One-to-many sliding block type mold stripping structure
By introducing a multi-slider ejection structure into the injection mold, and utilizing the cooperation of the main slider and the sub-slider, the ejection problem of plastic products with multiple side holes and grooves is solved, thereby saving mold space and reducing costs.
Patent Information
- Application Number
- CN202423171020.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing injection molds require multiple ejection structures when molding plastic products with multiple side holes and grooves, which occupies a large amount of mold space and increases production costs and processing difficulty.
The main slider drives at least two sub-sliders, and the combination of compression springs and guide blocks enables the synchronous demolding of multiple side cores, reducing the space occupied by the demolding structure.
It saves mold space, reduces production costs and processing difficulty, and simplifies the mold installation and maintenance process.
Smart Images
Figure CN223604889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold technology, and in particular to a sliding block ejection structure with one slide and multiple ejectors. Background Technology
[0002] During injection molding, when plastic products have lateral holes, grooves, or other structural features, if only the conventional opening and closing action of the injection mold (opening and closing along the main parting surface) is used, the plastic products will not be able to be successfully demolded due to the lateral structural features. Therefore, lateral parting is also required. The movement in the lateral direction will pull out or remove the side cores that form the lateral holes and grooves from the side of the plastic product, so that the plastic product can be successfully demolded after the main parting surface is opened.
[0003] However, since the current side core ejection structure of injection molds typically uses a single sliding block to drive a slider in a single direction, and the slider pulls the side core out from the side of the plastic product, for example... Figure 1 The elliptical plastic product shown has multiple lateral holes and slots. Each lateral hole and slot requires a set of ejection structures, which requires more mold space, increases mold production costs and mold processing difficulty. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a sliding block ejection structure with one slide and multiple slides, which saves mold space, reduces mold production costs and mold processing difficulty.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A multi-slider ejection structure is provided on the fixed mold of an injection mold. The fixed mold includes a front mold fixing plate, a sprue plate, and an A plate arranged sequentially from top to bottom. The bottom of the A plate is embedded with a front mold core, including a main slider, a compression spring, a guide block, and at least two spaced sub-sliders. The main slider is horizontally slidably connected to the bottom of the A plate and is arranged around the cavity of the front mold core. The main slider has oblique through holes running vertically through it. The end of the main slider near the front mold core has connecting grooves spaced along its length that match the number of sub-sliders. One end of the compression spring abuts against the main slider, and the other end abuts against the front mold core. One end of the guide block passes vertically through the sprue plate and is fixed to the front mold fixing plate, and the other end passes vertically through the A plate. It has an oblique insert that matches the oblique through hole. The oblique insert is used to insert into the oblique through hole and drive the main slider to slide toward the front mold core. One end of the sub-slider is horizontally slidably connected to the front mold core and has a side core for inserting into the cavity. The other end has a locking protrusion that slides with the connecting groove.
[0007] Further, the connecting groove is located on the top of the main slider; the clamping convex part is located on the bottom of the sub-slider, and the clamping convex part is inserted into the connecting groove and can slide along the connecting groove.
[0008] Further, the longitudinal section of the oblique insertion block and the oblique through hole is a parallelogram.
[0009] Further, the first limiting step is arranged between the oblique insertion block and the guide block, and the first limiting step is used for pressing on the top of the main slider and limiting the lower end of the guide block.
[0010] Further, the A plate is provided with a sliding groove matched with the main slider, and the main slider is in sliding connection with the sliding groove.
[0011] Further, the second limiting step is arranged on the two sides of the top of the main slider, and the support block is arranged below the second limiting step and fixed on the bottom of the A plate, and the support block is used for supporting the second limiting step and limiting the lower end of the main slider.
[0012] Further, the sliding channel matched with the sub-slider is horizontally arranged on the front mold core, the sliding channel is in communication with the cavity of the front mold core, and the sub-slider is in sliding connection with the sliding channel.
[0013] Further, the spring hole is arranged on one end of the main slider close to the front mold core, and the compression spring is coaxially inserted into the spring hole.
[0014] Compared with the prior art, the utility model at least realizes the following beneficial effects:
[0015] When the injection mold is in the closed mold state, the oblique insertion block at the lower end of the guide block is inserted into the oblique through hole, the inclined side wall of the oblique insertion block is in contact with the inclined inner side wall of the oblique through hole, the oblique insertion block can drive the main slider to move close to the cavity of the front mold core, so that the side core penetrates into the cavity, and the compression spring is compressed at this time; when the injection mold is in the open mold state, the oblique insertion block at the lower end of the guide block is pulled out from the oblique through hole, the main slider drives the sub-slider to move away from the cavity of the front mold core under the elastic force of the compression spring, so that the side core is pulled out from the side of the plastic product, so that the plastic product can be smoothly demolded after the main parting surface is opened; at least two sub-sliders are arranged on the single main slider, and the side core for molding the hole and the groove in the lateral direction is arranged on the sub-slider, so that at least two side cores can be driven to move out of the mold through the single main slider, the structure is compact, the space occupied by the ejection structure in the mold is reduced, the mold production cost is reduced, and the mold processing is more convenient. BRIEF DESCRIPTION OF DRAWINGS
[0016] One or more embodiments of the utility model will be described by way of example only with reference to the drawings, in which:
[0017] Figure 1 It is a structural schematic view of the plastic product;
[0018] Figure 2 The explosion view of the one-to-many slider type mold structure and the fixed mold;
[0019] Figure 3 The explosion view of the one-to-many slider type mold structure and the fixed mold from another perspective;
[0020] Figure 4 The bottom structure schematic view of the one-to-many slider type mold structure and the fixed mold;
[0021] Figure 5 The explosion view of the one-to-many slider type mold structure and the fixed mold;
[0022] Figure 6 The explosion view of the one-to-many slider type mold structure and the fixed mold from another perspective.
[0023] The figure mark is: 1, main slider; 11, oblique through hole; 12, connecting groove; 13, spring hole; 2, compression spring; 3, guide block; 31, oblique insertion block; 4, sub slider; 41, side core; 42, clamping convex part; 5, first limiting step; 6, second limiting step; 7, support block; 10, front mold fixed plate; 20, water gap plate; 30, A plate; 301, sliding groove; 40, front mold core; 401, slide; 402, cavity. DETAILED DESCRIPTION
[0024] The utility model will be described in detail below with reference to the exemplary embodiments in the drawings. But it should be known that the present application can be realized through various different forms, and should not be understood as limiting to the embodiments set forth herein. The embodiments are provided herein to make the disclosure of the present application more complete, and to fully convey the concept of the present application to the person skilled in the art.
[0025] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0026] As Figures 2 to 6 shown, a plurality of slide block type ejection structures are provided on the fixed mold of an injection mold, the fixed mold includes a front mold fixed plate 10, a nozzle plate 20 and an A plate 30 arranged in sequence from top to bottom, and the A plate 30 is embedded with a front mold core 40 at the bottom; the ejection structure includes a main slide block 1, a compression spring 2, a guide block 3 and at least two interval arranged sub slide blocks 4.
[0027] Specifically, the main slider 1 is horizontally and slidably connected at the bottom of the A plate 30 and is arranged around the cavity 402 of the front mold core 40, the main slider 1 is provided with a slanting through hole 11 vertically therethrough, and an end of the main slider 1 close to the front mold core 40 is provided with a plurality of connection grooves 12 along the length direction and matching the number of the sub-sliders 4; one end of the compression spring 2 abuts against the main slider 1, and the other end abuts against the front mold core 40; one end of the guide block 3 vertically penetrates the gate plate 20 and is fixed on the front mold fixed plate 10, and the other end vertically penetrates the A plate 30 and is provided with a slanting plug 31 matching the slanting through hole 11, the slanting plug 31 is used for inserting into the slanting through hole 11 and driving the main slider 1 to slide towards the front mold core 40; one end of the sub-slider 4 is horizontally and slidably connected to the front mold core 40 and is provided with a side core pin 41 used for inserting into the cavity 402, and the other end is provided with a clamping protrusion 42 slidably connected with the connection groove 12.
[0028] The working principle of the ejection structure is as follows: when the injection mold is in the closed mold state, the front mold fixed plate 10, the gate plate 20 and the A plate 30 are close to each other, so that the slanting plug 31 at the lower end of the guide block 3 can be inserted into the slanting through hole 11, when the slanting plug 31 vertically downwardly inserts into the slanting through hole 11, the slanting side wall of the slanting plug 31 is in contact with the slanting inner side wall of the slanting through hole 11, the slanting plug 31 can drive the main slider 1 to drive the sub-slider 4 to move close to the cavity 402 of the front mold core 40, so that the side core pin 41 penetrates into the cavity 402 of the front mold core 40, at this time, the compression spring 2 is compressed, the plastic melt enters the fixed mold through the sprue bush and flows into the cavity 402, so that the side core pin 41 can form the side features of the plastic product; when the injection mold is in the open mold state, the A plate 30 and the gate plate 20 will be opened, the A plate 30 is away from the gate plate 20, at this time, the slanting plug 31 at the lower end of the guide block 3 is pulled out of the slanting through hole 11, the main slider 1 drives the sub-slider 4 to move away from the cavity 402 of the front mold core 40 under the elastic force of the compression spring 2, so that the side core pin 41 is pulled out of the side of the plastic product, and the ejection is completed, so that the plastic product can be smoothly demolded after the main parting surface is opened; the utility model discloses at least two sub-sliders 4 are arranged on a single main slider 1, the side core pin 41 for forming the holes and grooves for the side direction is arranged on the sub-slider 4, so that at least two side core pins 41 can be driven to move out of the mold by the single main slider 1, the structure is compact, the space occupied by the ejection structure in the mold is reduced, the mold production cost is reduced, and the machining, installation and maintenance are facilitated.
[0029] Specifically, the connecting groove 12 is located at the top of the main slider 1; the clamping protrusion 42 is located at the bottom of the sub-slider 4, and the clamping protrusion 42 is inserted into the connecting groove 12 and can slide along the connecting groove 12. It should be noted that when the main slider 1 drives the sub-slider 4 to move away from the cavity 402 of the front mold core 40, the sub-slider 4 whose ejection direction is consistent with the sliding direction of the main slider 1 can be directly pulled by the main slider 1; the sub-slider 4 whose ejection direction is inconsistent with the sliding direction of the main slider 1 (that is, the ejection direction is inclined), because the connecting groove 12 is arranged along the length direction of the main slider 1, the clamping protrusion 42 of the sub-slider 4 is in sliding connection with the connecting groove 12 of the main slider 1, and in the process of being pulled by the main slider 1, the sub-slider 4 can also slide along the connecting groove 12, so that the ejection action can be matched with the ejection direction to pull out the side core 41 from the cavity 402.
[0030] In the embodiments of the utility model, under the premise that the sub-slider 4 can be correctly pulled by the main slider 1 and the ejection action is performed, the number of sub-sliders 4 can be set as required, so that it can be avoided that a set of ejection structure is arranged at each lateral hole or groove of the plastic product, and the mold space is saved.
[0031] Optionally, the longitudinal section of the oblique through hole 11 and the oblique insertion block 31 is a parallelogram.
[0032] Optionally, a first limiting step 5 is arranged between the oblique insertion block 31 and the guide block 3, and when the oblique insertion block 31 is inserted into the oblique through hole 11, the first limiting step 5 is used for pressing on the top of the main slider 1 and limiting the lower side of the guide block 3.
[0033] Optionally, a sliding groove 301 matched with the main slider 1 is arranged at the bottom of the A plate 30, and the main slider 1 is in sliding connection with the sliding groove 301. Second limiting steps 6 are arranged at the top of the main slider 1 on both sides, supporting blocks 7 are arranged below the second limiting steps 6, and the supporting blocks 7 are fixed at the bottom of the A plate 30 and used for supporting the second limiting steps 6 and limiting the lower side of the main slider 1. Optionally, the supporting blocks 7 are fixedly connected with the A plate 30 through screws.
[0034] Optionally, a sliding way 401 matched with the sub-slider 4 is horizontally arranged on the front mold core 40, the sliding way 401 is in communication with the cavity 402 of the front mold core 40, and the sub-slider 4 can slide along the sliding way 401.
[0035] Optionally, a spring hole 13 is arranged at one end of the main slider 1 close to the front mold core 40, and the compression spring 2 is coaxially inserted into the spring hole 13.
[0036] It should be understood that all the above embodiments are exemplary but not restrictive, and any modification, equivalent change and modification made by the person skilled in the art to the above described specific embodiments still belong to the range of the technical scheme of the utility model.
Claims
1. A multi-cavity slider ejection structure arranged on a fixed mold of an injection mold, the fixed mold comprising, from top to bottom, a front mold fixed plate, a nozzle plate, and an A plate, and the A plate is embedded with a front mold core at the bottom, characterized in that: The main slider, compression spring, guide block and at least two sub-sliders are arranged at intervals. The main slider is horizontally slidably connected to the bottom of the A plate and arranged around the cavity of the front mold core. One end of the compression spring is abutted against the main slider and the other end is abutted against the front mold core. One end of the guide block is vertically penetrated through the water gap plate and fixed on the front mold fixed plate, and the other end is vertically penetrated through the A plate and provided with a slanting insertion block matched with the slanting through hole. One end of the sub-slider is horizontally slidably connected to the front mold core and provided with a side core for inserting into the cavity, and the other end is provided with a clamping convex part slidably connected with the connecting slot.
2. The multi-bank slider die structure of claim 1, wherein: The connecting slot is located on the top of the main slider, and the clamping convex part is located on the bottom of the sub-slider.
3. The multi-bank slider die structure of claim 1, wherein: The longitudinal section of the slanting through hole and the slanting insertion block is a parallelogram.
4. The multi-bank slider die structure of claim 1 or 3, wherein: A first limiting step is arranged between the slanting insertion block and the guide block, and the first limiting step is used for pressing on the top of the main slider and limiting the lower part of the guide block.
5. The multi-bank slider die structure of claim 1, wherein: The bottom of the A plate is provided with a sliding groove matched with the main slider, and the main slider is slidably connected with the sliding groove.
6. The multi-bank slider die structure of claim 1 or 5, wherein: The top of the main slider is provided with a second limiting step on both sides, and a supporting block is arranged below the second limiting step.
7. The multi-bank slider die structure of claim 1, wherein: The front mold core is horizontally provided with a slide way matched with the sub-slider, and the slide way is communicated with the cavity of the front mold core.
8. The multi-bank slider die structure of claim 1, wherein: One end of the main slider is provided with a spring hole, and the compression spring is coaxially inserted into the spring hole.