CN2194779Y - Pneumatic fling sawing device - Google Patents

Abstract

The utility model relates to a pneumatic flying sawing device, particularly the pneumatic flying sawing device which cuts a steel pipe into steel pipes with fixed length in the state of the continuous linear motion of the steel pipe. The utility model comprises a base body, a trackway, a saw vehicle driven by a cylinder, wherein, a saw cutting mechanism and a workpiece gripping mechanism are arranged on the saw vehicle. The utility model is characterized in that a friction roller which rotates with a workpiece is arranged on the workpiece in the front of the saw vehicle; an iron stopper which is with the saw vehicle is arranged on the saw vehicle; three position detecting switches are arranged correspondingly to the running track of the iron stopper. The pneumatic flying sawing device can effectively increase scale precision of cutting the steel pipe.

Description

Pneumatic fling sawing device

The utility model relates to a kind of flying saw control device, especially for making the flying saw device that continuous straight-line Tube Cutting becomes fixed length in the metallurgy industry.

At present, on the steel pipe industry production Tube Cutting being become fixed length, employed to fly to saw major part be to adopt the compressed air source, by air cylinder driven, to fly to saw cost lower because of this class, safeguard simply, thus be widely used, but because the factor affecting such as wearing and tearing of steel pipe speed, compressed-air actuated variation and clamping device, its sizing accuracy is not ideal enough, and general scale error is ± 20～25 millimeters.

For this reason, the purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of Comprehensive Control of passing through each link in the sawing process is provided, and the limits of error is fixed in the small range, improves the flying saw device of its sizing accuracy.

The technical scheme that realizes the utility model purpose is a kind of flying saw that cuts elongated workpiece, especially make to be cut under the continuous rectilinear motion state flying saw device of fixed length at steel pipe, comprise matrix, matrix is provided with the track parallel with workpiece, and at the reciprocating saw car of air cylinder driven lower edge track, on the saw car saw cutting mechanism is housed, workpiece grip mechanism, its special character is that the workpiece of saw car one side is provided with friction roller with its rotation to survey the length and the speed of workpiece, and the saw car is provided with relative static buting iron with it, is provided with three position detecting switch that send signal according to the buting iron position accordingly successively with the buting iron running orbit.

And three position detecting switch link through interface board and PC Programmable Logic Controller.

And friction roller is connected with grating pulse division board by grating encoder.

And three position detecting switch are near switch.

Because the buting iron of saw car is relative static with the saw car, then position detecting switch is actually according to the operation conditions of saw car and sends signal, by interface board signal is passed to the PC Programmable Logic Controller, and be positioned at friction roller on the saw car one side workpiece and coupled grating encoder, grating pulse division board can be used to measure the speed of workpiece and the Workpiece length by saw kerf, like this under the situation of knowing work speed and length, not only can preset out the saw car from starting to the error that produces during this period of time synchronously with workpiece, and the signal that sends according to position detecting switch of PC Programmable Logic Controller is realized the control to flying to saw, therefore can guarantee under each mechanism's normal operating conditions that the saw car reaches synchronous with workpiece in the error range of regulation, sawing workpieces, guarantee the sizing accuracy of workpiece, as required, also can set up the indication of reporting to the police, when breaking down or Workpiece length report to the police when having surpassed cut lengths, so that Artificial Control also can reach the purpose of guaranteeing the workpiece sizing accuracy.

Below with reference to accompanying drawing the utility model is described in further detail.

Accompanying drawing is overall structure figure of the present utility model.

By accompanying drawing as can be known; flying saw device described in the utility model is by the industrial computer that flies to saw part and be used to control; interface board 32; PC Programmable Logic Controller 33 and operating desk 36 are formed; button on the operating desk 36 is mainly used in the control power supply and leads to; disconnected; motor opens; stop etc.; interface board 34 is located between magnetic valve group 35 and the PC Programmable Logic Controller 33; only be used for protecting the relay contact of PC Programmable Logic Controller 33; fly to saw the track 10 parallel with making continuous straight-line workpiece 1 arranged on the matrix 11 of part; saw car 26 drives lower edge track 10 at saw car cylinder 12 and moves back and forth; starting end at saw car 26 is provided with a boosting; bounce cylinder 21; stiction when being used for overcoming 26 startings of saw car and the impulsive force when returning; workpiece grip mechanism 28 on the saw car 26 is made up of two jaws 9; skid with minimizing; saw cutting mechanism 27 is by saw arm 5; saw blade 29; and sawing limit switch 7; lifting saw limit switch 8 forms; lift; the action that falls to sawing is finished by cylinder 6; the action of clamping work pieces also is to be finished by cylinder (being positioned at saw car 26 back); 29 of saw blades are by motor 4 driven rotary; in order to reduce the error between Workpiece length and the fixed length as far as possible; this flying saw device is provided with speed and the length of surveying workpiece 1 with the friction roller 2 of its rotation on the workpiece 1 in saw car 26 the place aheads; and saw car 26 is provided with and saws car 26 relative static buting iron 24; be provided with three position detecting switch 22 that send signal according to buting iron 24 positions to PC Programmable Logic Controller 33 accordingly successively with buting iron 24 running orbits; 23; 25; three position detecting switch 22; 23; 25 can select for use sensitivity higher near switch; distance is H between position detecting switch 22 and the position detecting switch 25; H is a definite value amount of setting according to distinct device factor separately; position detecting switch 23 between them, position detecting switch 22; 23; 25 by being connected with PC Programmable Logic Controller 33 behind the interface board 32, and friction roller 2 is connected with grating pulse division board 14 by grating encoder 3; industrial computer part present embodiment is provided with seven templates; template 16 is Switching Power Supply plates, and STD8605 plate 15 is used for regularly and to all grating step-by-step countings, STD8511 plate 19 is connected with PC Programmable Logic Controller 33 by interface board 32 backs; all electrical links that can isolate controlled scene and PC Programmable Logic Controller 33 and industrial computer effectively; the antijamming capability of raising system, STD8910 plate 18 are the filtering templates that reset, and can improve the influence of noise on the bus; and STD8801 plate 17 is a CPU board; be the maincenter of industrial computer, realize calculating and control to flying to saw, the template 20 in the industrial computer is data inputs; output buffering and address decoding plate; be used for reading in 8421 code-disc switches 30; 31 Workpiece lengths of setting; as required, it also can play Workpiece length; speed; the effect that the output of data such as radical shows, and break down in some mechanism; the effect of having reported to the police when Workpiece length has surpassed cut lengths; in the course of work; the friction roller 2 that is pressed on the workpiece 1 rotates with making continuous straight-line workpiece 1, drives grating encoder 3, will become pulse number input optical isolation board 14 to STD8605 plates 15 to count and test the speed by the Workpiece length corresponding conversion of saw kerf; as the Workpiece length L by saw kerf during near the cut lengths that is provided with; STD8801 plate 17 begins to calculate saw car correction △ L, and △ L is a two positions sense switch 22; distance H between 25 and steel pipe speed and sawed car 26 last time by two positions sense switch 22; the used time product of distance between 25 poor is when △ L and L sum equal fixed length; STD8511 plate 19 just sends signal by interface board 32 to PC Programmable Logic Controller 33; then by PC Programmable Logic Controller 33 control boosting cylinders 21; saw car cylinder 12 and gripper cylinder move simultaneously, and saw car 26 advances, jaw 9 beginning holding workpieces 1; meanwhile; STD8605 plate 15 picks up counting, and when the 24 process position detecting switch 23 of the buting iron on the saw car 26, position detecting switch 23 sends signal; arrive PC Programmable Logic Controller 33 by interface board 32; control saw arm 5 begins to fall, and saw car 26 moves on, when buting iron 24 in-position sense switches 25; workpiece 1 is held tightly and saw blade 27 incision workpiece 1; the beginning sawing, saw car 26 reaches synchronously with workpiece 1 speed, simultaneously position detecting switch 25 also process interface board 32 send signal to industrial computer; writing time; calculate positive quantity △ L so that repair during root workpiece 1 under the sawing, after sawing put in place, sawing limit switch 7 signaled to PC controller 33 by interface board 32; control cylinder 6 is lifted saw; lift cut the position after, lift saw limit switch 8 and also signal to PC controller 33, control jaw 9 pine folder by interface board 32; saw car 26 returns under saw car cylinder 12 and 21 effects of boosting bounce cylinder; when it turned back to starting point, position detecting switch 22 signaled to industrial computer, allowed the sawing of root workpiece down.In order when grating encoder 3 or industrial computer break down, not influence production, present embodiment has still kept baffle plate scale switch 13, when breaking down, can cut off getting in touch between industrial computer and the PC Programmable Logic Controller 33, produce the enabling signal of sawing car 26 by baffle plate scale switch 13, PC Programmable Logic Controller 33 is independently finished the control to flying to saw.What used industrial computer template all adopted in the present embodiment is to purchase part, produce as Electronic Instruments Plant, Beijing Polytechnicall Univ., because they and PC Programmable Logic Controller 33 are prior art, and it all is the common sense that this professional and technical personnel possessed that circuit wherein connects, so repeat no more in specification.

Claims (4)

1, a kind of flying saw device that cuts elongated workpiece, especially make to be cut under the continuous rectilinear motion state flying saw device of fixed length at steel pipe, comprise matrix [11], matrix [11] is provided with the track [10] parallel with workpiece [1], and at cylinder [12] driving lower edge track [10] reciprocating saw cars [26], on the saw car [26] saw cutting mechanism [27] is housed, workpiece grip mechanism [28], it is characterized in that: the workpiece [1] of saw car [26] one sides is provided with friction roller [2] with its rotation to survey the speed and the length of workpiece [1], and the saw car [26] be provided with relative static buting iron with it [24], be provided with three position detecting switch [22 that send signal according to buting iron [24] position to control member accordingly successively with buting iron [24] running orbit, 23,25].

2, flying saw device according to claim 1 is characterized in that: three position detecting switch ［ 22,23,25 ］ link through interface board ［ 32 ］ and PC Programmable Logic Controller ［ 33 ］.

3, flying saw device according to claim 1 and 2 is characterized in that: friction roller ［ 2 ］ connects with grating pulse division board ［ 14 ］ by grating encoder ［ 3 ］.

4, flying saw device according to claim 3 is characterized in that: three position detecting switch ［ 22,23,25 ］ are near switch.

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