CN206200042U - Trailing type automatic alignment cutting machine - Google Patents

Abstract

The utility model discloses trailing type automatic alignment cutting machine, including bar straightening mechanism, directional feeding mechanism and the cutting mechanism processed for bar material, the cutting mechanism is arranged on a follow-up trolley, and the follow-up trolley is movably arranged on the guide rail along material conveying direction.Be arranged on cutting mechanism on follow-up trolley by the utility model, and follow-up trolley is movably arranged on guide rail, when cutting mechanism is sheared to material; without shutting down; cutting mechanism follows material to travel forward, and improves efficiency, and cutting mechanism drives return origin-location after completing shearing by follow-up trolley.

Description

Trailing type automatic alignment cutting machine

Technical field

The utility model is related to bar material process equipment, and in particular to a kind of trailing type automatic alignment cutting machine.

Background technology

Reinforcing rod after manufacture with preserve when, there is substantial amounts of stress in reinforcing bar, deform bar bending everywhere.Reinforcing bar makes With preceding, it is necessary to carry out straightening, stress everywhere is eliminated, obtain more straight reinforcing bar, the reinforcing bar after straightening is carried out as needed then Shear and be bent to and be variously-shaped.A kind of existing straightening method is that reinforcing bar is passed through between press nips, and pinch roller is from relative Direction carries out extruding straightening to reinforcing bar, and the pinch roller of reinforcing bar both sides is typically arranged as isosceles triangle, and the wheelbase between pinch roller is smaller, adjusts Straight effect is better；Meanwhile, bar straightening and cut simultaneously when carrying out, when reinforcing bar carries out cutting action and generally require pause sending Material, influences production efficiency.Under above-mentioned background, applicant develops trailing type automatic alignment cutting machine.

Utility model content

The purpose of this utility model is to provide trailing type automatic alignment cutting machine, be can be used for bar materials such as reinforcing bars certainly It is dynamic to carry out high-precision straightening and cut to process.

The technical solution adopted in the utility model is：

Trailing type automatic alignment cutting machine, including bar straightening mechanism, directional feeding mechanism for bar material straightening feeding, And the cutting mechanism at bar straightening mechanism and directional feeding mechanism rear is arranged on, the cutting mechanism is arranged on a follow-up trolley On, the follow-up trolley is movably arranged on the guide rail along material conveying direction, and the guide rail two ends are provided with mounting bracket plate, At least two parallel guide rails are installed, the follow-up trolley bottom is provided with what is moved along the rail between the mounting bracket plate Guide rail wheel.

Further, the bar straightening mechanism includes straightening mounting, and two or more position adjustable is equiped with the straightening mounting Pinch roller seat, pinch roller seat includes pedestal and the multiple pinch rollers being installed on pedestal, and the pinch roller is arranged along feed direction It is a straight line, correspondence pinch roller is provided with multiple bearings in the pedestal, the bearing is staggered and is present internal, and the pinch roller is worn In bearing, pinch roller front end is provided with V-groove or clamp ring for forming hoistway, and the pinch roller seat is oppositely arranged on bar shaped material Material both sides, the pinch roller on the pinch roller seat of bar material both sides is distributed in product word, and the V-groove/clamp ring of pinch roller is relative, constitutes clamping strip The hoistway of shape material.

Further, regulation slide is provided with the straightening mounting, regulating bolt is equiped with the regulation slide, adjusted Bolt one end connection pinch roller seat, the pinch roller seat is slidably arranged in regulation slide, is rotated and is pressed on regulating bolt regulation pinch roller seat Radial distance between wheel and bar material.

Further, the regulation slide is movably mounted on straightening mounting, what mobile regulation slide regulation pinch roller was constituted The size of hoistway.

In order to improve the precision and efficiency of cutting, the cutting mechanism rear is additionally provided with sizing mechanism of reinforcing.

The sizing mechanism of reinforcing include the chi bar being fixedly installed, be movably arranged on chi bar side switch valve pull plate and The hydraulic selector device of switch valve pull plate one end is arranged on, the hydraulic selector device includes switch valve shaft, and switch valve is pulled Plate connects the switch valve shaft of hydraulic selector device.

The scale collision block on bar material transport path is equiped with the chi bar, the scale collision block passes through scale Rotating shaft is connected with the scale shifting block of synchronous axial system, the scale shifting block connecting valve valve pull plate.

Further, the cutting mechanism is driven using hydraulic jack, and the hydraulic selector device is arranged on oil pump and cuts On oil circuit between organization hydraulic pressure oil cylinder, by switching being turned on and off for the action control of the valve shaft oil circuit.

Further, reset opener is provided with before the hydraulic selector device, the piston boit of the reset opener is just right The switch valve shaft of hydraulic selector device.

Reset controller is provided with before the hydraulic jack, the reset controller includes that control reset controller oil circuit is opened Disconnected control valve shaft, the control valve shaft is just to the piston boit of hydraulic jack.

The oil pump connects reset opener after passing sequentially through hydraulic selector device and reset controller.

Further, it is provided with reduction torsion spring in the scale rotating shaft.

The beneficial effects of the utility model are：

New bar straightening mechanism is equiped with trailing type automatic alignment cutting machine of the present utility model, pinch roller seat therein is logical The method for staggeredly installing bearing is crossed, the wheelbase reduced between pinch roller makes the wheelbase between pinch roller to be reduced to 3-6cm, between pinch roller It is relative by V-groove or clamp ring, the hoistway of clamping bar material is formed, bar material can be extruded from multiple directions, carry The effect of straightening high；Cutting mechanism is arranged on follow-up trolley simultaneously, and follow-up trolley is movably arranged on guide rail, works as cutting mechanism When being sheared to material, without shutting down, cutting mechanism follows material to travel forward, and improves efficiency, and cutting mechanism completes shearing Driven by follow-up trolley afterwards and return to origin-location.

Additionally, the precision in order to improve cutting, it is fixed also to be installed on trailing type automatic alignment cutting machine of the present utility model Chi mechanism, the bar material length of cutting can be automatically controlled by sizing mechanism of reinforcing, improve shear precision.

Brief description of the drawings

It is described further below in conjunction with accompanying drawing and example.

Fig. 1 is one of structural representation of trailing type automatic alignment cutting machine.

Fig. 2 is the two of the structural representation of trailing type automatic alignment cutting machine.

Fig. 3 is the overall appearance figure of bar straightening mechanism.

Fig. 4 is the cut-away view of bar straightening mechanism.

Fig. 5 is the structural representation of pinch roller seat（The first pinch roller）.

Fig. 6 is the structural representation of the first pinch roller.

Fig. 7 is the sectional view of pinch roller seat pedestal.

Fig. 8 is the sectional view of pinch roller seat.

Fig. 9 is the location diagram of pinch roller seat and bar material（Front）.

Figure 10 is the location diagram of pinch roller seat and bar material（Side）.

Figure 11 is second structural representation of pinch roller.

Figure 12 is the structural representation of pinch roller seat（Second pinch roller）.

Figure 13 is second hoistway schematic diagram of pinch roller formation.

Figure 14 is the structural representation of sizing mechanism of reinforcing.

Figure 15 is the schematic diagram of hydraulic selector device oil circuit control.

Figure 16 is the structural representation that cutting mechanism is arranged on guide rail.

Figure 17 is the schematic diagram that cutting mechanism follows steel bar motion.

Drawing reference numeral explanation：

1st, introducing mechanism；2nd, bar straightening mechanism；

3rd, directional feeding mechanism；4th, cutting mechanism；

5th, sizing mechanism of reinforcing；31st, motor；

32nd, driving pulley group；6th, reinforcing bar；

20th, pinch roller seat；21st, straightening mounting；

22nd, slide is adjusted；23rd, regulating bolt；

201st, pedestal；202nd, the first pinch roller；

2012nd, mounting hole；2013rd, chute；

2011st, axial trough；2021st, pinch roller bar；

2022nd, V-groove；203rd, bearing；

204th, Bearing housing；25th, hoistway；

202 ', second pinch roller；2023rd, clamp ring.

51st, chi bar；52nd, switch valve pull plate；

53rd, scale collision block；54th, scale rotating shaft；

541st, reduction torsion spring；542nd, limited block；

55th, scale shifting block；56th, hydraulic selector device；

57th, reset opener；58th, arm-tie guide wheel；

561st, valve shaft is switched；5611st, connecting plate；

562nd, oil-feed tank；563rd, oil groove is gone out；

564th, drain pan；7th, hydraulic jack；

8th, reset controller；81st, valve shaft is controlled；

41st, follow-up trolley；42nd, guide rail wheel；

43rd, guide rail；44th, mounting bracket plate.

Specific embodiment

The technique effect of design of the present utility model, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment It is a part of embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area The other embodiment that art personnel are obtained on the premise of not paying creative work, belongs to the model of the utility model protection Enclose.

The utility model provides the preferred embodiment of trailing type automatic alignment cutting machine, and the straightening cutting machine is mainly used Processed in the straightening feeding and cutting of the bar materials such as reinforcing bar.

Reference picture 1, Fig. 2, Fig. 1 and Fig. 2 show that trailing type automatic alignment of the present utility model is cut out with different view respectively The overall structure of off line.The trailing type automatic alignment cutting machine mainly includes the bar straightening mechanism 2, the orientation that are installed on mainframe Feed mechanism 3, and the cutting mechanism 4 at bar straightening mechanism 2 and the rear of directional feeding mechanism 3 is arranged on, set after the cutting mechanism 4 It is equipped with sizing mechanism of reinforcing 5.Further, the introducing mechanism 1 being made up of guide wheel group is additionally provided with before the bar straightening mechanism 2, for bar Shape material travel direction is guided, and it is smoothly entered bar straightening mechanism 2.

Further, the directional feeding mechanism 3 is provided with two, is separately positioned on the front and back of bar straightening mechanism 2.Institute State directional feeding mechanism 3 and include active-feeding wheel and driven drawing-inroller that clamping bar material is conveyed, set on mainframe Motor 31 is equipped with, the motor 31 drives active-feeding wheel to rotate, to bar by driving pulley group 32 and driving gear set Shape material carries out feeding.

In the utility model, the function that directional feeding mechanism 3 does not suspend, in order that cutting mechanism 4 need not when working Shut down, the cutting mechanism 4 is arranged on follow-up trolley 41, and as shown in figure 16, the bottom of the follow-up trolley 41 is provided with multiple Guide rail wheel 42, follow-up trolley 41 is movably arranged on guide rail 43 by guide rail wheel 42, and in the present embodiment, the guide rail 43 is fixed On two blocks of mounting bracket plates 44, two blocks of described mounting bracket plates 44 connect directional feeding mechanism 3 and sizing mechanism of reinforcing 5 respectively, Four guide rails 43 are provided between mounting bracket plate 44, wherein two guide rails 43 are located at the lower section of guide rail wheel 42, two are located at guide rail The top of wheel 42.Reference picture 17, when cutting mechanism 4 is sheared to material, without shutting down, cutting mechanism 4 follows material forward Motion, improves efficiency.

Further, resetting means, cutting mechanism 4 are also provided between the follow-up trolley 41 and mounting bracket plate 44 After completing shearing, resetting means drives follow-up trolley 41 to return to origin-location.

Fig. 3 and Fig. 4 respectively illustrate the overall appearance figure and internal structure of bar straightening mechanism 2, reference picture 3, Fig. 4, the tune Straight mechanism 2 carries out straightening, including straightening mounting 21 using hoistway superposed type, multigroup pinch roller seat is equiped with straightening mounting 21, often Group pinch roller seat includes at least two pinch roller seats 20 for being oppositely arranged on the both sides of bar material 6.It is provided with the straightening mounting 21 Moveable regulation slide 22, is equiped with regulating bolt 23, the one end of regulating bolt 23 connection pinch roller seat on the regulation slide 22 20, the pinch roller seat 20 is slidably arranged in regulation slide 22.As shown in figure 9, two pinch roller seats 20 being oppositely arranged distinguish position Bar material is clamped in isosceles triangle in the pinch roller on bar material both sides, pinch roller seat 20, straightening is carried out；When on rotation pinch roller seat 20 During the regulating bolt 23 of side, pinch roller seat 20 can be made to increase and to be separated, open hoistway 25.

Reference picture 5, the pinch roller seat 20 includes pedestal 201 and multiple first pinch rollers 202 being installed on pedestal 201. Mounting hole 2012 corresponding with regulating bolt 23 is provided with the pedestal 201, the side wall of pedestal 201 is provided with chute 2013, adjusted The slide rail coordinated with chute 2013 is provided with section slide 22, pinch roller seat 20 is slidably mounted on regulation slide 22 by chute 2013 On.The first pinch roller 202 on the pinch roller seat 20 is arranged as a straight line.Reference picture 6, first pinch roller 202 includes being installed on Pinch roller bar 2021 in pedestal 201, the front end of the first pinch roller 202 is provided with V-groove 2022, additionally, the front end of the first pinch roller 202 may be used also Gradually slotted with being provided with other, such as deep-slotted chip breaker or U-type groove.

Reference picture 7, Fig. 7 shows and be provided with the internal view of pedestal 201, the pedestal 201 multiple axles arranged side by side Groove 2011, offers the bearer ring for installing bearing 203 on the axial trough 2011, the bearer ring on adjacent axial trough 2011 interlocks Set.Reference picture 8, Fig. 8 shows the internal view of the pinch roller seat 20 for being provided with the first pinch roller 202, and the bearing 203 is installed It is also to be staggered in bearer ring, the pinch roller bar 2021 of the first pinch roller 202 is arranged in axial trough 2011 through bearing 203.Axle The rear portion of groove 2011 is provided with bearing gland 204.

Reference picture 9, Figure 10, Fig. 9 and Figure 10 show the position of pinch roller seat 20 and bar material 6 from front and side respectively Relation.The pinch roller seat 20 is oppositely arranged on the both sides of bar material 6, and the pinch roller on pinch roller seat 20 clamps bar shaped material in isosceles triangle Material, the V-groove 2022 of the pinch roller on two pinch roller seats 20 is relative, constitutes the hoistway 25 of clamping bar material 6.Bar material 6 from Passed through in hoistway 25.Rotate regulating bolt 23 when, adjustable pinch wheel seat 20 on pinch roller and bar material 6 between radial direction away from From so as to open or close hoistway 25, also can adjust the diameter of hoistway 25；And the mobile regulation adjustable pinch wheel structure of slide 22 Into hoistway 25 diameter, adapt to the bar material of different line footpaths.

The invention also discloses another implementation of pinch roller seat 20, reference picture 11 to Figure 13, Figure 11 is second The structural representation of pinch roller 202 ', Figure 12 shows the structural representation using the pinch roller seat 20 of the second pinch roller 202 ', Tu13Shi The schematic diagram of hoistway 25 that second pinch roller 202 ' is formed.In the present embodiment, the front end of second pinch roller 202 ' is provided with clamp ring 2023, instead of original V-groove 2022.The clamp ring 2023 of the second pinch roller 202 ' on two pinch roller seats 20 is relative, coordinates pinch roller Bar 2021 constitutes hoistway 25.Advantage of this embodiment is that processing more facilitates.

In the present embodiment, in order to improve the precision and efficiency of cutting, the rear of the cutting mechanism 4 is additionally provided with shear gauge Structure 5.Reference picture 14, Figure 14 is the structural representation of sizing mechanism of reinforcing, and the sizing mechanism of reinforcing 5 includes the chi bar 51 being fixedly installed, chi The side of bar 51 is provided with the switch valve pull plate 52 of activity, and the switch valve pull plate 52 can be front and rear to movement.Set on chi bar 51 Multiple rotating shaft mounting holes are equipped with, the spacing distance of the rotating shaft mounting hole is equal, and scale rotating shaft 54 is installed by rotating shaft mounting hole On chi bar 51, and the installation site of length adjustment scale rotating shaft 54 can be cut according to the requirement of bar material 6.The scale turns The one end of axle 54 is provided with scale collision block 53, and scale collision block 53 is located on the transport path of bar material 6, and the other end of scale rotating shaft 54 sets It is equipped with the scale shifting block 55 with the synchronous axial system of scale collision block 53.The rotating shaft of correspondence chi bar 51 is installed in the switch valve pull plate 52 Hole is provided with multiple bayonet sockets, and the scale shifting block 55 holding dials scale on one of bayonet socket of switch valve pull plate 52 Drawing switch valve pull plate 52 when block 55 is rotated, the lower section of switch valve pull plate 52 is provided with arm-tie guide wheel 58,58 pairs, arm-tie guide wheel The movement of switch valve pull plate 52 is oriented to.The front end of switch valve pull plate 52 is provided with hydraulic selector device 56, hydraulic pressure Switching device 56 includes switch valve shaft 561, and connecting plate 5611 is fixedly installed on switch valve shaft 561, and switch valve pull plate 52 connects It is connected on connecting plate 5611, Drawing switch valve shaft 561 is acted when switch valve pull plate 52 is acted.In the hydraulic selector device 56 It is provided with oil-feed tank 562, goes out oil groove 563 and drain pan 564, the connection oil pump of oil-feed tank 562 goes out the output hydraulic pressure of oil groove 563 oil；Institute The opening being provided with switch valve shaft 561 for connecting above-mentioned oil groove is stated, switch valve shaft 561 is located in hydraulic selector device 56 When, oil-feed tank 562 and going out oil groove 563 and connected from different drain pans 564 respectively, switch valve shaft 561 stretches out hydraulic selector device After 56, oil-feed tank 562 is connected with oil groove 563 is gone out.Reset opener 57 is additionally provided with before the hydraulic selector device 56.

In order that scale collision block 53 and scale shifting block 55 reset after acting, and it is to prepare next time, the scale turns Reduction torsion spring 541 is provided with axle 54, after cutting bar material 6, scale rotating shaft 54 rotates in the presence of reduction torsion spring 541, Scale collision block 53 and scale shifting block 55 is driven to reset.Further, limited block 542 is additionally provided with the scale rotating shaft 54, to fixed The rotational angle of chi collision block 53 is limited.

Reference picture 15, Figure 15 is the schematic diagram of the oil circuit control of hydraulic selector device 56.Cutting mechanism of the present utility model 4 is adopted Driven with hydraulic jack 7, hydraulic selector device 56 is arranged on the oil circuit between oil pump and the hydraulic jack 7 of cutting mechanism 4.Work as bar When shape material 6 reaches default sheared length, the front end crash scale collision block 53 of bar material 6, scale collision block 53 is turned by scale Axle 54 drives scale shifting block 55 synchronously to rotate backward, and the Drawing switch valve pull plate 52 of scale shifting block 55 is moved rearwards by, and switchs valve shaft 561 stretch out.After switch valve shaft 561 stretches out, oil-feed tank 562 is connected with oil groove 563 is gone out, and oil pump is by hydraulic selector device 56 to sanction The fuel feeding of hydraulic jack 7 of shearing machine structure 4, the action of cutting mechanism 4 is cut.

Further, reset opener 57 is provided with before the hydraulic selector device 56, the piston boit of reset opener 57 is just To the switch valve shaft 561 of hydraulic selector device 56.Reset controller 8 is provided with before the hydraulic jack 7, reset controller 8 Oil inlet end connection hydraulic selector device 56 goes out oil groove 563, the oil outlet end connection reset opener 57 of reset controller 8.It is described Control valve shaft 81 is provided with reset controller 8, the state of the control action switch back of valve shaft 81 controller 8 controls valve shaft 81 Just to the piston boit of hydraulic jack 7, stage clip is provided between control valve shaft 81 and reset controller 8.Usually control valve shaft 81 exists Stretched out in the presence of stage clip, reset controller 8 is blocking state.After hydraulic selector device 56 is turned on, oil pump is to hydraulic jack 7 Fuel feeding, the piston boit of hydraulic jack 7 is forward extended out in the presence of hydraulic pressure, and ejection control valve shaft 81, control valve shaft 81 retraction is answered In level controller 8, reset controller 8 enters conducting state, and hydraulic oil enters reset opener 57 through reset controller 8, drives The piston boit of reset opener 57 is forward extended out, and the switch valve shaft 561 of ejection hydraulic selector device 56 resets, in cutting mechanism 4 Oil circuit is automatically shut down after completing shearing.

Trailing type automatic alignment cutting machine of the present utility model employs new bar straightening mechanism 2, the and of directional feeding mechanism 3 Sizing mechanism of reinforcing.Method of the bar straightening mechanism 2 by staggeredly installing bearing 203 in pinch roller seat 20, the axle for effectively reducing between pinch roller Away from the wheelbase between pinch roller can be reduced to 3-6cm, relative by V-groove 2022 or clamp ring 2023 between pinch roller, form clamping bar shaped The hoistway 25 of material 6, can extrude bar material 6 from multiple directions, improve the effect of straightening；Cutting mechanism is installed simultaneously On follow-up trolley, follow-up trolley is movably arranged on guide rail, when cutting mechanism is sheared to material, without shutting down, is cut out Shearing machine structure follows material to travel forward, and improves efficiency.Sizing mechanism of reinforcing 5 can automatically control the length of bar material 6 of cutting, and can be certainly It is dynamic to reset, improve the automaticity of shear precision and equipment.

The above, simply preferred embodiment of the present utility model, the utility model is not limited to above-mentioned implementation Mode, as long as it reaches technique effect of the present utility model with identical means, should all belong to protection domain of the present utility model.

Claims (9)

1. trailing type automatic alignment cutting machine, it is characterised in that：Including the bar straightening mechanism for bar material straightening feeding, orientation Feed mechanism, and the cutting mechanism at bar straightening mechanism and directional feeding mechanism rear is arranged on, the cutting mechanism is arranged on one On follow-up trolley, the follow-up trolley is movably arranged on the guide rail along material conveying direction, and the guide rail two ends are provided with peace Dress supporting plate, is provided with least two parallel guide rails between the mounting bracket plate, the follow-up trolley bottom is provided with edge The guide rail wheel of guide rail motion；Resetting means is provided between the follow-up trolley and mounting bracket plate, cutting mechanism completes shearing Afterwards, resetting means drives follow-up trolley to return to origin-location.

2. trailing type automatic alignment cutting machine according to claim 1, it is characterised in that：The bar straightening mechanism includes straightening Mounting, is equiped with the pinch roller seat of two or more position adjustable on the straightening mounting, the pinch roller seat includes pedestal and installing Multiple pinch rollers on pedestal, the pinch roller is arranged as a straight line along feed direction, and correspondence pinch roller is provided with many in the pedestal Individual bearing, the bearing is staggered and is present internal, and the pinch roller is installed in bearing, and pinch roller front end is provided with for forming well The V-groove or clamp ring in road, the pinch roller seat are oppositely arranged on bar material both sides, the pinch roller on the pinch roller seat of bar material both sides It is distributed in product word, the V-groove/clamp ring of pinch roller is relative, constitutes the hoistway of clamping bar material.

3. trailing type automatic alignment cutting machine according to claim 2, it is characterised in that：It is provided with the straightening mounting Regulation slide, is equiped with regulating bolt on the regulation slide, regulating bolt one end connection pinch roller seat, the pinch roller seat is slided and set Put in regulation slide, rotate the radial distance between regulating bolt regulation pinch roller seat upper pressure wheel and bar material.

4. trailing type automatic alignment cutting machine according to claim 3, it is characterised in that：The removable peace of regulation slide On straightening mounting, the size of the hoistway that mobile regulation slide regulation pinch roller is constituted.

5. according to any described trailing type automatic alignment cutting machine of Claims 1-4, it is characterised in that：The cutting mechanism Rear is provided with sizing mechanism of reinforcing.

6. trailing type automatic alignment cutting machine according to claim 5, it is characterised in that：The sizing mechanism of reinforcing includes fixing The chi bar of setting, the switch valve pull plate for being movably arranged on chi bar side and the hydraulic pressure for being arranged on switch valve pull plate one end Switching device, the hydraulic selector device includes switch valve shaft, and switch valve pull plate connects the switch valve shaft of hydraulic selector device,

The scale collision block on bar material transport path is equiped with the chi bar, the scale collision block passes through scale rotating shaft It is connected with the scale shifting block of synchronous axial system, the scale shifting block connecting valve valve pull plate.

7. trailing type automatic alignment cutting machine according to claim 6, it is characterised in that：The cutting mechanism uses hydraulic pressure Hydraulic oil cylinder driving, the hydraulic selector device is arranged on the oil circuit between oil pump and cutting mechanism hydraulic jack, by switch valve The action control of the axle oil circuit is turned on and off.

8. trailing type automatic alignment cutting machine according to claim 7, it is characterised in that：Set before the hydraulic selector device Be equipped with reset opener, the piston boit of the reset opener just to the switch valve shaft of hydraulic selector device,

Reset controller is provided with before the hydraulic jack, the reset controller includes what control reset controller oil circuit cut-off Control valve shaft, the control valve shaft just to the piston boit of hydraulic jack,

The oil pump connects reset opener after passing sequentially through hydraulic selector device and reset controller.

9. according to any described trailing type automatic alignment cutting machine of claim 6 to 8, it is characterised in that：The scale rotating shaft On be provided with reduction torsion spring.