Bottle preform structure capable of preventing plastic accumulation

Abstract

The utility model discloses a bottle preform structure capable of preventing plastic accumulation, which comprises a base, an air cylinder mounted at the upper end of the base, an upper die mounted at the output end of the air cylinder, a lower die mounted on the inner wall of the bottom end of the base, a cooling fan arranged on one side of the upper end of the base, and a combined cooling structure arranged inside the lower die. The combined cooling structure comprises a combined pipe, four air outlets are fixedly formed in the upper end of the combined pipe, an air inlet is formed in the lower end of the upper mold, a ventilation groove is formed in one side of the air inlet, the upper ends of the air outlets enter the air inlet, and an air outlet pipe of the cooling fan enters the combined pipe. According to the bottle preform structure capable of preventing the plastic from being stacked, the upper mold and the lower mold can be cooled through one set of cooling fans, bottle preform forming is better guaranteed, and the plastic cannot be stacked.

Description

Technical Field

[0001] The utility model relates to the field of bottle embryo production, in particular to a bottle embryo structure for preventing plastic accumulation. Background Art

[0002] In the preform production process, a stamping die is needed to extrude the preform raw materials first. After the extruded preform is injection molded, the mold will be cooled to solidify the preform. Usually, water circulation or other cooling systems will be used in the mold to reduce the temperature and speed up the cooling speed.

[0003] Existing mold cooling can only be done by a separate cooling fan to cool down a single mold. The cooling of two sets of molds can ensure that the formed preforms are better formed without accumulation or adhesion. The combination of two sets of molds and two sets of cooling fans is a waste of resources and has a high cooling cost. Utility Model Content

[0004] The main purpose of the utility model is to provide a bottle embryo structure that prevents plastic accumulation, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A preform structure for preventing plastic accumulation comprises a base, a cylinder is installed at the upper end of the base, an upper mold is installed at the output end of the cylinder, a lower mold is installed on the inner wall of the bottom end of the base, a cooling fan is arranged on one side of the upper end of the base, a combined cooling structure is arranged inside the lower mold, the combined cooling structure comprises a combined pipe, four air outlets are fixedly arranged on the upper end of the combined pipe, an air inlet is opened at the lower end of the upper mold, a ventilation slot is opened on one side of the air inlet, the upper end of the air outlet enters into the interior of the air inlet, and the air outlet pipe of the cooling fan enters into the interior of the combined pipe.

[0007] As a further solution of the utility model, the inner wall of the air outlet is provided with a sealing structure, the sealing structure includes a fixed tube, the outer wall of the fixed tube is fixedly connected to the inner wall of the air outlet, and the outer wall of the fixed tube is provided with a sealing ring.

[0008] As a further solution of the utility model, a threaded tube is provided on the outer wall of one side of the front end of the combined tube, and the threaded tube leads to the front end thread of the lower mold and is installed with a threaded cap.

[0009] As a further solution of the utility model, an air outlet is provided on one side of the ventilation slot.

[0010] As a further solution of the utility model, two stabilizing rods are fixedly provided on both sides of the upper end of the lower mold, and the upper ends of the stabilizing rods are located inside the upper mold and move.

[0011] As a further solution of the utility model, an air outlet is provided on one side of the ventilation slot.

[0012] The beneficial effects of the utility model are as follows:

[0013] By setting up a combined cooling structure, when the upper mold moves down to extrude the preform, a single combined tube can cool the upper mold and the lower mold at the same time, speeding up the cooling of the mold on the outer wall of the preform, preventing the outer surface of the preform from accumulating and adhering to the mold, and saving costs at the same time;

[0014] By setting up a sealing structure, when the combination pipe is combined with the upper mold, the sealing between the combinations can be ensured, so that the cooling air source is accurately transmitted to the upper mold, avoiding gas leakage when the cooling air source is connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a bottle embryo structure for preventing plastic accumulation according to the utility model;

[0016] Figure 2 This is a cross-sectional view of an upper mold of a bottle embryo structure for preventing plastic accumulation according to the utility model;

[0017] Figure 3 This is a combined tube structure diagram of a bottle embryo structure for preventing plastic accumulation in the utility model;

[0018] Figure 4 The utility model is a lower mold structure diagram of a bottle embryo structure for preventing plastic accumulation.

[0019] In the figure: 1. base; 2. cylinder; 3. upper mold; 4. lower mold; 5. cooling fan; 6. combined cooling structure; 7. combined pipe; 8. air inlet; 9. ventilation slot; 10. air outlet; 11. sealing structure; 12. fixing pipe; 13. sealing ring; 14. threaded pipe; 15. threaded cap. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-4As shown, a preform structure for preventing plastic accumulation comprises a base 1, a cylinder 2 is installed at the upper end of the base 1, an upper mold 3 is installed at the output end of the cylinder 2, a lower mold 4 is installed on the inner wall of the bottom end of the base 1, a cooling fan 5 is arranged on one side of the upper end of the base 1, a combined cooling structure 6 is arranged inside the lower mold 4, the combined cooling structure 6 comprises a combined pipe 7, four air outlets are fixedly arranged at the upper end of the combined pipe 7, an air inlet 8 is opened at the lower end of the upper mold 3, a ventilation slot 9 is opened on one side of the air inlet 8, the upper end of the air outlet enters into the air inlet 8, and the air outlet pipe of the cooling fan 5 enters into the combined pipe 7.

[0022] In this embodiment, a sealing structure 11 is provided on the inner wall of the air outlet. The sealing structure 11 includes a fixed tube 12 . The outer wall of the fixed tube 12 is fixedly connected to the inner wall of the air outlet. A sealing ring 13 is provided on the outer wall of the fixed tube 12 .

[0023] The fixed tube 12 is used to install the sealing ring 13. The fixed tube 12 is used to set the sealing ring 13. The sealing ring 13 ensures better sealing between the upper end of the combined tube 7 and the upper mold 3.

[0024] In this embodiment, a threaded tube 14 is provided on the outer wall of one side of the front end of the combined tube 7 , and the threaded tube 14 leads to the front end of the lower mold 4 and is threadedly mounted with a threaded cap 15 .

[0025] In this embodiment, an air outlet 10 is formed on one side of the ventilation slot 9 .

[0026] The air outlet 10 is used to facilitate the discharge of the gas inside the ventilation slot 9 to achieve the purpose of ventilation and cooling.

[0027] In this embodiment, two stabilizing rods are fixedly provided on both sides of the upper end of the lower mold 4 , and the upper ends of the stabilizing rods are located inside the upper mold 3 and move.

[0028] The stabilizing rod facilitates the stability of the upper mold 3 when it moves downward.

[0029] In this embodiment, an air outlet 10 is provided on one side of the ventilation slot 9 .

[0030] It should be noted that the utility model is a preform structure for preventing plastic from accumulating. When the plastic is injected into the preform, the cylinder 2 is started, so that the upper mold 3 is squeezed onto the lower mold 4, so that the preform is extruded. After extrusion molding, the cooling fan 5 is started, so that the wind source enters the inside of the combined pipe 7. Since the upper mold 3 is connected to the lower mold 4, the wind source is discharged into the inside of the air inlet 8 through the fixed pipe 12, so that a group of cooling fans 5 cools the two molds, and prevents the preform inside the mold from adhering and accumulating in the mold.

[0031] When the upper mold 3 and the lower mold 4 move downward, the fixed tube 12 enters into the air inlet 8, and the outer wall of the sealing ring 13 fits with the inner wall of the air inlet 8 to ensure the sealing of the connection and avoid leakage of the air source entering the ventilation groove 9. The cooling air source cools the inner wall of the upper mold 3, and the hot gas is discharged from the air outlet 10, thereby realizing simultaneous cooling of the upper mold 3 and the lower mold 4.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A preform structure for preventing plastic accumulation, comprising a base (1), a cylinder (2) being mounted on the upper end of the base (1), an upper mold (3) being mounted on the output end of the cylinder (2), a lower mold (4) being mounted on the inner wall of the bottom end of the base (1), and a cooling fan (5) being disposed on one side of the upper end of the base (1), characterized in that: A combined cooling structure (6) is arranged inside the lower mold (4), and the combined cooling structure (6) includes a combined pipe (7), and four air outlets are fixedly arranged at the upper end of the combined pipe (7). An air inlet (8) is provided at the lower end of the upper mold (3), and a ventilation groove (9) is provided on one side of the air inlet (8). The upper end of the air outlet enters the interior of the air inlet (8), and the air outlet pipe of the cooling fan (5) enters the interior of the combined pipe (7).

2. A preform structure for preventing plastic accumulation according to claim 1, characterized in that: The inner wall of the air outlet is provided with a sealing structure (11), the sealing structure (11) comprises a fixed tube (12), the outer wall of the fixed tube (12) is fixedly connected to the inner wall of the air outlet, and the outer wall of the fixed tube (12) is provided with a sealing ring (13).

3. The preform structure for preventing plastic accumulation according to claim 1, characterized in that: A threaded tube (14) is provided on the outer wall of one side of the front end of the combined tube (7), and the threaded tube (14) is connected to the front end of the lower mold (4) and a threaded cap (15) is installed on the thread.

4. The preform structure for preventing plastic accumulation according to claim 1, characterized in that: An air outlet hole (10) is provided on one side of the ventilation slot (9).

5. The preform structure for preventing plastic accumulation according to claim 1, characterized in that: Two stabilizing rods are fixedly arranged on both sides of the upper end of the lower mold (4), and the upper ends of the stabilizing rods are movably located inside the upper mold (3).

6. The preform structure for preventing plastic accumulation according to claim 1, characterized in that: An air outlet (10) is provided on one side of the ventilation slot (9).

Images