CN110976700A - Steel bar straightening and cutting machine driven by hydraulic cylinder to press - Google Patents
Steel bar straightening and cutting machine driven by hydraulic cylinder to press Download PDFInfo
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- CN110976700A CN110976700A CN201911228815.4A CN201911228815A CN110976700A CN 110976700 A CN110976700 A CN 110976700A CN 201911228815 A CN201911228815 A CN 201911228815A CN 110976700 A CN110976700 A CN 110976700A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 title abstract description 17
- 239000010959 steel Substances 0.000 title abstract description 17
- 244000208734 Pisonia aculeata Species 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 abstract description 14
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 9
- 230000009471 action Effects 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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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
- B21F1/026—Straightening and cutting
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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
- B21F11/00—Cutting wire
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Abstract
The invention discloses a steel bar straightening and cutting machine driven by a hydraulic cylinder to be pressed, which comprises a transverse straightening part, a traction part, a longitudinal straightening part, a straightening machine cutting mechanism and a straightening machine base, wherein the transverse straightening part, the traction part, the longitudinal straightening part and the straightening machine cutting mechanism are all arranged on the straightening machine base. The hydraulic cylinder is used as power, a piston push rod extending out of the hydraulic cylinder pushes a sliding block provided with a straightening roller bearing, the sliding block is controlled to move up and down by oil inlet and outlet of an extending cylinder and a pull-back cylinder arranged on the hydraulic cylinder, and the moving distance of a piston rod, namely the moving amount of the straightening roller, is measured by a displacement sensor. The method effectively controls the accuracy of the rolling reduction, ensures the straightening accuracy, and simultaneously rationalizes the stress of each straightening roller to a certain extent so as to prolong the service life of the straightening roller.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a steel bar straightening and cutting machine driven by a hydraulic cylinder to press.
Background
The steel bar is one of the most basic materials in the construction industry, and with the rapid development of domestic infrastructure construction, the demand of the steel bar is increased day by day and the application amount is huge. However, the reinforcing steel bars are often subjected to various shape defects, such as arc-shaped bending, due to various factors during rolling, cooling and transportation, and in order to eliminate the bending, the reinforcing steel bars need to be straightened so that the reinforcing steel bars can have optimal mechanical properties in engineering applications. The reduction must be precise as an important process parameter in the straightening process. In the same straightening system, the whole reinforcing steel bar straightening effect can be influenced by slightly adjusting the pressing amount. At present, generally, the adjustment of the pressing amount during straightening processing is manually operated by depending on the experience of workers, and the adjustment mode has no theoretical basis and the straightening effect is unstable. Therefore, the method for obtaining the reasonable rolling reduction through theoretical calculation and then adjusting the rolling reduction of the straightening roller through hydraulic equipment is more and more popular to be accepted. The automatic straightening machine has the advantages that the automation degree of the straightening machine is improved, and meanwhile, the straightening precision and the machining efficiency are improved.
Disclosure of Invention
The invention aims to provide a steel bar straightening and cutting machine driven by a hydraulic cylinder, which solves the technical problems and comprises the following steps:
the utility model provides a bar straightening cutter under pneumatic cylinder drive pressure, includes horizontal straightening part, traction part, vertical straightening part, straightener shutdown mechanism and straightener base, horizontal straightening part, traction part, vertical straightening part, straightener shutdown mechanism all set up on the straightener base.
The preferable scheme of the hydraulic cylinder driven steel bar straightening and cutting machine is that the transverse straightening part comprises a guide sleeve a, a straightening roller bearing a, a transverse straightening part bottom plate, a threaded hole reserved for a fixed bottom plate and a pressing device driven by a hydraulic cylinder;
the straightening roller a is connected to the transverse straightening part bottom plate through a bearing, the guide sleeve a is fixed to the transverse straightening part bottom plate in a welding mode, the center of the guide sleeve a and the center of the groove of the straightening roller a are kept on the same horizontal straight line, and the pressing device driven by the hydraulic cylinder is fastened to the transverse straightening part bottom plate in a threaded connection mode.
The preferable scheme of the steel bar straightening and cutting machine driven by the hydraulic cylinder is that the traction part comprises a traction box, a pressing device driven by the hydraulic cylinder, a sleeve, a traction wheel bearing and a guide sleeve b;
the traction wheel is arranged on a traction box with a sleeve through a traction wheel bearing, the traction box is assembled by an upper part and a lower part in a bolt connection mode, a pressing device driven by a hydraulic cylinder is fastened on a traction box body in a threaded connection mode, a guide sleeve b on the traction box is fixed at the central positions of two groups of traction wheels in a welding mode, and the position relation of the guide sleeve b of the traction part and the position relation of the guide sleeve a of the straightening part are concentric.
The steel bar straightening and cutting machine driven by the hydraulic cylinder has the preferred scheme that the longitudinal straightening part comprises a pressing device driven by the hydraulic cylinder, a straightening roller bearing b, a straightening roller b, a guide sleeve c, a threaded hole reserved for a fixed bottom plate and a longitudinal straightening part bottom plate;
the straightening roller b is connected to the longitudinal straightening part bottom plate through a straightening roller bearing b, the guide sleeve c is fixed on the longitudinal straightening part bottom plate in a welding mode, the center of the guide sleeve c and the center of the groove of the straightening roller b are kept on the same horizontal straight line, and the pressing device driven by the hydraulic cylinder is fastened on the longitudinal straightening part bottom plate in a threaded connection mode.
The steel bar straightening and cutting machine driven by the hydraulic cylinder has the preferred scheme that the straightening machine cutting mechanism comprises a servo motor, a cutting support arm, a hydraulic cylinder output shaft, a cutting arm, a pin shaft a and a cutting part base;
the servo motor is clamped on the base of the cutting part, the output shaft of the hydraulic cylinder is connected with the cutting support arm in a threaded connection mode, and the cutting support arm is connected with the cutting support arm in a mode of being matched with the pin shaft a and transmits the power of the motor to the cutting support arm;
the preferable scheme of the steel bar straightening and cutting machine driven by the hydraulic cylinder is that the pressing device driven by the hydraulic cylinder comprises the hydraulic cylinder, a hydraulic cylinder boss, a countersunk head screw hole, a hydraulic cylinder extending piston, a hydraulic cylinder pull-back piston, a pin shaft b, a sliding block, a straightening roller c and a straightening roller bearing c;
the hydraulic cylinder is fixed on each bottom plate frame in a bolt connection mode through a threaded hole reserved in the boss; the hydraulic cylinder pull-back piston is connected with the sliding block through a pin shaft b, in the process of adjusting the pressing amount, the hydraulic cylinder extends out of the piston and extends out of the upper cavity of the cylinder along with oil supply, the top end of the hydraulic cylinder extends into the sliding block to press the straightening roller c, and the oil is not supplied in the pull-back cavity of the hydraulic cylinder in the process, so that the pull-back cavity only plays a role of connecting the sliding block; when the straightening roller c needs to be lifted after the system straightening is finished, the oil inlet of the lower cavity of the pull-back cylinder extends out of the cylinder at the same time to be in a loose state, the sliding block connected with the straightening roller c is lifted, and the straightening roller c is lifted.
The hydraulic cylinder driven steel bar straightening and cutting machine driven by the hydraulic cylinder has the preferred scheme that the centers of an upper traction wheel and a lower traction wheel in the traction part are on the same vertical line.
The hydraulic cylinder is provided with two extending cylinders and a pull-back cylinder, each hydraulic cylinder is provided with a closed loop, a pin shaft for connecting the pull-back cylinder and a sliding block, the sliding block provided with a straightening roller bearing, a straightening roller and a roller bearing. In the straightening process of the steel bar, the distance between two rows of straightening rollers at the corresponding positions of the adjustable straightening roller hydraulic cylinders is detected in real time through the linear displacement sensor, namely the value of the distance between the adjustable rollers and the position with zero rolling reduction is measured. When the system sends a pressing instruction, oil enters from the extending cylinder chambers at two sides of the hydraulic cylinder so that the piston push rod extends, and the pressing action is realized after the top end of the push rod is contacted with the sliding block provided with the straightening roller. The specific description is as follows: piston push rods extending out of the hydraulic cylinders at two sides select a three-position four-way O-shaped electro-hydraulic servo valve to control one end of a piston rod of the electro-hydraulic servo valve. The servo control valve supplies oil to the upper cavity of the hydraulic cylinder by adopting a large-flow pump, so that the pressure of the upper cavity of the hydraulic cylinder is rapidly increased, the straightening roller fixed at the lower end opposite to the movable straightening roller can rapidly move downwards under the action of the internal pressure of the hydraulic cylinder, and the pressing amount of the adjustable roller is increased accordingly. In order to ensure that the pressing amount reaches an accurate theoretical value, namely the servo valve is unloaded when the theoretical value is reached, a small-flow pump is adopted to supply oil to a lower cavity extending out of the hydraulic cylinder, so that the pressure of the upper cavity of the hydraulic cylinder is reduced, the downward moving speed of a driving push rod of the straightening roller becomes slow, and the value reaching the theoretically calculated pressing amount is stopped and maintained. The back-drawing cylinder chamber in the above time interval has no pressure oil because the back-drawing cylinder is connected with the slide block equipped with the straightening roller by the pin shaft, so that the back-drawing cylinder also follows the extension when the push rod of the extension cylinder is fixed, which means the determination of the pressing amount, and the adjustment action of the whole pressing amount.
In order to accurately control the amount of depression of a position sensor, which is indispensable during depression, a displacement sensor is incorporated in a hydraulic cylinder, the amount of displacement measured is converted into a current amount, the current amount is input to an a/D module of a PLC, and a position value detected by the sensor is compared with a position value set by theoretical calculation. The PLC calculates corresponding control quantity by the difference value and adopting a proper control strategy, then the control quantity outputs control voltage through the D/A module, the control voltage is amplified by the amplifier and converted into a current form to be input into the proportional servo valve, the flow of the proportional servo valve is controlled by the way, and finally a result that the position of the hydraulic cylinder is consistent with a set value is obtained. In order to ensure a vertical depression of the straightening roller, the hydraulic cylinders on both sides must also be moved synchronously in each case. This is done by monitoring the difference between the extension of the cylinder (in relation to the set position) and feeding this signal back to the basic position control loop. When the processing is finished or the reduction amount is required to be reduced, oil is fed into the lower chamber of the pull-back cylinder, so that the straightening roller provided with the sliding block is lifted up.
The invention has the beneficial effects that: compared with the traditional straightening machine which manually adjusts the pressing amount through experience, the novel straightening machine provided by the invention has the advantages that the device can calculate the pressing amount according to specific materials and types of processed steel bars and then automatically adjust the pressing amount according to the required amount through the position sensor, and the adjusting process is more accurate, rapid and stable. The device is more suitable for quick and mass production under the working condition. The time for stopping and waiting for adjustment of the screw-down amount adjustment by workers can be obviously shortened, and the problems of errors and the like caused by manual adjustment by the workers through experience can be effectively reduced. The device can accurately control the amount of the pressing amount. A piston push rod extending out of the hydraulic cylinder extends out of the cylinder to push a sliding block provided with a straightening roller bearing, the stretching of the piston rod is controlled by changing the oil inlet and outlet amount in the extension cylinder and the pull-back cylinder, and the moving distance of the piston rod, namely the moving distance of the straightening roller, is measured by a displacement sensor. In order to ensure the stability of the whole pressing process, the displacement information of the extending cylinders on the two sides must be fed back, and the displacement and the speed of the two extending cylinders are coordinated in a mode of controlling the flow of the servo valves on the two sides, so that the two extending cylinders are kept in the same height. The rolling reduction is calculated according to the model and the bending degree of the currently processed steel bar through the metal elastic-plastic theory, the rolling reduction values are calculated on the premise of ensuring the minimum overall stress of the straightening roller of the straightener, and the service life of the straightener can be prolonged to the maximum extent through the accurate rolling reduction. The use frequency of unreasonable load is reduced, the bearing unevenness of the straightening roller is reduced, the shaft breakage risk of the straightening roller is reduced, and the service life of the whole straightening machine is prolonged.
Drawings
FIG. 1 is an assembly view of a hydraulic cylinder driven press-down bar straightening and cutting machine;
FIG. 2 is a three-dimensional view of a transverse straightening portion of the hydraulic cylinder driven screwdown reinforcement bar straightening machine;
FIG. 3 is a three-dimensional view of the traction portion of the hydraulic cylinder driven reduction bar straightener;
FIG. 4 is a three-dimensional view of a longitudinal straightening portion of the hydraulic cylinder driven reduction bar straightener;
FIG. 5 is a three-dimensional view of a cut-off portion of the hydraulic cylinder driven reduction bar straightener;
FIG. 6 is a three-dimensional view of a hydraulic cylinder driven screw down;
fig. 7 is a schematic view of the hydraulic cylinder driven screw down device.
In the figure, 1 a transverse straightening part, 2 a straightener base, 3 a traction part, 4 a screwdown device driven by a hydraulic cylinder, 5 a longitudinal straightening part, 5 a straightener cutting part, 7 guide sleeves a, 8 straightening roller bearings a, 9 straightening rollers a, 10 a transverse straightening part bottom plate, 11 a threaded hole reserved for a fixed bottom plate, 12 a traction box, 13 sleeves, 14 traction wheels, 15 traction wheel bearings, 16 guide sleeves b, 17 straightening roller bearings b and 18 straightening rollers b, the guide sleeves c and 20 are provided with threaded holes for fixing the base plate, a base plate for longitudinally straightening 21, a servo motor 22, a cutting support arm 23, a hydraulic cylinder output shaft 24, a cutting arm 25, a pin shaft a26, a base for cutting 27, a hydraulic cylinder 28, a hydraulic cylinder boss 29, a countersunk screw hole 30, a hydraulic cylinder extending piston 31, a piston pulled by a hydraulic cylinder 32, a pin shaft b33, a sliding block 34, a straightening roller c35 and a straightening roller bearing c 36.
Detailed Description
The technical solutions of the embodiments of the present invention are clearly and completely described below with reference to the drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
The utility model provides a bar straightening cutter under pneumatic cylinder drive pressure, includes horizontal straightening part 1, traction part 2, vertical straightening part 3, straightener shutdown mechanism 5 and straightener base 6, horizontal straightening part 1, traction part 2, vertical straightening part 3, straightener shutdown mechanism 5 all set up on straightener base 6.
The transverse straightening part 1 comprises a guide sleeve a7, a straightening roller a8, a straightening roller bearing a9, a transverse straightening part bottom plate 10, a threaded hole 11 reserved for a fixed bottom plate and a hydraulic cylinder driven screw-down device 4;
the straightening roller a8 is connected to the transverse straightening part bottom plate 10 through a bearing, the guide sleeve a7 is fixed on the transverse straightening part bottom plate 10 in a welding mode, the center of the guide sleeve a7 and the center of the groove of the straightening roller a8 are kept on the same horizontal straight line, and the screw-down device 4 driven by the hydraulic cylinder is fastened on the transverse straightening part bottom plate 10 in a threaded connection mode.
The traction part 2 comprises a traction box 12, a hydraulic cylinder driven pressing device 4, a sleeve 13, a traction wheel 14, a traction wheel bearing 15 and a guide sleeve b 16;
the traction wheel 14 is arranged on a traction box 12 with a sleeve 13 through a traction wheel bearing 15, the traction box 12 is divided into an upper part and a lower part which are assembled in a bolt connection mode, a pressing device 4 driven by a hydraulic cylinder is fastened on a box body of the traction box 12 in a threaded connection mode, a guide sleeve b16 on the traction box 12 is fixed in the center position of two groups of traction wheels 14 in a welding mode, and the guide sleeve b14 of the traction part 2 is to be kept in a concentric position relation with the guide sleeve a7 of the straightening part 1.
The longitudinal straightening part 5 comprises a pressing device 4 driven by a hydraulic cylinder, a straightening roller bearing b17, a straightening roller b18, a guide sleeve c19, a threaded hole 20 reserved for a fixed bottom plate and a longitudinal straightening part bottom plate 21;
the straightening roller b18 is connected to the longitudinal straightening part bottom plate 21 through a straightening roller bearing b17, the guide sleeve c19 is fixed on the longitudinal straightening part bottom plate 21 in a welding mode, the center of the guide sleeve c19 and the center of the groove of the straightening roller b18 are kept on the same horizontal straight line, and the screw-down device 4 driven by the hydraulic cylinder is fastened on the longitudinal straightening part bottom plate 21 in a threaded connection mode.
The straightener cutting mechanism 5 comprises a servo motor 22, a cutting support arm 23, a hydraulic cylinder output shaft 24, a cutting arm 25, a pin shaft a26 and a cutting part base 27;
the servo motor 22 is clamped on the cutting part base 27, the hydraulic cylinder output shaft 24 is connected with the cutting arm 25 in a threaded connection mode, the cutting arm 25 is connected with the cutting arm 25 in a mode of being matched with the pin shaft a26, and the power of the motor is transmitted to the cutting arm 25;
the hydraulic cylinder driven screw-down device 4 comprises a hydraulic cylinder 28, a hydraulic cylinder boss 29, a countersunk screw hole 30, a hydraulic cylinder extension piston 31, a hydraulic cylinder pull-back piston 32, a pin shaft b33, a slide block 34, a straightening roller c35 and a straightening roller bearing c 36;
the hydraulic cylinder 28 is fixed on each bottom plate frame in a bolt connection mode through a threaded hole reserved in a hydraulic cylinder boss 29; the hydraulic cylinder pull-back piston 32 is connected with the slide block 34 through a pin shaft b33, in the process of adjusting the pressing amount, the hydraulic cylinder extension piston 31 extends outwards along with the oil supply in the upper cavity of the extension cylinder, the top end of the hydraulic cylinder extension piston is contacted with the slide block 34 to press the straightening roller c35, the oil is not supplied in the pull-back cavity of the hydraulic cylinder in the process, and the pull-back cavity only plays a role of connecting the slide block in a loose state; when the straightening roller needs to be lifted after the system is straightened, the lower chamber of the pull-back cylinder is fed with oil and simultaneously extends out of the cylinder to be in a loose state, the sliding block 34 connected with the straightening roller c35 is lifted, and the straightening roller c35 is lifted.
The centers of the upper and lower traction wheels 14 in the traction part 3 are on the same vertical line.
The hydraulic cylinder is provided with two extending cylinders and a pull-back cylinder, each hydraulic cylinder is provided with a closed loop, a pin shaft for connecting the pull-back cylinder and a sliding block, the sliding block provided with a straightening roller bearing, a straightening roller and a roller bearing. In the straightening process of the steel bar, the distance between two rows of straightening rollers at the corresponding positions of the adjustable straightening roller hydraulic cylinders is detected in real time through the linear displacement sensor, namely the value of the distance between the adjustable rollers and the position with zero rolling reduction is measured. When the system sends a pressing instruction, oil enters from the extending cylinder chambers at two sides of the hydraulic cylinder so that the piston push rod extends, and the pressing action is realized after the top end of the push rod is contacted with the sliding block provided with the straightening roller. The specific description is as follows: piston push rods extending out of the hydraulic cylinders at two sides select a three-position four-way O-shaped electro-hydraulic servo valve to control one end of a piston rod of the electro-hydraulic servo valve. The servo control valve supplies oil to the upper cavity of the hydraulic cylinder by adopting a large-flow pump, so that the pressure of the upper cavity of the hydraulic cylinder is rapidly increased, the straightening roller fixed at the lower end opposite to the movable straightening roller can rapidly move downwards under the action of the internal pressure of the hydraulic cylinder, and the pressing amount of the adjustable roller is increased accordingly. In order to ensure that the pressing amount reaches an accurate theoretical value, namely the servo valve is unloaded when the theoretical value is reached, a small-flow pump is adopted to supply oil to a lower cavity extending out of the hydraulic cylinder, so that the pressure of the upper cavity of the hydraulic cylinder is reduced, the downward moving speed of a driving push rod of the straightening roller becomes slow, and the value reaching the theoretically calculated pressing amount is stopped and maintained. The back-drawing cylinder chamber in the above time interval has no pressure oil because the back-drawing cylinder is connected with the slide block equipped with the straightening roller by the pin shaft, so that the back-drawing cylinder also follows the extension when the push rod of the extension cylinder is fixed, which means the determination of the pressing amount, and the adjustment action of the whole pressing amount.
In order to accurately control the amount of depression of a position sensor, which is indispensable during depression, a displacement sensor is incorporated in a hydraulic cylinder, the amount of displacement measured is converted into a current amount, the current amount is input to an a/D module of a PLC, and a position value detected by the sensor is compared with a position value set by theoretical calculation. The PLC calculates corresponding control quantity by the difference value and adopting a proper control strategy, then the control quantity outputs control voltage through the D/A module, the control voltage is amplified by the amplifier and converted into a current form to be input into the proportional servo valve, the flow of the proportional servo valve is controlled by the way, and finally a result that the position of the hydraulic cylinder is consistent with a set value is obtained. In order to ensure a vertical depression of the straightening roller, the hydraulic cylinders on both sides must also be moved synchronously in each case. This is done by monitoring the difference between the extension of the cylinder (in relation to the set position) and feeding this signal back to the basic position control loop. When the processing is finished or the reduction amount is required to be reduced, oil is fed into the lower chamber of the pull-back cylinder, so that the straightening roller provided with the sliding block is lifted up.
Claims (7)
1. The utility model provides a bar straightening cutter under pneumatic cylinder drive, its characterized in that: the straightening machine comprises a transverse straightening part, a traction part, a longitudinal straightening part, a straightening machine cutting mechanism and a straightening machine base, wherein the transverse straightening part, the traction part, the longitudinal straightening part and the straightening machine cutting mechanism are all arranged on the straightening machine base.
2. A cylinder driven bar straightening and cutting machine according to claim 1, wherein: the transverse straightening part comprises a guide sleeve a, a straightening roller bearing a, a transverse straightening part bottom plate, a threaded hole reserved for a fixed bottom plate and a pressing device driven by a hydraulic cylinder;
the straightening roller a is connected to the transverse straightening part bottom plate through a bearing, the guide sleeve a is fixed to the transverse straightening part bottom plate in a welding mode, the center of the guide sleeve a and the center of the groove of the straightening roller a are kept on the same horizontal straight line, and the pressing device driven by the hydraulic cylinder is fastened to the transverse straightening part bottom plate in a threaded connection mode.
3. A cylinder driven bar straightening and cutting machine according to claim 1, wherein: the traction part comprises a traction box, a pressing device driven by a hydraulic cylinder, a sleeve, a traction wheel bearing and a guide sleeve b;
the traction wheel is arranged on a traction box with a sleeve through a traction wheel bearing, the traction box is assembled by an upper part and a lower part in a bolt connection mode, a pressing device driven by a hydraulic cylinder is fastened on a traction box body in a threaded connection mode, a guide sleeve b on the traction box is fixed at the central positions of two groups of traction wheels in a welding mode, and the position relation of the guide sleeve b of the traction part and the position relation of the guide sleeve a of the straightening part are concentric.
4. A cylinder driven bar straightening and cutting machine according to claim 1, wherein: the longitudinal straightening part comprises a pressing device driven by a hydraulic cylinder, a straightening roller bearing b, a straightening roller b, a guide sleeve c, a threaded hole reserved for a fixed bottom plate and a longitudinal straightening part bottom plate;
the straightening roller b is connected to the longitudinal straightening part bottom plate through a straightening roller bearing b, the guide sleeve c is fixed on the longitudinal straightening part bottom plate in a welding mode, the center of the guide sleeve c and the center of the groove of the straightening roller b are kept on the same horizontal straight line, and the pressing device driven by the hydraulic cylinder is fastened on the longitudinal straightening part bottom plate in a threaded connection mode.
5. A cylinder driven bar straightening and cutting machine according to claim 1, wherein: the straightener cutting mechanism comprises a servo motor, a cutting support arm, a hydraulic cylinder output shaft, a cutting arm, a pin shaft a and a cutting part base;
the servo motor is clamped on the base of the cutting part, the output shaft of the hydraulic cylinder is connected with the cutting support arm in a threaded connection mode, and the cutting support arm is connected with the cutting support arm in a mode of being matched with the pin shaft a and transmits the power of the motor to the cutting support arm.
6. A cylinder driven bar straightening and cutting machine according to claim 1, wherein: the pressing device driven by the hydraulic cylinder comprises the hydraulic cylinder, a hydraulic cylinder boss, a countersunk screw hole, a hydraulic cylinder extending piston, a hydraulic cylinder pull-back piston, a pin shaft b, a sliding block, a straightening roller c and a straightening roller bearing c;
the hydraulic cylinder is fixed on each bottom plate frame in a bolt connection mode through a threaded hole reserved in the boss; the hydraulic cylinder pull-back piston is connected with the sliding block through a pin shaft b, in the process of adjusting the pressing amount, the hydraulic cylinder extends out of the piston and extends out of the upper cavity of the cylinder along with oil supply, the top end of the hydraulic cylinder extends into the sliding block to press the straightening roller c, and the oil is not supplied in the pull-back cavity of the hydraulic cylinder in the process, so that the pull-back cavity only plays a role of connecting the sliding block; when the straightening roller c needs to be lifted after the system straightening is finished, the oil inlet of the lower cavity of the pull-back cylinder extends out of the cylinder at the same time to be in a loose state, the sliding block connected with the straightening roller c is lifted, and the straightening roller c is lifted.
7. A cylinder driven bar straightening and cutting machine according to claim 3, wherein: the centers of the upper traction wheel and the lower traction wheel in the traction part are on the same vertical line.
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| CN201911228815.4A CN110976700A (en) | 2020-03-02 | 2020-03-02 | Steel bar straightening and cutting machine driven by hydraulic cylinder to press |
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| CN201911228815.4A CN110976700A (en) | 2020-03-02 | 2020-03-02 | Steel bar straightening and cutting machine driven by hydraulic cylinder to press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112607504A (en) * | 2020-12-17 | 2021-04-06 | 广州众山精密科技有限公司 | Horizontal device of receiving at uniform velocity |
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| CN109500300A (en) * | 2018-12-30 | 2019-03-22 | 安志攀 | The method of concrete-bar straightening-cutting machine and bar straightening cutting |
| KR101989078B1 (en) * | 2019-03-25 | 2019-06-13 | 김찬식 | Manufacture mothod of wrench bolt |
| CN110449534A (en) * | 2019-07-17 | 2019-11-15 | 沈阳建筑大学 | A kind of modular digital control steel bar steel wire straightening and abscinding device |
| CN212216904U (en) * | 2019-12-04 | 2020-12-25 | 沈阳建筑大学 | Steel bar straightening and cutting machine driven by hydraulic cylinder to press |
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