Inner gear ring injection mold structure
By enlarging the center position of the injection gate in the internal gear ring mold and designing equidistant oblique or arc-shaped injection grooves, the problems of uneven injection and poor roundness are solved, thus improving injection molding quality and efficiency.
Patent Information
- Application Number
- CN202423092401.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing internal gear ring injection molds suffer from uneven glue injection, poor product roundness, and noise issues, mainly due to the location and design of the glue inlet.
The design of the internal gear ring mold involves placing the sprue at the center, enlarging its diameter, and forming multiple equidistant oblique or arc-shaped sprue grooves on the inner wall surface. The direction of the sprue grooves is the same as the direction of the internal gear forming to guide and buffer the sprue, thereby improving the uniformity of sprue injection.
It achieves uniform glue injection, low pressure loss in the injection molding machine, improved product roundness, and reduced assembly noise.
Smart Images
Figure CN223589952U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mould technical field, especially, relate to a kind of inner gear ring injection mould structure. BACKGROUND
[0002] The injection mould of previous inner gear ring is mostly designed one, two or three points to carry out glue feeding, but no matter which, there is uneven glue feeding, product presents oval, true circularity is not good, influence precision and cause the problems of assembly noise to appear.
[0003] After research, the cause of the problem is not the number of glue feeding port, more is the position of glue feeding port and the reason of glue feeding port design, therefore, it is necessary to develop an inner gear ring injection mould capable of improving the above problems. INVENTION CONTENTS
[0004] The utility model provides a kind of inner gear ring injection mould structure to solve the problems raised in the above background.
[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:
[0006] A kind of inner gear ring injection mould structure, including inner gear ring mould, its characterized in that, the top of the inner gear ring mould is provided with the glue feeding port of through design, inner cavity is shaped with a circle of inner tooth, and the bottom is designed with auxiliary clamping position;The inner wall surface of the glue feeding port is designed and shaped with glue feeding groove;The glue feeding groove can be multiple, and is arranged on the inner wall surface of glue feeding port in equidistant shaping mode.
[0007] Preferably, the glue feeding groove is shaped in the inner wall surface of glue feeding port in oblique line or arc line.
[0008] Preferably, the direction of the glue feeding groove shaping oblique needs to be same with the direction of inner tooth shaping.
[0009] Compared with prior art, the utility model has the advantages that: the point glue feeding mode of previous inner gear ring injection mould is changed into annular glue feeding in the utility model, in addition to position selection at center, the diameter of glue feeding port is also enlarged, the enlarged glue feeding port can be further designed in detail to obtain more uniform glue feeding effect, specifically, the inner wall surface of glue feeding port is designed and shaped with glue feeding groove, the design of glue feeding groove can guide and have certain buffering effect to glue feeding work, achieve uniform glue feeding, small pressure loss of injection molding machine, and product true circularity is guaranteed. DRAWING DESCRIPTION
[0010] Figure 1 And Figure 2 All are the structure schematic diagram of the utility model.
[0011] Figure 3 It is the sectional structure schematic diagram of the utility model.
[0012] Figure 4 A schematic diagram of injection molding when the internal gear ring injection mold has three injection ports.
[0013] Figure 5 This is a schematic diagram of the injection molding process of this utility model. 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. 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.
[0015] like Figures 1 to 5 As shown, this utility model is an internal gear ring injection mold structure. The main component is the internal gear ring mold 1. The top of the internal gear ring mold 1 has a through-hole design for the glue inlet 10. Compared with the previous glue inlet 10 which was located at the edge off-center, the glue inlet 10 of this utility model is located at the center, and the diameter of the glue inlet 10 is also enlarged. The enlarged glue inlet 10 can be further designed in detail to obtain a more uniform glue injection effect. Specifically, the inner wall surface of the glue inlet 10 is designed and formed with a glue injection groove 13. The design of the glue injection groove 13 can guide the glue injection and provide a certain buffering effect, so as to achieve uniform glue injection, small pressure loss of the injection molding machine, and ensure the roundness of the product. Regarding the aforementioned injection groove 13, there can be multiple grooves, which are equidistantly formed on the inner wall of the injection port 10. It should be noted that the injection groove 13 is formed on the inner wall of the injection port 10 in an oblique or arc shape, and the direction of its oblique formation must be the same as the direction of the internal teeth. The purpose of this design is that the injection groove 13 can guide the flow of molten plastic while being designed to be in the same direction as the internal teeth. This allows for smoother injection of molten plastic with fluidity. If the guiding direction of the injection groove 13 is opposite to the direction of the internal teeth, the molten plastic will collide with the internal teeth formed in the opposite direction when it is injected, which will lead to problems such as air bubbles and uneven injection. Therefore, the design of the injection groove 13 can ensure uniform injection, low pressure loss of the injection molding machine, and the roundness of the product.
[0016] The inner cavity of the internal gear mold 1 is normally formed with a ring of internal teeth 11, and its bottom is designed with an auxiliary mounting slot 12. This design can conveniently and quickly fix the utility model in the designated working position, greatly increasing efficiency and making disassembly and assembly easier.
[0017] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0018] 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 indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.
[0019] In the utility model, 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 fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0020] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. In the description of the specification, the description of reference terms "one scheme", "some schemes", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more schemes or examples in a suitable manner.
Claims
1. An inner ring injection mold structure comprising an inner ring mold (1), characterized in that, The top of the inner gear ring mold (1) is provided with a through designed glue inlet (10), the inner cavity is formed with a circle of inner teeth (11), and the bottom is provided with an auxiliary clamping position (12); the inner wall surface of the glue inlet (10) is designed and formed with a glue groove (13); the glue groove (13) can be multiple, and is arranged on the inner wall surface of the glue inlet (10) in an equidistant forming mode.
2. The inner ring injection mold structure according to claim 1, wherein, The glue groove (13) is formed on the inner wall surface of the glue inlet (10) in a slant line or an arc line.
3. The inner ring injection mold structure according to claim 2, wherein, The direction of the formed slant of the glue groove (13) needs to be the same as the direction of the formed inner teeth.