Shaping device for preventing buckling deformation of automobile injection molding part

Abstract

The utility model discloses a shaping device for preventing buckling deformation of an automobile injection molding part. The shaping device comprises an injection molding table, an injection molding chamber and a lower mold are mounted at the top of the injection molding table, an upper mold is mounted in the injection molding chamber through a hydraulic rod, an ejector plate is mounted at the bottom end in the lower mold, a shaping assembly is mounted in the lower mold, and the shaping assembly comprises a frame plate. Through the design of the pneumatic assembly and the shaping assembly, when injection molding is finished and materials need to be taken, the ejector plate is driven by the air cylinder to ascend at the same speed as the ascending speed of the upper mold, the T-shaped rod drives the lifting plate to move upwards at the moment, and air is conveyed into the air cavity in the ascending process of the lifting plate, so that the frame plate ascends at the same speed as the ascending speed of the upper mold; by arranging the frame plate and the upper mold, the frame of the workpiece is clamped by the frame plate and the upper mold in the ascending process, and the injection molding part is driven to ascend for a small distance, so that the frame of the injection molding part is effectively prevented from being damaged in the ejection process, meanwhile, compared with clamping of an elastic part, the clamping is more stable and safer, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts injection molding, in particular to a shaping device for preventing automobile injection molding parts from warping and deformation. Background Art

[0002] Injection molding of automotive parts is a process commonly used in the manufacture of automotive parts. By injecting molten plastic into a mold and obtaining the desired shape after cooling and solidification, this process plays an important role in the manufacture of automotive parts and can produce various parts with complex shapes and high precision requirements.

[0003] At present, some injection-molded parts with frames among automotive parts are prone to generating pulling force on the frame of the injection-molded parts when the mold is opened and lifted up by the molding device, which may cause the frame of the injection-molded parts to shrink, warp, and deform. Therefore, Patent No. CN216230529U discloses a molding device that prevents injection-molded parts from warping and deformation. Under the action of the first elastic member and the second elastic member, the frame-type top plate and the frame-type heat insulation plate will move upward with the upper mold, thereby clamping the frame of the injection-molded part.

[0004] However, the above scheme has certain shortcomings. Due to the certain weight of automobile parts, elastic clamping may lead to instability and even affect the shaping effect. In addition, one side of the elastic part may fatigue over time and undergo irreversible deformation, requiring frequent replacement. Therefore, in view of this, research and improvement are conducted on the existing structure and deficiencies, and a shaping device is proposed to prevent warping and deformation of automobile injection molded parts. Summary of the Invention

[0005] The purpose of the utility model is to provide a shaping device for preventing automobile injection molded parts from warping and deformation, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes an injection molding table, an injection molding chamber and a lower mold are installed on the top of the injection molding table, an upper mold is installed inside the injection molding chamber through a hydraulic rod, and a top plate is installed at the bottom end of the lower mold. A shaping component is installed inside the lower mold, and the shaping component includes a frame plate. The outer wall of the frame plate is in contact with the inner wall of the lower mold, and the inner wall of the frame plate is aligned with the inner side of the lower mold. A piston rod is fixed at the four corners of the bottom of the frame plate, and a piston plate fixed at the bottom of the piston rod slides sealingly on the inner wall of the air cavity opened in the lower mold. A pneumatic component is installed on the upper mold and the inner wall of the injection molding chamber, and the pneumatic component is used to supply or extract air into the air cavity.

[0007] Preferably, the pneumatic assembly includes a pressure plate and a lifting plate, the pressure plates are fixed on both sides of the upper mold, the bottom surface of the pressure plate fits with the top surface of the lifting plate, the piston rod 2 fixed on the top of the lifting plate is inserted into the bottom opening of the piston cylinder, and the piston plate on the top of the piston rod 2 slides sealed on the inner wall of the piston cylinder, the piston cylinder is fixed to the inner wall of the injection molding chamber, and one side of the piston cylinder is connected to the conduit provided on the outer wall of the injection molding chamber, the two air cavities on the same side of the lower mold are also connected to the inner wall of the injection molding chamber with a conduit, and the inner and outer conduits are connected to each other.

[0008] Preferably, a small motor is installed on the top of the pressing plate, a T-shaped rod is installed on the bottom of the small motor, and the T-shaped rod passes through a rectangular opening provided on the lifting plate.

[0009] Preferably, rubber pads are bonded to the bottom surfaces of the piston plates of the first piston rod and the second piston rod, and the rubber pads are respectively pressed and fitted with the air cavity and the inner bottom surface of the piston cylinder in the injection molding state.

[0010] Preferably, a circular magnetic piece is installed at the bottom of the piston cylinder, and the magnetic piece can be adsorbed together with the lifting plate made of metal.

[0011] Preferably, clamp sleeves are welded on both sides of the inner wall of the injection molding chamber, and the piston cylinder passes through the clamp sleeves and is fixedly connected using bolts.

[0012] Preferably, a convex-shaped slider is fixed on one side of the lifting plate, and the slider slides in a slideway provided on the inner wall of the injection molding chamber.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The utility model adopts the design of the above-mentioned pneumatic components and shaping components. When the injection molding is completed and the material needs to be taken out, the ejector plate is driven to rise by the cylinder and the speed is consistent with the rising speed of the upper mold. At this time, the T-shaped rod drives the lifting plate to move up. During the rising process of the lifting plate, air is supplied to the inside of the air cavity, so that the frame plate rises and the speed is consistent with the rising speed of the upper mold. During the rising process, the workpiece frame is clamped by the frame plate and the upper mold, and drives the injection molded part to rise a short distance, thereby effectively avoiding damage to the frame of the injection molded part during the ejection process. At the same time, compared with the clamping of elastic parts, it is more stable and safe, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a shaping device for preventing automobile injection molded parts from warping and deformation;

[0016] Figure 2 This is a schematic diagram of the overall front view cross-sectional structure of a shaping device for preventing automobile injection molded parts from warping and deformation;

[0017] Figure 3This paper proposes a shaping device to prevent automobile injection molding parts from warping and deformation Figure 2 A schematic diagram of the enlarged structure at point A;

[0018] Figure 4 This paper proposes a shaping device to prevent automobile injection molding parts from warping and deformation Figure 2 A schematic diagram of the enlarged structure at point B;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of a shaping device for preventing automobile injection molding parts from warping and deformation and a shaping component and a pneumatic component;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the pneumatic components of a shaping device for preventing automobile injection molding parts from warping and deformation;

[0021] Figure 7 The present invention provides a schematic diagram of the three-dimensional structure of the lower mold of a shaping device for preventing automobile injection molded parts from warping and deformation.

[0022] In the figure: 1. Injection molding table; 2. Injection molding chamber; 3. Lower mold; 4. Upper mold; 5. Upper mold; 6. Pneumatic component; 61. Pressure plate; 62. Lifting plate; 63. Piston rod 2; 64. Piston cylinder; 65. Conduit; 66. Small motor; 68. Slider; 69. Magnetic sheet; 610. Clamp sleeve; 7. Shaping component; 71. Frame plate; 72. Piston rod 1; 73. Air cavity; 8. Rubber pad; 9. Ejector plate. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] like Figure 1-Figure 7 As shown, it includes an injection molding table 1, an injection molding chamber 2 and a lower mold 3 are installed on the top of the injection molding table 1, an upper mold 5 is installed inside the injection molding chamber 2 through a hydraulic rod 4, a top plate 9 is installed at the bottom end of the lower mold 3, and a shaping component 7 is installed inside the lower mold 3. The shaping component 7 includes a frame plate 71, the outer wall of the frame plate 71 is in contact with the inner wall of the lower mold 3, and the inner wall of the frame plate 71 is aligned with the inner side of the lower mold 3. Four piston rods 72 are fixed at the four corners of the bottom of the frame plate 71, and the piston plate fixed at the bottom of the piston rod 72 slides in a sealed manner on the inner wall of the air cavity 73 opened in the lower mold 3. The upper mold 5 and the inner wall of the injection molding chamber 2 are connected with a pneumatic component 6, which is used to supply or extract air into the air cavity 73;

[0025] The pneumatic assembly 6 includes a pressure plate 61 and a lifting plate 62. The pressure plate 61 is fixed on both sides of the upper mold 5. The bottom surface of the pressure plate 61 is in contact with the top surface of the lifting plate 62. The piston rod 63 fixed on the top of the lifting plate 62 is inserted into the bottom opening of the piston cylinder 64, and the piston plate on the top of the piston rod 63 slides sealed on the inner wall of the piston cylinder 64. The piston cylinder 64 is fixed on the inner wall of the injection chamber 2, and one side of the piston cylinder 64 is connected to the conduit 65 set on the outer wall of the injection chamber 2. The two air cavities 73 on the same side of the lower mold 3 are also connected to the inner wall of the injection chamber 2 with a conduit 65, and the inner and outer conduits 65 are connected to each other. A small motor 66 is installed on the top of the pressure plate 61, and a T-shaped rod 67 is installed at the bottom of the small motor 66. The T-shaped rod 67 passes through the rectangular opening opened on the lifting plate 62.

[0026] Through the design of the above-mentioned pneumatic component 6 and shaping component 7, during injection molding, the hydraulic rod 4 drives the upper mold 5 to descend and fit into the lower mold 3. During this process, the pressing plate 61 moves down and contacts the lifting plate 62, driving the lifting plate 62 to descend, and the piston rod 2 63 moves down synchronously, and makes more space inside the piston cylinder 64. The piston cylinder 64 can evacuate air to the two air cavities 73 on the same side through the two conduits 65, so that the piston plate at the bottom of the piston rod 1 72 moves down in the air cavity 73. Finally, when the upper mold 5 is fitted with the lower mold 3, the bottom surface of the frame plate 71 is in close contact with the lower mold 3, and at this time, the T-shaped rod 67 passes through the rectangular opening of the lifting plate 62, and at the same time, Figure 5 It can be seen that the frame of the workpiece is located at the top surface position of the frame plate 71, and then injection molding is carried out through the injection molding port of the upper mold 5. When the injection molding is completed and the material needs to be taken out, the small motor 66 starts to drive the T-shaped rod 67 to rotate ninety degrees. The bottom of the T-shaped rod 67 is perpendicular to the rectangular opening of the lifting plate 62. Then the ejector plate 9 is driven to rise by the cylinder and the rising speed is consistent with the upper mold 5. At this time, the T-shaped rod 67 can drive the lifting plate 62 to move up. After the lifting plate 62 returns to the initial position, the upper mold 5 and the ejector plate 9 stop moving, and the T-shaped rod 67 is rotated and reset and the upper mold 5 is started to rise. The T-shaped rod 67 is moved out of the opening of the lifting plate 62. During the rising process of the lifting plate 62, the piston cylinder 64 supplies air to the inside of the air cavity 73, causing the frame plate 71 to rise and the speed is consistent with the upper mold 5. The lifting speed is consistent, so that during the rising process, the workpiece frame is clamped and moved upward by the frame plate 71 and the upper mold 5, thereby effectively avoiding damage to the frame of the injection molded part during the ejection process. At the same time, it is more stable and safe than elastic parts, which improves work efficiency. Finally, the injection molded part can be taken out. It should be noted that in the initial position, the top piston plate of the piston rod 2 63 is located at the upper end of the piston cylinder 64, and the lifting plate 62 is in contact with the bottom end of the piston cylinder 64. At the same time, the bottom surface of the frame plate 71 is not in contact with the lower mold 3, and the top surface of the injection molded part frame is also in contact with the bottom surface of the upper mold 5 after injection molding. At the same time, the ejection plate 9 is also an existing technical means, which will not be elaborated here. It should also be noted that in actual applications, pneumatic can also be replaced with hydraulic method, which is not limited here.

[0027] The bottom surfaces of the piston plates of the piston rod 1 72 and the piston rod 2 63 are both bonded with rubber pads 8 , and the rubber pads 8 are respectively pressed and fitted with the air cavity 73 and the inner bottom surface of the piston cylinder 64 in the injection molding state.

[0028] As mentioned above, the rubber pad 8 can make the piston plates of piston rod 1 72 and piston rod 2 63 fit more closely with the air cavity 73 and the inner bottom surface of piston cylinder 64 during injection molding, while avoiding damage to parts caused by excessive pressure, and play a certain protective role. At the same time, when clamping, the rubber pad 8 at the bottom of piston rod 1 72 can also create a little more space through deformation, so that the frame plate 71 can fit closely with the frame of the injection molded part and is not easy to damage the workpiece.

[0029] A circular magnetic piece 69 is installed at the bottom of the piston cylinder 64, and the magnetic piece 69 can be adsorbed together with the metal lifting plate 62.

[0030] As described above, the magnetic sheet 69 can be used to adsorb the lifting plate 62 when it is reset, so that the lifting plate 62 can maintain a stable state at the initial position, which is very practical.

[0031] Clamp sleeves 610 are welded on both sides of the inner wall of the injection molding chamber 2 , and the piston cylinder 64 passes through the clamp sleeves 610 and is fixed with bolts. A convex-shaped slider 68 is fixed on one side of the lifting plate 62 , and the slider 68 slides in the slideway opened on the inner wall of the injection molding chamber 2 .

[0032] As described above, in terms of operational stability design, the clamp sleeve 610 makes the position of the piston cylinder 64 more secure and reliable, and the slider 68 further limits the lifting plate 62, thereby preventing the piston cylinder 64 or the lifting plate 62 from running smoothly or being damaged during operation.

[0033] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A shaping device for preventing automobile injection molded parts from warping and deformation, comprising an injection molding table (1), an injection molding chamber (2) and a lower mold (3) being installed on the top of the injection molding table (1), an upper mold (5) being installed inside the injection molding chamber (2) via a hydraulic rod (4), and a top plate (9) being installed at the bottom end of the lower mold (3), characterized in that: A shaping component (7) is installed inside the lower mold (3); The shaping component (7) includes a frame plate (71), the outer wall of the frame plate (71) is in contact with the inner wall of the lower mold (3), and the inner wall of the frame plate (71) is aligned with the inner side of the lower mold (3), a piston rod (72) is fixed at the four corners of the bottom of the frame plate (71), and a piston plate fixed at the bottom of the piston rod (72) slides in a sealed manner on the inner wall of the air cavity (73) opened in the lower mold (3); The upper mold (5) and the inner wall of the injection molding chamber (2) are installed with a pneumatic component (6), and the pneumatic component (6) is used to supply or extract air into the air cavity (73).

2. A shaping device for preventing automobile injection molded parts from warping and deformation according to claim 1, characterized in that: The pneumatic assembly (6) includes a pressure plate (61) and a lifting plate (62), wherein the pressure plate (61) is fixed on both sides of the upper mold (5), and the bottom surface of the pressure plate (61) is in contact with the top surface of the lifting plate (62). The second piston rod (63) fixed on the top of the lifting plate (62) is inserted into the bottom opening of the piston cylinder (64), and the piston plate on the top of the second piston rod (63) slides sealingly on the inner wall of the piston cylinder (64). The piston cylinder (64) is fixed on the inner wall of the injection chamber (2), and one side of the piston cylinder (64) is connected to the conduit (65) provided on the outer wall of the injection chamber (2). The two air cavities (73) on the same side of the lower mold (3) are also connected to the inner wall of the injection chamber (2) with a conduit (65), and the inner and outer conduits (65) are connected to each other.

3. A shaping device for preventing automobile injection molded parts from warping and deformation according to claim 2, characterized in that: The pneumatic assembly (6) further comprises a small motor (66) mounted on the top of the pressing plate (61), a T-shaped rod (67) mounted on the bottom of the small motor (66), and the T-shaped rod (67) passes through a rectangular opening formed on the lifting plate (62).

4. A shaping device for preventing automobile injection molded parts from warping and deformation according to claim 2, characterized in that: The bottom surfaces of the piston plates of the piston rod 1 (72) and the piston rod 2 (63) are both bonded with rubber pads (8), and the rubber pads (8) are respectively pressed and fitted with the inner bottom surfaces of the air cavity (73) and the piston cylinder (64) in the injection molding state.

5. A shaping device for preventing automobile injection molded parts from warping and deformation according to claim 2, characterized in that: A circular magnetic piece (69) is installed at the bottom of the piston cylinder (64), and the magnetic piece (69) can be adsorbed together with the lifting plate (62) made of metal.

6. A shaping device for preventing automobile injection molded parts from warping and deformation according to claim 2, characterized in that: Clamp sleeves (610) are welded on both sides of the inner wall of the injection molding chamber (2), and the piston cylinder (64) passes through the clamp sleeves (610) and is fixedly connected using bolts.

7. A shaping device for preventing automobile injection molded parts from warping and deformation according to claim 2, characterized in that: A convex-shaped slider (68) is fixed on one side of the lifting plate (62), and the slider (68) slides in a slideway provided on the inner wall of the injection molding chamber (2).

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