CN113695482A - Reinforcing steel bar device and method for straightening reinforcing steel bar in reinforcing steel bar processing - Google Patents
Reinforcing steel bar device and method for straightening reinforcing steel bar in reinforcing steel bar processing Download PDFInfo
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- CN113695482A CN113695482A CN202111187470.XA CN202111187470A CN113695482A CN 113695482 A CN113695482 A CN 113695482A CN 202111187470 A CN202111187470 A CN 202111187470A CN 113695482 A CN113695482 A CN 113695482A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
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Abstract
The invention relates to the technical field of steel bar straightening processing, and discloses a steel bar device and a method for straightening steel bars in steel bar processing, which comprises a straightening machine, wherein a straightening inner box is fixedly arranged at the top end of the front surface of the straightening machine, a first fit groove is arranged on the left side of the inner wall of the straightening inner box, the steel bar device and the method for straightening the steel bars in the steel bar processing are used, an operator sends the steel bars to be straightened into the straightening inner box, then a motor is started, when the steel bars pass through the inner part of the straightening inner box, if the steel bars are in a bent state, rolling beads roll on the surfaces of the steel bars and simultaneously move inwards, so that a moving transverse plate also moves on the inner wall of a square-shaped block and drives a connecting rod to move inwards together, the movement of the connecting rod can transition the movement of a disc, and an impact block can perform primary straightening operation on the steel bars, therefore, the effects of straightening in real time in the process of processing the reinforcing steel bars and improving the production efficiency are achieved.
Description
Technical Field
The invention relates to the technical field of steel bar straightening processing, in particular to a steel bar device and a method for straightening steel bars in steel bar processing.
Background
In our existing life, with the rapid development of the national industry, buildings in cities are gradually increased along with the demand of people like bamboo shoots in the spring after rain, and in building construction, the use of reinforcing steel bars cannot be realized, however, the existing reinforcing steel bar straightening machine has the following defects:
1. straightening cannot be carried out in real time in the processing process, and only straightening operation can be carried out again;
2. repeated straightening operation influences the straightening efficiency of the steel bar, and the production efficiency is low.
In order to solve the problems, a large number of researches and experiments are carried out to provide a reinforcing steel bar device and a reinforcing steel bar method for straightening reinforcing steel bars in reinforcing steel bar processing.
Disclosure of Invention
In order to realize the purposes of straightening in real time in the process of processing the reinforcing steel bar and improving the production efficiency, the invention provides the following technical scheme: the reinforcing steel bar device and the method for straightening the reinforcing steel bar in the processing of the reinforcing steel bar comprise a straightening machine, wherein a straightening inner box is fixedly installed at the top end of the front side of the straightening machine;
the inner wall left side of the straightening inner box is provided with a first conjunction groove, the inner wall of the first conjunction groove is fixedly provided with a trapezoidal cushion block, the inner wall of the straightening inner box is provided with a second conjunction groove, the inner wall of the second conjunction groove is fixedly provided with a hollow square-clip block, the inner wall of the hollow square-clip block is movably connected with a movable transverse plate, the left side and the right side of the bottom end of the hollow square-clip block are fixedly provided with retractors, the bottom end of the movable transverse plate is fixedly provided with a connecting rod, the outer wall of the connecting rod is fixedly provided with a transition disc, the front of the transition disc is provided with a clamping groove, the outer wall of the bottom end of the connecting rod is fixedly provided with a special-shaped extrusion block, the front of the special-shaped extrusion block is fixedly provided with a rotating sleeve, the outer wall of the rotating sleeve is movably connected with a straightening roller, the inner wall of the first conjunction groove is fixedly provided with an electric telescopic rod, and the top end of the electric telescopic rod is fixedly provided with an impact block, the equal fixed mounting in bottom left and right sides of striking piece has the fixture block, the inner wall fixed mounting who agrees with the groove has the restriction dish, the draw-in groove has all been seted up to the top left and right sides of restriction dish, the inner wall fixed mounting of restriction dish has the roll track, the orbital inner wall swing joint that rolls has the roll pearl.
As a further optimization, the bottom end of the front side of the straightening machine is movably connected with four pushing wheels, and an auxiliary block is fixedly mounted on the right side of the front side of the straightening machine, so that the safety in the production process is guaranteed, and the reinforcing steel bar is prevented from being shaken in a mess.
As a further optimization, one end, close to the limiting disc, of the trapezoidal cushion block is fixedly connected with the top end of the electric telescopic rod, so that the installation stability and the extending fluency of the electric telescopic rod are enhanced.
As further optimization, the expansion piece is divided into an outer rod, an inner rod and a compression spring, the diameter of the inner wall of the compression spring is matched with the diameter of the outer wall of the inner rod, so that the expansion piece is convenient to adapt to reinforcing steel bars with different sizes and diameters in the reinforcing steel bar straightening process, and the adaptability of the machine is improved.
As a further optimization, the bottom end of the special-shaped extrusion block is provided with a through groove, the inner wall of the rotating sleeve is fixedly provided with a rotating rod, the movable connection of the straightening roller is ensured, and the generation of friction force is reduced in the operation of straightening the steel bar.
As a further optimization, the front surface of the limiting disc is provided with a communicating groove, the diameter of the inner wall of the communicating groove is three centimeters larger than the outer wall of the top end of the electric telescopic rod, so that the inner wall of the communicating groove can move conveniently when the electric telescopic rod extends and shortens, and the blocking situation is avoided.
As further optimization, the width of the clamping groove is three millimeters wider than that of the clamping block, the depth of the clamping groove is two millimeters deeper than that of the clamping block, and the clamping block and the clamping groove can be conveniently and seamlessly clamped.
The method for straightening the steel bar in the steel bar processing comprises the following steps:
s1, before starting, checking whether hydraulic oil of the hydraulic station, gear oil of the reduction gearbox and the transmission box are fully stored, and before starting the main motor, carrying out corner checking adjustment and hydraulic system working pressure adjustment;
s2, selecting proper straightening blocks and transmission speed according to the diameter of the steel bar to be straightened, wherein the aperture of each straightening block is 2-5 mm larger than the diameter of the steel bar to be straightened;
s3, injecting lubricating oil into each lubricating node, checking the operation condition of the mechanical transmission part, ensuring that the mechanical transmission part is flexible to operate, and ensuring that an operator needs to wear labor protection products and cannot leave or cross posts after starting;
s4, before the straightening block is not completely fixed and the protective cover is not covered, an operator cannot penetrate into the reinforcing steel bar so as to prevent the straightening block from flying out to hurt people after the machine is started;
s5, installing a steel pipe with the length of one meter at the end of the steel bar entering the straightening inner box, and inserting the steel bar to be straightened into the straightening inner box after the steel bar to be straightened firstly passes through the steel pipe so as to prevent the end of each coil of the steel bar from popping out to hurt people when the steel bar is close to being straightened;
and S6, after the machine is shut down, the main power supply is closed, and the program controller cannot be changed freely.
The invention has the beneficial effects that: the reinforcing steel bar straightening device and method in the reinforcing steel bar processing, the reinforcing steel bar to be straightened is sent into the straightening inner box by an operator, then the motor is started, because the electric telescopic rod and the motor use the same power cord, the electric telescopic rod is powered on when the motor is powered on, but the instruction of shortening the extension is not provided, when the reinforcing steel bar passes through the straightening inner box, if the reinforcing steel bar is in a bent state, the rolling beads roll over the surface of the reinforcing steel bar and move inwards, so that the moving transverse plate can also move on the inner wall of the hollow square-shaped block and drive the connecting rod to move inwards together, the movement of the connecting rod can drive the movement of the transition disc, the movement of the transition disc can extrude the telescopic rod, at the moment, the telescopic rod contracts and deforms the compression spring to generate resilience force, after the reinforcing bar aligning to this moment, because make the telescopic link recover by the resilience force, before getting into the aligning inner box, control electric telescopic handle and carry out reciprocating extension and shrink, make the striking piece carry out first aligning operation to the reinforcing bar to real-time aligning has been carried out in reinforcing bar course of working, the effect of the efficiency of improvement production has been reached.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a cross-sectional view of a straightened inner box of the present invention;
FIG. 3 is an enlarged view of the structure A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the structure B shown in FIG. 2 according to the present invention;
FIG. 5 is a perspective view of the electric telescopic rod of the present invention;
FIG. 6 is a cut-away perspective view of the restraining disk of the present invention.
In the figure: 1. a straightening machine; 2. straightening the inner box; 3. a first engagement groove; 4. a second engagement groove; 5. a trapezoidal cushion block; 6. a hollow block in a shape of a Chinese character 'hui'; 7. moving the transverse plate; 8. a connecting rod; 9. a transition disc; 10. a clamping groove; 11. a retractor; 12. a special-shaped extrusion block; 13. rotating the sleeve; 14. straightening rollers; 15. an electric telescopic rod; 16. a confinement plate; 17. a card slot; 18. a rolling track; 19. rolling the beads; 20. an impact block; 21. and (7) clamping blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a reinforcing steel bar device and a method for straightening reinforcing steel bars in reinforcing steel bar processing includes a straightening machine 1, four pushing wheels are movably connected to the bottom end of the front side of the straightening machine 1, an auxiliary block is fixedly mounted on the right side of the front side of the straightening machine 1, safety in the production process is guaranteed, the reinforcing steel bars are prevented from shaking in an mess, safety conventional requirements of industrial production are met, and a straightening inner box 2 is fixedly mounted at the top end of the front side of the straightening machine 1.
Referring to fig. 2-6, a first engagement groove 3 is formed on the left side of the inner wall of the inner straightening box 2, a trapezoidal cushion block 5 is fixedly mounted on the inner wall of the first engagement groove 3, one end of the trapezoidal cushion block 5 close to the limiting disc 16 is fixedly connected with the top end of the electric telescopic rod 15, so that the mounting stability and the extending fluency of the electric telescopic rod 15 are enhanced, the trapezoidal cushion block 5 is ensured to serve as a barrier when the electric telescopic rod 15 extends, a second engagement groove 4 is formed on the inner wall of the inner straightening box 2, a hollow square-back block 6 is fixedly mounted on the inner wall of the second engagement groove 4, a movable transverse plate 7 is movably connected to the inner wall of the hollow square-back block 6, expansion pieces 11 are fixedly mounted on the left side and the right side of the bottom end of the hollow square-back block 6, an inner rod 11 of the expansion pieces is divided into an outer rod, a compression spring, the diameter of the inner wall of the compression spring is matched with the diameter of the outer wall of the inner rod, and the steel bar is conveniently straightened, the steel bar straightening machine is suitable for steel bars with different sizes and diameters, the adaptability of the machine is improved, the universality of the straightening machine 1 can be improved, the connecting rod 8 is fixedly installed at the bottom end of the movable transverse plate 7, the transition disc 9 is fixedly installed on the outer wall of the connecting rod 8, the clamping groove 10 is formed in the front of the transition disc 9, the special-shaped extrusion block 12 is fixedly installed on the outer wall of the bottom end of the connecting rod 8, the through groove is formed in the bottom end of the special-shaped extrusion block 12, the rotating rod is fixedly installed on the inner wall of the rotating sleeve 13, the movable connection of the straightening roller 14 is ensured, the generation of friction force is reduced in the operation of steel bar straightening, the service life of the straightening roller 14 is ensured, unnecessary financial loss is saved, the rotating sleeve 13 is fixedly installed on the front of the special-shaped extrusion block 12, the outer wall of the rotating sleeve 13 is movably connected with the straightening roller 14, the electric telescopic rod 15 is fixedly installed on the inner wall of the first fit groove 3, the top end of the electric telescopic rod 15 is fixedly provided with an impact block 20, the left side and the right side of the bottom end of the impact block 20 are both fixedly provided with clamping blocks 21, the inner wall of the first conjunction groove 3 is fixedly provided with a limiting disc 16, the front surface of the limiting disc 16 is provided with a communicating groove, the diameter of the inner wall of the communicating groove is three centimeters larger than that of the outer wall of the top end of the electric telescopic rod 15, the inner wall of the communicating groove can move when the electric telescopic rod 15 extends and shortens, the blocking is avoided, so that no friction exists, the straightening efficiency is improved, the left side and the right side of the top end of the limiting disc 16 are both provided with clamping grooves 17, the width of each clamping groove 17 is three millimeters wider than that of the clamping block 21, the depth of each clamping groove 17 is two millimeters deeper than that of the clamping block 21, the clamping block 21 and the clamping groove 17 can be conveniently in seamless clamping, the contraction of the electric telescopic rod 15 is limited, and the transitional contraction is avoided, the straightening efficiency is reduced, a rolling rail 18 is fixedly arranged on the inner wall of the limiting disc 16, and a rolling ball 19 is movably connected to the inner wall of the rolling rail 18.
Example 1:
the method for straightening the steel bar in the steel bar processing comprises the following steps:
s1, before starting, checking whether hydraulic oil of the hydraulic station, gear oil of the reduction gearbox and the transmission box are fully stored, and before starting the main motor, carrying out corner checking adjustment and hydraulic system working pressure adjustment;
s2, selecting proper straightening blocks and transmission speed according to the diameter of the steel bar to be straightened, wherein the aperture of each straightening block is 2mm larger than the diameter of the steel bar to be straightened;
s3, injecting lubricating oil into each lubricating node, checking the operation condition of the mechanical transmission part, ensuring that the mechanical transmission part is flexible to operate, and ensuring that an operator needs to wear labor protection products and cannot leave or cross posts after starting;
s4, before the straightening block is not completely fixed and the protective cover is not covered, an operator cannot penetrate into the reinforcing steel bar so as to prevent the straightening block from flying out to hurt people after the machine is started;
s5, installing a steel pipe with the length of one meter at the end of the steel bar entering the straightening inner box 2, and inserting the steel bar to be straightened into the straightening inner box 2 after the steel bar to be straightened passes through the steel pipe to prevent the end of each coil of steel bar from popping up to hurt people when the steel bar is close to being straightened;
and S6, after the machine is shut down, the main power supply is closed, and the program controller cannot be changed freely.
Example 2:
the method for straightening the steel bar in the steel bar processing comprises the following steps:
s1, before starting, checking whether hydraulic oil of the hydraulic station, gear oil of the reduction gearbox and the transmission box are fully stored, and before starting the main motor, carrying out corner checking adjustment and hydraulic system working pressure adjustment;
s2, selecting proper straightening blocks and transmission speed according to the diameter of the steel bar to be straightened, wherein the aperture of each straightening block is 3.5mm larger than the diameter of the steel bar to be straightened;
s3, injecting lubricating oil into each lubricating node, checking the operation condition of the mechanical transmission part, ensuring that the mechanical transmission part is flexible to operate, and ensuring that an operator needs to wear labor protection products and cannot leave or cross posts after starting;
s4, before the straightening block is not completely fixed and the protective cover is not covered, an operator cannot penetrate into the reinforcing steel bar so as to prevent the straightening block from flying out to hurt people after the machine is started;
s5, installing a steel pipe with the length of one meter at the end of the steel bar entering the straightening inner box 2, and inserting the steel bar to be straightened into the straightening inner box 2 after the steel bar to be straightened passes through the steel pipe to prevent the end of each coil of steel bar from popping up to hurt people when the steel bar is close to being straightened;
and S6, after the machine is shut down, the main power supply is closed, and the program controller cannot be changed freely.
Example 3:
the method for straightening the steel bar in the steel bar processing comprises the following steps:
s1, before starting, checking whether hydraulic oil of the hydraulic station, gear oil of the reduction gearbox and the transmission box are fully stored, and before starting the main motor, carrying out corner checking adjustment and hydraulic system working pressure adjustment;
s2, selecting proper straightening blocks and transmission speed according to the diameter of the steel bar to be straightened, wherein the aperture of each straightening block is 5mm larger than the diameter of the steel bar to be straightened;
s3, injecting lubricating oil into each lubricating node, checking the operation condition of the mechanical transmission part, ensuring that the mechanical transmission part is flexible to operate, and ensuring that an operator needs to wear labor protection products and cannot leave or cross posts after starting;
s4, before the straightening block is not completely fixed and the protective cover is not covered, an operator cannot penetrate into the reinforcing steel bar so as to prevent the straightening block from flying out to hurt people after the machine is started;
s5, installing a steel pipe with the length of one meter at the end of the steel bar entering the straightening inner box 2, and inserting the steel bar to be straightened into the straightening inner box 2 after the steel bar to be straightened passes through the steel pipe to prevent the end of each coil of steel bar from popping up to hurt people when the steel bar is close to being straightened;
and S6, after the machine is shut down, the main power supply is closed, and the program controller cannot be changed freely.
In summary, in the reinforcing bar straightening device and method for processing reinforcing bars, an operator sends reinforcing bars to be straightened into the straightening inner box 2 and then starts the motor, because the electric telescopic rod 15 and the motor use the same power cord, the electric telescopic rod 15 is powered on while the motor is powered on, but no command for shortening is provided for stretching, when the reinforcing bars pass through the straightening inner box 2, if the reinforcing bars are in a bent state, the rolling beads 19 roll over the surfaces of the reinforcing bars and move inwards, so that the moving transverse plate 7 also moves on the inner wall of the hollow block 6 and moves inwards together with the connecting rods 8, the movement of the connecting rods 8 drives the movement of the transition disc 9, the movement of the transition disc 9 presses the telescopic rod 11, and the telescopic rod 11 contracts, and make compression spring deformation, produce the resilience force, after the reinforcing bar aligning this moment, owing to make telescopic link 11 recover by the resilience force, before getting into aligning inner box 2, control electric telescopic handle 15 and carry out reciprocal extension and shrink, make striking block 20 carry out first straightening operation to the reinforcing bar to reach and carried out real-time aligning in the reinforcing bar course of working, improved the effect of the efficiency of production.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. A reinforcing steel bar device and a method for straightening reinforcing steel bars in reinforcing steel bar processing comprise a straightening machine (1), and are characterized in that: the top end of the front surface of the straightening machine (1) is fixedly provided with a straightening inner box (2);
a first conjunction groove (3) is formed in the left side of the inner wall of the inner straightening box (2), a trapezoidal cushion block (5) is fixedly mounted on the inner wall of the first conjunction groove (3), a second conjunction groove (4) is formed in the inner wall of the inner straightening box (2), a hollow square-shaped block (6) is fixedly mounted on the inner wall of the second conjunction groove (4), a movable transverse plate (7) is movably connected to the inner wall of the hollow square-shaped block (6), expansion pieces (11) are fixedly mounted on the left side and the right side of the bottom end of the hollow square-shaped block (6), a connecting rod (8) is fixedly mounted at the bottom end of the movable transverse plate (7), a transition disc (9) is fixedly mounted on the outer wall of the connecting rod (8), a clamping groove (10) is formed in the front of the transition disc (9), a special-shaped extrusion block (12) is fixedly mounted on the outer wall of the bottom end of the connecting rod (8), and a rotating sleeve (13) is fixedly mounted on the front of the extrusion block (12), the outer wall swing joint that rotates sleeve (13) has straightening roller (14), the inner wall fixed mounting who agrees with groove (3) first has electric telescopic handle (15), the top fixed mounting of electric telescopic handle (15) has striking piece (20), the equal fixed mounting in the bottom left and right sides of striking piece (20) has fixture block (21), the inner wall fixed mounting who agrees with groove (3) first has limiting disc (16), draw-in groove (17) have all been seted up to the top left and right sides of limiting disc (16), the inner wall fixed mounting of limiting disc (16) has rolling track (18), the inner wall swing joint of rolling track (18) has rolling pearl (19).
2. The rebar apparatus of claim 1 for straightening rebar during processing of the rebar, wherein: the straightening machine is characterized in that pushing wheels are movably connected to the bottom end of the front side of the straightening machine (1), the number of the pushing wheels is four, and an auxiliary block is fixedly mounted on the right side of the front side of the straightening machine (1).
3. The rebar apparatus of claim 1 for straightening rebar during processing of the rebar, wherein: one end of the trapezoidal cushion block (5) close to the limiting disc (16) is fixedly connected with the top end of the electric telescopic rod (15).
4. The rebar apparatus of claim 1 for straightening rebar during processing of the rebar, wherein: the expansion piece (11) is divided into an outer rod, an inner rod and a compression spring, and the diameter of the inner wall of the compression spring is matched with the diameter of the outer wall of the inner rod.
5. The rebar apparatus of claim 1 for straightening rebar during processing of the rebar, wherein: the bottom end of the special-shaped extrusion block (12) is provided with a through groove, and the inner wall of the rotating sleeve (13) is fixedly provided with a rotating rod.
6. The apparatus of claim 1, wherein the straightening mechanism comprises: the front surface of the limiting disc (16) is provided with a communicating groove, and the diameter of the inner wall of the communicating groove is three centimeters larger than the outer wall of the top end of the electric telescopic rod (15).
7. The rebar apparatus of claim 1 for straightening rebar during processing of the rebar, wherein: the width of the clamping groove (17) is three millimeters wider than that of the clamping block (21), and the depth of the clamping groove (17) is two millimeters deeper than that of the clamping block (21).
8. A method of straightening steel in connection with the working of the bars according to claim 1, characterized in that it comprises the following steps:
s1, before starting, checking whether hydraulic oil of the hydraulic station, gear oil of the reduction gearbox and the transmission box are fully stored, and before starting the main motor, carrying out corner checking adjustment and hydraulic system working pressure adjustment;
s2, selecting proper straightening blocks and transmission speed according to the diameter of the steel bar to be straightened, wherein the aperture of each straightening block is 2-5 mm larger than the diameter of the steel bar to be straightened;
s3, injecting lubricating oil into each lubricating node, checking the operation condition of the mechanical transmission part, ensuring that the mechanical transmission part is flexible to operate, and ensuring that an operator needs to wear labor protection products and cannot leave or cross posts after starting;
s4, before the straightening block is not completely fixed and the protective cover is not covered, an operator cannot penetrate into the reinforcing steel bar so as to prevent the straightening block from flying out to hurt people after the machine is started;
s5, installing a steel pipe with the length of one meter at the end of the steel bar entering the straightening inner box (2), and inserting the steel bar to be straightened into the straightening inner box (2) to prevent the end of each coil of steel bar from popping out to hurt people when the steel bar approaches to straightening;
and S6, after the machine is shut down, the main power supply is closed, and the program controller cannot be changed freely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187470.XA CN113695482A (en) | 2021-10-12 | 2021-10-12 | Reinforcing steel bar device and method for straightening reinforcing steel bar in reinforcing steel bar processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187470.XA CN113695482A (en) | 2021-10-12 | 2021-10-12 | Reinforcing steel bar device and method for straightening reinforcing steel bar in reinforcing steel bar processing |
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| Publication Number | Publication Date |
|---|---|
| CN113695482A true CN113695482A (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111187470.XA Withdrawn CN113695482A (en) | 2021-10-12 | 2021-10-12 | Reinforcing steel bar device and method for straightening reinforcing steel bar in reinforcing steel bar processing |
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| CN (1) | CN113695482A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951503A (en) * | 2022-07-29 | 2022-08-30 | 徐州硕勤机械制造有限公司 | Steel bar straightening machine for construction of steel bar framework in constructional engineering |
-
2021
- 2021-10-12 CN CN202111187470.XA patent/CN113695482A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951503A (en) * | 2022-07-29 | 2022-08-30 | 徐州硕勤机械制造有限公司 | Steel bar straightening machine for construction of steel bar framework in constructional engineering |
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Application publication date: 20211126 |
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