CN219805366U - Extrusion casting forming machine - Google Patents
Extrusion casting forming machine Download PDFInfo
- Publication number
- CN219805366U CN219805366U CN202321012292.1U CN202321012292U CN219805366U CN 219805366 U CN219805366 U CN 219805366U CN 202321012292 U CN202321012292 U CN 202321012292U CN 219805366 U CN219805366 U CN 219805366U
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- sealing
- die cavity
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- 238000005266 casting Methods 0.000 title claims abstract description 15
- 238000001125 extrusion Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 98
- 238000009716 squeeze casting Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 20
- 239000002184 metal Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides an extrusion casting molding machine, which aims at the defect that in the prior art, a vacuum device is required to be arranged in a mold cavity to fill a molten liquid into the mold cavity, and negative pressure is generated in the mold cavity when the mold cavity is filled, so that the structure of equipment is complex.
Description
Technical Field
The utility model relates to the technical field of extrusion casting molding of liquid alloy.
Background
The extrusion casting molding machine is generally classified into high-pressure casting, low-pressure casting and differential pressure casting, and is characterized in that liquid metal or metal alloy is filled into a cavity and is subjected to feeding extrusion casting molding through a compression feeding pin. The extruder generally comprises a movable die and a static die, wherein the movable die and the static die are respectively provided with a cavity, or the cavities are only arranged on the movable die or the static die, and form a complete cavity during die assembly, and the extruder also comprises a pressurizing chamber, a pressurizing device, a vacuumizing device and a controller, wherein the pressurizing chamber is communicated with a cavity gate through a feed channel, an exhaust channel is arranged on the upper die and/or the lower die, the exhaust channel is connected with the vacuumizing device, the cavity of the die is vacuumized by utilizing the vacuum device during die filling, the pressurizing device is utilized to pressurize liquid in the pressurizing chamber and vacuumize the pressure difference to fill molten metal into the cavity from the pressurizing chamber, and then the extrusion molding is completed through the pressurization of a central pressurizing and feeding pin and a pressure supplementing pin. By adopting the structure and the process for extrusion casting, the molten metal side is positive pressure and the cavity side is negative pressure during mold filling, the molten metal is easy to splash due to pressure difference during mold filling, cracks and cold scars are generated on the molded product, the quality of the molded product is reduced, a vacuum device is needed to be arranged on the cavity side for making the cavity side be negative pressure to vacuumize the cavity, the vacuumizing time is controlled, the process is complex, and the vacuumizing device is needed to be arranged to complicate the equipment structure.
Disclosure of Invention
The utility model aims to overcome the defect that in the prior art, a vacuum device is required to be arranged for filling molten liquid into a cavity, and negative pressure is generated in the cavity due to the fact that the cavity is pumped during filling, so that the structure of equipment is complex, and provides an extrusion casting forming machine.
The technical aim of the utility model is realized by the following technical scheme:
the extrusion casting forming machine comprises an upper die, a lower die, a die clamping device and a feeding device, wherein the die clamping device drives the upper die and/or the lower die to move to complete die clamping, a cavity is formed after the upper die and the lower die are clamped, an exhaust passage is formed in the upper die and/or the lower die, one end of the exhaust passage is communicated with the atmosphere, the other end of the exhaust passage is communicated with the cavity, an exhaust passage sealing device is further arranged, the exhaust passage sealing device comprises a sealing pin, a sealing pin driving device and a sealing pin passage, one end of the sealing pin passage is communicated with the atmosphere, the other end of the sealing pin passage is communicated with the cavity, an air inlet of the exhaust passage is communicated with the sealing pin passage so as to realize the communication with the cavity, one end of the sealing pin is positioned in the sealing pin passage, the other end of the sealing pin is fixedly connected with the output end of the sealing pin driving device in a sliding fit manner, and the sealing pin is driven by the sealing pin driving device to move in the sealing pin passage so as to seal or open the air inlet;
the upper die or the lower die is provided with a temperature measuring device which is positioned at the position of the third quarter of the height of the die cavity, the device also comprises a controller, the temperature measuring device is in electric signal connection with the input end of the controller, the blocking pin driving device is in electric signal connection with the output end of the controller, and when the temperature of the temperature measuring device reaches a set value, the controller controls the blocking pin driving device to drive the blocking pin to move to block the air inlet;
the plugging pin is fixedly connected with the output end of the plugging pin driving device through a first connecting rod, the plugging pin comprises a large-diameter section and a small-diameter section, the large-diameter section is fixedly connected with the first connecting rod, the small-diameter section forms a plugging pin notch, when the air charging and discharging are carried out, the small-diameter section is opposite to the air inlet, and when the air inlet is sealed, the large-diameter end and the air outlet are opposite to each other to seal the air inlet;
the lower part of the plugging pin channel is in a horn mouth shape with a narrow upper part and a wide lower part, and/or the lower end of the plugging pin is in a frustum shape;
the plugging pin is also used as a pressurizing feeding pin or a demolding pin;
the die cavity opening is positioned below a die cavity, a die cavity opening sealing pin channel is arranged opposite to the die cavity opening, one end of the die cavity opening sealing pin is positioned in the die cavity opening sealing pin channel, the other end of the die cavity opening sealing pin is fixedly connected with the output end of the die cavity opening sealing pin driving device, the die cavity opening sealing pin is in sliding fit and sealing connection with the die cavity opening sealing pin channel, and the die cavity opening sealing pin is free to enter and exit and is in sealing fit relative to the die cavity opening;
the cavity mouth sealing pin comprises a cavity mouth sealing pin body, wherein a cavity mouth sealing pin channel comprises an upper section and a lower section, the diameter of the upper section is larger than that of the lower section, and the lower section is in sliding fit sealing connection with the central pressurizing feeding pin;
a riser is arranged below the cavity, the cavity opening is positioned below the riser, and the cavity opening sealing pin body freely enters and exits and is in sealing fit with the cavity opening;
the exhaust channel comprises a vertical channel and a transverse channel, the vertical channel is communicated with the atmosphere, and the transverse channel is communicated with the plugging pin channel.
The utility model has the following beneficial effects:
the extrusion casting molding machine adopting the structure of the utility model does not need to be provided with a vacuum device because the exhaust channel is communicated with the atmosphere and is not communicated with the vacuum device, gas is extruded into the cavity under the pressure effect of the solution during the filling process, the exhaust is completed, negative pressure is not caused at the cavity side, the splashing can be reduced, and the exhaust channel sealing device is arranged, when the exhaust channel is required to be sealed, the air inlet of the exhaust channel is sealed by the exhaust channel sealing device, so the whole device has simple structure.
Furthermore, a temperature measuring device is arranged to monitor the temperature of the cavity, and the cavity is considered to be full when the temperature of the temperature measuring device rises to a set value, so that the air inlet is sealed by the air outlet channel sealing device to realize automatic sealing of the air outlet channel to complete the filling, and the whole device is simple in structure and easy to control.
Description of the reference numerals
A mold assembly; 101. An upper die; 102. a lower die; 103. a cavity; 104. a cavity opening; 105. a cavity opening sealing pin driving device; 106, sealing the pin channel at the cavity opening; 107. A cavity opening sealing pin; a pressurized feed pin 108; 109. a cavity seal pin body; 111. An exhaust passage; 112. an exhaust passage closing device; 114. Plugging pins; 115, a blocking pin driving device; 116. A first connecting rod; 117. Riser; 118. plugging the pin notch; 119. Plugging the taper head of the pin; 120. Plugging the pin bell mouth; 121. A second connecting rod; 122. a central pressurized feed pin; 123. plugging pin channel
200. A mold clamping device;
300. a feeding device; 301. A holding furnace; 302. Preserving the solution in the furnace; 303. A feed channel; 304. a pressurized cavity; 305. A guide cylinder;
400. a temperature measuring device;
drawings
FIG. 1 is a schematic view of an embodiment of an squeeze casting machine of the present utility model;
fig. 2 is an enlarged view of a portion of the mating portion of the closure pin and cavity of fig. 1.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples. Wherein like parts are designated by like reference numerals. This specific example is merely illustrative of the utility model and is not intended to be limiting.
As shown in fig. 1, the extrusion casting molding machine with the structure of the embodiment of the utility model comprises a mold assembly 100, a mold clamping device 200 and a feeding device 300, wherein the mold assembly 100 comprises an upper mold 101 and a lower mold 102, the mold clamping device is fixedly connected with the upper mold or the lower mold, the upper mold or the lower mold is driven by the mold clamping device to move to complete mold clamping and mold opening, a cavity 103 for containing molten liquid is formed after the upper mold and the lower mold are clamped, and the solution is molded in the cavity. The cavity port 104 is located below the lower die 102, which is supported by a support plate, on which a feed channel 303 is provided, and under which a feed device is provided, the feed device comprising a holding furnace 301 and a pressurizing device (not shown in the figure) for pressurizing a solution 302 in the holding furnace, the holding furnace 301 having a pressurizing cavity 304 in which the solution 302 is located, an opening being provided above the pressurizing cavity, a guide cylinder 305 being provided in the opening, the upper end of the guide cylinder being in sealing communication with the cavity port through the feed channel, and the lower end being located below the liquid level of the solution 302. The whole pressurized cavity of the holding furnace is a sealed cavity. The heat preservation furnace is provided with a channel connected with the gas channel for being connected with the pressurizing equipment, so that pressurized gas can conveniently enter and exit.
A cavity opening sealing pin channel 106 is arranged at a position opposite to the cavity opening 104 on the upper die, a cavity opening sealing pin 107 is positioned in the cavity opening sealing pin channel and is in sliding sealing fit connection with the cavity opening sealing pin channel, and the cavity opening sealing pin 107 can freely enter and exit the cavity opening sealing pin channel relative to the cavity opening so as to seal or open the cavity opening. The cavity port seal pin 107 is fixedly connected to the output end of the cavity port seal pin driving device 105. The air exhaust device is further arranged and comprises an air exhaust channel 111 and an air exhaust channel closing device 112, the air exhaust channel 111 is arranged on the upper die and is located above the die cavity, one end opening of the air exhaust channel is communicated with the outside atmosphere, the other end opening of the air exhaust channel is an air inlet and is communicated with the inner cavity of the die cavity 103, and when the air exhaust channel 111 needs to be closed, the air inlet of the air exhaust channel is closed by the air exhaust channel closing device 112. The structure of the exhaust device 111 is various, for example, in one embodiment, the exhaust channel 111 comprises two sections of a vertical channel and a transverse channel, the exhaust channel sealing device 112 is composed of a sealing pin 114, a sealing pin channel 123 and a sealing pin driving device 115, one end of the sealing pin 114 is positioned in the sealing pin channel and is in sliding fit and sealing connection with the sealing pin channel, the other end of the sealing pin 114 is connected with the sealing pin driving device 113, the transverse channel is communicated with a cavity, an air inlet of the exhaust channel is arranged at the lower part of the sealing pin channel, a lower opening of the sealing pin channel is communicated with the cavity, so that the exhaust channel is communicated with the cavity, the sealing pin driving device drives the sealing pin to freely move in the exhaust channel, and when the exhaust channel needs to be sealed, the sealing pin driving device drives the sealing pin to move downwards to seal the air inlet of the exhaust channel; in the second embodiment, the pressurization feeding pin 108 can also be used as a plugging pin, the exhaust channel still comprises a vertical channel and a transverse channel, the opening of the transverse channel is used as an air inlet of the exhaust channel and is communicated with the pressurization feeding pin channel in an intersecting manner, the vertical channel and the transverse channel are communicated in a sealing manner, and the side wall of the pressurization feeding pin seals the opening of the transverse channel, namely the air inlet of the exhaust channel. The third embodiment adopts the structure that the demolding pin is also used as a plugging pin, the demolding pin channel is also used as a plugging pin channel, the demolding pin driving device is also used as a plugging pin driving device, when the air discharging channel needs to be sealed, the demolding pin moves downwards for a certain distance to close the air inlet of the air discharging channel, and when the filling demolding is completed, the demolding is moved downwards again.
In a preferred structure, the lower end of the plugging pin channel is in a horn mouth shape with a narrow upper part and a wide lower part, and the air inlet of the air exhaust channel is positioned above the horn mouth, so that the solution overflowed from the cavity can be contained to prevent the air exhaust channel from being blocked.
The temperature measuring device accommodating cavity is preferably arranged at the position of the lower die or the upper die, which is positioned at the position of half to three-fourths of the height of the die cavity, preferably at the position of two-thirds of the height, the temperature measuring device 400 is arranged in the temperature measuring device accommodating cavity, and the temperature measuring device generally adopts a temperature sensor which can be horizontally, vertically or obliquely arranged, preferably horizontally arranged, so that the temperature sensor is more sensitive to temperature change. The cavity of the temperature sensor is not communicated with the cavity, and the head of the temperature sensor is close to the cavity. A controller (not shown in the figure) is arranged, the temperature sensor is electrically connected with the input end of the controller, and the plugging pin driving device is electrically connected with the output end of the controller. When the temperature detected by the temperature sensor reaches the set temperature, the setting and filling are completed, and the blocking pin seals the air inlet of the exhaust channel. The cavity opening sealing pin driving device and the pressurizing feeding pin driving device are all connected with the output end of the controller through electric signals.
When the device works, the pressurizing device presses the solution into the cavity to be filled through the guide cylinder 305 and the feed channel 303, the sealing pin is in a retracted state, the air inlet of the air exhaust channel is opened, the air is exhausted from the air exhaust channel while filling, when the temperature detected by the temperature sensor reaches the set temperature, the cavity is filled, the filling is completed, a signal is sent to the controller, the controller sends the signal to the sealing pin driving device, the cavity opening sealing pin driving device and the pressurizing feeding pin driving device, the sealing pin driving device acts to seal the air inlet of the air exhaust channel, the cavity opening sealing pin driving device acts to drive the cavity opening sealing pin to move downwards to complete the pressurizing feeding of the central pin, and meanwhile the pressurizing feeding pin driving device drives the pressurizing feeding pin to move downwards to complete the local pressurizing feeding of the cavity. Preferably, a riser 117 is provided below the cavity, with the cavity opening being below the riser.
In a more preferred structure, the cavity opening sealing pin is fixedly connected with the output end of the cavity opening sealing pin driving device through a first connecting rod 107. The cavity opening sealing pin channel comprises an upper section and a lower section, the diameter of the upper section is larger than that of the lower section, and the upper section is in sliding fit and sealing connection with the cavity opening sealing pin through the lower section, so that the sliding fit area can be reduced, and the cavity opening sealing pin can be flexible. A preferred embodiment is that the cavity port seal pin is arranged in segments, including a large diameter section and a small diameter section, the small diameter section being positioned below as the pin body of the cavity seal pin for closing the cavity port, and the large diameter section being positioned above as the center pressurization feed pin 122. The diameter of the lower section of the cavity mouth sealing pin channel is larger than that of the cavity mouth sealing pin body and is equal to that of the central pressurizing feeding pin, the lower section is connected with the central pressurizing feeding pin in a sliding sealing fit manner, the cavity mouth sealing pin body seals the cavity mouth, and all or part of the pin body of the cavity sealing pin is positioned in the riser 117. By adopting the structure, the cavity opening sealing pin also plays a role of a diversion cone, and the cavity opening is closed and fed at the same time, so that the structure is simple and the control is simple.
In a more preferred embodiment structure, the blocking pin is fixedly connected with the output end of the blocking pin driving device through a second connecting rod 121, the lower end of the blocking pin is provided with a pointed frustum to form a blocking pin conical head 119, the diameter of the part, adjacent to the blocking pin conical head 119, of the lower part of the blocking pin is smaller than that of the upper part of the blocking pin to form a blocking pin notch 118, the lower part of the blocking pin channel 123 is provided with a horn mouth shape to form a blocking pin horn mouth 120, the small-diameter part of the blocking pin channel is opposite to the air inlet of the air exhaust channel during filling, the blocking pin conical head is positioned at the horn mouth, the air inlet is opened to enable the existing cavity of the air exhaust channel to be communicated, and when filling is completed, the blocking pin driving device drives the blocking pin to move downwards, the large-diameter part of the blocking pin is opposite to the air inlet to seal the air inlet of the air exhaust channel. When the plugging pin with the structure is adopted, gas enters the exhaust channel from a gap between the small diameter of the plugging pin and the plugging pin channel, the large diameter end of the plugging pin moves downwards to close the air inlet relative to the exhaust channel when the air inlet is closed, meanwhile, due to the plugging pin flare 120, solution entering the cavity overflows, the solution is contained by the plugging pin flare and cannot enter the exhaust channel, the exhaust channel is prevented from being plugged, when the plugging pin is adopted and used as the plugging pin, the height of the plugging pin and the height of the plugging pin notch are moderate, the plugging pin is separated from the cavity after the air inlet of the exhaust channel is closed, and the plugging pin taper 119 arranged at the lower end is required to act on a molded product well, so that the demolding is facilitated.
Claims (9)
1. The extrusion casting forming machine comprises an upper die, a lower die, a die clamping device and a feeding device, wherein the die clamping device drives the upper die and/or the lower die to move to complete die clamping, a cavity is formed after the upper die and the lower die are clamped, and an exhaust passage is arranged on the upper die and/or the lower die.
2. The squeeze casting machine of claim 1, wherein: the upper die or the lower die is provided with a temperature measuring device, the temperature measuring device is positioned at the position of the same three-quarters of the height of the die cavity, the device also comprises a controller, the temperature measuring device is electrically connected with the input end of the controller, the plugging pin driving device is electrically connected with the output end of the controller, and when the temperature of the temperature measuring device reaches a set value, the controller controls the plugging pin driving device to drive the plugging pin to move to seal the air inlet.
3. The squeeze casting machine according to claim 1 or 2, wherein: the plugging pin is fixedly connected with the output end of the plugging pin driving device through a first connecting rod, the plugging pin comprises a large-diameter section and a small-diameter section, the large-diameter section is fixedly connected with the first connecting rod, the small-diameter section forms a plugging pin notch, when the air charging and discharging are carried out, the small-diameter section is opposite to the air inlet, and when the air inlet is sealed, the large-diameter end and the air outlet are opposite to each other to seal the air inlet.
4. The squeeze casting machine of claim 3, wherein: the lower part of the plugging pin channel is in a horn mouth shape with a narrow upper part and a wide lower part, and/or the lower end of the plugging pin is in a frustum shape.
5. The squeeze casting machine of claim 1, wherein: the plugging pin is also used as a pressurizing feeding pin or a demolding pin.
6. The squeeze casting machine of claim 1, wherein: the die cavity opening is positioned below a die cavity, a die cavity opening sealing pin channel is arranged opposite to the die cavity opening, one end of the die cavity opening sealing pin is positioned in the die cavity opening sealing pin channel, the other end of the die cavity opening sealing pin is fixedly connected with the output end of the die cavity opening sealing pin driving device, the die cavity opening sealing pin is in sliding fit and sealing connection with the die cavity opening sealing pin channel, and the die cavity opening sealing pin is free to enter and exit and is in sealing fit relative to the die cavity opening.
7. The squeeze casting machine of claim 6, wherein: the cavity mouth sealing pin comprises a cavity mouth sealing pin body, wherein a cavity mouth sealing pin channel comprises an upper section and a lower section, the diameter of the upper section is larger than that of the lower section, and the lower section is in sliding fit sealing connection with the central pressurizing feeding pin.
8. The squeeze casting machine of claim 7, wherein: the lower part of the die cavity is provided with a riser, the die cavity opening is positioned below the riser, and the sealing pin body of the die cavity opening is freely in and out relative to the die cavity opening and is in sealing fit.
9. The squeeze casting machine of claim 1, wherein: the exhaust channel comprises a vertical channel and a transverse channel, the vertical channel is communicated with the atmosphere, and the transverse channel is communicated with the plugging pin channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321012292.1U CN219805366U (en) | 2023-04-28 | 2023-04-28 | Extrusion casting forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321012292.1U CN219805366U (en) | 2023-04-28 | 2023-04-28 | Extrusion casting forming machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219805366U true CN219805366U (en) | 2023-10-10 |
Family
ID=88210116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321012292.1U Active CN219805366U (en) | 2023-04-28 | 2023-04-28 | Extrusion casting forming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219805366U (en) |
-
2023
- 2023-04-28 CN CN202321012292.1U patent/CN219805366U/en active Active
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