Bottle opening cooling and heat insulation structure of bottle blowing mold

Abstract

The utility model relates to the technical field of bottle blowing cooling, in particular to a bottle opening cooling and heat insulation structure of a bottle blowing mold, which comprises a fixing component for clamping and fixing a bottle opening, a cooling component for cooling the bottle blowing mold, and a left half mold and a right half mold for mounting the fixing component and the cooling component, the top of the inner side of the left half die and the top of the inner side of the right half die are each provided with a semi-annular heat insulation limiting plate, a left upper clamping opening is fixed to the top of the left half die through a bolt, a right upper clamping opening is fixed to the top of the right half die through a bolt, and cooling liquid is injected into a first cooling water pipe and a second cooling water pipe through a first water inlet and a second water inlet. The left upper clamping opening and the right upper clamping opening are cooled through the first cooling water pipe and the second cooling water pipe, cold air is exhausted to the bottle opening through the through groove to conduct heat preservation and shaping on the bottle opening, and deformation of the bottle opening caused by too high temperature of the bottle opening is avoided.

Description

Technical Field

[0001] This utility model relates to the field of blow molding cooling technology, specifically to a bottle mouth cooling and heat insulation structure for blow molding molds. Background Technology

[0002] In modern daily life, the use of plastic bottles has become commonplace. The production of plastic bottles requires maintaining the plasticity and extensibility of the preform, and the blow molding mold needs to be kept in a certain high-temperature environment so that the blow molding process can proceed smoothly, thereby ensuring the quality of the bottle molding.

[0003] In the prior art, the utility model with announcement number CN205685718U discloses a bottle mouth cooling structure for a blow molding die. The blow molding die includes an upper mold with a clamping part above the bottle mouth support ring and a lower mold with a cavity part below the bottle mouth support ring. A heat insulation pad is provided between the upper mold with the clamping part and the lower mold with the cavity part. The heat insulation pad has a round hole in the middle that matches the bottle mouth support ring.

[0004] The aforementioned blow molding bottle mouth cooling structure adds a heat insulation pad between the upper mold of the clamping part and the lower mold of the cavity part. During the process of heating the lower mold of the cavity part to a mold temperature of 120°C, it effectively avoids the possibility of the upper mold of the clamping part overheating and burning the bottle support ring due to heat transfer. However, in the above technology, the heat insulation pad of the device cannot effectively isolate high temperature and cannot cool and fix the bottle mouth, which can easily lead to deformation of the bottle mouth during high-temperature blow molding of the preform, causing the bottle body to break.

[0005] In summary, we have provided a bottle neck cooling and insulation structure for blow molding dies. Utility Model Content

[0006] The purpose of this invention is to provide a bottle mouth cooling and heat insulation structure for blow molding molds to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The bottle neck cooling and insulation structure of the blow molding die includes:

[0009] A fixing component for clamping and fixing the bottle neck and a cooling component for cooling the blow molding die, and a left half mold and a right half mold for mounting the fixing component and the cooling component.

[0010] The left and right half molds form a blow molding die. The top of the inner side of both the left and right half molds is provided with a semi-circular heat insulation limiting plate. The top of the left half mold is fixed with a left upper clamping opening by bolts, and the top of the right half mold is fixed with a right upper clamping opening by bolts.

[0011] Preferably, the fixing component includes a first clamping plate and a second clamping plate, and a first hydraulic cylinder and a second hydraulic cylinder are symmetrically arranged inside the upper left clamping opening. The output ends of the first hydraulic cylinder and the second hydraulic cylinder are both fixedly connected to the first clamping plate.

[0012] Preferably, a third hydraulic cylinder and a fourth hydraulic cylinder are symmetrically arranged inside the upper right clamping opening. The output ends of the third hydraulic cylinder and the fourth hydraulic cylinder are fixedly connected to the second clamping plate. Anti-slip grooves are provided on the inner sides of the first clamping plate and the second clamping plate.

[0013] Preferably, the cooling assembly includes a first cooling water pipe and a second cooling water pipe. The upper left clamp and the upper right clamp are both provided with a cooling chamber. The first cooling water pipe is installed inside the upper left clamp through the cooling chamber. The two ends of the first cooling water pipe are respectively fixedly connected to a first inlet pipe and a first outlet pipe. The first inlet pipe and the first outlet pipe are both installed at the top of the upper left clamp.

[0014] Preferably, a second cooling water pipe is installed in the upper right clamp through the internal cooling cavity. The two ends of the second cooling water pipe are respectively fixedly connected to a second inlet pipe and a second outlet pipe. Both the second inlet pipe and the second outlet pipe are installed at the top of the upper right clamp.

[0015] Preferably, the inner sides of both the upper left clamp and the upper right clamp are provided with through grooves.

[0016] The working principle and beneficial effects of this utility model are as follows:

[0017] This invention uses a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, and a fourth hydraulic cylinder to open. The first and second hydraulic cylinders push the first clamping plate, and the third and fourth hydraulic cylinders push the second clamping plate to clamp and fix the bottle mouth, thus preventing deformation and breakage at the contact point between the bottle mouth and the bottle body caused by movement during bottle blowing.

[0018] This invention injects coolant into the first and second cooling water pipes through the first and second water inlets. The first and second cooling water pipes cool the upper left and upper right clamps. The cool air is discharged to the bottle mouth through the channel to keep the bottle mouth warm and shape it, thus preventing the bottle mouth from deforming due to excessive temperature. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the left and right halves of the mold in this utility model;

[0021] Figure 3This is a schematic diagram of the internal structure of the left and right clamps in this utility model;

[0022] Figure 4 This is an exploded view of the left and right clamping openings in this utility model.

[0023] In the picture:

[0024] 1. Left half mold; 2. Right half mold; 3. Upper left clamping opening; 4. Upper right clamping opening; 5. Heat insulation limiting plate; 6. Bolt; 7. First water inlet pipe; 8. First water outlet pipe; 9. Second water inlet pipe; 10. Second water outlet pipe; 11. First hydraulic cylinder; 12. Second hydraulic cylinder; 13. Third hydraulic cylinder; 14. Fourth hydraulic cylinder; 15. First clamping plate; 16. Second clamping plate; 17. First cooling water pipe; 18. Second cooling water pipe; 19. Through groove; 20. Anti-slip groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-4 As shown, the bottle neck cooling and heat insulation structure of the blow molding die includes:

[0027] A fixing component for clamping and fixing the bottle neck and a cooling component for cooling the blow molding die, and a left half mold 1 and a right half mold 2 for mounting the fixing component and the cooling component;

[0028] The left half mold 1 and the right half mold 2 form a blow molding die. The top of the inner side of both the left half mold 1 and the right half mold 2 is provided with a semi-circular heat insulation limiting plate 5. The top of the left half mold 1 is fixed with the upper left clamping opening 3 by bolts 6, and the top of the right half mold 2 is fixed with the upper right clamping opening 4 by bolts 6.

[0029] like Figure 3 and Figure 4 As shown, the fixing assembly includes a first clamping plate 15 and a second clamping plate 16. A first hydraulic cylinder 11 and a second hydraulic cylinder 12 are symmetrically arranged inside the upper left clamping opening 3. The output ends of the first hydraulic cylinder 11 and the second hydraulic cylinder 12 are fixedly connected to the first clamping plate 15.

[0030] The upper right clamp 4 is symmetrically equipped with a third hydraulic cylinder 13 and a fourth hydraulic cylinder 14. The output ends of the third hydraulic cylinder 13 and the fourth hydraulic cylinder 14 are fixedly connected to the second clamping plate 16. The inner sides of the first clamping plate 15 and the second clamping plate 16 are provided with anti-slip grooves 20.

[0031] In this embodiment, by opening the first hydraulic cylinder 11, the second hydraulic cylinder 12, the third hydraulic cylinder 13, and the fourth hydraulic cylinder 14, the first hydraulic cylinder 11 and the second hydraulic cylinder 12 push the first clamping plate 15, and the third hydraulic cylinder 13 and the fourth hydraulic cylinder 14 push the second clamping plate 16 to clamp and fix the bottle mouth. The anti-slip grooves 20 on the inner side of the first clamping plate 15 and the second clamping plate 16 prevent the bottle mouth from moving, thus preventing deformation and breakage of the bottle body and the bottle mouth due to movement during the bottle blowing operation.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, the cooling assembly includes a first cooling water pipe 17 and a second cooling water pipe 18. The upper left clamp 3 and the upper right clamp 4 are both provided with a cooling chamber. The first cooling water pipe 17 is installed in the upper left clamp 3 through the cooling chamber. The two ends of the first cooling water pipe 17 are respectively fixedly connected to a first water inlet pipe 7 and a first water outlet pipe 8. The first water inlet pipe 7 and the first water outlet pipe 8 are both installed on the top of the upper left clamp 3.

[0033] The upper right clamp 4 is equipped with a second cooling water pipe 18 through the internal cooling chamber. The two ends of the second cooling water pipe 18 are respectively fixedly connected to a second water inlet pipe 9 and a second water outlet pipe 10. The second water inlet pipe 9 and the second water outlet pipe 10 are both installed on the top of the upper right clamp 4.

[0034] Both the upper left clamp 3 and the upper right clamp 4 have through grooves 19 on their inner sides.

[0035] In this embodiment, coolant is injected through the first water inlet pipe 7 and the second water inlet pipe 9, and the upper left clamp 3 and the upper right clamp 4 are cooled through the first cooling water pipe 17 and the second cooling water pipe 18. The cold air is discharged through the channel 19 to cool the bottle mouth, effectively preventing the bottle mouth from deforming during the blow molding process and improving the molding quality of the bottle.

[0036] In summary, the working principle is as follows:

[0037] For the bottle mouth cooling and heat insulation structure of this type of blow molding mold, firstly, the upper left clamp 3 and the upper right clamp 4 are fixed to the top of the left half mold 1 and the top of the right half mold 2 respectively by bolts 6;

[0038] Secondly, the preform is placed on the heat insulation limiting plate 5 and fixed by the protrusions around the preform opening. The heat insulation limiting plate 5 isolates the heat inside the left half mold 1 and the right half mold 2, preventing high temperature from affecting the bottle opening and causing it to deform.

[0039] Then, by opening the first hydraulic cylinder 11, the second hydraulic cylinder 12, the third hydraulic cylinder 13 and the fourth hydraulic cylinder 14, the first hydraulic cylinder 11 and the second hydraulic cylinder 12 push the first clamping plate 15, and the third hydraulic cylinder 13 and the fourth hydraulic cylinder 14 push the second clamping plate 16 to clamp and fix the bottle mouth. The anti-slip grooves 20 on the inner side of the first clamping plate 15 and the second clamping plate 16 prevent the bottle mouth from moving.

[0040] Finally, coolant is injected through the first water inlet pipe 7 and the second water inlet pipe 9, and the upper left clamp 3 and the upper right clamp 4 are cooled through the first cooling water pipe 17 and the second cooling water pipe 18. The cold air is discharged through the channel 19 to cool the bottle mouth, effectively preventing the bottle mouth from deforming during the blow molding process and improving the molding quality of the bottle.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bottle mouth cooling and insulating structure of a bottle blowing mold, characterized by comprising: Include: The fixing assembly for clamping the bottle mouth and the cooling assembly for cooling the bottle blowing mold, and the left half mold (1) and the right half mold (2) for installing the fixing assembly and the cooling assembly; The left half mold (1) and the right half mold (2) constitute a bottle blowing mold, and the top of the inside of the left half mold (1) and the right half mold (2) is provided with a semicircular ring-shaped heat insulation limiting plate (5), the top of the left half mold (1) is fixed with a left upper clamp (3) through a bolt (6), and the top of the right half mold (2) is fixed with a right upper clamp (4) through a bolt (6).

2. The bottle mouth cooling and insulating structure of a bottle blowing mold according to claim 1, characterized by: The fixing assembly includes a first clamping plate (15) and a second clamping plate (16), the inside of the left upper clamp (3) is symmetrically provided with a first hydraulic oil cylinder (11) and a second hydraulic oil cylinder (12), and the output ends of the first hydraulic oil cylinder (11) and the second hydraulic oil cylinder (12) are fixedly connected with the first clamping plate (15).

3. The bottle mouth cooling and insulating structure of a bottle blowing mold according to claim 2, characterized by: The inside of the right upper clamp (4) is symmetrically provided with a third hydraulic oil cylinder (13) and a fourth hydraulic oil cylinder (14), the output ends of the third hydraulic oil cylinder (13) and the fourth hydraulic oil cylinder (14) are fixedly connected with the second clamping plate (16), and the inside of the first clamping plate (15) and the second clamping plate (16) is provided with an anti-skid groove (20).

4. The bottle mouth cooling and insulating structure of a bottle blowing mold according to claim 1, characterized by: The cooling assembly includes a first cooling water pipe (17) and a second cooling water pipe (18), the inside of the left upper clamp (3) and the right upper clamp (4) is provided with a refrigeration cavity, the inside of the left upper clamp (3) is provided with the first cooling water pipe (17) through the refrigeration cavity, both ends of the first cooling water pipe (17) are fixedly connected with a first water inlet pipe (7) and a first water outlet pipe (8), and the first water inlet pipe (7) and the first water outlet pipe (8) are installed on the top of the left upper clamp (3).

5. The bottle mouth cooling and insulating structure of a bottle blowing mold according to claim 4, characterized by: The right upper clamp (4) is provided with the second cooling water pipe (18) through the refrigeration cavity inside, both ends of the second cooling water pipe (18) are fixedly connected with a second water inlet pipe (9) and a second water outlet pipe (10), and the second water inlet pipe (9) and the second water outlet pipe (10) are installed on the top of the right upper clamp (4).

6. The bottle mouth cooling and insulating structure of a bottle blowing mold according to claim 1, characterized by: The inside of the left upper clamp (3) and the right upper clamp (4) is provided with a through groove (19).

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