CN114012062A - Moving die - Google Patents
Moving die Download PDFInfo
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- CN114012062A CN114012062A CN202111207085.7A CN202111207085A CN114012062A CN 114012062 A CN114012062 A CN 114012062A CN 202111207085 A CN202111207085 A CN 202111207085A CN 114012062 A CN114012062 A CN 114012062A
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- pressure
- passageway
- movable mould
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- 230000007704 transition Effects 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 8
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 abstract description 55
- 239000007788 liquid Substances 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 16
- 239000007924 injection Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 16
- 238000005266 casting Methods 0.000 description 13
- 238000004512 die casting Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
Abstract
The utility model relates to a movable mould, it includes the movable mould core, movable mould frame and pressure sensor, it has first passageway to run through to open inside the movable mould core, it has the second passageway to open in the movable mould frame, first passageway and second passageway intercommunication, and swing joint has the ejector pin in first passageway and the second passageway, the opening at first passageway both ends is seted up respectively in one side that the movable mould core is close to the movable mould frame and the movable mould core one side of keeping away from the movable mould frame, pressure sensor locates on the movable mould frame, and be connected with the ejector pin, wherein, the one end that pressure sensor was kept away from to the ejector pin flushes with the opening of one side that the movable mould frame was kept away from to first passageway. This application is through when the shaping on the movable mould, and the metal liquid produces pressure to the ejector pin, and the real-time pressure of ejector pin transmission is exerted pressure sensor on, and pressure sensor receives the pressure value in real time, obtains accurate die cavity pressure value in real time, and the actual pressure that effective monitoring die cavity metal liquid received and the trend of changing help managing and controlling foundry goods quality.
Description
Technical Field
The application relates to the field of die casting, in particular to a movable die.
Background
At present, high-pressure casting is performed by solidifying and molding molten metal in a pressurized state, the pressure of the molten metal in a cavity is the cavity pressure, the higher the cavity pressure is in a reasonable range, the higher the density of a solidified casting is, and the fewer internal defects are, so that the cavity pressure is one of important parameters in a high-pressure casting process and needs to be monitored in a key mode. The principle of generating the cavity pressure is that hydraulic oil in an injection oil cylinder of a die casting machine pushes a piston, the piston pushes an injection rod, the other end of the injection rod is connected with an injection punch head, the punch head exerts pressure on molten metal, and the pressure is generated inside the molten metal.
In the related art, a pressure P1 of oil in a hydraulic cylinder of a die casting machine is detected, and a cross-sectional area S1 of a piston of the hydraulic cylinder is known, a pressure F1 of the piston against an injection rod is P1 × S1, a pressure F2 of an injection punch against molten metal is F1, and a cross-sectional area of the punch is S2, so that an internal pressure of the molten metal, namely a cavity pressure P2 is F2/S2 is F1/S2 is P1 × S1/S2.
However, the molten metal directly subjected to the pressure of the punch is only molten metal in a runner of the die and then is indirectly transferred to the molten metal in the cavity, generally, the width of a runner is narrow, the molten metal of the runner is locally solidified in advance, so that the pressure transmission is attenuated, the pressure of the actual cavity is smaller than a calculated theoretical value, on the other hand, the punch is a movable part and moves in a pressure chamber, a fit clearance between the punch and the pressure chamber is enlarged after the punch and the molten metal are worn, the molten metal possibly seeps out from the clearance and is condensed on the side wall of the pressure chamber, so that the movement of the punch is jammed, the pressure transmission is influenced, and the actual cavity pressure is smaller than the calculated theoretical value.
Disclosure of Invention
The embodiment of the application provides a movable die, which aims to solve the problem that a theoretical value of a cavity measured by using the pressure of oil in a hydraulic oil cylinder, the sectional area of a piston of the oil cylinder and the pressure of the piston on an injection rod is larger than the actual pressure of the cavity in the related technology.
There is provided a moving die comprising:
the movable mold comprises a movable mold core and a movable mold frame, wherein a first channel penetrates through the interior of the movable mold core, a second channel is arranged in the movable mold frame, the first channel is communicated with the second channel, ejector rods are movably connected in the first channel and the second channel, and openings at two ends of the first channel are respectively arranged on one side, close to the movable mold frame, of the movable mold core and on one side, far away from the movable mold frame, of the movable mold core;
the pressure sensor is arranged on the movable mould frame and is connected with the ejector rod;
and one end of the ejector rod, which is far away from the pressure sensor, is flush with the opening on one side, which is far away from the movable mould frame, of the first channel.
In some embodiments, the first channel includes a first section and a second section that are communicated with each other, the second section is disposed near the second channel, when the movable mold core is attached to the movable mold frame, the first section is attached to the ejector rod, and a distance between the second section and the ejector rod is greater than 0.5 mm.
In some embodiments, a transition structure is arranged at a joint of the first section and the second section, and a cross section of the transition structure is in a shape of a circular truncated cone.
In some embodiments, the stem lifter is cylindrical and the first and second channels are both cylindrical.
In some embodiments, the first and second channels have substantially the same inner diameter.
In some embodiments, a side of the first channel facing the second channel is provided with a guide structure, and the cross section of the guide structure is in a circular truncated cone shape, wherein the opening diameter of the guide structure on a side close to the second channel is larger than that of the guide structure on a side close to the first channel.
In some embodiments, the pressure sensor further comprises a display terminal, and the display terminal is in signal connection with the pressure sensor.
In some embodiments, a limiting groove is formed in one end, away from the first channel, of the second channel, a protruding block extends outwards from one end, close to the pressure sensor, of the ejector rod, and the protruding block is used for being matched with the limiting groove.
In some embodiments, the surface of the mandrel is coated with a lubricating layer.
In some embodiments, the pressure sensor is detachably arranged on a side wall of the movable mold frame away from the movable mold core.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a movable mould, because first passageway and second passageway have been opened respectively in movable mould core and the movable mould frame, and be equipped with the ejector pin in first passageway and second passageway, therefore, when shaping on the movable mould, the mould die cavity is filled to the metal liquid this moment, contact the ejector pin, the metal liquid produces the die cavity pressure after receiving drift pressure, produce pressure to the ejector pin, the ejector pin transmits real-time pressure to the tail end, apply to pressure sensor, pressure sensor receives the pressure value in real time, obtain accurate die cavity pressure value in real time, the actual pressure that the effective monitoring die cavity metal liquid received and trend of change, help management and control foundry goods quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a sectional view of a movable mold according to an embodiment of the present application;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 2;
fig. 4 is an enlarged schematic view of the structure at C in fig. 2.
In the figure: 1. a movable mold core; 2. moving the mold frame; 3. a first channel; 31. a first stage; 32. a second stage; 4. a second channel; 5. a top rod; 6. a pressure sensor; 7. a transition structure; 8. a guide structure; 9. a limiting groove; 10. and (4) a bump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
At present, high-pressure casting is performed by solidifying and molding molten metal in a pressurized state, the pressure of the molten metal in a cavity is the cavity pressure, the higher the cavity pressure is in a reasonable range, the higher the density of a solidified casting is, and the fewer internal defects are, so that the cavity pressure is one of important parameters in a high-pressure casting process and needs to be monitored in a key mode. The principle of generating the cavity pressure is that hydraulic oil in an injection oil cylinder of a die casting machine pushes a piston, the piston pushes an injection rod, the other end of the injection rod is connected with an injection punch head, the punch head exerts pressure on molten metal, and the pressure is generated inside the molten metal.
In the related art, a pressure P1 of oil in a hydraulic cylinder of a die casting machine is detected, and a cross-sectional area S1 of a piston of the hydraulic cylinder is known, a pressure F1 of the piston against an injection rod is P1 × S1, a pressure F2 of an injection punch against molten metal is F1, and a cross-sectional area of the punch is S2, so that an internal pressure of the molten metal, namely a cavity pressure P2 is F2/S2 is F1/S2 is P1 × S1/S2.
However, the molten metal directly subjected to the pressure of the punch is only molten metal in a runner of the die and then is indirectly transferred to molten metal in the cavity, generally, the width of a pouring channel is narrow, the molten metal of the pouring channel is locally solidified in advance, so that the pressure transmission is attenuated, the pressure of the actual cavity is smaller than a calculated theoretical value, on the other hand, the punch is a movable part and moves in a pressure chamber, a fit clearance between the punch and the pressure chamber is enlarged after the punch and the molten metal are worn, the molten metal possibly seeps out from the clearance and is condensed on the side wall of the pressure chamber, so that the motion of the punch is blocked, the pressure transmission is influenced, and the pressure of the actual cavity is smaller than the calculated theoretical value
The embodiment of the application provides a movable die, which aims to solve the problem that a theoretical value of a cavity measured by using the pressure of oil in a hydraulic oil cylinder, the sectional area of a piston of the oil cylinder and the pressure of the piston on an injection rod is larger than the actual pressure of the cavity in the related technology.
Please refer to fig. 1-4, in order to solve the above problem, the present application provides a movable mold, which includes a movable mold core 1, a movable mold frame 2 and a pressure sensor 6, a first channel 3 penetrates through the interior of the movable mold core 1, a second channel 4 is opened in the movable mold frame 2, the first channel 3 is communicated with the second channel 4, a push rod 5 is movably connected in the first channel 3 and the second channel 4, openings at two ends of the first channel 3 are respectively opened at one side of the movable mold core 1 close to the movable mold frame 2 and one side of the movable mold core 1 far away from the movable mold frame 2, the pressure sensor 6 is arranged on the movable mold frame 2 and connected with the push rod 5, wherein one end of the push rod 5 far away from the pressure sensor 6 is flush with an opening at one side of the first channel 3 far away from the movable mold frame 2.
Die casting is an abbreviation for pressure casting. Under the action of high pressure, liquid or semi-liquid metal is filled into die cavity of die-casting mould at high speed and quickly solidified under pressure to obtain casting. The die casting mold used is called a die casting mold, and in the present application, the main emphasis is placed on the structure inside the movable mold core 1 and the movable mold frame 2.
In the present application, the working principle is as follows:
because the movable mold core 1 and the movable mold frame 2 are respectively provided with the first channel 3 and the second channel 4, and the ejector rods 5 are arranged in the first channel 3 and the second channel 4, when the movable mold is molded, the mold cavity is filled with the molten metal at the moment, the molten metal is contacted with the ejector rods 5, the cavity pressure is generated after the molten metal is subjected to the punch pressure, the ejector rods 5 generate pressure, the ejector rods 5 transmit real-time pressure to the tail end and apply the real-time pressure to the pressure sensor 6, the pressure sensor 6 adopts a sensor sold or disclosed in the existing market, and therefore, detailed description is not given here, the pressure sensor 6 receives the pressure value in real time, the accurate cavity pressure value is obtained in real time, the actual pressure and the variation trend of the molten metal in the mold cavity are effectively monitored, and the quality control of castings is facilitated.
The solidification time of the molten metal in the cavity is extremely short, taking an engine cylinder block as an example, the molten metal is solidified for 60% in 5-6 seconds, the surface of the workpiece is basically solidified, and only the molten metal in the workpiece is remained, so that the time for detecting the pressure intensity window of the cavity is only 5-6 seconds.
In the related art, the first prior art for detecting the pressure of a die-casting die cavity is as follows: the pressure P1 of oil in a hydraulic oil cylinder of a die casting machine is detected, the cross section area S1 of a piston of the hydraulic oil cylinder is known, the pressure F1 of the piston to an injection rod is P1 multiplied by S1, the pressure F2 of an injection punch to molten metal is F1, and the cross section area of the punch is S2, so that the internal pressure of the molten metal, namely the cavity pressure P2 multiplied by F2/S2 multiplied by F1/S2 multiplied by P1 multiplied by S1/S2.
The molten metal directly stressed by the punch is only molten metal in a mold runner and then is indirectly transferred to the molten metal in the cavity, the width of a general runner is narrow, the molten metal of the runner is locally solidified in advance, so that the pressure intensity transfer is attenuated, and the actual cavity pressure intensity is smaller than the calculated theoretical value.
On the other hand, the punch is a movable part and moves in the pressure chamber, the fit clearance is enlarged after the punch and the pressure chamber are worn, molten metal possibly seeps out of the clearance and is condensed on the side wall of the pressure chamber, so that the punch is jammed in movement and pressure transmission is influenced, and the actual pressure of the cavity is smaller than the calculated theoretical value.
Through in this application, be equipped with ejector pin 5 in movable mould core 1 and the movable mould frame 2, receive the pressure of metal liquid transmission by ejector pin 5, ejector pin 5 transmits real-time pressure to the tail end, exerts on pressure sensor 6, and pressure sensor 6 receives the pressure value in real time to quick and accurate survey actual pressure and the change trend that the die cavity metal liquid received.
It is to be understood that in the movable mold core 1 and the movable mold frame 2 in the present application, there is also an ejection mechanism for ejecting the mold.
Specifically, referring to fig. 1 to 3, the first channel 3 includes a first section 31 and a second section 32 that are communicated with each other, the second section 32 is disposed near the second channel 4, when the movable mold core 1 is attached to the movable mold frame 2, the first section 31 is attached to the ejector rod 5, and a distance between the second section 32 and the ejector rod 5 is greater than 0.5 mm.
Wherein, first section 31 and second section 32 structure as an organic whole, the ratio of second section 32 and first section 31 length can 3 ~ 5: 1, in particular 3:1, 4:1 or 5: 1, the specific condition is not limited, and the setting can be according to the actual situation.
In this embodiment, first section 31 with ejector pin 5 laminating setting, that is to say, the clearance between first section 31 and ejector pin 5 is infinitely close to zero, can avoid in the molten metal casting forming process, flows out from the gap between first section 31 and ejector pin 5 to lead to the pressure value of surveying inaccurate, therefore this setting can guarantee that the pressure value of surveying is minimum with actual die cavity pressure deviation.
On the other hand, the distance between the second section 32 and the ejector pin 5 is greater than 0.5mm, but it can also be understood that the distance between the second section 32 and the ejector pin 5 is not less than 0.5mm, so that the friction between the ejector pin 5 and the side wall forming the second section 32 is not high, and the friction force of movement in the ejector pin hole is reduced.
Referring to fig. 3, on the other hand, a transition structure 7 is arranged at the junction of the first section 31 and the second section 32, and the section of the transition structure 7 is in a truncated cone shape.
At the in-process of installation ejector pin 5, pass second passageway 4 of movable mould frame 2 earlier, then pass first passageway 3 of movable mould core 1 again, consequently transition structure 7 mainly plays when installation ejector pin 5, because first passageway 3 includes first section 31 and the second section 32 that communicates each other, second section 32 is close to second passageway 4 sets up, works as movable mould core 1 with when the laminating of movable mould frame 2, first section 31 with the laminating of ejector pin 5 sets up, is convenient for install ejector pin 2 from second passageway 4 to first passageway 3 in, and at this in-process, can not closely laminate because first section 31 needs and ejector pin 5 for ejector pin 5 is difficult for penetrating in second section 32, also is convenient and fast installs ejector pin 5 fast in movable mould frame 2 and movable mould core 1.
Further, the ejector rod 5 is cylindrical, and the first channel 3 and the second channel 4 are both cylindrical.
In the actual production process, the mandrel 5 is substantially cylindrical, and the first channel 3 and the second channel 4 are both substantially cylindrical, i.e. infinitely close to a circle, due to unavoidable practical tolerances.
At this time, the pressure value received by the jack 5 can be obtained: the sectional area of the ejector rod is S, the pressure of the cavity to be measured is P, the ejector rod is subjected to pressure F which is S multiplied by P, the ejector rod 4 transmits real-time pressure to the tail end and is applied to the pressure sensor 7, and the pressure sensor 7 receives the pressure value in real time.
In some embodiments, referring to fig. 2-3, the inner diameters of the first and second passages 3, 4 are substantially the same.
In the actual production and manufacturing process, the inner diameters of the first channel 3 and the second channel 4 cannot be completely the same due to inevitable actual errors, so that the inner diameters of the first channel 3 and the second channel 4 are approximately the same, and the difference between the inner diameters is infinitely close to zero, and the design can facilitate the calibration of the movable mold core 1 and the movable mold core 2.
It is understood that the inner diameter of the first channel 3 may be slightly larger than the inner diameter of the second channel 4, and also may be slightly smaller than the inner diameter of the second channel 4, and may be adjusted according to practical situations, which will not be explained in detail herein.
Referring to fig. 3, a guide structure 8 is arranged on a side of the first channel 3 facing the second channel 4, and the cross section of the guide structure 8 is in a circular truncated cone shape, wherein the opening diameter of the guide structure 8 on a side close to the second channel 4 is larger than that of the guide structure on a side close to the first channel 3.
Under the condition that the inner diameters of the first channel 3 and the second channel 4 are approximately the same, when the ejector rod 5 is installed in the first channel 3 and the second channel 4, particularly when the ejector rod 5 penetrates through the second channel 4 and enters the first channel 3, the guide structure 8 facilitates the ejector rod 5 to be introduced into the first channel 3 from the second channel 4, and simultaneously solves the problem that the ejector rod 5 is inconvenient to be introduced into the first channel 3 from the second channel 4 when the movable mold core 1 and the movable mold frame 2 are installed to have tolerance.
Furthermore, the device also comprises a display terminal (not shown in the figure), the display terminal is in signal connection with the pressure sensor 6, the display terminal can be arranged on a movable die or a control chamber, the display terminal is arranged according to the actual situation, a screen is arranged on the display terminal, when the molten metal is subjected to the pressure of the punch, the pressure is generated on the ejector rod 5, the ejector rod 5 transmits the real-time pressure to the tail end and is applied to the pressure sensor 6, the pressure sensor 6 receives the pressure value in real time, the accurate pressure value of the cavity is obtained in real time, the pressure sensor 6 detects the pressure and converts the pressure into a voltage signal, the voltage signal is transmitted to a data acquisition card through a signal wire, the signal is processed and displayed on the display terminal, the real-time pressure F of the ejector rod can be displayed, the real-time pressure of the cavity to be measured is P/F, and the actual pressure and the variation trend of the molten metal in the cavity are effectively monitored, and the casting quality can be managed and controlled.
Referring to fig. 4, a limiting groove 9 is formed in one end, away from the first channel 3, of the second channel 4, a protruding block 10 extends outwards from one end, close to the pressure sensor 6, of the ejector rod 5 along the outer side wall, the protruding block 10 is used for being matched with the limiting groove 9, and when the protruding block 10 abuts against the limiting groove 9, the limiting groove 9 limits the ejector rod 5 to move towards the first channel 3.
In this embodiment, spacing groove 9 mainly plays certain limiting displacement, works as during lug 10 and spacing groove 9 butt, ejector pin 5 was kept away from this moment the one end of lug 10 with the opening of one side that movable mould frame 2 was kept away from to first passageway 3 flushes, consequently is carrying out installation many times and dismantles the in-process, all can guarantee in the installation at every turn, all can make ejector pin 5 keep away from the one end of lug 10 with the opening of one side that movable mould frame 2 was kept away from to first passageway 3 flushes, stops in the molten metal forming process, because ejector pin 5 stretches out or can not reach under the opening condition that one side that movable mould frame 2 was kept away from to first passageway 3, leads to mould product defect.
In the present application, the shape of the bump 10 is not limited, and may be a ring shape or an irregular shape as long as the bump 10 has a flat surface that can abut against the stopper groove 9.
It should be understood that, in order to reduce the friction generated by the movement of the push rod 5 in the first channel 3 and the second channel 4, the surface of the push rod 5 is coated with a lubricating layer, which may be any material having a lubricating function in the prior art, or the push rod 5 may be coated with a lubricating oil to reduce the friction, which may be set according to practical situations, and in this embodiment, the surface of the push rod 5 is preferably coated with the lubricating oil.
Referring to fig. 4, in order to facilitate installation and disassembly, the pressure sensor 6 is detachably disposed on a side wall of the movable mold frame 2 away from the movable mold core 1.
Specifically, the pressure sensor 6 can be detachably arranged on the side wall of the movable mold frame 2 away from the movable mold core 1 by means of bolts or buckles.
The working principle of the application is as follows:
a first channel 3 and a second channel 4 are respectively arranged in a movable mold core 1 and a movable mold frame 2, and ejector rods 5 are arranged in the first channel 3 and the second channel 4, so that when the movable mold is molded, metal liquid fills a mold cavity at the moment, contacts the ejector rods 5, cavity pressure is generated after the metal liquid is subjected to punch pressure, pressure is generated on the ejector rods 5, the ejector rods 5 transmit real-time pressure to the tail end and apply the real-time pressure to a pressure sensor 6, the pressure sensor 6 receives the pressure value in real time, an accurate cavity pressure value is obtained in real time, the actual pressure and the change trend of the cavity metal liquid are effectively monitored, and the casting quality is controlled.
At the in-process of installation ejector pin 5, pass second passageway 4 of movable mould frame 2 earlier, then pass first passageway 3 of movable mould core 1 again, consequently transition structure 7 mainly plays when installation ejector pin 5, because first passageway 3 includes first section 31 and the second section 32 that communicates each other, second section 32 is close to second passageway 4 sets up, works as movable mould core 1 with when the laminating of movable mould frame 2, first section 31 with the laminating of ejector pin 5 sets up, is convenient for install ejector pin 2 from second passageway 4 to first passageway 3 in, and at this in-process, can not closely laminate because first section 31 needs and ejector pin 5 for ejector pin 5 is difficult for penetrating in second section 32, also is convenient and fast installs ejector pin 5 fast in movable mould frame 2 and movable mould core 1.
Under the condition that the inner diameters of the first channel 3 and the second channel 4 are approximately the same, when the ejector rod 5 is installed in the first channel 3 and the second channel 4, particularly when the ejector rod 5 penetrates through the second channel 4 and enters the first channel 3, the guide structure 8 facilitates the ejector rod 5 to be introduced into the first channel 3 from the second channel 4, and simultaneously solves the problem that the ejector rod 5 is inconvenient to be introduced into the first channel 3 from the second channel 4 when the movable mold core 1 and the movable mold frame 2 are installed to have tolerance.
When the molten metal is subjected to the pressure of the punch, cavity pressure is generated, pressure is generated on the ejector rod 5, the ejector rod 5 transmits real-time pressure to the tail end and is applied to the pressure sensor 6, the pressure sensor 6 receives the pressure value in real time, an accurate cavity pressure value is obtained in real time, the pressure sensor 6 detects the pressure, the pressure is converted into a voltage signal and is transmitted to the data acquisition card through a signal line, the signal is processed and then displayed on the display terminal, the real-time pressure F of the ejector rod can be displayed, the real-time cavity pressure to be detected is P ═ F/S, the actual pressure and the variation trend of the cavity molten metal are effectively monitored, and the quality of castings is controlled.
Spacing groove 9 mainly plays certain limiting displacement, works as during lug 10 and spacing groove 9 butt, ejector pin 5 was kept away from this moment the one end of lug 10 with the opening of one side that movable mould frame 2 was kept away from to first passageway 3 flushes, consequently carries out installation many times and dismantles the in-process, all can guarantee at every installation, all can make ejector pin 5 keep away from the one end of lug 10 with the opening of one side that movable mould frame 2 was kept away from to first passageway 3 flushes, stops in the molten metal forming process, because ejector pin 5 stretches out or can not reach under the opening condition of one side that movable mould frame 2 was kept away from to first passageway 3, leads to mould product defect.
In order to reduce the friction of the movement of the push rod 5 in the first channel 3 and the second channel 4, the surface of the push rod 5 is coated with a lubricating layer, the lubricating layer may be made of any material with a lubricating function in the prior art, or the push rod 5 may be coated with lubricating oil to reduce the friction, which may be set according to actual conditions, and in this embodiment, the surface of the push rod 5 is preferably coated with lubricating oil.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A moving die, characterized in that it comprises:
the mold comprises a movable mold core (1) and a movable mold frame (2), wherein a first channel (3) penetrates through the interior of the movable mold core (1), a second channel (4) is formed in the movable mold frame (2), the first channel (3) is communicated with the second channel (4), ejector rods (5) are movably connected in the first channel (3) and the second channel (4), and openings at two ends of the first channel (3) are respectively arranged on one side, close to the movable mold frame (2), of the movable mold core (1) and on one side, far away from the movable mold frame (2), of the movable mold core (1);
the pressure sensor (6) is arranged on the movable mould frame (2) and connected with the ejector rod (5);
wherein, the end of the ejector rod (5) far away from the pressure sensor (6) is flush with the opening of the first channel (3) far away from one side of the movable mould frame (2).
2. The moving mold according to claim 1, wherein: first passageway (3) are including first section (31) and second section (32) of intercommunication each other, second section (32) are close to second passageway (4) set up, work as movable mould core (1) with when movable mould frame (2) laminating, first section (31) with ejector pin (5) laminating sets up, second section (32) with the interval between ejector pin (5) is greater than 0.5 mm.
3. The moving mold according to claim 2, wherein: the joint of the first section (31) and the second section (32) is provided with a transition structure (7), and the section of the transition structure (7) is in a circular truncated cone shape.
4. The moving mold according to claim 1, wherein: the ejector rod (5) is cylindrical, and the first channel (3) and the second channel (4) are both cylindrical.
5. The moving mold according to claim 4, wherein: the inner diameters of the first channel (3) and the second channel (4) are approximately the same.
6. The moving mold according to claim 5, wherein: the first channel (3) is provided with a guide structure (8) towards one side of the second channel (4), the cross section of the guide structure (8) is in a circular truncated cone shape, and the opening diameter of one side, close to the second channel (4), of the guide structure (8) is larger than that of one side, close to the first channel (3).
7. The moving mold according to claim 1, wherein: the pressure sensor is characterized by further comprising a display terminal, wherein the display terminal is in signal connection with the pressure sensor (6).
8. The moving mold according to claim 1, wherein: keep away from second passageway (4) the one end of first passageway (3) is equipped with spacing groove (9), ejector pin (5) are close to the one end of pressure sensor (6) has lug (10) along the lateral wall outwards extending, lug (10) are used for cooperating with spacing groove (9), work as during lug (10) and spacing groove (9) butt, spacing groove (9) restriction ejector pin (5) are to first passageway (3) direction removal.
9. The moving mold according to claim 1, wherein: the surface of the ejector rod (5) is coated with a lubricating layer.
10. The moving mold according to claim 1, wherein: the pressure sensor (6) is detachably arranged on the side wall of one side, away from the movable mold core (1), of the movable mold frame (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111207085.7A CN114012062A (en) | 2021-10-15 | 2021-10-15 | Moving die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111207085.7A CN114012062A (en) | 2021-10-15 | 2021-10-15 | Moving die |
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| Publication Number | Publication Date |
|---|---|
| CN114012062A true CN114012062A (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111207085.7A Pending CN114012062A (en) | 2021-10-15 | 2021-10-15 | Moving die |
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| CN (1) | CN114012062A (en) |
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| JPS60221164A (en) * | 1984-04-18 | 1985-11-05 | Mazda Motor Corp | Pressure casting device |
| CN1176875A (en) * | 1996-09-04 | 1998-03-25 | 双叶电子工业株式会社 | Pressure sensor-equipped ejector pin |
| DE19910124A1 (en) * | 1997-09-10 | 2000-09-14 | Futaba Denshi Kogyo Kk | Ejector pin with pressure sensor for injection molding machine |
| CN203496219U (en) * | 2013-08-09 | 2014-03-26 | 科络普线束技术(太仓)有限公司 | Novel injection mould with pressure induction device |
| CN204123619U (en) * | 2014-09-25 | 2015-01-28 | 重庆隆嘉模具有限公司 | Mold ejection mechanism |
| CN204194757U (en) * | 2014-09-30 | 2015-03-11 | 宁波辉旺机械有限公司 | A kind of gradient jogger hole preventing from push rod and core rod from killing fractureing |
| CN206106268U (en) * | 2016-10-31 | 2017-04-19 | 南京建勋塑胶模具有限公司 | Survey mould cavity pressure device and injection mold |
| CN107803976A (en) * | 2017-11-27 | 2018-03-16 | 优力精密塑胶（苏州）有限公司 | A kind of pressure tester and injection mold in mold cavity |
| CN110049855A (en) * | 2016-12-08 | 2019-07-23 | 美蓓亚三美株式会社 | Relay and pressure-detecting device |
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2021
- 2021-10-15 CN CN202111207085.7A patent/CN114012062A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807914A (en) * | 1972-12-04 | 1974-04-30 | Control Process Inc | Cavity pressure control system |
| JPS60221164A (en) * | 1984-04-18 | 1985-11-05 | Mazda Motor Corp | Pressure casting device |
| CN1176875A (en) * | 1996-09-04 | 1998-03-25 | 双叶电子工业株式会社 | Pressure sensor-equipped ejector pin |
| DE19910124A1 (en) * | 1997-09-10 | 2000-09-14 | Futaba Denshi Kogyo Kk | Ejector pin with pressure sensor for injection molding machine |
| CN203496219U (en) * | 2013-08-09 | 2014-03-26 | 科络普线束技术(太仓)有限公司 | Novel injection mould with pressure induction device |
| CN204123619U (en) * | 2014-09-25 | 2015-01-28 | 重庆隆嘉模具有限公司 | Mold ejection mechanism |
| CN204194757U (en) * | 2014-09-30 | 2015-03-11 | 宁波辉旺机械有限公司 | A kind of gradient jogger hole preventing from push rod and core rod from killing fractureing |
| CN206106268U (en) * | 2016-10-31 | 2017-04-19 | 南京建勋塑胶模具有限公司 | Survey mould cavity pressure device and injection mold |
| CN110049855A (en) * | 2016-12-08 | 2019-07-23 | 美蓓亚三美株式会社 | Relay and pressure-detecting device |
| CN107803976A (en) * | 2017-11-27 | 2018-03-16 | 优力精密塑胶（苏州）有限公司 | A kind of pressure tester and injection mold in mold cavity |
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Application publication date: 20220208 |
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