High-precision high-speed cut-to-length machine

Abstract

The utility model relates to the field of cut-off machines, in particular to a high-precision and high-speed fixed-length cut-off machine which comprises a hydraulic system and a fixed-length cut-off machine body, and the fixed-length cut-off machine body comprises an inlet guide, a speed measuring device, a hydraulic shear, an outlet guide, a discharging clamping and conveying device, a material head collecting trolley, a lathe bed, a high-frequency-response electromagnetic valve and a servo power device. The speed measuring device comprises an air cylinder, a frame assembly, an upper movable wheel assembly, a lower movable wheel assembly and a spring. The hydraulic shear comprises a high-frequency response electromagnetic valve, a cylinder body assembly, a guide pin, an annular shear, a piston, a displacement sensor, a sliding block and a rack; in the cut-to-length process of the bar, the hydraulic shear follows the bar according to the set speed and the required cut-to-length length, synchronously completes shearing and returns, cut-to-length cutting is completed in cycles, and the cut-to-length cutting precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machines, in particular to a high-precision and high-speed fixed-length cutting machine. Background Art

[0002] In coil-to-bar or bar-to-bar production lines, it is suitable for cutting rods and wires to a fixed length. Currently, in coil-to-coil or bar-to-bar production lines, flying shears or fixed-length cutting are used to cut rods and wires. However, due to the high production speed of rods and wires, the fixed-length accuracy of rods and wires is not enough to meet customer requirements. The only option is to reduce the speed of rods and wires, affecting the efficiency of equipment use.

[0003] Therefore, in order to solve the problem of insufficient length accuracy of the above-mentioned existing cutting machines, a high-precision and high-speed length-cutting machine can be designed. During the length-cutting process of the bar, the hydraulic shear 203 follows the bar according to the set speed and the required length, and synchronously completes the shearing and returns, completing the length cutting over and over again, with high length cutting accuracy. Utility Model Content

[0004] In order to overcome the problem of insufficient sizing accuracy of existing cutting machines.

[0005] The technical solution of the utility model is: a high-precision and high-speed cut-to-length machine, including a hydraulic system and a cut-to-length machine body, the cut-to-length machine body including an inlet guide, a speed measuring device, a hydraulic shear, an outlet guide, a material discharging clamping device, a material head collecting trolley, a bed, a high-frequency response electromagnetic valve and a servo power device;

[0006] During the bar cutting process, the hydraulic shear follows the bar, cuts synchronously and returns according to the set speed and required fixed length, and completes the cutting process repeatedly with high cutting accuracy.

[0007] The speed measuring device includes a cylinder, a frame assembly, an upper movable wheel assembly, a lower movable wheel assembly and a spring;

[0008] The hydraulic shear includes a high-frequency response solenoid valve, a cylinder assembly, a guide pin, a ring shear, a piston, a displacement sensor, a slide block and a rack.

[0009] Preferably, a linear guide rail is provided at the outer end of the fixed-length cutting machine body, and the inlet guide and speed measuring device are located on one side of the front end of the fixed-length cutting machine body, which are used to guide the bar material into the hydraulic shear and play a certain safety protection role; nylon material is provided inside to prevent scratches on the surface of the bar material. The hydraulic shear is a cylinder structure, and a ring shear is installed on the piston rod for shearing the bar material. The inlet guide and the outlet guide have the same structure.

[0010] Preferably, the outlet guide and the material discharging clamping device are both located on the rear side of the fixed-length cutting machine body, and the material head collecting trolley is located on one side of the bottom surface of the fixed-length cutting machine body, which is used to collect the material head and the tail of the material that is not enough to the fixed length when starting shearing; the material head collecting trolley can be pulled out from the inside of the bed, the servo power unit is a high-torque and low-inertia servo motor, the reducer is a precision planetary reducer, the front end of the reducer is provided with a helical gear, and the servo motor is provided with an absolute encoder for measuring the speed and position of the hydraulic shear.

[0011] Preferably, the high-frequency response solenoid valve is located at the upper end of the cylinder assembly, and the annular shear includes a movable annular shear and a fixed annular shear. The movable annular shear is located at one end of the piston, and the fixed annular shear is located at one end of the cylinder assembly. The piston drives the movable annular shear to move to achieve cutting of the rod material.

[0012] Preferably, the displacement sensor is located at the top of the cylinder assembly to detect the movement position of the piston. The slider is located at the bottom of the cylinder assembly and moves on the bed guide rail. The rack is a helical rack located at the bottom of the cylinder assembly and moves along the linear guide rail under the drive of the servo power device.

[0013] Preferably, the cylinder is located on the panel of the frame assembly to provide lifting power for the upper movable wheel. The frame assembly is a combined structure, which is composed of columns, upper and lower panels and screws. The columns provide guidance for the movable wheel assembly.

[0014] Preferably, the upper movable wheel is composed of a movable wheel, a guide, and an incremental encoder. The movable wheel is made of high-strength, low-density material to reduce the inertia of the movable wheel movement, and the roller surface is knurled to increase friction. The encoder is used to detect the real-time speed of the bar. The lower movable wheel assembly is composed of a movable wheel, a guide, and a spring. The spring and the cylinder cooperate to provide appropriate contact force for the upper and lower movable wheels and the bar.

[0015] Beneficial effects of the utility model:

[0016] During the bar cutting process, the hydraulic shear follows the bar, cuts synchronously and returns according to the set speed and required fixed length, and completes the fixed length cutting over and over again with high cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 What is shown is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 Shown are schematic diagrams of the front and side views of the fixed-length cutting machine body of the utility model;

[0019] Figure 3 Shown is a side view schematic diagram of the hydraulic shears of the present invention;

[0020] Figure 4 What is shown is a schematic diagram of the front view structure of the speed measuring device of the present invention.

[0021] Explanation of the accompanying symbols: 1. Hydraulic system; 2. Cut-to-length cutting machine body; 201. Inlet guide; 202. Speed ​​measuring device; 203. Hydraulic shear; 204. Outlet guide; 205. Discharge clamping device; 206. Material head collecting trolley; 207. Bed; 208. High-frequency response solenoid valve; 209. Servo power device; 2032. Cylinder assembly; 2033. Guide pin; 2034. Annular shear; 2035. Piston; 2036. Displacement sensor; 2037. Slider; 2038. Rack; 2021. Cylinder; 2022. Frame assembly; 2023. Upper movable wheel assembly; 2024. Lower movable wheel assembly; 2025. Spring. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figures 1-4The utility model provides a technical solution: a high-precision and high-speed cut-to-length machine, including a hydraulic system 1 and a cut-to-length machine body 2, the cut-to-length machine body 2 includes an inlet guide 201, a speed measuring device 202, a hydraulic shear 203, an outlet guide 204, a material discharging clamping device 205, a material head collecting trolley 206, a bed 207, a high-frequency response solenoid valve 208 and a servo power device 209, a linear guide rail is provided at the outer end of the cut-to-length machine body 2, the inlet guide 201 and the speed measuring device 202 are located on the cut-to-length machine body 2, a speed measuring device 202 is arranged on the front side of the bed 207, and an incremental encoder is installed on the driven wheel to detect the speed of the bar material. The inlet guide 201 is arranged on the front side of the bed 207, located on both sides of the speed measuring device 202, and is used to guide the bar material into the hydraulic shear, while playing a certain safety protection role; nylon material is provided inside to prevent the surface of the bar material from being scratched. The hydraulic shear 203 is a cylinder structure, and a ring shear is installed on the piston rod for shearing the bar material; a high-frequency response electromagnetic valve 208 is installed on the cylinder body; the cylinder body A helical rack is provided on the top, and the entire cylinder body is installed on the linear guide rail of the bed; driven by the servo power device, it moves back and forth along the linear guide rail, the inlet guide 201 and the outlet guide 204 have the same structure, the outlet guide 204 and the discharge clamping device 205 are both located on the rear side of the fixed-length cutting machine body 2, the discharge clamping device 205 is used to throw the bar material out of the fixed-length cutting machine, the material head collection trolley 206 is located on one side of the bottom surface of the fixed-length cutting machine body 2, and the material head collection trolley 206 is placed on the lower side of the bed 207 to collect the material when starting shearing. The head and tail are not enough to form a fixed length of material; the material collection trolley 206 can be pulled out from the inside of the bed. The servo power unit 209 adopts a high-torque and low-inertia servo motor, and the reducer uses a precision planetary reducer. The front end of the reducer is provided with a helical gear. The servo motor is equipped with an absolute encoder for measuring the speed and position of the hydraulic shear. The cutting machine consists of a speed measuring device 202, a bed 207, a hydraulic shear 203, a servo power unit 209, a material discharging and clamping device 205 and a guide device, a hydraulic system 1, and a dedicated electrical control system.

[0024] See also Figure 4In this embodiment, the speed measuring device 202 includes a cylinder 2021, a frame assembly 2022, an upper movable wheel assembly 2023, a lower movable wheel assembly 2024 and a spring 2025. The cylinder 2021 is located on the panel of the frame assembly 2022 and provides power for the upper movable wheel to rise and fall. The frame assembly 2022 is a combined structure. The frame assembly 2022 is held together by a column, an upper and lower panel and screws. The column provides a guide for the movable wheel assembly. The upper movable wheel assembly 2023 is composed of a movable wheel, a guide, and an incremental encoder. The movable wheel is made of high-strength, low-density material to reduce the inertia of the movable wheel movement, and the roller surface is knurled to increase friction. The encoder is used to detect the real-time speed of the bar material. The lower movable wheel assembly 2024 is composed of a movable wheel, a guide, and a spring. The spring and the cylinder cooperate to provide appropriate contact force between the upper and lower movable wheels and the bar material. The speed measuring device 202 adopts a low-inertia clamping wheel and a cylinder clamping mechanism. The clamping wheel is provided with a high-precision encoder for detecting the speed of the bar wire.

[0025] See also Figure 3 In this embodiment, the hydraulic shear 203 includes a high-frequency response solenoid valve 208, a cylinder assembly 2032, a guide pin 2033, an annular shear 2034, a piston 2035, a displacement sensor 2036, a slider 2037 and a rack 2038. The high-frequency response solenoid valve 208 is located at the upper end of the cylinder assembly 2032. The guide pin 2033 is installed on the cylinder to prevent the piston from rotating during shearing. The annular shear 2034 includes a movable annular shear and a fixed annular shear. The movable annular shear is located at one end of the piston 2035, and the fixed annular shear is located at one end of the cylinder assembly 2032. The piston 2035 drives the movable annular shear to move to achieve cutting of the bar material. Sensor 2036 is located at the top of the cylinder assembly 2032, and the displacement sensor 2036 is installed on the cylinder head of the cylinder assembly to detect the movement position of the piston. The slider 2037 is located at the bottom of the cylinder assembly 2032 and moves on the bed guide rail. The rack 2038 has helical teeth and is located at the bottom of the cylinder assembly 2032. Driven by the servo power device, it moves along the linear guide rail. The hydraulic shear 203 adopts a piston cylinder, and a ring scissors is installed on the piston 2035. A built-in linear displacement sensor is provided on the cylinder assembly 2032 to detect the real-time position of the scissors; a high-frequency response solenoid valve 208 is installed on the hydraulic cylinder.

[0026] When working, turn on the power. The cutting machine consists of a speed measuring device 202, a bed 207, a hydraulic shear 203, a servo power device 209, a material discharging clamping device 205 and a guide device, a hydraulic system 1, and a dedicated electrical control system. The speed measuring device 202 adopts a low-inertia clamping wheel and a cylinder clamping mechanism. The clamping wheel is provided with a high-precision encoder for detecting the speed of the rod and wire. The hydraulic shear 203 adopts a piston cylinder, and a ring shear 2034 is installed on the piston rod. The cylinder assembly 2032 is provided with a built-in linear displacement sensor 2036 for detecting the real-time position of the shears; a high-frequency response solenoid valve 203 is provided. 8 is installed on the hydraulic cylinder, and the servo power unit 209 uses a large-torque and low-inertia servo motor to drive the hydraulic shear 203 to move through the helical gear rack; a position encoder is provided on the servo motor, and the position encoder and the speed measuring device 202 are used in conjunction to control the speed and position of the hydraulic shear 203. The discharge clamping device 205 is fixed on the rear side of the bed 207, and is used to throw the cut bar material out of the cutting device. The hydraulic shear 203 is provided with inlet and outlet guide devices at the front and rear to guide the bar material. The electrical control system adopts a dedicated PID software control module and hardware control module for the fixed-length precision control of the hydraulic shear 203.

[0027] Through the above steps, during the bar cutting process, the hydraulic shear 203 follows the bar, synchronously completes the shearing and returns according to the set speed and the required fixed length, and completes the fixed length cutting over and over again. The fixed length cutting has high precision and solves the problem.

Claims

1. A high-precision, high-speed cut-to-length machine, comprising a hydraulic system (1) and a cut-to-length machine body (2); characterized in that: The cut-to-length cutting machine body (2) includes an inlet guide (201), a speed measuring device (202), a hydraulic shear (203), an outlet guide (204), a material discharging clamping device (205), a material head collecting trolley (206), a bed (207), a high-frequency response electromagnetic valve (208) and a servo power device (209); The speed measuring device (202) includes a cylinder (2021), a frame assembly (2022), an upper movable wheel assembly (2023), a lower movable wheel assembly (2024) and a spring (2025); The hydraulic shear (203) includes a high-frequency response electromagnetic valve (208), a cylinder assembly (2032), a guide pin (2033), an annular shear (2034), a piston (2035), a displacement sensor (2036), a slider (2037) and a rack (2038).

2. The high-precision, high-speed cut-to-length machine according to claim 1, characterized in that: A linear guide rail is provided at the outer end of the cut-to-length cutting machine body (2); an inlet guide (201) and a speed measuring device (202) are located on one side of the front end of the cut-to-length cutting machine body (2); a hydraulic shear (203) is a cylinder structure; and the inlet guide (201) and the outlet guide (204) have the same structure.

3. The high-precision, high-speed cut-to-length machine according to claim 1, characterized in that: The outlet guide (204) and the material discharging clamping device (205) are both located at the rear side of the fixed-length cutting machine body (2), the material head collecting trolley (206) is located at one side of the bottom surface of the fixed-length cutting machine body (2), and the servo power device (209) is a high-torque and low-inertia servo motor.

4. The high-precision, high-speed cut-to-length machine according to claim 1, characterized in that: The high-frequency response solenoid valve (208) is located at the upper end of the cylinder assembly (2032). The annular shear (2034) includes a movable annular shear and a fixed annular shear. The movable annular shear is located at one end of the piston (2035), and the fixed annular shear is located at one end of the cylinder assembly (2032).

5. The high-precision, high-speed cut-to-length machine according to claim 1, characterized in that: The displacement sensor (2036) is located at the top of the cylinder assembly (2032), the slider (2037) is located at the bottom of the cylinder assembly (2032), the rack (2038) is a helical tooth, and the rack (2038) is located at the bottom of the cylinder assembly (2032).

6. The high-precision and high-speed cut-to-length machine according to claim 1, characterized in that: The cylinder (2021) is located on a panel of a frame assembly (2022). The frame assembly (2022) is a combined structure, and the frame assembly (2022) is assembled together by columns, upper and lower panels and screws.

7. The high-precision and high-speed cut-to-length machine according to claim 1, characterized in that: The upper movable wheel component (2023) is composed of a movable wheel, a guide, and an incremental encoder, and the lower movable wheel assembly (2024) is composed of a movable wheel, a guide, and a spring.

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