CN112497670A - Mold capable of secondary ejection - Google Patents

Abstract

The invention provides a mold capable of secondary ejection, which comprises an upper mold and a lower mold, wherein the upper mold comprises an upper mold plate and a mold core arranged in the upper mold plate; the lower die comprises a lower die plate and a cavity arranged in the lower die plate; the die also comprises two secondary ejection mechanisms which are arranged on the two side arms of the upper die and are matched with each other. The upper die further comprises two backing plates arranged on the upper die plate, an upper die top plate arranged on the backing plates, and a surface needle plate, a first bottom needle plate and a second bottom needle plate which are arranged between the upper die top plate and the die plate. The secondary ejection mechanism comprises a fixed seat and a fastening block, wherein a supporting block, a first connecting rod and a second connecting rod are arranged on the fastening block, and the supporting block is arranged between the first connecting rod and the second connecting rod. The invention has simple structure, and can realize the secondary ejection of the product by the matching of the push rod, the straight ejector and the secondary ejection mechanism, thereby ensuring the smooth demoulding of the product.

Description

Mold capable of secondary ejection

Technical Field

The invention relates to the technical field of molds, in particular to a mold capable of being ejected twice.

Background

In the process of product injection molding, products with multiple buckling positions and reverse buckles are frequently encountered, the common method is that a pitched roof or a swing rod or the characteristics of materials are combined with the product structure to allow a certain elastic deformation space to realize forced demolding, but the schemes are not suitable for some products, for example, one product is not very large, but multiple buckling positions are arranged, the pitched roof is not arranged at an enough position and is not suitable for forced demolding, namely, the demolding can not be realized by adopting the prior art, and the demolding in the other prior art also has the following defects:

1. the existing inclined top structure is easy to wear because of a sliding seat of the inclined top, and due to structural reasons, a very good vertical support cannot be guaranteed during injection molding, so that the inclined top is very easy to lower or higher during production, more glue at lower part can influence product assembly, and the product can be scratched when tripping at higher part.

2. The existing pitched roof structure cannot be too small, otherwise, the elastic deformation is easily generated, so that the product quality is unqualified and the fracture condition occurs, and if the pitched roof structure is designed to be a larger point, the water conveying design of the inner mold core is influenced.

3. The product is difficult to drop for the demoulding of the existing pitched roof structure. Manual or mechanical hand grasping is required, namely automatic demolding cannot be realized.

4. The existing pitched roof structure needs to be provided with a slant hole and irregular parts, and the processing cost is high.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the mold capable of realizing secondary ejection, and the mold can realize secondary ejection of a product, so that smooth demolding of the product with the back-off is ensured.

The technical scheme of the invention is as follows: a mould capable of secondary ejection comprises an upper mould and a lower mould, wherein the upper mould comprises an upper mould plate and a core arranged in the upper mould plate;

the lower die comprises a lower die plate and a cavity arranged in the lower die plate;

the die also comprises two secondary ejection mechanisms which are arranged on the two side arms of the upper die and are matched with each other.

Furthermore, the upper die further comprises two base plates arranged on the upper die plate, an upper die top plate is arranged on each base plate, and the two base plates are arranged on the upper die plate through a plurality of corresponding screws.

Furthermore, the upper die further comprises a surface needle plate, a first bottom needle plate and a second bottom needle plate which are arranged between the upper die top plate and the upper die plate.

Furthermore, a plurality of return pins are connected between the surface needle plate and the upper template.

Furthermore, a plurality of support columns are connected between the surface needle plate, the first bottom needle plate and the second bottom needle plate, and support column sleeves are further sleeved on the support columns.

Furthermore, the lower end of the surface needle plate is also provided with a plurality of straight tops, and the straight tops downwards extend into the upper template and are inserted at the periphery of the mold core.

Further, the lower end of the second bottom needle plate is also provided with a push rod, and the push rod extends downwards to sequentially penetrate through the first bottom needle plate, the surface needle plate and the upper mold plate and is inserted into the mold core.

Furthermore, the lower die also comprises a lower die bottom plate arranged at the lower end of the lower die plate.

Furthermore, the secondary ejection mechanism comprises a fixed seat, and a surface needle plate, a first bottom needle plate and a second bottom needle plate which are arranged in the fixed seat and used for fixing the upper die, and a button machine assembly.

Furthermore, the fixing seat is of an L-shaped structure, a groove is formed in the fixing seat along the length direction, and the button machine assembly is arranged in the groove and can move in the groove.

Furthermore, the fixing seat lower extreme be provided with a plurality of dead levers that are used for being connected with the cope match-plate pattern.

Furthermore, the button machine component comprises a buckling block, a supporting block, a first connecting rod and a second connecting rod are arranged on the buckling block, and the supporting block is arranged between the first connecting rod and the second connecting rod.

Furthermore, a clamping groove is formed in the upper end of the fastening block, the clamping groove is connected with an elastic block arranged in the second bottom needle plate, and a plurality of springs are arranged on the elastic block.

Furthermore, the clamping position of the elastic block and the clamping groove is of a wedge-shaped structure.

The invention has the beneficial effects that:

1. the invention has simple structure, and can realize the secondary ejection of the product by the matching of the push rod, the straight ejector and the secondary ejection mechanism, thereby ensuring the smooth demoulding of the product.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an upper template according to the present invention;

FIG. 3 is a schematic structural view of the lower template of the present invention;

FIG. 4 is a schematic view of a portion of the upper mold of the present invention;

FIG. 5 is a schematic view of the attachment of the mandrel to the straight top of the present invention;

FIG. 6 is a schematic structural view of the secondary ejection mechanism of the present invention;

FIG. 7 is a schematic structural view of a fastening block of the present invention;

in the drawing, 1-an upper die top plate, 2-an upper pin plate, 3-a first bottom pin plate, 4-a second bottom pin plate, 5-an upper die plate, 6-a backing plate, 7-a lower die plate, 8-a lower die bottom plate and 9-a secondary ejection mechanism;

21-clip, 22-support column, 23-straight top and 24-push rod;

51-core, 52-runner;

71-a cavity;

91-a fixed seat, 92-a groove, 93-a fixed rod, 94-a buckling block, 95-a supporting block, 96-a first connecting rod and 97-a second connecting rod; 98-clamping groove, 99-elastic block and 100-spring;

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1, the present embodiment provides a mold capable of secondary ejection, which includes an upper mold and a lower mold that are matched with each other, and the mold further includes secondary ejection mechanisms that are arranged on two side arms of the upper mold and are matched with each other.

Further, as shown in fig. 2, the upper mold in this embodiment includes an upper mold plate 5 and two cores 51 disposed in the upper mold plate 5, in this embodiment, the number of the cores 51 is two; and the two cores 51 are communicated with each other through a runner 52.

Further, as shown in fig. 3, the lower mold according to this embodiment includes a lower mold plate 7 and cavities 71 disposed in the lower mold plate 7, and accordingly, the number of the cavities 71 is also 2, and the two cavities 71 are also communicated with each other through corresponding runners 52.

Further, as shown in fig. 1, preferably, the upper mold further includes two backing plates 6 disposed on the upper mold plate 5, the two backing plates 6 are provided with the upper mold top plate 1, and the two backing plates 6 are mounted on the upper mold plate 5 through a plurality of corresponding screws.

Further, as shown in fig. 1, the upper mold further includes a needle board 2, a first bottom needle board 3, and a second bottom needle 4 disposed between the upper mold plate 1 and the upper mold plate 5, in this embodiment, the needle board 2 is located above the upper mold plate 5, and the first bottom needle board 3 and the second bottom needle 4 are sequentially disposed on the needle board 2. In the present embodiment, as shown in fig. 4, the surface needle plate 2, the first bottom needle plate 3, and the second bottom needle 4 are disposed between the top die plate 1 and the top die plate 5 through a plurality of supporting columns 22. In this embodiment, each support column 22 is further sleeved with a corresponding support column sleeve.

Further, as shown in fig. 4, in the present embodiment, a plurality of loopers 21 are connected between the needle board 2 and the upper die plate 5.

Further, as shown in fig. 4 and 5, the lower end of the needle board 2 is preferably provided with a plurality of straight tops 23, and the straight tops 23 extend downward into the upper mold plate 5 and are inserted into the slots of the core 51.

Further, as shown in fig. 4 and 5, a push rod 24 is further disposed at the lower end of the second bottom needle plate 4 according to the embodiment, and the push rod 24 extends downward to sequentially pass through the first bottom needle plate 3, the surface needle plate 2, the upper mold plate 5 and be inserted into the core 51.

Further, as shown in fig. 1, the lower mold according to this embodiment further includes a lower mold bottom plate 8 disposed at a lower end of the lower mold plate 7.

Further, as shown in fig. 6, the secondary ejection mechanism 9 includes a fixing seat 91, and a button machine assembly disposed in the fixing seat 91 and used for fixing the upper mold surface plate 2, the first bottom plate 3, and the second bottom plate 4.

Further, as a preferred embodiment, the fixing base 91 is of an L-shaped structure, a groove 92 is formed in the fixing base 91 along the length direction, the button machine assembly is disposed in the groove 92 and can move in the groove 92, in this embodiment, a plurality of fixing rods 94 for connecting with the upper template 5 are disposed at the lower end of the fixing base 91, and in this embodiment, the number of the fixing rods 94 is 4.

Further, as a preferred embodiment, the sear assembly includes a fastening block 94, a supporting block 95, a first connecting rod 96 and a second connecting rod 97 are disposed on the fastening block 94, and the supporting block 95 is disposed between the first connecting rod 96 and the second connecting rod 97. In this embodiment, the first connecting rod 96 is connected to the surface needle plate 2, the second connecting rod 97 is connected to the first bottom needle plate 3, and the supporting block 95 is clamped in the groove at the lower end of the first bottom needle plate 3.

Further, as shown in fig. 7, in the preferred embodiment, a clamping groove 98 is further formed at the upper end of the fastening block 94, the clamping groove 98 is further connected with an elastic block 99 disposed in the second bottom needle plate 4, a position where the elastic block 99 is connected with the clamping groove 98 is a wedge-shaped structure, and a plurality of springs 100 are disposed on the elastic block 99.

In the using process, because the thimble plate 2, first end thimble plate 3, second end thimble plate 4 passes through the button machine subassembly and connects, consequently, in the first drawing of patterns in-process, thimble plate 3, first end thimble plate 3, second end thimble plate 4 can move along with the button machine subassembly, after the first drawing of patterns is accomplished, bullet piece 99 and draw-in groove 98 of second end thimble plate 4 break away from, then carry out the processing of drawing of patterns for the second time, in ejection process, because thimble plate 2 and first end thimble plate 3 are connected with first connecting rod 96 and second connecting rod 97, lock joint piece 94 can move one end distance in recess 92, then continue ejecting thimble plate 2 and first end thimble plate 3. Meanwhile, the first bottom needle plate 3 and the second bottom needle plate 4 eject the product through the straight top 23 and the push rod 24 in the moving process.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.

Claims (10)

1. A mould capable of secondary ejection comprises an upper mould and a lower mould which are matched with each other, and is characterized in that the upper mould comprises an upper mould plate and a core arranged in the upper mould plate;

the lower die comprises a lower die plate and a cavity arranged in the lower die plate;

the die also comprises two secondary ejection mechanisms which are arranged on the two side arms of the upper die and are matched with each other;

and a plurality of straight jacks and push rods connected with the mold core.

2. The double-ejectable mold of claim 1, wherein: the upper die also comprises two base plates arranged on the upper die plate, an upper die top plate is arranged on the two base plates, and the two base plates are arranged on the upper die plate through a plurality of corresponding screws;

the upper die further comprises a surface needle plate, a first bottom needle plate and a second bottom needle plate which are arranged between the upper die top plate and the upper die plate.

3. The double-ejectable mold of claim 2, wherein: a plurality of return pins are connected between the surface pin plate and the upper die plate;

the needle board, first end needle board, second end needle board set up between last roof and cope match-plate pattern through a plurality of corresponding support columns, just the support column on still the cover be equipped with the support column cover.

4. A double ejectable mold according to claim 3, characterised in that: the lower end of the surface needle plate is also provided with a plurality of straight jacks, and the straight jacks extend downwards into the upper template and are inserted into the core.

5. A double ejectable mold according to claim 3, characterised in that: the lower end of the second bottom needle plate is also provided with a push rod, and the push rod extends downwards to sequentially pass through the first bottom needle plate, the surface needle plate and the upper die plate and be inserted into the core.

6. The double-ejectable mold of claim 1, wherein: the lower die also comprises a lower die bottom plate arranged at the lower end of the lower die plate.

7. The double-ejectable mold of claim 1, wherein: the secondary ejection mechanism comprises a fixed seat, a surface needle plate, a first bottom needle plate and a second bottom needle plate, wherein the surface needle plate is arranged in the fixed seat and used for fixing the upper die, and the button machine assembly is arranged on the first bottom needle plate and the second bottom needle plate, and a plurality of fixing rods used for being connected with the upper die plate are arranged at the lower end of the fixed seat.

8. The double-ejectable mold of claim 7, wherein: the fixing seat is of an L-shaped structure, a groove is formed in the fixing seat along the length direction, and the button machine assembly is arranged in the groove and can move in the groove.

9. The double-ejectable mold of claim 8, wherein: the button machine component comprises a buckling block, a supporting block, a first connecting rod and a second connecting rod are arranged on the buckling block, and the supporting block is arranged between the first connecting rod and the second connecting rod.

10. The double-ejectable mold of claim 9, wherein: the upper end of the fastening block is also provided with a clamping groove, the clamping groove is internally connected with an elastic block arranged in the second bottom needle plate, the position where the elastic block is connected with the clamping groove in a wedged structure, and the elastic block is provided with a plurality of springs.

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