CN217968244U - Mold locking hydraulic system for injection molding machine - Google Patents
Mold locking hydraulic system for injection molding machine Download PDFInfo
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- CN217968244U CN217968244U CN202220232724.9U CN202220232724U CN217968244U CN 217968244 U CN217968244 U CN 217968244U CN 202220232724 U CN202220232724 U CN 202220232724U CN 217968244 U CN217968244 U CN 217968244U
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Abstract
The utility model relates to the technical field of fluid working systems, in particular to a mode locking hydraulic system for an injection molding machine, which comprises a mode locking mechanism; the clamping mechanism includes: a mold locking power unit and a mold locking oil cylinder; the mode locking power unit comprises: the direct insertion type motor, the integrated oil pump and the mode locking function valve plate are detachably connected in sequence; an oil outlet and an oil suction port of the integrated oil pump are respectively connected with different first expansion interfaces of the mode locking function valve plate; the mold opening valve on the mold locking function valve plate is connected with the first oil port of the mold locking oil cylinder through a first oil path, and the second oil port is connected through a second oil path. This scheme is with the integrated mode locking power pack of modular of complicated oil circuit, adopts the modularized design to motor, oil pump and valve plate, and the oil circuit that will be complicated originally is integrated to each module, connects through setting up the connector between the module, reduces the connecting part, simplifies the pipeline, shortens the tube side, solves by connecting part many, the pipeline is complicated and the tube side length and the various problems that cause.
Description
Technical Field
The utility model relates to a fluid operating system technical field specifically is a mode locking hydraulic system for injection molding machine.
Background
An injection molding machine, also known as an injection molding machine or an injection molding machine, is a main molding device for molding thermoplastic plastics or thermosetting plastics into plastic products of various shapes by using a plastic molding mold. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. An injection molding machine generally comprises an injection system, a mold closing system, a hydraulic system, an electrical control system, a lubricating system, a heating and cooling system, a safety monitoring system and the like. The hydraulic system provides power for various actions of the injection molding machine according to technological process requirements, and meets the requirements of pressure, speed, position control and the like required by actions of all parts of the injection molding machine. The hydraulic system mainly comprises various hydraulic components and hydraulic auxiliary components, wherein the clamping mechanism mainly comprises: the mould locking device comprises a fixed mould plate, a movable mould plate, a mould locking oil cylinder and a mould locking power unit.
The mold locking power unit provides power for the mold locking oil cylinder, and a piston rod in the mold locking oil cylinder drives the mold plate to move so as to lock and open the mold. The existing mode locking power unit is connected with a motor, an oil pump, an oil storage tank and various valve plates through various joints, flanges, pipelines and/or pipe joints, so that the problems of more connecting parts, complex pipelines and long pipeline distance are caused; and the hydraulic system of some equipment adopts the open-loop oil circuit, and the open-loop oil circuit needs to adopt the open oil tank of large capacity, and the volume is great, and area is great, and consequently open oil tank keeps away from the mode locking hydro-cylinder and sets up, and the oil pump is located open oil tank department, and consequently the pipeline of oil pump connection to the mode locking hydro-cylinder is very long, need pass through hose connection between the part moreover, because the compressible characteristic of hydraulic oil, the elasticity that hose connection has to and the reason of pipeline overlength, the overshoot phenomenon appears easily.
In summary, the existing mold locking hydraulic system needs a larger installation space due to a plurality of connecting parts, a complex pipeline and a long pipe pass, the installation workload is increased, the energy loss is large when the mold locking power unit provides power, the heat productivity is also large, the cost is increased, and the overshoot phenomenon is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model provides a mode locking hydraulic system for injection molding machine can reduce connecting element, simplifies the pipeline, shortens the tube side to solve by connecting element many, the pipeline is complicated and the long and other problems that cause of tube side.
The utility model provides a following basic scheme: a mode locking hydraulic system for injection molding machine, including clamping mechanism, clamping mechanism includes: a mold locking power unit and a mold locking oil cylinder;
the mode locking hydro-cylinder includes: a first oil port and a second oil port;
the mode locking power unit comprises: the motor, the oil pump and the mold locking function valve plate are connected in sequence;
the motor is used for driving the oil pump;
a plurality of expandable oil way holes are formed in the oil pump; the expandable oil passage hole includes: an oil outlet and an oil suction opening;
a first expansion oil way is arranged in the mode locking function valve plate, a plurality of first expansion interfaces communicated with the first expansion oil way are arranged on the mode locking function valve plate, and the first expansion interfaces are connected with a die opening valve; the oil outlet and the oil suction port are respectively connected with different first expansion interfaces;
and the die opening valve is connected with a first oil port of the die locking oil cylinder through a first oil path, and is connected with a second oil port of the die locking oil cylinder through a second oil path.
The basic scheme has the beneficial effects that: the motor is directly inserted into the oil pump, the oil way is integrated in the oil pump, and a plurality of expandable oil way holes are formed in the oil pump and connected with the mode locking function valve plate; the mould locking function valve plate is internally provided with a first expansion oil way which is connected with an oil pump through a first expansion interface which is arranged on the mould locking function valve plate and is communicated with the first expansion oil way, and a mould opening valve arranged on the mould locking function valve plate is connected with a mould locking oil cylinder, so that the motor drives the oil pump to work, and the oil pump drives the mould locking oil cylinder to provide power, namely oil transportation and oil absorption, through the mould locking function valve plate and the mould opening valve thereof; compared with the oil pump in the prior art, various external pipelines and connecting parts are reduced;
a closed hydraulic oil path is formed between the die sinking valve and the oil suction port of the oil pump through the first expansion oil path, the die sinking valve, the first oil path, the die locking oil cylinder, the second oil path and the oil suction port, compared with the existing open oil path, a large-scale open oil tank is cancelled, the oil pump is not arranged far away from the die locking oil cylinder, the pipeline is effectively shortened, and the oil quantity in the pipeline is reduced; therefore, the defects that due to the compressible characteristic of the oil, the hose connection has elasticity, the pipeline is too long, the dynamic load change is large, and the overshoot phenomenon is easy to occur are overcome;
motor in this scheme, oil pump and valve plate adopt the modularized design, will originally during complicated oil circuit is integrated to each module, connect through setting up the connector between the module, thereby reduce connecting element, simplify the pipeline, shorten the tube side, it is many to solve by connecting element, the pipeline is complicated and the tube side is long and the bigger installation space of needs that causes, the installation work volume has also increased, mode locking power pack is when providing power, energy loss is just big, calorific capacity is also big, make the cost increase, and the problem of overshoot phenomenon appears easily.
Further, a plurality of first mounting holes are formed in the oil pump, and a plurality of second mounting holes are formed in the mode locking function valve plate;
the oil pump is fixedly connected with the mold locking function valve plate through the first mounting hole and the second mounting hole;
a basic valve plate is connected between the oil pump and the mold locking function valve plate;
a second expansion oil way is arranged in the base valve plate, and a plurality of second expansion interfaces communicated with the second expansion oil way and a plurality of third mounting holes are formed in the base valve plate;
the oil outlet and the oil suction port are respectively connected with different second expansion interfaces, and the oil pump and the base valve plate are fixed through the first mounting hole and the third mounting hole;
and the base valve plate and the mold locking function valve plate are fixedly connected through a second mounting hole and a third mounting hole, and the base valve plate and the mold locking function valve plate are respectively arranged on the contact surface in a butt joint mode through a second expansion interface and a first expansion interface.
Has the advantages that: be connected with basic valve plate between oil pump and the mode locking function valve plate, oil pump and mode locking function valve plate can be connected to second expansion interface, the installation of some basic devices of being convenient for simultaneously, for example pressure sensor etc to simplify the installation of corresponding device on oil pump and the mode locking function valve plate, make the mode locking function valve plate only use as the function valve plate.
Furthermore, an overflow pipeline and a negative pressure compensation pipeline are arranged between the first expansion oil passages respectively connected with the first expansion interface connected with the oil outlet and the first expansion interface connected with the oil suction port in the mode locking function valve plate, an overflow valve is arranged on the overflow pipeline, and a check valve is arranged on the pressure compensation pipeline.
Has the beneficial effects that: a part of a first expansion oil way in the mode locking function valve plate is used as an oil inlet pipeline, a part of the first expansion oil way is used as an oil return pipeline, a specific first expansion oil way connected with a first expansion interface connected with an oil outlet is used as an oil inlet pipeline, a first expansion oil way connected with a first expansion interface connected with an oil suction port is used as an oil return pipeline, when high-pressure impact load occurs in a closed hydraulic oil way or pressure sensor faults in a hydraulic system cause pressure out of control, hydraulic oil in the oil inlet pipeline can return to the low-pressure oil return pipeline through an overflow valve, impact load resistance is realized during the brought benefits, the hydraulic system is protected, and meanwhile, ultrahigh pressure generated when the pressure sensor faults cause damage to hydraulic elements. The negative pressure compensation pipeline is used for performing negative pressure compensation on the oil inlet pipeline, and the arrangement of the negative pressure compensation pipeline provides a mounting position for the one-way valve, so that the one-way valve is convenient to mount.
Further, the first expansion interface is also connected with a die sinking buffer valve and a die sinking buffer regulating valve;
the die sinking valve is used for controlling the state of fluid in the die locking oil cylinder;
the die opening buffer valve is used for adjusting the flow of fluid in the die locking oil cylinder; reducing the flow when the mold opening is fast in place;
and the die opening buffer regulating valve is used for regulating the buffer speed.
Has the advantages that: the die opening valve controls the state of fluid in the die locking oil cylinder, so that the die locking hydraulic system performs die opening and die locking, and the die opening buffer valve and the die opening buffer regulating valve perform corresponding regulation on die locking and die opening, thereby ensuring the effect of die locking and die opening.
Further, the first expansion interface includes: the oil outlet connector, the oil absorption connector, the valve group mounting port, the ejection removing and die adjusting pressure oil port, the ejection and die adjusting oil return port, the die locking port and the die opening port;
the mold opening valve is a reversing valve which is used for reversing a closed hydraulic oil path,
the reversing valve is arranged on the mold locking function valve plate through a valve group mounting port, and a port of the reversing valve is respectively communicated with the oil outlet and the oil suction port through an oil outlet connecting port and an oil suction connecting port and is respectively communicated with the first oil port and the second oil port through a mold locking port and a mold opening port;
the ejection removing and die adjusting pressure oil port and the ejection and die adjusting oil return port are both used for connecting other extended function valve plates.
Has the beneficial effects that: the reversing valve is used for reversing a closed hydraulic oil path, and generally comprises four ports, for example, a first oil path is communicated with a rodless cavity of an oil cylinder, a second oil path is communicated with a rod cavity of the oil cylinder, when two ports of the reversing valve are communicated with an oil outlet and the first oil path, and the other two ports are communicated with an oil suction port and the second oil path, the rodless cavity of the oil cylinder takes in oil and the rod cavity takes out oil, otherwise, when the two ports of the reversing valve are communicated with the oil outlet and the second oil path, and the other two ports are communicated with the oil suction port and the first oil path, the rodless cavity of the oil cylinder takes out oil and the rod cavity takes in oil, so that the reversing of the hydraulic oil path is realized, a mold locking hydraulic system can control a mold locking oil cylinder to execute different actions in turn, and the closed-loop control of pressure and speed regulation is realized.
The ejection and die adjustment pressure oil port and the ejection and die adjustment oil return port are used for being connected with other expansion function valve plates, mainly connecting the ejection function valve plate or the die adjustment function valve plate, and certainly connecting the ejection function module or the die adjustment function module and directly superposing the ejection function module or the die adjustment function module on the die locking function module.
Further, the motor is an in-line motor; the in-line motor includes: the motor and the compact direct-insertion connecting shaft mechanism;
compact is cut straightly and is connected a mechanism includes: the motor shaft, the inner gear sleeve, the elastic body and the fixed retainer ring;
an external gear sleeve structure is arranged on the motor shaft; the inner gear sleeve is provided with an inner key hole; the outer gear sleeve of the motor shaft is correspondingly clamped into the inner gear sleeve, a plurality of elastic bodies are arranged in gaps of the clamping, the fixed check ring is arranged on the inner gear sleeve and opposite to the clamped surface, a plurality of fixed holes are formed in the inner gear sleeve and the fixed check ring, and the fixed holes are fixed by connecting and fixing screws penetrating through the fixed holes.
Has the advantages that: the direct-insert motor is directly installed on standard parts such as protruding shafts of an oil pump and the like, and flanges are fixed and locked.
Further, the oil pump is an integrated oil pump; the integrated oil pump includes: a pump body;
the pump body, includes: the pump comprises a rear cover, a pump shell, a front cover and a pump shaft; fixedly connecting the pump body and the rear covers and the front covers at the two ends of the pump body through fastening screws;
the front cover is provided with a flange plate mounting structure for assembling and connecting the direct-insertion type motor;
the pump shell is provided with an expansion mounting surface, and the expansion mounting surface is provided with a fastening threaded port, an expansion oil suction port and a pressure output port;
the fastening threaded port is used for mounting a valve plate with an extended function or an oil suction device;
the expanded oil suction port is connected with an oil suction area of the working cavity in the pump body, and the pressure output port is connected with an oil outlet area of the working area in the pump body; the expansion oil suction port and the pressure output port are used for being externally connected with other pipelines or being connected with an expansion function valve plate;
the rear cover is provided with an expansion surface, and the expansion surface is provided with a plurality of auxiliary connecting ports for connecting the valve plate with the expansion function;
the auxiliary connection port includes: the pressure cavity interface, the oil return port, the pressure cavity connecting port and the basic valve plate expansion port;
the pressure cavity interface and the oil return port are used for being externally connected with an expansion pipeline;
the pressure cavity connecting port is used for installing relevant parts for pressure monitoring and comprises: a pressure gauge or sensor;
the basic valve plate expansion port is used for connecting the expansion function valve plate;
the oil suction port, the oil outlet and the first mounting hole are formed in the side face, far away from the pump shell, of the rear cover, and the oil suction port is communicated with the expanded oil suction port and the oil return port through an internal oil return pipeline; the oil outlet is communicated with the pressure output port, the pressure cavity interface and the pressure cavity connecting port through an oil outlet pipeline inside.
Has the advantages that: extended function valve plates include, but are not limited to: a base valve plate and a mold locking function valve plate; by the integrated concept, the oil pump and the valve plate are not scattered at different installation positions any more, the total weight of the metal material used after the oil pump and the valve plate are combined can be reduced by 30-50% compared with the distributed design, the integrated design is small and compact, the metal material is saved, the pipeline connecting parts between the valve plate and the valve plate are reduced, and the oil leakage risk point is reduced; through the modular concept, make the application extension of hydraulic pressure oil circuit become can standardized production, hydraulic power's manufacturing cost and production efficiency can effectively be improved, like the standardized installation concept of hydrovalve, can evolve into the concept of the standardized production of function valve plate module and application of certain degree, need control a plurality of hydraulic power output control just can superpose a plurality of function valve plates, need not complicated valve plate pipeline design, direct extension stack can be realized, need not too much specification model, make things convenient for the industrialization volume production, material saving consumption, social economic benefits is showing.
Further, be connected with oil storage function valve plate on fastening screw thread mouth, extension oil suction opening and the pressure delivery outlet, be connected with the detachable batch oil tank on the oil storage function valve plate, batch oil tank intercommunication extension oil suction opening and pressure delivery outlet.
Has the beneficial effects that: the setting of oil storage function valve plate can realize modular installation batch oil tank for the installation of batch oil tank is dismantled very simple and conveniently.
Drawings
FIG. 1 is an exploded view of a mold locking power unit in an embodiment of a mold locking hydraulic system for an injection molding machine according to the present invention;
fig. 2 is a schematic structural diagram of a mold locking power unit in an embodiment of the mold locking hydraulic system for an injection molding machine according to the present invention;
FIG. 3 is an exploded view of a compact direct-insert coupling mechanism in an embodiment of a mold-locking hydraulic system for an injection molding machine according to the present invention;
fig. 4 is a schematic structural diagram of an integrated oil pump in an embodiment of a mode locking hydraulic system for an injection molding machine according to the present invention;
FIG. 5 is an exploded view of an integrated oil pump in an embodiment of a mold locking hydraulic system for an injection molding machine according to the present invention;
fig. 6 is a schematic structural diagram of a mold locking function valve plate in an embodiment of a mold locking hydraulic system for an injection molding machine according to the present invention;
fig. 7 is a side view of a mold locking power unit in an embodiment of a mold locking hydraulic system for an injection molding machine according to the present invention;
fig. 8 is a schematic diagram of the connection between the mold opening valve and the mold locking cylinder in the embodiment of the mold locking hydraulic system for an injection molding machine according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the oil storage type mold clamping device comprises an in-line motor 1, an integrated oil pump 2, a base valve plate 3, a mold clamping function valve plate 4, an oil storage function valve plate 5, a mold clamping oil cylinder 6, a motor 101, a motor shaft 102, an outer gear sleeve structure 103, an inner gear sleeve 104, an elastic body 105, a fixing retainer 106, a rear cover 201, a pump shell 202, a front cover 203, a pump shaft 204, a fastening threaded port 205, an expansion oil suction port 206, a pressure output port 207, a pressure chamber interface 208, an oil return port 209, a pressure chamber connecting port 2010, a base valve plate expansion port 2011, an oil outlet 2012, an oil suction port 2013, a first mounting hole 2014, a second expansion interface 301, a first expansion interface 401, a mold opening valve 402, a mold opening buffer valve 403, a mold opening buffer regulating valve 404, a mold ejection and mold adjustment pressure oil port 405, an ejection and mold adjustment oil return port 406, a mold clamping port 407, a mold opening 408, an oil outlet connecting port 409, an oil suction connecting port 4010, a second mounting hole 4011, an oil storage tank 501, a first oil path 601 and a second oil path 602.
The embodiment is basically as shown in the attached figure 1:
a mold locking hydraulic system for an injection molding machine comprises a mold locking mechanism; clamping mechanism includes: a mold locking power unit and a mold locking oil cylinder 6;
mode locking hydro-cylinder 6 includes: a first oil port and a second oil port;
a mode-locked power unit comprising: the direct-insertion type motor 1, the integrated oil pump 2, the base valve plate 3 and the mode locking function valve plate 4 are detachably connected in sequence;
the direct plug-in type motor 1 is used for driving the integrated oil pump 2; specifically, as shown in fig. 2, the in-line motor 1 includes: a motor 101 and a compact direct-insertion coupling shaft mechanism;
compact cut straightly even axle mechanism includes: a motor shaft 102, an inner gear sleeve 104, an elastic body 105 and a fixed retainer 106;
as shown in fig. 3, the motor shaft 102 is provided with an external gear sleeve structure 103; the inner gear sleeve 104 is provided with an inner key hole; the outer gear sleeve of the motor shaft 102 is correspondingly clamped into the inner gear sleeve 104, a plurality of elastic bodies 105 are arranged in a clamped gap, a fixed check ring 106 is arranged on the opposite surface of the clamped surface of the inner gear sleeve 104, a plurality of fixing holes are formed in the inner gear sleeve 104 and the fixed check ring 106, and connecting fixing screws are used for penetrating through the fixing holes to fix the inner gear sleeve and the fixed check ring; when the torque of the motor 101 is output, the torque of the motor shaft 102 is transmitted to the elastic body 105 through the outer gear sleeve on the motor shaft 102, then transmitted to the contact surface of the inner gear sleeve 104 through the elastic body 105, and finally transmitted to the integrated oil pump 2 through the oil pump shaft 204 connected with the inner gear sleeve 104 through a flat key or a spline; the direct-insert motor 1 is directly installed on standard parts such as an oil pump and the like, flanges are fixed and locked, the direct-insert motor 1 is short and compact in size, rapid and convenient to install, and the interior of the direct-insert motor is in an elastic body 105 micro flexible connection mode, so that the direct-insert motor is impact-resistant and low in noise.
The integrated oil pump 2 is provided with a plurality of expandable oil way holes and a first mounting hole 2014; an expandable oil passage hole, comprising: an oil outlet 2012 and an oil suction opening 2013; specifically, as shown in fig. 4 and 5, the integrated oil pump 2 includes: a pump body;
a pump body, comprising: a rear cover 201, a pump housing 202, a front cover 203, and a pump shaft 204; fixedly connecting the pump body and the rear cover 201 and the front cover 203 at the two ends of the pump body through fastening screws;
the front cover 203 is provided with a flange plate mounting structure for assembling and connecting the direct plug-in motor 1; in the embodiment, the flange plate mounting structure is flange positioning flat key connection, and the flange fixing screws are mounted in hidden embedded slots;
the pump housing 202 has a working member mounted therein, including but not limited to: wheel pumps, vane pumps, plunger pumps, gerotor pumps or screw pumps; an expansion mounting surface is arranged on the pump shell 202, and a fastening threaded port 205, an expansion oil suction port 206 and a pressure output port 207 are arranged on the expansion mounting surface;
a fastening threaded port 205 for mounting an extended function valve plate or an oil suction device; in particular, for mounting fastening screws;
the expanded oil suction port 206 is connected with an oil suction area of a working cavity in the pump body, and the pressure output port 207 is connected with an oil outlet area of the working area in the pump body; an expansion oil suction port 206 and a pressure output port 207 for connecting with other pipelines or connecting with an expansion function valve plate; the fastening threaded port 205, the expansion oil suction port 206 and the pressure output port 207 are connected with an oil storage function valve plate 5, the oil storage function valve plate 5 is connected with a detachable oil storage tank 501, and the oil storage tank 501 is communicated with the expansion oil suction port 206 and the pressure output port 207. In this embodiment, the extended oil suction port 206 is a process hole and is not connected.
The rear cover 201 is provided with an expansion surface, and the expansion surface is provided with a plurality of auxiliary connecting ports for connecting the valve plate with the expansion function; auxiliary connection mouth includes: a pressure chamber interface 208, an oil return port 209, a pressure chamber connecting port 2010 and a base valve plate expansion port 2011; the expansion surface in this embodiment is the peripheral side surface of the back cover 201, and the pressure chamber interface 208 and the oil return port 209 are arranged on the peripheral side surface on the left side; the pressure chamber connection port 2010 and a part of the expansion port of the base valve plate 3 are provided on the peripheral side surface of the top portion;
the pressure cavity interface 208 and the oil return port 209 are used for externally connecting an extension pipeline to externally connect a separate power station, namely, the pressure cavity and the oil return cavity are connected, and in the embodiment, a pressure gauge is connected for visually measuring the pressure;
the pressure chamber connecting port 2010 is used for installing relevant parts for pressure monitoring, and comprises: a pressure gauge or sensor;
a base valve plate extension port 2011 for connecting an extended function valve plate; the valve plate is used for installing the basic valve plate 3 in the embodiment, and the basic valve plate 3 can be provided with a pipe joint or a hydraulic component which is to be installed on the extended function valve plate, so that the installation space of the extended function valve plate is saved, the extended function valve plate can be designed to be more compact, and materials are saved;
the oil suction opening 2013, the oil outlet 2012 and the first mounting hole 2014 are arranged on the side surface, far away from the pump shell 202, of the rear cover 201, and the oil suction opening 2013, the expanded oil suction opening 206 and the oil return opening 209 are communicated through an internal oil return pipeline; the oil outlet 2012, the pressure output port 207, the pressure chamber interface 208 and the pressure chamber connecting port 2010 are communicated through an internal oil outlet pipeline.
A second expansion oil way is arranged in the base valve plate 3, and a plurality of second expansion interfaces 301 and a plurality of third mounting holes which are communicated with the second expansion oil way are arranged on the base valve plate 3; the oil outlet 2012 and the oil suction port 2013 are respectively connected with different second expansion interfaces 301, namely an oil outlet connection port 409 and an oil suction connection port 4010, and the integrated oil pump 2 and the base valve plate 3 are fixed through the first mounting hole 2014 and the third mounting hole;
a first expansion oil way is arranged in the mode locking function valve plate 4, and as shown in fig. 6, a plurality of first expansion interfaces 401 and a plurality of second mounting holes 4011 which are communicated with the first expansion oil way are arranged on the mode locking function valve plate 4; the base valve plate 3 and the mode locking function valve plate 4 are fixedly connected through a second mounting hole 4011 and a third mounting hole, and the second expansion interface 301 and the first expansion interface 401 which are respectively located on the contact surface are in butt joint arrangement. If the base valve plate 3 is not arranged between the integrated oil pump 2 and the mode locking function valve plate 4, the oil outlet 2012 and the oil suction port 2013 are respectively connected with different first expansion interfaces 401, and the integrated oil pump 2 and the mode locking function valve plate 4 are fixed through the first mounting hole 2014 and the second mounting hole 4011. The basic valve plate 3 is provided to facilitate the installation of some basic devices, such as a pressure sensor, etc., thereby simplifying the installation of corresponding devices on the integrated oil pump 2 and the mold locking function valve plate 4, and enabling the mold locking function valve plate 4 to be used only as a function valve plate.
The first expansion interface 401 is connected with a mold opening valve 402, a mold opening buffer valve 403 and a mold opening buffer regulating valve 404;
the die opening valve 402 is connected with a first oil port of the die locking oil cylinder 6 through a first oil path 601, and is connected with a second oil port of the die locking oil cylinder 6 through a second oil path 602; the mold opening valve 402 is used for controlling the state of fluid in the mold locking oil cylinder 6;
opening the die cushion valve 403 to regulate the flow rate of the fluid in the die locking oil cylinder 6; reducing the flow when the mold opening is fast in place;
and a buffering adjusting valve 404 for adjusting the buffering speed.
The first expansion interface 401 includes: an oil outlet connecting port 409, an oil suction connecting port 4010, a valve group mounting port, an ejection removing and mold adjusting pressure oil port 405, an ejection and mold adjusting oil return port 406, a mold locking port 407 and a mold opening port 408;
the oil outlet connecting port 409 and the oil suction connecting port 4010 are respectively used for connecting an oil outlet 2012 and an oil suction port 2013;
a valve group mounting port for mounting a mold opening valve 402, a mold opening buffer valve 403 and a mold opening buffer regulating valve 404;
the ejection-removing and die-adjusting pressure oil port 405 and the ejection-adjusting and die-adjusting oil return port 406 are used for connecting other extended function valve plates, mainly connecting an ejection function module or a die-adjusting function module, certainly connecting the ejection function module or the die-adjusting function module and directly superposing the ejection function module or the die-adjusting function module on the die-locking function module, and the ejection-removing and die-adjusting pressure oil port 405 and the ejection-adjusting and die-adjusting oil return port 406 are arranged in the embodiment for connecting the movable ejection function module, so that the ejection function module is closer to an oil pump, and the pipe pass is reduced;
as shown in fig. 7, the mold clamping opening 407 and the mold opening 408 are used for connecting with the first oil port and the second oil port;
as shown in fig. 8, the mold opening valve 402 is a reversing valve, the reversing valve is used for reversing a closed hydraulic oil path, the reversing valve is mounted on the mold locking function valve plate 4 through a valve set mounting port, a port of the reversing valve is respectively communicated with an oil outlet 2012 and an oil suction port 2013 through an oil outlet connecting port 409 and an oil suction connecting port 4010, and is respectively communicated with a first oil port and a second oil port through a mold locking port 407 and a mold opening 408; specifically, the reversing valve comprises four ports, the four ports are mounted on the mold locking function valve plate 4 through a valve group mounting port, two of the ports are respectively communicated with the oil outlet 2012 and the oil suction port 2013 through the oil outlet connecting port 409 and the oil suction connecting port 4010, and the other two ports are respectively communicated with the first oil port and the second oil port through the mold locking port 407 and the mold opening port 408; taking the case that the first oil path 601 is communicated with the rodless cavity of the oil cylinder, and the second oil path 602 is communicated with the rod cavity of the oil cylinder, when two ports of the reversing valve are communicated with the oil outlet 2012 and the first oil path 601, and the other two ports are communicated with the oil inlet 2013 and the second oil path 602, the rodless cavity of the oil cylinder takes in oil and the rod cavity takes out oil, otherwise, when the two ports of the reversing valve are communicated with the oil outlet 2012 and the second oil path 602, and the other two ports are communicated with the oil inlet 2013 and the first oil path 601, the rodless cavity of the oil cylinder takes in oil and the rod cavity takes in oil, thereby realizing the reversing of the hydraulic oil path, and the mold locking hydraulic system can alternately control the mold locking oil cylinder 6 to execute different actions and realize the closed-loop control of pressure and speed regulation;
defining four ports of the reversing valve as a P-end port, a T-end port, an A-end port and a B-end port respectively, wherein the P-end port is communicated with an oil outlet 2012, the T-end port is communicated with an oil suction port 2013, the A-end port is communicated with a mold locking port 407, and the B-end port is communicated with a mold opening 408; specifically, the first extension oil passage in the present embodiment includes: an oil inlet pipeline, an oil return pipeline, a mold locking pipeline and a mold opening pipeline; go out oil connector 409, go ejecting and transfer the valves installing port of mould pressure hydraulic fluid port 405 and part and advance oil pipe way intercommunication, wherein the valves installing port includes: a P-end interface mounting interface; oil absorption connector 4010, ejecting and transfer mould oil return port 406 and partial valves installing port and oil return line intercommunication, wherein the valves installing port includes: an opening die buffer valve 403 mounting port, an opening die buffer regulating valve 404 and a T-end interface mounting port; the port a and the port B of the mold opening valve 402 are respectively communicated with the mold locking port 407 and the mold opening port 408 through a mold locking pipeline and a mold opening pipeline.
The oil outlet 2012 of the integrated oil pump 2 is communicated with the P-end interface through the base valve plate 3, the A-end interface is communicated with the first oil port of the mold locking oil cylinder 6 through the first oil path 601, the B-end interface is communicated with the second oil port of the mold locking oil cylinder 6 through the second oil path 602, and the T-end interface is communicated with the oil suction port 2013 of the integrated oil pump 2 through the base valve plate 3. A closed hydraulic oil path is formed between the die sinking valve 402 and the oil suction opening 2013 of the integrated oil pump 2 through the base valve plate 3, the first expansion oil path, the die sinking valve 402, the first oil path 601, the die locking oil cylinder 6, the second oil path 602 and the oil suction opening 2013.
A first expansion interface 401 connected with the oil outlet 2012 and a first expansion interface 401 connected with the oil suction port 2013 in the mode locking function valve plate 4, an overflow pipeline and a negative pressure compensation pipeline are arranged between first expansion oil passages respectively connected with the first expansion interface 401, an overflow valve is arranged on the overflow pipeline, and a check valve is arranged on the pressure compensation pipeline; one part of a first expansion oil way in the mode locking function valve plate 4 is used as an oil inlet pipeline, one part is used as an oil return pipeline, the specific first expansion oil way connected with the oil outlet connector 409 is used as an oil inlet pipeline, the first expansion oil way connected with the oil absorption connector 4010 and connected with the first expansion interface 401 is used as an oil return pipeline, when pressure is out of control due to high-pressure impact load or pressure sensor faults in the hydraulic system in a closed hydraulic oil way, hydraulic oil in the oil inlet pipeline can return to the low-pressure oil return pipeline through an overflow valve, impact resistance load is realized during brought benefits, the hydraulic system is protected, and meanwhile, ultrahigh pressure generated during pressure sensor faults is prevented to cause damage to a hydraulic element. The negative pressure compensation pipeline is used for performing negative pressure compensation on the oil inlet pipeline, and the arrangement of the negative pressure compensation pipeline provides a mounting position for the one-way valve, so that the one-way valve is convenient to mount.
The specific implementation process is as follows: when the mold is opened, the piston is pushed to move leftwards (taking fig. 1 as an example), the direct-insertion motor 1 runs to drive the integrated oil pump 2, hydraulic oil pumped by the integrated oil pump 2 enters the mold locking function valve plate 4 through the base valve plate 3 and the oil outlet connecting port and enters the mold opening valve 402 through the oil inlet pipeline and the P-end port, hydraulic oil in the mold opening valve 402 enters the first oil way 601 through the A-end port, hydraulic oil in the first oil way 601 enters the rodless cavity of the mold locking oil cylinder 6 through the first oil port, and hydraulic oil in the rodless cavity pushes the piston to move towards the rod cavity. Along with the movement of the piston, the hydraulic oil in the rod cavity enters the second oil path 602 through the second oil port, the hydraulic oil in the second oil path 602 enters the mold opening valve 402 through the B-end port, the hydraulic oil in the mold opening valve 402 enters the oil return pipeline through the T-end port, enters the integrated oil pump 2 through the oil suction connector 4010, the base valve plate 3 and the oil suction port 2013, enters the oil storage function valve plate 5 through the extended oil suction port 206, and then enters the oil storage tank 501.
During mode locking, the piston is pushed to move towards the right side, the direct-insertion motor 1 runs to drive the integrated oil pump 2, hydraulic oil pumped out by the integrated oil pump 2 enters the mode locking function valve plate 4 through the base valve plate 3 and the oil outlet connecting port, enters the die opening valve 402 through the oil inlet pipeline and the P-end port, hydraulic oil in the die opening valve 402 enters the second oil way 602 through the B-end port, hydraulic oil in the second oil way 602 enters the rod cavity of the mode locking oil cylinder 6 through the second oil port, and the hydraulic oil in the rod cavity pushes the piston to move towards the rodless cavity. Along with the movement of the piston, the hydraulic oil in the rodless cavity enters the first oil path 601 through the first oil port, the hydraulic oil in the first oil path 601 enters the mold opening valve 402 through the a-end port, the hydraulic oil in the mold opening valve 402 enters the oil return pipeline through the T-end port, enters the integrated oil pump 2 through the oil suction connector 4010, the base valve plate 3 and the oil suction port 2013, enters the oil storage function valve plate 5 through the extended oil suction port 206, and then enters the oil storage tank 501.
The hydraulic oil in the oil tank 501 enters the integrated oil pump 2 through the pressure output port 207. When the mold is locked and the piston moves for a certain stroke, because the oil return amount of the rod cavity is less than the oil amount required for pushing the piston, the oil amount insufficient for the oil suction opening 2013 is provided by the oil storage tank. On the contrary, when the mold is opened, because the oil return amount of the rodless cavity is larger than the oil inlet amount of the rod cavity, the unnecessary excess oil amount of the integrated oil pump 2 is absorbed by the oil storage tank.
The above description is only for the embodiment of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, so that those skilled in the art can know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the capability of applying the conventional experimental means before this date, and those skilled in the art can complete and implement the schemes in combination with their own capability, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A mode locking hydraulic system for injection molding machine, its characterized in that: including clamping mechanism, clamping mechanism includes: a mold locking power unit and a mold locking oil cylinder;
the mode locking hydro-cylinder includes: a first oil port and a second oil port;
the mode locking power unit comprises: the motor, the oil pump and the mode locking function valve plate are connected in sequence;
the motor is used for driving the oil pump;
a plurality of expandable oil way holes are formed in the oil pump; the expandable oil passage hole includes: an oil outlet and an oil suction opening;
a first expansion oil way is arranged in the mode locking function valve plate, a plurality of first expansion interfaces communicated with the first expansion oil way are arranged on the mode locking function valve plate, and the first expansion interfaces are connected with a die opening valve; the oil outlet and the oil suction port are respectively connected with different first expansion interfaces;
and the die opening valve is connected with a first oil port of the die locking oil cylinder through a first oil path, and is connected with a second oil port of the die locking oil cylinder through a second oil path.
2. The mold-locking hydraulic system for an injection molding machine according to claim 1, characterized in that:
the oil pump is provided with a plurality of first mounting holes, and the mode locking function valve plate is provided with a plurality of second mounting holes;
the oil pump is fixedly connected with the mold locking function valve plate through the first mounting hole and the second mounting hole;
a basic valve plate is connected between the oil pump and the mold locking function valve plate;
a second expansion oil way is arranged in the base valve plate, and a plurality of second expansion interfaces and a plurality of third mounting holes which are communicated with the second expansion oil way are arranged on the base valve plate;
the oil outlet and the oil suction port are respectively connected with different second expansion interfaces, and the oil pump and the base valve plate are fixed through the first mounting hole and the third mounting hole;
and the base valve plate and the mold locking function valve plate are fixedly connected through a second mounting hole and a third mounting hole, and the base valve plate and the mold locking function valve plate are respectively arranged on the contact surface in a butt joint mode through a second expansion interface and a first expansion interface.
3. The mold-locking hydraulic system for an injection molding machine according to claim 1, characterized in that: and an overflow pipeline and a negative pressure compensation pipeline are arranged between the first expansion oil ways respectively connected with the first expansion interface connected with the oil outlet and the first expansion interface connected with the oil suction port in the mode locking function valve plate, an overflow valve is arranged on the overflow pipeline, and a check valve is arranged on the pressure compensation pipeline.
4. The mold-locking hydraulic system for an injection molding machine according to claim 1, characterized in that: the first expansion interface is also connected with a die opening buffer valve and a die opening buffer regulating valve;
the die sinking valve is used for controlling the state of fluid in the die locking oil cylinder;
the mold opening buffer valve is used for adjusting the flow of fluid in the mold locking oil cylinder; reducing the flow when the mold opening is fast in place;
and the die opening buffer regulating valve is used for regulating the buffer speed.
5. The mold-locking hydraulic system for an injection molding machine according to claim 1, characterized in that: the first expansion interface includes: the oil outlet connector, the oil absorption connector, the valve group mounting port, the ejection removing and die adjusting pressure oil port, the ejection and die adjusting oil return port, the die locking port and the die opening port;
the mold opening valve is a reversing valve which is used for reversing a closed hydraulic oil path,
the reversing valve is arranged on the mold locking function valve plate through a valve group mounting port, and a port of the reversing valve is respectively communicated with the oil outlet and the oil suction port through an oil outlet connecting port and an oil suction connecting port and is respectively communicated with the first oil port and the second oil port through a mold locking port and a mold opening port;
the ejection removing and die adjusting pressure oil port and the ejection and die adjusting oil return port are both used for connecting other extended function valve plates.
6. The mold-locking hydraulic system for an injection molding machine according to claim 1, characterized in that: the motor is a direct-insertion motor; the in-line motor includes: the motor and the compact direct-insertion connecting shaft mechanism;
compact is cut straightly and is connected a mechanism includes: the motor shaft, the inner gear sleeve, the elastic body and the fixed retainer ring;
an outer gear sleeve structure is arranged on the motor shaft; the inner gear sleeve is provided with an inner key hole; the outer gear sleeve of the motor shaft is correspondingly clamped into the inner gear sleeve, a plurality of elastic bodies are arranged in gaps of the clamping, the fixed check ring is arranged on the inner gear sleeve and opposite to the clamped surface, a plurality of fixed holes are formed in the inner gear sleeve and the fixed check ring, and the fixed holes are fixed by connecting and fixing screws penetrating through the fixed holes.
7. The mold-locking hydraulic system for an injection molding machine according to claim 1, wherein: the oil pump is an integrated oil pump; the integrated oil pump includes: a pump body;
the pump body, includes: the pump comprises a rear cover, a pump shell, a front cover and a pump shaft; fixedly connecting the pump body and the rear covers and the front covers at the two ends of the pump body through fastening screws;
the front cover is provided with a flange plate mounting structure for assembling and connecting the direct-insertion type motor;
the pump shell is provided with an expansion mounting surface, and the expansion mounting surface is provided with a fastening threaded port, an expansion oil suction port and a pressure output port;
the fastening threaded port is used for mounting an extended function valve plate or an oil suction device;
the extended oil suction port is connected with an oil suction area of the working cavity in the pump body, and the pressure output port is connected with an oil outlet area of the working area in the pump body; the expansion oil suction port and the pressure output port are used for being externally connected with other pipelines or being connected with the expansion function valve plate;
the rear cover is provided with an expansion surface, and the expansion surface is provided with a plurality of auxiliary connecting ports for connecting the valve plate with the expansion function;
the auxiliary connection port includes: the pressure cavity connector, the oil return port, the pressure cavity connector and the basic valve plate expansion port;
the pressure cavity interface and the oil return port are used for being externally connected with an expansion pipeline;
the pressure cavity connecting port is used for installing relevant parts for pressure monitoring and comprises: a pressure gauge or sensor;
the basic valve plate expansion port is used for connecting an expansion function valve plate;
the oil suction port, the expanded oil suction port and the oil return port are communicated through an internal oil return pipeline; the oil outlet is communicated with the pressure output port, the pressure cavity interface and the pressure cavity connector through an internal oil outlet pipeline.
8. The mold-locking hydraulic system for an injection molding machine according to claim 7, characterized in that: the fastening threaded port, the expansion oil suction port and the pressure output port are connected with an oil storage function valve plate, the oil storage function valve plate is connected with a detachable oil storage tank, and the oil storage tank is communicated with the expansion oil suction port and the pressure output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220232724.9U CN217968244U (en) | 2022-01-27 | 2022-01-27 | Mold locking hydraulic system for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220232724.9U CN217968244U (en) | 2022-01-27 | 2022-01-27 | Mold locking hydraulic system for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217968244U true CN217968244U (en) | 2022-12-06 |
Family
ID=84253317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220232724.9U Active CN217968244U (en) | 2022-01-27 | 2022-01-27 | Mold locking hydraulic system for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217968244U (en) |
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2022
- 2022-01-27 CN CN202220232724.9U patent/CN217968244U/en active Active
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