A precision injection mold structure for preparing a large-width-ratio automobile tail lamp shell

Abstract

The utility model discloses a kind of precision injection mould structures of preparation big wide ratio automobile tail light lamp shell, it is related to injection mould technical field, including fixed mould and movable mould, both sides of the fixed mould and movable mould are provided with two groups of butt joint fixing mechanism for realizing fixed mould and movable mould alignment mould box fixed, butt joint fixing mechanism includes: butt joint unit and fixed unit, butt joint unit is set in the both sides of fixed mould and movable mould, including two groups of fixed seat fixedly installed in the both sides of fixed mould, the inside fixed mounting of fixed seat has plug-in tube, the both sides of movable mould are fixedly installed with two groups of abutment, by being provided with butt joint unit, using the sliding fit of plug-in post and plug-in tube, when fixed mould and movable mould moulding, realize automatic guiding and accurate alignment, effectively avoid the deflection and impact problem caused by manual visual alignment, especially suitable for large size, large weight mould hoisting and installation process, significantly improve moulding precision and operation safety.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a precision injection mold structure for preparing a wide-aspect-ratio automotive taillight housing. Background Technology

[0002] The taillight housing is the core component of a vehicle's rear lighting system, integrating protection, optical design, and functional identification.

[0003] According to the patent titled "An Injection Mold for a Lamp Housing with an Inclined Top Structure" (Patent Publication No.: CN209903832U, Patent Publication Date: 2020-01-07), the mold includes an upper mold base and a lower mold base corresponding to the upper mold base. The upper mold base has a mold cavity, a pouring hole penetrating the upper mold base, and at least two column sleeves. The column sleeves are located on the periphery of the upper mold base, and the mold cavity is located in the middle of the upper mold base. The pouring hole is located above the mold cavity. The lower mold base has guide pillars corresponding to the column sleeves and a punch corresponding to the mold cavity. The punch has a through hole, and an inclined top structure is located below the punch, penetrating the punch. The inclined top structure includes an inclined top seat, an inclined top rod, and an inclined top core. The inclined top seat has a groove, and a rolling shaft is located in the groove. The rolling shaft is hinged to the inclined top seat. One end of the inclined top rod is connected to the inclined top core, and the other end is connected to the rolling shaft. The use of line contact ensures smoother movement, effectively improving product quality and reducing product scrap and rework rates. The use of movable blocks and plates can save on mold costs and enable a single mold to serve multiple purposes.

[0004] Based on the aforementioned existing technology, current precision injection mold structures for manufacturing wide-aspect-ratio automotive taillight housings still have the following problems: large mold size and heavy weight. During hoisting and mold closing or installation on the injection molding machine, alignment of the fixed and moving molds relies entirely on manual visual inspection and slow movement, which easily leads to misalignment and impact. Therefore, this utility model provides a precision injection mold structure for manufacturing wide-aspect-ratio automotive taillight housings. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precision injection mold structure for manufacturing wide-aspect-ratio automotive taillight housings. This solves the following problems associated with existing precision injection mold structures for manufacturing wide-aspect-ratio automotive taillight housings: large mold size and heavy weight. Furthermore, during hoisting and mold closing or installation on the injection molding machine, alignment of the fixed and moving molds relies entirely on manual visual inspection and slow movement, which easily leads to misalignment and impact.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing, comprising a fixed mold and a moving mold, wherein two sets of docking and fixing mechanisms are provided on both sides of the fixed mold and the moving mold for aligning and fixing the fixed mold and the moving mold into a mold box, the docking and fixing mechanisms comprising: The docking unit is located on both sides of the fixed mold and the moving mold. It includes two sets of fixed seats fixedly installed on both sides of the fixed mold. A tube is fixedly installed inside the fixed seat. Two sets of top seats are fixedly installed on both sides of the moving mold. A pin is fixedly installed at the bottom of the top seat. The pin slides into the tube to achieve alignment and mold closing between the fixed mold and the moving mold. The fixing unit is located on the outside of the docking unit and is used to achieve rapid fixing between the fixed mold and the moving mold.

[0007] Preferably, the diameter of the hole inside the insert is matched with the diameter of the insert post, and the alignment between the fixed mold and the moving mold is achieved by inserting the insert post into the hole inside the insert.

[0008] Preferably, the fixing unit includes a connecting seat fixedly installed above the surface of the insert, a rotating shaft rotatably installed inside one end of the connecting seat, and a threaded sleeve fixedly installed on the surface of the rotating shaft.

[0009] Preferably, a threaded post is rotatably mounted on the internal thread of the threaded sleeve, and a pressure block is fixedly mounted on the surface of the threaded post.

[0010] Preferably, a retaining seat is fixedly installed on the top of the top seat by bolts, and the threaded post is inserted into the interior of the retaining seat. By rotating the threaded post, it moves inside the threaded sleeve rod, causing the pressure block to squeeze the top of the retaining seat, thereby achieving mold closing and fixing between the fixed mold and the moving mold.

[0011] Preferably, a handwheel is fixedly installed at the top of the threaded column, which provides a force point for personnel to quickly rotate the threaded column.

[0012] This invention provides a precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing. Compared with the prior art, it has the following advantages: 1. This precision injection mold structure for manufacturing wide-aspect-ratio automotive taillight housings, through the setting of a docking unit, utilizes the sliding fit of the insert and the insert cylinder to achieve automatic guidance and precise alignment during the closing of the fixed mold and the moving mold, effectively avoiding the misalignment and impact problems caused by manual visual alignment. It is especially suitable for the hoisting and installation of large-size and heavy molds, significantly improving the mold closing accuracy and operational safety.

[0013] 2. This precision injection mold structure for manufacturing wide-aspect-ratio automotive taillight housings utilizes a fixed unit. Through the threaded transmission between a threaded column and a threaded sleeve, coupled with a handwheel driving the pressure block to squeeze the clamping seat, rapid mechanical locking between the fixed and moving molds is achieved. This structure is not only simple and labor-saving to operate, but also ensures the stable holding of the mold after mold closing, preventing mold displacement due to vibration or pressure during injection molding, thereby guaranteeing the molding quality and dimensional consistency of the automotive taillight housing. Attached Figure Description

[0014] Figure 1 This is a right-side perspective view of the structure of this utility model; Figure 2 This is a right-side perspective view of the docking and fixing mechanism of this utility model. Figure 3 This is a three-dimensional structural diagram of the docking unit of this utility model. Figure 4 This is a three-dimensional structural diagram of the fixed unit of this utility model.

[0015] In the diagram: 1. Fixed mold; 2. Docking and fixing mechanism; 21. Docking unit; 211. Fixed seat; 212. Insert cylinder; 213. Top seat; 214. Insert column; 22. Fixed unit; 221. Connecting seat; 222. Rotating shaft; 223. Threaded sleeve; 224. Threaded column; 225. Pressure block; 226. Handwheel; 227. Card seat; 3. Moving mold. 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] Please see Figures 1-4 This utility model provides a technical solution: A precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing includes a fixed mold 1 and a moving mold 3. Two sets of docking and fixing mechanisms 2 are provided on both sides of the fixed mold 1 and the moving mold 3 to align and fix the fixed mold 1 and the moving mold 3 into a mold box. The docking and fixing mechanism 2 includes: The docking unit 21 is located on both sides of the fixed mold 1 and the moving mold 3. It includes two sets of fixed seats 211 fixedly installed on both sides of the fixed mold 1. The fixed seats 211 have inserts 212 fixedly installed inside. The moving mold 3 has two sets of top seats 213 fixedly installed on both sides. The bottom of the top seats 213 has inserts 214 fixedly installed. The inserts 214 slide into the inserts 212 to achieve the alignment and mold closing of the fixed mold 1 and the moving mold 3. The fixing unit 22 is located outside the docking unit 21 and is used to quickly fix the fixed mold 1 and the moving mold 3.

[0018] In this embodiment, the diameter of the hole inside the insert 212 is matched with the diameter of the insert post 214. The insertion post 214 is inserted into the hole of the insert 212 to achieve alignment between the fixed mold 1 and the moving mold 3.

[0019] Alignment between the fixed mold 1 and the moving mold 3 is achieved by inserting the insert pin 214 into the hole of the insert cylinder 212. This structure, through precision-machined insert components, plays an automatic guiding and initial positioning role during mold closing, significantly reducing reliance on operator experience and avoiding mold damage or product size deviation caused by misalignment. It is especially suitable for injection molding scenarios with high mold closing accuracy requirements, such as lamp housings with large aspect ratios.

[0020] In this embodiment, the fixing unit 22 includes a connecting seat 221 fixedly installed on the surface of the insert 212. A rotating shaft 222 is rotatably installed inside one end of the connecting seat 221, and a threaded sleeve 223 is fixedly installed on the surface of the rotating shaft 222.

[0021] In this embodiment, a threaded post 224 is rotatably mounted on the internal thread of the threaded sleeve 223, and a pressure block 225 is fixedly mounted on the surface of the threaded post 224.

[0022] The vertical lifting and lowering of the pressure block 225 is achieved through threaded transmission, which converts the rotational motion into linear clamping force. The structure is simple and reliable, the clamping force is adjustable and has good self-locking properties, ensuring that the mold will not loosen due to vibration or internal pressure during the injection molding process, thus guaranteeing the stability of the molding process and the consistency of the product.

[0023] In this embodiment, a retainer 227 is fixedly installed on the top of the top seat 213 by bolts. The threaded post 224 is inserted into the interior of the retainer 227. The threaded post 224 rotates and moves inside the threaded sleeve 223, causing the pressure block 225 to press the top of the retainer 227, thereby achieving mold closing and fixing between the fixed mold 1 and the moving mold 3.

[0024] The fixed mold 1 and the moving mold 3 are closed and fixed. The retainer 227 is a key component that bears the clamping force. Its detachable design makes it easy to maintain and replace. At the same time, the snap-fit ​​with the threaded post 224 ensures that the clamping force is directly and evenly transmitted to the moving mold 3, so as to achieve fast and reliable mold closing and locking.

[0025] In this embodiment, a handwheel 226 is fixedly installed at the top of the threaded post 224. The handwheel 226 provides a force point for personnel to quickly rotate the threaded post 224.

[0026] It improves the convenience and efficiency of operation, allowing operators to complete locking and unlocking actions without special tools, reducing labor intensity. It also reserves an interface for subsequent connection to automated drive devices, supporting the upgrading of molds to semi-automated or automated production lines.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] During operation, firstly, when the fixed mold 1 and the moving mold 3 are closed, the insert pin 214 is inserted into the inside of the insert cylinder 212 to align the fixed mold 1 and the moving mold 3. Then, push the threaded column 224 to make the rotating shaft 222 rotate inside the connecting seat 221. The rotating shaft 222 drives the threaded sleeve 223 to rotate synchronously with the threaded column 224. The threaded column 224 is inserted into the inside of the card seat 227. The user turns the handwheel 226 to drive the threaded column 224 to rotate, so that the pressure block 225 presses against the top of the card seat 227, thus fixing the fixed mold 1 and the moving mold 3.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing, comprising a fixed mold (1) and a moving mold (3), characterized in that: Two sets of docking and fixing mechanisms (2) are provided on both sides of the fixed mold (1) and the moving mold (3) to realize the alignment and fixing of the fixed mold (1) and the moving mold (3) into the mold box. The docking and fixing mechanism (2) includes: The docking unit (21) is located on both sides of the fixed mold (1) and the moving mold (3), including two sets of fixed seats (211) fixedly installed on both sides of the fixed mold (1). The fixed seats (211) are fixedly installed with inserts (212). The moving mold (3) is fixedly installed with two sets of top seats (213) on both sides. The bottom of the top seats (213) is fixedly installed with inserts (214), and the inserts (214) slide into the inserts (212) to realize the alignment and mold closing of the fixed mold (1) and the moving mold (3). The fixing unit (22) is located on the outside of the docking unit (21) and is used to achieve quick fixing between the fixed mold (1) and the moving mold (3).

2. The precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing according to claim 1, characterized in that: The diameter of the hole inside the insert (212) is matched with the diameter of the insert post (214). The insertion post (214) is inserted into the hole of the insert (212) to achieve alignment between the fixed mold (1) and the moving mold (3).

3. The precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing according to claim 1, characterized in that: The fixing unit (22) includes a connecting seat (221) fixedly installed on the surface of the insert (212), a rotating shaft (222) is rotatably installed inside one end of the connecting seat (221), and a threaded sleeve (223) is fixedly installed on the surface of the rotating shaft (222).

4. The precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing according to claim 3, characterized in that: The threaded sleeve (223) has a threaded column (224) rotatably mounted on its internal thread, and a pressure block (225) is fixedly mounted on the surface of the threaded column (224).

5. The precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing according to claim 4, characterized in that: The top of the top seat (213) is fixedly installed with a card seat (227) by bolts. The threaded column (224) is inserted into the inside of the card seat (227). The threaded column (224) rotates and moves inside the threaded sleeve (223), so that the pressure block (225) squeezes the top of the card seat (227), thereby realizing the mold closing and fixing between the fixed mold (1) and the moving mold (3).

6. The precision injection mold structure for manufacturing a wide-aspect-ratio automotive taillight housing according to claim 4, characterized in that: A handwheel (226) is fixedly installed at the top of the threaded column (224). The handwheel (226) provides a force point for personnel to quickly rotate the threaded column (224).

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