Corrosion-resistant pipe fitting high-pressure forming system

Abstract

The invention discloses a high-pressure forming system for corrosion-resistant pipe fittings. The high-pressure forming system comprises a bottom plate, a control box, a sky rail vehicle, a movable rail, an iron core filling mechanism, a cover plate grabbing mechanism, a mold clamping mechanism, a mold air exhaust mechanism, a high-pressure forming mechanism and a plurality of pipe fitting molds. According to the corrosion-resistant pipe fitting high-pressure forming system, the outer mold is positioned through the mold holding and clamping mechanism, the outer mold is filled with a mold iron core through the iron core filling mechanism, the space between the inner wall of the outer mold and the mold iron core is filled with prepared pipe fitting powder, and the cover plate grabbing mechanism grabs a mold cover plate; the sky rail vehicle moves to enable the cover plate grabbing mechanism to move all the pipe fitting molds into the high-pressure forming mechanism, the high-pressure forming mechanism conducts pressurization, pipe fitting powder in all the pipe fitting molds is subjected to cold press forming, and therefore the multiple corrosion-resistant pipe fittings can be pressed and formed at the same time, the production efficiency of the corrosion-resistant pipe fittings can be effectively improved, and the production cost is reduced. And meanwhile, the pipe fitting mold does not need to be manually carried, and the working intensity of workers is greatly reduced.

Description

Technical Field

[0001] The invention relates to a high pressure forming system, in particular to a corrosion resistant pipe fitting high pressure forming system. Background Art

[0002] In the existing industrial manufacturing field, corrosion-resistant pipe fittings are widely used, such as steel, petroleum, chemical, papermaking, environmental protection, non-ferrous metals and pickling and acid addition, etc., where highly corrosive fluids are transported; the existing corrosion-resistant materials generally use PTFE materials; PTFE, also known as polytetrafluoroethylene, has the advantages of low friction coefficient, high temperature resistance (long-term operating temperature can reach 200°C), strong weather resistance, chemical corrosion resistance and good flame retardancy. PTFE is usually cold-pressed with a mold and then sintered; the existing pressing and molding devices for PTFE have low molding efficiency, and it is usually difficult to press and mold multiple pipe fittings, and the production efficiency is low. Summary of the invention

[0003] Purpose of the invention: To provide a corrosion-resistant pipe high-pressure forming system, which can simultaneously press and form multiple pipes with high production efficiency.

[0004] Technical solution: The corrosion-resistant pipe high-pressure forming system provided by the present invention includes a base plate, a control box, a ceiling rail car, a movable rail, an iron core filling mechanism, a cover plate grabbing mechanism, a mold clamping mechanism, a mold exhaust mechanism, a high-pressure forming mechanism and a plurality of pipe fitting molds; the pipe fitting mold includes an outer mold, a mold iron core and a mold cover plate;

[0005] The mold clamping mechanism is installed on the base plate and is used to clamp and position each external mold; the support of the movable track is installed horizontally on the base plate; the overhead rail car moves horizontally on the movable track; the iron core filling mechanism and the cover plate grabbing mechanism are both installed on the overhead rail car, the iron core filling mechanism is used to fill the iron core of each mold into the external mold on the mold clamping mechanism, and the cover plate grabbing mechanism is used to clamp or release the mold cover plate; the mold exhaust mechanism is used to exhaust the external mold to facilitate the external mold to be filled with pipe powder; the high-pressure forming mechanism is installed in a through-type manner on the base plate, and is used to accommodate multiple pipe molds at the same time, and to simultaneously perform high-pressure forming on the pipe powder in the pipe mold; the cover plate grabbing mechanism cooperates with the overhead rail car to move the pipe mold into the high-pressure forming mechanism by grabbing the mold cover plate; a controller is arranged in the control box; the overhead rail car, the iron core filling mechanism, the cover plate grabbing mechanism, the mold clamping mechanism, the mold exhaust mechanism and the high-pressure forming mechanism are all driven and controlled by the controller; a display screen and a key panel electrically connected to the controller are installed on the control box.

[0006] Furthermore, the outer mold includes a molding tube and a positioning base; a plurality of air grooves are vertically arranged on the inner wall of the molding tube; a plurality of annular tubes connected to the air grooves through air holes are integrally arranged at intervals on the molding tube; a docking port is installed on each annular tube; an extrusion air bag is wrapped on the inner wall of the molding tube; the mold cover plate and the positioning base are respectively installed on the upper and lower ends of the molding tube; the mold iron core is used for coaxial insertion in the molding tube.

[0007] Furthermore, the overhead crane comprises an overhead crane tube body, a mounting seat, a transverse movement unit, a lifting unit and a longitudinal movement unit; the overhead crane tube body is mounted on the movable track in a transverse sliding manner; the transverse movement unit is used to drive the overhead crane tube body to move transversely; the lifting unit is mounted on the overhead crane tube body; the longitudinal movement unit is mounted on the lifting unit, and the longitudinal movement unit is driven to move up and down by the lifting unit; the mounting seat is mounted on the longitudinal movement unit, and the mounting seat is driven to move longitudinally by the longitudinal movement unit; the iron core filling mechanism and the cover plate grabbing mechanism are both mounted on the mounting seat; the transverse movement unit, the lifting unit and the longitudinal movement unit are all driven and controlled by a controller.

[0008] Furthermore, the iron core filling mechanism includes a pushing drive motor, a rotating tube, a rotating push rod and a push-down spring; the rotating tube is rotatably installed on the overhead rail car; the pushing drive motor drives the rotating tube to rotate through a pushing gear transmission pair, and is electrically connected to the controller through a pushing drive circuit; the rotating push rod coaxially slides through the rotating tube and rotates synchronously with the rotating tube; a lifting screw is coaxially fixed on the lower end of the rotating push rod; a lifting threaded hole for screwing the lifting screw is provided on the upper end of the mold iron core; a lower pressure seat is coaxially provided on the upper end of the rotating push rod; an L-shaped bracket is installed on the overhead rail car; the push-down spring is elastically supported between the horizontal bracket plate of the L-shaped bracket and the lower pressure seat.

[0009] Furthermore, the cover grabbing mechanism includes a first locking drive motor, an insertion seat, a locking internal threaded tube and a locking external threaded tube; the insertion seat is installed on the overhead rail vehicle; a lifting ear for being inserted into the insertion seat is provided on the mold cover; the locking internal threaded tube is connected and fixed on the insertion seat; the locking external threaded tube is threadedly installed in the locking internal threaded tube; a locking shaft for driving the locking external threaded tube to rotate is rotatably installed in the locking internal threaded tube; the first locking drive motor is used to drive the locking shaft to rotate, and is electrically connected to the controller through the first locking drive circuit; a locking plug is installed on the locking external threaded tube, the end of which is used to extend into the insertion seat and pass through the lifting hole of the lifting ear.

[0010] Furthermore, the mold clamping mechanism includes a positioning bracket and a plurality of clamping positioning branches; each clamping positioning branch includes a clamping positioning unit and a rotating support unit;

[0011] The positioning bracket is installed horizontally on the base plate; the clamping positioning units of each clamping positioning branch are installed on the positioning bracket at intervals, and are all used to movably clamp the outer mold to keep the outer mold vertical; each rotation support unit is installed on the base plate, and corresponds to the position of each clamping positioning branch, and is used to support the outer mold on the corresponding clamping positioning branch and drive the outer mold to rotate; the clamping positioning unit and the rotation support unit are both driven and controlled by the controller.

[0012] Furthermore, the rotating support unit includes a rotating drive motor and a supporting turntable; the supporting turntable is rotatably mounted on the base plate and is used to coaxially support the bottom of the outer mold; the rotating drive motor drives the supporting turntable to rotate via a rotating worm gear transmission pair, and is electrically connected to the controller via a rotating drive circuit; a plurality of position sensors electrically connected to the controller are mounted on the positioning bracket, and each position sensor corresponds to each clamping positioning branch, and is used to detect the rotational position of each outer mold.

[0013] Furthermore, the mold vacuum mechanism includes a vacuum pump, a docking tube, multiple vacuum pipes and multiple locking units; each locking unit is installed on the positioning bracket at intervals; each vacuum pipe is vertically installed on each locking unit, and the locking unit drives the vacuum pipe to move horizontally; multiple branch air pipes are connected on the vacuum pipe; the branch air pipes of each vacuum pipe are used to dock with the outer mold on each clamp positioning branch; the vacuum pump is installed on the bottom plate and is electrically connected to the controller through the pump drive circuit; the docking tube is docked and installed on the air inlet of the vacuum pump; multiple check valves are installed on the docking tube; each check valve is docked with each vacuum pipe through a vacuum hose.

[0014] Furthermore, the high pressure forming mechanism includes a high pressure tank, a pressure cover, a hydraulic cylinder, a lock balancing unit and a swing unit;

[0015] The high-pressure tank is installed through the base plate to accommodate various pipe fitting molds placed vertically; the swing unit is installed on the base plate and is driven and controlled by the controller; the hydraulic cylinder is installed on the swing unit, and the swing unit drives the hydraulic cylinder to swing horizontally; the gland is installed on the output end of the hydraulic cylinder; the hydraulic cylinder is used to drive the gland in and out of the high-pressure tank, and the circumferential side of the gland is sealed and slidably matched with the inner wall of the high-pressure tank; the locking balance unit is used to lock the swing unit; and a venting unit is installed on the gland for relieving pressure in the high-pressure tank when the gland moves up.

[0016] Furthermore, the venting unit includes a venting rod and a return spring; a venting hole is vertically arranged on the pressure cover; a countersink is coaxially arranged at the lower end of the venting hole; a venting pipe with a top closed is cover-type installed on the upper end of the venting hole; a pressure relief hole is arranged on the lower side of the venting pipe; the venting rod is slidably inserted into the venting hole, and the upper end extends into the venting pipe; a guide piston slidably installed in the venting pipe is installed on the inserted end of the venting rod; the return spring is used to drive the guide piston to move upward; a venting groove extending to the upper end is vertically arranged on the venting rod; a sealing plug sealably inserted in the countersink is fixed to the lower end of the venting rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the outer mold is positioned by the mold clamping mechanism, the iron core filling mechanism fills the mold core into the outer mold, the configured pipe powder is filled between the inner wall of the outer mold and the mold core, the cover plate grabbing mechanism grabs the mold cover plate and buckles it on the outer mold, the mold cover plate is manually fixed to the outer mold, the overhead rail car drives the iron core filling mechanism and the cover plate grabbing mechanism to move, so that the cover plate grabbing mechanism drives the pipe mold as a whole to move into the high-pressure forming mechanism through the mold cover plate, the cover plate grabbing mechanism releases the mold cover plate, and each pipe mold is moved into the high-pressure forming mechanism, the high-pressure forming mechanism is filled with water, and the high-pressure forming mechanism is pressurized to make the pipe powder in each pipe mold cold-pressed, thereby realizing the simultaneous pressing and forming of multiple corrosion-resistant pipes, which can effectively improve the production efficiency of corrosion-resistant pipes, and at the same time, there is no need to manually carry the pipe molds, which greatly reduces the work intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the clamp positioning branch of the present invention;

[0020] Figure 3 is a cross-sectional view of the outer mold of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the cross-shaped protrusion of the present invention;

[0022] Figure 5 is an enlarged view of the sky rail vehicle of the present invention;

[0023] Figure 6 It is a schematic diagram of the installation of the cover plate grabbing mechanism of the present invention;

[0024] Figure 7 is a cross-sectional view of the cover plate grabbing mechanism of the present invention;

[0025] Figure 8 It is an assembly diagram of the air release unit of the present invention;

[0026] Fig. 9 A top view of the high-pressure tank of the present invention;

[0027] Fig.10 It is a schematic diagram of the circuit structure of the present invention;

[0028] In the figure: 1, bottom plate; 2, pillar; 3, moving track; 4, control box; 5, display screen; 6, key panel; 7, overhead crane tube body; 8, sliding groove; 9, sliding roller; 10, transverse rack; 11, transverse drive motor; 12, transverse gear; 13, lifting strip hole; 14, lifting drive screw; 15, lifting square tube; 16, lifting drive motor; 17, longitudinal square tube; 18, longitudinal drive motor; 19, longitudinal sleeve; 20, mounting seat; 21, plug-in seat; 22, plug-in slot; 23, locking internal threaded tube; 24, first locking drive motor; 2 5. Locking shaft; 26. Locking guide groove; 27. Locking external threaded tube; 28. Locking insert; 29. ​​Locking blind hole; 30. L-shaped bracket; 31. Pushing drive motor; 32. Pushing spring; 33. Pushing boss; 34. Pressing seat; 35. Rotating push rod; 36. Pushing guide groove; 37. Lifting screw; 38. Rotating tube; 39. Positioning sleeve; 40. Annular ramp; 41. Mold core; 42. Cross-shaped groove; 43. Forming tube; 44. Mounting flange; 45. Sealing ring; 46. Extrusion airbag; 47. Air groove; 48. Annular tube; 50. Cross-shaped protrusion; 51. Positioning base; 52. Mold cover; 53. Lifting ear; 54. Rotary drive motor; 55. Support turntable; 56. Vacuum pump; 57. Docking pipe; 58. Check valve; 59. Vacuum hose; 60. Vacuum port; 61. Vacuum pipe; 62. Branch air pipe; 63. Docking port; 64. Moving cross frame; 65. Locking guide groove; 66. Second locking drive motor; 67. Locking drive screw; 68. Locking seat; 69. Clamping drive motor; 70. Clamping drive screw; 71. Clamping drive seat; 72. Arc clamping plate; 7 3. Clamping roller; 74. Position sensor; 75. Walking plate; 76. High-pressure tank; 77. Pressure cover; 78. Sealing ring; 79. Annular groove; 80. Vent pipe; 81. Countersink; 82. Vent rod; 83. Sealing plug; 84. Sealing cushion layer; 85. Vent groove; 86. Guide piston; 87. Reset spring; 88. Pressure relief hole; 89. Swing column; 90. Swing sleeve; 91. Swing drive motor; 92. Hydraulic cylinder; 93. Swing seat; 94. Lock rod; 95. Buckle lock block; 96. Lock seat; 97. Buckle notch; 98. Mold positioning groove. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] Embodiment 1:

[0033] like Figure 1-10 As shown, a corrosion-resistant pipe high-pressure forming system provided by the present invention comprises: a base plate 1, a control box 4, a ceiling rail car, a movable track 3, an iron core filling mechanism, a cover plate grabbing mechanism, a mold clamping mechanism, a mold exhaust mechanism, a high-pressure forming mechanism and a plurality of pipe fitting molds; the pipe fitting mold comprises an outer mold, a mold iron core 41 and a mold cover plate 52;

[0034] The mold clamping mechanism is installed on the bottom plate 1 and is used to clamp and position each external mold;

[0035] Pillars 2 are vertically fixed on the left and right edges of the bottom plate 1; the two ends of the moving track 3 are respectively fixed on the two pillars 2; the overhead rail car moves horizontally on the moving track 3; the iron core filling mechanism and the cover plate grabbing mechanism are installed on the overhead rail car, the iron core filling mechanism is used to fill each mold iron core 41 into the outer mold on the mold clamping mechanism, and the cover plate grabbing mechanism is used to clamp or release the mold cover plate 52; the mold exhaust mechanism is used to exhaust the outer mold to facilitate the outer mold to be filled with pipe powder; the high-pressure forming mechanism is through-installed on the bottom plate 1, which is used to accommodate multiple pipe molds at the same time and simultaneously perform high-pressure forming on the pipe powder in the pipe mold ; The cover plate grabbing mechanism cooperates with the overhead rail car to move the pipe fitting mold into the high-pressure forming mechanism by grabbing the mold cover plate 52; the control box 4 is installed on one of the pillars 2, and a controller is arranged in the control box 4; the overhead rail car, the core filling mechanism, the cover plate grabbing mechanism, the mold clamping mechanism, the mold exhaust mechanism and the high-pressure forming mechanism are all driven and controlled by the controller; a display screen 5 and a button panel 6 electrically connected to the controller are installed on the control box 4; the button panel 6 is provided with a position selection button, a cover lifting button, a cover placing button, a rod pulling button, a rod placing button, an exhaust button, an exhaust button, a placing button, a pressing button and a back-hanging button.

[0036] The outer mold is positioned by the mold clamping mechanism, the core filling mechanism fills the mold core 41 into the outer mold, and the configured pipe powder is filled between the inner wall of the outer mold and the mold core 41. The cover plate grabbing mechanism grabs the mold cover plate 52 and buckles it on the outer mold. The mold cover plate 52 is fixed to the outer mold manually, and the overhead rail car drives the core filling mechanism and the cover plate grabbing mechanism to move, so that the cover plate grabbing mechanism drives the pipe mold as a whole to move into the high-pressure forming mechanism through the mold cover plate 52. The cover plate grabbing mechanism releases the mold cover plate 52, and each pipe mold is moved To the high-pressure forming mechanism, water is filled in the high-pressure forming mechanism, and the high-pressure forming mechanism is pressurized to make the pipe powder in each pipe fitting mold cold-pressed, thereby realizing the simultaneous pressing and molding of multiple corrosion-resistant pipe fittings, which can effectively improve the production efficiency of corrosion-resistant pipe fittings. At the same time, there is no need to manually carry the pipe fitting molds, which greatly reduces the work intensity of the staff; the various buttons on the button panel 6 are used to conveniently control the operation of the overhead rail car, the core filling mechanism, the cover plate grabbing mechanism, the mold clamping mechanism, the mold exhaust mechanism and the high-pressure forming mechanism, which is convenient for coordination with manual work.

[0037] Further, the outer mold includes a forming tube 43 and a positioning base 51; a plurality of annular tubes 48 are integrally arranged at intervals on the forming tube 43; a plurality of air-passing grooves 47 are vertically arranged at intervals on the inner wall of the forming tube 43; an air-passing hole connected to each air-passing groove 47 is arranged on each annular tube 48; a docking port 63 is installed on each annular tube 48; an extrusion airbag 46 is wrapped and arranged on the inner wall of the forming tube 43;

[0038] Mounting flanges 44 are provided on both upper and lower ends of the forming tube 43; a sealing ring 45 is installed on the upper mounting flange 44; the mold cover plate 52 and the positioning base 51 are respectively installed on the mounting flanges 44 on the upper and lower sides; a boss extending into the forming tube 43 is integrally provided at the center of the upper side surface of the positioning base 51; a cross-shaped protrusion 50 is provided at the center of the side surface of the boss; the mold core 41 is used to be inserted into the forming tube 43; a cross-shaped groove 42 for engaging the cross-shaped protrusion 50 is provided at the center of the lower end of the mold core 41.

[0039] By utilizing the cooperation among the annular tube 48, the air groove 47, the air hole and the extrusion air bag 46, after the pipe fitting mold enters the high-pressure forming mechanism, water enters the extrusion air bag 46 through the docking port 63, and the high-pressure forming mechanism pressurizes the extrusion air bag 46 to obtain high pressure, and the pipe fitting powder is pressed tightly against the mold core 41, thereby realizing compression molding. At the same time, when the pipe fitting powder is filled, the mold exhaust mechanism extracts the gas between the extrusion air bag 46 and the forming tube 43, so that the extrusion air bag 46 is tightly attached to the inner wall of the forming tube 43, which is convenient for filling the pipe fitting powder. The provision of multiple air grooves 47 and the annular tube 48 can make the extrusion air bag 46 adsorbed on the inner wall of the forming tube 43 as smoothly as possible, thereby preventing the wall thickness of the corrosion-resistant pipe fittings pressed out later from being affected. The docking port 63 is utilized to facilitate drainage after the pipe fitting mold is taken out of the high-pressure forming mechanism.

[0040] Further, the overhead rail vehicle includes an overhead vehicle body 7, a mounting seat 20, a transverse movement unit, a lifting unit and a longitudinal movement unit; the transverse movement unit includes a transverse movement gear rack transmission pair and a transverse movement drive motor 11; the transverse movement gear rack transmission pair includes a transverse movement gear 12 and a transverse movement rack 10; the lifting unit includes a lifting square tube 15, a lifting drive screw 14 and a lifting drive motor 16; the longitudinal movement unit includes a longitudinal movement drive motor 18, a longitudinal movement sleeve 19 and a longitudinal movement square tube 17;

[0041] Sliding grooves 8 are transversely arranged on both the front and rear side surfaces of the moving track 3; the moving track 3 passes through the crown crane tube body 7, and a plurality of sliding rollers 9 that travel on the corresponding side sliding grooves 8 are rotatably installed on the inner walls of the front and rear side walls of the crown crane tube body 7; a transverse rack 10 is transversely installed on the upper side surface of the moving track 3; a transverse gear 12 is rotatably installed on the crown crane tube body 7 and meshes with the transverse rack 10; a transverse driving motor 11 is used to drive the transverse gear 12 to rotate, and is electrically connected to the controller through a transverse driving circuit;

[0042] The upper end of the lifting square tube 15 is fixed on the lower side of the crown block tube body 7; a lifting block is vertically slidably arranged in the lifting square tube 15; a lifting drive screw 14 is rotatably installed vertically in the lifting square tube 15, and a thread is screwed through the lifting block; a lifting drive motor 16 drives the lifting drive screw 14 to rotate through a lifting chain transmission pair, and is electrically connected to the controller through a lifting drive circuit; a lifting strip hole 13 is vertically arranged on the front side of the lifting square tube 15;

[0043] The rear end of the longitudinal moving square tube 17 passes through the lifting strip hole and is fixed on the lifting block; a longitudinal moving block is longitudinally slidably arranged in the longitudinal moving square tube 17; a longitudinal moving strip hole is longitudinally arranged on the longitudinal moving square tube 17; a longitudinal moving sleeve 19 is longitudinally slidably sleeved on the longitudinal moving square tube 17, and is fixed on the longitudinal moving block through a longitudinal moving connecting rod passing through the longitudinal moving strip hole; a longitudinal moving driving screw rod that passes through the longitudinal moving block is longitudinally rotatably installed in the longitudinal moving square tube 17; a longitudinal moving driving motor 18 is used to drive the longitudinal moving driving screw rod to rotate, and is electrically connected to the controller through a longitudinal moving driving circuit;

[0044] The mounting seat 20 is fixed on the longitudinal sleeve 19 ; the core filling mechanism and the cover plate grabbing mechanism are both mounted on the mounting seat 20 .

[0045] The lateral, vertical and longitudinal positions of the mounting seat 20 are adjusted respectively by using the lateral movement unit, the lifting unit and the longitudinal movement unit, so that the core filling mechanism can fill the mold core 41 of each outer mold on the mold clamping mechanism, and the cover plate grabbing mechanism can cover the mold cover plate 52 on each outer mold on the mold clamping mechanism, and drive the pipe fitting mold to move into the high-pressure forming mechanism; the cooperation between the sliding groove 8 and the sliding roller 9 is utilized to reduce the friction between the overhead crane tube body 7 and the moving rail 3, which can effectively improve the movement stability of the overhead crane.

[0046] Furthermore, the core filling mechanism includes a push drive motor 31, a rotating tube 38, a rotating push rod 35, a positioning sleeve 39 and a push-down spring 32; the rotating tube 38 is vertically penetrated and rotatably installed on the right side of the mounting seat 20; the upper end of the positioning sleeve 39 is fixed on the lower side of the mounting seat 20 and is coaxial with the rotating tube 38, and an annular slope 40 is provided at the lower inner tube mouth of the positioning sleeve 39 for facilitating the insertion of the mold core 41; the push drive motor 31 drives the rotating tube 38 to rotate through the push gear transmission pair, and is electrically connected to the controller through the push drive circuit; the rotating push rod 35 coaxially slides through the rotating tube 38; A push guide groove 36 is vertically arranged on 35; a downward pressing guide block sliding along the push guide groove 36 is arranged on the inner wall of the rotating tube 38; a lifting screw 37 is coaxially fixed on the lower end of the rotating push rod 35; a lifting threaded hole for screwing the lifting screw 37 is arranged on the upper end of the mold core 41; a downward pressing seat 34 is coaxially arranged on the upper end of the rotating push rod 35; a pushing boss 33 is coaxially arranged on the upper side surface of the downward pressing seat 34; an L-shaped bracket 30 is installed on the right side of the mounting seat 20; a downward pushing spring 32 is elastically supported between the horizontal bracket plate of the L-shaped bracket 30 and the downward pressing seat 34, and is sleeved on the pushing boss 33.

[0047] The push drive motor 31 drives the rotating tube 38 to rotate through the push gear transmission pair under the control of the controller, and the rotating push rod 35 drives the lifting screw 37 to rotate. When taking out the mold core 41, the lifting unit moves downward slightly, and the annular slope 40 on the positioning sleeve 39 guides the upper end of the mold core 41 to be inserted into the positioning sleeve 39, so that the lifting screw 37 can be aligned with the lifting threaded hole, and the push-down spring 32 presses the lower pressure seat 34 to ensure that the lifting screw 37 can be screwed into the lifting threaded hole. Then the lifting unit moves up to take out the mold core 41. When filling the mold core 41, the lifting unit moves downward to make the mold core 41 enter the forming tube 43, and the cross-shaped protrusion 50 is embedded in the cross-shaped groove 42. The push drive motor 31 is reversed to make the lifting screw 37 screw out of the lifting threaded hole, and the mold core 41 is separated from the core filling mechanism and remains in the forming tube 43 to achieve filling.

[0048] Further, the cover plate grabbing mechanism includes a first locking drive motor 24, an inserting seat 21, a locking internal threaded tube 23, a locking external threaded tube 27 and a locking inserting tube 28; a lifting ear 53 is arranged on the upper side of the mold cover plate 52; the top of the inserting seat 21 is fixed on the left side of the lower side of the mounting seat 20; an inserting slot 22 for inserting the lifting ear 53 is arranged on the lower side of the inserting seat 21; one end of the locking internal threaded tube 23 is connected and fixed on the front side of the inserting seat 21; the locking external threaded tube 27 is threadedly installed in the locking internal threaded tube 23; a locking shaft 25 is rotatably installed in the locking internal threaded tube 23; the first locking drive motor 24 is used to drive the locking shaft 25 to rotate, and is electrically connected to the controller through the first locking drive circuit;

[0049] The locking shaft 25 longitudinally slides through the locking external threaded tube 27; a locking guide groove 26 is longitudinally arranged on the locking shaft 25, and a locking guide block slidingly matched with the locking guide groove 26 is arranged on the inner wall of the locking external threaded tube 27; a locking blind hole 29 corresponding to the position of the locking internal threaded tube 23 is arranged on the rear side wall of the insertion groove 22; the locking insert 28 is coaxially fixed on the locking external threaded tube 27, and the end portion is used to pass through the lifting hole of the lifting ear 53 and then extend into the locking blind hole 29, and the locking insert 28 can be completely retracted into the locking internal threaded tube 23.

[0050] The first locking drive motor 24 is used to drive the locking shaft 25 to rotate under the control of the controller, and the locking external threaded tube 27 drives the locking insert 28 to rotate and move longitudinally. When grabbing, the ear 53 of the mold cover plate 52 extends into the insertion groove 22, and the locking insert 28 moves longitudinally to pass through the lifting hole of the ear 53, and the cut end is inserted into the locking blind hole 29 to achieve the grabbing and locking of the mold cover plate 52. When releasing, the first locking drive motor 24 is reversed, and the locking insert 28 moves longitudinally to disengage from the locking blind hole 29 and the lifting hole of the ear 53 and then retract into the locking internal threaded tube 23 to achieve the release of the mold cover plate 52; the locking blind hole 29 can provide a certain support for the locking insert 28, so that the locking insert 28 can withstand a certain load.

[0051] Furthermore, the mold clamping mechanism includes a positioning bracket and a plurality of clamping positioning branches; each clamping positioning branch includes a clamping positioning unit and a rotating support unit; the clamping positioning branch includes a clamping drive motor 69, a clamping drive screw 70, two clamping drive seats 71 and two arc-shaped clamping plates 72; the positioning bracket includes a movable horizontal frame 64 and two bracket vertical plates; the movable horizontal frame 64 is horizontally installed on the left side of the bottom plate 1 through two bracket vertical plates; a walking plate 75 is connected and fixed on the upper side of the two bracket vertical plates; a clamping guide groove is horizontally arranged on the front side of the movable horizontal frame 64; the clamping drive screws 70 of each clamping positioning branch are all installed in the clamping guide groove in an interval-type rotation manner; the clamping drive screw 70 The left and right sides have the same thread pitch and opposite rotation direction; the clamp driving motor 69 is used to drive the clamp driving screw 70 to rotate, and is electrically connected to the controller through the clamp driving circuit; the two clamp driving seats 71 are both installed in the clamp guide groove in a transverse sliding manner; the left and right sides of the clamp driving screw 70 are respectively threaded and screwed through the two clamp driving seats 71; the two arc-shaped clamping plates 72 are respectively installed on the two clamp driving seats 71 through L-shaped mounting plates, and are used to clamp the outer circumferential wall of the outer mold; a plurality of clamping rollers 73 that travel on the outer circumferential wall of the outer mold are rotatably installed at intervals on the upper and lower edges of the two arc-shaped clamping plates 72; the clamp positioning unit is installed on the base plate 1, and is used to support the outer mold and drive the outer mold to rotate.

[0052] The clamp driving motor 69 is used to drive the clamp driving screw 70 to rotate, so that the two clamp driving seats 71 drive the two arc-shaped clamping plates 72 to move relative to each other, so that the two clamping rollers 73 are pressed against the outer circumferential wall of the outer mold, so that the outer mold can still rotate under the drive of the rotating support unit while the axis remains vertical, thereby realizing movable clamping.

[0053] Furthermore, the rotary support unit includes a rotary drive motor 54 and a support turntable 55; the support turntable 55 is rotatably mounted on the bottom plate 1 and is used to coaxially support the bottom of the outer mold; the rotary drive motor 54 drives the support turntable 55 to rotate by rotating the worm gear transmission pair, and is electrically connected to the controller through the rotary drive circuit; a position sensor 74 for detecting the position of the docking port 63 of the outer mold on each clamping positioning unit is installed on the edge of the movable horizontal frame 64, and the position sensor 74 is electrically connected to the controller. The rotary drive motor 54 drives the support turntable 55 to rotate by rotating the worm gear transmission pair under the control of the controller, so that the support turntable 55 drives the outer mold to rotate, and the position of the docking port 63 is detected by the position sensor 74. When the docking port 63 is detected, the support turntable 55 stops rotating, and the mold exhaust mechanism can exhaust the pipe fitting mold.

[0054] Furthermore, the mold vacuum mechanism includes a vacuum pump 56, a butt joint pipe 57, a plurality of vacuum pipes 61 and a plurality of locking units; each locking unit includes a second locking drive motor 66, a locking drive screw 67 and a locking seat 68;

[0055] A locking guide groove 65 is horizontally arranged on the front side of the movable horizontal frame 64; the locking drive screw 67 of each locking unit is installed in the locking guide groove 65 in an interval rotation manner; the second locking drive motor 66 is used to drive the locking drive screw 67 to rotate, and is electrically connected to the controller through the second locking drive circuit; the locking seat 68 is installed in the locking guide groove 65 in a horizontal sliding manner, and the locking drive screw 67 is threadedly screwed through the locking seat 68; each exhaust pipe 61 is vertically installed on the locking seat 68 of each locking unit; a plurality of branch air pipes 62 are connected on the exhaust pipe 61, and the branch air pipes 62 of each exhaust pipe 61 are respectively used to dock with the external molds on each clamp positioning branch, and each branch air pipe 62 of the same exhaust pipe 61 is used to dock with each docking port 63 on an external mold at the same time; an exhaust port 60 is arranged on the exhaust pipe 61;

[0056] The vacuum pump 56 is installed on the base plate 1 and is electrically connected to the controller through a pump drive circuit; a docking tube 57 is docked and installed on the air inlet of the vacuum pump 56; a plurality of check valves 58 are installed on the docking tube 57; each check valve 58 is docked with each air exhaust port 60 through an air exhaust hose 59.

[0057] The second locking drive motor 66 is used to drive the exhaust pipe 61 to move horizontally in a small range under the control of the controller. After the rotation of the rotating support unit is completed, the branch air pipes 62 of the exhaust pipe 61 are respectively connected to the docking ports 63 of the outer mold; the vacuum pump 56 operates under the control of the controller, and the gas between the extrusion airbag 46 and the forming tube 43 is successively extracted by the vacuum pump 56 through the docking port 63, the branch air pipe 62, the exhaust pipe 61, the exhaust port 60, the exhaust hose 59 and the docking pipe 57, so as to realize the gas extraction of the extrusion airbag 46, which is convenient for filling the pipe powder. When the outer mold is evacuated, the vacuum pump 56 is started, and the vacuum pump 56 is stopped after the outer mold filling is completed; the check valve 58 is used to control whether each exhaust hose 59 is ventilated, so that it can be adaptively adjusted according to the number of pipe molds put into use. When there is no pipe mold on the clamp positioning branch corresponding to the exhaust pipe 61, the corresponding check valve 58 is closed.

[0058] Further, the high pressure forming mechanism includes a high pressure tank 76, a pressure cover 77, a hydraulic cylinder 92, a lock balancing unit and a swing unit; the swing unit includes a swing column 89, a swing sleeve 90, a swing drive motor 91 and a swing seat 93; the lock balancing unit includes a lock rod 94 and a lock seat 96;

[0059] The high-pressure tank 76 is installed on the right side of the base plate 1 in a through-type manner; a plurality of mold positioning grooves 98 for inserting pipe fitting molds are provided at the bottom of the high-pressure tank 76; the lower end of the swing column 89 is fixed on the base plate 1 and is located on the left side of the high-pressure tank 76; the swing sleeve 90 is rotationally coaxially installed on the upper side of the swing column 89; the swing seat 93 is fixed on the swing sleeve 90; the swing drive motor 91 is installed on the swing seat 93, and is transmission-connected to the upper end of the swing column 89 through a swing worm gear transmission pair, and is electrically connected to the controller through a swing drive circuit; the hydraulic cylinder 92 is fixed on the swing seat 93 in a through-type manner, and is used to drive the gland 77 to enter and exit the high-pressure tank 76, and the circumferential side surface of the gland 77 is slidably matched with the inner wall of the high-pressure tank 76; An annular groove 79 is provided on the lower side of the circumferential side surface of the pressure cover 77; a sealing ring 78 for pressing tightly against the inner wall of the high-pressure tank 76 is installed on the annular groove 79; a venting unit is installed on the pressure cover 77, and the venting unit is used to release the pressure in the high-pressure tank 76 when the pressure cover 77 moves up; the lock seat 96 is fixed on the bottom plate 1 on the right side of the high-pressure tank 76 and is fixedly connected to the high-pressure tank 76; a snap-on notch 97 extending to the front side is provided on the upper side surface of the lock seat 96, and the snap-on notch 97 is in the shape of a step with a narrow upper part and a narrow lower part; the upper end of the lock rod 94 is fixed on the right end of the swing seat 93; the lower end of the lock rod 94 is used to swing into the snap-on notch 97, and a snap-on lock block 95 for snapping on the snap-on notch 97 is fixed on the lower end of the lock rod 94.

[0060] The swing drive motor 91 drives the swing seat 93 to swing around the swing column 89 through the swing worm gear transmission pair under the control of the controller, so that the swing seat 93 drives the hydraulic cylinder 92 and the pressure cover 77 to move, so as to realize the cover opening action, which is convenient for the cover plate grabbing mechanism to fill each pipe fitting mold into each mold positioning groove 98; the hydraulic cylinder 92 is supplied with oil by the external hydraulic system, and the controller sends a control signal to the hydraulic system; the hydraulic cylinder 92 is used to control the pressure cover 77 to press down into the high-pressure tank 76, and the high-pressure tank 76 is filled with water. The pressure cover 77 is pressed down to generate high pressure in the high-pressure tank 76, so that water enters the extrusion airbag 46, giving the extrusion airbag 46 high pressure, and the pipe is pressed. The powder of the parts is tightly pressed against the mold core 41, thereby realizing high-pressure molding; the sealing ring 78 is used to improve the sealing between the pressure cover 77 and the high-pressure tank 76; the cooperation between the locking rod 94, the locking seat 96 and the snap lock block 95 can realize the swing locking of the swing seat 93. When the snap lock block 95 is snapped in the snap slot 97, the pressure cover 77 is coaxial with the high-pressure tank 76. At the same time, the lock balance unit can share the reverse force acting on the swing seat 93, the swing column 89 and the swing sleeve 90 when the hydraulic cylinder 92 is pressed down, so that the force of the swing seat 93 is balanced; the air release unit is used to release pressure and air when the pressure cover 77 moves up to ensure that the pressure cover 77 can be separated from the high-pressure tank 76.

[0061] Furthermore, the deflation unit includes a deflation pipe 80, a deflation rod 82 and a return spring 87; a deflation hole is vertically arranged on the pressure cover 77; a countersunk hole 81 coaxial with the deflation hole is arranged on the lower side of the pressure cover 77; the upper end of the deflation pipe 80 is closed; the deflation pipe 80 is fixed on the upper side of the pressure cover 77 and covers the deflation hole; a pressure relief hole 88 is arranged on the lower side of the deflation pipe 80; the deflation rod 82 is slidably inserted on the deflation hole, and the upper end extends into the deflation pipe 8 0; a guide piston 86 is installed on the insertion end of the deflation rod 82, which is slidably matched with the inner wall of the deflation pipe 80; a return spring 87 is elastically supported between the guide piston 86 and the upper side of the pressure cover 77, and is sleeved on the deflation rod 82; a deflation groove 85 extending to the insertion end is vertically arranged on the deflation rod 82; a sealing plug 83 inserted in the countersunk hole 81 is fixed on the lower end of the deflation rod 82; a sealing pad layer 84 is arranged on the upper side of the sealing plug 83.

[0062] When the pressure cover 77 moves up to a certain height, negative pressure is generated in the high-pressure tank 76. At this time, the pressure cover 77 continues to move up, and the sealing plug 83 moves down and separates from the countersink 81 under the action of the negative pressure. At this time, external gas enters the high-pressure tank 76 through the pressure relief hole 88 on the vent pipe 80 and the vent groove 85 on the vent rod 82, so that the pressure difference between the inside and outside of the high-pressure tank 76 is balanced, and pressure relief is achieved, thereby ensuring that the pressure cover 77 can be separated from the high-pressure tank 76; the reset spring 87 is used to drive the guide piston 86 to move up, so that the sealing plug 83 re-enters the countersink 81 to achieve reset.

[0063] In the corrosion-resistant pipe high-pressure forming system provided by the present invention, the controller adopts the existing single-chip control module; the display screen 5 adopts the existing display screen; the lateral drive motor 11, the lifting drive motor 16, the longitudinal drive motor 18, the first locking drive motor 24, the push drive motor 31, the rotation drive motor 54, the second locking drive motor 66, the clamp drive motor 69 and the swing drive motor 91 all adopt the existing stepper motor, and the lateral drive circuit, the lifting drive circuit, the longitudinal drive circuit, the first locking drive circuit, the push drive circuit, the rotation drive circuit, the second locking drive circuit, the clamp drive circuit and the swing drive circuit respectively adopt corresponding stepper motor drive circuits; the hydraulic cylinder 92 adopts the existing hydraulic cylinder; the vacuum pump 56 adopts the existing vacuum pump, and the pump drive circuit adopts the corresponding vacuum pump drive circuit; the position sensor 74 adopts the existing position sensor;

[0064] When the corrosion-resistant pipe high pressure forming system provided by the present invention is installed and used, the staff sends a control signal to the controller through the key panel 6 and follows the following steps:

[0065] In the first step, the bottom of each outer mold is supported on each rotating support unit, and the clamp positioning branch clamp corresponds to the outer mold on the rotating support unit;

[0066] The second step is to control the rotation support unit to rotate according to the signal detected by the position sensor 74 so that the docking port 63 is aligned with the branch air pipe 62;

[0067] In the third step, the mold core 41 is manually loaded onto the core filling mechanism, and the lateral movement unit, the lifting unit and the longitudinal movement unit of the overhead rail vehicle cooperate to operate, driving the core filling mechanism to fill each mold core 41 into each outer mold;

[0068] In the fourth step, the locking unit drives the exhaust pipe 61 to move slightly horizontally, so that the branch air pipes 62 of each exhaust pipe 61 are docked on the docking ports 63 of each outer mold, and the vacuum pump 56 performs exhaust;

[0069] Step 5: manually fill the pipe powder into the extrusion airbag 46 and the mold core 41; after the filling is completed, the locking unit drives the exhaust pipe 61 to reset; the vacuum pump 56 stops running;

[0070] In the sixth step, the mold cover plate 52 is manually loaded onto the cover plate grabbing mechanism, and the lateral movement unit, the lifting unit and the longitudinal movement unit of the overhead rail vehicle cooperate to operate, so that the cover plate grabbing mechanism drives a mold cover plate 52 to cover an outer mold, and the mold cover plate 52 is manually fixed on the outer mold;

[0071] In the seventh step, the overhead rail vehicle drives the bottom of the outer mold to leave the rotating support unit, and the corresponding clamping positioning branch is reset;

[0072] In the eighth step, the overhead rail car and the cover plate grabbing mechanism drive the pipe fitting mold to move and fill a mold positioning groove 98 through the mold cover plate 52, and then the cover plate grabbing mechanism releases the mold cover plate 52, and the overhead rail car is reset;

[0073] Step 9, repeating steps 6 to 8 until all mold positioning grooves 98 are filled;

[0074] Step 10: The swing unit drives the hydraulic cylinder 92 and the pressure cover 77 to move until the lock balancing unit limits the swing unit;

[0075] In the eleventh step, the hydraulic cylinder 92 drives the pressure cover 77 to press down into the high-pressure tank 76 to a certain depth. After the high-pressure forming is completed, the hydraulic cylinder 92 drives the pressure cover 77 to move upward, the air release unit releases pressure, and the swing unit opens the cover;

[0076] In the twelfth step, the overhead rail vehicle cooperates with the cover plate grabber to take out each pipe fitting mold and place it on each rotating support unit, and each clamping and positioning unit re-clamps;

[0077] In the thirteenth step, after each mold cover plate 52 is manually removed, the iron core filling mechanism takes each mold iron core 41 out of each outer mold;

[0078] The fourteenth step is to manually take out the pressed corrosion-resistant pipe fittings.

[0079] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A corrosion-resistant pipe high pressure forming system, characterized by: It comprises a base plate (1), a control box (4), an overhead rail car, a movable track (3), an iron core filling mechanism, a cover plate grabbing mechanism, a mold clamping mechanism, a mold exhaust mechanism, a high-pressure forming mechanism, and a plurality of pipe fitting molds; the pipe fitting mold comprises an outer mold, a mold iron core (41), and a mold cover plate (52); The mold clamping mechanism is installed on the bottom plate (1) and is used to clamp and position each outer mold; the moving track (3) is installed horizontally on the bottom plate (1) through the support (2); the overhead rail car moves horizontally on the moving track (3); the iron core filling mechanism and the cover plate grabbing mechanism are both installed on the overhead rail car, the iron core filling mechanism is used to fill each mold iron core (41) into the outer mold on the mold clamping mechanism, and the cover plate grabbing mechanism is used to clamp or release the mold cover plate (52); the mold exhaust mechanism is used to exhaust the outer mold to facilitate the outer mold to be filled with pipe powder; the high-pressure molding mechanism is installed through the bottom plate (2) and the bottom plate (5) is used to fill the outer mold ... The device is installed on a base plate (1) in a through-type manner, and is used to simultaneously accommodate a plurality of pipe fitting molds and simultaneously perform high-pressure molding on the pipe fitting powder in the pipe fitting molds; the cover plate grabbing mechanism cooperates with the overhead rail vehicle to move the pipe fitting mold into the high-pressure molding mechanism by grabbing the mold cover plate (52); a controller is arranged in the control box (4); the overhead rail vehicle, the iron core filling mechanism, the cover plate grabbing mechanism, the mold clamping mechanism, the mold exhaust mechanism and the high-pressure molding mechanism are all driven and controlled by the controller; a display screen (5) and a key panel (6) electrically connected to the controller are installed on the control box (4).

2. The corrosion-resistant pipe high pressure forming system according to claim 1, characterized in that: The outer mold comprises a molding tube (43) and a positioning base (51); a plurality of air grooves (47) are vertically arranged on the inner wall of the molding tube (43); a plurality of annular tubes (48) connected to the air grooves (47) through air holes are integrally arranged on the molding tube (43) at intervals; a docking port (63) is installed on each annular tube (48); an extrusion air bag (46) is wrapped on the inner wall of the molding tube (43); a mold cover plate (52) and a positioning base (51) are respectively installed on the upper and lower ends of the molding tube (43); and the mold iron core (41) is used for coaxial insertion in the molding tube (43).

3. The corrosion-resistant pipe high pressure forming system according to claim 1, characterized in that: The overhead rail vehicle comprises an overhead crane tube body (7), a mounting seat (20), a transverse movement unit, a lifting unit and a longitudinal movement unit; the overhead crane tube body (7) is mounted on the movable track (3) in a transverse sliding manner; the transverse movement unit is used to drive the overhead crane tube body (7) to move transversely; the lifting unit is mounted on the overhead crane tube body (7); the longitudinal movement unit is mounted on the lifting unit, and the longitudinal movement unit is driven to move up and down by the lifting unit; the mounting seat (20) is mounted on the longitudinal movement unit, and the mounting seat (20) is driven to move longitudinally by the longitudinal movement unit; the iron core filling mechanism and the cover plate grabbing mechanism are both mounted on the mounting seat (20); the transverse movement unit, the lifting unit and the longitudinal movement unit are all driven and controlled by a controller.

4. The corrosion-resistant pipe high pressure forming system according to claim 1, characterized in that: The iron core filling mechanism comprises a push drive motor (31), a rotating tube (38), a rotating push rod (35) and a push-down spring (32); the rotating tube (38) is rotatably mounted on the overhead rail vehicle; the push drive motor (31) drives the rotating tube (38) to rotate via a push gear transmission pair, and is electrically connected to a controller via a push drive circuit; the rotating push rod (35) coaxially slides through the rotating tube (38) and rotates synchronously with the rotating tube (38); a lifting screw (37) is coaxially fixed on the lower end of the rotating push rod (35); a lifting threaded hole for screwing the lifting screw (37) is provided on the upper end of the mold iron core (41); a lower pressure seat (34) is coaxially arranged on the upper end of the rotating push rod (35); an L-shaped bracket (30) is installed on the overhead rail vehicle; the push-down spring (32) is elastically supported between the horizontal bracket plate of the L-shaped bracket (30) and the lower pressure seat (34).

5. The corrosion-resistant pipe high pressure forming system according to claim 1, characterized in that: The cover plate grabbing mechanism comprises a first locking drive motor (24), an inserting seat (21), a locking internal threaded tube (23) and a locking external threaded tube (27); the inserting seat (21) is installed on the overhead rail vehicle; a lifting ear (53) for inserting into the inserting seat (21) is arranged on the mold cover plate (52); the locking internal threaded tube (23) is fixed on the inserting seat (21) in a communicating manner; the locking external threaded tube (27) is screwed and installed in the locking internal threaded tube (23); a locking shaft (25) for driving the locking external threaded tube (27) to rotate is rotatably installed in the locking internal threaded tube (23); the first locking drive motor (24) is used to drive the locking shaft (25) to rotate, and is electrically connected to the controller through a first locking drive circuit; a locking insert tube (28) is installed on the locking external threaded tube (27), the end of which is used to extend into the inserting seat (21) and then pass through the lifting hole of the lifting ear (53).

6. The corrosion-resistant pipe high pressure forming system according to claim 1, characterized in that: The mold clamping mechanism includes a positioning bracket and a plurality of clamping positioning branches; each clamping positioning branch includes a clamping positioning unit and a rotating support unit; The positioning bracket is installed horizontally on the base plate (1); the clamping positioning units of each clamping positioning branch are installed at intervals on the positioning bracket, and are used to movably clamp the outer mold so that the outer mold is kept vertical; each rotation support unit is installed on the base plate (1) and corresponds to the position of each clamping positioning branch, and is used to support the outer mold on the corresponding clamping positioning branch and drive the outer mold to rotate; the clamping positioning unit and the rotation support unit are both driven and controlled by a controller.

7. The corrosion-resistant pipe high pressure forming system according to claim 6, characterized in that: The rotary support unit comprises a rotary drive motor (54) and a support turntable (55); the support turntable (55) is rotatably mounted on the bottom plate (1) and is used to coaxially support the bottom of the outer mold; The rotary drive motor (54) drives the support turntable (55) to rotate by rotating the worm gear transmission pair, and is electrically connected to the controller through the rotary drive circuit; a plurality of position sensors (74) electrically connected to the controller are installed on the positioning bracket, and each position sensor (74) corresponds to each clamp positioning branch, and is used to detect the rotation position of each outer mold.

8. The corrosion-resistant pipe high pressure forming system according to claim 6, characterized in that: The mold exhaust mechanism comprises a vacuum pump (56), a docking pipe (57), a plurality of exhaust pipes (61) and a plurality of locking units; each locking unit is installed at intervals on a positioning bracket; each exhaust pipe (61) is vertically installed on each locking unit, and the locking unit drives the exhaust pipe (61) to move horizontally; a plurality of branch air pipes (62) are connectedly arranged on the exhaust pipe (61); the branch air pipes (62) of each exhaust pipe (61) are respectively used to dock with the outer mold on each clamp positioning branch; the vacuum pump (56) is installed on the bottom plate (1) and is electrically connected to the controller through a pump drive circuit; the docking pipe (57) is docked and installed on the air inlet of the vacuum pump (56); a plurality of check valves (58) are installed on the docking pipe (57); each check valve (58) is docked with each exhaust pipe (61) through an exhaust hose (59).

9. The corrosion-resistant pipe high pressure forming system according to claim 1, characterized in that: The high-pressure forming mechanism comprises a high-pressure tank (76), a pressure cover (77), a hydraulic cylinder (92), a lock balancing unit and a swing unit; The high-pressure tank (76) is installed on the bottom plate (1) in a through-type manner, and is used to accommodate each pipe fitting mold to be placed vertically; the swing unit is installed on the bottom plate (1), and is driven and controlled by a controller; The hydraulic cylinder (92) is mounted on the swing unit, and the swing unit drives the hydraulic cylinder (92) to swing horizontally; the pressure cover (77) is mounted on the output end of the hydraulic cylinder (92); the hydraulic cylinder (92) is used to drive the pressure cover (77) to enter and exit the high-pressure tank (76), and the circumferential side surface of the pressure cover (77) is sealed and slidably matched with the inner wall of the high-pressure tank (76); the locking balance unit is used to lock the swing unit; and a venting unit is mounted on the pressure cover (77) for relieving pressure in the high-pressure tank (76) when the pressure cover (77) moves upward.

10. The corrosion-resistant pipe high pressure forming system according to claim 9, characterized in that: The venting unit comprises a venting rod (82) and a return spring (87); a venting hole is vertically arranged on the pressure cover (77); a countersunk hole (81) is coaxially arranged at the lower end of the venting hole; a venting pipe (80) with a top closed is installed in a cover-like manner on the upper end of the venting hole; a pressure relief hole (88) is arranged on the lower side of the venting pipe (80); the venting rod (82) is slidably inserted into the venting hole, and the upper end extends into the venting pipe (80); a guide piston (86) slidably installed in the venting pipe (80) is installed on the inserted end of the venting rod (82); the return spring (87) is used to drive the guide piston (86) to move upward; a venting groove (85) extending to the upper end is vertically arranged on the venting rod (82); and a sealing plug (83) sealingly inserted in the countersunk hole (81) is fixed on the lower end of the venting rod (82).

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