CN1034157C - Double-side oblique-wedge high-efficiency injection forming machine - Google Patents

Double-side oblique-wedge high-efficiency injection forming machine Download PDF

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Publication number
CN1034157C
CN1034157C CN94100400A CN94100400A CN1034157C CN 1034157 C CN1034157 C CN 1034157C CN 94100400 A CN94100400 A CN 94100400A CN 94100400 A CN94100400 A CN 94100400A CN 1034157 C CN1034157 C CN 1034157C
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China
Prior art keywords
wedge
injection
plunger
assembly
assemblies
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Expired - Fee Related
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CN94100400A
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CN1100990A (en
Inventor
华玉培
王效岳
袁光明
袁玉珍
刘元义
赵金龙
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SHANGDONG ENGINEERING COLLEGE
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SHANGDONG ENGINEERING COLLEGE
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Abstract

The present invention relates to a high efficient energy saving injection molding machine with oblique wedges in double surfaces. The injection molding machine comprises five assemblies of a machine frame, matched mold assemblies, injection assemblies, a hydraulic control assembly and an electric control assembly, wherein two groups of eudipleural matched mold assemblies and the injection assemblies corresponding to the matched mold assemblies are arranged above the machine frame. The horizontal reciprocating movement of pistons in an injection cylinder is converted into up-and-down movement of plungers by two groups of oblique-wedge mechanisms on the left and on the right so as to respectively drive the two groups of plungers to run. Compared with similar machine types, the injection molding machine has lower energy consumption, saves power by 15KW and enhances work efficiency by one time. Pressure ratio valves are replaced by the oblique-wedge mechanisms. Each of the matched mold assemblies comprises three matched mold plates and gear regulating mechanisms, so the injection molding machine has the advantages of simple structure, cost reduction and convenient use.

Description

The double-side oblique-wedge injection moulding machine
The present invention discloses a kind of double-side oblique-wedge injection moulding machine.
At present, the injection moulding machine of producing both at home and abroad and using all owing to the forming process of high speed and high pressure, makes the machine construction complexity, and weight is big, and energy consumption is big.A kind of " the FS type Jet forming machine " that Japan " Nissei Plastic Industrial Co., Ltd " provides promptly adopts single face direct-injection type hydraulic injection matched moulds, and energy consumption is big, need use than heavy-duty motor and drive this machine works.ZL88214119.8 angle square formula hydraulic injection molding machine; changed horizontal direct-injection type hydraulic injection; but adopt two cover oil cylinder pistons; control the feeding pressure mechanism and the horizontal press moulding mechanism of vertical direction respectively; same energy consumption is big, and the injection cylinder inner carrier of every injection machine moves back and forth; idle stroke is arranged, inefficiency.
For fear of above-mentioned weak point, the object of the present invention is to provide a kind of double-side oblique-wedge injection moulding machine, adopt a cover cylinder apparatus, back and forth drive the plunger assembly work of two groups of symmetries.Utilize the horizontal reciprocating movement of Wedge mechanism with the oil cylinder inner carrier simultaneously, be converted to the vertical up-or-down movement of plunger, substitute the direct-injection type hydraulic injection, the machine of realizing is that two machines use, and is energy-conservation and enhance productivity.
In order to achieve the above object, the present invention has taked following technical scheme:
The double-side oblique-wedge injection moulding machine, form by support assembly 49, injection assembly 50, matched moulds assembly 51, hydraulic control assembly 52, electrical equipment control assembly 53, injection assembly and matched moulds assembly are positioned at the frame top, the hydraulic control assembly is installed in frame inside, and the total face casing of electrical equipment control is located at the centre position of frame front.Injection support of the present invention left and right sides symmetry is installed two combination die assemblies 51, the upper fixed injection assembly 50 of injection support, the injection assembly comprises two groups of vertically arranged plunger assemblies of symmetry, be positioned at the middle horizontally disposed cylinder apparatus of two groups of plunger assemblies, and the Wedge mechanism that plunger assembly and cylinder apparatus are connected as a single entity, rely on Wedge mechanism to realize a cover cylinder apparatus, drive two groups of plunger work and avoid idle stroke in the reciprocating motion of the pistons.
In order to realize that a cover cylinder apparatus drives two groups of plunger work, cylinder apparatus of the present invention is made up of oil cylinder 28, piston 30, piston rod 29,30 are positioned at piston rod 29 central authorities when living through, and the piston rod two ends are separately fixed at the central authorities of left and right push pedal 22, are connected as a single entity through push pedal 22 and wedge 14.
The two symmetrical groups Wedge mechanism that cylinder apparatus and left and right sides plunger assembly are connected as a single entity recited above, every group of Wedge mechanism is made up of the wedge 14 and the connector of two symmetrical parallel, the front end of every wedge connects as one with the reinforced pull bar 27 of injection assembly, and control is reinforced.The rear end of two wedges is separately fixed at push pedal 22 two ends, two wedges are connected as a single entity and are connected as a single entity with the piston rod 29 that is fixed on push pedal 22 central authorities through push pedal, the top of wedge 14 is positioned at the set guide-track groove in injection seat top 19, the bottom of wedge 14 is positioned at the plunger backhaul groove that plunger backhaul frid 10,13 constitutes, the following working face of wedge is the inclined-plane, this inclined-plane contacts with bearing 9, and bearing 9 is installed on the wedge 12, and wedge 12 connects as one with plunger 16.
Wedge mechanism of the present invention replaces the pressure proportioning valve in the traditional injection moulding machine, realizes by following measure:
In order to make plunger when work obtain different pressures and speed, be provided with 3~4 sections different operating angles under wedge on the working face, leading portion is 35~45 °, and the stage casing is 15~30 °, back segment is 5~15 °, comprises bearing 9, wedge 12, pull bar 15 and pressing plate 17 with the contacted connector of following working face.Bearing 9 contacts with following working face, be installed on the wedge 12, and be positioned at plunger backhaul groove, install on the wedge 12 and save 15, pull bar 15 other end fixation clips 17, pressing plate 17 is fixed as one with plunger 16 again, when wedge 14 when the promotion lower edge of piston rod guide rail moves, the bearing 9 that contacts with the wedge working face is by wedge 12, pull bar 15 drives plunger 16 with pressing plate 17, move up and down, because the inclined-plane that working face has 3~4 sections different angles makes plunger obtain different pressures and speed when moving up and down, by Wedge mechanism, the horizontal reciprocating movement of oil cylinder inner carrier is converted to the up-and-down movement of plunger simultaneously.
Another difference of the present invention is and the symmetry two combination die assemblies of plunger assembly to celebrating.Each matched moulds assembly is made up of die cylinder device 44, three blocks of parallel matched moulds plates 33,35,40 and template guiding mechanism.Die cylinder 44 is lifted between rear pattern plate 40 and the middle moving die plate 35, its piston rod is articulated as one with the front tension bar 37 and the back stay 38 that are installed on rear pattern plate 40 and the middle moving die plate 35, when piston rod is worked, move up and down and promote front tension bar 37, back stay 38, moving die plate move left and right in the middle of making, realize matched moulds, the die sinking action, this matched moulds assembly two ends are provided with guiding mechanism, before can adjusting, the distance of rear pattern plate, guiding mechanism is by adjusting gear 46, with the gear wheel 39 of adjusting gear 46 engagements, and form with four adjustment nuts 41 that have gear of gear wheel 39 engagement, before the adjustment nut is installed in respectively and passes, the end of four pull bars 34 of rear pattern plate makes the nozzle and the injection mould cast gate centering of plunger assembly by guiding mechanism.
Owing to taked above technical scheme, the present invention's characteristics compared with prior art is as follows:
1, two groups of plunger assembly work about the present invention injects and drives respectively in the assembly inner carrier reciprocating stroke, no-idle running only drives one group of plunger assembly work in the prior art, idle stroke is arranged, and the present invention realizes that a machine is that two machines use, and raises the efficiency.
2, the present invention utilizes the horizontal reciprocating movement of Wedge mechanism with piston, is converted to moving up and down of plunger, than the available technology adopting direct press type device lowering energy-saving that surges, compares with two similar types, saves power 15KW.
3, adopt double-side oblique-wedge mechanism, the wedge working face has different operating angles, can make plunger realize the injection of three stage pressures, satisfy plastic shaping goods technological requirement, and pressure proportioning valve control in the replacement hydraulic system, save 2000 yuan of costs, guarantee plastic injection quality.
4, the present invention is at the peripheral suit induction heater of plunger, quick heating, and Heat stability is good, thermal losses is few, and is safe and reliable, and the defective and the plunger injection that have overcome resistance heater plastify uneven defective.
5, matched moulds assembly of the present invention is simplified, and by four blocks of matched moulds plates of the prior art, changes three blocks of matched moulds plates into, adopts the gear guiding mechanism, and use is made, installs easy to adjust.
6, adjustment of the present invention, installation are easy to use, are applicable to the injection moulding of various thermoplastics such as polystyrene, polyethylene, nylon, polycarbonate and polysulfones.
7, hydraulic control system of the present invention and electrical apparatus control system and prior art are slightly different, and slightly simplify.But a cover control system is controlled two machines (two cover injection device and two fit mould assemblies), saves nearly 1.6 ten thousand yuan of cost.
In order to further specify characteristics of the present invention, the embodiment below in conjunction with shown in the accompanying drawing 1 to 5 is described in detail,
Fig. 1 double-side oblique-wedge high-efficiency injection forming machine general structure schematic diagram;
Fig. 2 injects assembly side-looking cross-sectional view;
Fig. 3 Wedge mechanism schematic diagram;
Fig. 4 injection cylinder apparatus structure schematic diagram;
Fig. 5 matched moulds assembly structure schematic diagram and C, D are to template guiding mechanism schematic diagram.
Among the figure, 1 injection support, 2 nozzles, 3 die cones, 4 barrels, 5 induction heaters, 6 thermocouples, 7 injection seats, 8 guide pillars, 9 bearings, 10 plunger backhaul frids (left side), 11 rollers, 12 wedges, 13 plunger backhaul frids (right side), 14 wedges, 15 pull bars, 16 plungers, 17 pressing plates, 18 wedge motion guide plates (left side), 19 wedge motion guide rails, 20 oblique railway carriage or compartment motion guide plates (right side), 21 top boards, 22 push pedals, 23 magazine attachments, 24 nip drum posts, 25 bearings, 26 bolsters, 27 reinforced pull bars, 28 oil cylinders, 29 piston rods, 30 pistons, 31 pipe joints, 32 oil cylinder covers, 33 front templates, 34 pull bars, moving die plate in the middle of 35,36 eject cylinder apparatus, 37 front tension bars, 38 back stays, 39 gear wheels, 40 rear pattern plates, 41 adjust nut, 42 frames, 43 suspension rods, 44 die cylinder devices, 45 guard shields, 46 adjust gear, 47 briquettings, 48 screws, 49 support assemblies, 50 injection assemblies, 51 matched moulds assemblies, 52 hydraulic control assemblies, 53 electrical equipment control assemblies.
Fig. 6 double-side oblique-wedge injection moulding machine job order block diagram.
Structure of the present invention as shown in drawings, Fig. 1 is a general structure, two symmetrical groups matched moulds assembly is installed above frame is overall, the matched moulds assembly on the left side is in the matched moulds operation, and the right is the die sinking operation, and the injection assembly is installed on the injection support, cylinder apparatus is positioned at central authorities, left side plunger is in descendingly in the injection assembly, and the right plunger is in upward position, matches with the matched moulds assembly.Injection assembly inner cylinder device drives two groups of plunger work respectively.And it is synchronous with the matched moulds assembly.Fig. 2, Fig. 3 concern schematic diagram between the schematic diagram that links of Wedge mechanism and plunger and wedge and each parts, Fig. 4 is the cylinder apparatus structural representation, from the position of wedge shown in Fig. 2 to Fig. 4 the injection assembly, its upper and lower respectively with reinforced pull bar, push pedal, connecting top moves along guide rail, the bottom working face is connected as a single entity through connector and plunger, when the piston motion, wedge moves thereupon, following working face inclined-plane forces bearing and connector that plunger is moved up and down, and drives reinforced backward stick action when wedge moves simultaneously, and reinforced action is cooperated with plunger work.Tiltedly working face has the different operating angle under the material, thereby plunger produces different pressures at the volley.Be that matched moulds assembly structure, template are adjusted structural representation among Fig. 5.The present invention adopts three templates, utilizes the position of the rotation adjustment template of gear.
Operation principle of the present invention as shown in Figure 6, we establish the injection device of injection moulding machine left part and the matched moulds assembly is " I ", the injection device on the right and matched moulds assembly are " II ".
Injection molding of the present invention is installed in respectively on the middle moving die plate and front template of " I ", " II ".During work, shut complete door, the middle moving die plate of " I " closes with front template and to touch (matched moulds) under die cylinder and front and back pull bar effect, and the wedge of " I " is under the effect of injection cylinder piston, to left movement, make plunger descending through connector, at this moment, will plastify uniform molten plastic by induction heater in the barrel, be injected in (injection), pressurize then in the mould with high speed and high pressure.At this moment, the plunger of " II " is return, and by dosing device solid plastic is added to give in the barrel and mould, simultaneously, the middle moving die plate of " II " separates (die sinking) with corresponding front mould under the effect of die cylinder and front and back pull bar, and by ejecting oil cylinder product is ejected.Matched moulds immediately." I " pressurize finishes, the wedge right lateral, and it is up to drive plunger, and reinforced thereupon the giving of the feeding device of " I " moulded simultaneously, and " II " injection, ejects product at " I " die sinking, and this process is gone round and begun again and is carried out.
Mold closing mechanism of the present invention is adjusted fairly simple.When installation mold, spray must be prevented and aim at cast gate, otherwise adjust template position, when adjusting rear pattern plate, the backing-up screw of adjusting nut 41 is unclamped, gear 46 is adjusted in rotation, drive the gear wheel 39 with its engagement, and have gear with four of gear wheel 39 engagements and adjust nut 41 and rotate simultaneously, make the rear pattern plate move left and right, after aiming at, bridge screw 48 is screwed, rear pattern plate is fixed on desired location on the frame through briquetting 47.Rotate the backing-up screw of adjusting nut 41 simultaneously, make nut check, adjust front template, adopt identical method to get final product as need.
Technical parameter of the present invention is as follows:
Nominal injection volume 60cm 3
Diameter of plunger 38mm
Ram travel 170mm
Power of motor 7.5KW
Maximum injection pressure 200MPa
Barrel heating power 3KW
Mold clamping force 500KN
Back mould power 44KN
Ejecting force 20KN
Maximum injection area 130c 2
Template range 180mm
Mould maximum ga(u)ge 250mm
Mould minimum thickness 150mm
Complete machine size 400 * 600 * 1800mm

Claims (4)

1, a kind of double-side oblique-wedge injection moulding machine, by frame, injection, matched moulds, hydraulic control, five assemblies of electrical equipment control are formed, injection assembly and matched moulds assembly are positioned at the frame top, the hydraulic control assembly is installed in frame inside, the total face casing of electrical equipment control is located at the centre position of frame front, it is characterized in that injecting support and be installed in middle part above the frame, in the injection support, main motor is housed, injection support left and right sides symmetry is installed two combination die assemblies, the upper fixed injection assembly of injection support, the injection assembly comprises two groups of vertically arranged plunger assemblies of symmetry, horizontally disposed cylinder apparatus is positioned at the centre of two groups of plunger assemblies, and the Wedge mechanism that plunger assembly and cylinder apparatus are connected as a single entity, the following working face of wedge is provided with 3~4 sections different operating angles, and leading portion is 35~45 °, the stage casing is 15~30 °, back segment is 5~15 °, comprises bearing with the contacted connector of following working face, wedge, pull bar and pressing plate, pressing plate and plunger are fixed as one.
2, double-side oblique-wedge injection moulding machine according to claim 1, it is characterized in that cylinder apparatus is made up of oil cylinder, piston, piston rod, piston is positioned at piston rod central authorities, and the piston rod two ends are separately fixed at left and right push pedal central authorities, connect as one through push pedal and wedge.
3, double-side oblique-wedge injection moulding machine according to claim 1, it is characterized in that Wedge mechanism is made up of the wedge and the connector of two symmetrical parallel, the front end of every wedge is connected with the reinforced pull bar of plunger assembly, the rear end of two wedges is separately fixed at the two ends of push pedal, be connected as a single entity through push pedal and piston rod, the top of wedge is positioned at the set guide-track groove in injection seat top, and the bottom of wedge is positioned at plunger backhaul groove, and the connector that the following working face and the plunger of wedge are connected as a single entity contacts.
4, according to right 1 described double-side oblique-wedge injection moulding machine, it is characterized in that the matched moulds assembly is by the die cylinder device, three blocks of parallel matched moulds plates and template guiding mechanism are formed, die cylinder is lifted between rear pattern plate and the middle moving die plate, its piston rod be installed on rear pattern plate and the middle moving die plate before, back stay is articulated as one, the template guiding mechanism is by adjusting gear, with the gear wheel of adjusting gears engaged, and form with four adjustment nuts that have gear of gear wheel engagement, adjust nut be installed in respectively pass before, the end of four pull bars of rear pattern plate.
CN94100400A 1994-01-15 1994-01-15 Double-side oblique-wedge high-efficiency injection forming machine Expired - Fee Related CN1034157C (en)

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Application Number Priority Date Filing Date Title
CN94100400A CN1034157C (en) 1994-01-15 1994-01-15 Double-side oblique-wedge high-efficiency injection forming machine

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Application Number Priority Date Filing Date Title
CN94100400A CN1034157C (en) 1994-01-15 1994-01-15 Double-side oblique-wedge high-efficiency injection forming machine

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CN1100990A CN1100990A (en) 1995-04-05
CN1034157C true CN1034157C (en) 1997-03-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004047347A1 (en) * 2004-07-22 2006-02-16 Landshuter Werkzeugbau Alfred Steinl Gmbh & Co. Kg Injection molding machine and method for injection molding

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504046A (en) * 1983-05-10 1985-03-12 Keitaro Yonezawa Retracting clamp
CN2035702U (en) * 1988-09-17 1989-04-12 汪贤宋 Angle square type hydraulic injection moulding machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504046A (en) * 1983-05-10 1985-03-12 Keitaro Yonezawa Retracting clamp
CN2035702U (en) * 1988-09-17 1989-04-12 汪贤宋 Angle square type hydraulic injection moulding machine

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