Water pressure type three-way pipe forming die

Abstract

The utility model discloses a hydraulic pressure type three-way pipe forming die, belongs to the technical field of three-way pipe machining equipment, and solves the problems that after a sealing plate of an existing device is replaced, the specification of a water injection end is not changed, the inner walls of three-way pipes of different specifications cannot be supported, and the inner walls of the three-way pipes are prone to being uneven. A lower mold frame is fixedly installed on the top face of the bottom plate, an upper mold frame is arranged above the lower mold frame, hydraulic rods are symmetrically arranged on the two sides of the lower mold frame, the diameter of a sealing column is the same as the inner diameter of a lower mold and an upper mold after the lower mold and the upper mold are assembled, and the diameter of a supporting column is the same as the inner diameter of a machined three-way pipe. The diameter of the sealing column is set to be the same as the inner diameter after the lower mold and the upper mold are assembled, the diameter of the supporting column is set to be the same as the inner diameter of the machined three-way pipe, the inner wall of the three-way pipe can be supported through the supporting column, and then the situation that the inner wall of the three-way pipe is uneven is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way pipe processing equipment, in particular to a hydraulic three-way pipe forming die. Background Art

[0002] The tee pipe can be produced by extrusion process. Liquid is injected into the tube blank with the same diameter as the tee by using a special hydraulic press. The two horizontal side cylinders of the hydraulic press move synchronously and center to extrude the tube blank. Under the dual action of the side cylinders and the liquid pressure inside the side cylinders, the tube blank flows along the inner cavity of the mold and expands the branch pipe.

[0003] In the application with patent application number CN202321058508.8, a hydraulic three-way pipe forming mold is disclosed, including an operating table, a lower mold frame is fixedly installed on the operating table, a lower mold is fixedly installed on the lower mold frame, an extrusion extension portion is provided below the lower mold, an upper mold frame is provided above the lower mold frame, the upper mold frame is fixedly connected to the hydraulic device, an upper mold is fixedly installed on the upper mold frame, the upper mold cooperates with the lower mold, vertical plates are provided on both sides of the operating table, a hydraulic ejector is fixedly installed through the vertical plates, the center line of the hydraulic ejector is aligned with the center line of the circle where the lower mold is located, a water injection end is provided at the front end of the movable end of the hydraulic ejector, a sealing plate is detachably installed on the water injection end, and the diameter of the sealing plate is consistent with the inner diameter of the upper mold and the lower mold after the combination;

[0004] Although the hydraulic three-way pipe forming mold can realize the processing of tees of different specifications and models by replacing molds of different specifications and corresponding sealing plates, the specifications of the water injection end of the hydraulic three-way pipe forming mold remain unchanged after the sealing plate is replaced, and the inner wall of the three-way pipe of different specifications cannot be supported, which easily leads to uneven inner wall of the three-way pipe.

[0005] Therefore, we proposed a hydraulic three-way pipe forming die. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a hydraulic three-way pipe forming mold, which solves the problem that after the sealing plate of the existing device is replaced, the specifications of the water injection end remain unchanged, the inner walls of three-way pipes of different specifications cannot be supported, and the inner wall of the three-way pipe is easily uneven.

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: a hydraulic three-way pipe forming mold, including a bottom plate, a lower mold frame is fixedly installed on the top surface of the bottom plate, an upper mold frame is arranged above the lower mold frame, a lower mold and an upper mold are respectively assembled on the lower mold frame and the upper mold frame by bolts, an extrusion extension is arranged at the bottom of the lower mold, hydraulic rods are symmetrically arranged on both sides of the lower mold frame, the output end of the hydraulic rod is fixedly connected to the water injection end, the front end of the water injection end is provided with a water outlet, and the output end of the hydraulic rod is fixedly installed with a A water inlet pipe connected to a water hole, a sealing column is provided at the end of the water injection end away from the hydraulic rod, a support column is fixedly installed in the middle of the sealing column away from the hydraulic rod, a drainage hole is provided in the middle of the end face of the support column, a threaded hole connected to the drainage hole is provided at the end of the sealing column close to the water injection end, a water outlet hole is provided on the side of the outer surface of the water injection end away from the hydraulic rod, the water injection end is threadedly sleeved inside the threaded hole, the diameter of the sealing column is the same as the inner diameter of the lower mold and the upper mold after the mold is closed, and the diameter of the support column is the same as the inner diameter of the processed tee pipe.

[0008] Preferably, symmetrically distributed guide grooves are provided on both sides of the top surface of the lower mold frame, and the cross-section of the guide groove is a triangular equilateral triangle, with one corner of the equilateral triangle pointing vertically downward.

[0009] Preferably, guide strips opposite to the guide grooves are fixedly installed on both sides of the bottom surface of the upper mold frame, the guide strips are in the shape of triangular prisms, and the cross-sectional shape of the guide strips is the same as the cross-sectional shape of the guide grooves, and the guide strips are movably mounted inside the guide grooves, wherein the bottom end of the guide strips is guided by the inclined surface of the guide grooves to avoid deviation when the upper mold frame and the lower mold frame are put together.

[0010] Preferably, the corners of the guide groove and the guide strip are rounded, so as to reduce the wear when the guide strip contacts the guide groove.

[0011] Preferably, a U-shaped plate is fixedly installed on the top surface of the base plate, a hydraulic cylinder is fixedly installed in the middle of the top surface of the U-shaped plate, and the output end of the hydraulic cylinder passes through the top surface of the U-shaped plate and is fixedly installed on the top surface of the upper mold frame, wherein the upper mold frame is driven downward by the hydraulic cylinder to complete the mold closing work.

[0012] The utility model provides a hydraulic three-way pipe forming die, which has the following beneficial effects:

[0013] 1. The hydraulic tee forming mold sets the diameter of the sealing column to be the same as the inner diameter of the lower mold and the upper mold after the mold is closed, and sets the diameter of the support column to be the same as the inner diameter of the tee after processing. Before pressurization, the two ends of the tube blank are abutted, and the support column is sleeved at the two ends inside the tube blank. After the tube blank is extended into the tee, the two ends of the tee are sleeved on the outer surface of the support column. The inner wall of the tee can be supported by the support column, thereby avoiding the uneven inner wall of the tee. The problem that after the sealing plate of the existing device is replaced, the specifications of the water injection end remain unchanged, and the inner walls of tees of different specifications cannot be supported, which easily leads to the uneven inner wall of the tee.

[0014] 2. The hydraulic three-way pipe forming mold guides the bottom end of the guide strip through the inclined surface of the guide groove, so as to avoid deviation when the upper mold frame and the lower mold frame are combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the lower mold frame and the split structure of the lower mold frame of the utility model;

[0018] Figure 4 This is a schematic diagram of the split structure of the hydraulic rod and the sealing column of the utility model;

[0019] Figure 5 This is a schematic diagram of the sealing column structure of the utility model.

[0020] In the figure: 1. bottom plate; 2. lower mold frame; 21. lower mold; 22. extrusion extension; 23. guide groove; 3. upper mold frame; 31. hydraulic cylinder; 32. upper mold; 33. guide strip; 4. U-shaped plate; 5. hydraulic rod; 51. water injection end; 52. water outlet; 53. water inlet pipe; 6. sealing column; 61. support column; 62. threaded hole; 63. drainage hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] like Figure 1-5 As shown: it includes a base plate 1, a lower mold frame 2 is fixedly installed on the top surface of the base plate 1, an upper mold frame 3 is arranged above the lower mold frame 2, a lower mold 21 and an upper mold 32 are respectively assembled on the lower mold frame 2 and the upper mold frame 3 by bolts, an extrusion extension part 22 is arranged at the bottom of the lower mold 21, hydraulic rods 5 are symmetrically arranged on both sides of the lower mold frame 2, the output end of the hydraulic rod 5 is fixedly connected to a water injection end 51, a water outlet hole 52 is opened at the front end of the water injection end 51, a water inlet pipe 53 connected to the water outlet hole 52 is fixedly installed at the output end of the hydraulic rod 5, a sealing column 6 is arranged at the end of the water injection end 51 away from the hydraulic rod 5, a support column 61 is fixedly installed in the middle of the sealing column 6 away from the end of the hydraulic rod 5, and a drainage hole 63 is opened in the middle of the end face of the support column 61.

[0024] A threaded hole 62 connected to the drainage hole 63 is formed at one end of the sealing column 6 close to the water injection end 51, and a water outlet hole 52 is formed on the side of the outer surface of the water injection end 51 away from the hydraulic rod 5. The water injection end 51 is threadedly mounted inside the threaded hole 62, and the diameter of the sealing column 6 is the same as the inner diameter of the lower mold 21 and the upper mold 32 after the mold is closed.

[0025] The diameter of the support column 61 is the same as the inner diameter of the processed tee pipe. By setting the diameter of the sealing column 6 to be the same as the inner diameter after the lower mold 21 and the upper mold 32 are combined, and setting the diameter of the support column 61 to be the same as the inner diameter of the processed tee pipe, 6 is abutted against the two ends of the tube blank before pressurization, and the support column 61 is sleeved on the two ends inside the tube blank. After the tube blank is extended into the tee pipe, the two ends of the tee pipe are sleeved on the outer surface of the support column 61. The inner wall of the tee pipe can be supported by the support column 61, thereby avoiding the occurrence of uneven inner wall of the tee pipe.

[0026] Example 2

[0027] like Figure 1-3 As shown: symmetrically distributed guide grooves 23 are provided on both sides of the top surface of the lower mold frame 2, the cross-section of the guide groove 23 is a triangular equilateral triangle, and one corner of the equilateral triangle is vertically downward, and guide strips 33 opposite to the guide groove 23 are fixedly installed on both sides of the bottom surface of the upper mold frame 3, the guide strips 33 are triangular prism-shaped, and the cross-sectional shape of the guide strips 33 is the same as the cross-sectional shape of the guide groove 23, the guide strips 33 are movably mounted inside the guide groove 23, the corners of the guide groove 23 and the guide strips 33 are rounded, and the bottom end of the guide strips 33 is guided by the inclined surface of the guide groove 23, so as to avoid deviation when the upper mold frame 3 and the lower mold frame 2 are put together.

[0028] Example 3

[0029] like Figure 1-2As shown: a U-shaped plate 4 is fixedly installed on the top surface of the bottom plate 1, a hydraulic cylinder 31 is fixedly installed in the middle of the top surface of the U-shaped plate 4, the output end of the hydraulic cylinder 31 passes through the top surface of the U-shaped plate 4 and is fixedly installed on the top surface of the upper mold frame 3, and the upper mold frame 3 is driven to move downward by the hydraulic cylinder 31, thereby completing the mold closing work.

[0030] The working principle and use process of the utility model: When using the hydraulic three-way pipe forming mold, the tube blank is placed in the lower mold 21, and then the hydraulic cylinder 31 is started to push the upper mold frame 3 downward until the lower mold 21 and the upper mold 32 complete the mold closing, and then the hydraulic rod 5 is started to push the water injection end 51 and the sealing column 6 to move toward the two ends of the tube blank, and then the sealing column 6 is sleeved inside the two ends of the lower mold 21 and the upper mold 32 and contacts with the two ends of the tube blank, and the support column 61 is sleeved inside the tube blank, and then high-pressure water is injected into the water injection end 51 through the water inlet pipe 53, and the hydraulic rod 5 is kept moving continuously, and then the water enters the interior of the tube blank through the water outlet hole 52 and the drainage hole 63. Under the action of high pressure, the tube blank is extended, and then extends to the interior of the extrusion extension part 22, and then a three-way pipe is formed, and the two ends of the three-way pipe of the support column 61 are sleeved on the outside of the support column 61.

Claims

1. A hydraulic three-way pipe forming mold, comprising a bottom plate (1), a lower mold frame (2) is fixedly installed on the top surface of the bottom plate (1), an upper mold frame (3) is arranged above the lower mold frame (2), a lower mold (21) and an upper mold (32) are respectively assembled on the lower mold frame (2) and the upper mold frame (3) by bolts, an extrusion extension portion (22) is arranged at the bottom of the lower mold (21), hydraulic rods (5) are symmetrically arranged on both sides of the lower mold frame (2), the output end of the hydraulic rod (5) is fixedly connected to a water injection end (51), a water outlet hole (52) is opened at the front end of the water injection end (51), and a water inlet pipe (53) connected to the water outlet hole (52) is fixedly installed on the output end of the hydraulic rod (5); Features: A sealing column (6) is arranged at one end of the water injection end (51) away from the hydraulic rod (5); a support column (61) is fixedly installed at the middle of the end of the sealing column (6) away from the hydraulic rod (5); a drainage hole (63) is provided in the middle of the end surface of the support column (61); a threaded hole (62) connected to the drainage hole (63) is provided at one end of the sealing column (6) close to the water injection end (51); a water outlet hole (52) is provided on the side of the outer surface of the water injection end (51) away from the hydraulic rod (5); the water injection end (51) is threadedly sleeved inside the threaded hole (62); the diameter of the sealing column (6) is the same as the inner diameter of the lower mold (21) and the upper mold (32) after mold closing; and the diameter of the support column (61) is the same as the inner diameter of the processed three-way pipe.

2. The hydraulic three-way pipe forming mold according to claim 1, characterized in that: The top surface of the lower mold frame (2) is provided with symmetrically distributed guide grooves (23) on both sides, and the cross section of the guide groove (23) is a triangular equilateral triangle, with one corner of the equilateral triangle pointing vertically downward.

3. A hydraulic three-way pipe forming mold according to claim 2, characterized in that: Guide strips (33) are fixedly mounted on both sides of the bottom surface of the upper mold frame (3) and are located opposite to the guide groove (23). The guide strips (33) are in the shape of a triangular prism, and the cross-sectional shape of the guide strips (33) is the same as the cross-sectional shape of the guide groove (23). The guide strips (33) are movably mounted inside the guide groove (23).

4. The hydraulic three-way pipe forming mold according to claim 3, characterized in that: The corners of the guide groove (23) and the guide strip (33) are rounded.

5. The hydraulic three-way pipe forming mold according to claim 1, characterized in that: A U-shaped plate (4) is fixedly mounted on the top surface of the bottom plate (1), a hydraulic cylinder (31) is fixedly mounted in the middle of the top surface of the U-shaped plate (4), and an output end of the hydraulic cylinder (31) passes through the top surface of the U-shaped plate (4) and is fixedly mounted on the top surface of the upper mold frame (3).

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