Machining device for malleable cast iron pipe

Abstract

The invention discloses a malleable cast iron pipe machining device which comprises a support and is characterized in that a fixed module is arranged on the support, a movable module is detachably and fixedly arranged on the fixed module, four sliding blocks moving in the radial direction are evenly distributed on the support in the radial direction, and a tapping mechanism is arranged at the inner end of each sliding block; the tapping mechanism comprises a shell, a rotating rod is rotationally arranged in the shell, a tapping assembly is arranged at the inner end of the rotating rod, a second bevel gear is arranged at the outer end of the rotating rod, and the second bevel gear is arranged at the outer end of the second bevel gear. Four transmission gears are arranged below the support, an upper fixing disc is arranged at the lower end of the rotating shaft, a lower fixing disc is arranged on the transmission gears, and a sliding disc is arranged between the upper fixing disc and the lower fixing disc in a sliding mode. According to the machining device for the malleable cast iron pipe, thread machining of a plurality of pipe openings is completed through one-time loading, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to a processing device for a malleable cast iron pipe. Background Art

[0002] Malleable cast iron pipe is a malleable cast iron, commonly known as malleable iron or horse iron. The production process is: first cast into white cast iron parts, and then forge annealed (forge annealing decomposes cementite into flocculent graphite) to obtain forgeable cast iron parts. In the process of processing malleable cast iron pipe, the inner surface of each pipe mouth of the malleable cast iron pipe needs to be processed into a threaded shape. Malleable cast iron pipe usually has multiple pipe mouths, and the common ones are two, three or four pipe mouths. In the process of thread forming at each pipe mouth, if manual loading and processing is used, it needs to be disassembled and assembled many times, and the processing efficiency is slow. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a processing device for malleable cast iron pipes in view of the current status of the prior art, so as to complete the thread processing of multiple pipe ends in one loading and improve the processing efficiency.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a processing device for a malleable cast iron pipe comprises a support, characterized in that: a mounting hole is opened at the center of the support, a mounting seat is arranged in the mounting hole, a fixed module is arranged on the mounting seat, a movable module is detachably fixedly arranged on the fixed module, and a cavity adapted to the malleable cast iron pipe is formed on the movable module and the fixed module; four radially movable sliders are evenly distributed radially on the support, a tapping mechanism is arranged at the inner end of each slider, a rotatable rotating ring is sleeved on the outer wall of the support, a lug is formed on the swivel at a position corresponding to the outer end of each slider, an inclined hole is formed on the lug, a convex column limitedly located in the inclined hole is arranged on the outer end of the slider, a screw motor is arranged on the support, a screw is arranged on the screw motor, and the screw and the fixed module are arranged on the support. The nut cooperates with, and the outer end of the lead screw is connected with one of the lugs; the slider is provided with a rotating shaft for rotation, and the support is provided with a radial hole for the rotating shaft to pass through. The upper end of the rotating shaft is provided with a first bevel gear, and the tapping mechanism includes a shell fixedly connected to the slider, a rotating rod is rotatably arranged in the shell, and a tapping assembly for processing the pipe mouth thread of the malleable cast iron pipe is provided at the inner end of the rotating rod, and a second bevel gear meshing with the first bevel gear is provided at the outer end of the rotating rod. A driving motor, a driving gear and four transmission gears are provided below the support, and the driving gear is connected to the driving motor for transmission, and the driving gear is meshed with the four transmission gears. An upper fixed plate is provided at the lower end of the rotating shaft, and a lower fixed plate is provided on the transmission gear. A sliding plate is slidably arranged between the upper fixed plate and the lower fixed plate.

[0005] As an improvement, an upper slide groove is formed on the lower side surface of the upper fixed plate, a lower slide groove is formed on the upper side surface of the lower fixed plate, an upper slide bar slidably set in the upper slide groove is formed on the upper side surface of the sliding plate, and a lower slide bar slidably set in the lower slide groove is formed on the lower side surface of the sliding plate, and the upper slide bar and the lower slide bar are arranged alternately.

[0006] As a further improvement, the projections of the upper sliding bar and the lower sliding bar on the sliding plate are perpendicular to each other.

[0007] As a further improvement, the tapping assembly includes a chuck connected to the inner end of the rotating rod, and a tapping head is detachably fixedly arranged on the chuck.

[0008] A further improvement is that the tapping assembly includes at least two tapping plates, a chamber opening to the inner end is formed in the shell, a dividing block is formed in the chamber, the dividing block divides the chamber into an inner cavity and an outer cavity, an annular channel is formed on the end face of the inner end of the shell on the cavity wall of the inner cavity, a number of mounting blocks matching the tapping plates are rotatably arranged in the annular channel, each tapping plate is mounted on a corresponding mounting block, a pull rod is rotatably arranged on the dividing block, the pull rod and the rotating rod are coaxially arranged and connected by splines for transmission, a spring is sleeved on the rotating rod in the outer cavity, a sealing disk slidably arranged in the outer cavity is formed on the outer end of the pull rod, two ends of the spring abut between the sealing disk and the inner wall of the outer cavity, a connecting disk is formed at the inner end of the pull rod, a connecting rod is hinged between the connecting disk and each mounting block, an air inlet and an air outlet connected to the outer cavity are provided on the shell, the air inlet and the air outlet are connected to an external pneumatic device.

[0009] As a further improvement, the fixed module is rotatably arranged on a mounting seat, and a graduated disc is formed on the mounting seat.

[0010] As a further improvement, a height adjustment mechanism is provided between the fixed module and the mounting seat.

[0011] As a further improvement, the movable module is provided with a bolt hole, the fixed module is provided with a threaded groove, and the movable module and the fixed module are fixedly connected by bolts.

[0012] As a further improvement, an electromagnetic disk is provided on the back of the moving module, and the moving module and the fixed module are adsorbed by electromagnetism.

[0013] Further improvement, the mounting seat is provided with an inclined top block, the inclined top block is provided with an inclined sliding block, an adjusting screw is mounted on the mounting seat, the adjusting screw is connected to the inclined top block, a height adjustment handle is provided at the outer end of the adjusting screw, a turbine is provided in the inclined sliding block, a worm meshing with the turbine is provided on the outside of the inclined sliding block, an angle adjustment handle is connected to the outer end of the worm, and the bottom of the fixed module is fixedly connected to the turbine.

[0014] Compared with the prior art, the advantages of the present invention are as follows: in the process of processing the thread of the pipe mouth of the malleable cast iron pipe, first, the malleable cast iron pipe to be processed is placed on the fixed module, and then the movable module is fixedly installed on the fixed module, the malleable cast iron pipe is fixed at the center of the support, and each pipe mouth of the malleable cast iron pipe is respectively opposite to the corresponding tapping mechanism, and then, the driving motor drives each transmission gear to rotate, and the transmission gear drives the corresponding rotating shaft to rotate through the sliding plate transmission, and the rotating shaft drives the rotating rod to rotate through the first bevel gear and the second bevel gear, and the rotating rod drives the tapping assembly to rotate. At the same time, the lead screw motor drives the lead screw to rotate, and the lead screw drives the rotating ring to rotate. The rotating ring drives the slider to move radially through the cooperation of the inclined hole and the convex column. In the present invention, The upper fixed plate connected to the shaft and the lower fixed plate connected to the transmission gear are respectively slidably connected to the sliding plate, so that when the rotating shaft follows the rotation of the transmission gear, the sliding block can also move radially along the support, so that the tapping assembly rotates and simultaneously approaches the corresponding pipe opening of the malleable cast iron pipe, so as to realize thread processing on the pipe opening of the malleable cast iron pipe. After the processing is completed, the screw motor and the drive motor rotate in the opposite direction, the tapping assembly exits and resets, the moving module is disassembled, and the processed malleable cast iron pipe is taken out. The processing device for the malleable cast iron pipe of the present invention can simultaneously perform thread processing on each pipe opening of the two-way, three-way or four-way malleable cast iron pipe, so that the thread processing of all pipe openings can be completed in one loading, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 1 is a schematic diagram of the overall layout structure of a processing device for a malleable cast iron pipe according to an embodiment of the present invention;

[0016] Figure 2 1 is a bottom bottom schematic diagram of a processing device for a malleable cast iron pipe according to an embodiment of the present invention;

[0017] Figure 3 1 is a schematic structural diagram of the side portion of a processing device for a malleable cast iron pipe according to an embodiment of the present invention;

[0018] Figure 4 is a schematic diagram of the motion structure of the moving module in an embodiment of the present invention;

[0019] Figure 5 It is a transmission structure schematic diagram of the tapping mechanism in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, the processing device of the malleable cast iron pipe in this embodiment includes a support 1, a fixed module 3, a movable module 31, a swivel 2, a screw motor 7, a screw 71, a drive motor, a drive gear 8, a transmission gear 81, a slider 5, an upper fixed plate 84, a lower fixed plate 82, a sliding plate 83 and a tapping assembly.

[0022] Among them, Figure 1 and 4 As shown, a mounting hole 11 is provided at the center of the support 1, a mounting seat 33 is provided in the mounting hole 11, a fixed module 3 is provided on the mounting seat 33, a movable module 31 is detachably fixedly provided on the fixed module 3, and a cavity adapted to the malleable cast iron tube 4 is formed on the movable module 31 and the fixed module 3.

[0023] like Figure 1 and 2 As shown, four radially movable sliders 5 are evenly distributed radially on the support 1, and a tapping mechanism is provided at the inner end of each slider 5. A rotatable swivel 2 is sleeved on the outer wall of the support 1, and a lug 21 is formed on the swivel 2 at a position corresponding to the outer end of each slider 5, and an inclined hole 22 is formed on the lug 21. A boss 51 limitedly located in the inclined hole 22 is provided at the outer end of the slider 5, and a screw motor 7 is provided on the support 1. A screw 71 is provided on the screw motor 7, and the screw 71 cooperates with a nut provided on the support 1, and the outer end of the screw 71 is connected to one of the lugs 21.

[0024] Please continue reading Figure 2 , 3 and 5, a rotating shaft 85 is rotatably provided on the slider 5, a radial hole 12 is provided on the support 1 for the rotating shaft 85 to pass through, a first bevel gear 86 is provided at the upper end of the rotating shaft 85, and the tapping mechanism includes a shell 9 fixedly connected to the slider 5, a rotating rod 88 is rotatably provided in the shell 9, and a tapping assembly for processing the pipe thread of the malleable cast iron pipe 4 is provided at the inner end of the rotating rod 88, and a second bevel gear 87 meshing with the first bevel gear 86 is provided at the outer end of the rotating rod 8, and a driving motor, a driving gear 8 and four transmission gears 81 are provided below the support 1, the driving gear 8 is transmission-connected to the driving motor, and the driving gear 8 is meshed with the four transmission gears 81, an upper fixed disk 84 is provided at the lower end of the rotating shaft 85, a lower fixed disk 82 is provided on the transmission gear 81, and a sliding disk 83 is slidably provided between the upper fixed disk 84 and the lower fixed disk 82.

[0025] Further, the sliding transmission structure of the upper fixed plate 84, the lower fixed plate 82 and the sliding plate 83 is that an upper slide groove is formed on the lower side of the upper fixed plate 84, a lower slide groove is formed on the upper side of the lower fixed plate 82, an upper slide bar slidably disposed in the upper slide groove is formed on the upper side of the sliding plate 83, and a lower slide bar slidably disposed in the lower slide groove is formed on the lower side of the sliding plate 83, and the upper slide bars and the lower slide bars are arranged alternately. Preferably, the projections of the upper slide bar and the lower slide bar on the sliding plate are perpendicular to each other.

[0026] Furthermore, in an embodiment of the present invention, two tapping assembly structures are designed. In the first type, the tapping assembly includes a chuck connected to the inner end of the rotating rod 88, and a tapping head is detachably fixed on the chuck. In this way, the thread tapping requirements of pipes of different calibers can be achieved by replacing different tapping heads.

[0027] The second type, such as Figure 5 As shown, the tapping assembly includes at least two tapping pieces 98, a chamber opening to the inner end is formed in the shell 9, a dividing block 91 is formed in the chamber, and the dividing block 91 divides the chamber into an inner chamber 92 and an outer chamber 93. An annular channel 99 is formed on the end surface of the inner end of the shell 9 on the wall of the inner chamber 92, and a number of mounting blocks 97 matching the tapping piece 98 are rotatably arranged in the annular channel 99, each tapping piece 99 is mounted on the corresponding mounting block 97, and a pull rod 95 is rotatably arranged on the dividing block 91, and the pull rod 95 and the rotating rod 88 are synchronously arranged. The shaft is arranged and connected by a spline for transmission. A spring 94 is sleeved in the outer cavity 93 on the rotating rod 88. A sealing disk 951 is formed on the outer end of the pull rod 95 and is slidably arranged in the outer cavity 93. The two ends of the spring 94 are against the sealing disk 951 and the inner wall of the outer cavity 93. A connecting disk 952 is formed on the inner end of the pull rod 95. A connecting rod 96 is hinged between the connecting disk 952 and each mounting block 97. An air inlet and an air outlet connected to the outer cavity 93 are arranged on the housing 9. The air inlet and the air outlet are connected to an external pneumatic device. The traditional tapping head is designed as a split structure. During the tapping process, each tapping piece 98 is synchronously tightened outward on the inner wall of the pipe mouth, so that the tapping head does not need to be replaced. At the same time, in the embodiment of the present invention, while the rotating rod 88 drives the pull rod 95 to rotate, gas is introduced into or sucked out of the outer cavity through the pneumatic device to realize the back and forth movement of the pull rod 95. The pull rod 95 drives the radial movement of each mounting block 97 through each connecting rod 96, thereby realizing the radial movement of the tapping piece 98. At the same time, the rotating rod 88 drives the pull rod 05 to rotate, thereby realizing thread tapping processing.

[0028] In addition, in order to meet the processing requirements of malleable cast iron pipes 4 of different specifications, the fixed module 3 can be designed as a rotating structure. Specifically, the fixed module 3 is rotatably arranged on the mounting seat 33, and a graduated disc is formed on the mounting seat 33. Alternatively, the fixed module 3 can also be designed as a height-adjustable structure, such as a height adjustment mechanism is provided between the fixed module 3 and the mounting seat 3. To this end, in the embodiment of the present invention, a structure is designed in which the fixed module 3 can be both height-adjustable and rotatable. Specifically, Figure 4As shown, an inclined top block 34 is provided in the mounting seat 33, an inclined sliding block 35 is provided on the inclined top block 34, an adjusting screw 36 is mounted on the mounting seat 33, the adjusting screw 36 is connected to the inclined top block 34, a height adjustment handle 37 is provided at the outer end of the adjusting screw 36, a turbine is provided in the inclined sliding block 35, a worm 38 meshing with the turbine is provided outside the inclined sliding block 35, an angle adjustment handle is connected to the outer end of the worm 38, and the bottom of the fixed module 3 is fixedly connected to the turbine.

[0029] In addition, in order to facilitate the fixed installation of the moving module 31 on the fixed module 3, a bolt hole may be provided on the moving module 31, and a threaded groove may be provided on the fixed module 3, and the moving module 31 and the fixed module 3 are fixedly connected by bolts 32. Alternatively, in order to improve the fixed installation efficiency of the moving module 31, an electromagnetic disk may be provided on the back of the moving module 31, and the moving module 31 and the fixed module 3 are adsorbed by electromagnetics.

[0030] In summary, during the thread processing of the pipe mouth of the malleable cast iron pipe 4, first, the malleable cast iron pipe 4 to be processed is placed on the fixed module 3, and then the movable module 31 is fixedly installed on the fixed module 3, the malleable cast iron pipe 4 is fixed at the center of the support 1, and each pipe mouth of the malleable cast iron pipe 4 is respectively opposite to the corresponding tapping mechanism, and then, the driving motor drives each transmission gear 81 to rotate, and the transmission gear 81 is transmitted through the sliding plate 83, thereby driving the corresponding rotating shaft 85 to rotate, and the rotating shaft 85 drives the rotating rod 88 to rotate through the first bevel gear 86 and the second bevel gear 87, and the rotating rod 88 drives the tapping assembly to rotate. At the same time, the screw motor 7 drives the screw 71 to rotate, and the screw 71 drives the rotating ring 2 to rotate. The rotating ring 2 drives the slider 5 to move radially through the cooperation of the inclined hole 21 and the boss 51. In the present invention, The upper fixed plate 84 connected to the rotating shaft 85 and the lower fixed plate 82 connected to the transmission gear 81 are respectively slidably connected to the sliding plate 83, so that when the rotating shaft 85 follows the rotation of the transmission gear 81, the sliding block 5 can also move radially along the support 1, so that the tapping assembly rotates and simultaneously approaches the corresponding pipe opening of the malleable cast iron pipe 4, so as to realize thread processing on the pipe opening of the malleable cast iron pipe 4. After the processing is completed, the screw motor 7 and the drive motor rotate in the opposite direction, the tapping assembly exits and resets, the moving module 31 is disassembled, and the processed malleable cast iron pipe 4 is taken out. The processing device for the malleable cast iron pipe 4 of the present invention can simultaneously perform thread processing on each pipe opening of the two-way, three-way or four-way malleable cast iron pipe 4, so that the thread processing of all pipe openings can be completed in one loading, thereby improving the processing efficiency.

Claims

1. A processing device for a malleable cast iron pipe, comprising a support (1), characterized in that: The support (1) is provided with a mounting hole (11) at its center, a mounting seat (33) is provided in the mounting hole (11), a fixed module (3) is provided on the mounting seat (33), a movable module (31) is detachably fixedly provided on the fixed module (3), and a cavity matching the malleable cast iron tube (4) is formed on the movable module (31) and the fixed module (3); four radially movable sliders (5) are evenly distributed on the support (1), the inner end of each slider (5) is provided with a tapping mechanism, and a threading mechanism is provided on the outer wall of the support (1). A rotating ring (2) is sleeved and arranged to rotate. A lug (21) is formed on the rotating ring (2) at a position corresponding to the outer end of each slider (5). An inclined hole (22) is formed on the lug (21). A lug (51) is provided at the outer end of the slider (5) and is limitedly located in the inclined hole (22). A screw motor (7) is provided on the support (1). A screw motor (7) is provided on the screw motor (7). The screw (71) cooperates with a nut provided on the support (1). The outer end of the screw (71) is connected to one of the lugs (21). The slider (5) is provided with a rotating shaft (85) which is rotatably mounted thereon, the support (1) is provided with a radial hole (12) for the rotating shaft (85) to pass through, the upper end of the rotating shaft (85) is provided with a first bevel gear (86), the tapping mechanism comprises a housing (9) fixedly connected to the slider (5), a rotating rod (88) is rotatably mounted in the housing (9), the inner end of the rotating rod (88) is provided with a tapping assembly for machining the pipe thread of the malleable cast iron pipe (4), and the outer end of the rotating rod (88) is provided with a threaded rod which is engaged with the first bevel gear. A second bevel gear (87) meshed with a wheel (86) is provided below the support (1) with a driving motor, a driving gear (8) and four transmission gears (81), the driving gear (8) and the driving motor are transmission-connected, the driving gear (8) meshes with the four transmission gears (81), an upper fixed disk (84) is provided at the lower end of the rotating shaft (85), a lower fixed disk (82) is provided on the transmission gear (81), and a sliding disk (83) is slidably provided between the upper fixed disk (84) and the lower fixed disk (82).

2. The processing device for malleable cast iron pipe according to claim 1, characterized in that: An upper slide groove is formed on the lower side of the upper fixed plate (84), a lower slide groove is formed on the upper side of the lower fixed plate (82), an upper slide bar slidably arranged in the upper slide groove is formed on the upper side of the sliding plate (83), and a lower slide bar slidably arranged in the lower slide groove is formed on the lower side of the sliding plate (83), and the upper slide bars and the lower slide bars are arranged alternately.

3. The processing device for malleable cast iron pipe according to claim 2, characterized in that: The projections of the upper slide bar and the lower slide bar on the sliding plate are perpendicular to each other.

4. The processing device for malleable cast iron pipe according to claim 1, characterized in that: The tapping assembly comprises a chuck connected to the inner end of the rotating rod (88), and a tapping head is detachably fixedly arranged on the chuck.

5. The processing device for malleable cast iron pipe according to claim 1, characterized in that: The tapping assembly comprises at least two tapping pieces (98), a chamber opening toward the inner end is formed in the shell (9), a partition block (91) is formed in the chamber, the partition block (91) partitions the chamber into an inner chamber (92) and an outer chamber (93), an annular channel (99) is formed on the end surface of the inner end of the shell (9) and on the cavity wall of the inner chamber (92), a number of mounting blocks (97) matching the number of tapping pieces (98) are rotatably arranged in the annular channel (99), each tapping piece (98) is mounted on a corresponding mounting block (97), a pull rod (95) is rotatably arranged on the partition block (91), the pull rod (95) and the rotating rod (88) are connected to each other. Coaxially arranged and connected by splines, a spring (94) is provided on the rotating rod (88) and is located inside the outer cavity (93), a sealing disk (951) is formed on the outer end of the pull rod (95) and is slidably arranged inside the outer cavity (93), two ends of the spring (94) are abutted between the sealing disk (951) and the inner wall of the outer cavity (93), a connecting disk (952) is formed at the inner end of the pull rod (95), a connecting rod (96) is hinged between the connecting disk (952) and each mounting block (97), an air inlet and an air outlet connected to the outer cavity (93) are provided on the shell (9), and the air inlet and the air outlet are connected to an external pneumatic device.

6. The processing device for malleable cast iron pipe according to claim 1, characterized in that: The fixed module (3) is rotatably arranged on a mounting seat, and a graduated disc is formed on the mounting seat (33).

7. The processing device for malleable cast iron pipe according to claim 1, characterized in that: A height adjustment mechanism is provided between the fixed module (3) and the mounting seat (33).

8. The processing device for malleable cast iron pipe according to claim 1, characterized in that: The mounting seat (33) is provided with an inclined top block (34), an inclined sliding block (35) is provided on the inclined top block (34), an adjusting screw (36) is mounted on the mounting seat (33), the adjusting screw (36) is connected to the inclined top block (34), a height adjustment handle (37) is provided at the outer end of the adjusting screw (36), a turbine is provided in the inclined sliding block (35), a worm (38) meshing with the turbine is provided outside the inclined sliding block (35), an angle adjustment handle is connected to the outer end of the worm (38), and the bottom of the fixed module (3) is fixedly connected to the turbine.

9. The processing device for malleable cast iron pipe according to claim 1, characterized in that: The movable module (31) is provided with a bolt hole, the fixed module (3) is provided with a threaded groove, and the movable module (31) and the fixed module (3) are fixedly connected by bolts (32).

10. The processing device for malleable cast iron pipe according to claim 1, characterized in that: The back of the moving module (31) is provided with an electromagnetic disk, and the moving module (31) and the fixed module (3) are adsorbed by electromagnetics.

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