CN2438110Y

CN2438110Y - Ejection and metering sensing and measuring mechanism for injection molding machine

Info

Publication number: CN2438110Y
Application number: CN 00250994
Authority: CN
Inventors: 蔡浪富; 赖根贤; 林国雄
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2000-08-29
Filing date: 2000-08-29
Publication date: 2001-07-04
Anticipated expiration: 2010-08-29

Abstract

The utility model relates to a sensing and measuring mechanism for the ejection and the metering of an injection molding machine. The utility model is formed by that a load element which is provided with a sensor is directly and fixedly locked on a coupler between a conventional belt pulley and a movable plate; the coupler is fixed on the movable plate; the load element directly senses and measure the ejection and the metering; the measured signal completes the feedback of the control of a closed circuit; after an ejection action is relatively completed, with the rotary driving of another measuring conventional belt pulley, the signal is transferred to a shaft coupler to cause a plasticizing screw rod to return to the original ejection position to carry out the next circulating action; meanwhile, the load element is used for detecting the pressure of the process, obtaining the purposes of the correct monitoring of the pressure of the ejection, metering loose retreatment to obtain the optimal ejection quality.

Description

The ejaculation of injection (mo(u)lding) machine and metering sense mechanism

The utility model relates to a kind of injection (mo(u)lding) machine, refers in particular to a kind of ejaculation and metering sensing structure of injection (mo(u)lding) machine.

Utilize the loading element with sensing injection pressure and metering back pressure for injection (mo(u)lding) machine, finish the full cut-off circuit controls with effective monitoring, with degree of stability and the fiduciary level that reaches the high-performance injection (mo(u)lding) machine, wherein this injection pressure of sensing that this loading element is how accurate and metering back pressure, be the degree of stability that influences the high-performance injection (mo(u)lding) machine and the principal element of fiduciary level, especially when being applied to the electrical servo motor driven, more need the signal of loading element whereby, the strength that control ejaculation pressure, metering back pressure, pine move back.

See also Figure 1 shows that present Jet forming machine use " injection (mo(u)lding) machine screw rod rotation and ejecting device " and structure, existing loading element 39 effectively sensing injection pressure and the metering back pressure of disclosing of this structure, see also shown in Figure 2, its loose route of retreat footpath A and injection path B represent the path that its pressure transmits, because this case mechanism locks in bearing seat 371 on the wedge 391 admittedly, this wedge 391 also locks together admittedly with this loading element 39, and this wedge 391 directly is locked on the dynamic pressure plate 23, cause this mechanism to produce the set pressure of loading element 39 and the pine that produces because of fit on are striden the gap, make the pressure detection of this loading element 39 that relative error or directly sensitive reaction be arranged and correct output is provided, and then the degree of stability and the fiduciary level of influence ejaculation greatly, in addition, when the rotary screw 17 of this case borrows belt pulley 42 driven in rotation to be transmitted to bearing plate 46 to dynamic pressure plate 23, and can't directly read detected value by loading element 39, will cause distortion and error is arranged, and can't precise measure its metering output pressure value, and can't move back strength and need move back the auxiliary control metering of strength back pressure by feedback control pine, and then can influence the ejaculation quality with pine.

The utility model purpose is to provide a kind of ejaculation and metering mechanism of injection (mo(u)lding) machine, and one loading element can accurate sensing injection pressure and metering back pressure.

The utility model provides a kind of ejaculation and metering sense mechanism of injection (mo(u)lding) machine, be to be installed in the injection unit, this injection unit includes preceding board, back board, moving plate, the ball lead screw, nut and two tie-rods, wherein be somebody's turn to do the back board, preceding board is to support the relevant parts of this injection unit, this two tie-rod is across therebetween, and moving plate can move on this two tie-rod, this ball screw is to borrow nut locking back board, its other end is furnished with the conventional belt pulley of ejaculation, utilize a ball bearing to coat a connecting piece in interior, this connecting piece is fixed on the moving plate, can rotate with respect to this connecting piece and penetrate conventional belt pulley, the one loading element that has sensor is locked in this connecting piece, and borrow the bearing pack combined pressure of tool axial forces to be against on the interior ring of loading element, with with the ball lead screw in conjunction with the injection (mo(u)lding) machine that constitutes a tool strength sensing, it is characterized in that: this loading element that has sensor is locked between the connecting piece interior spaced ring and bearing ring seat admittedly, its plasticized screw and croze axis fixing plate, the rotation that is locked into one admittedly of conventional belt pulley and screw rod connector.

The utility model mainly focuses on to such an extent that make the loading element of this practical injection (mo(u)lding) machine can make precise measure injection pressure and metering back pressure, to finish the full cut-off circuit controls, reach the degree of stability and the fiduciary level of high-performance Jet forming machine, and solve aforementioned pressure detection distortion of the prior art and error.

Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 use for present injection (mo(u)lding) machine " injection (mo(u)lding) machine screw rod rotation and ejecting device " and structural representation;

Pressure bang path synoptic diagram when Fig. 2 moves back with the injection engineering for the pine of Fig. 1 injection (mo(u)lding) machine;

Fig. 3 is the part-structure synoptic diagram of the utility model injection (mo(u)lding) machine;

Fig. 4 is the structural representation of the utility model injection (mo(u)lding) machine;

Fig. 5 is the metering back pressure and the injection pressure bang path synoptic diagram of the utility model injection (mo(u)lding) machine.

See also shown in Figure 3, the utility model is with the inner ring 30 of loading element 30 " be embedded in spaced ring 38 and the bearing ring seat 39; its outer ring 30 ' directly is locked on the connecting piece 37; form bearing nut 31 ' and circular cone ball bearing 31; combination of thrust bearing 36; only push down the inner ring 30 ' of loading element 30 '; so do not influence the pressure detection of this loading element 30, the pressure that event is passed back by plasticized screw 46, be transmitted on the moving plate 32 by screw rod connector 33 and croze fixed head 45, acting on this lotus through connecting piece 37 gets on the 30 ' position, outer ring of element 30, produce the relation of a correlation displacement, and produce the compliance voltage of a linear scaling by strainometer on this loading element 30 301, and export a force value, and feedback in control system, this control system will be done the correction of servo motor output strength by its pressure error value, correctly effectively and directly to control the pressure in the start process, reach so-called full cut-off and return our ejaculation, the precision pressure control that metering and pine move back.

See also Fig. 4, injection (mo(u)lding) machine of the present utility model comprises preceding board 42, back board 49, moving plate 32, ball lead screw 47, nut 48 and two tie-rods 41, wherein be somebody's turn to do back board 49, preceding board 42 is to support the relevant parts of this injection (mo(u)lding) machine, this two tie-rod 41 is across therebetween, and moving plate 32 can move on this two tie-rod 41, circle is locked in connecting piece 37 outside the loading element 30, this connecting piece 37 fixes with moving plate 32, and use bearing nut 31 ' that this loading element 30 is locked between neck collar 39 and the spaced ring 38 admittedly, lacing jacket 51 is fixed together ball lead screw 47 and conventional belt pulley 35, when transmission, this penetrates conventional belt pulley 35 and drives by the servo motor rotation, and torsion is transmitted to this ball lead screw 47 and nut 48 in thrust bearing 36 and circular cone ball bearing 31, rotates mutually, and do to move and drive through bearing nut 31 ' and connecting piece 37 and drive the preceding of moving plate 32 and then finish and penetrate and the pressurize operation, another measures conventional belt pulley 43 and is driven by another servo motor rotation, by the torque transmission of croze axis fixing plate 45 and shaft coupling 33, make plasticized screw 46 make to rotate and carry out measurement process.

Whereby, injection (mo(u)lding) machine utilization of the present utility model has the loading element 30 of the sensor of strainometer 301 and so on, directly be locked on the connecting piece 37 between conventional belt pulley 35 and the moving plate 32, and this connecting piece 37 is fixed on the moving blackboard newspaper 32, and in penetrating course of action, this penetrates conventional belt pulley 35 driven in rotation and cooperates thrust bearing 36, the locking combination of circular cone ball bearing 31 and bearing nut 31 ', make this ball lead screw 47 carry out fast moving, penetrate action and drive advancing of moving plate 32 to finish, around here, the injection pressure that this plasticized screw 46 is passed back can be effective, accurate directly responds to detection by this loading element 30, and the signal that precise measure must be arranged is finished the control of back coupling closed loop, after finishing the ejaculation action relatively, because of croze axis fixing plate 45 and conventional belt pulley 43 usefulness screws are fixed, can measure conventional belt pulley 43 rotations by another and drive croze axis fixing plate 45, because of not only using first quarter moon ring 52 to connect with plasticized screw 46, fixes croze axis fixing plate 45 again, drive plasticized screw 46 rotations, screw rod connector 33 fixes with croze entirely with conventional belt pulley 43 again, drive screw rod connector 33 rotation together, connector 33 combines fixing with shaft joint 33 ', and shaft joint 33 ' links with moving plate 32 again, and make plasticized screw 46 return back to former ejaculation position, to carry out next do action, metering back pressure around here reaches connecting piece 37 through moving plate 32, spaced ring 38 is pressed to this loading element 30 and can be responded to the pressure that measures this process, reach the locating and monitoring of its tram whereby, to get best ejaculation quality.

See also shown in Figure 5ly, be the synoptic diagram of the pressure bang path B of the pressure bang path A of the utility model pine regression journey and injection pressure operation, all pass through the accurately sensed measurement of loading element 30 effectively.Promptly as shown in Figure 4, footpath A was when conventional belt pulley 35 reverses during this transmitted, 47 rotations of ball lead screw, borrow bearing nut 31 ' to transmit torsion and arrive loading element 30 through bearing ring seat 39 in angular ball bearing 31, and produce the compliance voltage of a linear scaling and export a force value by the strainometer on the loading element 30 301, reach moving plate 32 fast moving of connecting piece 37 drives again and carry out loose deactuate work, this pine moves back strength can be effectively accurately by loading 30 direct sensing, and the precise measure signal must be arranged to finish the closed circuit control of back coupling, this bang path B borrows 47 rotations of conventional belt pulley 35 driving ball lead screws to advance, and torsion is transmitted to the inner ring 30 ' that spaced ring 38 presses this loading element 30 ', go further and export a force value to directly producing a compliance voltage in strainometer 301, and on the connecting piece 37 that the outside screw that is transmitted to loading element 30 locks, and this connecting piece 37 borrows the screw locking on moving plate 32 and drive and should move plate 32 and move, reach screw rod connector 33 at last and force plasticized screw 46 fast moving, path whereby is to pass through the accurately sensed measurement of loading element 30 effectively.

The above only is the utility model preferred embodiment, and non-limiting the utility model practical range, and promptly all equalizations of being done according to the utility model claim change and modify, and all still belong in the claim protection domain of the present utility model.

Claims

The ejaculation of an injection (mo(u)lding) machine and the metering sense mechanism, be to be installed in the injection unit, this injection unit includes preceding board, back board, moving plate, the ball lead screw, nut and two tie-rods, wherein be somebody's turn to do the back board, preceding board is to support the relevant parts of this injection unit, this two tie-rod is across therebetween, and moving plate can move on this two tie-rod, this ball screw is to borrow nut locking back board, its other end is furnished with the conventional belt pulley of ejaculation, utilize a ball bearing to coat a connecting piece in interior, this connecting piece is fixed on the moving plate, can rotate with respect to this connecting piece and penetrate conventional belt pulley, the one loading element that has sensor is locked in this connecting piece, and borrow the bearing pack combined pressure of tool axial forces to be against on the interior ring of loading element, with with the ball lead screw in conjunction with the injection (mo(u)lding) machine that constitutes a tool strength sensing, it is characterized in that: this loading element that has sensor is locked between the connecting piece interior spaced ring and bearing ring seat admittedly, its plasticized screw and croze axis fixing plate, the rotation that is locked into one admittedly of conventional belt pulley and screw rod connector.
2. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, this connecting piece and moving plate use screw to fix.
3. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that the outer ring of loading element is locked admittedly with connecting piece.
4. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, this ball lead screw and conventional belt pulley use lacing jacket to fix.
5. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, this ball lead screw uses the bearing nut that circular cone ball bearing, bearing ring seat, loading element, spaced ring and connecting piece are locked into one admittedly.
6. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that this routine belt pulley directly drives this ball lead screw and rotates in nut.
7. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, this plasticized screw and croze axis fixing plate use the first quarter moon ring to be fixed into one.
8. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, this routine belt pulley and screw rod connector use croze to fix.
9. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, this routine belt pulley and croze axle use screw to fix.
10. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, shaft joint and moving plate use screw to fix.
11. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism, it is characterized in that, this injection (mo(u)lding) machine is to utilize conventional belt pulley to drive the rotation of ball lead screw, and cooperation thrust bearing, the locking combination of circular cone ball bearing and bearing nut, make this ball lead screw carry out fast moving, penetrate action and drive advancing of moving plate to finish, this routine belt pulley is in contrast to the rotation of penetrating action, be by the bearing nut, circular cone ball bearing and bearing ring seat are transmitted strength to loading element and connecting piece, retreat to finish loose deactuate work and drive moving plate.
12. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism, it is characterized in that, the path of this loading element sensing injection strength, be to advance to press on this loading element outer ring by the ball lead screw to pass, and be transmitted to the formed path of plasticized screw through connecting piece to moving plate in this loading element by spaced ring.
13. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism, it is characterized in that, the path of this loading element sensing metering strength is to be passed to moving plate by plasticized screw to reach spaced ring to the formed path of ball screw through this loading element again.
14. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism, it is characterized in that, loose deactuate after this injection action is finished is done, the pine of this loading element sensing moves back the strength path around here, be to pass in this loading element by the bearing ring seat by the bearing nut, be transmitted to this connecting piece again and the formed path of the plate that arrives,
15. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that this loading element outer ring is that use device has the sensor that can detect strength, penetrate strength, metering back pressure and pine with accurate sensing and move back strength.
16. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism is characterized in that, the detected value of this loading element is to be proportional to ejaculation strength, metering back pressure and pine to move back strength.
17. the ejaculation of injection (mo(u)lding) machine as claimed in claim 1 and metering sense mechanism, it is characterized in that, this Jet forming machine directly detects this pine by this loading element and moves back strength, moves back this plasticized screw and effectively and delicately auxiliary control metering back pressure and can accurately take out.