CN207788927U - A kind of extension bar parallel type lineation device - Google Patents

Abstract

The utility model discloses a kind of extension bar parallel type lineation device, including workbench, it is arranged at intervals with multiple sliding rails that can be moved and be mutually parallel on the table on workbench, the clamping device for fixing workpiece is installed on sliding rail；It is provided with liner agency at the center of the workbench, liner agency includes the knife rest perpendicular to the sliding rail and above sliding rail, blade pawl identical with the sliding rail quantity is installed, the blade pawl can be along the axial movement perpendicular or parallel to the sliding rail on knife rest.Utility model device has many advantages, such as that intelligence degree is high, safe and reliable, accuracy is high, efficient, product quality is high, at low cost, time saving and energy saving, the scope of application is wider.

Description

A kind of extension bar parallel type lineation device

Technical field

The utility model is related to technical fields of mechanical processing, and in particular to a kind of extension bar parallel type lineation device.

Background technology

Currently, with the development of science and technology most of enginerring works realize automation substantially on mold processing method Or it is semi-automatic.Column acts on as the main support member of hydraulic support and is to bear roof toad, column, which generally has, singly to be stretched Two kinds of contracting and double-telescopic upright post, have the characteristics that high reliability, simple in structure, processing cost is low, magnification is big.Extension bar conduct The major part of column, processing technology require stringent；And cross and be used as the most important step process of extension bar, it is necessary to assure scribing line The accuracy of positioning.

However, most of column enginerring works still use artificial crossed or armstrong's patent in terms of extension bar scribing process Scribing line, there are many deficiencies for these traditional scribing line techniques：1. worker is in scribing line, extension bar is not fixed easily on face plate Securely, it may occur that phenomena such as rolling, sliding causes origin reference location inaccurate, and scribing line precision reduces.It often repeats to draw Line takes time and effort, and increases enterprise's processing cost.2. extension bar belongs to larger rod workpieces, size is larger, and weight is big, rolls When phenomena such as dynamic, sliding, it may occur however that the production accidents such as injure, squeeze by a crashing object.3. worker crosses, once can only generally cross single-piece Extension bar, scribing line efficiency is low, reduces the performance of enterprises.4. there are origin reference locations to be not allowed for artificial crossed or armstrong's patent hatched manner Really, lead to error increase of crossing.5. artificial crossed or machinery scribing line intelligence degree are low.6. product qualification rate of crossing is relatively low.

Invention content

The purpose of this utility model is to provide a kind of extension bar parallel type lineation device, to solve existing extension bar scribing line Precision present in process is low, efficiency is low, qualification rate is low, safety is poor and it is of high cost the problems such as.

In order to realize that above-mentioned task, the utility model use following technical scheme：

A kind of extension bar parallel type lineation device, including workbench, be arranged at intervals on workbench it is multiple can be in workbench Upper movement and the sliding rail being mutually parallel are equipped with the clamping device for fixing workpiece on sliding rail；The center of the workbench Place is provided with liner agency, and liner agency includes the knife rest perpendicular to the sliding rail and above sliding rail, is equipped on knife rest Blade pawl identical with the sliding rail quantity, the blade pawl can be along the axial movements perpendicular or parallel to the sliding rail.

Further, it is provided with a pair of of erecting bed on the workbench, mounting hole is offered on erecting bed, passes through described Mounting hole be provided with leading screw, the servo electricity of one end of leading screw by yielding coupling, contact bearing with installation on the table Machine connects；It is equipped with sliding block on leading screw between a pair of of erecting bed, the first hydraulic cylinder is installed on sliding block, it is described Knife rest is mounted on the output shaft of the first hydraulic cylinder, and knife rest is perpendicular to the sliding rail.

Further, it is provided with pressure sensing between the blade pawl and knife rest.

Further, the end installation position sensor and encoder of the leading screw.

Further, the blade pawl is connected and composed by the blade of two arcs from middle part, and blade pawl is right-angled intersection Arcuate structure.

Further, the clamping device includes the first holding frame and the second holding frame, wherein the first holding frame is fixed It is provided with positioning plate on one end of the sliding rail, the first holding frame；Second holding frame can be along the axial movement of sliding rail.

Further, first holding frame includes symmetrically arranged fixture block, from the top surface of fixture block to the side of fixture block Direction is machined with the clamping face of arc, and the bottom of fixture block is provided with the identical card slot in multiple intervals；The positioning plate is located at folder The side in face is held, the axial direction of the sliding rail upper edge sliding rail is equipped with multiple fixture blocks with card slot cooperation at equal intervals.

Further, the end of the workbench is equipped with the second hydraulic cylinder, on the output shaft of the second hydraulic cylinder Passage plate moving up and down is installed；Card pipe, the side of card pipe are vertically installed on the output shaft of second hydraulic cylinder Face is provided in the axial direction with bar-shaped trough, has slide-bar, slide-bar to be pushed away with described by the connecting plate across the bar-shaped trough inside card pipe Move plate connection；The bottom of the card pipe is provided with electric telescopic rod, and the axial direction and card pipe of electric telescopic rod are axially parallel；It is described The output shaft of electric telescopic rod connect with the passage plate by connecting rod.

Further, it is provided with the first displacement sensor on first hydraulic cylinder, be arranged on the second hydraulic cylinder There is second displacement sensor；First hydraulic cylinder, the second hydraulic cylinder pass through the first solenoid directional control valve, the second electromagnetic switch respectively Valve is connected to hydraulic pump.

Further, the servo motor, the first hydraulic cylinder, the second hydraulic cylinder pass through a PLC controller It is controlled.

The utility model has following technical characterstic：

The positioning and marking device of the utility model can realize accurately scribing line positioning, and the stringent control of scribing line error is in ruler Within the scope of very little tolerance standard, accuracy low problem when overcoming artificial crossed；By movable workpiece grip mechanism, prevent from adding Phenomena such as rolling, sliding, occurs in scratching process for stock, and realizes the scribing line of multiple product, is not limited solely to extension bar. Scribe fiducials are determined by position sensor and displacement sensor, realize positioning marking, solve when scribe fiducials determine and deposit Error；It takes parallel way joint scribing line operating type to realize once scribing line more than one piece product, improves scribing line efficiency, save and add Work cost；Whole process using automatically controlling operation, greatly reduce due to worker's operation is lack of standardization and the probability for the generation that causes the accident, Safety is higher.The device is easy to operate, and intelligence degree is higher, requires staff's technology relatively low.In general, this reality With new device, have safe and reliable, accuracy is high, efficient, product quality is high, at low cost, the time saving and energy saving, scope of application compared with The advantages that wide.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model：

Fig. 2 is the positive structure diagram of the utility model：

Fig. 3 is the overlooking structure diagram of the utility model：

Fig. 4 is the right side structural representation of the utility model：

Fig. 5 is the structural schematic diagram of the first holding frame part；

Fig. 6 is the side structure schematic view of the second hydraulic cylinder and passage plate part；

Fig. 7 is the overlooking structure diagram of card tube portion；

Fig. 8 is PLC control function schematic diagrams in the utility model embodiment；

Figure label represents：1-workbench；2-servo motors；3-sliding rails；4-clamping devices；5-positioning plates；6— Workpiece；7-blade pawls；8-knife rests；9-position sensors；10-encoders；11-leading screws；12-the second holding frame；13— First holding frame；14-elastic shaft joints；15-nuts and washer；16-contact bearings；17-pressure sensors；18-the first Hydraulic cylinder；19-the first displacement sensor；20-the first solenoid directional control valve；21-fixture blocks；22-the second solenoid directional control valve； 23-the second hydraulic cylinder；24-passage plates；25-second displacement sensors, 26-clamping faces, 27-card slots, 28-fixture blocks, 29-card pipes, 30-electric telescopic rods, 31-connecting rods, 32-connecting plates, 33-slide-bars.

Specific implementation mode

As shown in Fig. 1 to 5, the utility model discloses a kind of extension bar parallel type lineation device, including workbench 1, works Make to be arranged at intervals with multiple sliding rails 3 that can be moved and be mutually parallel on workbench 1 on platform 1, be equipped on sliding rail 3 for fixing The clamping device 4 of workpiece 6 (extension bar)；Liner agency is provided at the center of the workbench 1, liner agency includes vertical In being equipped with blade pawl 7 identical with 3 quantity of the sliding rail on the sliding rail 3 and the knife rest 8 above the sliding rail 3, knife rest 8, The blade pawl 7 can be along the axial movement perpendicular or parallel to the sliding rail 3.

Workbench 1 in the utility model, optionally, for the rectangular platform that a upper surface is plane；It is installed on platform There is the sliding rail 3 of multiple bar shapeds, and sliding rail 3 can move on workbench 1；Specifically, it is spaced apart in the upper surface of workbench 1 Equipped with a plurality of regulating tank being mutually parallel, it is preferable that the spacing of regulating tank is identical, in order to preferably coordinate with liner agency； The bottom of sliding rail 3 is assemblied in by sliding shoe in regulating tank, so that sliding rail 3 can be moved along regulating tank.Sliding rail 3 uses The structure design of adjustable position, allows in actual industrial process, in order to coordinate with the installation site of 6 hoisting mechanism of workpiece Etc. factors, need the installation site of sliding rail 3 determines according to actual conditions, and after 3 location determination of sliding rail is good, sliding rail 3 led to Bolt is crossed to be fixed on workbench 1.

Clamping device 4 is installed so that workpiece 6 to be fixed on sliding rail 3, as shown in Fig. 1,4 and 5, clamping device 4 is used for The both ends of fixed workpiece 6, enable workpiece 6 effectively to be fixed, in order to subsequent scribing line.It crosses and is realized by liner agency, Specifically, this programme is at the middle part of workbench 1, i.e., installs liner agency at the center of all sliding rails 3, be mounted on the mesh of center Be to make 8 left-right balance of knife rest, to make each blade pawl 7 preferably can contact and cross with workpiece 6.Have on liner agency The knife rest 8 of one bar shaped, knife rest 8 are located at 3 top of all sliding rail, the blade pawl 7 of 8 bottom of knife rest installation be used for workpiece 6 into Row scribing line.

In actual use, position of the sliding rail 3 on workbench 1 is adjusted and fixed first, is then adjusted and is fixed again Position of the clamping device 4 on sliding rail 3, to make all clamping devices 4 be mutually aligned, such workpiece 6 is placed on clamping machine Position after on structure 4 can be also mutually aligned.Using placing one in the hoisting mechanism respectively clamping device 4 on each sliding rail 3 Then a workpiece 6 moves downward knife rest 8, until after blade pawl 7 contacts with 6 surface of workpiece, then make blade pawl 7 along being parallel to Sliding rail 3 is axially moved, you can is crossed on the surface of workpiece 6 by blade pawl 7.Due to using parallel type knot in this programme Structure simultaneously grips workpiece 6, it is thus possible to realize accurate positioning of crossing, workpiece 6 is avoided to occur rolling, slide now As the primary scribing line that can carry out multiple workpiece 6 is effectively improved scribing line efficiency.

As shown in Fig. 1, Fig. 4 and Fig. 6, it is provided with a pair of of erecting bed on the workbench 1, installation is offered on erecting bed Hole is provided with leading screw 11 across the mounting hole, has bearing between mounting hole and leading screw 11；One end of the leading screw 11 is logical Cross yielding coupling 14, contact bearing 16 is connect with the servo motor 2 on workbench 1；A pair of of erecting bed it Between leading screw 11 on be equipped with sliding block, sliding block is screw-thread fit with leading screw 11, and slider bottom has T-shaped block, is assemblied on workbench 1 In the T-slot opened up so that leading screw 11 rotate when, sliding block can along the axial movement of leading screw 11 and itself is not rotated；On sliding block First hydraulic cylinder 18 is installed, the knife rest 8 is mounted on the output shaft of the first hydraulic cylinder 18, and knife rest 8 is perpendicular to institute The sliding rail 3 stated, and knife rest 8 is parallel with 1 upper surface of workbench.Above structure is the driving mechanism of blade pawl 7, to realize blade Pawl 7 is contacted with workpiece 6 and is crossed on 6 surface of workpiece.Specifically, knife rest 8 is adjusted perpendicular using the first hydraulic cylinder 18 The upward position of histogram, so that blade pawl 7 is contacted with 6 surface of workpiece；Using the position of the rotation adjusting slider of leading screw 11, and Sliding block will be axially moveable on 6 surface of workpiece to cross when moving with cutting blade pawl 7.When scribing line finishes, the first liquid is utilized Compressing cylinder 18 rises knife rest 8, so that blade pawl 7 is disengaged with 6 surface of workpiece, then removes workpiece 6.The blade Pawl 7 is connected and composed by the blade of two arcs from middle part, and blade pawl 7 is right-angled intersection arcuate structure；Optionally, on blade pawl 7 It is detachably provided with dyeable right-angled intersection cambered blade set.The distance between 7 center of adjacent knife blades pawl and the phase The distance between 3 center of adjacent sliding rail is identical, so that each blade pawl 7 can be completely right with 6 position of workpiece on sliding rail 3 below It answers.Nut and washer 15 are provided on leading screw 11, to the sliding block on adjusting screw 11.

As shown in figure 4, being provided with pressure sensing between the blade pawl 7 and knife rest 8.The effect of pressure sensor 17 It is that, when knife rest 8 moves downward, if blade pawl 7 is contacted with 6 surface of workpiece, then pressure sensor 17 can measure pressure signal, leads to It crosses the pressure signal and can determine that 7 position of blade pawl is suitable, then stop the first hydraulic cylinder 18 of driving, then drive servo electric Machine 2, you can blade pawl 7 is made to start to cross.Another effect of pressure sensor 17 is monitoring blade pawl 7 and 6 surface of workpiece Contact, to the depth of score of adjustable blade pawl 7.The leading screw 11 end installation position sensor 9 and Encoder 10, wherein encoder 10 are used for recording the rotating speed of leading screw 11, and displacement sensor 13 is used for recording the position of sliding block, the two Cooperation realizes positioning marking, solves asking there are error when scribe fiducials determine in the prior art to determine scribe fiducials Topic.

As shown in Figure 1 and Figure 5, optionally, clamping device 4 includes the first holding frame 13 and the second holding frame 12, wherein the One holding frame 13 is fixed on one end of the sliding rail 3, and positioning plate 5 is provided on the first holding frame 13；Second holding frame 12 can be along the axial movement of sliding rail 3.By taking Fig. 1 as an example, the first holding frame 13 is in the front end of sliding rail 3, close to servo motor 2, first Holding frame 13 is fixed.Second holding frame 12 is position-adjustable, position by adjusting, can make the first holding frame 13, Different spacing is generated between second holding frame 12, to adapt to the size of different workpieces 6.It adjusts second holding frame, 12 position And then the second holding frame 12 is fixed on sliding rail 3 by bolt.

Specifically, first holding frame 13 includes symmetrically arranged fixture block 21, from the top surface of fixture block 21 to fixture block 21 Side surface direction be machined with the clamping face 26 of arc, the clamping face 26 on two fixture blocks 21 is provided commonly for placing and fixed workpiece 6； 6 generally pylindrical structure of workpiece, therefore clamping face 26 is designed using arcuate structure, can better adapt to 6 shape of workpiece, It is effectively fixed to workpiece 6 to play the role of；The bottom of fixture block 21 is provided with the identical card slot in multiple intervals 27；Described determines Position plate 5 is located at the side of clamping face 26, and the axial direction of the 3 upper edge sliding rail 3 of sliding rail is equipped with the multiple and card slot at equal intervals The fixture block 28 of 27 cooperations.Spacing between the spacing of fixture block 28 and card slot 27 is identical, by the way that the card slot 27 on fixture block 21 to be inserted in On different fixture blocks 28, can make to generate different spacing between fixture block 21 so that the clamping device 4 can place it is not coaxial The cylindrical workpiece 6 of diameter, the workpiece 6 of cuboid workpiece 6 and other shapes realize the diversity of scribing line function.First holding frame It after 13 21 spacing of fixture block is adjusted, is fixed by bolt, and makes the position of the first holding frame 13 on all sliding rails 3 It is on the same line；The structure of second holding frame 12 and the first holding frame 13 are essentially identical, and difference is the second holding frame 12 Upper no positioning plate 5, remaining structure are identical.After 21 spacing of fixture block of second holding frame 12 is adjusted, it can be pushed on sliding rail 3 Second holding frame 12 is consolidated by bolt with adjusting the spacing of the first holding frame 13, the second holding frame 12 after position suitable again It is fixed.

The effect of the positioning plate 5 is to play the role of positioning when placing workpiece 6；It is sharp first when placing workpiece 6 One end of workpiece 6 is placed on the first holding frame 13 with hoisting mechanism, and 6 end of workpiece is withstood on positioning plate 5, then again Put down the other end of workpiece 6；Since all first holding frames 13 are on same straight line, thus when 6 end of workpiece withstands on positioning After being put down on plate 5, the end position of all workpiece 6 can be made identical, allow for the position of workpiece 6 on all sliding rails 3 so all It is identical so that scribing line is more accurate.

Preferably, for the ease of before sliding rail 3,12 position of the second holding frame are fixed, being adjusted for its position, this In scheme, the end of workbench 1 is equipped with the second hydraulic cylinder 23, and being equipped on the output shaft of the second hydraulic cylinder 23 can be upper and lower Mobile passage plate 24；Card pipe 29, the side edge of card pipe 29 are vertically installed on the output shaft of second hydraulic cylinder 23 Axially offer bar-shaped trough, there is slide-bar 33 inside card pipe 29, slide-bar 33 by connecting plate 32 across the bar-shaped trough with it is described Passage plate 24 connect；The bottom of the card pipe 29 is provided with electric telescopic rod 30, and axial direction and the card of electric telescopic rod 30 are managed 29 is axial parallel；The output shaft of the electric telescopic rod 30 is connect by connecting rod 31 with the passage plate 24.Such as Fig. 2, Fig. 6 Shown, the horizontal position of the second holding frame 12 is higher, and the horizontal position of sliding rail 3 is relatively low, and the passage plate 24 realizes root According to the adjustment needed to sliding rail 3,12 position of the second holding frame.Specifically, when needing to adjust all sliding rails 3 in the position of workbench 1 When setting, by extending electric telescopic rod 30 so that the position of passage plate 24 reduces, and is then pushed again by the second hydraulic cylinder 23 Plate 24 is elapsed, passage plate 24 is gradually contacted with 3 end of sliding rail, is fixed after pushing sliding rail 3 to reach suitable position.And it needs to adjust When saving the second 12 position of holding frame, then electric telescopic rod 30 is shunk, the position of passage plate 24 is made to increase, is then pushing the second folder Hold the spacing of frame 12 adjusting and the first holding frame 13.This 24 structure of passage plate so that the adjusting of 3 position of sliding rail, the second holding frame 12 positions adjust and are independent of each other, while also ensuring the consistency of different sliding rails 3, the second holding frame 12 when adjusting position.

More specifically, the first displacement sensor 19, the second hydraulic cylinder 23 are provided on first hydraulic cylinder 18 On be provided with second displacement sensor 25；Displacement sensor 13 is used to monitor the stroke of hydraulic cylinder output shaft, in order to it Carry out Electronic control；First hydraulic cylinder 18, the second hydraulic cylinder 23 pass through the first solenoid directional control valve 20 respectively, the second electromagnetism changes It is connected to hydraulic pump to valve 22, in this way by the cooperation of a hydraulic pump and solenoid directional control valve, two hydraulic cylinders can be controlled.

This programme can be crossed by automatically controlling, the servo motor 2, the first hydraulic cylinder 18, second Hydraulic cylinder 23 is controlled by a PLC controller, and above-mentioned each sensor, encoder 10, solenoid directional control valve, liquid The electronic components such as press pump are connect with PLC controller, are received control or are provided information.

The control system of this programme is as shown in figure 8, the control system includes 360V electrical source of power, soft strater, watches Take motor 2, low-voltage electrical apparatus, PIZZ safety relays and PLC controller and touch display panel.The soft strater plays voltage stabilizing Current stabilization acts on and ensures the even running of the servo motor 2, and " emergency stop " control may be implemented in the PIZZ safety relays Function, the touch display panel are in communication with each other with the PLC controller and connect, the control signal output of the PLC It is connected with the control signal input of the servo motor 2, the control signal output of the PLC and the first electromagnetic switch Valve 20, the second solenoid directional control valve 22 input terminal be connected, on the touch display panel input scribing line associated technical parameters Make the operating of servo motor 2 by the control output ends PLC to drive the movement of leading screw 11 to complete scribing operation.

The low-voltage electrical apparatus be used for controlling with the PLC controller switch of the servo motor 2, rotate forward with it is anti- Turn and the flexible realization of the piston rod of the first hydraulic cylinder 18 vertically moves back and forth and the piston rod of the second hydraulic cylinder 23 It stretches to realize horizontal reciprocating movement.The input switch amount (0/1) of the PLC includes controlling opening for the servo motor 2 It closes SB1, the stretching switch SB4 for rotating forward switch SB2, reversal switch SB3 and 18 piston rod of the first hydraulic cylinder, shrink switch SB5, the stretching switch SB6 of 23 piston rod of the second hydraulic cylinder, contraction switch SB7, close switch SQ1 and close switch SQ2, institute State the switch SQ2 and the code switch SQ3 of pressure sensor 17.

The output signal of PLC include servo motor 2 switching signal A1, positive and negative rotaring signal A3 and A4 and it is asymptotic, contact, Displacement shows signal.PLC is in communication with each other with touch display panel and connect, for realizing human-computer interaction function.Touch display panel can be into The input of row switching value and the setting of parameter, touch display panel can read and show the output quantity of the PLC output modules, Such as：The status display of motor 2, the action state of hydraulic cylinder, the moving displacement of lineation device.

When needing to carry out positioning marking to workpiece 6, workpiece to be machined 6 is placed in each fixation first In detachable aid mechanism on workbench 1, starts control system, start the second hydraulic cylinder in touch display panel 23 stretching switch SB6, so that workpiece 6 is contacted with positioning plate 5 under the thrust of second hydraulic cylinder 23 so that work The end of part 6 is aligned with one end of aid mechanism；Then start the contraction switch SB7 of the second hydraulic cylinder 23, the second hydraulic oil 23 piston rod of cylinder restores to original position.

Secondly, it is required according to the drawing size of workpiece to be machined 6, the parameter setting area input scribing line on touch display panel Parameter, and starting the rotating forward button of servo motor 2 can be with 2 output shaft of control servomotor by the control of PLC and low-voltage electrical apparatus Turnning circle, the servo motor 2 drives the leading screw 11 to rotate together by yielding coupling 14.The circle of the leading screw 11 Zhou Yundong can be converted into the linear motion of sliding block, to be mounted on the second hydraulic cylinder 23 on sliding block, make corresponding straight line fortune It is dynamic, when reaching predeterminated position, stop motion.Then, start the contraction of the first hydraulic cylinder 18, piston rod on touch display panel Switch SB5, first hydraulic cylinder, 18 piston rod contractile motion band 8 vertical downward movement of movable knife rack, when on blade pawl 7 When the pressure sensor 17 touches workpiece 6, i.e., when the pressure sensor 17 receives force signal, pass through the processing of PLC The piston rod of the on-off model and first hydraulic cylinder 18 that release the pressure sensor 17 with control is shunk and knife Then the downlink function of frame 8 utilizes servo motor 2 that blade pawl 7 is driven to realize scribing operation on workpiece 6.

Finally, start the stretching switch SB4 of 18 piston rod of the first hydraulic cylinder, knife rest 8 returns to initial position, stretches out process In passed through first displacement sensor 19 such as the piston rod of the first hydraulic cylinder 18, then PLC reads the first displacement sensing The variation switching value of device 19 simultaneously cancels oil cylinder stretching function, and a scribing operation is completed at this time.So repeat above operation, it can be real The 6 batch batch parallel type automatic positioning scribing line of existing workpiece.

Claims (8)

1. a kind of extension bar parallel type autoset road marking, including workbench (1), which is characterized in that on the workbench (1) Multiple sliding rails (3) that can be moved and be mutually parallel on workbench (1) are arranged at intervals with, sliding rail is equipped on (3) for fixing The clamping device (4) of workpiece (6)；Be provided with liner agency at the center of the workbench (1), liner agency include perpendicular to The sliding rail (3) and the knife rest (8) above the sliding rail (3) are equipped on knife rest (8) identical with the sliding rail (3) quantity Blade pawl (7), the blade pawl (7) can be along the axial movement perpendicular or parallel to the sliding rail (3).

2. extension bar parallel type autoset road marking as described in claim 1, which is characterized in that on the workbench (1) It is provided with a pair of of erecting bed, mounting hole is offered on erecting bed, the mounting hole is provided with leading screw (11), leading screw (11) One end connect with the servo motor (2) on the workbench (1) by yielding coupling (14), contact bearing (16)；Institute It is equipped with sliding block on leading screw (11) between a pair of of the erecting bed stated, the first hydraulic cylinder (18) is installed on sliding block, it is described Knife rest (8) is mounted on the output shaft of the first hydraulic cylinder (18), and knife rest (8) is perpendicular to the sliding rail (3).

3. extension bar parallel type autoset road marking as described in claim 1, which is characterized in that the blade pawl (7) with Knife rest is provided with pressure sensor between (8).

4. extension bar parallel type autoset road marking as claimed in claim 2, which is characterized in that the end of the leading screw (11) End installation position sensor (9) and encoder (10).

5. extension bar parallel type autoset road marking as described in claim 1, which is characterized in that the blade pawl (7) by The blade of two arcs is connected and composed from middle part, and blade pawl (7) is right-angled intersection arcuate structure.

6. extension bar parallel type autoset road marking as described in claim 1, which is characterized in that the clamping device (4) Including the first holding frame (13) and the second holding frame (12), wherein the first holding frame (13) is fixed on one end of the sliding rail (3), Positioning plate (5) is provided on first holding frame (13)；Second holding frame (12) can be along the axial movement of sliding rail (3).

7. extension bar parallel type autoset road marking as claimed in claim 6, which is characterized in that first holding frame (13) include symmetrically arranged fixture block (21), the folder of arc is machined with from the top surface of fixture block (21) to the side surface direction of fixture block (21) Face (26) is held, the bottom of fixture block (21) is provided with the identical card slot (27) in multiple intervals；The positioning plate (5) is located at clamping face (26) axial direction of side, the sliding rail (3) upper edge sliding rail (3) is equipped with the cooperation of the multiple and card slot (27) at equal intervals Fixture block (28).

8. extension bar parallel type autoset road marking as described in claim 1, which is characterized in that the workbench (1) End is equipped with the second hydraulic cylinder (23), and passage plate moving up and down is equipped on the output shaft of the second hydraulic cylinder (23) (24)；Card pipe (29) is vertically installed on the output shaft of second hydraulic cylinder (23), the side of card pipe (29) is in an axial direction Offer bar-shaped trough, there is slide-bar (33) inside card pipe (29), slide-bar (33) by connecting plate (32) across the bar-shaped trough with Passage plate (24) connection；The bottom of the card pipe (29) is provided with electric telescopic rod (30), electric telescopic rod (30) Axial direction and card pipe (29) it is axial parallel；The output shaft of the electric telescopic rod (30) passes through connecting rod (31) and the passage Plate (24) connects.