CN109175155B - Double-speed steel bar straightening and cutting machine - Google Patents
Double-speed steel bar straightening and cutting machine Download PDFInfo
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- CN109175155B CN109175155B CN201811372329.5A CN201811372329A CN109175155B CN 109175155 B CN109175155 B CN 109175155B CN 201811372329 A CN201811372329 A CN 201811372329A CN 109175155 B CN109175155 B CN 109175155B
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- traction
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 150
- 230000008859 change Effects 0.000 claims abstract description 26
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 23
- 244000309464 bull Species 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention provides a double-speed steel bar straightening and cutting machine, which can solve the problems that the service life of a gear is influenced because the gear speed change mechanism of the traditional steel bar straightening and cutting machine is arranged on a feeding mechanism and a bent steel bar can cause the gear to be impacted to a certain extent and to generate bouncing phenomenon. The device comprises a feeding mechanism, a straightening mechanism, a traction mechanism, a cutting mechanism, a material receiving rack and a length fixing mechanism, wherein a working channel for a reinforcing steel bar to pass through is formed between the mechanisms; the feeding mechanism comprises a feeding pair roller, the traction mechanism comprises a traction pair roller, the feeding pair roller and the traction pair roller are synchronously driven through a chain, the feeding mechanism further comprises a gear speed changing mechanism, a straightening mechanism, a traction mechanism, a fixed-length mechanism and a cutting mechanism which are sequentially arranged on a table top of the machine frame side by side, the traction mechanism further comprises a traction motor, the traction motor is arranged in the machine frame, the traction motor is connected with a power input end of the gear speed changing mechanism, and a power output end of the gear speed changing mechanism is connected with a power input end of the traction pair roller.
Description
Technical Field
The invention relates to the field of steel bar straightening and cutting machinery, in particular to a double-speed steel bar straightening and cutting machine.
Background
The steel bar straightening and cutting machine is one common equipment for straightening and cutting steel bar in fixed length. At present, most of the steel bar straightening and cutting machines can only run at one design speed, and the efficiency and the processing cost cannot be considered for steel bars with different thicknesses and different fixed lengths, so that one machine cannot be used for multiple purposes.
The invention patent number ZL2009200091062 discloses a double-speed steel bar straightening and cutting machine, which comprises a feeding mechanism, a straightening mechanism, a material pulling pair roller, a cutting mechanism and a blanking frame which are arranged side by side in sequence, wherein a feeding length control mechanism is arranged on the blanking frame, the feeding mechanism comprises a feeding motor, a speed change mechanism and a feeding pair roller, and the feeding pair roller and the material pulling pair roller are synchronously driven through a chain. The speed change mechanism is a two-gear speed change, so that the machine can realize two different conveying speeds, and can select different conveying speeds to operate according to requirements when the steel bars with different thicknesses and different fixed lengths are straightened and cut off, thereby improving the efficiency, saving the cost and achieving multiple purposes. However, the speed change mechanism of the machine is arranged on the feeding mechanism, namely, the power output end of the speed change mechanism is connected with the power input end of the feeding counter roller, and as the bundled reinforcing steel bars delivered from the steel factory can have the phenomenon of collision in the loading, unloading and transporting processes, certain coils of the reinforcing steel bars can be bent and bent heads with different sizes, the feeding counter roller can have the phenomenon of pause and bounce when contacting the bent reinforcing steel bars, and gears in the gear speed change mechanism connected with the feeding counter roller can also be subjected to certain impact and bouncing phenomena, so that the service life of the gears is influenced.
Disclosure of Invention
Aiming at the problems that the service life of the gear is influenced because the gear speed change mechanism is arranged on the feeding mechanism and the bent steel bar can cause the gear to be impacted and bounced, the invention provides the double-speed steel bar straightening cutter which can avoid the impact of the steel bar on the gear, greatly prolong the service life of a speed change gear train and ensure the stable operation of equipment.
The technical scheme is as follows: a double-speed steel bar straightening and cutting machine comprises a feeding mechanism, a straightening mechanism, a traction mechanism, a cutting mechanism, a material receiving rack and a length fixing mechanism, wherein a working channel for a steel bar to pass through is formed between the mechanisms; the feeding mechanism comprises a feeding pair roller, the traction mechanism comprises a traction pair roller, the feeding pair roller and the traction pair roller are synchronously driven through a chain, and the feeding mechanism further comprises a gear speed change mechanism, and is characterized in that: the feeding mechanism, the straightening mechanism, the traction mechanism, the fixed-length mechanism and the cutting mechanism are sequentially arranged on the table top of the frame side by side, and the material receiving frame is arranged on the outer side of the frame and is used for providing a walking track for the cut steel bars; the traction mechanism further comprises a traction motor, the traction motor is installed in the frame, the traction motor is connected with the power input end of the gear speed change mechanism, and the power output end of the gear speed change mechanism is connected with the power input end of the traction counter roller.
It is further characterized by:
the traction mechanism and the gear speed change mechanism are jointly arranged in a first gear box body, and the first gear box body is arranged on a table top of the frame; the traction mechanism comprises an upper press roll shaft I and a lower press roll shaft I which are parallel to each other, and the upper press roll shaft I and the lower press roll shaft I are both rotatably arranged in the gear box body I; an upper press roller I is sleeved at the front end of the upper press roller I, which penetrates out of the gear box body I, and a transmission gear I is fixed at the rear end of the upper press roller I; the front end of the first lower pressing roller shaft penetrates out of the first gear box body and is sleeved with a first lower pressing roller matched with the first upper pressing roller, a second transmission gear meshed with the first transmission gear is fixed on the first lower pressing roller shaft, and a large gear is fixed on the first lower pressing roller shaft positioned at the rear side of the second transmission gear; the gear speed change mechanism comprises a three gear shaft, an input shaft and a shifting fork shaft, wherein the three gear shaft and the input shaft are both rotatably arranged in a first gear box body, and the shifting fork shaft can be slidably arranged in the first gear box body back and forth and can be locked by a star-shaped handle; a carrier pinion, a pinion and a carrier bull gear are fixedly arranged on the three gear shafts from front to back in sequence, and the pinion is meshed with the bull gear; the input shaft is sleeved with a duplex sliding gear, a guide key matched with the duplex sliding gear is arranged on the input shaft along the axial direction of the input shaft, a gear with smaller diameter in the duplex sliding gear can be meshed with the carrier pinion, and a gear with larger diameter in the duplex sliding gear can be meshed with the carrier pinion; the rear end of the input shaft penetrates out of the first gear box body and is sleeved with a large belt pulley, the output shaft of the traction motor is sleeved with a small belt pulley, and the large belt pulley and the small belt pulley are driven by a V-belt; and a shifting fork sliding block is fixed on the shifting fork shaft and is clamped with the duplex sliding gear to shift the duplex sliding gear to move on the input shaft.
The feeding mechanism is arranged in a second gear box body, and the second gear box body is arranged on the table top of the rack; the feeding mechanism comprises an upper pressing roll shaft II and a lower pressing roll shaft II, and the upper pressing roll shaft II and the lower pressing roll shaft II are both rotatably arranged in the gear box body II; an upper press roller II is sleeved at the front end of the upper press roller shaft II, which penetrates out of the gear box body II, and a transmission gear III is fixed at the rear end of the upper press roller shaft II; the front end of the lower pressing roller shaft II penetrates out of the gear box body II and is sleeved with a lower pressing roller II matched with the upper pressing roller II, and a transmission gear IV meshed with the transmission gear III is fixed on the lower pressing roller shaft II; the rear end of the first pressing roller shaft penetrates out of the first gear box body and is sleeved with a first sprocket, the rear end of the second pressing roller shaft penetrates out of the second gear box body and is sleeved with a second sprocket, and the first sprocket is connected with the second sprocket through a chain.
The traction mechanism and the feeding mechanism also comprise an upper press roller adjusting mechanism, and the upper press roller adjusting mechanism comprises a pressure spring, a screw rod and a shoulder pole spring; the first upper compression roller shaft and the second upper compression roller shaft are respectively and rotatably arranged in the first gear box body and the second gear box body through upper bearing blocks, the upper bearing blocks can be embedded on front side plates of the first gear box body and the second gear box body in a vertically sliding manner, and the pressure springs are respectively arranged between the bottom surfaces of the upper bearing blocks and the first gear box body and between the bottom surfaces of the upper bearing blocks and the second gear box body; the screw rod is respectively installed on the top surfaces of the first gear box body and the second gear box body, a hand wheel is fixedly connected to the upper end of the screw rod, and the lower end of the screw rod is used for propping the shoulder pole spring to enable the shoulder pole spring to downwards compress the upper bearing seat.
The straightening mechanism comprises a straightening motor and a straightening frame, the straightening motor is arranged in the frame, two end shafts of the straightening frame are respectively and rotatably arranged on bearing seats positioned on the table top of the frame, one end shaft of the straightening frame is sleeved with a belt wheel I, an output shaft of the straightening motor is sleeved with a belt wheel II, and the belt wheel I and the belt wheel II are driven by a triangular belt; curve rollers for straightening the steel bars are respectively and crosswise arranged on the upper side and the lower side of the inside of the straightening frame, and are obliquely arranged.
The length-fixing mechanism comprises an upper pressing roller III and a lower pressing roller III which are matched with each other, the upper pressing roller III and the lower pressing roller III are respectively rotatably arranged on the side part of the gear box body I through respective shafts and supports, the upper pressing roller III is a metering roller with reticulate patterns processed on the surface, an encoder is sleeved on the shaft of the metering roller, and the encoder is connected with the controller and used for automatically calculating the length of a reinforcing steel bar; the lower press roller III is a roller with triangular grooves machined on the surface.
The cutting mechanism comprises a supporting frame, a fixed cutter, a blade and a hydraulic cylinder, wherein the supporting frame is arranged on a table top of the frame, the fixed cutter is arranged on the supporting frame, a through hole for a steel bar to pass through is formed in the core of the fixed cutter, the hydraulic cylinder is fixedly arranged on the rear side of the supporting frame and connected with the controller through an electromagnetic reversing valve, the blade is fixed on a piston rod of the hydraulic cylinder, the blade is positioned at an outlet end of the through hole, and the blade can cut off the steel bar in the through hole when the piston rod of the hydraulic cylinder stretches out.
The support frame includes the extension board of both sides, upper and lower parallel mount in both sides polished rod axle and can follow between the extension board polished rod axle gliding travelling car, extension board fixed mounting in on the mesa of frame, fixed knife fixed mounting in travelling car's front side, hydraulic cylinder fixed mounting in travelling car's rear side, and its piston rod pass forward behind the travelling car with the blade rigid coupling, travelling car with connect through long extension spring between the gear box casing one.
The entrance of the working channel is provided with a horn tube coaxial with the working channel, the horn tube is rotatably arranged on a fixing frame, the fixing frame is arranged on a table top of the frame, and the large opening end of the horn tube faces away from the feeding mechanism.
The traction motor and the straightening motor are respectively arranged on a motor underframe through a motor bottom plate, the motor underframe is fixed on the frame, and the motor bottom plate is connected with the motor underframe through an adjusting stud.
The beneficial effects of the invention are as follows:
the invention relates to a steel bar straightening and cutting machine, wherein a gear speed changing mechanism is arranged on a traction mechanism, the gear speed changing mechanism is driven by a traction motor, the traction speed of the traction mechanism is regulated by the gear speed changing mechanism, and the feeding speed of a feeding mechanism can be synchronous with the traction speed through a chain.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of the traction mechanism and gear change mechanism;
FIG. 4 is an expanded cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 6 is a front view of the cutoff mechanism;
fig. 7 is a top view of fig. 6.
Reference numerals:
1-a frame; 2-a first gear case; 3-star-shaped handles; 4-limiting rings; 5-a second gear case; 6-sprocket one; 7-a second sprocket; 8-an upper bearing seat; 9-a horn tube; 91-a fixing frame; 101-a motor bottom plate; 102-a motor chassis;
10-a feeding mechanism; 11-a second upper press roll shaft; 111-upper press roller II; 112-transmission gear three; 12-pressing the second roller shaft; 121-pressing down the second roller; 122-transmission gear four;
20-straightening mechanism; 21-straightening the motor; 22-straightening frames; 23-bearing seats; 24-pulley one; 25-a belt wheel II; 26-curve roller;
30-a traction mechanism; 31-upper press roll shaft I; 311-pressing roller I; 312-first transmission gear; 32-pressing roller shaft I; 321-pressing down the roller I; 322-a second transmission gear; 323-gearwheel; 33-traction motor;
40-a fixed length mechanism; 41-upper press roller III; 42-pressing down the third roller; 43-a bracket;
50-a cutting mechanism; 51-fixed cutter; 511-a through hole; 52-blade; 53-a hydraulic cylinder; 54-supporting plates; 55-a light bar shaft; 56-a mobile trolley;
60-gear change mechanism; 61-a three gear shaft; 611-a carrier pinion; 612-pinion; 613-a carrier gear; 62-an input shaft; 621-duplex slipping gears; 622—large pulleys; 623-a guide key; 63-a fork shaft; 631-a fork slide;
71-screw rod; 72-shoulder pole springs; 73-hand wheel.
Detailed Description
Referring to fig. 1 to 7, the dual-speed bar straightening and cutting machine of the present invention comprises a feeding mechanism 10, a straightening mechanism 20, a traction mechanism 30, a length fixing mechanism 40, a cutting mechanism 50 and a receiving rack (not shown in fig. 1 to 7) positioned outside a frame 1, wherein the feeding mechanism 10, the straightening mechanism 20, the traction mechanism 30, the length fixing mechanism 40 and the cutting mechanism 50 are sequentially arranged side by side on a table surface of the frame, a working channel for passing bars is formed between the mechanisms, and the receiving rack is used for providing a running track for the cut bars; the feeding mechanism 10 comprises a feeding pair roller, namely an upper pressing roller II 111 and a lower pressing roller II 121, the traction mechanism 30 comprises a traction pair roller, namely an upper pressing roller I311 and a lower pressing roller I321, the feeding pair roller and the traction pair roller are synchronously driven by a chain, the traction mechanism 30 further comprises a traction motor 33, the traction motor 33 is arranged in the frame 1, the traction motor 33 is connected with the power input end of the gear speed change mechanism 60, and the power output end of the gear speed change mechanism 60 is connected with the power input end of the traction pair roller.
Referring to fig. 3 and 4, the traction mechanism 30 and the gear change mechanism 60 are jointly installed in a gear housing one 2, and the gear housing one 2 is installed on a table top of the frame 1; the traction mechanism 30 comprises an upper roller shaft I31 and a lower roller shaft I32 which are parallel to each other, and the upper roller shaft I31 and the lower roller shaft I32 are rotatably arranged in the gear box body I2; an upper press roller I311 is sleeved on the front end of the upper press roller I31, which penetrates out of the gear box I2, and a transmission gear I312 is fixed on the rear end of the upper press roller I31; the front end of the first lower pressing roller shaft 32 passes through the first gear box body 2 and is sleeved with a first lower pressing roller 321 matched with the first upper pressing roller 311, a second transmission gear 322 meshed with the first transmission gear 312 is fixed on the first lower pressing roller shaft 32, and a large gear 323 is fixed on the first lower pressing roller shaft 32 positioned at the rear side of the second transmission gear 322; the gear speed change mechanism 60 comprises a three gear shaft 61, an input shaft 62 and a shifting fork shaft 63, wherein the three gear shaft 61 and the input shaft 62 are rotatably arranged in a gear box body I2, and the shifting fork shaft 63 is slidably arranged in the gear box body I2 back and forth through a sliding sleeve and can be locked by a star-shaped handle 3; the three gear shaft 61 is fixedly provided with a carrier pinion 611, a pinion 612 and a carrier bull gear 613 from front to back in sequence, and the pinion 611 is meshed with the bull gear 323; the input shaft 62 is sleeved with a duplex sliding gear 621, a guide key 623 matched with the duplex sliding gear 621 is arranged on the input shaft 62 along the axial direction of the input shaft, a gear with smaller diameter in the duplex sliding gear 621 can be meshed with the carrier large gear 613, and a gear with larger diameter in the duplex sliding gear 621 can be meshed with the carrier small gear 611; the rear end of the input shaft 62 penetrates out of the gear box body I2 and is sleeved with a large belt pulley 622, the output shaft of the traction motor 33 is sleeved with a small belt pulley, and the large belt pulley 622 is connected with the small belt pulley through a synchronous belt; a shifting fork slide block 631 is fixed on the shifting fork shaft 63, and the shifting fork slide block 631 is clamped into a groove of the duplex sliding gear 621 to shift the duplex sliding gear 621 to move on the input shaft 62. Before shifting, firstly loosening the star-shaped handle, then pushing and pulling the shifting fork shaft, enabling the shifting fork sliding block to stir the duplex sliding gear to move along the guide key on the input shaft, when the duplex sliding gear is located at the position indicated by the dotted line in fig. 4, the traction speed of the traction mechanism on the steel bar is low, when the duplex sliding gear is located at the position indicated by the solid line in fig. 4, the traction speed of the traction mechanism on the steel bar is high, and after the shifting fork shaft is adjusted in place, screwing the star-shaped handle to enable the star-shaped handle to prop against the shifting fork shaft, so that the shifting fork shaft is prevented from freely sliding. If the gear shifting can not be in place in time, the gear shifting can be smoothly performed by slightly rotating the large belt wheel and pushing or pulling the shifting fork shaft. The duplex sliding gears must be put in place during shifting, and preferably, a limit ring 4 can be installed on the shifting fork shaft according to the moving distance so as to limit the moving distance of the shifting fork shaft 63. The traction motor is not shiftable in the case of rotation, otherwise the change gear would be damaged.
Referring to fig. 5, the feeding mechanism 10 is installed in a second gear case 5, and the second gear case 5 is installed on the table top of the frame 1; the feeding mechanism 10 comprises an upper press roller shaft II 11 and a lower press roller shaft II 12, and the upper press roller shaft II 11 and the lower press roller shaft II 12 are both rotatably arranged in the gear box body II 5; the front end of the upper press roller shaft II 11 penetrates out of the gear box body II 5 and is sleeved with an upper press roller II 111, and the rear end of the upper press roller shaft II 11 is fixed with a transmission gear III 112; the front end of the second lower press roll shaft 12 penetrates out of the second gear box body 5 and is sleeved with a second lower press roll 121 matched with the second upper press roll 111; a transmission gear IV 122 meshed with the transmission gear III 112 is fixed on the lower roll shaft II 12; the rear end of the lower pressing roller shaft I32 penetrates out of the gear case I2 and is sleeved with a sprocket I6, the rear end of the lower pressing roller shaft II 12 penetrates out of the gear case II 5 and is sleeved with a sprocket II 7, and the sprocket I6 is connected with the sprocket II 7 through a chain. The design is simple in structure, and the synchronization of the feeding mechanism and the traction mechanism can be realized.
Referring to fig. 4 and 5, the traction mechanism 30 and the feeding mechanism 10 each further include an upper press roller adjusting mechanism, and the upper press roller adjusting mechanism includes a pressure spring, a screw rod 71 and a shoulder pole spring 72; the upper press roller shaft I31 and the upper press roller shaft II 11 are respectively rotatably arranged in an upper bearing seat 8, the upper bearing seat 8 can be embedded on the front side plates of the gear box body I2 and the gear box body II 5 in a vertically sliding manner, and a pressure spring is respectively arranged between the bottom surface of the upper bearing seat 8 and the gear box body I2 and the gear box body II 5; screw rods 71 are respectively arranged on the top surfaces of the first gear box body 2 and the second gear box body 5, a hand wheel 73 is fixedly connected to the upper end of the screw rods 71, and the lower end of the screw rods is used for pushing and flattening the shoulder pole springs 72 so that the shoulder pole springs 72 downwards press the upper bearing seat 8. When the steel bars are strung before straightening, only the hand wheel is rotated, the pressure of the shoulder pole spring to the upper bearing seat is removed, the upper bearing seat is lifted upwards slowly under the action of the pressure spring, the upper pressure roller and the lower pressure roller form an opening, after the steel bars are strung, the hand wheel is rotated, the shoulder pole spring presses the upper bearing seat downwards under the top pressing of the screw rod, and the upper pressure roller and the lower pressure roller press the steel bars and convey the steel bars forwards. By the design, the threading is more convenient and labor-saving. When the screw rod adjusts the pressure, the screw rod is not suitable to be pressed too tightly, otherwise, the steel bar can be flattened or scratched, and only the upper pressing roller and the lower pressing roller can press the steel bar to be fed forward. In order to facilitate conveying of reinforcing steel bars with different sizes, R grooves with different sizes are formed in the upper pressing roller I, the lower pressing roller I, the upper pressing roller II and the lower pressing roller II, and the reinforcing steel bars are prevented from being deviated.
Referring to fig. 1 and 2, the straightening mechanism 20 comprises a straightening motor 21 and a straightening frame 22, the straightening motor 21 is arranged in the frame 1, two end shafts of the straightening frame 22 are respectively and rotatably arranged on bearing seats 23 positioned on the table top of the frame 1, one end shaft of the straightening frame 22 is sleeved with a belt wheel I24, an output shaft of the straightening motor 21 is sleeved with a belt wheel II 25, and the belt wheel I24 and the belt wheel II 25 are driven by a V-belt; the upper and lower sides inside the straightening frame 22 are respectively and crosswise provided with a curve roller 26 for straightening the reinforcing steel bars, and the curve roller 26 is obliquely arranged. In the embodiment shown in fig. 1, three curve rollers are respectively installed on the upper side and the lower side in the straightening frame, wherein one curve roller is used for centering during straightening, the other four curve rollers can be respectively used for adjusting different curves during straightening reinforcing steel bars made of different materials, and the curve rollers are installed on the upper side plate and the lower side plate of the straightening frame through screw rods, so that the reduction of the curve rollers can be adjusted. The straightening principle is that when the straightening frame rotates at a high speed, the curve roller rotates around the steel bar at a high speed, and because the curve roller is obliquely arranged, namely an angle exists between the axis of the curve roller and the steel bar, the curve roller rotating around the steel bar at a high speed straightens the steel bar on one hand and feeds the steel bar to the traction mechanism on the other hand.
Referring to fig. 1 and 2, the bar straightening and cutting machine of the present invention further includes a controller (not shown in fig. 1 to 7), the fixed length mechanism 40 includes an upper press roller three 41 and a lower press roller three 42 that are matched with each other, the upper press roller three 41 and the lower press roller three 42 are rotatably mounted at the side of the gear case one 2 through respective shafts and brackets 43, the upper press roller three 41 is a metering roller with a reticulate pattern machined on the surface, an encoder is sleeved on the shaft of the metering roller, and the encoder is connected with the controller for automatically calculating the length of the bar; the lower press roller III 42 is a roller with triangular grooves machined on the surface. The encoder sends a signal to the controller for each rotation of the metering roller, and the length is automatically metered; the upper press roll surface is processed with reticulate patterns, and the lower press roll surface is processed with triangular grooves, so that the combination of the press rolls with the same grooves can ensure that the steel bars are not easy to slip and deviate when walking.
Referring to fig. 6 and 7, the cutting mechanism 50 includes a support frame, a fixed knife 51, a knife 52 and a hydraulic cylinder 53, the support frame includes two side support plates 54, a polish rod shaft 55 mounted in parallel between the two side support plates and a moving trolley 56 capable of sliding along the polish rod shaft 55, the support plate 54 is fixedly mounted on the table top of the frame 1, the fixed knife 51 is fixedly mounted on the front side of the moving trolley 56, a through hole 511 for the steel bar to pass through is processed in the core of the fixed knife 51, the hydraulic cylinder 53 is fixedly mounted on the rear side of the moving trolley 56 and is connected with the controller through an electromagnetic directional valve, a piston rod of the hydraulic cylinder 53 passes through the moving trolley 56 forward and is fixedly connected with the knife 52, the knife 52 is positioned at the outlet end of the through hole 511 of the fixed knife 51, a gap of about 0.1mm is preferably reserved between the knife 52 and the fixed knife 51, the knife 52 can break the steel bar in the through hole 511 when the piston rod of the hydraulic cylinder 53 extends, and the moving trolley 56 is connected with the gear box body 2 through a tension spring (not shown in fig. 1 to 7). When the straightened steel bars reach the set fixed length, the controller can control the piston rod of the hydraulic oil cylinder to extend out, and the blade can cut off the steel bars. The action of the hydraulic cylinder is that the controller sends an instruction to the electromagnetic directional valve, the electromagnetic directional valve receives the instruction, the coil is electrified, the electromagnet in the coil is attracted, the valve rod of the directional valve acts instantly, the oil way of the directional valve is opened, the pressure oil is quickly filled into the hydraulic cylinder, the piston rod is impacted by the high-pressure oil and instantaneously stretches forwards, the blade breaks the steel bar, the electromagnetic directional valve is deenergized at one moment, the electromagnet releases the valve rod to seal the oil way, the oil supply to the hydraulic cylinder is stopped, the compression spring sleeved on the piston rod in the oil cylinder is quickly opened by losing the external pressure to quickly push and reset the piston rod, and only a few seconds of time is needed, namely, the shearing action is quickly completed, the speed is extremely fast, and the efficiency is extremely high. The cylinder stretches out from the piston rod to cut off the steel bars and the piston rod retracts to reset, so that the straightened steel bars can prop the movable trolley to walk on the light rod shaft for a certain distance, and the shearing trolley can rapidly retract to the original position for standby under the condition of losing thrust by arranging the long tension spring.
Referring to fig. 1, a horn tube 9 coaxial with the horn tube 9 is arranged at the inlet of the working channel, the horn tube 9 is rotatably mounted on a fixing frame 91 through a bearing, the fixing frame 91 is fixedly mounted on the table top of the frame 1, and the large mouth end of the horn tube 9 faces away from the feeding mechanism 10. Before the steel bars are ready to be straightened, the bundled wires are pulled out for one circle, and are manually straightened and then are strung into the horn tube, the bundled wires are rotated for 360 degrees once each circle, and the rotated wires can simultaneously rotate along with the wires except for the large and small shrink rings when passing through the horn tube, so that the knotting and breaking of the wires can be prevented and avoided.
Referring to fig. 1, the traction motor 33 and the straightening motor 21 are respectively mounted on a motor chassis 102 through a motor bottom plate 101, the motor chassis 102 is fixed on the frame 1, and the motor bottom plate 101 and the motor chassis 102 are connected through adjusting studs. By the design, the heights of the traction motor and the straightening motor can be adjusted, so that the tightness of the belt can be adjusted.
The machine is simple and convenient to operate, firstly, a bundle of wires is uncoiled and then pulled out to be about three meters in length, the heads of the wires are straightened and not bent by a wrench, the wires are strung into an R groove of a feeding press roller from a horn pipe, then strung into a curve roller of a straightening mechanism, the curve of the curve roller is adjusted, the wires are strung into an R groove of a traction press roller, strung into a triangular groove of a lower press roller three of a length fixing mechanism, strung into a through hole of a cutter, the pressing force of a screw rod at the tops of the feeding mechanism and the traction mechanism is adjusted, and then the screw rod is locked, so that the machine can be started.
Claims (9)
1. A double-speed steel bar straightening and cutting machine comprises a feeding mechanism, a straightening mechanism, a traction mechanism, a cutting mechanism, a material receiving rack and a length fixing mechanism, wherein a working channel for a steel bar to pass through is formed between the mechanisms; the feeding mechanism comprises a feeding pair roller, the traction mechanism comprises a traction pair roller, the feeding pair roller and the traction pair roller are synchronously driven through a chain, and the feeding mechanism further comprises a gear speed change mechanism, and is characterized in that: the feeding mechanism, the straightening mechanism, the traction mechanism, the fixed-length mechanism and the cutting mechanism are sequentially arranged on the table top of the frame side by side, and the material receiving frame is arranged on the outer side of the frame and is used for providing a walking track for the cut steel bars; the traction mechanism further comprises a traction motor, the traction motor is arranged in the frame, the traction motor is connected with the power input end of the gear speed change mechanism, and the power output end of the gear speed change mechanism is connected with the power input end of the traction counter roller;
the traction mechanism and the gear speed change mechanism are jointly arranged in a first gear box body, and the first gear box body is arranged on a table top of the frame; the traction mechanism comprises an upper press roll shaft I and a lower press roll shaft I which are parallel to each other, and the upper press roll shaft I and the lower press roll shaft I are both rotatably arranged in the gear box body I; an upper press roller I is sleeved at the front end of the upper press roller I, which penetrates out of the gear box body I, and a transmission gear I is fixed at the rear end of the upper press roller I; the front end of the first lower pressing roller shaft penetrates out of the first gear box body and is sleeved with a first lower pressing roller matched with the first upper pressing roller, a second transmission gear meshed with the first transmission gear is fixed on the first lower pressing roller shaft, and a large gear is fixed on the first lower pressing roller shaft positioned at the rear side of the second transmission gear; the gear speed change mechanism comprises a three gear shaft, an input shaft and a shifting fork shaft, wherein the three gear shaft and the input shaft are both rotatably arranged in a first gear box body, and the shifting fork shaft can be slidably arranged in the first gear box body back and forth and can be locked by a star-shaped handle; a carrier pinion, a pinion and a carrier bull gear are fixedly arranged on the three gear shafts from front to back in sequence, and the pinion is meshed with the bull gear; the input shaft is sleeved with a duplex sliding gear, a guide key matched with the duplex sliding gear is arranged on the input shaft along the axial direction of the input shaft, a gear with smaller diameter in the duplex sliding gear can be meshed with the carrier pinion, and a gear with larger diameter in the duplex sliding gear can be meshed with the carrier pinion; the rear end of the input shaft penetrates out of the first gear box body and is sleeved with a large belt pulley, the output shaft of the traction motor is sleeved with a small belt pulley, and the large belt pulley and the small belt pulley are driven by a V-belt; and a shifting fork sliding block is fixed on the shifting fork shaft and is clamped with the duplex sliding gear to shift the duplex sliding gear to move on the input shaft.
2. The dual-speed bar straightening cutter as claimed in claim 1, characterized in that: the feeding mechanism is arranged in a second gear box body, and the second gear box body is arranged on the table top of the rack; the feeding mechanism comprises an upper pressing roll shaft II and a lower pressing roll shaft II, and the upper pressing roll shaft II and the lower pressing roll shaft II are both rotatably arranged in the gear box body II; an upper press roller II is sleeved at the front end of the upper press roller shaft II, which penetrates out of the gear box body II, and a transmission gear III is fixed at the rear end of the upper press roller shaft II; the front end of the lower pressing roller shaft II penetrates out of the gear box body II and is sleeved with a lower pressing roller II matched with the upper pressing roller II, and a transmission gear IV meshed with the transmission gear III is fixed on the lower pressing roller shaft II; the rear end of the first pressing roller shaft penetrates out of the first gear box body and is sleeved with a first sprocket, the rear end of the second pressing roller shaft penetrates out of the second gear box body and is sleeved with a second sprocket, and the first sprocket is connected with the second sprocket through a chain.
3. The dual-speed bar straightening cutter as claimed in claim 2, characterized in that: the traction mechanism and the feeding mechanism also comprise an upper press roller adjusting mechanism, and the upper press roller adjusting mechanism comprises a pressure spring, a screw rod and a shoulder pole spring; the first upper compression roller shaft and the second upper compression roller shaft are respectively and rotatably arranged in the first gear box body and the second gear box body through upper bearing blocks, the upper bearing blocks can be embedded on front side plates of the first gear box body and the second gear box body in a vertically sliding manner, and the pressure springs are respectively arranged between the bottom surfaces of the upper bearing blocks and the first gear box body and between the bottom surfaces of the upper bearing blocks and the second gear box body; the screw rod is respectively installed on the top surfaces of the first gear box body and the second gear box body, a hand wheel is fixedly connected to the upper end of the screw rod, and the lower end of the screw rod is used for propping the shoulder pole spring to enable the shoulder pole spring to downwards compress the upper bearing seat.
4. The dual-speed bar straightening cutter as claimed in claim 1, characterized in that: the straightening mechanism comprises a straightening motor and a straightening frame, the straightening motor is arranged in the frame, two end shafts of the straightening frame are respectively and rotatably arranged on bearing seats positioned on the table top of the frame, one end shaft of the straightening frame is sleeved with a belt wheel I, an output shaft of the straightening motor is sleeved with a belt wheel II, and the belt wheel I and the belt wheel II are driven by a triangular belt; curve rollers for straightening the steel bars are respectively and crosswise arranged on the upper side and the lower side of the inside of the straightening frame, and are obliquely arranged.
5. The dual-speed bar straightening cutter as claimed in claim 1, characterized in that: the length-fixing mechanism comprises an upper pressing roller III and a lower pressing roller III which are matched with each other, the upper pressing roller III and the lower pressing roller III are respectively rotatably arranged on the side part of the gear box body I through respective shafts and supports, the upper pressing roller III is a metering roller with reticulate patterns processed on the surface, an encoder is sleeved on the shaft of the metering roller, and the encoder is connected with the controller and used for automatically calculating the length of a reinforcing steel bar; the lower press roller III is a roller with triangular grooves machined on the surface.
6. The dual-speed bar straightening cutter as described in claim 5, further comprising: the cutting mechanism comprises a supporting frame, a fixed cutter, a blade and a hydraulic cylinder, wherein the supporting frame is arranged on a table top of the frame, the fixed cutter is arranged on the supporting frame, a through hole for a steel bar to pass through is formed in the core of the fixed cutter, the hydraulic cylinder is fixedly arranged on the rear side of the supporting frame and connected with the controller through an electromagnetic reversing valve, the blade is fixed on a piston rod of the hydraulic cylinder, the blade is positioned at an outlet end of the through hole, and the blade can cut off the steel bar in the through hole when the piston rod of the hydraulic cylinder stretches out.
7. The dual-speed bar straightening cutter as described in claim 6, further comprising: the support frame includes the extension board of both sides, upper and lower parallel mount in both sides polished rod axle and can follow between the extension board polished rod axle gliding travelling car, extension board fixed mounting in on the mesa of frame, fixed knife fixed mounting in travelling car's front side, hydraulic cylinder fixed mounting in travelling car's rear side, and its piston rod pass forward behind the travelling car with the blade rigid coupling, travelling car with connect through long extension spring between the gear box casing one.
8. The dual-speed bar straightening cutter as claimed in claim 1, characterized in that: the entrance of the working channel is provided with a horn tube coaxial with the working channel, the horn tube is rotatably arranged on a fixing frame, the fixing frame is arranged on a table top of the frame, and the large opening end of the horn tube faces away from the feeding mechanism.
9. The dual-speed bar straightening cutter as described in claim 4, wherein: the traction motor and the straightening motor are respectively arranged on a motor underframe through a motor bottom plate, the motor underframe is fixed on the frame, and the motor bottom plate is connected with the motor underframe through an adjusting stud.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811372329.5A CN109175155B (en) | 2018-11-19 | 2018-11-19 | Double-speed steel bar straightening and cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372329.5A CN109175155B (en) | 2018-11-19 | 2018-11-19 | Double-speed steel bar straightening and cutting machine |
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| CN109175155A CN109175155A (en) | 2019-01-11 |
| CN109175155B true CN109175155B (en) | 2024-01-19 |
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