CN106111855B - Feedway for molding machine - Google Patents

Abstract

A kind of feedway for molding machine, the feedway is used to for slender piece especially line or pipe being supplied to the molding machine of molding machine from workpiece storage device, the feedway has at least one supply roller pair, there are two supply roller (400) for its tool, the supply roller is arranged to the rotation axis being parallel to each other and can be driven with mutually opposing rotation mode, and is limited by the circumferential surface of belt profile (410) for guiding the supply roll gap by workpiece.Each of supply roller by roller tension system by be revolvably installed with it is interchangeable in a manner of be fastened to it is associated supply axis (300) an end.Roller tension system has stretching screw (500), and the rotation axis relative to supply roller is located at center and with threaded portion (520) and relative to the broader head of threaded portion (510).Tectonic gap (530) in stretching screw, cephalad open wide and have non-circular entrainment profile for guiding tensioning tool.

Description

Feedway for molding machine

Technical field

The present invention relates to a kind of feedway for molding machine, which is used for slender piece especially line or pipe It is supplied to the molding machine of molding machine from workpiece storage device, and is related to a kind of molding machine of feedway with the type.

Background technique

Molding machine is machine tool, mainly can be with by molding with the help of suitable tools in automatic manufacturing process By elongated semi-finished product such as line, pipe, band or the like production in some cases with complex geometry quite less or Large quantities of profiled parts.For example, molding machine can be for producing two by the way that wire material, carrying material or tubular material to be bent The bending machine of dimension or three-dimensional bending component, or can be for by spring wrap or spring holder around manufacturing compressed spring, draw Stretch the spring production machine of the profiled part of spring, pole spring (yoke spring) or other types of springs.

In order to effectively manufacture the profiled part of large volume, the numerical control multi-shaft line of the computerization of currently used high productivity Molding machine.Such molding machine has multiple controllable machine axis, drive system and control device, drive system tool There are multiple electric drives to drive machine axis, which is used for according to the computer-readable control for being exclusively used in production process Processing procedure sequence is coordinated to activate the operational movement of machine axis in process of production.

In the manufacture of coil spring or other molding line components, line (spring wire) is in the feedway by molding machine Correspondingly extract or transport the molding dress to molding machine while controlling process control by NC out from workpiece storage device (such as reel) It sets.Supply line is shaped to coil spring or other profiled parts, institute by molding machine with the help of the tool of molding machine Molding machine is stated on transport of materials direction in downstream.After forming operation is completed, final molding component is controlled by NC It is cut off by cutter device from supply line while process control.For each profiled part to be fabricated, the program It recycles periodically.

The feedway of type discussed herein has at least one supply roller pair, supply roller that there are two tools, and this two Supply roller is arranged to the rotation axis that is parallel to each other and can be driven with mutually opposing rotation mode.Supply roller passes through The circumferential surface of its belt profile limits supply roll gap to guide through workpiece (such as line or pipe).Indexing to processed material Speed and index direction can be by the rotation speeds for controlling supply roller and direction of rotation come pre-qualified.

Supply roller be intended to as far as possible without slippingly provide material by supply roll gap transport, and therefore should be bonded on to To apply big tightening force still in a manner of mild and friction lock on the material transported.Each of supply roller passes through Roller tension system is fastened to the free end of associated supply axis.Supply axis is couple to driver and driving force is transmitted to confession To roller.Connection that should rotatably between fixed supply axis and supply roller, so as to which the rotation of zero-lash supply axis is turned It is changed to carriage movement.Since supply roller is the machine element of the geometry depending on handled workpiece, so supply roller should be able to It is enough to be replaced in relatively simple manner by machine operator.

Feedway is generally arranged to the region of the shaping jig of relatively close molding machine.The modern molding machine the case where Under installation space is usually required at nearly molding machine to be attached Accessory Members, such as observing journey during molding The camera of sequence.Therefore, if it would be possible, feedway should need less in the region for being very suitable for being attached Accessory Members Installation space.

Summary of the invention

The present invention is based on the purposes for the feedway for providing the type referred to when starting, and reliable function to assign together The quick replacement of supply roller, and furthermore need the small installation space outside supply roller.

Purpose feedway through the invention and molding machine are achieved.

According to the invention advocated, roller tension system has stretching screw, rotation of the stretching screw relative to supply roller Axis is located at center and has threaded portion and head, and the head is wider relative to threaded portion.Stretching screw has gap, Its cephalad opens wide and has the non-circular entrainment profile for guiding tensioning tool.

Threaded portion is intended to be mounted in the end side internal whorl of supply axis, so as to which stretching screw is screwed into supply In axis.Head relative to threaded portion axial dipole field for carrying supply roller on the supply spool.

The stretching screw for being also known as central tension screw in this application can be between supply axis and supply roller The unique strain component that must be activated by operator of connection.Other tensions of individually actuating are not needed and are preferably not provided with yet Element.As a result, in order to replace supply roller, may be sufficient below: operator's only release tension screw uses supply roller another One supply roller is replaced, and correspondingly fastens or tense again the stretching screw.Replacement supply roller is greatly simple as a result, Change and only needs a small amount of time.In order to tense and release tension screw, it is only necessary to a tensioning tool, have mounted to Part in the head open gap in side and the non-circular entrainment profile with the non-circular entrainment outline with gap.

Due to being tightly connected by the open gap of cephalad come the rotation lock implemented between stretching screw and tensioning tool, institute It can be optimized in its vpg connection according to the other function on the head with head.In particular, head can be relative flat , because can be optimized between tensioning tool and stretching screw by the shape and depth in the gap with non-circular entrainment profile The reliability that is tightly connected of rotation lock.In particular, making for example, the head of stretching screw can be limited by cylinder-shaped circumferential surface Obtaining the head can be designed other than gap area in a manner of rotational symmetry.It thus can during the tension of stretching screw Realize especially being uniformly distributed for tightening force.

In a preferred embodiment, clearance configurations are internal hexagon gap.As a result, when stretching screw is tightened up, Very high torsion can be correspondingly realized with the help of commercially available tensioning tool with external hexagonal cross section Square tenses torque.However, other non-circular entrainment profiles are also possible.Open gap can have internal pentagon wheel Exterior feature, inner square profile, internal multiple tooth profile or the slot type profile for example optionally with intersecting trough.

The open gap of cephalad, which can be, deep is projected into gap in the region of threaded portion.Thus be conducive to very To the reliable delivery of high torque.

According to a kind of improvement, the gap for being configured to perforation gap is provided, axially through stretching screw.As a result, in a side Face is, it can be achieved that deep gap to obtain enough power transfer surfaces on entrainment profile enough.Moreover, between by continuously penetrating through Gap is provided to the central area of the free end of supply axis and is immediately adjacent to.In the case where many feedways, for that will lubricate The lubrication connection that agent is supplied to the oil site of supply axis is located at herein.It therefore, can be via lubrication when tensing the stretching screw Connector come implement introduce lubricant.

According to a kind of improvement, stretching screw is configured to flat head dummy stretching screw, wherein head height (with tense spiral shell When the axis of nail is measured in parallel) it is less than the diameter of threaded portion.The flat head of the type is in side of the supply roll surface from supply axis Relatively small installation space is only needed on face, so that camera or other appurtenances may be positioned such that relatively close supply when needed Roller and install there.It especially provides by monitoring even very short spring based on the measuring system of camera as a result, Manufacture and the possibility that the manufacture is optionally controlled based on the measurement result of camera system.In some embodiments, head Height be less than threaded portion diameter 50%, thus the overall shape of flat head dummy stretching screw with mention for other purposes The shape of many stretching screws supplied is dramatically different.

The construction of flat head dummy stretching screw is assigned in particular, in that stretching screw has the open gap of cephalad, between described Gap is sufficiently used for using tensioning tool.

In some embodiments, (maximum) diameter on head is at least twice of the size of the diameter of threaded portion.Head It can be therefore correspondingly relatively wide or plane degree compared with its height.Under the state that is supported, the wide head of the type It can directly carry and supplied (that is especially in the case where separator of not intermediate arrangement or the like) when needed On the outside of roller and to which tightening force is transmitted to supply roller.

Head be carried on the inside can on large regions equally towards can be plane on the inside of threaded portion It is also on the outside of the supply roller of plane.However, it is confirmed that when radially-inwardly flat gap is arranged on the inside on head It can be advantageous, so that on the outer periphery that circular annular bearing outstanding is formed in head on the direction of threaded portion.By This may be implemented during tensing the stretching screw through the contact surface in the region of radially outward annular bearing come proprietary Ground transmits tightening force, thus correspondingly supports the especially reliable delivery of torque and especially reliable entrainment.

Annular bearing can be closed in circumferential direction, and but this is not essential.The annular bearing can be by one or more , there is interval in circumferential direction between annular segment in a annular segment composition.Generally, multiple carryings in relatively small region Face or bearing area can be correspondingly configured to distribution in the circumferential, such as definitely three loading ends.If desired, can be to shadow Ring the distribution of power.

Several embodiments are characterized in that separator, pass through at least one inner part under the installation condition of supply roller The head for being respectively disposed in stretching screw and supply roller are between the side or outside on head.It can be in the help of separator It is lower that the tightening force generated by stretching screw is distributed on large regions, thus, it can be achieved that changing between stretching screw and supply roller Kind friction lock.

In the mode for being similar to traditional separator, separator can be closed in circumferential direction, that is to say, that can only have One internal port passes through threaded portion to guide.A kind of modification of separator be it is especially advantageous, wherein the separator has Have for guiding the port by threaded portion, is opened wherein the port is transitioned into radially continuous transverse direction on a side Mouthful, the span width (measuring on the direction tangent with circumferential direction) of the transverse opening is greater than the overall diameter of threaded portion and small Maximum gauge in head.Separator that is embeddable or removing the type is without must be complete from supply roller by stretching screw It unscrews.Therefore stretching screw can be retained in stretching screw and partly be screwed into the state of supply roller.

Settable radially-inwardly gap makes around annular bearing shape outstanding on inside of the separator towards supply roller At on the inside on the outer periphery of separator.Annular bearing can be continuously in circumferential direction.Alternatively, it can also be formed The multiple annular segments separated in circumferential direction or bearing area are so as to supporting region limited on acquisition space at specified point Domain.It correspondingly there will be definitely three loading ends or bearing area in a variant, to have the effect of three-point mount.

By only providing (one or more) loading end on the periphery of separator, have between separator and supply roller The region of friction lock deviates in a manner of radially relative to common rotating shaft line, is can get as a result, in stretching screw/isolation The torque transmitting improved between disk and supply roller.

Separator can have round or circular-arc-shaped exterior contour.However, it's not necessary.It is also possible to the outer of other shapes Profile, such as polygonal shape such as triangle, square or hexagon optionally have cavetto corner.

When use (laterally-opening or closed) separator, head need not can transmit force directly to the outer of supply roller Side.Therefore, head may be selected to be relatively small in diametrically.In several embodiments, supply axis has collar and is adjacent to The end side associate member of collar closes supply roller so as to inserting, and supply roller has central through hole, the interior diameter of the central through hole Greater than the overall diameter of associate member.When installing supply roller, supply roller, which can insert, to be cooperated on associate member and pushes ahead until it It is carried in collar, then associate member is bonded in port.The overall diameter on the head of stretching screw is smaller than the interior diameter of through-hole, So that roller can be removed without completely discharging stretching screw.

It is especially advantageous that the size design on head, which combines laterally-opening separator, because in order to replace supply roller, Stretching screw only needs to be released without back-outing completely in this case.In the case where stretching screw is released, then every Separation disc can be removed laterally and supply roller can be pulled to the top of external screw head.Then implemented with reverse order The installation of another supply roller, i.e., before laterally introducing separator and then tensing stretching screw, primitively in head of screw The top in portion shifts supply roller on associate member onto.

Stretching screw helps to supply the press-fit connection between axis and supply roller, the concrete measure referred to it is some herein It can aid in improvement press-fit, so that the relative rotation between supply axis and supply roller is avoided or greatly prevents.

During some, supply roller, which is optionally exposed in a manner of frequently alternate, high accelerates (increase of rotation speed) Or it is exposed to deceleration (reduction of rotation speed), so that can not rule out the connection that can slowly discharge exclusively press-fit.As a result, There is provided additional measure in many examples so as to the pressure of foundation effect in circumferential direction between supply axis and supply roller Cooperation.

In some embodiments, supply axis has collar, which has end side loading end to carry supply roller, at least One entrainment bolt is attached to collar, this at least one entrainment bolt protrudes past loading end, relative to rotation axis off-center Position and be sized so as to be introduced into supply roller cam lock it is with holes in.Multiple entrainment bolts are set in some embodiments Three of them outstanding entrainment bolt, is distributed around central axis with uniform angular separation.In order to be conducive to the installation and dismounting of supply roller, Entrainment bolt is usually disposed relative to distributed entrainment hole with slightly small size, so that the overall diameter of entrainment bolt Carry the interior diameter in hole secretly slightly less than to retain small clearance in radial directions.

However, in order to which reliable form cooperation is obtained between supply axis and supply roller in these cases, in some realities Setting clearance compensation device in example is applied, can be activated by support stretching screw so that carrying bolt secretly when supporting stretching screw Existing any clearance is eliminated between entrainment hole.In this way, can get form cooperation in circumferential direction so that repeatedly Gradually release after accelerating and slowing down is avoided.

Clearance compensation device is activated by support stretching screw, that is to say, that does not need the actuating discrete from stretching screw Element.In several embodiments, this is achieved by the following way: clearance compensation device has clearance compensating element, is arranged in folder It is on strap bolt and radially expandable by effect axial force on it, the clearance compensation device it is sized so that Under the relaxation state of clearance compensation device (such as, that is to say, that when stretching screw is back-outed or part discharges), it is held in supply roller In the case where being loaded in collar, the actuation part of clearance compensation device protrudes past the side of the off-axis ring in face of supply roller.If Then stretching screw is tightened up, and thus reach tension, then the head of stretching screw is (or between head and supply roller The separator of intermediate arrangement) it is pressed on actuation part and axial force is applied on clearance compensating element, it is reacted as it, The clearance compensating element, radial expansion, to eliminate entrainment bolt and carry the clearance between hole secretly.

In one embodiment, the molded element of resiliency compressible is realized into simple structure using for clearance compensating element, Effective clearance compensation device, the molded element are compressed when tensing the stretching screw by externally actuated casing again.Mould Element processed can be the O-ring for example from resiliency compressible elastomer.

The invention further relates to the molding machine with molding machine and feedway, the molding machine has one or more Shaping jig, the feedway are used to for slender piece especially line or pipe being supplied to the area of molding machine from material stock device Domain.The feedway is the feedway of the type described in this application.In particular, molding machine can be spring production machine or Other line processors or pipe bending machine.

Detailed description of the invention

Other advantages of the invention and aspect describe below preferred illustrative embodiment of the invention, by attached Figure is discussed below, in the accompanying drawings:

Fig. 1 shows a small amount of element of CNC spring wrap machine according to an embodiment of the invention；

Fig. 2 shows the oblique perspective views of the molding machine for including coiling machine and the element of upstream feedway；

Fig. 3 shows the longitudinal direction by supply axis and supply roller mounted thereto according to an exemplary embodiment and cuts open Face；

Fig. 4 shows the enlarged drawing of the details of the clearance compensation device in the exemplary embodiment of Fig. 3；

Fig. 5 shows the axial view of the component of Fig. 3；

Fig. 6 shows the longitudinal direction by supply axis and supply roller mounted thereto according to another exemplary embodiment and cuts open Face；

Fig. 7 shows the axial plane view of the exemplary embodiment of Fig. 6；

Fig. 8 shows the oblique perspective view of the separator of the exemplary embodiment of Fig. 6；

Fig. 9 shows the oblique perspective view of the central tension screw of the exemplary embodiment of Fig. 6；

Figure 10 shows the modification with triangular shaped separator；

Figure 11 A shows the plan view of separator and Figure 11 B is shown by having on outer periphery there are three bearing area The section of separator.

Specific embodiment

Schematic general view in Fig. 1 show according to an exemplary embodiment in the form of CNC spring wrap machine 100 The element of molding machine.Spring wrap machine 100 has the confession in the region that the continuous lines of line 115 are partly supplied to molding machine 120 To device 110, line 115, which is issued and guided in a manner of numerical control scale-division profile from line storage apptss, passes through alignment unit.It is forming With the help of the numerical control tool of device, line is shaped to helical spring F.

Tool especially includes two winding pins 122,124, is arranged to the angle of 90 ° of offset and is in terms of its position It is adjustable, so that it is determined that the diameter of generated spring.Pitch tool 130 has tip, is arranged generally perpendicular to bullet It spring axis and is bonded in progress except the spire of spring.The pitch of spire can be come pre-qualified by this method.Number Control separating tool 150 is arranged in above spring, which is moved when forming operation is terminated by vertical operation from supply The manufactured helical spring of line storage apptss cutting.Separating tool also may be arranged at below spring, such as having another twine Spring around direction.

The machine axis of the CNC machine of part as tool is controlled by the numerical control device 180 of computerization, numerical control dress Setting 180 has storage device, and control software is located in storage device, and control software especially includes for machine axis operational movement NC control program.

In order to make helical spring, the line since shown position is sold with the help of feedway 110 in winding It is indexed on 122,124 direction, and is deflected into desired diameter by winding pin while being constructed circular arc and be flexed up to free line end Portion reaches pitch tool 130.Further line indexing when, helical spring in progress when the pitch of prelocalization is by pitch work The axial position of tool determines.The axially displaced pitch tool by NC control process control when modifying pitch during spring progress. The actuating movement of pitch tool substantially constructs the pitch profile along helical spring.

As shown in Figure 2, spring wrap machine equipped with the optical measuring system based on camera so as in real time and with Cordless obtains the data of the geometrical construction about the spring currently manufactured.Measuring system has CCD camera 250, It is mounted on the supporting element fixed to machine and can mention via interface to the image processing system for being connected to the interface For two dimensional image.For image procossing software provide in program module, the program module correspondingly with spring wrap machine The interaction of control device 180 or integration are wherein.

Camera is laterally tightened in the region in the direct front of feedway 110 by near line guide device, the phase Machine can be conditioned in terms of its position.It is attached to close to the camera 250 of machine so that the rectangular field of its image can be in progress A part of spring is directly obtained, when leaving shaping jig to determine generated spring geometrical construction.

Feedway 110 indexes line with indexing velocity profile that can be pre-qualified.Here, feedway is from line storage apptss Line, is directed to the shaping jig of molding machine by (such as from spool) gradually withdrawal string.There are two supply rollers for feedway tool To 112 and 114, in workpiece by being serial on direction.There are two supply roller, arrangements for each tool of the supply roller pair At with the horizontal axis of rotation being parallel to each other.By driver, supply roller can be driven with mutually opposing rotation mode, with Just conveying movement is obtained.Supply roller has the circumferential surface of belt profile, which has circular channel in circumferential direction, ring Shape and size around channel are adapted to the cross section of associated workpiece to be transported.The supply roller of one supply roller pair passes through week The supply roll gap that workpiece is conducted through is limited to face.

Each of supply roller is located at the free end for the supply axis being rotatably installed in machine frame, and rotation axis is Horizontal.Each of supply roller is fastened in a manner of being revolvably installed with replaceable supply roller by roller tension system associated Supply axis end.Roller tension system must complete multiple tasks.On the one hand, it is necessary to assure fastening is reliably revolvably installed So that the rotary motion for supplying axis is transmitted to supply roller with no slip mode and to the workpiece conveyed by supply roller.Another party Face, operator cosily and should be able to be rapidly carried out the replacement of roller as far as possible.Such as must recombinate for it is ready for use its When the forming machine of his type of workpiece (such as line with other diameters), need to replace roller.When supply roller is worn, Operation required for replacement should also need the time as few as possible.Finally, roller tension system should be constructed also so that in supply roller Need installation space as small as possible in front region, such as so as to camera 250 is moved into neighbouring feedway, so that The capture range of the camera 250 has just captured line when can leave line guiding piece online, causes manufacturing very short spring In the case where can also be observed by camera.

It will be discussed now by first example of Fig. 3 to the Fig. 5 to roller tension system.Longitudinal profile in Fig. 3 shows Axis 300 is supplied out, and rotation axis 310 can be surrounded by the driver distributed with various direction of rotation and with various rotations speed Degree is to drive.Collar 302(i.e. diameter broaden, this provides planes, bearing plane on the leading flank of ring for supply roller 400 303) construction in shaft body loading end so as to approach supply axis free end.

Three eccentric clamp strap bolts 320 are fastened in collar, and the entrainment bolt 320 is circumferentially mutual in each case 120 ° of offset simultaneously extends so that axial parallel and each for being introduced into the entrainment hole 402 of supply roller with rotation axis 310.Tool There is the associate member 304 of cylindrical outer profile to project upwardly beyond collar 302 in the side of the free end of supply axis.Associated supply Roller 400 is pushed and fitted on associate member in the axial direction, until on the loading end 303 that supply roller 400 is carried on collar 302.

End side central blind hole 306 with internal whorl 308 is located in the free end of supply axis.The flat base portion in the hole is fixed Position is at mutually neat with collar 302.Central lubrication connector 380 for supplying the lubricating system of axis is attached to the flat base portion in hole. The swivel bearing of supply axis can be supplied via lubrication connection using lubricant.

Supply axis supports associated supply roller 400 on its free end.Supply roller 400 is pushed and fitted associate member 304 Above and it is carried on the free leading flank of collar 302.The axial height of associate member 304 than supply roller thickness (when in axial direction When being measured on direction) small a few tenths of millimeter.Circumferential surface 410 of the supply roller with belt profile, two in this exemplified case It is integrated in circumferential surface 410 around C-shaped groove, the shape of C-shaped groove is adapted to the shape of the line wait be transported.Supply roller has Continuous three entrainments hole 402 in the axial direction, the interior diameter in entrainment hole 402 are adapted to associated entrainment bolt 320 Overall diameter is installed in associated entrainment hole so that carrying bolt secretly when placing supply roller with small lateral clearance.Each Supply roller has a central through hole 406, and the interior diameter of the central through hole 406 is adapted to the overall diameter of associate member 304, so that for It is largely located to roller on associate member without any clearance.

In shown mounting structure, supply roller 400 is tensed on supply axis 300 by central tension screw 500.It draws Tight screw is located at center relative to the rotation axis 310 of supply axis.Stretching screw is must being caused by operator for roller tension system Dynamic unique strain component is installed to supply axis so as to supply roller or removes from supply axis.Stretching screw 500 has threaded portion 520, external screw thread is installed in the internal screw thread of the end side central blind hole 306 of supply axis.Flat head 510 is configured to and threaded portion Divide integration, which is pressed into supply roller 400 by its planar inner 512 in face of threaded portion in the mounted state It is strained on planar outboard and thus by supply roller against collar 302.As that can be clearly apparent in Fig. 5, head has circle Shape cylindrical shape outer profile.

It is configured to the gap 530 of internal hexagon gap form positioned at the center of stretching screw, cephalad opens wide.It is interior Portion's hexagon serves as non-circular entrainment profile to be come with the tensioning tool that will pass through the respective pulley exterior feature with external hexagonal profile Activated tension screw.Gap 530 is configured to perforation gap, is continuously made when being embedded in stretching screw in the axial direction It can also be close to lubrication connection 380 by gap.

Since tensioning tool is used for tension and release tension screw using center clearance 530, so head 510 need not be especially It is configured to the tensioning tool wait be applied.Head can be configured to support to supply relative to supply axis in an alternate manner as a result, To the purpose of roller.Moreover, head can be relative flat make stretching screw that can be configured to flat head dummy stretching screw.By This, so that camera or other appurtenances is moved into very close supply roller becomes possible.In this exemplified case, the height on head Degree H(is when being parallel to the measurement of rotation axis 310) more small than the overall diameter of threaded portion times, it is less than in the case of the example The 20% of the overall diameter.On the other hand, the diameter on head is significantly greater than the diameter of threaded portion, for example, being the straight of threaded portion At least twice of diameter.Thus, it is ensured that wide carrier of head face is in supply roller.In this exemplified case, head 510 extends super Entrainment hole 402 is crossed, so that entrainment hole 402 is external covering (consulting Fig. 5) in the case where the stretching screw of installation.As a result, Visually attractive solution (consulting Fig. 5) has not only been determined, has also avoided entrainment hole by the entrance of pollutant.

In not separately shown modification, radially inward flat gap 513 is located in towards threaded portion On the inside 512 on head, which has been configured to define inner annular bearing 514, around head outer periphery simultaneously And it is slightly prominent (refering to dotted line) to threaded portion.The tightening force in supply roller is applied to by head 510 as a result, fully to apply In the radially outward region of annular bearing.It is realized between mutual compression member by the big effective diameter limited as a result, Friction momentum increase, so as to as far as possible with no slip mode transmit feed force.

Corresponding flat gap 313 can also be correspondingly disposed on the front side or outside towards supply roller of collar 302 (ginseng Read dotted line).Being formed in the annular support surface of supply roller on the outside of collar can be achieved.

In the case where stretching screw 500 of support, the supply axis with stretching screw and on the other hand peace on the one hand It correspondingly there will be reliable form cooperation or friction lock between supply roller on axis.Moreover, entrainment bolt 320 can help Cooperate entrainment in the form of supply roller.However, closing and removing to make supply roller be easier inserting, provide relative to entrainment hole tool There is the bolt of slightly small size, so that theoretically there are possible reversed clearance when changing direction of rotation.

In the exemplary embodiment shown, a clearance compensation device 360(consults Fig. 4), it is drawn in stretching screw It is automatically activated, is arranged between each entrainment bolt 320 and each entrainment hole 402 by the head 510 of stretching screw when tight Join domain in, to eliminate any remaining clearance that may be present between entrainment bolt and entrainment hole.

It is configured to column bolt, there is cylinder-shaped first part 312, the first part 312 close to the entrainment bolt 320 of collar Overall diameter it is only more smaller than carrying the interior diameter in hole secretly, and be adjacent to thereon, preceding part 314 has small diameter.With O-ring The molded element of 362 forms is pushed and fitted on preceding part, to be carried on inner cylindrical member 312.Actuation sleeve 364 It inserts and is cooperated to front side, which is mounted on preceding part 314 and by its end towards collar in a manner of being bound Side and be located at O-ring on.The length dimension of casing be designed such as its bushing head in a relaxed state (such as not yet pacify When filling stretching screw) slightly protrude past the planar outboard 414 of supply roller.If stretching screw is tightened up now, head is logical It crosses the inside towards supply roller and is pressed into actuation sleeve 364, thus O-ring is axially compressed, to pass through expansion element Radial direction broadens.Any clearance in a relaxed state between entrainment bolt and entrainment hole is expelled the connection as a result, so that should The connection of form cooperation is served as in connection in a manner of no clearance in circumferential direction this moment.

In other words, when tensing central tension screw 500, elastic element is compressed axially on entrainment bolt.Thus draw The radial direction of the elastic element risen broadens in filling entrainment bolt in supply roller and carries the gap between hole secretly, thus carrying secretly Form cooperation is generated between bolt and supply roller, thus avoids any reversed clearance in supply roller.

Generally, the company of the press-fit and form cooperation between supply roller and supply axis being revolvably installed is realized It connects, this, which is connected to the help of single actuating element especially central tension screw 500, can be established and discharge.

It will be described now by another exemplary embodiment of Fig. 6 to the Fig. 9 to roller tension system.Roller tension system can Using in the supply axis and identical supply roller being identical with the first exemplary embodiment.Therefore, these components will by using with First exemplary embodiment identical reference identification is referred to, to be made according to the construction of the component to wherein explanation With reference to.

Roller tension system includes stretching screw 600, with head 610, threaded portion 620 and is used for tensioning tool Central interior hexagon receive opening 630.Additionally in central tension screw 600, separator 700 is also set up, in supply roller Installation condition under the side of head 610 and supply roller towards head and at least inner part 710 positioned at stretching screw it is (flat Face outer surface) between.Force flux between stretching screw and supply roller is routed through separator here.

As visible in figures 7 and 8, separator is not closed in circumferential direction, but is designed to substantially sickle-shaped or C Shape has transverse opening.Port 725 is transitioned on a side herein in radially continuous transverse opening 727, port 725 Interior diameter is more bigger than the overall diameter of the threaded portion of stretching screw.The cross measured between the end of the free leg of separator Span width 728 to opening is more bigger than the overall diameter of the threaded portion of stretching screw, corresponds to through-hole in this exemplified case Twice of radius of curvature of circular portion.The inner part 710 of the separator of adjacent through-holes is correspondingly thicker or firmer Outer portion 720 is slightly flat, which abuts directly against the outer profile on head by its Internal periphery when installing stretching screw.

On inside of the separator 700 in face of supply roller 400, there is separator 700 flat radially-inwardly gap 713 to make Obtaining the circular annular bearing 714 towards supply roller in the outer region causes the tightening force of stretching screw in the annular bearing Supply roller is passed in 714 region.

The overall diameter of separator may be chosen such that the sufficiently large load-bearing surface for being respectively used for transmitting friction lock Or the big spaced radial of deep annular bearing causes to cause effective friction lock.Due to when using separator no longer Need to be transmitted to the head 610 of the stretching screw 600 of supply roller for direct force, so the diameter on head can be generally than other Exemplary embodiment is small.As can be clearly seen in Fig. 6, the central through hole 406 of the overall diameter D on head 610 than supply roller Interior diameter is smaller.Thus, it is possible to which supply roller is closed or removed to inserting without complete release tension screw 600 and by it from confession It is removed to the internal screw thread of axis.

When removing supply roller, since the mounting structure being shown in FIG. 6, following procedure next can be.Firstly, Stretching screw 600 is slightly discharged so that separator 700 is released by external hexagonal tensioning tool.It then can be laterally Separator is removed, this may be the transverse opening due to separator.Then supply roller can substantially be pulled open in the axial direction, especially It is more than the head of stretching screw being partially threaded into.Therefore in order to implement the replacement of roller, it is not necessary to complete release tension screw.? When new supply roller is installed, followed by opposite program, i.e., supply roller is pushed first be more than stretching screw head to attached Belong on part 304, be hereafter laterally embedded in separator, and finally again firmly tense stretching screw by tensioning tool, Then tightening force is transmitted to by supply roller by separator.

Multiple modifications are possible.Figure 10 shows the modification of separator 1000 by way of example, has and has cavetto The generally triangle shaped exterior contour in corner.Such as in the case where the modification of Fig. 6 to Fig. 8, lateral port is set and is made Separator correspondingly can be embedded in or removed when being screwed into stretching screw.

Figure 11 A shows the plan view of separator 1100, and Figure 11 B shows the section by separator 1100.Such as exist In the case where the modification of Fig. 6 to Fig. 8, flat radially-inwardly gap 1113 is constructed in inside of the separator 1100 towards supply roller On, so that the annular bearing towards supply roller causes the tightening force of stretching screw in the area of the annular bearing in the outer region Supply roller is passed in domain.Annular bearing is interrupted so that correspondingly forming the annular of three circumferential offsets in circumferential direction Segment or bearing area 1114-1,114-2 and 1114-3.

Claims (20)

1. one kind is used for the feedway (110) of molding machine (100), the feedway (110) is used for slender piece (115) The molding machine (120) of the molding machine is supplied to from workpiece storage device,

With at least one supply roller to (112,114), there are two supply roller (400), described two supply roller (400) cloth for tool It is set to the rotation axis being parallel to each other and the circumferential surface that can be driven with mutually opposing rotation mode, and pass through belt profile (410) it limits for guiding the supply roll gap by the slender piece (115),

Wherein, each of described supply roller is fastened to by being revolvably installed in a manner of replaceable supply roller roller tension system One end of associated supply axis (300), it is characterised in that:

The roller tension system has stretching screw (500,600), and the stretching screw (500,600) is relative to the supply roller Rotation axis be located at center and have threaded portion (520,620) and head (510,610), the head (510,610) It is wider relative to the threaded portion,

The gap (530,630) in the stretching screw is constructed, the gap (530,630) is opened wide simultaneously towards the head side And there is non-circular entrainment profile for guiding tensioning tool,

Separator (700,1000,1100) passes through at least one inner part (710) cloth under the installation condition of the supply roller It sets between the head (610) of the stretching screw (600) and the side towards the head of the supply roller,

Supply axis (300) has collar (302) and is adjacent to the end side associate member (304) of the collar (302) to insert Cooperate supply roller (400), and the supply roller has central through hole (406), the interior diameter of the central through hole (406) is greater than The overall diameter of the end side associate member, the overall diameter of the head (610) are less than the interior diameter of the through-hole (406).

2. feedway as described in claim 1, which is characterized in that the slender piece is line or pipe.

3. feedway as described in claim 1, which is characterized in that the gap (530,630) is configured to internal hexagon Gap.

4. feedway as described in claim 1, which is characterized in that the gap (530,630) is configured to axially through institute State the perforation gap of stretching screw.

5. the feedway as described in one in claim 1-4, which is characterized in that stretching screw (500, the 600) structure It makes as flat head dummy stretching screw, wherein the height (H) of the head (510,610) is smaller than the diameter of the threaded portion.

6. feedway as claimed in claim 5, which is characterized in that the height on the head is less than the straight of the threaded portion The 50% of diameter.

7. the feedway as described in one in claim 1-4, which is characterized in that the stretching screw (500) it is described The diameter on head (510) is at least twice of the size of the diameter of the threaded portion (520).

8. the feedway as described in one in claim 1-4, which is characterized in that on the head of the stretching screw The inside (512) towards the threaded portion on radially-inwardly gap (513) are set so that outstanding to the threaded portion Multiple bearing areas spaced apart are formed around annular bearing (514) or prominent to the threaded portion and in circumferential direction On the inside of the outer periphery on the head.

9. feedway as described in claim 1, which is characterized in that the separator (700,1000,1100), which has, to be used for Guidance passes through the port (725) of the threaded portion, wherein the port is transitioned into radially continuous transverse direction on a side It is open in (727), the span width (728) of the transverse opening (727) is greater than the overall diameter of the threaded portion (620) and small Maximum gauge in the head (610).

10. feedway as described in claim 1, which is characterized in that in the separator (700,1100) towards described Radially-inwardly gap (713,1113) are set on the inside of supply roller, so that around annular bearing outstanding (714) or Xiang Suoshu The prominent and spaced apart in circumferential direction multiple bearing areas (1114-1,1114-2,1114-3) of threaded portion are formed in On the inside of the outer periphery of the separator.

11. the feedway as described in claim 9 or 10, which is characterized in that the separator (700,1100) has circle Or circular-arc-shaped exterior contour.

12. the feedway as described in claim 9 or 10, which is characterized in that the separator (1000) has polygon shape The outer contour shape of shape.

13. feedway as claimed in claim 12, which is characterized in that the outer profile has cavetto corner.

14. feedway as claimed in claim 12, which is characterized in that the polygonal shape be triangle, square or Hexagonal shape.

15. the feedway as described in one in claim 1-4,9-10, which is characterized in that the collar (302) has End side loading end is attached at least one entrainment bolt (320) of the collar to carry the supply roller (400), described At least one entrainment bolt (320) protrudes past the loading end and the sized folder to be introduced into the supply roller In (402) with holes.

16. feedway as claimed in claim 15, it is characterised in that including clearance compensation device (360), the clearance is mended It is activatable so that when supporting the stretching screw in the entrainment spiral shell that device (360), which is repaid, by supporting the stretching screw Existing any clearance is eliminated between bolt and the entrainment hole.

17. feedway as claimed in claim 16, which is characterized in that the clearance compensation device (360) is mended with clearance It repays element (362), the clearance compensating element, (362) is arranged on the entrainment bolt (320) and by acting on it Axial force it is radially expansible, and the clearance compensation device is sized makes putting in the clearance compensation device Under loose state in the case where the supply roller (400) is carried in the collar, the actuation part of the clearance compensation device Protrude past the supply side (414) of the roll surface from the collar.

18. the feedway as described in one in claim 1-4,9-10, which is characterized in that the collar (302) has End side loading end is arranged on the outside of the collar (302) in face of the supply roller to carry the supply roller (400) Flat gap (313) makes the annular support surface for the supply roller be formed in the outside of the collar.

19. one kind is for being manufactured the molding machine (100) of component by slender piece (115), comprising:

Molding machine (120) has one or more shaping jigs；With

Feedway (110) is used to for slender piece being supplied to the region of the molding machine (120) from material stock device；

It is characterized in that

According to claim 1, one in -18 constructs the feedway (110).

20. molding machine (100) as claimed in claim 19, which is characterized in that the slender piece (115) is line or pipe.