CN108340536A - Large capacity rubber injection moulding machine - Google Patents

Large capacity rubber injection moulding machine Download PDF

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Publication number
CN108340536A
CN108340536A CN201810331045.5A CN201810331045A CN108340536A CN 108340536 A CN108340536 A CN 108340536A CN 201810331045 A CN201810331045 A CN 201810331045A CN 108340536 A CN108340536 A CN 108340536A
Authority
CN
China
Prior art keywords
injection
feed screw
screw extruder
barrel
cold feed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810331045.5A
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Chinese (zh)
Inventor
逄术清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaomi Three-Dimensional Numerical Control Machinery Co Ltd
Original Assignee
Gaomi Three-Dimensional Numerical Control Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gaomi Three-Dimensional Numerical Control Machinery Co Ltd filed Critical Gaomi Three-Dimensional Numerical Control Machinery Co Ltd
Priority to CN201810331045.5A priority Critical patent/CN108340536A/en
Publication of CN108340536A publication Critical patent/CN108340536A/en
Pending legal-status Critical Current

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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
    • B29C45/03Injection moulding apparatus
    • B29C45/13Injection moulding apparatus using two or more injection units co-operating with a single mould
    • 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

Abstract

The invention belongs to Development of Rubber Injection Molding Technology fields, more particularly to a kind of large capacity rubber injection moulding machine, injection seat is slidably fitted with by head lifting cylinder on upper beam, injection seat is equipped with injection hydraulic cylinder, the cylinder body for injecting hydraulic cylinder connects barrel, barrel is fixedly connected with injection-tube, and injection-tube installs the first injection nozzle;The side wall of barrel connects the first cold feed screw extruder, and upper beam adjusts oil cylinder by screw extruder and is slidably fitted with the second cold feed screw extruder, and the discharge port of the second cold feed screw extruder connects the second injection nozzle.The present invention first passes through the second cold feed screw extruder and injects sizing material into mould cavity, the first cold feed screw extruder that reruns feeds into barrel, material injection in barrel is entered in die cavity finally by injection hydraulic cylinder, realize large capacity rubber injection, device structure is simple, it can be improved on the basis of existing rubber injection machine, difficulty of processing is low, at low cost.

Description

Large capacity rubber injection moulding machine
Technical field
The invention belongs to Development of Rubber Injection Molding Technology field more particularly to a kind of large capacity rubber injection moulding machines.
Background technology
Rubber raw materials large viscosity, is not easy to inject poor fluidity, and easy incipient scorch when high temperature, therefore is with vulcanizing press Main compression molding method is in rubber product production always in occupation of leading position.With industries such as automobile, aerospace, electron electric powers Fast development, to the technical performance of rubber product, production cost and output efficiency, more stringent requirements are proposed, traditional mould Molded technology has been difficult to meet this development trend in market.And Development of Rubber Injection Molding Technology is due to the quick sulphur of sizing material high temperature Change, shorten the production cycle, it is easier to ensure that rubber product vulcanizes uniformity;And the precise forming in Guan Bi mould, Ke Yixian It writes ground and reduces glue side, utilization rate of raw materials and the percentage of A-class goods are high;And sizing material is in a mold by constant injection pressure sulfidization molding, system Product compactness is good, and geometric dimension is accurate, and physical and chemical performance is good;It is easy to operate, the degree of automation is high etc., and other methods of forming can not The advantages of replacement, is promoted and applied rapidly, is the developing direction of rubber cast product.
In recent years, with the fast development of modern technologies, higher want is proposed to rubber product quality and complexity It asks.And demand of the market to large-scale rubber product also increases significantly, existing constant volume injection device on the market exposes its note The shortcomings that capacity pressure penetrated has certain limitations, after injecting a certain amount of rubber, the injection pressure needed can be quite big, in addition needs When wanting large capacity rubber injection, such as more than 100000cc just mutually in requisition for quite huge equipment, device fabrication difficulty is big, at This height.
Invention content
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of large capacity rubber injection moulding machine, Neng Goujin are provided Row large capacity injection molding of rubber, device structure is compact, small, and solves the problems, such as that large capacity rubber injection pressure is big.
To reach above-mentioned technical purpose, the present invention provides a kind of large capacity rubber injection moulding machine, including injection mechanism and Clamping mechanism, the clamping mechanism include upper beam, and the injection mechanism includes injection seat, and the injection seat is lifted by head Oil cylinder is slidably mounted on the upper beam, and the injection seat is equipped with injection hydraulic cylinder, the cylinder of the injection hydraulic cylinder Body connects barrel, and the barrel is fixedly connected with injection-tube, and the first note is installed in the one end of the injection-tube for connecting mold cast gate Nozzle, first injection nozzle are adapted with mould gate;
The side wall of the barrel connects the first cold feed screw extruder, the discharging of the first cold feed screw extruder Mouthful and the barrel between be equipped with for sizing material from the first cold feed screw extruder into the barrel unidirectionally by check valve;
The upper beam adjusts oil cylinder by screw extruder and is slidably fitted with the second cold feed screw extruder, and described the The discharge port of two cold feed screw extruders connects the second injection nozzle, and second injection nozzle is adapted with mould gate.
As an improvement the draw ratio of the first cold feed screw extruder is squeezed more than the described second cold feed screw Go out the draw ratio of machine.
As a further improvement, the draw ratio of the first cold feed screw extruder is 15:1, the second cold feeding spiral shell The draw ratio of bar extruder is 12:1.
As a further improvement, the discharging direction of the first cold feed screw extruder is hung down with the barrel side wall Directly.
As a further improvement, the moving direction and discharging direction of second cold feed extruder in the same direction and Axially vertical with injection-tube, the rectangular shape of the second injection nozzle, second injection nozzle is interior equipped with through-hole, described logical Hole includes the first through hole part being connect with the injection port of the described second cold feed screw extruder, coordinates with the mould gate The second throughhole portions and connect the connection throughhole portions of the first through hole part and the second throughhole portions, the first through hole Partial axial direction is axially vertical with second throughhole portions, and the cross-sectional area of the first through hole part is more than described second The vertical sectional shape of the cross-sectional area of throughhole portions, the connection throughhole portions is triangle.
As a further improvement, first injection nozzle is equipped with through-hole in an axial direction, the through-hole is in truncated cone-shaped, described logical The cross-sectional area of one end that hole is connect with injection-tube is more than the cross-sectional area of one end that through-hole is connect with mold injection port.
As a further improvement, the aperture of first injection nozzle and the second injection nozzle is 12-25mm.
As a further improvement, the barrel and injection-tube are barrel and the injection by 38crmoal alloy steel makings Pipe, the barrel and injection-tube are externally provided with heating agent circulating sleeve.
Due to the adoption of the above technical scheme, the beneficial effects of the invention are as follows:
Large capacity rubber injection moulding machine provided by the invention, including the first cold feed screw extruder, the second cold feeding Screw extruder and injection hydraulic cylinder, when carrying out large capacity rubber injection, first using the second cold feed screw extruder to Sizing material is injected in mould cavity, since mould cavity space is big at this time, pressure is small needed for injection, can injection glue as much as possible Material is squeezed by screw rod at this time when required larger injection pressure cannot be injected by the second cold feed screw extruder Go out machine adjusting oil cylinder and remove the second cold feed screw extruder, injection-tube and the first injection nozzle and mould are made by head lifting cylinder Have cast gate cooperation, then run the first cold feed screw extruder and feed into barrel, feeding quantity is always feeding quantity to be needed to subtract The doses that second cold feed screw extruder has added, these sizing materials are all added in barrel, in the huge of injection hydraulic cylinder Under pressure effect, material injection in barrel is entered in die cavity, large capacity rubber may be implemented in feeding operation in two steps in this way Injection, meets existing large capacity rubber injection demand.
Large capacity rubber injection moulding machine provided by the invention is simple in structure, can be on the basis of existing rubber injection machine It is improved, difficulty of processing is low, at low cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention;
In attached drawing, 1- upper beams, 2- molds, 3- injection seats, 4- head lifting cylinders, 5- injection hydraulic cylinders, 6- barrels, 7- injection-tubes, the first injection nozzles of 8-, the first cold feed screw extruders of 9-, 10- check valves, 11- screw extruders adjust oil cylinder, The second cold feed screw extruders of 12-, the second injection nozzles of 13-.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
As shown in Figure 1, a kind of large capacity rubber injection moulding machine, including injection mechanism and clamping mechanism, clamping mechanism packet Upper beam 1 and mold 2 are included, injection mechanism includes injection seat 3, and injection seat 3 is slidably mounted on upper beam by head lifting cylinder 4 On 1, injection seat 3 is equipped with injection hydraulic cylinder 5, and the cylinder body of injection hydraulic cylinder 5 connects barrel 6, and barrel 6 is fixedly connected with injection The first injection nozzle 8 is installed in pipe 7, the one end of injection-tube 7 for connecting mold cast gate, and the first injection nozzle 8 is adapted with mould gate;
The side wall of barrel 6 connects the first cold feed screw extruder 9, the discharge port of the first cold feed screw extruder 9 with Between barrel 6 be equipped with for sizing material from the first cold feed screw extruder 9 into barrel 6 unidirectionally by check valve 10;
Upper beam 1 adjusts oil cylinder 11 by screw extruder and is slidably fitted with the second cold feed screw extruder 12, and second The discharge port of cold feed screw extruder 12 connects the second injection nozzle 13, and the second injection nozzle 13 is adapted with mould gate.
In the present embodiment, 9 and second cold feed screw extruder 12 of the first cold feed screw extruder is by pan feeding screw rod, spiral shell The compositions such as rod set, coolant jacket, check valve 10, axis joint chair, hydraulic motor and connecting flange have certain compression ratio, are equidistant Not equal deep structure, is handled using 38crmoal alloys steel making and via nitride.There is heating agent cyclic water jacket for controlling outside screw sleeve Extruder temperature processed, the draw ratio of the first cold feed screw extruder 5 are more than the draw ratio of the second cold feed screw extruder 6, tool Body, the draw ratio of the first cold feed screw extruder 5 generally uses 15:1, the draw ratio of 6 extruder of the second cold feed screw Using 12:1.
In the present embodiment, the discharging direction of the first cold feed screw extruder 9 is vertical with 6 side wall of barrel, the second cold feeding The moving direction and discharging direction of extruder 12 are in the same direction and axially vertical with injection-tube 7, and the second injection nozzle 13 is in Rectangular shaped, the second injection nozzle 13 is interior equipped with through-hole, and through-hole includes being connect with the injection port of the second cold feed screw extruder 12 First through hole part, with the second throughhole portions of mould gate cooperation and connect first through hole part and the second throughhole portions Throughhole portions are connected, the axial direction of first through hole part is axially vertical with the second throughhole portions, the cross section of first through hole part For product more than the cross-sectional area of the second throughhole portions, the vertical sectional shape for connecting throughhole portions is triangle.
In the present embodiment, the first injection nozzle 8 is equipped with through-hole in an axial direction, and through-hole is in truncated cone-shaped, and through-hole is connect with injection-tube 7 The cross-sectional area of one end is more than the cross-sectional area of one end that through-hole is connect with mold injection port.
Injection nozzle plays an important role to injection molding quality, the sizing material in barrel 6, quickly logical under considerable pressure It is acted on by shearing force when crossing injection nozzle, sizing material is made to heat up, single stage plastication of going forward side by side becomes viscous state, helps to improve sizing material Mobility in die cavity shortens vulcanization time, and the injection mouth small relative to injection rate diameter will produce high sizing material temperature, For large-capacity glue injection capsule machine, injection rate is generally 300-500ml/s, and injection nozzle aperture is 10-25mm.
In the present embodiment, barrel 6 and injection-tube 7 are the barrel 6 and injection-tube 7 by 38crmoal alloy steel makings, can be with High pressure is born, anti-spalling is good, and wearability is good, and barrel 6 and injection-tube 7 are externally provided with heating agent circulating sleeve, to control 6 He of barrel The temperature of injection-tube 7.
Large capacity rubber injection moulding machine provided by the invention, including the first cold feed screw extruder 9, the second cold feeding Screw extruder 12 and injection hydraulic cylinder 5 first use the second cold feed screw extruder when carrying out large capacity rubber injection 12 inject sizing material into mould cavity, and since mould cavity space is big at this time, pressure is small needed for injection, as much as possible can inject Sizing material passes through spiral shell at this time when required larger injection pressure cannot be injected by the second cold feed screw extruder 12 Bar extruder adjusts oil cylinder 11 and removes the second cold feed screw extruder 12, makes injection-tube 7 and first by head lifting cylinder 4 Injection nozzle 8 coordinates with mould gate, then runs the first cold feed screw extruder 9 and feeds into barrel 6, and feeding quantity is always to need It wants feeding quantity to subtract the doses that the second cold feed screw extruder 12 has added, these sizing materials is all added in barrel 6, are being injected Under the immense pressure effect of hydraulic cylinder 5, material injection in barrel 6 is entered in die cavity, feeding operation can in two steps in this way To realize large capacity rubber injection, meet existing large capacity rubber injection demand.
Large capacity rubber injection moulding machine provided by the invention is simple in structure, can be on the basis of existing rubber injection machine It is improved, difficulty of processing is low, at low cost.
The specific implementation mode of present invention described above, is not intended to limit the scope of the present invention..Any basis The various other corresponding changes and deformation that the technical concept of the present invention is made, should be included in the guarantor of the claims in the present invention It protects in range.

Claims (8)

1. large capacity rubber injection moulding machine, which is characterized in that including injection mechanism and clamping mechanism, the clamping mechanism includes Upper beam, the injection mechanism include injection seat, and the injection seat is slidably mounted on the upper beam by head lifting cylinder On, the injection seat is equipped with injection hydraulic cylinder, and the cylinder body of the injection hydraulic cylinder connects barrel, and the barrel, which is fixed, to be connected Injection-tube is connect, the first injection nozzle, first injection nozzle and mold are installed in the one end of the injection-tube for connecting mold cast gate Cast gate is adapted;
The side wall of the barrel connects the first cold feed screw extruder, the discharge port of the first cold feed screw extruder with Between the barrel be equipped with for sizing material from the first cold feed screw extruder into the barrel unidirectionally by check valve;
The upper beam adjusts oil cylinder by screw extruder and is slidably fitted with the second cold feed screw extruder, and described second is cold The discharge port of feed screw extruder connects the second injection nozzle, and second injection nozzle is adapted with mould gate.
2. large capacity rubber injection moulding machine according to claim 1, which is characterized in that the first cold feed screw squeezes The draw ratio for going out machine is more than the draw ratio of the described second cold feed screw extruder.
3. large capacity rubber injection moulding machine according to claim 2, which is characterized in that the first cold feed screw squeezes The draw ratio for going out machine is 15:1, the draw ratio of the second cold feed screw extruder is 12:1.
4. large capacity rubber injection moulding machine according to claim 1, which is characterized in that the first cold feed screw squeezes The discharging direction for going out machine is vertical with the barrel side wall.
5. large capacity rubber injection moulding machine according to claim 1, which is characterized in that second cold feed extruder Moving direction and discharging direction it is in the same direction and axially vertical with injection-tube, second injection nozzle is rectangular in shape Shape, second injection nozzle is interior to be equipped with through-hole, and the through-hole includes and the injection port of the described second cold feed screw extruder connects The first through hole part that connects, the second throughhole portions coordinated with the mould gate and it connect the first through hole part and second The connection throughhole portions of throughhole portions, the axial direction of the first through hole part axially vertical, institute with second throughhole portions The cross-sectional area for stating first through hole part is more than the cross-sectional area of second throughhole portions, and the vertical of connection throughhole portions cuts Face shape is triangle.
6. large capacity rubber injection moulding machine according to claim 1, which is characterized in that first injection nozzle is in an axial direction Equipped with through-hole, the through-hole is in truncated cone-shaped, and the cross-sectional area of one end that the through-hole is connect with injection-tube is more than through-hole and mold The cross-sectional area of one end of injection port connection.
7. large capacity rubber injection moulding machine according to claim 1, which is characterized in that first injection nozzle and second The aperture of injection nozzle is 12-25mm.
8. large capacity rubber injection moulding machine according to claim 1, which is characterized in that the barrel and injection-tube are served as reasons The barrel and injection-tube of 38crmoal alloy steel makings, the barrel and injection-tube are externally provided with heating agent circulating sleeve.
CN201810331045.5A 2018-04-13 2018-04-13 Large capacity rubber injection moulding machine Pending CN108340536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810331045.5A CN108340536A (en) 2018-04-13 2018-04-13 Large capacity rubber injection moulding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810331045.5A CN108340536A (en) 2018-04-13 2018-04-13 Large capacity rubber injection moulding machine

Publications (1)

Publication Number Publication Date
CN108340536A true CN108340536A (en) 2018-07-31

Family

ID=62954952

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810331045.5A Pending CN108340536A (en) 2018-04-13 2018-04-13 Large capacity rubber injection moulding machine

Country Status (1)

Country Link
CN (1) CN108340536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112157864A (en) * 2020-09-16 2021-01-01 扬州市职业大学(扬州市广播电视大学) Rubber injection molding machine and molding method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112157864A (en) * 2020-09-16 2021-01-01 扬州市职业大学(扬州市广播电视大学) Rubber injection molding machine and molding method

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