Injection mold with core-pulling facilitation

Abstract

The utility model provides a kind of injection mold convenient to core-pulling, comprising: support base plate, mold base, the mold base is installed in support base plate side end inner wall, the support base plate right end is equipped with mould closing mechanism, the support base plate left end is equipped with guiding mechanism, the inner wall of bottom mold base is equipped with meshing clamping assembly, the inner wall of top mold base is equipped with butt joint clamping assembly, the side end of support baffle is equipped with fastening assembly.The utility model provides a kind of injection mold convenient to core-pulling, by the cooperation of meshing clamping assembly and butt joint clamping assembly of being set, can utilize the accurate tooth profile cooperation of gear, to realize the accurate positioning of movable mould and fixed mould, and when meshing, form mechanical interlocking, to avoid small displacement of mould due to stress, ensure that product wall thickness is uniform, size meets design requirement.Meanwhile, by the fastening assembly of two ends convenient rotation, the position of mould can be further fastened, to ensure the position stability of mould.

Description

Technical Field

[0001] This utility model relates to the field of injection mold processing technology, and in particular to an injection mold that facilitates core pulling. Background Technology

[0002] With the rapid development of modern manufacturing, injection molding technology is widely used in many fields such as automobiles, electronics, and home appliances, which places higher demands on the precision, complexity, and production efficiency of plastic products. The demand for plastic products with complex structures such as side holes, side recesses, and threads is increasing, making the core-pulling mechanism in injection molds one of the key technologies for achieving product molding.

[0003] Traditional inclined guide post and slider core-pulling mechanisms rely primarily on the tilt angle of the inclined guide post and the sliding of the slider to achieve core pulling. During mold closing, the positioning of the slider and the mold body is achieved only through simple guide grooves and limiting devices, which cannot guarantee high-precision positioning. When the molten plastic is injected into the cavity under high pressure during injection molding, the mold is prone to slight displacement, leading to defects such as flash and uneven wall thickness in the product, affecting product quality and dimensional accuracy.

[0004] Therefore, it is necessary to provide an injection mold that facilitates core pulling to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides an injection mold that facilitates core pulling, solving the problem that existing molds are prone to positional deviations during mold closing and injection molding, and cannot automatically interlock and tighten according to the position of the structure.

[0006] To solve the above-mentioned technical problems, this utility model provides an injection mold for easy core pulling, comprising: a supporting base plate and a mold base. The mold base is installed on the inner wall of the side end of the supporting base plate. The right end of the supporting base plate is provided with a mold closing mechanism, and the left end of the supporting base plate is provided with a guiding mechanism for guiding the mold base during mold closing. The bottom inner wall of the mold base is provided with an engaging clamping assembly, and the top inner wall of the mold base is provided with a docking clamping assembly for locking the position of the mold base. Supporting baffles are installed at both ends of the mold base, and fastening assemblies are provided on the side ends of the supporting baffles.

[0007] Preferably, the mold closing mechanism includes a mounting plate, a drive motor is mounted on the top of the mounting plate, a drive rod is mounted on the output end of the drive motor, and a drive slider is threadedly connected to the inner wall of the drive rod for closing the moving mold of the mold base.

[0008] Preferably, the guiding mechanism includes a guide frame, a guide rod is installed between the inner walls of the guide frame, and a guide block slides on the inner wall of the guide rod for mold closing of the mold base.

[0009] Preferably, the meshing clamping assembly includes a rotating rod, a driven gear is mounted on the side end of the rotating rod, a clamping element is mounted on the side end of the driven gear for clamping the mold base, and a clamping block is fixed on the side end of the clamping element.

[0010] Preferably, the docking clamping assembly includes an active toothed plate, a locking plate is installed on the side end of the active toothed plate, and a clamping groove is provided on the inner wall of the locking plate. It can be used for clamping the mold base when it engages with the clamping assembly. Support blocks are installed at both ends of the active toothed plate for supporting the position of the active toothed plate.

[0011] Preferably, the fastening assembly includes a fixing groove and a fastening hole. The fixing groove is formed on the inner wall of the bottom of the support baffle, and the fastening hole is formed on the inner wall of the top of the support baffle. A limiting rod is provided inside the fixing groove, and a fastening frame is rotatably attached to the side end of the limiting rod. A fastening rod is threadedly connected to the side end of the fastening frame. The fastening rod cooperates with the fastening hole and can be used for positional fastening of the mold base.

[0012] Compared with related technologies, the injection mold provided by this utility model that facilitates core pulling has the following advantages:

[0013] Beneficial effects:

[0014] This invention provides an injection mold for easy core pulling. After the injection mold is closed, to ensure accurate positioning and precision machining, a combination of meshing and docking clamping components is used. The precise tooth meshing of gears enables accurate positioning of the moving and fixed molds. During meshing, a mechanical interlock is formed, providing basic positional constraint and preventing minor displacement of the mold due to stress. This ensures uniform wall thickness and dimensions that meet design requirements, avoiding defects such as flash and material shortages. Furthermore, during the injection mold processing, the easily rotating fastening components at both ends further secure the mold's position, ensuring its stability. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of an injection mold for easy core pulling provided by this utility model;

[0016] Figure 2 for Figure 1 The diagram shows the structural schematic of the mold base.

[0017] Figure 3 for Figure 1 The diagram shows the structure of the drive rod.

[0018] Figure 4 for Figure 1 The diagram shows the structure of the supporting baffle.

[0019] Figure 5 for Figure 1 The diagram shows the structure of the meshing and clamping assembly.

[0020] The diagram is labeled as follows: 1. Support base plate, 2. Mold base, 3. Mold closing mechanism, 31. Mounting plate, 32. Drive motor, 33. Drive rod, 34. Drive slider, 4. Guide mechanism, 41. Guide frame, 42. Guide rod, 43. Guide plate, 5. Support baffle, 6. Engaging clamping assembly, 61. Rotating rod, 62. Driven gear, 63. Clamping part, 64. Clamping block, 7. Connecting clamping assembly, 71. Driving gear plate, 72. Locking plate, 73. Clamping groove, 74. Support block, 8. Fastening assembly, 81. Fixing groove, 82. Fastening hole, 83. Limiting rod, 84. Fastening frame, 85. Fastening rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of an injection mold for easy core pulling provided by this utility model; Figure 2 for Figure 1 The diagram shows the structural schematic of the mold base. Figure 3 for Figure 1 The diagram shows the structure of the drive rod. Figure 4 for Figure 1 The diagram shows the structure of the supporting baffle. Figure 5 for Figure 1 The diagram shows the structure of the meshing and clamping assembly. An injection mold for easy core pulling includes: a support base plate 1 and a mold base 2. The mold base 2 is mounted on the inner wall of the side end of the support base plate 1. A mold closing mechanism 3 is provided at the right end of the support base plate 1, and a guide mechanism 4 is provided at the left end of the support base plate 1 for guiding the mold base 2 during mold closing. A meshing and clamping assembly 6 is installed on the inner wall of the bottom of the mold base 2, and a mating and clamping assembly 7 is installed on the inner wall of the top of the mold base 2 for locking the position of the mold base 2. Support baffles 5 are installed at both ends of the mold base 2, and fastening assemblies 8 are provided on the side ends of the support baffles 5.

[0023] The mold closing mechanism 3 includes a mounting plate 31, a drive motor 32 is mounted on the top of the mounting plate 31, a drive rod 33 is mounted on the output end of the drive motor 32, and a drive slider 34 is threadedly connected to the inner wall of the drive rod 33 for closing the moving mold of the mold base 2.

[0024] The drive motor 32 located on the side can stably and accurately perform the mold closing operation on the internal mold base 2, reducing the complexity of the driving process.

[0025] The mold closing mechanism 3 includes, but is not limited to, motor drive and hydraulic drive; in this embodiment, the mold closing mechanism 3 is preferably motor driven.

[0026] The guiding mechanism 4 includes a guide frame 41, a guide rod 42 installed between the inner walls of the guide frame 41, and a guide block 43 sliding on the inner wall of the guide rod 42 for mold closing of the mold base 2.

[0027] When the internal mold base 2 is in the process of mold closing, the guide rod 42 and guide block 43 on the side can provide accurate position guidance to reduce the workpiece position deviation when the mold base 2 moves, thereby ensuring the accuracy of mold closing.

[0028] Among them, the guide mechanism 4 includes, but is not limited to, the guide post and guide sleeve type and the conical surface positioning type; in this embodiment, the guide mechanism 4 is preferably the guide post and guide sleeve type.

[0029] The meshing clamping assembly 6 includes a rotating rod 61, a driven gear 62 is installed on the side end of the rotating rod 61, and a clamping member 63 is installed on the side end of the driven gear 62 for clamping the mold base 2. A clamping block 64 is fixed on the side end of the clamping member 63.

[0030] When the top docking clamping assembly 7 is docked, it first engages with the driven gear 62 in a structural rotation. Then, as the position moves continuously, the clamping piece 63 on the inner wall of the side end will simultaneously clamp onto the inner wall of the docking clamping assembly 7 to form an interlocking fastening of the structure.

[0031] Among them, the meshing clamping component 6 includes, but is not limited to, gear and rack type and gear disc type; in this embodiment, the meshing clamping component 6 is preferably gear and rack type.

[0032] The docking clamping assembly 7 includes an active toothed plate 71, a locking plate 72 is installed on the side of the active toothed plate 71, and a clamping groove 73 is opened on the inner wall of the locking plate 72. It can be used for clamping the mold base 2 when it engages with the clamping assembly 6. Support blocks 74 are installed at both ends of the active toothed plate 71 for supporting the position of the active toothed plate 71.

[0033] When the docking clamping assembly 7 moves, the active toothed plate 71 on the inner wall will engage with the inner wall of the docking clamping assembly 6, and under the position limit of the side locking plate 72, the internal structure can be engaged, locked and fixed to improve the tightness of the structure.

[0034] Among them, the docking clamping component 7 includes, but is not limited to, gear and rack type and wedge block type; in this embodiment, the docking clamping component 7 is preferably gear and rack type.

[0035] The fastening assembly 8 includes a fixing groove 81 and a fastening hole 82. The fixing groove 81 is formed on the bottom inner wall of the support baffle 5, and the fastening hole 82 is formed on the top inner wall of the support baffle 5. A limiting rod 83 is provided inside the fixing groove 81. A fastening frame 84 is rotatably connected to the side end of the limiting rod 83. A fastening rod 85 is threadedly connected to the side end of the fastening frame 84. The fastening rod 85 cooperates with the fastening hole 82 and can be used to fasten the position of the mold base 2.

[0036] After the internal mold base 2 is closed, the fastening frames 84 at both ends of the bottom can be rotated. When rotated to the vertical direction, the fastening rod 85 on the inner wall is rotated to fasten the structure into the fastening hole 82, thereby further stabilizing and fastening the position of the mold base 2.

[0037] Among them, the fastening component 8 includes, but is not limited to, threaded fastening type and hydraulic fastening type; in this embodiment, the fastening component 8 is preferably threaded fastening type.

[0038] The working principle of the injection mold for easy core pulling provided by this utility model is as follows:

[0039] In the mold closing process, the mold base 2 is first installed inside the support base plate 1, and the mold closing process is driven by the mold closing mechanism 3 on the side. When the internal mold base 2 is closing, the top docking clamping component 7 will automatically limit itself to the meshing clamping component 6, forming gear meshing and mechanical interlocking, reducing the positional deviation of the internal mold base 2. Subsequently, after the mold closing is completed, the fastening components 8 at both ends of the bottom can be rotated to lock the structure to the top inner wall of the mold, so as to further lock the position of the mold.

[0040] Compared with related technologies, the injection mold provided by this utility model that facilitates core pulling has the following advantages:

[0041] Beneficial effects:

[0042] After the injection mold is closed, to ensure accurate positioning and precision machining, the engaging and clamping components 6 and 7 work together to achieve precise positioning of the moving and fixed molds using the precise tooth meshing of gears. During engagement, a mechanical interlock is formed, providing basic positional constraint and preventing minor displacement of the mold due to stress. This ensures uniform wall thickness and dimensions that meet design requirements, avoiding defects such as flash and material shortages. Simultaneously, during the injection mold machining process, the easily rotating fastening components 8 at both ends further secure the mold's position, ensuring its stability.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An injection mold for easy core pulling, characterized in that, include: The support base plate and the mold base are provided. The mold base is installed on the inner wall of the side end of the support base plate. The right end of the support base plate is provided with a mold closing mechanism and the left end of the support base plate is provided with a guide mechanism for guiding the mold base during mold closing. The bottom inner wall of the mold base is provided with an engagement clamping assembly and the top inner wall of the mold base is provided with a docking clamping assembly for locking the position of the mold base. Support baffles are installed at both ends of the mold base, and fastening assemblies are provided on the side ends of the support baffles.

2. The injection mold for easy core pulling according to claim 1, characterized in that, The mold closing mechanism includes a mounting plate, a drive motor is mounted on the top of the mounting plate, a drive rod is mounted on the output end of the drive motor, and a drive slider is threadedly connected to the inner wall of the drive rod for closing the moving mold of the mold base.

3. The injection mold for easy core pulling according to claim 1, characterized in that, The guiding mechanism includes a guide frame, a guide rod installed between the inner walls of the guide frame, and a guide block sliding on the inner wall of the guide rod for mold closing of the mold base.

4. The injection mold for easy core pulling according to claim 1, characterized in that, The meshing clamping assembly includes a rotating rod, a driven gear is installed on the side end of the rotating rod, and a clamping component is installed on the side end of the driven gear for clamping the mold base during mold closing. A clamping block is fixed on the side end of the clamping component.

5. The injection mold for easy core pulling according to claim 1, characterized in that, The docking clamping assembly includes an active toothed plate, a locking plate installed on the side end of the active toothed plate, and a clamping groove opened on the inner wall of the locking plate. It can be used for clamping the mold base when it engages with the clamping assembly. Support blocks are installed at both ends of the active toothed plate for supporting the position of the active toothed plate.

6. The injection mold for easy core pulling according to claim 1, characterized in that, The fastening assembly includes a fixing groove and a fastening hole. The fixing groove is formed on the inner wall of the bottom of the support baffle, and the fastening hole is formed on the inner wall of the top of the support baffle. A limiting rod is provided inside the fixing groove. A fastening frame is rotatably connected to the side end of the limiting rod. A fastening rod is threaded to the side end of the fastening frame. The fastening rod cooperates with the fastening hole and can be used for position fastening of the mold base.

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