Pipe bending equipment

Abstract

The utility model discloses pipe bending equipment which comprises a fixed part, a rotating part, a mold, a first clamping part, a second clamping part, a sliding block and a driving part. When the rotating part is located at the initial position and the first clamping block is matched with one linear section of the die to clamp the pipe, the driving part drives the rotating part to rotate, and then the pipe can be bent. In the process of bending the pipe, the driving part further drives the sliding block to slide, the sliding block abuts against the second clamping block and enables the second clamping block to overcome the elastic piece to stretch out relative to the second installation block to be matched with the arc-shaped section and the other linear section of the die, and it is guaranteed that the bent pipe is attached to the die. The pipe bending machine has the beneficial effects that a pipe is bent more accurately, and the machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the bending processing of pipes, and particularly to a pipe bending device. Background Art

[0002] The bending processing of pipes is a common processing method for pipes. Generally, a corresponding device is used in cooperation with a mold to bend the pipes. In common pipe bending devices, the mold on the rotating part and the clamping block cooperate. After the pipe is clamped and fixed by the clamping block and the mold, the rotating part and the mold are rotated together to make the pipe bend along the mold. For such pipe bending devices, the groove in the mold for the pipe to enter generally includes two straight line segments at both ends and an arc segment connecting these two straight line segments. The included angle between the two straight line segments is the angle that the pipe needs to be bent. The above-mentioned clamping of the pipe by the clamping block and the mold means that the clamping block cooperates with one of the straight line segments. There are still problems with the existing such pipe bending devices: during the bending process of the pipe, when it cooperates with the arc segment and the other straight line segment on the mold, there is a lack of restriction on the other side, and it is easy to have a situation where the pipe does not fit closely enough with the inner wall of the groove in the mold. This situation will increase the deviation between the actual bending radian of the pipe and the radian designed in the groove of the mold, affecting the processing quality of the pipe. Content of the Utility Model

[0003] This application provides a pipe bending device that can solve the problems raised in the background art.

[0004] In this application, a pipe bending device is provided, including:

[0005] A fixing part;

[0006] A rotating part, hinged to the fixing part around a vertical first axis;

[0007] A mold, fixedly connected to the hinged position of the rotating part;

[0008] A first clamping part, arranged on the rotating part; including: a first mounting block that can approach or move away from the mold along the radial direction of the first axis, a first clamping block fixedly connected to the first mounting block, and a first power cylinder that drives the first mounting block to slide;

[0009] A second clamping part, arranged on the fixing part; including: a second mounting block that can approach or move away from the mold in a first direction, a second clamping block horizontally slidably connected to the second mounting block in a second direction perpendicular to the first direction, an elastic member arranged between the second clamping block and the second mounting block, and a second power cylinder that drives the second mounting block to slide;

[0010] A slider, slidably connected to the fixing part in the second direction; fixedly provided with a resisting part; only when the second clamping part is in the limit of approaching the mold, the resisting part of the slider can resist against one end of the second clamping block away from the first clamping part;

[0011] A driving part drives the rotating part to swing and the slider to slide; during the process of bending the pipe by the rotating part, the slider causes the second clamping block to slide against the elastic member.

[0012] Furthermore, the driving part is a motor; a linkage assembly for converting rotation into linear motion is provided between the slider and the rotating part.

[0013] Furthermore, the linkage assembly is a gear and rack, the gear is fixedly connected to the position of the rotating part corresponding to the first axis, and the rack is fixedly connected to the slider.

[0014] Furthermore, there is at least one of the following settings:

[0015] Setting 1: The cylinder block of the first power cylinder is hinged to the rotating part, and the piston rod is hinged to the first mounting block;

[0016] Setting 2: The cylinder block of the second power cylinder is hinged to the fixed part, and the piston rod is hinged to the second clamping block.

[0017] Furthermore, there is at least one of the following settings:

[0018] Setting 3: The first mounting block includes: a first sliding part that slides with the rotating part and is for connecting the first power cylinder, and a first fixing part that can adjust the fixed position on the first sliding part and is for connecting the first clamping block;

[0019] Setting 4: The second mounting block includes: a third sliding part that slides with the fixed part and is for connecting the second power cylinder, and a second fixing part that can adjust the fixed position on the second sliding part and is for connecting the second clamping block.

[0020] Furthermore, a first threaded rod for adjusting the position is provided between the first sliding part and the first fixing part; a second threaded rod for adjusting the position is provided between the second sliding part and the second fixing part.

[0021] In summary, in this application, a pipe bending device includes a fixed part, a rotating part, a mold, a first clamping part, a second clamping part, a slider and a driving part. When the rotating part is in the initial position and the first clamping block cooperates with one of the straight line segments of the mold to clamp the pipe, the driving part drives the rotating part to rotate, and the pipe can be bent. During the process of bending the pipe, the driving part also drives the slider to slide, the slider abuts against the second clamping block and causes it to extend relative to the second mounting block against the elastic member, and cooperates with the arc segment and the other straight line segment of the mold to ensure that the bending of the pipe fits the mold. The beneficial effects are as follows: The pipe is bent more precisely, improving the processing quality. Description of the Drawings

[0022] To better illustrate the technical solutions in the embodiments of the present application or the background art, the following will describe the drawings required for use in the embodiments of the present application or the background art.

[0023] Figure 1 It is a schematic diagram of the present application;

[0024] Figure 2 It is a schematic diagram of another perspective of the present application;

[0025] Figure 3 It is Figure 2 an enlarged schematic diagram of part A in

[0026] Figure 4 It is a schematic diagram of a position during the bending process of the present application;

[0027] Figure 5 It is for the first clamping part in Figure 4 a schematic diagram of the state;

[0028] Figure 6 It is for the second clamping part in Figure 4 a schematic diagram of the state;;

[0029] Figure 7 It is the front view of the present application;

[0030] Figure 8 It is Figure 7 a sectional view along A-A in

[0031] Figure 9 It is the top view of the present application;

[0032] Figure 10 It is Figure 9 a sectional view along B-B in

[0033] Figure 11 It is Figure 10 an enlarged schematic diagram of part B in

[0034] In the figure,

[0035] 1. Fixed part; 1a. Housing; 1b. Connecting arm;

[0036] 2. Rotating part; 2a. Installation position; 2b. Rotating shaft; 2c. First through groove;

[0037] 3. Mold; 3a. Straight section; 3b. Arc section;

[0038] 4. First clamping part; 4a. First mounting block; 4a1. First sliding part; 4a1a. Groove; 4a1b. Square nut; 4a2. First fixed part; 4a2a. First bolt; 4a3. First threaded rod; 4b. First clamping block; 4c. First power cylinder;

[0039] 5. Second clamping part; 5a. Second mounting block; 5a1. Connecting bar; 5a2. Third bolt; 5a3. Second sliding part; 5a4. Second fixing part; 5a5. Second threaded rod; 5b. Second clamping block; 5c. Elastic member; 5d. Second power cylinder;

[0040] 6. Slide block; 6a. Abutting part; 6b. Linear guide rail;

[0041] 7. Driving part; 7a. Gear; 7b. Rack. Detailed implementation manner

[0042] The following will be further described with reference to the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the ordinary meaning understood by those of ordinary skill in the art to which this disclosure belongs. The "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0043] Please refer to Figure 1 、 Figure 7 and Figure 9 A pipe bending device, comprising a fixing part 1, a rotating part 2, a mold 3, a first clamping part 4, a second clamping part 5, a slide block 6 and a driving part 7.

[0044] The rotating part 2 is rotatably connected to the fixing part 1 around a vertical first axis. More specifically, a cylindrical housing 1a may be fixedly connected to the fixing part 1, and a rotating shaft 2b is rotatably connected to the housing 1a. The axis of the rotating shaft 2b is the above-mentioned first axis. One side of the rotating part 2 has two upper and lower mounting positions 2a, which are respectively fixedly connected to the upper end and the lower end of the rotating shaft 2b passing through the housing 1a.

[0045] The mold 3 is fixedly connected to the hinge position of the rotating part 2, that is, the mold 3 rotates together with the rotating part 2 and the rotating shaft 2b. More specifically, the mold 3 may be sleeved on the upper end of the rotating shaft 2b. The upper end of the rotating shaft 2b has a section of thread, and through a nut cooperating with the mounting position 2a above the rotating part 2, the mold 3 is pressed and fixed.

[0046] The mold 3 is designed according to the angle required for bending the pipe, and includes two straight sections 3a at both ends and an arc section 3b connecting the two straight sections 3a. The included angle between the two straight sections 3a is the angle required for bending the pipe. In the attached drawings, the mold 3 is exemplified by a U shape. Correspondingly, the pipe is bent 180 degrees into a U shape. For pipes with different bending angles and different pipe diameters, the corresponding mold 3 can be replaced.

[0047] Please refer to Figure 1 and Figure 2 , the first clamping portion 4 is arranged on the rotating portion 2. When the rotating portion 2 is in the initial position, the first clamping portion 4 is used to cooperate with one of the straight sections 3a of the mold 3 to clamp and fix the pipe.

[0048] The first clamping portion 4 includes a first mounting block 4a, a first clamping block 4b and a first power cylinder 4c.

[0049] The first mounting block 4a is slidably connected to the rotating portion 2 along the radial direction of the first axis, that is, the first mounting block 4a can approach or move away from the mold 3.

[0050] The first clamping block 4b is fixedly connected to the first mounting block 4a. For pipes with different bending angles and different pipe diameters, the corresponding first clamping block 4b can be replaced.

[0051] The first power cylinder 4c drives the first mounting block 4a to slide. The first power cylinder 4c can adopt a hydraulic cylinder, that is, through the first power cylinder 4c, the first clamping block 4b can cooperate with one of the straight sections 3a of the mold 3 to clamp or release the pipe.

[0052] In the state where the first clamping block 4b cooperates with one of the straight sections 3a of the mold 3 to clamp the pipe, when the rotating portion 2 rotates, the pipe can be bent.

[0053] Please refer to Figure 1 and Figure 2 , the second clamping portion 5 is arranged on the fixed portion 1 and is used to cooperate with the arc section 3b and the other straight section 3a of the mold 3 during the bending process of the pipe to ensure that the bending of the pipe fits the mold 3.

[0054] The second clamping portion 5 includes a second mounting block 5a, a second clamping block 5b, an elastic member 5c and a second power cylinder 5d. It can be found that the structure of the second clamping portion 5 is similar to that of the first clamping portion 4. Therefore, a connecting arm 1b similar in structure to the rotating portion 2 can be fixedly connected to the fixed portion 1 for the second clamping portion 5 to be arranged.

[0055] The second mounting block 5a is horizontally slidably connected to the fixed portion 1, and the sliding direction is set as the first direction, that is, the second mounting block 5a can approach or move away from the mold 3 along the first direction.

[0056] The second clamping block 5b is horizontally slidably connected to the second mounting block 5a, and the sliding direction is the second direction perpendicular to the first direction. Corresponding to tubes with different bending angles and different pipe diameters, the corresponding second clamping block 5b can be replaced.

[0057] Please refer to Figure 2 , an elastic member 5c is disposed between the second clamping block 5b and the second mounting block 5a. Further illustrated when the rotating portion 2 is in the initial position, at this time the first clamping block 4b and the second clamping block 5b are arranged side by side along the second direction. Under the action of the elastic member 5c, the second clamping block 5b is limited to relatively retract into the second mounting block 5a. More specifically, the elastic member 5c can adopt a tension spring (for the convenience of representation, only the two ends of the tension spring are shown in the drawings), and the two ends are respectively connected to the second mounting block 5a and the second clamping block 5b.

[0058] Please refer to Figure 3 , in some embodiments, a connecting bar 5a1 may be fixedly connected to the top surface of the second mounting block 5a. The end of the connecting bar 5a1 away from the first clamping block 4b extends beyond the second mounting block 5a, and a third bolt 5a2 is fixedly connected to the extended portion. The upper part of the third bolt 5a2 is for the tension spring to hang on, and the lower part is for the second clamping block 5b to abut against. When the second clamping block 5b abuts against the lower part of the third bolt 5a2, that is, the second clamping block 5b is limited to relatively retract into the second mounting block 5a.

[0059] The second power cylinder 5d drives the second mounting block 5a to slide.

[0060] Please refer to Figure 9 , Figure 10 and Figure 11 , in some embodiments, the cylinder block of the first power cylinder 4c is hinged to the rotating portion 2, and the piston rod is hinged to the first mounting block 4a. More specifically, a space may be provided at the position of the rotating portion 2 below the first mounting block 4a and a first through groove 2c communicating the space and the first mounting block 4a may be provided.

[0061] In this way, compared with the cylinder block being fixed to rotate, the first clamping block 4b can be clamped more stably, and also reduces the length of the entire rotating portion 2 in the horizontal direction after the first clamping portion 4 is provided on the rotating portion 2.

[0062] Similarly, for the second clamping portion 5, it can also be set as: the cylinder block of the second power cylinder 5d is hinged to the fixing portion 1, and the piston rod is hinged to the second clamping block 5b. That is, either one or both of the first clamping portion 4 and the second clamping can adopt this setting method of the power cylinder.

[0063] Please refer to Figure 2 , Figure 5 and Figure 11, in some embodiments, the first mounting block 4a includes a first sliding portion 4a1 and a first fixing portion 4a2. The first sliding portion 4a1 is used for slidably connecting with the rotating portion 2 and is connected to the first power cylinder 4c. The first fixing portion 4a2 can adjust its fixing position on the first sliding portion 4a1 and is connected to the first clamping block 4b. More specifically, a groove 4a1a may be provided on the first sliding portion 4a1, and a square nut 4a1b that is restricted from rotating is arranged in the groove. A first bolt 4a2a passes through the first fixing portion 4a2 and is threadedly connected to the square nut 4a1b.

[0064] In this way, by adjusting the fixing position of the first fixing portion 4a2 on the first sliding portion 4a1, fine adjustment of the first clamping block 4b can be made, which is more convenient and feasible to operate compared to adjusting the first power cylinder 4c. Especially when replacing the first clamping block 4b, fine adjustment of the first clamping block 4b is more needed for adaptation.

[0065] Similarly, for the second clamping portion 5, it can also be set as: the second mounting block 5a includes a second sliding portion 5a3 and a second fixing portion 5a4. The second sliding portion 5a3 is used for slidably connecting with the fixing portion 1 and is connected to the second power cylinder 5d. The second fixing portion 5a4 can adjust its fixing position on the second sliding portion 5a3 and is connected to the second clamping block 5b and the elastic member 5c. If the above-mentioned connecting bar 5a1 is provided, the connecting bar 5a1 is fixedly connected to the second. That is, either the first clamping portion 4 or the second clamping portion, or both, can adopt this setting method for clamping block adjustment.

[0066] Please refer to Figure 5 and Figure 6 , further, if the first clamping portion 4 adopts this setting method for clamping block adjustment, a first threaded rod 4a3 for adjusting the position is arranged between the first sliding portion 4a1 and the first fixing portion 4a2. More specifically, a T-shaped groove is provided on the first fixing portion 4a2, and the end of the first threaded rod 4a3 close to the first fixing portion 4a2 is in a stepped shape that fits the T-shaped groove. A first connecting block is fixedly connected to the first sliding portion 4a1, and the first connecting block is provided with a threaded hole that fits the first threaded rod 4a3. After loosening the first bolt 4a2a, rotating the first threaded rod 4a3 can finely adjust the first fixing portion 4a2.

[0067] Similarly, if the second clamping portion 5 adopts this setting method for clamping block adjustment, a second threaded rod 5a5 for adjusting the position is arranged between the second sliding portion 5a3 and the second fixing portion 5a4.

[0068] Please refer to Figure 7 and Figure 8 , the slider 6 is slidably connected to the fixing portion 1 along the second direction. More specifically, the sliding therebetween can be realized through a linear guide rail 6b.

[0069] See also Figure 3 and Figure 8 , the slider 6 is also fixed with a resisting portion 6a. Only when the second clamping portion 5 is in the limited position close to the mold 3, the resisting portion 6a of the slider 6 can resist the end of the second clamping block 5b away from the first clamping portion 4. That is, the resisting portion 6a passes through the fixed portion 1. When the second clamping portion 5 is in the limited position close to the mold 3, the slider 6 can be slid to make the resisting portion 6a resist the second clamping block 5b, overcome the elastic member 5c, drive the second clamping block 5b to slide, and make the second clamping block 5b extend relative to the second mounting block 5a; and if the second power cylinder 5d switches the second clamping portion 5 to the limited position away from the mold 3, the resisting portion 6a and the second clamping block 5b will be staggered, and the second clamping block 5b will be restored to the limited position relatively retracted into the second mounting block 5a under the action of the elastic member 5c.

[0070] The driving part 7 drives the rotating part 2 to swing and the sliding block 6 to slide. When the rotating part 2 bends the tube, the sliding block 6 enables the second clamping block 5b to overcome the elastic member 5c and slide.

[0071] The rotating part 2 is in the initial position, the first clamping part 4 and the second clamping part 5 are both limited away from the mold 3, and correspondingly, the second clamping block 5b is relatively retracted into the second mounting block 5a. The process of bending the pipe in this application is briefly described as follows:

[0072] S1, insert the tube between the mold 3 and the first clamping block 4b, partially exceeding the mold 3 and the first clamping block 4b;

[0073] S2. Please refer to Figure 1 , the first clamping part 4 and the second clamping part 5 are switched to a limit position close to the mold 3, and the first clamping block 4b is matched to one of the straight line segments 3a of the mold 3 to clamp the tube;

[0074] S3. Please refer to Figure 4 The rotating part 2 swings to bend the tube, and at the same time the slider 6 slides to abut against the second clamping block 5b, so that it extends relative to the second mounting block 5a and fits into the arc segment 3b of the mold 3 and another straight segment 3a;

[0075] S4, after the tube is bent, the first clamping part 4 and the second clamping part 5 are restored to the limit position away from the mold 3, and the second clamping block 5b is restored to the limit position relatively retracted into the second mounting block 5a under the action of the elastic member 5c, and the bent tube is taken out;

[0076] S5, the rotating part 2 rotates back to the initial position;

[0077] S6. Repeat the above steps S1-S5.

[0078] The driving part 7 can be a linear motion mechanism that drives the slider 6 to slide, and then converts the linear motion into the rotational motion of the rotating part 2 through the linkage component. The driving part 7 can also be a rotational motion mechanism that drives the rotating part 2 to rotate, and then converts the rotational motion into the linear motion of the slider 6 through the linkage component.

[0079] Please refer to Figure 8 , in some embodiments, the driving part 7 is a motor. More specifically, the motor can be a servo motor or a stepper motor, which is convenient for controlling the rotation angle. A linkage component for converting rotation into linear motion is provided between the slider 6 and the rotating part 2.

[0080] In this way, when the bending angle of the pipe changes, after replacing the corresponding mold 3, the rotation angle of the motor can be easily adjusted to adapt.

[0081] Furthermore, the linkage component is a gear 7a and a rack 7b. The gear 7a is fixedly connected to the position of the rotating part 2 corresponding to the first axis, that is, the gear 7a is fixedly connected to the above-mentioned rotating shaft 2b. The rack 7b is fixedly connected to the slider 6. Of course, the two can also be directly integrated. Correspondingly, a notch for the rack 7b to enter and engage with the gear 7a is provided on the housing 1a.

Claims

1. A pipe bending device, characterized in that: include: A fixing portion (1); A rotating part (2) is hinged to the fixed part (1) around a vertical first axis; A mold (3) fixedly connected to a hinged position of the rotating part (2); A first clamping portion (4) is arranged on the rotating portion (2); and comprises: a first mounting block (4a) capable of approaching or moving away from the mold (3) along the radial direction of the first axis, a first clamping block (4b) fixedly connected to the first mounting block (4a), and a first power cylinder (4c) for driving the first mounting block (4a) to slide; The second clamping portion (5) is arranged on the fixing portion (1); it comprises: a second mounting block (5a) capable of approaching or moving away from the mold (3) along a first direction, a second clamping block (5b) capable of horizontally sliding along a second direction perpendicular to the first direction and connected to the second mounting block (5a), an elastic member (5c) arranged between the second clamping block (5b) and the second mounting block (5a), and a second power cylinder (5d) for driving the second mounting block (5a) to slide; A slider (6) is slidably connected to the fixing portion (1) along a second direction; a supporting portion (6a) is fixedly provided; only when the second clamping portion (5) is in a limited position close to the mold (3), the supporting portion (6a) of the slider (6) can support an end of the second clamping block (5b) away from the first clamping portion (4); The driving part (7) drives the rotating part (2) to swing and the sliding block (6) to slide; when the rotating part (2) bends the tube, the sliding block (6) causes the second clamping block (5b) to overcome the elastic member (5c) to slide.

2. A pipe bending device according to claim 1, characterized in that: The driving part (7) is a motor; a linkage component for converting rotation into linear motion is provided between the slider (6) and the rotating part (2).

3. A pipe bending device according to claim 2, characterized in that: The linkage assembly is a gear (7a) and a rack (7b); the gear (7a) is fixedly connected to a position of the rotating part (2) corresponding to the first axis, and the rack (7b) is fixedly connected to the slider (6).

4. A pipe bending device according to claim 1, characterized in that: Also has at least one of the following settings: Arrangement 1: the cylinder body of the first power cylinder (4c) is hinged to the rotating part (2), and the piston rod is hinged to the first mounting block (4a); The cylinder body of the second power cylinder (5d) is hinged to the fixing part (1), and the piston rod is hinged to the second clamping block (5b).

5. The pipe bending device according to claim 1, characterized in that: Also has at least one of the following settings: Configuration three, the first mounting block (4a) comprises: a first sliding portion (4a1) sliding with the rotating portion (2) and connected to the first power cylinder (4c), and a first fixing portion (4a2) capable of adjusting a fixed position on the first sliding portion (4a1) and connected to the first clamping block (4b); Setting four, the second mounting block (5a) comprises: a third sliding part that slides with the fixing part (1) and is connected to the second power cylinder (5d), and a second fixing part (5a4) that can be adjusted to a fixed position on the second sliding part (5a3) and is connected to the second clamping block (5b) and the elastic member (5c).

6. A pipe bending device according to claim 5, characterized in that: A first threaded rod (4a3) for adjusting the position is arranged between the first sliding part (4a1) and the first fixed part (4a2); and a second threaded rod (5a5) for adjusting the position is arranged between the second sliding part (5a3) and the second fixed part (5a4).

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