CN221136793U - Lifting structure for plastic hardware mould - Google Patents

Abstract

The utility model discloses a lifting structure for plastic hardware dies, which relates to the technical field of plastic dies and comprises a bottom plate, wherein guide posts are fixedly connected to four corners of the upper side of the bottom plate, top plates are fixedly connected to the upper ends of the four groups of guide posts, a first hydraulic cylinder is fixedly arranged at the central position of the upper side of the bottom plate, the output end of the first hydraulic cylinder is fixedly connected with a lifting rod, the upper end of the lifting rod is fixedly connected with a lower die, a cylinder support is fixedly connected to the central position of the lower side of the top plate, a second hydraulic cylinder is fixedly arranged inside the cylinder support, and the output end of the second hydraulic cylinder penetrates through the bottom plate of the cylinder support and is fixedly connected with an upper die. According to the utility model, the first hydraulic cylinder and the second hydraulic cylinder are arranged, so that the two-way lifting of the upper and lower parts of the die is realized, and the first ejector block and the second ejector block can effectively eject the hardware plastic formed or cracked in the upper and lower dies through the two-way lifting, so that the die is easier to demould.

Description

Lifting structure for plastic hardware mould

Technical Field

The utility model relates to the technical field of plastic molds, in particular to a lifting structure for plastic hardware molds.

Background

The plastic injection molding method is to inject molten plastic into a plastic product mold by pressure, cool and mold to obtain various plastic parts, and the plastic injection molding machine is specially used for injection molding, wherein the most commonly used plastic at present is polyethylene, polypropylene, polystyrene and the like.

The proper mold opening and closing direction is determined according to the shape and the requirement of plastic hardware, the general mold opening and closing direction is mostly horizontal and vertical, the plastic hardware for opening and closing the mold in the vertical direction is adopted, if the plastic hardware is inverted or shaped into special shape, the general injection molding machine mold is lifted in one direction and pushed out in one direction during demolding, the plastic hardware is extremely easy to adhere to the upper mold after molding, the demolding is difficult to happen, the melted plastic is extremely easy to be cooled unevenly after injection molding, stress cracking can be generated after molding, the extrusion force of the mold is increased, and the demolding is difficult to happen.

Disclosure of utility model

In order to solve the technical problem, the lifting structure for the plastic hardware mould is provided, the problem that the proper opening and closing mould direction is determined according to the shape and the requirement of the plastic hardware at present, the common opening and closing mould direction is mostly horizontal and vertical, the plastic hardware for opening and closing the mould in the vertical direction is adopted, if the plastic hardware is inverted or shaped, the common injection molding machine mould is lifted unidirectionally during demoulding, the unidirectional ejection is realized, the plastic hardware is extremely easy to adhere to the mould after being formed, the demoulding is difficult, the melted plastic is extremely easy to be cooled unevenly after being molded, stress cracking is generated after the plastic is formed, the extrusion force of the mould is increased, and the problem of difficult demoulding is solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a lifting structure for plastic hardware mould, includes the bottom plate, equal fixedly connected with guide post in bottom plate upside four corners position department, four groups the equal fixedly connected with roof of guide post upper end, bottom plate upside central point puts the equal fixedly connected with first hydraulic cylinder of department, the output fixedly connected with lifter of first hydraulic cylinder, lifter upper end fixedly connected with lower part mould, fluted one is seted up to lower part mould upside, lifter surface sliding connection has the slide, both ends are all fixedly connected with fixed column about the slide upside, reset spring has been cup jointed on the fixed column surface, reset spring upper end and the bottom fixedly connected with of lower part mould, reset spring's lower extreme and the top fixedly connected with of slide, the fixed column upper end runs through lower part mould bottom and fixedly connected with first kicking block, roof downside central point puts the fixedly connected with cylinder support, cylinder support inside fixedly connected with second hydraulic cylinder, second hydraulic cylinder output runs through the bottom of cylinder support and fixedly connected with upper portion mould, both ends are all fixedly connected with top slide bar top fixedly connected with top slide bar under the left side support.

Preferably, the four corners of the lower die and the upper die are slidably connected with the surface of the guide post.

Preferably, the upper side of the bottom plate and the left end and the right end of the first hydraulic cylinder are fixedly connected with ejector rods.

Preferably, the rear end of the lower side of the lower die is fixedly connected with an injection molding pipe through a fixing piece, and the upper end of the injection molding pipe is communicated with the inside of the first groove.

Preferably, the rear side of the upper die is fixedly connected with a liquid inlet pipe, the front side of the upper die is fixedly connected with a liquid outlet pipe, and cooling pipelines are arranged around the inside of the upper die.

Preferably, the liquid inlet pipe and the liquid outlet pipe are communicated with the cooling pipeline.

Preferably, the bottom of the upper die is provided with a second groove.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the first hydraulic cylinder and the second hydraulic cylinder are arranged, the first hydraulic cylinder enables the lower die to slide downwards, the second hydraulic cylinder enables the upper die to slide upwards, the lower die is lowered to a certain height, the ejector rod is in contact with the sliding plate, the reset spring is compressed, the fixed column and the first ejector block slide upwards, the sliding rod and the second ejector block slide downwards relative to the upper die while the upper die slides upwards, the bidirectional lifting of the upper and lower parts of the die is realized, the cooling pipeline can avoid uneven cooling of plastics as much as possible, and the first ejector block and the second ejector block can effectively eject hardware plastics formed or cracked in the upper and lower dies through bidirectional lifting, so that the die is easier to be released.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a right side view of the present utility model;

FIG. 4 is a cross-sectional view at A-A in FIG. 3;

fig. 5 is a cross-sectional view at B-B in fig. 3.

The reference numerals in the figures are: 1. a bottom plate; 2. a guide post; 3. a top plate; 4. a first hydraulic cylinder; 5. a lifting rod; 6. a lower mold; 7. a groove I; 8. a slide plate; 9. fixing the column; 10. a return spring; 11. a first top block; 12. a push rod; 13. injection molding a tube; 14. a cylinder support; 15. a second hydraulic cylinder; 16. an upper mold; 17. a slide bar; 18. a second top block; 19. a liquid inlet pipe; 20. a liquid outlet pipe; 21. a cooling pipe; 22. and a groove II.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

Referring to fig. 1-5, a lifting structure for plastic hardware mold comprises a bottom plate 1, guide posts 2 are fixedly connected at four corners of the upper side of the bottom plate 1, the effective functions of accurately positioning and supporting the mold in lifting are achieved, top plates 3 are fixedly connected at the upper ends of four groups of guide posts 2, a first hydraulic cylinder 4 is fixedly arranged at the central position of the upper side of the bottom plate 1, a lower mold 6 is effectively slid downwards, a lifting rod 5 is fixedly connected at the output end of the first hydraulic cylinder 4, a lower mold 6 is fixedly connected at the upper end of the lifting rod 5, a groove 7 is formed at the upper side of the lower mold 6, different shapes are formed according to plastic hardware of different shapes, sliding plates 8 are slidingly connected on the surfaces of the lifting rod 5, fixing posts 9 are fixedly connected at the left and right ends of the upper side of the sliding plates 8, reset springs 10 are sleeved on the surfaces of the fixing posts 9, the upper end of the reset spring 10 is fixedly connected with the bottom of the lower die 6, the lower end of the reset spring 10 is fixedly connected with the top of the sliding plate 8, the upper end of the fixed column 9 penetrates through the bottom of the lower die 6 and is fixedly connected with a first ejector block 11, the first ejector block 11 is a rectangular block, the reset spring 10 enables the first ejector block 11 to be tightly attached to the lower die 6, molten plastics are prevented from flowing out of a gap, ejector rods 12 are fixedly connected to the upper side of the bottom plate 1 and the left end and the right end of the first hydraulic cylinder 4, the ejector rods 12 are higher than the first hydraulic cylinder 4, the sliding plate 8 is effectively propped up, the fixed column 9 slides upwards, plastic hardware attached to the lower die 6 is more easily ejected out through the first ejector block 11, the rear end of the lower side of the lower die 6 is fixedly connected with an injection molding pipe 13 through a fixing piece, and the upper end of the injection molding pipe 13 is communicated with the inside of the groove 7.

The cylinder support 14 is fixedly connected to the center position of the lower side of the top plate 3, the second hydraulic cylinder 15 is fixedly arranged in the cylinder support 14, the upper die 16 is effectively enabled to slide upwards, the output end of the second hydraulic cylinder 15 penetrates through the bottom of the cylinder support 14 and is fixedly connected with the upper die 16, the four corners of the lower die 6 and the upper die 16 are both in sliding connection with the surface of the guide post 2, the sliding rods 17 are fixedly connected to the left end and the right end of the lower side of the cylinder support 14, the lower end of each sliding rod 17 penetrates through the top of the upper die 16 and is fixedly connected with the second ejector block 18, plastic hardware attached to the upper die 16 is effectively ejected out through the second ejector block 18, the liquid inlet pipe 19 is fixedly connected to the front side of the upper die 16, the cooling pipeline 21 is arranged around the inner side of the upper die 16, the liquid inlet pipe 19 and the liquid outlet pipe 20 are both communicated with the cooling pipeline 21, the plastic hardware is uniformly cooled through circulating cooling liquid, stress cracking of the plastic hardware is avoided, the bottom of the upper die 16 is provided with the grooves two 22, and different shapes of the plastic hardware are formed according to different shapes.

Working principle: according to the plastic hardware shapes of different shapes, different grooves are formed in the inner sides of a lower die 6 and an upper die 16, under the action of a first hydraulic cylinder 4 and a second hydraulic cylinder 15, the lower die 6 and the upper die 16 are lifted through a guide post 2, die assembly is carried out, plastic injection is carried out through an injection pipe 13, after injection is completed, cooling liquid is injected through a liquid inlet pipe 19, the cooling liquid enters a cooling pipeline 21 to uniformly cool the plastic hardware, after cooling is completed, the cooling liquid is discharged, the first hydraulic cylinder 4 enables the lower die 6 to slide downwards, the second hydraulic cylinder 15 enables the upper die 16 to slide upwards, the lower die 6 is lowered to a certain height, a push rod 12 is in contact with a sliding plate 8, a reset spring 10 is compressed, a fixed post 9 and a first push block 11 slide upwards, plastic hardware attached in the lower die 6 is ejected, demoulding is realized, and meanwhile, a slide rod 17 and a second push block 18 slide downwards relative to the upper die 16, so that plastic attached in the upper die 16 is ejected out.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a plastic hardware lifting structure for mould, includes bottom plate (1), its characterized in that: the utility model discloses a hydraulic cylinder, including bottom plate (1), slide (8), cylinder (14), cylinder (6) are connected with each other, bottom plate (1) upside four corners position department all fixedly connected with guide post (2), four groups guide post (2) upper end all fixedly connected with roof (3), bottom plate (1) upside central point department fixedly connected with first hydraulic cylinder (4), the output fixedly connected with lifter (5) of first hydraulic cylinder (4), lifter (5) upper end fixedly connected with lower part mould (6), recess one (7) are seted up to lower part mould (6) upside, lifter (5) surface sliding connection has slide (8), slide (8) upside both ends all fixedly connected with fixed column (9), reset spring (10) have been cup jointed on the surface of fixed column (9), reset spring (10) upper end and the bottom fixedly connected with lower part of lower part mould (6), the lower part fixedly connected with lifter (5), fixed column (9) upper end through lower part mould (6) bottom and fixedly connected with top block (11), first cylinder (14) are connected with the bottom of cylinder (14), cylinder (14) is fixedly connected with top plate (15), the left end and the right end of the lower side of the cylinder support (14) are fixedly connected with slide bars (17), and the lower ends of the slide bars (17) penetrate through the top of the upper die (16) and are fixedly connected with second ejector blocks (18).

2. The lifting structure for plastic hardware molds of claim 1, wherein: the four corners of the lower die (6) and the upper die (16) are slidably connected with the surfaces of the guide posts (2).

3. The lifting structure for plastic hardware molds of claim 1, wherein: ejector rods (12) are fixedly connected to the upper side of the bottom plate (1) and the left end and the right end of the first hydraulic cylinder (4).

4. The lifting structure for plastic hardware molds of claim 1, wherein: the rear end of the lower side of the lower die (6) is fixedly connected with an injection molding pipe (13) through a fixing piece, and the upper end of the injection molding pipe (13) is communicated with the inside of the first groove (7).

5. The lifting structure for plastic hardware molds of claim 1, wherein: the back side of the upper die (16) is fixedly connected with a liquid inlet pipe (19), the front side of the upper die (16) is fixedly connected with a liquid outlet pipe (20), and cooling pipelines (21) are arranged around the inside of the upper die (16).

6. The lifting structure for plastic hardware molds of claim 5, wherein: the liquid inlet pipe (19) and the liquid outlet pipe (20) are communicated with the cooling pipeline (21).

7. The lifting structure for plastic hardware molds of claim 1, wherein: and a second groove (22) is formed in the bottom of the upper die (16).