CN201264348Y - Electric jacking apparatus - Google Patents

Electric jacking apparatus Download PDF

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Publication number
CN201264348Y
CN201264348Y CNU2008201203130U CN200820120313U CN201264348Y CN 201264348 Y CN201264348 Y CN 201264348Y CN U2008201203130 U CNU2008201203130 U CN U2008201203130U CN 200820120313 U CN200820120313 U CN 200820120313U CN 201264348 Y CN201264348 Y CN 201264348Y
Authority
CN
China
Prior art keywords
screw rod
nut
permanent magnet
screw
pedestal
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.)
Expired - Lifetime
Application number
CNU2008201203130U
Other languages
Chinese (zh)
Inventor
韩志翔
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.)
Union Plastic Hangzhou Machinery Co Ltd
Original Assignee
Union Plastic Hangzhou 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 Union Plastic Hangzhou Machinery Co Ltd filed Critical Union Plastic Hangzhou Machinery Co Ltd
Priority to CNU2008201203130U priority Critical patent/CN201264348Y/en
Application granted granted Critical
Publication of CN201264348Y publication Critical patent/CN201264348Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

An electric jacking device comprises a base; a screw rod is arranged on the base; the electric jacking device also comprise a screw rod and a nut which are engaged with each other; the front end of the screw is a push end, and the base is connected with an outer rotor permanent-magnetic-type servo motor, and the nut is fixed on a rotor of the outer rotor permanent-magnetic-type servo motor; the front part of the screw rod is provided with a limit element that limits the rotation of the screw rod and allows the transverse movement of the screw rod. The electric jacking device has the advantages of compact and simple structure, high energy performance ratio, precise mold closing distance control and large jacking force.

Description

A kind of electric pushing device
(1) technical field
The utility model relates to employed electric pushing device on a kind of engineering machinery, for example injection machine, the employed thrustor of jack.
(2) background technology
The thrustor of existing injection machine mostly is the hydraulic lock mold mechanism, adopts hydraulic jack to promote mechanical mechanism, finishes the folding of mould.
Also there is electric pushing device to be applied on the injection machine as shown in Figure 1; the connecting rod 2` of exterior sheathing 1` and matched moulds mechanical mechanism is hinged; nut 4` is set on rear pattern plate 3`; screw rod 5` cooperates with this nut; screw rod 5` front end connects the matched moulds mechanical mechanism, and the rear end of screw rod is driven by motor 7` by pulley mechanism 6`.Screw rod is in rotary course, and because of the promotion of nut, generation is advanced or retreated, and drives matched moulds machinery mechanism action.The shortcoming of this electric pushing device is: to the structure more complicated of the running part of screw rod, need transmit moment of torsion to the screw rod in the motion, this will open long keyway, and caused friction consumes very big; Secondly, the belt pulley kind of drive unavoidably has skidding, is unfavorable for the accurate control of pushing tow process; Once more, the transmission mechanism bulky complex, compact inadequately, multistage transmission causes that on the contrary energy efficiency reduces.
The version of another kind of electric pushing device is as shown in Figure 2: the rod hinge connection of rear pattern plate 3` and matched moulds mechanical mechanism; nut 4` is installed on the matched moulds mechanical mechanism; the screw rod 5` that is arranged on the rear pattern plate 3` cooperates with this nut, and screw rod is driven by motor 7` by pulley transmission mechanism 6`.Nut is advanced and retreat on screw rod when screw rod rotates, and drives matched moulds mechanical mechanism die sinking or matched moulds.Its shortcoming is that screw rod maintains static, and influences die sinking.For matched moulds need keep equivalent length with screw rod, and mechanical mechanism retreats when die sinking, and easy and screw front end is conflicted, and opening stroke is restricted, can not do big part goods.In addition, transmission mechanism complexity, energy consumption shortcoming big, that the pushing tow accuracy is poor, the life-span is short exists too.
Existing electronic jack adopts the internal rotor drive nut rotation of motor, the lifting of nut drive screw, because the moment of torsion of inner rotor motor is less relatively, the energy conversion efficiency of this jack is low, jacking force is little.
(3) summary of the invention
The utility model will solve that existing electric pushing device mechanism complexity, efficiency are low, the shortcoming of accuracy difference, the electric pushing device that provide a kind of compact conformation, help accurately control and efficiency height, jacking force is big.
Electric pushing device described in the utility model comprises pedestal, screw rod is located on the pedestal, also comprise intermeshing screw rod and nut, screw front end is a pushing end, it is characterized in that: connect an external rotor permanent magnet formula servomotor on the pedestal, described nut is fixed on the rotor of external rotor permanent magnet formula servomotor; The screw rod front portion is provided with the rotation of restriction screw rod but the locating part of permission screw translation.
Further, the rotor of described external rotor permanent magnet formula servomotor is arranged on the pedestal by taper roll bearing, the rotor of external rotor permanent magnet formula servomotor and described nut, screw coaxial arrange that the stator of external rotor permanent magnet formula servomotor connects housing, and housing connects described pedestal.
Further, described locating part is that the key that cooperates with elongated slot on the screw rod or the elongated slot that cooperates with key on the screw rod or screw rod front portion are in the bar-shaped hole that penetrates respective shapes, angle.
When external rotor permanent magnet formula servomotor when rotation energising, nut rotation because limited effect of screw rod can not be rotated, can only translation, so screw rod is driven and advances or retreat, and finishes the pushing tow action.
The utility model compact conformation, easy, nut directly is connected with motor, has avoided the how caused energy loss of gear stage, improves Energy Efficiency Ratio, also helps the accurate control of pushing tow process, and because moment is big, jacking force also strengthens simultaneously.
The utility model has the advantages that: compact conformation, easy, the Energy Efficiency Ratio height, mould-closing stroke control is accurate, jacking force is big.
(4) description of drawings
Fig. 1 is the structure chart of existing electric pushing device.
Fig. 2 is the structure chart of another existing electric pushing device.
Fig. 3 is that the utility model is applied in the structural representation on the injection machine.
Fig. 4 is that the utility model is applied in the structural representation on the jack.
(5) specific embodiment
Embodiment one
With reference to Fig. 3
Present embodiment is the example of the utility model when being applied to electric mode locking device on the injection machine.
Electric pushing device described in the utility model comprises pedestal, screw rod is located on the pedestal, also comprises intermeshing screw rod and nut, and screw front end is a pushing end, connect an external rotor permanent magnet formula servomotor on the pedestal, described nut is fixed on the rotor of external rotor permanent magnet formula servomotor; The screw rod front portion is provided with the rotation of restriction screw rod but the locating part of permission screw translation.
The rotor of described external rotor permanent magnet formula servomotor is arranged on the pedestal by taper roll bearing, the rotor of external rotor permanent magnet formula servomotor and described nut, screw coaxial are arranged, the stator of external rotor permanent magnet formula servomotor connects housing, and housing connects described pedestal.
The utility model is applied on the electric mode locking device in the present embodiment, and rear pattern plate 10 is pedestals.This electric mode locking device comprises the matched moulds mechanical mechanism, the front template 16 that described matched moulds mechanical mechanism comprises rear pattern plate 10, is used to that the moving die plate 15 of dynamic model 17 is installed and cover half 18 is installed, and described moving die plate 15 can close up relatively and separate with front template 16.Screw rod 8 is arranged on the described rear pattern plate 10, the screw rod 8 anterior cross car walls 14 that connect described matched moulds mechanical mechanism.Cross car wall 14 has played the effect that limits screw rod 8 rotations but allow the locating part of screw rod 8 translations simultaneously.
External rotor permanent magnet formula servomotor is housed on the rear pattern plate 10, and the rotor 3 of described external rotor permanent magnet formula servomotor connects and described screw rod 8 nut engaged 9.Screw rod 8 adopts ball screw, and nut 9 adopts ball nut.
The rotor 3 of described external rotor permanent magnet formula servomotor is arranged on the rear pattern plate 10 by taper roll bearing 2, the rotor 3 of external rotor permanent magnet formula servomotor and described nut 9, screw rod 8 coaxial arrangement, the stator 6 of external rotor permanent magnet formula servomotor connects shell 7, and shell 7 connects described rear pattern plate 10.
Magnet 4 is housed on the rotor 3, is wound with coil 5 on the stator 6 of silicon steel sheet material.The bearing block 1 that is used to install taper roll bearing 2 is fixed on rear pattern plate 10.
Rear pattern plate 10, moving die plate 15 and front template 16 all are enclosed within on the girt.
Described matched moulds mechanical mechanism is a crank connecting rod mechanism; the rear end of the bent hand 11 of the hinged symmetrically up and down a pair of elbow of rear pattern plate 10; the front end of the bent hand 11 of elbow is simultaneously hinged with the rear end of bent hand small rod 12 and bent hand big connecting rod 13; the other end of two bent hand small rods 12 is hinged on cross car wall 14 two ends symmetrically, and the front end of two bent hand big connecting rods 13 is hinged on moving die plate 15 upper and lower sides symmetrically.
Rotor 3 is fixed together with ball screw nut 9, on the locked mode motor is logical during positive electricity, sees that from motor shaft end rotor makes clockwise direction and rotate, and because of 9 of bolt and nuts rotate, screw rod 8 is done translation, and at this moment screw rod 8 will stretch out from axle head.Screw rod 8 is to do translation with cross car wall 14, and this moment, cross car wall 14 was done the action that translation produces clamping mold 17,18 by crank connecting rod mechanism drive collapsible form 15 along pull bar 19; Rotor is done and is counterclockwise rotated (from motor shaft end) when negative electricity on the locked mode motor is logical.Screw rod 8 will be from the motor shaft end retraction, and screw rod drives cross car wall 14 and does translation, and cross car wall drove template 15 by crank connecting rod mechanism and did translation along pull bar 19 and produce the action of opening mould 17,18 this moment.
The utility model screw drive mechanism compactness, easy, nut directly is connected with external rotor permanent magnet formula servomotor, has avoided the how caused energy loss of gear stage, improves Energy Efficiency Ratio, also helps the accurate control of screw rod process.
Embodiment two
With reference to Fig. 5,6:
Present embodiment is that applied field is different with the difference of embodiment one, and present embodiment is that the utility model is applied in the example on the jack.
Electric pushing device described in the utility model comprises pedestal, screw rod passes and is located on the pedestal, also comprises intermeshing screw rod and nut, and screw front end is a pushing end, connect an external rotor permanent magnet formula servomotor on the pedestal, described nut is fixed on the rotor of external rotor permanent magnet formula servomotor; The screw rod front portion is provided with the rotation of restriction screw rod but the locating part of permission screw translation.
The rotor of described external rotor permanent magnet formula servomotor is arranged on the pedestal by taper roll bearing, the rotor of external rotor permanent magnet formula servomotor and described nut, screw coaxial are arranged, the stator of external rotor permanent magnet formula servomotor connects housing, and housing connects described pedestal.
In the present embodiment, jack base 20 and jack loam cake 21 are pedestals, and the housing of external rotor permanent magnet formula servomotor is contained on the jack base 20, and bearing block 1 and taper roll bearing 2 are contained on the jack loam cake 21.
Cover plate 22 is housed on the loam cake 21, and the anterior joint portion with cover plate 22 of screw rod is provided with the locating part that the restriction screw rod rotates.Described locating part can be taked one of following three kinds of forms: one, the key that cooperates with elongated slot on the screw rod is set on the cover plate 22; Two, the elongated slot that cooperates with key on the screw rod is set on the cover plate 22; Three, the screw rod front portion is in the bar-shaped hole that penetrates the respective shapes on the cover plate 22, angle.
When nut 9 rotated under the stator of outer rotor magneto servomotor drives, outer rotor drove the nut rotation, because limited can not the rotation of screw rod can only translation, so screw rod is upwards done jacking.When the motor reverse rotation, screw rod draws in downwards.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.

Claims (3)

1, a kind of electric pushing device comprises pedestal, screw rod is located on the pedestal, also comprise intermeshing screw rod and nut, screw front end is a pushing end, it is characterized in that: connect an external rotor permanent magnet formula servomotor on the pedestal, described nut is fixed on the rotor of external rotor permanent magnet formula servomotor; The screw rod front portion is provided with the rotation of restriction screw rod but the locating part of permission screw translation.
2, electric pushing device as claimed in claim 1, it is characterized in that: the rotor of described external rotor permanent magnet formula servomotor is arranged on the pedestal by taper roll bearing, the rotor of external rotor permanent magnet formula servomotor and described nut, screw coaxial are arranged, the stator of external rotor permanent magnet formula servomotor connects housing, and housing connects described pedestal.
3, electric pushing device as claimed in claim 1 or 2 is characterized in that: described locating part is that the key that cooperates with elongated slot on the screw rod or the elongated slot that cooperates with key on the screw rod or screw rod front portion are in the bar-shaped hole that penetrates respective shapes, angle.
CNU2008201203130U 2008-06-25 2008-06-25 Electric jacking apparatus Expired - Lifetime CN201264348Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201203130U CN201264348Y (en) 2008-06-25 2008-06-25 Electric jacking apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201203130U CN201264348Y (en) 2008-06-25 2008-06-25 Electric jacking apparatus

Publications (1)

Publication Number Publication Date
CN201264348Y true CN201264348Y (en) 2009-07-01

Family

ID=40830702

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201203130U Expired - Lifetime CN201264348Y (en) 2008-06-25 2008-06-25 Electric jacking apparatus

Country Status (1)

Country Link
CN (1) CN201264348Y (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20090701

Effective date of abandoning: 20080625