CN201296028Y

CN201296028Y - Die set monitoring device

Info

Publication number: CN201296028Y
Application number: CNU2008201138127U
Authority: CN
Inventors: 宇田昌夫; 饭田正彦
Original assignee: Ushio Denki KK
Current assignee: Ushio Denki KK
Priority date: 2007-07-02
Filing date: 2008-07-02
Publication date: 2009-08-26
Anticipated expiration: 2018-07-02
Also published as: KR100961339B1; TWI389791B; CN101337424A; CN101337424B; KR20090004467A; JP4448869B2; TW200911506A; JP2009012214A

Abstract

The utility model provides a die set monitoring device which can easily find out the causes of abnormity and can make an injection molding machine operate with high production capacity. The die set monitoring device comprises a monitoring video camera and a monitoring device body, wherein, the monitoring video camera monitors the state that formed products forming materials are filled in a die cavity formed by assembling a movable die set and a fixed die set, and the state of the die set surface of the movable die set of the injection molding machine for shaping formed products. The monitoring device body is used for comparing the reference image data of the die set surface of the movable die set, and the monitoring image data of the die set surface of the movable die set; the reference image data is recorded in advance and the monitoring image data is obtained in the forming processing process. Thereby, the generation of abnormities can be monitored; when the forming processing is performed each time, the order monitoring image data in time sequence is orderly updated and the latest monitoring image data is recorded at the same time.

Description

Mold monitoring device

Technical field

The present invention relates to mold monitoring device, monitor the state of the die face of mould in the injector, for example prevent under formed products remains in the state of die face of mould, still to carry out matched moulds, or take place at formed products that still proceeding under the bad state is shaped handles.

Background technology

So far; possessing the fixed mould and the moveable die of male and female relation each other; in the injector of making resin forming product; for example under the state of residual formed products on the moveable die with the words of two mould matched moulds; mould itself can damage; therefore problems such as manufacturing line stops for a long time can taking place; therefore the state that needs the die face of supervision moveable die; for example motion a kind of mold monitoring device; constitute: be in the die sinking fixed surveillance video camera on the position of die face of moveable die of position that finishes can taking from preposition and direction; according to the view data that is obtained by this monitoring camera, the state that monitors the forming face of moveable die is (for example with reference to Japanese documentation 1; patent documentation 2).

In such mold monitoring device, comprising matched moulds, potting resin material, cooling curing, die sinking and ejecting in the process that a series of shapings of formed products handle, for example obtain die face at moveable die keeping formed products state view data promptly monitoring picture data and formed products to keep the view data of the state of emaciated face mould from formed products be secondary monitoring picture data, with benchmark image data under each state promptly benchmark image data and secondary benchmark view data compare, monitor to have or not the relevant unusual generation that is shaped.

Fig. 5 is the block diagram of structure of the monitoring arrangement main body of a summary example of representing the existing mold monitoring arrangement.

Monitoring arrangement main body 50 in this mold monitoring device possesses: the reference picture store 51A and the 51B that can write down with rewriteeing, preserve benchmark image data and secondary benchmark view data; Writing down the monitoring picture data obtaining by monitoring camera 60 and the monitoring picture memory 52A and the 52B of secondary monitoring picture data; Benchmark image data of comparison and monitoring picture data are judged the consistent degree of two view data, and relatively secondary benchmark view data and secondary monitoring picture data are judged the control part 55 of function of the consistent degree of two view data with having.In with figure; the 56th, for example according to the die sinking signal that sends by injector or eject and finish signal etc.; I/O module to control part 55 output running command signals; the 57th, will for example be converted to data signal (A/D value) by monitoring camera 60, and be input to the A/D modular converter of control part 55 as the view data of analog signal output.

In this mold monitoring device, promptly obtain the monitoring picture data whenever forming processing, relevant data are handled in the shaping before writing down in the monitoring picture memory, are updated and are recorded as up-to-date shaping and handle relevant monitoring picture data.

Confirming that the benchmark image data are under the roughly consistent situation of two images with the result who compares to determine of monitoring picture data, judge that formed products does not remain in the fixed mould, be maintained in the moveable die, advance to formed products and eject operation, or judge that formed products is ejected by the die face from moveable die well, carry out next and be shaped and handle (matched moulds operation).

On the other hand; in the result who compares to determine who confirms benchmark image data and monitoring picture data is under the inconsistent situation of two images; part or all of judgement formed products remains in fixed mould; or judge that formed products is bad; or do not eject and well carry out; formed products remains in moveable die, and injector just is stopped.

No. 3875486 communique of patent documentation 1 Japan Patent

Patent documentation 2 TOHKEMY 2002-11772 communiques

Summary of the invention

Yet, in aforesaid existing mold monitoring arrangement, as mentioned above; detecting under the unusual situation of the generation that is shaped, stop injector, that is stop forming operation; for example remove formed products that remains in fixed mould or moveable die etc., take temporary disposal, begin forming operation again.

But in this treating method, be difficult to find out the main cause of unusual generation, owing to do not finish improvement in essence; still proceed forming operation; therefore have when generation is unusual, promptly stop forming operation continually, the problem that the injector output is descended.

The present invention is based on the invention that above situation is finished; its purpose is to provide a kind of and can takes place in the process that a series of shaping is handled under the unusual situation; find out its main cause easy as can, thereby make injector have the mold monitoring device of high-throughput ground running.

Mold monitoring device of the present invention, it is characterized in that, have: monitoring camera, supervision has the state of die face of above-mentioned moveable die of the injector of moveable die and fixed mould, above-mentioned injector is filled formed products and is formed material in by the die cavity that above-mentioned moveable die and said fixing mould matched moulds are formed, formed products is shaped; With

The monitoring arrangement main body, record is preserved formed products and is remained on benchmark image data of state of die face of above-mentioned moveable die and the formed products secondary benchmark view data from the state of the die face demoulding of moveable die in advance, by monitoring that once action and secondary monitor action, supervision forms in the process of processing no abnormal generation, wherein, the monitoring picture data and the above-mentioned benchmark image data of state that the above-mentioned formed products that monitors that once action will be obtained by this monitoring camera in forming the process of processing remains on the die face of moveable die compare, confirm the difference of two view data, above-mentioned secondary monitors that action compares secondary monitoring picture data and the above-mentioned secondary benchmark view data of formed products from the state of the die face demoulding of moveable die, confirm the difference of two view data

When forming processing at every turn, will be on time sequencing old shaping is handled relevant monitoring picture data and secondary monitoring picture data and is upgraded successively and be recorded as up-to-date shaping simultaneously and handle relevant monitoring picture data and secondary monitoring picture data, to obtain preserving up-to-date shaping is handled and this shapings shaping before handling is handled the monitoring picture data that at least twice shaping handles is correlated with and the state of secondary monitoring picture data.

And, in mold monitoring device of the present invention, preferably has following formation: can be provided with external memory storage with freely loading and unloading, when confirming in the either party of above-mentioned once supervision action and secondary supervision action, abnormality to take place, the monitoring picture data that are recorded in the monitoring arrangement main body are sent to this external memory storage also preserve.

According to mold monitoring device of the present invention; by following formation: old shaping is handled relevant monitoring picture data and is updated successively and preserves into up-to-date shaping and handle relevant monitoring picture data on the time sequencing; so that taking place, unusual shaping handles relevant monitoring picture data; the shaping that should be shaped at least before handling is handled relevant monitoring picture data all the time as the record information record; come relatively to contrast to take place the shaping processing relevant monitoring picture data of unusual shaping before handling relevant monitoring picture data and taking place when unusual thus; thereby unusual omen takes place in identification; consequently can find out unusual occurrence cause easy as can; thereby can take adequate measure apace at unusual occurrence cause, make the running of injector high-throughput ground.

And; can connect the external memory storage that is used for transmitting and preserve as the monitoring picture data of the record information that is recorded in the monitoring arrangement main body because constitute; only take out external memory storage from the monitoring arrangement main body thus; for example resolve the computer of usefulness by being connected to data; just can come and carry out the parsing of monitoring picture data simultaneously, so can when the output that prevents injector descends, find out abnormal cause with the forming operation difference.

Description of drawings

Fig. 1 is the key diagram of summary of structure of major part of an example that the injector of mold monitoring device of the present invention is installed with the STA representation of opening two moulds.

Fig. 2 is the block diagram of structure of the monitoring arrangement main body of a summary example of representing relevant mold monitoring device of the present invention.

Fig. 3 is the flow chart that is used for illustrating the running of mold monitoring device of the present invention.

Fig. 4 is the block diagram of structure of other examples of the summary monitoring arrangement main body of representing relevant mold monitoring device of the present invention.

Fig. 5 is the block diagram of structure of the monitoring arrangement main body of a summary example of representing existing mold monitoring device.

The specific embodiment

Fig. 1 is the key diagram of summary of structure of major part of an example that the injector of mold monitoring device of the present invention is installed with the STA representation of opening two moulds, and Fig. 2 is the block diagram of structure of the monitoring arrangement main body of a summary example of representing relevant mold monitoring device of the present invention.

This injector possesses: the fixed mould 11 that is fixed in resting barrel (platen) 10; And be fixed on by connecting rod 15 and resting barrel 10 bindings, moveable die 21 on the movable cylin-der 20 that can freely be provided with respect to fixed mould 11 comprises that the injection equipment that is used for to the nozzle 13 by becoming the resin material that filling is fused in the die cavity (be shaped and use the space) that matched moulds state (state that moveable die 21 relative fixed moulds 11 fit tightly) forms is located on the resting barrel 10 with advancing and retreat, and moveable die 21 moves to the direction of leaving fixed mould 11, thereby pin member 23 pushing ejection parts 24 make formed products be located on the movable cylin-der 20 from the ejecting mechanism of the die face 21A demoulding of moveable die 21.

Mold monitoring device of the present invention possesses: shooting is as the state of the die face 21A of the moveable die 21 of the face of supervision, in order to the monitoring camera 25 of obtaining view data; And according to the monitoring picture data that obtain by monitoring camera 25; monitor the state of the die face 21A of moveable die 21; and has a monitoring arrangement main body 30 of the display unit 31 that shows acquired view data; in injector; comprising the matched moulds operation; potting resin material operation; the cooling curing operation; die sinking operation and formed products eject operation in the process that interior a series of shapings are handled; for example obtain the i.e. monitoring picture data of view data that keeping the state of formed products at the die face 21A of moveable die 21; and formed products is secondary monitoring picture data from the view data of the state of the die face 21A demoulding of moveable die 21; keeping benchmark image data of state of formed products and formed products to compare with the die face 21A that obtains in advance it, monitoring to have or not the relevant unusual generation that is shaped from the secondary monitoring picture data of the state of the die face 21A demoulding of moveable die 21 at moveable die 21.

At this, benchmark image data are actually by from handling by repeating a series of shapings that damaged or the state that breaks etc. do not take place selected for example formed products obtained a plurality of view data view data obtains.

And, secondary benchmark view data similarly, the view data of not adhering to the state of formed products (resin material) with the die face 21A of selected moveable die 21 from a plurality of view data obtains.

Monitoring arrangement main body 30 possesses: the reference picture store zone 35 with reference picture store 35A, the 35B that can write down benchmark image data and secondary benchmark view data with rewriteeing; Writing down the monitoring picture memory area that relevant monitoring picture data and secondary monitoring picture data are handled in once shaping; Have the benchmark image of reading data and monitoring picture data, carry out the whether control part 32 of the consistent function that compares to determine of two view data; The die sinking signal that sends according to the command signal that sends by display unit 31 and by injector or eject and finish signal etc.; control part 32 is exported the I/O module 34 of running command signals and will for example be converted to data signal (A/D value) as the view data of analog signal output from monitoring camera 25, be input to the A/D modular converter 33 of control part 32.

Monitoring arrangement main body 30 among this embodiment, for example have three monitoring

picture memory areas

40,41,42, will comprise the relevant monitoring picture data of up-to-date shaping processing and handle relevant monitoring picture data as the record information record in interior continuous three times shaping.

Promptly, writing down respectively in three monitoring

picture memory areas

40,41,42 is shaped the preceding handles under the state of relevant monitoring picture data, under the situation that forms processing again, the oldest relevant monitoring picture data of shaping processing are updated successively and are recorded as the up-to-date relevant monitoring picture data of shaping processing on the time sequencing.

Specify the update method of monitoring picture data, when obtaining the N time shaping and handling relevant up-to-date monitoring picture data and secondary monitoring picture data, elimination is recorded in the oldest (N-3) inferior shaping on monitoring picture memory 42A of the 3rd monitoring picture memory area 42 and the time sequencing among the secondary monitoring picture memory 42B and handles relevant monitoring picture data and secondary monitoring picture data, handle relevant monitoring picture data and secondary monitoring picture data with being recorded in monitoring picture memory 41A of the 2nd monitoring picture memory area 41 and (N-2) among the secondary monitoring picture memory 41B inferior shaping, be sent to the monitoring picture memory 42A and the secondary monitoring picture memory 42B of the 3rd monitoring picture memory area 42, and will be recorded in monitoring picture memory 40A of the 1st monitoring picture memory area 40 and (N-1) among the secondary monitoring picture memory 40B inferior shaping and handle relevant monitoring picture data and secondary monitoring picture data, be sent to the monitoring picture memory 41A and the secondary monitoring picture memory 41B of the 2nd monitoring picture memory area 41, relevant up-to-date monitoring picture data and secondary monitoring picture data are handled in the N time shaping, be recorded in the monitoring picture memory 40A and the secondary monitoring picture memory 40B of the 1st monitoring picture memory area 40 respectively.

Display unit 31 has the contact panel (not shown) that shows the icon of selecting setting pattern and monitoring mode, have and to output to the function of control part 32 corresponding to the running command signal of selected operation mode, wherein above-mentioned setting pattern is used to obtain benchmark image data and secondary benchmark view data, with its record, be kept at the setting action of the reference picture store 35A and the secondary reference picture store 35B in reference picture store zone 35, above-mentioned control model is used for comparing each benchmark image data of preserving in advance and each the monitoring picture data that obtains in the process of carrying out a series of shaping processing, the supervision action of the state of the die face 21A of supervision moveable die 21.

The setting pattern also can be used for and will be kept at the data conditions of each the benchmark image Data Update Cheng Xin in the reference picture store zone 35 except being used in the situation that obtains and preserve benchmark image data and secondary benchmark view data.

Hereinafter, illustrate that with reference to Fig. 3 above-mentioned mold monitoring device monitors the method for state of the die face 21A of moveable die 21.

At first; on the contact panel of display unit 31, select setting pattern (judging part (a) at Fig. 3 is a "No"); corresponding to needs; after elimination has been recorded in each benchmark image data in reference picture store zone 35; begin forming process (filling work procedure of matched moulds operation, resin material, cooling curing operation) at injector; when forming process was finished, moveable die 21 relative fixed moulds 11 moved to the direction of leaving, and become die opening state.

And, confirm that moveable die 21 is in the state (judging part (b) at Fig. 3 is "Yes") that is positioned at predetermined monitored position, take the state of the die face 21A of the moveable die 21 that is keeping formed products by monitoring camera 25, obtain the benchmark image data thus one time, be recorded among reference picture store 35A.

Secondly; in injector, eject (ejection) operation; confirm the die face 21A demoulding (judging part (c) at Fig. 3 be "Yes") of formed products from moveable die 21; take the state of the die face 21A of moveable die 21 by monitoring camera 25; obtain secondary benchmark view data thus, be recorded in secondary reference picture store 35B.

And, repeat this processing corresponding to needs, preserve and be judged as each best benchmark image data.

On the other hand; under the state of obtaining each benchmark image data; when the contact panel of display unit 31 is selected monitoring mode (judging part (a) at Fig. 3 is a "Yes"); in injector, begin forming process (filling of resin material, cooling curing); when forming process is finished; moveable die 21 relative fixed moulds 11 move to the direction of leaving, and become die opening state.

And, confirm that moveable die 21 is in the state (judging part (d) at Fig. 3 is "Yes") that is positioned at predetermined monitored position, take the state of the die face 21A of the moveable die 21 that maintains formed products by monitoring camera 25, obtain the monitoring picture data thus one time, be recorded in the monitoring picture memory one time.At this, handle by carrying out a series of shaping, be recorded in the monitoring picture data under the situation of each monitoring

picture memory area

40,41,42, as mentioned above, eliminate shaping the oldest on the time sequencing and handle relevant monitoring picture data, upgrade being recorded as up-to-date relevant monitoring picture data of shaping processing.

Monitoring picture data and benchmark image data of so relatively obtaining are judged the whether once supervision running of consistent (the consistent degree of two images) of benchmark image data and monitoring picture data.

When being judged as monitoring picture data, make the eject operation of formed products from the die face 21A demoulding of moveable die 21 with benchmark image data in fact consistent (judging part (e) at Fig. 3 is "Yes").At this, " in fact consistent " be meant, for the output that prevents injector descends, judging that acquired formed products is that the no problem actually range content of judgment standard of good merchantable brand or defective products is permitted to set under the state of error to a certain degree.

On the other hand, when judging monitoring picture data and benchmark image data inconsistent (judging part (e) at Fig. 3 is a "No"), judging is shaped handles and takes place unusually, gives the alarm, and can say so and stop injector forcibly.In addition, at judging that the processing that is shaped unusual state takes place narrates hereinafter.

After monitoring that once judgement shaping processing is normally carried out in the running; in injector, eject operation; confirm the die face 21A demoulding (judging part (f) at Fig. 3 be "Yes") of formed products from moveable die 21; take the state of the die face 21A of moveable die 21 by monitoring camera 25; obtain secondary monitoring picture data thus, be recorded in and writing down the secondary monitoring picture memory that the monitoring picture memory area of relevant monitoring picture data is handled in this shaping.

Secondary monitoring picture data that obtain more like this and secondary benchmark view data, judge secondary benchmark view data and secondary monitoring picture data whether the secondary of consistent (the consistent degree of two images) monitor running.

When judging secondary monitoring picture data in fact consistent with secondary benchmark view data (judging part (g) at Fig. 3 is a "Yes"); implement next processing that is shaped; on the other hand; judge secondary monitoring picture data and secondary benchmark view data in fact inconsistent (judging part (g) at Fig. 3 is a "No"); promptly judging is shaped handles generation unusually; give the alarm, and can say so and stop injector forcibly.

Hereinbefore, be benchmark image data and monitoring picture data and inconsistent as the result of the comparison judgment processing of two view data of carrying out benchmark image data and monitoring picture data, promptly judging is shaped handles unusual example takes place, and for example has:

(1) after the affirmation die sinking, formed products adheres to, remains on the die face 11A of fixed mould 11, and formed products does not adhere to the situation of the die face 21A that remains on moveable die 21,

(2) though confirm to have carried out formed products eject running after, formed products is from the die face 21A demoulding of moveable die 21 and remaining situation,

(3) confirm that formed products does not form the situation of desirable shape etc.

The main cause of the generation of " unusually " that is stopped as this injector; for example think to constitute the problem of structure (shape or material etc.) itself of member of formation of mould and other injector or the distortion of member of formation; damaged; perhaps (A) shaping powder (resin material) of producing in before shaping is handled remains under state mould in and carries out next processing that is shaped; thereby should the shaping powder stick die face 21A at moveable die 21; can say so and play the function of solid; formed products remains in the die face 21A of moveable die 21, and the amount that (B) is filled in the resin material in the die cavity is not the various main causes of suitable amount or the like.

Perhaps, according to above-mentioned mold monitoring device, handle relevant monitoring picture data and begin to be updated successively preservation by constituting shaping old on the time sequencing, to obtain comprising that unusual shaping takes place handles the state that the three times continuous relevant monitoring picture data of shaping processing of relevant monitoring picture data write down as record information all the time, relatively unusual shaping takes place and handles relevant monitoring picture data and more handle relevant monitoring picture data by the shaping of face with than unusual the generation time in contrast thus, unusual omen takes place in identification, in other words, each the monitoring picture data that is recorded in monitoring arrangement main body 30 can be used for finding out of abnormal cause.

Specifically, for example relatively the unusual relevant monitoring picture data of shaping processing take place in contrast, before shaping handle relevant monitoring picture data and again before shaping handle relevant monitoring picture data, thus, for example can be identified in and take place in the relevant secondary monitoring picture data of unusual shaping processing shaping processing before, on the die face 21A of moveable die 21, there is the shaping powder, perhaps in monitoring picture data, the differences such as change of shape that the variation of the loading of generation resin material causes, its result can find out unusual generation main cause easy as can.

In the present invention, relevant monitoring picture data are handled in the shaping processing shaping before that constitutes when writing down unusual the generation at least, can expect to obtain practical enough effects that, as described in above-mentioned embodiment, handle relevant monitoring picture data by the shaping that constitutes three times and be recorded, can find out unusual occurrence cause with the higher degree of accuracy thus as record information.

Thereby, can take suitable disposal apace at unusual occurrence cause, make the running of injector high-throughput ground.

More than, be illustrated at example of the present invention, but the present invention is not limited to above-mentioned embodiment, can apply various changes.

For example, as shown in Figure 4, monitoring arrangement main body 30 can be provided with external memory storage 45 with freely loading and unloading relatively, shown in the flow chart as shown in Figure 3, the either party who constitutes in confirming once supervision running and secondary supervision running is taken place under the unusual situation, each that is recorded in monitoring arrangement main body 30 be shaped to be handled monitoring picture data in the relevant monitoring

picture memory area

40,41,42 (monitoring picture data and secondary monitoring picture data), can transmit and be kept at external memory storage 45.

Mold monitoring device according to this structure; only take out external memory storage 45 by monitoring arrangement main body 30; be connected to for example computer of data parsing usefulness; just can make a distinction the parsing (finding out of abnormal cause) of side by side carrying out the monitoring picture data thus, can when the output that prevents injector descends, find out abnormal cause with forming operation.

And, in mold monitoring device of the present invention, do not limit the quantity of monitoring picture memory area especially.

And then, by the unusual generation main cause that a plurality of monitoring picture data that relatively write down as record information are discerned, be not limited to the reason of the above-mentioned demonstration of giving an example.

Claims

1. mold monitoring device has moveable die (21), fixed mould (11), monitors the monitoring camera (25) and the monitoring arrangement main body (30) of state of the die face of moveable die, and above-mentioned mold monitoring device is characterised in that,

Above-mentioned monitoring arrangement main body (30) has:

A reference picture store (35A), the benchmark image data that formed products remains on the state on the die face of moveable die preserved in record in advance;

Secondary reference picture store (35B), the secondary benchmark view data of formed products from the state of the die face demoulding of moveable die preserved in record in advance;

A monitoring picture memory, the record formed products remains on monitoring picture data of the state on the die face of moveable die, the data that at least twice the shaping that the data that this up-to-date shaping of monitoring picture memory record is handled and this are shaped that shaping before handling handles is handled;

Secondary monitoring picture memory, the record formed products is from the secondary monitoring picture data of the state of the die face demoulding of moveable die, and the up-to-date shaping of secondary monitoring picture memory record is handled and this shaping before handling of being shaped is handled, and relevant data are handled at least twice shaping; And

Control part (32), more above-mentioned benchmark image data and above-mentioned monitoring picture data, and more above-mentioned secondary benchmark view data and above-mentioned secondary monitoring picture data.

2. mold monitoring device according to claim 1 is characterized in that,

Have external memory storage (45), when producing abnormality, preserve above-mentioned monitoring picture data.