Diameter expanding treatment device for stainless steel reducer pipe manufacturing and diameter expanding method

Abstract

The invention relates to the field of pipeline machining, and particularly discloses a diameter expanding treatment device for stainless steel reducer pipe manufacturing and a diameter expanding method.The diameter expanding treatment device comprises a supporting frame, a clamping device used for clamping a stainless steel pipe is arranged on the supporting frame, a spinning assembly is arranged on the supporting frame, and a supporting block is arranged on the spinning assembly; a diameter expanding assembly is arranged on the supporting block, and a heating assembly is arranged on the spinning assembly. According to the device, the heating spinning expanding effect on the stainless steel pipe can be achieved, when the stainless steel pipe is expanded, the heating temperature can be automatically adjusted according to the plastic deformation temperature of the stainless steel pipe, workers do not need to adjust the heating temperature in a matched mode, the phenomenon that the stainless steel pipe is broken and damaged is avoided, expanding operation on the stainless steel pipe is facilitated, and the production efficiency is improved. The machining difficulty is reduced, the machining efficiency is improved, meanwhile, protection of the stainless steel pipe is facilitated, the diameter expanding consistency of the stainless steel pipe is improved, and the diameter expanding effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, and particularly to a diameter-expanding treatment device and a diameter-expanding method for manufacturing a stainless steel reducing pipe. Background Art

[0002] A stainless steel reducing pipe is a fitting used to connect pipes with different diameters. In a pipe system, it plays a role in adjusting the pipe diameter. One end of the pipe fitting matches the diameter of one section of the pipe, and the other end matches another section of the pipe with a different diameter, thereby realizing the change in the pipe diameter during the fluid transmission process to meet the fluid transportation requirements. The stainless steel reducing pipe has advantages such as corrosion resistance and high temperature resistance and is widely used in multiple fields. During the manufacturing process of the stainless steel reducing pipe, it is necessary to expand one or both ends of the pipe to the required size through diameter-expanding treatment.

[0003] In the existing patent CN115069912A, a pipe diameter-expanding device is disclosed, which includes a pipe limiting component, a pipe loading and unloading component, a pipe conveying component, and a pipe processing component; the pipe limiting component includes a plurality of first adjusting frames arranged in parallel on the ground; the first adjusting frame, the connecting frame, and the second adjusting frame form a "C" - shaped structure. On the opposite side walls of each first adjusting frame and the second adjusting frame, there are horizontally displaceable limiting telescopic rods, and at the opposite ends of the two groups of limiting telescopic rods, there are clamping plates vertically arranged for clamping and limiting the side wall of the pipe; it is convenient to expand the diameter of pipes with different specifications; when the diameter-expanding disc rotates, it drives the diameter-expanding block to rotate and uniformly expands the pipe, so that the pipe diameter radian is uniform.

[0004] In the above structure, the heating and diameter-expanding operation of the pipe can be realized. However, when heating a stainless steel pipe, since the stainless steel pipe needs to go through processes such as quenching, tempering, annealing, and normalizing during production and has relatively high requirements for temperature, after the product is formed, there will be a large temperature difference in plastic deformation for each section of the stainless steel pipe. That is, when heating and expanding the diameter of the stainless steel pipe, there will be differences in temperature requirements. When the heating temperature does not match the plastic deformation temperature, it is necessary for the staff to adjust the temperature to experiment and match, making it difficult to push the diameter-expanding device to expand the diameter of the stainless steel pipe. Even, the stainless steel pipe may break. It is impossible to automatically adjust the heating temperature according to the plastic deformation temperature of the stainless steel pipe, which is not conducive to the diameter-expanding operation of the stainless steel pipe, increases the processing difficulty, reduces the processing efficiency, is not conducive to the protection of the stainless steel pipe, easily causes damage to the pipe material, reduces the diameter-expanding consistency of the stainless steel pipe, and reduces the diameter-expanding effect.

[0005] Therefore, how to provide a diameter-expanding treatment device and a diameter-expanding method for manufacturing a stainless steel reducing pipe is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] One object of the present invention is to provide a diameter expansion processing device and a diameter expansion method for manufacturing a stainless steel reducer tube. The diameter expansion processing device for manufacturing a stainless steel reducer tube described in the present invention comprises a support frame, the support frame is provided with a clamping device for clamping the stainless steel tube, the support frame is provided with a spinning assembly, the spinning assembly is provided with a support block, the support block is provided with an expansion assembly, the spinning assembly is provided with a heating assembly, a transmission assembly is provided between the support frame and the spinning assembly, a toggle assembly connected to the transmission assembly is provided on the support frame, a tightening assembly connected to the toggle assembly is provided on the support frame, and the support A delay component connected to the tightening component is provided on the frame, and an adjustment component electrically connected to the heating component is provided on the support frame, and the adjustment component is used to adjust the heating component; wherein, when the spinning component moves normally, the movement of the transmission component forces the toggle component to drive the tightening component to reciprocate normally, and due to the delayed movement of the delay component, the delay component is forced not to move; when the spinning component cannot be spun, the transmission component does not move, so that the toggle component and the tightening component are not in contact, and the delay component drives the tightening component and the adjustment component to move, thereby realizing the adjustment effect on the heating component.

[0007] Preferably, the spinning assembly includes a hydraulic push rod installed on the support frame, the output end bearing of the hydraulic push rod is connected to a rotating column connected to the support block, the output end of the hydraulic push rod is installed with a rotating motor, the output shaft of the rotating motor is connected to a driving gear, and the outer ring fixing sleeve of the rotating column is provided with a driven gear meshing with the driving gear.

[0008] Preferably, the expansion assembly includes an expansion motor installed on the support block, the output shaft of the expansion motor is connected to a rotating gear, a plurality of expansion blocks are arranged in the support block, an expansion gear meshing with the rotating gear is arranged in the support block, the expansion gear and the rotating gear are both connected to the support block by bearings, and an expansion spur rack meshing with the expansion gear is arranged on the expansion block.

[0009] Preferably, the heating assembly comprises a support rod arranged at the output end of the hydraulic push rod, the support rod is provided with a support ring, the support ring is provided with a connecting rod, and the connecting rod is installed with an electric heating ring for heating.

[0010] Preferably, the transmission assembly includes a transmission gear connected to the support frame by a bearing, a connecting plate is provided on the support ring, and a transmission spur rack meshing with the transmission gear is provided on the connecting plate.

[0011] Preferably, the toggle assembly includes a fixed plate arranged on the support frame, a rotating ring is connected to a bearing on the fixed plate, a pin meshing with the transmission gear is provided on the rotating ring, a toggle spring is provided between the pin and the fixed plate, a tilting rod is provided on the rotating ring, and a fan-shaped toggle tooth is provided on the tilting rod.

[0012] Preferably, the tightening assembly includes a mounting plate arranged on the support frame, a mounting box is arranged on the mounting plate, a tightening shaft is connected to the bearing on the mounting plate, a coil spring is arranged on the tightening shaft and is located inside the mounting box, and a tightening gear meshing with the fan-shaped driving teeth is arranged on the tightening shaft.

[0013] Preferably, the delay assembly includes a storage cylinder arranged on the support frame, a delay piston is arranged in the storage cylinder, a sliding rod is arranged on the delay piston and passes through the storage cylinder, a baffle connected to the output end of the coil spring is arranged on the sliding rod, a delay spring sleeved on the outer ring of the sliding rod is arranged between the baffle and the storage cylinder, a delay cylinder is arranged on the support frame, an air inlet pipe and an air outlet pipe are arranged on the delay cylinder, the diameter of the air inlet pipe is smaller than the diameter of the air outlet pipe, and the delay cylinder is connected to the storage cylinder through the air inlet pipe and the air outlet pipe.

[0014] Preferably, the adjustment component includes a resistor bar arranged on the support frame, an adjustment rod is arranged on the baffle, a dynamic contact ring adapted to the resistor bar is arranged on the adjustment rod, and a static contact ring is arranged on the resistor bar, and the resistor bar is connected in series in the circuit of the electric heating coil through the dynamic contact ring and the static contact ring.

[0015] A diameter expansion method for a diameter expansion processing device for manufacturing stainless steel reducer pipes is also proposed, wherein the stainless steel pipe is clamped by the support frame and the clamping device, the heating component is connected to a power source, and the stainless steel pipe is heated by the heating component. Under normal circumstances, the spinning component is started to force the spinning component to enter the stainless steel pipe. During diameter expansion, the diameter of the diameter expansion component is forced to expand slowly, and at the same time, the spinning component continuously advances and rotates, so that the diameter expansion component performs diameter expansion processing on the stainless steel pipe. At the same time, the transmission gear continuously rotates, forcing the tilting rod to continuously move the fan-shaped moving teeth back and forth, so that the tightening gear continuously moves back and forth, so that the coil spring is retracted and released back and forth. Due to the delay effect of the delay component, when the delay component has no time to act, the coil spring is continuously retracted and released back and forth, forcing the delay component not to drive The adjusting component moves, so that the resistance of the circuit connected to the adjusting component does not change until the diameter expansion operation of the stainless steel tube is completed; due to the different thermoplasticity of stainless steel tubes, when the heating temperature of the heating component is not enough, the spinning component will be unable to move forward. At this time, the spinning component will stop, forcing the transmission component not to move, so that the transmission gear engages with the latch, so that the fan-shaped toggle gear and the tightening gear are in a separated state, so that the coil spring is released, and the delay component will move slowly at this time, so that the delay component retreats, and the baffle drives the adjusting rod to retreat, so that the moving contact ring moves, forcing the resistance value of the circuit connected to the resistor bar to decrease, thereby increasing the current, forcing the heating component to generate a higher heating temperature until the spinning component continues to move forward to expand the stainless steel tube.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention positions a stainless - steel pipe, uses a clamping device to adjust the stainless - steel pipe so that the stainless - steel pipe is adjusted to a reasonable position, forces the stainless - steel pipe to align with the center of the clamping device, uses a support frame and the clamping device to clamp the stainless - steel pipe, connects the heating component to the power supply, and uses the heating component to heat - treat the part corresponding to the diameter - expansion of the pipe orifice of the stainless - steel pipe. Normally, the spinning component is started, forcing the spinning component to enter the stainless - steel pipe. During diameter - expansion, the diameter of the diameter - expansion component is forced to slowly expand, and at the same time, the spinning component continuously advances and rotates, so that the diameter - expansion component expands the diameter of the stainless - steel pipe. At the same time, under the action of the transmission component, the toggling component is forced to perform a reciprocating motion, so that the tightening component continuously performs a reciprocating motion, causing the tightening component to reciprocally take in and release. Due to the self - action of the tightening component and the delay action of the delay component, when the delay component has not had time to act, the tightening component reciprocates back and forth continuously, forcing the delay component not to drive the adjustment component to move, so that the resistance of the adjustment component connected to the circuit does not change until the diameter - expansion operation of the stainless - steel pipe is completed; During the diameter - expansion process, due to the different thermoplastic properties of the stainless - steel pipe, when the heating temperature of the heating component is insufficient, since the pipe orifice of the stainless - steel pipe is difficult to deform, the spinning component cannot rotate and cannot advance. At this time, the spinning component stops, forcing the transmission component not to act, causing the transmission component and the toggling component to form a clamping connection, making the toggling component and the tightening component in a separated state, releasing the tightening component. At this time, the delay component will perform a slow action, causing the delay component to retract, and the delay component drives the adjustment component to move, so that the resistance value of the adjustment component connected to the circuit decreases, thereby increasing the current in the circuit, forcing the heating component to generate a higher heating temperature, causing the stainless - steel pipe to deform until the spinning component continues to advance to expand the diameter of the stainless - steel pipe; In summary, a diameter - expansion treatment device for manufacturing a stainless - steel variable - diameter pipe of the present application can achieve the effect of heating and spinning - expanding a stainless - steel pipe. When expanding the diameter of the stainless - steel pipe, it can automatically adjust the heating temperature according to the plastic deformation temperature of the stainless - steel pipe, without the need for staff to match and adjust the heating temperature, avoiding the phenomenon that the stainless - steel pipe breaks and is damaged, facilitating the diameter - expansion operation of the stainless - steel pipe, reducing the processing difficulty, improving the processing efficiency, and at the same time facilitating the protection of the stainless - steel pipe, improving the diameter - expansion consistency of the stainless - steel pipe, and improving the diameter - expansion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a three - dimensional structural solid diagram of the present invention;

[0020] Figure 2 is a partial structural solid diagram of the present invention;

[0021] Figure 3 It is a structural entity diagram of the spinning assembly of the present invention;

[0022] Figure 4 It is a structural entity diagram of the diameter expansion assembly of the present invention;

[0023] Figure 5 A structural entity diagram of the heating assembly of the present invention;

[0024] Figure 6 It is a front view of the transmission assembly of the present invention;

[0025] Figure 7 It is a front view of the toggle assembly of the present invention;

[0026] Figure 8 It is a structural entity diagram of the tightening assembly of the present invention;

[0027] Figure 9 A diagram showing the connection relationship between the delay component and the adjustment component of the present invention;

[0028] Figure 10 A partial structural physical diagram of the delay component of the present invention.

[0029] In the figure: 1, support frame; 2, clamping device; 3, spinning assembly; 301, hydraulic push rod; 302, rotating column; 303, rotating motor; 304, driving gear; 305, driven gear; 4, support block; 5, expansion assembly; 501, expansion motor; 502, rotating gear; 503, expansion block; 504, expansion gear; 505, expansion spur rack; 6, heating assembly; 601, support rod; 602, support ring; 603, connecting rod; 604, electric heating ring; 7, transmission assembly; 701, transmission gear; 702, connecting plate; 703, transmission spur rack; 8, toggle assembly; 801, fixed plate; 8 02. Rotating ring; 803. Latch; 804. Toggle spring; 805. Tilt rod; 806. Fan-shaped toggle tooth; 9. Tightening assembly; 901. Mounting plate; 902. Mounting box; 903. Tightening shaft; 904. Coil spring; 905. Tightening gear; 10. Delay assembly; 1001. Storage cylinder; 1002. Delay piston; 1003. Sliding rod; 1004. Baffle; 1005. Delay spring; 1006. Delay cylinder; 1007. Inlet pipe; 1008. Outlet pipe; 11. Adjustment assembly; 1101. Resistance bar; 1102. Adjustment rod; 1103. Dynamic contact ring; 1104. Static contact ring. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] Embodiment 1:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a diameter expansion processing device for manufacturing a stainless steel reducer tube of the present invention comprises a support frame 1, a clamping device 2 for clamping a stainless steel tube is arranged on the support frame 1, a spinning assembly 3 is arranged on the support frame 1, a support block 4 is arranged on the spinning assembly 3, an expanding assembly 5 is arranged on the support block 4, a heating assembly 6 is arranged on the spinning assembly 3, a transmission assembly 7 is arranged between the support frame 1 and the spinning assembly 3, a toggle assembly 8 connected to the transmission assembly 7 is arranged on the support frame 1, a tightening assembly 9 connected to the toggle assembly 8 is arranged on the support frame 1, and a A delay component 10 is provided on the support frame 1 with an adjustment component 11 electrically connected to the heating component 6, and the adjustment component 11 is used to adjust the heating component 6; wherein, when the spinning component 3 moves normally, the transmission component 7 moves to force the toggle component 8 to drive the tightening component 9 to reciprocate normally, and due to the delayed movement of the delay component 10, the delay component 10 is forced not to move; when the spinning component 3 cannot be spun, the transmission component 7 does not move, so that the toggle component 8 and the tightening component 9 are not in contact, and the delay component 10 drives the tightening component 9 and the adjustment component 11 to move, thereby realizing the adjustment effect on the heating component 6.

[0033] Working principle: Position the stainless steel pipe, use the clamping device 2 to adjust the stainless steel pipe to a reasonable position, force the stainless steel pipe to align with the center of the clamping device 2, use the support frame 1 and the clamping device 2 to clamp the stainless steel pipe, connect the heating component 6 to the power supply, and use the heating component 6 to heat the part of the stainless steel pipe corresponding to the expanded diameter. When normal, start the spinning component 3 to force the spinning component 3 to enter the stainless steel pipe. When expanding the diameter, the diameter of the expansion component 5 is forced to expand slowly. At the same time, the spinning component 3 continues to move forward and rotate, so that the expansion component 5 expands the diameter of the stainless steel pipe. At the same time, under the action of the transmission component 7, the toggle component 8 is forced to reciprocate, so that the tightening component 9 is continuously reciprocating, so that the tightening component 9 is retracted and released back and forth. Due to the self-action of the tightening component 9 and the delay action of the delay component 10, the delay component 10 is forced to not drive the adjustment component 11 to move, so that the resistance of the adjustment component 11 connected to the circuit does not change until the diameter expansion operation of the stainless steel pipe is completed; in the process of diameter expansion, due to the different thermoplasticity of the stainless steel pipe, when the heating temperature of the heating component 6 is When the degree is not enough, since the stainless steel pipe mouth is difficult to deform, the spinning component 3 cannot rotate and cannot move forward. At this time, the spinning component 3 will stop, forcing the transmission component 7 not to move, so that the transmission component 7 and the toggle component 8 are connected, so that the toggle component 8 and the tightening component 9 are in a separated state, so that the tightening component 9 is released, and the delay component 10 will move slowly, so that the delay component 10 retreats, and the delay component 10 drives the adjustment component 11 to move, so that the resistance value of the adjustment component 11 connected to the circuit is reduced, thereby increasing the current in the circuit, forcing the heating component 6 to generate a higher heating temperature, so that The stainless steel tube is deformed until the spinning component 3 continues to move forward to expand the diameter of the stainless steel tube. In summary, a diameter expansion processing device for manufacturing a stainless steel variable diameter tube of the present application can achieve the effect of heating and spinning to expand the diameter of the stainless steel tube. When expanding the diameter of the stainless steel tube, the heating temperature can be automatically adjusted according to the plastic deformation temperature of the stainless steel tube. There is no need for the staff to match and adjust the heating temperature, thereby avoiding the phenomenon of the stainless steel tube being broken and damaged. It is beneficial to the diameter expansion operation of the stainless steel tube, reduces the processing difficulty, improves the processing efficiency, and is also beneficial to the protection of the stainless steel tube, improves the diameter expansion consistency of the stainless steel tube, and improves the diameter expansion effect.

[0034] Embodiment 2:

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 ,Figure 9 and Figure 10 As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , an expanding diameter processing device for manufacturing a stainless steel reducing pipe according to the present invention, the spinning assembly 3 includes a hydraulic push rod 301 installed on the support frame 1. The output end of the hydraulic push rod 301 is connected to a rotating column 302 connected to the support block 4 by a bearing. A rotating motor 303 is installed at the output end of the hydraulic push rod 301. The output shaft of the rotating motor 303 is connected to a driving gear 304. A driven gear 305 meshing with the driving gear 304 is fixedly sleeved on the outer circle of the rotating column 302.

[0036] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , an expanding diameter processing device for manufacturing a stainless steel reducing pipe according to the present invention, the expanding diameter assembly 5 includes an expanding diameter motor 501 installed on the support block 4. The output shaft of the expanding diameter motor 501 is connected to a rotating gear 502. A plurality of expanding diameter blocks 503 are arranged in the support block 4. An expanding diameter gear 504 meshing with the rotating gear 502 is arranged in the support block 4. Both the expanding diameter gear 504 and the rotating gear 502 are connected to the support block 4 by bearings. An expanding diameter straight rack 505 meshing with the expanding diameter gear 504 is arranged on the expanding diameter block 503.

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , an expanding diameter processing device for manufacturing a stainless steel reducing pipe according to the present invention, the heating assembly 6 includes a support rod 601 arranged at the output end of the hydraulic push rod 301. A support ring 602 is arranged on the support rod 601. A connecting rod 603 is arranged on the support ring 602. An electric heating coil 604 for heating is installed on the connecting rod 603.

[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, a diameter expansion processing device for manufacturing a stainless steel reducer pipe of the present invention, the transmission assembly 7 includes a transmission gear 701 connected to a support frame 1 by a bearing, a connecting plate 702 is provided on the support ring 602, and a transmission spur rack 703 meshing with the transmission gear 701 is provided on the connecting plate 702.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a diameter expansion processing device for manufacturing a stainless steel reducer pipe of the present invention, the toggle assembly 8 includes a fixed plate 801 arranged on a support frame 1, a rotating ring 802 is connected to a bearing on the fixed plate 801, a latch 803 meshing with a transmission gear 701 is arranged on the rotating ring 802, a toggle spring 804 is arranged between the latch 803 and the fixed plate 801, a tilting rod 805 is arranged on the rotating ring 802, and a fan-shaped toggle tooth 806 is arranged on the tilting rod 805.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a diameter expansion processing device for manufacturing a stainless steel reducer pipe of the present invention, a tightening assembly 9 includes a mounting plate 901 arranged on a support frame 1, a mounting box 902 is arranged on the mounting plate 901, a tightening shaft 903 is connected to the bearing on the mounting plate 901, a coil spring 904 is arranged on the tightening shaft 903 and located in the mounting box 902, and a tightening gear 905 meshing with the fan-shaped shifting tooth 806 is arranged on the tightening shaft 903.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown in the figure, a diameter-expanding processing device for manufacturing a stainless steel variable-diameter pipe according to the present invention, the delay assembly 10 includes a storage cylinder 1001 provided on the support frame 1. A delay piston 1002 is arranged inside the storage cylinder 1001. A sliding rod 1003 penetrating through the storage cylinder 1001 is arranged on the delay piston 1002. A baffle 1004 connected to the output end of the coil spring 904 is arranged on the sliding rod 1003. A delay spring 1005 sleeved on the outer circle of the sliding rod 1003 is arranged between the baffle 1004 and the storage cylinder 1001. A delay cylinder 1006 is arranged on the support frame 1. An air inlet pipe 1007 and an air outlet pipe 1008 are arranged on the delay cylinder 1006. The diameter of the air inlet pipe 1007 is smaller than that of the air outlet pipe 1008. The delay cylinder 1006 is communicated with the storage cylinder 1001 through the air inlet pipe 1007 and the air outlet pipe 1008.

[0042] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in the figure, a diameter-expanding processing device for manufacturing a stainless steel variable-diameter pipe according to the present invention, the adjustment assembly 11 includes a resistance strip 1101 provided on the support frame 1. An adjustment rod 1102 is arranged on the baffle 1004. A moving contact ring 1103 adapted to the resistance strip 1101 is arranged on the adjustment rod 1102. A static contact ring 1104 is arranged on the resistance strip 1101. The resistance strip 1101 is connected in series in the circuit of the electric heating coil 604 through the moving contact ring 1103 and the static contact ring 1104.

[0043] Working principle: Position the stainless steel pipe, use the clamping device 2 to adjust the stainless steel pipe so that the stainless steel pipe is adjusted to a reasonable position, forcing the stainless steel pipe to be aligned with the center of the clamping device 2, and use the support frame 1 and the clamping device 2 to clamp the stainless steel pipe. The clamping device 2 is an existing technology;

[0044] Connect the power supply to the electric heating coil 604, and use the electric heating coil 604 to heat the part of the stainless steel pipe corresponding to the expanded diameter at the pipe orifice. Normally, start the hydraulic push rod 301. The output end of the hydraulic push rod 301 drives the rotating column 302 and the support block 4 to move forward, so that the rotating motor 303, the driving gear 304, the driven gear 305 and the expanding block 503 move forward, so that the support block 4 and the expanding block 503 enter the pipe orifice of the stainless steel pipe. At the same time, start the rotating motor 303. The output shaft of the rotating motor 303 rotates to drive the driving gear 304 to rotate. The driving gear 304 rotates to drive the driven gear 305 to rotate. The driven gear 305 rotates to drive the rotating column 302 to rotate. The rotating column 302 rotates to drive the support block 4 to rotate. The support block 4 drives the expanding block 503 to rotate;

[0045] When expanding the diameter, start the expanding motor 501. The output shaft of the expanding motor 501 rotates to drive the rotating gear 502 to rotate. The rotating gear 502 drives the expanding gear 504 to rotate. The expanding gear 504 drives the expanding straight rack 505 to move, so that the expanding straight rack 505 drives the expanding block 503 to move, forcing the expanding block 503 to slowly extend from the support block 4, so that the diameter of the expanding block 503 gradually increases. Since the expanding block 503 rotates continuously and moves forward at the same time, and the output end of the hydraulic push rod 301 drives the support rod 601, the support ring 602, the connecting rod 603 and the electric heating coil 604 to move synchronously, so that the electric heating coil 604 precisely heats the part of the stainless steel pipe where the diameter is expanded, so that the expanding block 503 expands the diameter of the stainless steel pipe until the diameter of the stainless steel pipe reaches the required diameter, completing the heating and spinning expansion operation of the stainless steel pipe;

[0046] At the same time, due to the continuous forward movement of the hydraulic push rod 301, the output end of the hydraulic push rod 301 drives the connecting plate 702 to move forward. The connecting plate 702 drives the transmission straight rack 703 to move forward, so that the transmission straight rack 703 drives the transmission gear 701 to rotate counterclockwise. When the transmission gear 701 meshes with the pin 803, the transmission gear 701 rotates to drive the pin 803 to move counterclockwise, stretching the toggle spring 804. Until the pin 803 disengages from the transmission gear 701, under the action of the toggle spring 804, the pin 803 is forced to mesh with the next tooth of the transmission gear 701 again. During the reciprocating movement of the pin 803, the pin 803 drives the rotating ring 802 to rotate, so that the inclined rod 805 drives the sector toggle tooth 806 to toggle the tightening gear 905 to rotate back and forth; At this time, the tightening gear 905 drives the tightening shaft 903 to reciprocate back and forth, forcing the tightening shaft 903 to tighten or release the coil spring 904;

[0047] During the release of coil spring 904, baffle 1004 and delay spring 1005 would have retreated. However, the gas in storage cylinder 1001 enters delay cylinder 1006 through intake pipe 1007, and the gas in delay cylinder 1006 enters storage cylinder 1001 through outlet pipe 1008. The diameter of intake pipe 1007 is much smaller than the diameter of outlet pipe 1008. As a result, the gas in storage cylinder 1001 will not enter delay cylinder 1006 instantly, resulting in a delay effect, i.e., delay piston 1002 and sliding rod 1003 in storage cylinder 1001 will not have time to enter. When the coil spring 904 is in motion, it is tightened again, so that in the reciprocating process of tightening and releasing the coil spring 904, the baffle 1004, the sliding rod 1003 and the delay piston 1002 do not move, so that the baffle 1004 does not drive the adjustment rod 1102 to move, so that the distance between the dynamic contact ring 1103 and the static contact ring 1104 does not change, that is, the resistance of the resistor bar 1101 connected to the circuit does not change. Therefore, during the process of the electric heating coil 604 heating the pipe mouth of the stainless steel pipe, it is ensured that the heating temperature does not change, and the stability of the device is improved until the diameter expansion operation of the stainless steel pipe is completed;

[0048] During the expansion process, due to the different thermoplasticity of the stainless steel pipe, when the heating temperature of the electric heating ring 604 is not enough, the mouth of the stainless steel pipe is difficult to deform, which will cause the rotating motor 303 to be unable to rotate and the hydraulic push rod 301 to be unable to move forward. The system analyzes the situation and forces the rotating motor 303 and the hydraulic push rod 301 to stop. Since the output end of the hydraulic push rod 301 does not move forward, the connecting plate 702, the transmission spur rack 703 and the transmission gear 701 do not move. The transmission gear 701 will mesh with the latch 803 to form a card connection, causing the rotating ring 802 and the tilting rod 805 to not move, and the fan-shaped toggle tooth 806 to not move. At this time, the fan-shaped toggle tooth 806 and the tightening gear 905 are in a separated state, so the tightening gear 905, the tightening shaft 903 and the coil spring 904 are released;

[0049] At this time, under the action of the intake pipe 1007, the gas in the storage cylinder 1001 slowly enters the delay cylinder 1006, causing the gas in the storage cylinder 1001 to gradually decrease. As a result, the delay piston 1002 retracts, forcing the sliding rod 1003 to drive the baffle 1004 to retract. The baffle 1004 drives the release of the coil spring 904, causing the coil spring 904 to move synchronously. The movement of the baffle 1004 drives the movement of the adjusting rod 1102, and the adjusting rod 1102 drives the moving contact ring 1103 to slide on the resistance strip 1101, reducing the distance between the moving contact ring 1103 and the static contact ring 1104. That is, the resistance value of the resistance strip 1101 connected to the circuit decreases, thereby increasing the current in the circuit and forcing the electric heating coil 604 to generate a higher heating temperature, causing the stainless steel pipe to deform until the rotary motor 303 rotates normally and the hydraulic push rod 301 advances normally, and then continuing to heat and spin-expand the stainless steel pipe.

[0050] Embodiment Three:

[0051] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, the present invention proposes a diameter expansion method for a diameter expansion processing device for manufacturing a stainless steel variable diameter pipe, wherein a support frame 1 and a clamping device 2 are used to clamp the stainless steel pipe, a heating component 6 is connected to a power source, and the stainless steel pipe is heated by the heating component 6. Under normal circumstances, the spinning component 3 is started to force the spinning component 3 to enter the stainless steel pipe. During the diameter expansion, the diameter of the diameter expansion component 5 is forced to slowly expand, and at the same time, the spinning component 3 is continuously advanced and rotated, so that the diameter expansion component 5 performs diameter expansion processing on the stainless steel pipe. At the same time, the transmission gear 701 is continuously rotated, forcing the tilting rod 805 to continuously toggle the fan-shaped toggle tooth 806 to reciprocate, so that the tightening gear 905 is continuously reciprocating, so that the coil spring 904 is retracted and released back and forth. Due to the delay effect of the delay component 10, when the delay component 10 has no time to act, the coil spring 904 is continuously retracted and released back and forth, forcing the delay component 10 not to drive the adjustment Component 11 moves, so that the resistance of the circuit connected to the adjustment component 11 does not change until the diameter expansion operation of the stainless steel tube is completed; due to the different thermoplasticity of the stainless steel tube, when the heating temperature of the heating component 6 is not enough, the spinning component 3 will be unable to move forward. At this time, the spinning component 3 will stop, forcing the transmission component 7 not to move, so that the transmission gear 701 engages with the pin 803, so that the fan-shaped toggle tooth 806 and the tightening gear 905 are in a separated state, so that the coil spring 904 is released, and the delay component 10 will move slowly at this time, so that the delay component 10 retreats, and the baffle 1004 drives the adjustment rod 1102 to retreat, so that the moving contact ring 1103 moves, forcing the resistance value of the circuit connected to the resistor bar 1101 to decrease, thereby increasing the current, forcing the heating component 6 to produce a higher heating temperature, until the spinning component 3 continues to move forward to expand the stainless steel tube.

[0052] 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 diameter-expanding treatment device for manufacturing a stainless steel reducing pipe, characterized in that, The invention comprises a support frame (1), wherein the support frame (1) is provided with a clamping device (2) for clamping a stainless steel pipe, the support frame (1) is provided with a spinning assembly (3), the spinning assembly (3) is provided with a support block (4), the support block (4) is provided with a diameter expansion assembly (5), the spinning assembly (3) is provided with a heating assembly (6), a transmission assembly (7) is provided between the support frame (1) and the spinning assembly (3), the support frame (1) is provided with a toggle assembly (8) connected to the transmission assembly (7), the support frame (1) is provided with a tightening assembly (9) connected to the toggle assembly (8), the support frame (1) is provided with a delay assembly (10) connected to the tightening assembly (9), and the support frame ( 1) is provided with an adjustment component (11) electrically connected to the heating component (6), and the adjustment component (11) is used to adjust the heating component (6); wherein, when the spinning component (3) moves normally, the movement of the transmission component (7) forces the toggle component (8) to drive the tightening component (9) to move back and forth normally, and due to the delayed movement of the delay component (10), the delay component (10) is forced not to move; when the spinning component (3) cannot be spun, the transmission component (7) does not move, so that the toggle component (8) and the tightening component (9) are not in contact, and the delay component (10) drives the tightening component (9) and the adjustment component (11) to move, thereby realizing the adjustment effect on the heating component (6).

2. The diameter-expanding processing device for manufacturing a stainless steel reducing pipe according to claim 1, characterized in that, The spinning assembly (3) comprises a hydraulic push rod (301) mounted on the support frame (1); the output end bearing of the hydraulic push rod (301) is connected to a rotating column (302) connected to the support block (4); a rotating motor (303) is mounted on the output end of the hydraulic push rod (301); the output shaft of the rotating motor (303) is connected to a driving gear (304); and the outer ring fixed sleeve of the rotating column (302) is provided with a driven gear (305) meshing with the driving gear (304).

3. The diameter-expanding processing device for manufacturing a stainless steel reducing pipe according to claim 2, wherein, The diameter expansion component (5) comprises a diameter expansion motor (501) mounted on the support block (4); the output shaft of the diameter expansion motor (501) is connected to a rotating gear (502); a plurality of diameter expansion blocks (503) are arranged in the support block (4); an diameter expansion gear (504) meshing with the rotating gear (502) is arranged in the support block (4); the diameter expansion gear (504) and the rotating gear (502) are both bearing-connected in the support block (4); and a diameter expansion spur rack (505) meshing with the diameter expansion gear (504) is arranged on the diameter expansion block (503).

4. The diameter-expanding treatment device for manufacturing a stainless steel reducing pipe according to claim 3, wherein, The heating assembly (6) comprises a support rod (601) arranged at the output end of the hydraulic push rod (301), a support ring (602) being arranged on the support rod (601), a connecting rod (603) being arranged on the support ring (602), and an electric heating ring (604) for heating being installed on the connecting rod (603).

5. The diameter-expanding processing device for manufacturing a stainless steel reducing pipe according to claim 4, wherein, The transmission assembly (7) comprises a transmission gear (701) connected to the support frame (1) by a bearing, a connecting plate (702) is provided on the support ring (602), and a transmission spur rack (703) meshing with the transmission gear (701) is provided on the connecting plate (702).

6. The diameter-expanding treatment device for manufacturing a stainless steel reducing pipe according to claim 5, characterized in that, The toggle assembly (8) comprises a fixed plate (801) arranged on the support frame (1); a rotating ring (802) is connected to the fixed plate (801) by a bearing; a latch (803) meshing with the transmission gear (701) is arranged on the rotating ring (802); a toggle spring (804) is arranged between the latch (803) and the fixed plate (801); a tilting rod (805) is arranged on the rotating ring (802); and a fan-shaped toggle tooth (806) is arranged on the tilting rod (805).

7. The diameter-expanding treatment device for manufacturing a stainless steel reducing pipe according to claim 6, wherein, The tightening assembly (9) comprises a mounting plate (901) arranged on the support frame (1), a mounting box (902) being arranged on the mounting plate (901), a tightening shaft (903) being connected to a bearing on the mounting plate (901), a coil spring (904) being arranged on the tightening shaft (903) and located inside the mounting box (902), and a tightening gear (905) meshing with the fan-shaped shifting teeth (806) being arranged on the tightening shaft (903).

8. The diameter-expanding treatment device for manufacturing a stainless steel reducing pipe according to claim 7, characterized in that, The delay assembly (10) comprises a storage cylinder (1001) arranged on the support frame (1), a delay piston (1002) being arranged in the storage cylinder (1001), a sliding rod (1003) penetrating the storage cylinder (1001) being arranged on the delay piston (1002), a baffle (1004) connected to the output end of the coil spring (904) being arranged on the sliding rod (1003), and a spring (1004) being arranged between the baffle (1004) and the storage cylinder (1001). There is a delay spring (1005) sleeved on the outer ring of the sliding rod (1003), and a delay cylinder (1006) is arranged on the support frame (1). An air inlet pipe (1007) and an air outlet pipe (1008) are arranged on the delay cylinder (1006). The diameter of the air inlet pipe (1007) is smaller than the diameter of the air outlet pipe (1008). The delay cylinder (1006) is connected to the storage cylinder (1001) through the air inlet pipe (1007) and the air outlet pipe (1008).

9. The diameter-expanding treatment device for manufacturing a stainless steel reducing pipe according to claim 8, characterized in that, The adjustment component (11) comprises a resistor bar (1101) arranged on the support frame (1); an adjustment rod (1102) is arranged on the baffle (1004); a dynamic contact ring (1103) adapted to the resistor bar (1101) is arranged on the adjustment rod (1102); a static contact ring (1104) is arranged on the resistor bar (1101); and the resistor bar (1101) is connected in series in the circuit of the electric heating coil (604) via the dynamic contact ring (1103) and the static contact ring (1104).

10. The expanding method of the expanding device for manufacturing a stainless steel reducing pipe according to claim 9, characterized in that, The support frame (1) and the clamping device (2) are used to clamp the stainless steel pipe, the heating component (6) is connected to a power source, and the stainless steel pipe is heated by the heating component (6). When normal, the spinning component (3) is started to force the spinning component (3) to enter the stainless steel pipe. When expanding the diameter, the diameter of the diameter expansion component (5) is forced to expand slowly. At the same time, the spinning component (3) continuously moves forward and rotates, so that the diameter expansion component (5) expands the stainless steel pipe. At the same time, the transmission The gear (701) rotates continuously, forcing the tilting rod (805) to continuously move the fan-shaped moving tooth (806) back and forth, causing the tightening gear (905) to continuously move back and forth, causing the coil spring (904) to retract and release back and forth. Due to the delay effect of the delay component (10), when the delay component (10) has no time to move, the coil spring (904) retracts and releases back and forth continuously, forcing the delay component (10) not to drive the adjustment component (11) to move, thereby causing the The resistance of the circuit connected to the regulating component (11) does not change until the diameter expansion operation of the stainless steel tube is completed; due to the different thermoplasticity of the stainless steel tube, when the heating temperature of the heating component (6) is insufficient, the spinning component (3) will be unable to move forward. At this time, the spinning component (3) will stop, forcing the transmission component (7) not to move, so that the transmission gear (701) is meshed with the latch (803), so that the fan-shaped toggle gear (806) is separated from the tightening gear (905). state, so that the coil spring (904) is released, and at this time the delay component (10) moves slowly, so that the delay component (10) retreats, and the baffle (1004) drives the adjustment rod (1102) to retreat, thereby causing the moving contact ring (1103) to move, forcing the resistance value of the resistor bar (1101) connected to the circuit to decrease, thereby increasing the current and forcing the heating component (6) to generate a higher heating temperature until the spinning component (3) continues to move forward to expand the diameter of the stainless steel tube.

Images