High-quality plastic die steel for automobile shell die and precision die manufactured by high-quality plastic die steel

Abstract

The invention discloses high-quality plastic die steel for an automobile shell die and a precision die manufactured by the high-quality plastic die steel, and belongs to the technical field of automobile dies, the high-quality plastic die steel comprises a plastic die steel body, mounting blocks are fixedly arranged at the corners of the bottom of the outer wall of the plastic die steel body, and mounting grooves are formed in the corners of the top of the outer wall of the plastic die steel body. According to the high-quality plastic die steel for the automobile shell die and the precision die manufactured through the high-quality plastic die steel, the chromium plating layer and the ceramic coating are arranged on the surface of the plastic die steel body, the wear resistance and corrosion resistance of the die are improved through the chromium plating layer, the hardness and high-temperature resistance of the die can be further improved through the ceramic coating, and therefore the service life of the die is prolonged; the chromium plating layer and the ceramic coating have excellent flatness and smoothness, so that the machining precision and quality of the mold can be remarkably improved, the surface of the lower mold can be efficiently and conveniently cleaned through the cleaning mechanism, the manual cleaning frequency and cost are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile moulds, and in particular relates to high-quality plastic mould steel for automobile shell moulds and a precision mould made thereof. Background Art

[0002] Plastic mold steel is a mold steel used for plastic production. Plastic mold materials are mainly mold steel. The development of mold steel has promoted the development of industrial products towards advanced, diversified, personalized and high value-added directions. Countries around the world have counted mold steel production into alloy tool steel, and its production accounts for about 70% to 80% of alloy tool steel.

[0003] Automobile shell molds are indispensable tools in the automobile manufacturing industry. They are used to mold the outer shell of the car, such as the body, doors, windows, etc. In a broad sense, automobile molds are the general term for molds used to manufacture all parts of the car, including injection molds, stamping molds, forging molds, etc. Automobile shell molds mainly refer to injection molds and stamping molds used to manufacture automobile shells. Plastic mold steel is usually used to make automobile shell molds.

[0004] With the rapid development of the automobile industry, the manufacturing accuracy and quality requirements for automobile shells and other parts are increasing. Plastic mold steel is a key material for making automobile shell molds, and its performance directly affects the quality and production efficiency of the product. However, automobile shell molds made of traditional plastic mold steel often have problems such as insufficient wear resistance and poor corrosion resistance. These problems restrict the development of the automobile manufacturing industry.

[0005] In the automotive manufacturing industry, precision injection molding of automobile shells is a key link in the production process. During long-term use, traditional injection molds are prone to accumulate plastic residues, oil stains and other pollutants on their surfaces and insides. These pollutants will affect the precision and surface quality of the molds, resulting in defects in the injection molded products, such as uneven surfaces, which affects the aesthetics of the products. In addition, the cleaning of the molds mainly relies on manual operations, including manual cleaning with tools such as scrapers, sandpaper or solvents. This method is not only inefficient and labor-intensive, but also difficult to ensure the thoroughness and consistency of cleaning. In addition, it is difficult to ensure a close fit between the upper mold and the lower mold during the injection molding process, and the mold gap will increase, resulting in uneven flow of the plastic melt during the injection molding process, insufficient filling, and it is not easy to reduce the generation of bubbles. Summary of the invention

[0006] The purpose of the present invention is to provide a chrome plating layer and a ceramic coating on the surface of the main body of the plastic mold steel, wherein the chrome plating layer improves the wear resistance and corrosion resistance of the mold, and the ceramic coating can further improve the hardness and high temperature resistance of the mold, thereby extending the service life of the mold. The chrome plating layer and the ceramic coating have excellent flatness and smoothness, and thus can significantly improve the processing accuracy and quality of the mold. Through the cleaning mechanism, the surface of the lower mold can be cleaned efficiently and conveniently, the frequency and cost of manual cleaning can be reduced, the production efficiency can be improved, the accuracy and smoothness of the lower mold can be maintained, the molding quality and consistency of the injection molded parts of the automobile shell can be improved, and the impact of dirt on the accuracy of the lower mold can be reduced. Influence, the fixed plate is driven to move by the moving parts, so that the upper mold and the lower mold are fitted together, and the connecting parts are used to achieve a tighter fit between the upper mold and the lower mold, ensuring uniform distribution and filling during the injection molding process, improving the dimensional accuracy and appearance of the product, and avoiding flash or burrs. The fixed plate is driven to move by the moving parts, and each set of elastic parts is used to increase the air pressure fluctuation inside the mold during the injection molding process, making it easier to squeeze out the gas originally wrapped in the molten material, reducing the formation of bubbles, and improving the fluidity of the molten material in the mold, so that it can fill the mold cavity more evenly, further reducing the retention and generation of bubbles.

[0007] The technical solution adopted by the present invention is as follows: a high-quality plastic mold steel for an automobile shell mold, comprising: a plastic mold steel main body, mounting blocks are fixedly arranged at the bottom corners of the outer wall of the plastic mold steel main body, and mounting grooves are opened at the top corners of the outer wall of the plastic mold steel main body.

[0008] Wherein, the outer wall of the plastic mold steel body is fixedly provided with a chrome plating layer, and the outer wall of the chrome plating layer is fixedly provided with a ceramic coating.

[0009] A precision mold for automobile shell mold made of high-quality plastic mold steel, including: A base having a mounting frame; A cleaning mechanism is arranged on the mounting frame, the cleaning mechanism comprises a rotating component, a mounting plate, four groups of elastic components, a bottom plate and a cleaning component, the rotating component is arranged on the mounting frame, the mounting plate is arranged on the rotating component, each group of the elastic components is arranged at the top corner of the outer wall of the mounting plate, the bottom plate is arranged between each group of elastic components, and the cleaning component is arranged on the mounting frame; The mold mechanism is arranged on the mounting frame, and the mold mechanism includes a moving part, a fixed plate, an upper mold, a lower mold and four groups of connecting parts. The moving part is arranged on the mounting frame, the fixed plate is arranged on the moving part, the upper mold is installed on the bottom of the outer wall of the fixed plate, and the lower mold is installed on the top of the outer wall of the bottom plate. Each group of connecting parts is arranged around the outer wall of the upper mold.

[0010] Wherein, the rotating component includes a rotating shaft, a first gear, a first rack and a first cylinder, the rotating shaft is rotatably embedded in the inner wall of the mounting frame, the mounting plate is fixedly sleeved on the outer wall of the rotating shaft, the first gear is fixedly sleeved on the outer wall of the rotating shaft, the first rack is slidably embedded in one side of the outer wall of the mounting frame, and the first rack is meshed with the first gear, the first cylinder is installed on one side of the outer wall of the mounting frame, and the first rack is fixedly set at the output end of the first cylinder.

[0011] Among them, each group of the elastic components includes a movable rod, a fixed tube and a first spring. The movable rod is fixedly arranged at the bottom of the outer wall of the base plate, the fixed tube is fixedly arranged at the top of the outer wall of the mounting plate, the movable rod is slidably embedded in the inner wall of the fixed tube, the first spring is fixedly arranged between the mounting plate and the base plate, and the first spring is sleeved on the outer wall of the fixed tube.

[0012] Wherein, the cleaning component includes a connecting frame, a second cylinder, a movable frame and a dry ice spray gun, the connecting frame is fixedly arranged on the inner wall of the mounting frame, the second cylinder is installed on one side of the outer wall of the connecting frame, the movable frame is fixedly arranged on the output end of the second cylinder, and the movable frame is slidably embedded on one side of the outer wall of the connecting frame, and the dry ice spray gun is installed on the inner wall of the movable frame.

[0013] Wherein, the movable parts include two third cylinders, a placing plate, two fourth cylinders, four guide rods, four guide blocks and four second springs, each of the third cylinders is installed at the bottom of the inner wall of the mounting frame, the placing plate is fixedly arranged at the output end of each third cylinder, each of the fourth cylinders is installed at the bottom of the outer wall of the placing plate, the fixed plate is fixedly arranged at the output end of each fourth cylinder, each of the guide rods is fixedly arranged at the bottom corner of the outer wall of the placing plate, each of the guide blocks is fixedly arranged around the outer wall of the lower mold, each of the guide rods slides through the bottom of the outer wall of the guide block, each of the second springs is fixedly arranged between the placing plate and the fixed plate, and each of the second springs is sleeved on the outer wall of the guide rod.

[0014] Among them, each group of connecting parts includes an installation frame, a first forward and reverse motor, a first threaded rod, a movable block, a fixed frame, a driving assembly and a fixed assembly. The installation frame is fixedly arranged on one side of the outer wall of the upper mold, the first forward and reverse motor is installed on one side of the inner wall of the installation frame by bolts, the first threaded rod is fixedly arranged on the output end of the first forward and reverse motor, the movable block is threadedly connected to the outer wall of the first threaded rod, and the movable block is slidably embedded in one side of the inner wall of the installation frame, the fixed frame is fixedly arranged on one side of the outer wall of the movable block, the driving assembly is arranged in the fixed frame, and the fixed assembly is arranged on the driving assembly.

[0015] Among them, each group of the driving components includes a second forward and reverse motor, three synchronous pulleys, a synchronous toothed belt and two bidirectional threaded rods. The second forward and reverse motor is installed on one side of the inner wall of the fixed frame by bolts. Each of the bidirectional threaded rods is rotatably embedded in the inner wall of the fixed frame. One of the synchronous pulleys is fixedly sleeved on the output end of the second forward and reverse motor, and the other two synchronous pulleys are fixedly sleeved on the outer wall of the bidirectional threaded rod. Each of the synchronous pulleys is meshed with the synchronous toothed belt.

[0016] Among them, each group of the fixing components includes four fixing blocks, a connecting frame and a connecting groove, each of the fixing blocks is threadedly connected to the outer wall of the bidirectional threaded rod, and each fixing block is movable through the outer wall of the fixing frame, the connecting frame is fixedly set on one side of the outer wall of the lower mold, and the connecting groove is opened at the bottom of the outer wall of the placement plate, two of the fixing blocks are slidably embedded in the inner wall of the connecting groove, and the other two fixing blocks are slidably embedded in the inner wall of the connecting frame.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In the present invention, a chrome plating layer and a ceramic coating are provided on the surface of the main body of the plastic mold steel. The chrome plating layer improves the wear resistance and corrosion resistance of the mold, and the ceramic coating can further improve the hardness and high temperature resistance of the mold, thereby extending the service life of the mold. The chrome plating layer and the ceramic coating have excellent flatness and smoothness, and thus can significantly improve the processing accuracy and quality of the mold.

[0018] (2) In the present invention, the cleaning mechanism can realize efficient and convenient cleaning of the surface of the lower mold, reduce the frequency and cost of manual cleaning, improve production efficiency, maintain the precision and smoothness of the lower mold, improve the molding quality and consistency of the automobile shell injection molded parts, and reduce the influence of dirt on the precision of the lower mold.

[0019] (3) In the present invention, the fixed plate is driven to move by the moving component so that the upper mold and the lower mold are fitted together, and the connecting component is used to achieve a tighter fit between the upper mold and the lower mold, thereby ensuring uniform distribution and filling during the injection molding process, improving the dimensional accuracy and appearance of the product, and avoiding the occurrence of flash or burrs.

[0020] (4) In the present invention, the fixed plate is driven to move by the moving component, and each group of elastic components is cooperated to increase the air pressure fluctuation inside the mold during the injection molding process, so that the gas originally wrapped in the molten material is more easily squeezed out, reducing the formation of bubbles, and improving the fluidity of the molten material in the mold, so that it can fill the mold cavity more evenly, further reducing the retention and generation of bubbles.

[0021] (5) In the present invention, the mounting plate is driven to rotate by the rotating component, which can drive the lower mold on the bottom plate to rotate, so that the lower mold faces downward, and cooperates with the ejection mechanism in the lower mold to eject the molded automobile shell from the mold. Under the weight of the molded automobile shell itself, the automobile shell after injection molding can be quickly removed from the mold, which significantly shortens the production cycle and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the plastic mold steel body of the present invention; Figure 2 It is a cross-sectional view of the plastic mold steel body of the present invention; Figure 3 It is a first perspective stereogram of the present invention; Figure 4 It is a second viewing angle stereogram of the present invention; Figure 5 It is a structural schematic diagram of the mounting frame of the present invention; Figure 6 It is a partial structural cross-sectional view of the present invention; Figure 7 It is a partial exploded view of the present invention; Figure 8 is a cross-sectional view of the mounting frame of the present invention; Fig. 9 is a cross-sectional view of a fixing frame of the present invention; Fig.10 It is a partial structural schematic diagram of the cleaning mechanism of the present invention.

[0023] Markings in the figure: 1. Plastic mold steel body; 2. Mounting block; 3. Mounting groove; 4. Chrome plating; 5. Ceramic coating; 6. Mounting frame; 7. Base; 8. Cleaning mechanism; 801. Mounting plate; 802. Bottom plate; 803. Rotating shaft; 804. First gear; 805. First rack; 806. First cylinder; 807. Movable rod; 808. Fixed cylinder; 809. First spring; 810. Connecting frame; 811. Second cylinder; 812. Movable frame; 813. Dry ice spray gun; 9. Mold mechanism; 901. Fixed Fixed plate; 902, upper mold; 903, lower mold; 904, third cylinder; 905, placement plate; 906, guide block; 907, second spring; 908, mounting frame; 909, first forward and reverse motor; 910, first threaded rod; 911, movable block; 912, fixed frame; 913, second forward and reverse motor; 914, synchronous pulley; 915, synchronous toothed belt; 916, bidirectional threaded rod; 917, fixed block; 918, connecting frame; 919, connecting groove; 920, fourth cylinder; 921, guide rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] Embodiment 1, refer to Figure 1-10 A high-quality plastic mold steel for automobile shell mold, comprising: a plastic mold steel main body 1, mounting blocks 2 are fixedly arranged at the bottom corners of the outer wall of the plastic mold steel main body 1, and mounting grooves 3 are opened at the top corners of the outer wall of the plastic mold steel main body 1.

[0026] In this embodiment: when two plastic mold steel bodies 1 are stacked together, the mounting block 2 on one of the plastic mold steel bodies 1 enters the mounting groove 3 of the other plastic mold steel body 1, so that the plastic mold steel bodies 1 have excellent stacking convenience and are easy to store and transport.

[0027] Specifically, the outer wall of the plastic mold steel body 1 is fixedly provided with a chrome plating layer 4 , and the outer wall of the chrome plating layer 4 is fixedly provided with a ceramic coating 5 .

[0028] In this embodiment: the chromium plating layer 4 utilizes an electrochemical method to deposit a thin layer of chromium metal on the surface of the plastic mold steel body 1. The chromium plating layer 4 has high hardness and wear resistance, as well as good chemical stability and corrosion resistance, and can improve the corrosion resistance and wear resistance of the plastic mold steel body 1. The ceramic coating 5 has extremely high hardness and wear resistance, as well as good corrosion resistance, and can further improve the surface properties of the mold steel, so as to facilitate the manufacture of high-precision molds or high-wear-resistant molds.

[0029] A precision mold for automobile shell mold made of high-quality plastic mold steel, including: A base 7 having a mounting frame 6 is provided; The cleaning mechanism 8 is arranged on the mounting frame 6. The cleaning mechanism 8 includes a rotating component, a mounting plate 801, four groups of elastic components, a bottom plate 802 and a cleaning component. The rotating component is arranged on the mounting frame 6, the mounting plate 801 is arranged on the rotating component, each group of elastic components is arranged at the top corner of the outer wall of the mounting plate 801, the bottom plate 802 is arranged between each group of elastic components, and the cleaning component is arranged on the mounting frame 6; The mold mechanism 9 is arranged on the mounting frame 6. The mold mechanism 9 includes a moving part, a fixed plate 901, an upper mold 902, a lower mold 903 and four groups of connecting parts. The moving part is arranged on the mounting frame 6, the fixed plate 901 is arranged on the moving part, the upper mold 902 is installed at the bottom of the outer wall of the fixed plate 901, and the lower mold 903 is installed at the top of the outer wall of the bottom plate 802. Each group of connecting parts is arranged around the outer wall of the upper mold 902.

[0030] In this embodiment: the mounting frame 6 on the base 7 is used to place the cleaning mechanism 8 and the mold mechanism 9. The cleaning mechanism 8 can realize efficient and convenient cleaning of the surface of the lower mold 903, reduce the frequency and cost of manual cleaning, improve production efficiency, maintain the accuracy and smoothness of the lower mold 903, improve the molding quality and consistency of the automobile shell injection molded parts, and reduce the influence of dirt on the accuracy of the lower mold 903. The rotating component drives the mounting plate 801 to rotate, which can drive the lower mold 903 on the bottom plate 802 to rotate, so that the lower mold 903 moves to the cleaning component, and the cleaning component cleans the lower mold 903, ensuring the cleanliness and smoothness of the surface of the lower mold 903, and reducing defects in the injection molding process, such as bubbles and shrinkage holes. , the fixed plate 901 is driven to move by the moving parts, so that the upper mold 902 and the lower mold 903 are fitted together, and the connecting parts are cooperated to achieve a tighter fit between the upper mold 902 and the lower mold 903, ensuring uniform distribution and filling during the injection molding process, improving the dimensional accuracy and appearance of the product, avoiding flash or burrs, and affecting the dimensional accuracy and appearance quality of the product. During the injection molding process, the fixed plate 901 is driven to move by the moving parts, and each group of elastic parts is cooperated to increase the air pressure fluctuation inside the mold, making it easier to squeeze out the gas originally wrapped in the molten material, reducing the formation of bubbles, and improving the fluidity of the molten material in the mold, so that it can fill the mold cavity more evenly, further reducing the retention and generation of bubbles.

[0031] Specifically, the rotating component includes a rotating shaft 803, a first gear 804, a first rack 805 and a first cylinder 806. The rotating shaft 803 is rotatably embedded in the inner wall of the mounting frame 6, the mounting plate 801 is fixedly sleeved on the outer wall of the rotating shaft 803, the first gear 804 is fixedly sleeved on the outer wall of the rotating shaft 803, the first rack 805 is slidably embedded in one side of the outer wall of the mounting frame 6, and the first rack 805 is meshed with the first gear 804, the first cylinder 806 is installed on one side of the outer wall of the mounting frame 6, and the first rack 805 is fixedly set at the output end of the first cylinder 806.

[0032] In this embodiment: the first rack 805 is driven to move on the mounting frame 6 by the first cylinder 806, so that the first gear 804 drives the rotating shaft 803 to rotate on the mounting frame 6, so that the mounting plate 801 drives the lower mold 903 to flip, so that the lower mold 903 faces downward, and cooperates with the ejection mechanism in the lower mold 903 to eject the molded car shell from the mold, and under the gravity of the molded car shell itself, the car shell after injection molding can be quickly removed from the mold, which significantly shortens the production cycle and improves production efficiency. At the same time, the lower mold 903 can also be tilted to facilitate cleaning of the surface of the lower mold 903 by cleaning components.

[0033] Specifically, each group of elastic components includes a movable rod 807, a fixed tube 808 and a first spring 809. The movable rod 807 is fixedly arranged at the bottom of the outer wall of the base plate 802, the fixed tube 808 is fixedly arranged at the top of the outer wall of the mounting plate 801, the movable rod 807 is slidably embedded in the inner wall of the fixed tube 808, the first spring 809 is fixedly arranged between the mounting plate 801 and the base plate 802, and the first spring 809 is sleeved on the outer wall of the fixed tube 808.

[0034] In this embodiment: by moving the movable rod 807 in the fixed cylinder 808, the upper mold 902 and the lower mold 903 are moved in cooperation with the first spring 809, which can reduce the formation of bubbles and improve the fluidity of the molten material in the mold, so that it can fill the mold cavity more evenly.

[0035] Specifically, the cleaning components include a connecting frame 810, a second cylinder 811, a movable frame 812 and a dry ice spray gun 813. The connecting frame 810 is fixedly arranged on the inner wall of the mounting frame 6, the second cylinder 811 is installed on one side of the outer wall of the connecting frame 810, the movable frame 812 is fixedly arranged on the output end of the second cylinder 811, and the movable frame 812 is slidably embedded on one side of the outer wall of the connecting frame 810, and the dry ice spray gun 813 is installed on the inner wall of the movable frame 812.

[0036] In this embodiment, the dry ice spray gun 813 is connected to an external dry ice cleaning machine, and the dry ice cleaning machine transports dry ice particles and compressed air to the dry ice spray gun 813. Inside the spray gun, the dry ice particles are accelerated and ejected under the action of the compressed air to form a high-speed dry ice jet. When the jet hits the surface of the lower mold 903 to be cleaned, the dry ice particles will sublime rapidly, generating a strong stripping force to strip dirt and pollutants from the surface of the lower mold 903. The movable frame 812 is driven to move on the connecting frame 810 by the second cylinder 811, which can drive the dry ice spray gun 813 to move, so that the dry ice spray gun 813 moves on the surface of the lower mold 903, and can clean the surface of the lower mold 903, thereby ensuring the cleanliness and smoothness of the surface of the lower mold 903 and reducing defects in the injection molding process.

[0037] Specifically, the movable parts include two third cylinders 904, a placement plate 905, two fourth cylinders 920, four guide rods 921, four guide blocks 906 and four second springs 907. Each third cylinder 904 is installed at the bottom of the inner wall of the mounting frame 6. The placement plate 905 is fixedly arranged at the output end of each third cylinder 904. Each fourth cylinder 920 is installed at the bottom of the outer wall of the placement plate 905. The fixed plate 901 is fixedly arranged at the output end of each fourth cylinder 920. Each guide rod 921 is fixedly arranged at the bottom corner of the outer wall of the placement plate 905. Each guide block 906 is fixedly arranged around the outer wall of the lower mold 903. Each guide rod 921 slides through the bottom of the outer wall of the guide block 906. Each second spring 907 is fixedly arranged between the placement plate 905 and the fixed plate 901, and each second spring 907 is sleeved on the outer wall of the guide rod 921.

[0038] In this embodiment: the placement plate 905 is driven by the third cylinder 904 to make the upper mold 902 and the lower mold 903 fit together, and the fixed plate 901 is driven to move by the fourth cylinder 920 to make the tightly connected upper mold 902 and lower mold 903 move up and down, and in conjunction with the first spring 809 and the second spring 907, the air pressure fluctuation inside the mold can be increased, so that the gas originally wrapped in the molten material can be squeezed out more easily, reducing the formation of bubbles, and the guide rod 921 and the guide block 906 are slidably matched to limit the fit between the upper mold 902 and the lower mold 903, and at the same time guide the movement of the upper mold 902 and the lower mold 903, and each guide rod 921 is movable and runs through the bottom of the outer wall of the fixed plate 901.

[0039] Specifically, each set of connecting components includes an installation frame 908, a first forward and reverse motor 909, a first threaded rod 910, a movable block 911, a fixed frame 912, a driving assembly and a fixed assembly. The installation frame 908 is fixedly arranged on one side of the outer wall of the upper mold 902, the first forward and reverse motor 909 is installed on one side of the inner wall of the installation frame 908 by bolts, the first threaded rod 910 is fixedly arranged on the output end of the first forward and reverse motor 909, the movable block 911 is threadedly connected to the outer wall of the first threaded rod 910, and the movable block 911 is slidably embedded in one side of the inner wall of the installation frame 908, the fixed frame 912 is fixedly arranged on one side of the outer wall of the movable block 911, the driving assembly is arranged in the fixed frame 912, and the fixed assembly is arranged on the driving assembly.

[0040] In this embodiment: the fixed frame 912 slides through the bottom and top of the inner wall of the installation frame 908, and is used for the installation and placement of the first forward and reverse motor 909 and the first threaded rod 910. The first forward and reverse motor 909 drives the first threaded rod 910 to rotate when powered on, and can drive the movable block 911 to move, so that the movable block 911 drives the fixed frame 912 to move. The fixed component is driven by the driving component in the fixed frame 912, so that the upper mold 902 is fixedly connected with the lower mold 903 and the placement plate 905 in turn, ensuring uniform distribution and filling during the injection molding process, thereby improving the dimensional accuracy and appearance of the product.

[0041] Specifically, each set of driving components includes a second forward and reverse motor 913, three synchronous pulleys 914, a synchronous toothed belt 915 and two bidirectional threaded rods 916. The second forward and reverse motor 913 is installed on one side of the inner wall of the fixed frame 912 by bolts. Each bidirectional threaded rod 916 is rotatably embedded in the inner wall of the fixed frame 912. One of the synchronous pulleys 914 is fixedly sleeved on the output end of the second forward and reverse motor 913, and the other two synchronous pulleys 914 are fixedly sleeved on the outer wall of the bidirectional threaded rod 916. Each synchronous pulley 914 is meshed with the synchronous toothed belt 915.

[0042] In this embodiment: the second forward and reverse motor 913 drives one of the synchronous pulleys 914 to rotate when powered on. Since each synchronous pulley 914 is transmitted through a synchronous toothed belt 915, the other two synchronous pulleys 914 can drive each bidirectional threaded rod 916 to rotate in the fixed frame 912, which is used to drive the fixed component.

[0043] Specifically, each set of fixing components includes four fixing blocks 917, a connecting frame 918 and a connecting groove 919. Each fixing block 917 is threadedly connected to the outer wall of the bidirectional threaded rod 916, and each fixing block 917 is movable through the outer wall of the fixing frame 912. The connecting frame 918 is fixedly set on one side of the outer wall of the lower mold 903, and the connecting groove 919 is opened at the bottom of the outer wall of the placement plate 905. Two of the fixing blocks 917 are slidably embedded in the inner wall of the connecting groove 919, and the other two fixing blocks 917 are slidably embedded in the inner wall of the connecting frame 918.

[0044] In this embodiment: each fixing block 917 is slidably matched with the fixing frame 912. As the bidirectional threaded rod 916 rotates, each of the two fixing blocks 917 located on the left-handed thread and the right-handed thread of the bidirectional threaded rod 916 can be driven to enter or leave the inner wall of the connecting frame 918 or the connecting groove 919, so that the upper mold 902 is fixedly connected with the lower mold 903 and the placement plate 905 in turn. When the upper mold 902 is tightly connected with the lower mold 903, flash or burrs can be effectively avoided. When the upper mold 902 is fixedly connected with the placement plate 905, the stability of the installation of the upper mold 902 can be further increased. The power of the first cylinder 806, the second cylinder 811, the dry ice spray gun 813, the third cylinder 904, the first forward and reverse motor 909, the second forward and reverse motor 913 and the fourth cylinder 920 comes from an external power supply, which should be electrically connected to the external power supply. The internal circuit principle structure belongs to the common knowledge of technicians in this field and will not be described in detail here. The model can be selected according to actual usage.

[0045] When in use, by starting each third cylinder 904, the third cylinder 904 drives the placement plate 905 to move, so that the upper mold 902 and the lower mold 903 are fitted together, and then the second forward and reverse motor 913 is started, and the second forward and reverse motor 913 drives one of the synchronous pulleys 914 to rotate. Since each synchronous pulley 914 is transmitted through the synchronous toothed belt 915, the other two synchronous pulleys 914 can drive each bidirectional threaded rod 916 to rotate in the fixed frame 912, so that the fixed block 917 is retracted into the fixed frame 912, and then the first forward and reverse motor 909 is started, and the first forward and reverse motor 909 drives the first threaded rod 910 to rotate, which can drive the movable block 911 to move, and the movable block 911 drives the fixed frame 912 downward The upper mold 902 and the lower mold 903 are tightly fitted together to avoid flash or burrs, which affect the dimensional accuracy and appearance quality of the product. Injection molding is performed through the injection molding tube of the upper mold 902. During the injection molding process, each fourth cylinder 920 is started, and the fourth cylinder 920 drives the fixed plate 901 to move, so that the tightly connected upper mold 902 and the lower mold 903 can be moved up and down, and the first spring 809 and the second spring 907 can be used to increase the air pressure inside the mold. The fluctuation makes it easier for the gas originally wrapped in the melt to be squeezed out, reducing the formation of bubbles. After the injection molding of the automobile shell is completed, the upper mold 902 and the lower mold 903 are separated, and the upper mold 902 returns to its original position, and the first cylinder 806 is started. The first cylinder 806 drives the first rack 805 to move on the mounting frame 6, so that the first gear 804 drives the rotating shaft 803 to rotate on the mounting frame 6, so that the mounting plate 801 drives the lower mold 903 to turn over, so that the lower mold 903 faces downward, and cooperates with the ejection mechanism in the lower mold 903 to eject the molded automobile shell from the mold, and under the gravity of the molded automobile shell itself, the automobile shell after injection molding can be quickly ejected from the mold. The lower mold 903 can be removed from the mold, which significantly shortens the production cycle and improves the production efficiency. When it is necessary to clean the lower mold 903, the lower mold 903 is tilted and set parallel to the connecting frame 810, and the second cylinder 811 is started. The second cylinder 811 drives the movable frame 812 to move on the connecting frame 810, which can drive the dry ice spray gun 813 to move, so that the dry ice spray gun 813 moves on the surface of the lower mold 903. The dry ice spray gun 813 sprays a dry ice jet. When the jet hits the surface of the lower mold 903 that needs to be cleaned, the dry ice particles will sublimate quickly, generating a strong peeling force to peel off the dirt and pollutants from the surface of the lower mold 903, ensuring the cleanliness and smoothness of the surface of the lower mold 903 and reducing defects in the injection molding process.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-quality plastic mold steel for automobile shell mold, comprising: A plastic mold steel body (1) is characterized in that: mounting blocks (2) are fixedly arranged at the bottom corners of the outer wall of the plastic mold steel body (1), and mounting grooves (3) are opened at the top corners of the outer wall of the plastic mold steel body (1).

2. The high-quality plastic mold steel for automobile shell mold according to claim 1, characterized in that: The outer wall of the plastic mould steel body (1) is fixedly provided with a chrome plating layer (4), and the outer wall of the chrome plating layer (4) is fixedly provided with a ceramic coating (5).

3. A precision mold made of high-quality plastic mold steel for automobile shell mold, characterized by: The high-quality plastic mold steel for automobile shell mold as claimed in claim 2 is used to prepare a precision mold for automobile shell mold, comprising: A base (7) provided with a mounting frame (6); A cleaning mechanism (8) is arranged on the mounting frame (6), the cleaning mechanism (8) comprising a rotating component, a mounting plate (801), four groups of elastic components, a bottom plate (802) and a cleaning component, the rotating component is arranged on the mounting frame (6), the mounting plate (801) is arranged on the rotating component, each group of the elastic components is arranged at a top corner of an outer wall of the mounting plate (801), the bottom plate (802) is arranged between each group of elastic components, and the cleaning component is arranged on the mounting frame (6); The mold mechanism (9) is arranged on the mounting frame (6), and comprises a moving part, a fixed plate (901), an upper mold (902), a lower mold (903) and four groups of connecting parts. The moving part is arranged on the mounting frame (6), the fixed plate (901) is arranged on the moving part, the upper mold (902) is installed on the bottom of the outer wall of the fixed plate (901), and the lower mold (903) is installed on the top of the outer wall of the bottom plate (802). Each group of connecting parts is arranged around the outer wall of the upper mold (902).

4. The precision mold made of high-quality plastic mold steel for automobile shell mold as claimed in claim 3, characterized in that: The rotating component comprises a rotating shaft (803), a first gear (804), a first rack (805) and a first cylinder (806); the rotating shaft (803) is rotatably embedded in the inner wall of the mounting frame (6); the mounting plate (801) is fixedly sleeved on the outer wall of the rotating shaft (803); the first gear (804) is fixedly sleeved on the outer wall of the rotating shaft (803); the first rack (805) is slidably embedded in one side of the outer wall of the mounting frame (6), and the first rack (805) is meshed with the first gear (804); the first cylinder (806) is mounted on one side of the outer wall of the mounting frame (6); and the first rack (805) is fixedly arranged at the output end of the first cylinder (806).

5. The precision mold made of high-quality plastic mold steel for automobile shell mold as claimed in claim 4, characterized in that: Each group of elastic components comprises a movable rod (807), a fixed tube (808) and a first spring (809); the movable rod (807) is fixedly arranged at the bottom of the outer wall of the bottom plate (802); the fixed tube (808) is fixedly arranged at the top of the outer wall of the mounting plate (801); the movable rod (807) is slidably embedded in the inner wall of the fixed tube (808); the first spring (809) is fixedly arranged between the mounting plate (801) and the bottom plate (802); and the first spring (809) is sleeved on the outer wall of the fixed tube (808).

6. The precision mold made of high-quality plastic mold steel for automobile shell mold as claimed in claim 5, characterized in that: The cleaning component comprises a connecting frame (810), a second cylinder (811), a movable frame (812) and a dry ice spray gun (813); the connecting frame (810) is fixedly arranged on the inner wall of the mounting frame (6); the second cylinder (811) is installed on one side of the outer wall of the connecting frame (810); the movable frame (812) is fixedly arranged on the output end of the second cylinder (811), and the movable frame (812) is slidably embedded on one side of the outer wall of the connecting frame (810); and the dry ice spray gun (813) is installed on the inner wall of the movable frame (812).

7. The precision mold made of high-quality plastic mold steel for automobile shell mold according to claim 6, characterized in that: The moving parts include two third cylinders (904), a placement plate (905), two fourth cylinders (920), four guide rods (921), four guide blocks (906) and four second springs (907), each of the third cylinders (904) is mounted on the bottom of the inner wall of the mounting frame (6), the placement plate (905) is fixedly arranged at the output end of each third cylinder (904), each of the fourth cylinders (920) is mounted on the bottom of the outer wall of the placement plate (905), and the fixing plate (901) is fixedly arranged at each The output end of the fourth cylinder (920), each of the guide rods (921) is fixedly arranged at the bottom corner of the outer wall of the placement plate (905), each of the guide blocks (906) is fixedly arranged around the outer wall of the lower mold (903), each of the guide rods (921) slides through the bottom of the outer wall of the guide block (906), each of the second springs (907) is fixedly arranged between the placement plate (905) and the fixed plate (901), and each of the second springs (907) is sleeved on the outer wall of the guide rod (921).

8. The precision mold made of high-quality plastic mold steel for automobile shell mold as claimed in claim 7, characterized in that: Each group of the connecting components comprises a mounting frame (908), a first forward and reverse motor (909), a first threaded rod (910), a movable block (911), a fixed frame (912), a driving assembly and a fixed assembly. The mounting frame (908) is fixedly arranged on one side of an outer wall of the upper mold (902); the first forward and reverse motor (909) is mounted on one side of an inner wall of the mounting frame (908) by bolts; the first threaded rod (910) is fixedly arranged on an output end of the first forward and reverse motor (909); the movable block (911) is threadedly connected to the outer wall of the first threaded rod (910), and the movable block (911) is slidably embedded on one side of the inner wall of the mounting frame (908); the fixed frame (912) is fixedly arranged on one side of an outer wall of the movable block (911); the driving assembly is arranged in the fixed frame (912); and the fixed assembly is arranged on the driving assembly.

9. The precision mold made of high-quality plastic mold steel for automobile shell mold as claimed in claim 8, characterized in that: Each group of the driving components comprises a second forward and reverse motor (913), three synchronous pulleys (914), a synchronous toothed belt (915) and two bidirectional threaded rods (916); the second forward and reverse motor (913) is mounted on one side of the inner wall of the fixed frame (912) by means of bolts; each of the bidirectional threaded rods (916) is rotatably embedded in the inner wall of the fixed frame (912); one of the synchronous pulleys (914) is fixedly sleeved on the output end of the second forward and reverse motor (913); the other two synchronous pulleys (914) are fixedly sleeved on the outer wall of the bidirectional threaded rod (916); and each of the synchronous pulleys (914) is meshed with the synchronous toothed belt (915).

10. The precision mold made of high-quality plastic mold steel for automobile shell mold according to claim 9, characterized in that: Each group of the fixing components comprises four fixing blocks (917), a connecting frame (918) and a connecting groove (919); each fixing block (917) is threadedly connected to the outer wall of the bidirectional threaded rod (916), and each fixing block (917) is movably inserted through the outer wall of the fixing frame (912); the connecting frame (918) is fixedly arranged on one side of the outer wall of the lower mold (903); the connecting groove (919) is opened at the bottom of the outer wall of the placement plate (905); two of the fixing blocks (917) are slidably embedded in the inner wall of the connecting groove (919), and the other two fixing blocks (917) are slidably embedded in the inner wall of the connecting frame (918).

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