CN112974977A - Pipe cutting machine with limiting fixed length and side blanking and pipe cutting method thereof - Google Patents
Pipe cutting machine with limiting fixed length and side blanking and pipe cutting method thereof Download PDFInfo
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- CN112974977A CN112974977A CN202110249230.1A CN202110249230A CN112974977A CN 112974977 A CN112974977 A CN 112974977A CN 202110249230 A CN202110249230 A CN 202110249230A CN 112974977 A CN112974977 A CN 112974977A
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- blanking
- pipe
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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
- B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
- B23D45/12—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade for cutting tubes
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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
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/04—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
-
- 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
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/08—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for bringing the circular saw blade to the workpiece or removing same therefrom
-
- 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
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/12—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of drives for circular saw blades
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Abstract
The invention discloses a pipe cutting machine with limited fixed length and side blanking and a pipe cutting method thereof. The automatic pipe length limiting device comprises a base, a working table plate, a conveying mechanism, a clamping mechanism, a cutting mechanism, a discharging mechanism, a linkage type driving mechanism, a pipe length limiting mechanism and a collecting tank. The working table plate is fixed on the base. The conveying mechanism, the clamping mechanism, the blanking mechanism and the pipe length limiting mechanism are sequentially arranged along the length direction of the base. The cutting mechanism is located on one side of the clamping mechanism. The linkage type driving mechanism comprises a crankshaft, a cutting transmission connecting rod, a clamping cam and a blanking transmission assembly. The limiting plate and the limiting switch are used for limiting the length of the cut pipe. Compared with the mode of measuring the pipe by using the encoder matched with the roller in the prior art, the scheme of using the limit switch can avoid detection errors caused by slipping and the like, so that the precision of the pipe is further improved.
Description
Technical Field
The invention belongs to the technical field of pipe cutting equipment, and particularly relates to a multi-mechanism linkage type pipe cutting machine and a pipe cutting method thereof.
Background
The existing pipe cutting device uses an encoder to match with a roller to measure the length of a pipe, and is easy to cause errors due to reasons such as slipping. In addition, during the processing of the pipe, the formed pipe needs to be cut. The existing pipe cutting machine needs independent motors to drive pipe conveying, clamping, saw blade feeding and blanking, the control process is very complex, and the cost is high. Therefore, it is necessary to design a pipe cutting apparatus capable of driving a plurality of pipe cutting actions by a single motor, thereby reducing the cost of the pipe cutting apparatus.
Disclosure of Invention
The invention aims to provide a multi-mechanism linkage type pipe cutting machine and a pipe cutting method thereof.
The invention relates to a pipe cutting machine capable of limiting length and discharging at the side part, which comprises a base, a working table plate, a conveying mechanism, a clamping mechanism, a cutting mechanism, a discharging mechanism, a linkage type driving mechanism, a pipe length limiting mechanism and a collecting tank. The working table plate is fixed on the base. The conveying mechanism, the clamping mechanism, the blanking mechanism and the pipe length limiting mechanism are sequentially arranged along the length direction of the base. The cutting mechanism is located on one side of the clamping mechanism.
The conveying mechanism is provided with a main supporting roller and a lower pressing wheel; the conveyed pipe is pressed between the main supporting roller and the lower pressing wheel; the main supporting roller or the lower pressing wheel is driven to rotate to drive the pipe to be conveyed. The clamping mechanism is driven by the linkage type driving mechanism to loosen and clamp the pipe. The cutting mechanism comprises a cutting rotating frame and a saw blade; the bottom of the cutting rotating frame and the working table plate form a rotating pair or a sliding pair; the saw blade is arranged on the cutting rotating frame; the cutting rotating frame is driven by a linkage type driving mechanism to reciprocate up and down;
the blanking mechanism comprises a hinged support, a turning frame and a guide turning plate. The hinged support is fixed on the working table plate. The inner side of the roll-over stand is hinged with the hinged support. The guide turning plate is fixed on the turning frame. The outer side of the top surface of the guide turning plate is provided with an upturned cambered surface. In the process of conveying the pipe, the guide turning plate is positioned below the pipe. The roll-over stand is driven by the linkage type driving mechanism to roll over up and down in a reciprocating way. The collecting tank is arranged on one side of the base, is close to the inner side of the guide turning plate and is used for receiving the pipe sliding out along the guide turning plate.
The linkage type driving mechanism comprises a crankshaft, a cutting transmission connecting rod, a clamping cam and a blanking transmission assembly. A crank portion on the crankshaft is aligned with the cutting mechanism. One end of the cutting transmission connecting rod and a crank part on the crankshaft form a rotating pair. The other end of the cutting transmission connecting rod and the cutting rotating frame form a rotating pair. The clamping cam is fixed on the crankshaft and corresponds to the clamping mechanism in position. The crankshaft is connected with the roll-over stand through a blanking transmission component. The blanking transmission component is a cam mechanism or a crank rocker mechanism and drives a roll-over stand in the blanking mechanism to roll over up and down.
When the cutting rotating frame drives the saw blade to move in a range intersecting with the pipe, the clamping cam drives the clamping mechanism to be in a clamping state. In the process that the cutting rotating frame drives the saw blade to turn downwards from the upper limit position, the blanking mechanism is kept static under the driving of the blanking transmission assembly or moves below the pipe. In the process that the cutting rotating frame drives the saw blade to upwards overturn from the lower limit position, the blanking transmission assembly drives the guide turning plate in the blanking mechanism to upwards overturn, and the cut pipes are sent into the collecting tank.
The pipe length limiting mechanism comprises a sliding plate, a limiting baffle and a limiting switch. The sliding plate is connected with the base in a sliding mode and can be locked. The vertically arranged limit baffle is fixed on the sliding plate. The limit switch is arranged on the limit baffle and is aligned with the pipe.
Preferably, the blanking transmission assembly comprises a blanking cam and a blanking push plate. The blanking push plate is fixed on the overturning bracket. The blanking cam is fixed on the crankshaft and is in contact with the blanking push plate. The working profile of the blanking cam comprises a blanking large-diameter section, a blanking small-diameter section and two blanking transition sections. Two ends of the blanking large-diameter section are respectively and smoothly connected with two ends of the blanking small-diameter section through two blanking transition sections. The circumferential angle covered by the blanking small-diameter section is greater than or equal to 180 degrees. When the blanking small-diameter section of the working profile of the blanking cam is in contact with the blanking push plate, the guide turning plate is positioned below the cut pipe; when the blanking large-diameter section of the working profile of the blanking cam is in contact with the blanking push plate, the guide turning plate is turned upwards to a state that the cut pipe is lifted, and an inclined plane for guiding the pipe to slide out is formed.
Preferably, the blanking transmission assembly comprises a blanking crank and a blanking connecting rod. The inner end of the blanking crank is fixed with the end part of the crank shaft. The outer end of the blanking crank is hinged with one end of the blanking connecting rod. The other end of the blanking connecting rod is hinged with a roll-over stand in the blanking mechanism. In the process that the cutting rotating frame overturns from the upper limit position to the lower limit position, the overturning frame in the blanking mechanism overturns downwards firstly and then overturns upwards to return to the middle position without contacting with the pipe. In the process that the cutting rotating frame is turned to the upper limit position from the lower limit position, the turning frame in the blanking mechanism is firstly turned upwards and then turned downwards to return to the middle position, and the guide turning plate lifts the cut-off pipe in the process, so that the pipe is conveyed into the collecting tank.
Preferably, the blanking mechanism further comprises a blanking clamping assembly. The blanking clamping assembly comprises a blanking pressing plate and an L-shaped connecting frame. The blanking pressing plate is fixed with the roll-over stand through the L-shaped connecting frame. The blanking pressing plate is positioned above the outer side of the guide turning plate. One end of the blanking pressing plate, facing the clamping mechanism, is provided with a chamfer angle inclining downwards and used for guiding the pipe to enter the lower side of the blanking pressing plate. In the process of conveying the pipe, the blanking pressing plate is positioned on the upper side of the pipe.
Preferably, the pipe length limiting mechanism further comprises a guide block. Two guide blocks arranged at equal height are arranged on an adjusting groove arranged on the limit baffle. The two guide blocks are respectively positioned at two sides of the limit switch. The outer ends of the opposite side surfaces of the two guide blocks are provided with chamfers.
Preferably, the cutting mechanism further comprises a counterweight; the balance weight is fixed on one side of the cutting rotating frame far away from the cutting motor; the balance weight makes the center of gravity of the whole cutting mechanism on the rotating axis of the rotating pair formed by the cutting rotating frame and the working table plate.
Preferably, an epicyclic sensor is arranged between the crankshaft base and the crankshaft base. The turnover sensor comprises a contact piece and a photoelectric sensor. One end of the contact piece is fixed with the crankshaft. The photoelectric sensor is fixed on the working table plate and corresponds to the position of the contact piece. The photoelectric sensor will be triggered once every time the contact piece rotates one circle. When the cutting rotating frame is at the upper limit position, the contact pieces are aligned with the photoelectric sensor.
Preferably, the linkage type driving mechanism further comprises a driving motor, a driving shaft, a first double-ratchet wheel linkage assembly, a second double-ratchet wheel linkage assembly and a conveying transmission assembly. The first double-ratchet wheel linkage assembly and the second double-ratchet wheel linkage assembly respectively comprise a first ratchet wheel and pawl mechanism, a second ratchet wheel and pawl mechanism, a sleeve and a locking support. The locking support is fixed on the working table plate. The sleeve is supported on the capture abutment. The drive shaft is supported in the sleeve. The first ratchet-pawl mechanism is arranged between the sleeve and the locking support. The second ratchet-pawl mechanism is arranged between the driving shaft and the sleeve. The direction in which the drive shaft allows rotation relative to the sleeve is opposite to the direction in which the sleeve allows rotation relative to the capture abutment. The driving shaft is driven to rotate by a driving motor. The direction in which the sleeve in the first dual ratchet linkage assembly allows rotation relative to the capture abutment is opposite to the direction in which the sleeve in the second dual ratchet linkage assembly allows rotation relative to the capture abutment. The main supporting roller and a sleeve in the first double-ratchet wheel linkage assembly are driven by the conveying transmission assembly; and a sleeve in the second double-ratchet wheel linkage assembly is in transmission connection with the crankshaft.
Preferably, the first ratchet-pawl mechanism comprises a first ratchet, a first pawl and a torsion spring. The first ratchet wheel is fixed on the outer circumferential surface of the sleeve. The ratchet ring of the first ratchet wheel is located in the outer side of the ratchet ring. One end of one or more first pawls is hinged with the inner cavity of the cylinder on the locking support, and the other end of the one or more first pawls abuts against the ratchet ring outside the first ratchet wheel. A torsion spring is arranged between each first pawl and the locking support; the torsion spring provides the first pawl with an elastic force against the ratchet ring outside the first ratchet wheel.
The second ratchet-pawl mechanism comprises a shaft sleeve, a second ratchet, a second pawl and a spring. The shaft sleeve is connected with the driving shaft through a spline; the second ratchet wheel is fixed on the inner side of the sleeve. The ratchet ring of the second ratchet wheel is positioned in the central hole of the ratchet ring. A plurality of second pawls are evenly distributed along the circumferential direction of the outer side surface of the shaft sleeve. The inner end of each second pawl is hinged with the shaft sleeve, and the outer end of each second pawl is propped against the ratchet ring at the inner side of the second ratchet wheel. Springs are arranged between the second pawls and the shaft sleeve; the spring adopts a pressure spring to provide the second pawl with elastic force for propping against the ratchet ring at the inner side of the second ratchet wheel.
Preferably, auxiliary supporting components are installed on two sides of the blanking mechanism. The auxiliary supporting component is arranged on the working table plate or the pipe length limiting mechanism. The auxiliary supporting assembly comprises an auxiliary frame and an auxiliary supporting roller. The auxiliary supporting roller is supported on the top of the auxiliary frame.
Preferably, the conveying mechanism comprises a conveying frame, a main supporting roller and a pressing assembly. The conveying frame is fixed on the working table plate. One or more main support rollers are each supported on the carriage. The conveying frame is provided with a guide hole for passing through the pipe. The pressing assembly comprises a first guide pillar, a first spring, a lower pressing frame and a lower pressing wheel. The top end of the first guide pillar which is vertically arranged is fixed with the top of the conveying frame. The lower pressing frame and the first guide post form a sliding pair. The first spring is sleeved on the first guide post. Two ends of the first spring respectively abut against the conveying frame and the lower pressing frame. The lower pressing wheel is supported at the top of the lower pressing frame. An elastic layer is arranged on the outer circumference of the lower pinch roller. The main conveying roller corresponding to the lower pinch roller is driven to rotate by a linkage type driving mechanism.
Preferably, the clamping mechanism comprises a clamping base, a fixed clamping block, a sliding clamping block, a clamping claw, a second guide column, a connecting column, a second spring, a sliding sleeve and a clamping push plate. The clamping base is fixed on the working table board. The fixed clamping block is fixed at one end of the clamping base. The sliding clamping block and a second guide post horizontally fixed on the clamping base form a sliding pair. The opposite side surfaces of the fixed clamping block and the sliding clamping block are detachably fixed with clamping claws. The opposite side surfaces of the clamping claws are provided with grooves corresponding to the external size of the cut pipe. The side surface of the sliding clamping block, which is far away from the fixed clamping block, is fixed with a connecting column. The connecting column is connected with a sliding sleeve in a sliding way. The connecting column is sleeved with a second spring. Two ends of the second spring respectively abut against the sliding sleeve and the sliding clamping block. A clamping push plate is fixed on the outer side surface of the sliding sleeve. The clamping push plate corresponds to a clamping cam in the linkage type driving mechanism. The working profile of the clamping cam comprises a clamping large-diameter section, a clamping small-diameter section and two clamping transition sections. The two ends of the clamping large-diameter section are smoothly connected with the two ends of the clamping small-diameter section through two clamping transition sections respectively. The clamping large-diameter section covers a circumferential angle of 180 ° or more. When the clamping small-diameter section of the working profile of the clamping cam is in contact with the clamping push plate, the clamping mechanism is in a loose state; when the clamping large-diameter section of the working profile of the clamping cam is in contact with the clamping push plate, the clamping mechanism is in a clamping state.
The pipe cutting method of the pipe cutting machine capable of limiting fixed length and blanking at the side part comprises the following specific steps:
step one, the end part of the pipe is sent into the conveying mechanism and penetrates through the clamping part of the clamping mechanism.
And step two, driving the motor to rotate positively, so that the driving shaft drives the conveying mechanism through the first double-ratchet wheel linkage assembly, and the pipe is driven to move towards the pipe length limiting mechanism.
Thirdly, when the pipe is driven by the conveying mechanism to abut against the limit baffle, the limit switch is pressed down; the driving motor rotates reversely, so that the driving shaft drives the crankshaft to rotate through the second double-ratchet wheel linkage assembly.
In the process of crankshaft rotation, the clamping cam is driven to rotate firstly, so that the clamping mechanism clamps the pipe, and the cutting rotating frame is turned downwards to enable the saw blade to cut the pipe. After the pipe is cut off, the cutting rotating frame is driven to turn over upwards to reset, the clamping cam rotates, so that the pipe is loosened by the clamping mechanism, the unloading transmission assembly drives the overturning frame in the unloading mechanism to turn over upwards firstly and then turn over downwards to reset, and the guide turning plate lifts up the pipe which is cut off in the process, so that the pipe enters the collecting tank. And C, when the crankshaft rotates for one circle, the step C is carried out.
And step four, repeatedly executing the step two and the step three. And continuous cutting of the pipe is realized.
The invention has the beneficial effects that:
1. the limiting plate and the limiting switch are utilized to limit the length of the cut pipe, and the limiting switch is triggered only when being pressed by the pipe, so that compared with the mode of measuring the pipe by utilizing an encoder to match with a roller in the prior art, the scheme of the limiting switch can avoid detection errors caused by slipping and the like, and further improve the precision of the pipe. In addition, the length of the cut pipe can be conveniently realized by adjusting the position of the pipe length limiting mechanism, and the pipe length limiting mechanism is more convenient compared with the prior art.
2. According to the invention, the crankshaft is matched with the crank rocker mechanism to drive the cutting rotating frame to rotate up and down in a reciprocating manner, the crankshaft is matched with the clamping cam to drive the clamping mechanism to be loose or tight, and the blanking cam is used for turning up the blanking mechanism. The clamping of the pipe during the cutting process is very reliable, since the cam has caused the clamping mechanism to clamp completely before the blade contacts the pipe. The blanking mechanism only starts to move after the pipe is cut off, so that the interference between cutting and blanking is avoided.
3. The first double-ratchet wheel linkage assembly and the second double-ratchet wheel linkage assembly are matched by an inner ratchet wheel pawl mechanism and an outer ratchet wheel pawl mechanism, forward rotation and reverse rotation of a driving shaft are separated, forward rotation is transmitted to a main supporting roller to realize conveying of a pipe, and reverse rotation is transmitted to a clamping mechanism and a cutting mechanism to realize clamping and cutting of the pipe. Compared with the technical scheme of multi-motor matching in the prior art, the technical scheme of single motor multiplexing has the advantages of simpler control and lower cost.
4. According to the invention, through the blanking pressing plate in the blanking mechanism and the guide block in the pipe length limiting mechanism, the horizontal limiting and the vertical limiting of the cut part of the cut pipe are realized, and the jumping of the cut pipe can be effectively reduced.
Drawings
Fig. 1 is a first overall structural diagram of embodiment 1 of the present invention.
Fig. 2 is a second overall structure diagram of embodiment 1 of the present invention.
Fig. 3 is a schematic top view of embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of a hidden collecting tank in embodiment 1 of the present invention.
Fig. 5 is a schematic view of a conveying mechanism in embodiment 1 of the present invention.
Fig. 6 is a schematic view of a clamping mechanism in embodiment 1 of the present invention.
Fig. 7 is a schematic view of a blanking mechanism in embodiment 1 of the present invention.
Fig. 8 is a schematic view of a first dual ratchet linkage assembly according to embodiment 1 of the present invention.
Fig. 9 is a schematic view of a second dual ratchet linkage assembly according to embodiment 1 of the present invention.
Fig. 10 is a schematic view of a tube length limiting mechanism in embodiment 1 of the present invention.
Fig. 11 is a schematic view of the overall structure of embodiment 2 of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, 2, 3 and 4, a pipe cutting machine capable of limiting fixed length and side blanking comprises a base 1, a working table plate 2, a conveying mechanism 3, a clamping mechanism 4, a cutting mechanism 5, an auxiliary supporting assembly 6, a blanking mechanism 7, a linkage type driving mechanism 8, a pipe length limiting mechanism 9, a collecting tank 14 and a controller. A horizontally arranged work table plate 2 is fixed at one end of the base 1. The conveying mechanism 3, the clamping mechanism 4 and the cutting mechanism 5 are all arranged on the working table plate 2. The conveying mechanism 3, the clamping mechanism 4, the blanking mechanism 7 and the pipe length limiting mechanism 9 are sequentially arranged along the length direction of the base 1. The cutting mechanism 5 is located on one side of the clamping mechanism 4. The pipe length limiting mechanism 9 is connected to the base 1 in a sliding mode through the guide rails 9-5 and the sliding blocks, and therefore the length of the cut pipe 15 is adjusted. Auxiliary supporting components 6 are arranged on two sides of the blanking mechanism 7. The auxiliary support assembly 6 includes an auxiliary frame and an auxiliary support roller. The auxiliary supporting roller is supported on the top of the auxiliary frame. The auxiliary frame is fixed on the sliding plate 9-1 in the working bedplate 2 or the pipe length limiting mechanism 9. The auxiliary supporting assembly 6 is used for supporting the pipe 15 between the clamping mechanism 4 and the pipe length limiting mechanism 9.
As shown in fig. 5, the conveying mechanism 3 includes a conveying frame 3-1, a main supporting roller 3-2 and a pressing assembly. The conveying frame 3-1 is fixed on the working platform plate 2. Two main supporting rollers 3-2 arranged in sequence are supported on the conveying frame 3-1. A guide hole for passing through the pipe 15 is formed on a vertical side plate in the conveying frame 3-1. The pressing assembly comprises a first guide post 3-3, a first spring 3-4, a lower pressing frame 3-5 and a lower pressing wheel 3-6. The top ends of the two first guide columns 3-3 which are vertically arranged are fixed with the top of the conveying frame 3-1. The lower pressing frame 3-5 and the two first guide posts 3-3 form a sliding pair through guide sleeves. The two first guide columns 3-3 are sleeved with first springs 3-4. Two ends of the first spring 3-4 respectively abut against the conveying frame 3-1 and the lower pressing frame 3-5 to provide pressing elasticity for the lower pressing frame 3-5. The lower pinch roller 3-6 is supported on the top of the lower pressure frame 3-5. An elastic layer is arranged on the outer circumference of the lower pinch roller 3-6. The material of the elastic layer is preferably rubber. The lower pinch roller 3-6 is positioned directly above one of the main support rollers 3-2. The lower pinch rollers 3-6 apply pressure to the pipe 15, so that the pipe 15 is prevented from slipping when the supporting wheels rotate, and the pipe 15 can be conveyed stably by the rotation of the supporting wheels. The main conveying roller corresponding to the lower pinch rollers 3-6 is driven to rotate by a linkage type driving mechanism 8.
As shown in figure 6, the clamping mechanism 4 comprises a clamping base 4-1, a fixed clamping block 4-2, a sliding clamping block 4-3, a clamping claw 4-4, a second guide post 4-5, a connecting post 4-6, a second spring 4-7, a sliding sleeve 4-8 and a clamping push plate 4-9. The clamping base 4-1 is fixed on the work table 2. The fixed clamping block 4-2 is fixed at one end of the clamping base 4-1. The sliding clamping block 4-3 and a second guide post 4-5 horizontally fixed on the clamping base 4-1 form a sliding pair. The opposite side surfaces of the fixed clamping block 4-2 and the sliding clamping block 4-3 are detachably fixed with clamping claws 4-4. The opposite side surfaces of the clamping claws 4-4 are provided with grooves corresponding to the external dimension of the cut pipe 15. The pipe 15 with different sizes can be adapted by replacing different clamping claws 4-4. A connecting column 4-6 is fixed on the side surface of the sliding clamping block 4-3 far away from the fixed clamping block 4-2. The connecting columns 4-6 are connected with sliding sleeves 4-8 in a sliding way. The connecting column 4-6 is sleeved with a second spring 4-7. Two ends of the second spring 4-7 respectively abut against the sliding sleeve 4-8 and the sliding clamping block 4-3. A clamping push plate 4-9 is fixed on the outer side surface of the sliding sleeve 4-8. The sliding sleeve 4-8 can compress the second spring 4-7 by pushing the clamping push plate 4-9, so as to provide pressure for clamping the pipe 15 for the sliding clamping block 4-3. The clamping push plates 4-9 are pushed by a linkage type driving mechanism 8.
As shown in fig. 1 and 2, the cutting mechanism 5 includes a cutting turret 5-1, a cutting motor 5-2, a saw blade 5-3, a guard 5-4, and a counterweight 5-5. The bottom of the cutting rotating frame 5-1 and the working table plate 2 form a rotating pair through a pin shaft and a hinged seat. A cutting motor 5-2 with a speed reducer is fixed on the cutting rotating frame 5-1. An output shaft of the cutting motor 5-2 is fixed with the saw blade 5-3. The protective cover 5-4 is fixed on the cutting rotating frame 5-1 and covers the saw blade 5-3. The balance weight 5-5 is fixed on one side of the cutting rotating frame 5-1 far away from the cutting motor 5-2. The balance weight 5-5 enables the gravity center of the whole cutting mechanism 5 to be on the axis of the pin shaft between the cutting rotating frame 5-1 and the working table plate 2, so that the cutting rotating frame 5-1 is prevented from being driven to turn over by gravity, and the linkage type driving mechanism 8 can be ensured to stably drive the cutting rotating frame 5-1 to rotate. The cutting rotating frame 5-1 is driven by the linkage type driving mechanism 8 to turn up and down in a reciprocating way.
As shown in figure 7, the blanking mechanism 7 comprises a hinged support 7-1, a roll-over stand 7-2, a guide turning plate 7-3 and a blanking clamping assembly. The hinged support 7-1 is fixed at the edge of the worktable 2. The inner side of the roll-over stand 7-2 is hinged with the top of the hinged support 7-1. The guide turning plate 7-3 is fixed on the turning frame 7-2. An upturned cambered surface is arranged at the outer side edge of the top surface of the guide turning plate 7-3. In the process of conveying the pipe 15, the guide turning plate 7-3 is positioned below the pipe 15. After the pipe 15 between the cutting mechanism 5 and the pipe length limiting mechanism 9 is cut off, the turning frame 7-2 drives the guide turning plate 7-3 to turn upwards, so that the pipe 15 is lifted by the upturned guide turning plate 7-3 and slides into the collecting tank 14 (not shown in the figure) along the inclined plane on the guide turning plate 7-3 after meals. The roll-over stand 7-2 is driven by the linkage type driving mechanism 8 to roll over up and down in a reciprocating way. The collecting gutter 14 is arranged on one side of the base 1.
The blanking clamping component comprises a blanking pressing plate 7-4 and an L-shaped connecting frame 7-5. The blanking pressing plate 7-4 is fixed with the roll-over stand 7-2 through an L-shaped connecting frame 7-5. The blanking pressing plate 7-4 is positioned above the outer side of the guide turning plate 7-3 and used for limiting the vertical jumping of the pipe 15 in the cutting process, so that the pipe cutting quality is improved. One end of the blanking pressing plate 7-4 facing the clamping mechanism 4 is provided with a downward inclined chamfer for guiding the pipe 15 to enter the lower side of the blanking pressing plate 7-4. When the roll-over stand 7-2 is in the initial position (i.e. the position of not turning up), the vertical distance from the blanking press plate 7-4 to the top of the auxiliary support assembly 6 is equal to or larger than the diameter of the cut tube 15. As the top surface of the guide turning plate 7-3 is lower than the top of the auxiliary support component 6 in the initial position; therefore, when the guide turning plate 7-3 is turned upwards, the blanking pressing plate 7-4 can not prevent the tube 15 from rolling down.
As shown in figures 1, 2, 3 and 4, the linkage type driving mechanism 8 comprises a motor bracket 8-1, a driving motor 8-2, a driving shaft 8-3, a first double-ratchet wheel linkage assembly 8-4, a second double-ratchet wheel linkage assembly 8-5, a conveying transmission assembly, a crankshaft 8-6, a cutting transmission connecting rod 8-7, a clamping cam 8-8, a blanking transmission assembly and a turnover sensor.
The first dual-ratchet linkage assembly 8-4 and the second dual-ratchet linkage assembly 8-5 each comprise a first ratchet-pawl mechanism 10, a second ratchet-pawl mechanism 11, a sleeve 12 and a locking support 13. The locking support 13 is fixed on the working bedplate 2. The sleeve 12 is bearing supported in a cylinder at the top of the capture abutment 13. The drive shaft 8-3 is supported in the sleeve 12 by bearings. A first ratchet-pawl mechanism is provided between the sleeve 12 and the cylinder at the top of the capture abutment 13. The second ratchet-pawl mechanism is arranged between the drive shaft 8-3 and the sleeve 12. The first ratchet-pawl mechanism allows only one-directional rotation of the sleeve 12 relative to the capture abutment 13. The second ratchet-pawl mechanism enables only one-directional rotation of the axle shaft 8-3 relative to the sleeve 12. The direction in which the axle shaft 8-3 is allowed to rotate relative to the sleeve 12 is opposite to the direction in which the sleeve 12 is allowed to rotate relative to the capture abutment 13.
The direction in which the sleeve 12 can be rotated relative to the capture abutment 13 is referred to as the effective steering, and the direction in which the sleeve 12 is locked relative to the capture abutment 13 is referred to as the ineffective steering; when the driving shaft 8-3 rotates along the effective steering direction, the sleeve 12 and the driving shaft 8-3 are locked by the second ratchet-pawl mechanism 11, and the sleeve 12 rotates along with the driving shaft 8-3. When the driving shaft 8-3 rotates along the invalid steering direction, the driving shaft 8-3 is locked by the first ratchet-pawl mechanism 10, and the driving shaft 8-3 alone can not drive the sleeve 12.
The direction in which the sleeve 12 of the first dual ratchet linkage assembly 8-4 is allowed to rotate relative to the capture abutment 13 is opposite to the direction in which the sleeve 12 of the second dual ratchet linkage assembly 8-5 is allowed to rotate relative to the capture abutment 13. Thus, the effective rotation of the sleeve 12 in the first and second dual ratchet linkage assemblies 8-4 and 8-5 is also reversed. Therefore, when the driving shaft 8-3 rotates forward, the sleeve 12 in the first double-ratchet linkage assembly 8-4 is driven to rotate forward, and the sleeve 12 in the second double-ratchet linkage assembly 8-5 is kept static. When the driving shaft 8-3 rotates reversely, the sleeve 12 in the second double-ratchet wheel linkage assembly 8-5 is driven to rotate forwards, and the sleeve 12 in the first double-ratchet wheel linkage assembly 8-4 keeps static. Therefore, the positive rotation and the reverse rotation of the driving shaft 8-3 are separated and transmitted to different driven parts, and the multiplexing of a single motor is realized.
The motor bracket 8-1 is fixed on the working bedplate 2; the driving motor 8-2 is fixed on the motor bracket 8-1, and the output shaft and the driving shaft 8-3 are fixed through a coupling.
As shown in FIG. 8, the first ratchet-pawl mechanism 10 includes a first ratchet 10-1, a first pawl 10-2 and a torsion spring 10-3. The first ratchet 10-1 is fixed on the outer circumferential surface of the sleeve 12. The ratchet ring of the first ratchet 10-1 is located in the outer side of itself. One end of one or more first pawls 10-2 is hinged with the inner cavity of the cylinder on the locking support 13, and the other end abuts against the ratchet ring outside the first ratchet 10-1. A torsion spring 10-3 is arranged between each first pawl 10-2 and the locking support 13; the torsion spring 10-3 provides the first pawl 10-2 with an elastic force against the ratchet ring outside the first ratchet 10-1. The first ratchet 10-1 is only able to rotate in one direction relative to the capture abutment 13 under the constraint of the first pawl 10-2.
As shown in fig. 9, the second ratchet-pawl mechanism 11 includes a sleeve 11-1, a second ratchet 11-2, a second pawl 11-3, and a spring 11-4. The shaft sleeve 11-1 is connected with the driving shaft 8-3 through a spline; the second ratchet 11-2 is fixed inside the sleeve 12. The ratchet ring of the second ratchet wheel 11-2 is positioned in the central hole of the ratchet ring. The plurality of second pawls 11-3 are uniformly distributed along the circumferential direction of the outer side surface of the sleeve 11-1. The inner end of each second pawl 11-3 is hinged with the shaft sleeve 11-1, and the outer end of each second pawl supports against the ratchet ring at the inner side of the second ratchet wheel 11-2. Springs 11-4 are arranged between the second pawls 11-3 and the shaft sleeve 11-1; the spring 11-4 is a compression spring, and provides the second pawl 11-3 with elastic force to abut against the ratchet ring at the inner side of the second ratchet wheel 11-2. The second ratchet wheel 11-2 can rotate only in one direction relative to the axle shaft 8-3 under the restriction of the second pawl 11-3.
As shown in fig. 10, the feed drive assembly includes a first bevel gear 8-11 and a second bevel gear 8-12. The first bevel gears 8-11 are coaxially fixed with the main conveying rollers corresponding to the lower pinch rollers 3-6. The second bevel gear 8-12 is fixed to a sleeve 12 in the first dual ratchet linkage assembly 8-4. The first bevel gear 8-11 meshes with the second bevel gear 8-12. The crankshaft 8-6 is supported on the working table plate 2 through a bearing seat and is coaxially arranged with the driving shaft 8-3. One end of the crankshaft 8-6 is flanged to the end of the inner sleeve 12 of the second double ratchet linkage assembly 8-5. The turnover sensor comprises a contact piece and a photoelectric sensor. One end of the contact piece is fixed with the crankshaft 8-6. The photoelectric sensor is fixed on the working table plate 2 and corresponds to the position of the contact piece. The photoelectric sensor will be triggered once every time the contact piece rotates one circle. When the cutting turret 5-1 is in the upper limit position, the contact pads are aligned with the photosensors.
The crank portions on the crankshafts 8-6 are aligned with the cutting mechanism 5. One end of the cutting transmission connecting rod 8-7 and a connecting rod journal of a crank part on the crankshaft 8-6 form a rotating pair. The other end of the cutting transmission connecting rod 8-7 and a pin shaft at the top of the cutting rotating frame 5-1 form a rotating pair. The clamping cam 8-8 is fixed on the crankshaft 8-6 and contacts with a clamping push plate 4-9 in the clamping mechanism 4. The working profile of the clamping cams 8-8 comprises a clamping major-diameter section, a clamping minor-diameter section and two clamping transition sections. The two ends of the clamping large-diameter section are smoothly connected with the two ends of the clamping small-diameter section through two clamping transition sections respectively. The clamping large-diameter section covers a circumferential angle of 180 ° or more. When the clamping small-diameter section of the working profile of the clamping cam 8-8 is contacted with the clamping push plate 4-9, the clamping mechanism 4 is in a loose state; when the clamping large-diameter section of the working profile of the clamping cam 8-8 is contacted with the clamping push plate 4-9, the clamping mechanism 4 is in a clamping state; the clamping push plates 4-9 can be driven to move by the rotation of the clamping cams 8-8, so that the clamping mechanism 4 is driven.
The blanking transmission component comprises a blanking cam 8-9, a blanking push plate 8-10 and a torsion spring. The blanking push plate 8-10 is fixed at the end part 0, facing the clamping mechanism 4, of the overturning bracket. The blanking cam 8-9 is fixed at the end part of the crankshaft 8-6 and is contacted with the blanking push plate 8-10. The working profile of the blanking cam 8-9 comprises a blanking large-diameter section, a blanking small-diameter section and two blanking transition sections. Two ends of the blanking large-diameter section are respectively and smoothly connected with two ends of the blanking small-diameter section through two blanking transition sections. The circumferential angle covered by the blanking small-diameter section is greater than or equal to 180 degrees. When the blanking small-diameter section of the working profile of the blanking cam 8-9 is contacted with the blanking push plate 8-10, the guide turning plate 7-3 is positioned below the cut pipe 15; when the blanking large-diameter section of the working profile of the blanking cam 8-9 is in contact with the blanking push plate 8-10, the guide turning plate 7-3 is turned upwards to a state that the cut pipe 15 is lifted, and the pipe 15 is guided into the collecting tank 14. Therefore, the guide turning plate 7-3 can be driven to turn over by the rotation of the blanking cam 8-9, so that the blanking mechanism 7 is driven. A torsion spring is arranged between a turning support and a hinged support 7-1 in the blanking mechanism 7, and the elasticity of the turning support tends to press a blanking push plate 8-10 against a blanking cam 8-9.
When the cutting rotating frame 5-1 is at the upper limit position, the clamping small diameter section of the working profile of the clamping cam 8-8 is in contact with the clamping push plate 4-9, the clamping mechanism 4 is in a released state, the clamping large diameter section of the working profile of the clamping cam 8-8 is in contact with the blanking push plate 8-10, and the guide turning plate 7-3 is at the initial position. When the cutting rotating frame 5-1 is at the lower limit position, the clamping large-diameter section of the working profile of the clamping cam 8-8 is in contact with the clamping push plate 4-9, the clamping mechanism 4 is in a clamping state, the clamping large-diameter section of the working profile of the clamping cam 8-8 is in contact with the blanking push plate 8-10, and the guide turning plate 7-3 is at the initial position.
When the cutting rotating frame 5-1 drives the saw blade 5-3 to move in the intersecting range of the pipe 15, the clamping small diameter section of the working profile of the clamping cam 8-8 is always kept in contact with the clamping push plate 4-9, and the clamping mechanism 4 is in a clamping state. In the process that the cutting rotating frame 5-1 drives the saw blade 5-3 to turn downwards from the upper limit position, the blanking small-diameter section of the working profile of the blanking cam 8-9 is always kept in contact with the blanking push plate 8-10, and the guide turning plate 7-3 is kept static. In the process that the cutting rotating frame 5-1 drives the saw blade 5-3 to turn upwards from the lower limit position, the blanking transition section and the blanking large-diameter section of the blanking cam 8-9 pass through the blanking push plate 8-10 to drive the guide turning plate 7-3 to turn upwards, and the cut pipe 15 is sent into the collecting tank 14.
Therefore, the linkage process of the clamping mechanism 4, the cutting mechanism 5 and the blanking mechanism 7 is as follows: the crankshaft 8-6 rotates for one circle under the driving of the sleeve 12 in the first double-ratchet linkage assembly 8-4; in the first 180 degrees of rotation of the crankshaft 8-6, the clamping mechanism 4 is driven by the clamping cam 8-8 to clamp the pipe 15 so as to ensure the stability of the cutting process, meanwhile, the cutting rotating frame 5-1 is turned downwards so that the saw blade 5-3 cuts the pipe 15, and the guide turning plate 7-3 in the blanking mechanism 7 is kept static. In the later 180 degrees of the rotation of the crankshaft 8-6, the cutting rotating frame 5-1 is turned upwards for resetting, the clamping mechanism 4 loses the extrusion force of the clamping cam 8-8 to loosen the pipe 15, meanwhile, the turning frame 7-2 in the blanking mechanism 7 is turned upwards firstly and then turned downwards to return to the initial position, and the guide turning plate 7-3 lifts the cut pipe 15 in the process, so that the pipe 15 is turned into the collecting tank 14 on one side of the base 1.
Two guide rails 9-5 are arranged on the top of the base 1 side by side along the conveying direction of the pipe 15 in the length direction. The pipe length limiting mechanism 9 comprises a sliding plate 9-1, a limiting baffle 9-2, a limiting switch 9-3 and a guide block 9-4. The sliding plate 9-1 is arranged on two guide rails 9-5 through a sliding block. The sliding plate 9-1 and the guide rail 9-5 are locked by a set screw or a lock catch. The length of the pipe 15 cut can be adjusted by adjusting the position of the sliding plate 9-1. The vertically arranged limit baffle 9-2 is fixed on the sliding plate 9-1. The limit switch 9-3 is arranged on the limit baffle 9-2 and is aligned with the bottom of the pipe 15 conveyed on the conveying mechanism 3. When the end of the tube 15 is conveyed to the limit stop 9-2, the lower limit switch 9-3 is pressed, so that a signal that the tube 15 is conveyed to the position is provided for the controller. Two guide blocks 9-4 which are arranged at the same height are arranged on an adjusting groove arranged on the limit baffle 9-2. The two guide blocks 9-4 are respectively positioned at two sides of the limit switch 9-3. The outer ends of the opposite side surfaces of the two guide blocks 9-4 are respectively provided with a chamfer angle for guiding the end part of the pipe 15 to enter between the two guide blocks 9-4. The guide blocks 9-4 can limit the left and right jumping of the pipe 15 in the cutting process, and the cutting effect is improved. The distance between the two guide blocks 9-4 can be adjusted to fit pipes 15 of different diameters. The distance between the two guide blocks 9-4 is adjusted to the diameter of the tube 15 to be cut.
In the invention, the limit switch 9-3 is used for providing a signal that the pipe 15 is conveyed in place for the controller, and the turnover sensor is used for providing a signal that the cutting and blanking are finished for the controller. The two control signals are simple rising edge signals, so the control of the invention is very simple; the controller only needs to receive the rising edge signal sent by the limit switch 9-3 or the turnover sensor and is only required to change the steering; the operation is very simple.
The pipe cutting method of the pipe cutting machine capable of limiting fixed length and blanking at the side part comprises the following specific steps:
step one, the end part of the pipe 15 passes through a guide hole on the conveying frame 3-1 and passes between two clamping claws 4-4 in the clamping mechanism 4. At this time, the lower pinch rollers 3-6 press the tube 15 under the spring force.
And step two, the motor 8-2 is driven to rotate positively, so that the driving shaft 8-3 drives the second bevel gear 8-12 to rotate through the first double-ratchet wheel linkage assembly 8-4, and further drives the corresponding main supporting wheel to rotate. In the process of rotation of the main supporting wheel, the pipe 15 is driven to move towards the pipe length limiting mechanism 9. At this point, the crankshaft 8-6 is locked in this direction by the second double ratchet linkage assembly 8-5 and remains stationary.
Thirdly, when the pipe 15 is driven by the conveying mechanism 3 to abut against the limit baffle 9-2, the limit switch 9-3 is pressed down; after receiving the signal sent by the limit switch 9-3, the controller controls the driving motor 8-2 to rotate reversely, so that the driving shaft 8-3 drives the crankshaft 8-6 to rotate through the second double-ratchet wheel linkage assembly 8-5. The second bevel gear 8-12 is locked in this direction by the first dual ratchet linkage assembly 8-4 and remains stationary.
In the process of rotating the crankshaft 8-6, the clamping cam 8-8 is driven to rotate firstly, so that the clamping mechanism 4 clamps the pipe 15, the cutting rotating frame 5-1 is turned downwards, so that the saw blade 5-3 cuts the pipe 15, the blanking cam rotates along with the crankshaft 8-6, but the turning frame 7-2 in the blanking mechanism 7 is kept static. After the pipe 15 is cut off, the cutting rotating frame 5-1 is driven to turn upwards for resetting, the clamping cam 8-8 rotates, so that the clamping mechanism 4 loosens the pipe 15, the blanking cam drives the turning frame 7-2 in the blanking mechanism 7 to turn upwards and then turn downwards for resetting, and the guide turning plate 7-3 lifts the cut pipe 15 in the process, so that the pipe 15 is turned into the collecting tank 14 on one side of the base 1.
And when the photoelectric sensor detects the contact piece again (the crankshaft rotates for one circle at the moment), the step four is carried out.
And step four, repeatedly executing the step two and the step three. A continuous severing of the tube 15 is achieved.
Example 2
As shown in fig. 11, the present embodiment is different from embodiment 1 in that: the blanking mechanism 7 is not provided with a blanking clamping component; the blanking transmission components have different structures, and particularly, the cam mechanism transmission is modified into crank and rocker mechanism transmission.
The blanking transmission component comprises blanking cranks 8-13 and blanking connecting rods 8-14. The inner end of the blanking crank 8-13 is fixed with the outer end part of the crank shaft 8-6. The outer end of the blanking crank 8-13 is hinged with one end of the blanking connecting rod 8-14. The other end of the blanking connecting rod 8-14 is hinged with the middle part of the roll-over stand 7-2 in the blanking mechanism 7. The blanking crank 8-13, the blanking connecting rod 8-14 and the roll-over stand 7-2 form a crank rocker mechanism. The turning frame 7-2 can be driven to turn up and down in a reciprocating way by the rotation of the blanking crank 8-13.
When the cutting rotating frame 5-1 is at the upper limit position and the small diameter section of the working profile of the clamping cam 8-8 is in contact with the push plate, the clamping mechanism 4 is in a released state, the overturning frame 7-2 in the blanking mechanism 7 is at the middle position and turns downwards along the following movement trend in the rotating direction of the crankshaft 8-6. When the cutting rotating frame 5-1 is at the lower limit position and the large-diameter section of the working profile of the clamping cam 8-8 is in contact with the push plate, the clamping mechanism 4 is in a clamping state, the overturning frame 7-2 in the blanking mechanism 7 is at the middle position and turns upwards along the following movement trend in the rotating direction of the crankshaft 8-6. When the cutting turret 5-1 is moved downwards until the saw blade 5-3 comes into contact with the tube 15, the large diameter section of the working profile of the clamping cam 8-8 has moved against the push plate. When the cutting rotating frame 5-1 moves upwards until the saw blade 5-3 is separated from the pipe 15, the large-diameter section of the working profile of the clamping cam 8-8 is still in a state of abutting against the push plate. Thereby ensuring that the tube 15 is clamped stably and reliably during the cutting process.
Therefore, the linkage process of the clamping mechanism 4, the cutting mechanism 5 and the blanking mechanism 7 is as follows: the crankshaft 8-6 rotates for one circle under the driving of the sleeve 12 in the first double-ratchet linkage assembly 8-4; in the first 180 degrees of rotation of the crankshaft 8-6, the clamping mechanism 4 is driven by the clamping cam 8-8 to clamp the pipe 15 so as to ensure the stability of the cutting process, meanwhile, the cutting rotating frame 5-1 is turned downwards to enable the saw blade 5-3 to cut the pipe 15, the turning frame 7-2 in the blanking mechanism 7 is firstly turned downwards and then turned upwards to return to the middle position without contacting with the pipe 15, and the blanking mechanism goes through an idle stroke. In the later 180 degrees of the rotation of the crankshaft 8-6, the cutting rotating frame 5-1 is turned upwards for resetting, the clamping mechanism 4 loses the extrusion force of the clamping cam 8-8 to loosen the pipe 15, meanwhile, the turning frame 7-2 in the blanking mechanism 7 is turned upwards firstly and then turned downwards to return to the middle position, and the guide turning plate 7-3 lifts the cut pipe 15 in the process, so that the pipe 15 is turned into the collecting tank 14 on one side of the base 1.
Claims (10)
1. A pipe cutting machine capable of limiting fixed length and discharging at the side part comprises a base (1), a working table plate (2), a conveying mechanism (3), a clamping mechanism (4), a cutting mechanism (5) and a discharging mechanism (7); the method is characterized in that: the device also comprises a linkage type driving mechanism (8) and a pipe length limiting mechanism (9); the working table plate (2) is fixed on the base (1); the conveying mechanism (3), the clamping mechanism (4), the blanking mechanism (7) and the pipe length limiting mechanism (9) are sequentially arranged along the length direction of the base (1); the cutting mechanism (5) is positioned at one side of the clamping mechanism (4);
the conveying mechanism (3) is provided with a main supporting roller (3-2) and a lower pressing wheel (3-7); the conveyed pipe is pressed between a main supporting roller (3-2) and a lower pressing wheel (3-7); the pipe is driven to be conveyed by driving the main supporting roller (3-2) or the lower pressure wheel to rotate; the clamping mechanism (4) is driven by the linkage type driving mechanism (8) to loosen and clamp the pipe; the cutting mechanism (5) comprises a cutting rotating frame (5-1) and a saw blade (5-3); the bottom of the cutting rotating frame (5-1) and the working table plate (2) form a rotating pair or a sliding pair; the saw blade (5-3) is arranged on the cutting rotating frame (5-1); the cutting rotating frame (5-1) is driven by a linkage type driving mechanism (6) to reciprocate up and down;
the blanking mechanism (7) comprises a hinged support (7-1), a roll-over stand (7-2) and a guide turning plate (7-3); the hinged support (7-1) is fixed on the working table plate (2); the inner side of the roll-over stand (7-2) is hinged with the hinged support (7-1); the guide turning plate (7-3) is fixed on the turning frame (7-2); an upturned cambered surface is arranged on the outer side of the top surface of the guide turning plate (7-3); in the process of conveying the pipe (15), the guide turning plate (7-3) is positioned below the pipe (15); the roll-over stand (7-2) is driven by a linkage type driving mechanism (8) to roll over up and down in a reciprocating way;
the linkage type driving mechanism (8) comprises a crankshaft (8-6), a cutting transmission connecting rod (8-7), a clamping cam (8-8) and a blanking transmission assembly; the crank part on the crankshaft (8-6) is aligned with the cutting mechanism (5); one end of the cutting transmission connecting rod (8-7) and a crank part on the crankshaft (8-6) form a rotating pair; the other end of the cutting transmission connecting rod (8-7) and the cutting rotating frame (5-1) form a rotating pair; the clamping cam (8-8) is fixed on the crankshaft (8-6) and corresponds to the clamping mechanism (4) in position; the crankshaft (8-6) is connected with the roll-over stand (7-2) through a blanking transmission assembly; the blanking transmission component is a cam mechanism or a crank rocker mechanism and drives a roll-over stand (7-2) in the blanking mechanism (7) to roll over up and down;
when the cutting rotating frame (5-1) drives the saw blade (5-3) to move in a range intersecting with the pipe (15), the clamping cam (8-8) drives the clamping mechanism (4) to be in a clamping state; in the process that the cutting rotating frame (5-1) drives the saw blade (5-3) to turn downwards from the upper limit position, the blanking mechanism is kept static under the driving of the blanking transmission assembly or moves below the pipe; in the process that the cutting rotating frame (5-1) drives the saw blade (5-3) to turn upwards from the lower limit position, the blanking transmission assembly drives the guide turning plate (7-3) in the blanking mechanism to turn upwards, and the cut pipe (15) is sent into the collecting tank (14);
the pipe length limiting mechanism (9) comprises a sliding plate (9-1), a limiting baffle (9-2) and a limiting switch (9-3); the sliding plate (9-1) is connected with the base in a sliding manner and can be locked; a vertically arranged limit baffle (9-2) is fixed on the sliding plate (9-1); the limit switch (9-3) is arranged on the limit baffle (9-2) and is aligned with the pipe (15).
2. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: the blanking transmission component comprises a blanking cam (8-9) and a blanking push plate (8-10); a blanking push plate (8-10) is fixed on the overturning bracket; the blanking cam (8-9) is fixed on the crankshaft (8-6) and is in contact with the blanking push plate (8-10); the working profile of the blanking cam (8-9) comprises a blanking large-diameter section, a blanking small-diameter section and two blanking transition sections; two ends of the blanking large-diameter section are respectively and smoothly connected with two ends of the blanking small-diameter section through two blanking transition sections; the circumferential angle covered by the blanking small-diameter section is larger than or equal to 180 degrees; when the blanking small-diameter section of the working profile of the blanking cam (8-9) is contacted with the blanking push plate (8-10), the guide turning plate (7-3) is positioned below the cut pipe (15); when the blanking large-diameter section of the working profile of the blanking cam (8-9) is contacted with the blanking push plate (8-10), the guide turning plate (7-3) is turned upwards to a state of lifting the cut pipe (15) and forms an inclined plane for guiding the pipe (15) to slide out.
3. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: the blanking transmission component comprises a blanking crank (8-13) and a blanking connecting rod (8-14); the inner end of the blanking crank (8-13) is fixed with the end part of the crankshaft (8-6); the outer end of the blanking crank (8-13) is hinged with one end of a blanking connecting rod (8-14); the other end of the blanking connecting rod (8-14) is hinged with a roll-over stand (7-2) in the blanking mechanism (7); in the process that the cutting rotating frame (5-1) is turned from the upper limit position to the lower limit position, the turning frame (7-2) in the blanking mechanism (7) is firstly turned downwards and then turned upwards to return to the middle position without contacting with the pipe (15); in the process that the cutting rotating frame (5-1) is turned from the lower limit position to the upper limit position, the turning frame (7-2) in the blanking mechanism (7) is firstly turned upwards and then turned downwards to return to the middle position, and the guide turning plate (7-3) lifts the cut pipe (15) in the process, so that the pipe (15) is conveyed into the collecting tank (14).
4. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: the blanking mechanism (7) also comprises a blanking clamping component; the blanking clamping assembly comprises a blanking pressing plate (7-4) and an L-shaped connecting frame (7-5); the blanking pressing plate (7-4) is fixed with the turnover frame (7-2) through an L-shaped connecting frame (7-5); the blanking pressing plate (7-4) is positioned above the outer side of the guide turning plate (7-3); one end of the blanking pressing plate (7-4) facing the clamping mechanism (4) is provided with a chamfer inclining downwards and used for guiding the pipe (15) to enter the lower side of the blanking pressing plate (7-4); in the process of conveying the pipe, the blanking pressing plate (7-4) is positioned on the upper side of the pipe.
5. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: the pipe length limiting mechanism (9) further comprises a guide block (9-4); two guide blocks (9-4) which are arranged at the same height are arranged on an adjusting groove arranged on the limiting baffle (9-2); the two guide blocks (9-4) are respectively positioned at two sides of the limit switch (9-3); chamfers are arranged at the outer ends of the opposite side surfaces of the two guide blocks (9-4).
6. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: the cutting rotating frame (5-1) and the working table plate (2) form a rotating pair; the cutting mechanism (5) also comprises a balance weight (5-5); the balance weight (5-5) is fixed on one side of the cutting rotating frame (5-1) far away from the cutting motor (5-2); the balancing weights enable the center of gravity of the whole cutting mechanism (4) to be on the rotating axis of a rotating pair formed by the cutting rotating frame (5-1) and the working table plate (2).
7. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: a turnover sensor is arranged between the crankshaft base and the crankshaft base; the turnover sensor comprises a contact piece and a photoelectric sensor; one end of the contact piece is fixed with the crankshaft (8-6); the photoelectric sensor is fixed on the working table plate (2) and corresponds to the position of the contact piece; the photoelectric sensor is triggered once every time the contact piece rotates for a circle; when the cutting rotating frame (5-1) is at the upper limit position, the contact pieces are aligned with the photoelectric sensor.
8. The pipe cutting machine capable of limiting fixed length and side blanking of claim 1, wherein: the linkage type driving mechanism (8) further comprises a driving motor (8-2), a driving shaft (8-3), a first double-ratchet wheel linkage assembly (8-4), a second double-ratchet wheel linkage assembly (8-5) and a conveying transmission assembly; the first double-ratchet wheel linkage assembly (8-4) and the second double-ratchet wheel linkage assembly (8-5) respectively comprise a first ratchet wheel and pawl mechanism (10), a second ratchet wheel and pawl mechanism (11), a sleeve (12) and a locking support (13); the locking support (13) is fixed on the working bedplate (2); the sleeve (12) is supported on the locking support (13); the driving shaft (8-3) is supported in the sleeve (12); the first ratchet-pawl mechanism is arranged between the sleeve (12) and the locking support (13); the second ratchet and pawl mechanism is arranged between the driving shaft (8-3) and the sleeve (12); the direction of the driving shaft (8-3) allowed to rotate relative to the sleeve (12) is opposite to the direction of the sleeve (12) allowed to rotate relative to the locking support (13); the driving shaft (8-3) is driven by the driving motor (8-2) to rotate; the direction of the sleeve (12) in the first double-ratchet linkage assembly (8-4) allowed to rotate relative to the locking support (13) is opposite to the direction of the sleeve (12) in the second double-ratchet linkage assembly (8-5) allowed to rotate relative to the locking support (13); the main supporting roller (3-2) and a sleeve (12) in the first double-ratchet wheel linkage assembly (8-4) are driven by a conveying transmission assembly (6-6); a sleeve (10) in the second double-ratchet wheel linkage assembly (8-5) is in transmission connection with the crankshaft (6-7).
9. The tube cutting machine for limiting cut-to-length and side blanking of claim 8, wherein: the first ratchet wheel and pawl mechanism (10) comprises a first ratchet wheel (10-1), a first pawl (10-2) and a torsion spring (10-3); the first ratchet wheel (10-1) is fixed on the outer circumferential surface of the sleeve (12); the ratchet ring of the first ratchet wheel (10-1) is positioned in the outer side of the ratchet ring; one end of one or more first pawls (10-2) is hinged with the inner cavity of the cylinder on the locking support (13), and the other end of the one or more first pawls props against a ratchet ring gear on the outer side of the first ratchet wheel (10-1); torsion springs (10-3) are arranged between the first pawls (10-2) and the locking support (13); the torsion spring (10-3) provides elasticity for the first pawl (10-2) to abut against the ratchet ring outside the first ratchet wheel (10-1);
the second ratchet wheel and pawl mechanism (11) comprises a shaft sleeve (11-1), a second ratchet wheel (11-2), a second pawl (11-3) and a spring (11-4); the shaft sleeve (11-1) is connected with the driving shaft (8-3) through a spline; the second ratchet wheel (11-2) is fixed on the inner side of the sleeve (12); the ratchet ring of the second ratchet wheel (11-2) is positioned in the central hole of the ratchet ring; a plurality of second pawls (11-3) are uniformly distributed along the circumferential direction of the outer side surface of the shaft sleeve (11-1); the inner end of each second pawl (11-3) is hinged with the shaft sleeve (11-1), and the outer end of each second pawl is propped against the ratchet ring at the inner side of the second ratchet wheel (11-2); springs (11-4) are arranged between the second pawls (11-3) and the shaft sleeve (11-1); the spring (11-4) adopts a pressure spring and provides the second pawl (11-3) with the elastic force of the ratchet ring which is propped against the inner side of the second ratchet wheel (11-2).
10. The pipe cutting method of the pipe cutting machine for limiting the fixed length and the side blanking according to claim 1, wherein:
firstly, sending the end part of the pipe (15) into the conveying mechanism (3) and penetrating through a clamping part of the clamping mechanism (4);
step two, driving a motor (8-2) to rotate positively, so that a driving shaft (8-3) drives a conveying mechanism (3) through a first double-ratchet wheel linkage assembly (8-4), and a pipe (15) is driven to move towards a pipe length limiting mechanism (9);
thirdly, when the pipe (15) is driven by the conveying mechanism (3) to abut against the limit baffle (9-2), the limit switch (9-3) is pressed down; the driving motor (8-2) rotates reversely, so that the driving shaft (8-3) drives the crankshaft (8-6) to rotate through the second double-ratchet wheel linkage assembly (8-5);
in the rotating process of the crankshaft (8-6), the clamping cam (8-8) is driven to rotate firstly, so that the clamping mechanism (4) clamps the pipe (15), and the cutting rotating frame (5-1) is turned downwards so that the saw blade (5-3) cuts the pipe (15); after the pipe (15) is cut off, the cutting rotating frame (5-1) is driven to turn upwards for resetting, the clamping cam (8-8) rotates to enable the clamping mechanism (4) to loosen the pipe (15), the blanking transmission assembly drives the turning frame (7-2) in the blanking mechanism (7) to turn upwards and then turn downwards for resetting, and the guide turning plate (7-3) lifts the cut pipe (15) in the process so that the pipe (15) enters the collecting tank (14); when the crankshaft rotates for one circle, entering the step four;
step four, repeatedly executing the step two and the step three; the continuous cutting of the pipe (15) is realized.
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| CN113414446A (en) * | 2021-06-23 | 2021-09-21 | 赵凯 | Industrial automation pipe fitting processing equipment |
| CN113523437A (en) * | 2021-07-06 | 2021-10-22 | 绍兴赛得空调设备有限公司 | Air conditioner part cutting and chamfering integrated machine |
| CN113858310A (en) * | 2021-09-27 | 2021-12-31 | 郭吉清 | PVC pipe cutting device convenient to measure and use method thereof |
| CN113927354A (en) * | 2021-11-09 | 2022-01-14 | 广州汉马自动化控制设备有限公司 | Simple pipe cutting machine |
| CN114192878A (en) * | 2021-12-28 | 2022-03-18 | 和跃运动器材(江苏)有限公司 | Pipe cutting machine and method for machining safe and environment-friendly sports equipment |
| CN114473111A (en) * | 2022-03-15 | 2022-05-13 | 晟高发新能源发展(江苏)有限公司 | Welding device and method for processing crystalline silicon solar cell module |
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| CN115673168A (en) * | 2022-11-10 | 2023-02-03 | 连云港伟泽材料科技有限公司 | Steel bar cutting machine |
| CN116277173A (en) * | 2023-05-25 | 2023-06-23 | 四川省医学科学院·四川省人民医院 | PICC catheter positioning and cutting device and PICC catheter cutting method |
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| CN117047336A (en) * | 2023-09-12 | 2023-11-14 | 山东高冷电器有限公司 | Intelligent welding system of refrigeration equipment |
| CN117817036A (en) * | 2024-03-05 | 2024-04-05 | 安徽广银铝业有限公司 | Cutting equipment for aluminum profile machining and cutting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113414446A (en) * | 2021-06-23 | 2021-09-21 | 赵凯 | Industrial automation pipe fitting processing equipment |
| CN113523437A (en) * | 2021-07-06 | 2021-10-22 | 绍兴赛得空调设备有限公司 | Air conditioner part cutting and chamfering integrated machine |
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| CN114192878A (en) * | 2021-12-28 | 2022-03-18 | 和跃运动器材(江苏)有限公司 | Pipe cutting machine and method for machining safe and environment-friendly sports equipment |
| CN114192878B (en) * | 2021-12-28 | 2024-07-02 | 和跃运动器材(江苏)有限公司 | Pipe cutting machine and method for processing safe and environment-friendly sports equipment |
| CN114473111A (en) * | 2022-03-15 | 2022-05-13 | 晟高发新能源发展(江苏)有限公司 | Welding device and method for processing crystalline silicon solar cell module |
| CN114473111B (en) * | 2022-03-15 | 2023-01-06 | 晟高发新能源发展(江苏)有限公司 | Welding device and method for processing crystalline silicon solar cell module |
| CN115283751A (en) * | 2022-10-08 | 2022-11-04 | 苏州荣纳自动化科技有限公司 | Wheel cutting machine with blade heat dissipation function |
| CN115673168B (en) * | 2022-11-10 | 2024-06-04 | 连云港伟泽材料科技有限公司 | Reinforcing steel bar cutting machine |
| CN115673168A (en) * | 2022-11-10 | 2023-02-03 | 连云港伟泽材料科技有限公司 | Steel bar cutting machine |
| CN116277173A (en) * | 2023-05-25 | 2023-06-23 | 四川省医学科学院·四川省人民医院 | PICC catheter positioning and cutting device and PICC catheter cutting method |
| CN116277173B (en) * | 2023-05-25 | 2023-07-21 | 四川省医学科学院·四川省人民医院 | PICC catheter positioning and cutting device and PICC catheter cutting method |
| CN116475490B (en) * | 2023-06-09 | 2024-04-02 | 正阳科技股份有限公司 | Cutting machine |
| CN116475490A (en) * | 2023-06-09 | 2023-07-25 | 正阳科技股份有限公司 | Cutting machine |
| CN117047336A (en) * | 2023-09-12 | 2023-11-14 | 山东高冷电器有限公司 | Intelligent welding system of refrigeration equipment |
| CN117047336B (en) * | 2023-09-12 | 2024-02-23 | 山东高冷电器有限公司 | Intelligent welding system of refrigeration equipment |
| CN117817036A (en) * | 2024-03-05 | 2024-04-05 | 安徽广银铝业有限公司 | Cutting equipment for aluminum profile machining and cutting method thereof |
| CN117817036B (en) * | 2024-03-05 | 2024-04-30 | 安徽广银铝业有限公司 | Cutting equipment for aluminum profile machining and cutting method thereof |
| CN118080649A (en) * | 2024-04-19 | 2024-05-28 | 龙口市福利铝制品厂 | Automatic channeling machine for aluminum bottle mouth |
| CN118080649B (en) * | 2024-04-19 | 2024-07-26 | 龙口市福利铝制品厂 | Automatic channeling machine for aluminum bottle mouth |
| CN118650211A (en) * | 2024-08-20 | 2024-09-17 | 沭阳金荣升机械有限公司 | Cutting device for machining automobile metal castings |
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