Injection mold convenient for rapid demolding of automotive upholstery

Abstract

The utility model relates to the technical field of mold demolding, in particular to an injection mold convenient for quick demolding of automotive upholstery, which comprises a mold frame, an injection molding frame used for injection molding of the mold is arranged in the mold frame, symmetrical telescopic rods are arranged in the injection molding frame, and a top plate used for extruding an injection molding part is arranged at the telescopic end of each telescopic rod. A motor drives a two-way screw to rotate, meanwhile, threaded blocks outside the two ends of the two-way screw can get close to each other, so that connecting blocks at the tops of the threaded blocks are driven to move, meanwhile, the other ends of the threaded blocks extrude upwards to drive a movable plate to move upwards, and when the movable plate moves upwards, an ejector rod and an extrusion rod can be driven to move upwards; and when the extrusion rod moves upwards, the piston is driven to move in the air cylinder, the extrusion rod is matched with the piston to work to blow the top plate, so that the injection molding part at the top of the top plate is slowly loosened, and the injection molding part is prevented from being directly pushed to be damaged.

Description

Technical Field

[0001] This utility model relates to the field of mold demolding technology, specifically to an injection mold that facilitates quick demolding of automotive interior parts. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, molds are tools used to create shaped objects. These tools are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of the object by changing the physical state of the material being molded. They are often referred to as the "mother of industry." In the processing of automotive interior plastic parts, the plastic raw material is added into the mold through an injection mold, and then injection molding is carried out. After molding, the plastic part needs to be demolded from the surface of the mold.

[0003] Chinese Patent Publication No. CN214026914U discloses an injection mold for easy demolding in the production of automotive interior plastic parts. The mold includes a fixed base and an upper mold. An injection tube is connected to the center of the top of the upper mold. The fixed base has an inner cavity with support seats bolted to both sides of the bottom of the cavity. Push rod cylinders are also bolted to both sides of the bottom of the cavity. This invention uses a stepper motor as a power source. Through the cooperation of a driving sprocket and a driven sprocket, a forward and reverse threaded rod can be rotated, thereby moving a movable plate. Through the cooperation of a first sliding groove and a first slider, the movable plate can drive a movable rod for rapid lifting and lowering adjustment. This movable rod, in turn, drives the lifting plate for lifting and lowering adjustment, facilitating rapid demolding of the molded automotive interior plastic parts. This reduces the labor intensity of workers, improves the production efficiency of the injection mold, and solves the problem of inconvenient demolding in the traditional production process of automotive interior plastic parts.

[0004] In the aforementioned apparatus, a connecting column is used to eject the molded injection part. However, in the initial stage of molding, the injection part is prone to sticking to the inner wall of the mold, and its overall structural stability is relatively low. At this time, directly ejecting the mold from the cavity can easily damage the injection part, thereby affecting the quality of the mold. Utility Model Content

[0005] To address the aforementioned issues, an injection mold is provided that facilitates rapid demolding of automotive interior parts. A motor drives a bidirectional screw to rotate, and simultaneously, threaded blocks at both ends of the bidirectional screw move closer together, causing the connecting block at the top of the threaded blocks to move. At the same time, the other end of the threaded block presses upward, causing a movable plate to move upward. This upward movement of the movable plate causes the ejector rod and extrusion rod to move upward. When the extrusion rod moves upward, it also causes the piston to move inside the air cylinder. By using the extrusion rod in conjunction with the piston, the top plate can be blown, gradually loosening the injection molded part on top of the top plate, thus avoiding direct pushing of the injection molded part and preventing damage.

[0006] To address the problems of existing technologies, this utility model provides an injection mold for quick demolding of automotive interior parts, comprising a mold frame, an injection frame for injection molding, symmetrical telescopic rods, a top plate for extruding the injection molded part at the telescopic end of the telescopic rods, a blowing component for loosening the injection molded part, and a driving component for moving a movable plate.

[0007] Preferably, the blowing assembly includes multiple air cylinders disposed inside the injection frame, and a movable plate is also movably disposed inside the mold frame. The top of the movable plate is provided with an extrusion rod that is the same number as the air cylinders, and one end of the extrusion rod extends into the interior of the air cylinder and is provided with a piston.

[0008] Preferably, the top of the movable plate is provided with symmetrical top rods, one end of which extends into the interior of the injection frame and is provided with an extrusion block for extruding the top plate.

[0009] Preferably, the drive assembly includes a motor disposed inside the mold frame, the output shaft of the motor being connected to a bidirectional screw via a coupling, one end of the bidirectional screw being rotatably connected to the inner wall of the mold frame, both ends of the bidirectional screw being threaded with threaded blocks, the top of the threaded blocks being rotatably provided with symmetrical connecting blocks, one end of the connecting blocks being rotatably connected to the bottom of the movable plate.

[0010] Preferably, a cover plate is movably provided on the top of the mold frame, and an injection tube for feeding is connected inside the cover plate.

[0011] Preferably, the cover plate is provided with handles on both sides for moving.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. The motor drives the bidirectional screw to rotate, and the threaded blocks on both ends of the bidirectional screw will move closer to each other, thereby moving the connecting block at the top of the threaded block. At the same time, the other end of the threaded block will press upward, thereby moving the movable plate upward. When the movable plate moves upward, it will drive the top rod and the extrusion rod to move upward. When the extrusion rod moves upward, it will also drive the piston to move inside the air cylinder. By using the extrusion rod in conjunction with the piston, the top plate can be blown, so that the injection molded part on the top plate is slowly loosened, avoiding direct pushing of the injection molded part, which would cause damage to the injection molded part.

[0014] 2. After the movable plate moves upward a certain distance, the extrusion block will also come into contact with the bottom of the top plate and extrude the top plate, thereby pushing the top plate and the injection molded part on top of it. Since the top plate is blown by the air cylinder before being pushed by the extrusion block, the extrusion block 14 can ensure the integrity of the injection molded part and avoid damage to the injection molded part when it is ejected. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an injection mold that facilitates quick demolding of automotive interior parts.

[0016] Figure 2 This is a bottom view schematic diagram of an injection mold that facilitates quick demolding of automotive interior parts.

[0017] Figure 3 This is a schematic diagram of the internal structure of the mold frame in an injection mold that facilitates quick demolding of automotive interior parts.

[0018] Figure 4 This is a schematic diagram of the internal structure of the injection frame in an injection mold that facilitates quick demolding of automotive interior parts.

[0019] Figure 5 This is a schematic diagram of the structure of a telescopic rod in an injection mold that facilitates quick demolding of automotive interior parts.

[0020] Figure 6 This is a schematic diagram of the structure of the extrusion block in an injection mold that facilitates quick demolding of automotive interior parts.

[0021] The following are the labels in the diagram: 1. Mold frame; 2. Cover plate; 3. Injection tube; 4. Injection frame; 5. Ejector rod; 6. Extrusion rod; 7. Movable plate; 8. Motor; 9. Threaded block; 10. Connecting block; 11. Double-acting screw; 12. Top plate; 13. Air cylinder; 14. Extrusion block; 15. Telescopic rod; 16. Piston. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 6 As shown, this utility model provides:

[0024] An injection mold for quick demolding of automotive interior parts includes a mold frame 1, an injection frame 4 for injection molding is provided inside the mold frame 1, symmetrical telescopic rods 15 are provided inside the injection frame 4, a top plate 12 for extruding the injection molded part is provided at the telescopic end of the telescopic rods 15, a blowing component for blowing the injection molded part is provided inside the injection frame 4, and a driving component for driving the movable plate 7 to move is also provided inside the mold frame 1.

[0025] By blowing the component, the molded part inside the injection frame 4 is gradually loosened. Then, the drive component kicks in, ejecting the molded part and slowly moving it outward. This avoids directly ejecting the molded part, effectively preventing damage that may occur during removal.

[0026] like Figure 5 As shown, the blowing assembly includes multiple air cylinders 13 disposed inside the injection frame 4. A movable plate 7 is also movably disposed inside the mold frame 1. The top of the movable plate 7 is provided with an extrusion rod 6, which is the same number as the air cylinders 13. One end of the extrusion rod 6 extends into the interior of the air cylinder 13 and is provided with a piston 16.

[0027] By using the piston 16 to move inside the air cylinder 13, and by using the extrusion rod 6 in conjunction with the piston 16, the top plate 12 can be blown, causing the injection molded part on the top of the top plate 12 to gradually loosen, making it easier for the subsequent ejection work.

[0028] like Figure 5 As shown, the top of the movable plate 7 is provided with symmetrical top rods 5, one end of which extends into the interior of the injection frame 4 and is provided with an extrusion block 14 for extruding the top plate 12.

[0029] The ejector rod 5 drives the movable plate 7 to move upward. After the movable plate 7 moves upward a certain distance, the extrusion block 14 will also come into contact with the bottom of the top plate 12 and extrude the top plate 12, thereby pushing the top plate 12 and the injection molded part on its top. Since the top plate 12 is blown by the air cylinder 13 before being pushed by the extrusion block 14, the extrusion block 14 can ensure the integrity of the injection molded part and avoid damage to the injection molded part during ejection.

[0030] like Figure 6 As shown, the drive assembly includes a motor 8 disposed inside the mold frame 1. The output shaft of the motor 8 is connected to a bidirectional screw 11 via a coupling. One end of the bidirectional screw 11 is rotatably connected to the inner wall of the mold frame 1. Both ends of the bidirectional screw 11 are threaded with threaded blocks 9. Symmetrical connecting blocks 10 are rotatably disposed on the top of the threaded blocks 9. One end of the connecting blocks 10 is rotatably connected to the bottom of the movable plate 7.

[0031] After the movable plate 7 moves upward a certain distance, the extrusion block 14 will also come into contact with the bottom of the top plate 12 and extrude the top plate 12, thereby pushing the top plate 12 and the injection molded part on its top. Since the top plate 12 is blown by the air cylinder 13 before being pushed by the extrusion block 14, the extrusion block 14 can ensure the integrity of the injection molded part and avoid damage to the injection molded part when it is ejected.

[0032] like Figure 1 and Figure 2 As shown, a cover plate 2 is movably installed on the top of the mold frame 1, and an injection tube 3 for feeding is connected inside the cover plate 2.

[0033] Injection material can be added into the injection frame 4 through the injection tube 3, which facilitates injection molding.

[0034] like Figure 1 As shown, handles for moving are provided on both sides of the cover plate 2.

[0035] The mold frame 1 can be easily moved by the handle.

[0036] Working principle: When an injection mold is needed, the cover plate 2 is first placed on top of the mold frame 1. Then, the injection material is fed into the injection frame 4 through the injection tube 3. When the injection is completed and the molded part needs to be removed, the motor 8 is started to drive the bidirectional screw 11 to rotate. At the same time, the threaded blocks 9 on both ends of the bidirectional screw 11 will move closer to each other, thereby driving the connecting block 10 on the top of the threaded block 9 to move. Meanwhile, the other end of the threaded block 9 will press upward, thereby driving the movable plate 7 to move upward. When the movable plate 7 moves upward, it will drive the ejector rod 5 and the extrusion rod 6 to move upward. When the extrusion rod 6 moves upward, it will also drive the piston. 16 moves inside the air cylinder 13. The extrusion rod 6 works in conjunction with the piston 16 to blow the top plate 12, causing the injection molded part on the top of the top plate 12 to loosen slowly, avoiding direct pushing of the injection molded part and causing damage to the injection molded part. When the movable plate 7 moves upward a certain distance, the extrusion block 14 will also come into contact with the bottom of the top plate 12 and squeeze the top plate 12, thereby pushing the top plate 12 and the injection molded part on its top. Since the top plate 12 has been blown by the air cylinder 13 before being pushed by the extrusion block 14, the push by the extrusion block 14 at this time can ensure the integrity of the injection molded part and avoid damage to the injection molded part when it is ejected.

[0037] The above embodiments merely illustrate one type of injection mold or several implementation methods for facilitating rapid demolding of automotive interior parts according to this utility model. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

[0038] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A injection mold for facilitating rapid demolding of an automotive interior part, characterized in that, The utility model provides a mould frame (1), the inside of mould frame (1) is provided with injection mould frame (4) for injection mould, the inside of injection mould frame (4) is provided with symmetrical telescopic rod (15), and the telescopic end of telescopic rod (15) is provided with top plate (12) for extruding injection part, the inside of injection mould frame (4) is provided with blowing assembly for blowing injection part loose, the inside of mould frame (1) is further provided with drive assembly for driving movable plate (7) to move, The blowing assembly includes a plurality of air cylinders (13) arranged inside the injection mold frame (4), and the inside of the mold frame (1) further movably arranged with a movable plate (7), the top of the movable plate (7) is provided with a plurality of extrusion rods (6) consistent with the number of air cylinders (13), one end of the extrusion rod (6) extends into the air cylinder (13) and is provided with a piston (16); The drive assembly includes a motor (8) arranged inside the mold frame (1), the output shaft of the motor (8) is connected with a bidirectional screw (11) through a shaft coupling, one end of the bidirectional screw (11) is rotatably connected with the inner wall of the mold frame (1), the outer ends of the bidirectional screw (11) are both provided with a threaded block (9) in screw thread, the top of the threaded block (9) is rotatably provided with a symmetrical connecting block (10), one end of the connecting block (10) is rotatably connected with the bottom of the movable plate (7).

2. The injection mold for facilitating quick demolding of an automotive interior part according to claim 1, wherein, The top of the movable plate (7) is provided with a symmetrical top rod (5), one end of the top rod (5) extends into the inside of the injection mold frame (4) and is provided with an extrusion block (14) for extruding the top plate (12).

3. The injection mold for facilitating quick demolding of an automotive interior part according to claim 1, wherein, The top of the mold frame (1) is movably provided with a cover plate (2), and the inside of the cover plate (2) is communicated with an injection pipe (3) for feeding.

4. The injection mold for facilitating quick demolding of an automotive interior part according to claim 3, wherein, The both sides of the cover plate (2) are provided with handles for moving.

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