Backward-inclined injection mold for keycaps
By setting inclined guide grooves and inner cavity grooves in the keycap anti-sloping injection mold, the problem of air not being able to be vented from the inner cavity during the keycap injection process is solved, thus improving the injection quality of the product.
Patent Information
- Application Number
- CN202422823464.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
During the injection molding process of keycaps, air cannot be expelled from the inner cavity, leading to problems such as gaps in the product.
The keycap-type anti-sloping injection mold is used. By setting inclined guide grooves and inner cavity grooves in the mold, it is ensured that the molten plastic can enter the inner cavity groove in advance to fill it, avoid the generation of air bubbles, and improve the injection molding quality.
This effectively avoids the formation of air bubbles caused by molten plastic entering the inner cavity simultaneously, thus ensuring the injection molding quality of the product.
Smart Images
Figure CN223589981U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mold technical field, in particular to a key cap reverse oblique injection mold. BACKGROUND
[0002] Mold, industrial production is used to injection, blow molding, extrusion, die casting or forging pressure forming, smelting, stamping and other methods to get the desired products of various molds and tools. In short, the mold is used to make the tool of the formed object, and the tool is composed of various parts, and different molds are composed of different parts.
[0003] The existing electric appliance switch, whether it is a coffee machine, a juicer or other electric household appliances, or a machine device and a control box in industrial application are provided with a key switch, and different control functions are realized by pressing different switch keys. In the injection molding process of the key cap, some key caps need to be designed with positioning ribs inside, and because the injection cavity is divided into two sub-cavities inside and outside after the upper and lower molds are combined, if the traditional injection glue structure mode is adopted, the air in the inner sub-cavity cannot be exhausted, and thus the product may have a gap, therefore, it is necessary to propose a new key cap injection mold to solve the above problems. UTILITY MODEL CONTENT
[0004] The utility model discloses a key cap reverse oblique injection mold, which can solve the above problems.
[0005] To achieve the above requirements, the utility model solves the technical problems by adopting the technical scheme of:
[0006] A key cap reverse oblique injection mold is provided, which comprises an upper mold core and a lower mold core that are parallel to each other, a through hole is longitudinally provided in the lower mold core, a thimble sleeve is fixedly assembled in the through hole, a thimble body that is adapted to the inner cavity of the thimble sleeve is arranged in the thimble sleeve, an inner cavity groove is arranged on the top end face of the thimble body, and the inner cavity groove penetrates the side wall of the thimble body; the upper end of the thimble sleeve is located in the through hole, and the top end of the thimble body extends out of the through hole; an upper cavity groove is arranged on the lower surface of the upper mold core and corresponds to the upper end of the thimble body; an upper flow guide groove is arranged on the lower surface of the upper mold core, a through groove that communicates with the upper cavity groove is arranged on the inner wall of the upper flow guide groove, the through groove is inclined, and the upper end of the through groove is opposite to one end of the inner cavity groove that penetrates the side wall of the thimble body.
[0007] The key cap reverse oblique injection mold, wherein the inner cavity groove is cross-shaped and its four ends all penetrate the side wall of the thimble body, and any one end of the inner cavity groove that penetrates the side wall of the thimble body is opposite to the through groove and is located in the same vertical plane.
[0008] The utility model discloses the key cap reverse slope formula injection mold, wherein, the through groove is conical and its smaller end is adjacent with the upper mould groove, and the outlet height of the through groove is less than the outlet of one end of the lateral wall of the inner cavity groove through the thimble body.
[0009] The utility model discloses the key cap reverse slope formula injection mold, wherein, the outlet of the through groove is semicircle and its arc end faces down.
[0010] The utility model discloses the key cap reverse slope formula injection mold, wherein, the lower surface of the lower mould core is equipped with the lower flow groove corresponding the upper flow groove, and the lower flow groove and the upper flow groove jointly enclose and form the flow channel.
[0011] The utility model discloses the key cap reverse slope formula injection mold, wherein, the key cap reverse slope formula injection mold still includes the upper die holder and the lower die holder respectively fixed the upper mould core and the lower mould core, and the upper surface of the upper die holder is equipped with the injection glue inlet, and the upper mould core is equipped with the intercommunication flow channel that intercommunicates the injection glue inlet with the upper flow groove, and the thimble sleeve is through the lower die holder, and the lower end of the thimble body projects the thimble sleeve.
[0012] The utility model discloses the key cap reverse slope formula injection mold, wherein, the lower end of the lower die holder is vertically fixed with the guide pillar through the movable seat, and the movable seat is equipped with the buffer spring between the lower die holder, and the buffer spring is set up on the guide pillar.
[0013] The utility model discloses the key cap reverse slope formula injection mold, wherein, the lower end of the lower die holder is vertically fixed with the guide pillar through the movable seat, and the movable seat is equipped with the buffer spring between the lower die holder, and the buffer spring is set up on the guide pillar.
[0014] The utility model discloses the key cap reverse slope formula injection mold, wherein, the lower end of the lower die holder is vertically fixed with the guide pillar through the movable seat, and the movable seat is equipped with the buffer spring between the lower die holder, and the buffer spring is set up on the guide pillar.
[0015] The utility model discloses the key cap reverse slope formula injection mold, wherein, the lower end of the lower die holder is vertically fixed with the guide pillar through the movable seat, and the movable seat is equipped with the buffer spring between the lower die holder, and the buffer spring is set up on the guide pillar. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be further described below with reference to the drawings and embodiments, and the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the premise of not paying creative labor.
[0017] Figure 1 is the bird's-eye view of the explosion structure of the present application.
[0018] Figure 2 is Figure 1 is the enlarged view of the partial structure in
[0019] Figure 3 is Figure 3 is the enlarged view of the partial structure in
[0020] Figure 4 is Figure 1 is the bottom view of
[0021] Figure 5 is the enlarged view of the partial structure in Figure 4
[0022] Figure 6 is the longitudinal sectional view of the present application.
[0023] Figure 7 is Figure 6 is the enlarged view of the partial structure in DETAILED DESCRIPTION
[0024] The terms "first", "second", "third", and "fourth" and the like in the description and in the claims of the present application and the drawings referred to herein are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "comprising", "having", "including" and the like, are used herein to mean including but not limited to. As used herein, including in the claims "or" as used in a phrase for example a or b or c indicates any of the items a or b or c and likewise that the items are alternative (i.e. akin to a or b or c, but not solely a or b or c). Similarly, "and / or" as used in a phrase for example a and / or b indicates any of the items a or b, or both, and likewise that the items are alternative (i.e. akin to a or b, but not solely a or b). As used herein, including in the claims "at least one of a or b" means at least one of a or b, or both a and b. As used herein, including in the claims "one or more of a or b" means at least one of a or b, or both a and b.
[0025] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiments. It is explicitly contemplated that embodiments described herein can be combined with each other.
[0026] "Multiple" refers to two or more than two. "And / or", which describes the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally represents that the front and rear associated objects are a kind of "or" relationship.
[0027] Furthermore, the terms "up, down, left, right, upper end, lower end, longitudinal direction" and the like indicating the orientation are all with reference to the attitude position of the device or equipment described in the present scheme in the normal use.
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0029] The key cap reverse inclined type injection mold of the preferred embodiment of the present application, as shown in Figures 1-7 The upper surface of the lower die core 20 is longitudinally provided with a through hole 21, the through hole 21 is fixedly assembled with a ejector pin sleeve 30, when assembled in place, the outer side wall of the ejector pin sleeve 30 is tightly fitted with the inner side wall of the through hole 21; the ejector pin sleeve 30 is provided with an ejector pin body 40 matched with the inner cavity thereof, when assembled in place, the outer side wall of the ejector pin body 40 is coaxially and slidingly fitted with the inner side wall of the ejector pin sleeve 30; the ejector pin body 40 is provided with an inner cavity groove 41 on the top end face, the inner cavity groove 41 penetrates the side wall of the ejector pin body 40; the upper end of the ejector pin sleeve 30 is located in the through hole 21, the top end of the ejector pin body 40 extends out of the through hole 21, further, the top end face of the ejector pin sleeve 30 is provided with an annular protruding portion 31 matched with the side wall of the ejector pin body 40, the side wall of the annular protruding portion 31 away from the ejector pin body is an inclined surface; the lower surface of the upper die core 10 is provided with an upper cavity 11 corresponding to the upper end of the ejector pin body 40, when the mold is closed, the upper cavity 11, the side wall of the through hole 21, the top end face of the ejector pin sleeve 30, the outer side wall of the one end of the ejector pin body 40 extending out of the ejector pin sleeve 30 and the inner cavity groove 41 together form an injection cavity 50.
[0030] Further, the upper surface of the upper die core 10 is provided with an upper flow guide groove 12, and the inner wall of one end of the upper flow guide groove 12 is provided with a through groove 13 communicating with the upper cavity groove 11. The through groove 13 is inclined and its upper end is opposite to one end of the side wall of the inner cavity groove 41 penetrating the needle body 40. Thus, when the molten glue enters the upper cavity groove 11, part of the molten glue can be sprayed upwards into the inner cavity groove 41 in advance to avoid the generation of bubbles due to the simultaneous entry of a large amount of molten glue into the inner cavity groove 41, thereby ensuring the injection molding quality of the product.
[0031] In the embodiment, the inner cavity groove 41 is cross-shaped and penetrates the side wall of the needle body 40 at four ends. Any one end of the inner cavity groove 41 penetrating the side wall of the needle body 40 is opposite to the through groove 13 and is located in the same vertical plane, so as to ensure that the molten glue can enter the inner cavity groove 41 in the first time when it enters the upper cavity groove 11 through the through groove 13, and at the same time, can diffuse around and enter the through hole 21 and gradually fill the entire injection molding cavity from bottom to top.
[0032] In the embodiment, the through groove 13 is frustum-shaped and its smaller end is adjacent to the upper cavity groove 11. The height of the outlet 131 of the through groove 13 is less than the height of the outlet of one end of the inner cavity groove 41 penetrating the side wall of the needle body 40. Thus, the upper end side wall of the needle body 40 is used to divide the flow of the molten glue, so that part of the molten glue moves upwards into the inner cavity groove 41, and the other part of the molten glue moves downwards and circumferentially into the upper cavity groove 11 and the through hole 21.
[0033] In the embodiment, the outlet of the through groove 13 is semicircular and its arc-shaped end faces downward to reduce the water hole diameter of the injection molded part after the molten glue solidifies.
[0034] In the embodiment, the upper surface of the lower die core 20 is provided with a lower flow guide groove 22 corresponding to the upper flow guide groove 12, and the lower flow guide groove 22 and the upper flow guide groove 12 jointly enclose a flow guide channel 60, so as to facilitate the early processing and manufacturing and the later maintenance and cleaning.
[0035] In the embodiment, the mold further includes an upper die seat 70 and a lower die seat 80 respectively fixing the upper die core 10 and the lower die core 20. The upper surface of the upper die seat 70 is provided with an injection glue inlet 71, and the upper die core 10 is provided with a communication flow channel 14 communicating the injection glue inlet 71 and the upper flow guide groove 12. The injection glue inlet 71 and the communication flow channel 14 cooperate with the injection molding machine to ensure that the molten glue can smoothly enter the inside of the injection molding cavity 50.
[0036] Further, the ejector sleeve 30 penetrates the lower die seat 80, and the lower end of the ejector body 40 extends out of the ejector sleeve 30, wherein the lower end of the lower die seat 80 is vertically fixed with a guide column 90 penetrating an activity seat 110, the activity seat 110 is provided between the lower die seat 80 and a buffer spring 100, the buffer spring 100 is sleeved on the guide column 90, the lower end of the lower die seat 80 is provided with the activity seat 110, the ejector sleeve 30 is fixed on the activity seat 110, the lower end of the activity seat 110 is provided with a fixed seat 120, the fixed seat 120 is fixed with the lower end of the guide column 90, the lower end of the ejector body 40 is fixed with the fixed seat 120, in the actual processing process, the activity seat 110 is driven to move up and down by the mechanical arm of the injection molding machine, and then the ejector sleeve 30 can be pushed to move up and down, when demolding, the injection molding part can be ensured to smoothly separate from the ejector body 40 and the through hole 21 through the ejector sleeve 30.
[0037] In the embodiment, the fixed seat 120 is provided with a support seat 130 on both opposite sides of the activity seat 110 to support the lower die seat 80, so as to fix the upper die seat 70 and the fixed seat, and provide the activity space for the up and down movement of the activity seat 110.
[0038] It should be understood that the above description can be improved or changed by those skilled in the art, and all these improvements and changes shall belong to the protection scope of the appended claims of the utility model.
Claims
1. A keycap anti-slant injection mold, characterized in that, The mold includes an upper mold core and a lower mold core that are parallel to each other. A through hole is longitudinally provided in the lower mold core, and an ejector sleeve is fixedly installed within the through hole. An ejector body adapted to the inner cavity of the ejector sleeve is provided within the ejector sleeve. An inner cavity groove is provided on the top surface of the ejector body, penetrating the side wall of the ejector body. The upper end of the ejector sleeve is located within the through hole, and the top end of the ejector body extends out of the through hole. An upper mold groove is provided on the lower surface of the upper mold core, corresponding to the upper end of the ejector body. An upper guide groove is provided on the lower surface of the upper mold core, and a guide groove communicating with the upper mold groove is provided on the inner wall of the upper guide groove. The guide groove is inclined, and its upper end is opposite to the end of the inner cavity groove that penetrates the side wall of the ejector body.
2. The keycap anti-slant injection mold according to claim 1, characterized in that, The inner cavity groove is cross-shaped and its four ends all penetrate the side wall of the ejector pin body. Any end of the inner cavity groove that penetrates the side wall of the ejector pin body is opposite to the guide groove and both are located in the same vertical plane.
3. The keycap anti-slant injection mold according to claim 1, characterized in that, The guide groove is frustoconical in shape and its smaller end is adjacent to the upper groove. The outlet height of the guide groove is smaller than the outlet of the inner cavity groove that penetrates the side wall of the ejector pin body.
4. The keycap anti-slant injection mold according to claim 3, characterized in that, The outlet of the guide groove is semi-circular with its arc-shaped end facing downwards.
5. The keycap anti-slant injection mold according to claim 1, characterized in that, The lower mold core has a lower guide groove on its upper surface corresponding to the upper guide groove, and the lower guide groove and the upper guide groove together form a guide channel.
6. The keycap anti-slant injection mold according to any one of claims 1-5, characterized in that, The keycap anti-slant injection mold also includes an upper mold base and a lower mold base that fix the upper mold core and the lower mold core respectively. The upper surface of the upper mold base is provided with an injection gate. The upper mold core is provided with a connecting channel that connects the injection gate and the upper guide groove. The ejector sleeve passes through the lower mold base, and the lower end of the ejector body extends out of the ejector sleeve.
7. The keycap anti-slant injection mold according to claim 6, characterized in that, A guide post is vertically fixed at the lower end of the lower mold base, passing through the movable seat. A buffer spring is provided between the movable seat and the lower mold base, and the buffer spring is sleeved on the guide post.
8. The keycap anti-slant injection mold according to claim 7, characterized in that, A movable seat is provided below the lower mold base, the ejector sleeve is fixed on the movable seat, a fixed seat is provided below the movable seat, the fixed seat is fixed to the lower end of the guide post, and the lower end of the ejector body is fixed to the fixed seat.
9. The keycap anti-slant injection mold according to claim 8, characterized in that, The fixed base is provided with support seats on both opposite sides of the movable base to support the lower mold base.