CN212736878U

CN212736878U - Electronic organ key injection mold

Info

Publication number: CN212736878U
Application number: CN202021244852.2U
Authority: CN
Inventors: 杨亚
Original assignee: Weifang Tuge Electronic Technology Co ltd
Current assignee: Weifang Tuge Electronic Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-19
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to an electronic organ key injection mold, which belongs to the technical field of injection molds, and the key point of the technical scheme is that the injection mold comprises an upper mold and a lower mold, a plurality of cavities for injection molding and runners for communicating the cavities are arranged between the upper mold and the lower mold, a plurality of injection molding holes communicated with the runners are arranged on the upper surface of the upper mold, and the injection molding holes comprise a central injection molding hole and a plurality of local injection molding holes; the central injection molding hole is positioned at the central position of the upper mold, the mold cavities are distributed around the central injection molding hole in a surrounding manner, and the length directions of the mold cavities are arranged along the radial direction of the surrounding center; the flow channel comprises an arc flow channel which is communicated with adjacent cavities in the circumferential direction and a connecting flow channel which is communicated with adjacent cavities in the radial direction; the local injection molding holes are uniformly distributed around the central injection molding hole in the circumferential direction; the utility model discloses it is even to make each die cavity annotate the material, and the shaping of part is of high quality.

Description

Electronic organ key injection mold

Technical Field

The utility model relates to an injection mold technical field especially relates to an electronic organ key injection mold.

Background

The electronic organ is a musical instrument which is deeply liked by people in daily life. The keys of the electronic organ are usually made of plastic and are produced by injection molding of an injection mold. The keys of the electronic organ comprise black keys and white keys, and the keys are rectangular, so when the keys of the electronic organ are designed by an injection mold, a plurality of cavities of the mold are generally arranged in a matrix manner, and a plurality of injection molding holes are arranged in a matrix manner along the length direction and the width direction of the mold. This kind of setting because there is the difference in the die cavity apart from the hole of moulding plastics, when the key quantity that needs one shot forming is more, the die cavity part appears lacking the material easily, waters phenomenon such as not enough, influences injection moulding quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic organ key injection mold, each die cavity is annotated the material and is even, and the shaping of part is of high quality.

The above technical purpose of the present invention can be achieved by the following technical solutions: the injection mold for the keys of the electronic organ comprises an upper mold and a lower mold, wherein a plurality of cavities for injection molding and runners for communicating the cavities are arranged between the upper mold and the lower mold, a plurality of injection molding holes communicated with the runners are formed in the upper surface of the upper mold, and each injection molding hole comprises a central injection molding hole and a plurality of local injection molding holes; the central injection molding hole is positioned at the central position of the upper mold, the mold cavities are distributed around the central injection molding hole in a surrounding manner, and the length directions of the mold cavities are arranged along the radial direction of the surrounding center; the flow channel comprises an arc flow channel which is communicated with adjacent cavities in the circumferential direction and a connecting flow channel which is communicated with adjacent cavities in the radial direction; the local injection molding holes are uniformly distributed around the central injection molding hole in the circumferential direction.

Through the technical scheme, the die cavity encircles around central injection molding hole and distributes and the length direction of die cavity is along radially setting around the center, arc runner through the adjacent die cavity of circumference intercommunication and the connecting channel of the adjacent die cavity of radial intercommunication communicate each die cavity each other, through the central injection molding hole with around the local injection molding hole of central injection molding hole circumference equipartition mould plastics simultaneously, thereby can the efficient even with liquid material pour into each die cavity into, thereby reduce to appear lacking the material, water phenomenons such as not enough, ensure that the shaping part has good quality.

Preferably, the upper die comprises an upper die half positioned at the upper part and a lower die half positioned at the lower part, and the upper die half and the lower die half are detachably connected; an installation cavity is arranged between the upper half die and the lower half die, and a heating assembly is arranged in the installation cavity.

Through above-mentioned technical scheme, through the inside at last mould sets up heating element, and then heats last mould through heating element to reduce the cooling that takes place in the hole of moulding plastics at the in-process feed liquid of moulding plastics.

Preferably, the upper half mold and the lower half mold are connected by bolts.

Through the technical scheme, the upper half die and the lower half die are connected through the bolts, and the upper half die and the lower half die are convenient to mount and dismount.

Preferably, the lower surface of the upper half mold is provided with a plurality of positioning blocks, and the upper surface of the lower half mold is provided with a plurality of positioning grooves for being inserted into the positioning blocks.

Through the technical scheme, the positioning block and the positioning groove are inserted, so that the upper half die and the lower half die can be conveniently and quickly aligned and positioned.

Preferably, the positioning block is of a trapezoidal table shape with the cross section gradually decreasing from top to bottom.

Through above-mentioned technical scheme, the locating piece adopts the ladder platform type that the cross section from the top down reduces gradually to it is more convenient when pegging graft locating piece and constant head tank.

Preferably, a pouring gate insert is embedded in the injection molding hole.

Through above-mentioned technical scheme, through being equipped with the runner inserts at the hole is embedded to mould plastics, and then when moulding plastics, prevent to mould plastics the liquid material and enter into the handing-over department of upper half mould and lower half mould.

Preferably, the injection molding hole is a stepped hole with a cross section which is reduced from top to bottom in sequence.

Through above-mentioned technical scheme, the hole of moulding plastics adopts the step hole that the cross section from the top down reduces in proper order, and then can conveniently install the location to watering the inserts.

Preferably, the heating component adopts an electric heating pipe.

Through the technical scheme, the heating assembly adopts the electric heating pipe, so that the die can be heated efficiently and conveniently.

Preferably, the upper surface of the upper die at the injection hole is provided with a storage tank.

Through above-mentioned technical scheme, the stock chest has been seted up through last mould upper surface at the hole department of moulding plastics, and then can keep in the liquid material of moulding plastics through the stock chest, reduces the liquid material overflow of moulding plastics to the upper surface of last mould.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of an electronic organ key injection mold.

Fig. 2 is a schematic diagram of the cavity location distribution.

Fig. 3 is a schematic structural view of the connection relationship of the upper and lower mold halves.

FIG. 4 is a schematic view of a runner insert configuration.

Wherein, 1, an upper die; 11. an upper half mold; 12. a lower half mold; 13. a mounting cavity; 14. an electric heating tube; 15. positioning blocks; 16. a storage tank; 2. a lower die; 21. positioning a groove; 3. a cavity; 4. a central injection molding hole; 5. local injection molding holes; 6. an arc-shaped flow passage; 7. connecting the flow channel; 8. a runner insert.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

A key injection mold of an electronic organ, referring to fig. 1 and 2, comprises an upper mold 1 and a lower mold 2, wherein a plurality of cavities 3 for injection molding and runners for communicating the cavities 3 are arranged between the upper mold 1 and the lower mold 2. The upper surface of the upper die 1 is provided with a plurality of injection molding holes communicated with the flow channel, and the upper surface of the upper die 1 at the injection molding holes is provided with a storage tank 16. The injection molding holes comprise a central injection molding hole 4 and a plurality of local injection molding holes 5; the central injection molding hole 4 is positioned at the central position of the upper mold 1, the mold cavities 3 are distributed around the central injection molding hole 4 in a surrounding mode, and the length directions of the mold cavities 3 are arranged along the radial direction of the surrounding center. The flow channel comprises an arc-shaped flow channel 6 which is communicated with the adjacent cavity 3 in the circumferential direction and a connecting flow channel 7 which is communicated with the adjacent cavity 3 in the radial direction; the local injection molding holes 5 are uniformly distributed around the central injection molding hole 4 in the circumferential direction. Through arranging fashioned die cavity 3 ring, mould plastics through 4 local injection holes 5 that cooperate circumference to distribute of center injection hole to the die cavity 3, and then can be high-efficient even messenger's liquid material fill die cavity 3. The storage tank 16 can temporarily store the injection molding liquid material, and the overflow of the liquid material is reduced.

Referring to fig. 1 and 3, the upper mold 1 includes an upper mold half 11 located at an upper portion and a lower mold half 12 located at a lower portion, and the upper mold half 11 and the lower mold half 12 are detachably coupled. An installation cavity 13 is arranged between the upper half die 11 and the lower half die 12, and a heating assembly is arranged in the installation cavity 13. The heating assembly employs an electrically heated tube 14. Through the setting of electric heating pipe 14, and then can heat last mould 1 when electronic organ key injection mold uses, and then reduce the temperature loss of the liquid material of moulding plastics in the hole of moulding plastics. The upper surface of the upper half die 11 is provided with a plurality of step holes, the upper surface of the lower half die 12 is provided with a plurality of thread mounting holes, and when the upper half die 11 and the lower half die 12 are aligned, the step holes and the thread mounting holes are aligned one by one. The upper mold half 11 and the lower mold half 12 are then screwed together by using bolts that are threadedly engaged with the threaded mounting holes. The upper half die 11 and the lower half die 12 are connected by threads, so that the upper half die 11 and the lower half die 12 can be conveniently and quickly mounted and dismounted.

Referring to fig. 1 and 3, the lower surface of the upper mold half 11 is provided with a plurality of positioning blocks 15, and the upper surface of the lower mold half 12 is provided with a plurality of positioning grooves 21 for being inserted into the positioning blocks 15. The positioning block 15 is of a trapezoidal shape with a cross section gradually decreasing from top to bottom. The positioning block 15 is inserted into the positioning groove 21, so that the upper half mold 11 and the lower half mold 12 can be conveniently and efficiently installed and aligned.

Referring to fig. 3 and 4, the injection molding hole is a stepped hole with a cross section decreasing from top to bottom, and a pouring gate insert 8 is embedded in the injection molding hole. By arranging the runner insert 8, liquid materials in the injection molding process can well enter the cavity 3, and the liquid materials are prevented from entering the connecting position of the upper half die 11 and the lower half die 12. The step-hole-shaped injection molding hole is adopted, so that the pouring gate insert 8 can be conveniently and well installed and positioned.

The specific implementation principle of this embodiment is as follows:

when injection molding is carried out, the upper die 1 is heated through the electric heating pipe 14, so that good environment temperature is achieved in the injection molding hole, and heat loss caused by the injection molding liquid flowing through the injection molding hole is reduced. Synchronous injection molding is carried out through the central injection molding hole 4 and the local injection molding hole 5, and then liquid materials sequentially enter each cavity 3 through the arc-shaped flow channel 6 and the connecting flow channel 7, so that the injection molding is carried out on each cavity 3 efficiently and uniformly.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides an electronic organ key injection mold, includes last mould (1) and lower mould (2), goes up and is provided with a plurality of die cavity (3) that are used for injection moulding and is used for the runner of each die cavity (3) of intercommunication between mould (1) and lower mould (2), the upper surface of going up mould (1) sets up the hole of moulding plastics of a plurality of and runner intercommunication, its characterized in that: the injection molding holes comprise a central injection molding hole (4) and a plurality of local injection molding holes (5); the central injection molding hole (4) is positioned at the central position of the upper mold (1), the mold cavities (3) are distributed around the central injection molding hole (4) in a surrounding manner, and the length direction of the mold cavities (3) is arranged along the radial direction of the surrounding center; the flow channel comprises an arc-shaped flow channel (6) which is communicated with the adjacent cavity (3) in the circumferential direction and a connecting flow channel (7) which is communicated with the adjacent cavity (3) in the radial direction; the local injection molding holes (5) are uniformly distributed around the central injection molding hole (4) in the circumferential direction.

2. The key injection mold for electronic organ of claim 1, wherein: the upper die (1) comprises an upper half die (11) positioned at the upper part and a lower half die (12) positioned at the lower part, and the upper half die (11) and the lower half die (12) are detachably connected; an installation cavity (13) is arranged between the upper half die (11) and the lower half die (12), and a heating assembly is arranged in the installation cavity (13).

3. The key injection mold for electronic organ of claim 2, wherein: the upper half die (11) and the lower half die (12) are connected by bolts.

4. The key injection mold for electronic organ of claim 3, wherein: the lower surface of the upper half die (11) is provided with a plurality of positioning blocks (15), and the upper surface of the lower half die (12) is provided with a plurality of positioning grooves (21) which are used for being inserted into the positioning blocks (15).

5. The key injection mold for electronic organ of claim 4, wherein: the positioning blocks (15) are in a ladder-shaped shape with the cross section gradually reduced from top to bottom.

6. The key injection mold for electronic organ of claim 2, wherein: and a pouring gate insert (8) is embedded in the injection molding hole.

7. The key injection mold for electronic organ of claim 6, wherein: the injection molding hole is a stepped hole with a cross section which is reduced from top to bottom in sequence.

8. The key injection mold for electronic organ of claim 2, wherein: the heating component adopts an electric heating pipe (14).

9. The key injection mold for electronic organ of claim 1, wherein: and a storage trough (16) is formed in the upper surface of the upper die (1) at the injection hole.