A burr removing device for PC steel bar production

Abstract

The utility model relates to PC production technical field especially a burr removing device for PC steel bar production, the utility model discloses a work table, the placing mechanism, a pair of fixed mechanism, suction mechanism and polishing mechanism, each fixed mechanism includes the mounting plate fixedly set on the upper surface one side of work table, the first linear driver rotatable on the inboard surface of mounting plate, the fixed assembly of fixedly being set in the telescopic end of first linear driver and being equipped with cavity and the drive motor fixedly set on the outside of mounting plate, the fixed assembly inner surface is passed through and is equipped with a plurality of adsorption holes of cavity communication, the suction mechanism includes the suction machine fixedly set on the upper surface one side of work table, the first communication pipe of suction machine communication, the second communication pipe of two fixed assembly cavity communication respectively and the three -way valve between first communication pipe and two second communication pipes. This device eliminates PC steel bar surface burr residue as far as possible, guarantees its use performance.

Description

Technical Field

[0001] This utility model relates to the field of PC production technology, and in particular to a burr removal device for PC steel bar production. Background Technology

[0002] PC steel bars, as the core material of high-strength prestressed components, possess advantages such as high strength and toughness, low relaxation, strong bond with concrete, and good weldability and forging properties. They are widely used in prestressed concrete centrifugal pipe piles, utility poles, viaduct piers, railway sleepers, and other engineering components. During the processing of PC steel bars, burrs are easily generated on their surface; if not thoroughly removed, these burrs will directly affect the quality of the components.

[0003] Existing PC steel bar deburring devices generally adopt a "rigid clamping + local grinding" working mode: first, the PC steel bar is mechanically clamped and fixed by a clamp, and then a grinding mechanism is used to grind the burrs on the exposed areas. However, this mode has a significant drawback: the clamping area of ​​the rigid clamp and the area around the clamping point will form a "grinding blind zone," making it impossible to effectively treat the burrs in these areas, resulting in residual defects on the surface of the PC steel bar. These residual defects will cause stress concentration, accelerate corrosion, and thus cause a decline in the mechanical properties and durability failure of the PC steel bar, ultimately creating safety hazards for subsequent prestressed component construction. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a burr removal device for PC steel bar production, which minimizes burr residue on the surface of PC steel bars and ensures their performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A burr removal device for PC steel bar production includes a worktable, a placement mechanism positioned above the worktable for positioning the PC steel bar, a pair of fixing mechanisms slidably disposed on the left and right sides of the placement mechanism for fixing the PC steel bar, a suction mechanism disposed on the worktable and connected at both ends to the two fixing mechanisms, and a grinding mechanism disposed above the worktable for grinding the PC steel bar. Each fixing mechanism includes a mounting plate vertically fixed to one side of the upper surface of the worktable, a first linear actuator rotatably mounted on the inner side of the mounting plate, a fixing component fixed to the telescopic end of the first linear actuator and having an internal cavity, and a drive motor fixed to the outer side of the mounting plate and having its drive end passing through the mounting plate and fixedly connected to the fixing end of the first linear actuator. The inner surface of the fixing component has several suction holes communicating with the cavity. The suction mechanism includes a suction machine fixed to one side of the upper surface of the worktable, a first connecting pipe communicating with the suction machine, second connecting pipes communicating with the internal cavities of the two fixing components, and a three-way valve disposed between the first connecting pipe and the two second connecting pipes.

[0007] More preferably, the fixing assembly includes a chassis fixed to the telescopic end of the first linear actuator, a support rod fixed to the inner side of the chassis, a housing fixed to the support rod on the inner side and covering the chassis, and a sealing ring rotatably disposed between the chassis and the housing; the cavity is formed by the chassis, the sealing ring and the housing; a plurality of adsorption holes are opened on the housing, and the second connecting pipe extends into the cavity after passing through the sealing ring on the corresponding side.

[0008] More preferably, the polishing mechanism includes a second linear actuator vertically fixed to one side of the upper surface of the worktable, a mounting base vertically fixed to the telescopic end of the second linear actuator and located above the placement mechanism, and a polishing roller detachably installed in the mounting base.

[0009] More preferably, the placement mechanism includes a third linear actuator vertically fixed to the middle of the upper surface of the workbench and a placement platform horizontally fixed to the telescopic end of the third linear actuator; an arc-shaped groove is horizontally opened through the upper surface of the placement platform.

[0010] More preferably, each fixing component has a wear-resistant ring fixed on its inner surface, the inner surface of which abuts against the PC steel rod.

[0011] This utility model has the following beneficial effects:

[0012] This device uses "negative pressure adsorption fixation" instead of traditional rigid clamping. The fixing component only contacts the PC steel rod through its end face, without any side obstruction. In conjunction with the drive motor, the steel rod is rotated, which can achieve 360° all-round grinding of the outer surface of the steel rod. This avoids the "grinding blind spots" of existing devices as much as possible, prevents burr residue, prevents stress concentration and accelerated corrosion caused by defects, ensures the mechanical properties (such as tensile strength and toughness) and durability of the PC steel rod, and reduces potential problems in subsequent construction. Attached Figure Description

[0013] Figure 1 A top view of the deburring device;

[0014] Figure 2 A front view of the deburring device;

[0015] Figure 3 This is a schematic diagram of the cross-section at point AA;

[0016] Figure 4 This is an enlarged view of the structure at point B.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Worktable; 2. Placement mechanism; 21. Third linear actuator; 22. Placement stage; 221. Arc groove; 3. Fixing mechanism; 31. Mounting plate; 32. First linear actuator; 33. Fixing assembly; 331. Cavity; 332. Adsorption hole; 333. Chassis; 334. Support rod; 335. Housing; 336. Sealing ring; 337. Wear-resistant ring; 34. Drive motor; 4. Suction mechanism; 41. Suction machine; 42. First connecting pipe; 43. Second connecting pipe; 44. Three-way valve; 5. Grinding mechanism; 51. Second linear actuator; 52. Mounting base; 53. Grinding roller. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] A burr removal device for PC steel bar production includes a worktable 1, a placement mechanism 2 positioned above the worktable 1 for positioning the PC steel bars, a pair of fixing mechanisms 3 slidably disposed on the left and right sides of the placement mechanism 2 for fixing the PC steel bars, a suction mechanism 4 disposed on the worktable 1 and connected at both ends to the two fixing mechanisms 3, and a grinding mechanism 5 disposed above the worktable 1 for grinding the PC steel bars; each fixing mechanism 3 includes a mounting plate 31 vertically fixed to one side of the upper surface of the worktable 1, a first linear actuator 32 rotatably mounted on the inner side of the mounting plate 31, and a component fixed to the first linear actuator. The fixed assembly 33 with a telescopic end and an internal cavity 331, and the drive motor 34 fixed on the outer side of the mounting plate 31 and whose drive end passes through the mounting plate 31 and is fixedly connected to the fixed end of the first linear driver 32; the fixed assembly 33 has several suction holes 332 through which it communicates with the cavity 331 on its inner surface; the suction mechanism 4 includes a suction machine 41 fixed on one side of the upper surface of the workbench 1, a first connecting pipe 42 communicating with the suction machine 41, a second connecting pipe 43 communicating with the cavities 331 of the two fixed assemblies 33 respectively, and a three-way valve 44 located between the first connecting pipe 42 and the two second connecting pipes 43.

[0021] The "negative pressure adsorption fixation" method replaces the traditional rigid clamping. The fixing component 33 only contacts the PC steel rod through its end face, without any side obstruction. With the help of the drive motor 34, the steel rod is rotated, which can achieve 360° all-round grinding of the outer surface of the steel rod, completely eliminating the "grinding blind spot" of the existing device and avoiding burr residue. The metal debris generated during the grinding process is collected in the dust collection box of the suction machine 41 through the adsorption hole 332, cavity 331, second connecting pipe 43, and first connecting pipe 42 under the negative pressure of the suction machine 41, so as to achieve centralized collection of debris and avoid environmental pollution and debris affecting the grinding quality.

[0022] As a possible implementation of this solution, preferably, the grinding mechanism 5 includes a second linear driver 51 vertically fixed to one side of the upper surface of the worktable 1, a mounting base 52 vertically fixed to the telescopic end of the second linear driver 51 and located above the placement mechanism 2, and a grinding roller 53 detachably installed in the mounting base 52; so as to facilitate the replacement of the grinding roller 53.

[0023] As a possible implementation of this solution, preferably, the fixing component 33 includes a chassis 333 fixed to the telescopic end of the first linear actuator 32, a support rod 334 fixed to the inner side of the chassis 333, a housing 335 whose inner side is fixed to the support rod 334 and covers the chassis 333, and a sealing ring 336 rotatably disposed between the chassis 333 and the housing 335; the cavity 331 is formed by the chassis 333, the sealing ring 336 and the housing 335; a plurality of adsorption holes 332 are opened on the housing 335, and the second connecting pipe 43 extends into the cavity 331 after passing through the sealing ring 336 on the corresponding side.

[0024] As a possible implementation of this solution, preferably, the placement mechanism 2 includes a third linear actuator 21 vertically fixed to the middle of the upper surface of the workbench 1 and a placement platform 22 horizontally fixed to the telescopic end of the third linear actuator 21; the upper surface of the placement platform 22 is provided with an arc-shaped groove 221 horizontally through it; the arc-shaped groove 221 can simply limit the PC steel rod placed on the placement platform 22 to prevent the PC steel rod from rolling off the placement platform 22.

[0025] As a possible implementation of this solution, preferably, each outer shell 335 is fixed with a wear-resistant ring 333 whose inner surface abuts against the PC steel rod; to improve stability during fixing.

[0026] The working principle of this device is as follows:

[0027] Step 1: Replace the appropriate grinding roller 53 according to the diameter of the PC steel bar to be processed; adjust the height of the placement table 22 by the third linear drive 21 so that the axis of the arc groove 221 is aligned with the axis of the two fixed components 33, and place the PC steel bar to be ground horizontally in the arc groove 221 of the placement table 22 to complete the initial positioning.

[0028] Step 2: Start the suction machine 41 and adjust the three-way valve 44 to open one of the second connecting pipes 43; control the first linear actuator 32 on the side where the second connecting pipe 43 is in the connected state to extend and push the fixing component 33 to move towards both ends of the PC steel rod until the wear-resistant ring 333 is in close contact with the end face of the steel rod; at this time, the negative pressure generated by the suction machine 41 enters the cavity 331 of the fixing component 33 through the first connecting pipe 42, the three-way valve 44, and the second connecting pipe 43, and then acts on the end face of the PC steel rod through the adsorption hole 332 to achieve unobstructed adsorption and fixing of the steel rod;

[0029] Step 3: The third linear actuator 21 drives the placement table 22 to descend, starts the drive motor of the grinding roller 53, and makes the grinding roller 53 rotate at high speed; controls the second linear actuator 51 to extend, drives the mounting base 52 and the grinding roller 53 to descend until the grinding roller 53 contacts the outer surface of the PC steel rod, and begins the burr grinding.

[0030] Step 4: Start the drive motor 34 on the side of the fixed PC steel bar, drive the first linear driver 32, the fixing component 33 and the PC steel bar to rotate slowly and synchronously, ensuring that all areas of the outer surface of the steel bar can contact the grinding roller 53, eliminating the grinding blind spot. At the same time, the first linear driver 32 on this side extends and retracts, thereby driving the PC steel bar to move left and right, so as to achieve horizontal grinding of the PC steel bar, and can also grind the non-fixed end of the PC steel bar.

[0031] Step 5: Control the first linear actuator 21 on the fixed side to move the PC steel rod to abut against another fixed component 33. Then, switch the second connecting pipe 43 through the three-way valve 44 to switch the fixed end of the PC steel rod. At this time, the fixed component 33 on the non-fixed end side retracts to its shortest length under the action of the first linear actuator 32 on this side. Then repeat step 4.

[0032] Step 6: After grinding is completed, turn off the grinding roller 53 and the drive motor 34, control the second linear actuator 51 to retract and drive the grinding roller 53 to rise and reset; turn off the suction machine 41, adjust the three-way valve 44 to cut off the negative pressure, control the first linear actuator 32 to retract and drive the fixing component 33 away from the steel rod; finally, remove the ground PC steel rod from the placement table 22 to complete one processing cycle.

[0033] The metal shavings generated during the grinding process are drawn into the dust collection box of the suction machine 41 through the suction hole 332, cavity 331, second connecting pipe 43, and first connecting pipe 42 under the negative pressure of the suction machine 41, so as to achieve centralized collection of shavings and avoid environmental pollution and shavings affecting the grinding quality.

[0034] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A burr removal device for PC steel bar production, characterized in that: It includes a workbench (1), a placement mechanism (2) located above the workbench (1) for positioning the PC steel rod, a pair of fixing mechanisms (3) slidably located on the left and right sides of the placement mechanism (2) for fixing the PC steel rod, a suction mechanism (4) located on the workbench (1) and connected to the two fixing mechanisms (3) at both ends, and a grinding mechanism (5) located above the workbench (1) for grinding the PC steel rod; Each set of fixing mechanisms (3) includes a mounting plate (31) vertically fixed to one side of the upper surface of the workbench (1), a first linear driver (32) rotatably mounted on the inner side of the mounting plate (31), a fixing component (33) fixed to the telescopic end of the first linear driver (32) and having a cavity (331) inside, and a drive motor (34) fixed to the outer side of the mounting plate (31) and whose drive end passes through the mounting plate (31) and is fixedly connected to the fixed end of the first linear driver (32); The inner surface of the fixing component (33) is provided with a plurality of adsorption holes (332) that communicate with the cavity (331); The suction mechanism (4) includes a suction machine (41) fixed on one side of the upper surface of the workbench (1), a first connecting pipe (42) connected to the suction machine (41), a second connecting pipe (43) connected to the cavity (331) of the two fixed components (33) respectively, and a three-way valve (44) located between the first connecting pipe (42) and the two second connecting pipes (43).

2. The burr removal device for PC steel bar production according to claim 1, characterized in that: The fixing component (33) includes a chassis (333) fixed to the telescopic end of the first linear actuator (32), a support rod (334) fixed to the inner side of the chassis (333), a housing (335) fixed to the support rod (334) and covered on the chassis (333), and a sealing ring (336) rotatably disposed between the chassis (333) and the housing (335); the cavity (331) is formed by the chassis (333), the sealing ring (336) and the housing (335); a plurality of adsorption holes (332) are opened on the housing (335), and the second connecting pipe (43) extends into the cavity (331) after passing through the sealing ring (336) on the corresponding side.

3. The burr removal device for PC steel bar production according to claim 1, characterized in that: The grinding mechanism (5) includes a second linear driver (51) vertically fixed to one side of the upper surface of the worktable (1), a mounting base (52) vertically fixed to the telescopic end of the second linear driver (51) and located above the placement mechanism (2), and a grinding roller (53) detachably installed in the mounting base (52).

4. The burr removal device for PC steel bar production according to claim 1, characterized in that: The placement mechanism (2) includes a third linear actuator (21) vertically fixed in the middle of the upper surface of the workbench (1) and a placement platform (22) horizontally fixed in the telescopic end of the third linear actuator (21); an arc-shaped groove (221) is horizontally opened through the upper surface of the placement platform (22).

5. The burr removal device for PC steel bar production according to claim 1, characterized in that: Each housing (335) has a wear-resistant ring (337) fixed on its surface, the inner surface of which abuts against the PC steel rod.

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