180-degree bent pipe forming device and forming process

Abstract

The invention relates to the technical field of bent pipe forming processes, in particular to a 180-degree bent pipe forming device and a forming process. The 180-degree bent pipe forming device comprises a workbench, fixed pulleys are installed on the two sides of the upper surface of the workbench, hydraulic equipment is arranged over the workbench, and a stamping column is fixedly arranged in the center of the top of the hydraulic equipment; the limiting assembly comprises an arc-shaped plate fixedly arranged on one side of the surface of the workbench and a moving frame arranged right in front of the arc-shaped plate, an arc-shaped groove is formed in the top of the front end face of the arc-shaped plate, an arc-shaped guide rod is fixedly connected to the inner wall of the arc-shaped groove, and the outer wall of the arc-shaped guide rod is sleeved with a first sliding block and a spring; the front end face of the first sliding block is fixed to the rear end face of a movable frame, a first hand wheel is arranged in a gap in one side of the movable frame, and a first threaded rod is fixedly connected to the center of the end face of one side of the first hand wheel. According to the 180-degree bent pipe forming device, the pipe bending efficiency and quality can be improved, and resource waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe bending forming technology, and in particular to a 180° pipe bending forming device and forming technology. Background Art

[0002] The pipe bending is carried out by using a complete set of bending equipment, which is divided into two processes: cold bending and hot pushing. Regardless of which machine equipment and pipeline, most of them use pipe bending, which is mainly used for oil, gas, liquid infusion, engineering bridge construction, etc. The materials of the pipe bending include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics; The equipment for bending pipes can be roughly divided into CNC pipe bending machines, hydraulic pipe bending machines, etc., and the process of pipe bending mainly includes material acceptance, heating and stamping in the furnace, primary acceptance, normalizing, quenching, tempering, secondary tempering, etc. For example, the existing public document CN219093258U-Stainless steel pipe bending forming device discloses a pipe bending forming device; Although the existing disclosed 180° pipe bending forming device can realize pipe bending, it still has certain shortcomings in actual use: first, the existing pipe bending forming device only limits the two ends of the pipe before forming when in use, and this method has a curved contact surface during the pressing forming process, and there is a lack of limiting measures at both ends of the pipe, so the pipe will deviate during the pressing process, causing the two ends of the straight section of the pipe to be uneven, affecting the forming quality; secondly, if the existing pipe bending forming device has uneven deviations at both ends of the pipe when in use, the pipe cannot be corrected in time, causing the pipe data to deviate and cannot be used further, resulting in a waste of resources; finally, the existing pipe bending forming device uses ordinary pressing or non-contact hot pressing to bend the pipe, and this method has stress inside the pipe, and direct pressing will cause mechanical damage to the pipe, affecting the quality of the pipe, and non-contact hot pressing has low heating efficiency and serious heat loss for the pipe; therefore, it is necessary to improve the existing technology to solve the above technical problems. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the fact that the existing 180° pipe bending forming device lacks limiting measures at both ends of the pipe fitting when in use, the pipe fitting will deviate during the pressing process, causing the two ends of the straight section of the pipe fitting to be uneven, affecting the forming quality, a 180° pipe bending forming device is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a 180° pipe bending forming device, comprising a workbench, fixed pulleys are installed on both sides of the upper surface of the workbench, a hydraulic device is arranged directly above the workbench, and a stamping column is fixedly arranged at the top center position of the hydraulic device; and a limiting component, comprising an arc plate fixedly arranged on one side of the workbench surface and a moving frame arranged directly in front of the arc plate, an arc groove is arranged on the top of the front end surface of the arc plate, an arc guide rod is fixedly connected to the inner wall of the arc groove, a first sliding block and a spring are sleeved on the outer wall of the arc guide rod, the front end surface of the first sliding block is fixed to the rear end surface of the moving frame, a first hand wheel is arranged in a gap on one side of the moving frame, a first threaded rod is fixedly connected to the center position of one side end surface of the first hand wheel, the other end of the first threaded rod passes through the bearing on the outer wall of the moving frame in sequence, and the threaded hole on one side end surface of the second sliding block is connected to the bearing on the inner wall of the moving frame, and the second sliding block The front end face of the block is fixedly connected to the limited positioning frame, and the center position of the inner wall of the limit sleeve frame is fixedly connected with an insert rod, and the top front end and rear end of the limit sleeve frame are respectively fixedly connected to the first fixing plate and the second fixing plate, and a second hand wheel is arranged on the outer side of the front end face of the first fixing plate, and one end of the second hand wheel is fixedly connected to the second threaded rod, and the other end of the second threaded rod passes through the bearing on the first fixing plate, the threaded hole on the end face of one side of the first moving block and the threaded hole on the end face of one side of the second moving block in sequence, and is connected to the bearing on the end face of one side of the second fixed plate, and the bottom of the first moving block and the second moving block respectively pass through the through holes on both sides of the top of the limit sleeve frame and are connected to adjacent clamping plates; wherein, the spring is located above the first sliding block, the external thread on the outer wall of the first threaded rod is spirally matched with the internal thread in the wall of the threaded hole on the second sliding block, the first moving block and the second moving block are spirally sleeved on both sides of the same second threaded rod, and rubber particles are bonded to the inner wall of the clamp.

[0006] As a preferred solution of a 180° pipe bending forming device of the present invention, a mounting groove is provided at the center of the bottom of the punching column, and a square hole is provided at the top of the punching column.

[0007] The beneficial effects of the present invention are as follows: through the limiting assembly, the positions of the limiting sleeve and the clamping plate can be adjusted under the action of the first threaded rod and the second threaded rod, so that the limiting sleeve and the clamping plate can be sleeved on the two ends of the pipe fitting, and under the auxiliary guiding action of the arc groove and the arc guide rod, the two ends of the pipe fitting are restricted to make circular arc motion synchronously during the bending process. Since the two sets of limiting sleeves are always sleeved on the two ends of the pipe fitting, the two ends of the pipe fitting are limited, which can prevent one end of the pipe fitting from extending outward during the bending process, causing the two ends of the pipe fitting to be uneven, thereby ensuring the bending quality of the pipe fitting.

[0008] In view of the fact that the existing 180° pipe bending forming device cannot correct the pipe fittings in time during use, resulting in deviations in the pipe fitting data and inability to continue to use, leading to a waste of resources, a further improvement of the 180° pipe bending forming device is proposed.

[0009] As a preferred solution of a 180° pipe bending forming device of the present invention, it also includes a downward pressure detection component arranged inside the square hole, the downward pressure detection component includes a worm fixed at the center position of the inner wall of the square hole and a movable sleeve frame sleeved on the outside of the worm, and a first slide groove is arranged on one side of the top and bottom ends of the inner part of the movable sleeve frame, and a first iron block is embedded on the inner walls at both ends of the first slide groove.

[0010] As a preferred solution of a 180° pipe bending forming device of the present invention, a motor is installed on the inner wall of one side of the movable sleeve frame, the output shaft of the motor is connected to the first rotating shaft through a coupling, a worm gear is sleeved on the outer wall of the first rotating shaft, a spline groove is provided on the other side end face of the first rotating shaft, and a spline shaft is inserted into the spline groove.

[0011] As a preferred solution of a 180° pipe bending forming device of the present invention, the other end of the spline shaft is fixedly connected to a second rotating shaft, the other end of the second rotating shaft passes through a bearing on a sliding frame and is connected to a driving gear disc, a driven gear disc is arranged behind the driving gear disc, a third rotating shaft is installed on the inner wall of the driven gear disc, and both ends of the third rotating shaft respectively pass through the bearings on the fixed frame and are connected to a rotating plate.

[0012] As a preferred solution of a 180° pipe bending forming device of the present invention, wherein: the top of the rotating plate is fixedly connected to a lower pressure plate, the bottom of the rotating plate is fixedly provided with a mounting plate, and a pressure sensor is installed at the bottom of the mounting plate; wherein, the rack on the outer wall of the worm wheel is meshed with the rack on the outer wall of the worm, the top and bottom of the sliding frame are slidably connected inside the adjacent first sliding groove, the top and bottom of the two side walls of the sliding frame are embedded with first electromagnetic blocks, the first electromagnetic block and the first iron block are magnetically attracted, the rack on the outer wall of the active gear disc is meshed with the rack on the outer wall of the driven gear disc, and one side wall of the fixed frame is fixed to the outer wall of the movable sleeve frame.

[0013] As a preferred solution of a 180° pipe bending forming device of the present invention, it also includes a top pressing assembly arranged inside the workbench, the top pressing assembly includes a hydraulic cylinder installed at the bottom end of the workbench and a top pressing block installed on the top of the hydraulic cylinder, auxiliary rods are installed on both side walls of the top pressing block, and the bottom end of the auxiliary rods is installed on the inner wall of the workbench.

[0014] Another beneficial effect of the present invention is that by setting up a downward pressure detection component and a top pressure component, the pressure sensors on both sides are first used to detect whether the two ends of the pipe fitting are flush, which has multiple functions. Then, the pipe fitting is continuously squeezed and corrected under the cooperation of the lower pressure plate and the top pressure block, thereby improving the bending quality of the pipe fitting. The pipe fitting can be corrected in time to avoid the two ends of the pipe fitting being uneven and unable to be used, resulting in waste of the pipe fitting.

[0015] In view of the fact that the existing 180° pipe bending forming device has stress inside the pipe during use, direct pressing will cause mechanical damage to the pipe and affect the quality of the pipe, and the non-contact hot pressing has low heating efficiency and serious heat loss for the pipe, a further improvement of the 180° pipe bending forming device is proposed.

[0016] As a preferred solution of a 180° pipe bending forming device of the present invention, it also includes a heating component arranged inside the mounting groove, the heating component includes a U-shaped pressing wheel installed inside the mounting groove and a rotating sleeve frame connected to the rear end surface of the U-shaped pressing wheel by a hinge, a heating ring is embedded in the U-shaped pressing wheel, a latch is provided at the top front end of the rotating sleeve frame, and second slide grooves are provided at the front and rear ends of the inner walls on both sides of the rotating sleeve frame.

[0017] As a preferred solution of a 180° pipe bending forming device of the present invention, second iron blocks are embedded on the inner walls on both sides of the second slide groove, movable arc plates are arranged on the front and rear end surfaces inside the rotating frame, a heating plate is embedded in the center position of the upper surface of the movable arc plate, third sliders are fixedly connected to the center positions of the outer walls on both sides of the movable arc plate, and second electromagnetic blocks are embedded in the top and bottom ends of the third slider; wherein the third slider is slidably connected inside the adjacent second slide groove, and the second electromagnetic block is magnetically attracted to the second iron block.

[0018] Another beneficial effect of the present invention is that by setting up a heating component, the bending part of the pipe is heated by using a heating ring and a heating plate on the inner wall of the movable arc plate, so that during the pipe pressing process, the temperature of the bending part of the pipe can be quickly increased, the bending efficiency of the pipe can be improved, and heat loss can be reduced.

[0019] In addition, the present invention also provides the following technical solutions: a 180° pipe bending forming process, a 180° pipe bending forming device performs pipe bending forming operations according to the following steps; S1: First, place the pipe to be bent on the surfaces of the fixed pulleys on both sides, then adjust the positions of the limiting sleeves on both sides, and sleeve the limiting sleeves on both ends of the pipe for limiting; S2: Then, the rotating sleeve is put on the outer wall of the pipe under the action of the latch, and the bending part of the pipe is heated by the heating ring and the heating plate; S3: Then use the hydraulic equipment to push the U-shaped pressing wheel at the bottom of the stamping column to apply force to the bending part of the pipe fitting, and cooperate with the positioning wheels on both sides to achieve the bending of the pipe fitting. During the bending process of the pipe fitting, the limit sleeves at both ends realize the end positioning; S4: The pipe fitting is continuously stressed. After both ends of the pipe fitting are separated from the inside of the limit sleeve, the stress conditions at both ends of the pipe fitting are detected by using a pressure sensor, and then the pipe fitting is corrected under the cooperation of the lower pressure plate and the top pressure block; S5: After the pipe is straightened, the hydraulic equipment continues to apply force to the pipe to complete the subsequent bending operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a schematic diagram of the overall structure of the 180° pipe bending forming device in the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the structure's hydraulic equipment and punching columns.

[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the disassembly of the limit assembly in the structure.

[0023] Figure 4 For the present invention Figure 3 Vertical section view of the curved plate in the structure.

[0024] Figure 5 For the present invention Figure 3 Structural diagram of the mobile box in the structure.

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the disassembly of the limit frame in the structure.

[0026] Figure 7 For the present invention Figure 2 Schematic diagram of the disassembly of the stamping column and the downward pressure detection assembly in the structure.

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the downward pressure detection component in the structure.

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of the disassembly of the moving frame and motor in the structure.

[0029] Fig.10 For the present invention Figure 1 Schematic diagram of the structure of the top pressure component.

[0030] Fig.11 For the present invention Figure 2 Schematic diagram of the structure of the heating component.

[0031] Fig.12 For the present invention Fig.11 Vertical cross-section of the heating assembly in the structure.

[0032] Fig.13 For the present invention Fig.12 Schematic diagram of the disassembly of the rotating frame in the structure.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 100, workbench; 101, fixed pulley; 102, hydraulic equipment; 103, stamping column; 103a, mounting groove; 103b, square hole; 200, limit assembly; 201, arc plate; 201a, arc groove; 202, arc guide rod; 203, spring; 204, moving frame; 204a, first slider; 205, first hand wheel; 205a, first threaded rod; 206, limit sleeve frame; 206a, second slider; 206b, plug rod; 207, first fixed plate; 208, second fixed plate; 209, second hand wheel; 209a, second threaded rod; 2010, first moving block; 2011, second moving block; 2012, clamping plate; 300, press detection assembly; 301, worm; 302, moving sleeve frame; 302a, first slide slot; 302b, first iron block; 30 3. Motor; 303a. First rotating shaft; 303b. Spline groove; 304. Worm gear; 305. Second rotating shaft; 305a. Spline shaft; 306. Sliding frame; 306a. First electromagnetic block; 307. Active gear plate; 308. Driven gear plate; 309. Third rotating shaft; 3010. Fixed frame; 3011. Rotating plate; 3012. Lower pressure plate; 3013. Mounting plate; 3013a. Pressure plate Sensor; 400, top pressure assembly; 401, top pressure block; 402, auxiliary rod; 403, hydraulic cylinder; 500, heating assembly; 501, U-shaped pressure wheel; 501a, heating ring; 502, rotating sleeve frame; 502a, latch; 502b, second slide groove; 502c, second iron block; 503, movable arc plate; 503a, heating plate; 504, third slider; 504a, second electromagnetic block. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0038] Reference Figure 1 , Figure 3 and Figure 4 , is the first embodiment of the present invention, which provides a 180° pipe bending forming device, which limits the two ends of the pipe by limiting the limit sleeve 206 and the clamping plate 2012 to prevent one end of the pipe from extending outward during the bending process, causing the two ends of the pipe to be uneven.

[0039] Specifically, a workbench 100, fixed pulleys 101 are installed on both sides of the upper surface of the workbench 100, a hydraulic device 102 is arranged directly above the workbench 100, and a stamping column 103 is fixedly arranged at the top center position of the hydraulic device 102; and a limiting assembly 200, including an arc plate 201 fixedly arranged on one side of the surface of the workbench 100 and a movable frame 204 arranged directly in front of the arc plate 201, an arc groove 201a is arranged on the top of the front end surface of the arc plate 201, an arc guide rod 202 is fixedly connected to the inner wall of the arc groove 201a, and a first slider 204a and a spring 203 are sleeved on the outer wall of the arc guide rod 202.

[0040] For details, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6The front end face of the first slider 204a is fixed on the rear end face of the moving frame 204, a first hand wheel 205 is provided in a gap on one side of the moving frame 204, a first threaded rod 205a is fixedly connected to the center position of one side end face of the first hand wheel 205, the other end of the first threaded rod 205a passes through the bearing on the outer wall of the moving frame 204 and the threaded hole on one side end face of the second slider 206a in sequence and is connected to the bearing on the inner wall of the moving frame 204, the front end face of the second slider 206a is fixedly connected to the limiting sleeve frame 206, the center position of the inner wall of the limiting sleeve frame 206 is fixedly connected to the insertion rod 206b, the top front end and rear end of the limiting sleeve frame 206 are respectively fixedly connected to the first fixing plate 207 and the second fixing plate 208, a second hand wheel 209 is provided on the outer side of the front end face of the first fixing plate 207, one end of the second hand wheel 209 is fixedly A second threaded rod 209a is fixedly connected, and the other end of the second threaded rod 209a passes through the bearing on the first fixed plate 207, the threaded hole on the end face of one side of the first moving block 2010 and the threaded hole on the end face of one side of the second moving block 2011 in sequence, and is connected to the bearing on the end face of one side of the second fixed plate 208, and the bottoms of the first moving block 2010 and the second moving block 2011 respectively pass through the through holes on both sides of the top of the limiting sleeve frame 206 and are connected to the adjacent clamping plate 2012; wherein, the spring 203 is located above the first sliding block 204a, the external thread on the outer wall of the first threaded rod 205a is spirally matched with the internal thread in the wall of the threaded hole on the second sliding block 206a, the first moving block 2010 and the second moving block 2011 are spirally sleeved on both sides of the same second threaded rod 209a, and rubber particles are bonded to the inner wall of the clamping plate 2012; When the above arrangement is used, the pipe to be bent is first placed on the top of the fixed pulleys 101 on both sides, and then the first hand wheels 205 on both sides are forced to rotate. The rotation of the first hand wheels 205 drives the first threaded rod 205a to rotate, and the external thread on the outer wall of the first threaded rod 205a is spirally matched with the internal thread in the wall of the threaded hole on the second slider 206a. Therefore, when the first threaded rod 205a rotates, the second slider 206a is driven to move. Under the action of the second slider 206a, the limit sleeve 206 moves and is sleeved on the outer sides of the two ends of the pipe. The limit sleeve 206 The plug rod 206b in 06 will be inserted into the inside of the pipe fitting, and then the second hand wheel 209 is forced to rotate. The rotation of the second hand wheel 209 will drive the second threaded rod 209a to rotate, and the external threads on the outer wall of the second threaded rod 209a are respectively spirally matched with the internal threads in the threaded hole walls of the first moving block 2010 and the second moving block 2011. Therefore, when the second threaded rod 209a rotates, it will drive the first moving block 2010 and the second moving block 2011 to move in the same or opposite directions. At this time, the first moving block 2010 and the second moving block 2011 are moved to the middle The clamping plate 2012 moves synchronously, so that the clamping plate 2012 can be clamped on the outer wall of the pipe fitting to play a role of limiting clamping. Then, the hydraulic equipment 102 is used to push the stamping column 103 and the U-shaped pressing wheel 501 downward, and cooperate with the fixed pulleys 101 on both sides to apply force to the middle part of the pipe fitting, so that the middle part of the pipe fitting is bent downward to achieve the bending forming of the pipe fitting. When the middle part of the pipe fitting is subjected to force, its two ends will bend upward under the limit of the fixed pulley 101. At this time, the limiting sleeve frames 206 limited at both ends of the pipe fitting will be between the first slider 204a, the arc groove 201a and the arc groove 204b. Under the auxiliary guiding action of the guide rod 202, the pipe will synchronously make circular motion and squeeze the spring 203. During this process, the two sets of limit sleeves 206 are always sleeved on the two ends of the pipe, thereby limiting the two ends of the pipe, which can prevent one end of the pipe from extending outward during the bending process, causing the two ends of the pipe to be uneven. With the continuous bending of the pipe and the pressure of the hydraulic equipment 102, the pipe will move downward as a whole so that the two ends will be separated from the limit sleeves 206 on both sides, realizing automatic separation of the pipe, and the entire limit assembly 200 will automatically rebound under the elastic performance of the spring 203.

[0041] Furthermore, the hydraulic equipment 102 is prior art, so it will not be described in detail here. The arc groove 201a is set according to the movement trajectory of the two ends of the pipe during the bending process. The first slider 204a and the spring 203 can slide along the outer wall of the arc guide rod 202 to adjust the position. Under the elastic performance of the spring 203, the first slider 204a can rebound to the bottom of the arc groove 201a. When the first threaded rod 205a rotates, it can drive the second slider 206a to move. When the second threaded rod 209a rotates, it can drive the first moving block 2010 and the second moving block 2011 to move in opposite directions. The insertion rod 206b can be inserted into the pipe. The first fixed plate 207 and the second fixed plate 208 are symmetrically arranged. The rubber particles can increase the friction at the end of the pipe.

[0042] Read in detail Figure 1 and Figure 2 As shown, a mounting groove 103 a is provided at the center of the bottom of the stamping column 103 , and a square hole 103 b is provided at the top of the stamping column 103 .

[0043] Furthermore, the mounting groove 103a and the square hole 103b can reduce the overall weight of the device and facilitate the installation of various components. Example 2

[0044] Reference Figure 1 , Figure 2 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 , which is the second embodiment of the present invention, is based on the previous embodiment, except that, in order to detect the quality of the pipe fittings and perform corresponding pipe corrections, the lower pressure plate 3012 and the top pressure block 401 are used to apply force to the middle part and the protruding end of the pipe fitting for correction.

[0045] Specifically, it also includes a downward pressure detection component 300 arranged inside the square hole 103b, and the downward pressure detection component 300 includes a worm 301 fixed at the center of the inner wall of the square hole 103b and a movable sleeve frame 302 sleeved on the outside of the worm 301, and the inner top and bottom sides of the movable sleeve frame 302 are both provided with a first slide groove 302a, and the inner walls at both ends of the first slide groove 302a are both embedded with a first iron block 302b; a motor 303 is installed on the inner wall of one side of the movable sleeve frame 302, and the output shaft of the motor 303 is connected to the first rotating shaft 303a through a coupling. A worm gear 304 is sleeved on the outer wall of the first rotating shaft 303a, and a spline groove 303b is provided on the other side end surface of the first rotating shaft 303a, and a spline shaft 305a is inserted into the spline groove 303b; the other end of the spline shaft 305a is fixedly connected to the second rotating shaft 305, and the other end of the second rotating shaft 305 passes through the bearing on the sliding frame 306 and is connected to the driving gear plate 307, and a driven gear plate 308 is provided behind the driving gear plate 307, and a third rotating shaft 309 is installed on the inner wall of the driven gear plate 308, and the two ends of the third rotating shaft 309 respectively pass through the fixed frame The bearing on 3010 is connected to the rotating plate 3011; the top of the rotating plate 3011 is fixedly connected with the lower pressure plate 3012, the bottom of the rotating plate 3011 is fixedly provided with a mounting plate 3013, and the bottom of the mounting plate 3013 is installed with a pressure sensor 3013a; wherein, the rack on the outer wall of the worm wheel 304 is meshed with the rack on the outer wall of the worm 301, the top and bottom of the sliding frame 306 are slidably connected inside the adjacent first sliding groove 302a, and the top and bottom of the two side walls of the sliding frame 306 are embedded with the first electromagnetic block 306a, and the first electromagnetic block 306a is connected with the first iron The movable sleeve frame 302 is magnetically attracted to each other, the rack on the outer wall of the active gear disc 307 is meshed with the rack on the outer wall of the driven gear disc 308, and one side wall of the fixed frame 3010 is fixed to the outer wall of the movable sleeve frame 302; it also includes a top pressing component 400 arranged inside the workbench 100, the top pressing component 400 includes a hydraulic cylinder 403 installed at the bottom end of the workbench 100 and a top pressing block 401 installed on the top of the hydraulic cylinder 403, and auxiliary rods 402 are installed on both side walls of the top pressing block 401, and the bottom end of the auxiliary rod 402 is installed on the inner wall of the workbench 100; When the above arrangement is in use, if the two ends of the pipe fitting are still not flush during the subsequent bending process, or if the two ends of the pipe fitting that are not flush need to be inspected and corrected, the pipe fitting is first placed between the fixed pulleys 101 on both sides, and then the motor 303 is started. The output shaft of the motor 303 rotates through the coupling to drive the first rotating shaft 303a to rotate, and the rotation of the first rotating shaft 303a will drive the worm wheel 304 on its outer wall to rotate, wherein the rack on the outer wall of the worm wheel 304 is meshed with the rack on the outer wall of the worm 301, so when the worm wheel 304 rotates, it will move up and down along the outer wall of the worm 301, and then will synchronously drive the moving sleeve frame 304 to move. 02 and the two outer fixing frames 3010 move synchronously, and the movement of the fixing frame 3010 will drive the third rotating shaft 309 inside it and the rotating plates 3011 at both ends to move synchronously. The downward movement of the rotating plate 3011 will cause the bottom mounting plate 3013 and the pressure sensor 3013a to move downward and press on the two ends of the top of the bent pipe. The pressure sensors 3013a on both sides detect the forces at both ends of the pipe fitting to achieve the purpose of detecting whether the forces at both ends of the pipe fitting are the same. If the pressure detection at both ends of the pipe fitting is different, at this time, the first electromagnetic block 306a is energized, wherein the first electromagnetic block 306a can generate magnetic attraction with the adjacent first iron block 302b after being energized. The sliding frame 306 can move inside the first sliding groove 302a, and the sliding frame 306 will drive the second rotating shaft 305 and the active toothed disc 307 to move synchronously. At the same time, the active toothed disc 307 contacts the driven toothed disc 308, and the spline shaft 305a on the second rotating shaft 305 is inserted into the spline groove 303b on the first rotating shaft 303a to play a role in limiting. Therefore, when the first rotating shaft 303a rotates, the second rotating shaft 305 and the active toothed disc 307 on its outer wall will be driven to rotate synchronously under the action of the spline groove 303b and the spline shaft 305a. The rack on the outer wall of the active toothed disc 307 and the rack on the outer wall of the driven toothed disc 308 The third rotating shaft 309 and the rotating plate 3011 are meshed, thereby driving the rotation of the third rotating shaft 309 and the rotating plate 3011, so as to adjust the upper and lower positions of the lower pressure plate 3012 and the mounting plate 3013. Then, under the action of the first electromagnetic block 306a, the active gear disc 307 is returned to the initial position, and the lower pressure plate 3012 is pressed on both ends of the pipe fitting. Then, the hydraulic cylinder 403 is used to lift the top pressure block 401 and support it on the top of the pipe fitting. During this process, the U-shaped pressure wheel 501 is continuously pressed on the middle part of the surface of the pipe fitting. Then, the pipe fitting is continuously corrected through the cooperation of the lower pressure plate 3012 and the top pressure block 401, so as to improve the bending quality of the pipe fitting and avoid the pipe fitting being unable to be used due to unevenness at both ends.

[0046] Furthermore, the movable sleeve frame 302 is slidably connected to the inner wall of the square hole 103b. Through the connection between the spline groove 303b and the spline shaft 305a, the second rotating shaft 305 and the first rotating shaft 303a can be rotated synchronously. The worm wheel 304 rotates under the action of the worm 301 to drive the movable sleeve frame 302 to move up and down. Since the outer wall of the active toothed disc 307 and the outer wall of the driven toothed disc 308 are meshed, the active toothed disc 307 can drive the driven toothed disc 308 to rotate synchronously when it rotates. The pressure sensor 3013a can be used to detect whether the two ends of the pipe are flush. The sliding frame 306 can slide in the first sliding groove 302a to adjust the position. The first electromagnetic block 306a cooperates with the first iron block 302b to adjust the position of the sliding frame 306, and the auxiliary rod 402 can assist. Example 3

[0047] Reference Figure 2 , Fig.11 , Fig.12 and Fig.13 , which is the third embodiment of the present invention, is based on the above-mentioned embodiment 1, except that, in order to improve the bending efficiency of the pipe fitting, the bending part of the pipe fitting can be heated under the action of the heating ring 501a and the heating plate 503a to increase the temperature and reduce heat loss.

[0048] Specifically, it also includes a heating component 500 arranged inside the installation groove 103a, the heating component 500 includes a U-shaped pressure wheel 501 installed inside the installation groove 103a and a rotating frame 502 connected to the rear end surface of the U-shaped pressure wheel 501 through a hinge, a heating ring 501a is embedded in the U-shaped pressure wheel 501, a latch 502a is arranged at the top front end of the rotating frame 502, and second slide grooves 502b are arranged at the front and rear ends of the inner walls on both sides of the rotating frame 502; the inner walls on both sides of the second slide groove 502b are embedded There is a second iron block 502c, the front and rear end surfaces of the rotating sleeve frame 502 are both provided with movable arc plates 503, the center position of the upper surface of the movable arc plate 503 is embedded with a heating plate 503a, the center positions of the outer walls on both sides of the movable arc plate 503 are both fixedly connected with third sliders 504, and the top and bottom ends of the third sliders 504 are both embedded with second electromagnetic blocks 504a; wherein, the third slider 504 is slidably connected inside the adjacent second slide groove 502b, and the second electromagnetic block 504a is magnetically attracted to the second iron block 502c; When the above arrangement is in use, after the pipe is placed on the surface of the fixed pulleys 101 on both sides, the rotating frame 502 is flipped under the action of the hinge so that it is sleeved on the bottom of the pipe, and the rotating frame 502 is fixed to the outside of the outer wall of the pipe by using the pin 502a, and then the second electromagnetic block 504a is energized. At this time, magnetic attraction is generated between the second electromagnetic block 504a and the adjacent second iron block 502c, so that the movable arc plate 503 adjusts its position under the auxiliary action of the third slider 504 and the second slide groove 502b, and the movable arc plate 503 is pressed on the outer wall of the pipe, and then the heating ring 501a and the heating plate 503a can be used to heat the outer wall of the pipe at the bend, so that during the pressing process of the pipe, the temperature of the bend of the pipe can be quickly increased, the bending efficiency of the pipe can be improved, and the heat loss can be reduced.

[0049] Furthermore, the inner side of the U-shaped pressure wheel 501 is arc-shaped and is used to embed into the outer wall of the pipe. The rotating sleeve frame 502 can be rotated and adjusted in position under the action of the hinge. The latch 502a is used to plug in the rotating sleeve frame 502. Under the action of the second slide groove 502b and the third slider 504, the movable arc plate 503 can be assisted to move and adjust the position. The second electromagnetic block 504a and the second iron block 502c can be used to adjust the position of the movable arc plate 503. Example 4

[0050] This embodiment is the fourth embodiment of the present invention, and this embodiment provides a 180° elbow forming process, specifically, comprising the following steps: S1: First, place the pipe to be bent on the surfaces of the fixed pulleys 101 on both sides, then adjust the positions of the limiting sleeves 206 on both sides, and sleeve the limiting sleeves 206 on both ends of the pipe for limiting; S2: Then, the rotating sleeve 502 is sleeved on the outer wall of the pipe under the action of the latch 502a, and the bending part of the pipe is heated by the heating ring 501a and the heating plate 503a; S3: Then, the hydraulic device 102 is used to push the U-shaped pressing wheel 501 at the bottom of the punching column 103 to apply force to the bending part of the pipe fitting, and the fixed pulleys 101 on both sides are used to bend the pipe fitting. During the bending process of the pipe fitting, the limiting sleeves 206 at both ends are used to position the ends. S4: The pipe fitting is continuously stressed, and after both ends thereof are separated from the inside of the limiting sleeve frame 206, the stress conditions at both ends of the pipe fitting are detected by using the pressure sensor 3013a, and then the pipe fitting is corrected under the cooperation of the lower pressing plate 3012 and the top pressing block 401; S5: After the pipe is straightened, the hydraulic device 102 continues to apply force to the pipe to complete subsequent bending operations.

[0051] In addition, it should be noted that the components not described in detail in this article are prior art.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0053] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0054] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A 180° pipe bending forming device, characterized in that: include, A workbench (100), wherein fixed pulleys (101) are installed on both sides of the upper surface of the workbench (100), a hydraulic device (102) is arranged directly above the workbench (100), and a stamping column (103) is fixedly arranged at the center position of the top of the hydraulic device (102); and, The limiting assembly (200) comprises an arc-shaped plate (201) fixedly mounted on one side of the surface of the workbench (100) and a movable frame (204) arranged in front of the arc-shaped plate (201); an arc-shaped groove (201a) is arranged on the top of the front end surface of the arc-shaped plate (201); an arc-shaped guide rod (202) is fixedly connected to the inner wall of the arc-shaped groove (201a); a first slider (204a) and a spring (203) are sleeved on the outer wall of the arc-shaped guide rod (202); the first slider (204a) and a spring (203) are sleeved on the outer wall of the arc-shaped guide rod (202); The front end face of the movable frame (204a) is fixed to the rear end face of the movable frame (204); a first hand wheel (205) is provided in a gap on one side of the movable frame (204); a first threaded rod (205a) is fixedly connected to the center position of one end face of the first hand wheel (205); the other end of the first threaded rod (205a) sequentially passes through the bearing on the outer wall of the movable frame (204) and the threaded hole on one end face of the second slider (206a) and is connected to the bearing on the inner wall of the movable frame (204); The front end surface of the second sliding block (206a) is fixedly connected to the limit sleeve frame (206), the center position of the inner wall of the limit sleeve frame (206) is fixedly connected to the insertion rod (206b), the top front end and the rear end of the limit sleeve frame (206) are respectively fixedly connected to the first fixing plate (207) and the second fixing plate (208), the front end surface of the first fixing plate (207) is provided with a second hand wheel (209) on the outside, and one end of the second hand wheel (209) is fixedly connected to the second threaded rod (209a) ), the other end of the second threaded rod (209a) sequentially passes through the bearing on the first fixed plate (207), the threaded hole on one end surface of the first moving block (2010) and the threaded hole on one end surface of the second moving block (211) to be connected to the bearing on one end surface of the second fixed plate (208), and the bottoms of the first moving block (2010) and the second moving block (2011) respectively pass through the through holes on both sides of the top of the limiting sleeve (206) to be connected to the adjacent clamping plates (2012); The spring (203) is located above the first slider (204a), the external thread on the outer wall of the first threaded rod (205a) is spirally matched with the internal thread in the wall of the threaded hole on the second slider (206a), the first moving block (2010) and the second moving block (2011) are spirally sleeved on both sides of the same second threaded rod (209a), and rubber particles are bonded to the inner wall of the clamping plate (2012).

2. A 180° pipe bending forming device as claimed in claim 1, characterized in that: A mounting groove (103a) is provided at the center of the bottom of the punching column (103), and a square hole (103b) is provided at the top of the punching column (103).

3. A 180° pipe bending forming device as claimed in claim 2, characterized in that: The invention also comprises a downward pressure detection component (300) arranged inside the square hole (103b), the downward pressure detection component (300) comprising a worm (301) fixedly arranged at the center position of the inner wall of the square hole (103b) and a movable sleeve frame (302) sleeved on the outside of the worm (301), the inner top and bottom sides of the movable sleeve frame (302) are both provided with a first slide groove (302a), and the inner walls at both ends of the first slide groove (302a) are both embedded with a first iron block (302b).

4. A 180° pipe bending forming device as claimed in claim 3, characterized in that: A motor (303) is installed on the inner wall of one side of the movable sleeve frame (302); the output shaft of the motor (303) is connected to the first rotating shaft (303a) via a coupling; a worm gear (304) is sleeved on the outer wall of the first rotating shaft (303a); a spline groove (303b) is provided on the end surface of the other side of the first rotating shaft (303a); a spline shaft (305a) is inserted into the interior of the spline groove (303b).

5. A 180° pipe bending forming device as claimed in claim 4, characterized in that: The other end of the spline shaft (305a) is fixedly connected to a second rotating shaft (305), the other end of the second rotating shaft (305) passes through a bearing on a sliding frame (306) and is connected to a driving gear disc (307), a driven gear disc (308) is arranged behind the driving gear disc (307), a third rotating shaft (309) is mounted on the inner wall of the driven gear disc (308), and two ends of the third rotating shaft (309) respectively pass through bearings on a fixed frame (3010) and are connected to a rotating plate (3011).

6. A 180° pipe bending forming device as claimed in claim 5, characterized in that: The top of the rotating plate (3011) is fixedly connected to a lower pressing plate (3012), the bottom of the rotating plate (3011) is fixedly provided with a mounting plate (3013), and the bottom of the mounting plate (3013) is mounted with a pressure sensor (3013a); The rack on the outer wall of the worm wheel (304) meshes with the rack on the outer wall of the worm (301); the top and bottom of the sliding frame (306) are slidably connected inside the adjacent first sliding groove (302a); the top and bottom of both side walls of the sliding frame (306) are embedded with first electromagnetic blocks (306a); the first electromagnetic blocks (306a) and the first iron blocks (302b) are magnetically attracted to each other; the rack on the outer wall of the active gear disc (307) meshes with the rack on the outer wall of the driven gear disc (308); and one side wall of the fixed frame (3010) is fixed to the outer wall of the movable sleeve frame (302).

7. A 180° pipe bending forming device as claimed in claim 1, characterized in that: It also includes a pressing assembly (400) arranged inside the workbench (100), the pressing assembly (400) including a hydraulic cylinder (403) installed at the bottom end of the workbench (100) and a pressing block (401) installed on the top of the hydraulic cylinder (403), auxiliary rods (402) are installed on both side walls of the pressing block (401), and the bottom end of the auxiliary rod (402) is installed on the inner wall of the workbench (100).

8. A 180° pipe bending forming device as claimed in claim 2, characterized in that: The heating device also comprises a heating component (500) arranged inside the installation groove (103a), wherein the heating component (500) comprises a U-shaped pressure wheel (501) installed inside the installation groove (103a) and a rotating sleeve (502) rotatably connected to the rear end surface of the U-shaped pressure wheel (501) via a hinge, wherein a heating ring (501a) is embedded inside the U-shaped pressure wheel (501), a latch (502a) is arranged at the top front end of the rotating sleeve (502), and second slide grooves (502b) are arranged at the front and rear ends of the inner walls on both sides of the rotating sleeve (502).

9. A 180° pipe bending forming device as claimed in claim 8, characterized in that: Second iron blocks (502c) are embedded on both inner walls of the second slide groove (502b), movable arc plates (503) are provided on the front and rear end surfaces inside the rotating sleeve (502), a heating plate (503a) is embedded in the center of the upper surface of the movable arc plate (503), third sliders (504) are fixedly connected to the center of both outer walls of the movable arc plate (503), and second electromagnetic blocks (504a) are embedded in the top and bottom of the third slider (504); The third sliding block (504) is slidably connected inside the adjacent second sliding groove (502b), and the second electromagnetic block (504a) and the second iron block (502c) are magnetically attracted to each other.

10. A 180° pipe bending forming process, characterized in that: The 180° pipe bending forming device according to any one of claims 6 to 9 performs pipe bending forming operation according to the following steps; S1: First, the pipe to be bent is placed on the surfaces of the fixed pulleys (101) on both sides, then the positions of the limiting sleeves (206) on both sides are adjusted, and the limiting sleeves (206) are sleeved on both ends of the pipe to limit the position; S2: Then, the rotating sleeve frame (502) is sleeved onto the outer wall of the pipe under the action of the latch (502a), and the bending part of the pipe is heated by the heating ring (501a) and the heating plate (503a); S3: Then, the hydraulic device (102) is used to push the U-shaped pressing wheel (501) at the bottom of the punching column (103) to apply force to the bending part of the pipe fitting, and the fixed pulleys (101) on both sides are used to realize the bending of the pipe fitting. During the bending process of the pipe fitting, the limiting sleeves (206) at both ends realize the end positioning; S4: After the pipe fitting is continuously stressed and both ends thereof are separated from the interior of the limiting sleeve frame (206), the stress conditions at both ends of the pipe fitting are detected by using a pressure sensor (3013a), and then the pipe fitting is corrected by the cooperation of the lower pressing plate (3012) and the top pressing block (401); S5: After the pipe is straightened, the hydraulic device (102) continues to apply force to the pipe to complete subsequent bending operations.

Images