CN202071309U - Servo drive type die casting machine - Google Patents
Servo drive type die casting machine Download PDFInfo
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- CN202071309U CN202071309U CN2011201466246U CN201120146624U CN202071309U CN 202071309 U CN202071309 U CN 202071309U CN 2011201466246 U CN2011201466246 U CN 2011201466246U CN 201120146624 U CN201120146624 U CN 201120146624U CN 202071309 U CN202071309 U CN 202071309U
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Abstract
The utility model provides a servo drive type die casting machine which is characterized by comprising a servo drive system, an injecting pull rod (203), an ejected push plate (302) and a die adjustment gearwheel (403), wherein the servo drive system consists of a servo motor (3) and an oil pump (4), the output of the oil pump (4) is connected with the input end of a hydraulic executing part, a pressure and flow sensor is arranged in the hydraulic executing part, the output of the pressure and flow sensor is connected with an electric controller, and the output of the electric controller is connected with the input end of the servo motor (3). As the a servo drive type die casting machine adopts the servo control, the control precision of a power system is enhanced, the structure is simplified; and by improving key parts, the service life is prolonged, raw materials are reduced, and the structure of the whole machine is simpler.
Description
Technical field
The utility model relates to a kind of die casting machine, especially a kind of die casting machine that relies on the driven by servomotor hydraulic work system, specifically a kind of servo driven type die casting machine.
Background technology
At present, the hydraulic system of die casting machine all is the motor pump combination that common electric machine 1 and constant displacement pump 2 are formed, as shown in Figure 1.In the hydraulic system of constant displacement pump, oil pump motor provides constant flow with constant rotating speed, in order to satisfy the requirement of different operating modes, must on oil circuit, increase pressure proportioning valve and flow proportion valve, as shown in Figure 2, required pressure and the flow size of working is that depended on pressure proportioning valve and flow proportion valve are regulated, and comes controlled pressure or flow size by the aperture of adjusting pressure or flow proportion valve.Unnecessary hydraulic oil refluxes by overflow valve, and this process is called high pressure and dams, and the energy loss that is caused by it is generally about 50%.Other spill losses and caloric value waste energy 20%.And there are shortcomings such as energy consumption height, big, the oily temperature height of noise, reaction sensitivity difference in this system.
In addition, need between die casting machine portal frame and the quiet mold mounting plate to be connected with three or four injection pull bars, the connected mode of injection pull bar and quiet template is at present: the end at pull bar is processed cannelure, adds the gland connection with the two halves snap ring.Because cannelure exists very big stress to concentrate, and a lot of pull bar fracture defects once took place.For fear of the fracture of pull bar, method increasing pull bar external diameter that generally adopts at present and cannelure diameter solve, and have caused raw-material waste.
The ejecting mechanism of die casting machine is made up of a hydraulic jack and liftout plate, and this mechanism is installed in the back side of dynamic model installing plate, and can not interfere with matched moulds toggle motion, so this mechanism must be very compact.Have pairs of anti-loose nut structure and nut commonly used at present add the floor clip structure, this structure not only axial dimension is big, and very easily vibrated and become flexible, also there are the round nut of employing and a floor clip to realize locking, these two kinds of structures are when die casting machine frequently ejects workpiece, work under vibration environment for a long time, round nut becomes flexible easily, comes off, and this is not still had good solution at present.
Must adjust the thickness of mould in the die casting machine work; because mould is in general all very heavy; therefore must adjust by mould adjusting mechanism; existing mould adjusting mechanism drives driving gear by the mode transfer motor and rotates; driving gear drives the mode transfer gear wheel again and rotates; the mode transfer gear wheel drives the mould that is attached thereto again and moves forward and backward, thereby realizes the adjustment to the attenuation of mould thickening.The driving gear of this structure must bear bigger radial load in the driving process, contact-making surface reduces when causing engagement, cause the damage of gear easily, and hydraulic motor output shaft will bear the radial load that driving gear passes over for a long time and bend, cause the motor shaft end seal failure, cause leakage of oil, cause local pollution.To this, still there is not good solution at present.
Summary of the invention
The purpose of this utility model is that to add energy consumption height, waste that hydraulic system that constant displacement pump forms exists at existing common electric machine big, and the problem of poor sensitivity design and a kind ofly can regulate the energy-saving servo driven type die casting machine that oil pump is exported as required.
The technical solution of the utility model is:
A kind of servo driven type die casting machine is characterized in that it comprises:
One servo drive system, this servo drive system is made up of servomotor 3 and oil pump 4, the output of oil pump 4 links to each other with the input of hydraulic pressure execution unit, pressure and flow sensor are installed in the hydraulic pressure execution unit, the output of pressure and flow sensor links to each other with electric control gear, and the output of electric control gear links to each other with the input of servomotor 3;
One injection pull bar 203, be processed with external screw thread on one end of these injection pull bar 203 insertion portal frames 205, nut 204 spinnings are on described external screw thread, nut 204 is arranged in lid and presses 201, one end of nut 204 and the interior step surface 207 of gland 201 offset, and described gland 201 is fixed on the portal frame 205 by screw rod 206;
One ejects push pedal 302, this ejects push pedal 302 and is installed on the step section 307 of liftout tank piston rod 301, described step section 307 is provided with groove 308, half snap ring 305 is installed in the groove 308, ejecting push pedal gland 306 is sleeved on the step section 307, eject the interior step surface of push pedal gland 306 and the outer face of half snap ring 305 and offset, the inner face of half snap ring 305 offsets with the end face that ejects push pedal 302, described eject push pedal gland 306 by connecting bolt 308 with eject push pedal 302 and be fixedly linked;
One mode transfer gear wheel 403, this mode transfer gear wheel 403 is meshed with driving gear 402, centre bore one end of driving gear 402 is sleeved on the output shaft of the mode transfer motor 6 that drives its rotation, the other end of the centre bore of driving gear 402 is sleeved on the end of back shaft 404, the other end of back shaft 404 is installed in the bearing 405, and bearing 405 is fixedly mounted on the another side of portal frame 205.
Described oil pump 4 is gear pump, plunger displacement pump or screw pump.
The oil inlet end of the die cylinder 5 in the reversal valve HMV of the output of described oil pump 4 by check valve DV1 and serial connection and the hydraulic pressure execution unit links to each other, the oil outlet end of die cylinder 5 is by reversal valve HMV, TMV links to each other with the input of mode transfer motor 6, the output of mode transfer motor 6 is existing to link to each other with the oil inlet end that ejects oil cylinder 7, pressurizing cylinder 8 and injection mechanism hoist cylinder 9 respectively by reversal valve TMV, pressurizing cylinder 8 oil outlet ends link to each other with the oil inlet end of injection oil cylinder 10, and the oil outlet end that ejects oil cylinder 7, injection mechanism hoist cylinder 9 and injection oil cylinder 10 links to each other with fuel tank 11; At described die cylinder 5, eject on oil cylinder 7 and the injection oil cylinder 10 position sensor all be installed.
Be processed with radially screw 208 on the described nut 204, radially in the screw 208 locking sunk screw be installed.
Described half snap ring 305 is arranged in the installation groove 309 that ejects in the push pedal 302.
Described back shaft 404 is provided with positioning boss 407, and the width of positioning boss 407 is less than the gap between mode transfer gear wheel 403 and the portal frame 205, and the external diameter of positioning boss 407 is greater than the center-hole diameter or the brearing bore diameter of driving gear 402.
Described injection pull bar 203 is made up of the polished rod section 501 in the middle of being positioned at and the thread segment 502 at two ends, be provided with escape 503 between thread segment 502 and the polished rod section 501, be provided with off-load groove 504 near escape 503 positions on the described polished rod section 501, the two ends of described off-load groove 504 and polished rod section 501 are connected smoothly by cambered surface.
The degree of depth of described off-load groove 504 is greater than the degree of depth of escape 503.
The width of described off-load groove 504 is not less than the twice of escape 503 width.
The quantity of described off-load groove 504 is one or two.
The beneficial effects of the utility model:
1, good energy-conserving effect, but energy savings 30%-60%.
2, complete machine operation noise is low, and effect is more obvious when low cruise, effectively improves production environment.
3, drive system is quick on the draw, stable action.
4,, realize significantly water saving because the hydraulic system energy consumption reduces, and the hydraulic oil temperature rise is low, does not even need cooling water generally speaking.
5, the utility model has solved the problem that stress is concentrated under the prerequisite that does not increase injection pull bar external diameter, has improved the bulk strength of pull bar, has saved raw material.
6, the syndeton of liftout tank piston rod of the present utility model and liftout plate is simple, connects reliably, and axial dimension is little, can not produce movement interference.
7, the utility model is by increasing the stressing conditions that back shaft has changed driving gear, make the output shaft distortion of mode transfer motor reduce, rigidity increases, driving gear can be meshed well with the mode transfer gear wheel, the flank of tooth is stressed evenly and not fragile, helps prolonging complete machine time between failures and cycle.
8, the utility model is under the prerequisite that does not increase the pull bar diameter, effect by the off-load groove is disperseed the stress that former withdrawing place concentrates, improved the tensile strength of pull bar, increased the elasticity of pull bar by the off-load groove, utilize the suffered moment of flexure of elastic force opposing pull bar of pull bar, improved bending strength, the fault that pull bar ruptures has not taken place again, improved its reliability through the actual uses in 2 years.
The utility model has improved the control accuracy of dynamical system by adopting SERVO CONTROL, simplifies the structure, and the improvement by to critical component has improved service life, has reduced raw material, makes complete machine structure more simple simultaneously.
Description of drawings
Structural representation is formed in the power section of the existing die casting machine hydraulic system of Fig. 1.
Fig. 2 is the hydraulic system principle figure that matches with Fig. 1.
Fig. 3 is that structural representation is formed in the hydraulic system power section of die casting machine of the present utility model.
Fig. 4 is the hydraulic system principle figure that matches with Fig. 3.
Fig. 5 is the syndeton schematic diagram of portal frame of the present utility model and injection pull bar.
Fig. 6 is the syndeton schematic diagram of liftout tank piston of the present utility model and liftout plate.
Fig. 7 is the drives structure schematic diagram of mode transfer gear wheel of the present utility model.
Fig. 8 is the structural representation of injection pull bar of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Shown in Fig. 3-8.
A kind of servo driven type die casting machine, its basic frame for movement and existing die casting machine are basic identical, and key of the present utility model is to be that part such as the injection pull bar 203 that is prone to fault in servo drive system and the actual production use, structure and the type of drive that ejects push pedal 302 and mode transfer gear wheel 403 are improved to its dynamical system.Details are as follows:
A kind of servo driven type die casting machine, its power section is made up of servomotor 3 and oil pump 4, as shown in Figure 3, oil pump 4 can adopt a kind of in gear pump, plunger displacement pump or the screw pump, the output of oil pump 4 links to each other with the input of hydraulic pressure execution unit, pressure and flow sensor (installation site and quantity can set up on their own as required) are installed in the hydraulic pressure execution unit, and the output of pressure and flow sensor links to each other with electric control gear, and the output of electric control gear links to each other with the input of servomotor 3.Electric control gear can adopt routine techniques to be realized, its major function is to convert to according to the signal that flow and pressure sensor are sent here to drive servomotor power output size, and this need not creative work and can realize for the electrical design personnel.
Hydraulic system principle figure of the present utility model as shown in Figure 4, the output of oil pump 4 wherein links to each other by the oil inlet end of the die cylinder 5 in check valve DV1 and reversal valve HMV and the hydraulic pressure execution unit, the oil outlet end of die cylinder 5 links to each other with the input of mode transfer motor 6 by reversal valve HMV and TMV, the output of mode transfer motor 6 existing by reversal valve TMV respectively with eject oil cylinder 7, the oil inlet end of pressurizing cylinder 8 and injection mechanism hoist cylinder 9 links to each other, pressurizing cylinder 8 oil outlet ends link to each other with the oil inlet end of injection oil cylinder 10, eject oil cylinder 7, the oil outlet end of injection mechanism hoist cylinder 9 and injection oil cylinder 10 links to each other with fuel tank 11; At described die cylinder 5, eject on oil cylinder 7 and the injection oil cylinder 10 position sensor all be installed.
Comparison diagram 4 and Fig. 2 can find out, it is of the present utility model that to add gear pump, plunger displacement pump or screw pump by servomotor 3 be the rotating speed that the main hydraulic system of forming can directly be regulated servomotor 3 according to actual pressure and flow needs, thereby the output flow and the pressure of control oil pump 4, omitted that proportioning valve is held back and choke valve, reduce leakage, made full use of energy.Thereby can save the energy up to 60%, reach the purpose of economize on electricity and protection fluid pressure line, and help improving pressure and flow accuracy control accuracy, raising speed increases efficient.Reduce noise.
Be processed with external screw thread on one end of the injection pull bar 203 insertion portal frames 205 of the utility model die casting machine, nut 204 spinnings are on described external screw thread, nut 204 is arranged in lid and presses 201, one end of nut 204 and the interior step surface 207 of gland 201 offset, and described gland 201 is fixed on the portal frame 205 by screw rod 206; Be processed with radially screw 208 on the described nut 204, radially in the screw 208 locking sunk screw be installed, as shown in Figure 5.In order to improve the tensile strength of injection pull bar 203, injection pull bar 203 can be designed to the structure formed by the thread segment 502 at the polished rod section 501 of centre and two ends, be provided with escape 503 between thread segment 502 and the polished rod section 501, be provided with off-load groove 504 near escape 503 positions on the described polished rod section 501, the two ends of described off-load groove 504 and polished rod section 501 are connected smoothly by cambered surface, as shown in Figure 8, the degree of depth of described off-load groove 504 should be greater than the degree of depth of escape 503 during concrete enforcement, the width of described off-load groove 504 is not less than the twice of escape 503 width, the quantity of described off-load groove 504 can be one, also can be two.
The push pedal 302 that ejects of die casting machine of the present utility model is installed on the step section 307 of liftout tank piston rod 301, described step section 307 is provided with groove 308, half snap ring 305 is installed in the groove 308, ejecting push pedal gland 306 is sleeved on the step section 307, ejecting the interior step surface of push pedal gland 306 and the outer face of half snap ring 305 offsets, the inner face of half snap ring 305 offsets with the end face that ejects push pedal 302, described eject push pedal gland 306 by connecting bolt 308 with eject push pedal 302 and be fixedly linked; Described half snap ring 305 is arranged in the installation groove 309 that ejects in the push pedal 302, as shown in Figure 6.
The mode transfer gear wheel 403 of die casting machine of the present utility model is meshed with driving gear 402, centre bore one end of driving gear 402 is sleeved on the output shaft of the mode transfer motor 6 that drives its rotation, the other end of the centre bore of driving gear 402 is sleeved on the end of back shaft 404, the other end of back shaft 404 is installed in the bearing 405, bearing 405 is fixedly mounted on the another side of portal frame 205, thereby improved the rigidity of mode transfer motor 6 output shafts, guaranteed the mode transfer precision.As shown in Figure 7.Described back shaft 404 is provided with positioning boss 407, and the width of positioning boss 407 is less than the gap between mode transfer gear wheel 403 and the portal frame 205, and the external diameter of positioning boss 407 is greater than the center-hole diameter or the brearing bore diameter of driving gear 402.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (10)
1. servo driven type die casting machine is characterized in that it comprises:
One servo drive system, this servo drive system is made up of servomotor (3) and oil pump (4), the output of oil pump (4) links to each other with the input of hydraulic pressure execution unit, pressure and flow sensor are installed in the hydraulic pressure execution unit, the output of pressure and flow sensor links to each other with electric control gear, and the output of electric control gear links to each other with the input of servomotor (3);
One injection pull bar (203), be processed with external screw thread on one end of this injection pull bar (203) insertion portal frame (205), nut (204) spinning is on described external screw thread, nut (204) is arranged in lid and presses (201), the interior step surface (207) of one end of nut (204) and gland (201) offsets, and described gland (201) is fixed on the portal frame (205) by screw rod (206);
One ejects push pedal (302), this ejects push pedal (302) and is installed on the step section (307) of liftout tank piston rod (301), described step section (307) is provided with groove (308), half snap ring (305) is installed in the groove (308), ejecting push pedal gland (306) is sleeved on the step section (307), ejecting the interior step surface of push pedal gland (306) and the outer face of half snap ring (305) offsets, the inner face of half snap ring (305) offsets with the end face that ejects push pedal (302), and the described push pedal gland (306) that ejects is by connecting bolt (308) and eject push pedal (302) and be fixedly linked;
One mode transfer gear wheel (403), this mode transfer gear wheel (403) is meshed with driving gear (402), centre bore one end of driving gear (402) is sleeved on the output shaft of the mode transfer motor (6) that drives its rotation, the other end of the centre bore of driving gear (402) is sleeved on the end of back shaft (404), the other end of back shaft (404) is installed in the bearing (405), and bearing (405) is fixedly mounted on the another side of portal frame (205).
2. servo driven type die casting machine according to claim 1 is characterized in that described oil pump (4) is gear pump, plunger displacement pump or screw pump.
3. servo driven type die casting machine according to claim 1, the oil inlet end of the die cylinder (5) in the reversal valve (HMV) of the output that it is characterized in that described oil pump (4) by check valve (DV1) and serial connection and the hydraulic pressure execution unit links to each other, the oil outlet end of die cylinder (5) is by reversal valve (HMV, TMV) input with mode transfer motor (6) links to each other, the output of mode transfer motor (6) now by reversal valve (TMV) respectively with eject oil cylinder (7), the oil inlet end of pressurizing cylinder (8) and injection mechanism hoist cylinder (9) links to each other, pressurizing cylinder (8) oil outlet end links to each other with the oil inlet end of injection oil cylinder (10), ejects oil cylinder (7), the oil outlet end of injection mechanism hoist cylinder (9) and injection oil cylinder (10) links to each other with fuel tank (11); At described die cylinder (5), eject on oil cylinder (7) and the injection oil cylinder (10) position sensor all be installed.
4. servo driven type die casting machine according to claim 1 is characterized in that being processed with radially screw (208) on the described nut (204), radially in the screw (208) locking sunk screw is installed.
5. servo driven type die casting machine according to claim 1 is characterized in that described half snap ring (305) is arranged in the installation groove (309) that ejects in the push pedal (302).
6. servo driven type die casting machine according to claim 1, it is characterized in that described back shaft (404) is provided with positioning boss (407), and the width of positioning boss (407) is less than the gap between mode transfer gear wheel (403) and the portal frame (205), and the external diameter of positioning boss (407) is greater than the center-hole diameter or the brearing bore diameter of driving gear (402).
7. servo driven type die casting machine according to claim 1, it is characterized in that described injection pull bar (203) is made up of the polished rod section (501) in the middle of being positioned at and the thread segment (502) at two ends, be provided with escape (503) between thread segment (502) and the polished rod section (501), described polished rod section (501) goes up near escape (503) position and is provided with off-load groove (504), and the two ends of described off-load groove (504) and polished rod section (501) are connected smoothly by cambered surface.
8. servo driven type die casting machine according to claim 7 is characterized in that the degree of depth of the degree of depth of described off-load groove (504) greater than escape (503).
9. servo driven type die casting machine according to claim 7 is characterized in that the width of described off-load groove (504) is not less than the twice of escape (503) width.
10. servo driven type die casting machine according to claim 7 is characterized in that the quantity of described off-load groove (504) is one or two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201466246U CN202071309U (en) | 2011-05-10 | 2011-05-10 | Servo drive type die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201466246U CN202071309U (en) | 2011-05-10 | 2011-05-10 | Servo drive type die casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN202071309U true CN202071309U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201466246U Expired - Lifetime CN202071309U (en) | 2011-05-10 | 2011-05-10 | Servo drive type die casting machine |
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| CN (1) | CN202071309U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601949A (en) * | 2011-05-10 | 2012-07-25 | 宜兴市佳晨压铸机制造有限公司 | Servo driving type die-cast machine |
| CN104169026A (en) * | 2012-03-09 | 2014-11-26 | 东洋机械金属株式会社 | Die-casting machine and control method for detecting die-casting machine |
| CN115213377A (en) * | 2022-06-09 | 2022-10-21 | 宁波保税区海天智胜金属成型设备有限公司 | System and method for diagnosing cooling damping of pump station of die casting machine |
-
2011
- 2011-05-10 CN CN2011201466246U patent/CN202071309U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601949A (en) * | 2011-05-10 | 2012-07-25 | 宜兴市佳晨压铸机制造有限公司 | Servo driving type die-cast machine |
| CN102601949B (en) * | 2011-05-10 | 2014-04-09 | 宜兴市佳晨压铸机制造有限公司 | Servo driving type die-cast machine |
| CN104169026A (en) * | 2012-03-09 | 2014-11-26 | 东洋机械金属株式会社 | Die-casting machine and control method for detecting die-casting machine |
| CN115213377A (en) * | 2022-06-09 | 2022-10-21 | 宁波保税区海天智胜金属成型设备有限公司 | System and method for diagnosing cooling damping of pump station of die casting machine |
| CN115213377B (en) * | 2022-06-09 | 2024-04-19 | 宁波保税区海天智胜金属成型设备有限公司 | Cooling damping diagnosis system and method for pump station of die casting machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111214 Effective date of abandoning: 20140409 |
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| RGAV | Abandon patent right to avoid regrant |