CN210851172U

CN210851172U - Double-elbow forming die structure

Info

Publication number: CN210851172U
Application number: CN201921836586.XU
Authority: CN
Inventors: 刘惠强
Original assignee: Shenzhen Hexinghong Plastic Processing Co ltd
Current assignee: Shenzhen Hexinghong Plastic Processing Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-26
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a double-elbow forming die structure, which comprises an upper die fixing plate and a lower die fixing plate, wherein the lower surface of the upper die fixing plate is fixed with an upper die through a first bolt, the upper surface of the lower die fixing plate is fixed with a lower die through a second bolt, two groups of cavities are formed between the upper die and the lower die, first guide blocks are symmetrically fixed on two sides of the outer wall of the lower die through a third bolt, a cylinder is welded on each first guide block, a clamping block is welded at the tail end of a piston rod of the cylinder, the clamping block is clamped with a first push block, a first cavity closing block is connected on one side of the first push block far away from the clamping block in a threaded manner, a second guide block is welded on one side of the outer wall of the lower die, the cylinder is fixed on each second guide block through a fourth bolt, the tail end of the piston rod of, the production efficiency is high, and the fashioned return bend tip does not have the weld mark, and the shaping is effectual.

Description

Double-elbow forming die structure

Technical Field

The utility model relates to a return bend shaping technical field specifically is a double bend forming die structure.

Background

The plastic bent pipe is mainly used for infusion and is generally used as a joint for connecting two groups of pipelines at the bent part of the pipeline. The plastic bent pipe is generally produced in batches by adopting an injection molding mode, and is formed by designing an upper die and a lower die according to product specifications, injecting hot-melt plastic after die assembly and cooling.

Most of the existing pipe forming die structures can only produce a group of bent pipes simultaneously, the production efficiency is low, the two ends of the bent pipes are sealed by the dies, the end parts of the bent pipes are easy to generate weld marks after forming, and the forming effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two return bend forming die structures, but two sets of return bends of injection moulding simultaneously, production efficiency is high, and fashioned return bend tip does not have the heat sealing trace, and the shaping is effectual to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a double-elbow forming die structure comprises an upper die fixing plate and a lower die fixing plate, wherein an upper die is fixed on the lower surface of the upper die fixing plate through a first bolt, an injection port is formed in the middle of the upper die fixing plate in a penetrating mode, a lower die is fixed on the upper surface of the lower die fixing plate through a second bolt, two groups of cavities are formed between the upper die and the lower die, the bottom end of the injection port penetrates through the lower surface of the upper die and is communicated with the top of the cavity, first guide blocks are symmetrically fixed on two sides of the outer wall of the lower die through third bolts, cylinders are welded on the first guide blocks, clamping blocks are welded at the tail ends of piston rods of the cylinders and are clamped with first push blocks, the first push blocks are slidably connected onto the first guide blocks, a first cavity closing block is connected onto one side, away from the clamping blocks, a second guide block is welded on one side of the outer wall of the lower die, the end of a piston rod of the air cylinder is welded with a clamping block, the clamping block is clamped with a second pushing block, the second pushing block is connected to a second guide block in a sliding mode, and a second cavity sealing block is connected to one side, far away from the clamping block, of the second pushing block in a threaded mode.

Preferably, guide pillars are fixedly inserted at four corners of the upper surface of the lower die, and the upper die is slidably connected to the guide pillars.

Preferably, the first bolt and the second bolt are provided with six groups.

Preferably, the top end of the injection molding opening is glued with an elastic rubber gasket.

Preferably, the top end of the injection molding opening is fixed with an annular guide block through a fourth bolt.

Preferably, the two groups of cavities are symmetrically arranged.

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

drive two sets of first ejector pads and a set of second ejector pad motion respectively through three groups of cylinders, and then one side of keeping away from first ejector pad on the two sets of first cavity enclosed mass of control is plugged up the one end of two sets of cavities respectively and is kept away from one side of second ejector pad on the control second cavity enclosed mass and all plugs up the one end of two sets of cavities, hot melt plastics are shunted to two sets of cavities through the mouth of moulding plastics, accomplish the injection moulding of two sets of return bends simultaneously, this mould structure can be injection moulding two sets of return bends simultaneously, high production efficiency, fashioned return bend tip does not have the weld mark, the shaping is effectual.

Drawings

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

fig. 2 is a schematic structural view of a first guide block of the present invention;

FIG. 3 is a schematic structural view of a lower mold fixing plate of the present invention;

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

fig. 5 is a schematic top view of the lower mold of the present invention;

fig. 6 is the schematic view of the sectional structure of the injection molding opening of the present invention.

In the figure: 1. an upper die fixing plate; 2. a lower die fixing plate; 3. a first bolt; 4. an upper die; 5. an injection molding port; 6. a second bolt; 7. a lower die; 8. a cavity; 9. a third bolt; 10. a first guide block; 11. a fourth bolt; 12. a cylinder; 13. a clamping block; 14. a first push block; 15. a first cavity block; 16. a second guide block; 17. a second push block; 18. a second cavity block; 19. a guide post; 20. an elastic rubber gasket; 21. and an annular guide block.

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.

Referring to fig. 1-6, the present invention provides a technical solution: a double-bent-pipe forming die structure comprises an upper die fixing plate 1 and a lower die fixing plate 2, wherein an upper die 4 is fixed on the lower surface of the upper die fixing plate 1 through a first bolt 3, a lower die 7 is fixed on the upper surface of the lower die fixing plate 2 through a second bolt 6, six groups of first bolts 3 and six groups of second bolts 6 are arranged, in order to facilitate the tight positioning and attaching of the upper die 4 and the lower die 7, guide pillars 19 are inserted and fixed at four corners of the upper surface of the lower die 7, and the upper die 4 is connected to the guide pillars 19 in a sliding manner;

an injection port 5 penetrates through the upper middle part of the upper die fixing plate 1, an annular guide block 21 is fixed at the top end of the injection port 5 through a fourth bolt 11, so that the injection after die assembly is facilitated, in order to enhance the connection tightness of the annular guide block 21 at the injection port 5, an elastic rubber gasket 20 is glued to the top end of the injection port 5, two groups of cavities 8 are formed between the upper die 4 and the lower die 7, the two groups of cavities 8 are symmetrically arranged, and the bottom end of the injection port 5 penetrates through the lower surface of the upper die 4 and is communicated with the top of the cavity;

first guide blocks 10 are symmetrically fixed on two sides of the outer wall of the lower die 7 through third bolts 9, a cylinder 12 is welded on the first guide block 10, a fixture block 13 is welded at the tail end of a piston rod of the cylinder 12, the fixture block 13 is clamped with a first push block 14, the first push block 14 is connected on the first guide block 10 in a sliding mode, a first cavity closing block 15 is connected on one side, far away from the fixture block 13, of the first push block 14 in a threaded mode, one sides, far away from the first push block 14, of the two groups of first cavity closing blocks 15 are respectively blocked at one ends of the two groups of cavities 8 under the action of the cylinder 12 before injection molding, a second guide block 16 is welded on one side of the outer wall of the lower die 7, the cylinder 12 is fixed on the second guide block 16 through a fourth bolt 11, the fixture block 13 is welded at the tail end of the piston rod of the cylinder 12, the fixture block 13 is clamped with the second push block 17, the second push block 17 is connected on the second guide block 16, before injection molding, one side of the second cavity closing block 18, which is far away from the second pushing block 17, blocks one ends of the two groups of cavities 8 under the action of the cylinder 12.

The three groups of cylinders 12 are all controlled by an external switch.

The working principle is as follows: after the upper die 4 and the lower die 7 are assembled, one side of each of the two groups of first cavity sealing blocks 15, which is far away from the first push block 14, respectively plugs one ends of the two groups of cavities 8 under the action of the cylinder 12, one side of each of the second cavity sealing blocks 18, which is far away from the second push block 17, plugs one ends of the two groups of cavities 8 under the action of the cylinder 12, hot-melt plastic is injected into the annular guide block 21, and the hot-melt plastic is shunted into the two groups of cavities 8 through the injection molding port 5, so that the injection molding of the two groups of bent pipes is completed simultaneously.

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. The utility model provides a two return bend forming die structure, includes upper die fixing plate (1) and lower die fixing plate (2), its characterized in that: the lower surface of the upper die fixing plate (1) is fixed with an upper die (4) through a first bolt (3), the upper middle part of the upper die fixing plate (1) is penetrated and provided with an injection molding port (5), the upper surface of the lower die fixing plate (2) is fixed with a lower die (7) through a second bolt (6), two groups of cavities (8) are formed between the upper die (4) and the lower die (7), the bottom end of the injection molding port (5) penetrates through the lower surface of the upper die (4) and is communicated with the tops of the cavities (8), the two sides of the outer wall of the lower die (7) are symmetrically fixed with first guide blocks (10) through third bolts (9), the first guide blocks (10) are welded with cylinders (12), the tail ends of piston rods of the cylinders (12) are welded with clamping blocks (13), the clamping blocks (13) are clamped with first push blocks (14), the first push blocks (14) are slidably connected on the first, keep away from fixture block (13) one side threaded connection on first ejector pad (14) and have first cavity closing block (15), lower mould (7) outer wall one side welding has second guide block (16), be fixed with cylinder (12) through fourth bolt (11) on second guide block (16), the terminal welding of piston rod of cylinder (12) has fixture block (13), fixture block (13) and second ejector pad (17) joint, second ejector pad (17) sliding connection is on second guide block (16), keep away from fixture block (13) one side threaded connection on second ejector pad (17) and have second cavity closing block (18).

2. The double elbow forming die structure according to claim 1, wherein: guide posts (19) are fixedly inserted at four corners of the upper surface of the lower die (7), and the upper die (4) is connected to the guide posts (19) in a sliding manner.

3. The double elbow forming die structure according to claim 1, wherein: the first bolt (3) and the second bolt (6) are provided with six groups.

4. The double elbow forming die structure according to claim 1, wherein: the top end of the injection molding port (5) is glued with an elastic rubber gasket (20).

5. The double elbow forming die structure according to claim 1, wherein: and an annular guide block (21) is fixed at the top end of the injection molding port (5) through a fourth bolt (11).

6. The double elbow forming die structure according to claim 1, wherein: the two groups of cavities (8) are symmetrically arranged.