Keycap mold ejection structure

Abstract

The utility model discloses a keycap mould ejection structure which comprises a lower mould assembly and an ejection mechanism, the lower mould assembly comprises a push plate and a plate B, a lower mould core is embedded in the push plate, the lower mould core is provided with a plurality of lower mould core convex parts, lower inserts are embedded in the lower mould core convex parts, the ejection mechanism comprises a first ejector pin plate and a second ejector pin plate, and the first ejector pin plate is connected with a first ejector pin; the upper end of the first ejector pin upwards extends out of the upper end of the first ejector pin plate and upwards penetrates through the plate B and the push plate in sequence to extend into the convex part of the lower mold core; the upper end of the first ejector pin is positioned on one side of the lower insert; the second ejector plate is connected with a second ejector; the upper end of the second ejector pin upwards extends out of the upper end of the second ejector pin plate and upwards penetrates through the first ejector pin plate, the plate B and the push plate in sequence to extend into the convex part of the lower mold core; the second ejector pin can transversely move relative to the lower insert; therefore, the upper button position of the key cap can be normally stripped from a mold after three times of ejection, a complete product is obtained, and the problem that a rear mold column position of the key cap is relatively long and is easy to stick to the mold is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of key cap mould technology, in particular to a key cap mould ejection structure. Background Art

[0002] Existing mechanical keyboards are usually made of shafts and keycaps. In order to meet market demand, manufacturers often produce a variety of keycaps for consumers to choose from. Most of the keycaps are produced through injection molds. There are many types of keyboards, and different types of keyboards need to be installed with different types of keycaps. The keycap is the tactile surface of the keyboard, usually a rectangular thin sheet structure. During the injection molding process of the keycap, after the keycap is formed in the cavity, it needs to be demolded.

[0003] Existing injection molds for keycaps usually include an upper mold assembly and a lower mold assembly, and an ejection mechanism is provided on the lower mold assembly. During the demolding process, the keycaps are ejected synchronously with the ejection mechanism while demolding. Although this method can complete the demolding of the keycaps, since some keycaps are provided with buckles, direct demolding will cause the buckles and the mold to interfere with each other, which may easily cause abnormal demolding and even fail to obtain a complete product. In addition, the rear mold column of the keycap is long and easy to stick to the mold.

[0004] Therefore, it is necessary to develop a new technology to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a keycap mold ejection structure, which can realize the normal ejection of the keycap upper buckle position from the mold after three ejections to obtain a complete product, and effectively solve the problem that the rear mold column of the keycap is long and easy to stick to the mold.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A keycap mold ejection structure comprises a lower mold assembly, the lower mold assembly comprises a push plate and a B plate stacked up and down in sequence, the push plate is inlaid with a lower mold core, the lower mold core is provided with a plurality of lower core convex parts for injection molding keycaps, the lower core convex parts are inlaid with lower inserts, and an ejection mechanism is arranged below the B plate; the ejection mechanism comprises a first ejector plate and a second ejector plate stacked up and down in sequence, the first ejector plate is connected with a first ejector, the first ejector is used to eject the keycap, and the lower end of the first ejector is embedded in the first ejector plate; the upper end of the first ejector extends upwardly out of the upper end of the first ejector plate, and passes through the B plate and the push plate upwardly in sequence and extends into the lower core convex part; the upper end of the first ejector is located on one side of the lower insert;

[0008] The second ejector plate is connected to a second ejector pin, which is used to eject the keycap, and the lower end of the second ejector pin is embedded in the second ejector plate; the upper end of the second ejector pin extends upwardly out of the upper end of the second ejector plate, and passes through the first ejector plate, the B plate, and the push plate in sequence upward to extend into the convex portion of the lower core; the upper end of the second ejector pin is located on one side of the lower insert; the second ejector pin can move laterally relative to the lower insert.

[0009] As a preferred solution, the upper end of the first ejector pin is spaced apart from the lower insert, the upper end of the second ejector pin is movably attached to one side of the lower insert, and the first ejector pin and the second ejector pin are spaced apart from each other.

[0010] As a preferred solution, four first ejector pins are provided corresponding to each of the lower core protrusions, and the four first ejector pins are arranged at a center-symmetrical spacing.

[0011] As a preferred solution, two second ejector pins are provided corresponding to each of the lower core protrusions, and the two second ejector pins are arranged symmetrically.

[0012] As a preferred solution, a guide groove extending in the up-down direction is formed on the outer side wall of the lower insert, and the upper end of the second ejector pin extends into the guide groove.

[0013] As a preferred solution, a recessed groove is formed on the upper end of the second ejector pin facing the lower insert, and a protrusion is formed on the keycap facing the second ejector pin, and the recessed groove is matched with the protrusion.

[0014] As a preferred embodiment, the keycap includes a column and a cap body connected to the upper end of the column, the upper end of the first ejector pin is provided with a first inclined surface inclined outward, and the upper end of the second ejector pin is provided with a second inclined surface inclined outward, the upper ends of the first ejector pin and the second ejector pin are used to abut against the lower end inside the cap body, and the first inclined surface and the second inclined surface are respectively adapted to the inner inclined surface of the inclined portion of the periphery of the cap body.

[0015] As a preferred solution, there are two first ejector plates, which are stacked up and down, and the first ejector plate located at the lower side is stacked on the upper end of the second ejector plate.

[0016] As a preferred solution, a slideway for moving the first ejector pin and the second ejector pin is provided inside the push plate and the B plate.

[0017] As a preferred solution, a limit block is laterally protruded on the side of the lower end of the second ejector facing away from the lower insert, and the second ejector plate is provided with a transverse limit groove, and the limit block is restricted in the transverse limit groove.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical scheme that the ejection mechanism mainly comprises a first ejector plate and a second ejector plate which are stacked up and down in sequence, and the first ejector plate and the second ejector plate are respectively connected with a first ejector and a second ejector, so that in the process of the first ejector and the second ejector pin ejecting the key cap upward, a three-time ejection method can be realized by the push plate, the first ejector plate and the first ejector pin cooperating with the second ejector plate and the second ejector pin. In this way, after three ejections, the upper buckle position of the key cap can be normally ejected from the mold to obtain a complete product, and the problem that the rear mold column of the key cap is long and easy to stick to the mold is effectively solved.

[0019] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the ejection mechanism of the embodiment of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the ejection mechanism of an embodiment of the utility model;

[0023] Figure 4 It is another partial structural schematic diagram of the ejection mechanism of the embodiment of the utility model;

[0024] Figure 5 It is a partial structural schematic diagram of an embodiment of the utility model;

[0025] Figure 6 It is another partial structural schematic diagram of an embodiment of the utility model;

[0026] Figure 7 It is another structural schematic diagram of an embodiment of the utility model;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of a key cap according to an embodiment of the utility model;

[0028] Fig. 9 is another three-dimensional structural schematic diagram of the key cap of an embodiment of the utility model;

[0029] Fig.10 It is another three-dimensional structural schematic diagram of the key cap of the embodiment of the utility model;

[0030] Fig.11 It is a schematic diagram of the ejection process of an embodiment of the utility model;

[0031] Fig.12 It is a partial structural schematic diagram of an embodiment of the utility model.

[0032] Description of the accompanying drawings:

[0033] 10. Push plate 20. B plate

[0034] 30, lower mold core 40, lower core convex part

[0035] 50. Lower insert 51. Guide groove

[0036] 60, first ejector plate 70, second ejector plate

[0037] 80. first ejector pin 81. first inclined surface

[0038] 90. Second ejector pin 91. Make way slot

[0039] 92. Second inclined surface 93. Limit block

[0040] 101, key cap 1011, bump

[0041] 1012. Cylinder 1013. Cap. DETAILED DESCRIPTION

[0042] Please refer to Figures 1 to 12 As shown, it shows the specific structure of an embodiment of the utility model.

[0043] A keycap mold ejection structure, including a lower mold assembly, the lower mold assembly includes a push plate 10 and a B plate 20 stacked up and down in sequence, the push plate 10 is inlaid with a lower mold core 30, the lower mold core 30 is provided with a plurality of lower core protrusions 40 for injection molding a keycap 101, the lower core protrusion 40 is inlaid with a lower insert 50, and an ejection mechanism is arranged below the B plate 20; the ejection mechanism includes a first ejector plate 60 and a second ejector plate 70 stacked up and down in sequence, the first ejector plate 60 is connected to a first ejector 80, the first ejector 80 is used to eject the keycap 101, the lower end of the first ejector 80 is embedded in the first ejector plate 60; the upper end of the first ejector 80 is upward The first ejector pin 80 extends out of the upper end of the first ejector plate 60, and passes through the B plate 20 and the push plate 10 in sequence upwards to extend into the lower core protrusion 40; the upper end of the first ejector pin 80 is located on one side of the lower insert 50; the second ejector plate 70 is connected to the second ejector pin 90, and the second ejector pin 90 is used to eject the keycap 101, and the lower end of the second ejector pin 90 is embedded in the second ejector plate 70; the upper end of the second ejector pin 90 extends out of the upper end of the second ejector plate 70 upwards, and passes through the first ejector plate 60, the B plate 20, and the push plate 10 in sequence upwards to extend into the lower core protrusion 40; the upper end of the second ejector pin 90 is located on one side of the lower insert 50; the second ejector pin 90 can move laterally relative to the lower insert 50.

[0044] like Figures 1 to 3 As shown, preferably, in this embodiment, there are two first ejector plates 60, and the two first ejector plates 60 are stacked up and down, and the first ejector plate 60 located at the lower side is stacked on the upper end of the second ejector plate 70, and the lower end of the first ejector 80 is embedded in the lower first ejector plate 60. In addition, the push plate 10 and the B plate 20 are both provided with slideways (not shown in the figure) for the first ejector 80 and the second ejector 90 to move up and down.

[0045] like Figure 5 and Figure 6 As shown, the upper end of the first ejector pin 80 is arranged at a distance from the lower insert 50, and the upper end of the second ejector pin 90 is attached to one side of the lower insert 50 so as to be movable up and down. Preferably, a guide groove 51 extending in the up and down direction is formed on the outer side wall of the lower insert 50, and the upper end of the second ejector pin 90 extends into the guide groove 51. The first ejector pin 80 and the second ejector pin 90 are arranged at a distance.

[0046] like Figure 5 As shown, four first ejector pins 80 are provided for each lower core protrusion 40, and the four first ejector pins 80 are arranged with a central symmetrical spacing. Two second ejector pins 90 are provided for each lower core protrusion 40, and the two second ejector pins 90 are arranged with a symmetrical spacing, and the second ejector pin 90 is located between two adjacent first ejector pins 80 on the same side.

[0047] like Figures 4 to 10 As shown, the key cap 101 includes a column 1012 and a cap body 1013 connected to the upper end of the column 1012, the upper end of the first ejector pin 80 is provided with a first inclined surface 81 inclined outward, and the upper end of the second ejector pin 90 is provided with a second inclined surface 92 inclined outward, the upper ends of the first ejector pin 80 and the second ejector pin 90 are used to abut against the lower end in the cap body 1013, and the first inclined surface 81 and the second inclined surface 92 are respectively adapted to the inner inclined surface of the inclined portion of the periphery of the cap body 1013. And, in this embodiment, a recessed groove 91 is provided on the side of the upper end of the second ejector pin 90 facing the lower insert 50, and a convex block 1011 is provided on the side of the key cap 101 facing the second ejector pin 90, and the recessed groove 91 is adapted to the convex block 1011, and there are two convex blocks 1011, which are symmetrically arranged on two opposite sides of the cap body 1013.

[0048] like Figure 4 and Figure 5 As shown, a limit block 93 is laterally protruded at the lower end of the second ejector 90 on the side facing away from the lower insert 50, and the second ejector plate 70 is provided with a transverse limit groove (not shown in the figure), and the limit block 93 is limited in the transverse limit groove. In this way, the limit block 93 can be limited by the inner top wall of the transverse limit groove when the second ejector 90 moves up and down, and the limit block 93 is limited by the inner side wall of the transverse limit groove when the second ejector 90 swings laterally.

[0049] Furthermore, in this embodiment, a lower template (not shown in the figure) is arranged below the second ejector plate 70, and square irons (not shown in the figure) are arranged on both sides of the upper end of the lower template. The lower end of the B plate 20 abuts against the upper end of the square iron, and a receiving space is formed between the B plate 20, the two square irons and the lower template, and the first ejector plate 60 and the second ejector plate 70 are located in the receiving space.

[0050] like Fig.11 As shown, the ejection process is roughly as follows:

[0051] First ejection A: When the injection molding is completed and the mold is opened and the AB plate 20 is opened, the push plate 10, the first ejector plate 60 and the second ejector plate 70 are ejected 10MM at the same time. At this time, the lower insert 50 does not move, and the first ejector pin 80, the second ejector pin 90 and the key cap 101 are ejected 10MM upward at the same time;

[0052] Second ejection B: The lower insert 50 does not move, and the first ejector plate 60 and the second ejector plate 70 are ejected upward by 16 MM at the same time. At this time, the first ejector pin 80, the second ejector pin 90 and the key cap 101 are ejected upward by 16 MM at the same time;

[0053] The third ejection C: the second ejector pin 90 swings outward by 0.8MM to separate the second ejector pin 90 from the keycap 101. Then, the first ejector plate 60 drives the first ejector pin 80 to be ejected upward by 26MM, so that the keycap 101 is demolded. In this way, the ejection is completed.

[0054] To sum up, the design focus of the utility model is that it is mainly through the ejection mechanism including a first ejector plate and a second ejector plate stacked up and down in sequence, and the first ejector plate and the second ejector plate are respectively connected to the first ejector and the second ejector, so that in the process of the first ejector and the second ejector ejecting the keycap upward, the push plate, the first ejector plate and the first ejector cooperate with the second ejector plate and the second ejector to realize three-time ejection. In this way, after three ejections, the upper buckle position of the keycap can be normally ejected from the mold to obtain a complete product, effectively solving the problem that the rear mold column of the keycap is long and easy to stick to the mold.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A keycap mold ejection structure, comprising a lower mold assembly, the lower mold assembly comprising a push plate and a B plate stacked up and down in sequence, the push plate is inlaid with a lower mold core, the lower mold core is provided with a plurality of lower core convex parts for injection molding keycaps, the lower core convex parts are inlaid with lower inserts, and an ejection mechanism is provided below the B plate; characterized in that: The ejection mechanism comprises a first ejector plate and a second ejector plate which are stacked up and down in sequence, the first ejector plate is connected with a first ejector pin, the first ejector pin is used to eject the keycap, the lower end of the first ejector pin is embedded in the first ejector plate; the upper end of the first ejector pin extends upwardly out of the upper end of the first ejector plate, and passes through the B plate and the push plate in sequence upwardly and extends into the lower core convex part; the upper end of the first ejector pin is located on one side of the lower insert; The second ejector plate is connected to a second ejector pin, which is used to eject the keycap, and the lower end of the second ejector pin is embedded in the second ejector plate; the upper end of the second ejector pin extends upwardly out of the upper end of the second ejector plate, and passes through the first ejector plate, the B plate, and the push plate in sequence upward to extend into the convex portion of the lower core; the upper end of the second ejector pin is located on one side of the lower insert; the second ejector pin can move laterally relative to the lower insert.

2. A keycap mold ejection structure according to claim 1, characterized in that: The upper end of the first ejector pin is arranged at a distance from the lower insert, the upper end of the second ejector pin is attached to one side of the lower insert so as to be movable up and down, and the first ejector pin and the second ejector pin are arranged at a distance.

3. The keycap mold ejection structure according to claim 1, characterized in that: Four first ejector pins are provided corresponding to each of the lower core protrusions, and the four first ejector pins are arranged at a center-symmetrical spacing.

4. The keycap mold ejection structure according to claim 1, characterized in that: Two second ejector pins are provided corresponding to each of the lower core protrusions, and the two second ejector pins are arranged at symmetrical intervals.

5. The keycap mold ejection structure according to claim 1, characterized in that: A guide groove extending in the up-down direction is formed on the outer side wall of the lower insert, and the upper end of the second ejector pin extends into the guide groove.

6. The keycap mold ejection structure according to claim 1, characterized in that: A recessed groove is formed on the side of the upper end of the second ejector pin facing the lower insert, and a convex block is formed on the side of the key cap facing the second ejector pin, and the recessed groove is matched with the convex block.

7. The keycap mold ejection structure according to claim 1, characterized in that: The keycap includes a column and a cap body connected to the upper end of the column, the upper end of the first ejector pin is provided with a first inclined surface inclined outward, and the upper end of the second ejector pin is provided with a second inclined surface inclined outward, the upper ends of the first ejector pin and the second ejector pin are used to abut against the lower end inside the cap body, and the first inclined surface and the second inclined surface are respectively adapted to the inner inclined surface of the inclined portion of the periphery of the cap body.

8. The keycap mold ejection structure according to claim 1, characterized in that: There are two first ejector plates, which are stacked up and down, and the first ejector plate located at the lower side is stacked on the upper end of the second ejector plate.

9. The keycap mold ejection structure according to claim 1, characterized in that: The push plate and the B plate are both provided with slideways for the first ejector pin and the second ejector pin to move.

10. The keycap mold ejection structure according to claim 1, characterized in that: A limiting block is laterally protruded at the lower end of the second ejector pin on one side facing away from the lower insert, and a transverse limiting groove is provided on the second ejector pin plate, and the limiting block is limited in the transverse limiting groove.

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