CN201317080Y

CN201317080Y - Injection molding device

Info

Publication number: CN201317080Y
Application number: CNU2008200955722U
Authority: CN
Inventors: 张治安
Original assignee: DONGGUAN SHEN AN PLASTIC MOLD Co Ltd
Current assignee: DONGGUAN SHEN AN PLASTIC MOLD Co Ltd
Priority date: 2008-07-16
Filing date: 2008-07-16
Publication date: 2009-09-30
Anticipated expiration: 2018-07-16

Abstract

An injection molding device comprises a front mold, a rear mold, an ejection module, a first sprue and a second sprue. When the rear mold and the front mold are in a first position, the rear mold and the front mold are matched with each other to form a first cavity, and the first sprue is communicated with the first cavity and injects a first plastic into the first cavity to form a first plastic part; and when the rear mold and the front mold are in a second position, the rear mold and the front mold are matched with each other to form a second cavity, and the second sprue is communicated with the second cavity and injects a second plastic into the second cavity to form a second plastic part. The injection molding device also includes a rotational module; and the front mold fixed with the rotational module can rotate between the first position and the second position along with the rotational module. The first plastic part is attached to the front mold after molding; the first and the second plastic parts are attached to the rear mold after the second plastic part is molded; and the ejection module is arranged on the rear mold. The injection molding device has the advantage of high molding efficiency.

Description

Device for injection moulding

Technical field

The utility model relates to a kind of device for injection moulding, especially about a kind of dual-color plastic device for injection moulding.

Background technology

The dual-color plastic ejection formation is meant two kinds of plastics successively is expelled in the mould under certain condition, thereby forms the plastic product that two kinds of different materials mutually combine and are integral.

The device that the dual-color plastic ejection formation is adopted generally comprises front mould and back mould.Front mould is oppositely arranged with the back mould, and front mould and back mould first die cavity and second die cavity that match and can be formed for the moulding plastics product.First die cavity is used for first parts of plastics of moulding dual-color plastic product, and second die cavity is used for second parts of plastics of moulding dual-color plastic product.After first parts of plastics of dual-color plastic product formed, first parts of plastics was attached on the mould of back.Then, back mould rotates and matches with front mould and forms second die cavity, and first parts of plastics also correspondence is positioned at second die cavity, forms second parts of plastics of dual-color plastic product then in second die cavity.Like this, second parts of plastics combines with second parts of plastics and makes needed dual-color plastic product, and this dual-color plastic product is attached on the mould of back.At last, the dual-color plastic product is ejected get final product by the thimble that is arranged at the back mould.

Adopt the production process of said apparatus, because first parts of plastics is attached to the back mould after forming, the dual-color plastic product also is attached to the back mould after the moulding, and thimble is arranged at the back mould; After a dual-color plastic formed product, need earlier the dual-color plastic product to be ejected to rotate the back mould,, can carry out the production of next product so that first parts of plastics of another dual-color plastic product is positioned at second die cavity, production process expends time in longer, and shaping efficiency is low.

Summary of the invention

In view of the foregoing, be necessary the device for injection moulding that provides a kind of shaping efficiency higher.

A kind of device for injection moulding, it comprises first mould, second mould, eject module, first cast gate and second cast gate, when second mould and first mould are in primary importance, second mould matches with first mould and forms first die cavity, and first cast gate is connected with first die cavity and can injects first plastics to form first parts of plastics in first die cavity; When second mould and first mould are in the second place, second mould matches with first mould and forms second die cavity, second cast gate is connected with second die cavity and can injects second plastics to form second parts of plastics in second die cavity, described device for injection moulding also comprises a rotating module, first mould is fixed in rotating module and can rotates between the primary importance and the second place with rotating module, is attached to first mould after the first parts of plastics moulding; After the second parts of plastics moulding, first parts of plastics and second parts of plastics are attached to second mould, and the described module that ejects is arranged at second mould.

In the above-mentioned device for injection moulding, after the first parts of plastics moulding, be attached to first mould after the first parts of plastics moulding, rotating module drives the rotation of first mould and makes first parts of plastics be positioned at the second corresponding die cavity; And when the second parts of plastics moulding finish and die sinking after, first parts of plastics and second parts of plastics are attached to second mould, the thimble that be arranged at second mould this moment can directly eject the dual-color plastic product after the moulding, simultaneously, rotating module can drive first mould and rotate, to carry out moulding next time, in the operation process, the dual-color plastic product ejects with the rotation of mould and carries out simultaneously, need not to rotate mould again after product such as dual-color plastic such as grade ejects, and has shortened the production cycle.Therefore, above-mentioned device for injection moulding has the shaping efficiency advantage of higher.

Description of drawings

Fig. 1 is the decomposing schematic representation of the device for injection moulding of the utility model preferred embodiment.

Fig. 2 is the assembling schematic diagram of device for injection moulding shown in Figure 1.

Fig. 3 is the schematic diagram of device for injection moulding moulding first parts of plastics shown in Figure 2.

Fig. 4 is the schematic diagram of device for injection moulding moulding second parts of plastics shown in Figure 2.

Fig. 5 divides the mould schematic diagram after device for injection moulding moulding second parts of plastics shown in Figure 2.

Fig. 6 ejects the schematic diagram that module ejects the dual-color plastic product after device for injection moulding moulding shown in Figure 2 divides mould.

The specific embodiment

See also Fig. 1, be depicted as the device for injection moulding 100 of the preferable enforcement of the utility model.Device for injection moulding 100 comprises behind 110, one of the front moulds (first mould) 120, rotating modules of mould (second mould) 130, one first nozzle 150, second nozzle 170 and a liftout module 180.Front mould 110 can match with back mould 120, thus needed die cavity when forming the plastic product moulding.

Front mould 110 is the square shape, and it is formed with first host cavity 111 and second host cavity 112 with back mould 120 facing surfaces.In addition, front mould 110 also can offer first cast gate 113 that runs through front mould 110, the second half cast gate 114 and the 3 half cast gates 115.First cast gate 113 is between first host cavity 111 and second host cavity 112, and first cast gate 113 is communicated with first host cavity 111 and second host cavity 112.The second half cast gates 114 are communicated with second host cavity 112 with first host cavity 111 respectively with the 3 half cast gate 115.In the present embodiment, first cast gate 113 is communicated with second host cavity 112 with first host cavity 111 by the first flow 117 and second runner 118 respectively.

Back mould 120 is the square shape, and itself and front mould 110 facing surfaces are formed with first projection, 121 and second projection 123.First projection, 121 and second projection 123 all can match with second host cavity 112 with first host cavity 111.And second projection 123 offers one less than first projection, 121, the second protruding 123 middle parts and is communicated with extraneous through hole 1231.In addition, back mould 120 also offers half cast gate 125 of contiguous second projection 123.

Rotating module 130 is a rotating disk, and its central authorities offer a through hole 131.

Liftout module 180 comprises a thimble 181 and connects the jacking block 183 of thimble 181.

See also Fig. 2, during assembling, front mould 110 is fixed in rotating module 130, and first cast gate 113 of front mould 110 aligns with the through hole 131 of rotating module 130.Back mould 120 is fixed in the ejection formation board, and front mould 110 surface that is formed with first host cavity 111 and second host cavity 112 is formed with the surface of first projection, 121 and second projection 123 towards back mould 120.First nozzle 150 pass rotating module 130 through hole 131 and be connected to first cast gate 113.Second nozzle 170 is positioned at the side of front mould 110 and over against the second half cast gates 114.Thimble 181 is arranged at the through hole 1231 of second projection 123 and the outside that jacking block 183 is positioned at back mould 120.

See also Fig. 3, during operation, front mould 110 and back mould 120 matched moulds and be in relative primary importance, at this moment, second projection 123 is positioned at first host cavity 111, the, 3 half cast gates 115 and first flow 117 is closed; First projection 121 is positioned at second host cavity 112 and forms first die cavities jointly with second host cavity 112, and first cast gate 113 is communicated with second host cavity 112.

First nozzle 150 by rotating module 130 through hole 131 and stretch into first cast gate, 113, the first molten plastics by first nozzle 150 and charge into first die cavities of first projection, 121 and second host cavity, 112 common formation successively through first cast gate 113 and second runner 118.Treat that first molten plastic in first die cavity forms the plastics semi-finished product 21 with solid shape after cooling a period of time.

Die sinking then, at this moment, front mould 110 drives plastics semi-finished product 21 and rotates around first nozzle 150 under the drive of rotating module 130.

Behind front mould 110 Rotate 180 degree, front mould 110 is in the relative second place with back mould 120, at this moment, front mould 110 and back mould 120 matched moulds, second host cavity 112, plastics semi-finished product 21 and second projection 123 match and form second die cavity, and the 3 half cast gate 115 of front mould 110 matches with half cast gate 125 of back mould 120 and forms second cast gate.At this moment, semi-finished product one end is fixed in front mould 110 and remainder is positioned at second die cavity.And this moments the second half, cast gate 114 sealed with second runner 118.

Then, see also Fig. 4, second nozzle 170 stretches in second cast gate of the 3 half cast gate 115 and half cast gate, 125 formation of mould 120 afterwards, and in second die cavity, be injected into second molten plastic by second cast gate, like this, second plastics are full of its complementary space of second die cavity, and combine two and form the dual-color plastic product with plastics semi-finished product 21, and the dual-color plastic product comprises first parts of plastics (being semi-finished product 21) and second parts of plastics 23.And first nozzle 150 also charges into first plastics by the 3rd runner 117 to first projection, 121 and first host cavity, 111 common first die cavities that form simultaneously, forms the plastics semi-finished product 21a of another dual-color plastic product again.

After treating dual-color plastic product cooling and shaping, die sinking, at this moment, as shown in Figure 5, the dual-color plastic product rests on the mould 120 of back.Then, as shown in Figure 6, thimble 181 directly ejects the dual-color plastic product and gets final product.Then, repeat said process, produce other dual-color plastic product.

Because thimble 181 is to be arranged at back mould 120, die sinking back center 181 ejects in the process of dual-color plastic product, rotating module 130 can drive front mould 110 simultaneously and rotate, after thimble 181 ejects the dual-color plastic product, front mould 110 goes to again and the relative primary importance of back mould 120, at this moment, matched moulds can continue to produce next dual-color plastic product.

Because above-mentioned thimble 181 ejects the dual-color plastic product and front mould 110 rotating process can be carried out simultaneously, can save a large amount of stand-by period, therefore, device for injection moulding 100 has advantage of high production efficiency.

Be appreciated that, as long as satisfy in the forming process, semi-finished product can rotate with front mould 110, and the product after the complete moulding can rest on back mould 120 after die sinking, and back mould 120 be provided with the product after the complete moulding can be ejected eject module 180, also above-mentioned first host cavity 111 and second host cavity 112 also can be able to be arranged at back mould 120 and first projection, 121 and second projection 123 are arranged at front mould 110.And, first projection, 121 and second projection 123 even also can omit.

In addition, second cast gate also can be opened in front mould 110 separately or be opened in back mould 120 separately.

Claims

1. device for injection moulding, it comprises first mould, second mould, eject module, first cast gate and second cast gate, when second mould and first mould are in primary importance, second mould matches with first mould and forms first die cavity, and first cast gate is connected with first die cavity and can injects first plastics to form first parts of plastics in first die cavity; When second mould and first mould are in the second place, second mould matches with first mould and forms second die cavity, second cast gate is connected with second die cavity and can injects second plastics to form second parts of plastics in second die cavity, it is characterized in that: described device for injection moulding also comprises rotating module, first mould is fixed in rotating module and can rotates between the primary importance and the second place with rotating module, is attached to first mould after the first parts of plastics moulding; After the second parts of plastics moulding, first parts of plastics and second parts of plastics are attached to second mould, and the described module that ejects is arranged at second mould.

2. device for injection moulding as claimed in claim 1, it is characterized in that: described first mould is formed with first host cavity and second host cavity, described second mould is formed with first projection and second projection, this first host cavity and second host cavity are used for matching with first projection and form described first die cavity, and this first host cavity and second host cavity are used for matching with this second projection and form described second die cavity.

3. device for injection moulding as claimed in claim 2, it is characterized in that: described device for injection moulding also comprises first nozzle that matches with this first cast gate, described first cast gate is opened in first mould, first cast gate is between first host cavity and second host cavity, and first cast gate is used for being communicated with first host cavity and second host cavity.

4. device for injection moulding as claimed in claim 2 is characterized in that: described first mould offers the first flow and second runner, and first cast gate is communicated with second host cavity with first host cavity by the first flow and second runner respectively.

5. device for injection moulding as claimed in claim 2 is characterized in that: described rotating module offers through hole, and the through hole of this rotating module is used for matching with this first cast gate.

6. device for injection moulding as claimed in claim 5 is characterized in that: first nozzle passes this through hole and is used for matching with this first cast gate.

7. device for injection moulding as claimed in claim 1, it is characterized in that: described device for injection moulding also comprises second nozzle that matches with this second cast gate, described first mould offers the second half cast gates and the 3 half cast gate, the second half cast gates are communicated with second host cavity with first host cavity respectively with the 3 half cast gate, described second mould offers half cast gate of contiguous second projection, and half cast gate of described second mould is used for matching with the second half cast gates and the 3 half cast gate and forms second cast gate.

8. device for injection moulding as claimed in claim 1 is characterized in that: the angle between the primary importance and the second place is 180 degree.

9. device for injection moulding as claimed in claim 1 is characterized in that: this ejects module and comprises thimble, and this second mould offers through hole, and this thimble is contained in this through hole.

10. device for injection moulding as claimed in claim 9 is characterized in that: this ejects module and also comprises the jacking block that connects this thimble.