Extrusion molding device facilitating demolding

Abstract

The application discloses a kind of extrusion forming devices of convenient demoulding, including base, rotatably equipped with swivel ring on the base, multiple supports fixed on the base are arranged on the swivel ring, each support center is equipped with downward hydraulic cylinder, the piston rod end of the hydraulic cylinder is fixed with pressing plate, the pressing plate is set in the support below, multiple molds are distributed on the swivel ring, the mold includes shell, interface is opened in the shell and is connected to its inside.Compared with prior art, the extrusion forming device of convenient demoulding has the beneficial effects of optimizing product quality, improving production efficiency, simplifying operation process, prolonging mold life, improving safety and saving energy, which helps to improve production efficiency and product quality, reduce production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material processing, in particular to an extrusion forming device facilitating demolding. BACKGROUND

[0002] Extrusion forming is a common method for processing plastics, rubbers and other materials. The material is heated to a plastic state and then extruded into a mold to form a product. However, the existing extrusion forming device often faces some deficiencies in the demolding process, mainly in the following aspects: adhesion problem: in traditional extrusion forming, due to the friction and adhesion of the material to the surface of the mold, the finished product often cannot be smoothly demolded. Especially for some complex shapes or small structures of the mold, the adhesion problem is more serious, resulting in low production efficiency. Difficulty in demolding: in traditional extrusion forming, the demolding process needs to be assisted manually or by using other tools, which not only increases the operation steps, but also may cause product damage or mold wear. Unstable product quality: due to the inability of traditional extrusion forming to accurately control the extrusion force and deformation of each mold, the quality of the finished product is unstable, and product size deviation or defects are prone to occur. Low production efficiency: the traditional extrusion forming device often needs to be separately operated for feeding and extruding, and the production efficiency is limited, especially in large-scale production, the efficiency is low.

[0003] Therefore, it is necessary to provide an extrusion forming device facilitating demolding to solve the problems raised in the background. SUMMARY

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an extrusion forming device facilitating demolding, comprising a base, a swivel ring rotatably arranged on the base, a plurality of supports fixed on the base arranged on the swivel ring, a hydraulic cylinder arranged at the center of each support downward, a piston rod of the hydraulic cylinder fixed with a pressing plate, the pressing plate being arranged below the support in a lifting manner, a plurality of molds distributed on the swivel ring, the mold comprising a shell, an interface penetrating into the shell being arranged in the shell.

[0005] Further, as a preferred, a material moving manipulator is arranged on one side of the base, the material moving manipulator being uniformly distributed with the plurality of supports on the swivel ring and being capable of being aligned with each mold in turn.

[0006] Further, as a preferred, a plurality of horizontally distributed air tubes are rotatably embedded in the bottom of the shell, the air tubes being penetrated into both sides of the shell at both ends and being connected with the interface in turn, the uppermost end of the air tube being tangent to the top of the bottom of the shell, and the sidewall of the air tube being provided with air holes.

[0007] Further, as preferred, two ends of the air pipe penetrating out of the shell are fixed with connecting rods, both sides of the shell are respectively provided with slide rods, each connecting rod on the same side is slidably connected into the corresponding slide rod, and both ends of the slide rods are fixed together through a connecting shaft.

[0008] Further, as preferred, a spring is connected between the slide rod and the bottom of the shell, and the spring provides an elastic force upwardly to the slide rod.

[0009] Further, as preferred, the interface is connected to a high-pressure air bottle with refrigeration effect.

[0010] Further, as preferred, the shell is coated with a polytetrafluoroethylene coating.

[0011] Compared with the prior art, the beneficial effects of the present application are:

[0012] In the present application, multiple hydraulic-driven pressing plates are used to extrude multiple molds, and the deformation amount of the material is small each time, which avoids the close adhesion of the material to the mold and ensures that each mold can obtain appropriate extrusion force, so that the forming effect of the product is more uniform. This helps to optimize the quality of finished products and reduce defects and scrap rates.

[0013] In the present application, through the design of multiple supports and material moving manipulators, the feeding and discharging and extrusion processes can be carried out simultaneously, thereby improving the production efficiency. Moreover, the hydraulic-driven design can realize accurate control of the mold, accelerate the extrusion speed, and reduce the production cycle.

[0014] In the present application, through the design of the connecting structure of the connecting rod, the slide rod and the connecting shaft, and the provision of the spring between the slide rod and the bottom of the shell to provide an upward elastic force, the air hole of the air pipe can automatically rotate according to the action of the pressing plate. When the pressing plate is pressed down, the slide rod will move downward, and the angle of the connecting rod will make the air hole of the air pipe away from the bottom of the shell, so as to avoid the material being extruded into the air pipe; when the pressing plate is not pressed, the slide rod will move upward, and the angle of the connecting rod will make the air hole of the air pipe towards the bottom of the shell, so that the high-pressure air can be injected into the shell, facilitating demolding. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of an extrusion molding device facilitating demolding;

[0016] Figure 2 It is a structure schematic view of a mold;

[0017] Figure 3 It is a structure schematic view of a mold half cut;

[0018] In the figure: 1, base; 2, swivel ring; 3, support; 4, hydraulic cylinder; 5, pressing plate; 6, mold; 7, material moving manipulator; 61, shell; 62, air pipe; 63, interface; 64, connecting rod; 65, sliding rod; 66, connecting shaft; 67, spring; 68, air hole. DETAILED DESCRIPTION

[0019] Referring to Figure 1 In the embodiment of the present application, a convenient demolding extrusion forming device comprises a base 1, a swivel ring 2 rotatably arranged on the base 1, a plurality of supports 3 fixed on the base 1 arranged on the swivel ring 2, a downward hydraulic cylinder 4 arranged at the center of each support 3, a piston rod end of the hydraulic cylinder 4 fixed with a pressing plate 5, the pressing plate 5 arranged below the support 3 in a lifting manner, a male mold capable of being connected in the pressing plate 5, a plurality of molds 6 distributed on the swivel ring 2, and a plurality of pressing plates 5 capable of extruding each mold 6 in turn. The design of hydraulic drive can realize accurate control of the mold, ensure that the deformation amount of the material is small each time, avoid the material closely adhering to the mold, ensure that each mold can obtain appropriate extrusion force, make the forming effect of the product more uniform, be beneficial to demolding, and the mold 6 comprises a shell 61, an interface 63 penetrating into the inside of the shell 61 is arranged in the shell 61, the interface 63 is capable of being connected with a high-pressure air bottle, and the injection of high-pressure air can help the product to be smoothly separated from the mold inside during demolding, which is convenient for demolding.

[0020] In the embodiment, a material moving manipulator 7 is arranged on one side of the base 1, the material moving manipulator 7 and the plurality of supports 3 are uniformly distributed on the swivel ring 2, and can be aligned with each mold 6 in turn. Through the design of the plurality of supports 3 and the material moving manipulator 7, the feeding and discharging and the extrusion in turn can be carried out at the same time, and the production efficiency is improved.

[0021] Referring to Figure 2 and Figure 3In the embodiment, the bottom of the shell 61 is rotatably embedded with a plurality of horizontally distributed air pipes 62, the two ends of the air pipes 62 are penetrated to the two sides of the shell 61, and are sequentially connected with the interfaces 63, the uppermost end of the air pipe 62 is tangent to the top of the bottom of the shell 61, and the side wall of the air pipe 62 is provided with air holes 68. By rotating the air pipe 62, the air holes 68 can be directed towards or away from the bottom of the shell 61. When the material is extruded, the air holes are rotated to a position away from the bottom of the shell 61, so as to avoid the material being extruded into the air pipe 62, thereby ensuring the smoothness of the air pipe 62 and preventing blockage. After the extrusion is completed, the air pipe 62 is rotated to direct the air holes towards the bottom of the shell, so that high-pressure air can be injected into the shell. The injection of high-pressure air can help the product to be smoothly separated from the mold, thereby realizing the effect of easy demolding. By designing the rotating mechanism of the air pipe 62 and the air hole, the material can be prevented from blocking the air pipe 62 during extrusion, and the demolding is assisted after the extrusion is completed, thereby improving the production efficiency and demolding effect of the extrusion molding device.

[0022] In the embodiment, the two ends of the air pipe 62 penetrating out of the shell 61 are fixed with connecting rods 64, the two sides of the shell 61 are respectively provided with slide rods 65, each connecting rod 64 on the same side is slidably connected into the corresponding slide rod 65, and the two ends of the slide rod 65 are fixed together through a connecting shaft 66. The slide rod 65 and the connecting shaft 66 are both within the coverage range of the pressing plate 5.

[0023] In the embodiment, the slide rod 65 is connected with the bottom of the shell 61 through a spring 67, the spring 67 provides an upward elastic force for the slide rod 65. When the slide rod 65 moves upward, the angle of the connecting rod 64 is such that the air holes 68 of the air pipe 62 are directed towards the bottom of the shell 61. When the pressing plate 5 is pressed downward, the slide rod 65 moves downward, at this time the angle of the connecting rod 64 is such that the air holes 68 of the air pipe 62 are away from the bottom of the shell 61, so that the air pipe 62 can automatically rotate according to whether the pressing plate 5 is pressed. By automatically rotating the air holes 68, the step of manually adjusting the position of the air holes 68 is avoided, the operation process is simplified, and the production efficiency is improved.

[0024] In the embodiment, the interface 63 is connected to a high-pressure air bottle with refrigeration effect. After the finished product is extruded, low-temperature compressed air is injected into the mold 6 to cool the finished product. The finished product is cooled and shrinks under the effect of thermal expansion and cold contraction, which helps the finished product to be separated from the mold.

[0025] In the embodiment, the shell 61 is coated with a polytetrafluoroethylene coating. The polytetrafluoroethylene coating has very low surface tension and friction coefficient, reduces the adhesion between the material and the shell 61, and makes the demolding process smoother.

[0026] In specific implementation, the following steps are included:

[0027] Mold placement: evenly distribute multiple molds 6 on the rotating ring 2, and connect the male molds in each pressing plate 5;

[0028] Control the hydraulic system: start the hydraulic system, drive the piston rod through the hydraulic system, and make the pressing plate 5 ascend and descend. The control of the hydraulic system can realize accurate control of the mold 6, ensure that the deformation of the material is small each time, avoid the material being tightly attached to the mold, and be beneficial to demolding;

[0029] Start extrusion: start the hydraulic system, align each mold 6 one by one, and make the pressing plate 5 of the hydraulic cylinder 4 be extruded by multiple pressing plates in turn. During the extrusion process, ensure that the air hole is away from the bottom of the shell, prevent the material from being extruded into the air pipe 62, and after the extrusion is completed, rotate the air pipe 62 to make the air hole face the bottom of the shell, inject high-pressure air, help the product to be separated from the inside of the mold, and realize the effect of easy demolding;

[0030] Demolding: through the rotation mechanism of the air pipe 62 and the air hole, the air hole is automatically rotated. After the extrusion is completed, the air hole is made to face the bottom of the shell by rotating the air pipe 62, high-pressure air is injected, the product is helped to be separated from the inside of the mold, and the effect of easy demolding is realized;

[0031] Material moving and next round of extrusion: during the extrusion process, the material moving manipulator 7 on one side of the base is evenly distributed on the rotating ring 2 with multiple supports 3, so that the feeding and extrusion processes can be carried out at the same time, and the production efficiency is improved;

[0032] End operation: after the extrusion is completed, the hydraulic system and the high-pressure air bottle are closed, the device is cleaned and maintained, and it is ensured that it is in good condition before the next use.

[0033] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An extrusion molding device facilitating demolding, comprising a base (1), characterized in that, The base (1) rotatably provided with a swivel ring (2), the swivel ring (2) is provided with a plurality of fixed on the base (1) support (3), each of the support (3) center is provided with a downward hydraulic cylinder (4), the piston rod end of the hydraulic cylinder (4) and the pressing plate (5) is fixed, the pressing plate (5) is provided below the support (3), the swivel ring (2) is distributed with a plurality of mold (6), the mold (6) includes a shell (61), the shell (61) is provided with an interface (63) through to its inside; The bottom of the shell (61) rotatably embedded with a plurality of horizontal distribution of air pipe (62), both ends of the air pipe (62) through to the both sides of the shell (61), and in turn with the interface (63), the uppermost end of the air pipe (62) and the shell (61) bottom above tangent, the air pipe (62) side wall opening has a gas hole (68); The air pipe (62) through to the both ends of the shell (61) outside the fixed connecting rod (64), the shell (61) both sides are respectively provided with a slide bar (65), each connecting rod (64) on the same side is slidably connected to the corresponding slide bar (65), both ends of the slide bar (65) are fixed together through the connecting shaft (66); The slide bar (65) and the shell (61) bottom connection spring (67), the spring (67) provides the slide bar (65) upward elastic force.

2. The extrusion apparatus of claim 1, wherein, The base (1) side is provided with a material moving manipulator (7), the material moving manipulator (7) and a plurality of support (3) are evenly distributed on the swivel ring (2), and can be aligned in turn each mold (6).

3. The extrusion apparatus of claim 1, wherein, The interface (63) is connected to the high pressure air bottle with refrigeration effect.

4. The extrusion apparatus of claim 1, wherein, The shell (61) is coated with oil polytetrafluoroethylene coating.

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