Summary of the invention
Technical problem to be solved by this invention is to overcome the above-mentioned deficiency of prior art and a kind of large size plastic jetting-moulding device is provided, make it can solve the mould installation difficulty of large size plastic jetting-moulding device in low factory building, mould can hang in machine intimate with lower height level.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
Large size plastic jetting-moulding device, comprise fixed form, moving die plate, pull bar, the mode transfer template, mode transfer template one side is provided with the mode transfer nut, band-type brake mechanism is set on the fixed form, it is characterized in that: the upper connecting rod of described injection machine one side is for can extract pull bar out, the pumping rod oil cylinder is set on the mode transfer template, pumping rod oil cylinder piston bar by the pull bar link with can extract pull bar one end out and fix, described mode transfer nut is divided into two parts: mode transfer nut main body and mode transfer screw gear, the two connects by key, the two also is provided with the mode transfer nut and rotatably compresses mechanism, and it comprises connecting rod, spring, the hold down gag base, compact heap, pitman shaft are connected in nut inside, one end stretches out the nut face, the other end embeds in the compact heap, and compact heap top is by spring compression, and the side is spacing by the compact heap base, compact heap bottom band projection, corresponding with the groove that can pull out pull bar, the band-type brake front shroud of described band-type brake mechanism is provided with the pull bar backstay, and is corresponding with the locating hole that can extract rod head out.
Above-mentioned injection machine just can reach extraction pull bar reduction mould setting height(from bottom) by extracted out the pull bar of upside, its design difficulty is that mainly pull bar extract out to insert repeatable accuracy and pull bar in the folding of the band brake apparatus at fixed form and mode transfer template place, therefore just can realize by above-mentioned design.
Compared with prior art, the invention has the advantages that:
Because a pull bar on injection machine top can be extracted out, can extract a pull bar on top during installation mold earlier out, and make moving platen and fixed form one side have only the pull bar of bottom to stop, can easily mould be hung in thus and install mould between template, good mould back stay to be installed inserts in the fixed form again and fixes, and injection machine just can the normal use as common injection machine, therefore can reduce the requirement to factory building and hanging device, save cost, adapt to installation environment better.
Description of drawings
Fig. 1 is existing large size plastic jetting-moulding device mould scheme of installation.
Fig. 2 is an embodiment of the invention large size plastic jetting-moulding device mould scheme of installation.
Fig. 3 is the front view that embodiment of the invention injection machine pull bar is extracted out.
Fig. 4 is the profile that embodiment of the invention injection machine pull bar is extracted out.
Fig. 5 is an embodiment of the invention injection machine fixed form band-type brake structure enlarged drawing.
Fig. 6 is an embodiment of the invention injection machine mode transfer template band-type brake structure enlarged drawing.
Fig. 7 is an embodiment of the invention injection machine fixed form band-type brake section of structure.
Fig. 8 is an embodiment of the invention injection machine mode transfer template band-type brake section of structure.
Fig. 9 prevents mode transfer nut rotary compacting device figure when being the extraction of embodiment of the invention pull bar.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As Fig. 3, shown in Figure 4, large size plastic jetting-moulding device, comprise fixed form 1, moving die plate 2, pull bar 3, mode transfer template 4, mode transfer template 4 one sides are provided with the mode transfer nut, band-type brake mechanism is set on the fixed form 1, the upper connecting rod of described injection machine one side is for can extract pull bar 37 out, pumping rod oil cylinder 6 is set on the mode transfer template, pumping rod oil cylinder 6 piston rods by pull bar link 5 with can extract pull bar 37 1 ends out and fix, described mode transfer nut is divided into two parts: mode transfer nut main body 32 and mode transfer screw gear 31, and the two connects by key 35, sees Fig. 6, the two also is provided with mode transfer nut hold-down mechanism, prevents that mode transfer nut 32 from can extract on the pull bar 37 rotation out.
Above-mentioned mode transfer nut hold-down mechanism comprises connecting rod 38, spring 39, hold down gag base 40, compact heap 41, pitman shaft is connected in mode transfer nut 32 inside, one end stretches out 32 on nut, the other end embeds in the compact heap 41, compact heap 41 tops are compressed by spring 39, and the side is spacing by compact heap base 40, compact heap 41 bottom band projectioies, corresponding with the groove that can pull out pull bar 37, see Fig. 6, Fig. 9.
Above-mentioned mode transfer nut hold-down mechanism is in order to prevent that mode transfer nut 32 from can extract on the pull bar 37 rotation out, thereby the key 35 when preventing to extract pull bar 37 insertions out on the mode transfer nut 32 misplaces with the keyway on the mode transfer screw gear 31, when mode transfer nut 32 with can extract pull bar 37 out and extract out the time, compact heap 41 is being pressed on the pull bar 37 under the effect of spring 39 in the hold down gag on it, thereby prevents 32 rotations of mode transfer nut.And in the time can extracting pull bar out and be inserted in the mode transfer screw gear 31, an end of connecting rod 38 be subjected to mode transfer screw gear 31 compressing and under contract, the other end drives then that compact heap 41 overcomes spring force and is up, leaves and can extract pull bar 37 out.
As shown in Figure 5, the band-type brake front shroud 20 of described band-type brake mechanism is provided with pull bar backstay 21, and is corresponding with the groove that can extract pull bar 37 heads out, inserts when putting in place when extracting pull bar 37 out, pull bar backstay 21 inserts can extract rod head out, thereby prevents that injection machine from can extract pull bar 37 rotations out when mode transfer.
Above-mentioned rod head is provided with pull bar terminal point machinery locating piece 22, and better Fig. 5 is seen in the insertion position of positioning tie bar.
Above-mentioned pull bar terminal point machinery locating piece 22 is arranged and is convenient to change with extracting pull bar 37 head part out, sees Fig. 5.
The whole erection mold process is as follows:
1, for making things convenient for installation mold, earlier the pull bar of large size plastic jetting-moulding device one side to be extracted out, detailed process is as follows:
Under the effect of fixed form band-type brake oil cylinder 11, left and right sides two halves band-type brake nut 8 and 16 is opened, seen Fig. 7, under the effect of mode transfer template band-type brake oil cylinder 23, spacing 27 and 28 of left and right sides mode transfer is opened and seen Fig. 8.Again from the rodless cavity oil-feed of pumping rod oil cylinder 6, can extract pull bar 37 out by pull bar link 5 extracts out together with mode transfer nut 32, at this moment, injection machine main body one side has only the pull bar 3 of bottom to stop, can easily mould laterally be hung in injection machine inside at lower height.
Can extract rotation on the pull bar 37 out for preventing mode transfer nut 32, cause key 35 on the mode transfer nut 32 and the keyway dislocation on the mode transfer screw gear 31 in the time can extracting pull bar 37 insertions out, on mode transfer nut 32, hold down gag is housed, prevent the rotation of mode transfer nut on the pull bar thereby under the effect of spring 39, compact heap 41 is pressed on, see Fig. 9.
2, install mould after, again pull bar is inserted original position, specific as follows:
Rod chamber oil-feed at pumping rod oil cylinder 6, can extract pull bar 37 out by pull bar link 5 inserts together with mode transfer nut 32, can extract pull bar 37 out by eventually mechanical locating piece 22 is spacing, pull bar backstay 21 inserts can extract pull bar 37 location out, prevent that injection machine from can extract pull bar 37 rotation out when mode transfer, mode transfer nut 32 is connected by key 35 with mode transfer screw gear 31, can rotate together when mode transfer.Under 11 effects of fixed form band-type brake oil cylinder, left and right sides two halves band-type brake nut 8 and 16 is closed a floodgate, under the effect of mode transfer template band-type brake oil cylinder 23, spacing 27 and 28 of left and right sides mode transfer is closed up and blocks the mode transfer nut, mode transfer screw gear 31 is depressed connecting rod 38 1 ends simultaneously, the other end drives to move with pull bar 37 on the compact heap 41 and separates, it is just the same with other three pull bars 3 that can extract pull bar 37 this moment out, all bear 1/4 mold clamping force, equally with common injection machine carry out normal running.
Fig. 2 is seen in the simple signal of above-mentioned installation process.