CN1370671A - Polymer melt vibrating formation unit - Google Patents
Polymer melt vibrating formation unit Download PDFInfo
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- CN1370671A CN1370671A CN 01107187 CN01107187A CN1370671A CN 1370671 A CN1370671 A CN 1370671A CN 01107187 CN01107187 CN 01107187 CN 01107187 A CN01107187 A CN 01107187A CN 1370671 A CN1370671 A CN 1370671A
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Abstract
The polymer melt vibrating formation unit includes a melt vibrating cavity with an end connected to a nozzle and the other end connected to a piston; and a piston, in which there is a vibrating liver with one end connected to one vibrating shuttle and the other end connected to a vibrating mechanism. The piston has one end connected to the piston cylinder and the other end matched with the vibrating cavity to push melt for passing through the nozzle and formation inside the mold cavity. The present invention has the combined vibration effect of shearing vibratino and pressurized vibration, changeable vibration mode and adjustable vibration parameter and is suitable for industrial production.
Description
The present invention relates to moulding of a kind of polymer melt vibration injection or extrusion molding, belong to polymer processing field.
Introduce rheological characteristic and the mouldability that vibration can change polymer melt in the forming polymer process, different vibrating devices can produce different effects and effect.The vibration of using in vibration moulding is divided into the melt scissoring vibration, melt pressure vibration and ultrasonic vibration three major types.At present, the polymer melt vibration is to adopt single mode of vibration, Chinese patent 90101034.0,92103639.6.Reported the electric and magnetic oscillation mode, this mode of vibration is difficult to the amplitude and the frequency of accurately control vibration, and because polymer malt viscosity is bigger, melt may produce hysteresis, its vibration frequency and electromagnetic frequency are inconsistent, and the actual frequency of melt vibration and amplitude are difficult for the adjusting of measurement; The hydraulic system vibration can produce bigger vibration force, but realizes the system cost height of vibration, is subjected to the restriction of hydraulic system self, and its vibrative frequency is very low; The characteristics of ultrasonic vibration are that vibration frequency is very high, the structure of vibration source is smaller and more exquisite, and the frequency of vibration is easy to regulate, but amplitude is less.
The objective of the invention is provides a kind of polymer melt vibrating formation unit at the deficiencies in the prior art, be characterized in adopting the vibration shuttle to make the injection melt produce the vibrotechnique of the low-frequency vibration mode that back and forth flows, can accurately control the amplitude and the frequency of vibration, improve the rheological characteristic of forming polymer and improve mouldability, thereby enhance productivity and Forming Quality.
The present invention is realized by following technical measures
Polymer melt vibrating formation unit is that melt vibration cavity (5) one ends connect shower nozzle (2), the vibration cavity other end connects piston (6), establish vibrating arm (8) in the piston (6), vibrating arm (8) one ends connect vibration shuttle (3), the other end connects vibrating mechanism (9), piston (6) one ends connect piston cylinder (7), and the other end cooperates the promotion melt to pass through shower nozzle (2) to the interior moulding of die cavity (1) with vibration cavity.
The outer heater (4) that connects of vibration cavity (5), vibration cavity is established the temperature, pressure measuring probe in (5), the temperature, pressure measuring probe is connected with temperature control equipment (12) by temperature, pressure measurement mechanism (11), and temperature, pressure measurement mechanism (11) is connected with pressure control device and injection control apparatus (13).
Shower nozzle (2) top connects polymer plasticizing apparatus (14), shower nozzle (2) one STHs and die cavity (1) conducting.
Be provided with some recessed roads (10) above the vibration shuttle (3).
The present invention realizes like this, polymer enters shower nozzle (2) after plasticizing, flow to the recessed road (10) of vibration cavity (5) and vibration shuttle, when vibrating arm travels forward, force melt in the vibration cavity by recessed road with vibrate slit flow between shuttle and the vibration cavity to the rear portion.Otherwise, when vibrating arm moves backward in the past, force melt in the vibration cavity by recessed road and slit flow to the front portion, thereby make the polymer melt in the vibration cavity be subjected to strong shearing; Simultaneously, when vibrating arm travelled forward, certain effective volume was compressed melt in the vibration cavity that will account for, thereby system pressure raises; When vibrating arm moves backward, with " release " its volume that occupies, increase the actual dischargeable capacity of vibration cavity, the pressure of system reduces, and forms pressure vibration.Adjusting variable-speed motor rotating speed can accurately change the frequency of the vibration shuttle of slider-crank mechanism driving; Regulate the amplitude of slider-crank mechanism, can accurately change the amplitude of vibration shuttle; The diameter that changes vibrating arm can change the size that the vibration cavity dischargeable capacity changes, thereby changes the amplitude of pressure vibration; Change the same frequency that accurately changes pressure vibration of variable-speed motor rotating speed.Start injection ram and push ahead, melt enters cavity forming, in the injection moulding stage, can continue to keep and stop vibration.
Concrete structure of the present invention is provided by following examples and accompanying drawing
Fig. 1 is the polymer melt vibrating formation unit structural representation
1 mould, 2 shower nozzles, 3 vibration shuttles, 4 heaters, 5 vibration cavity, 6 pistons, 7 hydraulic cylinders, 8 vibrating arms, 9 vibrating mechanisms, 11 temperature, pressure measurement mechanisms, 12 temperature control equipments, 13 pressure control devices, 14 plasticizing apparatus
Fig. 2 is vibration tatting structure schematic diagram
10 recessed roads
Fig. 3 is the side view of vibration shuttle
Embodiment
Below by embodiment the present invention is specifically described; be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to above-mentioned summary of the invention.
Polymer melt vibrating formation unit has simple in structure, as Figure 1-3.It connects shower nozzle 2, vibration cavity other end connection piston 6 by melt vibration cavity 5 one ends, establishes vibrating arm in the piston 6; Shuttle 3 is vibrated in the connection of vibrating arm 8 one ends, and vibrating arm 8 other ends connect vibrating mechanism 9, and piston 6 one ends connect piston cylinder 7, and the other end cooperates the promotion melt to pass through shower nozzle 2 to die cavity 1 interior moulding with vibration cavity.The vibration cavity 5 outer heaters 4 that connect are established temperature probe in the vibration cavity 5, and temperature probe is connected with temperature control equipment 12 by temperature, pressure measurement mechanism 11, and temperature, pressure measurement mechanism 11 is connected with pressure control device and injection control apparatus 13.Connect polymer plasticizing apparatus 14, shower nozzle 2 opposite side perforates and die cavity (1) conducting on the shower nozzle 2.Be provided with some recessed roads above the vibration shuttle 3, make melt in vibration cavity, produce scissoring vibration and pressure vibration.
The present invention has following advantage:
1. polymer forms the combination vibration field of scissoring vibration and pressure vibration in vibration cavity.
2. mode of vibration can change, and vibration parameters can be regulated.
3. injection direction is consistent with direction of vibration, and the injection moulding stage can keep or stop vibration.
4. combination vibration technology is easy to suitability for industrialized production.
Claims (4)
1. polymer melt vibrating formation unit, contain mould, vibration cavity, piston and hydraulic cylinder, it is characterized in that melt vibration cavity (5) one ends connect shower nozzle (2), vibration cavity (5) other end connects piston (6), establish vibrating arm (8) in the piston (6), vibrating arm (8) one ends connect vibration shuttle (3), vibrating arm other end continuous shaking mechanism (9), piston (6) one ends connect piston cylinder (7), and the piston other end cooperates the promotion melt to pass through shower nozzle (2) to the interior moulding of die cavity (1) with vibration cavity.
2. according to the described polymer melt vibrating device of claim 1, it is characterized in that the outer heater (4) that connects of vibration cavity (5), vibration cavity is established the temperature, pressure measuring probe in (5), the temperature, pressure measuring probe is connected with temperature control equipment 12 by temperature, pressure measurement mechanism (11), and device for pressure measurement is connected with pressure control device and injection device (13).
3. according to the described polymer melt vibrating formation unit of claim 1, it is characterized in that shower nozzle (2) top connects polymer plasticizing apparatus (14), shower nozzle (2) one STHs and die cavity (1) conducting.
4. according to the described polymer melt vibrating formation unit of claim 1, it is characterized in that vibrating shuttle (3) above be provided with some recessed roads (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011071877A CN1164409C (en) | 2001-02-26 | 2001-02-26 | Polymer melt vibrating formation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011071877A CN1164409C (en) | 2001-02-26 | 2001-02-26 | Polymer melt vibrating formation unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1370671A true CN1370671A (en) | 2002-09-25 |
| CN1164409C CN1164409C (en) | 2004-09-01 |
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ID=4656137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011071877A Expired - Fee Related CN1164409C (en) | 2001-02-26 | 2001-02-26 | Polymer melt vibrating formation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164409C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921391A (en) * | 2014-04-02 | 2014-07-16 | 四川大学 | Vibration injection molding machine and application thereof |
| CN106956406A (en) * | 2017-04-28 | 2017-07-18 | 青岛科技大学 | A kind of rubber dynamic injection forming apparatus and method |
-
2001
- 2001-02-26 CN CNB011071877A patent/CN1164409C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921391A (en) * | 2014-04-02 | 2014-07-16 | 四川大学 | Vibration injection molding machine and application thereof |
| CN106956406A (en) * | 2017-04-28 | 2017-07-18 | 青岛科技大学 | A kind of rubber dynamic injection forming apparatus and method |
| CN106956406B (en) * | 2017-04-28 | 2022-09-06 | 青岛科技大学 | Dynamic rubber injection molding device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1164409C (en) | 2004-09-01 |
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