A mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product.

Abstract

This utility model provides a mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product. It relates to the field of mold technology and includes a movable side, a fixed side, an ejection mechanism, and a driving mechanism. The driving mechanism includes a pull plate, a rocker arm, a guide structure, and a rotating shaft. The pull plate is installed on the movable side, and the rocker arm is connected to the ejection mechanism via the rotating shaft. A guide pin guides the rocker arm. Both the pull plate and the rocker arm are equipped with hook structures. This design, by using a driving mechanism composed of a pull plate, rocker arm, guide structure, and rotating shaft, offers a simple and reliable structure with minimal installation space, reducing mold and injection molding costs. After the mold completes the ejection action, the rocker arm can disengage from the pull plate, allowing the movable side to continue performing larger mold opening actions, meeting the needs of a robotic arm to enter the mold and remove the product. The mold opening stroke is not affected by the mold thickness.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold that uses the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product. Background Technology

[0002] In inverted plastic molds, the product ejection mechanism is located on the fixed side of the injection molding machine, but the ejection device is located on the movable side. Currently, the commonly used drive methods for the mold product ejection mechanism are hydraulic cylinders and fixed-distance pull plates.

[0003] 1. Hydraulic cylinder: The ejection mechanism of the mold product is directly driven by the hydraulic cylinder to complete the ejection action;

[0004] Its drawbacks are: large installation space, slow action response speed, all-electric injection molding machines also require an additional machine-side hydraulic station, high energy consumption, high initial and maintenance costs, and the risk of mineral oil leakage polluting the workshop environment.

[0005] 2. Fixed-distance pull plate: The ejection mechanism of the molded product is driven by the mold opening force of the injection molding machine to complete the ejection action;

[0006] Its drawback is that the mold opening stroke is limited by the length of the pull plate and the thickness of the mold. When a larger mold opening distance is required, the length of the pull plate cannot be longer than the thickness of the mold, so the mold opening stroke cannot meet the requirements.

[0007] This application is made to address the shortcomings of the aforementioned product's ejection mechanism drive method. Utility Model Content

[0008] The purpose of this utility model is to provide a mold that uses the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product. The mold opening power drives the ejection mechanism of the molded product to complete the ejection action. It has a small installation space and a large mold opening stroke, which solves the problems of large installation space and mold opening stroke being affected by mold thickness in traditional drive mechanisms.

[0009] To address the aforementioned problems, this utility model provides a mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product. The mold includes a movable side, a fixed side, an ejection mechanism, and a driving mechanism. The driving mechanism includes a pull plate, a rocker arm, a guide structure, and a rotating shaft. The pull plate is mounted on the movable side, and the rocker arm is connected to the ejection mechanism via the rotating shaft. The guide pin guides the rocker arm. Both the pull plate and the rocker arm are equipped with hook structures. The mold is in an open state. In this open state, the movable side separates from the fixed side. When the pull plate contacts the hook structure of the rocker arm, it drives the ejection mechanism to perform an ejection action. During this process, the rocker arm rotates around the rotating shaft under the guidance of the guide structure. After the mold completes the ejection action, the rocker arm disengages from the pull plate, allowing the movable side to continue performing larger mold opening actions, thus enabling a robot arm to enter the mold and remove the product.

[0010] According to one embodiment of the present invention, the driving mechanism further includes a stop portion, which is used to contact the pull plate and play an auxiliary support role.

[0011] According to one embodiment of the present invention, the stop includes a stop block, which is installed on the fixed side by screws and pins to ensure that the stop block is flush with the hook head structure of the swing arm, and the stop block is located at the end of the pull plate where the hook head structure is provided.

[0012] According to one embodiment of the present invention, the guide structure includes a guide pin, the guide pin is installed on the fixed side, and the rocker arm is provided with a guide groove for accommodating the guide pin.

[0013] According to one embodiment of the present invention, the hook structure is provided with an arc-shaped contact surface, and other contact surfaces such as a flat contact surface can be selected.

[0014] According to one embodiment of the present invention, the mold further includes a reset rod, which is connected to the ejection mechanism. The mold is in a closed state. After the product is taken out, the molding machine performs a mold closing action, and the ejection mechanism applies pressure to the reset rod from the movable side to force it to reset, so as to proceed to the next molding cycle.

[0015] According to one embodiment of the present invention, the driving mechanism is provided in several groups.

[0016] Preferably, the drive mechanism is provided in four groups.

[0017] The beneficial effects of this utility model are that the drive mechanism consisting of a pull plate, a rocker arm, a guide structure, and a rotating shaft is simple, reliable, and requires little installation space, reducing mold and injection molding costs. After the mold completes the ejection action, the rocker arm can disengage from the pull plate, allowing the movable side to continue to complete a larger mold opening action, meeting the needs of the robot to enter the mold and remove the product. The mold opening stroke is not affected by the mold thickness, and the action response is fast, saving more than 3 seconds of molding cycle time, further reducing mold and injection molding costs. Moreover, the initial and maintenance costs are relatively low, reducing equipment investment and subsequent maintenance costs. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure of a mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product.

[0020] Figure 2 This is a schematic diagram of the drive mechanism in the mold closing state;

[0021] Figure 3 This is a schematic diagram showing the contact between the hook structure of the pull plate and the swing arm;

[0022] Figure 4 This is a schematic diagram showing the separation of the pull plate and the rocker arm in the mold-opening state.

[0023] Figure 5 This is a schematic diagram of the overall mold structure in Example 2, which utilizes the mold opening force of the injection molding machine to drive the ejection mechanism of the molded product. Detailed Implementation

[0024] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0025] Example 1:

[0026] A mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, such as... Figure 1 It includes a movable side plate 9, a fixed side plate 8, an ejection mechanism 7, and a drive mechanism. In this embodiment, the drive mechanism is preferably provided in four sets.

[0027] The drive mechanism includes a pull plate 1, a rocker arm 2, a guide structure 3, a rotating shaft 4, and a stop 5. The stop 5 includes a stop block. Both the pull plate 1 and the rocker arm 2 are equipped with hook structures, such as... Figure 3 The hook structure has an arc-shaped contact surface, forming a barbed structure, which ensures the stability when the two hook structures are in contact, and ensures that the ejection mechanism 7 can smoothly eject the product.

[0028] The pull plate 1 is fixed to the movable side 9 with screws and pins, and is ensured to be perpendicular to the movable side 9 plate.

[0029] The rocker arm 2 is fixed to the ejection mechanism 7 of the mold using the rotating shaft 4 and screws, ensuring that the rocker arm 2 can rotate on the rotating shaft 4 without jamming.

[0030] The guide structure 3 includes a guide pin, which is installed on the fixed side 8 to ensure that it is perpendicular to the end face of the plate on the fixed side 8. The swing rod 2 is provided with a guide groove for accommodating the guide pin, and the guide pin is used to guide the swing rod 2.

[0031] The stop block 5 is fixed to the fixed side 8 with screws and pins to ensure that it is flush with the hook part of the swing arm 2.

[0032] The mold has an open state and a closed state. After injection molding, it enters the open state, where the movable side 9 separates from the fixed side 8. The movable side 9 and the pull plate 1 move away from the fixed side 8 to perform the mold opening action, such as... Figure 3When the pull plate 1 contacts the hook structure of the rocker arm 2, it drives the ejection mechanism 7 to perform an ejection action. During this process, the rocker arm 2 rotates around the pivot 4 under the action of the guide structure 3. After the mold completes the ejection action, the rocker arm 2 disengages from the pull plate 1, so that the movable side 9 can continue to complete a larger mold opening action, which satisfies the robot arm to enter the mold and take out the product.

[0033] The mold opening stroke can be adjusted by adjusting the length of the pull plate 1, the swing rod 2, or the position of the hook structure.

[0034] Example 2:

[0035] Based on Example 1, such as Figure 5 In this embodiment, the mold is also provided with several reset rods 6. The reset rods 6 are connected to the ejection mechanism 7. After the product is taken out, the mold enters the mold closing state, the molding machine performs the mold closing action, and the ejection mechanism 7 of the mold product applies pressure to the reset rods 6 from the movable side 9 to force reset, and proceeds to the next molding cycle.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, characterized in that: The mold includes a movable side (9), a fixed side (8), an ejection mechanism (7), and a drive mechanism. The drive mechanism includes a pull plate (1), a rocker arm (2), a guide structure (3), and a rotating shaft (4). The pull plate (1) is installed on the movable side (9). The rocker arm (2) is connected to the ejection mechanism (7) through the rotating shaft (4). The guide structure (3) is used to guide the rocker arm (2). Both the pull plate (1) and the rocker arm (2) are provided with hook structures. The mold is in an open state. In the open state, the movable side (9) is separated from the fixed side (8). When the pull plate (1) contacts the hook structure of the rocker arm (2), it drives the ejection mechanism (7) to perform an ejection action. The rocker arm (2) rotates around the rotating shaft (4) under the action of the guide structure (3). After the mold completes the ejection action, the rocker arm (2) is separated from the pull plate (1).

2. The mold according to claim 1, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The drive mechanism also includes a stop (5), which is used to contact the pull plate (1) and play an auxiliary support role.

3. The mold according to claim 2, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The stop (5) includes a stop block, which is installed on the fixed side (8) and located at one end of the pull plate (1) where a hook structure is provided.

4. The mold according to claim 2, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The guide structure (3) includes a guide pin, which is installed on the fixed side (8), and the rocker arm (2) is provided with a guide groove for accommodating the guide pin.

5. The mold according to claim 1, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The hook structure is provided with an arc-shaped contact surface.

6. The mold according to any one of claims 1-4, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The mold also includes a reset rod (6), which is connected to the ejection mechanism (7).

7. The mold according to claim 1, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The drive mechanism is provided in several groups.

8. The mold according to claim 7, which utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product, is characterized in that: The drive mechanism is configured in four groups.

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