Clamp for pipe bending

Abstract

The utility model relates to the technical field of pipe machining, in particular to a clamp for pipe bending. The device comprises a rack, an upper rotating plate, a circular ring, a guide plate and a plurality of pressing mechanisms, a mounting disc is fixed at the upper end of the rack; the upper rotating plate is rotationally mounted on the mounting disc, and a rotating driving assembly used for driving the upper rotating plate to rotate is mounted on the mounting disc; the circular ring is fixed at the center of the upper rotating plate which is provided with a circular hole; a plurality of positioning holes are formed in the circular ring in the radial direction; the pressing mechanism comprises a sleeve, a pressing block, a first guide rod, a first spring and a hemispherical block; the guide plate is arranged on the edge above the circular ring. According to the technical scheme, at least the independent discharging station, the independent bending station and the independent discharging station are arranged, so that discharging, bending and discharging work can be continuously carried out, the function of automatically fixing the pipe can be achieved, and the automation degree is high.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a clamp for bending pipes. Background Technology

[0002] In the field of metal pipe processing, pipe bending is a common forming process, widely used in industries such as automobile manufacturing, furniture production, and pipeline installation. Traditional pipe bending processes are usually completed manually or with the assistance of simple fixtures, resulting in problems such as low bending accuracy, poor forming consistency, and low production efficiency. With the improvement of industrial automation, higher requirements are placed on the accuracy and efficiency of pipe bending.

[0003] However, existing bending fixtures still have shortcomings in terms of structural design and functional adaptability. For example, some fixtures require manual adjustment and clamping, which is convenient to operate. In the continuous processing of multiple pipes, it is necessary to wait for the processing technology of the previous pipe before the next pipe can be fixed, resulting in low work efficiency and unsuitability for mass production. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a clamp for bending pipes.

[0005] The technical solution of this utility model is a clamp for bending pipes, which includes a frame, an upper rotating plate, a ring, a guide plate and multiple clamping mechanisms.

[0006] A mounting plate is fixed to the upper end of the frame; an upper rotating plate is rotatably mounted on the mounting plate, and a rotary drive assembly for driving the upper rotating plate to rotate is mounted on the mounting plate; a ring is fixed to the center of the upper rotating plate, and a circular hole is opened in the center of the upper rotating plate; multiple positioning holes are opened radially on the ring, and the multiple positioning holes are arranged in a circular array; multiple clamping mechanisms are arranged one-to-one with the multiple positioning holes, and the clamping mechanism includes a sleeve, a pressure block, a first guide rod, a first spring, and a hemispherical block. The sleeve is fixed to the ring and communicates with the corresponding side positioning hole. The pressure block is slidably disposed in the sleeve. The first guide rod moves through the inner and outer sides of the sleeve, and its two ends are connected to the pressure block and the hemispherical block, respectively. The first spring is sleeved and mounted on the first guide rod; a guide plate is disposed on the upper edge of the ring, one end of the guide plate is curved upward, and a fixed bracket is connected between the guide plate and the mounting plate.

[0007] Preferably, it also includes a pop-out mechanism, which includes a guide rail and multiple sets of ejection components. The multiple sets of ejection components are arranged one-to-one with multiple positioning holes. The ejection mechanism includes a pop-out plate, a fixed plate, a second guide rod, a second spring, and a limiting rod. The fixed plate is fixedly disposed inside the corresponding side positioning hole. The pop-out plate is slidably disposed in the positioning hole. The second guide rod movably passes through the fixed plate and its two ends are respectively connected to the pop-out plate and the limiting rod. The second spring is sleeved and installed on the second guide rod. The guide rail is disposed inside the ring and is fixedly connected to the mounting plate.

[0008] Preferably, the guide rail has a hook-shaped structure.

[0009] Preferably, the upper rotating plate is equipped with multiple bending mechanisms, each corresponding to a positioning hole. Each bending mechanism includes a bending die and a bending wheel. The bending die is mounted on the upper rotating plate, and a movable shaft is mounted on the bending wheel. A limit block is connected to the bottom end of the movable shaft. The upper rotating plate has multiple arc-shaped holes for the multiple movable shafts to pass through. A drive mechanism for driving the bending wheel to move is mounted on the mounting plate.

[0010] Preferably, the drive mechanism includes a cylinder and a push plate. The cylinder is mounted on the mounting plate, and the push plate is connected to the cylinder output shaft. Elastic ropes are connected to multiple bending wheels, and the other end of the elastic ropes is connected to the mounting plate.

[0011] Preferably, at least three positioning holes are provided.

[0012] Preferably, the rotary drive assembly includes a servo motor, a gear, and a gear ring. The servo motor is mounted on the mounting plate, the gear is mounted on the output shaft of the servo motor, and the gear ring is fixedly connected to the upper rotating plate and coaxially arranged with the mounting plate, with the gear ring meshing with the gear.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: the present invention has at least independent feeding, bending and unloading stations, which enables the feeding, bending and unloading work to be carried out continuously, the whole work rhythm is compact and the work efficiency is improved; and it also has the function of automatic clamping and fixing, with a high degree of automation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure at the bottom of the upper rotating plate in this utility model.

[0016] Figure 3 This is a schematic diagram of the clamping mechanism in this utility model.

[0017] Figure 4 This is a cross-sectional view of the ring in this utility model.

[0018] Reference numerals: 1. Frame; 2. Upper rotating plate; 201. Arc-shaped hole; 3. Ring; 301. Positioning hole; 41. Bending mold; 42. Bending wheel; 421. Movable shaft; 422. Limiting block; 5. Guide plate; 6. Fixed bracket; 7. Sleeve; 8. Pressure block; 9. First guide rod; 10. First spring; 11. Hemispherical block; 12. Mounting plate; 13. Cylinder; 141. Servo motor; 142. Gear; 143. Gear ring; 15. Push plate; 16. Guide rail; 17. Pop-out plate; 18. Fixed plate; 19. Second guide rod; 20. Second spring; 21. Limiting rod; 22. Elastic rope. Detailed Implementation

[0019] Example 1

[0020] like Figures 1-4 As shown in the figure, the pipe bending fixture proposed in this embodiment includes a frame 1, an upper rotating plate 2, a ring 3, a guide plate 5, and multiple clamping mechanisms.

[0021] A mounting plate 12 is fixed to the upper end of the frame 1; an upper rotating plate 2 is rotatably mounted on the mounting plate 12, and a rotary drive assembly for driving the upper rotating plate 2 to rotate is mounted on the mounting plate 12. The rotary drive assembly includes a servo motor 141, a gear 142, and a gear ring 143. The servo motor 141 is mounted on the mounting plate 12, the gear 142 is mounted on the output shaft of the servo motor 141, and the gear ring 143 is fixedly connected to the upper rotating plate 2 and coaxially arranged with the mounting plate 12, meshing with the gear 142. A circular ring 3 is fixed at the center of the upper rotating plate 2, and a circular hole is opened at the center of the upper rotating plate 2. Multiple positioning holes 301 are opened along the radial direction of the circular ring 3. At least three positioning holes 301 are arranged in a circular array; multiple clamping mechanisms are arranged one-to-one with the multiple positioning holes 301. The clamping mechanism includes a sleeve 7, a pressure block 8, a first guide rod 9, a first spring 10, and a hemispherical block 11. The sleeve 7 is fixed on the ring 3 and communicates with the corresponding side positioning hole 301. The pressure block 8 is slidably arranged inside the sleeve 7. The first guide rod 9 moves through the inner and outer sides of the sleeve 7. The two ends of the first guide rod 9 are connected to the pressure block 8 and the hemispherical block 11, respectively. The first spring 10 is sleeved and installed on the first guide rod 9. The guide plate 5 is located on the upper edge of the ring 3. One end of the guide plate 5 is curved upward. A fixed bracket 6 is connected between the guide plate 5 and the mounting plate 12.

[0022] It should be added that this technical solution relies on a PLC controller to control the equipment.

[0023] In this technical solution, when bending the aluminum tube, the end of the round tube is inserted into the inner limit position of the positioning hole 301, such as... Figure 1 As shown, it should be added that a chamfer is provided at the outer end of the positioning hole 301 to facilitate the insertion of the round tube.

[0024] The upper rotating plate 2 is driven to rotate intermittently by a drive component. The single rotation angle of the upper rotating plate 2 is 360 / N, where N is the number of positioning holes 301. During the rotation of the ring 3, the hemispherical block 11 begins to contact the raised part of the guide plate 5. As the ring 3 continues to rotate, it forces the hemispherical block 11 to move downward, which compresses the first spring 10. The hemispherical block 11 drives the first guide rod 9 and the pressure block 8 to move, so that the pressure block 8 presses on the pipe, thereby realizing the automatic clamping of the pipe.

[0025] After the pipe is rotated to the bending station, the pipe is bent by the set bending tool. After the bending work is completed, the ring 3 is continuously driven to rotate. When the bent pipe is moved out of the bending station, the processed pipe can be unloaded.

[0026] In summary, this technical solution has at least independent feeding, bending, and unloading stations, enabling continuous feeding, bending, and unloading operations with a compact work rhythm and improved work efficiency; it also has an automatic clamping and fixing function, resulting in a high degree of automation.

[0027] Example 2

[0028] like Figure 4 As shown, the pipe bending clamp proposed in this embodiment, compared with the first embodiment, further includes a pop-out mechanism. The pop-out mechanism includes a guide rail 16 and multiple sets of push-out components, which are arranged one-to-one with multiple positioning holes 301. The push-out mechanism includes a pop-out plate 17, a fixed plate 18, a second guide rod 19, a second spring 20, and a limiting rod 21. The fixed plate 18 is fixedly disposed inside the corresponding side positioning hole 301. The pop-out plate 17 is slidably disposed inside the positioning hole 301. The second guide rod 19 movably passes through the fixed plate 18 and its two ends are respectively connected to the pop-out plate 17 and the limiting rod 21. The second spring 20 is sleeved on the second guide rod 19. The guide rail 16 is disposed inside the ring 3 and is fixedly connected to the mounting plate 12. The guide rail 16 has a hook-shaped structure.

[0029] In this embodiment, when the bent pipe moves out of the bending machine and when the limiting rod 21 separates from the guide rail 16, refer to Figure 4 As shown, under the elastic force of the second spring 20, the ejector plate 17 moves quickly and ejects the end of the pipe from the inside of the positioning hole 301. A belt conveyor or a material box can be set on one side of the ejection station to receive the pipe after automatic unloading.

[0030] Example 3

[0031] like Figure 1 and Figure 2As shown, this embodiment proposes a pipe bending fixture. Compared with the first embodiment, in this embodiment, multiple bending mechanisms are installed on the upper rotating plate 2. The multiple bending mechanisms are arranged one-to-one with multiple positioning holes 301. The bending mechanism includes a pipe bending die 41 and a bending wheel 42. The pipe bending die 41 is installed on the upper rotating plate 2. A movable shaft 421 is installed on the bending wheel 42. The bottom end of the movable shaft 421 is connected to a limit block 422. Multiple arc-shaped holes 201 are opened on the upper rotating plate 2 for the multiple movable shafts 421 to pass through. A drive mechanism for driving the bending wheel 42 to move is installed on the mounting plate 12.

[0032] The drive mechanism includes a cylinder 13 and a push plate 15. The cylinder 13 is mounted on the mounting plate 12, and the push plate 15 is connected to the output shaft of the cylinder 13. Multiple bending wheels 42 are connected to elastic ropes 22, and the other end of the elastic ropes 22 is connected to the mounting plate 12.

[0033] In this embodiment, it should be added that both the bending die 41 and the bending wheel 42 are provided with annular grooves, which are adapted to the outer wall of the pipe, such as... Figure 1 As shown, after the pipe moves to the bending station, the cylinder 13 is activated to drive the push plate 15 to move. The push plate 15 pushes the limit block 422 to move, which in turn drives the bending wheel 42 to move along the arc hole 201 (the bending wheel 42 moves around the center of the bending die 41), thereby realizing the bending of the pipe. After the push plate 15 is reset, the bending wheel 42 can be automatically reset to the initial position under the elastic force of the elastic rope 22.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A clamp for bending pipes, characterized in that, It includes a frame (1), an upper rotating plate (2), a ring (3), a guide plate (5), and multiple clamping mechanisms; A mounting plate (12) is fixed to the upper end of the frame (1); an upper rotating plate (2) is rotatably mounted on the mounting plate (12), and a rotary drive assembly for driving the upper rotating plate (2) to rotate is mounted on the mounting plate (12); a ring (3) is fixed to the center of the upper rotating plate (2), and a circular hole is opened in the center of the upper rotating plate (2); multiple positioning holes (301) are opened along its radial direction on the ring (3), and the multiple positioning holes (301) are arranged in a ring array; multiple clamping mechanisms are arranged one-to-one with the multiple positioning holes (301), and the clamping mechanism includes a sleeve (7), a pressure block (8), and a first guide rod (9). The first spring (10) and hemispherical block (11) are fixed on the ring (3) and the sleeve (7) is connected to the corresponding side positioning hole (301). The pressure block (8) is slidably set inside the sleeve (7). The first guide rod (9) moves through the inside and outside of the sleeve (7). The two ends of the first guide rod (9) are connected to the pressure block (8) and hemispherical block (11) respectively. The first spring (10) is sleeved and installed on the first guide rod (9). The guide plate (5) is set on the upper edge of the ring (3). One end of the guide plate (5) is raised upward. A fixed bracket (6) is connected between the guide plate (5) and the mounting plate (12).

2. The pipe bending clamp according to claim 1, characterized in that, It also includes a pop-out mechanism, which includes a guide rail (16) and multiple sets of push-out components. The multiple sets of push-out components are set one-to-one with multiple positioning holes (301). The push-out mechanism includes a pop-out plate (17), a fixed plate (18), a second guide rod (19), a second spring (20), and a limiting rod (21). The fixed plate (18) is fixedly installed at the inner end of the corresponding side positioning hole (301). The pop-out plate (17) is slidably installed in the positioning hole (301). The second guide rod (19) moves through the fixed plate (18) and its two ends are respectively connected to the pop-out plate (17) and the limiting rod (21). The second spring (20) is sleeved on the second guide rod (19). The guide rail (16) is located inside the ring (3) and is fixedly connected to the mounting plate (12).

3. A pipe bending clamp according to claim 2, characterized in that, The guide rail (16) has a hook-shaped structure.

4. A pipe bending clamp according to claim 1, characterized in that, Multiple bending mechanisms are installed on the upper rotating plate (2), and the multiple bending mechanisms are set one-to-one with multiple positioning holes (301). The bending mechanism includes a pipe bending mold (41) and a bending wheel (42). The pipe bending mold (41) is installed on the upper rotating plate (2), and a movable shaft (421) is installed on the bending wheel (42). The bottom end of the movable shaft (421) is connected to a limit block (422). Multiple arc-shaped holes (201) are opened on the upper rotating plate (2) for the multiple movable shafts (421) to pass through. A drive mechanism for driving the bending wheel (42) to move is installed on the mounting plate (12).

5. A pipe bending clamp according to claim 4, characterized in that, The drive mechanism includes a cylinder (13) and a push plate (15). The cylinder (13) is mounted on the mounting plate (12), and the push plate (15) is connected to the output shaft of the cylinder (13). Elastic ropes (22) are connected to multiple bending wheels (42), and the other end of the elastic ropes (22) is connected to the mounting plate (12).

6. A pipe bending clamp according to claim 1, characterized in that, At least three positioning holes (301) are provided.

7. A pipe bending clamp according to claim 1, characterized in that, The rotary drive assembly includes a servo motor (141), a gear (142), and a gear ring (143). The servo motor (141) is mounted on the mounting plate (12), the gear (142) is mounted on the output shaft of the servo motor (141), and the gear ring (143) is fixedly connected to the upper rotating plate (2) and coaxially arranged with the mounting plate (12). The gear ring (143) meshes with the gear (142).

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