CN104527023A - Extruder for preventing screw from being twisted off - Google Patents
Extruder for preventing screw from being twisted off Download PDFInfo
- Publication number
- CN104527023A CN104527023A CN201410839464.1A CN201410839464A CN104527023A CN 104527023 A CN104527023 A CN 104527023A CN 201410839464 A CN201410839464 A CN 201410839464A CN 104527023 A CN104527023 A CN 104527023A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- reduction box
- extruder
- electromagnetic clutch
- motor
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/96—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an extruder for preventing screw from being twisted off. The extruder comprises a motor, a reduction box and a screw, wherein the motor is connected with the reduction box; the reduction box is connected with the screw; the motor is connected with the reduction box through a torque-limiting protection device; the torque-limiting protection device is correspondingly arranged according to the tolerable torque strength of the screw; when the torque born by the screw is overlarge and the rotating speed is reduced, the torque-limiting protection device runs idly, and the screw stops running, so that the rupture phenomenon caused by strong torsion action on the screw is avoided.
Description
Technical field
The present invention relates to extruder apparatus field, particularly relate to a kind of anti-screw rod and twist off extruder.
Background technology
In traditional plastic industry, screw rod shaft coupling is all directly connected on motor and reduction box.This screw rod shaft coupling is directly delivered to the kinetic energy of motor above screw rod by reduction box, drive screw turns.This shaft coupling adopts the mode of directly driving; motor has much kinetic energy; just directly transmit how much kinetic energy to screw rod; and at some time; frayed screw rod is easily by the material locking or stuck by foreign matter of condensing; if screw extruder lacks good protection; powerful driving force exceedes the compression capability of screw rod; easily cause the fracture of screw rod; and create powerful resistance during screw deadlocking; except the major injury causing screw rod, also can scratch machine barrel, the scuffing of machine barrel is difficult to repair, and this often results in greater loss.
Application number be 201320880344.7 Chinese patent " a kind of anti-screw rod of double screw extruder twists off adapter sleeve " disclose a kind of when Motor torque power is greater than the torsional forces of adapter sleeve adapter sleeve fracture anti-screw rod twist off adapter sleeve, be specially: adapter sleeve two ends are connected with screw rod with reduction gearbox output shaft respectively, inner surface has the groove corresponding to screw rod, the outer surface of described adapter sleeve has the notch of at least one, and this adapter sleeve peak torque power is between the normal torsional forces of screw rod and peak torque power.Described notch shape is V-type groove, arc-shaped slot or dovetail groove, described novel cell mouth-shaped, quantity, the equal adjustable of width is to adapt to different screw torque power, play the effect of protection screw rod and branch mailbox, when Motor torque power is greater than the torsional forces of adapter sleeve, adapter sleeve ruptures, screw rod quits work, protection screw rod and branch mailbox are subject to unexpected failure, the weak point of this utility model is: on adapter sleeve, be provided with notch with the torsional forces making adapter sleeve maximum between the normal torsional forces of screw rod and peak torque power, this torsional forces is more difficult to be controlled within the scope of this, and each adapter sleeve is due to the reason of technique, the notch offered can be slightly different, this causes the peak torque power of the adapter sleeve of each there are differences, when adapter sleeve breaks, because machine is relatively-stationary, the operation more complicated that the adapter sleeve broken is pulled down, the adapter sleeve disconnected can not reuse, cause waste.
Application number be 200920042838.1 Chinese patent " cross torque protection shaft coupling " disclose a kind of shaft coupling that during energy, clutch block is wherein separated in time when bearing axle resistance increases suddenly, specifically comprise: line shaft, bearing axle, the upper clutch block be connected with line shaft and the lower clutch block be connected with bearing axle, also comprise in driving, many the stage clips that lower clutch block is opened or closed, the proximity switch that also can control line shaft work or stopping close with upper clutch block, described lower clutch block is fixed on bearing axle by key and nut, the upper end of lower clutch block is uniform arranges many clutch pawls, described bearing axle upper end is provided with adjusting nut and pressure pad, three is connected by screw fixing.Served as torque protection shaft coupling when normally working, upper clutch block, by upper and lower clutch block helicoid, is delivered to lower clutch block moment of torsion, bearing axle work.Work as device fails, bearing axle resistance increases suddenly, and when exceeding nominal torque, upper clutch block rises along helicoid, and upper and lower clutch pawl departs from mutually; Meanwhile, the belt flange on upper clutch block cylindrical departs from proximity switch, and proximity switch sends signal, system alarm and stopping, and its weak point is: shaft coupling transmitted power is little, and form comparatively complicated, the probability broken down is comparatively large, and maintenance is inconvenient.
Summary of the invention
In view of this; the object of the invention is to overcome the deficiencies in the prior art; there is provided that a kind of structure is simple, the anti-screw rod of torsion fracture resistant successful twists off extruder; solve and cause screw rod to exceed compressive region when traditional shaft coupling directly drives and the problem ruptured; the present invention can disconnect the moment of torsion passing to screw rod in time when screw rod is subject to excessive resistance, protection screw rod is from destruction.
In order to solve the problems of the technologies described above, the present invention adopts following scheme to realize:
A kind of anti-screw rod twists off extruder, and comprise motor, reduction box and screw rod, described motor is connected with reduction box, and described reduction box is connected with screw rod, and described motor is connected with reduction box by limited torque protective device.
Existing extruder normally motor is directly connected with reduction box; this mode of directly driving is when screw rod is subject to larger resistance; screw rod easily twists off; and in the present invention; limited torque protective device is provided with between motor and reduction box; motor is connected with limited torque protective device; reduction box is connected with limited torque protective device; limited torque protective device provides power by motor; when motor drives limited torque protective device; limited torque protective device can be delivered to moment of torsion on reduction box, and then reduction box drive screw turns.Limited torque protective device is arranged accordingly according to the torque of bearing during screw rod normal rotation; when when screw rod bears excessive resistance, motor still transmits power to screw rod; screw rod bears excessive torque power and rotating speed reduces; limited torque protective device dallies; screw rod shuts down; avoid screw rod and be subject to strong torsional forces effect, this avoid motor straight and connected screw rod shaft coupling kinetic energy is delivered on screw rod by reduction box, thus better prevent screw rod from rupturing.
Described limited torque protective device comprises generator and electromagnetic clutch; the power intake of described electromagnetic clutch is connected with the rotating shaft of motor; clutch end is connected with the power input shaft of reduction box; the rotating shaft of described generator is driven by the power input shaft of reduction box; the power output end of described generator is connected with the lead-out wire of electromagnetic clutch, and the lead-out wire of described electromagnetic clutch is connected with external powering device simultaneously.
Electric machine rotation drives electromagnetic clutch rotate thus moment of torsion is passed to screw rod, when system operates, the axis of rotation of the power input shaft drive electrical generators of reduction box, generator rotation also generates electricity, when system malfunctions, screw speed reduction causes reduction box rotating speed to reduce, thus causes generator speed to decline thereupon, this process generator system for tracking operates and operates, and is a kind of dynamic operation.When system is in normal state, what generating function continued powers to electromagnetic clutch, electromagnetic clutch is in closure state, the moment of torsion of motor just can be delivered in screw rod always, when screw rod is subject to resistance increase, its rotating speed decreases, after the rotating speed reduction of screw rod, the reduction box rotating speed of drive electrical generators running also declines thereupon, the electric current that generator produces also decreases, the undercurrent of electromagnetic clutch is supplied to be in closure state to make electromagnetic clutch, now electromagnetic clutch is separated in time, the moment of torsion of motor is not delivered in screw rod, screw rod avoids and ruptures because being subject to excessive moment of torsion.The rotating speed of screw rod when normally running according to extruder, select suitable generator and electromagnetic clutch, because generator is relative to much smaller motor, so when reduction box power input shaft drive electrical generators, the resistance that generator brings to system is negligible, and when when screw rod is subject to resistance, rotating speed reduces, can be reflected to rapidly in generator and electromagnetic clutch, whole process speed is fast without retardation, can accomplish summary responses, protect screw rod preferably, described electromagnetic clutch is connected with external powering device simultaneously, be specially, before extruder start, first external powering device is connected, powered to electromagnetic clutch by external powering device, now electromagnetic clutch is in closure state, starter motor thereupon, because electromagnetic clutch is in closure state after connection externally fed, the moment of torsion of extruder running rear motor can be delivered in screw rod, after extruder operates steadily, cut off the connection of electromagnetic clutch and external powering device, but therefore electromagnetic clutch can not be separated, because before the connection also not cutting off electromagnetic clutch and external powering device, the power input shaft of reduction box has driven the running of generator, generating function continued power is to electromagnetic clutch, so when cutting off the connection between electromagnetic clutch and external powering device, electromagnetic clutch still can be in closure state, extruder still can even running, when extruder is subject to the resistance drop slow-speed of revolution, be reacted to immediately in generator, its reduce simultaneously rotating speed make the electricity of supply electromagnetic clutch be not enough to maintain electromagnetic clutch be in closure state, because the connection of now electromagnetic clutch and external powering device is in off-state, so electromagnetic clutch can be separated in time when generator powered deficiency, such technical staff again again can start shooting after solution screw rod fault, generator is connected with the lead-out wire of electromagnetic clutch with electromagnetic clutch simultaneously, is convenient to power to electromagnetic clutch respectively, controls separately the closed of electromagnetic clutch and released state.
The power input shaft of described reduction box and the rotating shaft of generator carry out transmission by arranging drive.
The running of the direct drive electrical generators of drive, according to extruder need select suitable generator and electromagnetic clutch, because generator is relative to much smaller motor, so when reduction box power input shaft running drive electrical generators, the resistance that system is subject to is negligible.
Preferably, described drive is belt pulley.
Described limited torque protective device is also provided with the housing for coated electromagnetic clutch and generator, and described housing is provided with louvre.
Housing is provided with perforate and is convenient to internal heat dissipating; Arranging of housing can play safeguard protection effect, more can reduce noise; Preferably, in order to avoid device connects the excessive generation causing vibration problems of span, bearing can play support effect to device is set at housing perforation place, plateau when effective assurance device runs.
Described housing is also provided with heat abstractor.Heat abstractor can ensure the normal operating conditions of electromagnetic clutch to greatest extent, coordinates the louvre of housing, internal gas flow can be made to form convection current, further improve radiating effect.
Preferably, described heat abstractor is arranged on top, and just to electromagnetic clutch.
Preferably, described heat abstractor is radiator fan.
Compared with prior art, the present invention has following beneficial effect: limited torque protective device is subject to disconnecting the moment of torsion passing to screw rod in time when resistance is excessive at screw rod, and whole process is rapidly without retardation; Whole limited torque protective device is interconnected by all parts and forms, and realizes modularization, and each parts are prior art, and structure is simple; When limited torque protective device breaks down, be convenient to maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is limited torque protection device partial enlarged drawing.
Detailed description of the invention
In order to allow those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, a kind of anti-screw rod twists off extruder, comprises motor 1, reduction box 3 and screw rod 4, and described motor 1 is connected with reduction box 3, and described reduction box 3 is connected with screw rod 4, and described motor 1 is connected with reduction box 3 by limited torque protective device 2.
As shown in Figure 2; described limited torque protective device 2 comprises electromagnetic clutch 22 and generator 24; the power intake 222 of described electromagnetic clutch 22 is connected with the rotating shaft of motor 1; clutch end 223 is connected with the power input shaft 23 of reduction box 3; described generator 24 is driven by the power input shaft 23 of reduction box 3; and the power output end 26 of generator 24 is connected with the lead wire outlet 221 of electromagnetic clutch 22, described external powering device 28 is connected with lead wire outlet 221 simultaneously.
The power input shaft 23 of described reduction box and the rotating shaft of generator 24 are respectively equipped with belt pulley, and reduction box power input shaft 23 drive electrical generators 24 operates.
Described limited torque protective device also comprises the housing 21 being provided with louvre, described housing 21 is provided with the bearing 25 of supporting shaft.
Described housing 21 is provided with radiator fan 27.
The operation principle that anti-screw rod twists off extruder is: before extruder start, first external powering device 28 is connected, power to electromagnetic clutch 22 by external powering device 28, now electromagnetic clutch 22 is in closure state, starter motor 1 thereupon, because electromagnetic clutch 22 is in closure state after connection externally fed, the moment of torsion of extruder running rear motor 1 can be delivered in screw rod 4, after extruder operates steadily, cut off the connection of electromagnetic clutch 22 and external powering device 28, but therefore electromagnetic clutch 22 can not be separated, because before the connection also not cutting off electromagnetic clutch 22 and external powering device 28, the power input shaft 23 of the reduction box 3 in limited torque protective device has driven the running of generator 24, generator 24 energy continued power is to electromagnetic clutch 22, so when cutting off the connection between electromagnetic clutch 22 and external powering device 28, electromagnetic clutch 22 still can be in closure state, extruder still can even running, when extruder is subject to the resistance drop slow-speed of revolution, be reacted in generator 24 immediately, it reduces rotating speed simultaneously makes the electricity of supply electromagnetic clutch 22 be not enough to maintain it to be in closure state, because now electromagnetic clutch 22 is in off-state with the connection of external powering device 28, so electromagnetic clutch 22 can be separated timely when generator 24 electricity shortage, technical staff can start shooting after solving screw rod 4 fault again.
Above-described embodiment is only wherein specific implementation of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (7)
1. anti-screw rod twists off an extruder, comprises motor, reduction box and screw rod, and described motor is connected with reduction box, and described reduction box is connected with screw rod, it is characterized in that, described motor is connected with reduction box by limited torque protective device.
2. the anti-screw rod of one according to claim 2 twists off extruder; it is characterized in that; described limited torque protective device comprises generator and electromagnetic clutch; the power intake of described electromagnetic clutch is connected with the rotating shaft of motor; clutch end is connected with the power input shaft of reduction box; the rotating shaft of described generator is driven by the power input shaft of reduction box; the power output end of described generator is connected with the lead-out wire of electromagnetic clutch, and the lead-out wire of described electromagnetic clutch is connected with external powering device simultaneously.
3. the anti-screw rod of one according to claim 2 twists off extruder, it is characterized in that, the power input shaft of described reduction box and the rotating shaft of generator carry out transmission by arranging drive.
4. the anti-screw rod of one according to claim 3 twists off extruder, it is characterized in that, described drive is belt pulley.
5. the anti-screw rod of one according to claim 2 twists off extruder, it is characterized in that, described limited torque protective device is also provided with the housing for coated electromagnetic clutch and generator, and described housing is provided with louvre.
6. the anti-screw rod of one according to claim 5 twists off extruder, it is characterized in that, described housing is also provided with heat abstractor.
7. the anti-screw rod of one according to claim 6 twists off extruder, it is characterized in that, described heat abstractor is radiator fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839464.1A CN104527023A (en) | 2014-12-30 | 2014-12-30 | Extruder for preventing screw from being twisted off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839464.1A CN104527023A (en) | 2014-12-30 | 2014-12-30 | Extruder for preventing screw from being twisted off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104527023A true CN104527023A (en) | 2015-04-22 |
Family
ID=52842743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839464.1A Pending CN104527023A (en) | 2014-12-30 | 2014-12-30 | Extruder for preventing screw from being twisted off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104527023A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2359271A (en) * | 2000-02-01 | 2001-08-22 | Krupp Werner & Pfleiderer Gmbh | Double screw extruder |
| CN201338381Y (en) * | 2009-01-16 | 2009-11-04 | 冯德富 | Overload protective device of plastic extruder |
| CN201448381U (en) * | 2009-06-26 | 2010-05-05 | 江苏省徐州锻压机床厂集团有限公司 | Excessive-torque protective coupling |
| CN201742283U (en) * | 2010-04-27 | 2011-02-09 | 谭晓婧 | Self-adaptive electromagnetic clutch |
| CN101444706B (en) * | 2007-11-28 | 2012-05-02 | 株式会社神户制钢所 | Load monitoring method and load monitoring apparatus for kneading apparatus |
| CN203391288U (en) * | 2013-05-24 | 2014-01-15 | 广东联塑机器制造有限公司 | Conical twin-screw extruder |
| CN203876203U (en) * | 2013-12-30 | 2014-10-15 | 广东联塑机器制造有限公司 | Adapter sleeve for preventing screw rod of double-screw extruder from being twisted off |
| CN204367364U (en) * | 2014-12-30 | 2015-06-03 | 广东联塑机器制造有限公司 | A kind of anti-screw rod twists off extruder |
-
2014
- 2014-12-30 CN CN201410839464.1A patent/CN104527023A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2359271A (en) * | 2000-02-01 | 2001-08-22 | Krupp Werner & Pfleiderer Gmbh | Double screw extruder |
| CN101444706B (en) * | 2007-11-28 | 2012-05-02 | 株式会社神户制钢所 | Load monitoring method and load monitoring apparatus for kneading apparatus |
| CN201338381Y (en) * | 2009-01-16 | 2009-11-04 | 冯德富 | Overload protective device of plastic extruder |
| CN201448381U (en) * | 2009-06-26 | 2010-05-05 | 江苏省徐州锻压机床厂集团有限公司 | Excessive-torque protective coupling |
| CN201742283U (en) * | 2010-04-27 | 2011-02-09 | 谭晓婧 | Self-adaptive electromagnetic clutch |
| CN203391288U (en) * | 2013-05-24 | 2014-01-15 | 广东联塑机器制造有限公司 | Conical twin-screw extruder |
| CN203876203U (en) * | 2013-12-30 | 2014-10-15 | 广东联塑机器制造有限公司 | Adapter sleeve for preventing screw rod of double-screw extruder from being twisted off |
| CN204367364U (en) * | 2014-12-30 | 2015-06-03 | 广东联塑机器制造有限公司 | A kind of anti-screw rod twists off extruder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080191484A1 (en) | Power Generation System | |
| CN201326512Y (en) | Control device for pitch system of wind turbine | |
| CN204367364U (en) | A kind of anti-screw rod twists off extruder | |
| CN106194583A (en) | A kind of change oar electric supply installation and wind power generating set | |
| CN204163983U (en) | The anti-reverse automatic controller of driving unit on screw pump | |
| CN104527023A (en) | Extruder for preventing screw from being twisted off | |
| CN101922413A (en) | Method and device for braking vertical axis wind turbine | |
| CN102322392A (en) | The pitch-controlled system of wind power generating set | |
| CN102274993A (en) | Structure of novel hand-hold electric drill | |
| CN116581893A (en) | Electric fracturing energy storage system | |
| CN201198817Y (en) | Separating and interconnecting network dual-purpose direct drive paddle-changing type wind power generator | |
| CN102751814A (en) | Small wind generator hybrid braking system and braking method | |
| CN202266370U (en) | Variable blade pitch system of wind generating set and wind generating set comprising same | |
| CN201167246Y (en) | Backup power apparatus for variable pitch system | |
| CN203770130U (en) | Driving device of side driving type reverse rotation preventing screw pump | |
| CN207612167U (en) | Self-retention decelerator used for high-voltage switch | |
| CN201827024U (en) | Brake device and vertical axis wind turbine adopting same | |
| CN103268122A (en) | Transmission control mechanism for photovoltaic tracker, photovoltaic tracker and transmission control method | |
| TWI498477B (en) | Wind power generating system | |
| CN202108661U (en) | Yaw control system used for wind power generation | |
| CN205610410U (en) | Vending machine motor separation and reunion structure | |
| CN101270732B (en) | Aerogenerator | |
| WO2011063586A1 (en) | Transmission system of wind power generator | |
| CN219322218U (en) | Double-shaft-extension generator based on electromagnetic clutch | |
| CN209375368U (en) | A kind of motor taking up motivation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |
|
| RJ01 | Rejection of invention patent application after publication |