajectory and takes it to the next process, the bottle bottom cooling device 7 cools the bottom of each bottle 8 .

[0033] The bottle bottom cooling device 7 includes a compressed air recovery component 71, a compressed air cooling channel 72 and a bottle bottom cooling component 73. The compressed air recovery component 71 is arranged in the bottle blowing mold 4, and is used to recover the excess compressed air in the bottle blowing process of the bottle blowing mold 4; the compressed air cooling channel 72 is opened in parallel with the bottle mouth cooling water channel 21 on the heating machine 2, and the bottle bottom cooling component 73 is arranged directly below the movement trajectory of the bottle 8.

[0034] During operation, the compressed air recovery component 71 transports the recovered compressed air to the compressed air cooling channel 72. The compressed air is cooled by the compressed air cooling channel 72 and then transported to the bottle bottom cooling component 73. The bottle bottom cooling component 73 uses the cooled compressed air to cool the bottom of the bottle 8.

[0035] Specifically, if Figure 2 As shown, the bottle bottom cooling assembly 73 includes an air duct 731 and a plurality of nozzles 732. The air duct 731 is arranged correspondingly on the movement trajectory of the bottle 8, and the plurality of nozzles 732 are evenly arranged on the top of the air duct 731. The air outlet of the compressed air cooling channel 72 is connected to the air inlet of the air duct 731 through a pipeline.

[0036] like Figure 3 As shown, the compressed air is cooled through the compressed air cooling channel 72 and then transported to the air duct 731. Multiple nozzles 732 spray the cooled compressed air toward the bottom of the bottle 8, thereby cooling the bottom of the bottle 8 to prevent the bottom from shrinking due to untimely cooling, which may affect the performance and quality of the bottle 8.

[0037] The compressed air recovery component 71 includes a recovery ring pipe 711 and a delivery pipe 712. The air outlet of the recovery ring pipe 711 is connected to the air inlet of the delivery pipe 712. The air outlet of the delivery pipe 712 is connected to the air inlet of the compressed air cooling channel 72. When the equipment is operating normally for bottle blowing, the bottle blowing valve group will recycle excess compressed air into the recovery ring pipe 711. The recovered compressed air is delivered to the compressed air cooling channel 72 for cooling through the delivery pipe 712. The recovered compressed air is cooled through the compressed air cooling channel 72 and then used to cool the bottom of the bottle. No additional compressed air consumption is added and no additional refrigeration device is required.

[0038] Preferably, there are multiple mechanical grippers 1 3 and multiple mechanical grippers 2 5, and the multiple mechanical grippers 1 3 and multiple mechanical grippers 2 5 are arranged along a circular line with the clamping openings facing outwards.

[0039] The working principle of this utility model:

[0040] The arranged preforms 6 enter the heating machine 2 one by one from the input end of the conveying star wheel 1 for heating. The multiple heating light boxes 22 in the heating machine 2 heat the preforms 6 in turn. After heating, they are conveyed to the output end of the star wheel. During the heating process of the heating light box 22, the bottle mouth cooling water channel 21 is passed through the cold water circulation cooling to protect the bottle mouth support ring from softening. The mechanical gripper 3 clamps the heated preforms 6 one by one from the output end of the star wheel to the blowing mold 4 for blowing into bottles. The multiple blowing molds 4 circulate to blow the multiple preforms 6. When blowing, the blowing valve group recycles the excess compressed air to the recycling ring pipe 7 11, the recovered compressed air is transported to the compressed air cooling channel 72 through the delivery pipe 712, and the circulating cold water in the bottle mouth cooling water channel 21 also cools the compressed air in the compressed air cooling channel 72; the mechanical gripper 2 5 clamps the blown bottle 8 according to a predetermined trajectory to the star wheel or the air delivery channel of the filling machine. During the operation of the bottle 8, the cooled compressed air is transported from the compressed air cooling channel 72 to the air duct 731, and the multiple nozzles 732 spray the cooled compressed air in the air duct 731 to the bottom of the bottle 8 to cool the bottom of the bottle.

[0041] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rotary bottle blowing machine with a bottle bottom cooling device, comprising a conveying star wheel (1), a heating machine (2), a mechanical gripper (3), a bottle blowing mold (4) and a mechanical gripper (5), wherein a bottle blank (6) enters the heating machine (2) from the input end of the conveying star wheel (1) for heating, the mechanical gripper (3) clamps the heated bottle blank (6) to the bottle blowing mold (4) for blowing into a bottle, and the mechanical gripper (5) clamps the blown bottle (8) to the next process according to a predetermined trajectory, characterized in that: It also includes a bottle bottom cooling device (7) for cooling the bottle bottom of the bottle (8) when the second mechanical gripper (5) grips the bottle (8) along a predetermined trajectory to the next process, and the bottle bottom cooling device (7) includes: A compressed air recovery component (71), which is arranged in the bottle blowing mold (4) and is used to recover excess compressed air during the bottle blowing process of the bottle blowing mold (4); A compressed air cooling channel (72) is provided in parallel with the bottle mouth cooling water channel (21) on the warming machine (2); A bottle bottom cooling assembly (73) disposed directly below the movement trajectory of the bottle (8); The compressed air recovery component (71) conveys the recovered compressed air to the compressed air cooling channel (72), and the compressed air is cooled in the compressed air cooling channel (72) and then conveyed to the bottle bottom cooling component (73), and the bottle bottom cooling component (73) uses the cooled compressed air to cool the bottle bottom of the bottle (8).

2. A rotary bottle blowing machine with a bottle bottom cooling device according to claim 1, characterized in that: The bottle bottom cooling assembly (73) comprises an air duct (731) and a plurality of nozzles (732); the air duct (731) is arranged correspondingly on the movement track of the bottle (8); and the plurality of nozzles (732) are evenly arranged on the top of the air duct (731).

3. A rotary bottle blowing machine with a bottle bottom cooling device according to claim 2, characterized in that: The air outlet of the compressed air cooling channel (72) is connected to the air inlet of the air duct (731) through a pipeline.

4. The rotary bottle blowing machine with a bottle bottom cooling device according to claim 1, characterized in that: The compressed air recovery component (71) comprises a recovery ring pipe (711) and a delivery pipe (712), the air outlet of the recovery ring pipe (711) is connected to the air inlet of the delivery pipe (712), and the air outlet of the delivery pipe (712) is connected to the air inlet of the compressed air cooling channel (72).

5. The rotary bottle blowing machine with a bottle bottom cooling device according to claim 1, characterized in that: It comprises a plurality of mechanical grippers (3), wherein the plurality of mechanical grippers (3) are arranged along a circular line with the gripping openings facing outwards.

6. A rotary bottle blowing machine with a bottle bottom cooling device according to claim 5, characterized in that: It comprises a plurality of mechanical grippers 2 (5), and the plurality of mechanical grippers 2 (5) are arranged along a circular line with the gripping openings facing outwards.

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