Inverted buckle demolding injection mold

Abstract

The utility model discloses an injection mold for reverse demolding, and relates to the technical field of injection molds. The demolding device comprises a bottom plate, a lifting mechanism is fixedly arranged on the upper surface of the bottom plate, a demolding mechanism is arranged on one side of the lifting mechanism, the lifting mechanism comprises a lifting frame, the lower end of the lifting frame is fixedly connected with the upper surface of the bottom plate, a motor is arranged on the upper surface of the lifting frame, and a threaded rod is fixedly arranged at the output end of the motor. A lifting plate is arranged on the outer side of the threaded rod in a threaded and sleeved mode, two limiting rods which are symmetrically distributed are fixedly arranged on the lower inner wall of the lifting frame, the limiting rods are attached to the lifting plate in a sliding mode, and a lifting mold is fixedly arranged on the lower surface of the lifting plate. And the stability in the injection molding process is guaranteed, the mold lifting operation after injection molding is conveniently completed, and convenience is provided for the subsequent demolding step.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with an undercut release mechanism. Background Technology

[0002] Inverted demolding injection molds are suitable for plastic product manufacturing scenarios that require high precision, high efficiency, and the ability to automatically demold products. Especially when producing plastic products with complex structures or inverted designs, this mold can ensure that the product is smoothly and without damage separated from the mold.

[0003] However, existing technologies still have the following problems:

[0004] Existing injection molds are prone to defects during injection molding due to unstable mold movement, such as product deformation, air bubbles, and uneven filling. In addition, the mold requires complex operations to demold after injection molding.

[0005] To address the aforementioned problems, the inventors proposed an injection mold with an inverted demolding mechanism to solve these issues. Utility Model Content

[0006] In order to solve the problem of unstable mold movement, the purpose of this utility model is to provide an injection mold with inverted demolding.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: an injection mold for inverted demolding, comprising a base plate, a lifting mechanism fixedly provided on the upper surface of the base plate, a demolding mechanism provided on one side of the lifting mechanism, the lifting mechanism comprising a lifting frame, the lower end of the lifting frame being fixedly connected to the upper surface of the base plate, a motor provided on the upper surface of the lifting frame, a threaded rod fixedly provided at the output end of the motor, a lifting plate being threadedly sleeved on the outer side of the threaded rod, two symmetrically distributed limiting rods fixedly provided on the lower inner wall of the lifting frame, the limiting rods slidingly fitting with the lifting plate, and a lifting mold fixedly provided on the lower surface of the lifting plate.

[0008] Preferably, the demolding mechanism includes a positioning frame, one end of which is fixedly connected to one side of the lifting frame, an ejector rod is fixedly provided at the end of the positioning frame away from the lifting frame, an ejector plate is fixedly provided at the lower end of the ejector rod, an injection port and an air vent are provided on the upper surface of the lifting mold, and a mold sealing ring is fixedly provided on the upper surface of the base plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This utility model achieves precise vertical movement of the lifting mold through a lifting mechanism, which not only ensures stability during the injection molding process, but also facilitates the lifting operation of the mold after injection molding, thus providing convenience for the subsequent demolding steps. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the lifting mechanism of this utility model.

[0014] Figure 3 This is a cross-sectional schematic diagram of the demolding mechanism of this utility model.

[0015] In the diagram: 1. Base plate; 2. Lifting mechanism; 3. Demolding mechanism; 4. Fixed opening; 20. Motor; 21. Mounting bracket; 22. Threaded rod; 23. Lifting frame; 24. Limiting rod; 25. Limiting groove; 26. Limiting base; 27. Lifting plate; 28. Lifting mold; 30. Positioning frame; 31. Ejector rod; 32. Ejector hole; 33. Ejector groove; 34. Injection port; 35. Ejector plate; 36. Mold sealing ring; 37. Air vent. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figure 1-3As shown, this utility model provides an injection mold for inverted demolding, including a base plate 1. A lifting mechanism 2 is fixedly provided on the upper surface of the base plate 1, and a demolding mechanism 3 is provided on one side of the lifting mechanism 2. The lifting mechanism 2 includes a lifting frame 23, the lower end of which is fixedly connected to the upper surface of the base plate 1. A motor 20 is provided on the upper surface of the lifting frame 23, and a threaded rod 22 is fixedly provided at the output end of the motor 20. A lifting plate 27 is threadedly sleeved on the outer side of the threaded rod 22. Two symmetrically distributed limiting rods 24 are fixedly provided on the lower inner wall of the lifting frame 23. The limiting rods 24 slide against the lifting plate 27. A lifting mold 28 is fixedly provided on the lower surface of the lifting plate 27. Before the injection molding operation begins, the lifting mechanism 2 is in the initial state, and the lifting plate 27 and its lower... With the lifting mold 28 in its lowest position, after starting the motor 20, the output end of the motor 20 drives the threaded rod 22 to start rotating. Since there is a threaded fit between the threaded rod 22 and the lifting plate 27, and the lifting plate 27 slides against the limiting rod 24 on the lower inner wall of the lifting frame 23 through the limiting groove 25, the lifting plate 27 will move vertically up and down along the axis of the threaded rod 22. As the motor 20 continues to rotate, the lifting plate 27 drives the lifting mold 28 to rise smoothly, and works with the demolding mechanism 3 to eject the finished product inside. After completion, the motor 20 reverses, causing the lifting plate 27 and the lifting mold 28 to slowly descend to the initial position, preparing for the subsequent injection molding steps. The entire lifting process is stable and reliable, ensuring the smooth progress of the injection molding operation.

[0018] Multiple fixed openings 4 are provided on the outer side of the base plate 1. An installation bracket 21 is fixedly provided on the upper surface of the lifting frame 23. The upper surface of the installation bracket 21 is fixedly engaged with the motor 20. Two symmetrically distributed limiting grooves 25 are provided at one end of the lifting plate 27. The limiting grooves 25 slide against the limiting rod 24. A limiting base 26 is fixedly provided at one end of the base plate 1. The limiting base 26 is rotatably connected to the lower end of the threaded rod 22. The base plate 1 can limit and fix the mold through the fixed openings 4. The motor 20 can be fixed on the upper surface of the lifting frame 23 through the installation bracket 21. The limiting rod 24 can slide in the limiting groove 25 through the limiting groove 25. The limiting base 26 can limit the threaded rod 22.

[0019] The demolding mechanism 3 includes a positioning frame 30, one end of which is fixedly connected to one side of the lifting frame 23. An ejector rod 31 is fixedly mounted on the end of the positioning frame 30 away from the lifting frame 23. An ejector plate 35 is fixedly mounted on the lower end of the ejector rod 31. An injection port 34 and an air vent 37 are provided on the upper surface of the lifting mold 28. A mold sealing ring 36 is fixedly mounted on the upper surface of the base plate 1. When the lifting mold 28 needs to be demolded, through the cooperation of the demolding mechanism 3 and the lifting mechanism 2, the ejector rod 31, supported by the positioning frame 30, slides and fits against the upper surface of the lifting mold 28 through the ejector hole 32. As the lifting mold 28 moves upward, the ejector plate 35 can limit the finished product inside the lifting mold 28. Since the ejector groove 33 matches the shape of the ejector plate 35, the ejector plate 35 can smoothly separate the injection molded product from the inner wall of the lifting mold 28. At the same time, the mold sealing ring 36 on the upper surface of the base plate 1 ensures the sealing during the injection process and prevents leakage of injection material. After the ejector plate 35 completely pushes out the product, the demolding mechanism 3 works with the lifting mechanism 2 to reset, waiting for the next demolding operation. The entire demolding process is efficient and accurate, effectively improving production efficiency and product quality.

[0020] The upper inner wall of the lifting mold 28 is provided with an ejection groove 33, which fits in close contact with the ejection plate 35. The upper surface of the lifting mold 28 is provided with an ejection hole 32, which slides in close contact with the ejection rod 31. The shape of the ejection groove 33 matches that of the ejection plate 35. The ejection plate 35 can smoothly separate the injection-molded product from the inner wall of the lifting mold 28. At the same time, the mold sealing ring 36 on the upper surface of the base plate 1 ensures the sealing during the injection process and prevents leakage of injection material. The ejection rod 31 can slide and be limited within the ejection hole 32 through the ejection hole 32.

[0021] Working principle: Before the injection molding operation begins, the lifting mechanism 2 is in its initial state, with the lifting plate 27 and the lifting mold 28 below it in the lowest position. After the motor 20 is started, the output end of the motor 20 drives the threaded rod 22 to start rotating. Since there is a threaded fit between the threaded rod 22 and the lifting plate 27, and the lifting plate 27 slides against the limiting rod 24 on the lower inner wall of the lifting frame 23 through the limiting groove 25, the lifting plate 27 will move vertically up and down along the axis of the threaded rod 22. As the motor 20 continues to rotate, the lifting plate 27 drives the lifting mold 28 to rise smoothly, and works with the demolding mechanism 3 to eject the finished product inside. After completion, the motor 20 reverses, causing the lifting plate 27 and the lifting mold 28 to slowly descend to the initial position, preparing for the subsequent injection molding steps. The entire lifting process is stable and reliable, ensuring the smooth progress of the injection molding operation.

[0022] When the lifting mold 28 needs to be demolded, the ejector rod 31, supported by the positioning frame 30, slides and fits against the upper surface of the lifting mold 28 through the ejection hole 32. As the lifting mold 28 moves upward, the ejector plate 35 can limit the finished product inside the lifting mold 28. Since the ejector groove 33 and the ejector plate 35 match in shape, the ejector plate 35 can smoothly separate the injection-molded product from the inner wall of the lifting mold 28. At the same time, the mold sealing ring 36 on the upper surface of the base plate 1 ensures the sealing during the injection process and prevents leakage of injection material. After the ejector plate 35 completely pushes out the product, the demolding mechanism 3 and the lifting mechanism 2 reset, waiting for the next demolding operation. The whole demolding process is efficient and accurate, effectively improving production efficiency and product quality.

[0023] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An injection mould for inverted-draw demoulding comprising a base plate (1), characterised in that: The upper surface of the bottom plate (1) is fixedly provided with a lifting mechanism (2), one side of the lifting mechanism (2) is provided with a demolding mechanism (3); The lifting mechanism (2) comprises a lifting frame (23), the lower end of the lifting frame (23) is fixedly connected with the upper surface of the bottom plate (1), the upper surface of the lifting frame (23) is provided with a motor (20), the output end of the motor (20) is fixedly provided with a threaded rod (22), the outer side of the threaded rod (22) is threadedly sleeved with a lifting plate (27), the lower inner wall of the lifting frame (23) is fixedly provided with two limit rods (24) which are symmetrically distributed, the limit rods (24) are in sliding fit with the lifting plate (27), and the lower surface of the lifting plate (27) is fixedly provided with a lifting mold (28).

2. An injection mold for inverted part ejection as defined in claim 1, wherein, The demolding mechanism (3) comprises a positioning frame (30), one end of the positioning frame (30) is fixedly connected with one side of the lifting frame (23), the end, away from the lifting frame (23), of the positioning frame (30) is fixedly provided with an ejection rod (31), the lower end of the ejection rod (31) is fixedly provided with an ejection plate (35), the upper surface of the lifting mold (28) is provided with an injection port (34) and an air outlet (37), and the upper surface of the bottom plate (1) is fixedly provided with a mold sealing ring (36).

3. An injection mold for inverted part ejection as defined in claim 1, wherein, A plurality of fixing openings (4) are formed in the outer side of the bottom plate (1).

4. A counter-draw demolding injection mold as claimed in claim 1, characterized in that, The upper surface of the lifting frame (23) is fixedly provided with a mounting frame (21), and the upper surface of the mounting frame (21) is fixedly connected with the motor (20).

5. An injection mold for inverted part ejection as defined in claim 1, wherein, One end of the lifting plate (27) is provided with two limit grooves (25) which are symmetrically distributed, and the limit grooves (25) are in sliding fit with the limit rods (24).

6. An injection mold for inverted part ejection as defined in claim 1, wherein, One end of the bottom plate (1) is fixedly provided with a limit base (26), and the limit base (26) is rotatably connected with the lower end of the threaded rod (22).

7. An injection mold for inverted part ejection as defined in claim 1, wherein, The upper inner wall of the lifting mold (28) is provided with an ejection groove (33), and the ejection groove (33) is in fit with the ejection plate (35).

8. A counter-draw demolding injection mold as defined in claim 1, wherein, The upper surface of the lifting mold (28) is provided with an ejection hole (32), and the ejection hole (32) is in sliding fit with the ejection rod (31).

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