Central hole positioning device for pipe fitting machining and punching

Abstract

The utility model relates to the field of pipe fitting processing, and discloses a central hole positioning device for pipe fitting processing and punching, which comprises a tapping machine, a positioning pin is fixedly mounted on the inner wall of one side of the tapping machine, a pipe fitting is arranged on the outer side of the positioning pin, a supporting chamber is arranged in the positioning pin, and a supporting mechanism is arranged in the supporting chamber; a positioning base is fixedly installed on one side of the tapping machine, and a limiting mechanism is arranged on one side of the positioning base. The device has the following advantages and effects that the pipe fitting is externally clamped, so that the pipe fitting can be stably mounted on the device, the pipe fitting can be machined without being manually held, manpower resources are greatly saved, the labor cost is saved, meanwhile, the pipe fitting is internally clamped and supported, the pipe fitting is more stable during trepanning, and the machining efficiency is improved. The influence of a gap between the positioning pin and the pipe fitting on trepanning is reduced, and the practicability and the stability of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting processing technology, and in particular to a device for positioning the center hole of punching in pipe fitting processing. Background Technology

[0002] Pipe fittings are a collective term for components in a piping system that serve functions such as connection, control, direction change, flow diversion, sealing, and support. Main products include seamless steel pipes of various diameters made of special steel, stainless steel, and carbon steel; low, medium, and high-pressure boiler tubes; oil drilling pipes; various tees, crosses, valves, reducers, and other elbows; various stainless steel flanges and forged flanges; various pipe supports, instruments, oil well blowout preventers, and other pipe accessories; and various polyethylene and polypropylene pipes, totaling 16 major categories, over 370 varieties, and more than 3500 specifications. Manufacturing processes primarily employ hot-rolled straight seam welding, spiral double-sided submerged arc welding, and forging... We offer a wide range of processing methods, including forging, pressing, medium-frequency induction molding, cold forming, and hot extrusion. Our pipes can be processed up to 2020 mm in diameter. Our products are widely used in municipal, petrochemical, West-East Gas Pipeline, shipbuilding, and nuclear power engineering projects. Our annual designed processing capacity is 25 million tons. Currently, some pipe fittings require internal bore machining, but existing equipment cannot accurately position the bore, leading to positional shifts after drilling. Furthermore, the stability of existing fixing devices is low during drilling, causing the pipe fitting to wobble within the device, resulting in inaccurate drilling.

[0003] In related technologies, the limiting mechanism used in the punching of existing pipe fittings mostly adopts the external limiting method to limit the pipe fitting. There is a gap between the positioning pin and the pipe fitting. Sometimes the pipe fitting is prone to shaking during punching, which can easily affect the drilling accuracy of the pipe fitting.

[0004] Therefore, it is necessary to design a pipe fitting punching center hole positioning device that takes into account both internal and external limits, ensures the stability of the pipe fitting during drilling, and facilitates the rotation of the pipe fitting. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for the center hole of the punch in pipe processing, which has the effect of both internal and external limiting and stability of the pipe during drilling.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a positioning device for punching center holes in pipe fittings, comprising a hole punching machine, a positioning pin fixedly installed on one side of the inner wall of the hole punching machine, a pipe fitting provided on the outer side of the positioning pin, a support chamber provided inside the positioning pin, and a support mechanism provided in the support chamber; a positioning base fixedly installed on one side of the hole punching machine, and a limiting mechanism provided on one side of the positioning base.

[0007] A further feature of this invention is that a hydraulic press is slidably mounted on the top of the hole-opening machine, and a punching head is provided at the bottom of the hydraulic press.

[0008] By adopting the above technical solution, it is convenient to perform hole drilling on the pipe fittings.

[0009] A further feature of this invention is that two electric rollers are fixedly installed on the inner side of the hole-opening machine.

[0010] By adopting the above technical solution, two electric rollers can assist in flipping the pipe and adjusting its opening position.

[0011] A further feature of this invention is that the support mechanism includes a support column and multiple support metal strips. One end of the support column is fixedly installed on the inner wall of one side of the support chamber, and the other end of the support column is provided with multiple support grooves. Support metal strips are slidably installed on the inner side of each of the multiple support grooves, and support metal blocks are fixedly installed on one end of each of the multiple support metal strips.

[0012] By adopting the above technical solution, multiple supporting metal blocks can effectively support and clamp the inside of the pipe fitting, making the pipe fitting more stable.

[0013] A further feature of this invention is that: a linkage gear is rotatably mounted on one end of the support column which has multiple support grooves; multiple linkage holes are opened on one side of the linkage gear; and sliding columns are fixedly mounted on one side of each of the multiple support metal strips, with the multiple sliding columns slidably mounted in their respective linkage holes.

[0014] By adopting the above technical solution, it is convenient for the linkage gear to drive multiple sliding columns to move when it rotates.

[0015] A further feature of this invention is that a motor slot is provided inside the support column, a support servo motor is fixedly installed on one inner wall of the motor slot, a linkage shaft is fixedly installed through one side of the linkage gear, and the output shaft of the support servo motor is fixedly connected to the linkage shaft.

[0016] By adopting the above technical solution, it is easy to drive the linkage shaft to rotate by supporting the servo motor.

[0017] A further feature of this invention is that the limiting mechanism includes multiple limiting racks and multiple limiting clips. Multiple limiting grooves are provided on one side of the positioning base. Limiting racks are slidably installed on the inner side of each of the multiple limiting grooves, and limiting clips are fixedly installed on one side of each of the multiple limiting racks.

[0018] By adopting the above technical solution, multiple limit clamps can assist the corresponding limit racks in clamping the pipe fittings.

[0019] A further feature of this invention is that the hole-opening machine is provided with an arc-shaped groove, a flat threaded disc is rotatably mounted on the inner side of the arc-shaped groove, multiple limiting racks are adapted to the same flat threaded disc, and a driven bevel gear is fixedly mounted on one side of the flat threaded disc.

[0020] By adopting the above technical solution, the planar threaded disc can drive multiple limiting racks to clamp the pipe fitting.

[0021] A further feature of this invention is that the hole-opening machine is provided with an arc-shaped groove, a flat threaded disc is rotatably mounted on the inner side of the arc-shaped groove, multiple limiting racks are adapted to the same flat threaded disc, and a driven bevel gear is fixedly mounted on one side of the flat threaded disc.

[0022] By adopting the above technical solution, it is easy for the driven bevel gear to drive the flat threaded disc to rotate.

[0023] A further feature of this invention is that a motor chamber is provided on the inner side of each of the two gear bases, and a synchronous motor is fixedly installed on one inner wall of each of the two motor chambers. The output shafts of the two synchronous motors are respectively fixedly connected to the corresponding driving bevel gears.

[0024] By adopting the above technical solution, two synchronous motors can drive the corresponding driving bevel gears to rotate, thereby driving the same driven bevel gear to rotate.

[0025] This application includes at least one of the following beneficial technical effects:

[0026] 1. This application utilizes an external limiting mechanism consisting of a flat threaded disc and multiple limiting racks to externally clamp the pipe fitting, enabling the pipe fitting to be stably installed on the equipment without the need for manual handling of the pipe fitting during processing, thus greatly saving human resources and labor costs.

[0027] 2. This application utilizes an internal limiting mechanism composed of a linkage gear and multiple supporting metal strips to clamp and support the inside of the pipe fitting, making the pipe fitting more stable when drilling, reducing the impact of the gap between the positioning pin and the pipe fitting on the drilling process, and increasing the practicality and stability of the equipment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1This is a three-dimensional structural diagram of a positioning device for punching center holes in pipe fittings proposed in this utility model;

[0030] Figure 2 This is a three-dimensional cross-sectional view of a positioning device for punching center holes in pipe fittings proposed in this utility model;

[0031] Figure 3 This is a three-dimensional structural disassembly diagram of a support mechanism for a positioning device for punching center holes in pipe fittings, as proposed in this utility model.

[0032] Figure 4 This is a three-dimensional structural disassembly diagram of a limiting mechanism for a positioning device for punching center holes in pipe fittings, as proposed in this utility model.

[0033] Figure 5 This is a three-dimensional cross-sectional view of a limiting mechanism for a center hole positioning device for punching pipe fittings, as proposed in this utility model.

[0034] In the diagram, 1. Hole punch; 2. Hydraulic press; 3. Punching head; 4. Positioning pin; 5. Pipe fitting; 6. Electric roller; 7. Support column; 8. Support servo motor; 9. Support groove; 10. Support metal strip; 11. Sliding column; 12. Support metal block; 13. Linkage gear; 14. Linkage shaft; 15. Linkage hole; 16. Positioning base; 17. Limit rack; 18. Limit clamp; 19. Flat threaded disc; 20. Driven bevel gear; 21. Driving bevel gear; 22. Gear base; 23. Synchronous motor. Detailed Implementation

[0035] Reference Figure 1-5 A positioning device for punching center holes in pipe fittings includes a punching machine 1, a positioning pin 4 fixedly installed on one inner wall of the punching machine 1, a pipe fitting 5 provided on the outer side of the positioning pin 4, a support chamber opened inside the positioning pin 4, and a support mechanism provided in the support chamber; a positioning base 16 fixedly installed on one side of the punching machine 1, and a limiting mechanism provided on one side of the positioning base 16.

[0036] In this embodiment, a hydraulic press 2 is slidably mounted on the top of the punching machine 1, and a punching head 3 is provided at the bottom of the hydraulic press 2.

[0037] In this embodiment, two electric rollers 6 are fixedly installed on the inner side of the hole punching machine 1.

[0038] In this embodiment, the support mechanism includes a support column 7 and multiple support metal strips 10. One end of the support column 7 is fixedly installed on the inner wall of one side of the support chamber, and the other end of the support column 7 is provided with multiple support grooves 9. Support metal strips 10 are slidably installed on the inner side of each of the multiple support grooves 9, and support metal blocks 12 are fixedly installed on one end of each of the multiple support metal strips 10.

[0039] In this embodiment, a linkage gear 13 is rotatably installed at one end of the support column 7 which has multiple support grooves 9. Multiple linkage holes 15 are opened on one side of the linkage gear 13. Sliding columns 11 are fixedly installed on one side of each of the multiple support metal strips 10. The multiple sliding columns 11 are slidably installed in the corresponding linkage holes 15.

[0040] In this embodiment, a motor slot is provided inside the support column 7, and a support servo motor 8 is fixedly installed on one side of the inner wall of the motor slot. A linkage shaft 14 is fixedly installed through one side of the linkage gear 13, and the output shaft of the support servo motor 8 is fixedly connected to the linkage shaft 14.

[0041] In this embodiment, the limiting mechanism includes multiple limiting racks 17 and multiple limiting clips 18. Multiple limiting grooves are provided on one side of the positioning base 16. Limiting racks 17 are slidably installed on the inner side of each of the multiple limiting grooves. Limiting clips 18 are fixedly installed on one side of each of the multiple limiting racks 17.

[0042] In this embodiment, the punching machine 1 is provided with an arc-shaped groove, and a flat threaded disk 19 is rotatably installed on the inner side of the arc-shaped groove. Multiple limiting racks 17 are adapted to the same flat threaded disk 19, and a driven bevel gear 20 is fixedly installed on one side of the flat threaded disk 19.

[0043] In this embodiment, two gear bases 22 are fixedly installed on the top of the hole punching machine 1. A driving bevel gear 21 is rotatably installed on one side of each of the two gear bases 22. Both driving bevel gears 21 mesh with the same driven bevel gear 20.

[0044] In this embodiment, motor chambers are provided on the inner sides of both gear bases 22, and synchronous motors 23 are fixedly installed on one inner wall of each of the two motor chambers. The output shafts of the two synchronous motors 23 are respectively fixedly connected to the corresponding active bevel gears 21.

[0045] Working principle: When drilling a hole in pipe fitting 5, the operator aligns pipe fitting 5 with positioning pin 4 and then places it onto positioning pin 4. The equipment is then started via the control panel, activating two electric rollers 6, which rotate pipe fitting 5 to adjust its drilling position. Next, the support servo motor 8 is activated, driving the linkage shaft 14 to rotate. The linkage shaft 14 rotates, driving the linkage gear 13. The linkage gear 13 has multiple linkage holes 15. The rotation of these linkage holes 15 causes corresponding sliding columns 11 to move around the linkage shaft 14 as the center. The movement of these sliding columns 11 causes corresponding support metal strips 10 to move outwards, and the movement of these support metal strips 10 causes corresponding... The supporting metal block 12 moves to clamp and support the pipe 5 from the inside. Then, two synchronous motors 23 are started. The two synchronous motors 23 drive the corresponding active bevel gears 21 to rotate. The rotation of the two active bevel gears 21 drives the same driven bevel gear 20 to rotate. The rotation of the driven bevel gear 20 drives the flat threaded disc 19 to rotate. The rotation of the flat threaded disc 19 drives multiple limiting racks 17 to move. The movement of the multiple limiting racks 17 drives the corresponding limiting clamps 18 to move closer to each other to clamp the pipe 5 and complete the external limiting. Then, the staff starts the hydraulic press 2 through the control panel. The hydraulic press 2 drives the punch head 3 at the bottom to move. The punch head 3 and the slot on the positioning pin 4 cooperate to open the pipe 5.

[0046] The technological advancements of this invention compared to existing technologies are as follows: it allows for external clamping of the pipe fitting 5, enabling stable installation on the equipment without the need for manual handling, thus greatly saving manpower and labor costs. Simultaneously, it provides internal clamping and support for the pipe fitting 5, making it more stable during drilling and reducing the impact of the gap between the positioning pin 4 and the pipe fitting 5 on drilling, thereby increasing the practicality and stability of the equipment.

[0047] The foregoing has provided a detailed description of a center hole positioning device for punching pipe fittings, as provided in this application. Specific embodiments have been used to illustrate the principles and implementation methods of this application. The descriptions of these embodiments are merely illustrative and are intended to help understand the method and core concepts of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A device for positioning the center hole of a punched pipe fitting, characterized in that, Includes a hole punching machine (1), a positioning pin (4) is fixedly installed on one inner wall of the hole punching machine (1), a pipe fitting (5) is provided on the outside of the positioning pin (4), a support chamber is provided inside the positioning pin (4), and a support mechanism is provided in the support chamber; A positioning base (16) is fixedly installed on one side of the hole punching machine (1), and a limiting mechanism is provided on one side of the positioning base (16).

2. The device for positioning the center hole of a punch in pipe fittings according to claim 1, characterized in that: A hydraulic press (2) is slidably mounted on the top of the hole punching machine (1), and a punching head (3) is provided at the bottom of the hydraulic press (2).

3. The device for positioning the center hole of a punch in pipe fittings according to claim 1, characterized in that: Two electric rollers (6) are fixedly installed on the inner side of the hole punch (1).

4. The device for positioning the center hole of a punch in pipe fitting processing according to claim 1, characterized in that: The support mechanism includes a support column (7) and multiple support metal strips (10). One end of the support column (7) is fixedly installed on the inner wall of one side of the support chamber. The other end of the support column (7) is provided with multiple support grooves (9). Support metal strips (10) are slidably installed on the inner side of each of the multiple support grooves (9). Support metal blocks (12) are fixedly installed on one end of each of the multiple support metal strips (10).

5. A device for positioning the center hole of a punched pipe fitting as described in claim 4, characterized in that: The support column (7) has multiple support grooves (9) and a linkage gear (13) is rotatably installed at one end. The linkage gear (13) has multiple linkage holes (15) on one side. Each of the multiple support metal strips (10) has a sliding column (11) fixedly installed on one side. The multiple sliding columns (11) are slidably installed in the corresponding linkage holes (15).

6. A device for positioning the center hole of a punched pipe fitting as described in claim 5, characterized in that: The support column (7) has a motor slot inside, and a support servo motor (8) is fixedly installed on one side of the inner wall of the motor slot. A linkage shaft (14) is fixedly installed through one side of the linkage gear (13), and the output shaft of the support servo motor (8) is fixedly connected to the linkage shaft (14).

7. A device for positioning the center hole of a punch in pipe fittings according to claim 1, characterized in that: The limiting mechanism includes multiple limiting racks (17) and multiple limiting clips (18). Multiple limiting grooves are provided on one side of the positioning base (16). The limiting racks (17) are slidably installed on the inner side of the multiple limiting grooves. The limiting clips (18) are fixedly installed on one side of the multiple limiting racks (17).

8. A device for positioning the center hole of a punched pipe fitting as described in claim 7, characterized in that: The hole punch (1) is provided with an arc groove, and a flat threaded disc (19) is rotatably installed on the inner side of the arc groove. Multiple limiting racks (17) are adapted to the same flat threaded disc (19). A driven bevel gear (20) is fixedly installed on one side of the flat threaded disc (19).

9. A device for positioning the center hole of a punch in pipe fittings according to claim 8, characterized in that: The top of the hole punch (1) is fixedly installed with two gear bases (22), and a driving bevel gear (21) is rotatably installed on one side of each gear base (22). Both driving bevel gears (21) mesh with the same driven bevel gear (20).

10. A device for positioning the center hole of a punched pipe fitting as described in claim 9, characterized in that: The inner sides of the two gear bases (22) are provided with motor chambers, and synchronous motors (23) are fixedly installed on one side of the inner wall of the two motor chambers. The output shafts of the two synchronous motors (23) are fixedly connected to the corresponding active bevel gears (21).

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