A protection device for preventing breakage of a positioning rod of a cold bending machine

Abstract

The utility model discloses a kind of prevent the protection device of cold bending machine positioning rod fracture, it is related to cold bending machine technical field, including workbench, first positioning rod and second positioning rod, the upper portion of workbench is equipped with support frame, the upper surface of workbench is equipped with support seat in left and right sides, the opposite side of support seat is equipped with guide sliding slot, the lower surface of support plate is equipped with rubber buffer block in left and right sides, the upper surface of workbench is equipped with pressure sensor assembly, the lower surface of support plate is equipped with first wedge in left and right sides, the opposite side of support seat is equipped with second wedge by guide telescopic link installation. The protection device of prevent the cold bending machine positioning rod fracture, rubber buffer block, shock-absorbing spring and damper constitute multistage buffer system, effectively absorb impact load in cold bending process, reduce the stress suffered by first positioning rod and second positioning rod, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of cold bending machine technology, specifically a protective device to prevent the positioning rod of a cold bending machine from breaking. Background Technology

[0002] Cold bending machines, widely used in steel structure processing, tunnel support, and bridge construction, are primarily used to bend various types of steel into desired arc or circular structures at room temperature. Compared to hot bending, cold bending machines eliminate the need for high-temperature heating, effectively preventing strength reduction and deformation caused by high temperatures. They also offer advantages such as high processing efficiency, low energy consumption, and stable forming accuracy. In tunnel construction, cold bending machines can process steel into arch frames to support the tunnel's surrounding rock, ensuring construction safety. In steel structure factory construction, they can quickly bend curved steel beams, improving the stability of the building structure.

[0003] During operation, the positioning rod of the cold bending machine must withstand enormous bending stress and friction to ensure that the steel section remains accurately positioned during the bending process.

[0004] For example, Chinese utility model patent application number 202121803529.9 discloses a multifunctional adjustable cold bending machine. It uses two sets of first guide structures to guide and convey external steel materials. A sliding second base facilitates the lateral movement and adjustment of the first guide structures along the adjustment groove. A second push rod controls the distance between the second and first guide structures, and a first push rod controls the movement and adjustment of the first guide structures along the adjustment groove. However, this device still has certain shortcomings.

[0005] When bending the workpiece, the auxiliary plate is supported by the telescopic rod. However, the telescopic rod is directly fixed to the platform, which can easily cause it to bear a large impact force. Long-term use can cause the fixed part to loosen, deform, or even break the telescopic rod.

[0006] Therefore, we propose a protective device to prevent the positioning rod of a cold bending machine from breaking, in order to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this utility model is to provide a protective device to prevent the positioning rod of a cold bending machine from breaking, so as to solve the problem mentioned in the background art that in the current market, when bending workpieces, the auxiliary plate is supported by a telescopic rod, and the telescopic rod is directly fixed on the platform, which easily leads to the telescopic rod bearing a large impact force. Long-term use will cause the fixed part to loosen, deform, or even break the telescopic rod.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a protective device for preventing the breakage of a positioning rod in a cold bending machine, comprising a worktable, a first positioning rod, and a second positioning rod. A support frame is installed above the worktable, and a cold bending head is provided below the support frame. Support seats are installed on both the left and right sides of the upper surface of the worktable. Guide grooves are provided on opposite sides of the support seats, and a support plate is connected between the support seats. Rubber buffer blocks are installed on both the left and right sides of the lower surface of the support plate, and an abutment block is installed on the lower surface of the support plate. A pressure sensor assembly is installed on the upper surface of the worktable. First wedges are installed on both the left and right sides of the lower surface of the support plate. Second wedges are installed on opposite sides of the support seats via guide telescopic rods, and the second wedges are connected to the support seats via shock-absorbing springs.

[0009] A first positioning rod and a second positioning rod are installed sequentially from left to right on the top of the support plate, and a positioning head is installed above the first positioning rod and the second positioning rod. A first connecting sleeve and a second connecting sleeve are respectively installed on the first positioning rod and the second positioning rod, and the first connecting sleeve and the second connecting sleeve are connected to each other by a connecting rod.

[0010] Preferably, positioning plates are installed on the lower left and right sides of the support frame via electric telescopic rods, and the support frame is located above the support base.

[0011] With the above structural design, the electric telescopic rod under the support frame drives the positioning plate to fix the workpiece, ensuring the stability of the workpiece during the cold bending process.

[0012] Preferably, a cylinder is installed above the support frame, and the lower part of the cylinder is connected to the cold bending head via a conveying rod, with the cold bending head located directly above the positioning head.

[0013] With the above structural design, the cylinder drives the cold bending head to press down precisely, and works in conjunction with the positioning head to achieve workpiece bending. The first positioning rod and the second positioning rod are supported by the positioning head. The structure has strong synergy and avoids breakage caused by excessive force on a single point.

[0014] Preferably, the left and right sides of the support plate abut against the guide groove, and the support plate is slidably connected to the guide groove.

[0015] With the above structural design, the guide groove provides limiting guidance for the support plate, ensuring smooth up and down movement of the support plate, preventing uneven force on the first and second positioning rods caused by offset, and improving the stability of the buffer system.

[0016] Preferably, the lower part of the rubber buffer block is fixedly connected to the upper surface of the workbench, the pressure sensor assembly is located directly below the abutment block, and when the abutment block moves downward under force, it abuts against the pressure sensor assembly. The pressure sensor assembly is connected to the PLC controller, and an alarm light is installed on the left side of the support frame. The PLC controller is connected to the alarm light.

[0017] With the above structural design, the pressure sensor assembly monitors the impact force in real time. When overloaded, the PLC controller triggers an alarm light to provide early warning, enabling early intervention in faults and preventing the first and second positioning rods from breaking due to overload, thus reducing equipment downtime losses.

[0018] Preferably, the shock-absorbing spring is provided with a damper inside, which is connected to the support base and the second wedge, and the inclined surface of the second wedge corresponds to the inclined surface of the first wedge.

[0019] With the above structural design, the combination of shock-absorbing spring and damper absorbs the impact energy, and the inclined structure of the first and second wedge blocks converts the impact force into lateral compressive force. The load is dispersed by the guide telescopic rod, further reducing the stress on the first and second positioning rods.

[0020] Preferably, reinforcing ribs are installed on the outer sides of both the first and second positioning rods, and multiple reinforcing ribs are provided.

[0021] The above structural design enhances the structural rigidity and synergistic stress-bearing capacity of the first and second positioning rods by reinforcing ribs and connecting rods. The distribution of multiple sets of reinforcing ribs improves bending resistance and prevents fracture caused by local stress concentration.

[0022] Compared with the prior art, the beneficial effects of this utility model are: the protective device for preventing the positioning rod of the cold bending machine from breaking:

[0023] 1. Multiple buffering and shock absorption: The rubber buffer block, shock absorption spring and damper form a multi-level buffering system, which effectively absorbs the impact load during the cold bending process, reduces the stress on the first positioning rod and the second positioning rod, and extends the service life.

[0024] 2. Overload warning and structural reinforcement: The pressure sensor assembly monitors the impact force in real time, and the alarm light will warn of overload and remind you to stop and adjust; the reinforcing ribs and connecting rods enhance the rigidity and synergy of the first and second positioning rods, and improve the fracture resistance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the protective structure of the first and second positioning rods of this utility model;

[0027] Figure 3 This utility model Figure 2 Mid-view structural diagram;

[0028] Figure 4 This is a schematic diagram showing the positional structure of the first and second wedge blocks of this utility model;

[0029] Figure 5 This is a schematic diagram of the connection structure between the first positioning rod and the second positioning rod of this utility model.

[0030] In the diagram: 1. Workbench; 2. Support frame; 3. Cold bending head; 4. Support base; 5. Guide groove; 6. Support plate; 7. Rubber buffer block; 8. Abutment block; 9. Pressure sensor assembly; 10. Alarm light; 11. First wedge; 12. Guide telescopic rod; 13. Second wedge; 14. Shock-absorbing spring; 15. Damper; 16. First positioning rod; 17. Second positioning rod; 18. Positioning head; 19. Reinforcing rib; 20. First connecting sleeve; 21. Second connecting sleeve; 22. Connecting rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5This utility model provides a technical solution: a protective device to prevent the positioning rod of a cold bending machine from breaking, including a workbench 1, a support frame 2, a cold bending head 3, a support base 4, a guide groove 5, a support plate 6, a rubber buffer block 7, an abutment block 8, a pressure sensor assembly 9, an alarm light 10, a first wedge 11, a guide telescopic rod 12, a second wedge 13, a shock-absorbing spring 14, a damper 15, a first positioning rod 16, a second positioning rod 17, a positioning head 18, a reinforcing rib 19, a first connecting sleeve 20, a second connecting sleeve 21, and a connecting rod 22. The support frame 2 is installed above the workbench 1, and the cold bending head 3 is arranged below the support frame 2. Positioning plates are installed on the left and right sides below the support frame 2 via electric telescopic rods, and the support frame 2 is located on the support base 4. Above the worktable 1, when the cold bending machine is working, the workpiece is placed on the support base 4. The positioning plate is moved downward by the electric telescopic rod to fix the workpiece. A cylinder is installed above the support frame 2, and the lower part of the cylinder is connected to the cold bending head 3 through the conveying rod. The cold bending head 3 is located directly above the positioning head 18. After the workpiece is fixed, the cylinder is started. The cylinder moves the cold bending head 3 downward through the conveying rod. Through the cooperation of the cold bending head 3 and the positioning head 18 below, the workpiece is bent. Support bases 4 are installed on both the left and right sides of the upper surface of the worktable 1. Guide grooves 5 are opened on the opposite side of each support base 4. Support plates 6 are connected between the support bases 4. The left and right sides of the support plates 6 abut against the guide grooves 5. The support plates 6 and the guide grooves 5 are slidably connected. The support plate 6 is guided and limited by the guide groove 5, allowing it to move up and down along the guide groove 5 when under force. Rubber buffer blocks 7 are installed on both sides of the lower surface of the support plate 6. The lower part of the rubber buffer blocks 7 is fixedly connected to the upper surface of the worktable 1. The pressure sensor assembly 9 is located directly below the abutment block 8. When the abutment block 8 moves downward under force, it abuts against the pressure sensor assembly 9. The pressure sensor assembly 9 is connected to the PLC controller. An alarm light 10 is installed on the left side of the support frame 2, and the PLC controller is connected to the alarm light 10. When the first positioning rod 16 and the second positioning rod 17 are under force, the support plate 6 moves downward to compress the rubber buffer blocks 7. The rubber buffer blocks 7 provide cushioning for the support plate 6, the first positioning rod 16, and the second positioning rod 17. The action of the impact block 8 is to press the pressure sensor assembly 9. The pressure sensor assembly 9 detects the downward pressure of the impact block 8. When the pressure exceeds the threshold, the pressure sensor assembly 9 transmits a signal to the PLC controller. The PLC controller activates the alarm light 10 to warn the operator and remind them to adjust the pressure in time to prevent the first positioning rod 16 and the second positioning rod 17 from breaking due to excessive pressure. The impact block 8 is installed on the lower surface of the support plate 6, and the pressure sensor assembly 9 is installed on the upper surface of the worktable 1. The first wedge block 11 is installed on both the left and right sides of the lower surface of the support plate 6. The second wedge block 13 is installed on the opposite side of the support base 4 through the guide telescopic rod 12. The second wedge block 13 is connected to the support base 4 through the shock-absorbing spring 14.The shock-absorbing spring 14 has a damper 15 inside. The damper 15 is connected to the support base 4 and the second wedge 13. The inclined surface of the second wedge 13 corresponds to the inclined surface of the first wedge 11. When the support plate 6 moves downward under force, the support plate 6 drives the first wedge 11 to squeeze the second wedge 13. The guide telescopic rod 12 compresses the shock-absorbing spring 14 and the damper 15, absorbing impact energy and reducing the impact force on the first positioning rod 16 and the second positioning rod 17.

[0033] A first positioning rod 16 and a second positioning rod 17 are installed sequentially from left to right on the upper part of the support plate 6. A positioning head 18 is installed above the first positioning rod 16 and the second positioning rod 17. A first connecting sleeve 20 and a second connecting sleeve 21 are respectively installed on the first positioning rod 16 and the second positioning rod 17. The first connecting sleeve 20 and the second connecting sleeve 21 are connected by a connecting rod 22. Reinforcing ribs 19 are installed on the outer side of the first positioning rod 16 and the second positioning rod 17. Multiple reinforcing ribs 19 are provided. The first connecting sleeve 20, the second connecting sleeve 21 and the connecting rod 22 enhance the cooperative force-bearing capacity of the first positioning rod 16 and the second positioning rod 17. The reinforcing ribs 19 improve the structural strength of the first positioning rod 16 and the second positioning rod 17 and prevent breakage.

[0034] Working principle: When using this protective device to prevent the positioning rods of the cold bending machine from breaking, firstly, when the first positioning rod 16 and the second positioning rod 17 are subjected to force, the support plate 6 moves downward to compress the rubber buffer block 7. The rubber buffer block 7 acts as a buffer for the support plate 6, the first positioning rod 16, and the second positioning rod 17. The abutment block 8 presses against the pressure sensor assembly 9. The pressure sensor assembly 9 detects the downward pressure of the abutment block 8. When the pressure exceeds the threshold, the pressure sensor assembly 9 transmits a signal to the PLC controller. The PLC controller activates the alarm light 10 to warn the operator and remind them to adjust the device in time to prevent the first positioning rod 16 and the second positioning rod 17 from breaking due to excessive pressure. At the same time, when the support plate 6 moves downward under force, the support plate 6 drives the first wedge block 11 to press against the second wedge block 13. The guide telescopic rod 12 compresses the shock-absorbing spring 14 and the damper 15 to absorb impact energy and reduce the impact force on the first positioning rod 16 and the second positioning rod 17.

[0035] The first connecting sleeve 20, the second connecting sleeve 21, and the connecting rod 22 enhance the cooperative force-bearing capacity of the first positioning rod 16 and the second positioning rod 17. The reinforcing rib 19 improves the structural strength of the first positioning rod 16 and the second positioning rod 17, preventing breakage, thereby completing a series of tasks. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective device for preventing the breakage of a positioning rod in a cold bending machine, comprising a worktable (1), a first positioning rod (16), and a second positioning rod (17), wherein a support frame (2) is installed above the worktable (1), and a cold bending head (3) is provided below the support frame (2), and support seats (4) are installed on both the left and right sides of the upper surface of the worktable (1), characterized in that: Guide grooves (5) are provided on opposite sides of the support base (4), and support plates (6) are connected between the support bases (4). Rubber buffer blocks (7) are installed on the left and right sides of the lower surface of the support plate (6), and abutment blocks (8) are installed on the lower surface of the support plate (6). Pressure sensor assembly (9) is installed on the upper surface of the workbench (1). First wedges (11) are installed on the left and right sides of the lower surface of the support plate (6). Second wedges (13) are installed on opposite sides of the support base (4) through guide telescopic rods (12), and the second wedges (13) are connected to the support base (4) through shock-absorbing springs (14). A first positioning rod (16) and a second positioning rod (17) are installed sequentially from left to right on the upper part of the support plate (6), and a positioning head (18) is installed above the first positioning rod (16) and the second positioning rod (17). A first connecting sleeve (20) and a second connecting sleeve (21) are respectively installed on the first positioning rod (16) and the second positioning rod (17), and the first connecting sleeve (20) and the second connecting sleeve (21) are connected by a connecting rod (22).

2. The protective device for preventing breakage of the positioning rod of a cold bending machine according to claim 1, characterized in that: Positioning plates are installed on the lower left and right sides of the support frame (2) via electric telescopic rods, and the support frame (2) is located above the support base (4).

3. The protective device for preventing breakage of the positioning rod of a cold bending machine according to claim 2, characterized in that: A cylinder is installed above the support frame (2), and the lower part of the cylinder is connected to the cold bending head (3) via a conveying rod. The cold bending head (3) is located directly above the positioning head (18).

4. The protective device for preventing breakage of the positioning rod of a cold bending machine according to claim 1, characterized in that: The left and right sides of the support plate (6) abut against the guide groove (5), and the support plate (6) and the guide groove (5) are slidably connected.

5. The protective device for preventing breakage of the positioning rod of a cold bending machine according to claim 1, characterized in that: The rubber buffer block (7) is fixedly connected to the upper surface of the workbench (1) below. The pressure sensor assembly (9) is located directly below the abutment block (8). When the abutment block (8) moves downward under force, it abuts against the pressure sensor assembly (9). The pressure sensor assembly (9) is connected to the PLC controller. An alarm light (10) is installed on the left side of the support frame (2). The PLC controller is connected to the alarm light (10).

6. The protective device for preventing breakage of the positioning rod of a cold bending machine according to claim 5, characterized in that: The damping spring (14) is equipped with a damper (15) inside. The damper (15) is connected to the support base (4) and the second wedge (13). The inclined surface of the second wedge (13) corresponds to the inclined surface of the first wedge (11).

7. The protective device for preventing the breakage of the positioning rod of a cold bending machine according to claim 1, characterized in that: The first positioning rod (16) and the second positioning rod (17) are both equipped with reinforcing ribs (19) on their outer sides, and there are multiple reinforcing ribs (19).

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