CN112388060A - High-speed intelligent band sawing machine - Google Patents
High-speed intelligent band sawing machine Download PDFInfo
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- CN112388060A CN112388060A CN202011170410.2A CN202011170410A CN112388060A CN 112388060 A CN112388060 A CN 112388060A CN 202011170410 A CN202011170410 A CN 202011170410A CN 112388060 A CN112388060 A CN 112388060A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/04—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a high-speed intelligent band sawing machine which comprises a bed, a clamping device and a control device, wherein the bed is used for placing and clamping transportation materials; the saw frame is arranged above the bed, a driving wheel and a driven wheel which are driven by a main servo motor are rotatably connected to the saw frame, and a saw belt is sleeved on the driving wheel and the driven wheel; the tension detection device is used for detecting and adjusting the tension of the saw belt; the saw back pressure feedback device is used for detecting the back pressure of the saw belt; and the servo lifting driving system controls the lifting speed of the saw frame through the pressure at the back of the saw band and the feedback value of the output torque of the main servo motor, and controls the rotating speed of the main servo motor through the feedback value of the lifting speed of the saw frame. The feeding speed is controlled through double feedback, and the sawing speed is adjusted through the feeding speed, so that closed-loop vector control is formed, the sawing efficiency is optimized, and the service life of the saw belt is prolonged.
Description
Technical Field
The invention relates to the technical field of sawing machines, in particular to a high-speed intelligent band sawing machine.
Background
The band sawing machine generally comprises a base, a bed and a saw frame, wherein the bed is arranged on the base and used for placing, transporting and clamping materials to be cut; the driving wheel rotates to drive the saw belt to circularly move, the saw frame descends during sawing, materials are vertically and downwards cut, the bottom of the saw blade moves horizontally (namely the sawing direction) and vertically and downwards (namely the feeding direction), and the sawing efficiency and the service life of the saw belt can be optimized only when the sawing speed and the feeding speed are reasonably configured; on the other hand, because parameters such as material, shape and hardness of the material greatly influence the sawing speed and the feeding speed, especially the contact surfaces of a plurality of materials and the saw belt can change in the sawing process, the resistance of the saw belt can also change at any time, only the sawing speed and the feeding speed can be adjusted in time to efficiently saw high-precision materials, and meanwhile, the service life of the saw belt is ensured, so that the adjustment of the sawing speed and the feeding speed is controlled automatically at any time in the sawing process, which is particularly important.
The existing automatic band sawing machine generally feeds back a feeding hydraulic device and a tensioning hydraulic device according to the output torque and the tensioning force of a main motor so as to realize the adjustment of the feeding speed and the tensioning force in the sawing process, but the sawing speed cannot be controlled, so that the sawing speed cannot be reasonably matched with the feeding speed, the real constant control of the sawing load cannot be achieved, and the service life of a saw band is influenced; on the other hand, the feeding speed is adjusted only by the output torque, namely the horizontal force applied to the saw belt, the vertical pressure applied to the saw belt is not considered, the adjustment parameters are too few, and the feeding speed cannot be optimally controlled.
For example, a chinese patent document discloses a "control method for constant power sawing of a band sawing machine and an intelligent band sawing machine thereof", wherein the publication No. CN105033352B includes a control system, a saw frame system, a feeding system and a clamping mechanism, a rotary encoder is installed on a rotating shaft of a driven saw wheel, and detects the rotating speed of the driven saw wheel in real time; the power sensor detects the feedback current of the frequency converter and transmits the feedback current to the lower computer after passing through the rotary encoder; the lower computer controls the motor to adjust the opening of the feed flow valve through the feed flow valve according to the acquired rotating speed and torque data of the main motor, and changes the lifting speed of a piston rod of the feed oil cylinder; and the lower computer adjusts the pressure of the electro-hydraulic proportional overflow valve through the feedback of the sensor to realize the tension control of the tensioning oil cylinder. The invention controls the lifting speed of the piston rod of the oil cylinder and the tension control of the tension oil cylinder through the rotating speed and torque data and the tension data of the main motor, and has the defects that a control system cannot form a closed loop, the sawing speed cannot be adjusted in time, the real constant power control cannot be achieved, and the service life of a saw belt cannot be optimized.
Disclosure of Invention
The invention provides a high-speed intelligent band sawing machine, which aims to solve the problems that a control system of the band sawing machine in the prior art cannot form a closed loop, the sawing speed cannot be adjusted in time, the adjusting parameters of the feeding speed are too few, and the service life of a saw band cannot be optimized.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high speed smart band sawing machine comprising:
the bed is used for placing and clamping the transported materials;
the saw frame is arranged above the bed, a driving wheel and a driven wheel which are driven by a main motor are rotatably connected to the saw frame, and saw belts are sleeved on the driving wheel and the driven wheel;
the tension detection device is used for detecting and adjusting the tension of the saw belt;
the saw back pressure feedback device is used for detecting the back pressure of the saw belt;
and the servo lifting driving system controls the lifting speed of the saw frame through the pressure at the back of the saw band and the feedback value of the output torque of the main motor, and controls the rotating speed of the main motor through the feedback value of the lifting speed of the saw frame.
When the saw belt cuts materials with inconsistent parameters such as cross section width or hardness, the contact surface of the saw belt and the materials can change in the sawing process. Taking round steel as an example, the cross section width of the round steel is firstly increased and then decreased from top to bottom, and the contact surface of the saw belt and the round steel is also firstly increased and then decreased, so that the upward pressure fed back by the steel pipe on the saw belt can also generate corresponding change; meanwhile, a main motor driving the driving wheel to rotate feeds an output torque back to the servo lifting driving system through an encoder, when the output torque is increased, the rotating speed of the servo motor is reduced, the feeding speed is reduced, and otherwise, the feeding speed is increased; compared with the single feedback control only through the output torque in the prior art, the double-feedback control saw frame has the characteristics that the double-feedback control saw frame lifting speed, namely the feeding speed, is formed through the output torque and the saw back pressure, meanwhile, when the feeding speed is changed, the rotating speed of the main motor is correspondingly changed, closed-loop vector control is formed, the sawing speed and the feeding speed are reasonably configured, the sawing efficiency is high, and the service life of the saw band is greatly prolonged. The servo motor is used for driving the ball screw to rotate to drive the saw frame to lift, the adjusting precision is high, the rapid adjustment is realized, meanwhile, the balance cylinder systems are arranged on the two sides of the saw frame, the self weight of the saw frame is offset by oil pressure, and meanwhile, the left balance and the right balance of the saw frame are conveniently adjusted.
Preferably, the saw belt device further comprises a pulse chip breaking device which enables the saw belt to vibrate up and down, a point pressing piece is arranged on the pulse chip breaking device and used for intermittently point pressing the back of the saw belt, and a saw back pressure feedback device is arranged on the point pressing piece.
Due to the characteristics of materials, longer cutting chips can be generated when certain materials are cut, and when the cutting chips are too long, the cutting precision and the cutting efficiency can be influenced; meanwhile, the press part is continuously contacted with the back of the saw belt, a saw back pressure feedback device, such as a pressure sensor and the like, is integrated on one side of the press part contacted with the back of the saw belt, so that the pressure value borne by the saw back can be timely fed back to the lifting servo motor, and the chip breaking function and the feedback function are integrated in the same mechanism.
Preferably, the pressing piece is elastically hinged to the pulse chip breaking device, the pulse chip breaking device comprises a shifting wheel driven by a servo motor, a shifting surface is arranged on one side, close to the pressing piece, of the shifting wheel along the circumferential direction, the shifting surface is attached to the surface of the pressing piece, and the pressing piece is driven to vibrate by the shifting surface along with the rotation of the shifting wheel.
The servo motor drives the dial wheel to rotate and control the rotating speed, the dial surface is arranged in a fluctuating way along the circumferential direction and comprises a pressing part and an uplifting part which are arranged at intervals, the dial surface is abutted against the outer surface of the point pressing part, the dial wheel rotates for a certain angle, and when the pressing part (which can be a plane or a convex surface) of the dial surface is attached to the point pressing part, the point pressing part is pressed to the saw band to drive the saw band to press downwards; the poking wheel continues to rotate, the protrusion part of the poking surface is separated from the press part, the press part is lifted under the elastic action, the uplifting part (which can be a concave surface or a plane) of the poking surface is attached to the press part, the press part leaves the saw belt, the saw belt is lifted, and the circular operation is repeated, so that the saw belt vibrates up and down. Further, the one end that the spot pressing piece is close to the thumb wheel is equipped with the pivot, and the cover is equipped with the bearing in the pivot, and the portion of pushing down of stirring face is the plane, and the portion of lifting is the concave surface unanimous with bearing periphery camber, and the bearing is global to be laminated with stirring face, makes spot pressing piece tip vibrate from top to bottom when stirring face drive bearing pivoted, and this structure has avoided the hard contact of thumb wheel with spot pressing piece, reduces the wearing and tearing of thumb wheel and spot pressing piece, increase of service life. Because the material quality and shape influence the saw dust form, servo motor can adjust the rotational speed thereby adjust the chip-breaking frequency according to the material of cutting.
Preferably, the two pulse chip breaking devices are respectively arranged at one end of the saw belt close to the driven wheel and one end of the saw belt close to the driving wheel, the press parts on the two pulse chip breaking devices synchronously press the back of the saw belt in a press mode, and the saw back pressure feedback device is arranged on the press parts at one end of the saw belt close to the driving wheel.
The saw band is characterized in that a pulse chip breaking device and a pressing part are arranged on a loosening section (namely, a section close to a driven wheel) and a tensioning section (namely, a section close to a driving wheel) of the saw band, saw chips are only generated on the tensioning section, so that the device located on the tensioning section plays a chip breaking role, the saw band vibrates up and down under the action of the pressing part, and a set of same device is also arranged on the loosening section, so that the saw band is ensured to vibrate up and down synchronously along the length direction of the saw band, and the saw cutting effect and the service life of the saw band are ensured.
Preferably, the saw band clamping device is arranged on a loose section of the saw band and comprises two guide wheels with different diameters and arranged on two sides of the saw band, a pressing rod is hinged to the saw band clamping device, one end of the pressing rod is driven by a driving device, and the other end of the pressing rod is rotatably connected with one guide wheel.
The saw band is installed at the action wheel and is followed the driving wheel back on the driving wheel, saw band area level, can the downcut for the saw band, need to twist 90 with saw band below section, make the blade perpendicular to material, consequently band sawing machine's relaxation section and tensioning section all need set up guider, the vertical setting of saw band area face between two guider, among the prior art, in order to guarantee the direction effect, be close to the action wheel or set up the leading wheel from one side of driving wheel at guider usually, through set up the leading wheel respectively in order to play the direction in advance and press from both sides tight effect at the saw band both sides. According to the saw band loosening device, the saw band clamping device is arranged on one side, close to the driven wheel, of the guide device of the loosening section, one end of the pressing rod is pushed outwards through the driving device, such as a hydraulic device, the other end of the pressing rod drives the guide wheel to press the guide wheel on the other side, the two guide wheels press the saw band tightly, front and back (perpendicular to the band surface direction) vibration of the loosening section of the saw band is reduced, the saw band is enabled to run more stably, and the machining precision is guaranteed; on the other hand, the linear speeds of the guide wheels on the two sides are the same, but the diameters of the guide wheels on the two sides are not consistent, the rotating speeds of the guide wheels on the two sides are not consistent, and the vibration frequencies of the guide wheels are different, so that resonance formed by the guide wheels on the two sides and the vibration frequency of the saw belt are avoided, the saw belt runs more stably, the machining precision is ensured, the noise is reduced, and the service life of the saw belt is prolonged. Furthermore, the other end of the pressing rod is connected with the guide wheel through the self-aligning bearing, the periphery of the guide wheel is guaranteed to be vertical, the saw band is prevented from deflecting, and the saw cutting effect is guaranteed.
Preferably, the saw belt tensioning device further comprises a steel brush arranged on the saw belt tensioning section, the steel brush comprises two brush wheels and a contact sensing device, the two brush wheels and the contact sensing device are respectively arranged on two sides of the saw belt, the driving device drives the two brush wheels to rotate towards different directions, the brush wheels are connected with the driving device through a universal coupling, the two brush wheels are always attached through elastic pieces, contacts are arranged on the brush wheels, and the contacts are in contact with the contact sensing device when the brush wheels are used up.
The steel brush is used for removing saw dust adhered to the saw belt, the brush wheels are driven to rotate reversely on two sides of the saw belt through the gear transmission structure, the two brush wheels are guaranteed to brush the saw dust in the same direction from two sides, the surfaces of the brush wheels are gradually abraded in the using process, the diameters of the brush wheels are gradually reduced, and the peripheries of the two brush wheels are guaranteed to be always attached in the reducing process through the universal coupling and the elastic piece; on the other hand, the brush wheel is provided with a contact which is synchronously retracted with the brush wheel, when the brush wheel is completely used up, the contact is contacted with the contact sensing device, and a signal is fed back to the control system to remind the user of replacing the brush wheel.
Preferably, the driving wheel is driven by a main motor and is transmitted through a speed reducer, a spindle seat is fixed on an output shaft of the speed reducer, the spindle seat is fixed on the saw frame, a bearing is arranged on the spindle seat, the driving wheel is sleeved on the bearing, and the end part of the output shaft of the speed reducer is fixedly connected with the driving wheel.
The action wheel lug connection of prior art is on the speed reducer output shaft, and the speed reducer output shaft provides the output torque for the action wheel rotates, because the action wheel receives the effort of saw band to it simultaneously, and the load is very big on the speed reducer output shaft, and stress concentration easily produces the cracked problem of speed reducer output shaft at the saw cutting in-process. The end part of the output shaft drives the driving wheel to rotate, the load is transferred and dispersed to the whole saw frame through the arrangement of the main shaft seat, normal operation can be guaranteed only by replacing a bearing which is easy to damage, and the service life of the output shaft of the speed reducer is greatly prolonged.
Preferably, a plurality of detection holes are uniformly distributed in the circumferential direction on the driven wheel, and a photoelectric sensor is arranged on the saw frame corresponding to the detection holes.
The driven wheel is driven by the saw belt to rotate, the driven wheel is required to always keep constant-speed rotation in a normal state, and when the problems of belt breakage or belt clamping and the like occur, the driven wheel does not keep constant-speed motion any more. The rotation state of the driven wheel is monitored in real time by arranging the photoelectric sensor on the saw frame corresponding to the detection hole, when the driven wheel rotates at a constant speed, light emitted by the photoelectric sensor is received by the sensor through the detection hole at a certain frequency, and when the signal frequency received by the sensor fluctuates greatly or disappears, the phenomenon that the saw band is blocked or broken is indicated, the saw stops running, a worker is reminded of replacing the saw band in time, or the saw band is restored to the original state before the saw band is damaged.
Preferably, the bed comprises a feeding belt, a front clamp device and a rear clamp device which are respectively arranged on two sides of the saw belt, the rear clamp device is connected to the bed in a sliding mode along the feeding direction, the front clamp device and the rear clamp device respectively comprise a movable jaw and a micro jaw, the movable jaw and the micro jaw are respectively arranged on two sides of the feeding belt, the movable jaw is connected to the bed in a sliding mode along the direction perpendicular to the feeding direction, and the micro jaw is connected to the bed in a sliding mode along the direction perpendicular to the feeding direction through a micro driving piece.
Preceding clamp device is along pay-off direction motionless, and back clamp device slides along the pay-off direction and sets up, and the pay-off process is as follows: the movable jaw of the front clamping device transversely moves to clamp the front end of a material, the rear clamping device retreats to a certain position according to the required length, the movable jaw of the rear clamping device transversely moves to clamp the rear end of the material, a saw belt downwards penetrates through a saw belt groove to saw and cut excess material at the front end of the material, after cutting is completed, the movable jaw of the front clamping device abduces, the micro-motion jaw transversely abduces for a plurality of millimeters, the rear clamping device clamps the material and forwards pushes the material, the front clamping device clamps the material again, the movable jaw of the rear clamping device transversely abduces, the micro-motion jaw abduces for a plurality of millimeters and retreats to the same position to clamp the material, next sawing is carried out, abducent ensures that the jaw does not rub with the material, the material and the jaw are prevented; on the other hand, the existing front clamping device and the existing rear clamping device are usually arranged on the same side of the saw frame, so that when the rear clamping device feeds forward, the material tail is clamped by the front clamping device, the part can not be cut any more, waste is easily caused, the material tail part can be directly conveyed to the lower side of the saw belt by the rear clamping device through the arrangement that the front clamping device and the rear clamping device are respectively arranged on two sides, and waste of the material tail is avoided. In the embodiment, the micro-motion driving piece is a micro-motion oil cylinder, and the micro-motion oil cylinder is small in size and can be arranged in the micro-motion jaw in a sealing mode as only the micro-motion jaw needs to be driven to retreat by a plurality of millimeters.
Preferably, a first clamping position detection device is arranged on the feeding belt, and a second clamping position detection device and a clamping pressure detection device are arranged on a movable jaw of the rear clamping device.
The first clamping position detection device is used for positioning the position of the rear clamping device along the feeding direction, the second clamping position detection device is used for detecting the size of a workpiece, and the position of the rear clamping device perpendicular to the feeding direction is positioned; the clamping pressure detection device feeds back the clamping pressure of the rear clamping device in time.
Preferably, the thumb wheel comprises an inner thumb wheel and an outer thumb wheel, a thumb surface is arranged on the outer thumb wheel, a slot is formed in the periphery of the inner thumb wheel, the outer thumb wheel is inserted into the slot, a movable plate is arranged at the bottom of the slot and slides in the radial direction of the inner thumb wheel, a pressure spring is abutted in a space at the bottom of the movable plate, one end of the movable plate is connected with one end of a flexible piece, a gear rack mechanism is arranged in the inner thumb wheel, a gear is rotatably connected to the inner thumb wheel, the outer peripheral surface of a rotating shaft of the gear is connected with the other end of the flexible piece, the inner thumb wheel is provided with a chute with an opening at the bottom, the opening is formed in the center of the inner thumb wheel, the rack is connected in the chute in a sliding manner, a mandril is.
When saw cutting, if meet the condition of saw back pressure increase suddenly, the saw area is lifted rapidly, some pressure ejector pin jack-up upwards, from opening part jack-up rack, the rack upwards slides along the spout, drive gear and axis of rotation synchronous rotation, axis of rotation rolling flexible member, the fly leaf is taken out from interior thumb wheel to the flexible member, make originally compress tightly the pressure spring resilience in the fly leaf bottom, thereby it is ejecting from the slot to follow outer thumb wheel, make the face of stirring no longer laminate with the bearing, lift the position of stepping down on the some pressure member, no longer continue to push down the saw area, avoid the saw area to damage when receiving too big momentum, extension saw area life-span. Meanwhile, the saw back pressure feedback device feeds back the servo motor of the pulse chip breaking device to stop rotating.
Therefore, the invention has the following beneficial effects: (1) meanwhile, the feeding speed is controlled according to the double feedback of the saw back pressure and the output torque of the main motor, so that the adjusting parameters are increased, and the feeding speed is more reasonably adjusted; (2) the sawing speed is adjusted along with the change of the feeding speed, and the two speeds are reasonably configured to form closed-loop vector control, improve the sawing efficiency and prolong the service life of the saw belt; (3) the pulse chip breaking device is arranged to break chips at reasonable frequency according to material characteristics, so that hard friction with the press part is avoided, and the saw stops working and avoids when the saw back pressure is too high; (4) the steel brush and the pulse chip breaking device are arranged to form double chip removal, so that the brush wheel can be replaced in time; (5) the saw band clamping device is arranged to realize the pre-guiding function, and simultaneously clamp the loose section of the saw band, so that vibration and resonance are reduced, the processing precision is improved, and the service life of the saw band is prolonged; (6) the clamping device accurately positions the size and the sawing length of the workpiece, and slightly moves to avoid the workpiece from hard friction; (7) the driving wheel is provided with a main shaft seat for dispersing stress, so that the fracture of an output shaft of the speed reducer is avoided; (8) a photoelectric sensor is arranged corresponding to the driven wheel to detect broken belts and blocked belts in time; (9) the band sawing machine is controlled automatically and intelligently, and has high sawing efficiency and high sawing precision.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a rear view of the present invention.
Fig. 3 is a schematic structural view of the pulse chip breaker and the right guide of the present invention.
Fig. 4 is a schematic structural view of the saw band clamping device of the invention. .
FIG. 5 is a schematic structural view of a steel brush according to the present invention.
Fig. 6 is a schematic structural view of the driving wheel of the present invention.
Fig. 7 is a schematic structural view of a dial wheel according to embodiment 1 of the present invention.
Fig. 8 is a schematic structural view of a dial wheel in embodiment 2 of the present invention.
Fig. 9 is a schematic structural view of a dial wheel according to embodiment 4 of the present invention.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1
In the embodiment 1 shown in fig. 1 and 2, a high-speed intelligent band sawing machine comprises a base, a bed and a saw frame 1, wherein the bed is arranged on the base and used for placing and clamping and transporting materials, the bed comprises a feeding belt 6, a front clamping device and a rear clamping device which are respectively arranged on the front side and the rear side of the saw belt, the rear clamping device is arranged on the bed in a sliding manner along a feeding direction, the front clamping device comprises a front movable jaw 63 and a front micro-motion jaw 64 which are respectively arranged on two sides of the feeding belt, the rear clamping device comprises a rear movable jaw 61 and a rear micro-motion jaw 62 which are respectively arranged on two sides of the feeding belt, the bottoms of the rear movable jaw 61 and the rear micro-motion jaw 62 are connected, the front movable jaw 63 and the rear movable jaw 61 are both connected on the bed in a sliding manner along a direction perpendicular to the feeding direction and are driven by an oil cylinder, the front micro-motion jaw 64 and the rear micro-motion jaw 62 are both connected, the micro-motion oil cylinder is arranged in the two micro-motion jaws in a sealing way; the feeding belt 6 is provided with a first magnetic grid ruler connected with the rear clamping device along the feeding direction, the first magnetic grid ruler is used for positioning the front position and the rear position of the rear clamping device, the second magnetic grid ruler is arranged on the rear movable jaw 61 along the clamping direction, the second magnetic grid ruler is used for positioning the clamping position of the rear movable jaw 61 according to the material size, the rear movable jaw 61 is further provided with a clamping pressure detection device, and no material exists when the rear movable jaw 61 moves to the clamping position without detecting the clamping pressure. As shown in fig. 2, a left guide arm 65 is arranged on the back of the saw frame 1, the top of the left guide arm 65 is horizontally arranged on the saw frame 1 in a sliding manner through two guide rails 651, the left guide arm 65 is fixedly connected with the front movable jaw 63 through a connecting rod, a third magnetic grid ruler 652 is horizontally arranged between the guide rails 651, the third magnetic grid ruler 652 is connected with the left guide arm 65 and used for positioning the clamping position of the front movable jaw 63, and a pressing oil cylinder 653 used for pressing the left guide arm onto the guide rail 651 is arranged on the left guide arm to eliminate a gap between the left guide arm and the guide rail.
When transporting the material, preceding clamp device is along the pay-off direction motionless, and back clamp device slides along the pay-off direction and sets up, and the pay-off process is as follows: the movable jaw of the front clamping device transversely moves to clamp the front end of a material, the rear clamping device retreats to a certain position according to the required length and transversely moves to clamp the rear end of the material, the saw belt 14 cuts the excess material at the front end of the material, the movable jaw and the micro jaw of the front clamping device transversely yield for a plurality of millimeters, the rear clamping device clamps the material and forwards pushes the material, the front clamping device clamps the material again and then saw cuts for a certain length, the rear clamping device transversely yields for a plurality of millimeters after saw cutting and retreats to the same position and then clamps, preparation is made for next cutting, yielding ensures that the jaw does not rub with the material, damage to the material and the jaw is avoided, and waste of the tail of the material is avoided.
The saw frame 1 is arranged above the bed, the saw frame 1 is arranged on the base in a lifting mode, the saw frame 1 is driven to lift through a servo lifting driving system, a lifting servo motor 15 drives a ball screw 16 to rotate to drive the saw frame 1 to lift, the adjusting precision is high, rapid adjustment is achieved, meanwhile, a balance cylinder system 17 is arranged on the saw frame, the dead weight of the saw frame is offset through oil pressure, and meanwhile left and right balance of the saw frame can be adjusted conveniently; the saw frame 1 is rotatably connected with a driving wheel 11 and a driven wheel 12, the driving wheel 11 and the driven wheel 12 are sleeved with a saw belt 14 to drive the saw belt 14 to rotate anticlockwise, a tensioning detection device is arranged on the saw frame 1 and comprises a tensioning oil cylinder 13, the driven wheel 12 is horizontally arranged on the saw frame in a sliding mode, the driven wheel 12 is driven by the tensioning oil cylinder 13 after being detected by the tensioning detection device to adjust the distance between the driving wheel 11 and the driven wheel 12 so as to adjust the tensioning force, and an alarm is given when the tensioning force is too large; the front face of the saw frame 1 corresponding to the detection hole 121 of the driven wheel 12 is provided with a photoelectric sensor for monitoring the rotation state of the driven wheel, when the driven wheel rotates at a constant speed, light emitted by the photoelectric sensor is received by the sensor through the detection hole 12 at a certain frequency, when the signal frequency received by the sensor fluctuates greatly or disappears, the belt is blocked or broken, the saw machine stops running, workers are reminded to change the belt in time, or the saw belt is restored to the original state before being damaged, the driven wheel 12 is also provided with a balance weight wheel 122 for increasing the balance weight of the driven wheel, and the weight of the driving wheel 11 and the driven wheel 12 is balanced, so that the stable running of the saw belt; the driving wheel 11 is driven 111 by a main motor and is driven by a speed reducer, as shown in fig. 6, a main shaft seat 115 is fixed on an output shaft of the speed reducer, one end of the main shaft seat 115 is fixed on a saw frame, a driving wheel bearing 112 is arranged outside the main shaft seat 115, the driving wheel 11 is sleeved on the bearing 112, the end part of the output shaft of the speed reducer is fixedly connected with the driving wheel 11 through a flange 113, an end cover 114 is fixed outside the end part of the output shaft of the speed reducer, the end cover 114 is fixedly connected with the flange 113, the end part of the output shaft drives the driving wheel to rotate, the load is transferred and dispersed to the whole saw frame through the arrangement of the main shaft seat, in addition, normal operation can.
As shown in fig. 1, a pulse chip breaking device 3 and a guide device 4 are arranged above a saw band tensioning section on the right side and a saw band loosening section on the left side of a saw frame 1, as shown in fig. 3, the guide device 4 comprises guide plates 421 arranged on two sides of a saw band 14, the pulse chip breaking device 3 is fixed on the guide plates 421, a pressing point 42 is elastically hinged between the two guide plates 421, one end of the pressing point 42 close to the pulse chip breaking device 3 is provided with a rotating shaft, the rotating shaft is sleeved with a pulse bearing 41, the pulse chip breaking device 3 comprises a shifting wheel 32 driven by a pulse servo motor 31, as shown in fig. 7, the bottom surface of the shifting wheel 32 is provided with a shifting surface along the circumferential direction, arc concave surfaces 323 consistent with the peripheral curvature of the pulse bearing 41 are uniformly arranged on the shifting surface at intervals, the pressing point 42 is arranged below the shifting wheel 32, the peripheral surface of the pulse bearing 41 is attached to the shifting surface, a pressure sensor is arranged on the right pressing point 42, the shifting surface drives the, the structure avoids the hard contact between the thumb wheel and the point pressing piece, reduces the abrasion of the thumb wheel and the point pressing piece, and prolongs the service life of the point pressing piece. The saw band is characterized in that a pulse chip breaking device and a pressing part are arranged on a loosening section (namely, a section close to a driven wheel) and a tensioning section (namely, a section close to a driving wheel) of the saw band, saw chips are only generated on the tensioning section, so that the device located on the tensioning section plays a chip breaking role, the saw band vibrates up and down under the action of the pressing part, and a set of same device is also arranged on the loosening section, so that the saw band is ensured to vibrate up and down synchronously along the length direction of the saw band, and the saw cutting effect and the service life of the saw band are ensured.
The back of the saw belt is pressed by the point pressing pieces on the two sides at a certain frequency to enable the saw belt to vibrate up and down synchronously left and right, so that cutting chips are cut off or vibrated down in time, the saw belt is more stable to saw, and the service life of the saw belt is long; meanwhile, as the press part is continuously contacted with the back of the saw belt, the pressure sensor is integrated on the side, contacted with the back of the saw belt, of the press part on the right side, so that the pressure value borne by the saw back can be timely fed back to the lifting servo motor 15; since the material and shape of the material affect the shape of the sawdust, the pulse servo motor 31 can adjust the rotating speed of the dial wheel according to the cut material, so as to adjust the frequency of the sawdust breaking.
On the other hand, the saw back pressure feedback device is arranged at the back of the saw belt, the saw back feeds a pressure value back to the servo lifting driving system through the saw back pressure feedback device after the saw belt is lifted under stress, when the pressure is increased, the rotating speed of the servo motor is reduced, the feeding speed is reduced, and otherwise, the feeding speed is increased; meanwhile, the main motor feeds the output torque back to the servo lifting driving system through the encoder, when the output torque is increased, the rotating speed of the servo motor is reduced, the feeding speed is reduced, and otherwise, the feeding speed is increased; the output torque and the saw back pressure form double feedback control of the lifting speed of the saw frame, and meanwhile, when the lifting speed (namely the feeding speed) of the saw frame changes, the rotating speed of a main motor changes correspondingly, the sawing speed and the feeding speed are reasonably configured, closed-loop vector control is formed, the sawing efficiency is high, and the service life of a saw belt is greatly prolonged.
As shown in fig. 3, the guide plate 421 is movably connected with a movable guide plate 43, a space for the saw belt 14 to pass through is formed between the two movable guide plates 43, a saw deviation detecting device is arranged on the movable guide plate 43 and used for detecting the deviation degree of the saw belt, and the movable guide plate 43 is driven by an oil cylinder to adjust the distance.
As shown in fig. 1, the right saw band 14 of the right guide device 4 is further provided with a steel brush device 5, as shown in fig. 5, the steel brush device 5 comprises two brush wheels 54 respectively arranged at two sides of the saw band, the servo motor driving gear assembly 51 drives the two brush wheels 54 to rotate in different directions through a universal coupling 52, two ends of the universal coupling 52 are connected through a tension spring 53, so that the two brush wheels are always kept attached, a wheel cover 541 is fixed outside the brush wheels, an inward extending contact 55 is fixed on the wheel cover 541, and a contact sensing device is fixed between the two brush wheels.
The steel brush device is used for removing saw dust adhered to the saw belt, the brush wheels are driven to rotate reversely on two sides of the saw belt through the gear transmission structure, the two brush wheels are guaranteed to brush the saw dust in the same direction from two sides, the surfaces of the brush wheels are gradually abraded in the using process, the diameters of the brush wheels are gradually reduced, and the peripheries of the two brush wheels are guaranteed to be always attached in the reducing process through the universal coupling and the tension spring; on the other hand, the brush wheel is provided with a contact which is synchronously retracted with the brush wheel, when the brush wheel is completely used up, the contact is contacted with the contact sensing device, and a signal is fed back to the control system to remind the user of replacing the brush wheel.
As shown in fig. 1, a saw band clamping device 2 is arranged on the left side of the left side guiding device, as shown in fig. 4, the saw band clamping device 2 comprises two guide wheels with different diameters and respectively arranged on two sides of the saw band, the guide wheel arranged on the rear side of the saw band 14 is composed of four guide bearings 21, the diameter of a front guide wheel 22 arranged on the front side of the saw band 14 is larger than that of the guide bearings, a pressing rod 23 is hinged on the saw band clamping device by taking a pressing rod rotating shaft 231 as an axis, the upper end of the pressing rod 23 is driven by an oil cylinder, the lower end of the pressing rod is rotatably connected with a self-aligning bearing, and the self-aligning.
The oil cylinder pushes the upper end of the pressure lever outwards, the lower end of the pressure lever drives the front guide wheel 22 to press the rear guide wheel, the circumferential surfaces of the guide wheels at two sides keep vertically pressing the saw belt under the action of the self-aligning bearing, the saw belt is prevented from deflecting, the front and rear (vertical to the belt surface direction) vibration of a loose section of the saw belt is reduced, the saw belt is enabled to run more stably, and the processing precision is ensured; on the other hand, the linear speeds of the guide wheels on the two sides are the same, but the diameters of the guide wheels on the two sides are not consistent, the rotating speeds of the guide wheels on the two sides are not consistent, and the vibration frequencies of the guide wheels are different, so that resonance formed by the guide wheels on the two sides and the vibration frequency of the saw belt are avoided, the saw belt runs more stably, the machining precision is ensured, the noise is reduced, and the service life of the saw belt is prolonged. At the same time, the saw band clamping device 2 is arranged at the left side of the left guide device, so that a pre-guide function is provided.
A sawdust cleaning device 7 is arranged on the base corresponding to the sawdust falling position and used for conveying the sawdust into a cleaning trolley 71; a water temperature and water pressure control device 8 for cooling water is also arranged on the base, the water temperature and water pressure are monitored in real time, and the cooling water is heated when the water temperature is too low; an oil temperature control device 81 is further arranged on the base, the oil temperature is monitored in real time, and the oil temperature is kept within a reasonable range through heating or cooling. The bottom of the saw frame is also provided with a quick descending device, when the saw frame has a certain distance away from the material, the descending speed of the saw frame is increased, and when the bottom of the saw frame is close to the material, the speed of the saw frame is restored to the required feeding speed. The light curtain sensing system is arranged around the base, and when a person is too close to the base, the light curtain sensing system senses and feeds back the sensed light to the control system to stop working or give an alarm. The saw frame 2 is also provided with a saw belt detection device, and when the saw frame detects that no saw belt is arranged on the driven wheel or the driving wheel, a worker is reminded of installing the saw belt in time.
Example 2
In embodiment 2 shown in fig. 8, a high-speed intelligent band sawing machine has substantially the same structure as that of embodiment 1, except that the lowest points of two adjacent circular arc concave surfaces 323 are connected by a concave plane to form a long concave surface 324 with circular arc surfaces at both ends, and the long concave surface 324 extends in the circumferential direction.
After the pulse chip breaking device is started, the toggle surface drives the impulse bearing 41 to rotate, when the arc concave 323 section of the toggle surface is abutted to the bearing, the end part of the press part 42 is vibrated up and down at a certain frequency, and the back part of the saw belt is pressed at a certain frequency, so that the saw belt vibrates up and down at the frequency; when the long concave surface 324 of the dial surface rotates to abut against the bearing, the abutting time of the long concave surface and the bearing is longer than that of the arc concave surface, so that the lifting time of the pressing piece 42 and the saw belt is prolonged, the probability of discharging saw dust from the lifted saw belt is increased, the saw belt is prevented from vibrating at the same frequency all the time, resonance with other parts of the saw frame is avoided, and the stability is improved. Furthermore, the long concave surfaces 324 on the pulse chip breakers at the two ends of the saw band are ensured to be synchronously abutted against the pulse bearing 41, so that the saw band is ensured to simultaneously vibrate up and down along the length direction, and the cutting precision is ensured.
Example 3
The structure of the high-speed intelligent band sawing machine is substantially the same as that of the high-speed intelligent band sawing machine in embodiment 2, and the difference is that convex arc convex surfaces are arranged between the arc concave surfaces 323, and the whole poking surface except the long concave surface 324 section is a wave surface extending along the circumferential direction. When the bearing is abutted to the wavy surface, the saw belt is subjected to simple harmonic vibration, the pressing amplitude is increased, and the chip breaking effect is enhanced.
Example 4
As shown in embodiment 4 of fig. 9, a high-speed intelligent band sawing machine has a structure substantially the same as that of embodiment 1, and is characterized in that the thumb wheel 32 includes an inner thumb wheel 321 and an outer thumb wheel 322, a thumb surface is disposed on a bottom surface of the outer thumb wheel, a slot 329 with an upward opening is disposed on a periphery of the inner thumb wheel, the outer thumb wheel is inserted and compressed in the slot, a movable plate 327 is disposed in the slot, the movable plate 327 is disposed along the inner thumb wheel in a radial sliding manner, a compressed spring 328 is abutted to a space at a bottom of the movable plate 327, one end of the movable plate is connected to one end of a pull wire 326, a rack and pinion mechanism is disposed in the inner thumb wheel, a gear 325 is hinged to the inner thumb wheel, a peripheral surface of a rotation shaft of the gear 325 is connected to the other end of the pull wire 326, the inner thumb wheel is provided with a chute 323 with an opening at a bottom, the opening.
When saw cutting, if meet the condition of saw back pressure increase suddenly, the saw area is lifted rapidly, some pressure spare ejector pin jack-up upwards, from opening part jack-up rack, the rack upwards slides along the spout, drive gear and axis of rotation synchronous rotation, the axis of rotation rolling is acted as go-between, act as go-between and take out the fly leaf from interior thumb wheel, make originally compress tightly on the pressure spring of fly leaf bottom bounce, thereby it is ejecting from the slot to follow outer thumb wheel, make the face of stirring no longer laminate with the bearing, lift the position of stepping down on the some pressure spare, no longer continue to push down the saw area, avoid the saw area to damage when receiving too big momentum, extension saw area life-span. Meanwhile, the saw back pressure feedback device feeds back the servo motor of the pulse chip breaking device to stop rotating.
Claims (10)
1. The utility model provides a high-speed intelligent band sawing machine, characterized by includes:
the bed is used for placing and clamping the transported materials;
the saw frame is arranged above the bed, a driving wheel and a driven wheel which are driven by a main motor are rotatably connected to the saw frame, and saw belts are sleeved on the driving wheel and the driven wheel;
the tension detection device is used for detecting and adjusting the tension of the saw belt;
the saw back pressure feedback device is used for detecting the back pressure of the saw belt;
and the servo lifting driving system controls the lifting speed of the saw frame through the pressure at the back of the saw band and the feedback value of the output torque of the main motor, and controls the rotating speed of the main motor through the feedback value of the lifting speed of the saw frame.
2. The high-speed intelligent band sawing machine according to claim 1, further comprising a pulse chip breaking device for vibrating the saw band up and down, wherein a point pressing piece is arranged on the pulse chip breaking device and used for intermittently point pressing the back of the saw band, and a saw back pressure feedback device is arranged on the point pressing piece.
3. The high-speed intelligent band sawing machine according to claim 2, wherein the pressing piece is elastically hinged to the pulse chip breaking device, the pulse chip breaking device comprises a shifting wheel driven by a servo motor, a shifting surface is arranged on one side of the shifting wheel close to the pressing piece along the circumferential direction, the shifting surface is attached to the surface of the pressing piece, and the shifting surface drives the pressing piece to vibrate along with the rotation of the shifting wheel.
4. The high-speed intelligent band sawing machine according to claim 2, wherein the pulse chip breaking devices are provided with two pulse chip breaking devices and are respectively arranged at one end of the saw band close to the driven wheel and one end close to the driving wheel, the pressing parts on the two pulse chip breaking devices synchronously press the back of the saw band, and the saw back pressure feedback device is arranged on the pressing part close to one end of the driving wheel.
5. The high-speed intelligent band sawing machine according to claim 1, 2 or 3, further comprising a band clamping device, wherein the band clamping device is arranged at a band loosening section, the band clamping device comprises two guide wheels with different diameters and respectively arranged at two sides of the band, a pressure lever is hinged on the band clamping device, one end of the pressure lever is driven by a driving device, and the other end of the pressure lever is rotatably connected with one guide wheel.
6. The high-speed intelligent band sawing machine according to claim 1, 2 or 3, further comprising a steel brush device arranged at the tensioning section of the saw band, wherein the steel brush device comprises two brush wheels and a contact sensing device which are respectively arranged at two sides of the saw band, the driving device drives the two brush wheels to rotate towards different directions, the brush wheels are connected with the driving device through a universal coupling, the two brush wheels are always attached through an elastic part, the brush wheels are provided with contacts, and the contacts are contacted with the contact sensing device when the brush wheels are used up.
7. The high-speed intelligent band sawing machine according to claim 1, 2 or 3, wherein the driving wheel is driven by a main motor and is driven by a speed reducer, a spindle seat is fixed on an output shaft of the speed reducer, the spindle seat is fixed on the saw frame, a bearing is arranged on the spindle seat, the driving wheel is sleeved on the bearing, and the end part of the output shaft of the speed reducer is fixedly connected with the driving wheel.
8. The high-speed intelligent band sawing machine according to claim 1, 2 or 3, wherein a plurality of detection holes are uniformly distributed on the driven wheel along the circumferential direction, and a photoelectric sensor is arranged on the saw frame corresponding to the detection holes.
9. The high-speed intelligent band sawing machine according to claim 1, 2 or 3, wherein the bed comprises a feeding belt, a front clamp device and a rear clamp device which are respectively arranged at two sides of the feeding belt, the rear clamp device is slidably connected to the bed along a feeding direction, the front clamp device and the rear clamp device respectively comprise a movable jaw and a micro jaw which are respectively arranged at two sides of the feeding belt, the movable jaw is slidably connected to the bed along a direction perpendicular to the feeding direction, and the micro jaw is slidably connected to the bed along a direction perpendicular to the feeding direction through a micro driving piece.
10. The high-speed intelligent band sawing machine according to claim 9, wherein a first clamping position detection device is arranged on the feeding belt, and a second clamping position detection device and a clamping pressure detection device are arranged on a movable jaw of the rear clamp device.
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| CN113211132A (en) * | 2021-05-24 | 2021-08-06 | 马鞍山钢铁股份有限公司 | Sawing machine clamp device and clamping operation method |
| CN113996865A (en) * | 2021-10-20 | 2022-02-01 | 浙江柳发锯切科技有限公司 | Automatic horizontal metal band sawing machine of pay-off |
| CN114789361A (en) * | 2022-05-12 | 2022-07-26 | 北京摩森纳切割技术装备有限公司 | Intelligent sawing system of high-speed sawing machine |
| CN117428254A (en) * | 2023-12-20 | 2024-01-23 | 山东瑞烨新能源装备有限公司 | Cleaning device for metal band sawing machine |
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| CN112388060B (en) | 2023-06-30 |
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Address after: 321400 No.1, Dongshan Industrial Zone, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Applicant after: Zhejiang saw Lihuang Industrial Technology Co.,Ltd. Applicant after: Zhejiang Dake Intelligent Equipment Co.,Ltd. Address before: 321400 No.1, Dongshan Industrial Zone, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Applicant before: ZHEJIANG JULIHUANG SAWING MACHINE GROUP Co.,Ltd. Applicant before: Zhejiang Dake Intelligent Equipment Co.,Ltd. |
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