Injection molding equipment for processing lens lamp shell

Abstract

The utility model relates to a kind of injection molding equipment for lens lamp shell processing, including machine table, injection mechanism and forming mechanism are equipped on machine table, forming mechanism includes the head plate, two plates and tail plate opposite each other, for installing mould between head plate and two plates, machine hinge component is equipped between tail plate and two plates, machine hinge component includes folding arm and support arm, folding arm one end is rotatably connected to tail plate, one end is rotatably connected to two plates, support arm one end is rotatably connected to folding arm, the side of tail plate is equipped with pneumatic cylinder, pneumatic cylinder is used to drive two plates to move, when two plates move towards head plate, folding arm unfolds to make mould between head plate and two plates to close, the both sides of forming mechanism are equipped with mould locking mechanism, mould locking mechanism cooperates with folding arm, to provide mould locking force for mould between head plate and two plates.The utility model has the following advantages and effects: after mould closing, can exert propulsive force, to make sufficient mould locking force between mould, ensure the injection quality of whole.

Description

Technical Field

[0001] This utility model relates to the field of lens processing technology, specifically to an injection molding equipment for processing lens lamp housings. Background Technology

[0002] A lens housing is a component used to support a lens so that it faces the light source, allowing the light to be focused and produce a light spot. Lens housings are generally made of plastic and are injection molded.

[0003] For example, Chinese patent document CN221365702U discloses a rapid cooling device for a plastic injection molding machine, which includes a molding die and an injection mold; the molding die and the injection mold are arranged opposite to each other, and the molding die and the injection mold are respectively provided with a molding die cooling cavity and an injection mold cooling cavity on their inner sides; in this utility model, the molding die and the injection mold are combined to form a mold cavity for product injection, and the injection molding machine injects material into the mold cavity through an injection pipe.

[0004] In the above technical solution, after injection molding, cold water is delivered to the cooling chambers of the molding mold and the injection mold through water injection pipes, and then output from the return water pipe, thus forming a cooling circuit and achieving rapid cooling and molding. Furthermore, during mold closing, the cylinder ejection drives the folding arm to unfold, pushing the lower mold towards the upper mold for mold closing. After mold closing, because the cylinder is depressurized and in a released state, the lower mold will retract to a certain extent, preventing sufficient clamping force between the lower and upper molds. This can cause air bubbles or missing material in the injection molded product, thus affecting the overall injection molding quality. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an injection molding equipment for lens lamp housing processing, which can apply a pushing force after the mold is closed to generate sufficient clamping force between the molds and ensure the overall injection molding quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection molding equipment for lens lamp housing processing, comprising a machine base, an injection mechanism and a molding mechanism on the machine base, the molding mechanism comprising a head plate, a second plate and a tail plate opposite to each other in a direction away from the injection mechanism, a mold being installed between the head plate and the second plate, a mechanical hinge assembly being provided between the tail plate and the second plate, the mechanical hinge assembly comprising a folding arm and a support arm, one end of the folding arm being rotatably connected to the tail plate and the other end being rotatably connected to the second plate, one end of the support arm being rotatably connected to the folding arm, a cylinder being provided on one side of the tail plate, the cylinder being used to drive the second plate to move, when the second plate moves toward the head plate, the folding arm unfolds to close the mold between the head plate and the second plate, characterized in that, a mold locking mechanism is provided on both sides of the molding mechanism, the mold locking mechanism cooperating with the folding arm to provide a mold locking force for the mold between the head plate and the second plate.

[0007] The present invention is further configured such that: the mold locking mechanism includes a rotatable connecting shaft, a drive block is fixedly fitted on the outer periphery of the connecting shaft, the drive block is provided with a cam that is eccentrically connected to the connecting shaft, the folding arm is provided with a coupling arc groove on the side facing the drive block, the cam rotates through the connecting shaft to gradually couple with the coupling arc groove, providing axial thrust to the folding arm to drive the second plate to move toward the head plate, so that the mold between the head plate and the second plate is tightly pressed together.

[0008] The present invention is further configured such that: a frame is mounted on the machine base, and the frame is connected to two sets of transmission components on opposite sides; the transmission components include two lead screws and guide rods spaced apart from each other; the two ends of the lead screws are rotatably connected to the frame, and the two ends of the guide rods are fixed to the frame; connecting seats are fitted on the outer periphery of the lead screws and guide rods, respectively forming threaded and sliding engagements with the lead screws and guide rods; a first drive motor connected to the lead screws is provided on one side of the frame, and the first drive motor is used to drive the lead screws to rotate, thereby driving the drive block to move along the setting direction of the forming mechanism.

[0009] The present invention is further configured such that: a connecting flange is fixed on the connecting seat, the two ends of the connecting shaft are respectively rotatably connected to the connecting flanges on both sides, and a second drive motor is provided on one side of the connecting shaft, the second drive motor being used to drive the connecting shaft to rotate.

[0010] The present invention is further configured such that: the machine base is provided with an opening, and one end of the frame can extend downward through the opening.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] By setting clamping mechanisms on the upper and lower sides of the molding mechanism, after the cylinder drives the two plates to initially close the mold, the clamping mechanism generates axial thrust through eccentric action, pushing the two plates to move further towards the head plate, so that the mold between the two plates and the head plate can be further pressed together, thereby enhancing the clamping force of the mold. Therefore, it solves the technical problem in the existing technology where the structure of the mold closing by the cylinder drives the mold to retract to a certain extent and cannot be tightly pressed together, resulting in insufficient clamping force between the molds, thus ensuring the overall injection molding quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a side view of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram showing the cooperation relationship between the mechanical hinge assembly and the drive block in this utility model. Detailed Implementation

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

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] like Figures 1 to 3As shown, this utility model discloses an injection molding equipment for lens lamp housing processing, including a machine base 1. The machine base 1 is equipped with an injection mechanism 2 and a molding mechanism. The injection mechanism 2 consists of an injection screw, a feed barrel communicating with the injection screw, and a heating coil fitted around the outer periphery of the injection screw. These are all existing structures, so they will not be described in detail. The molding mechanism is arranged with a head plate 31, a second plate 32, and a tail plate 33 in sequence along the direction away from the injection mechanism 2. A mold is installed between the head plate 31 and the second plate 32, that is, the upper mold is installed on the head plate 31, and the lower mold is installed on the second plate 32. A mechanical hinge assembly is provided between the tail plate 33 and the second plate 32. The mechanical hinge assembly includes a folding arm 41 and a support arm 42. One end of the folding arm 41 is rotatably connected to the tail plate 33 through a hinge shaft, and the other end is rotatably connected to the second plate 32 through a hinge shaft. One end of the support arm 42 is hinged to the folding arm 41. A cylinder 5 is installed on one side of the tail plate 33. The piston rod of the cylinder 5 is connected to the support arm 42. The piston rod of the cylinder 5 moves the support arm 42 by extending and retracting, thereby causing the folding arm 41 to unfold or fold, which in turn moves the second plate 32. When the second plate 32 moves towards the head plate 31, the mold can be closed. During the mold closing process, the folding arm 41 unfolds, and the support arm 42 provides support force to ensure that the second plate 32 moves smoothly.

[0019] To ensure sufficient clamping force after the mold between the head plate 31 and the second plate 32 is closed, symmetrical clamping mechanisms are set on the upper and lower sides of the molding mechanism to ensure uniform distribution of the clamping force. The clamping mechanism includes a connecting shaft 61, with a drive block 62 fixedly mounted on the outer periphery of the connecting shaft 61. The drive block 62 is provided with an eccentrically set cam 621, and a coupling arc groove 411 is opened on the side of the folding arm 41 facing the drive block 62. When the cylinder 5 drives the second plate 32 to initially close the mold, the cylinder 5 will depressurize, causing the second plate 32 to retract to a certain extent, making it impossible for the mold between the second plate 32 and the head plate 31 to be tightly pressed. At this time, by driving the connecting shaft 61 to rotate, the drive block 62 and the cam 621 will rotate. The cam 621 gradually embeds into the coupling arc groove 411 of the folding arm 41, generating axial thrust through eccentric action, pushing the second plate 32 further towards the head plate 31, so that the mold between the second plate 32 and the head plate 31 can be further pressed, thereby enhancing the clamping force of the mold. This design can compensate for the insufficient clamping force of traditional cylinder 5, thereby ensuring the overall injection molding quality.

[0020] Furthermore, since there are various types of molds installed between the head plate 31 and the second plate 32, and the heights of the molds of different types are also different, the distance between the head plate 31 and the second plate 32 needs to be adjusted when installing different types of molds. Therefore, in order to ensure that the cam 621 can couple with the coupling arc groove 411 when installing different types of molds, the drive block 62 needs to be moved accordingly.

[0021] Therefore, in this embodiment, a frame 7 is further installed on the machine base 1. Transmission components are provided on both sides of the frame 7. The transmission components include two parallel lead screws 81 and guide rods 82. The two ends of the lead screws 81 are rotatably connected to the frame 7 via bearing seats, and the two ends of the guide rods 82 are fixed to the frame 7. Connecting seats 83 are fitted around the outer periphery of both the lead screws 81 and the guide rods 82, forming threaded and sliding engagements respectively. A first drive motor 84 is installed on the outside of the frame 7, driving the lead screws 81 to rotate and move the drive block 62 along the direction of the molding mechanism, thereby adjusting the horizontal position of the mold-locking mechanism. This allows for adaptation to different types of molds and expands the scope of application.

[0022] In addition, the structure for the connecting shaft 61 to rotate is as follows: a flange 831 is fixedly connected to the connecting seat 83; the end of the connecting shaft 61 is rotatably connected to the connecting flanges 831 on both sides through a bearing; one end of the connecting shaft 61 is connected to the second drive motor 9 through a coupling to drive the connecting shaft 61 to rotate, thereby driving the cam 621 to rotate.

[0023] Furthermore, in this embodiment, since the clamping mechanism is located on the upper and lower sides of the molding mechanism, in order to facilitate the installation of the lower clamping mechanism, an opening 101 is made on the machine base 1 so that the bottom of the frame 7 can extend downward through the opening 101. This facilitates the installation of the lower clamping mechanism and improves the overall assembly convenience of the clamping mechanism.

[0024] The equipment's workflow is as follows: First, cylinder 5 drives the second platen 32 to move towards the head platen 31, and the folding arm 41 unfolds to initially close the mold; then, the second drive motor 9 starts, driving the cam 621 to rotate and embed into the coupling arc groove 411, and through eccentric thrust, the mold between the second platen 32 and the head platen 31 is pressed again, increasing the clamping force on the mold; after injection molding is completed, the cam 621 rotates to disengage from the coupling arc groove 411, and cylinder 5 retracts to drive the folding arm 41 to fold, separating the mold.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An injection molding equipment for processing lens lamp housings, comprising a machine base, wherein the machine base is provided with an injection mechanism and a molding mechanism, the molding mechanism including a head plate, a second plate, and a tail plate opposite to each other in a direction away from the injection mechanism, a mold being mounted between the head plate and the second plate, a mechanical hinge assembly being provided between the tail plate and the second plate, the mechanical hinge assembly including a folding arm and a support arm, one end of the folding arm being rotatably connected to the tail plate and the other end being rotatably connected to the second plate, one end of the support arm being rotatably connected to the folding arm, a cylinder being provided on one side of the tail plate, the cylinder being used to drive the second plate to move, and when the second plate moves toward the head plate, the folding arm unfolds to close the mold between the head plate and the second plate, characterized in that… The molding mechanism is provided with a mold-locking mechanism on both sides. The mold-locking mechanism cooperates with the folding arm to provide a mold-locking force between the head plate and the second plate.

2. The injection molding equipment for processing lens lamp housings according to claim 1, characterized in that, The mold-locking mechanism includes a rotatable connecting shaft, a drive block is fixedly fitted around the outer periphery of the connecting shaft, the drive block is provided with a cam that is eccentrically connected to the connecting shaft, the folding arm is provided with a coupling arc groove on the side facing the drive block, the cam rotates through the connecting shaft to gradually couple with the coupling arc groove, providing axial thrust to the folding arm to drive the second plate to move toward the head plate, so that the mold between the head plate and the second plate is tightly pressed together.

3. The injection molding equipment for processing lens lamp housings according to claim 2, characterized in that, A frame is mounted on the machine base, and the frame is connected to two sets of transmission components on opposite sides. The transmission components include two lead screws and guide rods spaced apart from each other. The two ends of the lead screws are rotatably connected to the frame, and the two ends of the guide rods are fixed to the frame. Connecting seats are fitted on the outer periphery of the lead screws and guide rods, respectively forming threaded and sliding engagements with the lead screws and guide rods. A first drive motor connected to the lead screws is provided on one side of the frame. The first drive motor is used to drive the lead screws to rotate, thereby driving the drive block to move along the setting direction of the forming mechanism.

4. The injection molding equipment for processing lens lamp housings according to claim 3, characterized in that, The connecting seat is fixed with a connecting flange, and the two ends of the connecting shaft are rotatably connected to the connecting flanges on both sides. A second drive motor is provided on one side of the connecting shaft, and the second drive motor is used to drive the connecting shaft to rotate.

5. The injection molding equipment for processing lens lamp housings according to claim 3, characterized in that, The machine base has an opening, and one end of the frame can extend downward through the opening.

Images