CN213500539U - Tunnel type core-pulling 50x 90-degree water-following three-way 4-cavity pipe fitting mold - Google Patents

Abstract

The utility model relates to a pipe fitting mould field just discloses tunnel type 50x90 degrees in the same direction as water three-way 4 chamber pipe fitting mould of loosing core, including the upper cover plate, the upper end surface of upper cover plate is provided with the mouth of moulding plastics, one side of upper cover plate is provided with solid fixed ring, the lower extreme of upper cover plate is provided with supplementary piece, the lower extreme of supplementary piece is provided with the limiting plate, the lower extreme of limiting plate is provided with the bottom plate, the lower extreme of upper cover plate is provided with the upper fixed plate, one side of upper fixed plate is provided with the protection piece No. one, the front end of upper cover plate is provided with the protection piece No. two, the inside of upper fixed plate is provided with the spliced pole of moulding plastics, the lower extreme of spliced pole of. This tunnel type is loosed core 50x90 degrees and is moved forward water tee bend 4 chamber pipe fitting mould, and the mould chamber number is 4 chambeies, and is less to the demand of the model of moulding plastics, and is with high costs efficient, and material saving, customer can also the large batch production product, have better use prospect.

Description

Tunnel type core-pulling 50x 90-degree water-following three-way 4-cavity pipe fitting mold

Technical Field

The utility model relates to a pipe fitting mould technical field specifically is tunnel type 50x90 degrees of loosing core in the same direction as water three-way 4 chamber pipe fitting mould.

Background

With the development of the building industry, the tunnel core pulling 50x 90-degree downstream three-way 4-cavity pipe fitting mold is widely used, and the tunnel core pulling 50x 90-degree downstream three-way 4-cavity pipe fitting mold is a mold for manufacturing 4-cavity pipe fittings.

However, the existing tunnel type core-pulling 50x 90-degree water-following three-way 4-cavity pipe fitting mold has certain defects when in use, the number of the mold cavities of the existing 50x 90-degree water-following three-way 4-cavity pipe fitting mold is basically 2, the larger the number of the cavities is, the larger the requirement on the injection molding machine type is, the high cost and the low efficiency are caused, great waste is caused, and a client cannot produce products in large batch, so that the tunnel type core-pulling 50x 90-degree water-following three-way 4-cavity pipe fitting mold is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a tunnel type 50x90 degrees of loosing core is in the same direction as water three-way 4 chamber pipe fitting mould, and the mould chamber number is 4 chambeies, and the chamber number is more just less to the demand of the model of moulding plastics, and is with low costs, and is efficient, carries out very big saving, and the problem of customer can also large batch production product.

(II) technical scheme

For realizing above-mentioned possesses that the mould chamber number is 4 chambeies, the chamber number is more just less to the demand of the model of moulding plastics, and is with low costs, efficient, carries out very big saving, and the customer can also be large batch production product, the utility model provides a following technical scheme: the tunnel type core-pulling three-way 4-cavity pipe fitting mold with the temperature of 50x90 degrees comprises an upper cover plate, wherein an injection molding opening is formed in the outer surface of the upper end of the upper cover plate, a fixing ring is arranged on one side of the upper cover plate, an auxiliary block is arranged at the lower end of the upper cover plate, a limiting plate is arranged at the lower end of the auxiliary block, a bottom plate is arranged at the lower end of the limiting plate, an upper fixing plate is arranged at the lower end of the upper cover plate, a first protection block is arranged on one side of the upper fixing plate, a second protection block is arranged at the front end of the upper cover plate, an injection molding connecting column is arranged inside the upper fixing plate, an injection molding pipeline is arranged at the lower end of the injection molding connecting column, an injection molding head is arranged on the outer surface of the injection molding pipeline, connecting pipe grooves, the upper end of the three-way pipe groove is provided with a three-way pipe die, the inner side of the limiting plate is provided with a supporting plate, the upper end of the supporting plate is provided with a connecting pile, the outer side of the connecting pile is provided with a spring, and the upper end of the supporting plate is provided with a limiting column.

Preferably, one side fixedly connected with supporting legs of limiting plate, and supporting legs quantity is four groups and is the symmetry and arranges, the supporting legs is made for non-metallic material, the upper end surface fixedly connected with annular post of supplementary piece, and the diameter of annular post is less than the diameter of supplementary piece, the upper end surface swing joint of annular post has the erection column, and the quantity of supplementary piece, annular post, erection column is four groups and is the rectangle and arranges, the stopper has been inlayed in the outside of limiting plate, and stopper quantity is four groups and is the rectangle and arranges.

Preferably, the surface of one side of upper cover plate and the outer fixed surface of auxiliary block are connected with the connecting block, and the quantity of connecting the piece be two sets of and be the symmetry and arrange, the outside swing joint of connecting block has a bolt, and a bolt quantity be two sets of and be the symmetry and arrange, the lower extreme surface swing joint of No. two protection pieces has a backing plate, No. two backing plates of lower extreme outer fixed surface fixedly connected with of a protection piece, No. two bolts have been run through to the upper end surface of upper fixed plate, and No. two bolt quantity be four groups and be the rectangle and arrange, the upper end surface of upper fixed plate has run through the through-hole, and the through-hole is the rectangle and arranges.

Preferably, the outer surface of the first protection block is movably connected with a first auxiliary plate, the first auxiliary plate is of a rectangular structure, the outer side of the first auxiliary plate is fixedly connected with four bolts, the number of the three bolts is four, the three bolts are arranged in a rectangular shape, the outer side of the second protection block is movably connected with a second auxiliary plate, the number of the second auxiliary plate is four, the two auxiliary plates are arranged in a parallel shape, the outer side of the second auxiliary plate is movably connected with four bolts, the four bolts are identical to the three bolts in shape, the outer surface of the upper end of the three-way pipe mold is fixedly connected with a first support rod, the first support rod is of a cuboid structure, the upper end of the three-way pipe mold is movably connected with a second support rod, and the cross-sectional areas of the first support rod and the second support rod are identical.

Preferably, be fixed connection between upper cover plate and the mouth of moulding plastics, and the mouth of moulding plastics is the ring structure, the solid fixed ring of one side surface of upper cover plate and the equal fixedly connected with of one side surface of limiting plate, and solid fixed ring makes for metal material, be fixed connection between limiting plate and the bottom plate, be swing joint between a protection piece and the upper fixed plate, and the upper fixed plate is the hollow rectangle structure, be swing joint between No. two protection pieces and the upper fixed plate, and the length of No. two protection pieces is greater than the length of a protection piece.

Preferably, be fixed connection between an upper fixed plate and the spliced pole of moulding plastics, and the spliced pole of moulding plastics is the hollow circular cylinder structure, be fixed connection between spliced pole of moulding plastics and the pipeline of moulding plastics, and the pipeline of moulding plastics is C shape hollow structure, the pipeline of moulding plastics is made for high temperature resistant material with the spliced pole of moulding plastics, the outside fixedly connected with of the pipeline of moulding plastics is moulded plastics the head, and the head of moulding plastics is the toper structure, the head quantity of moulding plastics is four groups and arranges for the array.

Preferably, the connecting pipe groove has been inlayed to the upper end of limiting plate, and connecting pipe groove quantity is four groups and is the array and arranges, the upper end surface of limiting plate has inlayed the tee bend pipe box near one side in connecting pipe groove, and the tee bend pipe box is the semicylindrical structure and is the symmetry and arranges, the upper end surface swing joint in connecting pipe groove has the connecting pipe mould, and phase-match between connecting pipe mould and the connecting pipe groove, tee bend pipe groove upper end surface swing joint has the tee bend pipe mould, and phase-match between tee bend pipe mould and the tee bend pipe groove.

Preferably, the upper end surface fixed connection of bottom plate has the backup pad, and backup pad quantity is two sets of and be the perpendicular arrangement, the upper end surface fixed connection of backup pad has the connecting pile, and connecting pile quantity is four groups and be the rectangle and arrange, be swing joint between connecting pile and the spring, and the spring is elastic structure, the bottom plate has the auxiliary column with inside running through of backup pad, and auxiliary column quantity is four groups and be the rectangle and arrange, the upper end surface of backup pad runs through there is spacing post, and spacing post quantity is four groups and be the rectangle and arrange, spacing post is solid cylinder structure.

(III) advantageous effects

Compared with the prior art, the utility model provides a tunnel type 50x90 degrees of loosing core is in same direction as water three-way 4 chamber pipe fitting mould possesses following beneficial effect:

this tunnel type is loosed core 50x90 degree is along with water tee bend 4 chamber pipe fitting mould, break through traditional (2 chambeies) can not be on original injection molding machine type mass production's defect, it is few to have overcome (2 chambeies) on the market, the investment is big, production efficiency is low, unsuitable drawbacks such as big customer's production demand, utilize machinery to loose core, angle control combines the track principle, under simpler stable mechanical principle condition, the problem of the few inefficiency of chamber has been solved, simple board and accurate angle control system have fine stability simultaneously turn over, in addition 4 chambeies's design characteristics, do not receive the injection molding machine type restriction, have better popularization, can effectively improve manufacturing cost and efficiency, reduce the trouble that the customer needs cost high efficiency low in batches.

Drawings

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

fig. 2 is a schematic structural view of another view angle of the structure of fig. 1 of the present invention;

FIG. 3 is a schematic structural view of the present invention with the upper cover plate removed;

fig. 4 is a schematic structural view of the upper fixing plate of the structure diagram 3 of the present invention;

FIG. 5 is a schematic view of a partial structure of the present invention;

fig. 6 is a schematic structural view of another view angle of the structure of fig. 5 of the present invention;

FIG. 7 is a schematic structural view of the structural bottom plate and the injection molding pipeline of the present invention;

fig. 8 is a schematic structural view of the structural bottom plate and the supporting plate of the present invention.

In the figure: 1. an upper cover plate; 2. an injection molding port; 3. a fixing ring; 4. supporting legs; 5. an auxiliary block; 6. an annular column; 7. mounting a column; 8. a limiting block; 9. connecting blocks; 10. a first bolt; 11. a limiting plate; 12. a base plate; 13. a first backing plate; 14. a second base plate; 15. an upper fixing plate; 16. a second bolt; 17. a through hole; 18. a first protection block; 19. an auxiliary plate No. one; 20. a third bolt; 21. a second protection block; 22. a second auxiliary plate; 23. a fourth bolt; 24. injection molding a connecting column; 25. injecting a pipeline; 26. an injection head; 27. connecting a pipe groove; 28. a three-way pipe groove; 29. connecting the pipe mold; 30. a three-way pipe mold; 31. a first support rod; 32. a second support rod; 33. connecting piles; 34. a spring; 35. an auxiliary column; 36. a limiting column; 37. and a support plate.

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.

As shown in fig. 1-8, the tunnel type core pulling 50x90 degree water-following three-way 4-cavity pipe fitting mold comprises an upper cover plate 1, an injection molding port 2 is arranged on the outer surface of the upper end of the upper cover plate 1, a fixing ring 3 is arranged on one side of the upper cover plate 1, an auxiliary block 5 is arranged at the lower end of the upper cover plate 1, a limiting plate 11 is arranged at the lower end of the auxiliary block 5, a bottom plate 12 is arranged at the lower end of the limiting plate 11, an upper fixing plate 15 is arranged at the lower end of the upper cover plate 1, a first protection block 18 is arranged on one side of the upper fixing plate 15, a second protection block 21 is arranged at the front end of the upper cover plate 1, an injection connection column 24 is arranged inside the upper fixing plate 15, an injection molding pipeline 25 is arranged at the lower end of the injection connection column 24, an injection molding head 26 is arranged on the outer surface of the injection pipeline, the upper end of the three-way pipe groove 28 is provided with a three-way pipe die 30, the inner side of the limit plate 11 is provided with a support plate 37, the upper end of the support plate 37 is provided with a connecting pile 33, the outer side of the connecting pile 33 is provided with a spring 34, and the upper end of the support plate 37 is provided with a limit column 36.

One side fixedly connected with supporting legs 4 of limiting plate 11, and supporting legs 4 quantity is four groups and is the symmetry and arranges, supporting legs 4 are made for non-metallic material, the upper end surface fixedly connected with annular post 6 of supplementary piece 5, and the diameter of annular post 6 is less than the diameter of supplementary piece 5, the upper end surface swing joint of annular post 6 has erection column 7, and supplementary piece 5, annular post 6, the quantity of erection column 7 is four groups and is the rectangle and arranges, stopper 8 has been inlayed in the outside of limiting plate 11, and stopper 8 quantity is four groups and is the rectangle and arranges, be favorable to the use of supplementary piece 5.

One side surface of upper cover plate 1 and auxiliary block 5's external surface fixedly connected with connecting block 9, and the quantity of connecting block 9 is two sets of and be the symmetry and arrange, the outside swing joint of connecting block 9 has bolt 10 No. one, and bolt 10 quantity is two sets of and be the symmetry and arrange, the lower extreme surface swing joint of No. two protection pieces 21 has backing plate 13 No. one, No. two backing plates 14 of lower extreme external surface fixedly connected with of protection piece 18, the upper end surface of upper fixed plate 15 runs through there is No. two bolt 16, and No. two bolt 16 quantity are four sets of and be the rectangle and arrange, the upper end surface of upper fixed plate 15 runs through there is through-hole 17, and through-hole 17 is the rectangle and arranges, be favorable to placing of upper fixed plate 15.

The outer surface of the first protection block 18 is movably connected with a first auxiliary plate 19, the first auxiliary plate 19 is of a rectangular structure, the outer side of the first auxiliary plate 19 is fixedly connected with a third bolt 20, the number of the third bolts 20 is four groups and is arranged in a rectangular shape, the outer side of the second protection block 21 is movably connected with a second auxiliary plate 22, the number of the second auxiliary plate 22 is four groups and is arranged in a parallel shape, the outer side of the second auxiliary plate 22 is movably connected with a fourth bolt 23, the shape of the fourth bolt 23 is the same as that of the third bolt 20, the outer surface of the upper end of the three-way pipe die 30 is fixedly connected with a first support rod 31, the first support rod 31 is of a cuboid structure, the upper end of the three-way pipe die 30 is movably connected with a second support rod 32, the cross-sectional areas of the first support rod 31 and the second support rod 32 are the same, and the use of.

Upper cover plate 1 and mould plastics and be fixed connection between mouthful 2, and it is the ring structure to mould plastics mouthful 2, the solid fixed ring 3 of one side surface of upper cover plate 1 and the equal fixedly connected with of one side surface of limiting plate 11, and gu fixed ring 3 makes for metal material, be fixed connection between limiting plate 11 and the bottom plate 12, be swing joint between protection piece 18 and the upper fixed plate 15, and upper fixed plate 15 is the cavity rectangle structure, be swing joint between protection piece 21 and the upper fixed plate 15 No. two, and the length of protection piece 21 No. two is greater than the length of protection piece 18, be favorable to upper cover plate 1's use.

The upper fixing plate 15 is fixedly connected with the injection molding connecting column 24, the injection molding connecting column 24 is of a hollow cylindrical structure, the injection molding connecting column 24 is fixedly connected with the injection molding pipeline 25, the injection molding pipeline 25 is of a C-shaped hollow structure, the injection molding pipeline 25 and the injection molding connecting column 24 are made of high-temperature-resistant materials, the injection molding head 26 is fixedly connected to the outer side of the injection molding pipeline 25, the injection molding head 26 is of a conical structure, the number of the injection molding heads 26 is four groups and is arranged in an array, and the use of the injection molding pipeline 25 is facilitated.

Connecting pipe grooves 27 are embedded in the upper end of the limiting plate 11, the connecting pipe grooves 27 are four groups in number and are arranged in an array mode, three-way pipe grooves 28 are embedded in one side, close to the connecting pipe grooves 27, of the outer surface of the upper end of the limiting plate 11, the three-way pipe grooves 28 are of a semi-cylindrical structure and are symmetrically arranged, connecting pipe dies 29 are movably connected to the outer surfaces of the upper end of the connecting pipe grooves 27, the connecting pipe dies 29 are matched with the connecting pipe grooves 27, three-way pipe dies 30 are movably connected to the outer surfaces of the upper ends of the three-way pipe grooves 28, the three-way pipe dies 30 are matched with the three-way pipe grooves 28, and use of.

Bottom plate 12's upper end surface fixed connection has backup pad 37, and backup pad 37 quantity is two sets of and be perpendicular arranging, backup pad 37's upper end surface fixed connection has connecting pile 33, and connecting pile 33 quantity is four sets of and be the rectangle and arrange, be swing joint between connecting pile 33 and the spring 34, and spring 34 is elastic structure, bottom plate 12 and the inside auxiliary column 35 that has run through of backup pad 37, and auxiliary column 35 quantity is four sets of and be the rectangle and arrange, backup pad 37's upper end surface runs through has spacing post 36, and spacing post 36 quantity is four sets of and be the rectangle and arrange, spacing post 36 is solid cylinder structure, be favorable to bottom plate 12's use.

During operation, the user makes corresponding change on the pipe fitting mould in the past, break through traditional (2 chambeies) can not be on the original model of moulding plastics mass production's defect, it is few to have overcome (2 chambeies) on the market, the investment is big, production efficiency is low, unsuitable drawback such as big customer's production demand, utilize machinery to loose core, angle control combines the track principle, under the mechanical principle condition of simpler stable, the problem of the few inefficiency of chamber has been solved, simple board and accurate angle control system that turns over has fine stability simultaneously, in addition 4 chambeies's design characteristics, do not receive the model restriction of moulding plastics, better popularization has, convenient to use.

In conclusion, the tunnel type core-pulling three-way 4-cavity pipe fitting mold with the temperature of 50x90 degrees is capable of breaking through the defect that the traditional (2-cavity) mold cannot be produced in large batch on the original injection molding machine, overcoming the defects that the (2-cavity) mold on the market is small in number, large in investment, low in production efficiency, not suitable for production requirements of large customers and the like, and solving the problems that the number of cavities is small and the efficiency is low under the condition of a simpler and stable mechanical principle by utilizing the mechanical core-pulling and angle control and combining with the track principle. Simple board and accurate angle control have fine stability simultaneously, and 4 design characteristics in addition do not receive the model restriction of moulding plastics, have better popularization, can effectively improve manufacturing cost and efficiency, reduce the trouble that the big batch of customer needs cost high efficiency to hang down, have better application prospect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (8)

1. Tunnel type 50x90 degrees of loosing core is along water three-way 4 chamber pipe fitting moulds, including upper cover plate (1), its characterized in that: the injection molding device is characterized in that an injection molding port (2) is arranged on the outer surface of the upper end of the upper cover plate (1), a fixing ring (3) is arranged on one side of the upper cover plate (1), an auxiliary block (5) is arranged at the lower end of the upper cover plate (1), a limiting plate (11) is arranged at the lower end of the auxiliary block (5), a bottom plate (12) is arranged at the lower end of the limiting plate (11), an upper fixing plate (15) is arranged at the lower end of the upper cover plate (1), a first protective block (18) is arranged on one side of the upper fixing plate (15), a second protective block (21) is arranged at the front end of the upper cover plate (1), an injection molding connecting column (24) is arranged inside the upper fixing plate (15), an injection molding pipeline (25) is arranged at the lower end of the injection molding connecting column (24), an injection molding head (26) is arranged on, one side of connecting tube groove (27) is provided with tee bend tube tray (28), the upper end of connecting tube groove (27) is provided with connecting tube mould (29), the upper end of tee bend tube tray (28) is provided with tee bend tube mould (30), the inboard of limiting plate (11) is provided with backup pad (37), the upper end of backup pad (37) is provided with connecting pile (33), the outside of connecting pile (33) is provided with spring (34), the upper end of backup pad (37) is provided with spacing post (36).

2. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: one side fixedly connected with supporting legs (4) of limiting plate (11), and supporting legs (4) quantity are four groups and are the symmetry and arrange, supporting legs (4) are made for non-metallic material, the upper end surface fixedly connected with annular post (6) of supplementary piece (5), and the diameter of annular post (6) is less than the diameter of supplementary piece (5), the upper end surface swing joint of annular post (6) has erection column (7), and the quantity of supplementary piece (5), annular post (6), erection column (7) is four groups and is the rectangle and arranges, stopper (8) have been inlayed in the outside of limiting plate (11), and stopper (8) quantity are four groups and are the rectangle and arrange.

3. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: the utility model discloses a protection device for a vehicle, including upper cover plate (1), the outer fixed surface of one side surface of upper cover plate (1) and the outer fixed surface of supplementary piece (5) are connected with connecting block (9) to the quantity of connecting block (9) is two sets of and is the symmetry and arranges, the outside swing joint of connecting block (9) has bolt (10), and bolt (10) quantity is two sets of and is the symmetry and arranges, the lower extreme surface swing joint of No. two protection pieces (21) has backing plate (13) No. one, the outer fixed surface of the lower extreme of a protection piece (18) is connected with backing plate (14) No. two, the upper end surface of upper fixed plate (15) runs through there is No. two bolt (16), and No. two bolt (16) quantity are four groups and are the rectangle and arrange, the upper end surface of upper fixed plate (15) runs through has through-hole (.

4. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: the outer surface of the first protection block (18) is movably connected with a first auxiliary plate (19), the first auxiliary plate (19) is of a rectangular structure, the outer side of the first auxiliary plate (19) is fixedly connected with three bolts (20), the three bolts (20) are four groups and are arranged in a rectangular shape, the outer side of the second protection block (21) is movably connected with a second auxiliary plate (22), the two auxiliary plates (22) are four groups and are arranged in parallel, the outer side of the second auxiliary plate (22) is movably connected with four bolts (23), the four bolts (23) and the three bolts (20) are the same in shape, the outer surface of the upper end of the three-way pipe mold (30) is fixedly connected with a first support rod (31), the first support rod (31) is of a cuboid structure, the upper end of the three-way pipe mold (30) is movably connected with a second support rod (32), and the cross sectional areas of the first support rod (31) and the second support rod (32) are the same.

5. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: the utility model discloses a protection block, including upper cover plate (1), one side surface of upper cover plate (1) and one side surface of limiting plate (11), be fixed connection between upper cover plate (1) and the mouth of moulding plastics (2), and mould plastics mouthful (2) and be the ring structure, one side surface of upper cover plate (1) and one side surface of limiting plate (11) all fixedly connected with solid fixed ring (3), and gu fixed ring (3) make for metal material, be fixed connection between limiting plate (11) and bottom plate (12), be swing joint between protection block (18) and upper fixed plate (15), and upper fixed plate (15) are cavity rectangle structure, be swing joint between No. two protection blocks (21) and upper fixed plate (15), and the length of No. two protection blocks (21) is greater than the length of a protection block (18).

6. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: for fixed connection between upper fixed plate (15) and the spliced pole (24) of moulding plastics, and mould plastics spliced pole (24) and be the hollow circular cylinder structure, mould plastics spliced pole (24) and mould plastics for fixed connection between pipeline (25), and mould plastics pipeline (25) and be C shape hollow structure, it makes for high temperature resistant material with spliced pole (24) of moulding plastics to mould plastics pipeline (25), the outside fixedly connected with of the pipeline (25) of moulding plastics moulds plastics head (26), and moulds plastics head (26) and be the toper structure, it arranges for the array that head (26) of moulding plastics are four groups.

7. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: connecting pipe groove (27) have been inlayed to the upper end of limiting plate (11), and connecting pipe groove (27) quantity is four groups and is the array and arranges, one side that the upper end surface of limiting plate (11) is close to connecting pipe groove (27) has inlayed tee bend pipe groove (28), and tee bend pipe groove (28) are the semicylinder structure and are the symmetry and arrange, the upper end surface swing joint of connecting pipe groove (27) has connecting pipe mould (29), and phase-match between connecting pipe mould (29) and connecting pipe groove (27), tee bend pipe groove (28) upper end surface swing joint has tee bend pipe mould (30), and phase-match between tee bend pipe mould (30) and tee bend pipe groove (28).

8. The tunnel type core pulling 50x 90-degree downcast three-way 4-cavity pipe fitting mold according to claim 1, wherein: the utility model discloses a support structure, including bottom plate (12), and support plate (37) fixed surface is connected with backup pad (37), and backup pad (37) quantity is two sets of and is the perpendicular arrangement, the upper end fixed surface of backup pad (37) is connected with connection stake (33), and connects stake (33) quantity and be four groups and be the rectangle and arrange, be swing joint between connection stake (33) and spring (34), and spring (34) are elastic construction, bottom plate (12) and backup pad (37) inside run through have auxiliary column (35), and auxiliary column (35) quantity is four groups and be the rectangle and arrange, the upper end surface of backup pad (37) runs through there is spacing post (36), and spacing post (36) quantity is four groups and is the rectangle and arranges, spacing post (36) are solid cylinder structure.

Images