Bottle cap injection mold

Abstract

The utility model discloses a bottle cap injection mold which comprises a lower mold base and an upper mold base, the upper mold base and the lower mold base are opened and closed through a liftable air cylinder, a mold cavity is formed in the top of the lower mold base, and a mold head is arranged at the bottom of the upper mold base. A material pipe used for pouring mold materials into the mold cavity is installed in the middle of the upper mold base. The utility model relates to the technical field of injection molds, and the bottle cap injection mold is provided with a multi-directional three-dimensional cooling structure, so that compared with a traditional cooling structure, the three-dimensional cooling structure is larger in cooling contact area and more sufficient in contact with a formed bottle cap, and the cooling effect is better. According to the cooling range, the inner wall and the outer wall of the bottle cap, the cap body and the cap wall part can make contact with a cold source, so that the purpose of rapid and sufficient cooling is achieved, and the phenomenon that stress concentration is generated due to uneven cooling of the bottle cap is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a bottle cap injection mold. Background Art

[0002] An injection mold is a tool for producing plastic products; it is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and obtaining a molded product after cooling and solidification.

[0003] For example, Chinese patent number CN215849461 U discloses a demoulding mechanism for a bottle cap injection mold, which provides cooling water pipes on the upper and lower sides of the lower mold platform to absorb the heat generated during the molding process through cooling water, so that the bottle cap can be quickly cooled and demoulded.

[0004] The cooling structure of the above-mentioned mold has the disadvantage of uneven cooling. The cooling water pipes are only located on the upper and lower sides of the lower mold platform. That is to say, in the actual cooling process, only the outer wall of the bottle cap can be cooled quickly, but the inner wall of the bottle cap and the bottle cap body cannot be fully cooled. This insufficient cooling method will directly affect the quality of the bottle cap, for example, there may be a phenomenon of stress concentration on the bottle cap. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a bottle cap injection mold, which solves the problem of insufficient cooling of the prior bottle cap injection mold.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bottle cap injection mold, comprising a lower mold base and an upper mold base, the upper mold base and the lower mold base are opened and closed by a liftable cylinder, a mold cavity is provided at the top of the lower mold base, and a mold head is provided at the bottom of the upper mold base.

[0009] A material pipe for pouring mold material into the mold cavity is installed in the middle of the upper mold base.

[0010] A demoulding push plate that can be raised and lowered is arranged in the mold cavity. The demoulding push plate has a hollow structure. A push rod and a hollow tube are arranged at the bottom of the demoulding push plate. A groove body is opened downward at the bottom of the mold cavity. A spring is arranged in the groove body. The push rod is connected to the spring. A hose is connected to the end of the hollow tube, and the hose is connected to an external first pump machine.

[0011] The inner wall of the lower mold base is provided with first cooling chambers on both the left and right sides close to the mold cavity. The upper and lower ends of the first cooling chamber are connected to the outside through a water inlet pipe and a water outlet pipe respectively.

[0012] A cooling component is also arranged in the upper die seat.

[0013] As a further preference, there are two groups of hollow tubes and they are hard pipes, one group of hollow tubes is the water inlet pipes, and the other group of hollow tubes is the water outlet pipes.

[0014] As a further preference, the water inlet pipe is connected to an external first pump through a hose, and the water outlet pipe discharges hot water directly to the outside through the hose.

[0015] As a further preferred embodiment, the cooling assembly includes a second cooling chamber arranged on the inner wall of the die head, and a second pump and a water injection port are respectively provided on the top of the upper die base, the water outlet of the second pump is connected to the water inlet of the second cooling chamber, and the water injection port is connected to the water outlet of the second cooling chamber.

[0016] (III) Beneficial effects

[0017] The utility model provides a bottle cap injection mold, which has the following beneficial effects:

[0018] The bottle cap injection mold is provided with a multi-directional three-dimensional cooling structure. Compared with the traditional cooling structure, the three-dimensional cooling structure has a larger cooling contact surface and is in more complete contact with the formed bottle cap. The cooling range includes the inner and outer walls of the bottle cap, the cap body and the cap wall part, which can all contact the cold source, thereby achieving the purpose of rapid and sufficient cooling and preventing the bottle cap from generating stress concentration due to uneven cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] In the figure: 1. lower die base; 2. upper die base; 3. cylinder; 4. die cavity; 5. die head; 6. material pipe; 7. demoulding push plate; 8. push rod; 9. trough body; 10. spring; 11. hollow tube; 12. hose; 13. first pump; 14. first cooling chamber; 15. water inlet pipe; 16. water outlet pipe; 17. second cooling chamber; 18. water injection port; 19. second pump. DETAILED DESCRIPTION

[0021] 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 in 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.

[0022] like Figure 1 As shown, the utility model provides a technical solution: a bottle cap injection mold, including a lower mold base 1 and an upper mold base 2, the upper mold base 2 and the lower mold base 1 are opened and closed by a liftable cylinder 3, a mold cavity 4 is provided at the top of the lower mold base 1, and a mold head 5 is provided at the bottom of the upper mold base 2.

[0023] A material pipe 6 for pouring mold material into the mold cavity 4 is installed in the middle of the upper mold base 2. The material pipe 6 is spaced a certain distance from the second cooling cavity 17 to prevent the mold material from cooling down before reaching the mold cavity 4, thereby affecting its fluidity.

[0024] A demoulding push plate 7 that can be raised and lowered is arranged in the mold cavity 4. The demoulding push plate 7 is a hollow structure. A push rod 8 and a hollow tube 11 are arranged at the bottom of the demoulding push plate 7. There are two groups of hollow tubes 11, which are hard tubes. Since the demoulding push plate 7 will be subjected to the pressure of the die head 5 when the mold is closed, a hard hollow tube 11 is used for this purpose, which can go straight up and down. If a hose is used, it may be stacked during the lifting process and easily crushed. One group of hollow tubes 11 is a water inlet pipe, and the other group of hollow tubes 11 is a water outlet pipe. The water inlet pipe is connected to an external first pump 13 through a hose 12, and the water outlet pipe discharges hot water directly to the outside through the hose 12 (the water outlet has a switch valve).

[0025] A groove body 9 is opened downward at the bottom of the mold cavity 4 , a spring 10 is arranged in the groove body 9 , the push rod 8 is connected to the spring 10 , a hose 12 is connected to the end of the hollow tube 11 , and the hose 12 is connected to an external first pump 13 .

[0026] The inner wall of the lower mold base 1 is provided with first cooling chambers 14 on both sides near the mold cavity 4. The upper and lower ends of the first cooling chamber 14 are connected to the outside through a water inlet pipe 15 and a water outlet pipe 16 respectively (both the inlet and outlet are provided with switch valves).

[0027] A cooling assembly is also provided in the upper mold base 2, and the cooling assembly includes a second cooling chamber 17 arranged on the inner wall of the die head 5. A second pump 19 and a water injection port 18 are respectively provided on the top of the upper mold base 2. The water outlet of the second pump 19 is connected to the water inlet of the second cooling chamber 17, and the water injection port 18 is connected to the water outlet of the second cooling chamber 17.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field.

[0029] When in use, first pour the mold material into the mold cavity 4 through the material pipe 6, then add coolant to the demoulding push plate 7, the first cooling cavity 14 and the second cooling cavity 17 respectively, turn on the first pump 13, and add coolant to the demoulding push plate 7 through the hose 12 and the hollow tube 11.

[0030] Coolant is added into the first cooling chamber 14 through the water inlet pipe 15 , and similarly, coolant is added into the second cooling chamber 17 through the water injection port 18 .

[0031] The coolant in the demoulding push plate 7 can cool the outer wall of the bottle cap, the coolant in the first cooling cavity 14 can cool the outer side of the bottle cap, and the coolant in the second cooling cavity 17 can cool the entire inner wall of the bottle cap, thereby achieving the purpose of all-round cooling of all parts of the entire bottle cap.

[0032] Then, the cylinder 3 is turned on to drive the upper die seat 2 to rise, thereby driving the die head 5 to separate from the die cavity 4, and then the demoulding push plate 7 automatically pops open under the deformation action of the spring 10, thereby pushing the formed bottle cap out of the die cavity 4.

[0033] It should be noted that, for the above-mentioned treatment method of the coolant after absorbing heat, for example, the coolant in the demoulding push plate 7 can be directly discharged through the water outlet pipe, the coolant in the first cooling chamber 14 is discharged through the water outlet pipe 16, and the coolant in the second cooling chamber 17 is pumped out through the second pump 19.

[0034] To sum up, the bottle cap injection mold is provided with a multi-directional three-dimensional cooling structure. Compared with the traditional cooling structure, the three-dimensional cooling structure has a larger cooling contact surface and is in more complete contact with the molded bottle cap. The cooling range includes the inner and outer walls of the bottle cap, the cap body and the cap wall part, which can all contact the cold source, thereby achieving the purpose of rapid and sufficient cooling and preventing the bottle cap from generating stress concentration due to uneven cooling.

[0035] It should be noted that the electrical components appearing in this article are all connected to the external main controller and 220V or 380V mains electricity, and the main controller can be a conventional known device for controlling computers, etc. Its control principle, internal structure and control switch mode are all conventional means of the prior art, which are directly quoted here without further elaboration. In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bottle cap injection mold, characterized in that: The invention comprises a lower die base (1) and an upper die base (2), wherein the upper die base (2) and the lower die base (1) are opened and closed by a liftable cylinder (3), a die cavity (4) is provided at the top of the lower die base (1), and a die head (5) is provided at the bottom of the upper die base (2); A material pipe (6) for pouring mold material into the mold cavity (4) is installed in the middle of the upper mold base (2); A demoulding push plate (7) that can be raised and lowered is arranged in the mold cavity (4). The demoulding push plate (7) is a hollow structure. A push rod (8) and a hollow tube (11) are arranged at the bottom of the demoulding push plate (7). A groove body (9) is opened downward at the bottom of the mold cavity (4). A spring (10) is arranged in the groove body (9). The push rod (8) is connected to the spring (10). A hose (12) is connected to the end of the hollow tube (11). The hose (12) is connected to an external first pump (13). The inner wall of the lower mold base (1) is provided with a first cooling cavity (14) on both the left and right sides close to the mold cavity (4), and the upper and lower ends of the first cooling cavity (14) are connected to the outside through a water inlet pipe (15) and a water outlet pipe (16) respectively; A cooling component is also arranged in the upper die seat (2).

2. The bottle cap injection mold according to claim 1, characterized in that: There are two groups of hollow tubes (11) and they are made of hard pipes, one group of hollow tubes (11) is a water inlet pipe, and the other group of hollow tubes (11) is a water outlet pipe.

3. The bottle cap injection mold according to claim 2, characterized in that: The water inlet pipe is connected to an external first pump (13) via a hose (12), and the water outlet pipe discharges hot water directly to the outside via the hose (12).

4. The bottle cap injection mold according to claim 1, characterized in that: The cooling assembly comprises a second cooling chamber (17) arranged on the inner wall of the die head (5), and a second pump (19) and a water injection port (18) are respectively arranged on the top of the upper die base (2), the water outlet of the second pump (19) is connected to the water inlet of the second cooling chamber (17), and the water injection port (18) is connected to the water outlet of the second cooling chamber (17).

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