Three-way pipe fitting injection mold

Abstract

The three-way pipe fitting injection mold comprises an upper mold body and a lower mold body, an upper mold cavity and a lower mold cavity are formed in the upper mold body and the lower mold body correspondingly, and a straight pipe upper mold cavity, a bent pipe upper mold cavity, a first side pipe upper mold cavity, a second side pipe upper mold cavity and an upper mounting part forming cavity are formed in the upper mold cavity; an upper mounting part forming cavity is formed in the lower cavity, an upper mounting part side pulling device is arranged on one side of the upper mounting part forming cavity, a straight pipe lower cavity, a bent pipe lower cavity, a side pipe lower cavity and a side pipe second lower cavity are formed in the lower cavity, a lower mounting part forming hole is formed in the bottom in the lower cavity, and a lower nut mounting insert is arranged in the lower mounting part forming hole; a straight pipe side drawing device, a bent pipe side drawing device and a side pipe side drawing device are respectively arranged in the lower straight pipe cavity, the lower bent pipe cavity, the lower side pipe cavity and the lower side pipe cavity; when the mold is opened, the straight pipe side drawing device is firstly opened, and the upper mounting part side drawing device, the bent pipe side drawing device and the side pipe side drawing device are drawn out at the same time, so that one-time molding of a product is realized, and the molding efficiency of the product is improved.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and in particular to a three-way pipe fitting injection mold. Background Art

[0002] A tee is a pipe joint with three openings, also known as a pipe tee or a tee pipe fitting, or a tee joint. It is used where the main pipe needs to branch out. It has one inlet and two outlets, or two inlets and one outlet. It can be T-shaped or Y-shaped, and there are also differences between equal-diameter and different-diameter pipe openings. It can be used at the confluence of three identical or different pipelines. Its main function is to change the direction of the fluid. Tees can be divided into metal and non-metal materials according to their materials. Metal tees include carbon steel, stainless steel, alloy steel, etc. Non-metal tees include PVC (polyvinyl chloride), UPVC (rigid polyvinyl chloride), PPR (random copolymer polypropylene), etc. Non-metal tees are usually injection molded. The tees used are not all standard tees. For some non-standard tees, the molds need to be adjusted, otherwise they cannot be molded.

[0003] The tee piece of the present application is a heterosexual tee piece, such as Figure 1-Figure 3 As shown, it has a straight tube part 3 and a curved part 1, two side through holes 2 on the side, and an upper fixing part 4 and a lower fixing part 5 are respectively arranged above and below, and through holes are opened on the upper fixing part 4 and the lower fixing part 5, and an upper fixing nut 6 and a lower fixing nut 7 are respectively installed in the through holes of the upper fixing part 4 and the lower fixing part 5; the structure of the workpiece is complicated, and one-time injection molding cannot be achieved by using the three-way mold in the prior art. After searching, no injection mold suitable for the shape of the workpiece of this application was found.

[0004] In summary, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The present application provides a three-way pipe fitting injection mold including an upper mold and a lower mold, wherein an upper cavity and a lower cavity are respectively provided in the upper mold and the lower mold, wherein a straight tube upper cavity, a curved tube upper cavity, a side tube first upper cavity, a side tube second upper cavity and an upper mounting part molding cavity are provided in the upper cavity, and an upper mounting part side extraction device is provided on one side of the upper mounting part molding cavity, wherein a straight tube lower cavity, a curved tube lower cavity, a side tube lower cavity and a side tube second lower cavity are provided in the lower cavity, a lower mounting part molding hole is provided at the bottom of the lower cavity, and a lower nut mounting insert is provided in the lower mounting part molding hole; a straight tube side extraction device, a curved tube side extraction device and a side tube side extraction device are respectively provided in the straight tube lower cavity, the curved tube lower cavity, the side tube lower cavity and the side tube second lower cavity.

[0006] As a preferred solution, the upper mounting part side pull-out device includes a mounting part side slider, an upper nut mounting rod is provided on the mounting part side slider, the mounting part side slider is slidably arranged in a mounting part side slide groove opened on the lower mold, an mounting part inclined guide hole is opened on the mounting part side slider, a mounting part inclined guide column matching with the mounting part is provided in the mounting part inclined guide hole, and the mounting part inclined guide column is fixed to the upper mold.

[0007] As a preferred solution, the lower nut mounting insert includes a sleeve pin, the bottom of which is connected to the bottom plate of the lower template, and the sleeve pin passes through the ejection bottom plate and the ejection plate in turn to extend to the straight tube lower cavity of the lower cavity. A sleeve is provided on the outside of the sleeve pin, and the sleeve passes through the ejection plate and extends to the lower mounting portion forming hole of the lower cavity.

[0008] As a preferred solution, the straight tube side extraction device includes a straight tube core body, which is connected to a straight tube side slider, and the straight tube side slider is slidably arranged in a straight tube side slide groove opened on the lower mold, and an auxiliary mounting platform is connected to the outer side of the straight tube side slide groove, and a power source is installed on the auxiliary mounting platform, and the output end of the power source is connected to the straight tube side slider.

[0009] As a preferred solution, the power source is one of an air cylinder, an oil cylinder, and an electric push rod.

[0010] As a preferred solution, a straight tube cooling main pipeline is arranged inside the straight tube core body, and the straight tube cooling main pipeline is connected to the straight tube cooling branch pipeline, the straight tube cooling branch pipeline is arranged in the straight tube side slider, and the straight tube cooling branch pipeline is respectively connected to the water inlet pipe and the water outlet pipe, and the water inlet pipe and the water outlet pipe are installed on the auxiliary mounting platform.

[0011] As a preferred solution, the side extraction device for the bent pipe includes a bent pipe core body, which is connected to a bent pipe side slider, and the bent pipe side slider is slidably arranged in a bent pipe side slide groove opened on the lower mold, and an inclined guide hole for the bent pipe is opened on the bent pipe side slider, and an inclined guide column for the bent pipe cooperating therewith is arranged in the inclined guide hole for the bent pipe, and the inclined guide column for the bent pipe is fixedly connected to the upper mold.

[0012] As a preferred solution, a main bend cooling pipeline is provided inside the bend core body, and the main bend cooling pipeline is connected to the bend cooling branch pipeline, and the bend cooling branch pipeline is arranged in the bend side slider, and the bend cooling branch pipeline is connected to one group of lower mold water inlet pipelines and lower mold water outlet pipelines in the lower mold through connecting pipelines.

[0013] As a preferred solution, the side tube side extraction device includes a side tube core body one and a side tube core body two, the side tube core body one and the side tube core body two are respectively fixed on a side tube side slide block, the side tube side slide block is slidably connected to a side tube side slide groove arranged on a lower mold, a side tube inclined guide hole is opened on the side tube side slide block, a side tube inclined guide hole is provided with a side tube inclined guide column matched therewith, and the side tube inclined guide column is fixedly connected to the upper mold.

[0014] As a preferred solution, the upper mold includes an upper template top plate, a flow channel plate is provided at the lower part of the upper template top plate, an upper template is provided at the lower part of the flow channel plate, an upper installation cavity is opened in the upper template, and an upper mold cavity is installed in the upper installation cavity.

[0015] As a preferred embodiment, the lower mold includes a lower template, a lower mounting cavity is opened on the lower template, a lower cavity is mounted in the lower mounting cavity, ejector rods are arranged in the straight tube lower cavity and the curved tube lower cavity of the lower cavity, the ejector rods are connected to the ejector plate, an ejector bottom plate is arranged at the lower part of the ejector plate, a lower template bottom plate is arranged at the lower part of the ejector bottom plate, and a square iron is also arranged between the lower template bottom plate and the lower template.

[0016] As a preferred solution, a lower cooling system is provided inside the lower mold plate and the lower cavity, and the lower cooling system includes a plurality of lower mold water inlet pipes and a plurality of lower mold water outlet pipes.

[0017] As a preferred solution, an upper cooling system is provided inside the upper mold plate and the upper cavity, and the upper cooling system includes a plurality of upper mold water inlet pipes and a plurality of upper mold water outlet pipes.

[0018] As a preferred solution, a pouring system is provided in the upper template top plate, the runner plate, and the upper template, and the pouring system includes a main channel arranged on the upper template top plate, the main channel is connected with a pouring trough arranged on the top of the runner plate, the pouring trough is connected with a branch channel arranged in the upper template and the upper cavity, and the branch channel extends into the straight tube upper cavity.

[0019] When the mold of the present application is closed, the side withdrawal device of the upper mounting part, the side withdrawal device of the bent tube, and the side withdrawal device of the side tube are closed first, and then the side withdrawal device of the straight tube is closed; when the mold is opened, the side withdrawal device of the straight tube is opened first, and the side withdrawal device of the upper mounting part, the side withdrawal device of the bent tube, and the side withdrawal device of the side tube are simultaneously withdrawn during mold separation, thereby realizing one-time molding of the product and thereby improving the molding efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the workpiece of the present application from an angle 1;

[0021] Figure 2 It is a structural schematic diagram of angle 2 of the workpiece of the present application;

[0022] Figure 3 It is a structural schematic diagram of angle 3 of the workpiece of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of the overall perspective of the present application;

[0024] Figure 5 This is a schematic diagram of the overall structure of the second angle of the present application;

[0025] Figure 6 This is a schematic diagram of the structure of the upper mold at angle 1;

[0026] Figure 7 This is a schematic diagram of the structure of the upper mold at angle 2;

[0027] Figure 8 It is a schematic diagram of the structure of the upper mounting cavity of the present application;

[0028] Fig. 9 It is a structural schematic diagram of the upper cavity;

[0029] Fig.10 It is a structural schematic diagram of the lower mold of the present application from an angle 1;

[0030] Fig.11 It is a structural schematic diagram of angle 2 of the lower mold of the present application;

[0031] Fig.12 It is a schematic diagram of the structure of the template under this application;

[0032] Fig.13 It is a structural schematic diagram of the straight pipe side extraction device of the present application;

[0033] Fig.14 This is a structural schematic diagram of the side drawer device of the upper mounting portion of the present application at an angle 1;

[0034] Fig.15 This is a schematic diagram of the structure of the side drawer device of the upper mounting portion of the present application at angle 2;

[0035] Fig.16 It is a schematic diagram of the structure of the side extraction device of the bent pipe in the present application cooperating with the lower cavity;

[0036] Fig.17 It is a schematic structural diagram of the curved pipe side extraction device of the present application;

[0037] Fig.18 It is a schematic diagram of the structure of the side pipe side extraction device cooperating with the lower cavity;

[0038] Fig.19 It is a structural schematic diagram of a side pipe side extraction device;

[0039] Fig. 20 is a cross-sectional view of the upper mold;

[0040] Fig.21 It is a schematic diagram of the structure of the lower cavity of the application;

[0041] Fig. 22 It is a schematic diagram of the structure of the lower nut mounting insert;

[0042] Fig.23 It is a schematic diagram of the structure of the cylinder;

[0043] Fig.24 It is a structural schematic diagram of a straight tube cooling main pipeline and a straight tube cooling branch pipeline;

[0044] Fig.25 It is a structural schematic diagram of the elbow cooling main pipeline and the elbow cooling branch pipeline;

[0045] Fig.26 It is a structural diagram of the angle 1 of the ejector pin and the upper cavity;

[0046] Fig. 27 It is a structural diagram of the angle 2 of the ejector pin and the upper cavity;

[0047] 1. Bending part; 2. Side through hole; 3. Straight pipe part; 4. Upper fixing part; 5. Lower fixing part; 6. Upper fixing nut; 7. Lower fixing nut; 8. Upper mold; 9. Lower mold; 10. Upper cavity; 11. Lower cavity; 12. Upper cavity of straight pipe; 13. Upper cavity of bent pipe; 14. Upper cavity of side pipe 1; 15. Upper cavity of side pipe 2; 16. Forming cavity of upper mounting part; 17. Side extraction device of upper mounting part; 18. Lower cavity of straight pipe; 19. Lower cavity of bent pipe; 20. Lower cavity of side pipe ; 21. Second lower cavity of side tube; 22. Forming hole of lower mounting part; 23. Side extraction device of straight tube; 24. Side extraction device of bent tube; 25. Side extraction device of side tube; 26. Side slide block of mounting part; 27. Upper nut mounting rod; 28. Side slide groove of mounting part; 29. ​​Oblique guide hole of mounting part; 30. Oblique guide column of mounting part; 31. Sleeve needle; 32. Bottom plate of lower template; 33. Ejector bottom plate; 34. Ejector plate; 35. Sleeve; 36. Sleeve needle one section; 37. Sleeve needle two sections; 38. Sleeve needle three sections Section; 39, straight tube core; 40, straight tube side slider; 41, straight tube side slide; 42, auxiliary mounting platform; 43, power source; 44, straight tube cooling main pipeline; 45, straight tube cooling branch pipeline; 46, water inlet pipe; 47, water outlet pipe; 48, bent tube core; 49, bent tube side slider; 50, bent tube side slide; 51, bent tube oblique guide hole; 52, bent tube oblique guide column; 53, bent tube cooling main pipeline; 54, bent tube cooling branch pipeline; 55, connecting pipeline; 56, lower mold water inlet pipeline; 57. Water outlet pipe of lower mould; 58. Side pipe core body one; 59. Side pipe core body two; 60. Side pipe side slider; 61. Side pipe side slide groove; 62. Side pipe oblique guide hole; 63. Side pipe oblique guide column; 64. Top plate of upper mould; 65. Runner plate; 66. Upper mould; 67. Upper mounting cavity; 68. Lower mould; 69. Lower mounting cavity; 70. Ejector rod; 71. Square iron; 72. Water inlet pipe of upper mould; 73. Water outlet pipe of upper mould; 74. Main channel; 75. Casting trough; 76. Branch channel. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1 To Attachment Fig. 27 The specific implementation of the utility model is described in detail. It should be noted that the specific implementation described here is only used to illustrate and explain the utility model, and is not used to limit the utility model.

[0049] Embodiment 1:

[0050] The present embodiment provides a three-way pipe fitting injection mold including an upper mold 8 and a lower mold 9, wherein an upper cavity 10 and a lower cavity 11 are respectively provided in the upper mold 8 and the lower mold 9, wherein a straight tube upper cavity 12, a curved tube upper cavity 13, a side tube first upper cavity 14, a side tube second upper cavity 15, and an upper mounting portion forming cavity 16 are provided in the upper cavity 10, and an upper mounting portion side draw device 17 is provided on one side of the upper mounting portion forming cavity 16, and the upper mounting portion forming cavity 16 and the upper mounting portion side draw device 17 are used to form an upper fixing portion 4 in cooperation with each other, and are used to pre-install an upper fixing nut 6 in a through hole of the upper fixing portion 4; a straight tube lower cavity 18, a curved tube lower cavity 19, a side tube lower cavity 20, and a side tube second lower cavity 21 are provided in the lower cavity 11, and a lower mounting portion forming hole 22 is provided at the bottom of the lower cavity 11, and a lower mounting portion forming hole 22 is provided in the lower mounting portion forming hole 22 A lower nut mounting insert is provided, and the lower nut mounting insert cooperates with the lower mounting portion forming hole 22 to form the lower fixing portion 5, and is used to pre-install the lower fixing nut 7 in the through hole of the formed lower fixing portion 5; the straight tube lower cavity 18, the bent tube lower cavity 19, the side tube lower cavity 20, and the side tube second lower cavity 21 are respectively provided with a straight tube side extraction device 23, a bent tube side extraction device 24, and a side tube side extraction device 25; the above-mentioned straight tube upper cavity 12, straight tube lower cavity 18, and straight tube side extraction device 23 are cooperated to form the straight tube part 3, the bent tube upper cavity 13, the bent tube lower cavity 19, and the bent tube side extraction device 24 are cooperated to form the bent part 1, the side tube first upper cavity 14 cooperates with the side tube lower cavity 20, the side tube second upper cavity 15 cooperates with the side tube second lower cavity 21, and the side tube side extraction device 25 is used to form two side through holes 2.

[0051] When the mold of this embodiment is closed, the upper mounting part side extraction device 17, the curved tube side extraction device 24, and the side tube side extraction device 25 are closed first, and the straight tube side extraction device 23 is then closed. When the mold is opened, the straight tube side extraction device 23 is opened first, and the upper mounting part side extraction device 17, the curved tube side extraction device 24, and the side tube side extraction device 25 are simultaneously extracted when the mold is separated, thereby realizing one-time molding of the product, thereby improving the molding efficiency of the product.

[0052] Embodiment 2:

[0053] This embodiment describes the upper mounting portion side extraction device 17, specifically:

[0054] The upper mounting part side extraction device 17 comprises a mounting part side slide block 26, on which an upper nut mounting rod 27 is provided, and the upper nut mounting rod 27 is used to install the upper fixing nut 6, and the mounting part side slide block 26 is slidably connected with the mounting part side slide groove 28 provided on the lower mold 9, and an mounting part inclined guide hole 29 is provided on the mounting part side slide block 26, and a mounting part inclined guide column 30 cooperating therewith is provided in the mounting part inclined guide hole 29, and the mounting part inclined guide column 30 is fixed to the upper mold 8; the upper fixing nut 6 to be installed is pre-installed on the upper nut mounting rod 27, and when the injection molding is completed and the mold is separated, the upper mold 8 drives the mounting part inclined guide column 30 to move upward, and the mounting part inclined guide column 30 drives the mounting part side slide block 26 to move outward along the mounting part side slide groove 28, and the upper nut mounting rod 27 is pulled out from the upper fixing nut 6, so as to facilitate the subsequent demolding.

[0055] Embodiment three:

[0056] This embodiment describes the installation of the lower nut insert, specifically:

[0057] The lower nut mounting insert includes a sleeve needle 31, the bottom of which is connected to the lower template bottom plate 32, and the sleeve needle 31 passes through the ejector bottom plate 33 and the ejector plate 34 in sequence and extends to the lower mounting portion forming hole 22 of the lower cavity 11. A sleeve 35 is provided on the outside of the sleeve needle 31, and the sleeve 35 passes through the ejector plate 34 and extends to the lower mounting portion forming hole 22 of the lower cavity 11, which is lower than the end face of the lower mounting portion forming hole 22. Because the diameter of the sleeve 35 is larger than the diameter of the sleeve needle 31, there is a step between the sleeve 35 and the sleeve needle 31, and the step abuts against the lower end face of the lower fixing nut 7, and the lower fixing nut 7 is installed on the outside of the sleeve needle 31.

[0058] The sleeve needle includes a sleeve needle section 1 36 , a sleeve needle section 2 37 , and a sleeve needle section 38 . The diameters of the sleeve needle section 1 36 , the sleeve needle section 2 37 , and the sleeve needle section 38 decrease successively. A lower fixing nut 7 is installed on the outer side of the sleeve needle section 38 .

[0059] Embodiment 4:

[0060] This embodiment describes the straight pipe side extraction device 23, specifically:

[0061] The straight tube side extraction device 23 includes a straight tube core body 39, which is connected to a straight tube side slider 40. The straight tube side slider 40 is slidably arranged in a straight tube side slide groove 41 provided on the lower mold 9. An auxiliary mounting platform 42 is connected to the outer side of the straight tube side slide groove 41. The auxiliary mounting platform 42 is connected to the lower mold 9 by well-known connection methods such as screws, welding, and wear-resistant blocks; a power source 43 is installed on the auxiliary mounting platform 42, and the output end of the power source 43 is connected to the straight tube side slider 40. The power source 43 adopts one of a cylinder, an oil cylinder, and an electric push rod; the power source 43 drives the straight tube side slider 40 to move along the straight tube side slide groove 41, thereby realizing mold closing and mold opening.

[0062] Preferably, in order to achieve cooling of the workpiece and improve the efficiency of workpiece forming, a straight tube cooling main pipeline 44 is arranged inside the straight tube core 39, and the straight tube cooling main pipeline 44 is connected to the straight tube cooling branch pipeline 45, and the straight tube cooling branch pipeline 45 is arranged in the straight tube side slider 40, and the straight tube cooling branch pipeline 45 is respectively connected to the water inlet pipe 46 and the water outlet pipe 47, and the water inlet pipe 46 and the water outlet pipe 47 are installed on the auxiliary mounting platform 42.

[0063] Embodiment five:

[0064] This embodiment describes the curved pipe side extraction device 24, specifically:

[0065] The bent tube side extraction device 24 includes a bent tube core body 48, which is connected to a bent tube side slider 49, which is slidably arranged in a bent tube side slide groove 50 provided on the lower mold 9, and a bent tube inclined guide hole 51 is provided on the bent tube side slider 49, and a bent tube inclined guide hole 51 is provided in the bent tube inclined guide hole 51, and a bent tube inclined guide column 52 cooperating therewith is provided in the bent tube inclined guide hole 51, and the bent tube inclined guide column 52 is fixedly connected to the upper mold 8.

[0066] In order to achieve cooling of the workpiece and improve the efficiency of workpiece forming, a bend cooling main pipeline 53 is arranged inside the bend core 48, and the bend cooling main pipeline 53 is connected to the bend cooling branch pipeline 54. The bend cooling branch pipeline 54 is arranged in the bend side slider 49, and the bend cooling branch pipeline 54 is connected to one group of lower mold water inlet pipelines 56 and lower mold water outlet pipelines 57 in the lower mold 9 through connecting pipelines 55.

[0067] When the injection molding is completed and the mold is separated, the upper mold 8 drives the curved tube inclined guide column 52 to move upward, and the curved tube inclined guide column 52 drives the curved tube side slider 49 to move outward along the curved tube side slide groove 50, so as to pull the curved tube core body 48 out of the curved part 1 and demold it subsequently.

[0068] Embodiment six:

[0069] This embodiment describes the side pipe side extraction device 25, specifically:

[0070] The side tube side extraction device 25 includes a side tube core body 1 58 and a side tube core body 2 59, and the side tube core body 1 58 and the side tube core body 2 59 are respectively fixed on a side tube side slide block 60, and the side tube side slide block 60 is slidably set in a side tube side slide groove 61 on the lower mold 9, and a side tube oblique guide hole 62 is opened on the side tube side slide block 60, and a side tube oblique guide hole 62 is provided with a side tube oblique guide column 63 cooperating therewith, and the side tube oblique guide column 63 is fixedly connected to the upper mold 8.

[0071] When the injection molding is completed and the mold is separated, the upper mold 8 drives the side tube inclined guide column 63 to move upward, and the side tube inclined guide column 63 drives the side tube side slide block 60 to move outward along the side tube side slide groove 61, and the side tube core body 1 58 and the side tube core body 2 59 are pulled out from the two side through holes 2 and demolded subsequently.

[0072] Embodiment seven:

[0073] This embodiment specifically describes the upper mold 8 and the lower mold 9, specifically:

[0074] The upper mold 8 includes an upper template top plate 64, a flow channel plate 65 is provided at the lower part of the upper template top plate 64, an upper template 66 is provided at the lower part of the flow channel plate 65, an upper mounting cavity 67 is opened in the upper template 66, an upper mold cavity 10 is installed in the upper mounting cavity 67, and the upper mold cavity 10 is connected to the upper mounting cavity 67 by screws or the like.

[0075] The lower mold 9 includes a lower template 68, a lower mounting cavity 69 is opened on the lower template 68, a lower cavity 11 is mounted in the lower mounting cavity 69, an ejector rod 70 is arranged in the straight tube lower cavity 18 and the curved tube lower cavity 19 of the lower cavity 11, the ejector rod 70 is connected to the ejector plate 34, an ejector bottom plate 33 is arranged at the lower part of the ejector plate 34, a lower template bottom plate 32 is arranged at the lower part of the ejector bottom plate 33, and a square iron 71 is further arranged between the lower template bottom plate 32 and the lower template 68; more specifically, the mounting portion inclined guide column 30, the curved tube inclined guide column 52, and the side tube inclined guide column 63 are fixed on the upper template 66.

[0076] A lower cooling system is provided inside the lower mold plate 68 and the lower mold cavity 11, and the lower cooling system includes multiple lower mold water inlet pipes 56 and multiple lower mold water outlet pipes 57; an upper cooling system is provided inside the upper mold plate 66 and the upper mold cavity 10, and the upper cooling system includes multiple upper mold water inlet pipes 72 and multiple upper mold water outlet pipes 73.

[0077] A pouring system is provided in the upper template top plate 64, the runner plate 65 and the upper template 66, and the pouring system includes a main channel 74 arranged on the upper template top plate 64, the main channel 74 is connected to a pouring trough 75 arranged on the top of the runner plate 65, the pouring trough 75 is connected to a branch channel 76 arranged in the upper template 66 and the upper cavity 10, and the branch channel 76 extends into the straight tube upper cavity 12.

[0078] When the mold of the present application is closed, the upper mounting part side extraction device 17, the curved tube side extraction device 24, and the side tube side extraction device 25 are closed first, and the straight tube side extraction device 23 is then closed. When the mold is opened, the straight tube side extraction device 23 is opened first, and the upper mounting part side extraction device 17, the curved tube side extraction device 24, and the side tube side extraction device 25 are simultaneously extracted during mold separation, and then the entire workpiece is ejected by the ejector rod 70, thereby realizing one-time molding of the product, thereby improving the molding efficiency of the product.

[0079] The above-mentioned devices, connection relationships, etc. that are not specifically described belong to the prior art and will not be described in detail in the present utility model.

[0080] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art.

[0081] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0082] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of this application will not be described separately.

[0083] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A three-way pipe fitting injection mold, comprising an upper mold (8) and a lower mold (9), wherein an upper cavity (10) and a lower cavity (11) are respectively installed in the upper mold (8) and the lower mold (9), characterized in that: The upper mold cavity (10) is provided with a straight tube upper mold cavity (12), a bent tube upper mold cavity (13), a side tube first upper mold cavity (14), a side tube second upper mold cavity (15), and an upper mounting portion molding cavity (16); an upper mounting portion side extraction device (17) is arranged on one side of the upper mounting portion molding cavity (16); the lower mold cavity (11) is provided with a straight tube lower mold cavity (18), a bent tube lower mold cavity (19), a side tube lower mold cavity (20), and a side tube second lower mold cavity (21); a lower mounting portion molding hole (22) is arranged at the bottom of the lower mold cavity (11); a lower nut mounting insert is arranged in the lower mold cavity (22); and the straight tube lower mold cavity (18), the bent tube lower mold cavity (19), the side tube lower mold cavity (20), and the side tube second lower mold cavity (21) are respectively provided with a straight tube side extraction device (23), a bent tube side extraction device (24), and a side tube side extraction device (25).

2. The three-way pipe fitting injection mold according to claim 1, characterized in that: The upper mounting part side extraction device (17) comprises a mounting part side slider (26), an upper nut mounting rod (27) is arranged on the mounting part side slider (26), the mounting part side slider (26) is slidably arranged in a mounting part side slide groove (28) provided on the lower mold (9), a mounting part oblique guide hole (29) is provided on the mounting part side slider (26), a mounting part oblique guide column (30) matched therewith is arranged in the mounting part oblique guide hole (29), and the mounting part oblique guide column (30) is fixed to the upper mold (8).

3. The three-way pipe fitting injection mold according to claim 1, characterized in that: The lower nut mounting insert comprises a sleeve needle (31), the bottom of which is connected to the lower template base plate (32), and the sleeve needle (31) sequentially passes through the ejection base plate (33) and the ejection plate (34) to extend to the lower mounting portion forming hole (22) of the lower cavity (11), and a sleeve (35) is arranged on the outer side of the sleeve needle (31), and the sleeve (35) passes through the ejection plate (34) and extends to the lower mounting portion forming hole (22) of the lower cavity (11).

4. The three-way pipe fitting injection mold according to claim 1, characterized in that: The straight tube side extraction device (23) comprises a straight tube core body (39), the straight tube core body (39) is connected to a straight tube side slider (40), the straight tube side slider (40) is slidably arranged in a straight tube side slide groove (41) provided on the lower mold (9), an auxiliary mounting platform (42) is connected to the outer side of the straight tube side slide groove (41), a power source (43) is installed on the auxiliary mounting platform (42), and an output end of the power source (43) is connected to the straight tube side slider (40).

5. The three-way pipe fitting injection mold according to claim 4, characterized in that: A straight tube cooling main pipeline (44) is arranged inside the straight tube core (39), the straight tube cooling main pipeline (44) is connected to a straight tube cooling branch pipeline (45), the straight tube cooling branch pipeline (45) is arranged in a straight tube side slider (40), the straight tube cooling branch pipeline (45) is respectively connected to a water inlet pipe (46) and a water outlet pipe (47), and the water inlet pipe (46) and the water outlet pipe (47) are installed on an auxiliary mounting platform (42).

6. The three-way pipe fitting injection mold according to claim 1, characterized in that: The pipe bending side extraction device (24) comprises a pipe bending core body (48), the pipe bending core body (48) is connected to a pipe bending side slider (49), the pipe bending side slider (49) is slidably arranged in a pipe bending side slide groove (50) provided on the lower mold (9), a pipe bending oblique guide hole (51) is provided on the pipe bending side slider (49), a pipe bending oblique guide column (52) cooperating therewith is provided in the pipe bending oblique guide hole (51), and the pipe bending oblique guide column (52) is fixedly connected to the upper mold (8).

7. The three-way pipe fitting injection mold according to claim 6, characterized in that: A main pipe cooling pipeline (53) is arranged inside the pipe bending core (48), the main pipe cooling pipeline (53) is connected to a branch pipe cooling pipeline (54), the branch pipe cooling pipeline (54) is arranged in the side slider (49) of the pipe bending, and the branch pipe cooling pipeline (54) is connected to one group of lower mold water inlet pipelines (56) and lower mold water outlet pipelines (57) in the lower mold (9) through connecting pipelines (55).

8. The three-way pipe fitting injection mold according to claim 1, characterized in that: The side tube side extraction device (25) comprises a side tube core body 1 (58) and a side tube core body 2 (59). The side tube core body 1 (58) and the side tube core body 2 (59) are respectively fixed on a side tube side slider (60). The side tube side slider (60) is slidably connected to a side tube side slide groove (61) provided on a lower mold (9). A side tube oblique guide hole (62) is provided on the side tube side slider (60). A side tube oblique guide column (63) cooperating with the side tube oblique guide hole (62) is provided in the side tube oblique guide hole (62). The side tube oblique guide column (63) is fixedly connected to the upper mold (8).

9. The three-way pipe fitting injection mold according to claim 1, characterized in that: The upper mold (8) comprises an upper mold plate top plate (64), a flow channel plate (65) is provided at the lower portion of the upper mold plate top plate (64), an upper mold plate (66) is provided at the lower portion of the flow channel plate (65), an upper mounting cavity (67) is provided in the upper mold plate (66), and an upper mold cavity (10) is installed in the upper mounting cavity (67).

10. The three-way pipe fitting injection mold according to claim 3, characterized in that: The lower mold (9) comprises a lower template (68), a lower mounting cavity (69) is formed on the lower template (68), a lower cavity (11) is mounted in the lower mounting cavity (69), an ejector rod (70) is arranged in the straight tube lower cavity (18) and the curved tube lower cavity (19) of the lower cavity (11), the ejector rod (70) is connected to an ejector plate (34), an ejector bottom plate (33) is arranged at the lower part of the ejector plate (34), a lower template bottom plate (32) is arranged at the lower part of the ejector bottom plate (33), and a square iron (71) is arranged between the lower template bottom plate (32) and the lower template (68).

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