Cold roll forming device for U-shaped bolt machining

Abstract

The utility model relates to the technical field of U-shaped bolt machining, in particular to a cold roll forming device for U-shaped bolt machining, which comprises a workbench, a rotating motor and a fixed disc are mounted on the workbench, an output shaft of the rotating motor at the bottom of the workbench penetrates through the workbench and the fixed disc to be connected with a connecting rod, and the rotating motor is used for driving the connecting rod to rotate; a bending block is arranged on the connecting rod, the bending block is used for being matched with the fixing disc to clamp and bend the bolt raw material, and an annular supporting plate used for supporting the bolt raw material and a stop block used for limiting one end of the bolt raw material are further arranged on the workbench; a detection mechanism and a controller are installed on the annular supporting plate, the detection mechanism is used for detecting the change state of the bolt raw materials in the bending process, and the controller is used for controlling the rotating motor to rotate and bend the bolt raw materials according to data of the detection mechanism. Adjustment and control machining can be carried out according to the states of the two ends of the U-shaped bolt in the machining process, the machining quality is guaranteed, and the product percent of pass is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of U-bolt processing, in particular to a cold bending forming device for processing U-bolts. Background Art

[0002] U-bolts, named for their U-shaped shape, feature threads at both ends for connection to nuts. They are commonly used in trucks to stabilize the chassis and frame. For example, leaf springs are connected using U-bolts. U-bolts are typically made from cold-drawn round steel. This steel is often used for manufacturing U-bolts due to its smooth surface, high dimensional accuracy, and superior mechanical properties. After being cut to length by a cutting machine, the steel needs to be bent by a bolt bender before proceeding to the next process.

[0003] In the existing U-bolt production process, there are bound to be defective products. Defective products include inadequate or excessive bending during processing, which causes the two ends of the U-bolt to be non-parallel or the angle does not meet the requirements. To this end, we propose a cold-bending forming device for U-bolt processing. Utility Model Content

[0004] The purpose of the utility model is to provide a cold-bending forming device for processing U-bolts, which has the advantages of adjusting and controlling the processing according to the status of the two ends of the U-bolt during the processing to ensure the processing quality, and solves the problem of inadequate bending or excessive bending during processing, which causes the two ends of the U-bolt to be non-parallel or the angle not meeting the requirements.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a cold-bending forming device for processing U-bolts, comprising a workbench, on which a rotating motor and a fixed plate are mounted, wherein an output shaft of the rotating motor at the bottom of the workbench passes through the workbench and the fixed plate and is connected to a connecting rod, and the rotating motor is used to drive the connecting rod to rotate;

[0006] The connecting rod is provided with a bending block, which is used to cooperate with the fixed plate to clamp the bolt material and bend it. The workbench is also provided with an annular support plate for supporting the bolt material, and a stopper for limiting one end of the bolt material;

[0007] A detection mechanism and a controller are installed on the annular support plate. The detection mechanism is used to detect the state of the bolt material during the bending process, and the controller is used to control the rotary motor to rotate and bend the bolt material according to data from the detection mechanism.

[0008] Preferably, the detection mechanism includes a first distance measuring sensor and a second distance measuring sensor, the probe of the first distance measuring sensor is aligned with one end of the bolt raw material, and the probe of the second distance measuring sensor is aligned with the other end of the bolt raw material, and the detection mechanism controls the operation of the rotating motor by detecting the distance between the two ends of the bolt raw material during the bending process.

[0009] Preferably, a hydraulic cylinder is installed on the workbench, and the output end of the hydraulic cylinder is connected to the stopper;

[0010] The bending block is threadedly connected to the connecting rod, and a fastening nut is sleeved on the side of the connecting rod away from the bolt material, and the fastening nut is used to fix the bending block.

[0011] Preferably, the outer sleeve of the fixed disk is provided with a movable sleeve which is coaxial with the fixed disk, and the movable sleeve is used to adjust the outer diameter of the fixed disk.

[0012] Preferably, an electric push rod and a push block are installed on the workbench, the inclined surface on the top of the push block matches the inclined surface on the bottom of the movable sleeve, the push block is connected to the electric push rod, and the electric push rod is used to push the push block laterally and drive the movable sleeve to rise upward.

[0013] Preferably, the number of the electric push rods and push blocks is not less than two groups, and the electric push rods are arranged below the fixed plate, and are used to push the movable sleeves one by one from the center of the fixed plate to the outside;

[0014] The push block is provided with a supporting top plate, and the supporting top plate is used for supporting the movable sleeve lifted by the push block.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The present invention provides a fixed disk, a stopper, and a bending block. A rotating motor drives the connecting rod and the stopper to clamp the bolt material and bend it along the fixed disk. The stopper blocks one end of the bolt material, allowing the other end to complete the bending. The annular support plate supports both ends of the bolt material throughout the bending process. By providing a controller, a first distance sensor, and a second distance sensor, the positions of the two ends of the bolt material can be detected to determine whether they meet the processing requirements, and the operation of the rotating motor can be controlled. When the bolt material is bent to the required position, the operation of the rotating motor is stopped to avoid the production of defective products. This solves the problem of incomplete bending or excessive bending during processing, which causes the two ends of the U-bolt to be non-parallel or the angle to not meet the requirements.

[0017] 2. The present invention employs a plurality of movable sleeves, each of which is circular and individually sleeved on the outside of a fixed plate. The addition of these sleeves allows the outer diameter of the fixed plate to be adjusted, thereby bending round-bottomed U-shaped bolts of varying diameters. A hydraulic cylinder is provided to adjust the lateral position of a stopper, limiting the position of bolts of varying sizes on the movable sleeve or fixed plate. A push block and an electric push rod are provided, and a controller controls the extension of the electric push rod, thereby controlling the rise of one or more movable sleeves from the center to the outside to form a large circular disk with the fixed plate, along which the bolts are bent. Because the bending block is threadedly connected to the connecting rod, the position of the bending block can be adjusted to clamp bolts of varying sizes on the fixed plate or movable sleeve, and the bending is achieved under the drive of a rotating motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model after bending;

[0020] Figure 3 This is a schematic diagram of the fixed disk and movable ring structure of the utility model.

[0021] In the figure: 1. Workbench; 2. Rotating motor; 3. Fixed plate; 4. Movable sleeve; 5. Connecting rod; 6. Hydraulic cylinder; 7. Stop block; 8. Bending block; 9. Fastening nut; 10. Bolt material; 11. Annular support plate; 12. First distance measuring sensor; 13. Second distance measuring sensor; 14. Controller; 15. Push block; 16. Support top plate; 17. Electric push rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1 and 2 As shown, a cold-bending forming device for processing U-bolts includes a workbench 1, on which a rotating motor 2 and a fixed plate 3 are mounted. The output shaft of the rotating motor 2 at the bottom of the workbench 1 passes through the workbench 1 and the fixed plate 3 and is connected to a connecting rod 5. The rotating motor 2 is used to drive the connecting rod 5 to rotate.

[0024] A bending block 8 is provided on the connecting rod 5, which is used to cooperate with the fixed disk 3 to clamp the bolt raw material 10 and bend it. The workbench 1 is also provided with an annular support plate 11 for supporting the bolt raw material 10, and a stopper 7 for limiting one end of the bolt raw material 10; the rotating motor 2 drives the connecting rod 5 and the stopper 7 to clamp the bolt raw material 10 and bend it along the fixed disk 3. The stopper 7 blocks one end of the bolt raw material 10 so that the other end can complete the bending. The annular support plate 11 can support both ends of the bolt raw material 10 during the entire bending process.

[0025] A detection mechanism and controller 14 are mounted on the annular support plate 11. Controller 14 utilizes a programmable logic controller (PLC). The detection mechanism detects the state of the bolt stock 10 during the bending process, and the controller 14 controls the rotating motor 2 to rotate and bend the bolt stock 10 based on the data from the detection mechanism. The detection mechanism includes a first distance sensor 12 and a second distance sensor 13. The probe of the first distance sensor 12 is aligned with one end of the bolt stock 10, while the probe of the second distance sensor 13 is aligned with the other end of the bolt stock 10. The detection mechanism controls the operation of the rotating motor 2 by detecting the distance between the two ends of the bolt stock 10 during the bending process. By providing the controller 14, the first distance sensor 12, and the second distance sensor 13, the position of the two ends of the bolt stock 10 can be detected to determine whether it meets the processing requirements. The operation of the rotating motor 2 is then controlled. When the bolt stock 10 is bent to the required position, the rotating motor 2 is stopped, preventing defective products from being produced. This solves the problem of incomplete or excessive bending during processing, which can result in non-parallel ends or an angle that does not meet the requirements.

[0026] Both the first distance measuring sensor 12 and the second distance measuring sensor 13 use optical sensors, specifically laser probe sensors with distance measuring functions. Since the size of the fixed disk or the size of the fixed disk after matching with the movable sleeve is fixed, the diameter of the bent round-bottomed U-bolt is known, and the angle is calculated by obtaining the distance between the two ends of the U-bolt. In addition, after the installation positions of the first distance measuring sensor 12 and the second distance measuring sensor 13 are determined, a test comparison can be performed to obtain the qualified distance data at the two ends of the U-bolt. If the data is too large, the rotating motor 2 continues to operate within the qualified data range. If the distance between the two ends of the U-bolt after processing of the rotating motor 2 is less than the qualified value, it means that it is excessively bent, and the settings of the rotating motor need to be adjusted to ensure the processing qualification rate.

[0027] A hydraulic cylinder 6 is mounted on the workbench 1, the output end of which is connected to a stopper 7. A bending block 8 is threadedly connected to a connecting rod 5. A tightening nut 9 is also mounted on the side of the connecting rod 5 away from the bolt stock 10. Tightening the tightening nut 9 secures the bending block 8 and prevents it from slipping during the bending process. The threaded connection between the bending block 8 and the connecting rod 5 facilitates adjustment of the bending block 8's position, allowing it to clamp bolt stocks 10 of varying sizes on the fixed plate 3 or the movable sleeve 4, and achieve bending driven by the rotating motor 2.

[0028] A movable sleeve 4 is provided on the outer surface of the fixed disk 3, which is concentric with the fixed disk 3. The movable sleeve 4 is annular and is used to adjust the outer diameter of the fixed disk 3. When a movable sleeve 4 is applied, the fixed disk 3 increases in size by one circle. According to the needs, the movable sleeve 4 and the annular support plate 11 can both support the bolt stock 10. By providing a plurality of movable sleeves 4, each of which is annular and is placed one by one on the outside of the fixed disk 3, the outer diameter of the fixed disk 3 can be adjusted by adding movable sleeves 4, thereby bending round-bottomed U-shaped bolts of different diameters. By providing a hydraulic cylinder 6, the hydraulic cylinder 6 can adjust the lateral position of the stopper 7 to limit the position of bolt stock 10 of different sizes on the movable sleeve 4 or the fixed disk 3.

[0029] like Figure 3 As shown, an electric push rod 17 and a push block 15 are installed on the workbench 1. The inclined surface on the top of the push block 15 matches the inclined surface on the bottom of the movable sleeve 4. By setting the push block 15 and the electric push rod 17, the controller 14 controls the extension of the electric push rod 17, and then controls one or more movable sleeves 4 from the center to the outside to rise and form a large disk with the fixed disk 3, and the bolt raw material 10 is bent along the outside of the large disk.

[0030] The inclined surface at the bottom of the movable sleeve 4 fits with the inclined surface at the top of the push block 15. When the push block 15 moves outward laterally, the movable sleeve 4 is lifted up and flush with the fixed disk 3. Push blocks 15 are set on both sides of the fixed disk 3. Two or more push blocks 15 move at the same time to lift one or more movable sleeves 4. The outer side of the lifted outermost movable sleeve 4 is used to bend the bolt raw material 10. The push block 15 is connected to the electric push rod 17, and the electric push rod 17 is used to push the push block 15 laterally and drive the movable sleeve 4 to rise upward. A push block 15 and an electric push rod 17 form a group, and the number of electric push rods 17 and push blocks 15 is not less than two groups, and the electric push rods 17 are arranged under the fixed disk 3, and are used to push the movable sleeves 4 one by one from the center of the fixed disk 3 to the outside; the fixed disk 3 is fixed on the workbench 1, and the fixed disk 3 is mainly subjected to lateral force during the bending process. When the movable sleeve 4 is raised, it is also subjected to lateral force. The force of the movable sleeve 4 is transmitted to the fixed disk 3, and the fixed disk 3 transmits the force to the workbench 1, and will not be directly transmitted to the push block 15 and the electric push rod 17, and a support top plate 16 is provided on the push block 15. The movable sleeve 4 after being lifted is supported by multiple support top plates 16, and the support top plate 16 only bears the gravity of the movable sleeve 4.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold-bending forming device for processing U-bolts, comprising a workbench (1), characterized in that: A rotating motor (2) and a fixed disk (3) are mounted on the workbench (1); an output shaft of the rotating motor (2) at the bottom of the workbench (1) passes through the workbench (1) and the fixed disk (3) and is connected to a connecting rod (5); the rotating motor (2) is used to drive the connecting rod (5) to rotate; The connecting rod (5) is provided with a bending block (8), and the bending block (8) is used to cooperate with the fixing plate (3) to clamp the bolt material (10) and bend it. The workbench (1) is also provided with an annular support plate (11) for supporting the bolt material (10), and a stopper (7) for limiting one end of the bolt material (10); A detection mechanism and a controller (14) are installed on the annular support plate (11). The detection mechanism is used to detect the state of the bolt material (10) during the bending process. The controller (14) is used to control the rotating motor (2) to rotate and bend the bolt material (10) based on data from the detection mechanism.

2. The cold-bending forming device for processing U-bolts according to claim 1, characterized in that: The detection mechanism comprises a first distance measuring sensor (12) and a second distance measuring sensor (13), wherein a probe of the first distance measuring sensor (12) is aligned with one end of the bolt material (10), and a probe of the second distance measuring sensor (13) is aligned with the other end of the bolt material (10), and the detection mechanism controls the operation of the rotating motor (2) by detecting the distance between the two ends of the bolt material (10) during the bending process.

3. The cold-bending forming device for processing U-bolts according to claim 2, characterized in that: A hydraulic cylinder (6) is installed on the workbench (1), and the output end of the hydraulic cylinder (6) is connected to a stopper (7); The bending block (8) is threadedly connected to the connecting rod (5), and a fastening nut (9) is sleeved on the side of the connecting rod (5) away from the bolt material (10), and the fastening nut (9) is used to fix the bending block (8).

4. The cold-bending forming device for processing U-bolts according to claim 3, characterized in that: The outer shell of the fixed disk (3) is provided with a movable sleeve (4) which is cocentric with the fixed disk (3), and the movable sleeve (4) is used to adjust the outer diameter of the fixed disk (3).

5. The cold-bending forming device for processing U-bolts according to claim 4, characterized in that: An electric push rod (17) and a push block (15) are installed on the workbench (1). The inclined surface on the top of the push block (15) matches the inclined surface on the bottom of the movable sleeve (4). The push block (15) is connected to the electric push rod (17). The electric push rod (17) is used to push the push block (15) laterally and drive the movable sleeve (4) to rise upward.

6. The cold-bending forming device for processing U-bolts according to claim 5, characterized in that: The number of the electric push rods (17) and push blocks (15) is not less than two groups, and the electric push rods (17) are arranged below the fixed plate (3) and are used to push the movable sleeves (4) one by one from the center of the fixed plate (3) to the outside; A supporting top plate (16) is provided on the pushing block (15), and the supporting top plate (16) is used to support the movable sleeve (4) lifted by the pushing block (15).

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