CN204566596U - For barrel before the injection piston of plastics extruding machine and the injection that is mated - Google Patents

For barrel before the injection piston of plastics extruding machine and the injection that is mated Download PDF

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Publication number
CN204566596U
CN204566596U CN201420799660.6U CN201420799660U CN204566596U CN 204566596 U CN204566596 U CN 204566596U CN 201420799660 U CN201420799660 U CN 201420799660U CN 204566596 U CN204566596 U CN 204566596U
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China
Prior art keywords
injection
cylinder
runner
piston
injection piston
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CN201420799660.6U
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Chinese (zh)
Inventor
周宏伟
罗居红
李立峰
沈海波
魏建鸿
陆晨风
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TEDERIC MACHINERY CO Ltd
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TEDERIC MACHINERY CO Ltd
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Abstract

The utility model relates to barrel before a kind of injection piston for plastics extruding machine and the injection that is mated.Described injection piston, arranges between injection head and main body and expects step clearly, and clear material step is formed by connecting by the second cylinder and the second round platform, and the other end of the second cylinder is connected with at the bottom of the round platform of injection head, and the other end of the second round platform is connected with main body.Before described injection, barrel has with the injection head of described injection piston and expects the inner chamber wall that step outline matches clearly.Before injection, barrel and injection piston are that this device of matched in clearance makes its plastics extruding facility of assembling have to expect function clearly, can realize the cleaning of injecting front barrel, injection piston end defective material.

Description

For barrel before the injection piston of plastics extruding machine and the injection that is mated
Technical field
The utility model relates to a kind of plastic shaping thermomechanical components, particularly barrel before a kind of injection piston for plastics extruding machine and the injection that is mated.
Background technology
Plastics extruding machine is a kind of novel plastic-injection moulding machine, and traditional plastic-injection moulding machine only has a screw rod, has both played storing function, and has played function of injection again.Its shortcoming is that disposable injection volume can not be too large, and in screw retreats, its effective thread reduces and affects plasticizing quality.At present, the domestic mold clamping force of China is the reciprocating plastic-injection moulding machine of this singe screw of 40000KN, and its disposable theoretical volumetric injection is 62000cm3.And the mold clamping force that Tairui Machine Co., Ltd. manufactures is the TRX-J plastics extruding machine of 40000KN, its disposable theoretical volumetric injection can reach 226000cm 3, be 3.6 times of normal injection machine, for especially big heavy thick plastic product manufacture provides equipment, be the innovation of a plastics equipment, be widely used in the production of the product such as large-size pipe, large-scale inspection shaft at present.
Application number is 201210433567.9, the Chinese utility model patent of applying date 2012-10-25 application discloses that an a kind of note bimodulus plastics extruding machine, comprise injection fuselage, matched moulds fuselage, squeezing equipment and clamping device, described squeezing equipment is arranged on it injector, clamping device is fixed on it clapper die spotting press, described injector is provided with dovetail groove guide rail with it, described clamping device is two covers, described squeezing equipment comprise whole enter base, traversing slide, whole oil-feed cylinder, injecting assembly and plasticizing assembly, described whole enter base bottom be provided with dovetail groove and be linked on dovetail groove guide rail, top is provided with horizontal guide pillar, described traversing slide be provided with fairlead be linked in whole enter base horizontal guide pillar on, described injecting assembly and plasticizing assembly are arranged on traversing slide, one end of whole oil-feed cylinder be fixed on whole enter on base, the other end is fixed on clamping device.This utility model utilized within the cool time of first set mould, produced, saved energy ezpenditure, improve production efficiency to the second mold, and the product weight of two molds can be different.But the injecting assembly of this utility model, especially barrel, the easy buildup in injection piston end before injection, not easy-clear.This technological deficiency is extensively present in current existing various plastics extruding machine.
Summary of the invention
The utility model provides a kind of injection piston for plastics extruding machine, and this device makes its plastics extruding facility of assembling have to expect function clearly, can realize the cleaning of injecting front barrel, injection piston end defective material.
Barrel before the injection that the utility model also provides a kind of and described injection piston to coordinate.
The utility model solves the technical scheme that its technical problem adopts:
A kind of injection piston for plastics extruding machine, the main body of described injection piston is cylinder, it has one in round table-like injection head, arrange between injection head and main body and expect step clearly, clear material step is formed by connecting by the second cylinder and the second round platform, the other end of the second cylinder is connected with at the bottom of the round platform of injection head, and the other end of the second round platform is connected with main body.
As preferably, described injection head, clear material step and main body are the rotary bodies with same axle center.
As preferably, the main body of described injection piston is arranged the runner being communicated to center, injection head outer face from body outer wall face.This runner is used for the high pressure defective material in storage compartment to derive, and is the passage being communicated with storage compartment and plunger centre bore.
As preferably, the main body of described injection piston with expect one end radial direction that step connects is distributed with several face of cylinder runners clearly.Further, each face of cylinder runner is in the same plane, the center of flow passage body outer wall face, the face of cylinder and this plane.As preferably, in injection head, be provided with the runner arranged along axle center, one end of runner and the inner space of the front barrel of injection, the other end of runner and described face of cylinder flow passage.Face of cylinder runner is connected with the runner of injection head, the buildup in body outer wall face can be flowed out through the inside of injection piston, from the free end of injection head, achieve the clear material function at injection piston outside wall surface dead angle.
As preferably, before the runner on injection head and injection, the little horn mouth of outer imperial palace is arranged in one end of the inner space of barrel.Horn mouth is conducive to the outflow of melt, reduces flow resistance.
As preferably, the external port of each face of cylinder runner is runner hole, and runner hole is little horn-like of outer imperial palace.
For a barrel before the injection of plastics extruding machine, before described injection, barrel has with the injection head of described injection piston and expects the inner chamber wall that step outline matches clearly.Before injection, barrel and injection piston are matched in clearance.
A kind of plastics extruding machine, it has barrel before described injection piston and described injection.
The beneficial effects of the utility model are: the utility model comprises two and carried out the parts of particular design---barrel and injection piston before injection, compact conformation after the transformation of these two parts, rationally, the injecting assembly of plastics extruding machine is had and expects function clearly, scavenging period and cleaning raw material can be saved, greatly saved cleaning cost, thus the plastics extruding machine in industry that solves is difficult to a difficult problem for cleaning.This special construction also has outstanding cleaning performance to the plastics of poor fluidity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the close-up schematic view at A place in injection initial stage Fig. 1;
Fig. 3 is the close-up schematic view of expecting clearly A place in stage diagram 1;
Fig. 4 is the structural representation of barrel before the utility model injection;
Fig. 5 is the perspective view of the utility model injection piston;
Fig. 6 is the main TV structure schematic diagram of the utility model injection piston;
Fig. 7 be in Fig. 6 A-A to sectional structure schematic diagram;
Fig. 8 be in Fig. 6 B-B to sectional structure schematic diagram;
In figure: 1-1 plasticizing charging barrel, 1-2 plasticized screw, 2 extension bars, 3 rotary valves, 4 nozzles, 5 nozzle connecting rods, barrel before 6 injections, 7 injection pistons, 7-1 main body, 7-2 expects step clearly, 7-3 injection head, 7-4 second cylinder, 7-5 second round platform, 7-6 runner hole, 7-7 cannelure, 7-8 face of cylinder runner, 7-9 center flow channels, 8 storage compartments, 9 injection barrels, 10 plunger rods.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.Should be appreciated that enforcement of the present utility model is not limited to the following examples, any pro forma accommodation make the utility model and/or change all will fall into the utility model protection domain.
In the utility model, if not refer in particular to, all parts, percentage are unit of weight, and the equipment adopted and raw material etc. all can be buied from market or this area is conventional.Method in following embodiment, if no special instructions, is the conventional method of this area.
Embodiment:
Injection piston described in the utility model is as Fig. 1, a kind of parts with the plastics extruding machine of expecting clearly function shown in Fig. 2 and Fig. 3, this plastics extruding machine comprises injecting assembly and plasticizing assembly, injecting assembly is connected by extension bar 2 with plasticizing assembly, plasticizing assembly comprises plasticized screw 1-2 and plasticizing charging barrel 1-1, injecting assembly comprises nozzle 4, barrel 6 before injection, injection barrel 9, injection piston 7 and plunger rod 10, before injection, the inner chamber of barrel 6 and injection barrel forms storage compartment 8, nozzle 4 is connected with the left end of barrel before injection by nozzle connecting rod 5, arrange in barrel before injection and control melting charge and enter storage compartment and melting charge enter nozzle rotary valve 3 from storage compartment.
Injection piston as shown in Fig. 5, Fig. 6 and Fig. 7, the main body 7-1 of injection piston is cylinder, it has one in round table-like injection head 7-3, arrange between injection head and main body and expect step 7-2 clearly, clear material step is formed by connecting by the second cylinder 7-4 and the second round platform 7-5, the other end of the second cylinder is connected with at the bottom of the round platform of injection head, and the other end of the second round platform is connected with main body.Before injection, barrel has with the injection head of injection piston and expects the inner chamber wall (see Fig. 4) that step outline matches clearly.
Injection head, clear material step and main body are the rotary bodies with same axle center.The main body of injection piston is arranged the runner being communicated to center, injection head outer face from body outer wall face.
The main body of injection piston with expect one end radial direction that step connects is evenly distributed with several faces of cylinder runner 7-8 clearly, as shown in Figure 8, in the present embodiment, be provided with 10 face of cylinder runners altogether.Each face of cylinder runner is in the same plane, the center of flow passage body outer wall face, the face of cylinder and this plane, and the external port of each face of cylinder runner is runner hole 7-6, and runner hole is little horn-like of outer imperial palace, is conducive to the inflow of buildup.The outer wall of the main body of injection piston is also arranged several cannelure 7-7 for holding piston ring, runner hole 7-6 is positioned at the left end of cannelure, and namely runner hole will be arranged near the side of injection head.
As shown in Figure 7, in injection head, be provided with the center flow channels 7-9 arranged along axle center, one end of center flow channels and the inner space of the front barrel of injection, the other end of center flow channels and described face of cylinder flow passage.Center flow channels and face of cylinder runner perpendicular.Center flow channels on injection head is arranged to the little horn mouth of outer imperial palace with one end of the inner space of the front barrel of injection, is conducive to the inflow of buildup.
Clear material principle of the present utility model is as follows:
Fig. 1 is storing process.Plasticized screw 1-2 extrudes the melting charge of plasticizing, and melting charge enters by injecting front barrel through extension bar, rotary valve, the storage compartment 8 that injection barrel and injection piston are formed, for the cleaning of injecting barrel is prepared.
Fig. 2 is the structure chart at injection initial stage.Storing is complete, rotary valve dislocation.Nozzle, nozzle extension bar, before injection, the runner of barrel is connected.When just having started to inject, along with the reach of injection piston, the melting charge in storage compartment successively before injection piston with injection the gap of barrel, nozzle extension bar and nozzle penetrate, now, the buildup in each runner can obtain cleaning to a certain extent.
Fig. 3 is the structure chart of expecting clearly the stage.Along with the carrying out of action of injection, injection piston progressively moves forward, and when injection piston front end enters barrel before injection, former runner is blocked.Now, the melting charge in storage compartment only has and enters by the face of cylinder runner on injection piston periphery wall the center flow channels be arranged in injection piston axle center, completes injection cleaning action.Because the flow of injection piston center flow channels moves produced flow much smaller than injection piston, thus in storage compartment, naturally set up certain pressure.Material tube inner wall before injection, the buildup on injection material tube inner wall and injection piston surface relies on this pressure to realize the mother's of cleaning.And as long as the feeding rate of adjustment injection piston, the pressure in storage compartment just can regulate, thus can wash the defective material of storage compartment's surrounding easily.Because being inject sky, the pressure in storage compartment also can not be too high, can not form any damage to the piston ring on injection piston.
Through the continuous circulation of storing process and clear material process, the defective material that storage compartment's surrounding is gathered achieves to be cleared up thoroughly.
Above-described embodiment is one of the present utility model preferably scheme, not does any pro forma restriction to the utility model, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.

Claims (9)

1. the injection piston for plastics extruding machine, it is characterized in that: the main body of described injection piston is cylinder, it has one in round table-like injection head, arrange between injection head and main body and expect step clearly, clear material step is formed by connecting by the second cylinder and the second round platform, the other end of the second cylinder is connected with at the bottom of the round platform of injection head, and the other end of the second round platform is connected with main body.
2. the injection piston for plastics extruding machine according to claim 1, is characterized in that: described injection head, clear material step and main body are the rotary bodies with same axle center.
3. the injection piston for plastics extruding machine according to claim 1, is characterized in that: the main body of described injection piston is arranged the runner being communicated to center, injection head outer face from body outer wall face.
4. the injection piston for plastics extruding machine according to claim 1, is characterized in that: the main body of described injection piston with expect one end radial direction that step connects is distributed with several face of cylinder runners clearly.
5. the injection piston for plastics extruding machine according to claim 4, is characterized in that: each face of cylinder runner is in the same plane, the center of flow passage body outer wall face, the face of cylinder and this plane.
6. the injection piston for plastics extruding machine according to claim 4 or 5, it is characterized in that: in injection head, be provided with the runner arranged along axle center, one end of runner and the inner space of the front barrel of injection, the other end of runner and described face of cylinder flow passage.
7. the injection piston for plastics extruding machine according to claim 6, is characterized in that: the runner on injection head is arranged to the little horn mouth of outer imperial palace with one end of the inner space of the front barrel of injection.
8. the injection piston for plastics extruding machine according to claim 4 or 5, is characterized in that: the external port of each face of cylinder runner is runner hole, and runner hole is little horn-like of outer imperial palace.
9. for a barrel before the injection of plastics extruding machine, it is characterized in that: before described injection, barrel has with the injection head of injection piston according to claim 1 and expects the inner chamber wall that step outline matches clearly.
CN201420799660.6U 2014-12-17 2014-12-17 For barrel before the injection piston of plastics extruding machine and the injection that is mated Active CN204566596U (en)

Priority Applications (1)

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CN201420799660.6U CN204566596U (en) 2014-12-17 2014-12-17 For barrel before the injection piston of plastics extruding machine and the injection that is mated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420799660.6U CN204566596U (en) 2014-12-17 2014-12-17 For barrel before the injection piston of plastics extruding machine and the injection that is mated

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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014885A (en) * 2015-08-20 2015-11-04 泰瑞机器股份有限公司 Runner-free switching valve internal recycle material removing type screw plunger plastic injection molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014885A (en) * 2015-08-20 2015-11-04 泰瑞机器股份有限公司 Runner-free switching valve internal recycle material removing type screw plunger plastic injection molding machine

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