Ton barrel production blow mold

Abstract

The utility model discloses ton barrel production blow mould, including plastic particle melting mechanism, plastic embryo extrusion mechanism, replaceable mould cavity unit and blow moulding mechanism. Plastic particle melting mechanism is transported to embryo extrusion mechanism through spiral feeding stem with the molten plastic, and the embryo is cut off and falls into the upper and lower barrel body mould cavity, and blow moulding is completed through the cooperation of blow moulding mechanism by the rotation disc movement, and then the finishing and stripping of the finished product are completed through the turn after the selvedge finishing mechanism and stripping mechanism. Cooling water channel is equipped in the mould cavity to accelerate the cooling speed, and the upper and lower barrel body mould cavities realize locking through the wedge block drive of hydraulic cylinder. The device realizes the continuous, efficient blow moulding of ton barrel barrel body structure.

Description

Technical Field

[0001] This utility model relates to blow molding molds for producing ton barrels. Background Technology

[0002] Existing ton containers are mostly produced using injection molding or traditional single-mold blow molding, which results in low production efficiency, unstable molding quality, and complex mold replacement and maintenance, failing to meet the demands of large-scale, high-intensity industrial production. Furthermore, existing equipment often requires manual intervention in processes such as preform cutting, mold cavity cooling, blow molding, and demolding, leading to low levels of automation and operational safety risks.

[0003] Therefore, there is an urgent need for a blow molding die with a reasonable structure, high degree of automation, high molding efficiency, and suitable for the production of ton barrels. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a blow molding mold for ton barrel production.

[0005] The blow molding mold for producing ton containers includes a plastic granule melting mechanism, a plastic preform extrusion mechanism, a replaceable mold cavity unit, and a blow molding mechanism. The plastic granule melting mechanism includes a barrel with a heating device inside. The barrel is connected to the plastic preform extrusion mechanism via a spiral feed rod. The plastic preform extrusion mechanism includes a tubular outlet with a cylindrical mold core inside. The mold core is connected to a cooling mechanism. Molten plastic is extruded into a tubular plastic preform through the gap between the outlet and the mold core. The replaceable mold cavity unit includes an upper barrel cavity and a lower barrel cavity, with two upper and two lower barrel cavities spaced at four equal points on a turntable. The upper or lower barrel cavity first passes through the outlet, where a cutting device cuts the plastic preform. The preform falls into the cavity, and the turntable rotates 45°. The upper or lower barrel cavity then passes through the blow molding mechanism to blow mold the plastic preform into shape.

[0006] As a further improvement, a burr trimming mechanism is provided after the blow molding mechanism for trimming the burrs on the formed upper or lower barrel body. The burr trimming mechanism is located at the four equal division points of another turntable symmetrical to the plastic preform extrusion mechanism.

[0007] As a further improvement, a demolding mechanism is provided after the burr trimming mechanism to open the upper barrel cavity or the lower barrel cavity. The demolding mechanism is located at the four equal division points of another turntable symmetrical to the blow molding mechanism. After that, the upper barrel cavity or the lower barrel cavity rotates back to the bottom of the plastic preform extrusion mechanism to form a closed loop.

[0008] As a further improvement, the cavity walls of the upper and lower barrel cavities are provided with cooling water spiral channels for introducing cooling water to cool and demold the product.

[0009] As a further improvement, the upper barrel cavity and the lower barrel cavity are locked by a wedge block driven by a hydraulic cylinder.

[0010] Beneficial effects:

[0011] 1. Improve production efficiency: The turntable structure is used to arrange multiple mold cavities. During the rotation of the cavities, the preform receiving, blow molding, cooling, trimming and demolding are completed continuously, which greatly improves production efficiency.

[0012] 2. High degree of automation: From melting, extrusion, cutting, blow molding, cooling, trimming to demolding, the entire process is fully automated, reducing human intervention and improving production safety and consistency.

[0013] 3. Stable product quality: Cooling water channels are provided in the upper and lower barrel cavities to ensure temperature control during the blow molding process and improve the dimensional accuracy and molding quality of the finished product.

[0014] 4. Easy mold replacement: The mold cavity unit is replaceable, which can adapt to the production needs of ton barrels with different structural specifications, enhancing the adaptability and economy of the equipment.

[0015] 5. Reliable locking structure: The wedge block locking method driven by hydraulic cylinder ensures that the mold cavity is firmly closed and accurately aligned, avoiding material leakage or misalignment during blow molding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the blow molding mold for producing ton containers;

[0017] Figure 2 yes Figure 1 The front view;

[0018] Figure 3 yes Figure 1 Side view;

[0019] Figure 4 This is a schematic diagram of the internal structure of the discharge port;

[0020] 1. Plastic granule melting mechanism 11. Barrel 12. Screw feeder 2. Plastic preform extrusion mechanism 21. Discharge port 22. Mold core 3. Replaceable mold cavity unit 31. Upper barrel cavity 32. Lower barrel cavity 33. Turntable 4. Blow molding mechanism 5. Cutting device 6. Deburring mechanism 7. Demolding mechanism Detailed Implementation

[0021] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0022] like Figures 1-4 As shown, the blow molding mold for producing ton barrels includes a plastic granule melting mechanism 1, a material cylinder 11, a spiral feeding rod 12, a plastic preform extrusion mechanism 2, a discharge port 21, a mold core 22, a replaceable mold cavity unit 3, an upper barrel cavity 31, a lower barrel cavity 32, a turntable 33, a blow molding mechanism 4, a cutting device 5, a burr trimming mechanism 6, and a demolding mechanism 7.

[0023] The blow molding die for producing ton containers described in this utility model mainly includes the following parts:

[0024] Plastic granule melting mechanism 1: It is equipped with a material cylinder 11 and a heating device. The plastic granules are heated and melted in the material cylinder 11 and then conveyed to the preform extrusion mechanism through the screw feeder 12.

[0025] Plastic preform extrusion mechanism 2: includes a tubular discharge port 21 and a cylindrical die core 22. A cooling mechanism is connected inside the die core 22 to ensure discharge stability. Molten plastic forms an annular gap between the discharge port 21 and the die core 22 and is extruded into a tubular preform.

[0026] The interchangeable mold cavity unit 3 includes two upper barrel cavities 31 and two lower barrel cavities 32, which are distributed at four equal points on the same turntable 33. The mold cavities alternately pass through the discharge port 21, the blow molding mechanism 4, the burr trimming mechanism 6, and the demolding mechanism 7 to form a production closed loop.

[0027] Preform cutting and dropping into the cavity: After extrusion, the plastic preform is cut by the cutting device 5 and falls freely into the cavity below it. The cutting device 5 operates synchronously to ensure that the preform length is uniform.

[0028] Blow molding mechanism 4: Located at the corresponding position on the cavity running trajectory on turntable 33, it inflates the preform with air pressure to fit against the inner wall of the mold cavity, forming a barrel structure.

[0029] Edge trimming mechanism 6: Used to remove excess material from the outer edge of the upper / lower barrel after blow molding, ensuring the appearance and dimensions of the finished product.

[0030] Demolding mechanism 7: After the mold cavity is blown and cooled, the mold is opened at the demolding mechanism 7, the molded barrel is ejected, and the mold cavity then returns to the initial position to wait for the next round of feeding.

[0031] Cooling structure: The mold cavity is equipped with a spiral cooling water channel, which introduces cooling water to accelerate the cooling process of the preform and improve the production cycle.

[0032] Mold cavity locking structure: The mold cavity is quickly locked and released by a wedge block driven by a hydraulic cylinder, ensuring the reliability and airtightness of the mold cavity during blow molding and demolding.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blow molding die for producing ton containers, characterized in that, The system includes a plastic granule melting mechanism, a plastic preform extrusion mechanism, a replaceable mold cavity unit, and a blow molding mechanism. The plastic granule melting mechanism includes a barrel with a heating device inside. The barrel is connected to the plastic preform extrusion mechanism via a spiral feed rod. The plastic preform extrusion mechanism includes a tubular outlet with a cylindrical mold core inside. The mold core is connected to a cooling mechanism. Molten plastic is extruded into a tubular plastic preform through the gap between the outlet and the mold core. The replaceable mold cavity unit includes an upper barrel cavity and a lower barrel cavity, with two upper and two lower barrel cavities spaced at four equal points on a turntable. The upper or lower barrel cavity first passes through the outlet, where a cutting device cuts the plastic preform. The preform falls into the cavity, and the turntable rotates 45°. The upper or lower barrel cavity then passes through the blow molding mechanism to blow mold the plastic preform into shape.

2. The blow molding die for producing ton containers according to claim 1, characterized in that, A burr trimming mechanism is provided after the blow molding mechanism to trim the burrs on the formed upper or lower barrel body. The burr trimming mechanism is located at the four equal division points of another turntable symmetrical to the plastic preform extrusion mechanism.

3. The blow molding die for producing ton containers according to claim 2, characterized in that, The aforementioned burr trimming mechanism is followed by a demolding mechanism that opens the upper or lower barrel cavity. The demolding mechanism is located at the four equal division points of another turntable symmetrical to the blow molding mechanism. Afterward, the upper or lower barrel cavity rotates back to the bottom of the plastic preform extrusion mechanism to form a closed loop.

4. The blow molding die for producing ton containers according to claim 1, characterized in that, The upper and lower barrel cavities are provided with cooling water spiral channels in their cavity walls for introducing cooling water to cool and demold the product.

5. The blow molding die for producing ton containers according to claim 1, characterized in that, The upper and lower barrel cavities are locked together by a wedge block driven by a hydraulic cylinder.

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