CN217834559U

CN217834559U - Multi-cavity injection mold

Info

Publication number: CN217834559U
Application number: CN202222000118.7U
Authority: CN
Inventors: 毕鸿光; 王金亮; 张庚鲁; 郝任心; 陶乐; 赵海洲; 王义欣
Original assignee: Weihai Zhongxiang Mold Co ltd
Current assignee: Weihai Zhongxiang Mold Co ltd
Priority date: 2022-07-30
Filing date: 2022-07-30
Publication date: 2022-11-18
Anticipated expiration: 2032-07-30

Abstract

The utility model discloses a multicavity type injection mold, including the die holder, the top of die holder is provided with the upper die base, and the top fixed mounting of die holder has the bed die, is provided with the linkage subassembly between bed die, upper die and two fly leafs. This multicavity type injection mold, design through drawing of patterns subassembly and linkage subassembly, during the use, through moulding plastics mouthful plastics after the inside injection melting of mould that makes progress, working of plastics after the cooling shaping is stained with when attaching in last mould and last mould, the rotatory piece that the user rotatable phase adheres on the mould, rotatory piece rotates and drives the ratch rotation, the ratch rotates and drives the bar pinion rack and upwards or move down, the bar pinion rack removes and drives two sets of connecting rod and kicking block synchronous motion, until under the jacking force effect at two group kicking blocks, thereby realize the drawing of patterns work of working of plastics after the shaping, compare with the conventional mode, the demoulding effect of the back finished piece of moulding plastics has been guaranteed, the artifical efficiency of getting the material has been improved.

Description

Multi-cavity injection mold

Technical Field

The utility model relates to an injection mold technical field specifically is a multicavity type injection mold.

Background

An injection mold is a tool for producing plastic products; the tool is also used for endowing the plastic product with complete structure and accurate dimension, and the injection molding is a processing method used for mass production of parts with complex shapes.

After the existing multi-cavity injection mold is processed, the plastic is easy to adhere to the inner surface of the mold after being cooled, and when the upper mold and the lower mold are difficult to separate, the demolding effect of the common ejector pin demolding mode is unsatisfactory, the manual material taking is inconvenient, and the multi-cavity injection mold is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multicavity type injection mold to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a multi-cavity injection mold comprises a lower mold base, wherein an upper mold base is arranged above the lower mold base, a lower mold is fixedly mounted at the top end of the lower mold base, an upper mold is fixedly mounted at the bottom end of the upper mold base, and demolding assemblies are arranged inside the lower mold and the upper mold;

the demolding assembly comprises two movable plates, two groups of connecting rods and two groups of ejector blocks, the two movable plates are respectively sleeved in the lower mold and the upper mold in a sliding mode, the two groups of connecting rods are respectively and fixedly connected to the outer sides of the two movable plates, and the two groups of ejector blocks are respectively and fixedly connected to one ends of the two groups of connecting rods;

and a linkage assembly is arranged among the lower die, the upper die and the two movable plates.

Optionally, the top end of the lower die holder is symmetrically and fixedly connected with two groups of guide rods, the upper die holder is slidably sleeved outside the two groups of guide rods, and the top ends of the two groups of guide rods are fixedly connected with a top plate.

Optionally, a hydraulic cylinder is fixedly mounted at the top end of the top plate, an output end of the hydraulic cylinder is in transmission connection with a hydraulic rod, and the bottom end of the hydraulic rod is fixedly connected with the top end of the upper die base.

Optionally, one side in opposite directions of the lower mold and the upper mold is respectively provided with a plurality of lower injection molding grooves and upper injection molding grooves at equal intervals, and a plurality of circulation cavities are formed between the upper injection molding grooves.

Optionally, an injection molding opening is formed in the bottom of one side of the upper mold, a plug is slidably sleeved at an input end of the injection molding opening, and an output end of the injection molding opening is communicated with one of the circulation cavities.

Optionally, the linkage assembly includes two bar-shaped toothed plates, two rack bars and two rotatory pieces, two bar-shaped toothed plates fixed connection respectively is in the outside of two fly leafs, two the rack bar meshes respectively in one side of two bar-shaped toothed plates, two rotatory pieces fixed connection respectively is in the one end of two rack bars.

Compared with the prior art, the beneficial effects of the utility model are that:

this multicavity type injection mold, design through drawing of patterns subassembly and linkage assembly, during the use, it is up to laminating back between supreme mould and the bed die to move hydraulic pressure, go into the inside plastics after the melting of injecting into of mould through the mouth of moulding plastics, wait to move the pneumatic cylinder again behind the plastics cooling forming, after bed die and bed die separately, if the working of plastics after the cooling forming is stained with when attaching in last mould and last mould, the rotatable rotatory piece that adheres to on the mould of user, rotatory piece rotates and drives the ratch rotation, the ratch rotates and drives the bar pinion rack upwards or the downstream, the bar pinion rack removes and drives two sets of connecting rods and kicking block synchronous motion, until under the jacking force effect at two group kicking blocks, thereby realize the drawing of patterns work of the working of plastics after the shaping, compare with the traditional approach, the drawing of patterns effect of the finished piece after having guaranteed to mould plastics, the efficiency of artifical material of getting has been improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a multi-cavity injection mold according to the present invention;

FIG. 2 is a side sectional view of a multi-cavity injection mold of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a in fig. 2 of a multi-cavity injection mold according to the present invention;

fig. 4 is an enlarged schematic structural view of a portion B in fig. 2 of a multi-cavity injection mold according to the present invention.

In the figure: 1. a lower die holder; 2. an upper die holder; 3. a top plate; 4. a lower die; 5. an upper die; 6. a guide rod; 7. a hydraulic cylinder; 8. an injection molding port; 9. a plug; 10. a hydraulic lever; 11. a flow-through chamber; 12. a movable plate; 13. a connecting rod; 14. a top block; 15. a strip toothed plate; 16. a rack bar; 17. the block is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 to 4, the utility model provides a multicavity type injection mold, including die holder 1, the top of die holder 1 is provided with upper die base 2, the top fixed mounting of die holder 1 has lower mould 4, the bottom fixed mounting of upper die base 2 has last mould 5, the inside of lower mould 4 and last mould 5 all is provided with drawing of patterns subassembly, drawing of patterns subassembly includes two fly leaves 12, two sets of connecting rod 13 and two sets of kicking blocks 14, wherein every group connecting rod 13 and kicking blocks 14's quantity is all not less than seven, two fly leaves 12 slip cap respectively establish the inside at lower mould 4 and last mould 5, establish through the slip cap between two fly leaves 12 and lower mould 4 and last mould 5, longitudinal movement in lower mould 4 and last mould 5 respectively is in order to restrict two fly leaves 12, two sets of connecting rods 13 are fixed connection in the outside of two fly leaves 12 respectively, two sets of kicking blocks 14 are fixed connection respectively in the one end of two sets of connecting rods 13.

The top end of the lower die holder 1 is symmetrically and fixedly connected with two groups of guide rods 6, the number of the guide rods 6 is two, the upper die holder 2 is sleeved outside the two groups of guide rods 6 in a sliding manner, the stability of the upper die holder 2 during longitudinal movement is ensured through the sliding sleeve between the upper die holder 2 and the two groups of guide rods 6, the top ends of the two groups of guide rods 6 are fixedly connected with a top plate 3, the top end of the top plate 3 is fixedly provided with a hydraulic cylinder 7, the output end of the hydraulic cylinder 7 is connected with a hydraulic rod 10 in a transmission manner, the bottom end of the hydraulic rod 10 is fixedly connected with the top end of the upper die holder 2, one opposite sides of the lower die 4 and the upper die 5 are respectively provided with a plurality of lower injection molding grooves and upper injection molding grooves at equal intervals, the position between groove and the last groove of moulding plastics of making a bet is corresponding, it is the same with two sets of kicking blocks 14 with last groove quantity of moulding plastics to make a bet mould the groove and go up the groove quantity of moulding plastics, and two sets of kicking blocks 14 slip cap establish the inside of moulding plastics the groove and last groove of moulding plastics under respectively, through kicking blocks 14 the groove of moulding plastics and the motion sense in last groove of moulding plastics under, thereby realize the drawing of patterns work of the cooling shaping back working of plastics of moulding plastics, circulation chamber 11 has been seted up between a plurality of grooves of moulding plastics, mould 5's one side bottom has been seted up and has been moulded plastics mouthful 8, the input slip cap of moulding plastics mouthful 8 is equipped with end cap 9, communicate between the output of moulding plastics mouthful 8 and one of them circulation chamber 11.

Lower mould 4, go up and be provided with the linkage subassembly between mould 5 and two fly leafs 12, the linkage subassembly includes two bar pinion rack 15, two ratchets 16 and two rotatory pieces 17, two bar pinion rack 15 respectively fixed connection are in the outside of two fly leafs 12, and two bar pinion rack 15 slide sleeve respectively establish in the inside of lower mould 4 and last mould 5, two ratchets 16 mesh respectively in one side of two bar pinion rack 15, two ratchets 16 can be relative at lower mould 4 and last mould 5 internal rotation, two rotatory pieces 17 respectively fixed connection are in the one end of two ratchets 16.

The working principle is as follows: during the use, operation pneumatic cylinder 7 drives hydraulic stem 10 and stretches out downwards, and hydraulic stem 10 stretches out and drives upper die base 2 and mould 5 synchronous downstream, laminates between mould 5 and the bed die 4.

Then, the melted plastic is injected into the upper mold 5 through the injection port 8, the injection is stopped after the space between the upper mold 5 and the lower mold 4 is filled, the hydraulic cylinder 7 is operated again after the plastic is cooled and formed, after the lower mold 4 and the lower mold 5 are separated, if the cooled and formed plastic piece is attached to the upper mold 4 and the upper mold 5, a user can rotate the rotating block 17 relatively attached to the mold, the rotating block 17 rotates to drive the toothed bar 16 to rotate, the toothed bar 16 rotates to drive the bar-shaped toothed plate 15 to move upwards or downwards, the bar-shaped toothed plate 15 moves to drive the two groups of connecting rods 13 and the ejector blocks 14 to move synchronously until the plastic piece is lifted by the two groups of ejector blocks 14, and therefore the demolding work of the formed plastic piece is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multi-cavity injection mold comprises a lower mold base (1), and is characterized in that an upper mold base (2) is arranged above the lower mold base (1), a lower mold (4) is fixedly installed at the top end of the lower mold base (1), an upper mold (5) is fixedly installed at the bottom end of the upper mold base (2), and demolding assemblies are arranged inside the lower mold (4) and the upper mold (5);

the demolding assembly comprises two movable plates (12), two groups of connecting rods (13) and two groups of ejector blocks (14), the two movable plates (12) are respectively sleeved in the lower mold (4) and the upper mold (5) in a sliding mode, the two groups of connecting rods (13) are respectively fixedly connected to the outer sides of the two movable plates (12), and the two groups of ejector blocks (14) are respectively fixedly connected to one ends of the two groups of connecting rods (13);

and linkage assemblies are arranged among the lower die (4), the upper die (5) and the two movable plates (12).

2. A multi-cavity injection mold according to claim 1, wherein two sets of guide rods (6) are symmetrically and fixedly connected to the top end of the lower mold base (1), the upper mold base (2) is slidably sleeved outside the two sets of guide rods (6), and the top ends of the two sets of guide rods (6) are fixedly connected with the top plate (3).

3. A multi-cavity injection mold according to claim 2, wherein a hydraulic cylinder (7) is fixedly mounted at the top end of the top plate (3), an output end of the hydraulic cylinder (7) is connected with a hydraulic rod (10) in a transmission manner, and the bottom end of the hydraulic rod (10) is fixedly connected with the top end of the upper mold base (2).

4. A multi-cavity injection mold according to claim 1, wherein the opposing sides of the lower mold (4) and the upper mold (5) are provided with a plurality of lower injection molding grooves and upper injection molding grooves at equal intervals, respectively, and a flow cavity (11) is provided between the plurality of upper injection molding grooves.

5. A multi-cavity injection mold according to claim 4, wherein an injection port (8) is formed in the bottom of one side of the upper mold (5), a plug (9) is slidably sleeved on an input end of the injection port (8), and an output end of the injection port (8) is communicated with one of the circulation cavities (11).

6. A multi-cavity injection mold according to claim 1, wherein the linkage assembly comprises two bar-shaped toothed plates (15), two toothed bars (16) and two rotating blocks (17), the two bar-shaped toothed plates (15) are respectively and fixedly connected to the outer sides of the two movable plates (12), the two toothed bars (16) are respectively engaged with one side of the two bar-shaped toothed plates (15), and the two rotating blocks (17) are respectively and fixedly connected to one ends of the two toothed bars (16).