CN106671350B - Secondary injection mold of two-material cover body - Google Patents

Abstract

The invention discloses a secondary injection mold of a double-material cover body, which comprises: the front mould comprises a front mould frame, the rear mould comprises a rear mould frame corresponding to the front mould frame, a plurality of front mould cores are arranged in the front mould frame, front mould inserts are respectively arranged on the front mould cores, a rubber ring sleeve is arranged on the front mould inserts, a base plate is arranged below the rear mould frame, a plurality of first rear mould cores are arranged on the base plate, first rear mould inserts pointing to the front mould inserts are respectively arranged on the first rear mould cores, a plurality of second rear mould cores are arranged on the rear mould frame, and second rear mould inserts corresponding to the front mould inserts are arranged on the second rear mould cores. Through the mode, when the mold is opened, the rubber ring is sleeved on the front mold insert, the positioning column is used for positioning, then the mold is closed, and injection molding is carried out, so that the complete double-material cover body is obtained, and the structure is firm.

Description

A secondary injection mold for a two-material cover

technical field

The invention relates to the field of molds, in particular to a secondary injection mold for a two-material cover body.

Background technique

The structure of the special cover is complex, and the inner ring and the outer ring need materials of different hardness and color to meet the needs of use.

After the inner ring and outer ring of the cover body are separately injection molded, the inner ring and the outer ring need to be connected and installed, especially when the inner ring material is soft, the stability of the connection is poor, and a special connection structure is also designed. The structure is more complicated, the cost of the mold is increased, and a lot of labor is consumed.

SUMMARY OF THE INVENTION

The main technical problem to be solved by the present invention is to provide a secondary injection mold for a two-material cover body, which utilizes the injection molding of the outer ring to connect and fix the inner ring, thereby increasing the structural strength and reducing labor costs.

In order to solve the above-mentioned technical problems, a technical solution adopted in the present invention is to provide a double-material over-injection mold for the cover body, which is used for the over-injection of the rubber ring to be wrapped and fixed on the outside, including: a front mold and a rear mold. The front mold includes a front mold frame, the rear mold includes a rear mold frame corresponding to the front mold frame, a number of front mold cores are arranged in the front mold frame, and front mold inserts are respectively provided on the front mold cores, The rubber ring is sleeved on the front mold insert, a backing plate is arranged under the rear mold frame, and a number of first rear mold cores are arranged on the backing plate, and the first rear mold cores are respectively provided with pointing to the front mold inserts The first rear mold insert of the part, the rear mold frame is provided with several second rear mold cores, and the second rear mold cores are provided with second rear mold inserts corresponding to the front mold inserts. The second rear mold insert is sleeved on the first rear mold insert.

In a preferred embodiment of the present invention, the front mold insert is provided with a ring corresponding to the inner hole of the rubber ring, and the end of the first rear mold insert is provided with a third rear ring corresponding to the convex ring. Mold inserts.

In a preferred embodiment of the present invention, the front mold insert is provided with a positioning column corresponding to the rubber ring.

In a preferred embodiment of the present invention, two die feet are symmetrically arranged below the backing plate, and a bottom plate is arranged below the die feet.

In a preferred embodiment of the present invention, a thimble plate is arranged between the two die feet, a thimble cover plate is arranged below the thimble plate, and a thimble plate corresponding to the second rear die insert is arranged on the thimble plate. The ejector pin is provided with a middle torso extending to the rear mold frame on the ejector pin board.

In a preferred embodiment of the present invention, a return needle extending to the rear mold frame is provided on the ejector plate.

In a preferred embodiment of the present invention, a hot runner plate is arranged below the front mold frame, a hot runner plate cover is arranged below the hot runner plate, and a heat insulation plate is arranged below the hot runner plate cover.

In a preferred embodiment of the present invention, the front mold frame is provided with a plurality of slider locking blocks directed toward the rear mold frame, the backing plate is provided with a slider corresponding to the sliding block locking block, and the pads A chute corresponding to the slider is arranged on the board, and a pressure bar for limiting the slider is arranged on the chute.

In a preferred embodiment of the present invention, four corners of the front mold frame are respectively provided with guide posts pointing to the rear mold frame, and guide sleeves corresponding to the guide posts are provided on the rear mold frame.

In a preferred embodiment of the present invention, a lock module is provided on the outside of the front mold frame and the rear mold frame, and side locks are provided on the contact surfaces of the front mold frame and the rear mold frame.

The beneficial effects of the present invention are as follows: a double injection mold for a two-material cover body pointed out by the present invention, when the mold is opened, the rubber ring is sleeved on the front mold insert, and the positioning column is used for positioning, and then the mold is closed to carry out Re-injection to obtain a complete bi-material cover body, using the outer ring material of the bi-material cover to connect and fix the inner rubber ring, the structure is relatively firm, the durability is good, and the assembly process is avoided, reducing labor costs. Conducive to simplifying the mold structure.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

1 is a schematic structural diagram of a preferred embodiment of a front mold of a secondary injection mold for a dual-material cover of the present invention;

Fig. 2 is a partial enlarged view of part A in Fig. 1;

3 is a schematic structural diagram of a preferred embodiment of the back mold of a two-material cover secondary injection mold of the present invention;

Fig. 4 is the structural representation of a preferred embodiment of removing the rear mold frame in Fig. 3;

Fig. 5 is the product schematic diagram of the secondary injection mold of a kind of bi-material cover of the present invention;

FIG. 6 is a partial enlarged view of part B in FIG. 3 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 6, the embodiments of the present invention include:

An over-injection mold for a two-material cover body, which is used for over-injection in which an apron is wrapped and fixed on the outside, including: a front mold and a rear mold, the front mold includes a front mold frame 3, and the rear mold includes a front mold and a front mold. The rear mold frame 19 corresponding to the frame 3, the front mold frame 3 is provided with several front mold cores 6, the front mold cores 6 are respectively provided with front mold inserts 7, and the rubber ring 2 is sleeved on the front mold inserts. On the part 7, a backing plate 14 is arranged below the rear mold frame 19, a number of first rear mold cores 24 are arranged on the backing plate 14, and the first rear mold cores 24 are respectively provided with front-facing mold inserts The first rear mold insert 27 of the The insert 16, the second rear mold insert 16 is sleeved on the first rear mold insert 27. When opening the mold, set the rubber ring 2 on the front mold insert 7, then close the mold and re-injection to obtain a complete bi-material cover body. The connection is fixed, as shown in Figure 5, the structure is relatively firm, the durability is good, and the assembly process is avoided, the labor cost is reduced, and the mold structure is simplified.

The front mold insert 7 is provided with a convex ring 29 corresponding to the inner hole of the rubber ring 2, and the end of the first rear mold insert 27 is provided with a third rear mold insert 21 corresponding to the convex ring 29. Close cooperation, reduce flash and improve product quality.

The front mold insert 7 is provided with a positioning column 18 corresponding to the rubber ring 2 . When the rubber ring 2 is sleeved on the front mold insert 7, the positioning column 18 is used for auxiliary positioning, which avoids the movement of the rubber ring 2 and improves the qualification rate and accuracy of the product.

Two mold feet 13 are symmetrically arranged below the backing plate 14 , and a bottom plate 12 is disposed below the mold feet 13 to facilitate the installation of the rear mold.

A thimble plate 10 is arranged between the two die feet 13 , a thimble cover plate 11 is arranged below the thimble plate 10 , and a thimble corresponding to the second rear die insert 16 is arranged on the thimble plate 10 . The ejector plate 10 is provided with a middle torso 26 extending to the rear mold frame 19, which is beneficial to improve the running stability of the ejector. The ejector plate 10 is provided with a return needle 28 extending to the rear mold frame 19 , and the return needle 28 retracts when the mold is closed, which is beneficial to the reset of the ejector plate 10 .

A hot runner plate 8 is arranged below the front mold frame 3 , a hot runner plate cover 1 is arranged below the hot runner plate 8 , and an insulating plate 9 is arranged below the hot runner plate cover 1 to reduce the number of hot runner plates. Heat loss from cover plate 1.

The front mold frame 3 is provided with a number of slider locking blocks 4 pointing toward the rear mold frame 19 , the backing plate 14 is provided with a sliding block 23 corresponding to the sliding block locking block 4 , and the backing plate 14 is provided with a sliding block 23 corresponding to the sliding block locking block 4 . There is a chute corresponding to the sliding block 23 , and a pressure bar 22 for limiting the sliding block 23 is arranged on the sliding groove, so as to facilitate the installation and positioning of the limiting sliding block 23 .

The four corners of the front mold frame 3 are respectively provided with guide posts 5 pointing to the rear mold frame 19 , and the rear mold frame 19 is provided with a guide sleeve 25 corresponding to the guide post 5 . Cooperate to improve the stability of mold opening and closing.

A lock module 15 is provided on the outside of the front mold frame 3 and the rear mold frame 19 to facilitate the storage and transportation of the mold. The front mold frame 3 and the rear mold frame Structural stability to avoid damage.

To sum up, the present invention provides a secondary injection mold for a two-material cover, which improves the production efficiency of the two-material cover. The rubber ring 2 can be selected from soft plastics, and the exterior of the two-material cover can be selected from hard plastics. , well meet the requirements of use, firm structure, good durability.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description of the present invention, or directly or indirectly applied in other related technical fields, are all applicable. Similarly, it is included in the scope of patent protection of the present invention.

Claims (8)

1. The utility model provides a two-shot injection mold of two material lids for the outside fixed two-shot of parcel of rubber ring includes: a front mold and a rear mold, the front mold including a front mold frame, the rear mold including a rear mold frame corresponding to the front mold frame, it is characterized in that a plurality of front die inserts are arranged in the front die frame, front die inserts are respectively arranged on the front die inserts, the rubber ring is sleeved on the front die inserts, a backing plate is arranged below the rear die frame, a plurality of first rear die inserts are arranged on the backing plate, the first rear die inserts pointing to the front die inserts are respectively arranged on the first rear die inserts, a plurality of second rear die inserts are arranged on the rear die frame, second rear die inserts corresponding to the front die inserts are arranged on the second rear die inserts, the second rear mould insert is sleeved on the first rear mould insert, a circle of convex ring corresponding to the inner hole of the rubber ring is arranged on the front mould insert, and a third rear mold insert corresponding to the convex ring is arranged at the end part of the first rear mold insert, and a positioning column corresponding to the rubber ring is arranged on the front mold insert.

2. The secondary injection mold of a bi-material cover according to claim 1, wherein two mold legs are symmetrically disposed under the base plate, and a bottom plate is disposed under the mold legs.

3. The double-material cover body injection mold according to claim 2, wherein an ejector plate is arranged between the two mold legs, an ejector cover plate is arranged below the ejector plate, an ejector corresponding to the second rear mold insert is arranged on the ejector plate, and a middle support extending to the rear mold frame is arranged on the ejector plate.

4. The bi-material cover overmolding mold of claim 3, wherein the ejector plate is provided with a backstitch extending to the back mold frame.

5. The double-injection mold with a double-material cover body as claimed in claim 1, wherein a hot runner plate is arranged below the front mold frame, a hot runner plate cover plate is arranged below the hot runner plate, and a heat insulation plate is arranged below the hot runner plate cover plate.

6. The secondary injection mold with a dual-material cover according to claim 1, wherein the front mold frame is provided with a plurality of slide block locking blocks pointing to the rear mold frame, the backing plate is provided with slide blocks corresponding to the slide block locking blocks, the backing plate is provided with slide grooves corresponding to the slide blocks, and the slide grooves are provided with pressing strips for limiting the slide blocks.

7. The double-shot molding mold for bi-material lid as claimed in claim 1, wherein the front mold frame is provided at four corners thereof with guide posts pointing to the rear mold frame, and the rear mold frame is provided with guide sleeves corresponding to the guide posts.

8. The double-injection mold for the double-material cover body of claim 1, wherein the outer sides of the front mold frame and the rear mold frame are provided with locking modules, and the contact surfaces of the front mold frame and the rear mold frame are provided with side locks.

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