A positioning mold for the opening of a reflector bowl

Abstract

This utility model relates to the field of machining technology, and in particular to a positioning mold for opening holes in automotive reflectors. It includes a main mold plate and an electronic level fixed horizontally on the main mold plate. The main mold plate has openings adapted to the position of the headlight mounting rod. The main mold plate also has a positioning post passing through a reference hole at the bottom of the reflector and coaxial with the optical axis of the reflector. A fastener is fitted onto the positioning post, passing through the bottom of the reflector and positioned between the main mold plate and the reflector. A first chuck is fitted onto the fastener to limit and fix the bottom of the reflector. A locking nut is also fitted onto the fastener to lock the reflector in place. In this utility model, through optical axis reference transmission and closed-loop control of the electronic level, the hole position can be perfectly matched with the headlight mounting rod, effectively reducing the error in the angle between the opening axis and the optical axis, and avoiding optical path misalignment caused by assembly stress.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a hole positioning mold for automotive reflectors. Background Technology

[0002] In the manufacturing of automotive reflectors, mounting holes for fixing the light source module need to be machined at specific locations on their curved surfaces. These holes must meet two core requirements: first, the center axis of the opening must be strictly designed to align with the optical axis of the reflector to ensure that the light emitted by the light source module can form a compliant light pattern; second, the coordinates of the hole position must match the mounting rod position of the lamp body to avoid assembly stress distorting the light path.

[0003] However, in practice, it has been found that the current mainstream processing methods have the problem of not being able to effectively transfer optical references. For example, as shown in a drilling jig with patent number "CN201720512903.7", this traditional drilling jig (such as a three-jaw first chuck or vacuum suction cup) is fixed only by the edge of the bowl, which makes the spatial angle of the hole position completely dependent on the operator's experience to adjust, resulting in a high hole opening error rate and causing the finished product to have blurred cut-off lines or excessive glare. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing hole-making method for automotive reflectors has a high error rate due to the reliance on operator experience to adjust the spatial angle of the hole, resulting in blurred cut-off lines or excessive glare in the finished product. Therefore, this invention proposes a hole-positioning mold for automotive reflectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design a positioning mold for opening holes on automotive reflectors, including a mold body plate 1 and an electronic level 2 horizontally fixed on the mold body plate 1. The mold body plate 1 is provided with an opening 11 adapted to the position of the headlight fixing rod. The mold body plate 1 is also provided with a positioning post 12 that passes through the reference hole at the bottom of the reflector and is coaxial with the optical axis of the reflector. A fastener 13 that passes through the bottom of the reflector and is located between the mold body plate 1 and the reflector is fitted on the positioning post 12. A first chuck 14 that limits and fixes the bottom of the reflector is fitted on the fastener 13. A locking nut 15 that locks the reflector is also provided on the fastener 13.

[0006] Furthermore, the opening 11 is embedded with a detachable guide post 16, and the center of the guide post 16 is provided with a first through hole 161 aligned with the central axis of the opening 11.

[0007] Furthermore, the fastener 13 is a cylindrical bolt, and the bottom of the fastener 13 is provided with a second chuck 131 for limiting and fixing the bottom of the reflector bowl. The center of the fastener 13 is provided with a second through hole 132 aligned with the central axis of the positioning post 12 for the positioning post 12 to pass through.

[0008] Furthermore, the main body plate 1 of the mold is recessed with a mounting groove 17 for assembling the electronic level 2 therein.

[0009] Furthermore, the outer edge of the first chuck 14 has a plurality of protrusions 141 arranged at equal angles, or the outer edge of the first chuck 14 has a single protrusion 141.

[0010] The present invention provides a positioning mold for opening holes in automotive reflectors, which has the following advantages: In this invention, the optical axis reference transmission and electronic level closed-loop control effectively reduce the angle error between the opening axis and the optical axis, eliminating the problem of light distortion (such as blurred cutoff line) at its source. Furthermore, the coordinate association design between the positioning post and the opening position ensures a perfect match between the hole position and the headlight mounting rod, preventing light path misalignment caused by assembly stress and thus guaranteeing the optical performance of the headlight.

[0011] Secondly, in this utility model, the application uses a triple technology coupling of "mechanical coaxial constraint + electronic feedback leveling + elastic stress distribution" to transform the invisible optical axis into an adjustable physical plane, solving the problem of reference transfer. At the same time, it can also compensate for reference drift caused by processing vibration in real time, breaking through the bottleneck of dynamic stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an opening positioning mold for automotive reflectors proposed in this utility model; Figure 2 This is an exploded structural diagram of an opening positioning mold for an automotive reflector bowl proposed in this utility model; Figure 3 This is an exploded view of another angle of the opening positioning mold for automotive reflectors proposed in this utility model.

[0013] In the figure: 1. Mold body plate; 11. Opening position; 12. Positioning pin; 13. Fastener; 131. Suction cup; 132. Second through hole; 14. First chuck; 141. Protrusion; 15. Locking nut; 16. Guide pin; 161. First through hole; 17. Mounting groove; 2. Electronic level. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1 , Figure 2 and Figure 3 As shown, a positioning mold for opening holes in automotive reflectors includes a main mold plate 1 and an electronic level 2 horizontally fixed to the main mold plate 1, capable of real-time monitoring the horizontal state of the main mold plate 1. The main mold plate 1 serves as a reference bearing platform for establishing a rigid working surface perpendicular to the reflector's optical axis. The main mold plate 1 has openings 11 adapted to the position of the headlight mounting rod to precisely guide the drill bit to drill at a preset position on the reflector's curved surface. The main mold plate 1 also has a positioning post 12 passing through a reference hole at the bottom of the reflector and coaxial with the reflector's optical axis. This post is inserted into the reference hole at the bottom of the reflector to forcibly establish a coaxial relationship with the optical axis. The positioning post 12 is fitted with a device that passes through the bottom of the reflector and... Fastener 13 is installed between the main body plate 1 of the mold and the reflector bowl. The main body plate 1 of the mold is vertically fixed to the positioning post 12. It can convert the optical axis of the reflector bowl into the normal reference of the plate plane, so that the spatial angle of the opening position 11 can be directly defined by the plate plane. The fastener 13 is fitted with a first chuck 14 to limit and fix the bottom of the reflector bowl. The fastener 13 is also equipped with a locking nut 15 to lock the reflector bowl. The fastener 13 and the locking nut 15 lock the reflector bowl in a distributed manner, which can avoid local stress damage. At the same time, the first chuck 14 can be a spring steel split structure. When the locking nut 15 is screwed, it deforms radially and adapts to fit the bottom curved surface of the reflector bowl to achieve high rigidity and damage-free fixation.

[0016] In this utility model, the application achieves high-precision drilling of curved surfaces through a four-step closed loop: "optical axis reference reconstruction → dynamic leveling → distributed locking → precision guide drilling". Specifically, ① Optical axis reference reconstruction: the positioning post 12 is inserted into the reference hole at the bottom of the reflector bowl to forcibly establish the mechanical coaxial relationship between the mold coordinate system and the optical axis; ② Dynamic leveling: at this time, the electronic level 2 can monitor the tilt angle of the mold body plate 1 in real time, and make the plate plane absolutely perpendicular to the optical axis by finely adjusting the torque distribution of the locking nut 15; ③ Distributed locking: the first chuck 14 can undergo radial elastic deformation under the screwing of the locking nut 15, and the segmented tooth pattern adaptively fits the bottom curved surface of the reflector bowl to form a uniformly distributed locking force; ④ Precision guide drilling: finally, the drill bit is forcibly guided by the preset tilt angle guide sleeve of the opening position 11 to output the installation hole on the curved surface of the reflector bowl with the accuracy of the spatial position and axis angle reaching the preset standard.

[0017] In detail, in this embodiment, the fastener 13 and the first chuck 14 can be sequentially fitted onto the positioning post 12 so that the fastener 13 and the first chuck 14 are installed at corresponding positions on the mold body plate 1. Then, the car reflector can be placed on the mold body plate 1, so that the fastener 13 fitted onto the positioning post 12 passes through the reference hole at the bottom of the reflector, so that the fastener 13 is between the mold body plate 1 and the reflector, and the first chuck 14 can contact the bottom of the reflector. The shape and size of the first chuck 14 match the bottom structure of the reflector, which can limit the bottom of the reflector and prevent the reflector from moving in the direction perpendicular to the mold body plate 1. At the same time, since the positioning post 12 is coaxial with the optical axis of the reflector, when the positioning post 12 accurately passes through the reference hole, the position of the reflector in the horizontal plane is accurately determined, and the optical axis of the reflector is kept consistent with the optical axis of the mold and the LED car light to be installed later. This process utilizes the mating relationship between the positioning pin and the reference hole to achieve a unique and accurate positioning of the reflector bowl on the mold. Then, the locking nut 15 can be screwed onto the fastener 13 and gradually tightened. As the locking nut 15 tightens, it applies downward pressure to the first chuck 14, which then transmits the pressure to the bottom of the reflector bowl, pressing it firmly against the mold body plate 1. This ensures the reflector bowl is securely fixed on the mold, preventing it from shaking or shifting during subsequent hole-opening operations. Simultaneously, during the tightening of the locking nut 15, the display data of the electronic level 2 can be constantly observed. If angular deviation occurs, timely adjustments can be made to ensure the entire hole-opening positioning process is performed on a horizontal reference. Finally, after the reflector bowl is accurately positioned and securely fixed, a suitable hole-opening tool, such as a drill bit, can be used, guided by the hole position 11 on the mold body plate 1 that matches the headlight fixing rod position, to open a hole in the reflector bowl. Because the position and size of the opening 11 are precisely designed to correspond to the LED car light mounting rod position, it is possible to make an accurate hole for installing the LED car light mounting rod on the reflector bowl.

[0018] More specifically, in this embodiment, the present application effectively reduces the angle error between the opening axis and the optical axis through optical axis reference transmission and closed-loop control of the electronic level, eliminating the problem of optical distortion (such as blurred cutoff line) at its source. Furthermore, the coordinate association design between the positioning post 12 and the opening position 11 ensures a perfect match between the hole position and the headlight mounting rod, preventing optical path misalignment caused by assembly stress, thereby guaranteeing the optical performance of the headlight.

[0019] More specifically, in this embodiment, this application uses a triple technology coupling of "mechanical coaxial constraint + electronic feedback leveling + elastic stress distribution" to transform the invisible optical axis into an adjustable physical plane, solving the problem of reference transfer. At the same time, it can also compensate for reference drift caused by processing vibration in real time, breaking through the bottleneck of dynamic stability.

[0020] Furthermore, in this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the opening position 11 is embedded with a detachable guide post 16, which provides more precise and stable guidance for drilling tools such as drill bits during the drilling operation. The center of the guide post 16 has a first through hole 161 aligned with the central axis of the opening position 11, ensuring that the drilling tool can drill along the accurate center of the opening position 11, avoiding inaccurate drilling position due to guide deviation, and greatly improving the drilling accuracy. Furthermore, when different specifications of reflector bowls need to be drilled, only the appropriate guide post 16 needs to be replaced, without replacing the entire mold, reducing production costs and preparation time. At the same time, the guide post 16, embedded in the opening position 11, ensures its relative positional accuracy with the opening position 11, providing a stable guiding reference for the drilling tool.

[0021] Furthermore, in this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the fastener 13 is a cylindrical bolt that can be easily used with the mold body plate 1 and the locking nut 15. The bottom of the fastener 13 is provided with a second chuck 131 for limiting and fixing the bottom of the reflector bowl. Its shape matches the bottom structure of the reflector bowl and can well accommodate and contact the reflector bowl. When the reflector bowl is installed on the fastener 13, the inner side of the bottom of the reflector bowl will be limited and fixed on the second chuck 131 to ensure that the reflector bowl can be quickly and accurately aligned in the initial stage of installation. Subsequently, the first chuck 14 on the outer side of the reflector bowl can provide secondary limiting and fixing of the reflector bowl to provide constraint from the outside of the reflector bowl and form an "inner and outer clamping" force with the second chuck 131 acting from the bottom, together wrapping the specific structure of the reflector bowl, ultimately eliminating all degrees of freedom, preventing the reflector bowl from loosening or radially moving in a vibration environment, and ensuring its stability. The fastener 13 has a second through hole 132 at its center, which is aligned with the central axis of the positioning post 12 and allows the positioning post 12 to pass through it. This ensures that the positioning post 12 can pass smoothly through the fastener 13 and that the accuracy of the reflector bowl positioning is not affected by the installation of the fastener 13.

[0022] Furthermore, in this embodiment, as Figure 3As shown, the main body plate 1 of the mold has a recessed mounting groove 17 for assembling the electronic level 2. During the use of the mold, this ensures that the electronic level 2 is always installed in the same position, avoiding deviations in measurement results due to different placement of the electronic level 2, thus guaranteeing the accuracy of level measurement. At the same time, the recessed mounting groove 17 allows the electronic level 2 to be embedded inside the main body plate 1 of the mold without increasing the horizontal dimensions of the mold, making the mold structure more compact, saving space, and facilitating mold storage and transportation.

[0023] Furthermore, in this embodiment, the outer edge of the first chuck 14 has multiple protrusions 141 arranged at equal angles, or the outer edge of the first chuck 14 has a single protrusion 141. Different specifications of reflectors have different requirements for the rotation angle and position of the first chuck 14 during installation and fixing. The single or multiple protrusions 141 allow the operator to adjust the position of the first chuck 14 more flexibly according to actual needs to meet diverse production requirements. For example, when the reflector is adapted to the H7 model of the car light, a first chuck 14 with a single protrusion 141 can be used. If the reflector is adapted to the H4 or HB3 / 4 model of the car light, a first chuck 14 with multiple protrusions 141 arranged at equal angles can be used. This allows the first chuck 14 to be applied to the production of molds of different specifications and types, improving the flexibility and adaptability of the mold and reducing the cost for enterprises to equip different molds with dedicated first chucks 14.

[0024] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An opening positioning mold for use on a reflector bowl for an automobile, characterized by, The system includes a mold body plate (1) and an electronic level (2) horizontally fixed on the mold body plate (1). The mold body plate (1) is provided with an opening (11) that matches the position of the headlight fixing rod. The mold body plate (1) is also provided with a positioning post (12) that passes through the reference hole at the bottom of the reflector and is coaxial with the optical axis of the reflector. The positioning post (12) is fitted with a fastener (13) that passes through the bottom of the reflector and is located between the mold body plate (1) and the reflector. The fastener (13) is fitted with a first chuck (14) that limits and fixes the bottom of the reflector. The fastener (13) is also equipped with a locking nut (15) that locks the reflector.

2. A hole positioning mold for use on a reflector bowl for an automotive vehicle as defined in claim 1 wherein: The opening (11) is embedded with a detachable guide post (16), and the center of the guide post (16) is provided with a first through hole (161) aligned with the central axis of the opening (11).

3. The opening positioning mold for automotive reflector cups according to claim 1, characterized in that: The fastener (13) is a cylindrical bolt. The bottom of the fastener (13) is provided with a second chuck (131) for limiting and fixing the bottom of the reflector bowl. The center of the fastener (13) is provided with a second through hole (132) aligned with the central axis of the positioning post (12) for the positioning post (12) to pass through.

4. The positioning mold for the opening of the automobile reflector according to any one of claims 1 to 3, characterized in that: The main body plate (1) of the mold is recessed with an installation groove (17) for assembling the electronic level (2).

5. A hole positioning mold for use on a reflector bowl for an automotive vehicle as defined in claim 1 wherein: The outer edge of the first chuck (14) has a plurality of protrusions (141) arranged at equal angles, or the outer edge of the first chuck (14) has a single protrusion (141).

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