A tubing bending device and automatic bending equipment

Abstract

The technical scheme belongs to the technical field of oil pipe bending device and specifically relates to an oil pipe bending device and automatic bending equipment, which comprises a base, an upper pipe mechanism movably arranged on the base, the upper pipe mechanism being provided with a plurality of standby material grooves for bearing nuts and oil pipes; a pipe bending seat arranged on the base, the pipe bending seat being provided with pipe arc grooves corresponding to the standby material grooves; and a top bending mechanism movably arranged on the base, the moving direction of the top bending mechanism being perpendicular to the moving direction of the upper pipe mechanism, the top bending mechanism being rotatably provided with top bending rollers corresponding to the pipe arc grooves, the top bending rollers having concave arc grooves in the circumferential direction; after the upper pipe mechanism moves downward, the side part of the oil pipe is clamped and limited in the pipe arc groove, the top bending mechanism drives the top bending rollers to move toward one side of the pipe bending seat, the top bending rollers press and bend the oil pipe into the pipe arc groove, and through the vertical feeding positioning of the upper pipe mechanism and the horizontal feeding bending action of the top bending mechanism, automatic and continuous operation from standby material to forming is realized, and the bending precision and production efficiency are improved.

Description

Technical Field

[0001] This technical solution relates to the field of tubing bending device technology, specifically to a tubing bending device and automatic bending equipment. Background Technology

[0002] Automotive oil lines are key components in vehicles that transport media (such as oil). During vehicle assembly, oil lines need to be precisely bent into spatial angles and shapes that match the design requirements according to the specific layout of different vehicle models to ensure that they can be accurately installed in the correct position and meet the connection and functional requirements of various systems.

[0003] In the current tubing processing field, tubing bending processes still generally adopt semi-automated operations assisted by simple tooling. Most of the assembly steps need to be completed manually. Long hours of manual work can easily lead to fatigue and affect the consistency of processing quality. Equipment is only introduced to assist in the subsequent bending process. However, because the bending device relies on manual operation, its structure is relatively simple, resulting in insufficient bending accuracy and poor consistency. This restricts the overall efficiency and reliability of the tubing bending process, and the overall level of automation is low, leading to poor production efficiency. Summary of the Invention

[0004] This technical solution aims to improve the poor production efficiency of existing oil pipe bending processes due to high reliance on manual operations, and provides an oil pipe bending device and automatic bending equipment.

[0005] The purpose of this technical solution is achieved as follows:

[0006] An oil pipe bending device and automatic bending equipment, including a base, and further comprising:

[0007] The upper tube mechanism is movably mounted on the machine base, and the upper tube mechanism is provided with several material storage grooves for carrying nuts and oil pipes;

[0008] A pipe bending seat, mounted on the machine base, is provided with a pipe arc groove corresponding to the material preparation trough; and

[0009] The top bending mechanism is movably mounted on the base and moves in a direction perpendicular to the moving direction of the upper tube mechanism. The top bending mechanism is rotatably equipped with a top bending roller corresponding to the tube arc groove, and the top bending roller has a concave arc groove along the circumference.

[0010] When the upper pipe mechanism moves downward, part of the oil pipe is locked and confined in the pipe arc groove. The top bending mechanism drives the top bending roller to move toward one side of the pipe bending seat, so that the top bending roller presses against the oil pipe and bends it into the pipe arc groove.

[0011] Through the above technical solution, when a tubing bending device is in normal use, the nut is pre-installed in the material preparation groove, the tubing passes through the inner hole of the nut, and the upper tube mechanism carries the nut and tubing downwards, so that the front part of the tubing is accurately inserted into the tube arc groove of the bending seat for initial positioning. The top bending mechanism moves forward in the horizontal direction, causing the top bending roller to move towards the tubing. After the concave arc groove around the roller contacts the tubing, it rolls and continuously applies pressure, forcing the suspended section of the tubing to be plastically bent against the arc surface of the bending seat until the tubing is bent to a predetermined angle that matches the tube arc groove. The entire process is achieved through the coordinated vertical feeding and positioning of the upper tube mechanism and the horizontal feeding and bending action of the top bending mechanism, realizing automated continuous operation from material preparation to forming, improving bending accuracy and production efficiency.

[0012] Preferably, the tube arc groove includes a groove segment one and a groove segment two, the groove segment one and the groove segment two are connected, and the angle between the groove segment two and the groove segment one is greater than or equal to 90 degrees.

[0013] Through the above technical solution, the pipe arc groove is divided into two connected groove segments, and the two groove segments form an included angle. This included angle is a reserved bending allowance, which is specifically used to compensate for the elastic rebound generated after the oil pipe is bent to relieve pressure, overcome the influence of material rebound on forming accuracy, and improve the accuracy of bending angle and product consistency.

[0014] Preferably, the bending mechanism includes:

[0015] A top bend seat, which is slidably connected to the base;

[0016] The lifting angle seat is hinged to the top bend seat, and the top bend roller is provided on the lifting angle seat. The bottom of the lifting angle seat is provided with an inclination platform, and the inclination platform has an inclination arc surface. The bend seat is rotatably connected to an inclination wheel that is correspondingly provided with the inclination platform.

[0017] A top bending drive is mounted on the machine base. The top bending drive is used to drive the top bending seat to move back and forth. The tilting wheel rotates and abuts along the tilting arc surface. The tilting arc surface guides the lifting seat to rotate and lift it up by a certain angle, so as to drive the top bending roller to move along the direction of the second groove segment.

[0018] Through the above technical solution, the top bending drive drives the top bending seat to move forward in a straight line, thereby driving the lifting angle seat and the top bending roller hinged on it to move synchronously. After the tilting platform at the bottom of the lifting angle seat contacts the tilting wheel on the bending tube seat, the tilting wheel rolls from the low point to the high point along the tilting arc surface. The specific contour of the arc surface is used to force the lifting angle seat to rotate and lift around the hinge point (i.e., the cam principle), so that after the top bending roller is horizontally pressed, its movement trajectory can follow the arc direction of the second section of the tube arc groove and press upward into the bending section, effectively overcoming the rebound and accurately forming. The horizontal propulsion and angle pressing are combined to ensure the precise control of the bending trajectory.

[0019] Preferably, the upper tube mechanism includes:

[0020] The upper tube seat is slidably connected to the machine base;

[0021] The pipe fixing assembly includes a pipe fixing plate, a pipe fixing fixture, and a pipe fixing drive unit disposed on the upper pipe seat. The pipe fixing fixture is movably connected to the output end of the pipe fixing drive unit. The pipe fixing plate has a material preparation groove one, and the pipe fixing fixture has a corresponding material preparation groove two. The pipe fixing drive unit is used to drive the pipe fixing fixture to move toward the pipe fixing plate. The material preparation groove one and the material preparation groove two are joined together to form the material preparation groove, and a nut is fixed in the material preparation groove.

[0022] The upper tube drive is mounted on the machine base. The upper tube drive drives the upper tube seat to move between a first position and a second position. When the upper tube seat is in the first position, the nut and oil pipe are combined in the material preparation groove. When the upper tube seat is in the second position, the oil pipe is placed in the tube arc groove.

[0023] With the above technical solution, when the upper tube seat is in the first position, the side of the nut first engages with the material preparation groove one. The fixed tube drive component drives the fixed tube clamp to move toward the fixed tube clamping plate, so that the material preparation groove one and the material preparation groove two on the surface of the two merge to form a closed material preparation groove, which precisely confines the nut. Then the oil pipe passes vertically through the nut and falls to the designated position. The upper tube drive component pushes the upper tube seat to move vertically downward to the second position, realizing the initial positioning of the oil pipe side engaging in the pipe arc groove. This design ensures the relative position stability of the nut and the oil pipe during the conveying process through the clamping of the fixed tube component, and the precise stroke of the upper tube seat reliably delivers the component to the bending station, providing stable and precise feeding and positioning for the subsequent bending and pressing process.

[0024] Preferably, the pipe bending seat is detachably connected to a pipe bending mold seat, the pipe bending mold seat is provided with the pipe arc groove, the pipe bending mold seat is provided with a feeding groove corresponding to the material preparation groove, the pipe bending mold seat is provided with a first avoidance groove for avoiding the lifting of the top bending roller, and the pipe bending seat is also provided with a second avoidance groove for avoiding the bending section of the oil pipe.

[0025] Through the above technical solution, the blanking groove of the bending die base, together with the material preparation groove, further defines the position of the nut. The bending die base is designed to be detachably connected to the bending base, and blanking grooves of different sizes can be replaced to suit nuts of different specifications, thereby enhancing the processing adaptability and flexible production capability of the equipment.

[0026] Two clearance grooves reliably prevent the lifting action of the top bending roller and the interference between the oil pipe bend section and the bending mold base, ensuring the smoothness and stability of complex bending actions.

[0027] Preferably, the machine base is provided with a feeding assembly, which includes a feeding drive and a feeding push block. The feeding push block is slidably disposed relative to the machine base and has a protruding pushing part. The feeding drive is used to drive the feeding push block to move toward the bending die base, so that the pushing part pushes the oil pipe and nut to disengage from the feeding groove for feeding.

[0028] With the above technical solution, after the oil pipe is bent, the feeding drive drives the feeding push block to slide horizontally toward the bending die seat. The feeding push block pushes the lower end of the bent oil pipe through the pushing part, and removes it together with the nut from the feeding groove, realizing automatic part removal, and further improving the continuity of production cycle and overall efficiency.

[0029] Preferably, the upper tube seat is provided with a catheter assembly, the catheter assembly comprising:

[0030] The catheter seat is slidably disposed on the upper catheter seat;

[0031] A catheter clamp is disposed at the lower part of the catheter seat. The catheter clamp includes a clamp seat, two clamp blocks that slide inside the clamp seat, and several elastic elements. A clamping channel for the oil supply pipe is formed between the two clamp blocks. The clamp blocks have a guide arc surface. The arc direction of the guide arc surfaces on both sides makes the clamping channel flare outward. The elastic elements push the clamp blocks on both sides with elastic force to move towards each other and close together, which is used to adjust the size of the clamping channel.

[0032] A conduit drive is used to drive the conduit seat to move. The sliding direction of the conduit seat is perpendicular to the sliding direction of the upper conduit seat. The conduit clamp channel is aligned with the material preparation tank, and the oil pipe can be guided to the material preparation tank through the conduit clamp channel.

[0033] Through the above technical solution, during the process of aligning the oil pipe with the nut, the lower end of the oil pipe pushes against the guide arc surfaces on both sides to make the two clamping blocks avoid each other. The oil pipe enters the clamping channel, and the elastic element continuously pushes the two clamping blocks to apply clamping force to the oil pipe. The oil pipe is gently clamped and centered to ensure its verticality, optimize the accuracy of the fit between the oil pipe and the nut, and improve the stability of the oil pipe feeding.

[0034] Preferably, the upper tube seat is provided with a tube pressing assembly, the tube pressing assembly comprising:

[0035] A guide frame, which is mounted above the conduit assembly;

[0036] A pipe-pressing rod is movably mounted on the guide frame, and the position of the pipe-pressing rod is aligned with the pipe-clamping channel;

[0037] A pipe-pressing drive unit, the output end of which is connected to a pipe-pressing rod, is used to drive the pipe-pressing rod to descend, so that the pipe-pressing rod presses against and pushes the oil pipe downward through the pipe clamping channel.

[0038] The above technical solution aims to further reduce tubing sway and increase the clamping force of the two clamping blocks on the tubing, which can easily cause the tubing to fail to pass through the clamping channel due to its own weight. By adding a clamping assembly, the clamping drive unit drives the clamping rod to descend, and the clamping rod presses against and pushes the tubing downward, allowing the tubing to pass smoothly through the clamping channel and further improving the fitting accuracy between the tubing and the nut.

[0039] An automatic bending device includes a frame, and further includes a tubing bending device as described in any of the preceding claims, and further includes:

[0040] Nut feeding device, used to feed nuts to the feeding device;

[0041] Oil pipe feeding device, which is used to convey oil pipes to the feeding device;

[0042] The feeding device is used to transfer nuts and oil pipes to the upper tube mechanism;

[0043] A heating device is mounted on the frame. The heating device includes a heating chamber and a heating gun. The heating chamber has several heating chambers for placing oil pipes. The heating end of the heating gun faces the heating chamber to heat different positions of the oil pipes.

[0044] Through the above technical solution, the nut feeding device and the oil pipe feeding device respectively transport the nut and the oil pipe to the corresponding loading station. The loading device transfers the nut and the oil pipe and pre-installs them in the material preparation trough of the pipe loading mechanism. During the loading process, the oil pipe is first moved to the heating station. The heating gun precisely heats specific parts of the oil pipe placed in the heating chamber to improve its plasticity, realizing full automation of the automatic loading process and improving production efficiency and the stability of bending quality.

[0045] Preferably, the feeding device includes:

[0046] A feeding rack is mounted on the frame;

[0047] The feeding mechanism is slidably mounted on the feeding frame. The feeding mechanism includes a frame, feeding component one, feeding component two, and feeding component three. The lower part of feeding component one is provided with feeding clamp one for obtaining nuts. The lower parts of feeding component two and feeding component three are respectively provided with feeding clamp two for obtaining oil pipes.

[0048] A feeding drive unit is mounted on the feeding rack. The feeding drive unit drives the feeding mechanism to move between a third position and a fourth position. When the feeding mechanism is in the third position, feeding component one drives feeding clamp one to move to place a nut into the preparation trough, feeding component two drives feeding clamp two to move to clamp the heated oil pipe, and feeding component three drives feeding clamp three to move to clamp the oil pipe from the outlet of the oil pipe feeding device. When the feeding mechanism is in the fourth position, feeding clamp one clamps another nut from the outlet of the nut feeding device, feeding clamp two places the heated oil pipe through the nut in the preparation trough, and feeding clamp three places the oil pipe into the heating chamber.

[0049] Through the above technical solution, the feeding drive unit drives the entire feeding mechanism to move between the third and fourth positions. When the feeding mechanism is in the third position, feeding component one places the nut in the preparation trough, feeding component three simultaneously picks up the new oil pipe from the feeding point, while feeding component two picks up the oil pipe that has been heated. When the feeding mechanism moves to the fourth position, feeding component one picks up the new nut, feeding component two assembles the heated oil pipe with the nut in the preparation trough, and feeding component three puts the new oil pipe into the heating chamber. This design integrates the four key processes of nut gripping, oil pipe gripping, hot pipe feeding, and assembly into a reciprocating cycle, optimizes the cycle time, and improves the automation level and cycle efficiency of the entire production line.

[0050] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0051] 1. This technical solution uses an upper tube mechanism to drive the nut and oil pipe assembly to move downwards, a top bending mechanism to advance horizontally, and rollers to contact the oil pipe with concave arc grooves and roll to apply pressure, so that the suspended section of the oil pipe is plastically bent along the arc surface of the bend seat to a predetermined angle. Through the vertical positioning of the upper tube mechanism and the horizontal bending of the top bending mechanism, automatic continuous operation is achieved, improving accuracy and efficiency.

[0052] 2. This technical solution uses a top-bending drive component to push the top-bending seat forward in a straight line, which drives the lifting angle seat and the top-bending roller to move synchronously. The tilting platform at the bottom of the lifting angle seat rolls against the tilting wheel of the bending pipe seat. The tilting wheel rolls from low to high along the tilting arc surface, which forces the lifting angle to rotate and lift around the hinge point. After horizontal bending, the top-bending roller presses through the bending section along the arc direction of the pipe arc groove, effectively suppressing rebound and achieving a precise and controllable bending trajectory. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall structure of the automatic bending device in the embodiment.

[0054] Figure 2 This is a schematic diagram of the overall structure of the automatic bending equipment in the embodiment, excluding the oil pipe bending device;

[0055] Figure 3This is a schematic diagram of the overall structure of the oil pipe bending device in the embodiment;

[0056] Figure 4 This is a schematic diagram of the operating state of the upper pipe seat in the second position in the oil pipe bending device of the embodiment;

[0057] Figure 5 This is a partially enlarged schematic diagram of the conduit assembly in the tubing bending device of the embodiment;

[0058] Figure 6 This is a partially enlarged schematic diagram of the material preparation trough in the oil pipe bending device of the embodiment;

[0059] Figure 7 This is a schematic diagram of the oil pipe bending device from another perspective in the embodiment;

[0060] Figure 8 Example of an oil pipe bending device Figure 7 A magnified view of a portion of point A in the middle;

[0061] Figure 9 This is a partial structural diagram of the top bending mechanism and the pipe bending seat in the oil pipe bending device of the embodiment;

[0062] Figure 10 Example of an oil pipe bending device Figure 9 Enlarged sectional view;

[0063] Figure 11 This is a schematic diagram of the overall components of the pipe bending mold base in the oil pipe bending device of the embodiment.

[0064] Reference numerals: 1. Machine base; 2. Upper pipe mechanism; 21. Upper pipe seat; 22. Fixed pipe assembly; 221. Fixed pipe clamp; 222. Fixed pipe fixture; 223. Fixed pipe drive component; 23. Upper pipe drive component; 3. Bending seat; 31. Bending mold seat; 4. Top bending mechanism; 41. Top bending seat; 42. Lifting angle seat; 43. Top bending drive component; 5. Material preparation groove; 51. Material preparation groove one; 52. Material preparation groove II; 6. Pipe arc groove; 61. Groove section one; 62. Groove section two; 7. Top bend roller; 8. Concave arc groove; 9. Inclined platform; 91. Inclined arc surface; 10. Inclined wheel; 111. Clearance groove one; 112. Clearance groove two; 12. Conduit assembly; 121. Conduit seat; 122. Conduit clamp; 1221. Clamp seat; 1222. Clamp block; 1223. Elastic element; 123. Conduit drive component 13. Pipe clamping channel; 14. Pipe pressing assembly; 141. Guide frame; 142. Pipe pressing rod; 143. Pipe pressing drive component; 15. Nut feeding device; 16. Oil pipe feeding device; 17. Feeding device; 171. Feeding rack; 1721. Frame body; 1722. Feeding assembly one; 1723. Feeding assembly two; 1724. Feeding assembly three; 173. Feeding drive component; 181. 182. Loading clamp 1; 183. Loading clamp 2; 184. Loading clamp 3; 19. Guide arc surface; 20. Heating device; 201. Heating seat; 202. Heating gun; 24. Discharge chute; 25. Discharge assembly; 251. Discharge drive component; 252. Discharge push block; 26. Pushing part; 27. Heating chamber; 101. Frame; 100. Nut; 200. Oil pipe; 300. Discharge slide plate. Detailed Implementation

[0065] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0066] Example:

[0067] See Figure 3 and Figure 6 An oil pipe bending device is capable of processing at least two oil pipes 200 simultaneously. It includes a base 1, an upper pipe mechanism 2, a bending seat 3, and a top bending mechanism 4. The upper pipe mechanism 2 is used to assemble the nut 100 and the oil pipe 200 for feeding. The bending seat 3 and the top bending mechanism 4 cooperate to perform bending operations on the oil pipe.

[0068] The upper tube mechanism 2 includes an upper tube seat 21, a fixed tube assembly 22, and an upper tube drive component 23. The upper tube seat 21 is located on the front side of the machine base 1 and is slidably connected to the machine base 1 via a slide rail structure, with the sliding direction being vertical. The upper tube drive component 23 is mounted on the machine base 1 and is used to drive the upper tube seat 21 to move between a first position and a second position. Figure 3 When the upper pipe seat 21 is in the first position, the nut 100 and the oil pipe 200 are assembled; see Figure 4When the upper pipe seat 21 is in the second position, the oil pipe 200 is in the bending position.

[0069] The pipe fixing assembly 22 is installed on the side of the upper pipe seat 21 away from the machine base 1. Two sets of the assembly are symmetrically arranged. Each set of the pipe fixing assembly 22 includes a pipe fixing plate 221, a pipe fixing clamp 222, and a pipe fixing drive 223. The pipe fixing clamp 222 has an L-shaped structure and is connected to the output shaft of the pipe fixing drive 223 on the side away from the upper pipe seat 21. It extends laterally toward the position of the pipe fixing plate 221. The pipe fixing clamp 222 is movable relative to the pipe fixing plate 221, and the direction of movement is perpendicular to the sliding direction of the upper pipe seat 21. The pipe fixing plate 221 is provided with a material preparation groove 51, which is opened on the front side of the pipe fixing plate 221 near the pipe fixing clamp 222. The groove shape of the material preparation groove 51 matches that of the nut 100. It has an opening that extends vertically through the top of the pipe clamp 221. The pipe clamp 222 has a material preparation groove 52 recessed at the position corresponding to the material preparation groove 51, and its groove shape matches that of the nut 100. The nut 100 is first inserted into the material preparation groove 51 through the opening and abuts against the bottom of the groove. The pipe clamp 223 is used to drive the pipe clamp 222 to move back and forth. The pipe clamp 222 moves toward the pipe clamp 221, so that the material preparation groove 51 and the material preparation groove 52 are spliced ​​together to form the material preparation groove 5, which confines the nut 100 in the material preparation groove 5, thus completing the material preparation of the nut 100.

[0070] See Figure 3 , Figure 4 and Figure 5 The upper tube seat 21 is also provided with a conduit assembly 12, which is provided in two. The two conduit assemblies 12 are arranged one-to-one with the two fixed tube assemblies 22. Each conduit assembly 12 includes a conduit seat 121, a conduit clamp 122 and a conduit drive 123. The conduit seat 121 is located above the fixed tube clamp 221 and is slidably connected to the upper tube seat 21 through a slide rail slide block structure. The sliding direction is perpendicular to the sliding direction of the upper tube seat 21 and the fixed tube clamp 222.

[0071] The catheter clamp 122 is installed at the lower part of the corresponding catheter seat 121. It includes a clamp seat 1221, two clamp blocks 1222, and several elastic elements 1223. The clamp seat 1221 is fixed to the catheter seat 121. The two clamp blocks 1222 are symmetrically arranged in the installation space inside the catheter seat 121. Both clamp blocks 1222 are slidably connected to the catheter seat 121 through a slide rail slide block structure, and the sliding direction is parallel to the sliding direction of the catheter seat 121. A clamping channel 13 for the oil supply pipe is left between the two clamp blocks 1222. The clamp blocks 1222 have a guide arc surface 19. The arc direction of the guide arc surfaces 19 on both sides makes the clamping channel 13 flared outward. The two ends of several elastic elements 1223 respectively abut against the corresponding inner sidewalls of the clamp blocks 1222 and the catheter seat 121. The elastic force pushes the clamp blocks 1222 on both sides to move towards each other and move closer together, which is used to adjust the size of the clamping channel 13.

[0072] The conduit drive 123 is used to drive the conduit seat 121 to move left and right, so as to drive the conduit clamp 122 to move synchronously. When the conduit assembly 12 is needed, the conduit drive 123 drives the conduit seat 121 to move above the fixed pipe clamp 221. At this time, the position of the clamping channel 13 is aligned with the material preparation trough 5. The lower end of the vertically falling oil pipe pushes against the guide arc surface 19 on both sides, while the two clamp blocks 1222 avoid each other. The oil pipe enters the clamping channel 13 through the flared opening. The elastic force continuously pushes the clamp blocks 1222 on both sides to apply clamping force to the oil pipe, so that it is gently clamped and centered, ensuring that the oil pipe maintains verticality during the process of aligning the nut and descending, thereby optimizing the accuracy of the oil pipe and nut insertion.

[0073] The upper tube seat 21 is also provided with a tube clamping assembly 14, which includes a guide frame 141, a tube clamping rod 142, and a tube clamping drive 143. The guide frame 141 is mounted above the guide tube assembly 12 and is fixedly installed on the front side of the upper tube seat 21. There are two tube clamping rods 142, which are arranged one-to-one with the two guide tube assemblies 12. The tube clamping rods 142 are movably inserted through the guide frame 141, and their movement direction is parallel to the movement direction of the upper tube seat 21. There are two tube clamping drive 143, which drive the corresponding tube clamping rods 142 to move up and down. When the tube clamping rod 142 is aligned with the clamping channel 13, the tube clamping rod 142 presses against and pushes the oil pipe downward, so that the oil pipe can pass smoothly through the clamping channel 13, increasing the speed at which the oil pipe passes through the clamping channel 13, and completing the assembly of the oil pipe and the nut.

[0074] See Figure 6 and Figure 9The pipe bending seat 3 is located below the upper pipe mechanism 2 and is installed on the machine base 1. The pipe bending seat 3 is provided with a pipe bending mold seat 31, which is detachably connected to the top of the front end of the pipe bending seat 3 by bolt structure. The pipe bending mold seat 31 has two unloading grooves 24 corresponding to the two material preparation grooves 51. The grooves are semi-circular and the inner arc surface of the unloading groove 24 is less than or equal to 180°. The pipe bending mold seat 31 is provided with at least two pipe arc grooves 6, which are provided one-to-one with the two material preparation grooves 5. The pipe arc grooves 6 are V-shaped.

[0075] See Figure 10 and Figure 11 Each pipe arc groove 6 includes a first groove segment 61 and a second groove segment 62. The first groove segment 61 and the second groove segment 62 are connected. The first groove segment 61 is vertically continuous. The second groove segment 62 has an included angle α with respect to the first groove segment 61. α is greater than or equal to 90 degrees. In this embodiment, α is preferably 120°. When the upper pipe seat 21 is in the second position, the front part of the nut is placed in the unloading groove 24 for further positioning, and the front part of the oil pipe is placed in the first groove segment 61. The pipe bending mold seat 31 also has a first clearance groove 111 and a second clearance groove 112 corresponding to the pipe arc groove 6. The second clearance groove 112 is connected to the pipe arc groove 6.

[0076] See Figures 7-10 The bending mechanism 4 includes a bending seat 41, a lifting angle seat 42, and a bending drive component 43. The bending pipe seat 3 is mounted above the bending seat 41. The bending seat 41 is slidably connected to the base 1 via a slide rail structure. The sliding direction is horizontally forward and backward. The lifting angle seat 42 is hinged to the bending seat 41, and its hinge shaft is located at the rear end of the lifting angle seat 42, so that the lifting angle seat 42 swings relative to the bending pipe seat 3. The front end of the lifting angle seat 42 is rotatably connected to a bending roller 7. There are two rollers, and the two bending rollers 7 are arranged one-to-one with the two pipe arc grooves 6. Each bending roller 7 has a concave arc groove 8 along the circumferential direction.

[0077] The lifting seat 42 is provided with two tilting platforms 9, which are located on opposite sides of the lifting seat 42 along the sliding direction of the top bending seat 41. The lower end face of each tilting platform 9 has a tilting arc surface 91. The bending seat 3 is rotatably connected to two tilting wheels 10, which are set one-to-one with the two tilting platforms 9. The top bending drive 43 is installed on the base 1, and its output end is connected to the top bending seat 41 to drive the top bending seat 41 to move back and forth. During the forward movement of the top bending seat 41, the lowest point of the tilting arc surface 91 first contacts the corresponding tilting wheel 10. The tilting wheel 10 rotates and abuts against the tilting arc surface 91, so that it moves from the lowest point to the highest point along the arc surface direction. During this process, the lifting seat 42 rotates accordingly, thereby driving the top bending roller 7 to lift up. The top bending roller 7 enters the first clearance groove 111, and at the same time, it presses the oil pipe to bend into the second groove section 62, thereby completing the bending operation of the oil pipe.

[0078] See Figure 9 and Figure 10 During unloading, the fixed pipe drive 223 drives the fixed pipe clamp 222 to release its grip on the nut, and the upper pipe drive 23 drives the upper pipe seat 21 to move upward. The fixed pipe clamp 221 lifts the nut through the bottom of the material preparation groove 51, causing the nut to swing towards the unloading groove 24. After the fixed pipe clamp 221 is no longer obstructing the nut, the nut and the oil pipe assembly swing back in the opposite direction due to their center of gravity, detach from the unloading groove 24 and fall onto the inclined unloading slide plate 300 below, and then fall into the unloading bin along the unloading slide plate 300. The machine base 1 is also equipped with an unloading assembly. 25, which includes a feeding drive 251 and a feeding push block 252. The feeding push block 252 has a pushing part 26, which protrudes from the lower part of the feeding push block 252 away from the front side of the feeding drive 251. The feeding drive 251 drives the feeding push block 252 to move back and forth. Its moving direction is parallel to the sliding direction of the top bending seat 41. The feeding push block 252 is close to the bending die seat 31. The feeding push block 252 pushes the oil pipe through the pushing part 26. The applied pushing force further drives the nut to disengage from the feeding groove 24, avoiding the defect that the workpiece is too heavy to be removed by gravity.

[0079] The specific work process of this plan is as follows:

[0080] This technical solution involves pre-installing a nut in the material preparation groove 5, with the oil pipe passing through the inner hole of the nut. The upper tube mechanism 2 carries the nut and oil pipe downwards, allowing the front part of the oil pipe to be precisely engaged in the pipe arc groove 6 of the bending seat 3 for initial positioning. The top bending mechanism 4 moves forward horizontally, causing the top bending roller 7 to move towards the oil pipe. After the concave arc groove 8 on the periphery of the roller contacts the oil pipe, it rolls while continuously applying pressure. The suspended section of the oil pipe is plastically bent against the arc surface of the bending seat 3 until the oil pipe is bent to a predetermined angle that matches the pipe arc groove 6. The entire process is achieved through the coordinated vertical feeding and positioning of the upper tube mechanism 2 and the horizontal feeding and bending action of the top bending mechanism 4, realizing automated continuous operation from material preparation to forming, improving bending accuracy and production efficiency.

[0081] See Figure 1 and Figure 2 An automatic bending device includes a frame 101, an oil pipe bending device installed in the middle of the frame 101, a nut feeding device 15, an oil pipe feeding device 16, a feeding device 17, and a heating device 20. The nut feeding device 15 and the oil pipe feeding device 16 are located on the left and right sides of the oil pipe bending device, respectively. The nut feeding device 15 feeds nuts to the feeding device 17 through a vibrating plate structure, and the oil pipe feeding device 16 feeds oil pipes to the feeding device 17 through a vibrating plate structure.

[0082] The heating device 20 includes a heating base 201 and a heating gun 202. The heating base 201 is installed on the frame 101 between the oil pipe bending device and the oil pipe feeding device 16. The heating gun 202 is located above the heating base 201 and is fixedly installed on the side wall of the base 1 near the heating base 201. The heating base 201 is provided with several heating chambers 27 for placing oil pipes. There are four heating chambers 27. The heating end of the heating gun 202 faces the heating chamber 27. The heating end of the heating gun 202 can change its angle to heat different positions of the oil pipe. The heating gun 202 shown in this embodiment can output a maximum heating of about 1400°.

[0083] The feeding device 17 includes a feeding frame 171, a feeding mechanism, and a feeding drive component 173. The feeding frame 171 is mounted on the frame 101 and is located in front of the oil pipe bending device. The feeding mechanism is slidably connected to the upper part of the feeding frame 171 and includes a frame body 1721, a first feeding component 1722, a second feeding component 1723, and a third feeding component 1724. The position of the first feeding component 1722 corresponds to that of the nut feeding device 15, and the third feeding component 1724... The position corresponds to the oil pipe feeding device 16. The second feeding component 1723 is located between the first feeding component 1722 and the third feeding component 1724. The first feeding component 1722, the second feeding component 1723 and the third feeding component 1724 are slidably connected to the frame 1721 through the slide rail and slide block structure. The sliding direction is set horizontally. The frame 1721 connects the three feeding components in sequence as a whole, so that the feeding drive component 173 can drive the three components to move as a whole.

[0084] The lower part of the feeding assembly 1722 is provided with a feeding clamp 181 for picking up nuts. There are at least two feeding clamps 181, so that two nuts can be clamped at a time. The lower parts of the feeding assembly 2 1723 and the feeding assembly 3 1724 are respectively provided with a feeding clamp 2 182 and a feeding clamp 3 183 for picking up oil pipes. There are at least two feeding clamps 2 182 and a feeding clamp 3 183, so that at least two oil pipes can be clamped at a time. Each feeding assembly can drive the corresponding feeding clamp to move up and down.

[0085] The feeding drive 173 drives the feeding mechanism to move between the third and fourth positions. When the feeding mechanism is in the third position, the feeding component 1722 is aligned with the oil pipe bending device, which drives the two feeding clamps 181 to place two nuts into the material preparation trough 5. The feeding component 2723 is aligned with the heating device 20, which drives the two feeding clamps 282 to clamp the two heated oil pipes. The feeding component 3724 is aligned with the oil pipe feeding device 16, which drives the two feeding clamps 383 to clamp the two oil pipes from the outlet of the oil pipe feeding device 16.

[0086] When the feeding mechanism moves to the fourth position, the feeding assembly 1722 aligns with the nut feeding device 15, and the two feeding clamps 181 clamp two more nuts from the discharge port of the nut feeding device 15; the feeding assembly 2723 aligns with the oil pipe bending device, and the two feeding clamps 182 insert the two heated oil pipes into the two nuts so that the conduit assembly 12 and the pressure pipe assembly 14 can be assembled; the feeding assembly 3724 aligns with the heating device 20, and the two feeding clamps 183 place the two oil pipes into the two heating chambers 27 so that the heating device 20 can heat them.

[0087] The specific work process of this plan is as follows:

[0088] This technical solution uses a nut feeding device 15 and an oil pipe feeding device 16 to transport nuts and oil pipes to their respective loading stations. The loading device 17 then transfers the nuts and oil pipes and pre-installs them in the material preparation trough 5 of the pipe loading mechanism 2. During the loading process, the oil pipes are first moved to the heating station. The heating gun 202 precisely heats specific parts of the oil pipes placed in the heating chamber 27 to improve their plasticity, thus achieving full automation of the automatic loading process and improving production efficiency and the stability of bending quality.

[0089] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A tubing bender device comprising a machine base (1), characterized in that, Also include: The upper pipe mechanism (2) is movably arranged on the base (1), and a plurality of spare slots (5) for carrying nuts and oil pipes are arranged on the upper pipe mechanism (2); The pipe bending seat (3) is arranged on the base (1), and the pipe bending seat (3) is provided with pipe arc grooves (6) corresponding to the spare slots (5); and The top bending mechanism (4) includes a top bending seat (41) slidingly arranged on the base (1), a corner lifting seat (42) hingedly connected to the top bending seat (41), and a top bending driving member (43), the corner lifting seat (42) is rotatably connected with a top bending roller (7) corresponding to the pipe arc groove (6), the top bending roller (7) has a concave arc groove (8) along the circumference, the bottom of the corner lifting seat (42) is provided with an inclination table (9), the inclination table (9) has an inclination arc surface (91), the pipe bending seat (3) is rotatably connected with an inclination wheel (10) corresponding to the inclination table (9), and the top bending driving member (43) is used for driving the top bending seat (41) to move back and forth. The upper pipe mechanism (2) includes an upper pipe seat (21) slidingly connected to the base (1), a pipe fixing assembly (22), and an upper pipe driving member (23), the pipe fixing assembly (22) includes a pipe fixing clamp plate (221) arranged on the upper pipe seat (21), a pipe fixing clamp (222), and a pipe fixing driving member (223), the pipe fixing clamp (222) is movably connected to the output end of the pipe fixing driving member (223), the pipe fixing clamp plate (221) is provided with a spare groove one (51), the pipe fixing clamp (222) is correspondingly recessed with a spare groove two (52), and the upper pipe driving member (23) drives the upper pipe seat (21) to move between a first position and a second position, and the moving direction of the upper pipe seat (21) is perpendicular to the moving direction of the top bending seat (41). When the upper pipe seat (21) is in the first position, the pipe fixing driving member (223) drives the pipe fixing clamp (222) to move towards the pipe fixing clamp plate (221), the spare groove one (51) is close to the spare groove two (52) to splice to form the spare slot (5), and the spare slot (5) is used for defining the nut vertically penetrating the oil pipe; when the upper pipe seat (21) moves to the second position, the oil pipe is placed in the corresponding part of the pipe arc groove (6) downward, the top bending driving member (43) drives the top bending seat (41) to move towards one side of the pipe bending seat (3), the inclination wheel (10) rotates along the inclination arc surface (91) to abut, the inclination arc surface (91) guides the corner lifting seat (42) to rotate to lift a certain angle, so that the top bending roller (7) abuts against the oil pipe to bend along the groove of the pipe arc groove (6).

2. A tubing bender as claimed in claim 1, characterized in that: The pipe arc groove (6) includes a groove segment one (61) and a groove segment two (62), the groove segment one (61) and the groove segment two (62) are communicated, and the included angle between the groove segment two (62) and the groove segment one (61) is greater than or equal to 90 degrees.

3. A tubing bender as defined in claim 1, wherein: The elbow seat (3) is detachably connected with an elbow die seat (31), the elbow die seat (31) is provided with the pipe arc groove (6), the elbow die seat (31) is provided with a blanking groove (24) corresponding to the material preparation groove (51), the elbow die seat (31) is provided with a first avoiding groove (111) for avoiding the lifting of the top bending roller (7), and the elbow die seat (31) is also provided with a second avoiding groove (112) for avoiding the oil pipe bending section.

4. A tubing bender as claimed in claim 3, wherein: The machine base (1) is provided with a blanking assembly (25), the blanking assembly (25) comprises a blanking driving element (251) and a blanking push block (252), the blanking push block (252) is slidably arranged relative to the machine base (1), the blanking push block (252) protrudes a pushing part (26), and the blanking driving element (251) is used for driving the blanking push block (252) to move towards the direction of the elbow die seat (31), so that the pushing part (26) pushes the oil pipe and the nut away from the blanking groove (24) to blank.

5. A tubing bender as claimed in claim 3, wherein: The upper pipe seat (21) is provided with a pipe guide assembly (12), the pipe guide assembly (12) comprises: A pipe seat (121) is slidably arranged on the upper pipe seat (21); A pipe clamp (122) is arranged on the lower part of the pipe seat (121), the pipe clamp (122) comprises a clamp seat (1221), two clamp blocks (1222) slidably arranged in the clamp seat (1221), and a plurality of elastic elements (1223), a pipe clamping channel (13) for the oil pipe to pass through is formed between the two clamp blocks (1222), the clamp blocks (1222) have arc guide surfaces (19), the arc surface directions of the two arc guide surfaces (19) are such that the pipe clamping channel (13) is outwardly flared, and the elastic elements (1223) have a tendency to move close to each other by the elastic force, and are used for adjusting the size of the pipe clamping channel (13); A pipe guide driving element (123) is used for driving the pipe seat (121) to move, the sliding direction of the pipe seat (121) is perpendicular to the sliding direction of the upper pipe seat (21), the pipe clamping channel (13) is arranged in alignment with the material preparation groove (5), and the oil pipe can be guided to the material preparation groove (5) through the pipe clamping channel (13).

6. A tubing bender as claimed in claim 5, wherein: The upper pipe seat (21) is provided with a pipe pressing assembly (14), the pipe pressing assembly (14) comprises: A guide frame (141) is arranged above the pipe guide assembly (12); A pipe pressing rod element (142) is movably arranged on the guide frame (141), and the position of the pipe pressing rod element (142) is arranged in alignment with the pipe clamping channel (13); A pipe pressing driving element (143) is connected to the pipe pressing rod element (142) at the output end, and is used for driving the pipe pressing rod element (142) to descend, so that the pipe pressing rod element (142) presses and pushes the oil pipe to pass through the pipe clamping channel (13) downwards.

7. An automatic bending apparatus comprising a frame (101), characterized in that: Further comprising the oil pipe bending device of any one of claims 1-6, further comprising: A nut feeding device (15) for feeding the nut to the feeding device; An oil pipe feeding device (16) for feeding the oil pipe to the feeding device; A feeding device (17) is arranged to transfer the nut and the oil pipe to the upper pipe mechanism (2); A heating device (20) is arranged on the frame (101), the heating device (20) comprises a heating seat (201) and a heating gun (202), the heating seat (201) is provided with a plurality of heating bins (27) for placing the oil pipe, and the heating end of the heating gun (202) faces the heating bin (27) and is used for heating different positions of the oil pipe.

8. The automatic bending apparatus according to claim 7, characterized by: The feeding device (17) comprises: A feeding rack (171) is arranged on the frame (101); A feeding mechanism is slidingly arranged on the feeding rack (171), the feeding mechanism comprises a rack body (1721), a feeding assembly one (1722), a feeding assembly two (1723) and a feeding assembly three (1724), the lower part of the feeding assembly one (1722) is provided with a feeding clamp one (181) for obtaining the nut, and the lower parts of the feeding assembly two (1723) and the feeding assembly three (1724) are respectively provided with a feeding clamp two (182) and a feeding clamp three (183) for obtaining the oil pipe; A feeding driving member (173) is arranged on the feeding rack (171), the feeding driving member (173) drives the feeding mechanism to move between the third position and the fourth position, when the feeding mechanism is in the third position, the feeding assembly one (1722) drives the feeding clamp one (181) to move for placing the nut into the standby groove (5), the feeding assembly two (1723) drives the feeding clamp two (182) to move for clamping the heated oil pipe, and the feeding assembly three (1724) drives the feeding clamp three (183) to move for clamping the oil pipe from the discharge port of the oil pipe feeding device (16); when the feeding mechanism moves to the fourth position, the feeding clamp one (181) clamps another nut from the discharge port of the nut feeding device (15), the feeding clamp two (182) passes the heated oil pipe on the nut in the standby groove (5), and the feeding clamp three (183) places the oil pipe into the heating bin (27).

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