Automatic tail picking device for bar rolling cooling bed

Abstract

The application relates to the technical field of steel bar production equipment, and discloses a bar rolling cooling bed automatic tail picking device, which comprises a basic positioning assembly, a precise counting and identifying assembly, a pneumatic tail picking execution assembly, an electrical control assembly and a cooling bed. The basic positioning assembly comprises a bottom plate and a tail blocking plate. The precise counting and identifying assembly comprises a pneumatic reversing electromagnetic valve and an electrical control box. The pneumatic tail picking execution assembly comprises a lifting support plate and a small air cylinder. The electrical control assembly comprises an electrical control box. The basic positioning assembly, the precise counting and identifying assembly and the electrical control assembly are matched with each other, so that automatic and precise tail picking can be realized. The wear-resistant counting rod and the stable proximity switch can avoid false signals. The precise action of the pneumatic execution mechanism can completely replace manual tail picking, the problems of low accuracy and high labor intensity of manual tail picking can be solved, and the safety hidden danger of on-site operation can be eliminated.

Description

Technical Field

[0001] This invention relates to the technical field of steel bar production equipment, specifically to an automatic tail-picking device for a bar cooling bed. Background Technology

[0002] In the bar rolling process, the finished steel bars formed after rolling will have a quality defect of about 20cm at the tail due to the characteristics of the rolling process. This defective section needs to be completely removed in the cold shearing process to ensure the mechanical properties and appearance quality of the finished steel bars. In the existing production process, the steel bars are conveyed to the cooling bed after being sheared by a multiple-length shear, and then aligned into rows by an alignment roller before being sent to the cold shearing station for shearing. However, the multiple-length shear does not have the function of cutting off the head and tail, and the cold shear cannot separate the defective tail separately. It can only cut the defective section and the qualified section simultaneously. At the same time, in traditional production, either manual tail picking is required, which is not only labor-intensive and has a low accuracy rate, but also poses on-site operation safety hazards. Alternatively, there are no effective tail picking measures, resulting in a large number of qualified steel bars being wasted by being cut along with the steel bars, which significantly reduces the yield.

[0003] Furthermore, existing counting devices on the alignment rollers of the cooling bed are susceptible to counting errors due to the gaps between the multiple lengths of the reinforcing bars, and the proximity switches are prone to wear and tear, generating false signals that cause erratic operation of the tail-picking actuator, making it impossible to achieve precise tail picking. To address these issues, an automatic tail-picking device for the cooling bed is designed, integrating precise counting, automatic identification, pneumatic tail picking, and program optimization. This device replaces manual operation, achieving precise and automatic separation of defective tail sections and reducing cold shearing losses at the source. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic tail-picking device for bar rolling cold presses. This solves the problems in traditional production where either manual tail-picking is required, which is not only labor-intensive and has low accuracy, but also poses safety hazards during on-site operation, or there are no effective tail-picking measures, resulting in the waste of a large number of qualified steel bars being sheared along with the bar, significantly reducing the yield.

[0005] This invention provides the following technical solution: an automatic tail-picking device for a bar rolling mill cooling bed, comprising a basic positioning component, a precise counting and identification component, a pneumatic tail-picking execution component, an electrical control component, and a cooling bed. The basic positioning component includes a base plate and a tail-picking baffle. The precise counting and identification component includes a pneumatic reversing solenoid valve and an electrical control box. The pneumatic tail-picking execution component includes a lifting support plate and a small cylinder. The electrical control component includes an electrical control box.

[0006] The cooling bed is uniformly equipped with several roller conveyor baffles. A base plate is located at the end of the cooling bed, and a tail-lifting baffle is located at the top of the base plate. A pre-drilled hole is provided in the middle of the side of the tail-lifting baffle, and a small cylinder is installed in the pre-drilled hole. A lifting support plate is located on the top side of the base plate. The drive end of the small cylinder is connected to the lifting support plate via a push connecting rod. A pneumatic reversing solenoid valve is located on the side of the roller conveyor baffle, and is connected to the small cylinder via an air supply connecting pipe. A high-pressure air pipe is connected to the side of the pneumatic reversing solenoid valve. A counting rod is located in the middle of the side of the roller conveyor baffle, and a support base is located on the bottom side of the counting rod. Two rotating connecting rods are symmetrically rotatably mounted on the support base. The ends of the rotating connecting rods are rotatably connected to the sides of the counting rod. A return spring is sleeved on the rotating connecting rod, with one end connected to the counting rod and the other end connected to the support base.

[0007] Preferred technical solution 1: A proximity switch is provided on the bottom side of the counting rod, and a shielded wire is connected to the proximity switch.

[0008] Preferred technical solution 2: An electrical control box is provided on the side of the cooling bed, and a signal converter is provided on the top of the electrical control box. The end of the shielded wire is connected to the signal converter.

[0009] Preferred technical solution three: The longitudinal section of the tail-lifting baffle is stepped.

[0010] This design allows the ends of the reinforcing bars to be raised to the tail end baffle for support.

[0011] Preferred technical solution four: The top surface of the lifting support plate is provided with several anti-slip textures.

[0012] This solution enables the lifting support plate to provide more stable end-to-end support for the reinforcing bars.

[0013] Preferred technical solution five: The electrical control box is connected to the cooling bed via a fixing plate.

[0014] This solution allows the electrical control box to be installed more stably on the cooling bed.

[0015] Compared with the prior art, the present invention provides an automatic tail-picking device for a bar rolling cooling bed, which has the following beneficial effects:

[0016] This invention, by setting up a basic positioning component, a precise counting and identification component, a pneumatic tail-picking execution component, and an electrical control component, can achieve automatic and precise tail picking with a tail picking accuracy rate of over 98% through the cooperation of the above components.

[0017] The optimized counting program eliminates the impact of double-meter step-by-step operation, and the wear-resistant counting rod with a stable proximity switch avoids false signals. Combined with the precise action of the pneumatic actuator, it completely replaces manual tail picking, solving the problems of low accuracy and high labor intensity of manual tail picking, and eliminating on-site operation safety hazards.

[0018] Significantly reduce cold shearing loss and improve yield: By using tail-end baffles with a 20cm spacing, the defective tail end and the qualified section are physically separated, so that cold shearing only needs to cut the defective section, avoiding the qualified steel bars being cut off along with it. The cold shearing loss is converted into complete length, with a conversion rate of 22% and a steady increase in yield of 0.24%. Based on the design output of 900,000 tons / year in the high-strength bar workshop, the annual output of φ22-φ36 steel bars can be increased by 1,663 tons.

[0019] Reduce production costs and create significant economic benefits: The tail-picking device transforms non-standard length and cold-sheared heads into finished products. The price difference per ton between finished products and non-standard length is 950 yuan, which can create direct economic benefits of about 1,579,850 yuan per year. The device uses scrap steel plates to make basic components, and the cylinders, solenoid valves and other accessories are all general-purpose parts, resulting in low manufacturing costs and simple maintenance.

[0020] Highly adaptable to meet the production needs of multiple specifications: The touch screen can set different multiples of steel bars according to specifications, and the PLC control program automatically adapts to the idle step calculation, which can meet the tail-picking needs of steel bars with different diameters and multiples of φ22-φ36 without replacing the core components, and is compatible with multiple specifications of bar rolling processes.

[0021] Improve the level of production automation and reduce equipment failure rate: The device is fully automated and has good linkage with the original equipment of the cooling bed. The counting rod is made of wear-resistant material and the proximity switch is protected, which greatly reduces the frequency of equipment failure, reduces production downtime caused by tail-picking failure, and improves production continuity.

[0022] Simple structure and easy to promote and apply: The device is modularly designed, and the basic positioning component, counting component and execution component can be disassembled and replaced individually. It is easy to install and debug, and does not require large-scale modification of the original cooling bed structure. It can be promoted to all bar rolling production lines of the company. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of the structure of the reserved hole in the middle;

[0025] Figure 3 This is a side view of the structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of the structure of the pneumatic directional solenoid valve.

[0027] In the diagram: 1. Cooling bed; 2. Roller conveyor baffle; 3. Base plate; 4. Tail-mounting baffle; 5. Reserved hole; 6. Lifting support plate; 7. Small cylinder; 8. Push connecting rod; 9. Pneumatic reversing solenoid valve; 10. High-pressure air pipe; 11. Counter rod; 12. Support base frame; 13. Rotating connecting rod; 14. Return spring; 15. Proximity switch; 16. Shielded wire; 17. Electrical control box; 18. Signal converter. Detailed Implementation

[0028] Please see Figure 1-4 ,

[0029] Example 1: An automatic tail-picking device for a bar rolling mill cooling bed, comprising a basic positioning component, a precise counting and identification component, a pneumatic tail-picking execution component, an electrical control component, and a cooling bed 1. The basic positioning component includes a base plate 3 and a tail-picking baffle 4. The precise counting and identification component includes a pneumatic reversing solenoid valve 9 and an electrical control box 17. The pneumatic tail-picking execution component includes a lifting support plate 6 and a small cylinder 7. The electrical control component includes an electrical control box 17.

[0030] Several roller conveyor baffles 2 are evenly arranged on the cooling bed 1. A base plate 3 is provided at the end of the cooling bed 1. A tail-lifting baffle 4 is provided at the top of the base plate 3. A reserved hole 5 is provided in the middle of the side of the tail-lifting baffle 4. A small cylinder 7 is installed in the reserved hole 5. A lifting support plate 6 is provided on the top side of the base plate 3. The driving end of the small cylinder 7 is connected to the lifting support plate 6 through a push connecting rod 8. A pneumatic reversing solenoid valve 9 is provided on the side of the roller conveyor baffle 2. The pneumatic reversing solenoid valve 9 is connected to the small cylinder through an air supply connecting pipe. 7 are connected, and a high-pressure air pipe 10 is connected to the side of the pneumatic reversing solenoid valve 9. A counting rod 11 is set in the middle of the side of the roller conveyor baffle 2. A support base 12 is set on the bottom side of the counting rod 11. Two rotating connecting rods 13 are symmetrically rotatably arranged on the support base 12. The end of the rotating connecting rod 13 is rotatably connected to the side of the counting rod 11. A return spring 14 is sleeved on the rotating connecting rod 13. One end of the return spring 14 is connected to the counting rod 11, and the other end of the return spring 14 is connected to the support base 12.

[0031] One end of the reset spring 14 is connected to the counting rod 11, and the other end of the reset spring 14 is connected to the support base 12. A proximity switch 15 is provided on the bottom side of the counting rod 11, and a shielded wire 16 is connected to the proximity switch 15. An electrical control box 17 is provided on the side of the cooling bed 1, and a signal converter 18 is provided on the top of the electrical control box 17. The end of the shielded wire 16 is connected to the signal converter 18.

[0032] Example 2: The difference between this example and Example 1 is that the longitudinal section of the tail baffle 4 is stepped.

[0033] This allows the ends of the reinforcing bars to be raised to the tail plate 4 for support.

[0034] Example 3: The difference between this example and Example 1 is that the top surface of the lifting support plate 6 is provided with several anti-slip textures.

[0035] This makes the end contact support of the six pairs of reinforcing bars in the lifting support plate more stable.

[0036] Example 4: The difference between this example and Example 1 is that the electrical control box 17 is connected to the cooling bed 1 via a fixing plate.

[0037] This allows the electrical control box 17 to be installed more stably on the cooling bed 1.

[0038] In this embodiment, traditional production either relies on manual tailing, which is not only labor-intensive and has a low accuracy rate, but also poses safety hazards on site, or there are no effective tailing measures, resulting in a large number of qualified steel bars being cut and wasted, which greatly reduces the yield.

[0039] In summary, in practical use, several roller conveyor baffles 2 are evenly arranged on the top side of the cooling bed 1. These roller conveyor baffles 2 can form a baffle roller conveyor for steel reinforcement support. The system also includes a basic positioning component, a precise counting and identification component, a pneumatic tail-lifting execution component, and an electrical control component. The specific implementation parameters, assembly, and operation steps of each component are as follows:

[0040] 1. Assembly of basic positioning components: First, the original alignment baffle rollers of the cooling bed 1 need to be removed. Weld rollers made of scrap high-chromium wear-resistant steel plates to reinforce the base plate 3 and improve the stability of the base. Weld a 7cm high wear-resistant steel plate tail baffle 4 20cm behind the original alignment baffle to form a stepped positioning structure. Drill holes precisely on the base plate 3 according to the cylinder size and reserve the cylinder installation and fixing hole positions.

[0041] 2: Installation of pneumatic tail lifting actuator: Select a small cylinder 7 that is compatible with the space of the cooling bed 1, fix the small cylinder 7 in the reserved hole 5 of the reinforced base plate, adjust the cylinder lifting height to 10cm to ensure that the steel bar can be steadily lifted to the tail lifting baffle 4 step, install the pneumatic reversing solenoid valve 9 on the side of the roller conveyor, connect the small cylinder 7 to the compressed air pipeline in the plant area through the high pressure air pipe 10, and adjust the on and off air control of the solenoid valve to ensure smooth cylinder extension and retraction.

[0042] 3: Installation of the precision counting and identification component: Install a seesaw-type wear-resistant alloy steel counting rod 11 at the moving tooth 12m away from the end of the alignment roller conveyor; fix a high-temperature resistant support frame 12 below the counting rod 11, adjust the distance between the switch and the counting rod 11 to ensure that the signal can be accurately collected when the steel bar passes over the counting rod 11; connect the proximity switch and the signal converter 18 of the electrical control component through the shielded wire 16 to avoid signal interference.

[0043] 4. Assembly and Program Debugging of Electrical Control Components: Assemble the PLC controller, touch screen, signal converter, and relays into an electrical control box 17, and install it in the operating cabinet next to the counting rod 11; connect the proximity switch and pneumatic reversing solenoid valve to the control box to complete the circuit wiring; write the optimized counting control program into the PLC controller to realize the linkage of multiple length setting, empty step calculation, signal acquisition, and action command; preset the multiple length parameters of steel bars of specifications such as φ22, φ25, φ28, φ32, and φ36 on the touch screen to complete the program debugging.

[0044] 5. Overall Debugging and Production Use: Start the cooling bed and tail-picking device to simulate the conveying process of steel bars of different specifications, and test the signal acquisition accuracy of the counting device and the precision of the tail-picking action of the cylinder; verify the empty step deduction function of the program for the empty step situation between steel bar multiples to ensure that the tail picking is error-free; after debugging, put the device into production. When rolling steel bars of φ22 and above, the tail picking device can be activated, and the device can be turned off when rolling small-specification steel bars to achieve on-demand use; in daily use, simply select the corresponding parameters on the touch screen according to the steel bar specification, and the device can achieve fully automatic tail picking.

[0045] This invention solves the industry pain point of tail picking in bar rolling cold bed by combining mechanical positioning, precise counting, pneumatic execution, and program optimization. It realizes automatic and precise separation of defective tails, reduces cold shearing losses from the root cause, significantly improves the yield, reduces labor costs and operational risks, and enhances the automation level of bar rolling production. It is suitable for actual on-site production conditions and has strong practicality and scalability.

Claims

1. An automatic tail-picking device for a bar rolling mill cooling bed, characterized in that: The assembly includes a basic positioning component, a precise counting and identification component, a pneumatic tail-picking execution component, an electrical control component, and a cooling bed (1). The basic positioning component includes a base plate (3) and a tail-picking baffle (4). The precise counting and identification component includes a pneumatic reversing solenoid valve (9) and an electrical control box (17). The pneumatic tail-picking execution component includes a lifting support plate (6) and a small cylinder (7). The electrical control component includes an electrical control box (17). Several roller conveyor baffles (2) are evenly arranged on the cooling bed (1). A base plate (3) is provided at the end of the cooling bed (1). A tail-picking baffle (4) is provided at the top of the base plate (3). A reserved hole (5) is provided in the middle of the side of the tail-picking baffle (4). A small cylinder (7) is installed in the reserved hole (5).

2. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 1, characterized in that: The top side of the base plate (3) is provided with a lifting support plate (6), and the driving end of the small cylinder (7) is connected to the lifting support plate (6) through a push connecting rod (8).

3. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 1, characterized in that: A pneumatic reversing solenoid valve (9) is provided on the side of the roller conveyor baffle (2). The pneumatic reversing solenoid valve (9) is connected to the small cylinder (7) through an air supply connection pipe. A high-pressure air pipe (10) is connected to the side of the pneumatic reversing solenoid valve (9).

4. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 1, characterized in that: A counting rod (11) is provided in the middle of the side of the roller conveyor baffle (2). A support frame (12) is provided on the bottom side of the counting rod (11). Two rotating connecting rods (13) are symmetrically rotatably arranged on the support frame (12). The ends of the rotating connecting rods (13) are rotatably connected to the side of the counting rod (11). A return spring (14) is sleeved on the rotating connecting rod (13). One end of the return spring (14) is connected to the counting rod (11), and the other end of the return spring (14) is connected to the support frame (12).

5. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 4, characterized in that: A proximity switch (15) is provided on the bottom side of the counting rod (11), and a shielding wire (16) is connected to the proximity switch (15).

6. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 5, characterized in that: An electrical control box (17) is provided on the side of the cooling bed (1), and a signal converter (18) is provided on the top of the electrical control box (17). The end of the shielded wire (16) is connected to the signal converter (18).

7. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 1, characterized in that: The longitudinal section of the tail baffle (4) is stepped.

8. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 1, characterized in that: The top surface of the lifting support plate (6) has several anti-slip patterns.

9. The automatic tail-picking device for a bar rolling mill cooling bed according to claim 6, characterized in that: The electrical control box (17) is connected to the cooling bed (1) via a fixing plate.

Images