CN1187414A

CN1187414A - Tool for automatically cutting off moulding excess resulting from moulded plastic blanks

Info

Publication number: CN1187414A
Application number: CN97120822A
Authority: CN
Inventors: L·汤姆森
Original assignee: Eccolet Sko AS
Current assignee: Eccolet Sko AS
Priority date: 1996-12-23
Filing date: 1997-12-23
Publication date: 1998-07-15

Abstract

The tool comprises a plate (9), on which a self-centering cutting knife (10) is suspended. A pair of co-acting pulling off rollers (18a, 18b) are provided adjacent the cutting knife (10), said pulling off rollers pulling off the moulding excess, such as fin material, cut off from each blank. The resulting removal of the moulding excess from the plastic blank is more accurate than hitherto known also from blanks with concave surfaces with the result that the surface of the finished blank is provided with a smooth appearance.

Description

A kind of instrument that is used for automatically cutting off moulding excess resulting from moulded plastic blanks

The present invention relates to a kind of instrument, it is used for from the plastic mould pressing blank as directly being embossed in the panel on the nozzle plate, automatically switch the mold pressing fifth wheel,, for example instrument is moved then by an industrial robot by single blank is fixed in the anchor clamps; Perhaps on the contrary, an instrument is fixed in the anchor clamps, makes blank move a segment distance by this robot then.

It is a kind of that to be used for automatically from the machine of the unnecessary mouldings of moulded plastic blanks excision be known, this machine adopt industrial robot make one fast the instrument of the scissors form of running advance.This instrument shows that it can remove unnecessary mouldings, but owing to the unnecessary mouldings that can not remove on the blank concave surface, but also, can not move with satisfactory way so plant machine owing to this excision uneven, the promptly coarse outward appearance that is not that clear-cut cutting stays.

The instrument that the purpose of this invention is to provide a kind of the above-mentioned type, it can remove unnecessary mouldings from the plastics blank by more known instrument more accurately than up to now, and can remove unnecessary mouldings, thereby the outward appearance of polishing is provided for finished blank from the blank of band concave surface.

Instrument of the present invention is characterised in that, it has a platen, and platen is down outstanding to support the cutter instrument of centering voluntarily, also is used for that the unnecessary mouldings as overlap of downcutting from each blank is dragged dragging of removing and removes mechanism in that cutter contiguous place configuration is a pair of, for example, a pair of dragging except that roller.The result be owing to cutter can automatically move to unnecessary mouldings " root " on the blank, and the unnecessary mouldings of burr material one class can promptly be excised from each blank.On the blank surface, do not form any groove, make the blank surface present the outward appearance of complete and smooth therefrom.

Cutter of the present invention are installed on the platen by means of a supporting arm.Supporting arm can move with respect to platen around two axis, and cutter can set an insert that is roughly V-arrangement.The easy travelling performance of supporting arm and the V-arrangement insert of cutter make cutter along the cut direction automatic centering, and this instrument of making is very reliable in operating aspect.The excision of unnecessary mouldings is carried out with the ten minutes accurate way.

And in when beginning cutting, supporting arm of the present invention can be placed to such an extent that be parallel to first and second pneumatic cylinder of platen usually and settle usually perpendicular to third and fourth pneumatic cylinder clamping and control of platen.During cutting is carried out, be placed be parallel to platen first cylinder cutter are pressed to platen, its excess-three cylinder is transfixion then.

According to the present invention, first cylinder can be used for cutter are being pressed and is posted by blank during cutting, consequently since cutter can be moved and can be obtained the cutting surface of polishing to the side slightly.

In addition, when the end was seen, cutter of the present invention can be formed as a square root symbol, a V-arrangement insert can be disposed in V-shape portion part of square root symbol thus.This embodiment of Chan Shenging is proved to be and can produces special benefits therefrom.

According to the present invention, drag to drag except that roller and can dispose surface coarse and/or the worm screw sample, and drag except that roller and rotate with the peripheral speed that is higher than cutter cutting speed three to four-fold except that mechanism coefficient.The result makes cut clout be drawn thinlyyer in very reliable mode, thereby makes it more responsive to the incision effect.That is be to make that to wait to excise clout more responsive to the cutter of cutting these materials.

According to the present invention, an axle of dragging at least except that roller is flexible in addition, and one constitutes this some to joint, makes therefrom to drag except that the distance between the roller and can regulate by being connected in described dragging except that a pneumatic cylinder of the contingency of roller.By this way, dragging the moment of catching unnecessary mouldings except that roller, just can open two in a controlled manner and drag, thereby cutting technique is begun in 10 fens reliable modes except that the gap between the roller.

And, can be on housing a suction funnel that is used to remove the unnecessary mouldings of cutting-out be installed for dragging except that roller according to the present invention, guarantee that therefrom cut unnecessary mouldings is from dragging except that removing fully on the roller.

According to the present invention, drag except that roller and can drive by a gear mechanism, and motor is placed in the contiguous place of gear mechanism by a motor, guarantee that therefrom the technology of removing unnecessary mouldings has good especially controllability energy.

At last,, drag except that roller for two and can be fixed on the platen, allow the installation of dragging simple especially therefrom except that roller with the mode that is roughly parallel to platen according to the present invention.

At length introduce the present invention below in conjunction with accompanying drawing, accompanying drawing is:

Fig. 1 is the side view of instrument one embodiment of the present invention, and dragging on it removed mechanism and removed;

Fig. 2 is a left side view embodiment illustrated in fig. 1, and dragging on it removed mechanism and removed;

Fig. 3 is the top view of instrument shown in Figure 1;

Fig. 4 is a vertical sectional view of dragging except that mechanism and synergy part thereof;

Fig. 5 is the top view of dragging except that mechanism, and a suction funnel also is housed in this mechanism;

Fig. 6 is the side view of cutter;

Fig. 7 is the top view that cutting shown in Figure 6 is cut;

Fig. 8 is the end-view of cutter shown in Figure 6; And

Fig. 9 is the erecting device schematic perspective view of the cutter on the instrument platen.Shown in instrument by up and down the other way around and saved all cylinders.

Instrument shown in Figure 1 is used for from the unnecessary mouldings of the excision of the moulded plastic blanks as molded nozzle plate panel.Panel and/or nozzle plate can be fixed on the unshowned anchor clamps, instrument moves round blank shown in making, and the unnecessary mouldings as molded overlap one class just is removed like this.For example, instrument can move by means of unshowned a kind of operation industrial robot.Robot can be connected in by the dovetails on the instrument 1 and compare instrument.

Instrument has a platen 9, and platen hangs for 9 times and supporting the cutter 10 of centering voluntarily.As schematically indicating like that with digital 18, also as showing among Fig. 4, the removal apparatus of dragging that a pair of acting in conjunction is dragged except that roll form can be placed in contiguous cutter 10 places, drags the unnecessary mouldings of downcutting from each blank except that the roller handle and drags and remove.Unnecessary moulding material is generally overlap.This plastics blank is normally made by polyurethane.

Cutter 10 can be installed on the instrument by supporting arm 12, and supporting arm 12 can promptly rotate perpendicular to the axis 14 of figure paper and the axis 25 that is parallel to the figure paper around two axial lines.As shown in the figure, cutter 10 can dispose a V-arrangement insert 11.

Supporting 14 is configured in one roughly or among the vertical leg piece 15a of L shaped column piece 15.Column piece 15 is placed on the platen 9 with rotary way.On platen 9, its second supporting leg 15b is placed to such an extent that can rotate around axle 25.In the zero hour of the unnecessary mouldings of excision, this supporting arm is by first and second pneumatic cylinder clamping and control.First cylinder indicates with digital 20, and the number 23 of second cylinder in Fig. 3 indicates.These two cylinders are placed roughly parallelly with platen 9.Supporting arm also by respectively with digital 21,22 third and fourth pneumatic cylinder clamping and controls that indicate, this two cylinder is placed to such an extent that be approximately perpendicular to platen 9.During cutting was carried out, first cylinder 20 was pressed to blank by supporting leg 15b with cutter, and at this moment remaining three cylinder is not driven.These three cylinders are driven/do not drive in the correct moment to guarantee three cylinders according to the driver action of accurate adjustment.

As shown in Figure 2, cutter 10 as in shown in Figure 8 when the end is watched, it is made into roughly as the shape of a squared root sign.And a V-arrangement insert 11 is disposed at as shown in Figure 7 V-shape portion part 10 ', 10 of cutter ".As shown in Figure 7, this insert can be rounded.The cutter cutting edge is placed in the insert 11.

Drag dragging of removal apparatus and remove

roller

18a, 18b and can set surface coarse and/or worm, drag except that roller and recommend to rotate relative to the cutting speed 3-4 of blank peripheral speed doubly greater than cutter.

Drag that at least one is flexible among axle 24a, the 24b that removes roller 18a, 18b.In Fig. 4, because the some of star coupling joint 28 formation axle 24a, so an axle 24a is resilient.The result makes to drag except that roller a little elasticity can be arranged during dragging the molded clout that remove to downcut a little.In addition, can be by means of the unshowned pneumatic adjustment cylinder of dragging except that on the roller that is connected in, drag except that the distance between roller 18a, the 18b two and to be adjusted.Thereby make the action of this instrument very flexible.

Fig. 5 shows around dragging a valve jacket 30 except that

roller

18a, 18b be how to dispose the installed part 31 that has installing hole 32.Platen 9 disposes similar hole, makes shell 30 and drag except that roller to be fastened at platen at an easy rate with the such securing member 35 of any bolt.

One suction funnel 31 can be installed on the shell 30, be used to discharge the unnecessary mouldings of downcutting from each blank by cutter 10.

Should be noted that as shown in Figure 4, drag except that

roller

18a, 18b and drive that the gear 26 on the motor drive shaft is connected with

coefficient gear

19b, 19a on spool 24b, the 24a by electronic or air motor 26.Drag and remove

roller

18a, 18b and can on platen 9, be fixed to such an extent that be roughly parallel to this platen.

For simplicity, the application has adopted term " pneumatic cylinder ".These cylinders also can be used hydraulic-driven, perhaps also can replace them to realize linear movement with electronic or thermo-mechanical drive.

Fig. 6,7 and 8 has clearly showed the embodiment of cutter 10 especially.Cutter 10 dispose with holes 30 thin plate 31 as shown in the figure, with so that cutter can be anchored on supporting arm 12 by screw.

The present invention can be with any way change that does not depart from basic principle spirit of the present invention.

Claims

1. one kind is used for from the plastics blank as directly being embossed in the panel on the nozzle plate the instrument of the unnecessary mouldings of excision automatically, single blank is fixed on the anchor clamps for this reason, for example this instrument is moved then with an operation industrial robot, perhaps instrument is fixed on the anchor clamps and moves blank by robot, it is characterized in that, instrument has a platen (9), platen 9 is installed with the cutter of centering (10) voluntarily, and, with for example a pair of coefficient dragging except that such the dragging of roller except that mechanism (18,18a, 18b) be disposed at contiguous described cutter place, drag in order to the unnecessary mouldings of rim charge like flying one class that will downcut from blank and remove.

2. instrument according to claim 1, it is characterized in that cutter (10) are supported on platen (9) by a supporting arm, supporting arm can be around two axial lines (14 with respect to platen (9), 15) insert that is roughly V-arrangement is also disposed in motion, and cutter (10).

3. instrument as claimed in claim 1 or 2, it is characterized in that, supporting arm (12) is in cutting zero hour, by being placed to such an extent that be roughly parallel to first and second pneumatic cylinder (20,23) of platen (9) and being placed to such an extent that be approximately perpendicular to third and fourth cylinder (21,22) clamping/control of platen (9).

4. as instrument as described in claim 1-3 one or more, it is characterized in that during cutting, first pneumatic cylinder (20) is used for cutter (10) are pressed to blank.

5. as instrument as described in claim 1-4 one or more, it is characterized in that cutter are shaped as same square root symbol when the end is seen, and a V-arrangement insert is disposed on its V-shape portion part.

6. as one or more instrument of claim 1-5, it is characterized in that, drag remove mechanism coefficient and drag except that roller (18a, 18b) and dispose surface coarse and/or the worm screw sample, drag except that roller and recommend to rotate than the big 3-4 of cutter (10) cutting speed peripheral speed doubly.

7. as instrument as described in claim 1-6 one or more, it is characterized in that, drag except that in the axle (24a, 24b) of roller (18a, 18b) at least one be flexible, a star coupling joint (28) constitutes this some; And drag except that the distance between the roller and can adjust by being connected in a pneumatic cylinder of dragging except that on one of roller.

8. as instrument as described in claim 1-7 one or more, it is characterized in that, a suction funnel is installed on the shell of dragging except that roller (18a, 18b) (30), remove in order to the unnecessary mouldings that will downcut.

9. as instrument as described in claim 1-8 one or more, it is characterized in that, drag except that roller (18a, 18b) by a gear mechanism (19a, 19b, 27), drive by a motor 26, motor 26 places the contiguous place of gear mechanism.

10. as instrument as described in claim 1-9 one or more, it is characterized in that, drag except that roller (18a, 18b) for two and be fixed on the platen (9) in mode with platen (9) almost parallel.