CN101530868B - Roll feeder - Google Patents

Abstract

The present invention discloses a roll feeder (8) which comprises a pair of rollers (9, 10) that used to realize feeding operation of ribbon material through fastening and rotating. A supporting member (frame 13) is set on one side of each roller (9, 10) and each roller (9, 10) on each side is capable of rotating freely. Each roller is hollow inside. In a cantalever suspension structure, each roller is mounted on the supporting member and stretches into axis (18, 19) of each roller. An upper roller (9) is set as to rotate freely o circumference of a axis (18), and the axis (18) conjugates with a rolling bearing (23) between the outer annulus surface of the axis (18) and inner annulus surface of the roller (9), and can swing around central line of the roller (9) through relative movement of the rolling bearing (23) in a declining direction of central line of the axis (18).

Description

Roll feeder

Technical field

The present invention relates to a kind of roll feeder (roll feeder), this roll feeder is for example supplied to extrusion press by strip material.

Background technology

Generally speaking, with a series of equipment, continuously the banded sheet material (hereinafter referred to as strip material) being comprised of steel, aluminium etc. is supplied to extrusion press, and carry out the machining of extrusion process, excision processing etc., for example at Japanese Patent Application Publication communique, be disclosed for No. No.2003-181573.

In the said equipment, carry out extrusion process etc. (referring to Japanese Patent Application Publication communique JP 2003-181573 and JP 2004-142876).That is to say, the strip material (being coiled material (coil stock)) that makes to be wound into web-like along with the mechanism with being called as payoff reel (uncoiler) is rotated on expansion direction, from excircle, extracts required strip material out.The mechanism that use is called as roll feeder (or coiled strip batcher) and is positioned at the slip-stream (slipstream) of this payoff reel (the processing stream before extrusion press etc.) passes out to above-mentioned strip material the specified quantity of each extrusion press.

In the said equipment, roll feeder comprises pair of rolls (top roll and lower roll), and by clamping and rotate the feeding operation of strip material enforcement strip material.

By way of parenthesis, in above-mentioned roll feeder, the supporting structure of each roller is conventional prior art, and each roller is two ends type structures, and for example Japanese Patent Application Publication communique No.2001-30029 is disclosed.

More specifically, be arranged in the part of the housing (being called as " casing ", " framework " etc.) that is fixed on infield or be arranged on the both sides that member on this housing is positioned in each roller, the supporting member of usining as each roller.In addition, the beam warp for example stretching out from the two ends of each roller is rotatably installed in each supporting member by the rolling bearing such as ball bearing.In this way, each roller is rotatably supported on housing.

For example, as the disclosed roll feeder of Japanese Patent Application Publication communique No.2001-30029 in the situation that, be arranged on supporting member on the casing 4 that is fixed on infield (, fixed head 5,12 and movable platen 7) be positioned at each roller 2,3 both sides, as the supporting member of each roller 2,3.In addition, axle (, the right part 2a of rotatable shaft, the left part 2b of rotatable shaft, the right part 3a of rotatable shaft and the left part 3b of rotatable shaft) from each roller 2, stretch out 3 both sides, and via bearing 6,8,11 and 13 be installed into can be with respect to each supporting member (, fixed head 5,12 and movable platen 7) rotate freely.By such mode, each roller 2,3 is rotatably mounted by machine casing 4 as described above.

Because the supporting structure for each roller above-mentioned has two ends type structure, this routine roll feeder has following variety of issue:

(a) owing to thering is a large amount of expensive components, bearing for example, the structure of framework (housing) of holding supporting member is very complicated;

(b), because it is visually to check that whole roller and staff cannot approach the structure of roller near zone easily, cannot implement like a dream the situation inspection of roller or clean;

(c), due to can not the whole roller of visual inspection, adjusting roll gap or release opening amount be being difficult to of task;

(d), due to the weight of the parts whenever lifting up and down by releasing operation when at a high speed completing releasing operation, the instant impact that has a roller contacting with the strip material of processing very greatly and cause the problem of the indenture in material.

In addition, releasing operation is a side of up-down rollers to be raised to from inserting the state of strip material, open into the state that does not insert strip material in the direction separated with opposite side.Conventionally, in the situation that processing with extrusion press, after being fed to the strip material of predetermined quantity, need to carry out releasing operation the temporary transient strip material that discharges at every turn; With

(e), when pair roller substitutes operation, can not carry out the dismounting of framework.For example, the in the situation that of conventional prior art Japanese Patent Application Publication communique No.2001-30029, unless supporting member (being fixed head 5,12 and movable platen 7) is removed, otherwise roller 2,3 can not be substituted.For this reason, the replacement operation of roller is pretty troublesome.

And, naturally need to replace by wearing and tearing and the damaged roller that waits infringement, to increase the service life.In addition, even if wearing and tearing and damaged grade also do not further develop, corresponding with the physical property of strip material etc., when the physical property of the external peripheral surface from specific strip material contact is different, also need suitably to replace roller.

Summary of the invention

The object of the present invention is to provide a kind of roll feeder, this roll feeder has solved above problem points with simple roller supporting structure.

To achieve these goals, provide a kind of roll feeder, comprise pair of rolls, for by clamping and rotating the feeder operation that strip material realizes strip material, wherein, only the side at each roller arranges supporting member, and each roller is mounted to and can rotates freely in this side; Each roller inside is hollow; And each roller is arranged on to form from supporting member and extends to the axle of each roller inside, at least one in each roller is mounted to and can on the circumference of described axle, rotates freely, described axle coordinates with the rolling bearing being positioned between the external peripheral surface of described axle and the inner circumferential surface of described roller, and by the relative motion of described rolling bearing inside, swingable in the direction that the center line of described roller tilts at the center line with respect to described axle.

Here, " supporting member " refers to a part for the housing that is fixed on roll feeder infield or is fixed on the member of this housing.

Here, " the inner relative motion of rolling bearing " refers to, and for example, forms the outer shroud of rolling bearing with respect to the motion of interior ring.

And in a preferred embodiment of the invention, supporting member comprises installs lid to (mounted pair of covers), this installation lid is to being displaced to the closing position that covers each roller or the open position that exposes each roller.

In a preferred embodiment of the invention, roll feeder further comprises roller position adjusting mechanism, for adjust the gap of each roller during feeder operation.

In a preferred embodiment of the invention, roll feeder further comprises exercisable roller relieving mechanism, for carrying out the gap releasing operation wider than the gap during feeder operation provisionally that makes each roller; And wherein said roller relieving mechanism comprises bar, completes releasing operation by bar displacement.

Beneficial effect of the present invention is as follows:

(a) because roll feeder of the present invention only has, a side at each roller arranges supporting member and roller is arranged on the structure in cantilever shape, and the structure of supporting member is simplified relatively, such as the quantity of the parts of bearing, does not increase, and therefore becomes more economical;

(b) because each roller is arranged on to form from supporting member from supporting member, extend to the axle of each roller inside, can visually check whole roller;

(c), because roll feeder of the present invention has the structure that staff can approach roller near zone easily, can implement like a dream the situation inspection of roller or clean;

(d) because can visually check the whole roller of each roller, the adjustment of roll gap G or release opening amount (clearance G during releasing operation) is exactly being not difficult of task;

(e) because by each roller being arranged on to the simple structure in cantilever shape, having alleviated the weight of the parts that lift up and down by releasing operation.Even when completing releasing operation with high speed, the instant impact of the roller directly contacting with strip material can be very not large, and can not cause the indenture in strip material; With

(f) even when roller alternately operating, also can dismantle supporting member and complete this task.

While describing in detail below reading by reference to the accompanying drawings, above-mentioned and other object of the present invention and novel feature will present more completely from detailed description below.Yet it should be clearly understood that accompanying drawing is for illustration purpose, and be not the definition being intended to as to boundary of the present invention.

Accompanying drawing explanation

Fig. 1 is the lid perspective view in the close position that shows roll feeder;

Fig. 2 is the lid perspective view in an open position that shows roll feeder;

Fig. 3 is the front view of roll feeder;

Fig. 4 is the rearview of roll feeder;

Fig. 5 is the right view of roll feeder;

Fig. 6 A is the vertical cross section (being the skiagraph of V1 section in Fig. 3) of roll feeder;

Fig. 6 B is for explaining the view of the bearing state of top roll;

Fig. 7 is the horizontal sectional drawing (being the cross-sectional view of H1 section in Fig. 4) of roll feeder;

Fig. 8 A is for explaining the view of the principle of roller position adjusting mechanism and roller relieving mechanism to Fig. 8 C; With

Fig. 9 A and Fig. 9 B are the views of the swing of explanation top roll.

The specific embodiment

Below with reference to accompanying drawing, explain in detail the preferred embodiments of the present invention.

A. the overall structure of roll feeder

Fig. 1 is the perspective view that shows the roll feeder 8 of embodiment, lid 11,12 (state of the closing position of lid 11,12 in describing) in the close position.

Fig. 2 is the perspective view that shows roll feeder 8, lid 11,12 (state of the open position of lid 11,12 in describing) in an open position.

Fig. 3 is the front view of roll feeder 8.

Fig. 4 is the rearview of roll feeder 8.Fig. 4 shows the state that will describe in the back of having removed (showing in Fig. 7) such as lid (lid) 17, handles 15.

Fig. 5 is the right view of roll feeder 8.

Fig. 6 A is that vertical cross section (being the skiagraph of V1 section in Fig. 3) and Fig. 6 B of roll feeder 8 is for explaining the view of the bearing state of top roll 9.

Fig. 7 is the horizontal sectional drawing (being the cross-sectional view of H1 section in Fig. 4) of roll feeder 8; In addition, Fig. 3 and Fig. 5-7 have shown the state that removes lid 11,12.

Below, as the expression method of horizontal direction, the right side in Fig. 6 A (upside in Fig. 7) term is called front side or face side, and left side (downside in Fig. 7) term in Fig. 6 B is called rear side or rear side.

Here as shown in Figure 1, Figure 2, shown in Fig. 4 etc., roll feeder 8 comprises pair of rolls 9,10; Motor for driven roller 9,10; Roller 9,10 and motor 14 are installed on its framework 13; Can cover the lid 11,12 of each roller 9,10; The handle 15 of adjusting for roller position; With the bar 16 for releasing operation.

In addition, framework 13 is provided with the driving mechanism 40 for driven roller 9,10, and wherein motor 14 is as drive source; Be used for correspondingly adjusting with the operation of handle 15 the roller position adjusting mechanism 50 of the clearance G of roller 9,10; With for realize the roller relieving mechanism 70 of the releasing operation of roller 9,10 by action bars 16.

Below, in some cases, the roller 9 that is positioned at upside will be called as top roll 9, and the roller 10 that is positioned at downside will be called as lower roll 10.In addition, the lid 11 of upside will be called upper cover 11, and the lid 12 of downside will be called lower cover 12.

Framework 13 is the housings that are fixed on the place that roll feeder 8 is installed.The inside of framework 13 is similar hollow boxes.The whole shape of framework 13 (from the overall shape above or when the back side observes) is convex, and lower part has the width larger than lower part, as shown in Figure 3 and Figure 4.

Described framework 13 use are by metal, the founding materials manufacture that for example steel and aluminium obtain.In addition, the rear side of framework 13 is open, as shown in Fig. 4 and Fig. 7.Yet, under confined state, with showing in lid 17(Fig. 7) and close the backside openings of framework 13.As previously mentioned, Fig. 4 shows to have removed when observing framework 13 inside from rear side and covers 17 and the state of handle 15.Framework 13 plays supporting member of the present invention, and its central roll 9,10 is arranged in cantilever shape.

As shown in Figure 6A, roller 9,10 is cylindrical.Roller 9,10 is by clamping and rotating and realize strip material feeder operation, with external peripheral surface by strip material be fed to through.For example, strip material is distad fed to from nearside along the direction perpendicular to the gap shown in Fig. 5 or Fig. 6 A.In Fig. 3, from left side, be fed to the right strip material.Roller 9, shows in 10(Fig. 6 A) between clearance G be set as pressure weight (pressure weight) by the numerical value of the thickness from strip material sheet (by the gauge of the pressure extrusion of roller 9,10 and the strip material of contraction) deduction.

In addition, roller 9,10 is arranged on framework 13 with cantilever shape.Therefore, supporting member 13(framework 13) be only arranged on a side of each roller 9,10, at each roller 9,10 of this side, be mounted to and can rotate freely.And, each roller 9,10 formed to be arranged on respectively from framework 13 extend on the axle 18,19 of each roller 9,10 inside.Below, the axle 18 that top roll 9 is installed on it will be called roll shaft 18, and on it, axle 19 of installation lower roll 10 will be called lower roller shaft 19.

B. the supporting structure of top roll and circle configurations

The supporting structure of top roll 9 and the circle configurations of top roll 9 will be explained below.As shown in Fig. 7 and Fig. 6 A, columniform top roll installation portion 13a is formed on the horizontal center of the anterior upper part of the framework 13 extending forward.In addition, dead eye 13b is formed on the inner side of top roll installation portion 13a, the circular section shape that has forward and move backward.

In addition, upper roll shaft 18 is for to have the solid shafting (non-hollow shaft) of circular section shape, and is arranged through dead eye 13b.Upper roll shaft 18 is divided into the different a plurality of parts of outside dimension in the axial direction.Therefore, as shown in Figure 6A, upper roll shaft 18 starts by order part I18a, part II18b, part III18c, part IV18d and part V18e from rear side end.In these parts, part II18b and part IV18d have than the larger outside dimension of other parts (part I18a, part III18c and part V18e).Rolling bearing 20 is engaged between the excircle of part II18b and the inner periphery of dead eye 13b (that is, the inner periphery of top roll installation portion 13a).Rolling bearing 21 is engaged between the excircle of part IV18d and the inner periphery of dead eye 13b.Utilize rolling bearing 20,21, in center line C1(Fig. 4 that upper roll shaft 18 can dead eye 13b and Fig. 7, show) as central rotation.Center line C1 is equivalent to the part II18b of roll shaft 18 and the center line of part IV18d.

By way of parenthesis, as shown in Fig. 4 and Fig. 7, the center line C2 of the part I18a of upper roll shaft 18 and part V18e is offset an eccentric size D1 slightly with respect to center line C1.That is, part I18a and part V18e are small with respect to the eccentricity of part II18b and part IV18d in dimension D 1.

Secondly, ball bearing 22(rolling bearing) be engaged in part I18a external peripheral surface and described later can the inner periphery of moving plate 55 between.And, ball bearing 23(rolling bearing) be engaged in external peripheral surface and the top roll 9(major diameter 9b of portion described later of part V18e) inner circumferential surface between.Ball bearing is a kind of a plurality of balls that are engaged between interior ring and outer shroud that comprise, and with retainer, maintains a kind of rolling bearing in the gap (space) of each ball.

Here the reference number of the primary structure element of ball bearing 23 will be explained.

Particularly, as shown in Figure 7, ball bearing 23 comprises a plurality of ball 23c that are engaged between interior ring 23a and outer shroud 23b, and with retainer (omitting diagram), maintains the gap of each ball 23c of ball bearing 23.

The interior ring 23a of ball bearing 23 is inserted on the excircle of part V18e of roll shaft 18, with the end plate 24 being arranged on roll shaft 18, prevents bearing 23 slippages.End plate 24 is annular slab (doughnut shaped plate), has the external diameter that is greater than part V18e and is less than interior ring 23a.End plate 24 is arranged to contact with the peripheral part of interior ring 23a end face, and with screw 25, is fixed on the front end surface (front end surface of part V18e) of upper roll shaft 18, and screw 25 passes end plate 24 and is fastened in part V18e from the end face side of upper roll shaft 18.

The pad 26 between the part IV18d of upper roll shaft 18 and interior ring 23a in addition, with annular shape.Pad 26 was inserted into before interior ring 23a on the excircle of part V18e of roll shaft.

On the other hand, the outer shroud 23b of ball bearing 23 be installed on the inner circumferential surface of top roll 9, the position of axial centre roughly.

Minor diameter 9a is formed in a part for the front side on the inner circumferential surface of top roll 9, and the 9b of major diameter portion is formed in a part for the rear side on the inner circumferential surface of top roll 9.The diameter of the 9b of major diameter portion is larger than the diameter of minor diameter 9a, and is substantially equal to the external diameter of the outer shroud 23b of ball bearing 23.Be formed on the border of minor diameter 9a and the 9b of major diameter portion with the end difference 9c of the end contact of outer shroud 23b.

The outer shroud 23b of ball bearing 23 is arranged on the inner circumferential surface of top roll 9, approximate centre position in the axial direction (foremost portion of the 9b of major diameter portion) located, outer shroud 23b inserts the 9b of major diameter portion, one of them end face contacts with end difference 9c, and other end contacts with pad 27.Pad 27 is annular part, inserts the 9b of major diameter portion after outer shroud 23b.An end face of pad 27 contacts with outer shroud 23b, and opposite side end face contacts with keeping circle 28.Keep circle 28 to be formed in the slit (omission reference number) in the 9b of major diameter portion for inserting, to prevent outer shroud 23b or pad 27 slippages.

Top roll 9 is arranged on roll shaft 18 to can rotate freely with one of ball bearing 23 as explaining above.

In addition, the center of top roll 9 must overlap with center line C2 above-mentioned, and the center of top roll 9 must be on center line C2 with respect on roll shaft 18 rotations.More particularly, top roll 9 must rotate around center line C2 along with ball bearing 23.

About the rolling bearing of explaining above, ball bearing 23 etc. for example, may relative motion in bearing to making the interior degree of encircling the center line of 23a and the center line relative tilt of outer shroud 23b.More particularly, for example, outer shroud 23b can swing with respect to interior ring 23a to a certain extent by sliding between ball 23c and interior ring 23a or outer shroud 23b.Due to this cause, the center line of top roll 9 with respect on swingable in the direction that tilts of the center line C2 of roll shaft 18.

Fig. 6 B is for explaining clearly the view of bearing state of this motion of top roll 9.

And Fig. 9 A and Fig. 9 B are for clearly stating the view of example of the oscillating motion of top roll 9.

In Fig. 6 B, top roll 9 can slightly swing in the direction indicating with annular arrow.More particularly, for example, the front side of roller 9 can swing in downward direction as shown in Figure 9 A, and the front side of top roll 9 can swing in upward direction as shown in Figure 9 B.Even the deviation of the lower roller shaft 19 causing by the reaction force by from strip material etc. make lower roll 10 from normal position (in the case, level) some tilt, top roll 9 will be followed this swing.The effect obtaining is to make the aligning respectively of top roll 9 and lower roll 10 and keeping parallelism always.

In addition, as shown in Figure 7, synchromesh gear 29 is fixed to the posterior edges of top roll 9.Synchromesh gear 29 is along with top roll 9 rotates around center line C2.

In addition, as above-mentioned, because top roll 9 is arranged on upper roll shaft 18, can easily remove by unclamping screw 25 top roll 9.More particularly, when unclamping screw 25 and then removing screw 25 and end plate 24, the top roll 9 that is arranged on ball bearing 23 inner sides outwards can be moved to front side and be removed from upper roll shaft 18.

C. the mounting structure of lower roll and circle configurations

The mounting structure of lower roll 10 and the circle configurations of lower roll 10 will be explained below.

As shown in Figure 6A, in the front portion of framework 13, at the lower position of top roll installation portion 13a as above, lower roll installation portion 13c forward and extend back.Dead eye 13d is formed on the inner side of lower roll installation portion 13c, the circular section shape that has forward and move backward.

And lower roller shaft 19 is for to have the solid shafting (non-hollow shaft) of circular section shape, and be arranged through dead eye 13d.Lower roller shaft 19 is divided into the different a plurality of parts of outside dimension in the axial direction.Therefore, as shown in Figure 6A, lower roller shaft 19 starts by order part I19a, part II19b, part III19c, part IV19d and part V19e from rear side end.In these parts, part II19b has the outside dimension larger than part I19a.And part III19c has the outside dimension larger with part II19b, and it is maximum diameter dimension.In addition, the external peripheral surface of part IV19d tilts in the axial direction, and wherein external dimensions is less towards front side.More particularly, the external peripheral surface of part IV19d is cone shape, and external diameter is less towards front side.Part V19e is less than the minimum outer diameter portion of part IV19d significantly.

Two ball bearings 30,31 vertically (horizontal direction in Fig. 6 A) are engaged in the excircle of part II19b and the gap between the inner periphery of dead eye 13d (that is, the inner periphery of lower roll installation portion 13c) of lower roller shaft 19.More particularly, ball bearing 30 is engaged between the posterior edges and dead eye 13d of part II19b, and ball bearing 31 is engaged between the forward edge and dead eye 13d of part II19b.Utilize ball bearing 30,31, the center line that lower roller shaft 19 can dead eye 13d (omitting diagram) is as central rotation.As long as ignore the deviation (relevant to flexibility) of lower roller shaft 19 etc., the center line of dead eye 13d overlaps with the center line of lower roller shaft 19, and parallel with above-mentioned center line C1 or C2.And the center line of dead eye 13d is positioned at above-mentioned center line C2 below.

On the other hand, the front part of lower roller shaft 19 (part of holding portion IV19d and part V19e) is inserted on the inner side of lower roll 10.And the part IV19d of lower roller shaft 19 is fixed to lower roll 10, in axial approximate centre position, (that is, conical portion 10a described later) is pressed on the inner surface of lower roll 10.

More particularly, as shown in Figure 6A, the part 10a of cone shape is formed on the inner circumferential surface of lower roll 10, axial approximate centre position, and lower roll 10 is along with diameter diminishes to front side and tilts.The geometry of conical portion 10a is corresponding to the external peripheral surface of the part IV19d of cone shape, and this can coordinate with conical portion 10a the excircle of part IV19d.

In addition, the place ahead of the conical portion 10a in the inner circumferential surface of lower roll 10, further forms rear minor diameter 10b and the front major diameter 10c of portion to front side order.And the rear of the conical portion 10a in the inner circumferential surface of lower roll 10, the 10d of major diameter portion after rear side forms.The diameter of rear minor diameter 10b is identical with the minimum diameter of conical portion 10a, and the diameter of the front major diameter 10c of portion is greater than the diameter of rear minor diameter 10b.Further, the diameter of the rear major diameter 10d of portion is greater than the maximum gauge of conical portion 10a, and is arranged to be greater than the external diameter of the part III19c of lower roller shaft 19.Be formed on the border of rear minor diameter 10b and the front major diameter 10c of portion with the end difference 10e of the end contact of fixed head 32.

Fixed head 32 be external diameter roughly identical with the front major diameter 10c of portion and insert before the annular slab of the major diameter 10c of portion, the internal diameter of centre bore is less than rear minor diameter 10b.The axle of screw 33 inserts the centre bore of fixed head 32.From front side, the axle of screw 33 is inserted to the centre bore of fixed head 32, and tip of screw is fastened in the screwed hole at front surface (that is, the front end surface of the part IV19e) center that is formed on lower roller shaft 19.The head of screw 33 is greater than the centre bore of fixed head 32, and contacts with the front side surface of fixed head 32.Therefore, fastening and while supporting tightly when screw 33 plate 32 that is fixed, by screw 33 pulling force, move lower roller shaft 19 to front side with respect to lower roll 10.In addition, when moving lower roller shaft 19 to front side with respect to lower roll 10, with powerful, the external peripheral surface of the part IV19d of lower roller shaft 19 (surface of cone shape) is pressed onto on the conical portion 10a of lower roll 10.By part IV19d, being connected (push away-be connected) with the pressure of conical portion 10a is securely fixed in lower roller shaft 19 on lower roll 10.

In addition, in the front major diameter 10c of portion of lower roll 10, be that separating plate 34 rather than screw 33 are inserted into front side.Separating plate 34 is roughly the same with fixed head 32 spatial forms.Before separating plate 34 being inserted with the fastening screw putting in place 33, after the 10c of major diameter portion, these parts are in annular shape.The rear side surface of separating plate 34 is relative with screw 33 with minim gap, and front side surface contacts with keeping circle 35.Keep circle 35 for inserting the parts that are formed on the groove in the front major diameter 10c of portion, to prevent separating plate 34 slippages.Further, although the internal diameter of the centre bore in separating plate 34 is less than the head of screw 33, the instrument that centre bore forms such as nut wrench can insert and the size of rotary screw 33.

By this structure, can realize following effect.

Particularly, when unclamping direction rotation screw 33 with above-mentioned instrument edge, the head of screw 33 will be pressed on the separating plate 34 of front side.As a result, lower roll 10 will be pressed on front side with respect to lower roller shaft 19.For this reason, by unclamping rotary screw 33 in direction with above-mentioned instrument, can easily discharge above-mentioned part IV19d and be connected with the pressure between conical portion 10a simply, and can promptly lower roll 10 be removed from lower roller shaft 19.

According to the structure of explaining above, lower roll 10 is fixed to lower roller shaft 19.And the center line of lower roll 10 overlaps with the center line of lower roller shaft 19, and be positioned at as described above below the center line C2 of top roll 9.

As shown in Figure 6A, synchromesh gear 36 is fixed to the posterior edges of lower roll 10.Synchromesh gear 36 meshes with the synchromesh gear 29 of roller 9 above-mentioned, and along with lower roll 10 rotations.And, even if the wheel backlash between synchromesh gear 36 and synchromesh gear 29 is set the clearance G of being adjusted roller 9,10 by roller position adjusting mechanism 50 engagement for, can not cause due to mechanical breakdown loose, that bounce etc. (backlash) yet.

In addition, follow-up pulley 42 described later is fixed in the excircle of posterior edges (that is, part I19a) of lower roller shaft 19.

D. the structure of lid

To explain lid 11,12 below.

Lid 11,12, for having the parts of enforceable shape, can cover excircle and the anterior end surface of each roller 9,10, as shown in Figure 1 or 2. Lid 11,12 is by hinge 11a, and 12a and framework 13 connect each other, and lid 11,12 can be displaced to and covers the closing position (as shown in Figure 1) of each roller 9,10 and be displaced to the open position (as shown in Figure 2) that exposes each roller 9,10.

In addition, as depicted in figs. 1 and 2, be useful on the spiral knob 37 of each lid 11,12 of locking in closed position, fastening this spiral knob 37 is to clip together the end face side of each lid 11,12 tightly.

Further, when seeing from closing position, each lid 11,12 has the transparent part that is positioned at each roller 9,10 outer circumferential side.Therefore, even also can visually check the situation of each roller 9,10 in closing position.

Secondly, motor 14 is arranged on the anterior lower-left side of framework 13, and is parallel to each roller 9,10.Motor 14 is the motor for the rotation of each roller 9,10 of SERVO CONTROL, and is controlled by control system (omitting diagram).

Secondly, as shown in Figure 4, driving mechanism 40 comprises follow-up pulley on the output shaft that is fixed to motor 14 41 and is fixed to for example timing belt of the follow-up pulley 42 of the rear end of lower roller shaft 19, the band 43(that reels around follow-up pulley 41 and follow-up pulley 42) and for maintaining the regulating wheel 44 with 43 suitable tension force.Follow-up pulley 42 has the diameter that is greater than follow-up pulley 41.Therefore, the rotation of motor 14 has the structure that deceleration is sent to lower roller shaft 19 and lower roll 10.In addition the synchromesh gear 36,39 that, the rotation of lower roll 10 is explained is above sent to top roll 9.Therefore, top roll 9 rotation together with lower roll 10 interlockings also.

In addition as shown in Figure 4, solid line has shown follow-up pulley 42 and with 43 states that removed.Dotted line shows follow-up pulley 42 and is with 43.

E. roller position adjusting mechanism

To explain for adjust the roller position adjusting mechanism of the clearance G of roller 9,10 corresponding to the operation of handle 15 below.

Roller position adjusting mechanism 50 is the mechanisms of (during feeder operation) adjusting play G when being fed to strip material for the roller 9,10 in clamping and rotation strip material.That is, clearance G is in releasing operation still under nonevent state.

As shown in Fig. 7 and Fig. 4, roller position adjusting mechanism comprise handle 15, upper roll shaft 18, handle pressing device 51, handle back-moving spring 52, handle axle 53, slide block 54, can moving plate 55, position alignment pin 56 etc.In addition upper roll shaft 18 and can moving plate 55 grades also form the parts of roller relieving mechanism described later.

As shown in Figure 7, position alignment pin 56 is the parts in the upper right edge embedding on framework 13 rear portions, and it is most advanced and sophisticated to have the acute angle stretching out backward.

Handle 15 is complete dish type, and through hole 15a is formed on center.In the rear surface of handle 15, the circumference of through hole 15a has cylindrical sleeve (hub) 15b extending back.In addition, cylindrical grasping part 15c is formed on the periphery of handle 15.Further, position locating hole 15d forms the point-like circumferential shapes with a plurality of predetermined gap marks, and the end of position alignment pin 56 is coupled to the front portion of handle 15 there.

Handle 15 is mounted to and can moves around with respect to handle axle 53.Yet when using the rearward end (part I53a described later) of inserting the key 57 locked hand axles 53 in through hole 15a, this can not rotate handle 15.

Handle pressing device 51 is for being fixed on the parts of the rear end face of handle axle 53 with screw 58.Handle back-moving spring 52 is for being positioned at the wind spring on the sleeve 15b excircle of handle 15, and fits between handle 15 and handle pressing device 51 and be pressed and shrink.52 pairs of handles 15 of handle back-moving spring are given energy forward.By resisting the power of energizing of handle back-moving spring 52 and pulling back, handle 15 can be moved on to the state of position alignment pin 56 disengaging configuration locating hole 15d.Yet, not applying under the nature of external force, the power of energizing of handle back-moving spring 52 is squeeze grip 15 forward, and handle 15 is maintained to any position of insertion position locating hole 15d of position alignment pin 56.

As shown in Figure 3, exist and be installed on the positive outer scale plate 59 of placing of handle 15, this scale plate 59 has the digital scale that etching has the clearance G of indication roller 9,10.In addition, as shown in Fig. 1 or Fig. 5, groove 60 is formed in right lateral surface, has shown the adjustment position corresponding with scale plate 59.For example, with regard to the location of groove 60, when scale plate 59 is read the scale of " 1.0 ", known clearance G will be adjusted to 1.0 millimeters.In addition, for example, in each position of realizing the numerical value of each clearance G (, 0.2 millimeter, 0.4 millimeter, 0.6 millimeter, 0.8 millimeter, 1.0 millimeter, 1.2 millimeter, 1.4 millimeter, 1.6 millimeter, 1.8 millimeter) corresponding with each scale of scale plate 59, form position locating hole 15d above-mentioned.

Except the keyway part that key 57 inserts, the solid shafting that handle axle 53 is circular section shape, and be divided into outside dimension different a plurality of parts vertically.More particularly, as shown in Figure 7, handle axle 53 starts by order part I53a, part II53b, part III53c, part IV53d and part V53e from rear side end.In these parts, part II53b has the external diameter larger than part I53a.And part III53c has the outside dimension larger than part II53b, and it is maximum diameter dimension.In addition, the external diameter of part V53e and part II53b are roughly the same.

In addition handle axle 53 is installed on the handle axle installation portion 13e of framework 13.More particularly, as shown in Figure 1 and Figure 7, columniform handle axle installation portion 13e forms forward and extends in the left upper portion of framework 13 front portions.Dead eye 13f is formed on the inner side of handle axle installation portion 13e, the circular section shape that has forward and move backward.As shown in Figure 7, the center line C3 of dead eye 13f is parallel to the center line C1 of roll shaft 18, C2.In addition,, in dead eye 13f, columniform front side bearing portion 61 is inserted from rear side.The leading section of handle axle 53 (part V53e) inserts in front side bearing portion 61 rotating freely.

In addition, the rear end face of front side bearing portion 61 is relative with slide block 54 with minim gap.In addition, sliding bearing 62 is got involved the inner periphery of front side bearing portion 61 and the gap between the excircle of part V53e, and in the gap between front side bearing portion and slide block 54.Sliding bearing 62 is, for example, use kollag without cunning dynamic bearing.

In addition, as shown in Figure 7, rear bearing portion 63 is positioned at handle axle installation portion 13e rear in framework 13.With screw brake, rear bearing portion 63 is fixed to framework 13 upper walls (omitting diagram) in top.Through hole (omission reference number) is formed in the lower part of rear bearing portion 63, the position of inserting at the part II53b of handle axle 53.The center line of the through hole of rear bearing portion overlaps with center line C3.Further, the lower front surface of rear bearing portion 63 is relative with the back edge surface of the part III53c of handle axle 53 with minim gap.In addition, the gap that sliding bearing 64 is got involved between rear bearing portion 63 and part III53c, and in the gap between the inner periphery of the through hole of rear bearing portion 63 and the excircle of part II53b.Be similar to above-mentioned sliding bearing 62, sliding bearing 63 is, for example, use kollag without cunning dynamic bearing.

And, except handle 15, in Fig. 4, shown the state that handle axle 53, rear bearing portion 63 etc. are removed.

As previously described, with comprising that the two supports structure of front side bearing portion 61, sliding bearing 62 and rear bearing portion 63 is installed to handle axle 53 on framework 13, handle axle 53 can center line C3 as central rotation.The center line C3 pointing out above overlaps with the center line of the part II53b of handle axle 53 and part V53e.In addition, center line C3 also overlaps with the center line of the part I53a of handle axle 53 and the center line that is arranged on the handle 15 on part I53a.

By way of parenthesis, as shown in Figure 7, the center line C4 of the part IV53d of handle axle 53 is offset an eccentric size D2 slightly with respect to center line C3.That is, part IV53d is small with respect to the eccentricity of part II53b and part V53e in dimension D 1.

Secondly, slide block 54 is complete cylindrical parts, and the position being inserted on inner side at the part IV53d of handle axle 53 has through hole 54a.The center line of through hole 54a overlaps with above-mentioned center line C4.Two plane 54b, shown in 54c(Fig. 4) be formed on the peripheral side up and down of slide block 54, slide block 54 slidably with can moving plate 55 on the upper inner surface of aftermentioned sunk area 55b contact with lower inner surface.

In addition, when swing handle 15 and handle axle 53 rotation, center line C4 rotates on the circumference of center line C3.Associated, slide block 54 also will swing around center line C3.When rear side from shown in Fig. 4 is observed, slide block 54 will move up and down, and the while is at square upward sliding back and forth roughly.

Secondly, can moving plate 55 for being substantially equal to the parts of similar plate of the cross-sectional width of part IV53d, for handle axle 53 and slide block 54(as shown in Figure 7).When rear side from Fig. 4 is observed, can moving plate 55 form the shape of essentially rectangular, and flatly centralized positioning on above-mentioned center line C2.Dead eye 55a is formed on can moving plate 55 center.Dead eye 55a is combined with above-mentioned ball bearing 22.The part I18a of upper roll shaft 18 is inserted on the inner side of ball bearing 22 (referring to Fig. 6 A).The center line of dead eye 55a overlaps with above-mentioned center line C2.Therefore, can centered by center line C2, rotate with respect to upper roll shaft 18 by moving plate 55.

In addition, when observing from rear side (side below), sunk area 55b be formed on can the right-hand member surface of moving plate 55 on, and sunk area 55c be formed on can the left end surface of moving plate 55 on.And two planes (omission reference number) are formed in the inner surface up and down of sunk area 55b, the plane 54b of these two planes and above-mentioned slide block 55,54c become one slidably (unified).In this way, slide block 54 can be in the direction of following plane 54b with respect to can moving plate 55 moving linearlies (that is, sliding).

And, at handle 15, being set in benchmark (for example adjusts under the normal condition of position, scale plate 59 is set at as above-mentioned to be read under the state of groove 60 positions of scale that indication clearance G is adjusted to 1.0 millimeters), center line C1, center line C2, center line C3 and center line C4 are configured to all be present on roughly the same horizontal plane, as shown in Figure 4.

In addition, as shown in Figure 6A, sunk area 55d be formed on can the center upper surface of moving plate 55 in, can in bottom end, be combined with roller by pressing spring 65 by moving plate 55.Although simplify in Fig. 6 A and shown roller pressure spring 65, roller is actually the Compress Spring identical with above-mentioned handle back-moving spring 52 by pressing spring 65.Roller is housed in roller by press button 66 inside by the upper part of pressing spring 65.Roller is pressed press button 66 for cylindrical parts, is formed with threaded portion 66a on the excircle of bottom, and the grasping part 66b with the diameter larger than threaded portion 66a is formed on top excircle.The upper position place of sunk area 55d in the upper wall of framework 13 forms screwed hole 13i, and roller is securable to this screwed hole 13i by the threaded portion 66a of press button 66.By threaded portion 66a being fastened in screwed hole 13i from upper part, roller is arranged on the upper wall of framework 13 by press button 66.

And roller fits in roller by being pressed and shrinking between the upper wall of press button 66 and above-mentioned sunk area 55d by pressing spring 65, and can be energized downwards at moving plate 55 center.

In this way, the power that roller is pressed downwards by pressing spring 65 works, thereby upper roll shaft 18 is above usingd center line C1 as central rotation at descent direction (that is, the descent direction of top roll 9).Therefore,, when the thicker strip material of the clearance G than arranging is inserted between roller 9,10, the roller pressure ( roller 9,10 clamps the power of strip material) being applied in strip material is suitable by the power of energizing of pressing spring 65 with roller.

And when catching roller by press button 66 and passing through grasping part 66b rotating roller by press button 66, the amount of tension that roller is pressed press button 66 is adjusted.Therefore, likely change roller by the length of pressing spring 65 (be just pressed and contraction state under length), this has adjusted roller by the power of energizing of pressing spring 65 (that is, roller pressure).

F. roller relieving mechanism

Explanation is used for realizing the roller relieving mechanism 70 of the releasing operation manually or automatically of roller 9,10 below.

As shown in Fig. 4 and Fig. 7, roller relieving mechanism 70 comprise bar 16, upper roll shaft 18, can moving plate 55, cam-follower 71, release shaft 72 and cylinder 73.

Figure 4 shows that the transverse views of the cam-follower axle 71a at the upper position place that is arranged on above-mentioned sunk area 55c in can moving plate 55.Cam-follower 71 is little cylindrical roll, is mounted to and can rotates freely with respect to cam-follower axle 71a.The bottom excircle of cam-follower 71 stretches in sunk area 55c, as shown in Figure 4 slightly.

Bar 16 and release shaft 72 are installed to the release shaft installation portion 13g of framework 13.

More particularly, as shown in Figure 3 and Figure 7, release shaft installation portion 13g is cylindrical and is formed on the anterior right side upper part of framework 13 and extends forward.Dead eye 13h is formed on the inner side of release shaft installation portion 13g, the circular section shape that has forward and move backward.Except all 72 grades of recess as described later, the solid shafting that release shaft 72 is circular section shape, and be divided into outside dimension different a plurality of parts vertically.More particularly, as shown in Figure 7, release shaft 72 starts by order part I72a, part II72b and part III72c from rear side end.In these parts, part II72b has than part I72a and the larger external diameter of part III72c.In addition, as shown in Figure 4, in a part for excircle, in part I72a, form semicircular scallop 72d, and that the axle right-angle cross-section of part I72a is shaped as is thick crescent.

In addition, part I72a is positioned at sunk area 55c that can moving plate 55.Release shaft 72 is positioned at the position that part III72c inserts dead eye 13h.In addition, the bottom of bar 16 is fixed to the front end of release shaft 72 with screw 77, and supports with plate 76.The center line of release shaft 72 overlaps with the center line of dead eye 13h.Plate 76 is for being inserted in the annular slab between the head of screw 77 and the bottom of bar 16.Through hole (omission reference number) is formed on the center of bar 16 bottoms.The nail bar (shank) of screw 77 is through the inner side of plate 76 and the through hole of bar 16, and center is fastened in the front end surface of release shaft 72.By such mode, under bar 16, be fixed to the front end of release shaft 72.And, with release shaft 72 and bar 16 that sliding bearing 74,75 is installed in dead eye 13h, can centered by the center line of dead eye 13h, rotate.Sliding bearing 74,75 is complete cylindrical.In these sliding bearings, sliding bearing 74 is coupled between the rear side and dead eye 13h of part III72c, and sliding bearing 75 is coupled between the front side and dead eye 13h of part III72c.Sliding bearing 74,75th,, for example, use kollag without cunning dynamic bearing.

In addition, the part I72a of release shaft 72 is positioned at cam-follower 71 belows and contacts with cam-follower 72.In addition, whenever bar 16 normal position shown in solid line (position under the normal condition that releasing operation does not occur) in Fig. 3, the scallop 72d of part I72a is as shown in Figure 4 by the position directly over facing roughly, and under the excircle of cam-follower 71, part will contact with scallop 72d.In this structure, by maintain be fed to during (in non-release operating period) clearance G of using and the setting of doing with roller position adjusting mechanism.

And, whenever bar 16 transforms to off-position shown in dotted lines in Figure 3 (completing the position of releasing operation), when observing from rear, the scallop 72d of part I72a is in the face of the position that tilts left, and under the excircle of cam-follower 71 part by contact the limit that above pushes away scallop 72d.As a result, this makes to move by moving plate 55, thereby left side that can moving plate 55 moves up (rising) (when the rear from Fig. 4 is observed).In this structure, complete releasing operation, make the gap during the clearance G of each roller 9,10 is temporarily wider than feeder operation.

Therefore,, when carrying out releasing operation, top roll 9 moves up and in roller 10 separation of upward direction up and down.Generally speaking, Here it is roller 9,10 is in wide open position (discharging) time, and now strip material is from clamped state transformation to not clamped state.

In addition, bar 16 can and be used in the process of spiral operation, initially strip material is inserted between roller 9,10 by manual displacement.For example, as the structure of and operation mechanical interlocked with the bent axle of extrusion press, this structure can also be in the process of machining mechanical response effectively carry out releasing operation.

Below as shown in Figure 4, when observing from behind, the upper/lower positions (upper/lower positions of above-mentioned sunk area 55c) that cylinder 73 is arranged on can the edge, the left side of moving plate 55 is located.The air pressure that cylinder 73 use are supplied with via pipe 78 upwards push away piston 73a, and have the piston of making 73a and return to entopic wind spring 73b.Piston 73a is engaged in the lower side of left side edge portion that can moving plate 55.When supplying with air pressure, edge, the left side that can moving plate 55 is pushed upwardly and mobile preset distance.This has formed the structure that when being indexed to off-position with bar 16 similar mode completes releasing operation.

G. operation

Below with reference to Fig. 8, explain roller position adjusting mechanism 50 in above-mentioned structure and the operation of roller relieving mechanism 70.

Fig. 8 A is for explaining the view of the principle of roller position adjusting mechanism 50 and roller relieving mechanism 70 to Fig. 8 C.

In these figure, Fig. 8 A is for explaining the schematic diagram of the mechanism of roller position adjusting mechanism 50 and roller relieving mechanism 70.In addition, Fig. 8 B is for explaining the schematic diagram with respect to the adjustment state of foil (strip material of relative thin), and Fig. 8 C is for explaining the schematic diagram with respect to the adjustment state of thick sheet metal (relatively thick strip material).

During mechanism in the structure of observing roller guiding mechanism 50 and roller relieving mechanism 70, with respect to framework 13, arranging can moving plate 55, as shown in Figure 8 A.In addition, at Fig. 8 A, in Fig. 8 C, annulet represents reference symbol C1～C4, and the said mechanism of the revolute pair (such as by realizations such as bearing 20, bearing 22, bearings 62) that is centered in above-mentioned center line C1～C4 is described.

In addition, due to structure involve slide block 54 with respect to sliding pair that can moving plate 55, at Fig. 8 A, show a rectangle.And from lower surface supporting, left end that can moving plate 55 is supported by the part I72a of release shaft 72 similarly at the piston 73a by above-mentioned cylinder 73.In this, in Fig. 8 A, omitted the diagram of release shaft 72.

In structure as shown in Figure 8 A, while upwards pushing away when the cylinder 73 by roller relieving mechanism 70 or by the left side edge portion that action bars 16 can moving plate 55, the center line C4 of can moving plate 55 usining in the clockwise direction swings as center, and is attended by the slide of slide block 54.As a result, upper roll shaft 18 rotations and center line C2 move up (rising), thereby make center line C2 around the circumference rotation of center line C1.In this case, because top roll 9 centers are arranged on center line C2, top roll 9 is also moved upwards up to center line C2, and realizes the releasing operation of the clearance G of temporarily widening each roller 9,10.

Secondly, do not occurring under the normal condition of releasing operation, and when observing from rear, above-mentioned handle 15 rotates in the clockwise direction.As shown in the arrow in Fig. 8 A, handle axle 53 rotations, make center line C4 around the circumference rotation of center line C3.Associated, upper roll shaft 18 rotations, thus center line C2 is around the circumference rotation of center line C1.Can move up by moving plate 55, the while maintains the position of approximate horizontal around center line C2 and C4.

In this case, because top roll 9 is arranged on center line C2 center, top roll 9 is also moved upwards up to center line C2, and the rotation amount of the clearance G of each roller 9,10 and handle 15 correspondingly increases over normal condition.Therefore, for continue operation so that center line C4 centring line C3 directly over, can make handle 15 be rotated in a clockwise direction within the scope of 90 degree from normal condition, and can adjust to increase clearance G.

For example, as aforementioned, when the position of " 1.0 " of scale plate 59 scale alignment indentation 60, under the normal condition that does not have to occur at releasing operation, clearance G is retained as the normal condition of adjusting to 1.0 millimeters.Further, can change this normal condition by pulling back with disengaging configuration alignment pin 56 and following rotating handles 15 in the clockwise direction on handle 15.For example, carry out position change while arranging when the position that position and the handle 15 of the scale on dial 59 " 1.4 " alignment indentation 60 is returned to position alignment pin 56, clearance G will be adjusted to 1.4 millimeters and remain on normal condition.

And, under above-mentioned normal condition, can also realize in the opposite direction similarly the adjustment (adjustment of being undertaken by roller guiding mechanism 50) of clearance G (clearance G during feeder operation).More particularly, when the counter clockwise direction when handle 15 edges are observed is from behind rotated, handle axle 53 and upper roll shaft 18 rotate in the opposite direction.As shown in arrow in Fig. 8 A, can move down (decline) by moving plate 55, the while keeps the position of approximate horizontal around center line C2 and C4.

As a result, top roll 9 is also moved down into center line C2, and the rotation amount of the clearance G of each roller 9,10 and handle 15 correspondingly reduces to surpass normal condition.Therefore, in order to continue operation so that center line C4 centring line C3 under, can make handle 15 from normal condition rotation in the counterclockwise direction within the scope of 90 degree, and can adjust to reduce clearance G.

For example, can change this normal condition by pulling back with disengaging configuration alignment pin 56 and following rotating handles 15 in the counterclockwise direction on handle 15.For example, when the position of the scale on dial 59 " 0.6 " alignment indentation 60, and the position that handle 15 is returned to position alignment pin 56 changes setting, and clearance G will be adjusted to 0.6 millimeter and remain on normal condition.

And about the adjustment of being undertaken by above-mentioned roller position adjusting mechanism 50, as shown in Fig. 8 B and Fig. 8 C, the fulcrum of the releasing operation of the position of center line C4 and roller relieving mechanism 70 correspondingly moves up and down.

More particularly, Fig. 8 B and Fig. 8 C show the adjustment of being undertaken by roller position adjusting mechanism 50, have wherein been provided with the numerical value (state of releasing operation does not occur) of clearance G.First, as shown in Figure 8 B, utilize the strip material of metal sheet, center line C4 declines on the fulcrum of releasing operation.Secondly, as shown in Figure 8 C, utilize the strip material of thick sheet metal, center line C4 rises on the fulcrum of releasing operation.And, from above-mentioned normal condition start by temporarily widen releasing operation that the roller relieving mechanism 70 of clearance G carries out make can moving plate 55 mainly to swing centered by adjusting the position of the center line C4 that above-mentioned roller position adjusting mechanism 50 arranges.

H. effect of the present invention

Based on roll feeder structure of the present invention, can obtain following various effect:

(a) because roll feeder of the present invention has only at each roller 9, supporting member is set a side of 10 and roller 9,10 is arranged on the simpler structure in cantilever shape, and the structure of supporting member is simplified relatively, number of components such as bearing does not increase, and therefore becomes more economical;

(b) each roller 9,10 is arranged on respectively from supporting member and extends on the axle 18,19 of each roller 9,10 inside.And, for covering the lid 11,12 of each roller 9,10, at outer circumferential side, be transparent.In addition, lid 11,12 can be displaced to the open position that exposes each roller 9,10 completely, as shown in Figure 2.For this reason, except observing to a certain extent outside roller 9,10, when lid 11,12 is in an open position, can completely visually check each roller 9,10 when lid 11,12 is in the close position.Especially, because the present invention has as long as lid 11,12 is in an open position or be removed, staff can easily approach the structure of roller 9,10 near zones, can implement like a dream the situation inspection of roller 9,10 or clean;

(c), as above-mentioned, can completely visually check each roller 9,10.Because can directly visually check all roll gaps from the side of roll feeder, for feeder operation or the adjustment that discharges the roll gap G of open amount (clearance G during releasing operation), be exactly being not difficult of task;

(d) because by each roller 9,10 is arranged on to the simpler structure in cantilever shape, alleviated the weight of the parts that lift up and down by releasing operation.Even when completing releasing operation with high speed, can be very not large by the instant impact of the roller directly contacting with strip material, and can not cause the indenture in strip material;

(e) even when roller 9,10 substitutes operation, also can complete this task, and need not dismantle supporting member (framework 13);

(f) because the roll gap G for feeder operation or release open amount (clearance G during releasing operation) adjusts, be being not difficult of task, can be set as required minimum of a value by discharging open amount.For this reason, clamping the just significantly minimizing of indenture causing during strip material.And as a result of this contributes to the speed improvement of releasing operation.

(g) as mentioned before, utilize and be engaged in the rolling bearing (ball bearing 23) between the external peripheral surface of roll shaft 18 and the inner circumferential surface of top roll 9, top roll 9 is mounted to can be rotated freely around upper roll shaft 18.By the relative motion in rolling bearing, in the direction that the center line of top roll 9 tilts at the center line with respect to axle 18 swingable (referring to Fig. 6 B and Fig. 9).For this reason, even wrong or by the reaction force from strip material, caused that the variation etc. of lower shaft 19 makes lower roll 10 from normal position (in this case such as the loading error by due to various materials or processing, for level) low dip slightly, top roll 9 also will be followed this swing.The effect obtaining is the keeping parallelism of aligning respectively that always can make top roll 9 and lower roll 10.In addition in the present invention, each roller 9,10 is bearing in cantilever frame.In conventional structure, due to the variation of roll shaft 18,19 grades, make to locate still less parallel probability relatively high.In addition,, when the location of roller becomes still less parallel, exist strip material can not normally be fed to and just be applied to pressure in strip material by disproportionate and cause the possibility of the indenture, scratch etc. of strip material.On the contrary, in structure of the present invention, top roll 9 as above is swingable to follow lower roll 10.Therefore, owing to the present invention includes each roller, be bearing in the structure in cantilever shape, always can make the posture of each roller remain parallel to each other, and can complete highly reliably normal feeder operation;

(h) during operation, can guarantee safety by lid 11,12 is placed in to closing position.For this reason, such as the operability of the clean grade of above-mentioned roller, can obtain along with being applicable to the security improving considerable improvement.

(i) the main part of roll feeder 8 is equipped with bar 16, mechanically to carry out releasing operation.For this reason, even without the push-botton operation of the control system by placing respectively, cylinder 73 is moved, can carry out releasing operation by manually bar 16 being indexed to more close roller 9,10.Because releasing operation can also manually be carried out near roller 9,10, the operability operating for spiral strip material initially being inserted between roller 9,10 is more effective.Whenever interlocking bar 16 displacements of extrusion press, can complete mechanical releasing operation and further contribute to the improvement aspect the speed of releasing operation.

(j) as previously described,, by unclamping each screw 25,33, can easily dismantle each roller 9,10.On the contrary, by tightening each screw 25,33, each roller 9,10 can be easily installed; And

(k) as previously described, owing to fixing lower roll 10 by trochoidal surface pressure is connected to lower roller shaft 19, for example, with key, fixedly secure lower roller shaft 19, and can when engages axle 19, not produce anyly unclamp, beating etc. (backlash).As a result, the rotation of motor 14 can be sent to lower roll 10 in anodontia unoccupied place, causes accurate and advanced feeder operation (such as position correction precision in SERVO CONTROL etc.).

Although described the present invention with reference to preferred embodiment, it is intended that, and the present invention is not limited to any details of its description, but comprises all embodiment that fall within the scope of appended claims.

Claims (5)

1. a roll feeder, this roll feeder comprises for by clamping and rotating the pair of rolls that strip material realizes strip material feeder operation,

It is characterized in that,

Supporting member, this supporting member is only arranged on a side of each roller, and each roller is mounted to and can rotates freely in this side;

Each roller inside is hollow; And

Each roller is arranged on to form from described supporting member and extends to the axle of each roller inside;

At least one in each roller is mounted to and can on the circumference of described axle, rotates freely, and described axle coordinates with the rolling bearing being positioned between the external peripheral surface of described axle and the inner circumferential surface of described roller;

And by the relative motion of described rolling bearing inside, swingable in the direction that the center line of described roller tilts at the center line with respect to described axle.

2. roll feeder as claimed in claim 1, is characterized in that, described supporting member comprises installs lid pair, and this installation lid is to being displaced to the closing position that covers each roller or the open position that exposes each roller.

3. roll feeder as claimed in claim 1, is characterized in that, described roll feeder further comprises roller position adjusting mechanism, for adjust the gap of each roller during feeder operation.

4. roll feeder as claimed in claim 2, is characterized in that, described roll feeder further comprises roller position adjusting mechanism, for adjust the gap of each roller during feeder operation.

5. the roll feeder as described in any one in claim 1 to 4, it is characterized in that, described roll feeder further comprises exercisable roller relieving mechanism, for carrying out the gap releasing operation wider than the gap during feeder operation provisionally that makes each roller; And

Wherein said roller relieving mechanism comprises bar, by making described bar displacement complete described releasing operation.

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