Water expansion forming machine for stainless steel pipe production

Abstract

The invention discloses a water expansion forming machine for stainless steel pipe production, and belongs to the technical field of stainless steel pipe machining equipment.The water expansion forming machine comprises a frame assembly, the frame assembly comprises a machining platform, a pair of water expansion molds are slidably connected to the upper side wall of the machining platform, a collecting groove is formed in the machining platform, and a pipe storage frame is arranged on the upper side of the machining platform; a fixing frame is fixedly connected between the pipe storage frame and the machining platform, an air cylinder is fixedly connected between the fixing frame and the water expansion mold, movable valve shells are arranged on the left side and the right side of the machining platform correspondingly, and two telescopic clamping assemblies are fixedly connected to the opposite side walls of the two movable valve shells correspondingly. According to the scheme, the two telescopic clamping assemblies can be continuously switched through the driving assembly, so that the two telescopic clamping assemblies alternately machine a stainless steel pipe, multiple functions such as automatic feeding, machining and discharging are achieved, manual operation is not needed, potential safety hazards are reduced, and meanwhile the machining efficiency of an existing device on the stainless steel pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel pipe processing equipment, in particular to a water expansion forming machine for stainless steel pipe production. Background Art

[0002] The water expansion molding machine is a kind of equipment used for plastic molding processing, which mainly realizes the molding of plastic materials through the action of water. Its working principle is to heat the plastic particles to a molten state, and then use the pressure of water to inject the molten plastic into the mold, and form the desired product after cooling and solidification. The water expansion molding machine has the advantages of fast molding speed, low energy consumption, and high molding precision. It is widely used in the production of various types of plastic products, such as daily products, auto parts and electronic product housings. By flexibly adjusting the water pressure and temperature parameters, the operator can effectively control the molding quality to meet the needs of different products. Overall, the water expansion molding machine is becoming an important trend in the plastic processing industry with its high efficiency and environmental protection.

[0003] A Chinese patent discloses a clamping device for a water expansion machine for simultaneous production of multiple tubes (authorization announcement number CN217223142U). The patent includes a water expansion machine body, a fixed plate fixedly connected to the front end of the water expansion machine body, a movable plate slidably connected to the top end of the fixed plate, and a driving mechanism for driving the movable plate to move is connected to the fixed plate, an electric cylinder is installed on the top end of the movable plate through a mounting frame, a feed plate is fixedly connected to the output end of the electric cylinder, two annular mounting frames are slidably connected to the top end of the feed plate, three cylinders are installed on the annular mounting frame, and the three cylinders are equidistantly distributed circumferentially on the periphery of the annular mounting frame, the output end of the cylinder passes through the annular mounting frame and is fixedly connected to a clamping ring, and an adjustment component for adjusting the distance between the two annular mounting frames is connected to the feed plate.

[0004] However, in the above patent, it is necessary to manually feed the pipe fittings into the clamping device, including the existing water expansion machine, which also requires manual feeding of the pipe fittings into the corresponding mold, and use the clamping device to clamp the water pipe. After the pipe fittings are processed, they need to be taken away manually. The manual taking method not only has certain safety hazards, but also increases the processing cost of stainless steel pipes, while also reducing the processing efficiency of stainless steel pipes. For this reason, the applicant proposes a water expansion forming machine for stainless steel pipe production. Summary of the invention

[0005] The object of the present invention is to provide a water expansion forming machine for stainless steel pipe production to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A water swelling forming machine for stainless steel pipe production comprises a frame assembly, the frame assembly comprises a processing platform, a pair of water swelling molds are slidably connected to the side wall of the processing platform, a collecting tank is excavated on the processing platform, a pipe storage frame is arranged on the upper side of the processing platform, a fixing frame is fixedly connected between the pipe storage frame and the processing platform, a cylinder is fixedly connected between the fixing frame and the water swelling mold, a movable valve housing is arranged on both sides of the processing platform, and two telescopic clamping assemblies are fixedly connected to the opposite side walls of the two movable valve housings; The telescopic clamping assembly includes a fixed ring block, two connecting plates are fixedly connected between the fixed ring block and the movable valve housing, a toothed belt ring is rotatably connected inside the fixed ring block, a clamping cylinder is threadedly connected inside the toothed belt ring, a limiting ring block is fixedly connected to one end of the clamping cylinder close to the movable valve housing, a square tube connected to the interior of the movable valve housing is plugged into the clamping cylinder, a sealing plug is slidably connected inside the clamping cylinder, and the square tube is plugged into the sealing plug, a driving tube is arranged between the two fixed ring blocks, the same toothed belt is sleeved between the two toothed belt rings, a toothed belt pulley meshing with the toothed belt is fixedly connected to the driving tube, and a resistance increasing assembly is rotatably connected to the driving tube.

[0007] As a further solution of the present invention, the frame assembly also includes a fixed valve core rotatably connected to the inside of the movable valve housing, a valve hole is drilled inside the fixed valve core, and one side wall of the two fixed valve cores facing each other are fixedly connected with an injection tube rotatably connected to the movable valve housing, and the injection tube is communicated with the valve hole.

[0008] As a further solution of the present invention, the resistance increasing component includes a limiting square rod inserted on the fixed valve core, and a conical block is fixedly connected to one end of the limiting square rod away from the fixed valve core, and a thrust spring is fixedly connected between the conical block and the fixed valve core.

[0009] As a further solution of the present invention, an annular block is slidably connected inside the side wall of the movable valve housing, and moving blocks are fixedly connected to the upper and lower side walls of the annular block, and a return spring is fixedly connected between the moving block and the movable valve housing.

[0010] As a further solution of the present invention, a square box is fixedly connected to the side wall of the movable valve housing, a moving block is slidably connected inside the square box, and the driving tube is threadedly connected to the moving block, and a fixed square rod is rotatably connected inside the driving tube.

[0011] As a further solution of the present invention, the limiting square rod is inserted into the fixed square rod, and the limiting square rod passes through the moving block. The limiting square rod is fixedly connected to a square top plate located on one side of the conical block. Two pull rods fixedly connected to the moving block are inserted on the annular block, and a driving assembly is fixedly connected between the two fixed square rods.

[0012] As a further solution of the present invention, the driving assembly includes a motor box fixedly connected between two fixed square rods, and a dual-axis motor is fixedly connected inside the motor box.

[0013] As a further solution of the present invention, magnetic couplings are fixedly connected between the two output ends of the dual-axis motor and the two driving tubes respectively, and a two-way tube removal assembly is fixedly connected to the upper side wall of the motor box.

[0014] As a further solution of the present invention, the two-way tube removal assembly includes two support rods fixedly connected to the upper side wall of the motor box, and the upper ends of the two support rods are fixedly connected to the same connecting base.

[0015] As a further solution of the present invention, two arc-shaped sliding doors are hinged on the inner side wall of the connecting base, and a torsion spring is fixedly connected between the two arc-shaped sliding doors and the connecting base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the two telescopic clamping assemblies can be continuously switched through the driving assembly, so that the two telescopic clamping assemblies can process the stainless steel pipe alternately, achieving multiple functions such as automatic loading, processing and unloading, without manual operation, reducing safety hazards, and improving the processing efficiency of the existing device for stainless steel pipes.

[0017] 2. When the present invention is used, the resistance-increasing component can be used to improve the stability of the alternating action of the two telescopic clamping components and the clamping action of the two telescopic clamping components on the stainless steel pipe. At the same time, the two-way pipe taking component can be used to achieve a two-way taking action of the stainless steel pipe, thereby complying with the operating action of the telescopic clamping component.

[0018] 3. When the present invention is used, the frame assembly can be used to enable the two water swelling molds to automatically clamp the stainless steel pipe. At the same time, when the two water swelling molds are separated, the shaped stainless steel pipe can also fall off automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional image of a water expansion forming machine for producing stainless steel pipes; Figure 2 It is a structural schematic diagram of a frame assembly in a water expansion forming machine for producing stainless steel pipes; Figure 3 This is a structural schematic diagram of a fixed valve core part in a water expansion forming machine for producing stainless steel pipes; Figure 4 It is a schematic diagram of the structure of the toothed belt pulley part in a water expansion forming machine for producing stainless steel pipes; Figure 5 It is a structural schematic diagram of a telescopic clamping assembly in a water expansion forming machine for producing stainless steel pipes; Figure 6 It is a structural schematic diagram of a resistance-increasing component in a water expansion forming machine for producing stainless steel pipes; Figure 7It is a schematic diagram of the structure of a driving component in a water expansion forming machine for producing stainless steel pipes; Figure 8 This is a schematic diagram of the structure of the motor box part of a water expansion forming machine for stainless steel pipe production; Fig. 9 This is a schematic diagram of the structure of the arc-shaped push-door part of a water expansion forming machine for stainless steel pipe production.

[0020] In the figure: 1. Frame assembly; 101. Processing platform; 102. Water swelling mold; 103. Collecting tank; 104. Fixing frame; 105. Cylinder; 106. Fixed valve core; 107. Valve hole; 108. Moving valve housing; 109. Liquid injection pipe; 2. Depository frame; 3. Telescopic clamping assembly; 301. Fixed ring block; 302. Connecting plate; 303. Toothed belt ring; 304. Clamping tube; 305. Limiting ring block; 306. Square tube; 307. Sealing plug; 308. Driving tube; 309. Toothed belt pulley; 310. Toothed belt; 4. Resistance increasing assembly; 401. Position limiting square rod; 402. Conical block; 403. Thrust spring; 404. Ring block; 405. Moving block; 406. Return spring; 407. Square box; 408. Moving block; 409. Fixed square rod; 410. Square top plate; 411. Pull rod; 5. Driving assembly; 501. Motor box; 502. Dual-axis motor; 503. Magnetic coupling; 6. Two-way tube removal assembly; 601. Support rod; 602. Connecting base; 603. Arc-shaped push door; 604. Torsion spring. DETAILED DESCRIPTION

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

[0022] Example 1: Please refer to Figures 1 to 4In an embodiment of the present invention, a water swelling forming machine for stainless steel pipe production includes a frame assembly 1, the frame assembly 1 includes a processing platform 101, and a pair of water swelling molds 102 are slidably connected to the upper side wall of the processing platform 101 by means of a slide slot clamping connection. When in use, the water swelling molds 102 are pushed by two cylinders 105, so that the two water swelling molds 102 are close to each other, and the stainless steel pipe is squeezed, so that the stainless steel pipe is shaped into a shape that matches the inner wall of the water swelling mold 102. The processing platform 101 is cut with a receiving The collecting trough 103, after the stainless steel pipe is shaped, the stainless steel pipe will fall through the collecting trough 103, a storage frame 2 for storing multiple stainless steel pipes for processing is arranged on the upper side of the processing platform 101, a fixing frame 104 is fixedly connected between the storage frame 2 and the processing platform 101, a cylinder 105 is fixedly connected between the fixing frame 104 and the water swelling mold 102, and a movable valve housing 108 is arranged on both sides of the processing platform 101, and two telescopic clamping components 3 are fixedly connected to the opposite side walls of the two movable valve housings 108; The telescopic clamping assembly 3 includes a fixed ring block 301, and two connecting plates 302 are fixedly connected between the fixed ring block 301 and the movable valve housing 108. The fixed ring block 301 is fixedly connected to the side wall of the movable valve housing 108 through the two connecting plates 302, and the connecting plates 302 are fixedly connected to the upper and lower ends of the fixed ring block 301. The fixed ring block 301 is internally rotatably connected to a toothed belt ring 303 through a bearing, and the toothed belt ring 303 is internally threadedly connected to a clamp 304. The end of the clamp 304 away from the movable valve housing 108 is semicircular, which is convenient for the clamp 304 to push and seal the two ends of the stainless steel pipe, so as to clamp and fix the stainless steel pipe and seal it with water. The limit ring block 305 can limit the clamp 304, and a square tube 306 connected to the inside of the movable valve housing 108 is inserted on the clamp 304. Whenever the movable valve housing 108 rotates 180 degrees, the two square tubes 306 will be switched to be connected to the valve hole 107 in turn. A sealing plug 307 is slidably connected to the inside of the clamp 304, and the square tube 306 is inserted on the sealing plug 307. A driving tube 308 is arranged between the two fixed ring blocks 301, and a same toothed belt 310 is sleeved between the two toothed belt rings 303. A toothed pulley 309 meshing with a toothed belt 310 is fixedly connected to the tube 308, and a resistance increasing component 4 is rotatably connected to the driving tube 308. When the toothed pulley 309 rotates, the toothed belt 310 can drive the two toothed belt rings 303 to rotate, and then the two toothed belt rings 303 respectively drive one of the clamps 304 to extend outward and drive the other clamp 304 to retract inward. When the clamp 304 is extended to the maximum range, the limit ring block 305 will abut against the toothed belt ring 303, and when the clamp 304 is retracted to the maximum range, the limit ring block 305 will abut against the movable valve housing 108. When the toothed belt pulley 309 extends or contracts to the maximum range, it cannot continue to drive the toothed belt ring 303 to rotate through the toothed belt 310, but will drive the entire movable valve housing 108 to rotate through the toothed belt 310. The function of the resistance increasing component 4 is to prevent the toothed belt pulley 309 from rotating and driving the movable valve housing 108 to rotate through the toothed belt 310 when the clamp 304 pushes the stainless steel pipe due to excessive resistance to the pushing of the clamp 304. The resistance increasing component 4 can ensure that the movable valve housing 108 can only rotate when the limit ring block 305 is extended or contracted to the maximum range, thereby improving the stability of the device operation.

[0023] It is worth noting that the thread directions of the two clamps 304 on the movable valve housing 108 on the same side are opposite. When the rotation directions of the two toothed belt rings 303 are the same, the movements of the two clamps 304 are opposite and different, so that the two clamps 304 can achieve that one clamp 304 can clamp the stainless steel pipe while the other clamp 304 can loosen the processed stainless steel pipe to make the stainless steel pipe fall.

[0024] The frame assembly 1 also includes a fixed valve core 106 rotatably connected to the inside of the movable valve housing 108. A sealing ring is fixedly connected to the inner wall of the movable valve housing 108. The sealing ring is not shown in the figure. The sealing ring can effectively prevent liquid from leaking from the gap between the movable valve housing 108 and the fixed valve core 106. A valve hole 107 is opened inside the fixed valve core 106. The two side walls of the two fixed valve cores 106 that are opposite to each other are fixedly connected to an injection pipe 109 rotatably connected to the movable valve housing 108, and the injection pipe 109 is connected to the valve hole 107. The ends of the two injection pipes 109 away from the movable valve housing 108 are connected to a liquid supply device. The liquid supply device can exert water pressure to cause the stainless steel pipe to deform. The structure and principle of the liquid supply device are all existing technologies and will not be repeated here.

[0025] The resistance increasing component 4 includes a limiting square rod 401 inserted on the fixed valve core 106, and the end of the limiting square rod 401 away from the fixed valve core 106 is fixedly connected with a conical block 402, and a plurality of evenly distributed rubber tooth surfaces are fixedly connected to the side wall of the conical block 402, and the inner wall of the annular block 404 is cut with a resistance increasing groove matching the side wall of the conical block 402. When the conical block 402 contacts the annular block 404, the friction force can be increased through the rubber tooth surface, so that the movable valve housing 108 is not easy to rotate, and a thrust spring 403 is fixedly connected between the conical block 402 and the fixed valve core 106, and the inner side wall of the movable valve housing 108 is slidably connected with the annular block 404, and the upper and lower side walls of the annular block 404 are fixedly connected with the moving block 4 05, a return spring 406 is fixedly connected between the moving block 405 and the movable valve housing 108, a square box 407 is fixedly connected to the side wall of the movable valve housing 108, a moving block 408 is slidably connected inside the square box 407, and the end of the driving tube 308 is threadedly connected to the moving block 408, a fixed square rod 409 is rotatably connected inside the driving tube 308, a limiting square rod 401 is inserted into the fixed square rod 409, and the limiting square rod 401 passes through the moving block 405, a square top plate 410 located on one side of the conical block 402 is fixedly connected to the limiting square rod 401, and two pull rods 411 fixedly connected to the moving block 408 are inserted on the annular block 404, and one end of the pull rod 411 is away from the moving block 408 A top block is fixedly connected, and the annular block 404 can be pulled to move by two top blocks. A driving assembly 5 is fixedly connected between the two fixed square rods 409. When the driving tube 308 drives the toothed pulley 309 to rotate, the toothed pulley 309 drives the toothed belt ring 303 to rotate through the toothed belt 310. At the same time, the driving tube 308 also drives the moving block 408 to move. When the limiting ring block 305 is not in the maximum range of extension or contraction, the conical block 402 is attached to the annular block 404 under the thrust of the thrust spring 403, and the annular block 404 is also attached to the conical block 402 under the thrust of the moving block 405, so that the movable valve housing 108 cannot rotate. When the limiting ring block 305 is about to approach the maximum range of contraction, The moving block 408 will drive the square top plate 410 to contact the conical block 402 through the limiting square rod 401. If the driving tube 308 continues to rotate in the same direction at this time, it will drive the square top plate 410 to push the conical block 402, so that the conical block 402 and the annular block 404 are separated. At this time, the movable valve housing 108 is no longer locked and rotates. When the limiting ring block 305 is about to reach the maximum extension range, the moving block 408 will drive the end of the pull rod 411 to contact the side wall of the annular block 404. If the driving tube 308 continues to rotate in the same direction at this time, it will drive the pull rod 411 to pull the annular block 404 to move, so that the conical block 402 and the annular block 404 are separated. At this time, the movable valve housing 108 is also unlocked and rotates normally.

[0026] Example 2: Please refer to Figures 8 to 9Based on Example 1, the driving assembly 5 includes a motor box 501 fixedly connected between two fixed square rods 409, a dual-axis motor 502 is fixedly connected inside the motor box 501, and the dual-axis motor 502 has two output shafts. The structure and principle of the dual-axis motor 502 are both prior art and will not be repeated here. The two output ends of the dual-axis motor 502 are respectively fixedly connected to the two driving tubes 308 with magnetic couplings 503, and the upper side wall of the motor box 501 is fixedly connected to a two-way tube assembly 6. When the dual-axis motor 502 is started, the magnetic coupling 503 will be used to The two driving tubes 308 are driven to rotate, and the motor box 501 is supported and fixed by the fixed square rod 409. To prevent the motor box 501 from rotating, the driving tube 308 can support the fixed square rod 409, and the square top plate 410 inside the fixed square rod 409 is plugged into the fixed valve core 106. The fixed valve core 106 is connected to the liquid supply device through the injection tube 109. Therefore, the fixed valve core 106 is a fixed part. Therefore, the fixed square rod 409 can support the motor box 501, and the two-way tube taking assembly 6 can be supported through the motor box 501.

[0027] The two-way tube taking assembly 6 includes two support rods 601 fixedly connected to the upper side wall of the motor box 501, and the upper ends of the two support rods 601 are fixedly connected to the same connecting base 602. Two arc-shaped push doors 603 are hinged on the inner side wall of the connecting base 602. The arc-shaped push doors 603 do not directly contact the lower end of the tube storage frame 2. A torsion spring 604 is fixedly connected between the two arc-shaped push doors 603 and the connecting base 602. After the two clamps 304 insert and clamp the stainless steel tube, the movable valve housing 108 rotates to make the stainless steel tube slide out directly from one side of the two-way tube taking assembly 6. The stainless steel tube will directly push the arc-shaped push door 603 to open it, and then the arc-shaped push door 603 will automatically reset under the action of the torsion spring 604, and the upper stainless steel tube will also fall down.

[0028] The working principle of the present invention is: When the present invention is in use, first, the staff puts the stainless steel pipe to be processed into the storage frame 2, and then starts the dual-axis motor 502. The dual-axis motor 502 will drive the two driving tubes 308 on both sides thereof to rotate through the magnetic coupling 503. The magnetic coupling 503 can realize contactless driving rotation. The structure and principle of the magnetic coupling 503 are both existing technologies and are not repeated here. The driving tube 308 drives the toothed pulley 309 to rotate, and the toothed pulley 309 drives the two toothed belt rings 303 to rotate through the toothed belt 310, and then drives one of the clamps 304 to extend outward and the other clamp 304 to retract inward through the two toothed belt rings 303. The clamp 304 extending outward will be inserted into the two ends of the stainless steel pipe to be processed, and the clamp 304 retracted inward will retract from the two ends of the processed stainless steel pipe, so that the processed stainless steel pipe falls from the collection tank 103.

[0029] The toothed belt 310 is provided as a toothed belt.

[0030] When the limit ring block 305 is extended or retracted to the maximum range, when the toothed belt pulley 309 continues to rotate in the previous direction, the toothed belt ring 303 cannot be driven to rotate by the toothed belt 310, but the entire movable valve housing 108 will be driven to rotate by the toothed belt 310. The staff can set the program of the dual-axis motor 502 so that after the limit ring block 305 is extended or retracted to the maximum range, it will continue to rotate 180 degrees in the original direction, that is, the movable valve housing 108 is driven to rotate 180 degrees through the driving tube 308, so that the stainless steel pipe to be processed can be rotated to the processing area below; During the rotation of the stainless steel pipe to be processed, the stainless steel pipe will directly push the arc-shaped push door 603 to open, so that the stainless steel pipe slides out from one side of the two-way pipe taking assembly 6, and then the arc-shaped push door 603 will automatically reset under the action of the torsion spring 604, and the previous stainless steel pipe will also fall down; After the stainless steel pipe to be processed can be rotated to the processing area below, the two cylinders 105 push the water swelling mold 102, so that the two water swelling molds 102 are close to each other and squeeze the stainless steel pipe. At the same time, the square tube 306 below is connected to the injection pipe 109 through the valve hole 107. Through the liquid supply device on the injection pipe 109, the liquid can be injected into the stainless steel pipe through the clamp 304, so that the stainless steel pipe is shaped into a shape consistent with the inner wall of the water swelling mold 102. Then the cylinder 105 pulls the water swelling mold 102 to reset, and at the same time the double-axis motor 502 drives the driving tube 308 to rotate in the opposite direction until the lower limiting ring block 305 shrinks to the maximum range, and the limiting ring block 305 is pulled out from both ends of the shaped stainless steel pipe, so that the stainless steel pipe falls from the collecting tank 103, and then the double-axis motor 502 continues to rotate 180 degrees in the original direction, and drives the driving valve housing 108 to rotate again through the driving tube 308, and rotates the clamp 304 that clamps the stainless steel pipe to be processed to the processing area below, and repeats the above steps; In addition, in order to prevent the clamp 304 from pushing the stainless steel pipe due to excessive resistance of the clamp 304, which causes the toothed belt pulley 309 to rotate and drive the movable valve housing 108 to rotate through the toothed belt 310, the resistance increasing component 4 can achieve the stability of the rotation of the movable valve housing 108. The working principle of the resistance increasing component 4 is as follows: When the driving tube 308 drives the toothed pulley 309 to rotate, the toothed pulley 309 drives the toothed belt ring 303 to rotate through the toothed belt 310, and the driving tube 308 also drives the moving block 408 to move. When the limiting ring block 305 is not in the maximum range of extension or contraction, the conical block 402 is attached to the annular block 404 under the thrust of the thrust spring 403, and the annular block 404 is also attached to the conical block 402 under the thrust of the moving block 405, so that the movable valve housing 108 cannot rotate. When the limiting ring block 305 is about to approach the maximum range of contraction, the moving block 408 drives the square top plate 41 through the limiting square rod 401. 0 contacts with the conical block 402. If the driving tube 308 continues to rotate in the same direction at this time, it will drive the square top plate 410 to push the conical block 402, so that the conical block 402 and the annular block 404 are separated. At this time, the movable valve housing 108 is no longer locked and rotates. When the limiting ring block 305 is about to reach the maximum extension range, the moving block 408 will drive the end of the pull rod 411 to contact the side wall of the annular block 404. If the driving tube 308 continues to rotate in the same direction at this time, it will drive the pull rod 411 to pull the annular block 404 to move, so that the conical block 402 and the annular block 404 are separated. At this time, the movable valve housing 108 is also unlocked and rotates normally.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water expansion forming machine for stainless steel pipe production, comprising a frame assembly (1), characterized in that: The frame assembly (1) comprises a processing platform (101), a pair of water swelling molds (102) are slidably connected to the upper side wall of the processing platform (101), a collecting groove (103) is excavated on the processing platform (101), a tube storage frame (2) is arranged on the upper side of the processing platform (101), a fixing frame (104) is fixedly connected between the tube storage frame (2) and the processing platform (101), a cylinder (105) is fixedly connected between the fixing frame (104) and the water swelling mold (102), and movable valve housings (108) are arranged on the left and right sides of the processing platform (101), and two telescopic clamping assemblies (3) are fixedly connected to the opposite side walls of the two movable valve housings (108); The telescopic clamping assembly (3) comprises a fixed ring block (301), two connecting plates (302) are fixedly connected between the fixed ring block (301) and the movable valve housing (108), a toothed belt ring (303) is rotatably connected inside the fixed ring block (301), a clamping sleeve (304) is threadedly connected inside the toothed belt ring (303), one end of the clamping sleeve (304) close to the movable valve housing (108) is fixedly connected to a limit ring block (305), and a plug is inserted on the clamping sleeve (304) which is connected to the inside of the movable valve housing (108). A square tube (306) is connected to the clamp (304), a sealing plug (307) is slidably connected inside the clamp (304), and the square tube (306) is plugged into the sealing plug (307), a driving tube (308) is arranged between the two fixed ring blocks (301), a same toothed belt (310) is sleeved between the two toothed belt rings (303), a toothed belt pulley (309) meshing with the toothed belt (310) is fixedly connected to the driving tube (308), and a resistance increasing component (4) is rotatably connected to the driving tube (308).

2. A water expansion forming machine for stainless steel pipe production according to claim 1, characterized in that: The frame assembly (1) further comprises a fixed valve core (106) rotatably connected to the interior of the movable valve housing (108), a valve hole (107) being bored inside the fixed valve core (106), two side walls of the fixed valve core (106) facing away from each other are fixedly connected to injection pipes (109) rotatably connected to the movable valve housing (108), and the injection pipes (109) are in communication with the valve hole (107).

3. A water expansion forming machine for stainless steel pipe production according to claim 1, characterized in that: The resistance increasing assembly (4) comprises a limiting square rod (401) plugged into the fixed valve core (106), one end of the limiting square rod (401) away from the fixed valve core (106) being fixedly connected to a conical block (402), and a thrust spring (403) being fixedly connected between the conical block (402) and the fixed valve core (106).

4. A water expansion forming machine for stainless steel pipe production according to claim 3, characterized in that: An annular block (404) is slidably connected to the inner side wall of the movable valve housing (108), a shifting block (405) is fixedly connected to both upper and lower side walls of the annular block (404), and a return spring (406) is fixedly connected between the shifting block (405) and the movable valve housing (108).

5. A water expansion forming machine for stainless steel pipe production according to claim 4, characterized in that: A square box (407) is fixedly connected to the side wall of the movable valve housing (108), a moving block (408) is slidably connected inside the square box (407), a driving tube (308) is threadedly connected to the moving block (408), and a fixed square rod (409) is rotatably connected inside the driving tube (308).

6. A water expansion forming machine for stainless steel pipe production according to claim 5, characterized in that: The limiting square rod (401) is inserted into the fixed square rod (409), and the limiting square rod (401) passes through the moving block (405); the limiting square rod (401) is fixedly connected to a square top plate (410) located on one side of the conical block (402); two pull rods (411) fixedly connected to the moving block (408) are inserted into the annular block (404); and a driving assembly (5) is fixedly connected between the two fixed square rods (409).

7. A water expansion forming machine for stainless steel pipe production according to claim 6, characterized in that: The driving assembly (5) comprises a motor box (501) fixedly connected between two fixed square rods (409), and a dual-axis motor (502) is fixedly connected inside the motor box (501).

8. A water expansion forming machine for stainless steel pipe production according to claim 7, characterized in that: A magnetic coupling (503) is fixedly connected between the two output ends of the dual-axis motor (502) and the two drive tubes (308), respectively, and a bidirectional tube removal assembly (6) is fixedly connected to the upper side wall of the motor box (501).

9. A water expansion forming machine for stainless steel pipe production according to claim 8, characterized in that: The bidirectional tube extraction assembly (6) comprises two support rods (601) fixedly connected to the upper side wall of the motor box (501), and the upper ends of the two support rods (601) are fixedly connected to the same connecting base (602).

10. A water expansion forming machine for stainless steel pipe production according to claim 9, characterized in that: Two arc-shaped push doors (603) are hingedly connected to the inner side wall of the connecting base (602), and a torsion spring (604) is fixedly connected between the two arc-shaped push doors (603) and the connecting base (602).

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