A kind of pipe material cutter
Technical field
The utility model relates to a kind of metal tube material cutting processing equipment, relates in particular to a kind of pipe material cutter.
Background technology
The domestic and international at present equipment to the tubing cutting mainly contains machined into and sawing machine is processed two kinds, and there are 2 millimeter in the cutting slit of machined into, but its speed is fast; The cutting slit of sawing machine processing is smaller, and in 1.5 millimeter, but its speed is slow.
As a patent No. is Chinese utility model patent " a kind of plastic material of ZL200710027668.5 (notification number is CN101036990Y), pipe cutting machine " disclosed a kind of like this plastic material, pipe cutting machine, comprise frame, frame is provided with hold down gag and cutter sweep, hold down gag comprises support, support is provided with clamping cylinder, the tubing compact heap is installed on the clamping cylinder, described cutter sweep comprises support body, support body is provided with cylinder, cylinder is provided with the V-type cutter, described frame is installed on the guide rail of base, reset cylinder is installed on the base, and the flexible push rod top of reset cylinder is connected with the drawhead that the pulling frame resets.
As a patent No. is a kind of chipless extrude tubes cutting machine so the Chinese utility model patent " chipless extrude tubes cutting machine " of ZL200520034377.5 (notification number is CN2794706Y) has disclosed, comprise workbench and cutter sweep, cutter sweep comprises the bearing block that is arranged on the workbench, be arranged at a pair of gripper cylinder of bearing block both sides, be with the rotating cylinder of band tubing passage in the bearing block, rotating cylinder one end and motor are by the belt interlock, the other end is fixedly connected with rotary head, rotary head is provided with the movable knife rest that is connected with radially pusher feed cylinder, but movable knife rest is provided with the anodontia disc cutter of rotation.
As a patent No. is a kind of high speed one way pipe cutting machine so the Chinese utility model patent " a kind of high speed one way pipe cutting machine " of ZL200520033856.5 (notification number is CN2806012Y) has disclosed, comprise workbench, be arranged at the support of workbench below, cutter sweep, it is characterized in that: described cutter sweep comprises saw blade, the saw blade drive unit, transmission device and order about the thrust unit that saw blade is done reciprocally swinging action, described saw blade, drive unit, transmission device is connected to a pendular body and is installed in one and is located in the rotating shaft consistent with the tubing traffic direction on the support, this rotating shaft is the swinging axle of pendular body, described saw blade exceeds workbench, workbench is provided with the notch that holds the saw blade swing, and described thrust unit is the cutting cylinder that is connected with pendular body.
No matter the pipe cutting machine processing that machined into, still above each patent of sawing machine processing are mentioned, it once cuts and can only cut one section tubing, and cutting efficiency is low.
In sum, existing various tubing cutter sweep also can improve further.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of pipe material to cut the high pipe material cutter of efficient at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of pipe material cutter, include lathe bed, the work top of lathe bed is provided with pipe and anticipates a device and cutter sweep, it is characterized in that described cutter sweep comprises pedestal, constrain on the work top of lathe bed and only relatively lathe bed vertically move; The pedestal drives structure is arranged on the lathe bed to drive the relative lathe bed of pedestal and vertically moves; Tool driving shaft, being installed in also can be around self axis rotation on the pedestal; Spindle motor is as the described tool driving shaft rotation of drive power source; The multi-disc blade evenly is installed on the tool driving shaft at interval and also can rotates with tool driving shaft.
The structure that above-mentioned blade is installed on the tool driving shaft comprises several spacer rings, several locating rings and a locking nut, described spacer ring, locating ring and blade all are sleeved on the tool driving shaft, just be provided with a blade between adjacent two spacer rings, described spacer ring and blade form the blade row group, between spacing two the adjacent locating rings therein of this blade row group, the locating ring of wherein inner end is resisted against on the convex shoulder of driving shaft, and the locating ring of outermost end is by being threaded in the locking nut locking on the tool driving shaft.
This blade mounting means gets final product with locking nut locking after only needing in certain sequence shape upper isolating ring, blade and locating ring when mounted at last, so have blade simple advantage is installed; Also have because the number of locating ring and to be positioned at the blade front-back direction adjustable arbitrarily, so the relative position relation of blade row group on tool driving shaft can conveniently be regulated, have the spacing adjusting between adjacent two blades also very convenient again, the thickness that only needs to change spacer ring gets final product.
For tool driving shaft is operated steadily, the front end of said base has the backboard consistent with the cutter drives direction of principal axis, the outer end of backboard is fixed with the gripper shoe vertical with backboard, the front end activity of described tool driving shaft is connected with described locking nut after passing perforation on the gripper shoe, between tool driving shaft and perforation, be provided with copper sheathing, this sleeve is the tool driving shaft axial slip relatively, the outer end of sleeve and locking nut are conflicted, and conflict with the locating ring that is positioned at the tool driving shaft outermost end in the inner of sleeve.The two ends of tool driving shaft are all located well like this, guarantee that tool driving shaft operates steadily under the high speed rotation status.
Above-mentioned pipe is anticipated a device and is included calibration commentaries on classics material part and material folding part; Described calibration changes the material part and comprises and the fixing shell of lathe bed, be equipped with in the shell for the pipe material and pass and will manage the collet assembly that material clamps, the collet assembly can be around self axis opposite shell rotation, and described collet assembly is by the first stepper motor driven band drive mechanism driven rotary; Described material clamping part branch comprises the workbench that is fixed on the lathe bed, the folder mouth is installed down on the workbench, on the following folder mouth two axles is installed, be respectively lower shaft and rear axle, lower shaft and rear axle all by bearing be bearing in down the folder mouthful on, wherein rear axle be positioned at lower shaft on the upper side by the back position; The top of following folder mouthful also is provided with the lifting platform that moves up and down by being fixed on the air cylinder driven on the workbench, and folder mouthful is installed on this lifting platform, on the last folder mouthful axle is installed, and last is bearing in by bearing and presss from both sides mouth upward and be positioned at the top of lower shaft; The compartment of terrain cuts out a plurality of ringwise gaps for the blade incision on the side face of described lower shaft, rear axle and last axle; Under the state after lifting platform moves down, described lower shaft, rear axle and last axle surround one will manage radial and axial spacing its interior clamp port of material.
This pipe is anticipated a device and can further be increased work efficiency, this positioner can make the rotation at a high speed on certain axial location of pipe material, be that guillotine is in the process of cutting, by blade and the rotation of pipe material synchronous backward, can effectively accelerate to manage the speed that material cuts, cropped during at pipe material to about 2/3rds positions, the pipe material no longer is fit to high speed rotating, if can causing the pipe material to be beaten, high speed rotating flies, and the damage blade, at this moment move after making tool rotating shaft vertically earlier, drive the blade withdrawing, the programming Control pipe material calibration by first stepper motor rotates again, relocate, then feed is again finished whole pipe material and so forth for two or three times and is cut, and these all can carry out automatically by program setting.
Certainly it is directly to adopt one to clamp cylinder that the simplest pipe is anticipated a device, will manage material and be completely fixed, and need promote when cutting that rotating shaft vertically moves is the stroke of the outer electrical path length of pipe material at least, just can finish once to manage and expect to cut, so it is low to cut efficient.
Above-mentioned workbench comprises base plate, top board, the described mouth of folder down is fixed on the top board, be fixed with in the base plate both sides and extend upward and two horizontal walls that each interval is parallel, the top of these two horizontal walls is provided with cross slide way, be fixed with two laterally steering pieces on the lower surface of described top board, have on each laterally steering piece with described cross slide way slide guide and cooperate the laterally steering groove, described base plate is provided with and can drives the top board drives structure of top board along the cross slide way slippage.
This Working table structure can drive the horizontal slippage of the relative lathe bed of top board, and the folder mouth is fixed on the top board down, so this feeding clip mechanism position can be regulated, to aim at blade position in this gap of adjusting clamping device, conveniently uses.
Because making in adjusting, the position of aforementioned feeding clip mechanism only need mobile a bit of distance to get final product, above-mentioned top board drives structure comprises the fixed block that is fixed on the top board lower surface, have tapped through hole on the fixed block, be equipped with a cross lead screw that cooperates with this tapped through hole in this tapped through hole, the two ends of this cross lead screw are bearing in by bearing on the bearing block that is positioned on the base plate, and a wherein end of described cross lead screw links to each other with a regulating wheel that drives the cross lead screw rotation after passing its bottom bracket.This backplane drive structure can finely tune top board displacement, be fit to use.
For guaranteeing that lifting platform is relative to pressing from both sides the stability that mouth moves down, be fixed with two leads that extend on the above-mentioned lifting platform downwards, be fixed with the cylinder mount pad on the described top board, described cylinder is fixed on this cylinder mount pad, simultaneously, have the pilot hole that leads for described lead inserting on the cylinder mount pad.
The structure that above-mentioned pedestal constrains on the lathe bed is, be fixed with on the described lathe bed and extend upward and two vertical walls that each interval is parallel, this two vertical wall be provided with longitudinal rail, be fixed with two longitudinally guiding pieces on the lower surface of described pedestal, have on each longitudinally guiding piece with described longitudinal rail slide guide and cooperate the longitudinally guiding groove.This limit method is simple, and can guarantee the stability of pedestal slippage.
Above-mentioned pedestal drives structure comprises the pushing block that is fixed on the pedestal lower surface, have tapped through hole on the pushing block, be equipped with a vertical screw mandrel that cooperates with this tapped through hole in this tapped through hole, the two ends of this vertical screw mandrel are bearing on the bearing block that is positioned on the lathe bed by bearing, a wherein end of described vertical screw mandrel links to each other with second stepper motor that drives vertical screw mandrel rotation after passing one of them bearing block, and this second stepper motor and lathe bed are fixed.This pedestal drives structure can slowly promote pedestal and move by the principle of screw mandrel transmission, can better control the feed distance of tool driving shaft cutter, guarantees to cut the accurate of pipe material.
Be the automation that realizes that further the pipe material cuts, also be provided with pay-off on the above-mentioned lathe bed, this pay-off comprises slide block, clamp, material folding cylinder and promotes cylinder, described slide block constrains on the lathe bed and only can laterally move along lathe bed, clamp is positioned at slide block top and can slide block slippage up and down relatively under described material folding cylinder drives, the folder mouth that can form the pinch tube material after clamp moves down with slide block, described promotion cylinder is fixed on the lathe bed, and the piston rod that promotes cylinder links to each other with described slide block and laterally moves along lathe bed to promote slide block.When pipe material cut finish after, pipe is anticipated a device and is unclamped the clamping of pipe material spacing, promoting cylinder promotes clamping the feeding that laterally moves forward of the slide block of pipe material and clamp is arranged, pipe is anticipated device to continue that the pipe material is carried out clamping spacing after finishing, then controlling the material folding cylinder more upwards promotes clamp, the pipe material breaks away from the clamping of clamp and slide block, and control promotes to move to the home position after cylinder drives slide block and clamp, for feeding is next time prepared.
Compared with prior art, advantage of the present utility model is: this guillotine is equipped with the multi-disc blade at interval on tool driving shaft, tool driving shaft is installed on the pedestal, pedestal then can vertically move by relative lathe bed under the pedestal drives structure promotes, moving of pedestal ground moving belt moving knife tool driving shaft, and then the multi-disc blade that makes on the tool rotating shaft rotation synchronously cuts simultaneously by pipe and anticipates a pipe material of device location, that is to say that a cutting action can cut multistage tubing simultaneously, improves the efficient that cuts of pipe material cutter greatly.
Description of drawings
Fig. 1 is the perspective view of the utility model embodiment;
Fig. 2 is the Facad structure schematic diagram of the utility model embodiment;
Fig. 3 is the perspective view (removing spindle motor) of cutter sweep among the utility model embodiment;
Fig. 4 overlooks schematic diagram under the state for cutter sweep among the utility model embodiment;
Fig. 5 is the perspective view of material folding part among the utility model embodiment;
Fig. 6 is the side structure schematic diagram (removing cylinder) of material folding part among the utility model embodiment;
Fig. 7 is that the A-A of Fig. 6 is to echelon sectional view;
Fig. 8 is the structural representation of the utility model embodiment under cut state;
Fig. 9 is the structure cutaway view of the utility model embodiment under cut state;
Figure 10 is the perspective view that calibration changes the material part among the utility model embodiment;
Figure 11 is the structure cutaway view that calibration changes the material part among the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1~11, be a preferred embodiment of the present utility model.
A kind of pipe material cutter includes lathe bed 1, and the work top of lathe bed 1 is provided with pipe and anticipates a device and cutter sweep, and cutter sweep comprises
Pedestal 2, constrain on the work top of lathe bed 1 and only relatively lathe bed 1 vertically move, the structure that pedestal 2 constrains on the lathe bed 1 is, be fixed with on the lathe bed 1 and extend upward and two vertical walls 32 that each interval is parallel, this two vertical wall be provided with longitudinal rail 321, be fixed with two longitudinally guiding pieces 33 on the lower surface of described pedestal 2, have on each longitudinally guiding piece 33 with described longitudinal rail 321 slide guides and cooperate longitudinally guiding groove 331, also can be provided with small ball between longitudinal rail 321 and the longitudinally guiding groove 331, so that both relative slippages are lighter, this slide guide principle and oat tail groove structure are similar.
Shown in Fig. 2~4, the pedestal drives structure, be arranged on the lathe bed 1 and vertically move to drive pedestal 2 relative lathe beds 1, the pedestal drives structure comprises the pushing block 34 that is fixed on pedestal 2 lower surfaces, have tapped through hole on the pushing block 34, be equipped with a vertical screw mandrel 35 that cooperates with this tapped through hole in this tapped through hole, the two ends of this vertical screw mandrel 35 are bearing on the bearing block 36 that is positioned on the lathe bed by bearing, vertically second stepper motor 37 that a wherein end of screw mandrel 35 passes behind one of them bearing block 36 and the vertical screw mandrel 35 of a drive rotates links to each other, and this second stepper motor 37 is fixing with lathe bed 1.
Tool driving shaft 3, being installed in also can be around self axis rotation on the pedestal 2, and this tool driving shaft 3 is by spindle motor 4 driven rotary of being located on the pedestal, and this spindle motor 4 links to each other with tool driving shaft 3 by belt transmission structure.
Multi-disc blade 5, evenly being installed at interval also can be with tool driving shaft 3 rotation on the tool driving shaft 3, and the spacing between adjacent two blades 5 is the length of the pipe material 10 that cuts, and the number of blade 5 can be set as required.
As Fig. 3, shown in 4, the structure that blade 5 is installed on the tool driving shaft 3 comprises several spacer rings 6, several locating rings 7 and a locking nut 8, described spacer ring 6, locating ring 7 and blade 5 all are sleeved on the tool driving shaft 3, just be provided with a blade 5 between adjacent two spacer rings 6, for increasing the frictional force between blade 5 and the spacer ring 6, and between spacer ring 6 and blade 5, be provided with sealing ring, can guarantee that like this blade 5 and spacer ring 6 can rotate synchronously with tool driving shaft 3, spacer ring 6 forms the blade row group with blade 5, between spacing two the adjacent locating rings 7 therein of this blade row group, the front end of pedestal 2 has the backboard 21 consistent with tool driving shaft 3 directions, the outer end of backboard 21 is fixed with the gripper shoe vertical with backboard 22, the front end activity of tool driving shaft 3 is connected with locking nut 8 after passing perforation on the gripper shoe 22, between tool driving shaft 3 and perforation, be provided with copper sheathing 9, this sleeve 9 is tool driving shaft 3 axial slips relatively, the outer end of sleeve 9 and locking nut 8 are conflicted, conflict with the locating ring 7 that is positioned at tool driving shaft 3 outermost end in the inner of sleeve 9, pass through the locking effect of locking nut 8 like this, with blade 5, spacer ring 6 and locating ring 7 are locked on the tool driving shaft 3, the front end of tool driving shaft 3 is by gripper shoe 22 supportings simultaneously, and it is firm that tool driving shaft 3 is installed.
Pipe is anticipated a device and is included calibration commentaries on classics material part and material folding part.
As Figure 10, shown in 11, calibration changes the material part and comprises the shell of fixing with lathe bed 1 11, be equipped with in the shell 11 for the pipe material and pass and will manage the collet assembly 12 that material clamps, collet assembly 12 is installed in the sheath body 27, sheath body 27 is installed in the shell 11 by bearing, can only relatively rotate and to move to axial between sheath body 27 and the shell 11, be under the clamped condition at collet assembly 12, the front end of collet assembly 12 and sheath body 27 close-fittings, collet assembly 12 and sheath body 27 together can be around self axis opposite shell 11 rotations like this, band drive mechanism 24 driven rotary that collet assembly 12 is driven by first stepper motor 13, this band drive mechanism 24 comprises first belt wheel that links to each other with first stepper motor 13, be installed in second belt wheel on the sheath body 27, link to each other by belt between first belt wheel and second belt wheel; The outer end of collet assembly 12 is equipped with brake block 43 by bearing, be fixed with thrust cylinder 42 on the shell 11, the piston rod of thrust cylinder 42 links to each other with brake block 43, when wanting collet assembly 12 pinch tube material, thrust cylinder 42 promotes brake block 43 and moves after laterally, brake block 43 no longer limits collet assembly 12 and moves after laterally, collet assembly 12 under self elastic force effect relatively sheath body 27 move after laterally, resilient clip opening on the collet assembly 12 is subjected to the extruding of sheath body 27, clamps and will manage material 10; Owing to being driven by first stepper motor 13, rotates by collet assembly 12, so not only driving collet assembly 12, first stepper motor 13 carries out 360 degree rotations, and can also be by the programming Control collet assembly 12 calibration rotation to first stepper motor 13.
Shown in Fig. 5~9, the material clamping part branch comprises the workbench 14 that is fixed on the lathe bed, workbench 14 comprises base plate 141, top board 142, be fixed with in base plate 141 both sides and extend upward and two horizontal walls 143 that each interval is parallel, the top of these two horizontal walls 143 is provided with cross slide way 144, be fixed with two laterally steering pieces 26 on the lower surface of top board 142, have on each laterally steering piece 26 with described cross slide way 144 slide guides and cooperate laterally steering groove 261; Folder mouthfuls 15 is installed down on the top board 142, on the following folder mouthfuls 15 two axles is installed, be respectively lower shaft 17 and rear axle 18, lower shaft 17 and rear axle 18 all are bearing in down on the folder mouthfuls 15 by bearing and can rotate around self axis, and rear axle 18 is positioned at position after the leaning on the upper side of lower shaft 17; The top of following folder mouth 15 also is provided with the lifting platform 20 that moves up and down by being fixed on cylinder 19 drivings on the top board 142, be fixed with cylinder mount pad 145 on the top board 142, cylinder 19 is fixed on this cylinder mount pad 145, be fixed with two leads 201 that extend on the lifting platform 20 downwards, simultaneously, have pilot hole 146 on the cylinder mount pad 145 for described lead 151 insertings guiding, folder mouth 23 is installed on this lifting platform 20, on the last folder mouth 23 axle 16 is installed, last axle 16 is bearing on the folder mouth 23 by bearing, and last axle 16 is positioned at the top of lower shaft 17; The compartment of terrain cuts out a plurality of ringwise gap 25 for blade 5 incisions on the side face of lower shaft 17, rear axle 18 and last axle 16; Under the state after lifting platform 20 moves down, lower shaft 17, rear axle 18 and last axle 16 surround one will manage its interior clamp port B of material 10 clampings, pipe material 10 can be by radial and axial spacing in this clamp port B, because lower shaft 17, rear axle 18 and go up axle 16 and all be installed in down folder mouthfuls 15 or go up on the folder mouth 23 by bearing, so each energy is around self axis rotation, under pipe material 10 and the frictional force effect of each, the energy of rotation of pipe material drives lower shaft 17, rear axle 18 simultaneously and goes up axle 16 rotations, and promptly pipe material 10 can be around self axis rotation.
The base plate 141 of workbench 14 is provided with and can drives the top board drives structure of top board 142 along cross slide way 144 slippages.
The backplane drive structure comprises the fixed block 28 that is fixed on top board 142 lower surfaces, have tapped through hole 281 on the fixed block 28, be equipped with a cross lead screw 29 that cooperates with this tapped through hole in this tapped through hole 281, the two ends of this cross lead screw 29 are bearing in by bearing on the bearing block 30 that is positioned on the base plate, and a wherein end of cross lead screw 29 passes its bottom bracket 30 backs and links to each other with a regulating wheel 31 that drives cross lead screw 29 rotations.
Also be provided with pay-off on the lathe bed 1, this pay-off comprises slide block 38, clamp 39, material folding cylinder 40 and promotes cylinder 41, slide block 38 can laterally move along lathe bed 1 on lathe bed and only by the structural constraint of guide rail guide groove, clamp 39 is positioned at slide block 38 tops and can slide block slippage about in the of 38 relatively under described material folding cylinder 40 drives, the folder mouth that can form pinch tube material 10 after clamp 39 moves down with slide block 38, described promotion cylinder 41 is fixed on the lathe bed 1, and the piston rod that promotes cylinder 41 links to each other with slide block 38 and laterally moves along lathe bed 1 to promote slide block 38.
Laterally refer to and manage the consistent direction of material traffic direction in the present embodiment, vertically refer to and manage the vertical direction of material traffic direction, pipe expects that 10 can be various metal tube material, the preceding pipe material feed direction that refers to, and the back is with preceding reverse.
Operation principle and the process of the utility model embodiment are as follows:
Before the pipe material cuts, to manage material 10 passes to enter behind the collet assembly 12 by lower shaft 17, rear axle 18 and go up axle 16 and surrounds clamp port B position, 42 work of thrust cylinder, promoting brake block 43 moves after laterally, brake block 43 no longer limits collet assembly 12 and moves after laterally, collet assembly 12 under self elastic force effect relatively sheath body 27 move after laterally, the resilient clip opening on the collet assembly 12 is subjected to the extruding of sheath body 27, and will manage material 10 clampings; Simultaneously, be fixed on down cylinder 19 on the folder mouthfuls 15 drive lifting platforms 20 relatively down folder mouthfuls 15 move down, pipe material 10 can by radially spacing by lower shaft 17, rear axle 18 and in the axle 16 clamp port B.
If the position of material folding part does not have and the set of blades correspondence, then need the position of material folding part is finely tuned, rotate regulating wheel 31, drive cross lead screw 29 rotations, because cross lead screw 29 relative base plates 141 are fixed, by the screw mandrel Principles of Regulation, the fixed block 28 on top board 142 lower surfaces can be along cross lead screw 29 axial slips, to regulate the relative position relation of material folding part and blade row group, guarantee that blade 5 aims at lower shafts 17, rear axle 18 and go up gap 25 on the axle 16.
As Fig. 8, shown in 9, when cutting the pipe material, spindle motor 4 drive tool driving shaft 3 and on blade 5 rotation at a high speed, first stepper motor 13 drives collet assembly 12 and pipe material 10 opposite shell 11 are carried out 360 degree rotations, simultaneously, 37 work of second stepper motor drive vertical screw mandrel 35 rotations, because vertically screw mandrel 35 relative lathe beds 1 are fixed, by the screw mandrel Principles of Regulation, pushing block 34 on pedestal 2 lower surfaces is screw mandrel 35 axial slips longitudinally, final promotion pedestal 2 and tool rotating shaft 3 vertically move towards the direction near pipe material 10 relative to lathe bed 1, realize feed, blade 5 stretches into the gap 25 of axle 16 and lower shaft 17 gradually with cutting pipe material 10, when pipe material 10 cropped during to about 2/3rds positions, pipe material 10 no longer is fit to 360 ° of high speed rotating, if can causing pipe material 10 to be beaten, high speed rotating flies, and damage blade 5, at this moment move after making tool rotating shaft 3 vertically earlier, drive blade 5 withdrawings, programming Control collet assembly 12 and pipe material 10 calibration by first stepper motor 13 rotate again, after pipe material 10 rotates a low-angle, first stepper motor 13 stops, no longer rotation of pipe material 10, then blade 5 feed again, finish whole pipe material 10 and so forth for two or three times and cut, these all can carry out automatically by program setting.
When pipe material 10 cut finish after, pipe is anticipated a device and is unclamped the clamping of pipe material 10 spacing, promote cylinder 41 and promote slide block 38 and the laterally reach feeding of clamp 39 that clamping has the pipe material, pipe is anticipated device to continue that pipe material 10 is carried out clamping spacing after finishing, then controlling material folding cylinder 40 more upwards promotes clamp 39, pipe material 10 breaks away from the clamping of clamp 39 and slide block 38, and control promotes to move to the home position after cylinder 41 drives slide block 38 and clamp 39, for feeding is next time prepared.