Forming mold of silica gel key

Abstract

The forming die comprises an upper die and a lower die, the upper surface of the lower die is provided with a groove used for forming a key, the upper surface of the lower die is further provided with a containing groove, the front end of the containing groove is an open end, a pinch bar is detachably installed in the containing groove, the upper surface of the pinch bar is flush with the upper surface of the lower die, and the upper surface of the pinch bar is connected with the lower die. The tail end of the pinch bar is exposed out of the front side face of the lower die. If the silica gel keys and the silica gel film excess materials are difficult to directly detach from the lower die under the action of atmospheric pressure, the pinch bar can be lifted upwards, so that the silica gel film excess materials on the pinch bar are separated from the lower die firstly, and then the remaining silica gel keys and the remaining silica gel film excess materials can be detached along the separated part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silica gel key, especially to a kind of forming mould of silica gel key. BACKGROUND

[0002] Key is applied in electronic calculator, remote control system, telephone, wireless telephone, computer keyboard, learning machine key, password key, digital product etc., the key of current generally is hard plastic material or soft silica gel material.

[0003] When forming silica gel key, it can be formed by the way of injecting molten silica gel into mould and pressure casting, or hot-pressing after loading solid silica gel particles or silica gel strip into mould, in order to improve the working efficiency of hot-pressing forming mould, generally multiple cavities are arranged in mould, and multiple silica gel keys are formed simultaneously, such as 12 cavities per mould, 16 cavities per mould and so on, after cooling and setting, all silica gel keys are connected on a piece of silica gel film, and need to be taken out after mould opening, however, just after mould opening, silica gel key, silica gel film between silica gel keys and upper mould or lower mould may be very close, at this time, it is difficult to detach silica gel key from mould. CONTENT OF UTILITY MODEL

[0004] Therefore, the utility model aims at providing a silica gel key forming mould facilitating discharging.

[0005] The utility model discloses a technical scheme that is adopted to solve the technical problems is as follows:

[0006] A silica gel key forming mould, comprising an upper mould and a lower mould, the upper surface of the lower mould is provided with a groove for forming key, the upper surface of the lower mould is further provided with a containing groove, the front end of the containing groove is an open end, a pry bar is detachably installed in the containing groove, the upper surface of the pry bar is flush with the upper surface of the lower mould, and the end of the pry bar is exposed to the front side of the lower mould.

[0007] In a preferred scheme of the utility model, the left and right side faces of the pry bar are respectively attached to the inner side faces of the two sides of the containing groove.

[0008] In a preferred scheme of the utility model, the bottom surface of the containing groove is provided with a gas guide groove, and the front end of the gas guide groove is an open end.

[0009] In a preferred scheme of the utility model, the front side of the lower mould is provided with a gap notch, the front end of the pry bar is located in the gap notch, and a hand buckle groove is formed between the pry bar and the bottom surface of the gap notch.

[0010] In a preferred scheme of the utility model, a magnetic force mechanism capable of limiting pry bar from escaping from the containing groove is arranged between the pry bar and the lower mould.

[0011] In a preferred scheme of the utility model, the magnetic mechanism includes the magnet arranged in the accommodating groove and capable of attracting the crowbar.

[0012] In a preferred scheme of the utility model, the edge of the upper die lower surface or the edge of the lower die lower surface is provided with a mold opening gap.

[0013] The utility model discloses the beneficial effect is: because the recess for forming the key is arranged on the lower die, therefore after mold opening, the silicone key, the silicone film excess material between the silicone key will be pasted on the lower die, if under the action of atmospheric pressure, lead to difficultly directly unloading the silicone key and the silicone film excess material from the lower die, then can lift the crowbar upwards, make the silicone film excess material above the crowbar first and the lower die separate, then can along the part that has separated, remove the remaining silicone key and the silicone film excess material. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the perspective view of the utility model;

[0015] Figure 2 It is the exploded view of the utility model;

[0016] Figure 3 It is Figure 2 The enlarged view of part A in Fig.

[0017] Figure 4 It is the sectional view of the utility model. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the utility model are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), if the specific posture changes, then the directional indications also change accordingly. In addition, the description of "preferred", "suboptimal" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or suggesting the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "preferred", "suboptimal" can explicitly or implicitly include at least one of the features.

[0020] Referring to Figures 1 to 4The utility model provides a kind of forming mould of silica gel button, including upper die 1 and lower die 2, the upper surface of lower die 2 is provided with the recess 21 for forming button, the upper surface of lower die 2 is also provided with accommodating groove 22, the front end of accommodating groove 22 is open end, pry bar 3 is detachably installed in accommodating groove 22, the upper surface of pry bar 3 is flush with the upper surface of lower die 2, the end of pry bar 3 is exposed to the front side of lower die 2.

[0021] Since the recess 21 for forming button is arranged on lower die 2, after mold opening, silica gel button, silica gel film excess material between silica gel buttons will be attached to lower die 2, if under the action of atmospheric pressure, it is difficult to directly unload silica gel button and silica gel film excess material from lower die 2, pry bar 3 can be lifted upwards, so that the silica gel film excess material above pry bar 3 is separated from lower die 2 first, then the remaining silica gel button and silica gel film excess material can be removed along the separated part.Workpiece is removed, pry bar 3 is installed back in accommodating groove 22, and then silica gel raw material can be installed in upper die 1 and lower die 2 again, to produce silica gel button again.

[0022] Preferably, the left and right sides of pry bar 3 are attached to the inner sides of the two sides of accommodating groove 22 respectively.The cross section of pry bar 3 can be set as a trapezoidal shape with the upper part wider than the lower part, or a hexagonal shape, which can be regarded as being composed of an upper rectangular part and a lower trapezoidal part with the upper part wider than the lower part.

[0023] Further, a gas guide groove 221 is arranged on the bottom surface of accommodating groove 22, which extends from the front end of accommodating groove 22 to the rear end of accommodating groove 22, and the front end of gas guide groove 221 is an open end.The design of gas guide groove 221 allows air to pass between pry bar 3 and the bottom surface of accommodating groove 22, avoiding the formation of a negative pressure zone between pry bar 3 and the bottom surface of accommodating groove 22, which is compressed by atmospheric pressure.

[0024] Further, a gap 23 is arranged on the front side of lower die 2, and the front end of pry bar 3 is located in gap 23, forming a hand slot between pry bar 3 and the bottom surface of gap 23.This design allows the user's fingers to extend into the hand slot to lift pry bar 3 upwards.

[0025] In order to keep pry bar 3 stable after being installed in accommodating groove 22, a magnetic mechanism is arranged between pry bar 3 and lower die 2 to limit pry bar 3 from coming out of accommodating groove 22.Preferably, the magnetic mechanism includes a magnet 4 arranged in accommodating groove 22.Pry bar 3 is made of ferrous alloy that can be attracted by magnet 4, or a ferrous block that can be attracted by magnet 4 is arranged on pry bar 3.Pry bar 3 is attracted by the magnetic force of magnet 4 to keep it stable in accommodating groove 22.

[0026] Further, in order to facilitate mold opening, an opening gap 100 is arranged on the edge of the lower surface of upper die 1 or the edge of the lower surface of lower die 2.

[0027] The above are only preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields are included in the patent protection range of the present application.

Claims

1. A molding die for silicone buttons, characterized in that, The mould comprises an upper mould (1) and a lower mould (2), the upper surface of the lower mould (2) is provided with a groove (21) for forming a key, the upper surface of the lower mould (2) is also provided with a receiving groove (22), the front end of the receiving groove (22) is an open end, a crowbar (3) is detachably installed in the receiving groove (22), the upper surface of the crowbar (3) is flush with the upper surface of the lower mould (2), and the end of the crowbar (3) is exposed on the front side of the lower mould (2).

2. The molding die for a silicone rubber key according to claim 1, wherein The left and right side surfaces of the crowbar (3) are respectively attached to the inner side surfaces of the two sides of the receiving groove (22).

3. The molding die for a silicone rubber key according to claim 1 or 2, wherein The bottom surface of the receiving groove (22) is provided with an air guide groove (221), and the front end of the air guide groove (221) is an open end.

4. The molding die for a silicone rubber key according to claim 1, wherein The front side of the lower mould (2) is provided with a gap notch (23), the front end of the crowbar (3) is located in the gap notch (23), and a hand buckle groove is formed between the crowbar (3) and the bottom surface of the gap notch (23).

5. The molding die for a silicone rubber key according to claim 1, wherein A magnetic mechanism capable of limiting the crowbar (3) from being pulled out of the receiving groove (22) is arranged between the crowbar (3) and the lower mould (2).

6. The molding die for a silicone rubber key according to claim 5, wherein The magnetic mechanism comprises a magnet (4) arranged in the receiving groove (22) and capable of attracting the crowbar (3).

7. The molding die for a silicone rubber key according to claim 1, wherein The edge of the lower surface of the upper mould (1) or the edge of the lower surface of the lower mould (2) is provided with a mould opening notch (100).

Images