Semi-automatic bending equipment for round pipe

Abstract

The utility model belongs to the technical field of circular tube bending, and particularly discloses a semi-automatic bending device for circular tubes, which is characterized in that a transmission shaft is rotatably connected to the middle of an operating table, the lower end of the transmission shaft is in transmission connection with a driving mechanism, and the upper end of the transmission shaft is detachably connected with a bending die through a bending die connecting shaft; the upper end of the transmission shaft is further fixedly sleeved with a rotating arm, a rotating clamping block capable of sliding back and forth in the axial direction of the first guide rail to be close to or away from the bending die is arranged on the rotating arm, the rotating arm can drive the rotating clamping block to rotate around the arc-shaped guide rail with the transmission shaft as the center, and a second guide rail is arranged on the outer side of the initial position of the rotating arm. The second guide rail is slidably connected with a sliding clamp, the rotary clamping block and the sliding clamp can correspondingly clamp the head end and the tail end of a circular pipe to be machined, the positions of the rotary clamping block and the sliding clamp are adjustable, the bending requirements of circular hollow pipes with different bending angles and different bending diameters are met, the delivery requirement of the market for products is met, and the production efficiency is improved. And standardized production is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of circular tube bending technology, and specifically discloses a semi-automatic circular tube bending device. Background Technology

[0002] Metal round tubes are used in various fields. Most metal round tubes are originally straight. However, in the field of non-standard customization of mechanical equipment, some special workpieces require round tubes with curved shapes after bending. This necessitates bending certain hollow round tubes at specific angles and diameters. Current technology typically involves manual bending. On the one hand, due to varying levels of experience among operators, there is inconsistency in the control of key parameters such as bending force and angle, leading to significant fluctuations in the quality of the bent round tubes. This results in unstable bending quality, making it difficult to meet the requirements of standardized production. On the other hand, the production process... Over-reliance on operators' personal experience requires new employees to undergo lengthy training to reach a proficient level, which not only increases the company's training costs but also limits the rapid expansion of production scale. In addition, the speed of manual bending is limited by factors such as the operator's physical strength and skill level, resulting in low efficiency, inability to achieve efficient mass production, unstable production efficiency, and difficulty in meeting market demand for product delivery. Therefore, in order to eliminate over-reliance on operators' experience, achieve standardized production, and improve efficiency, it is necessary to design a round tube bending machine that can meet the need for bending round hollow tubes at specific angles and diameters. Summary of the Invention

[0003] To address the problems in the background art, this utility model discloses a semi-automatic bending device for round tubes, including a rotating clamping mechanism, a clamping mechanism, and a bending die, which enables efficient batch bending of round hollow tubes at specific angles and diameters, improving production efficiency and reducing reliance on experience.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A semi-automatic tube bending device includes an operating table. A drive shaft is rotatably connected to the center of the operating table, passing through the upper and lower end faces of the operating table. The lower end of the drive shaft is connected to a drive mechanism, and the upper end of the drive shaft is detachably connected to a bending die via a bending die connecting shaft. A rotating arm is fixedly sleeved on the upper end of the drive shaft, and a rotating clamping mechanism is provided on the rotating arm. The rotating clamping mechanism includes a first guide rail extending radially along the drive shaft on the rotating arm, and a rotating clamping block slidably connected to the first guide rail. The rotating clamping block can slide back and forth along the axial direction of the first guide rail to approach or move away from the first guide rail. The bending die has a groove at the bottom of the rotating arm. An arc-shaped guide rail matching the groove is provided on the operating table. The arc-shaped guide rail extends along an arc centered on the drive shaft. Under the action of the drive mechanism, the rotating arm can drive the rotating clamp to rotate along the arc-shaped guide rail with the drive shaft as the center. A second guide rail is provided on the outside of the initial position of the rotating arm. The second guide rail is parallel to the rotating arm at the initial position. A clamping mechanism is slidably connected on the second guide rail. The clamping mechanism includes a sliding clamp. The rotating clamp and the sliding clamp can correspondingly clamp the head and tail ends of the round tube to be processed.

[0006] Furthermore, the semi-automatic tube bending device is further provided with a first lead screw arranged parallel to the first guide rail on the rotating arm. A first handwheel is sleeved on the driving end of the first lead screw. A T-nut is threaded onto the first lead screw. A slider matching the first guide rail is provided at the bottom of the T-nut. A rotating clamping block is provided at the end of the T-nut near the bending die. When the first lead screw is driven to rotate by the first handwheel, the T-nut can drive the rotating clamping block to slide back and forth along the first guide rail to approach or move away from the bending die.

[0007] Furthermore, in the semi-automatic tube bending device, the second guide rail is fixedly connected to the operating table, and a sliding seat is slidably connected to the second guide rail via a slider. A second lead screw is also provided on the operating table, which is parallel to the second guide rail. The sliding seat is fixedly connected to the lead screw nut threaded on the second lead screw. A second handwheel is sleeved on the driving end of the second lead screw. When the second lead screw is driven to rotate by the second handwheel, the lead screw nut can drive the sliding seat to slide back and forth along the second guide rail to approach or move away from the bending die. The sliding clamp is set on the sliding seat.

[0008] Furthermore, the semi-automatic tube bending device has a U-shaped groove extending along the axial direction of the sliding seat on the side of the sliding seat near the bending mold, and the sliding clamp is embedded in the U-shaped groove and slidably connected to the sliding seat.

[0009] Furthermore, the semi-automatic tube bending device is equipped with photoelectric sensors at the beginning and end of the arc-shaped guide rail, and the photoelectric sensors are electrically or communicatively connected to the controller of the transmission shaft drive mechanism.

[0010] Furthermore, the semi-automatic tube bending device has a flow divider plate located near the end of the arc-shaped guide rail. The bottom of the flow divider plate is fixedly connected to the operating table, and the top of the flow divider plate extends upward at an angle. The upper edge of the flow divider plate is slightly higher than the height of the clamping mechanism.

[0011] Furthermore, in the semi-automatic tube bending equipment, the operating table is connected to a horizontally set workbench, a heating mechanism for heating the tube to be processed is provided on the workbench, and a cabinet for storage is provided under the workbench.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model relates to a semi-automatic round tube bending equipment, comprising a rotary clamping mechanism, a clamping mechanism, and a bending die. During operation, the rotary clamping mechanism's rotating clamping block clamps the head of the round tube to be processed, while the clamping mechanism's sliding clamp holds the tail of the round tube. A rotating arm drives the rotary clamping block to rotate at a set angle. Simultaneously, the rotating clamping block clamps the middle of the round tube to be processed, rotating around the bending die at a set angle. This enables efficient batch bending of round hollow tubes at specific angles and diameters, improving production efficiency, reducing reliance on experience, replacing manual rotation, ensuring stable bending quality of the tubes, meeting standardized production requirements, improving labor efficiency, achieving efficient batch production, and ensuring stable production efficiency to meet market demands for product delivery. The positions of the rotary clamping block and the sliding clamp are adjustable to meet the needs of different bending angles and diameters for round hollow tubes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the working state of the bending equipment of this utility model;

[0015] Figure 2 This is a top view of the operating table of the bending equipment of this utility model;

[0016] Figure 3 yes Figure 2 Schematic diagram of the AA section structure;

[0017] Figure 4 This is a three-dimensional structural diagram of the operating table of the bending equipment of this utility model;

[0018] In the above figure: 1-operating table; 2-arc guide rail; 3-rotary clamping mechanism; 3.1-rotary clamping block; 3.2-T-shaped nut; 3.3-slider; 3.4-first guide rail; 3.5-first handwheel; 3.6-first lead screw; 4-bending die; 5-clamping mechanism; 5.1-sliding seat; 5.2-sliding fixture; 5.3-second lead screw; 5.4-second guide rail; 5.5-second handwheel; 6-diverter plate; 7-worktable; 8-heating mechanism; 9-motor reducer; 10-first photoelectric sensor; 11-second photoelectric sensor; 12-coupling; 13-drive shaft; 14-bending die connecting shaft; 15-rotating arm; 15.1-rotating arm body; 15.2-slide plate; 16-round tube to be processed. Detailed Implementation

[0019] To better understand this utility model, the following embodiments further illustrate its content. However, the content of this utility model is not limited to the following embodiments. It should be noted that the innovation of this utility model is the mechanical structure of the disclosed semi-automatic round tube bending device. The control system of the semi-automatic round tube bending device is not the innovation of this utility model, so it will not be described in detail here.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] Combined with appendix Figure 1-4This invention provides a semi-automatic tube bending device, comprising an operating table 1. A drive shaft 13 is rotatably connected to the center of the operating table 1 via a deep groove ball bearing. The drive shaft 13 passes through the upper and lower end faces of the operating table 1. The lower end of the drive shaft 13 is connected to a drive mechanism, which includes a motor reducer 9. The output end of the motor reducer 9 is connected to the drive shaft 13 via a coupling 12. A bending die 4 is detachably connected to the upper end of the drive shaft 13 via a bending die connecting shaft 14. A recessed receiving groove is provided on the side wall of the bending die 4. The round tube can be embedded in the receiving groove on the side wall of the bending die 4. A rotating arm 15 is also fixedly sleeved on the upper end of the drive shaft 13. The rotating arm 15 includes a rotating arm body 15.1 and a sliding plate 15.2 connected to the bottom end of the rotating arm body 15.1. A rotating clamping mechanism 3 is provided on the rotating arm body 15.1. The rotating clamping mechanism 3 includes a first guide rail 3.4 that extends radially along the drive shaft 13 on the rotating arm body 15.1. A rotating clamping block 3.1 is slidably connected to the first guide rail 3.4. The rotating clamping block 3.1 can move back and forth axially along the first guide rail 3.4. The bending die 4 is slid closer to or further away from the bending die 4. During operation, a matching bending die 4 is selected according to the radius of the tube to be bent. A slide groove is provided at the bottom of the slide plate 15.2. An arc-shaped guide rail 2 matching the slide groove is provided on the operating table 1. The arc-shaped guide rail 2 extends along an arc centered on the drive shaft 13. The central angle of the arc-shaped guide rail 2 is 260 degrees. Under the action of the drive mechanism, the rotating arm 15 can drive the rotating clamp 3.1 to rotate along the arc-shaped guide rail 2 with the drive shaft 13 as the center. A second guide rail 5.4 is provided on the outer side of the initial position of the rotating arm 15. The second guide rail 5.4 is arranged parallel to the rotating arm 15 in the initial position. A clamping mechanism 5 is slidably connected to the second guide rail 5.4. The clamping mechanism 5 includes a sliding clamp 5.2. The rotating clamp 3.1 and the sliding clamp 5.2 can clamp the head and tail ends of the round tube 16 to be processed. The positions of the rotating clamp 3.1 and the sliding clamp 5.2 can be adjusted to meet the bending of the tube body with different bending radii. The rotating clamp 3.1 and the sliding clamp 5.2 are respectively provided with recessed grooves at the ends facing the round tube 16 to be processed, and the round tube 16 to be processed can be embedded in the grooves.

[0023] During operation, return the rotating arm 15 to its initial position. Select a suitable bending die 4 based on the required bending angle and diameter of the circular hollow tube. For example, if a tube requires a bending radius of 200mm, a bending die 4 with a diameter of 400mm can be selected for bending. Adjust the rotation angle of the rotating arm 15 and the initial positions of the rotating clamp 3.1 and sliding clamp 5.2. The specific operation is as follows: Drive the first lead screw 3.6 to rotate via the first handwheel 3.5. The two ends of the first lead screw 3.6 are respectively connected to the corresponding lead screws. The first lead screw 3.6 rotates, simultaneously driving the T-nut 3.2 to move along the first lead screw 3.6. The T-nut 3.2 drives the rotating clamp 3.1 to slide along the first guide rail 3.4 to the target position. The second handwheel 5.5 drives the second lead screw 5.3 to rotate. The two ends of the second lead screw 5.3 are rotatably connected to the corresponding lead screw seats. Simultaneously, the rotation of the second lead screw 5.3, through the threaded connection of the corresponding lead screw nut, drives the sliding clamp 5.2 to move along the second guide rail 5.4 to the target position. The rotating clamp 3.1 and... The sliding clamp 5.2 is aligned in a straight line. The cylindrical tube 16 to be processed is fed into the rotating clamp 3.1 and the sliding clamp 5.2. The rotating clamp 3.1 and the bending die 4 together clamp the head of the cylindrical tube 16, ensuring that the cylindrical tube 16 does not disengage from the rotating clamp 3.1 when the rotating clamp 3.1 rotates it. The sliding clamp 5.2 holds the tail of the cylindrical tube 16. The tightness of the sliding clamp 5.2 in holding the cylindrical tube 16 ensures that the sliding clamp 5.2 can hold the cylindrical tube 16 firmly, and... When the rotating clamp 3.1 rotates, it can pull the round tube 16 to be processed to slide relative to the sliding clamp 5.2. The rotating arm 15 drives the rotating clamp 3.1 to rotate at a set angle. While rotating, the rotating clamp 3.1 clamps the middle of the round tube 16 to be processed and rotates around the bending mold 4 at a set angle to achieve bending of the hollow round tube at a specific angle. This enables efficient batch bending of round hollow tubes at specific angles and diameters, improves production efficiency, reduces personnel occupation and reliance on experience, and meets the needs of different bending angles and different bending diameters of round hollow tubes.

[0024] As an optional design, the semi-automatic tube bending device is preferably provided with a first lead screw 3.6 arranged parallel to the first guide rail 3.4 on the rotating arm 15. A first handwheel 3.5 is sleeved on the driving end of the first lead screw 3.6. A T-nut 3.2 is threadedly connected to the first lead screw 3.6. A slider 3.3 matching the first guide rail 3.4 is provided at the bottom of the T-nut 3.2. A rotating clamping block 3.1 is provided at one end of the T-nut 3.2 near the bending die 4. When the first lead screw 3.6 is driven to rotate by the first handwheel 3.5, the T-nut 3.2 can drive the rotating clamping block 3.1 to slide back and forth along the first guide rail 3.4 to approach or move away from the bending die 4.

[0025] As an optional design, the semi-automatic tube bending device is preferred. The second guide rail 5.4 is fixedly connected to the operating table 1. A sliding seat 5.1 is slidably connected to the second guide rail 5.4 via a slider 3.3. A second lead screw 5.3 is also provided on the operating table 1, which is parallel to the second guide rail 5.4. The second lead screw 5.3 is a trapezoidal lead screw, which has an automatic locking function to prevent the clamping mechanism from loosening due to the reaction force during tube bending. The sliding seat 5.1 is fixedly connected to the lead screw nut threaded on the second lead screw 5.3. A second handwheel 5.5 is sleeved on the driving end of the second lead screw 5.3. When the second lead screw 5.3 is rotated by the second handwheel 5.5, the lead screw nut can drive the sliding seat 5.1 to slide back and forth along the second guide rail 5.4 to approach or move away from the bending die 4. A sliding clamp 5.2 is set on the sliding seat 5.1.

[0026] As an optional design, the semi-automatic tube bending device is preferably provided with a U-shaped groove extending along the axial direction of the sliding seat 5.1 on one side of the sliding seat 5.1 near the bending mold 4. The sliding clamp 5.2 is embedded in the U-shaped groove and slidably connected to the sliding seat 5.1 to ensure that the outer surface of the bent tube will not generate hard friction and thus damage the product.

[0027] As an optional design, the semi-automatic tube bending device preferably has a first photoelectric sensor 10 located near the beginning of the arc-shaped guide rail 2 and a second photoelectric sensor 11 located near the end of the arc-shaped guide rail 2. The first photoelectric sensor 10 and the second photoelectric sensor 11 are electrically or communicatively connected to the controller of the motor reducer 9. When the first photoelectric sensor 10 or the second photoelectric sensor 11 detects that the rotating arm 15 has rotated to the beginning or end, it sends a signal to the controller of the motor reducer 9. The controller of the motor reducer 9 then controls the motor reducer 9 to stop operating, ensuring the safe operation of the rotating arm 15.

[0028] As an optional design, the semi-automatic tube bending device is preferably equipped with a flow divider 6 at the end of the arc-shaped guide rail 2. The bottom of the flow divider 6 is fixedly connected to the operating table 1, and the top of the flow divider 6 extends upward at an angle. The upper edge of the flow divider 6 is slightly higher than the height of the clamping mechanism 5. When the tube being bent is too long and the bending angle is large, the head and tail of the tube will collide and interfere, which will affect the bending effect. By adding the flow divider 6, the collision between the head and tail of the tube can be avoided. When the bent tube head passes the flow divider 6, the tube will move upward along the flow divider 6, avoiding collision with the tail of the tube.

[0029] As an optional design, the semi-automatic tube bending equipment is preferred. The operating table 1 is connected to the horizontally set workbench 7. A heating mechanism 8 for heating the tube 16 to be processed is set on the workbench 7. The heating source of the heating mechanism 8 uses resistance wire heating, and the heating range can be freely selected between 50-150°. After setting the temperature, simply place the part of the tube to be bent on the heating device. The heating device will heat the part of the tube to be bent to the set temperature through heat transfer and maintain it, thereby improving the efficiency of bending the tube. A cabinet for storage is set under the workbench 7.

[0030] The working process of this utility model is as follows:

[0031] Return the rotating arm 15 to its initial position. Select a suitable bending die 4 according to the angle and diameter of the circular hollow tube to be bent. Place the circular tube 16 to be processed in the sliding fixture 5.2 on the operating table 1. Rotate the second handwheel 5.5 on the clamping mechanism. While the second lead screw 5.3 rotates, it drives the sliding fixture 5.2 to move along the second guide rail 5.4 through the corresponding lead screw nut connected by the thread. Stop when the circular tube 16 to be processed and the bending die 4 are in contact. In this step, the tube should not be clamped too tightly. The sliding fixture 5.2 should be able to move axially relative to the sliding seat 5.1.

[0032] The first screw 3.6 is driven to rotate by the first handwheel 3.5. The rotation of the first screw 3.6 drives the T-nut 3.2 to move along the first screw 3.6. The T-nut 3.2 drives the rotating clamp 3.1 to slide along the first guide rail 3.4 to the position where the round tube 16 to be processed is clamped, and then stops. This step requires clamping the tube to prevent the round tube 16 to be processed from being displaced relative to the rotating clamp 3.1 when the rotating clamp 3.1 drives the round tube 16 to be processed to rotate.

[0033] Input the required bending angle on the operation panel. After inputting, start the program. The motor reducer 9 will run automatically and drive the transmission shaft 13 to rotate through the coupling 12. As the transmission shaft 13 rotates, it also drives the rotating arm 15 to rotate. The rotating clamp 3.1 bends the round tube 16 to be processed to the set angle value, replacing manual rotation. The bending quality of the tube is stable, meeting the requirements of standardized production, improving labor efficiency, realizing efficient mass production, and ensuring stable production efficiency to meet market demand for product delivery and achieve standardized production.

[0034] The bending angle range of the pipe bending equipment is 0-260°. When the motor reducer 9 runs to the required angle, stop, loosen the first handwheel 3.5 and the second handwheel 5.5, and remove the pipe.

[0035] Press the "Return to Zero" button on the screen again, and the motor reducer 9 will drive the rotating arm 15 back to the initial position, thus completing a complete processing flow.

[0036] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A semi-automatic bending device for round tubes, characterized in that: The device includes an operating table, with a drive shaft rotatably connected to the center of the operating table. The drive shaft passes through the upper and lower end faces of the operating table. The lower end of the drive shaft is connected to a drive mechanism, and the upper end of the drive shaft is detachably connected to a bending die via a bending die connecting shaft. A rotating arm is also fixedly sleeved on the upper end of the drive shaft, and a rotating clamping mechanism is provided on the rotating arm. The rotating clamping mechanism includes a first guide rail extending radially along the drive shaft on the rotating arm, and a rotating clamping block slidably connected to the first guide rail. The rotating clamping block can slide back and forth along the first guide rail to approach or move away from the bending die. A groove is provided at the bottom of the end of the rotating arm, and an arc-shaped guide rail is provided on the operating table to match the groove. The arc-shaped guide rail extends along an arc centered on the drive shaft. Under the action of the drive mechanism, the rotating arm can drive the rotating clamp to rotate along the arc-shaped guide rail with the drive shaft as the center. A second guide rail is provided on the outside of the initial position of the rotating arm. The second guide rail is parallel to the rotating arm at the initial position. A clamping mechanism is slidably connected on the second guide rail. The clamping mechanism includes a sliding clamp. The rotating clamp and the sliding clamp can correspondingly clamp the head and tail ends of the round tube to be processed.

2. The semi-automatic pipe bending apparatus of claim 1, wherein: The rotating arm is also provided with a first lead screw that is parallel to the first guide rail. A first handwheel is sleeved on the driving end of the first lead screw. A T-nut is threaded onto the first lead screw. A slider that matches the first guide rail is provided at the bottom of the T-nut. A rotating clamp is provided at the end of the T-nut that is close to the bending die. When the first lead screw is driven to rotate by the first handwheel, the T-nut can drive the rotating clamp to slide back and forth along the first guide rail to approach or move away from the bending die.

3. A semi-automatic pipe bending apparatus according to claim 2, characterised in that: The second guide rail is fixedly connected to the operating table. A sliding seat is slidably connected to the second guide rail via a slider. A second lead screw is also provided on the operating table, which is parallel to the second guide rail. The sliding seat is fixedly connected to the lead screw nut threaded on the second lead screw. A second handwheel is sleeved on the drive end of the second lead screw. When the second lead screw is rotated by the second handwheel, the lead screw nut can drive the sliding seat to slide back and forth along the second guide rail to approach or move away from the bending mold. The sliding clamp is set on the sliding seat.

4. The semi-automatic pipe bending apparatus of claim 3, wherein: A U-shaped groove extending along the axial direction of the sliding seat is provided on the side of the sliding seat near the bending mold, and the sliding clamp is embedded in the U-shaped groove and slidably connected to the sliding seat.

5. The semi-automatic pipe bending apparatus of claim 3, wherein the first and second bending tools are configured to bend the pipe in the first and second bending directions, respectively. Photoelectric sensors are installed at the beginning and end of the curved guide rail, and the photoelectric sensors are electrically or communicatively connected to the controller of the drive mechanism of the transmission shaft.

6. The semi-automatic tube bending device according to claim 3, characterized in that: in A flow divider is installed near the end of the curved guide rail. The bottom of the flow divider is fixedly connected to the operating table, and the top of the flow divider extends upward at an angle. The upper edge of the flow divider is slightly higher than the height of the clamping mechanism.

7. A semi-automatic pipe bending apparatus according to any one of claims 1 to 6, wherein: The operating table is connected to a horizontally set workbench. A heating mechanism for heating the round tube to be processed is set on the workbench, and a cabinet for storage is set under the workbench.

Images