CN201833563U - Screwless plastic disk-type rotary injection device - Google Patents
Screwless plastic disk-type rotary injection device Download PDFInfo
- Publication number
- CN201833563U CN201833563U CN2010202545594U CN201020254559U CN201833563U CN 201833563 U CN201833563 U CN 201833563U CN 2010202545594 U CN2010202545594 U CN 2010202545594U CN 201020254559 U CN201020254559 U CN 201020254559U CN 201833563 U CN201833563 U CN 201833563U
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- injection
- disc type
- type accumulator
- nozzle
- injection ram
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Abstract
The utility model discloses a plastic screwless injection device. The material storing, injecting and pressure keeping processes of plastics are finished by utilizing the rotating motion of a piston which is placed in an annular slot on a disk and can rotate around the center of the disk. A disk-type rotary injection device comprises a disk-type material-storing cylinder, an injection piston, a supporting shaft, a nozzle and the like, wherein the annular slot is arranged on the disk of the disk-type material-storing cylinder, and the injection piston can rotate around the disk-type material-storing cylinder. The injection piston is pushed to rotate by a plastic melt entering the disk-type material-storing cylinder, so that the material-storing volume is increased to finish material storage; the injection piston is driven by an external power to rotate in the direction opposite to that when in material storage, and materials in the disk-type material-storing cylinder are pushed to be ejected from the nozzle and injected into a mould cavity; and the pressure of the mould cavity can be kept by keeping the torque of the injection piston to finish mould-cavity pressure keeping and material feeding. The injection device has the characteristics of small volume, accurate stored-material measurement, low injection energy consumption, small injection motion inertia and the like.
Description
Technical field
The utility model relates to a kind of injection-moulding plastic method and equipment thereof, particularly relates to a kind of plastic disc type rotary injection device that does not have screw rod.
Background technology
Plastic-injection moulding machine is the main process equipment of plastic shaping.The injection molding technique process comprises processes such as plasticizing, storing, injection filling mould, pressurize, cooling and die sinking eject, and wherein processes such as storing, injection filling mould, pressurize are to finish in injection device.In traditional plunger type injection device or screw arbor type injection device, material during storing (plastic melt) constantly enters the material storage tube front end, and promotes plunger or screw rod retreats along rectilinear direction, and storing is finished in the increase of storing volume; Plunger or screw rod travel forward at external force driving lower edge straight line during injection, promote material and hold the ejaculation of nozzle place to enter die cavity in the past; Plunger or screw rod keep the pressure to material under external force during pressurize, guarantee that material continues to flow into die cavity and replenishes the contraction that material produces because of cooling in the die cavity.Storing, injection and pressure maintaining period are all realized by rectilinear motion in the said process.All there are a series of shortcomings in the This move characteristics in different injection machines.In traditional fluid pressure type injection machine, plasticizing process is rotatablely moved by the fluid motor-driven screw rod, injection and pressure maintaining period hydraulic oil cylinder driving plunger or screw rod rectilinear motion.Whole plasticizing injecting device parts are many, complex structure, cost height.Especially in the screw arbor type injection machine, the rectilinear motion when a large amount of materials that plasticizing is good participate in injection behind screw rod and the check ring, movement inertia is big, frictional resistance is big, when making injection energy consumption big, injection speed and injection position control difficulty.The air line distance that retreats by the measurement screw rod during storing is measured the storing amount, because the check ring of screw front end can't be measured and be controlled with respect to the axial location of screw rod, therefore there is uncontrollable random error in the storing amount, especially when check ring and screw head, when dividing Jiao Zui (being commonly called as three smallclothes) wearing and tearing to strengthen, the storing precision is lower.Wearing and tearing between three smallclothes also cause the check ring plugging effect to reduce simultaneously, and feed back when injection makes the fluctuation of injection volume and injection pressure.In full electric injection molding machine, injection movement often is converted into rotatablely moving of servomotor by ball screw the straight line injection movement of injection piston or screw rod, except existing the identical problem with above-mentioned hydraulic injection machine, also have other problem: 1. the power train rotary inertia is bigger, injection speed and Position Control difficulty; 2. ball screw is easy to wear; 3. noise is big; 4. equipment cost and maintenance are high.In the supporting injection machine that forms of the described new blade plasticizing apparatus of patent Z1200810026054.X, injection barrel and plunger can not plastify the one-line layout of extrusion device with blade, cause whole plasticizing injecting device complex structure, and volume is bigger.
The utility model content
The purpose of this utility model is to provide a kind of plastic disc type rotary injection method that does not have screw rod, shortcoming such as be to overcome storing in the prior art, injection and pressure maintaining period that rectilinear motion complex structure, cost height, the storing measuring accuracy brought are low, injection energy consumption height, injection movement inertia are big.
The purpose of this utility model also is to provide a kind of plastic disc type rotary injection device that does not have screw rod.
Two kinds of plastic disc type rotary injection methods that the utility model provides all are to utilize to place cannelure and can rotate around the piston that disc centre is rotated realization storing, injection and pressure maintaining period on the disk.
But two kinds of disc type rotary injection devices that the utility model provides are made up of injection ram, bolster and the nozzle etc. of the disc type accumulator drum formula accumulator rotation that cannelure is set on the disk.The plastic melt that enters the disc type accumulator promotes the injection ram rotation, the storing volume is increased finish storing; Rightabout rotation when driving injection ram and do with storing by external impetus promotes material in the disc type accumulator and penetrates from nozzle and inject die cavity; Keep the torque of injection ram can keep cavity pressure, finish die cavity pressurize and material feeding.The rotatablely moving of injection ram can pass through that motor, hydraulic motor equal power device directly drive or by above-mentioned power set through actuator drives.
The plasticizing apparatus that plastic melt is provided during storing can be screw plasticizing apparatus, plunger type plasticizing apparatus or vane type plasticizing apparatus.
The utility model compared with prior art has following advantage:
1, storing, injection and pressurize are for rotatablely moving, and injection device is simple in structure, volume is little, low cost of manufacture;
2, storing measurement change air line distance is measured as angular surveying, and certainty of measurement is higher, and does not have the relative motion wearing terrain in the injection ram, and the storing metering is more accurate;
Do not have the relative motion wearing terrain in 3 injection rams, the shutoff material is simple during injection, and material from leakage is little, and injection volume and injection pressure are more stable;
4,, moving component is few during injection, and does not comprise the good material of not plasticizing, and rubbing surface is little, and frictional resistance is little during injection, and the injection energy consumption reduces;
Moving component is few when 5, injecting, and quality is low, and movement inertia is little, makes injection speed and Position Control more accurate.
Description of drawings
Fig. 1 is the structural representation of the plastic disc type rotary injection device of embodiment 1 no screw rod;
Shown in the figure: 1 is that injection ram, 2 is that motor, 3 is that bolster, 4 is that disc type accumulator, 5 is that nozzle, 6 is that control valve and 7 is an adpting flange;
Fig. 2 is the structural representation of the plastic disc type rotary injection device of embodiment 2 no screw rods;
Shown in the figure: 1 is screw rod, and 2 is barrel, and 3 is back shaft, and 4 is injection ram, and 5 is that key, 6 is the disc type accumulator, 7 are the metering heating collar, and 8 is the nozzle heating collar, and 9 is nozzle, and 10 is fixed flange, 11 is driven gear, and 12 is driving gear, 13 motors, and 14 is reverse stopping ball.
Fig. 3 is that the E-E of Fig. 2 is to profile.
Fig. 4 is the runner schematic diagram of back shaft 3.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described, but the claimed scope of the utility model is not limited to the scope of embodiment statement.
Shown among the figure 1, the plastic disc type rotary injection device comprises injection ram 1, motor 2, bolster 3, disc type accumulator 4, nozzle 5, control valve 6 and adpting flange 7; Disc type accumulator 4 has the groove of annular, and injection ram 1 is enclosed within on the bolster 3, is connected with motor 2, and the piston head of injection ram 1 places cannelure, can do rotatablely moving of certain angle in cannelure around disc type accumulator 4 centers.Disc type accumulator 4 circumferential edges are provided with nozzle 5, and the duct of nozzle 5 is communicated with cannelure; Also be provided with the duct on the circumferential edges of disc type accumulator 4, this duct is connected with adpting flange 7, and this duct is provided with control valve 6.
The course of work of present embodiment is:
During storing, open control valve 6, the plastic melt that plasticizing is good enters disc type accumulator 4 through adpting flange 7, and melt pressure promotes injection ram 1 and turns clockwise, and finishes storing when the storing volume increases to setting value.
During injection, closed control valve 5 drives injection rams 1 by motor 2 and is rotated counterclockwise, and piston head promotes material in the disc type accumulator 4 and penetrates from nozzle 5 and inject die cavity.
During pressurize, external impetus 2 keeps the torque of injection ram 1 to keep cavity pressure, finishes the material feeding.To enter and penetrate the order of disc type accumulator be " first-in last-out " to plastic melt in the said process.
Shown in Fig. 2,3, the plastic disc type rotary injection device of no screw rod comprises back shaft 3, injection ram 4, key 5, disc type accumulator 6, metering heating collar 7, nozzle heating collar 8, fixed flange 10, driven gear 11, driving gear 12, motor 13 and reverse stopping ball 14.Injection ram 4 peripheries are provided with disc type accumulator 6, fixed flange 10 and driven gear 11 successively; Driven gear 11 is connected with injection ram 4 by key 5, driven gear 11 and driving gear 12 engagements, and driving gear 12 is connected with the output shaft of motor 13.Back shaft 3 is positioned at injection ram 4, is provided with as shown in Figure 4 shaft orientation flowing channel 31, radial flow path 32 and circumferential runner 33 in the back shaft 3, and back shaft 3 one ends are connected with barrel 2, and the other end of back shaft 3 is connected with disc type accumulator 6; Be provided with screw rod 1 in the cavity of barrel 2, shaft orientation flowing channel 31 1 ends of back shaft 3 are communicated with the cavity of barrel 2, and the other end of shaft orientation flowing channel 31 is communicated with the circumferential runner 33 that is arranged on back shaft 3 surfaces by radial flow path 32; Disc type accumulator 6 front ends are connected with nozzle 9, and disc type accumulator 6 rear ends are connected with fixed flange 10; The periphery of disc type accumulator 6 and nozzle 9 is respectively equipped with metering heating collar 7 and nozzle heating collar 8; Injection ram 4 is a circulus, and circle is enclosed within on the back shaft 3 in it, at the bossed piston head of its cylindrical, places the cannelure 62 between injection ram 4 and the disc type accumulator 6.Injection ram 4 can be around disc type accumulator 6 centers 62 be done the rotatablely moving of certain angle scope (be not the complete cycle motion, angular range is spent between 350 degree 0) in cannelure.Injection ram and piston head thereof have piston runner 41, the cannelure that piston runner 41 is communicated with between circumferential runner 33 and injection ram 4 and the disc type accumulator 6, and reverse stopping ball 14 is embedded in the piston runner 41.Be provided with injection flow passage 61 in the disc type accumulator 6, injection flow passage 61 1 ends are communicated with cannelure between injection ram 4 and the disc type accumulator 6 at the B point, and the other end of injection flow passage 61 is communicated with runner in the nozzle 9.The design feature of the plastic disc type rotary injection device of this no screw rod is that lines such as plasticizing apparatus, injection device and nozzle are arranged compact conformation.The arrow direction is the flow direction of plastic melt among the figure.
(fusion plastification process and injection and pressure maintaining period are irrelevant) entered the storing stage after screw rod 1 was finished the plastics fusion plastification.During storing, screw rod 1 will plastify the center flow channels that good plastic melt is squeezed into back shaft 3, the radial flow path shown in Figure 4 of flowing through 31 arrives radial flow path 31 and circumferential runner 33 junction A point (Fig. 2, shown in Fig. 3), the circumferential runner 33 of back shaft 3 of flowing through again flows to arrive and goes forward side by side into the piston runner 41 of injection ram 4, push reverse stopping ball 14 then open, enter in the annular stock chest 62 between injection ram 4 and the disc type accumulator 6, arrive the B point of injection flow passage 61 in the disc type accumulator 6 then, because the throttling action that B is ordered, material is assembled in annular stock chest 62, along with material increases, material pressure increases, and promotes injection ram 4 and turns clockwise, the storing volume increases, when injection ram turns to an angle (this angle less than 350 degree), the material in annular stock chest 62 reaches the injection volume that needs, and storing is finished.
During injection, motor 13 drives driving gear 12, and slows down by driven gear 11, makes driven gear 11 drive injection ram 4 counterclockwise quick rotation one angles, and the material in the piston runner 41 of injection ram 4 flows backwards, and promotes reverse stopping ball 14 motions, the shutoff runner.Injection ram 4 promotes plastic melt by B point (shown in Fig. 2, Fig. 3), and penetrates back injection die cavity through the runner of injection flow passage 61 in the disc type accumulator 6 and nozzle 9.
During pressurize, motor 13 holding torques, make injection ram 4 front ends continue keep residuing in the pressure of the material in the annular stock chest 62 of disc type accumulator 6, the runner that this pressure can make material continue injection flow passage 61 and nozzle 9 enters die cavity, replenishes because the material that the material cooling causes in the die cavity shrinks.
The order that material entered and penetrated accumulator in the said process is " first in first out ".
Two kinds of plastic disc type rotary injection devices of the foregoing description 1 and embodiment 2 correspondences than prior art, be characterized in storing, the injection and pressure maintaining period all be to finish by the rotation of injection ram.In embodiment 1, injection ram 1 can rotate in the cannelure of disc type accumulator 4 around bolster 3,2 needs of external power supply provide rotary power can finish injection and pressurize action to injection ram, do not need to adopt motion conversion element such as oil cylinder, ball screw as prior art, structure is simpler, movement inertia is littler, is that the motion control of injection is simpler, injects more accurate.In embodiment 2, except that advantage with the foregoing description 1, can also be with plasticizing apparatus (screw rod 1, barrel 2), one lines such as injection device (back shaft 3, injection ram 4, key 5, disc type accumulator 6, metering heating collar 7, nozzle heating collar 8, fixed flange 10, driven gear 11, driving gear 12, motor 13, reverse stopping ball 14) and nozzle 9 are arranged, more compact structure, and the order that material entered and penetrated disc type accumulator 6 is first in first out, has avoided the inhomogeneous quality of item that brings of the time of staying of material to descend.
Claims (5)
1. plastic disc type rotary injection device that does not have screw rod, but it is characterized in that constituting by injection ram, bolster and the nozzle of the disc type accumulator drum formula accumulator rotation that cannelure is set on the disk.
2. device according to claim 1, it is characterized in that injection ram rotatablely move by motor, hydraulic motor directly drive or by above-mentioned power set through actuator drives.
3. device according to claim 1 and 2 provides the plasticizing apparatus of plastic melt when it is characterized in that also comprising storing, adopt screw plasticizing apparatus, plunger type plasticizing apparatus or vane type plasticizing apparatus.
4. device according to claim 3 is characterized in that comprising injection ram, motor, bolster, disc type accumulator, nozzle, control valve and adpting flange; The disc type accumulator has the groove of annular, and injection ram is enclosed within on the bolster, is connected with motor, and the piston head of injection ram places cannelure, can do rotatablely moving of certain angle in cannelure around disc type accumulator center; Disc type accumulator circumferential edges is provided with nozzle, and the duct of nozzle is communicated with cannelure; Also be provided with the duct on the circumferential edges of disc type accumulator, this duct is connected with adpting flange, and this duct is provided with control valve (6);
5. device according to claim 3 is characterized in that comprising back shaft, injection ram, key, disc type accumulator, metering heating collar, nozzle heating collar, fixed flange, driven gear, driving gear, motor and reverse stopping ball; The injection ram periphery is provided with disc type accumulator, fixed flange and driven gear successively; Driven gear is connected with injection ram by key, driven gear and driving gear engagement, and driving gear is connected with the output shaft of motor; Back shaft is positioned at injection ram, is provided with shaft orientation flowing channel, radial flow path and circumferential runner in the back shaft, and back shaft one end is connected with barrel, and the other end of back shaft is connected with the disc type accumulator; Be provided with screw rod in the cavity of barrel, shaft orientation flowing channel one end of back shaft is communicated with the cavity of barrel, and the other end of shaft orientation flowing channel is communicated with the circumferential runner that is arranged on the back shaft surface by radial flow path; Disc type accumulator front end is connected with nozzle, and disc type accumulator rear end is connected with fixed flange; The periphery of disc type accumulator and nozzle is respectively equipped with metering heating collar and nozzle heating collar; Injection ram is a circulus, and circle is enclosed within on the back shaft in it, at the bossed piston head of its cylindrical, places the cannelure between injection ram and the disc type accumulator; Injection ram can be done rotatablely moving of certain angle scope around disc type accumulator center in cannelure; Injection ram and piston head thereof have the piston runner, and the piston runner is communicated with the cannelure between circumferential runner and injection ram and the disc type accumulator, and reverse stopping ball is embedded in the piston runner; Be provided with injection flow passage in the disc type accumulator, injection flow passage one end is communicated with cannelure between injection ram and the disc type accumulator, and the other end of injection flow passage is communicated with runner in the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202545594U CN201833563U (en) | 2010-07-09 | 2010-07-09 | Screwless plastic disk-type rotary injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202545594U CN201833563U (en) | 2010-07-09 | 2010-07-09 | Screwless plastic disk-type rotary injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201833563U true CN201833563U (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202545594U Expired - Lifetime CN201833563U (en) | 2010-07-09 | 2010-07-09 | Screwless plastic disk-type rotary injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201833563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920547A (en) * | 2010-07-09 | 2010-12-22 | 华南理工大学 | Screw-free plastic disc type rotary injection method and device |
| CN108673844A (en) * | 2018-06-22 | 2018-10-19 | 北京化工大学 | It is a kind of passively to move back core formula layering injection molding |
-
2010
- 2010-07-09 CN CN2010202545594U patent/CN201833563U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920547A (en) * | 2010-07-09 | 2010-12-22 | 华南理工大学 | Screw-free plastic disc type rotary injection method and device |
| CN101920547B (en) * | 2010-07-09 | 2013-04-17 | 华南理工大学 | Screw-free plastic disc type rotary injection method and device |
| CN108673844A (en) * | 2018-06-22 | 2018-10-19 | 北京化工大学 | It is a kind of passively to move back core formula layering injection molding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110518 Effective date of abandoning: 20130417 |
|
| RGAV | Abandon patent right to avoid regrant |