CN110341147A

CN110341147A - Primary and secondary screw rod injection moulding apparatus

Info

Publication number: CN110341147A
Application number: CN201910660364.5A
Authority: CN
Inventors: 孙志敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2019-10-18

Abstract

The present invention relates to a kind of primary and secondary screw rod injection moulding apparatus, driving mechanism is slidably connected on the base, barrel is fixedly connected on the barrel seat of pedestal, barrel seat is slidably connected on the base, barrel includes preceding barrel and rear barrel, one end of screw rod is inserted into barrel, and its end is removably connected with female screw head, the other end and driving mechanism are sequentially connected, sub- screw head is housed on its female screw head, sub- screw head is matched with the pressurization inner cavity in preceding barrel, or sub- screw head front end is equipped with the sub- screw head of second level, the sub- screw head of second level is matched with the pressurization inner cavity in preceding barrel.The present invention has installed sub- screw head or even the sub- screw head of second level additional on female screw head, high pressure or superelevation injection pressure can be obtained simultaneously in big injection amount, greatly improve product quality, injection volume is improved, is curtailed the feeding hours, production efficiency is improved, reduce the wear intensity of screw cylinder, using electricity wisely, while it being also applied for the especially long plastic product of feed time, save cost.

Description

Primary and secondary screw rod injection moulding apparatus

Technical field

The present invention relates to a kind of injection moulding apparatus more particularly to a kind of primary and secondary screw rod injection moulding apparatus.

Background technique

Traditional injection molding machine is empty due to starting die cavity in injection process, as long as injection pressure is very low, when being injected into Injection pressure needs slowly to increase when 60%-80%, and to very high injection pressure is needed when 3%-10% after again, this last point point is most Hardly possible injection, and here it is being easiest to occur in actual production process to lack material, the stage of the product defects such as contracting wall, and injection molding machine exists It is abut against mold two first after plastics inject die cavity when being injection moulded thick-walled plastic product and local thick-walled plastic product Side first cools and solidifies, then intermediate slowly to cool and solidify again, and since plastic shrink rate is bigger, when cooling during rolling generates powerful Suction, therefore two kinds of results can be generated: a kind of surface dented (referred to as reprinting books in a reduce format) influences appearance, and another kind is that intermediate appearance is empty Hole reduces density strength, and highest injection pressure is constant when traditional injection molding machine is injected, to different plastic raw materials and shape shape Color color plastic product, which can not be accomplished to correspond, meets the needs of every kind of product, so injection molding machine factory connects in every injection molding machine It provides three to four kinds of screw rods of different sizes when being ordered goods to select to user, but quite a few quality and appearance are still not enough managed Think, and injection pressure and injection amount are two very important indexs of injection molding machine, injection pressure is related to product quality, can It makes qualified product to come, injection magnitude relation brings economic benefit to user to great product is capable of processing, if you select Big screw rod injection amount is that greatly, but injection pressure is small, otherwise has selected small screw injection pressure big but injection amount is with regard to small , it is also required in actual use repeatedly debug and can be only achieved preferable using effect, it is cumbersome.And for some modified engineerings Plastics such as nylon adds glass fibre, and it is very big that polystyrene adds these materials of calcium carbonate to wear screw cylinder, sometimes several Month will transducer set screw cylinder, cost very troublesome is also high.Since screw diameter size is relatively difficult to select, user generally can Selection middle size screw rod takes into account both ends, but injection volume will not be very big, and injection pressure will not be very high, to convert product from now on, Can be impacted, it is inconvenient for use.

Summary of the invention

It is an object of the present invention to provide a kind of primary and secondary screw rod injection moulding apparatus, can control again injection while guaranteeing shot Pressure greatly improves finished product rate, and substantially reduces the abrasion to screw cylinder, shortens process time, sometimes may be used Process the product that process on big model injection molding machine originally on the injection molding machine of a small model, save the cost uses It is convenient.

To achieve the goals above, it the technical scheme is that a kind of primary and secondary screw rod injection moulding apparatus, including pedestal, drives Motivation structure, barrel and screw rod, the driving mechanism are slidably connected on the base, and the barrel is fixedly connected on the barrel seat of pedestal On, the barrel seat is slidably connected on the pedestal, and the barrel includes preceding barrel and rear barrel, and the rear barrel is equipped with Feed inlet, on the barrel seat equipped with hopper and the bucket location it is corresponding with the gating location, the one of the screw rod End is inserted into barrel, and its end is removably connected with female screw head, and the other end and driving mechanism are sequentially connected, improve In: sub- screw head is housed on mother's screw head, the sub- screw head is matched with the pressurization inner cavity in the preceding barrel, or The sub- screw head front end is equipped with the sub- screw head of second level, and the pressurization inner cavity in the sub- screw head of second level and the preceding barrel matches It closes.

In the above-mentioned technical solutions, there is backflash on the inner wall of the preceding barrel and/or on the inner wall of rear barrel, And the backflash is in channel form.

In the above-mentioned technical solutions, there is return port on the inner wall of the preceding barrel and/or on the inner wall of rear barrel And its return flow line, and the return flow line is in tunnel-like.

In the above-mentioned technical solutions, on the inner wall of the preceding barrel have backflash, and it is described after barrel inner wall It is upper that there is return port and its return flow line, and the backflash is in channel form, the return flow line is in tunnel-like；Alternatively, described There is return port and its return flow line on the inner wall of preceding barrel, and there is backflash, and institute on the inner wall of the rear barrel Backflash is stated in channel form, the return flow line is in tunnel-like.

In the above-mentioned technical solutions, the sub- screw head is threaded on female screw head, on mother's screw head It is set with female check ring, there is check (non-return) valve in the outside wall surface of the preceding barrel.

In the above-mentioned technical solutions, the driving mechanism includes injection cylinder, oil motor, oil cylinder seat and drive seat, described Drive seat is slidably connected with the pedestal, and the oil motor is fixedly connected in drive seat, and the oil cylinder seat is fixedly connected on material It is mutually integrated on cylinder base or with barrel seat, the outer end of the piston rod of the injection cylinder is fixedly connected with drive seat, the screw rod The other end and the oil motor be sequentially connected.

In the above-mentioned technical solutions, the sub- screw head is threaded on female screw head, on mother's screw head It is set with female check ring, is set with sub- check ring on the sub- screw head.

In the above-mentioned technical solutions, the sub- screw head is threaded on female screw head, on the sub- screw head It is set with sub- check ring, the sub- screw head nose threads are connected with the sub- screw head of second level, are set on the sub- screw head of second level There is second level check ring.

In the above-mentioned technical solutions, female check ring is set on female screw head.

In the above-mentioned technical solutions, the front end periphery of the sub- screw head has pusher spiral shell rib.

The present invention on female screw head due to having installed sub- screw head additional, and the sub- screw head for being located at female screw head front end is used for Final stage increases injection pressure, can obtain high pressure or superelevation injection pressure simultaneously in big injection amount, greatly improve Product quality improves injection volume, shortens charging and process time, improves production efficiency, and using electricity wisely reduces the mill of screw cylinder Damage degree, while it being also applied for the especially long plastic product of feed time, can also make sometimes originally will be on big model injection molding machine The product of processing can be processed on the injection molding machine of a small model, significantly save cost and easy to use.And due to Screw diameter size is relatively difficult to select in the prior art, and user can generally select middle size screw rod to take into account both ends, but inject Amount will not be very big, and injection pressure will not be very high, to convert product from now on, also can be impacted, cumbersome, if using the present invention This can be solved the problems, such as substantially, superelevation injection force can be also obtained when using big screw rod, if injection pressure will adjust also only Before replacing barrel and sub- screw rod and it is more convenient be easy, in the PP(polypropylene relatively good using mobility) the poly- second of PE( Alkene) when injection volume to can be improved 50% even more, and glass fibre, polyphenyl second are added for some modified engineered plastics such as nylon Alkene add these materials of calcium carbonate to screw cylinder wear it is very big, sometimes some months will transducer set screw cylinder, sent out with this Bright that female screw rod is made into special charging plasticized screw, sub- screw rod is made into injection screw, just will be greatly reduced the mill to screw cylinder Damage.

Detailed description of the invention

It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical solution of the present invention It is briefly described, in which:

Fig. 1 is stereoscopic schematic diagram of the invention；

Fig. 2 is main view schematic cross-sectional view of the invention；

Fig. 3 is the perspective view of barrel and screw rod in the present invention；

Fig. 4 is the main view schematic cross-sectional view of barrel and screw rod in the present invention；

Fig. 5 is I enlarged drawing of Fig. 4；

Fig. 6 is the main view schematic cross-sectional view of second of embodiment of barrel and screw rod in the present invention；

Fig. 7 is II enlarged drawing of Fig. 6；

Fig. 8 is the main view schematic cross-sectional view of the third of barrel and screw rod embodiment in the present invention；

Fig. 9 is III enlarged drawing of Fig. 8；

Figure 10 is the enlarged drawing of the 4th kind of embodiment of barrel and screw rod in the present invention；

Figure 11 is the stereoscopic schematic diagram of another seed screw head in the present invention；

Figure 12 is the enlarged drawing of the 5th kind of embodiment of barrel and screw rod in the present invention；

Figure 13 is the enlarged drawing of the 6th kind of embodiment of barrel and screw rod in the present invention；

Figure 14 is the enlarged drawing of the 7th kind of embodiment of barrel and screw rod in the present invention；

Figure 15 is the enlarged drawing of the 8th kind of embodiment of barrel and screw rod in the present invention.

The components in the drawings are labeled as follows: pedestal 100；Barrel seat 110；Driving mechanism 200；Injection cylinder 210；Oily horse Up to 220；Oil cylinder seat 230；Drive seat 240；Barrel 300；Preceding barrel 310；Check (non-return) valve 311；Barrel 320 afterwards；Feed inlet 321；It returns Circulation road 330；Pressurization inner cavity 340；Screw rod 400；Female screw head 410；Female check ring 411；Sub- screw head 420；Sub- check ring 421；Pusher spiral shell rib 422；The sub- screw head 430 of second level；Second level check ring 431；Hopper 500；Mold 600；Shift cylinder 700.

Specific embodiment

Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality Applying example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general Logical technical staff all other embodiment obtained without making creative work belongs to what the present invention protected Range.

Fig. 1~15 are please referred to, the embodiment of the present invention includes:

As shown in Fig. 1~15, a kind of primary and secondary screw rod injection moulding apparatus, including pedestal 100, driving mechanism 200, barrel 300 and screw rod 400, driving mechanism 200 is slidably connected on pedestal 100, and barrel 300 is fixedly connected on the barrel seat 110 of pedestal 100, barrel Seat 110 is slidably connected on pedestal 100, and barrel 300 includes preceding barrel 310 and rear barrel 320, and rear barrel 320 is equipped with charging Mouthfuls 321, the position equipped with hopper 500 and hopper 500 is corresponding with the position of feed inlet 321 on barrel seat 110, screw rod 400 One end is inserted into barrel 300, and its end is removably connected with female screw head 410, and the other end and the transmission of driving mechanism 200 connect It connecing, sub- screw head 420 is housed on female screw head 410, sub- screw head 420 is matched with the pressurization inner cavity 340 in preceding barrel 310, Or sub- 420 front end of screw head is equipped with the sub- screw head 430 of second level, the sub- screw head 430 of second level and the pressurization inner cavity in preceding barrel 310 340 match.

As also shown in e.g. figs. 4-7, there is backflash 330, and backflash 330 is in channel form on the inner wall of rear barrel 320, It can be as shown in Figure 10, there is backflash 330, and backflash 330 is in channel form on the inner wall of preceding barrel 310.Certainly, also It can be on the inner wall of preceding barrel 310 and all have on the inner wall of rear barrel 320 backflash 330, and backflash 330 is in ditch Channel-shaped.

It is of course also possible to be to have return port 331 and its reflux logical on the inner wall of rear barrel 320 as shown in Fig. 8~9 Road 332, and return flow line 332 is in tunnel-like, or conversely, has return port 331 on the inner wall of preceding barrel 310 and its return Circulation road 332, and return flow line 332 is in tunnel-like.It is, of course, also possible to be on the inner wall of preceding barrel 310 and rear barrel 320 Return port 331 and its return flow line 332 are all had on inner wall, and return flow line 332 is in tunnel-like.

It is, of course, also possible to be as shown in figure 12, there is backflash 330, then barrel 320 on the inner wall of preceding barrel 310 Inner wall on have return port 331 and its return flow line 332, and the backflash 330 be in channel form, the return flow line 332 be in tunnel-like；Either conversely, having return port 331 and its reflux logical as shown in figure 13, on the inner wall of preceding barrel 310 Road 332 then has backflash 330 on the inner wall of barrel 320, and the backflash 330 is in channel form, the return flow line 332 be in tunnel-like.

As shown in figs. 6-7, sub- screw head 420 is threaded on female screw head 410, is set with mother on female screw head 410 Check ring 411 has check (non-return) valve 311 in the outside wall surface of preceding barrel 310, since sub- check ring 421 is handling certain plastic raw materials Shi Rongyi degradation, thus use in this case and be not provided with sub- check ring 421 and be arranged in the outside wall surface of preceding barrel 310 and stop Inverse valve 311 is advantageously in product quality.

As shown in Figure 1, 2, driving mechanism 200 includes injection cylinder 210, oil motor 220, oil cylinder seat 230 and drive seat 240, drive seat 240 is slidably connected with pedestal 100, and oil motor 220 is fixedly connected in drive seat 240, and oil cylinder seat 230 is fixed to be connected It connects on barrel seat 110 or is mutually integrated with barrel seat 110, the outer end of the piston rod of injection cylinder 210 and drive seat 240 are fixed Connection, the other end and oil motor 220 of screw rod 400 are sequentially connected.

As shown in Fig. 4,5,8,9, sub- screw head 420 is threaded on female screw head 410, is set on female screw head 410 There is female check ring 411, sub- check ring 421 is set on sub- screw head 420.

As shown in Figure 10, sub- screw head 420 is threaded on female screw head 400, is set with son on sub- screw head 420 and is stopped Inverse ring 421, sub- 420 nose threads of screw head are connected with the sub- screw head 430 of second level, are set with second level on the sub- screw head 430 of second level Check ring 431, at this point, female check ring 411, feed back of being more convenient for can also be set with again on female screw head 400.

As shown in figure 11, the front end periphery of sub- screw head 420 has pusher spiral shell rib 422.

As shown in figure 14, the rear end of preceding barrel 320 has internal diameter augmenting section, naturally it is also possible to be rear material as shown in figure 15 The front end of cylinder 310 has internal diameter augmenting section, and internal diameter increases the natural feed back of energy, plays backflash 330 or return port 331 and its return The effect of circulation road 332, and reduce processing.But material can be saved using backflash 330 or return port 331 and its return flow line 332 Expect and effect is more preferable.

As shown in Fig. 1~2, Shift cylinder 700 is housed between drive seat 240 and the template of mold 600, for filling in this injection molding Prevent it from the template movement of opposing mold 600 fixation of drive seat 240 when setting work, will be driven when this injection moulding apparatus does not work Dynamic seat 240 is released, and injection moulding apparatus is convenient to clean.

As shown in Fig. 2, in the use of the present invention, its drive seat 240 is fixedly connected with the piston outer end of Shift cylinder 700, First feed in hopper 500, then oil motor 200 drives screw rod 400 to rotate, and plastic raw materials enter barrel 300 from hopper 500, 400 turning handle plastics of screw rod, which are pushed ahead, to be plasticized, and female check ring 411 and sub- check ring 421 are pushed to front end by plastics, and from Feeding-passage in female check ring 411 along female screw head 410 reaches the front end of the sub- screw head 420 of 400 front of screw rod, pushes away at this time The oil motor 200 of dynamic screw rod 400 moves backward, fills up corresponding raw material according to the size of product, and charging terminates, and when injecting, The piston advances forward of injection cylinder 210 drives drive seat 240 and screw rod 400 also to travel forward, the mother on female screw head 410 The feeding-passage that sub- check ring 421 on check ring 411 and sub- screw head 420 slides to rear end and is closed on female screw head 410, modeling Material injects mold 600 from the nozzle of preceding barrel 310 under the promotion of screw rod 400, and cavity injection pressure does not have to too high at this time, works as modeling When the full die cavity of the fast punching of material wants pressure maintaining, sub- screw head 420 enters preceding barrel 310 and is moved to backflash in 411 rear end of female check ring simultaneously 330 passway or the aperture of return port 331, plastics are from backflash 330 or return port 331 and its return flow line 332 around mother Check ring 411 arrives its rear end, and the front end of female screw head 410 loses pressure, and sub- screw head 420 and preceding barrel 310 have started at this time Effect, the end area of factor screw head 420 can be made more much smaller than the end area of female screw head 410 (according to practical need Want end area that can accomplish small up to several times, the pressure generated accordingly is also possible to the several of the pressure that female screw head 410 generates Times, general die cavity pressure is 250~300cm2/kg), so to be that high pressure is also possible to super-pressure every square centimeter one for cavity pressure Thousand kilograms or more (can only also arrive 700 kilograms every square centimeter with expensive gas assisted injection equipment highest in traditional method), Flexible modulation injection molding machine computer, which controls final stage injection and second grade packing pressure, the plastic product processed, can accomplish nothing It reprints books in a reduce format, high-quality, high density, high intensity.

The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks Domain is included within the scope of the present invention.

Claims

1. a kind of primary and secondary screw rod injection moulding apparatus, including pedestal (100), driving mechanism (200), barrel (300) and screw rod (400), The driving mechanism (200) is slidably connected on pedestal (100), and the barrel (300) is fixedly connected on the barrel of pedestal (100) On seat (110), the barrel seat (110) is slidably connected on the pedestal (100), and the barrel (300) includes preceding barrel (310) feed inlet (321) are equipped with, hopper is housed on the barrel seat (110) with rear barrel (320), the rear barrel (320) (500) and the position of the hopper (500) is corresponding with the position of the feed inlet (321), and one end of the screw rod (400) is inserted Enter in barrel (300), and its end is removably connected with female screw head (410), the other end and driving mechanism (200) transmission connect Connect, it is characterised in that: sub- screw head (420) are housed on mother screw head (410), the sub- screw head (420) and it is described before Pressurization inner cavity (340) in barrel (310) matches or sub- screw head (420) front end is equipped with the sub- screw head of second level (430), the sub- screw head of the second level (430) is matched with the pressurization inner cavity (340) in the preceding barrel (310).

2. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: the inner wall of the preceding barrel (310) There are backflash (330) on the inner wall of upper and/or rear barrel (320), and the backflash (330) is in channel form.

3. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: the inner wall of the preceding barrel (310) There are return port (331) and its return flow line (332) on the inner wall of upper and/or rear barrel (320), and the return flow line It (332) is in tunnel-like.

4. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: the inner wall of the preceding barrel (310) It is upper that there are backflash (330), and there is return port (331) and its return flow line on the inner wall of the rear barrel (320) (332), and the backflash (330) is in channel form, and the return flow line (332) is in tunnel-like；Alternatively, the preceding barrel (310) there are return port (331) and its return flow line (332) on inner wall, and have on the inner wall of the rear barrel (320) Have backflash (330), and the backflash (330) is in channel form, the return flow line (332) is in tunnel-like.

5. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: sub- screw head (420) screw thread connects It connects on female screw head (410), is set with female check ring (411) on mother's screw head (410), the preceding barrel (310) there are check (non-return) valve (311) in outside wall surface.

6. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: the driving mechanism (200) includes note Penetrate oil cylinder (210), oil motor (220), oil cylinder seat (230) and drive seat (240), the drive seat (240) and the pedestal (100) it is slidably connected, the oil motor (220) is fixedly connected on drive seat (240), and the oil cylinder seat (230) is fixedly connected It is mutually integrated on barrel seat (110) or with barrel seat (110), the outer end of the piston rod of the injection cylinder (210) and driving Seat (240) is fixedly connected, and the other end of the screw rod (400) and the oil motor (220) are sequentially connected.

7. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: sub- screw head (420) screw thread connects It connects on female screw head (410), is set with female check ring (411) on mother's screw head (410), the sub- screw head (420) sub- check ring (421) are set on.

8. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: sub- screw head (420) screw thread connects It connects on female screw head (400), is set with sub- check ring (421) on the sub- screw head (420), the sub- screw head (420) nose threads are connected with the sub- screw head of second level (430), are set with second level check ring on the sub- screw head of second level (430) (431).

9. primary and secondary screw rod injection moulding apparatus according to claim 8, it is characterised in that: be set on mother's screw head (400) There are female check ring (411).

10. primary and secondary screw rod injection moulding apparatus according to claim 1, it is characterised in that: outside the front end of the sub- screw head (420) Week has pusher spiral shell rib (422).