A pipe bending machine loading weld positioning structure

Abstract

This utility model discloses a welding seam positioning structure for a pipe bending machine, including a frame with a conveying channel, a material storage mechanism near the inlet end of the conveying channel, a blocking device near the outlet end of the conveying channel, a rotating device for adjusting the angle of the metal pipe, and a color difference detector for detecting the position of the metal. The rotating device clamps the metal pipe and drives it to rotate, while the color difference detector detects the color difference of the position of the metal pipe. Using silver as the reference color, when the metal pipe rotates a certain angle, the color difference detector detects black, which is the position of the weld. At this time, the rotating device stops. The characteristic of color difference is used for precise positioning to avoid the weld from cracking due to bending.

Description

Technical Field

[0001] This utility model belongs to the field of pipe bending machine technology, specifically a pipe bending machine feeding weld seam positioning structure. Background Technology

[0002] Pipe bending machines are mainly used to bend metal pipes. After bending, the metal pipes are widely used in handles and support seats in chairs or sports equipment. To improve safety, automation, and efficiency, pipe bending machines are usually equipped with feeding devices, such as the publicly available technical document "CN117244977A, a vertical automatic feeding double-head pipe bending integrated machine". Although the bending machine can achieve automatic feeding, some metal pipes are formed by rolling metal plates and then welding them. The weld seam is relatively fragile, and the weld seam runs through the entire length of the metal pipe. Therefore, the bending position is particularly important. If the bending position is not correct, cracks will appear at the weld seam, affecting the quality of the finished product or making it scrapped. Utility Model Content

[0003] The purpose of this utility model is to provide a positioning structure for the welding seam of a pipe bending machine, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A welding seam positioning structure for a pipe bending machine includes a frame, a conveying channel in the frame, a material storage mechanism near the inlet end of the conveying channel, a blocking device near the outlet end of the conveying channel, a rotating device for adjusting the angle of the metal pipe, and a color difference detector for detecting the position of the metal.

[0006] In a further technical solution, the storage mechanism includes a winding device, which extends at least two strips for storing metal tubes.

[0007] In a further technical solution, the rotating device includes a second fixed frame mounted on a frame, and a third drive assembly, a first slide, and a second slide are mounted on the second fixed frame;

[0008] The first slide block and / or the second slide block are slidably connected to the second fixed frame, and the third drive assembly is used to drive the first slide block and / or the second slide block to slide.

[0009] A fourth drive assembly is installed on the first slide, and the output end of the fourth drive assembly is provided with a first movable pressing part. A second movable pressing part is rotatably connected to the second slide.

[0010] In a further technical solution, there are two fourth drive components, and each fourth drive component has a movable top pressure part at its output end, with the second movable top pressure part corresponding to the first movable top pressure part.

[0011] In a further technical solution, a buffer assembly is provided at the second movable top pressure part.

[0012] In a further technical solution, the blocking device is provided with a waiting position, two first fixed railings are symmetrically provided at the end of the waiting position, and two third cylinders are symmetrically installed. The output end of the third cylinder is equipped with a lifting plate, and the lifting plate is provided with at least one positioning groove.

[0013] In a further technical solution, the blocking device includes a second fixed railing near the outlet of the conveying channel, a fourth cylinder located between the first and second fixed railings, and a movable rod at the output end of the fourth cylinder.

[0014] The beneficial effects of this utility model are:

[0015] The metal tube is clamped by a rotating device and rotated. At the same time, a color difference detector detects the positional color difference of the metal tube. Silver is used as the reference color. When the metal tube rotates to a certain angle, the color difference detector detects black, which is the position of the weld. At this time, the rotating device stops. The characteristic of color difference is used for precise positioning to avoid bending and causing the weld to crack.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] Figure 1 The overall three-dimensional structure of this utility model Figure 1 .

[0018] Figure 2 : A diagram of the blocking assembly structure of this utility model.

[0019] Figure 3 : Structural diagram of the winding device of this utility model.

[0020] Figure 4 The overall three-dimensional structure of this utility model Figure 2 .

[0021] Figure 5 : Structural diagram of the rotating device of this utility model.

[0022] Figure 6 : Overall front view of this utility model.

[0023] Reference numerals: 1-Frame, 11-Conveying channel, 12-Horizontal extension, 13-Fixed rod, 14-Third cylinder, 15-Lifting plate, 16-Positioning groove, 17-Alignment device, 2-Blocking device, 21-Second fixed railing, 22-First fixed railing, 24-Fourth cylinder, 25-Modible rod, 3-Rewinding device, 31-First fixed frame, 32-First drive assembly, 33-First transmission shaft, 34-Rewinding reel, 35-Transition roller, 36-Limiting frame, 41-Belt body, 42- Connector, 51-Upper fixed plate, 52-Lower fixed plate, 53-First cylinder, 54-Pressure head, 55-Second cylinder, 56-Top pressing component, 61-Synchronous pulley, 62-Conveyor belt, 63-Second drive assembly, 64-Second transmission shaft, 7-Rotating device, 71-Second fixed frame, 72-Third drive assembly, 73-First slide, 74-Second slide, 75-Fourth drive assembly, 76-First movable top pressing part, 77-Second movable top pressing part, 78-Buffer assembly, 8-Color difference detector. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please refer to Figure 1-6 ;

[0026] The bending pipe feeding mechanism described in this utility model aims to reduce labor and improve safety and bending quality. Specifically, it includes a frame 1, in which a conveying channel 11 is provided. The height of the conveying channel 11 limits the entry of metal pipes to side by side. A blocking device 2 is provided near the outlet end of the conveying channel 11, and a storage mechanism is provided near the inlet end of the conveying channel 11. The storage mechanism typically includes a winding device 3, which extends at least two belts 41.

[0027] In the prior art, the conveying channel 11 has a certain height, and the two ends of the belt body 41 are connected to different devices and cannot be loosened. Therefore, when adding materials, it is necessary to manually lift the metal pipe and insert it into the belt body 41. In this embodiment, the end of the belt body 41 is provided with a connector 42, and the connector 42 is detachably connected to the horizontal extension 12 at the upper end of the frame 1.

[0028] When replenishment is needed, first remove the connector 42 from the horizontal extension 12, and place the belt body 41 flat on the bottom surface. At this time, the metal tube can be placed on top of the belt body 41 by equipment or manually. It should be noted that although manual operation may still be required here, the metal tube does not need to be raised too high to complete the operation, which greatly reduces the labor intensity and improves the replenishment efficiency. After the connector 42 is removed, the belt body 41 is in a low position, which facilitates the stable placement of the metal tube and avoids the safety hazards caused by high-altitude handling. If a large number of metal tubes are transported at once using tools such as a flatbed trolley, they can be poured directly on top of the belt body 41, making the operation more convenient. After replenishment is completed, use external tools to re-fix the connector 42 to the horizontal extension 12. The whole process is simple to operate and highly safe.

[0029] Then, the belt 41 is gradually contracted by the winding device 3, while the metal tube is lifted and gradually enters the conveying channel 11. After the metal tube reaches the other end of the conveying channel 11, it is blocked by the blocking device 2 and stops. At this time, the metal tube is picked up by a robot or other device and sent into the pipe bending machine to complete the conveying process.

[0030] It should be noted that an alignment device 17 is also installed in the frame 1, which consists of two symmetrical cylinders and a baffle. The metal tubes are aligned by the two cylinders driving the baffle to contract. This is a common technical means in the field and will not be described in detail here.

[0031] In this embodiment of the utility model, the connector 42 is a hook, and the horizontal extension 12 is provided with a fixing rod 13 for fixing the hook. The hook is used to facilitate disassembly and fixing.

[0032] In this embodiment of the present invention, the conveying channel 11 has at least one section that is inclined. Alternatively, the entire conveying channel 11 can be inclined, or a section near the inlet can be horizontal while a section near the outlet is inclined. The conveying channel 11 comprises at least two upper fixing plates 51 and two lower fixing plates 52. It should be noted that the upper fixing plates 51 and lower fixing plates 52 do not necessarily correspond; they can be misaligned. Near the outlet of the conveying channel 11, a first cylinder 53 is installed on the side of the upper fixing plate 51, preferably located on one of the two upper fixing plates. Each side of plate 51 is provided with a first cylinder 53, the output end of the first cylinder 53 faces the conveying channel 11, and a pressure head 54 is installed at the output end of the first cylinder 53; a space of at least one metal pipe width is reserved between the outlet of the conveying channel 11 and the blocking device 2, and a second cylinder 55 is installed below the space. Preferably, the second cylinder 55 is installed on the side of the lower fixed plate 52, and can also be provided on both lower fixed plates 52. The output end of the second cylinder 55 faces the conveying channel 11, and a top pressing member 56 is installed at the output end of the second cylinder 55.

[0033] Initially, the metal tubes enter the conveying channel 11 side by side and stop at the outlet due to obstruction by the blocking device 2. One metal tube is located in the reserved space. Preferably, this section of the conveying channel 11 is inclined. First, the first cylinder 53 extends the pressure head 54 to press the second metal tube so that it cannot move. The metal tube in the reserved space is unrestricted. It should be noted that the second cylinder 55 is inclined. Then, the second cylinder 55 pushes the top pressing member 56 to extend into the reserved space, raising the first metal tube higher than the blocking device 2. It slides down behind the blocking device 2 due to the inertia of the inclination, making it easier to pick up. Finally, the first cylinder 53 and the second cylinder 55 reset, releasing the restriction on the second metal tube, allowing it to slide down and stop under the restriction of the blocking device 2.

[0034] One embodiment of the present invention relates to the winding device 3, see reference to Figure 3 Specifically, it includes a first fixed frame 31, in which a first drive assembly 32 is installed. The output end of the first drive assembly 32 is connected to a first transmission shaft 33. The two ends of the first transmission shaft 33 are respectively connected to a take-up reel 34. The belt 41 is wound on the take-up reel 34. Of course, a transition roller 35 can also be provided, which is closer to the entrance of the conveying channel 11. A limit frame 36 is provided at the output end of the take-up reel 34. The belt 41 passes through the limit frame 36 to prevent the belt 41 from detaching from the take-up reel 34. When feeding is required, the first drive assembly 32 and the first transmission shaft 33 drive the take-up reel 34 to rotate, causing the belt 41 to gradually shrink. The metal tube on the belt 41 gradually rises and enters the conveying channel 11 from the entrance. When replenishment is required, the first drive assembly 32 and the first transmission shaft 33 drive the take-up reel 34 to reverse, making the belt 41 loose and easy to pull out.

[0035] Preferably, there are two upper fixing plates 51 and two lower fixing plates 52, and the winding device 3 is centrally located, that is, the first fixing frame 31 is installed between the two lower fixing plates 52.

[0036] In this embodiment of the present invention, a synchronous wheel 61 is provided on the lower fixed plate 52, and a conveyor belt 62 is wound on the synchronous wheel 61 group, with the conveyor belt 62 protruding from the upper surface of the lower fixed plate 52; a second drive assembly 63 is installed on the first fixed frame 31, and a second drive shaft 64 is connected to the output end of the second drive assembly 63. The two ends of the second drive shaft 64 are respectively connected to the synchronous wheel 61 group. Since the section of the above-mentioned conveying channel 11 near the inlet is horizontal and the section near the outlet is inclined, it is difficult for the metal pipe of the conveying channel 11 located in the horizontal section to move forward. Therefore, a conveyor belt 62 is set in the horizontal section. With the cooperation of the second drive assembly 63 and the second drive shaft 64, the synchronous wheel 61 group is linked to make the conveyor belt 62 move, thereby making the metal pipe move forward.

[0037] In this embodiment of the utility model, reference is made to Figure 2 The blocking device 2 has a waiting position. Two first fixed railings 22 are symmetrically arranged at the end of the waiting position, and two third cylinders 14 are symmetrically installed. The output end of the third cylinder 14 is equipped with a lifting plate 15. The lifting plate 15 is provided with at least one positioning groove 16. Based on the fact that the first metal tube enters the waiting position and continues to slide down, it is intercepted by the first fixed railings 22. Then, the two third cylinders 14 simultaneously drive the two lifting plates 15 to extend, and the metal tube enters the positioning groove 16 and is simultaneously lifted up, which facilitates the external device to pick up the material.

[0038] This invention also includes a rotating device 7 for adjusting the angle of the metal, and a color difference detector 8 for detecting the position of the metal, see reference. Figure 4 and Figure 5 After entering the waiting position, the angle of the metal tube needs to be adjusted to avoid bending and causing the weld to crack. It should be noted that the metal tube is usually silver, while the weld is black. However, they are ground flat before leaving the factory, making it difficult to position. Therefore, the color difference is used for positioning. Of course, color should not be used as a limit to the protection range.

[0039] First, two third cylinders 14 simultaneously drive two lifting plates 15 to extend, and the metal tube enters the positioning groove 16 and is lifted. Then, the rotating device 7 clamps the metal tube and drives it to rotate. At the same time, the color difference detector 8 detects the position color difference of the metal tube, using silver as the reference color. When the metal tube rotates to a certain angle, the color difference detector 8 detects black, which is the position of the weld. At this time, the rotating device 7 stops.

[0040] One embodiment of the rotating assembly specifically includes a second fixed frame 71 mounted on a frame 1. A third drive assembly 72, a first slide 73, and a second slide 74 are mounted on the second fixed frame 71. The first slide 73 and / or the second slide 74 are slidably connected to the second fixed frame 71. The third drive assembly 72 drives the first slide 73 and / or the second slide 74 to slide. A fourth drive assembly 75 is mounted on the first slide 73. The output end of the fourth drive assembly 75 is provided with a first movable pressing part 76. A second movable pressing part 77 is rotatably connected to the second slide 74. Preferably, the third drive assembly 72 can be a combination of a motor and a lead screw pair. When both the first slide 73 and the second slide 74 can slide relative to the second fixed frame 71, the lead screw pair should consist of two sets, enabling the first slide 73 and the second slide 74 to move in opposite directions.

[0041] In the initial state, the distance between the first movable pressing part 76 and the second movable pressing part 77 is greater than the length of the metal tube. The third driving component 72 drives the first slide 73 and the second slide 74 to move closer to each other, so that the first movable pressing part 76 and the second movable pressing part 77 abut against the two ends of the metal tube. Preferably, the first movable pressing part 76 and the second movable pressing part 77 are conical heads. Then, the fourth driving component 75 drives the first movable pressing part 76 to rotate, thereby causing the metal tube to rotate.

[0042] Preferably, there are two four-drive components. Each fourth drive component 75 has a first movable pressing part 76 at its output end. The second movable pressing part 77 corresponds one-to-one with the first movable pressing part 76. Of course, two color difference detectors 8 are also provided to check the two metal tubes respectively. In addition, the structure of the blocking device 2 also needs to be optimized. Specifically, it includes a second fixed railing 21 near the outlet of the conveying channel 11. The function of the second fixed railing 21 is to intercept the metal tubes entering the waiting position. A fourth cylinder 24 is provided between the first fixed railing 22 and the second fixed railing 21. The output end of the fourth cylinder 24 is provided with a movable rod 25. There are two fourth cylinders 24, which can be installed on the lower fixed plate 52 or the first fixed frame 31.

[0043] Initially, the movable rod 25 is in a retracted state. Then, the second cylinder 55 and the top pressing member 56 push a metal tube across the second fixed railing 21 into the waiting position, where it is blocked by the first fixed railing 22. After that, the fourth cylinder 24 extends the movable rod 25, and the second cylinder 55 and the top pressing member 56 push the second metal tube across the second fixed railing 21 into the waiting position, where it is blocked by the movable rod 25. In this embodiment, the lifting plate 15 is provided with two positioning grooves 16, which correspond exactly to the two metal tubes. At the same time, the two sets of first movable top pressing parts 76 and second movable top pressing parts 77 also correspond to the two metal tubes.

[0044] In addition, to prevent damage to the metal tube, a buffer assembly 78 is provided at the second movable pressing part 77. More specifically, the buffer assembly 78 includes a movable shaft (not shown), which is rotatably connected to the second slide 74. A spring is sleeved on the movable shaft, and the second movable pressing part 77 is movably engaged with the movable shaft, so that it can move longitudinally and abut against the spring.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A material feeding and weld seam positioning structure for a pipe bending machine, comprising a frame (1), wherein a conveying channel (11) is provided in the frame (1), and a material storage mechanism is located near the inlet end of the conveying channel (11), characterized in that: A blocking device (2) is provided at the outlet end near the conveying channel (11), as well as a rotating device (7) for adjusting the angle of the metal tube and a color difference detector (8) for detecting the position of the metal.

2. The pipe bending machine feeding weld positioning structure according to claim 1, characterized in that: The storage mechanism includes a winding device (3) that extends at least two strips (41) for storing metal tubes.

3. The pipe bending machine feeding weld positioning structure according to claim 1, characterized in that: The rotating device (7) includes a second fixed frame (71) mounted on the frame (1), and a third drive assembly (72), a first slide (73) and a second slide (74) are mounted on the second fixed frame (71); The first slide (73) and / or the second slide (74) are slidably connected to the second fixed frame (71), and the third drive assembly (72) is used to drive the first slide (73) and / or the second slide (74) to slide. A fourth drive assembly (75) is installed on the first slide (73), and the output end of the fourth drive assembly (75) is provided with a first movable pressing part (76). A second movable pressing part (77) is rotatably connected to the second slide (74).

4. The pipe bending machine feeding weld positioning structure according to claim 3, characterized in that: There are two fourth drive components (75), and each fourth drive component (75) has a movable top pressure part at its output end. The second movable top pressure part (77) corresponds one-to-one with the first movable top pressure part (76).

5. The pipe bending machine feeding weld positioning structure according to claim 3, characterized in that: A buffer assembly (78) is provided at the second movable top pressure part (77).

6. The pipe bending machine feeding weld positioning structure according to claim 1, characterized in that: The blocking device (2) is provided with a waiting position, and two first fixed railings (22) are symmetrically provided at the end of the waiting position, and two third cylinders (14) are symmetrically installed. The output end of the third cylinder (14) is equipped with a lifting plate (15), and the lifting plate (15) is provided with at least one positioning groove (16).

7. The pipe bending machine feeding weld positioning structure according to claim 6, characterized in that: The blocking device (2) includes a second fixed railing (21) near the outlet of the conveying channel (11), and a fourth cylinder (24) is provided between the first fixed railing (22) and the second fixed railing (21). The output end of the fourth cylinder (24) is provided with a movable rod (25).

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