O-shaped ring injection mold
Patent Information
- Application Number
- CN202520098980.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The existing O-ring mold's flow channel design leads to material waste and uneven molding, and it is prone to breakage during demolding.
It adopts a multi-channel structure design, including a first and second channel system, with a connecting part between the channels to control the flow of the rubber material. It combines an X-shaped structure and protrusions to optimize the flow, reduce the consumption of rubber material per unit and ensure the molding quality.
It improves the utilization rate of the rubber material, ensures the uniformity of molding and the smoothness of demolding, and reduces production costs.
Smart Images
Figure CN223877418U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rubber mould technical field especially relates to a O type circle injection mould. BACKGROUND
[0002] As Figure 1 As shown in the drawing, for the runner of the mould of O type rubber ring, the rubber material enters the first cavity from four directions and eight lines after entering the mould plate, and the excess material groove is originally used for storing the excess material and placing the unit consumption.
[0003] If the runner is thinned, it is difficult to ensure the uniformity of the material entering, and the material is easy to be pulled off during the drawing. INVENTION CONTENTS
[0004] In order to solve the technical problems in the background art, the utility model provides an O type circle injection mould.
[0005] The utility model discloses an O type circle injection mould, including the first mould plate and the second mould plate of setting in the first mould plate below, the first mould plate and the second mould plate form the first cavity between, there is injection hole on the first mould plate, there is first passageway between the first mould plate and the second mould plate, the first passageway guides the rubber material in the injection hole to the first cavity, the first passageway includes first main passageway and first branch passageway, the first main passageway communicates the injection hole with the first branch passageway, there is first communication part between the first branch passageway and the first main passageway, the width of the first communication part is greater than the width of the first branch passageway and the width of the first main passageway.
[0006] Preferably, the depth of the first communication part is greater than the depth of the first main passageway and the depth of the first branch passageway.
[0007] Preferably, the width of the first communication part gradually narrows from the side close to the injection hole to the side away from the injection hole.
[0008] As a further optimized scheme of the utility model, at least two groups of the first branch passageways communicated with different first main passageways are communicated with one first cavity.
[0009] As a further optimized scheme of the utility model, one injection hole corresponds to four first main passageways, one first main passageway is communicated with two first branch passageways, one first main passageway and two first branch passageways communicated with the first main passageway are defined as a group of first passageways, and in a group of first passageways:
[0010] The first branch separation part between the two first branch channels gradually becomes lower from the side close to the first main channel to the side away from the first branch channel and then gradually becomes higher.
[0011] As a further optimization of the utility model, in a group of the first channels:
[0012] The two groups of first branch channels form an X-shaped structure, and the first main channel is located between the two groups of first branch channels.
[0013] As a further optimization of the utility model, the first main channel has a first protruding part in the middle, which separates the first channel into a first part, a second part and a third part in communication, and the depth of the first part and the third part is greater than that of the second part.
[0014] As a further optimization of the utility model, a third mold plate is further arranged below the second mold plate, a second cavity is formed between the second mold plate and the third mold plate, a communication hole is formed in the second mold plate and communicates with the injection hole, a second channel is formed between the second mold plate and the third mold plate, and the second channel communicates the second cavity and the communication hole.
[0015] The second channel includes a second main channel and a second branch channel, the second main channel communicates the communication hole and the second branch channel, and a second communication part is arranged between the second branch channel and the second main channel, the width of the second communication part is greater than the width of the second main channel and the width of the second branch channel. Preferably, the depth of the second communication part is greater than the depth of the second main channel and the depth of the second branch channel. Preferably, the width of the second communication part gradually becomes smaller from the side close to the communication hole to the side away from the communication hole.
[0016] As a further optimization of the utility model, one communication hole corresponds to four second main channels, one second main channel communicates with two second branch channels, one second main channel and the two second branch channels in communication with the same are defined as a group of second channels, and in a group of second channels:
[0017] A second branch separation part is arranged between the two second branch channels, and the height of the second branch separation part gradually becomes lower from the side close to the second main channel to the side away from the second branch channel and then gradually becomes higher.
[0018] As a further optimization of the utility model, the through hole comprises an upper through hole part, a lower through hole part and an intermediate through hole part between the upper through hole part and the lower through hole part, and the aperture of the intermediate through hole part is smaller than the apertures of the upper through hole part and the lower through hole part.
[0019] As a further optimization of the utility model, the aperture of the lower through hole part gradually increases from top to bottom.
[0020] As a further optimization of the utility model, the outer diameter of the upper through hole part gradually decreases from top to bottom.
[0021] In order to realize a more optimal product, as a further optimization of the utility model, a ring groove is formed in the side surface of the middle part of the upper through hole part.
[0022] In the utility model, the O-ring injection mold has small flowable space of rubber material, can reduce the unit consumption of preformed parts, and effectively improves the utilization rate of rubber material; the first communication part is arranged to increase the cross section at the inlet, so that the pulling off will not be broken.
[0023] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a cavity structure schematic view in the prior art;
[0025] Figure 2 It is a structure schematic view of the utility model;
[0026] Figure 3 It is a sectional view of the utility model;
[0027] Figure 4 It is the utility model Figure 3 It is a local enlarged view of A area;
[0028] Figure 5 It is a first mold plate structure schematic view of the utility model;
[0029] Figure 6 It is a second mold plate structure schematic view of the utility model;
[0030] Figure 7 It is the local enlarged view of B area of the utility model Figure 6
[0031] Figure 8 It is a third mold plate structure schematic view of the utility model;
[0032] Figure 9 It is the utility model Figure 8 Enlarged view of a portion of area C;
[0033] 1. First template; 10. Injection hole; 2. Second template; 20. Connecting hole; 200. Upper through hole; 201. Lower through hole; 202. Middle through hole; 203. Annular groove; 3. First cavity; 4. First channel; 40. First main channel; 41. First branch channel; 5. First connecting part; 6. First branch partition; 7. First protrusion; 8. Third template; 9. Second channel; 90. Second main channel; 91. Second branch channel; 11. Second cavity; 12. Second connecting part; 13. Second branch partition. Detailed Implementation
[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0035] like Figures 2-9 An O-ring injection mold is shown, comprising a first mold plate 1 and a second mold plate 2 disposed below the first mold plate 1. A first cavity 3 is formed between the first mold plate 1 and the second mold plate 2. The first mold plate 1 has an injection hole 10, and a first channel 4 is formed between the first mold plate 1 and the second mold plate 2. The first channel 4 guides the resin in the injection hole 10 to the first cavity 3. The first channel 4 includes a first main channel 40 and a first branch channel 41. The first main channel 40 connects the injection hole 10 and the first branch channel 41. A first connecting portion 5 is formed between the first branch channel 41 and the first main channel 40. The width of the first connecting portion 5 is greater than the first main channel 1. The width of the first main channel 40 and the width of the first branch channel 41 are both specified. Preferably, the depth of the first connecting portion 5 is greater than the depth of the first main channel 40 and the depth of the first branch channel 41. Preferably, the first connecting portion is triangular, and the width of the first connecting portion 5 gradually decreases from the side closer to the injection hole 10 to the side farther away from the injection hole 10. Preferably, the diameter of the first main channel 40 at the end closer to the first branch channel 41 is greater than the diameter of the first main channel 40 at the end farther away from the first branch channel 41. Preferably, at least two sets of first branch channels 41 connected to different first main channels 40 are connected to a first cavity 3. This ensures processing efficiency and yield while reducing the diameter of the first channel 4. Preferably, the depth of the first main channel 40 is greater than the depth of the first branch channel 41.
[0036] Preferably, one injection hole 10 corresponds to four first main channels 40, one first main channel 40 communicates with two first branch channels 41, one first main channel 40 and two first branch channels 41 communicating with the first main channel 40 are defined as a group of first channels 4, and in the group of first channels 4:
[0037] There is a first branch separation part 6 between the two first branch channels 41, the height of the first branch separation part 6 gradually decreases from the side close to the first main channel 40 to the side away from the first branch channel 41, and then gradually increases, and the middle parts of the two first branch channels 41 communicate.
[0038] In order to further increase the better flow guiding effect, in the group of first channels 4:
[0039] The two groups of first branch channels 41 form an X-shaped structure, and the first main channel 40 is located between the two groups of first branch channels 41.
[0040] In order to further increase the flow guiding effect, the middle part of the first main channel 40 has a first protruding part 7, the first protruding part 7 separates the first channel 4 into a first part, a second part and a third part in communication, the first part, the second part and the third part are arranged in a straight line, and the depth of the first part and the third part is greater than the depth of the second part.
[0041] In order to increase the processing efficiency, a third mold plate 8 is further included, the third mold plate 8 is arranged below the second mold plate 2, the first mold plate 1 is an upper mold, the second mold plate 2 is a middle mold, and the third mold plate 8 is a lower mold, a second cavity 11 is formed between the third mold plate 8 and the second mold plate 2, the second mold plate 2 is provided with a communication hole 20 communicating with the injection hole 10, a second channel 9 is formed between the second mold plate 2 and the third mold plate 8, and the second channel 9 communicates the second cavity 11 and the communication hole 20;
[0042] The second channel 9 includes a second main channel 90 and a second branch channel 91, the second main channel 90 communicates the communication hole 20 and the second branch channel 91; there is a second communication part 12 between the second branch channel 91 and the second main channel 90, the width of the second communication part 12 is greater than the width of the second main channel 90 and the width of the second branch channel 91, preferably, the depth of the second communication part 12 is greater than the depth of the second main channel 90 and the depth of the second branch channel 91, and preferably, the width of the second communication part 12 gradually narrows from the side close to the communication hole 20 to the side away from the communication hole 20.
[0043] The structure of the second channel 9 is the same as that of the first channel 4, and preferably, one communication hole 20 corresponds to four second main channels 90, one second main channel 90 communicates with two second branch channels 91, one second main channel 90 and two second branch channels 91 communicating with the second main channel 90 are defined as a group of second channels 9, and in the group of second channels 9:
[0044] The second branch partition 13 is provided between the two second branch passages 91, and the height of the second branch partition 13 gradually decreases from the side close to the second main passage 90 to the side away from the second branch passage 91, and then gradually increases.
[0045] To increase the flow guiding effect, the communication hole 20 preferably comprises an upper through hole part 200, a lower through hole part 201, and an intermediate through hole part 202 between the upper through hole part 200 and the lower through hole part 201, the aperture of the intermediate through hole part 202 is smaller than the apertures of the upper through hole part 200 and the lower through hole part 201.
[0046] To increase the flow guiding effect, the aperture of the lower through hole part 201 gradually increases from top to bottom.
[0047] To increase the flow guiding effect, the outer diameter of the upper through hole part 200 gradually decreases from top to bottom.
[0048] To achieve a better product, the upper through hole part 200 preferably has a ring groove 203 on the middle side.
[0049] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0050] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0051] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific situation.
[0052] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be first and second feature direct contact, or first and second feature indirectly contact by intermediate medium.Moreover, first feature is "on", "above" and "on" second feature can be first feature is directly above or obliquely above second feature, or just indicate that the horizontal height of first feature is higher than second feature.First feature is "under", "below" and "under" second feature can be first feature is directly below or obliquely below second feature, or just indicate that the horizontal height of first feature is less than second feature.
[0053] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.
Claims
1. An injection mold for O-rings, comprising a first mold plate (1) and a second mold plate (2) arranged below the first mold plate (1), a first mold cavity (3) being formed between the first mold plate (1) and the second mold plate (2), the first mold plate (1) having a gate opening (10), a first channel (4) being formed between the first mold plate (1) and the second mold plate (2), the first channel (4) guiding the material in the gate opening (10) to the first mold cavity (3), characterized in that, The first channel (4) includes a first main channel (40) and a first branch channel (41), the first main channel (40) communicates the injection hole (10) with the first branch channel (41), there is a first communication part (5) between the first main channel (40) and the first branch channel (41), the width of the first communication part (5) is greater than the width of the first main channel (40) and the width of the first branch channel (41).
2. The O-ring injection mold of claim 1, wherein, One injection hole (10) corresponds to four first main channels (40), one first main channel (40) communicates with two first branch channels (41), one first main channel (40) and two first branch channels (41) communicating therewith are defined as a group of first channels (4), and in a group of first channels (4): There is a first branch separation part (6) between two first branch channels (41), the height of the first branch separation part (6) gradually decreases from the side close to the first main channel (40) to the side away from the first branch channel (41) and then gradually increases.
3. The O-ring injection mold of claim 2, wherein, In a group of first channels (4): Two groups of first branch channels (41) form an X-shaped structure, and the first main channel (40) is located between the two groups of first branch channels (41).
4. The O-ring injection mold of claim 1, wherein, The middle part of the first main channel (40) has a first protruding part (7), the first protruding part (7) separates the first channel (4) into a first part, a second part and a third part in communication, the depth of the first part and the third part is greater than the depth of the second part.
5. The O-ring injection mold according to any one of claims 1 to 4, wherein Further comprising a third mold plate (8), the third mold plate (8) is arranged below the second mold plate (2), a second cavity (11) is formed between the third mold plate (8) and the second mold plate (2), the second mold plate (2) is provided with a communication hole (20) communicating with the injection hole (10), a second channel (9) is formed between the second mold plate (2) and the third mold plate (8), the second channel (9) communicates the second cavity (11) and the communication hole (20); The second channel (9) includes a second main channel (90) and a second branch channel (91), the second main channel (90) communicates the communication hole (20) with the second branch channel (91); there is a second communication part (12) between the second branch channel (91) and the second main channel (90), the width of the second communication part (12) is greater than the width of the second main channel (90) and the width of the second branch channel (91).
6. The O-ring injection mold of claim 5, wherein, One communication hole (20) corresponds to four second main channels (90), one second main channel (90) communicates with two second branch channels (91), one second main channel (90) and two second branch channels (91) communicating therewith are defined as a group of second channels (9), and in a group of second channels (9): There is a second branch separation part (6) between two second branch channels (91), the height of the second branch separation part (6) gradually decreases from the side close to the second main channel (90) to the side away from the second branch channel (91) and then gradually increases. Second branch separation portions (13) are provided between the two second branch passages (91), and the height of the second branch separation portions (13) gradually decreases from the side close to the second main passage (90) to the side away from the second branch passage (91) and then gradually increases.
7. The O-ring injection mold of claim 5, wherein, The communication hole (20) comprises an upper through hole portion (200), a lower through hole portion (201), and an intermediate through hole portion (202) between the upper through hole portion (200) and the lower through hole portion (201), wherein the aperture of the intermediate through hole portion (202) is smaller than the apertures of the upper through hole portion (200) and the lower through hole portion (201).
8. The O-ring injection mold of claim 7, wherein, The aperture of the lower through hole portion (201) gradually increases from top to bottom.
9. The O-ring injection mold of claim 7, wherein, The outer diameter of the upper through hole portion (200) gradually decreases from top to bottom.
10. The O-ring injection mold of claim 7, wherein, A ring groove (203) is formed on the side of the middle portion of the upper through hole portion (200).