CN211590940U

CN211590940U - Mould convenient to adjust internal diameter for producing plastic pipe cap

Info

Publication number: CN211590940U
Application number: CN202020144476.3U
Authority: CN
Inventors: 崔庆平; 张桂亮; 金东�
Original assignee: Tianjin Xinlinhao Plastic Packaging Products Co ltd
Current assignee: Tianjin Xinlinhao Plastic Packaging Products Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-09-29
Anticipated expiration: 2030-01-22

Abstract

The utility model discloses a mould convenient to adjust internal diameter is used in production of plastics pipe cap, including last mould, plastics pipe cap and lower mould, the lower mould is rectangle massive structure, open at the lower mould middle part has the connection screw mouth, the inside core shaft chamber that has to be annular array distribution of opening of lower mould around the connection screw mouth, be fixed with the mold core on the lower mould of connection screw mouth top, the mold core passes the connection screw mouth through the connection screw and gets into that the mold core is inside fixed with the lower mould, the four corners portion of lower mould divides respectively to open has a set of vertically lower axle chamber, it has the pinhole to open on the lower mould of lower axle chamber downside, the inside location axle that is inserted of lower axle chamber, the through-hole inside of location axle downside is inserted and is equipped with the connecting pin, the both ends of connecting pin are located inside its adjacent pinhole, the profile of going up the mould is the box-. This mould of inner diameter is convenient for adjust with plastics pipe cap production, the inner diameter of plastics pipe cap is adjusted to the mode that the mold core was changed to the accessible, is fit for generally using widely.

Description

Mould convenient to adjust internal diameter for producing plastic pipe cap

Technical Field

The utility model belongs to the technical field of the plastics pipe cap, concretely relates to plastics pipe cap production is with mould convenient to adjust internal diameter.

Background

In the technical field of the existing pipeline, a plastic pipeline is a very common pipeline with wide application, a pipe cap is a relatively common pipeline closing tool when the plastic pipeline closes the pipeline, and the pipeline can select the pipe cap made of the same material as the pipeline when the corresponding pipe cap is selected.

The plastic pipe cap is produced by using a mold, but for some manufacturers, the possibility of manufacturing plastic pipe caps with different inner diameters exists, the size change of the mold means that a new mold needs to be manufactured, and the cost for customizing the new mold for manufacturing the plastic pipe cap with only the changed inner diameter is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mould of being convenient for adjust the internal diameter is used in production of plastics pipe cap to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a mold convenient for adjusting the inner diameter for producing a plastic pipe cap comprises an upper mold, the plastic pipe cap and a lower mold, wherein the lower mold is of a rectangular block structure, a connecting screw hole is formed in the middle of the lower mold, a mandrel cavity distributed in an annular array is formed in the lower mold around the connecting screw hole, a mandrel is fixed on the lower mold above the connecting screw hole, the mandrel penetrates through the connecting screw hole to enter the inside of the mandrel to be fixed with the lower mold, a group of vertical lower shaft cavities are formed in the four corners of the lower mold, pin holes are formed in the lower mold on the lower side of each lower shaft cavity, a positioning shaft is inserted in each lower shaft cavity, a connecting pin is inserted in each through hole on the lower side of the positioning shaft, and two ends of each connecting pin are located in the adjacent pin holes;

the profile of the upper die is of a rectangular box-packed structure, four groups of upper shaft cavities are formed in the upper die, a cavity with a downward opening is formed in the center of the inner portion of the upper die, two groups of injection ports are formed above the cavity, an oil cavity is formed in the portion of the outer side of the cavity of the upper die, and the oil cavity is provided with an oil injection port and an oil outlet.

Preferably, the position in dabber chamber corresponds with the axle column structure position of erectting below the die core, the axle column structure of die core below is located dabber intracavity portion, the cover is equipped with the gasket on the connecting screw.

Preferably, the edge of the upper end of the positioning shaft is chamfered.

Preferably, the position of the upper shaft cavity corresponds to the position of the lower shaft cavity, and the lower end edge of the upper shaft cavity is provided with a chamfer.

Preferably, the plastic pipe cap is positioned inside the lower die and the upper die, and the contour of an interlayer between the cavity of the upper die and the die core corresponds to the contour of the plastic pipe cap.

Preferably, the lower surface of the block structure on the upper side of the mold core is tightly attached to the upper surface of the lower mold.

The utility model discloses a technological effect and advantage: the mold with the inner diameter convenient to adjust is used for producing the plastic pipe cap, the inner diameter of the plastic pipe cap is determined by the outer size of the mold core, the inner diameter of the plastic pipe cap can be changed in a mode of replacing the mold core, and compared with the mold which is integrally replaced, the mold only needs to be replaced at a lower cost, so that the purpose of saving the cost is achieved; the chamfer angle of the positioning shaft is beneficial to the combination of the upper die and the lower die, so that the combination of the upper die and the lower die is smoother; the disassembly operation of the die core fixed by the connecting screw is simpler.

Drawings

Fig. 1 is a schematic diagram of the structure of the present invention in a separated state;

FIG. 2 is a schematic view of the structure of the present invention in a combined state;

FIG. 3 is a schematic view of the cross-section of the present invention;

FIG. 4 is a schematic view of a cross-section of the upper mold of the present invention;

FIG. 5 is a schematic view of the cross-section of the plastic pipe cap of the present invention;

FIG. 6 is an exploded view of the lower mold and its connecting structure of the present invention;

fig. 7 is a schematic view of a lower side structure of the lower mold of the present invention.

In the figure: the plastic pipe comprises an upper die 1, a 101 feeding port, a 102 feeding port, a 103 oil cavity, a 104 upper shaft cavity, a 105 oil outlet, a 2 plastic pipe cap, a 3 lower die, a 301 connecting pin, a 302 die core, a 303 positioning shaft, a 304 sealing sheet, a 305 connecting screw, a 306 pin hole, a 307 die core cavity, a 308 lower shaft cavity and a 309 connecting screw port.

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.

The utility model provides a die which is used for producing plastic pipe caps and is convenient for adjusting the inner diameter, as shown in figures 1-7, comprising an upper die 1, a plastic pipe cap 2 and a lower die 3, the lower die 3 is a rectangular block structure, the middle part of the lower die 3 is provided with a connecting screw hole 309, the lower die 3 around the connecting screw port 309 is internally provided with mandrel cavities 307 distributed in an annular array, a mold core 302 is fixed on the lower mold 3 above the connecting screw port 309, the mold core 302 enters the mold core 302 through the connecting screw port 309 by a connecting screw 305 and is fixed with the lower mold 3, the four corners of the lower die 3 are respectively provided with a group of vertical lower shaft cavities 308, the lower die 3 at the lower side of the lower shaft cavities 308 is provided with pin holes 306, a positioning shaft 303 is inserted into the lower shaft cavity 308, a connecting pin 301 is inserted into a through hole at the lower side of the positioning shaft 303, and two ends of the connecting pin 301 are positioned in the adjacent pin holes 306;

the profile of the upper die 1 is of a rectangular box-packed structure, four groups of upper shaft cavities 104 are formed in the upper die 1, a cavity with a downward opening is formed in the center of the inner portion of the upper die 1, two groups of injection ports 101 are formed above the cavity, an oil cavity 103 is formed in the portion of the outer side of the cavity of the upper die 1, and the oil cavity 103 is provided with an oil injection port 102 and an oil outlet 105.

Specifically, the position of the mandrel cavity 307 corresponds to the position of the vertical shaft-shaped structure below the mandrel 302, the shaft-shaped structure below the mandrel 302 is located inside the mandrel cavity 307, the sealing plate 304 is sleeved on the connecting screw 305, and the sealing plate 304 prevents gas inside the cavity from leaking out of a thread gap of the connecting screw 305.

Specifically, the edge of the upper end of the positioning shaft 303 is provided with a chamfer, so that the operation difficulty in the installation of the upper die 1 is reduced.

Specifically, the position of the upper shaft cavity 104 corresponds to the position of the lower shaft cavity 308, and the lower end edge of the upper shaft cavity 104 is provided with a chamfer, so that the upper shaft cavity can be conveniently matched with the chamfer of the upper end edge of the positioning shaft 303.

Specifically, the plastic pipe cap 2 is located inside the lower die 3 and the upper die 1, the contour of an interlayer between the cavity of the upper die 1 and the die core 302 corresponds to the contour of the plastic pipe cap 2, the specific contour of the plastic pipe cap 2 is determined by the contour of the interlayer, and the interlayer is a cavity.

Specifically, the lower surface of the block structure on the upper side of the mold core 302 is tightly attached to the upper surface of the lower mold 3, so that filled plastic is prevented from entering a gap between the mold core 302 and the lower mold 3.

Specifically, the mold with the inner diameter convenient to adjust for plastic pipe cap production can be used for heating cold and hot media, adding the cold and hot media into the oil cavity 103 to help the mold adjust the temperature, adding the cold and hot media from the oil inlet 102, discharging the cold and hot media from the oil outlet 105, introducing plastic liquid from the injection port 101, forming the plastic pipe cap 2 after the plastic liquid is matched and shaped by the upper mold 1, the plastic pipe cap 2 after being cooled, separating the upper mold 1 from the lower mold 3, taking out the plastic pipe cap 2, screwing out the connecting screw 305 when replacing the mold core 302 to detach the mold core 302, adjusting the inner diameter of the plastic pipe cap 2 to be the outer diameter of the mold core 302, adjusting the outer diameter of the mold core 302 by turning the outer circular surface of the mold core 302 or increasing a sleeve, customizing a plurality of mold cores 302 with different sizes optimally, and installing the mold cores 302 with.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a mould of internal diameter is convenient for adjust with plastics pipe cap production, includes mould (1), plastics pipe cap (2) and lower mould (3), its characterized in that: the lower die (3) is of a rectangular block structure, the middle part of the lower die (3) is provided with a connecting screw hole (309), a mandrel cavity (307) distributed in an annular array is formed in the lower die (3) around the connecting screw hole (309), a mold core (302) is fixed on the lower mold (3) above the connecting screw hole (309), the mold core (302) passes through a connecting screw port (309) through a connecting screw (305) and enters the interior of the mold core (302) to be fixed with the lower mold (3), the four corners of the lower die (3) are respectively provided with a group of vertical lower shaft cavities (308), a pin hole (306) is arranged on the lower die (3) at the lower side of the lower shaft cavity (308), a positioning shaft (303) is inserted in the lower shaft cavity (308), a connecting pin (301) is inserted in a through hole at the lower side of the positioning shaft (303), the two ends of the connecting pin (301) are positioned in the adjacent pin holes (306);

the profile of the upper die (1) is of a rectangular box-packed structure, four groups of upper shaft cavities (104) are formed in the upper die (1), a cavity with a downward opening is formed in the center of the interior of the upper die (1), two groups of injection ports (101) are formed above the cavity, an oil cavity (103) is formed in the outer side of the cavity of the upper die (1), and the oil cavity (103) is provided with an oil injection port (102) and an oil outlet (105).

2. The mold for producing the plastic pipe cap convenient for adjusting the inner diameter as claimed in claim 1, wherein: the position of mandrel cavity (307) corresponds with the axle form structure position of erectting below mandrel (302), the axle form structure of mandrel (302) below is located inside mandrel cavity (307), the cover is equipped with gasket (304) on connecting screw (305).

3. The mold for producing the plastic pipe cap convenient for adjusting the inner diameter as claimed in claim 1, wherein: the edge of the upper end of the positioning shaft (303) is provided with a chamfer.

4. The mold for producing the plastic pipe cap convenient for adjusting the inner diameter as claimed in claim 1, wherein: the position of the upper shaft cavity (104) corresponds to the position of the lower shaft cavity (308), and the edge of the lower end of the upper shaft cavity (104) is provided with a chamfer.

5. The mold for producing the plastic pipe cap convenient for adjusting the inner diameter as claimed in claim 1, wherein: the plastic pipe cap (2) is positioned inside the lower die (3) and the upper die (1), and the contour of an interlayer between the cavity of the upper die (1) and the die core (302) corresponds to the contour of the plastic pipe cap (2).

6. The mold for producing the plastic pipe cap convenient for adjusting the inner diameter as claimed in claim 1, wherein: the lower surface of the block structure on the upper side of the mold core (302) is tightly attached to the upper surface of the lower mold (3).