Navigation buoy integrated forming process

Abstract

The invention provides an integrated forming process for a navigation buoy, and relates to the field of household kitchens. The peculiar smell removing equipment for sewage treatment comprises the following steps: raw material pretreatment: pretreating a modified polyethylene material; molds are designed and heated, specifically, the molds of the buoyancy body and the navigation visual target body are placed on a rotating base plate in a hot oven, a hanging pipe frame is fixed to the middle of the molds, and the molds and the hanging pipe frame are preheated through the hot oven; raw material injection: the pretreated modified polyethylene material is injected into a preheated mold, the raw material starts to be heated and softened in the mold, and the raw material rotates in a hot oven through a rotating chassis mold; and molding and cooling. By using the hot oven mold rotating process, the size precision and appearance quality of the product are improved, in addition, the internal stress of the product is reduced through the uniform heating and cooling process, and the mechanical performance and durability of the navigation buoy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of home kitchens, and in particular to an integrated molding process for a navigation buoy. Background Art

[0002] Marine meteorological observations include air pressure, temperature, humidity, wind speed, etc. These environmental conditions and natural phenomena are important elements that characterize the marine environment. Therefore, real-time measurement of ocean hydrology is very important for ships entering the port, so ocean buoys have been widely used.

[0003] Navigation buoys generally use split buoys, but the existing split buoys have the following problems:

[0004] 1. It takes a lot of manpower and material resources to place buoys and lift and salvage the buoys.

[0005] 2. It is unsafe for ship personnel to carry out the deployment and recovery operations of navigation buoys;

[0006] 3. When the buoy is split, its components are easily damaged. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the present invention provides an integrated molding process for a navigation buoy, which solves the problems of the inconvenience of launching and recovering the prior navigation buoy and the easy damage.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a navigation buoy integral molding process, comprising the following steps:

[0011] Step 1: Pretreatment of raw materials: Pretreatment of the modified polyethylene material to ensure that it has good fluidity and formability before entering the mold;

[0012] Step 2: Mold design and heating: Place the molds of the buoyancy body and the navigation visual mark on the rotating chassis in the hot oven, and fix the hanging pipe rack in the middle of the mold. Preheat the mold and the hanging pipe rack through the hot oven, and make the mold and the hanging pipe rack reach the set temperature to ensure that the raw materials can quickly start the molding process after entering the mold;

[0013] Step 3: Injection of raw materials: Inject the pretreated modified polyethylene material into the preheated mold. The raw material begins to soften due to heat in the mold and rotates in the hot oven through the rotating chassis mold. The rotational motion evenly distributes the raw materials in the mold to avoid material accumulation or uneven distribution due to factors such as gravity, ensuring that the wall thickness of each part of the product is uniform.

[0014] Step 4: Molding and cooling: During the rotation of the mold, the raw materials continue to be heated and gradually formed. When the product molding meets the predetermined requirements, the heating is stopped, the mold and the buoy are separated, and the product is naturally cooled in the hot oven to complete the molding process.

[0015] Preferably, the pretreatment of the modified polyethylene material includes surface cleaning and vacuum drying, and the surface cleaning includes two steps of physical cleaning and chemical cleaning.

[0016] Preferably, the physical cleaning is to wipe the surface of the material with a soft brush to remove attached dust and particles, and the chemical cleaning is to soak the material in a detergent solution for a period of 10-30 minutes, depending on the degree of stains, and then rinse with clean water to remove residual detergent.

[0017] Preferably, the vacuum drying is to place the material in a vacuum drying oven and perform drying treatment at a pressure of 10-30 Pa, with the drying temperature set at 70° C.-90° C. and the drying time being 3-6 hours.

[0018] Preferably, the preheating temperature of the mold is set to 180°C-220°C, the preheating time is set to 10-15 minutes, the molding temperature of the product is set to 140°C-160°C, the molding time is set to 3-5 minutes, the cooling temperature is set to 40°C-60°C, and the cooling time is set to 15-20 minutes.

[0019] Preferably, the rotation speed of the rotating chassis is set to 5-10 revolutions per minute.

[0020] Preferably, the components and weight proportions of the modified polyethylene material include 80-90 parts of high-density polyethylene, 10-20 parts of linear low-density polyethylene, 1-3 parts of talc, 0-1 parts of calcium carbonate, 1-4 parts of wollastonite, 0-2 parts of calcium stearate, 1-2 parts of ultraviolet absorber, and 1-2 parts of phenolic antioxidant.

[0021] Preferably, the processing method of the modified polyethylene material is to mix surface-activated high-density polyethylene and linear low-density polyethylene with talc-free powder, calcium carbonate, wollastonite, stearic acid, ultraviolet absorber and phenolic antioxidant, stir them evenly in a high-speed mixer to form a good interface bonding between the inorganic filler and the matrix material, then melt-blend the mixture through a twin-screw extruder, and finally cut the extruded material into particles.

[0022] (III) Beneficial effects

[0023] The present invention provides a navigation buoy integrated molding process, which has the following beneficial effects:

[0024] 1. This process completes the molding of the navigation buoy in a continuous process through the hot oven mold rotation process, which greatly shortens the production cycle and improves production efficiency. The rotation movement ensures the uniform distribution of the modified polyethylene material in the mold, makes the wall thickness of the product uniform, reduces the generation of defects such as bubbles and shrinkage holes, and improves the dimensional accuracy and appearance quality of the product. In addition, the uniform heating and cooling process also helps to reduce the internal stress of the product and improve the mechanical properties and durability of the navigation buoy.

[0025] 2. The navigation buoy is processed through an integrated process, which avoids the waste of manpower and material resources in the operation process of placing the buoy, lifting and salvaging the buoy, the unsafe operation of the ship personnel, and the easy damage of the components when the buoy is split. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a navigation buoy in the present invention;

[0027] Figure 2 It is a schematic diagram of the suspension pipe rack of the navigation buoy in the present invention.

[0028] Among them, 1. Buoyancy body; 2. Navigation visual marker; 3. Suspension pipe rack. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] An embodiment of the present invention provides a navigation buoy integral molding process, comprising the following steps:

[0032] Step 1: Pretreatment of raw materials: Pretreat the modified polyethylene material to ensure that it has good fluidity and formability before entering the mold. The pretreatment of the modified polyethylene material includes surface cleaning and vacuum drying. Surface cleaning has two steps: physical cleaning and chemical cleaning. Physical cleaning is to wipe the surface of the material with a soft brush to remove attached dust and particles. Chemical cleaning is to soak the material in a detergent solution. Depending on the degree of stains, the soaking time is generally 10-30 minutes, and then rinse with clean water to remove residual detergent. Vacuum drying is to place the material in a vacuum drying oven and dry it under a pressure of 20Pa. The drying temperature is set to 70℃-90℃ and the time is 3-6h.

[0033] Step 2: Mould design and heating: Place the moulds of the buoyancy body and the navigation visual mark body on the rotating chassis in the hot oven, and fix the hanging pipe rack in the middle of the mould so that the processed navigation buoy is as follows: Figure 1-2 As shown, the mold and the hanging tube rack are preheated by a hot oven, and the mold and the hanging tube rack are made to reach a set temperature to ensure that the raw materials can quickly start the molding process after entering the mold;

[0034] Step 3: Injection of raw materials: Inject the pretreated modified polyethylene material into the preheated mold. The raw material begins to soften due to heat in the mold and rotates in the hot oven through the rotating chassis mold. The rotational motion evenly distributes the raw materials in the mold to avoid material accumulation or uneven distribution due to factors such as gravity, ensuring that the wall thickness of each part of the product is uniform. The rotation speed of the rotating chassis is set to 6 revolutions per minute.

[0035] Step 4: Molding and cooling: During the rotation of the mold, the raw materials continue to be heated and gradually formed. When the product molding meets the predetermined requirements, the heating is stopped, the mold and the buoy are separated, and the product is naturally cooled in the hot oven to complete the molding process.

[0036] The preheating temperature of the mold is set to 200°C, the preheating time is set to 10 minutes, the molding temperature of the product is set to 150°C, the molding time is set to 4 minutes, the cooling temperature is set to 50°C, and the cooling time is set to 15 minutes.

[0037] The components and weight proportions of the modified polyethylene material include 80 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 2 parts of talc, 0.2 parts of calcium carbonate, 2 parts of wollastonite, 0.5 parts of calcium stearate, 1.5 parts of ultraviolet absorber, and 1 part of phenolic antioxidant.

[0038] The processing method of the modified polyethylene material is to mix surface-activated high-density polyethylene and linear low-density polyethylene with talc-free powder, calcium carbonate, wollastonite, stearic acid, ultraviolet absorber and phenolic antioxidant, stir them evenly in a high-speed mixer to form a good interface bonding between the inorganic filler and the matrix material, then melt-blend the mixture through a twin-screw extruder, and finally cut the extruded material into particles.

[0039] Embodiment 2:

[0040] An embodiment of the present invention provides a navigation buoy integral molding process, comprising the following steps:

[0041] Step 1: Pretreatment of raw materials: Pretreat the modified polyethylene material to ensure that it has good fluidity and formability before entering the mold. The pretreatment of the modified polyethylene material includes surface cleaning and vacuum drying. Surface cleaning has two steps: physical cleaning and chemical cleaning. Physical cleaning is to wipe the surface of the material with a soft brush to remove attached dust and particles. Chemical cleaning is to soak the material in a detergent solution. Depending on the degree of stains, the soaking time is generally 10-30 minutes, and then rinse with clean water to remove residual detergent. Vacuum drying is to place the material in a vacuum drying oven and dry it under a pressure of 10-30Pa. The drying temperature is set to 70℃-90℃ and the time is 3-6h.

[0042] Step 2: Mould design and heating: Place the moulds of the buoyancy body and the navigation visual mark body on the rotating chassis in the hot oven, and fix the hanging pipe rack in the middle of the mould so that the processed navigation buoy is as follows: Figure 1-2 As shown, the mold and the hanging tube rack are preheated by a hot oven, and the mold and the hanging tube rack are made to reach a set temperature to ensure that the raw materials can quickly start the molding process after entering the mold;

[0043] Step 3: Injection of raw materials: Inject the pretreated modified polyethylene material into the preheated mold. The raw material begins to soften due to heat in the mold and rotates in the hot oven through the rotating chassis mold. The rotational motion evenly distributes the raw materials in the mold to avoid material accumulation or uneven distribution due to factors such as gravity, ensuring that the wall thickness of each part of the product is uniform. The rotation speed of the rotating chassis is set to 10 revolutions per minute.

[0044] Step 4: Molding and cooling: During the rotation of the mold, the raw materials continue to be heated and gradually formed. When the product molding meets the predetermined requirements, the heating is stopped, the mold and the buoy are separated, and the product is naturally cooled in the hot oven to complete the molding process.

[0045] The preheating temperature of the mold is set to 180°C, the preheating time is set to 15 minutes, the molding temperature of the product is set to 160°C, the molding time is set to 5 minutes, the cooling temperature is set to 60°C, and the cooling time is set to 20 minutes.

[0046] The components and weight proportions of the modified polyethylene material include 90 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 3 parts of talc, 1 part of calcium carbonate, 4 parts of wollastonite, 2 parts of calcium stearate, 2 parts of ultraviolet absorber, and 2 parts of phenolic antioxidant.

[0047] The processing method of the modified polyethylene material is to mix surface-activated high-density polyethylene and linear low-density polyethylene with talc-free powder, calcium carbonate, wollastonite, stearic acid, ultraviolet absorber and phenolic antioxidant, stir them evenly in a high-speed mixer to form a good interface bonding between the inorganic filler and the matrix material, then melt-blend the mixture through a twin-screw extruder, and finally cut the extruded material into particles.

[0048] 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 navigation buoy integrated molding process, characterized in that: The following steps are involved: Step 1: Pretreatment of raw materials: pretreatment of modified polyethylene materials; Step 2: Mould design and heating: Place the moulds of the buoyancy body and the navigation visual mark on the rotating chassis in the hot oven, and fix the hanging pipe rack in the middle of the mould. Preheat the mould and the hanging pipe rack in the hot oven and make them reach the set temperature. Step 3: Injection of raw materials: Inject the pretreated modified polyethylene material into the preheated mold. The raw materials begin to soften due to heat in the mold and rotate in the hot oven through the rotating chassis mold. Step 4: Molding and cooling: During the rotation of the mold, the raw materials continue to be heated and gradually formed. When the product molding meets the predetermined requirements, the heating is stopped, the mold and the buoy are separated, and the product is naturally cooled in the hot oven to complete the molding process.

2. The one-piece forming process of a navigation buoy according to claim 1, characterized in that: The pretreatment of the modified polyethylene material includes surface cleaning and vacuum drying, and the surface cleaning includes two steps of physical cleaning and chemical cleaning.

3. The one-piece forming process of a navigation buoy according to claim 2, characterized in that: The physical cleaning is to wipe the surface of the material with a soft brush to remove attached dust and particles, and the chemical cleaning is to soak the material in a detergent solution. Depending on the degree of stains, the soaking time is generally 10-30 minutes, and then rinse with clean water to remove residual detergent.

4. The one-piece forming process of a navigation buoy according to claim 2, characterized in that: The vacuum drying is to place the material in a vacuum drying oven and perform drying treatment under a pressure of 10-30 Pa, with the drying temperature set to 70° C.-90° C. and the drying time being 3-6 hours.

5. The one-piece forming process of a navigation buoy according to claim 1, characterized in that: The preheating temperature of the mold is set to 180°C-220°C, the preheating time is set to 10-15 minutes, the molding temperature of the product is set to 140°C-160°C, the molding time is set to 3-5 minutes, the cooling temperature is set to 40°C-60°C, and the cooling time is set to 15-20 minutes.

6. The one-piece forming process of a navigation buoy according to claim 1, characterized in that: The rotation speed of the rotating chassis is set to 5-10 revolutions per minute.

7. The one-piece forming process of a navigation buoy according to claim 1, characterized in that: The components and weight proportions of the modified polyethylene material include 80-90 parts of high-density polyethylene, 10-20 parts of linear low-density polyethylene, 1-3 parts of talc, 0-1 parts of calcium carbonate, 1-4 parts of wollastonite, 0-2 parts of calcium stearate, 1-2 parts of ultraviolet absorber, and 1-2 parts of phenolic antioxidant.

8. The one-piece forming process of a navigation buoy according to claim 1, characterized in that: The processing method of the modified polyethylene material comprises the following steps: mixing surface-activated high-density polyethylene and linear low-density polyethylene with talc-free powder, calcium carbonate, wollastonite, stearic acid, ultraviolet absorber and phenolic antioxidant, stirring the mixture evenly in a high-speed mixer to form a good interface bonding between the inorganic filler and the matrix material, then melt-blending the mixture through a twin-screw extruder, and finally cutting the extruded material into particles.

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