Fixed-length cutting device for PC steel bar

Abstract

The invention discloses a fixed-length cutting device for a PC steel bar, and relates to the technical field of PC steel bar machining, the fixed-length cutting device comprises a machining table, a frame and a cutting mechanism, and further comprises two driving mechanisms which are arranged at the top of the machining table through grooves respectively and used for driving the PC steel bar to move in a fixed-length mode, the driving mechanism comprises a shell, a lead screw assembly arranged in the shell, electric push rods fixed to the front side and the rear side of the inner wall of the shell, and brake pads fixed to the output ends of the electric push rods through arc-shaped plates. The displacement sensor is used for measuring the moving distance of the steel bar, the electric push rod and the brake pad are used for conveniently controlling operation of the driving mechanism, the cutting length of the steel bar can be automatically and accurately controlled, repeated manual operation is not needed during fixed-length cutting, time and labor are saved, double-station machining is achieved, and the machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PC steel bar processing, and specifically relates to a fixed-length cutting device for PC steel bars. Background Art

[0002] Steel bars for prestressed concrete, abbreviated as PC steel bars, are a type of steel bars used in prestressed concrete structures. Their main function is to bear prestress to enhance the tensile and bending resistance of concrete structures. They are widely used in prestressed components such as high-strength prestressed concrete centrifugal pipe piles, electric poles, and elevated bridge piers. During the processing of PC steel bars, it is necessary to cut them into different lengths to meet the requirements of the project.

[0003] Referring to a PC steel bar fixed-length cutting device with the patent application number CN202420515307.4, this prior art introduces an elastic clamping mechanism, enabling the PC steel bar to be firmly clamped during the cutting process and eliminating the need for frequent fixture adjustments, greatly improving the operation convenience and efficiency. Secondly, the design of a fixed-length baffle and a limit mechanism is adopted, which can accurately control the cutting length, avoiding the problem of cutting direction deviation existing in the sliding connection of traditional steel bar cutting machines and improving the cutting accuracy and stability.

[0004] However, during the use of the above patent, it is necessary to manually adjust the position of the fixed-length baffle and fix it by tightening bolts. During fixed-length cutting, manual operations need to be repeated, which consumes a long time, and manual operations are prone to errors, reducing the processing efficiency and accuracy. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a fixed-length cutting device for PC steel bars, which solves the problems that manual operations need to be repeated during fixed-length cutting, consuming a long time, and manual operations are prone to errors, reducing the processing efficiency and accuracy.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A fixed-length cutting device for PC steel bars, including a processing table, a frame, and a cutting mechanism, further includes:

[0007] Two driving mechanisms, both of which are respectively arranged on the top of the processing table through grooves, used to drive the PC steel bar to move at a fixed length. The driving mechanism includes a housing, a lead screw assembly arranged inside the housing, electric push rods fixed on the front and rear inner walls of the housing, and brake pads fixed on the output ends of the electric push rods through arc-shaped plates;

[0008] Two displacement sensors, respectively arranged on both sides of the inner wall of the frame, used to measure the moving distance of the PC steel bar.

[0009] Preferably, the lead screw assembly includes a servo motor, the output end of the servo motor is fixedly connected with a threaded rod, the surface of the threaded rod is threadedly connected with a movable block, and the top of the movable block is fixedly connected with a vertical plate penetrating above the housing.

[0010] Preferably, a sleeve plate is fixedly connected to the top of the vertical plate, and a first clamp is arranged inside the sleeve plate. A bracket is fixedly arranged on one side of the top of the processing table, and a second clamp is arranged inside the bracket.

[0011] Preferably, both the first clamp and the second clamp include a cylinder, the output end of the cylinder is fixedly connected with a clamping plate, and a rubber pad is bonded to the inner wall of the clamping plate.

[0012] Preferably, both sides of the bottom of the processing table are fixedly connected with support frames. A hydraulic cylinder is fixedly connected to the top of the frame. A sliding plate is slidably arranged between the two sides of the inner wall of the frame. The output end of the hydraulic cylinder is fixedly connected with the top of the sliding plate. An electric slide rail is arranged at the bottom of the sliding plate, and the cutting mechanism is arranged at the bottom of the electric slide rail.

[0013] Preferably, the cutting mechanism includes a driving motor fixed to the bottom of the electric slide rail through a support plate, and the output end of the driving motor is fixedly connected with a cutting blade.

[0014] Preferably, a blanking groove is formed on one side of the processing table, a collection box is arranged directly below the blanking groove, first inclined plates are fixedly connected to both sides of the inner wall of the blanking groove, a second inclined plate is rotatably arranged on one side of the collection box, a buffer assembly is arranged at the top of the second inclined plate, and a limiting rod is fixedly connected to the inner wall of the collection box and at the bottom of the second inclined plate.

[0015] Preferably, the buffer assembly includes a first spring fixed to the top of the second inclined plate and a support plate fixed to the top of the first spring.

[0016] Preferably, a sponge pad is arranged at the bottom of the inner wall of the collection box, and universal wheels are fixedly connected to the bottom of the collection box.

[0017] Preferably, sleeves are fixedly connected to both sides of the collection box, a second spring is fixedly connected to one side of the inner wall of the sleeve, one end of the second spring is fixedly connected with a telescopic rod penetrating outside the sleeve, and a limiting block for the telescopic rod to pass through is fixedly connected to one side of the processing table.

[0018] The present invention provides a device for fixed-length cutting of PC steel bars, having the following beneficial effects:

[0019] (1) The fixed-length cutting device for PC steel bars fixes the steel bar between the first fixture and the second fixture. The driving mechanism can continuously drive the steel bar to move through the sleeve plate and the first fixture. The displacement sensor measures the moving distance of the steel bar. The electric push rod and the brake pad facilitate the control of the operation of the driving mechanism, can accurately control the cutting length of the steel bar automatically, and do not require manual repeated operation during fixed-length cutting, saving time and effort. Moreover, the double-station processing improves the processing efficiency.

[0020] (2) For the fixed-length cutting device for PC steel bars, after the steel bar is cut, it can enter the collection box through the blanking chute, which facilitates automatic blanking. At the same time, during the blanking process, through the setting of the first inclined plate, the buffer assembly and the second inclined plate, the steel bar falling after cutting can be buffered, reducing the impact force on the steel bar and avoiding workpiece damage.

[0021] (3) For the fixed-length cutting device for PC steel bars, when the collection box is collecting materials, by passing the telescopic rod through the limit block, the position of the collection box can be positioned, improving its stability during material collection. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the structure of the present invention;

[0023] Figure 2 is the present invention Figure 1 a partial enlarged view of part A in;

[0024] Figure 3 is a cross-sectional view of the driving mechanism structure of the present invention;

[0025] Figure 4 is the front view of the structures of the first fixture and the second fixture of the present invention;

[0026] Figure 5 is a cross-sectional view of the collection box structure of the present invention;

[0027] Figure 6 is the present invention Figure 1 a partial enlarged view of part S in;

[0028] Figure 7 is a cross-sectional view of the telescopic rod structure of the present invention.

[0029] In the figure: 1, processing table; 2, frame; 3, cutting mechanism; 31, driving motor; 32, cutting blade; 4, driving mechanism; 41, housing; 42, electric push rod; 43, arc plate; 44, brake pad; 5, displacement sensor; 6, servo motor; 7, threaded rod; 8, movable block; 9, vertical plate; 10, sleeve plate; 11, first clamp; 12, bracket; 13, second clamp; 14, cylinder; 15, clamping plate; 16, rubber pad; 18, hydraulic cylinder; 19, sliding plate; 20, electric slide rail; 21, blanking chute; 22, collection box; 23, first inclined plate; 24, second inclined plate; 25, buffer assembly; 251, first spring; 252, support plate; 26, limiting rod; 27, sponge pad; 28, universal wheel; 29, sleeve; 30, second spring; 31, telescopic rod; 32, limiting block. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1

[0032] Please refer to Figures 1 to 4 As shown, the present invention provides a fixed-length cutting device for PC steel bars, including a processing table 1, a frame 2 fixed on one side of the top of the processing table 1, and a cutting mechanism 3. A hydraulic cylinder 18 is fixedly connected to the top of the frame 2. A sliding plate 19 is slidably arranged between the two sides of the inner wall of the frame 2. The output end of the hydraulic cylinder 18 is fixedly connected to the top of the sliding plate 19. An electric slide rail 20 is arranged at the bottom of the sliding plate 19. The electric slide rail 20 is used to drive the cutting mechanism 3 to reciprocate under the sliding plate 19, facilitating the sequential cutting of steel bars on both sides. The electric slide rail 20 is a prior art, and its specific structure and principle are well known to those in the art and will not be described in detail here. The cutting mechanism 3 is arranged at the bottom of the electric slide rail 20. The cutting mechanism 3 includes a driving motor 31 fixed to the bottom of the electric slide rail 20 through a support plate. The output end of the driving motor 31 is fixedly connected to a cutting blade 32;

[0033] It further includes: two driving mechanisms 4, which are respectively arranged on the top of the processing table 1 through grooves and are used to drive the PC steel bar to move at a fixed length. The driving mechanism 4 includes a housing 41 fixed to the top of the processing table 1. A lead screw assembly is arranged inside the housing 41. The lead screw assembly includes a servo motor 6 fixed to one side of the inner wall of the housing 41. The output end of the servo motor 6 is fixedly connected to a threaded rod 7. A movable block 8 is threadedly connected to the surface of the threaded rod 7. The bottom of the movable block 8 is slidably connected to the bottom of the inner wall of the housing 41. The top of the movable block 8 is fixedly connected to a vertical plate 9 that penetrates above the housing 41;

[0034] Both the front and rear sides of the inner wall of the housing 41 are fixedly connected with electric push rods 42. The electric push rods 42 are DTA-06 micro electric push rods. The output end of the electric push rod 42 is fixedly connected with an arc-shaped plate 43. A brake pad 44 adapted to the threaded rod 7 is fixedly connected to the inner wall of the arc-shaped plate 43;

[0035] Displacement sensors 5 are respectively arranged on both sides of the inner wall of the frame 2 and are used to measure the moving distance of the PC steel bar. The displacement sensors 5 are wirelessly connected to an external control system. The external control system is specifically a computer;

[0036] The top of the vertical plate 9 is fixedly connected with a sleeve plate 10, and a first clamp 11 is arranged inside the sleeve plate 10. A bracket 12 is fixedly arranged on one side of the top of the processing table 1. A second clamp 13 is arranged inside the bracket 12. Both the first clamp 11 and the second clamp 13 include a cylinder 14. The output end of the cylinder 14 is fixedly connected with a clamping plate 15, and a rubber pad 16 is bonded to the inner wall of the clamping plate 15.

[0037] Through the setting of the above structure, the PC steel bar is passed through between the first clamps 11 and the second clamps 13 on both sides. The cylinder 14 of the first clamp 11 is started to drive the clamping plate 15 to fixedly clamp the PC steel bar. At the same time, the servo motor 6 is started to drive the threaded rod 7 to rotate, driving the movable block 8 to move on the threaded rod 7. The movable block 8 drives the clamped PC steel bar to move through the sleeve plate 10 and the first clamp 11. The displacement sensors 5 on both sides respectively detect the moving distance of the double-station steel bar. After reaching the cutting length, the measurement result is transmitted to the external control system. The external control system controls the servo motor 6 to stop working. At the same time, the electric push rod 42 is started to drive the brake pad 44 to approach the threaded rod 7 to brake it and make it stop rotating immediately, accurately controlling the cutting length of the conveying. Then, the hydraulic cylinder 18 is started to drive the cutting blade 32 to move downward. The driving motor 31 drives the cutting blade 32 to rotate to cut the steel bar. The electric slide rail 20 drives the cutting blade 32 to reciprocate, and the PC steel bars on both sides can be cut in sequence. By operating in this way repeatedly, the PC steel bar of a fixed length can be intercepted.

[0038] Embodiment Two

[0039] On the basis of Embodiment 1, please refer to Figure 1 and Figure 5 As shown, the specific improvements are as follows: A blanking groove 21 is provided on one side of the processing table 1, a collection box 22 is arranged directly below the blanking groove 21, both sides of the inner wall of the blanking groove 21 are fixedly connected with first inclined plates 23, one side of the collection box 22 is rotatably connected with a second inclined plate 24, and a buffer assembly 25 is arranged at the top of the second inclined plate 24. The buffer assembly 25 includes a number of first springs 251 fixed to the top of the second inclined plate 24, and a support plate 252 is fixedly connected to the top of the first spring 251;

[0040] A limiting rod 26 is fixedly connected to the inner wall of the collection box 22 and at the bottom of the second inclined plate 24 for supporting the second inclined plate 24. A sponge pad 27 is arranged at the bottom of the inner wall of the collection box 22, and universal wheels 28 are fixedly connected to the bottom of the collection box 22.

[0041] Through the setting of the above structure, the cut PC steel bars fall downward through the blanking groove 21, and the first inclined plate 23 guides the steel bars to slide onto the second inclined plate 24. The setting of the support plate 252 and the first spring 251 will effectively absorb part of the impact energy and slow down the falling speed of the steel bars. After passing through the buffer assembly 25, the steel bars roll onto the sponge pad 27 of the collection box 22. The above setting can reduce the impact force on the steel bars and avoid damage to the workpieces. Through the setting of the universal wheels 28, the collection box 22 can be flexibly moved, and the second inclined plate 24 can rotate outward from the collection box 22 without affecting the subsequent blanking of the collection box 22.

[0042] Embodiment 3

[0043] Combining Embodiment 1 and Embodiment 2, please refer to Figure 1 , Figure 6 and Figure 7 As shown, the specific improvements are as follows: Sleeves 29 are fixedly connected to both sides of the collection box 22, and a second spring 30 is fixedly connected to one side of the inner wall of the sleeve 29. One end of the second spring 30 is fixedly connected to a telescopic rod 31 that penetrates to the outside of the sleeve 29. The end of the telescopic rod 31 that penetrates to the outside of the sleeve 29 is provided with a convex block for facilitating the movement of the telescopic rod 31. A limiting block 32 for the telescopic rod 31 to pass through is fixedly connected to one side of the processing table 1.

[0044] Through the setting of the above structure, when the collection box 22 is collecting materials, it moves to directly below the blanking groove 21. Under the elastic force of the second spring 30, the telescopic rod 31 passes through the limiting block 32, and the position of the collection box 22 can be positioned, improving its stability during material collection.

[0045] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art, and each electrical appliance is connected to an external power supply through a wire.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can 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 fixed-length cutting device for PC steel bars, comprising a processing table (1), a frame (2) and a cutting mechanism (3), characterized in that: It also includes: Two driving mechanisms (4), which are respectively arranged on the top of the processing table (1) through grooves and are used to drive the PC steel bar to move at a fixed length. The driving mechanism (4) includes a housing (41), a lead screw assembly arranged inside the housing (41), electric push rods (42) fixed on the front and rear sides of the inner wall of the housing (41), and a brake pad (44) fixed on the output end of the electric push rod (42) through an arc-shaped plate (43); Two displacement sensors (5), which are respectively arranged on both sides of the inner wall of the frame (2) and are used to measure the moving distance of the PC steel bar.

2. The fixed-length cutting device for PC steel bars according to claim 1, wherein: The lead screw assembly includes a servo motor (6). The output end of the servo motor (6) is fixedly connected with a threaded rod (7). The surface of the threaded rod (7) is threadedly connected with a movable block (8). The top of the movable block (8) is fixedly connected with a vertical plate (9) that penetrates above the housing (41).

3. The fixed-length cutting device for PC steel bars according to claim 2, wherein: The top of the vertical plate (9) is fixedly connected with a sleeve plate (10), and a first clamp (11) is arranged inside the sleeve plate (10). A bracket (12) is fixedly arranged on one side of the top of the processing table (1), and a second clamp (13) is arranged inside the bracket (12).

4. The fixed-length cutting device for PC steel bars according to claim 3, characterized in that: Both the first clamp (11) and the second clamp (13) include a cylinder (14). The output end of the cylinder (14) is fixedly connected with a clamping plate (15), and a rubber pad (16) is bonded to the inner wall of the clamping plate (15).

5. A fixed-length cutting device for PC steel bars according to claim 1, characterized in that: A hydraulic cylinder (18) is fixedly connected to the top of the frame (2). A sliding plate (19) is slidably arranged between both sides of the inner wall of the frame (2). An electric slide rail (20) is arranged at the bottom of the sliding plate (19). The cutting mechanism (3) is arranged at the bottom of the electric slide rail (20).

6. The fixed-length cutting device for PC steel bars according to claim 5, wherein: The cutting mechanism (3) includes a driving motor (31) fixed to the bottom of the electric slide rail (20) through a support plate. The output end of the driving motor (31) is fixedly connected with a cutting blade (32).

7. The fixed-length cutting device for PC steel bars according to claim 1, characterized in that: A blanking groove (21) is formed on one side of the processing table (1). A collection box (22) is arranged directly below the blanking groove (21). First inclined plates (23) are fixedly connected to both sides of the inner wall of the blanking groove (21). A second inclined plate (24) is rotatably arranged on one side of the collection box (22), and a buffer assembly (25) is arranged at the top of the second inclined plate (24). A limiting rod (26) is fixedly connected to the inner wall of the collection box (22) and at the bottom of the second inclined plate (24).

8. The fixed-length cutting device for PC steel bars according to claim 7, characterized in that: The buffer assembly (25) includes a first spring (251) fixed to the top of the second inclined plate (24) and a support plate (252) fixed to the top of the first spring (251).

9. The fixed-length cutting device for PC steel bars according to claim 7, characterized in that: A sponge pad (27) is arranged at the bottom of the inner wall of the collection box (22). Universal wheels (28) are fixedly connected to the bottom of the collection box (22).

10. A fixed-length cutting device for PC steel bars according to claim 7, characterized in that: Both sides of the collection box (22) are fixedly connected with sleeves (29), and one side of the inner wall of the sleeve (29) is fixedly connected with a second spring (30). One end of the second spring (30) is fixedly connected with a telescopic rod (31) that penetrates to the outside of the sleeve (29). One side of the processing table (1) is fixedly connected with a limiting block (32) for the telescopic rod (31) to pass through.

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