Integrated forming device for elbow three-way pipe and forming process of integrated forming device

Abstract

The invention discloses an integral forming device of an elbow three-way pipe and a forming process of the elbow three-way pipe, and relates to the technical field of pipe fitting die-casting technology.The forming device comprises a lower die, an upper die, a hydraulic lifting device, a cold pressing device, a rotary cutting device and an automatic clamping device.A two-way pipe fitting is placed in the lower die, the hydraulic lifting device presses downwards, and the two-way pipe fitting is formed; the upper die and the lower die are attached, a cold pressing device drives the two ends of the two-way pipe fitting to be blocked, a water pump connected with the cold pressing device works, liquid is fed into the two-way pipe fitting, and the cold pressing device extrudes the two-way die under high pressure; the size of the two-way pipe fitting is changed, the pressure of liquid in the pipe fitting is increased, pipe blank metal flows into a supporting hole of the upper die, a three-way pipe fitting is formed, the rotary cutting device cuts the three-way pipe fitting, after cutting is completed, the hydraulic lifting device ascends, and the automatic clamping device clamps the three-way pipe fitting to be separated from the die. The mold has the effects of cutting and automatic demolding.

Description

Technical Field

[0001] This invention relates to the field of pipe die-casting technology, specifically to an integrated molding device and molding process for elbow tees. Background Technology

[0002] Tee fittings, as core components in piping systems for fluid diversion or merging, are widely used in water supply and drainage, petrochemical, and HVAC industries. With increasing demands from modern industry for the sealing and structural strength of piping systems (e.g., municipal water supply and drainage pipelines need to withstand working pressures above 1.6 MPa, and chemical pipelines need corrosion resistance and fatigue resistance), traditional tee fitting processing techniques have gradually revealed their performance limitations. Cold pressing, however, has become the mainstream processing method for medium and high-pressure tee fittings due to its advantages such as "no high-temperature heating, excellent workpiece mechanical properties (cold work hardening can increase material strength by 20%-30%), and high forming precision." Cold-extruded tee fittings, with their excellent mechanical properties, corrosion resistance, and lower weight and cost, are widely used in piping systems for transporting various fluids.

[0003] After cold pressing, the tee fitting will fit tightly into the mold cavity due to plastic deformation. Most existing equipment does not have a dedicated ejection structure, requiring operators to manually tap the outside of the mold with a copper hammer to force the workpiece out of the cavity. This operation method not only easily leads to workpiece deformation, but also consumes a lot of manpower. At the same time, after manually removing the part, a new blank must be manually placed into the cavity, resulting in low production efficiency. In addition, there is a high safety hazard if the moving parts of the equipment are accidentally touched during manual operation.

[0004] Traditional forming equipment only has the function of stamping pipes and lacks the ability to cut the stamped part of elbow tee pipes. Therefore, after stamping, other cutting equipment is needed for processing, which increases the processing steps and also increases the equipment's footprint. Summary of the Invention

[0005] The purpose of this invention is to provide an integral forming device and forming process for elbow tee pipes, so as to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integral forming device for elbow tee pipes, the forming device comprising a base, a housing, a hydraulic lifting device, a rotary cutting device, and an automatic clamping device, wherein the housing is disposed on the base, the hydraulic lifting device is disposed on the housing, the rotary cutting device is disposed inside the hydraulic lifting device, and the automatic clamping device is disposed on the base; the hydraulic lifting device presses down to fix the pipe fitting, the rotary cutting device cuts the tee pipe fitting, and the automatic clamping device clamps the tee pipe fitting away from the mold.

[0007] A lower mold is provided on the base, a support block is provided on the base, a horizontal hydraulic press is provided on the support block, and a horizontal pressure rod is provided at one end of the horizontal hydraulic press near the lower mold. The two-way pipe fittings are placed on the lower mold, and the horizontal pressure rod extends outward to seal both ends of the two-way pipe fittings. The support block provides support.

[0008] The base is equipped with a clamping base, which in turn is equipped with a rotary motor. A rotating seat is rotatably mounted on the rotary motor, and a lifting motor is mounted on the rotating seat. A lifting rod is mounted at the output end of the lifting motor, and a connecting block is mounted on the lifting rod. A clamping arm is mounted on one side of the connecting block, and a gripper is mounted at one end of the clamping arm. The lifting motor drives the lifting rod to extend upwards, and the rotary motor drives the rotating seat to rotate. Before cold pressing, the gripper clamps the two-way pipe fitting. The rotary motor drives the rotating seat to rotate the gripper above the lower mold. The lifting rod retracts, and the gripper places the two-way pipe fitting on the lower mold. The rotary motor then drives the rotating seat to rotate, resetting the gripper.

[0009] The transverse pressure bar has an injection channel inside, one end of which is connected to a water pump. The transverse pressure bar seals both ends of the two-way pipe fitting. When the water pump connected to the injection channel operates, it sends liquid into the two-way pipe fitting.

[0010] The hydraulic lifting device includes a lifting hydraulic cylinder, a lifting plate, and a lifting housing. The lifting hydraulic cylinder is installed through the top of the housing, and the lifting housing is also installed through the top of the housing. A lifting hydraulic rod is provided at the output end of the lifting hydraulic cylinder, and a fixing block is provided at one end of the lifting hydraulic rod. The fixing block is connected to the lifting plate. An upper mold is provided below the lifting plate, and an upper mold support hole is provided through the center of the upper mold. The lifting hydraulic rod extends outward, and the upper mold presses down. The lower mold and the upper mold fit together to fix and limit the pipe fitting. The fixing block serves to fix and connect.

[0011] A fixed plate is provided on the lifting plate, a cutting shell is provided on the fixed plate, a lead screw is provided on the fixed plate, a moving block is threadedly connected to the lead screw, the lead screw passes through the top of the cutting shell, and a lead screw motor is provided at one end of the lead screw near the lifting shell, the lead screw motor drives the moving block to move up and down on the lead screw.

[0012] A servo motor is installed at the center of the moving block. A rotating cutting column is installed below the servo motor, penetrating the center of the lifting plate, the center of the fixed plate, and the center of the upper mold. A cutting head is installed at one end of the rotating cutting column near the base. The servo motor drives the rotating cutting column to rotate, and the cutting head follows the rotation of the rotating cutting column to cut the tee fitting. After cutting, the rotating motor drives the rotating seat to rotate, rotating the gripper above the tee fitting. The lifting rod retracts, lowering the gripper to the tee fitting, and the gripper holds the tee fitting, removing it from the lower mold.

[0013] An integral forming process for an elbow tee pipe, using an integral forming device for an elbow tee pipe, the forming process includes the following steps: S1. Loading materials; S2. The two pipe fittings are fixed and limited by a hydraulic lifting device; S3. Seal both ends of the two pipe fittings using a horizontal hydraulic rod; S4. Inject liquid into the inside of the two-way pipe fittings through the injection channel; S5. The two pipes are squeezed by the horizontal hydraulic rod; S6. The volume of the two-way fitting decreases while the liquid pressure inside the fitting increases. S7. The billet metal flows upward into the mold support hole to form a tee fitting; S8. Rotary cutting device for cutting tee fittings; S9. Feeding.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. After cold pressing, the automatic clamping device can accurately extend into the mold cavity and stably grasp the workpiece through the grippers adapted to the structure of the tee fitting, eliminating the need for operators to strike the mold and shortening the part removal time; it significantly reduces process intervals, greatly shortens the single-piece production cycle, and significantly improves the continuous operation capability of the production line, effectively breaking through the efficiency bottleneck caused by manual operation; it saves human resources and reduces labor costs; the automatic clamping device can build a physical isolation safety barrier, fundamentally reducing the probability of mechanical injury accidents, while reducing the labor intensity caused by repetitive manual operations, improving the operating environment, and meeting the requirements of safe production.

[0015] 2. Significantly simplifies the processing flow and improves overall production efficiency. The rotary cutting device can be seamlessly integrated with the cold pressing process. When the tube is stamped and still in the mold positioning state, the device uses a special cutting tool driven by a servo motor to precisely rotate and cut around the part of the tube that needs to be processed, completing the removal of excess material and end flattening in one go, eliminating the need for subsequent secondary processing steps and shortening the processing cycle of a single piece.

[0016] 3. Reduce equipment footprint and optimize production space layout. The rotary cutting device can adopt a modular design, eliminating the need for additional independent operating areas. Functional upgrades can be achieved by simply expanding the existing equipment with minimal space, thus reducing the footprint of the entire processing system. This makes it more suitable for the compact layout requirements of small and medium-sized workshops or production lines, effectively improving the utilization rate of workshop space. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the present invention; Figure 2 For the present invention Figure 1 A magnified view of a portion of region A in the middle; Figure 3 For the present invention Figure 1 A magnified view of a portion of region B in the middle; Figure 4 This is an overall sectional view of the present invention; Figure 5 This is a cross-sectional view of the cold pressing device of the present invention; Figure 6 This is a structural diagram of the automatic clamping device of the present invention; Figure 7 This is a structural diagram of the hydraulic lifting device of the present invention; Figure 8 This is a structural diagram of the rotary cutting device of the present invention.

[0018] In the diagram: 1. Base; 2. Housing; 3. Support block; 4. Horizontal hydraulic press; 5. Horizontal pressure bar; 6. Injection channel; 7. Lower mold; 8. Upper mold; 9. Upper mold support hole; 10. Lifting plate; 11. Fixing plate; 12. Fixing block; 13. Lead screw; 14. Lifting hydraulic cylinder; 15. Lifting hydraulic rod; 16. Cutting shell; 17. Lead screw motor; 18. Servo motor; 19. Moving block; 20. Rotating cutting column; 21. Cutting head; 22. Lifting shell; 23. Clamping base; 24. Rotary motor; 25. Rotary seat; 26. Lifting motor; 27. Lifting rod; 28. Connecting block; 29. ​​Clamping arm; 30. Gripper. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example: Figures 1-8As shown, the present invention provides a technical solution: an integral forming device for elbow tee pipes. The forming device includes a base 1, a housing 2, a hydraulic lifting device, a rotary cutting device, and an automatic clamping device. The housing 2 is mounted on the base 1, the hydraulic lifting device is mounted on the housing 2, the rotary cutting device is mounted inside the hydraulic lifting device, and the automatic clamping device is mounted on the base 1. The hydraulic lifting device presses down to fix the pipe fitting, the rotary cutting device cuts the tee pipe fitting, and the automatic clamping device clamps the tee pipe fitting away from the mold.

[0021] A clamping base 23 is provided on the base 1, a rotary motor 24 is provided on the clamping base 23, a rotating seat 25 is rotatably provided on the rotary motor 24, a lifting motor 26 is provided on the rotating seat 25, a lifting rod 27 is provided at the output end of the lifting motor 26, a connecting block 28 is provided on the lifting rod 27, a clamping arm 29 is provided on one side of the connecting block 28, and a gripper 30 is provided at one end of the clamping arm 29. The lifting motor 26 drives the lifting rod 27 to extend upward, and the rotary motor 24 drives the rotating seat 25 to rotate. Before cold pressing, the gripper 30 clamps the two-way pipe fitting. The rotary motor 24 drives the rotating seat 25 to rotate, rotating the gripper 30 above the lower mold 7. The lifting rod 27 retracts, and the gripper 30 places the two-way pipe fitting on the lower mold 7. The rotary motor 24 drives the rotating seat 25 to rotate, resetting the gripper 30.

[0022] The hydraulic lifting device includes a lifting hydraulic cylinder 14, a lifting plate 10, and a lifting housing 22. The lifting hydraulic cylinder 14 is installed through the top of the housing 2, and the lifting housing 22 is also installed through the top of the housing 2. A lifting hydraulic rod 15 is provided at the output end of the lifting hydraulic cylinder 14. A fixing block 12 is provided at one end of the lifting hydraulic rod 15. The fixing block 12 is connected to the lifting plate 10. An upper mold 8 is provided below the lifting plate 10. An upper mold support hole 9 is provided through the center of the upper mold 8. The lifting hydraulic rod 15 extends outward, and the upper mold 8 presses down. The lower mold 7 and the upper mold 8 fit together to fix and limit the pipe fitting. The fixing block 12 serves to fix and connect.

[0023] A lower mold 7 is provided on the base 1, a support block 3 is provided on the base 1, a horizontal hydraulic press 4 is provided on the support block 3, and a horizontal pressure bar 5 is provided at one end of the horizontal hydraulic press 4 near the lower mold 7. Two pipe fittings are placed on the lower mold 7, and the horizontal pressure bar 5 extends outward to seal both ends of the two pipe fittings. The support block 3 plays a supporting role.

[0024] The transverse pressure rod 5 has an injection channel 6 inside. One end of the injection channel 6 is connected to a water pump. The transverse pressure rod 5 seals both ends of the two-way pipe fitting. The water pump connected to the injection channel 6 works to send liquid into the two-way pipe fitting.

[0025] A fixed plate 11 is provided on the lifting plate 10, a cutting housing 16 is provided on the fixed plate 11, a lead screw 13 is provided on the fixed plate 11, a moving block 19 is threadedly connected to the lead screw 13, the lead screw 13 passes through the top of the cutting housing 16, a lead screw motor 17 is provided at one end of the lead screw 13 near the lifting housing 22, and the lead screw motor 17 drives the moving block 19 to move up and down on the lead screw 13.

[0026] A servo motor 18 is installed at the center of the moving block 19. A rotating cutting column 20 is installed below the servo motor 18. The rotating cutting column 20 passes through the center of the lifting plate 10, the center of the fixed plate 11, and the center of the upper mold 8. A cutting head 21 is installed at one end of the rotating cutting column 20 near the base 1. The servo motor 18 drives the rotating cutting column 20 to rotate, and the cutting head 21 follows the rotation of the rotating cutting column 20 to cut the tee fitting. After cutting, the lifting motor 26 drives the lifting rod 27 to extend upward, and the rotating motor 24 drives the rotating seat 25 to rotate, rotating the gripper 30 above the tee fitting. The lifting rod 27 retracts, lowering the gripper 30 to the tee fitting. The gripper 30 holds the tee fitting and removes it from the lower mold 7.

[0027] An integral forming process for an elbow tee pipe, using an integral forming device for an elbow tee pipe, the forming process includes the following steps: S1. Loading materials; S2. The two pipe fittings are fixed and limited by a hydraulic lifting device; S3. Seal both ends of the two pipe fittings using a horizontal hydraulic rod; S4. Inject liquid into the inside of the two-way pipe fittings through the injection channel; S5. The two pipes are squeezed by the horizontal hydraulic rod; S6. The volume of the two-way fitting decreases while the liquid pressure inside the fitting increases. S7. The billet metal flows upward into the mold support hole to form a tee fitting; S8. Rotary cutting device for cutting tee fittings; S9. Feeding.

[0028] Working principle of the invention: Before cold pressing, the gripper 30 holds the two-way pipe fitting. The rotary motor 24 drives the rotary seat 25 to rotate, rotating the gripper 30 above the lower mold 7. The lifting rod 27 retracts, and the gripper 30 places the two-way pipe fitting on the lower mold 7. The rotary motor 24 drives the rotary seat 25 to rotate, resetting the gripper 30.

[0029] The lifting hydraulic rod 15 extends outward, the upper mold 8 presses down, the lower mold 7 and the upper mold 8 fit together to fix and limit the pipe fitting, the horizontal pressure rod 5 extends outward to seal both ends of the two-way pipe fitting, the water pump connected to the injection channel 6 works to send liquid into the two-way pipe fitting.

[0030] The transverse pressure bar 5 extends outward to squeeze the two-way mold. Under high pressure, the volume of the two-way pipe fittings decreases and the liquid pressure inside the pipe fittings increases. The billet metal flows upward into the mold support hole 9 to form a three-way pipe fitting.

[0031] The lead screw motor 17 drives the moving block 19 to move up and down on the lead screw 13, and the rotating cutting column 20 moves down accordingly. The servo motor 18 drives the rotating cutting column 20 to rotate, and the cutting head 21 follows the rotating cutting column 20 to rotate, cutting the tee fitting.

[0032] After cutting, the lifting motor 26 drives the lifting rod 27 to extend upward, and the rotary motor 24 drives the rotating seat 25 to rotate, rotating the gripper 30 above the tee fitting. The lifting rod 27 retracts, lowering the gripper 30 to the tee fitting. The gripper 30 holds the tee fitting and removes it from the lower mold 7.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An integral forming device for an elbow tee pipe, characterized in that: The forming device includes a base (1), a housing (2), a hydraulic lifting device, a rotary cutting device, and an automatic clamping device. The housing (2) is mounted on the base (1), the hydraulic lifting device is mounted on the housing (2), the rotary cutting device is mounted inside the hydraulic lifting device, and the automatic clamping device is mounted on the base (1).

2. The integral forming device for an elbow tee pipe according to claim 1, characterized in that: The base (1) is provided with a lower mold (7), the base (1) is provided with a support block (3), the support block (3) is provided with a horizontal hydraulic press (4), and the horizontal hydraulic press (4) is provided with a horizontal pressure bar (5) at one end near the lower mold (7).

3. The integral forming device for an elbow tee pipe according to claim 1, characterized in that: A clamping base (23) is provided on the base (1), a rotary motor (24) is provided on the clamping base (23), a rotating seat (25) is rotatably provided on the rotary motor (24), a lifting motor (26) is provided on the rotating seat (25), a lifting rod (27) is provided at the output end of the lifting motor (26), a connecting block (28) is provided on the lifting rod (27), a clamping arm (29) is provided on one side of the connecting block (28), and a gripper (30) is provided at one end of the clamping arm (29).

4. The integral forming device for an elbow tee pipe according to claim 2, characterized in that: The transverse pressure bar (5) has an injection channel (6) inside, and one end of the injection channel (6) is connected to a water pump.

5. The integral forming device for an elbow tee pipe according to claim 1, characterized in that: The hydraulic lifting device includes a lifting hydraulic cylinder (14), a lifting plate (10), and a lifting housing (22). The lifting hydraulic cylinder (14) is installed through the top of the housing (2), and the lifting housing (22) is installed through the top of the housing (2). The output end of the lifting hydraulic cylinder (14) is provided with a lifting hydraulic rod (15). One end of the lifting hydraulic rod (15) is provided with a fixing block (12). The fixing block (12) is connected to the lifting plate (10). An upper mold (8) is provided below the lifting plate (10), and an upper mold support hole (9) is provided through the center of the upper mold (8).

6. The integral forming device for an elbow tee pipe according to claim 5, characterized in that: A fixed plate (11) is provided on the lifting plate (10), a cutting shell (16) is provided on the fixed plate (11), a lead screw (13) is provided on the fixed plate (11), a moving block (19) is threaded on the lead screw (13), the lead screw (13) passes through the top of the cutting shell (16), and a lead screw motor (17) is provided at the end of the lead screw (13) near the lifting shell (22).

7. The integral forming device for an elbow tee pipe according to claim 6, characterized in that: A servo motor (18) is installed through the center of the moving block (19). A rotating cutting column (20) is installed below the servo motor (18). The rotating cutting column (20) penetrates the center of the lifting plate (10), the center of the fixed plate (11), and the center of the upper mold (8). A cutting head (21) is installed at one end of the rotating cutting column (20) near the base (1).

8. An integral molding process for an elbow tee pipe, characterized in that: Using the integral forming apparatus for an elbow tee pipe according to any one of claims 1-7, the forming process includes the following steps: S1. Loading materials; S2. The two pipe fittings are fixed and limited by a hydraulic lifting device; S3. Seal both ends of the two pipe fittings using a horizontal hydraulic rod; S4. Inject liquid into the inside of the two-way pipe fittings through the injection channel; S5. The two pipes are squeezed by the horizontal hydraulic rod; S6. The volume of the two-way fitting decreases while the liquid pressure inside the fitting increases. S7. The billet metal flows upward into the mold support hole to form a tee fitting; S8. Rotary cutting device for cutting tee fittings; S9. Feeding.

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