CN104526995B - A kind of plastics extruding machine with clear material function - Google Patents

A kind of plastics extruding machine with clear material function Download PDF

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Publication number
CN104526995B
CN104526995B CN201410782374.3A CN201410782374A CN104526995B CN 104526995 B CN104526995 B CN 104526995B CN 201410782374 A CN201410782374 A CN 201410782374A CN 104526995 B CN104526995 B CN 104526995B
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China
Prior art keywords
injection
barrel
cylinder
runner
clear material
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CN201410782374.3A
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Chinese (zh)
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CN104526995A (en
Inventor
周宏伟
罗居红
李立峰
高镭
卢运洁
戴金富
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TEDERIC MACHINERY CO Ltd
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TEDERIC MACHINERY CO Ltd
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
    • B29C45/544Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw the plasticising unit being connected to a transfer chamber in the injection unit at the upstream side of the injection piston
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58Details
    • B29C45/586Injection or transfer plungers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58Details
    • B29C45/62Barrels or cylinders

Abstract

The present invention relates to a kind of plastics extruding machine with clear material function, including injecting assembly and plasticizing assembly, injecting assembly includes the front barrel of nozzle, injection, injection barrel, injection piston and plunger rod, the main body of injection piston is cylinder, it has one in round table-like injection head, arrange between injection head and main body and expect clearly step, 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;Before injection, barrel has the injection head with injection piston and the clear inner chamber wall expecting that step outline matches.The injecting assembly of plastics extruding machine of the present invention has expects clearly function, can save scavenging period and clean raw material, being greatly saved cleaning cost, thus in solving industry, plastics extruding machine is difficult to the difficult problem cleaned.

Description

A kind of plastics extruding machine with clear material function
Technical field
The present invention relates to a kind of plastic shaping thermomechanical components, particularly to a kind of plastics extruding machine with clear material function.
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, had both played storing function, and had played again function of injection.Its shortcoming is that disposable injection volume can not be too big, and in screw retreats, its effective thread reduces and affects plasticizing quality.At present, the reciprocating plastic-injection moulding machine of this single screw rod that mold clamping force is 40000KN that China is domestic, its disposable theoretical volumetric injection is 62000cm3.And the TRX-J plastics extruding machine that mold clamping force is 40000KN that Tairui Machine Co., Ltd. manufactures, its disposable theoretical volumetric injection is up to 226000cm3, it is 3.6 times of normal injection machine, provides equipment for especially big heavy thick plastic product manufacture, be the innovation of a plastics equipment, be widely used to the production of the product such as large-size pipe, large-scale inspection shaft at present.
nullApplication No. 201210433567.9、The Chinese invention patent application of applying date 2012-10-25 discloses an a kind of note bimodulus plastics extruding machine,Including injection fuselage、Matched moulds fuselage、Squeezing equipment and clamping device,Described squeezing equipment is arranged on injector,Clamping device is fixed on clapper die spotting press,Dovetail groove guide rail it is provided with described injector,Described clamping device is two sets,Described squeezing equipment include 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 invention utilized within the cool time of first set mould, produces the second mold, saves energy expenditure, improves production efficiency, and the product weight of two molds can be different.But the injecting assembly of this invention, especially barrel, the easy buildup in injection piston end, not easy-clear before injection.This technological deficiency is widely present in current existing various plastics extruding machine.
Summary of the invention
The present invention provides a kind of plastics extruding machine with clear material function, can realize injecting front barrel, the cleaning of injection piston end defective material.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of plastics extruding machine with clear material function, including injecting assembly and plasticizing assembly, injecting assembly is connected by extension bar with plasticizing assembly, plasticizing assembly includes plasticized screw and plasticizing charging barrel, injecting assembly includes nozzle, barrel before injection, injection barrel, injection piston and plunger rod, before injection, the inner chamber of barrel and injection barrel constitutes storage compartment, the rotary valve controlling melting charge entrance storage compartment and melting charge from storage compartment's entrance nozzle is set in barrel before injection, 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 clearly step, 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, the other end of the second round platform is connected with main body;Before described injection, barrel has the injection head with injection piston and the clear inner chamber wall expecting that step outline matches.Before injection, barrel and injection piston are matched in clearance.
As preferably, described injection head, clear material step and main body are to have the rotary body in same axle center.
As preferably, the main body of described injection piston arranges the runner being communicated to center, injection head outer face from body outer wall face.This runner, for being derived by the high pressure defective material in storage compartment, is the passage of connection storage compartment and plunger centre bore.
As preferably, one end that the main body of described injection piston connects with clear material step is radially distributed several face of cylinder runners.Further, each face of cylinder runner is in the same plane, flow passage body outer wall face, the face of cylinder and the center of this plane.As preferably, in injection head, it is provided with the runner arranged along axle center, the inner space of one end of runner barrel front with 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, and the buildup making body outer wall face can be through the inside of injection piston, flow out from the free end of injection head, it is achieved that injection piston outside wall surface dead angle expect clearly function.
As preferably, one end of the inner space of the barrel front with injection of the runner on injection head is arranged to the horn mouth that outer imperial palace is little.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.
The invention has the beneficial effects as follows: the present invention comprises barrel and injection piston before two component injection having carried out particular design, compact conformation after the transformation of these two parts, rationally, the injecting assembly making plastics extruding machine has expects clearly function, scavenging period can be saved and clean raw material, it is greatly saved cleaning cost, thus in solving industry, plastics extruding machine is difficult to the difficult problem cleaned.This special construction also has outstanding cleaning performance to the plastics of poor fluidity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the close-up schematic view in injection initial stage Fig. 1 at A;
Fig. 3 is close-up schematic view at A in material stage diagram 1 clearly;
Fig. 4 is the structural representation that the present invention injects front barrel;
Fig. 5 is the perspective view of injection piston of the present invention;
Fig. 6 is the main TV structure schematic diagram of injection piston of the present invention;
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 clearly step, 7-3 injection head, 7-4 the second cylinder, 7-5 the 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 combine accompanying drawing, technical scheme is described in further detail.Should be appreciated that the enforcement of the present invention is not limited to the following examples, any pro forma accommodation and/or the change of being made the present invention fall within scope.
In the present invention, if not refering in particular to, all of part, percentage ratio are unit of weight, and the equipment used and raw material etc. are all commercially available or commonly used in the art.Method in following embodiment, if no special instructions, is the conventional method of this area.
Embodiment:
Such as Fig. 1, a kind of plastics extruding machine with clear material function shown in Fig. 2 and Fig. 3, including injecting assembly and plasticizing assembly, injecting assembly is connected by extension bar 2 with plasticizing assembly, plasticizing assembly includes plasticized screw 1-2 and plasticizing charging barrel 1-1, injecting assembly includes 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 constitutes storage compartment 8, nozzle 4 is connected with the left end of barrel before injection by nozzle connecting rod 5, the rotary valve 3 controlling melting charge entrance storage compartment and melting charge from storage compartment's entrance nozzle is set in barrel before injection.
As shown in Fig. 5, Fig. 6 and Fig. 7, main body 7-1 of injection piston is cylinder, it has one in round table-like injection head 7-3, clear material step 7-2 is set between injection head and main body, 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 the injection head with injection piston and the clear inner chamber wall (see figure 4) expecting that step outline matches.
Injection head, clear material step and main body are to have the rotary body in same axle center.The runner being communicated to center, injection head outer face from body outer wall face is set in the main body of injection piston.
One end that the main body of injection piston connects with clear material step is radially evenly distributed with several faces of cylinder runner 7-8, as shown in Figure 8, is provided with 10 face of cylinder runners in the present embodiment 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, the beneficially inflow of buildup.Also setting up several cannelure 7-7 for accommodating piston ring on the outer wall of the main body of injection piston, runner hole 7-6 is positioned at the left end of cannelure, i.e. runner hole and to arrange near the side of injection head.
As it is shown in fig. 7, be provided with center flow channels 7-9 arranged along axle center in injection head, the inner space of one end of center flow channels barrel front with injection, the other end of center flow channels and described face of cylinder flow passage.Center flow channels is perpendicular with face of cylinder runner.One end of the inner space of the barrel front with injection of the center flow channels on injection head is arranged to the inflow of the horn mouth that outer imperial palace is little, beneficially buildup.
The clear material principle of the present invention is as follows:
Fig. 1 is storing process.The melting charge of plasticized screw 1-2 extruding plasticizing, melting charge enters by injecting front barrel through extension bar, rotary valve, the storage compartment 8 that injection barrel and injection piston are formed, and the cleaning for injection 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 starting to inject, along with the reach of injection piston, the gap of barrel, nozzle extension bar and the nozzle injection before injection piston with injection successively of the melting charge in storage compartment, now, the buildup in each runner can obtain a certain degree of cleaning.
Fig. 3 is the structure chart expecting clearly the stage.Along with the carrying out of action of injection, injection piston progressively moves forward, and when barrel before injection piston front end enters injection, former runner is blocked.Now, the melting charge in storage compartment is only entered by the face of cylinder runner on injection piston periphery wall and is arranged at the center flow channels in injection piston axle center, completes to inject cleaning action.Owing to 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 injecting, the buildup on injection material tube inner wall and injection piston surface relies on the mother's of this pressure realization cleaning.And, as long as adjusting the feeding rate of injection piston, the pressure in storage compartment can be carried out regulation, such that it is able to wash the defective material of storage compartment's surrounding easily.Because being to inject sky, the pressure in storage compartment also will not be the highest, the piston ring on injection piston will not be formed any damage.
Through storing process and the continuous circulation of clear material process, the defective material of storage compartment's surrounding accumulation achieves to be cleared up thoroughly.
Embodiment described above is the one preferably scheme of the present invention, and the present invention not makees any pro forma restriction, also has other variant and remodeling on the premise of without departing from the technical scheme described in claim.

Claims (6)

1. a plastics extruding machine with clear material function, including injecting assembly and plasticizing assembly, injecting assembly is connected by extension bar with plasticizing assembly, plasticizing assembly includes plasticized screw and plasticizing charging barrel, injecting assembly includes nozzle, barrel before injection, injection barrel, injection piston and plunger rod, before injection, the inner chamber of barrel and injection barrel constitutes storage compartment, the rotary valve controlling melting charge entrance storage compartment and melting charge from storage compartment's entrance nozzle is set in barrel before injection, 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 clearly step, 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, the other end of the second round platform is connected with main body;Before described injection, barrel has the injection head with injection piston and the clear inner chamber wall expecting that step outline matches;Arranging the runner being communicated to center, injection head outer face from body outer wall face in the main body of described injection piston, one end that the main body of described injection piston connects with clear material step is radially distributed several face of cylinder runners.
The plastics extruding machine with clear material function the most according to claim 1, it is characterised in that: described injection head, clear material step and main body are to have the rotary body in same axle center.
The plastics extruding machine with clear material function the most according to claim 1, it is characterised in that: each face of cylinder runner is in the same plane, flow passage body outer wall face, the face of cylinder and the center of this plane.
The plastics extruding machine with clear material function the most according to claim 1 and 2, it is characterised in that: it is provided with the runner arranged along axle center in injection head, the inner space of one end of runner barrel front with injection, the other end of runner and described face of cylinder flow passage.
The plastics extruding machine with clear material function the most according to claim 4, it is characterised in that: one end of the inner space of the barrel front with injection of the runner on injection head is arranged to the horn mouth that outer imperial palace is little.
The plastics extruding machine with clear material function the most according to claim 1 and 2, it is characterised 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.
CN201410782374.3A 2014-12-17 2014-12-17 A kind of plastics extruding machine with clear material function Active CN104526995B (en)

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Application Number Priority Date Filing Date Title
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CN104526995B true CN104526995B (en) 2016-08-24

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CN105922523B (en) * 2016-06-27 2018-05-15 海天塑机集团有限公司 A kind of currency structure of injection molding machine

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DE19512826A1 (en) * 1994-05-25 1995-11-30 Herzog Ag Injection moulding filter jet assembly
EP1400332B1 (en) * 2002-09-18 2010-11-17 Amcor Limited Method and apparatus for dosing an additive in the inlet of an injection moulding press, and injection moulding press fitted with a dosing apparatus
CN201172270Y (en) * 2007-09-20 2008-12-31 忻俊 Injection moulding machine with injection and pre-injection independent synchronization
CN101954727A (en) * 2010-08-17 2011-01-26 陈志华 Energy-efficient type injection molding machine

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