Injection mold for deep bone position product
By designing the gap matching and cooling waterway between the front mold kernel and the front mold insert in the injection mold, the glue deficiency and processing difficulty of deep bone-position plastic parts are solved, and high-precision and efficient injection molding are achieved.
Patent Information
- Application Number
- CN202422472993.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-12
AI Technical Summary
When producing deep-bone plastic parts, existing injection molds are prone to glue deficiency, high processing difficulty and poor accuracy.
The front mold core and multiple front mold inserts are designed. The front mold inserts are matched with the slot gap, and are equipped with bone position grooves and cooling water channels to ensure gas discharge, avoid gas traps, and are fixed and connected by screws to reduce processing difficulty.
It realizes full filling of deep bone position products, avoids glue shortage, and improves processing accuracy and efficiency.
Smart Images
Figure CN223173463U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and particularly relates to an injection mold for deep rib products. Background Art
[0002] An injection mold is an important tool for producing plastic parts. Through precise cooperation and high-pressure injection, molten plastic fills the mold cavity and forms the required shape of the product after cooling. When the existing injection molds produce some plastic parts with complex deep rib structures, due to the narrow cross-section and long flow path of the deep ribs, and the gas inside the cavity cannot be discharged smoothly, the flow resistance of the plastic melt increases significantly when flowing through these parts, resulting in difficulty for the plastic melt to fully fill the deep rib area and prone to the phenomenon of missing glue. In addition, due to the complex structure of the plastic parts with deep ribs, the cavity structure of the plastic mold is complex, resulting in high processing difficulty and long processing time for the plastic mold parts, and prone to problems with poor processing accuracy. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide an injection mold for deep rib products, which has short processing time and high precision for mold parts, and can avoid the phenomenon of missing glue in the product and ensure the qualified product size.
[0004] To solve the above technical problems, the utility model adopts the following technical solutions:
[0005] An injection mold for deep rib products includes a front mold core and a plurality of front mold inserts. A plurality of slots matching the front mold inserts are arranged at intervals on the front mold core. The front mold inserts are inserted into the slots with a clearance fit, and a plurality of first rib slots are arranged on the outer side walls of two opposite sides of the front mold inserts. The first rib slots are arranged along the mold opening and closing direction. A plurality of second rib slots corresponding to the first rib slots are arranged on the inner side wall of the slot. The second rib slots and the first rib slots are joined to form a cavity for forming deep ribs.
[0006] As a further elaboration of the above technical solution:
[0007] The front mold insert includes an insertion part and a fixing part. The insertion part is inserted into the slot with a clearance fit. At least two screw holes are arranged at the end of the fixing part. Screws are arranged in the screw holes, and the fixing part is fixedly connected to the front mold bottom plate through the screws.
[0008] A shoulder is formed between the insertion part and the fixing part, and the shoulder is used to limit the insertion part.
[0009] The slot is a trapezoidal slot, and the insertion part is a trapezoid.
[0010] Cooling water channels are distributed in both the front mold core and the front mold insert.
[0011] Compared with the prior art, the utility model at least realizes the following beneficial effects:
[0012] By inserting a front mold insert with a clearance fit on the front mold core, when the injection mold is closed, the gas inside the cavity can be discharged from the fitting gap between the front mold insert and the slot, avoiding the phenomenon of trapped air, enabling the plastic melt to fully fill the deep rib area, avoiding the phenomenon of missing glue, and ensuring the qualified product size; the front mold insert is movably connected to the front mold core. Before assembling the front mold insert and the front mold core, a first rib groove and a second rib groove are respectively machined on the front mold insert and the front mold core, which can reduce the processing difficulty, and multiple front mold inserts or front mold cores can be processed synchronously. The time is fast. After rough machining, it is not easy to accumulate carbon during electrical discharge machining together, and the precision is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Now, one or more embodiments of the present utility model will be described only by way of example with reference to the accompanying drawings, in which:
[0014] Figure 1 is a schematic exploded view of an embodiment of the present application;
[0015] Figure 2 is a schematic structural view of the front mold insert of an embodiment of the present application;
[0016] Figure 3 is a schematic structural view of the front mold insert from another perspective of an embodiment of the present application;
[0017] Figure 4 is a top view of an embodiment of the present application;
[0018] Figure 5 is Figure 4 the A-A cross-sectional view of.
[0019] The reference numerals in the figures are: 1, front mold core; 2, front mold insert; 21, insertion part; 22, fixing part; 221, screw hole; 3, slot; 31, second rib groove; 4, first rib groove; 5, shoulder; 6, cooling water channel; 7, deep rib product. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The present utility model will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. It should be understood, however, that the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These 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 those skilled in the art.
[0021] In the description of the present application, it should 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", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meanings of "several" and "multiple" are two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.
[0022] As Figures 1 to 5 shown, in an embodiment of the present utility model, the injection mold for the deep rib product includes a front mold core 1 and a plurality of front mold inserts 2; a plurality of slots 3 matching the front mold inserts 2 are arranged at intervals on the front mold core 1; the front mold inserts 2 are inserted into the slots 3 with a clearance fit. Specifically, the clearance size between the front mold inserts 2 and the slots 3 is a unilateral clearance of 0.01 mm, and a plurality of first rib grooves 4 are provided on the outer side walls of two opposite sides of the front mold inserts 2. The first rib grooves 4 are arranged along the mold opening and closing direction. A plurality of second rib grooves 31 corresponding to the first rib grooves 4 are provided on the inner side walls of the slots. The second rib grooves 31 and the first rib grooves 4 are joined to form a cavity for forming the deep rib of the deep rib product 7.
[0023] Optionally, the front mold insert 2 includes a plugging portion 21 and a fixing portion 22. The plugging portion 21 is plugged into the slot 3 with a clearance fit. At least two screw holes 221 are provided at the end of the fixing portion 22. Screws are provided in the screw holes 221, and the fixing portion 22 is fixedly connected to the front mold bottom plate through the screws. In this embodiment, the front mold core 1 is provided on the front mold plate. The front mold insert 2 is locked on the front mold bottom plate through screws, and a core-pulling structure for the front mold insert (not shown in the figure) is provided in the front mold part. Each time the injection mold is opened, the front mold insert 2 is first core-pulled under the action of the core-pulling structure for the front mold insert. When the core-pulling action is performed, the front mold insert 2 rubs against the slot 3 of the front mold core 1, and the impurities in the gap between the front mold insert 2 and the front mold core 1 can be rubbed out, thereby ensuring the exhaust performance of the injection mold.
[0024] Optionally, a shoulder 5 is formed between the plugging portion 21 and the fixing portion 22, and the shoulder 5 is used to limit the plugging portion 21.
[0025] Optionally, the slot 3 is a trapezoidal slot, and the plugging portion 21 is a trapezoid, which is beneficial to the insertion of the plugging portion 21 into the slot 3.
[0026] Optionally, cooling water channels 6 are distributed in both the front mold core 1 and the front mold insert 2 to ensure that the plastic material solidifies within a suitable temperature range and improve the quality of injection molding.
[0027] The working principle of the present utility model is as follows: By plugging the front mold insert 2 with a clearance fit on the front mold core 1, when the injection mold is closed, the gas inside the cavity can be discharged from the fitting gap between the front mold insert 2 and the slot 3, avoiding the phenomenon of trapped air, so that the plastic melt can fully fill the deep rib area, avoiding the phenomenon of missing glue, and ensuring the qualified size of the deep rib product 7; Each time the injection mold is opened, the front mold insert 2 is first core-pulled under the action of the core-pulling structure for the front mold insert, so that the front mold insert 2 rubs against the slot 3, and the impurities in the gap are discharged, ensuring the exhaust performance of the injection mold. The front mold insert 2 is movably connected to the front mold core 1. Before assembling the front mold insert 2 and the front mold core 1, the first rib groove 4 and the second rib groove 31 are respectively machined on the front mold insert 2 and the front mold core 1, reducing the processing difficulty, and multiple front mold inserts 2 or front mold cores 1 can be processed synchronously, which is fast in time. After rough machining, it is not easy to accumulate carbon during electrical discharge machining together, and the accuracy is high.
[0028] It should be understood that all the above embodiments are exemplary rather than restrictive. Under the concept of the present utility model, any modification, equivalent change and modification made to the above-described specific embodiments by those skilled in the art still fall within the scope of the technical solution of the present utility model.
Claims
1. An injection mold for a deep rib product, comprising a front mold core and a plurality of front mold inserts, characterized in that: A plurality of slots matching the front mold inserts are arranged at intervals on the front mold core. The front mold inserts are inserted into the slots with a clearance fit. On the outer walls of two opposite sides of the front mold inserts, a number of first rib slots are provided. The first rib slots are arranged along the mold opening and closing direction. A number of second rib slots corresponding to the first rib slots are provided on the inner side walls of the slots. The second rib slots and the first rib slots are joined to form a cavity for forming deep ribs.
2. The injection mold for the deep rib product according to claim 1, characterized in that: The front mold insert includes a plugging portion and a fixing portion. The plugging portion is inserted into the slot with a clearance fit. At least two screw holes are provided at the end of the fixing portion. Screws are provided in the screw holes, and the fixing portion is fixedly connected to the front mold bottom plate through the screws.
3. The injection mold for the deep rib product according to claim 2, characterized in that: A shoulder is formed between the plugging portion and the fixing portion, and the shoulder is used to limit the plugging portion.
4. The injection mold for the deep rib product according to claim 2 or 3, characterized in that: The slot is a trapezoidal slot, and the plugging portion is a trapezoid.
5. The injection mold for the deep rib product according to claim 1, characterized in that: Cooling water channels are distributed in both the front mold core and the front mold insert.